+++ /dev/null
-diff --unified --recursive --new-file linux-2.4.30/include/linux/ring.h linux-2.4.30-1-686-smp-ring3/include/linux/ring.h
---- linux-2.4.30/include/linux/ring.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/include/linux/ring.h 2005-10-22 23:08:27.388011250 +0200
-@@ -0,0 +1,108 @@
-+/*
-+ * Definitions for packet ring
-+ *
-+ * 2004 - Luca Deri <deri@ntop.org>
-+ */
-+#ifndef __RING_H
-+#define __RING_H
-+
-+
-+#define INCLUDE_MAC_INFO
-+
-+#ifdef INCLUDE_MAC_INFO
-+#define SKB_DISPLACEMENT 14 /* Include MAC address information */
-+#else
-+#define SKB_DISPLACEMENT 0 /* Do NOT include MAC address information */
-+#endif
-+
-+#define RING_MAGIC
-+#define RING_MAGIC_VALUE 0x88
-+#define RING_FLOWSLOT_VERSION 5
-+#define RING_VERSION "3.0"
-+
-+#define SO_ADD_TO_CLUSTER 99
-+#define SO_REMOVE_FROM_CLUSTER 100
-+#define SO_SET_REFLECTOR 101
-+
-+/* *********************************** */
-+
-+#ifndef HAVE_PCAP
-+struct pcap_pkthdr {
-+ struct timeval ts; /* time stamp */
-+ u_int32_t caplen; /* length of portion present */
-+ u_int32_t len; /* length this packet (off wire) */
-+};
-+#endif
-+
-+/* *********************************** */
-+
-+enum cluster_type {
-+ cluster_per_flow = 0,
-+ cluster_round_robin
-+};
-+
-+/* *********************************** */
-+
-+#define RING_MIN_SLOT_SIZE (60+sizeof(struct pcap_pkthdr))
-+#define RING_MAX_SLOT_SIZE (1514+sizeof(struct pcap_pkthdr))
-+
-+/* *********************************** */
-+
-+typedef struct flowSlotInfo {
-+ u_int16_t version, sample_rate;
-+ u_int32_t tot_slots, slot_len, tot_mem;
-+
-+ u_int64_t tot_pkts, tot_lost;
-+ u_int64_t tot_insert, tot_read;
-+ u_int16_t insert_idx;
-+ u_int16_t remove_idx;
-+} FlowSlotInfo;
-+
-+/* *********************************** */
-+
-+typedef struct flowSlot {
-+#ifdef RING_MAGIC
-+ u_char magic; /* It must alwasy be zero */
-+#endif
-+ u_char slot_state; /* 0=empty, 1=full */
-+ u_char bucket; /* bucket[bucketLen] */
-+} FlowSlot;
-+
-+/* *********************************** */
-+
-+#ifdef __KERNEL__
-+
-+FlowSlotInfo* getRingPtr(void);
-+int allocateRing(char *deviceName, u_int numSlots,
-+ u_int bucketLen, u_int sampleRate);
-+unsigned int pollRing(struct file *fp, struct poll_table_struct * wait);
-+void deallocateRing(void);
-+
-+/* ************************* */
-+
-+typedef int (*handle_ring_skb)(struct sk_buff *skb,
-+ u_char recv_packet, u_char real_skb);
-+extern handle_ring_skb get_skb_ring_handler(void);
-+extern void set_skb_ring_handler(handle_ring_skb the_handler);
-+extern void do_skb_ring_handler(struct sk_buff *skb,
-+ u_char recv_packet, u_char real_skb);
-+
-+typedef int (*handle_ring_buffer)(struct net_device *dev,
-+ char *data, int len);
-+extern handle_ring_buffer get_buffer_ring_handler(void);
-+extern void set_buffer_ring_handler(handle_ring_buffer the_handler);
-+extern int do_buffer_ring_handler(struct net_device *dev,
-+ char *data, int len);
-+#endif /* __KERNEL__ */
-+
-+/* *********************************** */
-+
-+#define PF_RING 27 /* Packet Ring */
-+#define SOCK_RING PF_RING
-+
-+/* ioctl() */
-+#define SIORINGPOLL 0x8888
-+
-+/* *********************************** */
-+
-+#endif /* __RING_H */
-diff --unified --recursive --new-file linux-2.4.30/include/net/sock.h linux-2.4.30-1-686-smp-ring3/include/net/sock.h
---- linux-2.4.30/include/net/sock.h 2004-11-17 12:54:22.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/include/net/sock.h 2005-10-22 23:08:27.976048000 +0200
-@@ -699,6 +699,9 @@
- #if defined (CONFIG_PACKET) || defined(CONFIG_PACKET_MODULE)
- struct packet_opt *af_packet;
- #endif
-+#if defined(CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ struct ring_opt *pf_ring;
-+#endif
- #if defined(CONFIG_X25) || defined(CONFIG_X25_MODULE)
- x25_cb *x25;
- #endif
-diff --unified --recursive --new-file linux-2.4.30/include/net/sock.h.ORG linux-2.4.30-1-686-smp-ring3/include/net/sock.h.ORG
---- linux-2.4.30/include/net/sock.h.ORG 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/include/net/sock.h.ORG 2005-10-22 23:08:27.940045750 +0200
-@@ -0,0 +1,1400 @@
-+/*
-+ * INET An implementation of the TCP/IP protocol suite for the LINUX
-+ * operating system. INET is implemented using the BSD Socket
-+ * interface as the means of communication with the user level.
-+ *
-+ * Definitions for the AF_INET socket handler.
-+ *
-+ * Version: @(#)sock.h 1.0.4 05/13/93
-+ *
-+ * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
-+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
-+ * Corey Minyard <wf-rch!minyard@relay.EU.net>
-+ * Florian La Roche <flla@stud.uni-sb.de>
-+ *
-+ * Fixes:
-+ * Alan Cox : Volatiles in skbuff pointers. See
-+ * skbuff comments. May be overdone,
-+ * better to prove they can be removed
-+ * than the reverse.
-+ * Alan Cox : Added a zapped field for tcp to note
-+ * a socket is reset and must stay shut up
-+ * Alan Cox : New fields for options
-+ * Pauline Middelink : identd support
-+ * Alan Cox : Eliminate low level recv/recvfrom
-+ * David S. Miller : New socket lookup architecture.
-+ * Steve Whitehouse: Default routines for sock_ops
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version
-+ * 2 of the License, or (at your option) any later version.
-+ */
-+#ifndef _SOCK_H
-+#define _SOCK_H
-+
-+#include <linux/config.h>
-+#include <linux/timer.h>
-+#include <linux/cache.h>
-+#include <linux/in.h> /* struct sockaddr_in */
-+
-+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
-+#include <linux/in6.h> /* struct sockaddr_in6 */
-+#include <linux/ipv6.h> /* dest_cache, inet6_options */
-+#include <linux/icmpv6.h>
-+#include <net/if_inet6.h> /* struct ipv6_mc_socklist */
-+#endif
-+
-+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE)
-+#include <linux/icmp.h>
-+#endif
-+#include <linux/tcp.h> /* struct tcphdr */
-+#if defined(CONFIG_IP_SCTP) || defined (CONFIG_IP_SCTP_MODULE)
-+#include <net/sctp/structs.h> /* struct sctp_opt */
-+#endif
-+
-+#include <linux/netdevice.h>
-+#include <linux/skbuff.h> /* struct sk_buff */
-+#include <net/protocol.h> /* struct inet_protocol */
-+#if defined(CONFIG_X25) || defined(CONFIG_X25_MODULE)
-+#include <net/x25.h>
-+#endif
-+#if defined(CONFIG_WAN_ROUTER) || defined(CONFIG_WAN_ROUTER_MODULE)
-+#include <linux/if_wanpipe.h>
-+#endif
-+
-+#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-+#include <net/ax25.h>
-+#if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE)
-+#include <net/netrom.h>
-+#endif
-+#if defined(CONFIG_ROSE) || defined(CONFIG_ROSE_MODULE)
-+#include <net/rose.h>
-+#endif
-+#endif
-+
-+#if defined(CONFIG_PPPOE) || defined(CONFIG_PPPOE_MODULE)
-+#include <linux/if_pppox.h>
-+#include <linux/ppp_channel.h> /* struct ppp_channel */
-+#endif
-+
-+#if defined(CONFIG_IPX) || defined(CONFIG_IPX_MODULE)
-+#if defined(CONFIG_SPX) || defined(CONFIG_SPX_MODULE)
-+#include <net/spx.h>
-+#else
-+#include <net/ipx.h>
-+#endif /* CONFIG_SPX */
-+#endif /* CONFIG_IPX */
-+
-+#if defined(CONFIG_ATALK) || defined(CONFIG_ATALK_MODULE)
-+#include <linux/atalk.h>
-+#endif
-+
-+#if defined(CONFIG_DECNET) || defined(CONFIG_DECNET_MODULE)
-+#include <net/dn.h>
-+#endif
-+
-+#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
-+#include <net/irda/irda.h>
-+#endif
-+
-+#if defined(CONFIG_ATM) || defined(CONFIG_ATM_MODULE)
-+struct atm_vcc;
-+#endif
-+
-+#ifdef CONFIG_FILTER
-+#include <linux/filter.h>
-+#endif
-+
-+#include <asm/atomic.h>
-+#include <net/dst.h>
-+
-+
-+/* The AF_UNIX specific socket options */
-+struct unix_opt {
-+ struct unix_address *addr;
-+ struct dentry * dentry;
-+ struct vfsmount * mnt;
-+ struct semaphore readsem;
-+ struct sock * other;
-+ struct sock ** list;
-+ struct sock * gc_tree;
-+ atomic_t inflight;
-+ rwlock_t lock;
-+ wait_queue_head_t peer_wait;
-+};
-+
-+
-+/* Once the IPX ncpd patches are in these are going into protinfo. */
-+#if defined(CONFIG_IPX) || defined(CONFIG_IPX_MODULE)
-+struct ipx_opt {
-+ ipx_address dest_addr;
-+ ipx_interface *intrfc;
-+ unsigned short port;
-+#ifdef CONFIG_IPX_INTERN
-+ unsigned char node[IPX_NODE_LEN];
-+#endif
-+ unsigned short type;
-+/*
-+ * To handle special ncp connection-handling sockets for mars_nwe,
-+ * the connection number must be stored in the socket.
-+ */
-+ unsigned short ipx_ncp_conn;
-+};
-+#endif
-+
-+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
-+struct ipv6_pinfo {
-+ struct in6_addr saddr;
-+ struct in6_addr rcv_saddr;
-+ struct in6_addr daddr;
-+ struct in6_addr *daddr_cache;
-+
-+ __u32 flow_label;
-+ __u32 frag_size;
-+ int hop_limit;
-+ int mcast_hops;
-+ int mcast_oif;
-+
-+ /* pktoption flags */
-+ union {
-+ struct {
-+ __u8 srcrt:2,
-+ rxinfo:1,
-+ rxhlim:1,
-+ hopopts:1,
-+ dstopts:1,
-+ authhdr:1,
-+ rxflow:1;
-+ } bits;
-+ __u8 all;
-+ } rxopt;
-+
-+ /* sockopt flags */
-+ __u8 mc_loop:1,
-+ recverr:1,
-+ sndflow:1,
-+ pmtudisc:2,
-+ ipv6only:1;
-+
-+ struct ipv6_mc_socklist *ipv6_mc_list;
-+ struct ipv6_ac_socklist *ipv6_ac_list;
-+ struct ipv6_fl_socklist *ipv6_fl_list;
-+ __u32 dst_cookie;
-+
-+ struct ipv6_txoptions *opt;
-+ struct sk_buff *pktoptions;
-+};
-+
-+struct raw6_opt {
-+ __u32 checksum; /* perform checksum */
-+ __u32 offset; /* checksum offset */
-+
-+ struct icmp6_filter filter;
-+};
-+
-+#define __ipv6_only_sock(sk) ((sk)->net_pinfo.af_inet6.ipv6only)
-+#define ipv6_only_sock(sk) ((sk)->family == PF_INET6 && \
-+ (sk)->net_pinfo.af_inet6.ipv6only)
-+#else
-+#define __ipv6_only_sock(sk) 0
-+#define ipv6_only_sock(sk) 0
-+#endif /* IPV6 */
-+
-+#if defined(CONFIG_INET) || defined(CONFIG_INET_MODULE)
-+struct raw_opt {
-+ struct icmp_filter filter;
-+};
-+#endif
-+
-+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE)
-+struct inet_opt
-+{
-+ int ttl; /* TTL setting */
-+ int tos; /* TOS */
-+ unsigned cmsg_flags;
-+ struct ip_options *opt;
-+ unsigned char hdrincl; /* Include headers ? */
-+ __u8 mc_ttl; /* Multicasting TTL */
-+ __u8 mc_loop; /* Loopback */
-+ unsigned recverr : 1,
-+ freebind : 1;
-+ __u16 id; /* ID counter for DF pkts */
-+ __u8 pmtudisc;
-+ int mc_index; /* Multicast device index */
-+ __u32 mc_addr;
-+ struct ip_mc_socklist *mc_list; /* Group array */
-+};
-+#endif
-+
-+#if defined(CONFIG_PPPOE) || defined (CONFIG_PPPOE_MODULE)
-+struct pppoe_opt
-+{
-+ struct net_device *dev; /* device associated with socket*/
-+ struct pppoe_addr pa; /* what this socket is bound to*/
-+ struct sockaddr_pppox relay; /* what socket data will be
-+ relayed to (PPPoE relaying) */
-+};
-+
-+struct pppox_opt
-+{
-+ struct ppp_channel chan;
-+ struct sock *sk;
-+ struct pppox_opt *next; /* for hash table */
-+ union {
-+ struct pppoe_opt pppoe;
-+ } proto;
-+};
-+#define pppoe_dev proto.pppoe.dev
-+#define pppoe_pa proto.pppoe.pa
-+#define pppoe_relay proto.pppoe.relay
-+#endif
-+
-+/* This defines a selective acknowledgement block. */
-+struct tcp_sack_block {
-+ __u32 start_seq;
-+ __u32 end_seq;
-+};
-+
-+enum tcp_congestion_algo {
-+ TCP_RENO=0,
-+ TCP_VEGAS,
-+ TCP_WESTWOOD,
-+ TCP_BIC,
-+};
-+
-+struct tcp_opt {
-+ int tcp_header_len; /* Bytes of tcp header to send */
-+
-+/*
-+ * Header prediction flags
-+ * 0x5?10 << 16 + snd_wnd in net byte order
-+ */
-+ __u32 pred_flags;
-+
-+/*
-+ * RFC793 variables by their proper names. This means you can
-+ * read the code and the spec side by side (and laugh ...)
-+ * See RFC793 and RFC1122. The RFC writes these in capitals.
-+ */
-+ __u32 rcv_nxt; /* What we want to receive next */
-+ __u32 snd_nxt; /* Next sequence we send */
-+
-+ __u32 snd_una; /* First byte we want an ack for */
-+ __u32 snd_sml; /* Last byte of the most recently transmitted small packet */
-+ __u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */
-+ __u32 lsndtime; /* timestamp of last sent data packet (for restart window) */
-+
-+ /* Delayed ACK control data */
-+ struct {
-+ __u8 pending; /* ACK is pending */
-+ __u8 quick; /* Scheduled number of quick acks */
-+ __u8 pingpong; /* The session is interactive */
-+ __u8 blocked; /* Delayed ACK was blocked by socket lock*/
-+ __u32 ato; /* Predicted tick of soft clock */
-+ unsigned long timeout; /* Currently scheduled timeout */
-+ __u32 lrcvtime; /* timestamp of last received data packet*/
-+ __u16 last_seg_size; /* Size of last incoming segment */
-+ __u16 rcv_mss; /* MSS used for delayed ACK decisions */
-+ } ack;
-+
-+ /* Data for direct copy to user */
-+ struct {
-+ struct sk_buff_head prequeue;
-+ struct task_struct *task;
-+ struct iovec *iov;
-+ int memory;
-+ int len;
-+ } ucopy;
-+
-+ __u32 snd_wl1; /* Sequence for window update */
-+ __u32 snd_wnd; /* The window we expect to receive */
-+ __u32 max_window; /* Maximal window ever seen from peer */
-+ __u32 pmtu_cookie; /* Last pmtu seen by socket */
-+ __u16 mss_cache; /* Cached effective mss, not including SACKS */
-+ __u16 mss_clamp; /* Maximal mss, negotiated at connection setup */
-+ __u16 ext_header_len; /* Network protocol overhead (IP/IPv6 options) */
-+ __u8 ca_state; /* State of fast-retransmit machine */
-+ __u8 retransmits; /* Number of unrecovered RTO timeouts. */
-+
-+ __u8 reordering; /* Packet reordering metric. */
-+ __u8 queue_shrunk; /* Write queue has been shrunk recently.*/
-+ __u8 defer_accept; /* User waits for some data after accept() */
-+
-+/* RTT measurement */
-+ __u8 backoff; /* backoff */
-+ __u32 srtt; /* smothed round trip time << 3 */
-+ __u32 mdev; /* medium deviation */
-+ __u32 mdev_max; /* maximal mdev for the last rtt period */
-+ __u32 rttvar; /* smoothed mdev_max */
-+ __u32 rtt_seq; /* sequence number to update rttvar */
-+ __u32 rto; /* retransmit timeout */
-+
-+ __u32 packets_out; /* Packets which are "in flight" */
-+ __u32 left_out; /* Packets which leaved network */
-+ __u32 retrans_out; /* Retransmitted packets out */
-+
-+
-+/*
-+ * Slow start and congestion control (see also Nagle, and Karn & Partridge)
-+ */
-+ __u32 snd_ssthresh; /* Slow start size threshold */
-+ __u32 snd_cwnd; /* Sending congestion window */
-+ __u16 snd_cwnd_cnt; /* Linear increase counter */
-+ __u16 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
-+ __u32 snd_cwnd_used;
-+ __u32 snd_cwnd_stamp;
-+
-+ /* Two commonly used timers in both sender and receiver paths. */
-+ unsigned long timeout;
-+ struct timer_list retransmit_timer; /* Resend (no ack) */
-+ struct timer_list delack_timer; /* Ack delay */
-+
-+ struct sk_buff_head out_of_order_queue; /* Out of order segments go here */
-+
-+ struct tcp_func *af_specific; /* Operations which are AF_INET{4,6} specific */
-+ struct sk_buff *send_head; /* Front of stuff to transmit */
-+ struct page *sndmsg_page; /* Cached page for sendmsg */
-+ u32 sndmsg_off; /* Cached offset for sendmsg */
-+
-+ __u32 rcv_wnd; /* Current receiver window */
-+ __u32 rcv_wup; /* rcv_nxt on last window update sent */
-+ __u32 write_seq; /* Tail(+1) of data held in tcp send buffer */
-+ __u32 pushed_seq; /* Last pushed seq, required to talk to windows */
-+ __u32 copied_seq; /* Head of yet unread data */
-+/*
-+ * Options received (usually on last packet, some only on SYN packets).
-+ */
-+ char tstamp_ok, /* TIMESTAMP seen on SYN packet */
-+ wscale_ok, /* Wscale seen on SYN packet */
-+ sack_ok; /* SACK seen on SYN packet */
-+ char saw_tstamp; /* Saw TIMESTAMP on last packet */
-+ __u8 snd_wscale; /* Window scaling received from sender */
-+ __u8 rcv_wscale; /* Window scaling to send to receiver */
-+ __u8 nonagle; /* Disable Nagle algorithm? */
-+ __u8 keepalive_probes; /* num of allowed keep alive probes */
-+
-+/* PAWS/RTTM data */
-+ __u32 rcv_tsval; /* Time stamp value */
-+ __u32 rcv_tsecr; /* Time stamp echo reply */
-+ __u32 ts_recent; /* Time stamp to echo next */
-+ long ts_recent_stamp;/* Time we stored ts_recent (for aging) */
-+
-+/* SACKs data */
-+ __u16 user_mss; /* mss requested by user in ioctl */
-+ __u8 dsack; /* D-SACK is scheduled */
-+ __u8 eff_sacks; /* Size of SACK array to send with next packet */
-+ struct tcp_sack_block duplicate_sack[1]; /* D-SACK block */
-+ struct tcp_sack_block selective_acks[4]; /* The SACKS themselves*/
-+
-+ __u32 window_clamp; /* Maximal window to advertise */
-+ __u32 rcv_ssthresh; /* Current window clamp */
-+ __u8 probes_out; /* unanswered 0 window probes */
-+ __u8 num_sacks; /* Number of SACK blocks */
-+ __u16 advmss; /* Advertised MSS */
-+
-+ __u8 syn_retries; /* num of allowed syn retries */
-+ __u8 ecn_flags; /* ECN status bits. */
-+ __u16 prior_ssthresh; /* ssthresh saved at recovery start */
-+ __u32 lost_out; /* Lost packets */
-+ __u32 sacked_out; /* SACK'd packets */
-+ __u32 fackets_out; /* FACK'd packets */
-+ __u32 high_seq; /* snd_nxt at onset of congestion */
-+
-+ __u32 retrans_stamp; /* Timestamp of the last retransmit,
-+ * also used in SYN-SENT to remember stamp of
-+ * the first SYN. */
-+ __u32 undo_marker; /* tracking retrans started here. */
-+ int undo_retrans; /* number of undoable retransmissions. */
-+ __u32 urg_seq; /* Seq of received urgent pointer */
-+ __u16 urg_data; /* Saved octet of OOB data and control flags */
-+ __u8 pending; /* Scheduled timer event */
-+ __u8 urg_mode; /* In urgent mode */
-+ __u32 snd_up; /* Urgent pointer */
-+
-+ /* The syn_wait_lock is necessary only to avoid tcp_get_info having
-+ * to grab the main lock sock while browsing the listening hash
-+ * (otherwise it's deadlock prone).
-+ * This lock is acquired in read mode only from tcp_get_info() and
-+ * it's acquired in write mode _only_ from code that is actively
-+ * changing the syn_wait_queue. All readers that are holding
-+ * the master sock lock don't need to grab this lock in read mode
-+ * too as the syn_wait_queue writes are always protected from
-+ * the main sock lock.
-+ */
-+ rwlock_t syn_wait_lock;
-+ struct tcp_listen_opt *listen_opt;
-+
-+ /* FIFO of established children */
-+ struct open_request *accept_queue;
-+ struct open_request *accept_queue_tail;
-+
-+ int write_pending; /* A write to socket waits to start. */
-+
-+ unsigned int keepalive_time; /* time before keep alive takes place */
-+ unsigned int keepalive_intvl; /* time interval between keep alive probes */
-+ int linger2;
-+
-+ __u8 adv_cong; /* Using Vegas, Westwood, or BIC */
-+ __u8 frto_counter; /* Number of new acks after RTO */
-+ __u32 frto_highmark; /* snd_nxt when RTO occurred */
-+
-+ unsigned long last_synq_overflow;
-+
-+/* Receiver side RTT estimation */
-+ struct {
-+ __u32 rtt;
-+ __u32 seq;
-+ __u32 time;
-+ } rcv_rtt_est;
-+
-+/* Receiver queue space */
-+ struct {
-+ int space;
-+ __u32 seq;
-+ __u32 time;
-+ } rcvq_space;
-+
-+/* TCP Westwood structure */
-+ struct {
-+ __u32 bw_ns_est; /* first bandwidth estimation..not too smoothed 8) */
-+ __u32 bw_est; /* bandwidth estimate */
-+ __u32 rtt_win_sx; /* here starts a new evaluation... */
-+ __u32 bk;
-+ __u32 snd_una; /* used for evaluating the number of acked bytes */
-+ __u32 cumul_ack;
-+ __u32 accounted;
-+ __u32 rtt;
-+ __u32 rtt_min; /* minimum observed RTT */
-+ } westwood;
-+
-+/* Vegas variables */
-+ struct {
-+ __u32 beg_snd_nxt; /* right edge during last RTT */
-+ __u32 beg_snd_una; /* left edge during last RTT */
-+ __u32 beg_snd_cwnd; /* saves the size of the cwnd */
-+ __u8 doing_vegas_now;/* if true, do vegas for this RTT */
-+ __u16 cntRTT; /* # of RTTs measured within last RTT */
-+ __u32 minRTT; /* min of RTTs measured within last RTT (in usec) */
-+ __u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */
-+ } vegas;
-+
-+ /* BI TCP Parameters */
-+ struct {
-+ __u32 cnt; /* increase cwnd by 1 after this number of ACKs */
-+ __u32 last_max_cwnd; /* last maximium snd_cwnd */
-+ __u32 last_cwnd; /* the last snd_cwnd */
-+ __u32 last_stamp; /* time when updated last_cwnd */
-+ } bictcp;
-+};
-+
-+
-+/*
-+ * This structure really needs to be cleaned up.
-+ * Most of it is for TCP, and not used by any of
-+ * the other protocols.
-+ */
-+
-+/*
-+ * The idea is to start moving to a newer struct gradualy
-+ *
-+ * IMHO the newer struct should have the following format:
-+ *
-+ * struct sock {
-+ * sockmem [mem, proto, callbacks]
-+ *
-+ * union or struct {
-+ * ax25;
-+ * } ll_pinfo;
-+ *
-+ * union {
-+ * ipv4;
-+ * ipv6;
-+ * ipx;
-+ * netrom;
-+ * rose;
-+ * x25;
-+ * } net_pinfo;
-+ *
-+ * union {
-+ * tcp;
-+ * udp;
-+ * spx;
-+ * netrom;
-+ * } tp_pinfo;
-+ *
-+ * }
-+ *
-+ * The idea failed because IPv6 transition asssumes dual IP/IPv6 sockets.
-+ * So, net_pinfo is IPv6 are really, and protinfo unifies all another
-+ * private areas.
-+ */
-+
-+/* Define this to get the sk->debug debugging facility. */
-+#define SOCK_DEBUGGING
-+#ifdef SOCK_DEBUGGING
-+#define SOCK_DEBUG(sk, msg...) do { if((sk) && ((sk)->debug)) printk(KERN_DEBUG msg); } while (0)
-+#else
-+#define SOCK_DEBUG(sk, msg...) do { } while (0)
-+#endif
-+
-+/* This is the per-socket lock. The spinlock provides a synchronization
-+ * between user contexts and software interrupt processing, whereas the
-+ * mini-semaphore synchronizes multiple users amongst themselves.
-+ */
-+typedef struct {
-+ spinlock_t slock;
-+ unsigned int users;
-+ wait_queue_head_t wq;
-+} socket_lock_t;
-+
-+#define sock_lock_init(__sk) \
-+do { spin_lock_init(&((__sk)->lock.slock)); \
-+ (__sk)->lock.users = 0; \
-+ init_waitqueue_head(&((__sk)->lock.wq)); \
-+} while(0)
-+
-+struct sock {
-+ /* Socket demultiplex comparisons on incoming packets. */
-+ __u32 daddr; /* Foreign IPv4 addr */
-+ __u32 rcv_saddr; /* Bound local IPv4 addr */
-+ __u16 dport; /* Destination port */
-+ unsigned short num; /* Local port */
-+ int bound_dev_if; /* Bound device index if != 0 */
-+
-+ /* Main hash linkage for various protocol lookup tables. */
-+ struct sock *next;
-+ struct sock **pprev;
-+ struct sock *bind_next;
-+ struct sock **bind_pprev;
-+
-+ volatile unsigned char state, /* Connection state */
-+ zapped; /* In ax25 & ipx means not linked */
-+ __u16 sport; /* Source port */
-+
-+ unsigned short family; /* Address family */
-+ unsigned char reuse; /* SO_REUSEADDR setting */
-+ unsigned char shutdown;
-+ atomic_t refcnt; /* Reference count */
-+
-+ socket_lock_t lock; /* Synchronizer... */
-+ int rcvbuf; /* Size of receive buffer in bytes */
-+
-+ wait_queue_head_t *sleep; /* Sock wait queue */
-+ struct dst_entry *dst_cache; /* Destination cache */
-+ rwlock_t dst_lock;
-+ atomic_t rmem_alloc; /* Receive queue bytes committed */
-+ struct sk_buff_head receive_queue; /* Incoming packets */
-+ atomic_t wmem_alloc; /* Transmit queue bytes committed */
-+ struct sk_buff_head write_queue; /* Packet sending queue */
-+ atomic_t omem_alloc; /* "o" is "option" or "other" */
-+ int wmem_queued; /* Persistent queue size */
-+ int forward_alloc; /* Space allocated forward. */
-+ __u32 saddr; /* Sending source */
-+ unsigned int allocation; /* Allocation mode */
-+ int sndbuf; /* Size of send buffer in bytes */
-+ struct sock *prev;
-+
-+ /* Not all are volatile, but some are, so we might as well say they all are.
-+ * XXX Make this a flag word -DaveM
-+ */
-+ volatile char dead,
-+ done,
-+ urginline,
-+ keepopen,
-+ linger,
-+ destroy,
-+ no_check,
-+ broadcast,
-+ bsdism;
-+ unsigned char debug;
-+ unsigned char rcvtstamp;
-+ unsigned char use_write_queue;
-+ unsigned char userlocks;
-+ /* Hole of 3 bytes. Try to pack. */
-+ int route_caps;
-+ int proc;
-+ unsigned long lingertime;
-+
-+ int hashent;
-+ struct sock *pair;
-+
-+ /* The backlog queue is special, it is always used with
-+ * the per-socket spinlock held and requires low latency
-+ * access. Therefore we special case it's implementation.
-+ */
-+ struct {
-+ struct sk_buff *head;
-+ struct sk_buff *tail;
-+ } backlog;
-+
-+ rwlock_t callback_lock;
-+
-+ /* Error queue, rarely used. */
-+ struct sk_buff_head error_queue;
-+
-+ struct proto *prot;
-+
-+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
-+ union {
-+ struct ipv6_pinfo af_inet6;
-+ } net_pinfo;
-+#endif
-+
-+ union {
-+ struct tcp_opt af_tcp;
-+#if defined(CONFIG_IP_SCTP) || defined (CONFIG_IP_SCTP_MODULE)
-+ struct sctp_opt af_sctp;
-+#endif
-+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE)
-+ struct raw_opt tp_raw4;
-+#endif
-+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
-+ struct raw6_opt tp_raw;
-+#endif /* CONFIG_IPV6 */
-+#if defined(CONFIG_SPX) || defined (CONFIG_SPX_MODULE)
-+ struct spx_opt af_spx;
-+#endif /* CONFIG_SPX */
-+
-+ } tp_pinfo;
-+
-+ int err, err_soft; /* Soft holds errors that don't
-+ cause failure but are the cause
-+ of a persistent failure not just
-+ 'timed out' */
-+ unsigned short ack_backlog;
-+ unsigned short max_ack_backlog;
-+ __u32 priority;
-+ unsigned short type;
-+ unsigned char localroute; /* Route locally only */
-+ unsigned char protocol;
-+ struct ucred peercred;
-+ int rcvlowat;
-+ long rcvtimeo;
-+ long sndtimeo;
-+
-+#ifdef CONFIG_FILTER
-+ /* Socket Filtering Instructions */
-+ struct sk_filter *filter;
-+#endif /* CONFIG_FILTER */
-+
-+ /* This is where all the private (optional) areas that don't
-+ * overlap will eventually live.
-+ */
-+ union {
-+ void *destruct_hook;
-+ struct unix_opt af_unix;
-+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE)
-+ struct inet_opt af_inet;
-+#endif
-+#if defined(CONFIG_ATALK) || defined(CONFIG_ATALK_MODULE)
-+ struct atalk_sock af_at;
-+#endif
-+#if defined(CONFIG_IPX) || defined(CONFIG_IPX_MODULE)
-+ struct ipx_opt af_ipx;
-+#endif
-+#if defined (CONFIG_DECNET) || defined(CONFIG_DECNET_MODULE)
-+ struct dn_scp dn;
-+#endif
-+#if defined (CONFIG_PACKET) || defined(CONFIG_PACKET_MODULE)
-+ struct packet_opt *af_packet;
-+#endif
-+#if defined(CONFIG_X25) || defined(CONFIG_X25_MODULE)
-+ x25_cb *x25;
-+#endif
-+#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-+ ax25_cb *ax25;
-+#endif
-+#if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE)
-+ nr_cb *nr;
-+#endif
-+#if defined(CONFIG_ROSE) || defined(CONFIG_ROSE_MODULE)
-+ rose_cb *rose;
-+#endif
-+#if defined(CONFIG_PPPOE) || defined(CONFIG_PPPOE_MODULE)
-+ struct pppox_opt *pppox;
-+#endif
-+ struct netlink_opt *af_netlink;
-+#if defined(CONFIG_ECONET) || defined(CONFIG_ECONET_MODULE)
-+ struct econet_opt *af_econet;
-+#endif
-+#if defined(CONFIG_ATM) || defined(CONFIG_ATM_MODULE)
-+ struct atm_vcc *af_atm;
-+#endif
-+#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
-+ struct irda_sock *irda;
-+#endif
-+#if defined(CONFIG_WAN_ROUTER) || defined(CONFIG_WAN_ROUTER_MODULE)
-+ struct wanpipe_opt *af_wanpipe;
-+#endif
-+ } protinfo;
-+
-+
-+ /* This part is used for the timeout functions. */
-+ struct timer_list timer; /* This is the sock cleanup timer. */
-+ struct timeval stamp;
-+
-+ /* Identd and reporting IO signals */
-+ struct socket *socket;
-+
-+ /* RPC layer private data */
-+ void *user_data;
-+
-+ /* Callbacks */
-+ void (*state_change)(struct sock *sk);
-+ void (*data_ready)(struct sock *sk,int bytes);
-+ void (*write_space)(struct sock *sk);
-+ void (*error_report)(struct sock *sk);
-+
-+ int (*backlog_rcv) (struct sock *sk,
-+ struct sk_buff *skb);
-+ void (*destruct)(struct sock *sk);
-+};
-+
-+/* The per-socket spinlock must be held here. */
-+#define sk_add_backlog(__sk, __skb) \
-+do { if((__sk)->backlog.tail == NULL) { \
-+ (__sk)->backlog.head = \
-+ (__sk)->backlog.tail = (__skb); \
-+ } else { \
-+ ((__sk)->backlog.tail)->next = (__skb); \
-+ (__sk)->backlog.tail = (__skb); \
-+ } \
-+ (__skb)->next = NULL; \
-+} while(0)
-+
-+/* IP protocol blocks we attach to sockets.
-+ * socket layer -> transport layer interface
-+ * transport -> network interface is defined by struct inet_proto
-+ */
-+struct proto {
-+ void (*close)(struct sock *sk,
-+ long timeout);
-+ int (*connect)(struct sock *sk,
-+ struct sockaddr *uaddr,
-+ int addr_len);
-+ int (*disconnect)(struct sock *sk, int flags);
-+
-+ struct sock * (*accept) (struct sock *sk, int flags, int *err);
-+
-+ int (*ioctl)(struct sock *sk, int cmd,
-+ unsigned long arg);
-+ int (*init)(struct sock *sk);
-+ int (*destroy)(struct sock *sk);
-+ void (*shutdown)(struct sock *sk, int how);
-+ int (*setsockopt)(struct sock *sk, int level,
-+ int optname, char *optval, int optlen);
-+ int (*getsockopt)(struct sock *sk, int level,
-+ int optname, char *optval,
-+ int *option);
-+ int (*sendmsg)(struct sock *sk, struct msghdr *msg,
-+ int len);
-+ int (*recvmsg)(struct sock *sk, struct msghdr *msg,
-+ int len, int noblock, int flags,
-+ int *addr_len);
-+ int (*bind)(struct sock *sk,
-+ struct sockaddr *uaddr, int addr_len);
-+
-+ int (*backlog_rcv) (struct sock *sk,
-+ struct sk_buff *skb);
-+
-+ /* Keeping track of sk's, looking them up, and port selection methods. */
-+ void (*hash)(struct sock *sk);
-+ void (*unhash)(struct sock *sk);
-+ int (*get_port)(struct sock *sk, unsigned short snum);
-+
-+ char name[32];
-+
-+ struct {
-+ int inuse;
-+ u8 __pad[SMP_CACHE_BYTES - sizeof(int)];
-+ } stats[NR_CPUS];
-+};
-+
-+/* Called with local bh disabled */
-+static __inline__ void sock_prot_inc_use(struct proto *prot)
-+{
-+ prot->stats[smp_processor_id()].inuse++;
-+}
-+
-+static __inline__ void sock_prot_dec_use(struct proto *prot)
-+{
-+ prot->stats[smp_processor_id()].inuse--;
-+}
-+
-+/* About 10 seconds */
-+#define SOCK_DESTROY_TIME (10*HZ)
-+
-+/* Sockets 0-1023 can't be bound to unless you are superuser */
-+#define PROT_SOCK 1024
-+
-+#define SHUTDOWN_MASK 3
-+#define RCV_SHUTDOWN 1
-+#define SEND_SHUTDOWN 2
-+
-+#define SOCK_SNDBUF_LOCK 1
-+#define SOCK_RCVBUF_LOCK 2
-+#define SOCK_BINDADDR_LOCK 4
-+#define SOCK_BINDPORT_LOCK 8
-+
-+
-+/* Used by processes to "lock" a socket state, so that
-+ * interrupts and bottom half handlers won't change it
-+ * from under us. It essentially blocks any incoming
-+ * packets, so that we won't get any new data or any
-+ * packets that change the state of the socket.
-+ *
-+ * While locked, BH processing will add new packets to
-+ * the backlog queue. This queue is processed by the
-+ * owner of the socket lock right before it is released.
-+ *
-+ * Since ~2.3.5 it is also exclusive sleep lock serializing
-+ * accesses from user process context.
-+ */
-+extern void __lock_sock(struct sock *sk);
-+extern void __release_sock(struct sock *sk);
-+#define lock_sock(__sk) \
-+do { spin_lock_bh(&((__sk)->lock.slock)); \
-+ if ((__sk)->lock.users != 0) \
-+ __lock_sock(__sk); \
-+ (__sk)->lock.users = 1; \
-+ spin_unlock_bh(&((__sk)->lock.slock)); \
-+} while(0)
-+
-+#define release_sock(__sk) \
-+do { spin_lock_bh(&((__sk)->lock.slock)); \
-+ if ((__sk)->backlog.tail != NULL) \
-+ __release_sock(__sk); \
-+ (__sk)->lock.users = 0; \
-+ if (waitqueue_active(&((__sk)->lock.wq))) wake_up(&((__sk)->lock.wq)); \
-+ spin_unlock_bh(&((__sk)->lock.slock)); \
-+} while(0)
-+
-+/* BH context may only use the following locking interface. */
-+#define bh_lock_sock(__sk) spin_lock(&((__sk)->lock.slock))
-+#define bh_unlock_sock(__sk) spin_unlock(&((__sk)->lock.slock))
-+
-+extern struct sock * sk_alloc(int family, int priority, int zero_it);
-+extern void sk_free(struct sock *sk);
-+
-+extern struct sk_buff *sock_wmalloc(struct sock *sk,
-+ unsigned long size, int force,
-+ int priority);
-+extern struct sk_buff *sock_rmalloc(struct sock *sk,
-+ unsigned long size, int force,
-+ int priority);
-+extern void sock_wfree(struct sk_buff *skb);
-+extern void sock_rfree(struct sk_buff *skb);
-+
-+extern int sock_setsockopt(struct socket *sock, int level,
-+ int op, char *optval,
-+ int optlen);
-+
-+extern int sock_getsockopt(struct socket *sock, int level,
-+ int op, char *optval,
-+ int *optlen);
-+extern struct sk_buff *sock_alloc_send_skb(struct sock *sk,
-+ unsigned long size,
-+ int noblock,
-+ int *errcode);
-+extern struct sk_buff *sock_alloc_send_pskb(struct sock *sk,
-+ unsigned long header_len,
-+ unsigned long data_len,
-+ int noblock,
-+ int *errcode);
-+extern void *sock_kmalloc(struct sock *sk, int size, int priority);
-+extern void sock_kfree_s(struct sock *sk, void *mem, int size);
-+
-+/*
-+ * Functions to fill in entries in struct proto_ops when a protocol
-+ * does not implement a particular function.
-+ */
-+extern int sock_no_release(struct socket *);
-+extern int sock_no_bind(struct socket *,
-+ struct sockaddr *, int);
-+extern int sock_no_connect(struct socket *,
-+ struct sockaddr *, int, int);
-+extern int sock_no_socketpair(struct socket *,
-+ struct socket *);
-+extern int sock_no_accept(struct socket *,
-+ struct socket *, int);
-+extern int sock_no_getname(struct socket *,
-+ struct sockaddr *, int *, int);
-+extern unsigned int sock_no_poll(struct file *, struct socket *,
-+ struct poll_table_struct *);
-+extern int sock_no_ioctl(struct socket *, unsigned int,
-+ unsigned long);
-+extern int sock_no_listen(struct socket *, int);
-+extern int sock_no_shutdown(struct socket *, int);
-+extern int sock_no_getsockopt(struct socket *, int , int,
-+ char *, int *);
-+extern int sock_no_setsockopt(struct socket *, int, int,
-+ char *, int);
-+extern int sock_no_fcntl(struct socket *,
-+ unsigned int, unsigned long);
-+extern int sock_no_sendmsg(struct socket *,
-+ struct msghdr *, int,
-+ struct scm_cookie *);
-+extern int sock_no_recvmsg(struct socket *,
-+ struct msghdr *, int, int,
-+ struct scm_cookie *);
-+extern int sock_no_mmap(struct file *file,
-+ struct socket *sock,
-+ struct vm_area_struct *vma);
-+extern ssize_t sock_no_sendpage(struct socket *sock,
-+ struct page *page,
-+ int offset, size_t size,
-+ int flags);
-+
-+/*
-+ * Default socket callbacks and setup code
-+ */
-+
-+extern void sock_def_destruct(struct sock *);
-+
-+/* Initialise core socket variables */
-+extern void sock_init_data(struct socket *sock, struct sock *sk);
-+
-+extern void sklist_remove_socket(struct sock **list, struct sock *sk);
-+extern void sklist_insert_socket(struct sock **list, struct sock *sk);
-+extern void sklist_destroy_socket(struct sock **list, struct sock *sk);
-+
-+#ifdef CONFIG_FILTER
-+
-+/**
-+ * sk_filter - run a packet through a socket filter
-+ * @sk: sock associated with &sk_buff
-+ * @skb: buffer to filter
-+ * @needlock: set to 1 if the sock is not locked by caller.
-+ *
-+ * Run the filter code and then cut skb->data to correct size returned by
-+ * sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller
-+ * than pkt_len we keep whole skb->data. This is the socket level
-+ * wrapper to sk_run_filter. It returns 0 if the packet should
-+ * be accepted or -EPERM if the packet should be tossed.
-+ */
-+
-+static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock)
-+{
-+ int err = 0;
-+
-+ if (sk->filter) {
-+ struct sk_filter *filter;
-+
-+ if (needlock)
-+ bh_lock_sock(sk);
-+
-+ filter = sk->filter;
-+ if (filter) {
-+ int pkt_len = sk_run_filter(skb, filter->insns,
-+ filter->len);
-+ if (!pkt_len)
-+ err = -EPERM;
-+ else
-+ skb_trim(skb, pkt_len);
-+ }
-+
-+ if (needlock)
-+ bh_unlock_sock(sk);
-+ }
-+ return err;
-+}
-+
-+/**
-+ * sk_filter_release: Release a socket filter
-+ * @sk: socket
-+ * @fp: filter to remove
-+ *
-+ * Remove a filter from a socket and release its resources.
-+ */
-+
-+static inline void sk_filter_release(struct sock *sk, struct sk_filter *fp)
-+{
-+ unsigned int size = sk_filter_len(fp);
-+
-+ atomic_sub(size, &sk->omem_alloc);
-+
-+ if (atomic_dec_and_test(&fp->refcnt))
-+ kfree(fp);
-+}
-+
-+static inline void sk_filter_charge(struct sock *sk, struct sk_filter *fp)
-+{
-+ atomic_inc(&fp->refcnt);
-+ atomic_add(sk_filter_len(fp), &sk->omem_alloc);
-+}
-+
-+#else
-+
-+static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock)
-+{
-+ return 0;
-+}
-+
-+#endif /* CONFIG_FILTER */
-+
-+/*
-+ * Socket reference counting postulates.
-+ *
-+ * * Each user of socket SHOULD hold a reference count.
-+ * * Each access point to socket (an hash table bucket, reference from a list,
-+ * running timer, skb in flight MUST hold a reference count.
-+ * * When reference count hits 0, it means it will never increase back.
-+ * * When reference count hits 0, it means that no references from
-+ * outside exist to this socket and current process on current CPU
-+ * is last user and may/should destroy this socket.
-+ * * sk_free is called from any context: process, BH, IRQ. When
-+ * it is called, socket has no references from outside -> sk_free
-+ * may release descendant resources allocated by the socket, but
-+ * to the time when it is called, socket is NOT referenced by any
-+ * hash tables, lists etc.
-+ * * Packets, delivered from outside (from network or from another process)
-+ * and enqueued on receive/error queues SHOULD NOT grab reference count,
-+ * when they sit in queue. Otherwise, packets will leak to hole, when
-+ * socket is looked up by one cpu and unhasing is made by another CPU.
-+ * It is true for udp/raw, netlink (leak to receive and error queues), tcp
-+ * (leak to backlog). Packet socket does all the processing inside
-+ * BR_NETPROTO_LOCK, so that it has not this race condition. UNIX sockets
-+ * use separate SMP lock, so that they are prone too.
-+ */
-+
-+/* Grab socket reference count. This operation is valid only
-+ when sk is ALREADY grabbed f.e. it is found in hash table
-+ or a list and the lookup is made under lock preventing hash table
-+ modifications.
-+ */
-+
-+static inline void sock_hold(struct sock *sk)
-+{
-+ atomic_inc(&sk->refcnt);
-+}
-+
-+/* Ungrab socket in the context, which assumes that socket refcnt
-+ cannot hit zero, f.e. it is true in context of any socketcall.
-+ */
-+static inline void __sock_put(struct sock *sk)
-+{
-+ atomic_dec(&sk->refcnt);
-+}
-+
-+/* Ungrab socket and destroy it, if it was the last reference. */
-+static inline void sock_put(struct sock *sk)
-+{
-+ if (atomic_dec_and_test(&sk->refcnt))
-+ sk_free(sk);
-+}
-+
-+/* Detach socket from process context.
-+ * Announce socket dead, detach it from wait queue and inode.
-+ * Note that parent inode held reference count on this struct sock,
-+ * we do not release it in this function, because protocol
-+ * probably wants some additional cleanups or even continuing
-+ * to work with this socket (TCP).
-+ */
-+static inline void sock_orphan(struct sock *sk)
-+{
-+ write_lock_bh(&sk->callback_lock);
-+ sk->dead = 1;
-+ sk->socket = NULL;
-+ sk->sleep = NULL;
-+ write_unlock_bh(&sk->callback_lock);
-+}
-+
-+static inline void sock_graft(struct sock *sk, struct socket *parent)
-+{
-+ write_lock_bh(&sk->callback_lock);
-+ sk->sleep = &parent->wait;
-+ parent->sk = sk;
-+ sk->socket = parent;
-+ write_unlock_bh(&sk->callback_lock);
-+}
-+
-+static inline int sock_i_uid(struct sock *sk)
-+{
-+ int uid;
-+
-+ read_lock(&sk->callback_lock);
-+ uid = sk->socket ? sk->socket->inode->i_uid : 0;
-+ read_unlock(&sk->callback_lock);
-+ return uid;
-+}
-+
-+static inline unsigned long sock_i_ino(struct sock *sk)
-+{
-+ unsigned long ino;
-+
-+ read_lock(&sk->callback_lock);
-+ ino = sk->socket ? sk->socket->inode->i_ino : 0;
-+ read_unlock(&sk->callback_lock);
-+ return ino;
-+}
-+
-+static inline struct dst_entry *
-+__sk_dst_get(struct sock *sk)
-+{
-+ return sk->dst_cache;
-+}
-+
-+static inline struct dst_entry *
-+sk_dst_get(struct sock *sk)
-+{
-+ struct dst_entry *dst;
-+
-+ read_lock(&sk->dst_lock);
-+ dst = sk->dst_cache;
-+ if (dst)
-+ dst_hold(dst);
-+ read_unlock(&sk->dst_lock);
-+ return dst;
-+}
-+
-+static inline void
-+__sk_dst_set(struct sock *sk, struct dst_entry *dst)
-+{
-+ struct dst_entry *old_dst;
-+
-+ old_dst = sk->dst_cache;
-+ sk->dst_cache = dst;
-+ dst_release(old_dst);
-+}
-+
-+static inline void
-+sk_dst_set(struct sock *sk, struct dst_entry *dst)
-+{
-+ write_lock(&sk->dst_lock);
-+ __sk_dst_set(sk, dst);
-+ write_unlock(&sk->dst_lock);
-+}
-+
-+static inline void
-+__sk_dst_reset(struct sock *sk)
-+{
-+ struct dst_entry *old_dst;
-+
-+ old_dst = sk->dst_cache;
-+ sk->dst_cache = NULL;
-+ dst_release(old_dst);
-+}
-+
-+static inline void
-+sk_dst_reset(struct sock *sk)
-+{
-+ write_lock(&sk->dst_lock);
-+ __sk_dst_reset(sk);
-+ write_unlock(&sk->dst_lock);
-+}
-+
-+static inline struct dst_entry *
-+__sk_dst_check(struct sock *sk, u32 cookie)
-+{
-+ struct dst_entry *dst = sk->dst_cache;
-+
-+ if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
-+ sk->dst_cache = NULL;
-+ return NULL;
-+ }
-+
-+ return dst;
-+}
-+
-+static inline struct dst_entry *
-+sk_dst_check(struct sock *sk, u32 cookie)
-+{
-+ struct dst_entry *dst = sk_dst_get(sk);
-+
-+ if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
-+ sk_dst_reset(sk);
-+ return NULL;
-+ }
-+
-+ return dst;
-+}
-+
-+
-+/*
-+ * Queue a received datagram if it will fit. Stream and sequenced
-+ * protocols can't normally use this as they need to fit buffers in
-+ * and play with them.
-+ *
-+ * Inlined as it's very short and called for pretty much every
-+ * packet ever received.
-+ */
-+
-+static inline void skb_set_owner_w(struct sk_buff *skb, struct sock *sk)
-+{
-+ sock_hold(sk);
-+ skb->sk = sk;
-+ skb->destructor = sock_wfree;
-+ atomic_add(skb->truesize, &sk->wmem_alloc);
-+}
-+
-+static inline void skb_set_owner_r(struct sk_buff *skb, struct sock *sk)
-+{
-+ skb->sk = sk;
-+ skb->destructor = sock_rfree;
-+ atomic_add(skb->truesize, &sk->rmem_alloc);
-+}
-+
-+static inline int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
-+{
-+ int err = 0;
-+ int skb_len;
-+
-+ /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces
-+ number of warnings when compiling with -W --ANK
-+ */
-+ if (atomic_read(&sk->rmem_alloc) + skb->truesize >= (unsigned)sk->rcvbuf) {
-+ err = -ENOMEM;
-+ goto out;
-+ }
-+
-+ /* It would be deadlock, if sock_queue_rcv_skb is used
-+ with socket lock! We assume that users of this
-+ function are lock free.
-+ */
-+ err = sk_filter(sk, skb, 1);
-+ if (err)
-+ goto out;
-+
-+ skb->dev = NULL;
-+ skb_set_owner_r(skb, sk);
-+
-+ /* Cache the SKB length before we tack it onto the receive
-+ * queue. Once it is added it no longer belongs to us and
-+ * may be freed by other threads of control pulling packets
-+ * from the queue.
-+ */
-+ skb_len = skb->len;
-+
-+ skb_queue_tail(&sk->receive_queue, skb);
-+ if (!sk->dead)
-+ sk->data_ready(sk,skb_len);
-+out:
-+ return err;
-+}
-+
-+static inline int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb)
-+{
-+ /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces
-+ number of warnings when compiling with -W --ANK
-+ */
-+ if (atomic_read(&sk->rmem_alloc) + skb->truesize >= (unsigned)sk->rcvbuf)
-+ return -ENOMEM;
-+ skb_set_owner_r(skb, sk);
-+ skb_queue_tail(&sk->error_queue,skb);
-+ if (!sk->dead)
-+ sk->data_ready(sk,skb->len);
-+ return 0;
-+}
-+
-+/*
-+ * Recover an error report and clear atomically
-+ */
-+
-+static inline int sock_error(struct sock *sk)
-+{
-+ int err=xchg(&sk->err,0);
-+ return -err;
-+}
-+
-+static inline unsigned long sock_wspace(struct sock *sk)
-+{
-+ int amt = 0;
-+
-+ if (!(sk->shutdown & SEND_SHUTDOWN)) {
-+ amt = sk->sndbuf - atomic_read(&sk->wmem_alloc);
-+ if (amt < 0)
-+ amt = 0;
-+ }
-+ return amt;
-+}
-+
-+static inline void sk_wake_async(struct sock *sk, int how, int band)
-+{
-+ if (sk->socket && sk->socket->fasync_list)
-+ sock_wake_async(sk->socket, how, band);
-+}
-+
-+#define SOCK_MIN_SNDBUF 2048
-+#define SOCK_MIN_RCVBUF 256
-+
-+/*
-+ * Default write policy as shown to user space via poll/select/SIGIO
-+ */
-+static inline int sock_writeable(struct sock *sk)
-+{
-+ return atomic_read(&sk->wmem_alloc) < (sk->sndbuf / 2);
-+}
-+
-+static inline int gfp_any(void)
-+{
-+ return in_softirq() ? GFP_ATOMIC : GFP_KERNEL;
-+}
-+
-+static inline long sock_rcvtimeo(struct sock *sk, int noblock)
-+{
-+ return noblock ? 0 : sk->rcvtimeo;
-+}
-+
-+static inline long sock_sndtimeo(struct sock *sk, int noblock)
-+{
-+ return noblock ? 0 : sk->sndtimeo;
-+}
-+
-+static inline int sock_rcvlowat(struct sock *sk, int waitall, int len)
-+{
-+ return (waitall ? len : min_t(int, sk->rcvlowat, len)) ? : 1;
-+}
-+
-+/* Alas, with timeout socket operations are not restartable.
-+ * Compare this to poll().
-+ */
-+static inline int sock_intr_errno(long timeo)
-+{
-+ return timeo == MAX_SCHEDULE_TIMEOUT ? -ERESTARTSYS : -EINTR;
-+}
-+
-+static __inline__ void
-+sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
-+{
-+ if (sk->rcvtstamp)
-+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP, sizeof(skb->stamp), &skb->stamp);
-+ else
-+ sk->stamp = skb->stamp;
-+}
-+
-+/*
-+ * Enable debug/info messages
-+ */
-+
-+#if 0
-+#define NETDEBUG(x) do { } while (0)
-+#else
-+#define NETDEBUG(x) do { x; } while (0)
-+#endif
-+
-+/*
-+ * Macros for sleeping on a socket. Use them like this:
-+ *
-+ * SOCK_SLEEP_PRE(sk)
-+ * if (condition)
-+ * schedule();
-+ * SOCK_SLEEP_POST(sk)
-+ *
-+ */
-+
-+#define SOCK_SLEEP_PRE(sk) { struct task_struct *tsk = current; \
-+ DECLARE_WAITQUEUE(wait, tsk); \
-+ tsk->state = TASK_INTERRUPTIBLE; \
-+ add_wait_queue((sk)->sleep, &wait); \
-+ release_sock(sk);
-+
-+#define SOCK_SLEEP_POST(sk) tsk->state = TASK_RUNNING; \
-+ remove_wait_queue((sk)->sleep, &wait); \
-+ lock_sock(sk); \
-+ }
-+
-+extern __u32 sysctl_wmem_max;
-+extern __u32 sysctl_rmem_max;
-+
-+#endif /* _SOCK_H */
-diff --unified --recursive --new-file linux-2.4.30/net/Config.in linux-2.4.30-1-686-smp-ring3/net/Config.in
---- linux-2.4.30/net/Config.in 2005-01-19 15:10:13.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/net/Config.in 2005-10-22 23:08:28.028051250 +0200
-@@ -15,6 +15,9 @@
- bool ' Network packet filtering debugging' CONFIG_NETFILTER_DEBUG
- fi
- bool 'Socket Filtering' CONFIG_FILTER
-+if [ "$CONFIG_EXPERIMENTAL" = "y" -a "$CONFIG_FILTER" = "y" ]; then
-+ source net/ring/Config.in
-+fi
- tristate 'Unix domain sockets' CONFIG_UNIX
- bool 'TCP/IP networking' CONFIG_INET
- if [ "$CONFIG_INET" = "y" ]; then
-diff --unified --recursive --new-file linux-2.4.30/net/Config.in.ORG linux-2.4.30-1-686-smp-ring3/net/Config.in.ORG
---- linux-2.4.30/net/Config.in.ORG 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/net/Config.in.ORG 2005-10-22 23:08:28.020050750 +0200
-@@ -0,0 +1,107 @@
-+#
-+# Network configuration
-+#
-+mainmenu_option next_comment
-+comment 'Networking options'
-+tristate 'Packet socket' CONFIG_PACKET
-+if [ "$CONFIG_PACKET" != "n" ]; then
-+ bool ' Packet socket: mmapped IO' CONFIG_PACKET_MMAP
-+fi
-+
-+tristate 'Netlink device emulation' CONFIG_NETLINK_DEV
-+
-+bool 'Network packet filtering (replaces ipchains)' CONFIG_NETFILTER
-+if [ "$CONFIG_NETFILTER" = "y" ]; then
-+ bool ' Network packet filtering debugging' CONFIG_NETFILTER_DEBUG
-+fi
-+bool 'Socket Filtering' CONFIG_FILTER
-+tristate 'Unix domain sockets' CONFIG_UNIX
-+bool 'TCP/IP networking' CONFIG_INET
-+if [ "$CONFIG_INET" = "y" ]; then
-+ source net/ipv4/Config.in
-+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-+# IPv6 as module will cause a CRASH if you try to unload it
-+ tristate ' The IPv6 protocol (EXPERIMENTAL)' CONFIG_IPV6
-+ if [ "$CONFIG_IPV6" != "n" ]; then
-+ source net/ipv6/Config.in
-+ fi
-+ fi
-+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-+ source net/khttpd/Config.in
-+ fi
-+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-+ source net/sctp/Config.in
-+ fi
-+fi
-+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-+ tristate 'Asynchronous Transfer Mode (ATM) (EXPERIMENTAL)' CONFIG_ATM
-+ if [ "$CONFIG_ATM" = "y" -o "$CONFIG_ATM" = "m" ]; then
-+ if [ "$CONFIG_INET" = "y" ]; then
-+ dep_tristate ' Classical IP over ATM' CONFIG_ATM_CLIP $CONFIG_ATM
-+ if [ "$CONFIG_ATM_CLIP" != "n" ]; then
-+ bool ' Do NOT send ICMP if no neighbour' CONFIG_ATM_CLIP_NO_ICMP
-+ fi
-+ fi
-+ dep_tristate ' LAN Emulation (LANE) support' CONFIG_ATM_LANE $CONFIG_ATM
-+ if [ "$CONFIG_INET" = "y" -a "$CONFIG_ATM_LANE" != "n" ]; then
-+ tristate ' Multi-Protocol Over ATM (MPOA) support' CONFIG_ATM_MPOA
-+ fi
-+ dep_tristate ' RFC1483/2684 Bridged protocols' CONFIG_ATM_BR2684 $CONFIG_ATM
-+ if [ "$CONFIG_ATM_BR2684" != "n" ]; then
-+ bool ' Per-VC IP filter kludge' CONFIG_ATM_BR2684_IPFILTER
-+ fi
-+ fi
-+fi
-+tristate '802.1Q VLAN Support' CONFIG_VLAN_8021Q
-+
-+comment ' '
-+tristate 'The IPX protocol' CONFIG_IPX
-+if [ "$CONFIG_IPX" != "n" ]; then
-+ source net/ipx/Config.in
-+fi
-+
-+tristate 'Appletalk protocol support' CONFIG_ATALK
-+if [ "$CONFIG_ATALK" != "n" ]; then
-+ source drivers/net/appletalk/Config.in
-+fi
-+
-+tristate 'DECnet Support' CONFIG_DECNET
-+if [ "$CONFIG_DECNET" != "n" ]; then
-+ source net/decnet/Config.in
-+fi
-+dep_tristate '802.1d Ethernet Bridging' CONFIG_BRIDGE $CONFIG_INET
-+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-+ tristate 'CCITT X.25 Packet Layer (EXPERIMENTAL)' CONFIG_X25
-+ tristate 'LAPB Data Link Driver (EXPERIMENTAL)' CONFIG_LAPB
-+ bool '802.2 LLC (EXPERIMENTAL)' CONFIG_LLC
-+ bool 'Frame Diverter (EXPERIMENTAL)' CONFIG_NET_DIVERT
-+# if [ "$CONFIG_LLC" = "y" ]; then
-+# bool ' Netbeui (EXPERIMENTAL)' CONFIG_NETBEUI
-+# fi
-+ if [ "$CONFIG_INET" = "y" ]; then
-+ tristate 'Acorn Econet/AUN protocols (EXPERIMENTAL)' CONFIG_ECONET
-+ if [ "$CONFIG_ECONET" != "n" ]; then
-+ bool ' AUN over UDP' CONFIG_ECONET_AUNUDP
-+ bool ' Native Econet' CONFIG_ECONET_NATIVE
-+ fi
-+ fi
-+ tristate 'WAN router' CONFIG_WAN_ROUTER
-+ bool 'Fast switching (read help!)' CONFIG_NET_FASTROUTE
-+ bool 'Forwarding between high speed interfaces' CONFIG_NET_HW_FLOWCONTROL
-+fi
-+
-+mainmenu_option next_comment
-+comment 'QoS and/or fair queueing'
-+bool 'QoS and/or fair queueing' CONFIG_NET_SCHED
-+if [ "$CONFIG_NET_SCHED" = "y" ]; then
-+ source net/sched/Config.in
-+fi
-+#bool 'Network code profiler' CONFIG_NET_PROFILE
-+endmenu
-+
-+mainmenu_option next_comment
-+comment 'Network testing'
-+dep_tristate 'Packet Generator (USE WITH CAUTION)' CONFIG_NET_PKTGEN $CONFIG_PROC_FS
-+endmenu
-+
-+endmenu
-diff --unified --recursive --new-file linux-2.4.30/net/Makefile linux-2.4.30-1-686-smp-ring3/net/Makefile
---- linux-2.4.30/net/Makefile 2004-08-08 01:26:06.000000000 +0200
-+++ linux-2.4.30-1-686-smp-ring3/net/Makefile 2005-10-22 23:08:27.928045000 +0200
-@@ -7,7 +7,7 @@
-
- O_TARGET := network.o
-
--mod-subdirs := ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802
-+mod-subdirs := ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802 ring
- export-objs := netsyms.o
-
- subdir-y := core ethernet
-@@ -46,6 +46,7 @@
- subdir-$(CONFIG_DECNET) += decnet
- subdir-$(CONFIG_ECONET) += econet
- subdir-$(CONFIG_VLAN_8021Q) += 8021q
-+subdir-$(CONFIG_RING) += ring
-
- ifeq ($(CONFIG_NETFILTER),y)
- mod-subdirs += ipv4/ipvs
-diff --unified --recursive --new-file linux-2.4.30/net/Makefile.ORG linux-2.4.30-1-686-smp-ring3/net/Makefile.ORG
---- linux-2.4.30/net/Makefile.ORG 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/net/Makefile.ORG 2005-10-22 23:08:27.916044250 +0200
-@@ -0,0 +1,61 @@
-+#
-+# Makefile for the linux networking.
-+#
-+# 2 Sep 2000, Christoph Hellwig <hch@infradead.org>
-+# Rewritten to use lists instead of if-statements.
-+#
-+
-+O_TARGET := network.o
-+
-+mod-subdirs := ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802
-+export-objs := netsyms.o
-+
-+subdir-y := core ethernet
-+subdir-m := ipv4 # hum?
-+
-+
-+subdir-$(CONFIG_NET) += 802 sched netlink
-+subdir-$(CONFIG_IPV6) += ipv6
-+subdir-$(CONFIG_INET) += ipv4
-+subdir-$(CONFIG_NETFILTER) += ipv4/netfilter
-+subdir-$(CONFIG_UNIX) += unix
-+subdir-$(CONFIG_IP_SCTP) += sctp
-+
-+ifneq ($(CONFIG_IPV6),n)
-+ifneq ($(CONFIG_IPV6),)
-+subdir-$(CONFIG_NETFILTER) += ipv6/netfilter
-+endif
-+endif
-+
-+subdir-$(CONFIG_KHTTPD) += khttpd
-+subdir-$(CONFIG_PACKET) += packet
-+subdir-$(CONFIG_NET_SCHED) += sched
-+subdir-$(CONFIG_BRIDGE) += bridge
-+subdir-$(CONFIG_IPX) += ipx
-+subdir-$(CONFIG_ATALK) += appletalk
-+subdir-$(CONFIG_WAN_ROUTER) += wanrouter
-+subdir-$(CONFIG_X25) += x25
-+subdir-$(CONFIG_LAPB) += lapb
-+subdir-$(CONFIG_NETROM) += netrom
-+subdir-$(CONFIG_ROSE) += rose
-+subdir-$(CONFIG_AX25) += ax25
-+subdir-$(CONFIG_IRDA) += irda
-+subdir-$(CONFIG_BLUEZ) += bluetooth
-+subdir-$(CONFIG_SUNRPC) += sunrpc
-+subdir-$(CONFIG_ATM) += atm
-+subdir-$(CONFIG_DECNET) += decnet
-+subdir-$(CONFIG_ECONET) += econet
-+subdir-$(CONFIG_VLAN_8021Q) += 8021q
-+
-+ifeq ($(CONFIG_NETFILTER),y)
-+ mod-subdirs += ipv4/ipvs
-+ subdir-$(CONFIG_IP_VS) += ipv4/ipvs
-+endif
-+
-+obj-y := socket.o $(join $(subdir-y), $(patsubst %,/%.o,$(notdir $(subdir-y))))
-+ifeq ($(CONFIG_NET),y)
-+obj-$(CONFIG_MODULES) += netsyms.o
-+obj-$(CONFIG_SYSCTL) += sysctl_net.o
-+endif
-+
-+include $(TOPDIR)/Rules.make
-diff --unified --recursive --new-file linux-2.4.30/net/core/dev.c linux-2.4.30-1-686-smp-ring3/net/core/dev.c
---- linux-2.4.30/net/core/dev.c 2005-04-04 03:42:20.000000000 +0200
-+++ linux-2.4.30-1-686-smp-ring3/net/core/dev.c 2005-10-22 23:08:27.900043250 +0200
-@@ -104,6 +104,56 @@
- #include <linux/wireless.h> /* Note : will define WIRELESS_EXT */
- #include <net/iw_handler.h>
- #endif /* CONFIG_NET_RADIO || CONFIG_NET_PCMCIA_RADIO */
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+
-+/* #define RING_DEBUG */
-+
-+#include <linux/ring.h>
-+#include <linux/version.h>
-+
-+static handle_ring_skb ring_handler = NULL;
-+
-+handle_ring_skb get_skb_ring_handler() { return(ring_handler); }
-+
-+void set_skb_ring_handler(handle_ring_skb the_handler) {
-+ ring_handler = the_handler;
-+}
-+
-+void do_skb_ring_handler(struct sk_buff *skb,
-+ u_char recv_packet, u_char real_skb) {
-+ if(ring_handler)
-+ ring_handler(skb, recv_packet, real_skb);
-+}
-+
-+/* ******************* */
-+
-+static handle_ring_buffer buffer_ring_handler = NULL;
-+
-+handle_ring_buffer get_buffer_ring_handler() { return(buffer_ring_handler); }
-+
-+void set_buffer_ring_handler(handle_ring_buffer the_handler) {
-+ buffer_ring_handler = the_handler;
-+}
-+
-+int do_buffer_ring_handler(struct net_device *dev, char *data, int len) {
-+ if(buffer_ring_handler) {
-+ buffer_ring_handler(dev, data, len);
-+ return(1);
-+ } else
-+ return(0);
-+}
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+EXPORT_SYMBOL(get_skb_ring_handler);
-+EXPORT_SYMBOL(set_skb_ring_handler);
-+EXPORT_SYMBOL(do_skb_ring_handler);
-+
-+EXPORT_SYMBOL(get_buffer_ring_handler);
-+EXPORT_SYMBOL(set_buffer_ring_handler);
-+EXPORT_SYMBOL(do_buffer_ring_handler);
-+#endif
-+
-+#endif
- #ifdef CONFIG_PLIP
- extern int plip_init(void);
- #endif
-@@ -1066,6 +1116,10 @@
- return -ENOMEM;
- }
-
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler) ring_handler(skb, 0, 1);
-+#endif /* CONFIG_RING */
-+
- /* Grab device queue */
- spin_lock_bh(&dev->queue_lock);
- q = dev->qdisc;
-@@ -1278,6 +1332,13 @@
- struct softnet_data *queue;
- unsigned long flags;
-
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler && ring_handler(skb, 1, 1)) {
-+ /* The packet has been copied into a ring */
-+ return(NET_RX_SUCCESS);
-+ }
-+#endif /* CONFIG_RING */
-+
- if (skb->stamp.tv_sec == 0)
- do_gettimeofday(&skb->stamp);
-
-@@ -1464,6 +1525,13 @@
- int ret = NET_RX_DROP;
- unsigned short type;
-
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler && ring_handler(skb, 1, 1)) {
-+ /* The packet has been copied into a ring */
-+ return(NET_RX_SUCCESS);
-+ }
-+#endif /* CONFIG_RING */
-+
- if (skb->stamp.tv_sec == 0)
- do_gettimeofday(&skb->stamp);
-
-diff --unified --recursive --new-file linux-2.4.30/net/core/dev.c.ORG linux-2.4.30-1-686-smp-ring3/net/core/dev.c.ORG
---- linux-2.4.30/net/core/dev.c.ORG 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/net/core/dev.c.ORG 2005-10-22 23:08:27.472016500 +0200
-@@ -0,0 +1,2926 @@
-+/*
-+ * NET3 Protocol independent device support routines.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version
-+ * 2 of the License, or (at your option) any later version.
-+ *
-+ * Derived from the non IP parts of dev.c 1.0.19
-+ * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
-+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
-+ * Mark Evans, <evansmp@uhura.aston.ac.uk>
-+ *
-+ * Additional Authors:
-+ * Florian la Roche <rzsfl@rz.uni-sb.de>
-+ * Alan Cox <gw4pts@gw4pts.ampr.org>
-+ * David Hinds <dahinds@users.sourceforge.net>
-+ * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
-+ * Adam Sulmicki <adam@cfar.umd.edu>
-+ * Pekka Riikonen <priikone@poesidon.pspt.fi>
-+ *
-+ * Changes:
-+ * D.J. Barrow : Fixed bug where dev->refcnt gets set to 2
-+ * if register_netdev gets called before
-+ * net_dev_init & also removed a few lines
-+ * of code in the process.
-+ * Alan Cox : device private ioctl copies fields back.
-+ * Alan Cox : Transmit queue code does relevant stunts to
-+ * keep the queue safe.
-+ * Alan Cox : Fixed double lock.
-+ * Alan Cox : Fixed promisc NULL pointer trap
-+ * ???????? : Support the full private ioctl range
-+ * Alan Cox : Moved ioctl permission check into drivers
-+ * Tim Kordas : SIOCADDMULTI/SIOCDELMULTI
-+ * Alan Cox : 100 backlog just doesn't cut it when
-+ * you start doing multicast video 8)
-+ * Alan Cox : Rewrote net_bh and list manager.
-+ * Alan Cox : Fix ETH_P_ALL echoback lengths.
-+ * Alan Cox : Took out transmit every packet pass
-+ * Saved a few bytes in the ioctl handler
-+ * Alan Cox : Network driver sets packet type before calling netif_rx. Saves
-+ * a function call a packet.
-+ * Alan Cox : Hashed net_bh()
-+ * Richard Kooijman: Timestamp fixes.
-+ * Alan Cox : Wrong field in SIOCGIFDSTADDR
-+ * Alan Cox : Device lock protection.
-+ * Alan Cox : Fixed nasty side effect of device close changes.
-+ * Rudi Cilibrasi : Pass the right thing to set_mac_address()
-+ * Dave Miller : 32bit quantity for the device lock to make it work out
-+ * on a Sparc.
-+ * Bjorn Ekwall : Added KERNELD hack.
-+ * Alan Cox : Cleaned up the backlog initialise.
-+ * Craig Metz : SIOCGIFCONF fix if space for under
-+ * 1 device.
-+ * Thomas Bogendoerfer : Return ENODEV for dev_open, if there
-+ * is no device open function.
-+ * Andi Kleen : Fix error reporting for SIOCGIFCONF
-+ * Michael Chastain : Fix signed/unsigned for SIOCGIFCONF
-+ * Cyrus Durgin : Cleaned for KMOD
-+ * Adam Sulmicki : Bug Fix : Network Device Unload
-+ * A network device unload needs to purge
-+ * the backlog queue.
-+ * Paul Rusty Russell : SIOCSIFNAME
-+ * Pekka Riikonen : Netdev boot-time settings code
-+ * Andrew Morton : Make unregister_netdevice wait indefinitely on dev->refcnt
-+ * J Hadi Salim : - Backlog queue sampling
-+ * - netif_rx() feedback
-+ */
-+
-+#include <asm/uaccess.h>
-+#include <asm/system.h>
-+#include <asm/bitops.h>
-+#include <linux/config.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <linux/sched.h>
-+#include <linux/string.h>
-+#include <linux/mm.h>
-+#include <linux/socket.h>
-+#include <linux/sockios.h>
-+#include <linux/errno.h>
-+#include <linux/interrupt.h>
-+#include <linux/if_ether.h>
-+#include <linux/netdevice.h>
-+#include <linux/etherdevice.h>
-+#include <linux/notifier.h>
-+#include <linux/skbuff.h>
-+#include <linux/brlock.h>
-+#include <net/sock.h>
-+#include <linux/rtnetlink.h>
-+#include <linux/proc_fs.h>
-+#include <linux/stat.h>
-+#include <linux/if_bridge.h>
-+#include <linux/divert.h>
-+#include <net/dst.h>
-+#include <net/pkt_sched.h>
-+#include <net/profile.h>
-+#include <net/checksum.h>
-+#include <linux/highmem.h>
-+#include <linux/init.h>
-+#include <linux/kmod.h>
-+#include <linux/module.h>
-+#if defined(CONFIG_NET_RADIO) || defined(CONFIG_NET_PCMCIA_RADIO)
-+#include <linux/wireless.h> /* Note : will define WIRELESS_EXT */
-+#include <net/iw_handler.h>
-+#endif /* CONFIG_NET_RADIO || CONFIG_NET_PCMCIA_RADIO */
-+#ifdef CONFIG_PLIP
-+extern int plip_init(void);
-+#endif
-+
-+
-+/* This define, if set, will randomly drop a packet when congestion
-+ * is more than moderate. It helps fairness in the multi-interface
-+ * case when one of them is a hog, but it kills performance for the
-+ * single interface case so it is off now by default.
-+ */
-+#undef RAND_LIE
-+
-+/* Setting this will sample the queue lengths and thus congestion
-+ * via a timer instead of as each packet is received.
-+ */
-+#undef OFFLINE_SAMPLE
-+
-+NET_PROFILE_DEFINE(dev_queue_xmit)
-+NET_PROFILE_DEFINE(softnet_process)
-+
-+const char *if_port_text[] = {
-+ "unknown",
-+ "BNC",
-+ "10baseT",
-+ "AUI",
-+ "100baseT",
-+ "100baseTX",
-+ "100baseFX"
-+};
-+
-+/*
-+ * The list of packet types we will receive (as opposed to discard)
-+ * and the routines to invoke.
-+ *
-+ * Why 16. Because with 16 the only overlap we get on a hash of the
-+ * low nibble of the protocol value is RARP/SNAP/X.25.
-+ *
-+ * NOTE: That is no longer true with the addition of VLAN tags. Not
-+ * sure which should go first, but I bet it won't make much
-+ * difference if we are running VLANs. The good news is that
-+ * this protocol won't be in the list unless compiled in, so
-+ * the average user (w/out VLANs) will not be adversly affected.
-+ * --BLG
-+ *
-+ * 0800 IP
-+ * 8100 802.1Q VLAN
-+ * 0001 802.3
-+ * 0002 AX.25
-+ * 0004 802.2
-+ * 8035 RARP
-+ * 0005 SNAP
-+ * 0805 X.25
-+ * 0806 ARP
-+ * 8137 IPX
-+ * 0009 Localtalk
-+ * 86DD IPv6
-+ */
-+
-+static struct packet_type *ptype_base[16]; /* 16 way hashed list */
-+static struct packet_type *ptype_all = NULL; /* Taps */
-+
-+#ifdef OFFLINE_SAMPLE
-+static void sample_queue(unsigned long dummy);
-+static struct timer_list samp_timer = { function: sample_queue };
-+#endif
-+
-+#ifdef CONFIG_HOTPLUG
-+static int net_run_sbin_hotplug(struct net_device *dev, char *action);
-+#else
-+#define net_run_sbin_hotplug(dev, action) ({ 0; })
-+#endif
-+
-+/*
-+ * Our notifier list
-+ */
-+
-+static struct notifier_block *netdev_chain=NULL;
-+
-+/*
-+ * Device drivers call our routines to queue packets here. We empty the
-+ * queue in the local softnet handler.
-+ */
-+struct softnet_data softnet_data[NR_CPUS] __cacheline_aligned;
-+
-+#ifdef CONFIG_NET_FASTROUTE
-+int netdev_fastroute;
-+int netdev_fastroute_obstacles;
-+#endif
-+
-+
-+/******************************************************************************************
-+
-+ Protocol management and registration routines
-+
-+*******************************************************************************************/
-+
-+/*
-+ * For efficiency
-+ */
-+
-+int netdev_nit=0;
-+
-+/*
-+ * Add a protocol ID to the list. Now that the input handler is
-+ * smarter we can dispense with all the messy stuff that used to be
-+ * here.
-+ *
-+ * BEWARE!!! Protocol handlers, mangling input packets,
-+ * MUST BE last in hash buckets and checking protocol handlers
-+ * MUST start from promiscous ptype_all chain in net_bh.
-+ * It is true now, do not change it.
-+ * Explantion follows: if protocol handler, mangling packet, will
-+ * be the first on list, it is not able to sense, that packet
-+ * is cloned and should be copied-on-write, so that it will
-+ * change it and subsequent readers will get broken packet.
-+ * --ANK (980803)
-+ */
-+
-+/**
-+ * dev_add_pack - add packet handler
-+ * @pt: packet type declaration
-+ *
-+ * Add a protocol handler to the networking stack. The passed &packet_type
-+ * is linked into kernel lists and may not be freed until it has been
-+ * removed from the kernel lists.
-+ */
-+
-+void dev_add_pack(struct packet_type *pt)
-+{
-+ int hash;
-+
-+ br_write_lock_bh(BR_NETPROTO_LOCK);
-+
-+#ifdef CONFIG_NET_FASTROUTE
-+ /* Hack to detect packet socket */
-+ if ((pt->data) && ((int)(pt->data)!=1)) {
-+ netdev_fastroute_obstacles++;
-+ dev_clear_fastroute(pt->dev);
-+ }
-+#endif
-+ if (pt->type == htons(ETH_P_ALL)) {
-+ netdev_nit++;
-+ pt->next=ptype_all;
-+ ptype_all=pt;
-+ } else {
-+ hash=ntohs(pt->type)&15;
-+ pt->next = ptype_base[hash];
-+ ptype_base[hash] = pt;
-+ }
-+ br_write_unlock_bh(BR_NETPROTO_LOCK);
-+}
-+
-+
-+/**
-+ * dev_remove_pack - remove packet handler
-+ * @pt: packet type declaration
-+ *
-+ * Remove a protocol handler that was previously added to the kernel
-+ * protocol handlers by dev_add_pack(). The passed &packet_type is removed
-+ * from the kernel lists and can be freed or reused once this function
-+ * returns.
-+ */
-+
-+void dev_remove_pack(struct packet_type *pt)
-+{
-+ struct packet_type **pt1;
-+
-+ br_write_lock_bh(BR_NETPROTO_LOCK);
-+
-+ if (pt->type == htons(ETH_P_ALL)) {
-+ netdev_nit--;
-+ pt1=&ptype_all;
-+ } else {
-+ pt1=&ptype_base[ntohs(pt->type)&15];
-+ }
-+
-+ for (; (*pt1) != NULL; pt1 = &((*pt1)->next)) {
-+ if (pt == (*pt1)) {
-+ *pt1 = pt->next;
-+#ifdef CONFIG_NET_FASTROUTE
-+ if (pt->data)
-+ netdev_fastroute_obstacles--;
-+#endif
-+ br_write_unlock_bh(BR_NETPROTO_LOCK);
-+ return;
-+ }
-+ }
-+ br_write_unlock_bh(BR_NETPROTO_LOCK);
-+ printk(KERN_WARNING "dev_remove_pack: %p not found.\n", pt);
-+}
-+
-+/******************************************************************************
-+
-+ Device Boot-time Settings Routines
-+
-+*******************************************************************************/
-+
-+/* Boot time configuration table */
-+static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
-+
-+/**
-+ * netdev_boot_setup_add - add new setup entry
-+ * @name: name of the device
-+ * @map: configured settings for the device
-+ *
-+ * Adds new setup entry to the dev_boot_setup list. The function
-+ * returns 0 on error and 1 on success. This is a generic routine to
-+ * all netdevices.
-+ */
-+int netdev_boot_setup_add(char *name, struct ifmap *map)
-+{
-+ struct netdev_boot_setup *s;
-+ int i;
-+
-+ s = dev_boot_setup;
-+ for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
-+ if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
-+ memset(s[i].name, 0, sizeof(s[i].name));
-+ strcpy(s[i].name, name);
-+ memcpy(&s[i].map, map, sizeof(s[i].map));
-+ break;
-+ }
-+ }
-+
-+ if (i >= NETDEV_BOOT_SETUP_MAX)
-+ return 0;
-+
-+ return 1;
-+}
-+
-+/**
-+ * netdev_boot_setup_check - check boot time settings
-+ * @dev: the netdevice
-+ *
-+ * Check boot time settings for the device.
-+ * The found settings are set for the device to be used
-+ * later in the device probing.
-+ * Returns 0 if no settings found, 1 if they are.
-+ */
-+int netdev_boot_setup_check(struct net_device *dev)
-+{
-+ struct netdev_boot_setup *s;
-+ int i;
-+
-+ s = dev_boot_setup;
-+ for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
-+ if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
-+ !strncmp(dev->name, s[i].name, strlen(s[i].name))) {
-+ dev->irq = s[i].map.irq;
-+ dev->base_addr = s[i].map.base_addr;
-+ dev->mem_start = s[i].map.mem_start;
-+ dev->mem_end = s[i].map.mem_end;
-+ return 1;
-+ }
-+ }
-+ return 0;
-+}
-+
-+/*
-+ * Saves at boot time configured settings for any netdevice.
-+ */
-+int __init netdev_boot_setup(char *str)
-+{
-+ int ints[5];
-+ struct ifmap map;
-+
-+ str = get_options(str, ARRAY_SIZE(ints), ints);
-+ if (!str || !*str)
-+ return 0;
-+
-+ /* Save settings */
-+ memset(&map, 0, sizeof(map));
-+ if (ints[0] > 0)
-+ map.irq = ints[1];
-+ if (ints[0] > 1)
-+ map.base_addr = ints[2];
-+ if (ints[0] > 2)
-+ map.mem_start = ints[3];
-+ if (ints[0] > 3)
-+ map.mem_end = ints[4];
-+
-+ /* Add new entry to the list */
-+ return netdev_boot_setup_add(str, &map);
-+}
-+
-+__setup("netdev=", netdev_boot_setup);
-+
-+/*****************************************************************************************
-+
-+ Device Interface Subroutines
-+
-+******************************************************************************************/
-+
-+/**
-+ * __dev_get_by_name - find a device by its name
-+ * @name: name to find
-+ *
-+ * Find an interface by name. Must be called under RTNL semaphore
-+ * or @dev_base_lock. If the name is found a pointer to the device
-+ * is returned. If the name is not found then %NULL is returned. The
-+ * reference counters are not incremented so the caller must be
-+ * careful with locks.
-+ */
-+
-+
-+struct net_device *__dev_get_by_name(const char *name)
-+{
-+ struct net_device *dev;
-+
-+ for (dev = dev_base; dev != NULL; dev = dev->next) {
-+ if (strncmp(dev->name, name, IFNAMSIZ) == 0)
-+ return dev;
-+ }
-+ return NULL;
-+}
-+
-+/**
-+ * dev_get_by_name - find a device by its name
-+ * @name: name to find
-+ *
-+ * Find an interface by name. This can be called from any
-+ * context and does its own locking. The returned handle has
-+ * the usage count incremented and the caller must use dev_put() to
-+ * release it when it is no longer needed. %NULL is returned if no
-+ * matching device is found.
-+ */
-+
-+struct net_device *dev_get_by_name(const char *name)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_name(name);
-+ if (dev)
-+ dev_hold(dev);
-+ read_unlock(&dev_base_lock);
-+ return dev;
-+}
-+
-+/*
-+ Return value is changed to int to prevent illegal usage in future.
-+ It is still legal to use to check for device existence.
-+
-+ User should understand, that the result returned by this function
-+ is meaningless, if it was not issued under rtnl semaphore.
-+ */
-+
-+/**
-+ * dev_get - test if a device exists
-+ * @name: name to test for
-+ *
-+ * Test if a name exists. Returns true if the name is found. In order
-+ * to be sure the name is not allocated or removed during the test the
-+ * caller must hold the rtnl semaphore.
-+ *
-+ * This function primarily exists for back compatibility with older
-+ * drivers.
-+ */
-+
-+int dev_get(const char *name)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_name(name);
-+ read_unlock(&dev_base_lock);
-+ return dev != NULL;
-+}
-+
-+/**
-+ * __dev_get_by_index - find a device by its ifindex
-+ * @ifindex: index of device
-+ *
-+ * Search for an interface by index. Returns %NULL if the device
-+ * is not found or a pointer to the device. The device has not
-+ * had its reference counter increased so the caller must be careful
-+ * about locking. The caller must hold either the RTNL semaphore
-+ * or @dev_base_lock.
-+ */
-+
-+struct net_device * __dev_get_by_index(int ifindex)
-+{
-+ struct net_device *dev;
-+
-+ for (dev = dev_base; dev != NULL; dev = dev->next) {
-+ if (dev->ifindex == ifindex)
-+ return dev;
-+ }
-+ return NULL;
-+}
-+
-+
-+/**
-+ * dev_get_by_index - find a device by its ifindex
-+ * @ifindex: index of device
-+ *
-+ * Search for an interface by index. Returns NULL if the device
-+ * is not found or a pointer to the device. The device returned has
-+ * had a reference added and the pointer is safe until the user calls
-+ * dev_put to indicate they have finished with it.
-+ */
-+
-+struct net_device * dev_get_by_index(int ifindex)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_index(ifindex);
-+ if (dev)
-+ dev_hold(dev);
-+ read_unlock(&dev_base_lock);
-+ return dev;
-+}
-+
-+/**
-+ * dev_getbyhwaddr - find a device by its hardware address
-+ * @type: media type of device
-+ * @ha: hardware address
-+ *
-+ * Search for an interface by MAC address. Returns NULL if the device
-+ * is not found or a pointer to the device. The caller must hold the
-+ * rtnl semaphore. The returned device has not had its ref count increased
-+ * and the caller must therefore be careful about locking
-+ *
-+ * BUGS:
-+ * If the API was consistent this would be __dev_get_by_hwaddr
-+ */
-+
-+struct net_device *dev_getbyhwaddr(unsigned short type, char *ha)
-+{
-+ struct net_device *dev;
-+
-+ ASSERT_RTNL();
-+
-+ for (dev = dev_base; dev != NULL; dev = dev->next) {
-+ if (dev->type == type &&
-+ memcmp(dev->dev_addr, ha, dev->addr_len) == 0)
-+ return dev;
-+ }
-+ return NULL;
-+}
-+
-+/**
-+ * dev_get_by_flags - find any device with given flags
-+ * @if_flags: IFF_* values
-+ * @mask: bitmask of bits in if_flags to check
-+ *
-+ * Search for any interface with the given flags. Returns NULL if a device
-+ * is not found or a pointer to the device. The device returned has
-+ * had a reference added and the pointer is safe until the user calls
-+ * dev_put to indicate they have finished with it.
-+ */
-+
-+struct net_device * dev_get_by_flags(unsigned short if_flags, unsigned short mask)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_flags(if_flags, mask);
-+ if (dev)
-+ dev_hold(dev);
-+ read_unlock(&dev_base_lock);
-+ return dev;
-+}
-+
-+/**
-+ * __dev_get_by_flags - find any device with given flags
-+ * @if_flags: IFF_* values
-+ * @mask: bitmask of bits in if_flags to check
-+ *
-+ * Search for any interface with the given flags. Returns NULL if a device
-+ * is not found or a pointer to the device. The caller must hold either
-+ * the RTNL semaphore or @dev_base_lock.
-+ */
-+
-+struct net_device *__dev_get_by_flags(unsigned short if_flags, unsigned short mask)
-+{
-+ struct net_device *dev;
-+
-+ for (dev = dev_base; dev != NULL; dev = dev->next) {
-+ if (((dev->flags ^ if_flags) & mask) == 0)
-+ return dev;
-+ }
-+ return NULL;
-+}
-+
-+/**
-+ * dev_alloc_name - allocate a name for a device
-+ * @dev: device
-+ * @name: name format string
-+ *
-+ * Passed a format string - eg "lt%d" it will try and find a suitable
-+ * id. Not efficient for many devices, not called a lot. The caller
-+ * must hold the dev_base or rtnl lock while allocating the name and
-+ * adding the device in order to avoid duplicates. Returns the number
-+ * of the unit assigned or a negative errno code.
-+ */
-+
-+int dev_alloc_name(struct net_device *dev, const char *name)
-+{
-+ int i;
-+ char buf[32];
-+ char *p;
-+
-+ /*
-+ * Verify the string as this thing may have come from
-+ * the user. There must be either one "%d" and no other "%"
-+ * characters, or no "%" characters at all.
-+ */
-+ p = strchr(name, '%');
-+ if (p && (p[1] != 'd' || strchr(p+2, '%')))
-+ return -EINVAL;
-+
-+ /*
-+ * If you need over 100 please also fix the algorithm...
-+ */
-+ for (i = 0; i < 100; i++) {
-+ snprintf(buf,sizeof(buf),name,i);
-+ if (__dev_get_by_name(buf) == NULL) {
-+ strcpy(dev->name, buf);
-+ return i;
-+ }
-+ }
-+ return -ENFILE; /* Over 100 of the things .. bail out! */
-+}
-+
-+/**
-+ * dev_alloc - allocate a network device and name
-+ * @name: name format string
-+ * @err: error return pointer
-+ *
-+ * Passed a format string, eg. "lt%d", it will allocate a network device
-+ * and space for the name. %NULL is returned if no memory is available.
-+ * If the allocation succeeds then the name is assigned and the
-+ * device pointer returned. %NULL is returned if the name allocation
-+ * failed. The cause of an error is returned as a negative errno code
-+ * in the variable @err points to.
-+ *
-+ * The caller must hold the @dev_base or RTNL locks when doing this in
-+ * order to avoid duplicate name allocations.
-+ */
-+
-+struct net_device *dev_alloc(const char *name, int *err)
-+{
-+ struct net_device *dev=kmalloc(sizeof(struct net_device), GFP_KERNEL);
-+ if (dev == NULL) {
-+ *err = -ENOBUFS;
-+ return NULL;
-+ }
-+ memset(dev, 0, sizeof(struct net_device));
-+ *err = dev_alloc_name(dev, name);
-+ if (*err < 0) {
-+ kfree(dev);
-+ return NULL;
-+ }
-+ return dev;
-+}
-+
-+/**
-+ * netdev_state_change - device changes state
-+ * @dev: device to cause notification
-+ *
-+ * Called to indicate a device has changed state. This function calls
-+ * the notifier chains for netdev_chain and sends a NEWLINK message
-+ * to the routing socket.
-+ */
-+
-+void netdev_state_change(struct net_device *dev)
-+{
-+ if (dev->flags&IFF_UP) {
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
-+ rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
-+ }
-+}
-+
-+
-+#ifdef CONFIG_KMOD
-+
-+/**
-+ * dev_load - load a network module
-+ * @name: name of interface
-+ *
-+ * If a network interface is not present and the process has suitable
-+ * privileges this function loads the module. If module loading is not
-+ * available in this kernel then it becomes a nop.
-+ */
-+
-+void dev_load(const char *name)
-+{
-+ if (!dev_get(name) && capable(CAP_SYS_MODULE))
-+ request_module(name);
-+}
-+
-+#else
-+
-+extern inline void dev_load(const char *unused){;}
-+
-+#endif
-+
-+static int default_rebuild_header(struct sk_buff *skb)
-+{
-+ printk(KERN_DEBUG "%s: default_rebuild_header called -- BUG!\n", skb->dev ? skb->dev->name : "NULL!!!");
-+ kfree_skb(skb);
-+ return 1;
-+}
-+
-+/**
-+ * dev_open - prepare an interface for use.
-+ * @dev: device to open
-+ *
-+ * Takes a device from down to up state. The device's private open
-+ * function is invoked and then the multicast lists are loaded. Finally
-+ * the device is moved into the up state and a %NETDEV_UP message is
-+ * sent to the netdev notifier chain.
-+ *
-+ * Calling this function on an active interface is a nop. On a failure
-+ * a negative errno code is returned.
-+ */
-+
-+int dev_open(struct net_device *dev)
-+{
-+ int ret = 0;
-+
-+ /*
-+ * Is it already up?
-+ */
-+
-+ if (dev->flags&IFF_UP)
-+ return 0;
-+
-+ /*
-+ * Is it even present?
-+ */
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+
-+ /*
-+ * Call device private open method
-+ */
-+ if (try_inc_mod_count(dev->owner)) {
-+ set_bit(__LINK_STATE_START, &dev->state);
-+ if (dev->open) {
-+ ret = dev->open(dev);
-+ if (ret != 0) {
-+ clear_bit(__LINK_STATE_START, &dev->state);
-+ if (dev->owner)
-+ __MOD_DEC_USE_COUNT(dev->owner);
-+ }
-+ }
-+ } else {
-+ ret = -ENODEV;
-+ }
-+
-+ /*
-+ * If it went open OK then:
-+ */
-+
-+ if (ret == 0)
-+ {
-+ /*
-+ * Set the flags.
-+ */
-+ dev->flags |= IFF_UP;
-+
-+ /*
-+ * Initialize multicasting status
-+ */
-+ dev_mc_upload(dev);
-+
-+ /*
-+ * Wakeup transmit queue engine
-+ */
-+ dev_activate(dev);
-+
-+ /*
-+ * ... and announce new interface.
-+ */
-+ notifier_call_chain(&netdev_chain, NETDEV_UP, dev);
-+ }
-+ return(ret);
-+}
-+
-+#ifdef CONFIG_NET_FASTROUTE
-+
-+static void dev_do_clear_fastroute(struct net_device *dev)
-+{
-+ if (dev->accept_fastpath) {
-+ int i;
-+
-+ for (i=0; i<=NETDEV_FASTROUTE_HMASK; i++) {
-+ struct dst_entry *dst;
-+
-+ write_lock_irq(&dev->fastpath_lock);
-+ dst = dev->fastpath[i];
-+ dev->fastpath[i] = NULL;
-+ write_unlock_irq(&dev->fastpath_lock);
-+
-+ dst_release(dst);
-+ }
-+ }
-+}
-+
-+void dev_clear_fastroute(struct net_device *dev)
-+{
-+ if (dev) {
-+ dev_do_clear_fastroute(dev);
-+ } else {
-+ read_lock(&dev_base_lock);
-+ for (dev = dev_base; dev; dev = dev->next)
-+ dev_do_clear_fastroute(dev);
-+ read_unlock(&dev_base_lock);
-+ }
-+}
-+#endif
-+
-+/**
-+ * dev_close - shutdown an interface.
-+ * @dev: device to shutdown
-+ *
-+ * This function moves an active device into down state. A
-+ * %NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device
-+ * is then deactivated and finally a %NETDEV_DOWN is sent to the notifier
-+ * chain.
-+ */
-+
-+int dev_close(struct net_device *dev)
-+{
-+ if (!(dev->flags&IFF_UP))
-+ return 0;
-+
-+ /*
-+ * Tell people we are going down, so that they can
-+ * prepare to death, when device is still operating.
-+ */
-+ notifier_call_chain(&netdev_chain, NETDEV_GOING_DOWN, dev);
-+
-+ dev_deactivate(dev);
-+
-+ clear_bit(__LINK_STATE_START, &dev->state);
-+
-+ /* Synchronize to scheduled poll. We cannot touch poll list,
-+ * it can be even on different cpu. So just clear netif_running(),
-+ * and wait when poll really will happen. Actually, the best place
-+ * for this is inside dev->stop() after device stopped its irq
-+ * engine, but this requires more changes in devices. */
-+
-+ smp_mb__after_clear_bit(); /* Commit netif_running(). */
-+ while (test_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
-+ /* No hurry. */
-+ current->state = TASK_INTERRUPTIBLE;
-+ schedule_timeout(1);
-+ }
-+
-+ /*
-+ * Call the device specific close. This cannot fail.
-+ * Only if device is UP
-+ *
-+ * We allow it to be called even after a DETACH hot-plug
-+ * event.
-+ */
-+
-+ if (dev->stop)
-+ dev->stop(dev);
-+
-+ /*
-+ * Device is now down.
-+ */
-+
-+ dev->flags &= ~IFF_UP;
-+#ifdef CONFIG_NET_FASTROUTE
-+ dev_clear_fastroute(dev);
-+#endif
-+
-+ /*
-+ * Tell people we are down
-+ */
-+ notifier_call_chain(&netdev_chain, NETDEV_DOWN, dev);
-+
-+ /*
-+ * Drop the module refcount
-+ */
-+ if (dev->owner)
-+ __MOD_DEC_USE_COUNT(dev->owner);
-+
-+ return(0);
-+}
-+
-+
-+/*
-+ * Device change register/unregister. These are not inline or static
-+ * as we export them to the world.
-+ */
-+
-+/**
-+ * register_netdevice_notifier - register a network notifier block
-+ * @nb: notifier
-+ *
-+ * Register a notifier to be called when network device events occur.
-+ * The notifier passed is linked into the kernel structures and must
-+ * not be reused until it has been unregistered. A negative errno code
-+ * is returned on a failure.
-+ */
-+
-+int register_netdevice_notifier(struct notifier_block *nb)
-+{
-+ return notifier_chain_register(&netdev_chain, nb);
-+}
-+
-+/**
-+ * unregister_netdevice_notifier - unregister a network notifier block
-+ * @nb: notifier
-+ *
-+ * Unregister a notifier previously registered by
-+ * register_netdevice_notifier(). The notifier is unlinked into the
-+ * kernel structures and may then be reused. A negative errno code
-+ * is returned on a failure.
-+ */
-+
-+int unregister_netdevice_notifier(struct notifier_block *nb)
-+{
-+ return notifier_chain_unregister(&netdev_chain,nb);
-+}
-+
-+/*
-+ * Support routine. Sends outgoing frames to any network
-+ * taps currently in use.
-+ */
-+
-+void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
-+{
-+ struct packet_type *ptype;
-+ do_gettimeofday(&skb->stamp);
-+
-+ br_read_lock(BR_NETPROTO_LOCK);
-+ for (ptype = ptype_all; ptype!=NULL; ptype = ptype->next)
-+ {
-+ /* Never send packets back to the socket
-+ * they originated from - MvS (miquels@drinkel.ow.org)
-+ */
-+ if ((ptype->dev == dev || !ptype->dev) &&
-+ ((struct sock *)ptype->data != skb->sk))
-+ {
-+ struct sk_buff *skb2;
-+ if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL)
-+ break;
-+
-+ /* skb->nh should be correctly
-+ set by sender, so that the second statement is
-+ just protection against buggy protocols.
-+ */
-+ skb2->mac.raw = skb2->data;
-+
-+ if (skb2->nh.raw < skb2->data || skb2->nh.raw > skb2->tail) {
-+ if (net_ratelimit())
-+ printk(KERN_CRIT "protocol %04x is buggy, dev %s\n", skb2->protocol, dev->name);
-+ skb2->nh.raw = skb2->data;
-+ }
-+
-+ skb2->h.raw = skb2->nh.raw;
-+ skb2->pkt_type = PACKET_OUTGOING;
-+ ptype->func(skb2, skb->dev, ptype);
-+ }
-+ }
-+ br_read_unlock(BR_NETPROTO_LOCK);
-+}
-+
-+/* Calculate csum in the case, when packet is misrouted.
-+ * If it failed by some reason, ignore and send skb with wrong
-+ * checksum.
-+ */
-+struct sk_buff * skb_checksum_help(struct sk_buff *skb)
-+{
-+ int offset;
-+ unsigned int csum;
-+
-+ offset = skb->h.raw - skb->data;
-+ if (offset > (int)skb->len)
-+ BUG();
-+ csum = skb_checksum(skb, offset, skb->len-offset, 0);
-+
-+ offset = skb->tail - skb->h.raw;
-+ if (offset <= 0)
-+ BUG();
-+ if (skb->csum+2 > offset)
-+ BUG();
-+
-+ *(u16*)(skb->h.raw + skb->csum) = csum_fold(csum);
-+ skb->ip_summed = CHECKSUM_NONE;
-+ return skb;
-+}
-+
-+#ifdef CONFIG_HIGHMEM
-+/* Actually, we should eliminate this check as soon as we know, that:
-+ * 1. IOMMU is present and allows to map all the memory.
-+ * 2. No high memory really exists on this machine.
-+ */
-+
-+static inline int
-+illegal_highdma(struct net_device *dev, struct sk_buff *skb)
-+{
-+ int i;
-+
-+ if (dev->features&NETIF_F_HIGHDMA)
-+ return 0;
-+
-+ for (i=0; i<skb_shinfo(skb)->nr_frags; i++)
-+ if (skb_shinfo(skb)->frags[i].page >= highmem_start_page)
-+ return 1;
-+
-+ return 0;
-+}
-+#else
-+#define illegal_highdma(dev, skb) (0)
-+#endif
-+
-+/**
-+ * dev_queue_xmit - transmit a buffer
-+ * @skb: buffer to transmit
-+ *
-+ * Queue a buffer for transmission to a network device. The caller must
-+ * have set the device and priority and built the buffer before calling this
-+ * function. The function can be called from an interrupt.
-+ *
-+ * A negative errno code is returned on a failure. A success does not
-+ * guarantee the frame will be transmitted as it may be dropped due
-+ * to congestion or traffic shaping.
-+ */
-+
-+int dev_queue_xmit(struct sk_buff *skb)
-+{
-+ struct net_device *dev = skb->dev;
-+ struct Qdisc *q;
-+
-+ if (skb_shinfo(skb)->frag_list &&
-+ !(dev->features&NETIF_F_FRAGLIST) &&
-+ skb_linearize(skb, GFP_ATOMIC) != 0) {
-+ kfree_skb(skb);
-+ return -ENOMEM;
-+ }
-+
-+ /* Fragmented skb is linearized if device does not support SG,
-+ * or if at least one of fragments is in highmem and device
-+ * does not support DMA from it.
-+ */
-+ if (skb_shinfo(skb)->nr_frags &&
-+ (!(dev->features&NETIF_F_SG) || illegal_highdma(dev, skb)) &&
-+ skb_linearize(skb, GFP_ATOMIC) != 0) {
-+ kfree_skb(skb);
-+ return -ENOMEM;
-+ }
-+
-+ /* If packet is not checksummed and device does not support
-+ * checksumming for this protocol, complete checksumming here.
-+ */
-+ if (skb->ip_summed == CHECKSUM_HW &&
-+ (!(dev->features&(NETIF_F_HW_CSUM|NETIF_F_NO_CSUM)) &&
-+ (!(dev->features&NETIF_F_IP_CSUM) ||
-+ skb->protocol != htons(ETH_P_IP)))) {
-+ if ((skb = skb_checksum_help(skb)) == NULL)
-+ return -ENOMEM;
-+ }
-+
-+ /* Grab device queue */
-+ spin_lock_bh(&dev->queue_lock);
-+ q = dev->qdisc;
-+ if (q->enqueue) {
-+ int ret = q->enqueue(skb, q);
-+
-+ qdisc_run(dev);
-+
-+ spin_unlock_bh(&dev->queue_lock);
-+ return ret == NET_XMIT_BYPASS ? NET_XMIT_SUCCESS : ret;
-+ }
-+
-+ /* The device has no queue. Common case for software devices:
-+ loopback, all the sorts of tunnels...
-+
-+ Really, it is unlikely that xmit_lock protection is necessary here.
-+ (f.e. loopback and IP tunnels are clean ignoring statistics counters.)
-+ However, it is possible, that they rely on protection
-+ made by us here.
-+
-+ Check this and shot the lock. It is not prone from deadlocks.
-+ Either shot noqueue qdisc, it is even simpler 8)
-+ */
-+ if (dev->flags&IFF_UP) {
-+ int cpu = smp_processor_id();
-+
-+ if (dev->xmit_lock_owner != cpu) {
-+ spin_unlock(&dev->queue_lock);
-+ spin_lock(&dev->xmit_lock);
-+ dev->xmit_lock_owner = cpu;
-+
-+ if (!netif_queue_stopped(dev)) {
-+ if (netdev_nit)
-+ dev_queue_xmit_nit(skb,dev);
-+
-+ if (dev->hard_start_xmit(skb, dev) == 0) {
-+ dev->xmit_lock_owner = -1;
-+ spin_unlock_bh(&dev->xmit_lock);
-+ return 0;
-+ }
-+ }
-+ dev->xmit_lock_owner = -1;
-+ spin_unlock_bh(&dev->xmit_lock);
-+ if (net_ratelimit())
-+ printk(KERN_CRIT "Virtual device %s asks to queue packet!\n", dev->name);
-+ kfree_skb(skb);
-+ return -ENETDOWN;
-+ } else {
-+ /* Recursion is detected! It is possible, unfortunately */
-+ if (net_ratelimit())
-+ printk(KERN_CRIT "Dead loop on virtual device %s, fix it urgently!\n", dev->name);
-+ }
-+ }
-+ spin_unlock_bh(&dev->queue_lock);
-+
-+ kfree_skb(skb);
-+ return -ENETDOWN;
-+}
-+
-+
-+/*=======================================================================
-+ Receiver routines
-+ =======================================================================*/
-+
-+int netdev_max_backlog = 300;
-+int weight_p = 64; /* old backlog weight */
-+/* These numbers are selected based on intuition and some
-+ * experimentatiom, if you have more scientific way of doing this
-+ * please go ahead and fix things.
-+ */
-+int no_cong_thresh = 10;
-+int no_cong = 20;
-+int lo_cong = 100;
-+int mod_cong = 290;
-+
-+struct netif_rx_stats netdev_rx_stat[NR_CPUS];
-+
-+
-+#ifdef CONFIG_NET_HW_FLOWCONTROL
-+atomic_t netdev_dropping = ATOMIC_INIT(0);
-+static unsigned long netdev_fc_mask = 1;
-+unsigned long netdev_fc_xoff = 0;
-+spinlock_t netdev_fc_lock = SPIN_LOCK_UNLOCKED;
-+
-+static struct
-+{
-+ void (*stimul)(struct net_device *);
-+ struct net_device *dev;
-+} netdev_fc_slots[BITS_PER_LONG];
-+
-+int netdev_register_fc(struct net_device *dev, void (*stimul)(struct net_device *dev))
-+{
-+ int bit = 0;
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&netdev_fc_lock, flags);
-+ if (netdev_fc_mask != ~0UL) {
-+ bit = ffz(netdev_fc_mask);
-+ netdev_fc_slots[bit].stimul = stimul;
-+ netdev_fc_slots[bit].dev = dev;
-+ set_bit(bit, &netdev_fc_mask);
-+ clear_bit(bit, &netdev_fc_xoff);
-+ }
-+ spin_unlock_irqrestore(&netdev_fc_lock, flags);
-+ return bit;
-+}
-+
-+void netdev_unregister_fc(int bit)
-+{
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&netdev_fc_lock, flags);
-+ if (bit > 0) {
-+ netdev_fc_slots[bit].stimul = NULL;
-+ netdev_fc_slots[bit].dev = NULL;
-+ clear_bit(bit, &netdev_fc_mask);
-+ clear_bit(bit, &netdev_fc_xoff);
-+ }
-+ spin_unlock_irqrestore(&netdev_fc_lock, flags);
-+}
-+
-+static void netdev_wakeup(void)
-+{
-+ unsigned long xoff;
-+
-+ spin_lock(&netdev_fc_lock);
-+ xoff = netdev_fc_xoff;
-+ netdev_fc_xoff = 0;
-+ while (xoff) {
-+ int i = ffz(~xoff);
-+ xoff &= ~(1<<i);
-+ netdev_fc_slots[i].stimul(netdev_fc_slots[i].dev);
-+ }
-+ spin_unlock(&netdev_fc_lock);
-+}
-+#endif
-+
-+static void get_sample_stats(int cpu)
-+{
-+#ifdef RAND_LIE
-+ unsigned long rd;
-+ int rq;
-+#endif
-+ int blog = softnet_data[cpu].input_pkt_queue.qlen;
-+ int avg_blog = softnet_data[cpu].avg_blog;
-+
-+ avg_blog = (avg_blog >> 1)+ (blog >> 1);
-+
-+ if (avg_blog > mod_cong) {
-+ /* Above moderate congestion levels. */
-+ softnet_data[cpu].cng_level = NET_RX_CN_HIGH;
-+#ifdef RAND_LIE
-+ rd = net_random();
-+ rq = rd % netdev_max_backlog;
-+ if (rq < avg_blog) /* unlucky bastard */
-+ softnet_data[cpu].cng_level = NET_RX_DROP;
-+#endif
-+ } else if (avg_blog > lo_cong) {
-+ softnet_data[cpu].cng_level = NET_RX_CN_MOD;
-+#ifdef RAND_LIE
-+ rd = net_random();
-+ rq = rd % netdev_max_backlog;
-+ if (rq < avg_blog) /* unlucky bastard */
-+ softnet_data[cpu].cng_level = NET_RX_CN_HIGH;
-+#endif
-+ } else if (avg_blog > no_cong)
-+ softnet_data[cpu].cng_level = NET_RX_CN_LOW;
-+ else /* no congestion */
-+ softnet_data[cpu].cng_level = NET_RX_SUCCESS;
-+
-+ softnet_data[cpu].avg_blog = avg_blog;
-+}
-+
-+#ifdef OFFLINE_SAMPLE
-+static void sample_queue(unsigned long dummy)
-+{
-+/* 10 ms 0r 1ms -- i dont care -- JHS */
-+ int next_tick = 1;
-+ int cpu = smp_processor_id();
-+
-+ get_sample_stats(cpu);
-+ next_tick += jiffies;
-+ mod_timer(&samp_timer, next_tick);
-+}
-+#endif
-+
-+
-+/**
-+ * netif_rx - post buffer to the network code
-+ * @skb: buffer to post
-+ *
-+ * This function receives a packet from a device driver and queues it for
-+ * the upper (protocol) levels to process. It always succeeds. The buffer
-+ * may be dropped during processing for congestion control or by the
-+ * protocol layers.
-+ *
-+ * return values:
-+ * NET_RX_SUCCESS (no congestion)
-+ * NET_RX_CN_LOW (low congestion)
-+ * NET_RX_CN_MOD (moderate congestion)
-+ * NET_RX_CN_HIGH (high congestion)
-+ * NET_RX_DROP (packet was dropped)
-+ *
-+ *
-+ */
-+
-+int netif_rx(struct sk_buff *skb)
-+{
-+ int this_cpu = smp_processor_id();
-+ struct softnet_data *queue;
-+ unsigned long flags;
-+
-+ if (skb->stamp.tv_sec == 0)
-+ do_gettimeofday(&skb->stamp);
-+
-+ /* The code is rearranged so that the path is the most
-+ short when CPU is congested, but is still operating.
-+ */
-+ queue = &softnet_data[this_cpu];
-+
-+ local_irq_save(flags);
-+
-+ netdev_rx_stat[this_cpu].total++;
-+ if (queue->input_pkt_queue.qlen <= netdev_max_backlog) {
-+ if (queue->input_pkt_queue.qlen) {
-+ if (queue->throttle)
-+ goto drop;
-+
-+enqueue:
-+ dev_hold(skb->dev);
-+ __skb_queue_tail(&queue->input_pkt_queue,skb);
-+ local_irq_restore(flags);
-+#ifndef OFFLINE_SAMPLE
-+ get_sample_stats(this_cpu);
-+#endif
-+ return queue->cng_level;
-+ }
-+
-+ if (queue->throttle) {
-+ queue->throttle = 0;
-+#ifdef CONFIG_NET_HW_FLOWCONTROL
-+ if (atomic_dec_and_test(&netdev_dropping))
-+ netdev_wakeup();
-+#endif
-+ }
-+
-+ netif_rx_schedule(&queue->blog_dev);
-+ goto enqueue;
-+ }
-+
-+ if (queue->throttle == 0) {
-+ queue->throttle = 1;
-+ netdev_rx_stat[this_cpu].throttled++;
-+#ifdef CONFIG_NET_HW_FLOWCONTROL
-+ atomic_inc(&netdev_dropping);
-+#endif
-+ }
-+
-+drop:
-+ netdev_rx_stat[this_cpu].dropped++;
-+ local_irq_restore(flags);
-+
-+ kfree_skb(skb);
-+ return NET_RX_DROP;
-+}
-+
-+/* Deliver skb to an old protocol, which is not threaded well
-+ or which do not understand shared skbs.
-+ */
-+static int deliver_to_old_ones(struct packet_type *pt, struct sk_buff *skb, int last)
-+{
-+ static spinlock_t net_bh_lock = SPIN_LOCK_UNLOCKED;
-+ int ret = NET_RX_DROP;
-+
-+
-+ if (!last) {
-+ skb = skb_clone(skb, GFP_ATOMIC);
-+ if (skb == NULL)
-+ return ret;
-+ }
-+ if (skb_is_nonlinear(skb) && skb_linearize(skb, GFP_ATOMIC) != 0) {
-+ kfree_skb(skb);
-+ return ret;
-+ }
-+
-+ /* The assumption (correct one) is that old protocols
-+ did not depened on BHs different of NET_BH and TIMER_BH.
-+ */
-+
-+ /* Emulate NET_BH with special spinlock */
-+ spin_lock(&net_bh_lock);
-+
-+ /* Disable timers and wait for all timers completion */
-+ tasklet_disable(bh_task_vec+TIMER_BH);
-+
-+ ret = pt->func(skb, skb->dev, pt);
-+
-+ tasklet_hi_enable(bh_task_vec+TIMER_BH);
-+ spin_unlock(&net_bh_lock);
-+ return ret;
-+}
-+
-+static __inline__ void skb_bond(struct sk_buff *skb)
-+{
-+ struct net_device *dev = skb->dev;
-+
-+ if (dev->master) {
-+ skb->real_dev = skb->dev;
-+ skb->dev = dev->master;
-+ }
-+}
-+
-+static void net_tx_action(struct softirq_action *h)
-+{
-+ int cpu = smp_processor_id();
-+
-+ if (softnet_data[cpu].completion_queue) {
-+ struct sk_buff *clist;
-+
-+ local_irq_disable();
-+ clist = softnet_data[cpu].completion_queue;
-+ softnet_data[cpu].completion_queue = NULL;
-+ local_irq_enable();
-+
-+ while (clist != NULL) {
-+ struct sk_buff *skb = clist;
-+ clist = clist->next;
-+
-+ BUG_TRAP(atomic_read(&skb->users) == 0);
-+ __kfree_skb(skb);
-+ }
-+ }
-+
-+ if (softnet_data[cpu].output_queue) {
-+ struct net_device *head;
-+
-+ local_irq_disable();
-+ head = softnet_data[cpu].output_queue;
-+ softnet_data[cpu].output_queue = NULL;
-+ local_irq_enable();
-+
-+ while (head != NULL) {
-+ struct net_device *dev = head;
-+ head = head->next_sched;
-+
-+ smp_mb__before_clear_bit();
-+ clear_bit(__LINK_STATE_SCHED, &dev->state);
-+
-+ if (spin_trylock(&dev->queue_lock)) {
-+ qdisc_run(dev);
-+ spin_unlock(&dev->queue_lock);
-+ } else {
-+ netif_schedule(dev);
-+ }
-+ }
-+ }
-+}
-+
-+
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+void (*br_handle_frame_hook)(struct sk_buff *skb) = NULL;
-+#endif
-+
-+static __inline__ int handle_bridge(struct sk_buff *skb,
-+ struct packet_type *pt_prev)
-+{
-+ int ret = NET_RX_DROP;
-+
-+ if (pt_prev) {
-+ if (!pt_prev->data)
-+ ret = deliver_to_old_ones(pt_prev, skb, 0);
-+ else {
-+ atomic_inc(&skb->users);
-+ ret = pt_prev->func(skb, skb->dev, pt_prev);
-+ }
-+ }
-+
-+ br_handle_frame_hook(skb);
-+ return ret;
-+}
-+
-+
-+#ifdef CONFIG_NET_DIVERT
-+static inline int handle_diverter(struct sk_buff *skb)
-+{
-+ /* if diversion is supported on device, then divert */
-+ if (skb->dev->divert && skb->dev->divert->divert)
-+ divert_frame(skb);
-+ return 0;
-+}
-+#endif /* CONFIG_NET_DIVERT */
-+
-+int netif_receive_skb(struct sk_buff *skb)
-+{
-+ struct packet_type *ptype, *pt_prev;
-+ int ret = NET_RX_DROP;
-+ unsigned short type;
-+
-+ if (skb->stamp.tv_sec == 0)
-+ do_gettimeofday(&skb->stamp);
-+
-+ skb_bond(skb);
-+
-+ netdev_rx_stat[smp_processor_id()].total++;
-+
-+#ifdef CONFIG_NET_FASTROUTE
-+ if (skb->pkt_type == PACKET_FASTROUTE) {
-+ netdev_rx_stat[smp_processor_id()].fastroute_deferred_out++;
-+ return dev_queue_xmit(skb);
-+ }
-+#endif
-+
-+ skb->h.raw = skb->nh.raw = skb->data;
-+
-+ pt_prev = NULL;
-+ for (ptype = ptype_all; ptype; ptype = ptype->next) {
-+ if (!ptype->dev || ptype->dev == skb->dev) {
-+ if (pt_prev) {
-+ if (!pt_prev->data) {
-+ ret = deliver_to_old_ones(pt_prev, skb, 0);
-+ } else {
-+ atomic_inc(&skb->users);
-+ ret = pt_prev->func(skb, skb->dev, pt_prev);
-+ }
-+ }
-+ pt_prev = ptype;
-+ }
-+ }
-+
-+#ifdef CONFIG_NET_DIVERT
-+ if (skb->dev->divert && skb->dev->divert->divert)
-+ ret = handle_diverter(skb);
-+#endif /* CONFIG_NET_DIVERT */
-+
-+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-+ if (skb->dev->br_port != NULL && br_handle_frame_hook != NULL &&
-+ skb->pkt_type != PACKET_LOOPBACK) {
-+ return handle_bridge(skb, pt_prev);
-+ }
-+#endif
-+
-+ type = skb->protocol;
-+ for (ptype=ptype_base[ntohs(type)&15];ptype;ptype=ptype->next) {
-+ if (ptype->type == type &&
-+ (!ptype->dev || ptype->dev == skb->dev)) {
-+ if (pt_prev) {
-+ if (!pt_prev->data) {
-+ ret = deliver_to_old_ones(pt_prev, skb, 0);
-+ } else {
-+ atomic_inc(&skb->users);
-+ ret = pt_prev->func(skb, skb->dev, pt_prev);
-+ }
-+ }
-+ pt_prev = ptype;
-+ }
-+ }
-+
-+ if (pt_prev) {
-+ if (!pt_prev->data) {
-+ ret = deliver_to_old_ones(pt_prev, skb, 1);
-+ } else {
-+ ret = pt_prev->func(skb, skb->dev, pt_prev);
-+ }
-+ } else {
-+ kfree_skb(skb);
-+ /* Jamal, now you will not able to escape explaining
-+ * me how you were going to use this. :-)
-+ */
-+ ret = NET_RX_DROP;
-+ }
-+
-+ return ret;
-+}
-+
-+static int process_backlog(struct net_device *backlog_dev, int *budget)
-+{
-+ int work = 0;
-+ int quota = min(backlog_dev->quota, *budget);
-+ int this_cpu = smp_processor_id();
-+ struct softnet_data *queue = &softnet_data[this_cpu];
-+ unsigned long start_time = jiffies;
-+
-+ for (;;) {
-+ struct sk_buff *skb;
-+ struct net_device *dev;
-+
-+ local_irq_disable();
-+ skb = __skb_dequeue(&queue->input_pkt_queue);
-+ if (skb == NULL)
-+ goto job_done;
-+ local_irq_enable();
-+
-+ dev = skb->dev;
-+
-+ netif_receive_skb(skb);
-+
-+ dev_put(dev);
-+
-+ work++;
-+
-+ if (work >= quota || jiffies - start_time > 1)
-+ break;
-+
-+#ifdef CONFIG_NET_HW_FLOWCONTROL
-+ if (queue->throttle && queue->input_pkt_queue.qlen < no_cong_thresh ) {
-+ queue->throttle = 0;
-+ if (atomic_dec_and_test(&netdev_dropping)) {
-+ netdev_wakeup();
-+ break;
-+ }
-+ }
-+#endif
-+ }
-+
-+ backlog_dev->quota -= work;
-+ *budget -= work;
-+ return -1;
-+
-+job_done:
-+ backlog_dev->quota -= work;
-+ *budget -= work;
-+
-+ list_del(&backlog_dev->poll_list);
-+ smp_mb__before_clear_bit();
-+ netif_poll_enable(backlog_dev);
-+
-+ if (queue->throttle) {
-+ queue->throttle = 0;
-+#ifdef CONFIG_NET_HW_FLOWCONTROL
-+ if (atomic_dec_and_test(&netdev_dropping))
-+ netdev_wakeup();
-+#endif
-+ }
-+ local_irq_enable();
-+ return 0;
-+}
-+
-+static void net_rx_action(struct softirq_action *h)
-+{
-+ int this_cpu = smp_processor_id();
-+ struct softnet_data *queue = &softnet_data[this_cpu];
-+ unsigned long start_time = jiffies;
-+ int budget = netdev_max_backlog;
-+
-+ br_read_lock(BR_NETPROTO_LOCK);
-+ local_irq_disable();
-+
-+ while (!list_empty(&queue->poll_list)) {
-+ struct net_device *dev;
-+
-+ if (budget <= 0 || jiffies - start_time > 1)
-+ goto softnet_break;
-+
-+ local_irq_enable();
-+
-+ dev = list_entry(queue->poll_list.next, struct net_device, poll_list);
-+
-+ if (dev->quota <= 0 || dev->poll(dev, &budget)) {
-+ local_irq_disable();
-+ list_del(&dev->poll_list);
-+ list_add_tail(&dev->poll_list, &queue->poll_list);
-+ if (dev->quota < 0)
-+ dev->quota += dev->weight;
-+ else
-+ dev->quota = dev->weight;
-+ } else {
-+ dev_put(dev);
-+ local_irq_disable();
-+ }
-+ }
-+
-+ local_irq_enable();
-+ br_read_unlock(BR_NETPROTO_LOCK);
-+ return;
-+
-+softnet_break:
-+ netdev_rx_stat[this_cpu].time_squeeze++;
-+ __cpu_raise_softirq(this_cpu, NET_RX_SOFTIRQ);
-+
-+ local_irq_enable();
-+ br_read_unlock(BR_NETPROTO_LOCK);
-+}
-+
-+static gifconf_func_t * gifconf_list [NPROTO];
-+
-+/**
-+ * register_gifconf - register a SIOCGIF handler
-+ * @family: Address family
-+ * @gifconf: Function handler
-+ *
-+ * Register protocol dependent address dumping routines. The handler
-+ * that is passed must not be freed or reused until it has been replaced
-+ * by another handler.
-+ */
-+
-+int register_gifconf(unsigned int family, gifconf_func_t * gifconf)
-+{
-+ if (family>=NPROTO)
-+ return -EINVAL;
-+ gifconf_list[family] = gifconf;
-+ return 0;
-+}
-+
-+
-+/*
-+ * Map an interface index to its name (SIOCGIFNAME)
-+ */
-+
-+/*
-+ * We need this ioctl for efficient implementation of the
-+ * if_indextoname() function required by the IPv6 API. Without
-+ * it, we would have to search all the interfaces to find a
-+ * match. --pb
-+ */
-+
-+static int dev_ifname(struct ifreq *arg)
-+{
-+ struct net_device *dev;
-+ struct ifreq ifr;
-+
-+ /*
-+ * Fetch the caller's info block.
-+ */
-+
-+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
-+ return -EFAULT;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_index(ifr.ifr_ifindex);
-+ if (!dev) {
-+ read_unlock(&dev_base_lock);
-+ return -ENODEV;
-+ }
-+
-+ strcpy(ifr.ifr_name, dev->name);
-+ read_unlock(&dev_base_lock);
-+
-+ if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
-+ return -EFAULT;
-+ return 0;
-+}
-+
-+/*
-+ * Perform a SIOCGIFCONF call. This structure will change
-+ * size eventually, and there is nothing I can do about it.
-+ * Thus we will need a 'compatibility mode'.
-+ */
-+
-+static int dev_ifconf(char *arg)
-+{
-+ struct ifconf ifc;
-+ struct net_device *dev;
-+ char *pos;
-+ int len;
-+ int total;
-+ int i;
-+
-+ /*
-+ * Fetch the caller's info block.
-+ */
-+
-+ if (copy_from_user(&ifc, arg, sizeof(struct ifconf)))
-+ return -EFAULT;
-+
-+ pos = ifc.ifc_buf;
-+ len = ifc.ifc_len;
-+
-+ /*
-+ * Loop over the interfaces, and write an info block for each.
-+ */
-+
-+ total = 0;
-+ for (dev = dev_base; dev != NULL; dev = dev->next) {
-+ for (i=0; i<NPROTO; i++) {
-+ if (gifconf_list[i]) {
-+ int done;
-+ if (pos==NULL) {
-+ done = gifconf_list[i](dev, NULL, 0);
-+ } else {
-+ done = gifconf_list[i](dev, pos+total, len-total);
-+ }
-+ if (done<0) {
-+ return -EFAULT;
-+ }
-+ total += done;
-+ }
-+ }
-+ }
-+
-+ /*
-+ * All done. Write the updated control block back to the caller.
-+ */
-+ ifc.ifc_len = total;
-+
-+ if (copy_to_user(arg, &ifc, sizeof(struct ifconf)))
-+ return -EFAULT;
-+
-+ /*
-+ * Both BSD and Solaris return 0 here, so we do too.
-+ */
-+ return 0;
-+}
-+
-+/*
-+ * This is invoked by the /proc filesystem handler to display a device
-+ * in detail.
-+ */
-+
-+#ifdef CONFIG_PROC_FS
-+
-+static int sprintf_stats(char *buffer, struct net_device *dev)
-+{
-+ struct net_device_stats *stats = (dev->get_stats ? dev->get_stats(dev): NULL);
-+ int size;
-+
-+ if (stats)
-+ size = sprintf(buffer, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu %8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
-+ dev->name,
-+ stats->rx_bytes,
-+ stats->rx_packets, stats->rx_errors,
-+ stats->rx_dropped + stats->rx_missed_errors,
-+ stats->rx_fifo_errors,
-+ stats->rx_length_errors + stats->rx_over_errors
-+ + stats->rx_crc_errors + stats->rx_frame_errors,
-+ stats->rx_compressed, stats->multicast,
-+ stats->tx_bytes,
-+ stats->tx_packets, stats->tx_errors, stats->tx_dropped,
-+ stats->tx_fifo_errors, stats->collisions,
-+ stats->tx_carrier_errors + stats->tx_aborted_errors
-+ + stats->tx_window_errors + stats->tx_heartbeat_errors,
-+ stats->tx_compressed);
-+ else
-+ size = sprintf(buffer, "%6s: No statistics available.\n", dev->name);
-+
-+ return size;
-+}
-+
-+/*
-+ * Called from the PROCfs module. This now uses the new arbitrary sized /proc/net interface
-+ * to create /proc/net/dev
-+ */
-+
-+static int dev_get_info(char *buffer, char **start, off_t offset, int length)
-+{
-+ int len = 0;
-+ off_t begin = 0;
-+ off_t pos = 0;
-+ int size;
-+ struct net_device *dev;
-+
-+
-+ size = sprintf(buffer,
-+ "Inter-| Receive | Transmit\n"
-+ " face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed\n");
-+
-+ pos += size;
-+ len += size;
-+
-+
-+ read_lock(&dev_base_lock);
-+ for (dev = dev_base; dev != NULL; dev = dev->next) {
-+ size = sprintf_stats(buffer+len, dev);
-+ len += size;
-+ pos = begin + len;
-+
-+ if (pos < offset) {
-+ len = 0;
-+ begin = pos;
-+ }
-+ if (pos > offset + length)
-+ break;
-+ }
-+ read_unlock(&dev_base_lock);
-+
-+ *start = buffer + (offset - begin); /* Start of wanted data */
-+ len -= (offset - begin); /* Start slop */
-+ if (len > length)
-+ len = length; /* Ending slop */
-+ if (len < 0)
-+ len = 0;
-+ return len;
-+}
-+
-+static int dev_proc_stats(char *buffer, char **start, off_t offset,
-+ int length, int *eof, void *data)
-+{
-+ int i, lcpu;
-+ int len=0;
-+
-+ for (lcpu=0; lcpu<smp_num_cpus; lcpu++) {
-+ i = cpu_logical_map(lcpu);
-+ len += sprintf(buffer+len, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
-+ netdev_rx_stat[i].total,
-+ netdev_rx_stat[i].dropped,
-+ netdev_rx_stat[i].time_squeeze,
-+ netdev_rx_stat[i].throttled,
-+ netdev_rx_stat[i].fastroute_hit,
-+ netdev_rx_stat[i].fastroute_success,
-+ netdev_rx_stat[i].fastroute_defer,
-+ netdev_rx_stat[i].fastroute_deferred_out,
-+#if 0
-+ netdev_rx_stat[i].fastroute_latency_reduction
-+#else
-+ netdev_rx_stat[i].cpu_collision
-+#endif
-+ );
-+ }
-+
-+ len -= offset;
-+
-+ if (len > length)
-+ len = length;
-+ if (len < 0)
-+ len = 0;
-+
-+ *start = buffer + offset;
-+ *eof = 1;
-+
-+ return len;
-+}
-+
-+#endif /* CONFIG_PROC_FS */
-+
-+
-+/**
-+ * netdev_set_master - set up master/slave pair
-+ * @slave: slave device
-+ * @master: new master device
-+ *
-+ * Changes the master device of the slave. Pass %NULL to break the
-+ * bonding. The caller must hold the RTNL semaphore. On a failure
-+ * a negative errno code is returned. On success the reference counts
-+ * are adjusted, %RTM_NEWLINK is sent to the routing socket and the
-+ * function returns zero.
-+ */
-+
-+int netdev_set_master(struct net_device *slave, struct net_device *master)
-+{
-+ struct net_device *old = slave->master;
-+
-+ ASSERT_RTNL();
-+
-+ if (master) {
-+ if (old)
-+ return -EBUSY;
-+ dev_hold(master);
-+ }
-+
-+ br_write_lock_bh(BR_NETPROTO_LOCK);
-+ slave->master = master;
-+ br_write_unlock_bh(BR_NETPROTO_LOCK);
-+
-+ if (old)
-+ dev_put(old);
-+
-+ if (master)
-+ slave->flags |= IFF_SLAVE;
-+ else
-+ slave->flags &= ~IFF_SLAVE;
-+
-+ rtmsg_ifinfo(RTM_NEWLINK, slave, IFF_SLAVE);
-+ return 0;
-+}
-+
-+/**
-+ * dev_set_promiscuity - update promiscuity count on a device
-+ * @dev: device
-+ * @inc: modifier
-+ *
-+ * Add or remove promsicuity from a device. While the count in the device
-+ * remains above zero the interface remains promiscuous. Once it hits zero
-+ * the device reverts back to normal filtering operation. A negative inc
-+ * value is used to drop promiscuity on the device.
-+ */
-+
-+void dev_set_promiscuity(struct net_device *dev, int inc)
-+{
-+ unsigned short old_flags = dev->flags;
-+
-+ dev->flags |= IFF_PROMISC;
-+ if ((dev->promiscuity += inc) == 0)
-+ dev->flags &= ~IFF_PROMISC;
-+ if (dev->flags^old_flags) {
-+#ifdef CONFIG_NET_FASTROUTE
-+ if (dev->flags&IFF_PROMISC) {
-+ netdev_fastroute_obstacles++;
-+ dev_clear_fastroute(dev);
-+ } else
-+ netdev_fastroute_obstacles--;
-+#endif
-+ dev_mc_upload(dev);
-+ printk(KERN_INFO "device %s %s promiscuous mode\n",
-+ dev->name, (dev->flags&IFF_PROMISC) ? "entered" : "left");
-+ }
-+}
-+
-+/**
-+ * dev_set_allmulti - update allmulti count on a device
-+ * @dev: device
-+ * @inc: modifier
-+ *
-+ * Add or remove reception of all multicast frames to a device. While the
-+ * count in the device remains above zero the interface remains listening
-+ * to all interfaces. Once it hits zero the device reverts back to normal
-+ * filtering operation. A negative @inc value is used to drop the counter
-+ * when releasing a resource needing all multicasts.
-+ */
-+
-+void dev_set_allmulti(struct net_device *dev, int inc)
-+{
-+ unsigned short old_flags = dev->flags;
-+
-+ dev->flags |= IFF_ALLMULTI;
-+ if ((dev->allmulti += inc) == 0)
-+ dev->flags &= ~IFF_ALLMULTI;
-+ if (dev->flags^old_flags)
-+ dev_mc_upload(dev);
-+}
-+
-+int dev_change_flags(struct net_device *dev, unsigned flags)
-+{
-+ int ret;
-+ int old_flags = dev->flags;
-+
-+ /*
-+ * Set the flags on our device.
-+ */
-+
-+ dev->flags = (flags & (IFF_DEBUG|IFF_NOTRAILERS|IFF_NOARP|IFF_DYNAMIC|
-+ IFF_MULTICAST|IFF_PORTSEL|IFF_AUTOMEDIA)) |
-+ (dev->flags & (IFF_UP|IFF_VOLATILE|IFF_PROMISC|IFF_ALLMULTI));
-+
-+ /*
-+ * Load in the correct multicast list now the flags have changed.
-+ */
-+
-+ dev_mc_upload(dev);
-+
-+ /*
-+ * Have we downed the interface. We handle IFF_UP ourselves
-+ * according to user attempts to set it, rather than blindly
-+ * setting it.
-+ */
-+
-+ ret = 0;
-+ if ((old_flags^flags)&IFF_UP) /* Bit is different ? */
-+ {
-+ ret = ((old_flags & IFF_UP) ? dev_close : dev_open)(dev);
-+
-+ if (ret == 0)
-+ dev_mc_upload(dev);
-+ }
-+
-+ if (dev->flags&IFF_UP &&
-+ ((old_flags^dev->flags)&~(IFF_UP|IFF_PROMISC|IFF_ALLMULTI|IFF_VOLATILE)))
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
-+
-+ if ((flags^dev->gflags)&IFF_PROMISC) {
-+ int inc = (flags&IFF_PROMISC) ? +1 : -1;
-+ dev->gflags ^= IFF_PROMISC;
-+ dev_set_promiscuity(dev, inc);
-+ }
-+
-+ /* NOTE: order of synchronization of IFF_PROMISC and IFF_ALLMULTI
-+ is important. Some (broken) drivers set IFF_PROMISC, when
-+ IFF_ALLMULTI is requested not asking us and not reporting.
-+ */
-+ if ((flags^dev->gflags)&IFF_ALLMULTI) {
-+ int inc = (flags&IFF_ALLMULTI) ? +1 : -1;
-+ dev->gflags ^= IFF_ALLMULTI;
-+ dev_set_allmulti(dev, inc);
-+ }
-+
-+ if (old_flags^dev->flags)
-+ rtmsg_ifinfo(RTM_NEWLINK, dev, old_flags^dev->flags);
-+
-+ return ret;
-+}
-+
-+/*
-+ * Perform the SIOCxIFxxx calls.
-+ */
-+
-+static int dev_ifsioc(struct ifreq *ifr, unsigned int cmd)
-+{
-+ struct net_device *dev;
-+ int err;
-+
-+ if ((dev = __dev_get_by_name(ifr->ifr_name)) == NULL)
-+ return -ENODEV;
-+
-+ switch(cmd)
-+ {
-+ case SIOCGIFFLAGS: /* Get interface flags */
-+ ifr->ifr_flags = (dev->flags&~(IFF_PROMISC|IFF_ALLMULTI|IFF_RUNNING))
-+ |(dev->gflags&(IFF_PROMISC|IFF_ALLMULTI));
-+ if (netif_running(dev) && netif_carrier_ok(dev))
-+ ifr->ifr_flags |= IFF_RUNNING;
-+ return 0;
-+
-+ case SIOCSIFFLAGS: /* Set interface flags */
-+ return dev_change_flags(dev, ifr->ifr_flags);
-+
-+ case SIOCGIFMETRIC: /* Get the metric on the interface (currently unused) */
-+ ifr->ifr_metric = 0;
-+ return 0;
-+
-+ case SIOCSIFMETRIC: /* Set the metric on the interface (currently unused) */
-+ return -EOPNOTSUPP;
-+
-+ case SIOCGIFMTU: /* Get the MTU of a device */
-+ ifr->ifr_mtu = dev->mtu;
-+ return 0;
-+
-+ case SIOCSIFMTU: /* Set the MTU of a device */
-+ if (ifr->ifr_mtu == dev->mtu)
-+ return 0;
-+
-+ /*
-+ * MTU must be positive.
-+ */
-+
-+ if (ifr->ifr_mtu<0)
-+ return -EINVAL;
-+
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+
-+ if (dev->change_mtu)
-+ err = dev->change_mtu(dev, ifr->ifr_mtu);
-+ else {
-+ dev->mtu = ifr->ifr_mtu;
-+ err = 0;
-+ }
-+ if (!err && dev->flags&IFF_UP)
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGEMTU, dev);
-+ return err;
-+
-+ case SIOCGIFHWADDR:
-+ memcpy(ifr->ifr_hwaddr.sa_data,dev->dev_addr, MAX_ADDR_LEN);
-+ ifr->ifr_hwaddr.sa_family=dev->type;
-+ return 0;
-+
-+ case SIOCSIFHWADDR:
-+ if (dev->set_mac_address == NULL)
-+ return -EOPNOTSUPP;
-+ if (ifr->ifr_hwaddr.sa_family!=dev->type)
-+ return -EINVAL;
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ err = dev->set_mac_address(dev, &ifr->ifr_hwaddr);
-+ if (!err)
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGEADDR, dev);
-+ return err;
-+
-+ case SIOCSIFHWBROADCAST:
-+ if (ifr->ifr_hwaddr.sa_family!=dev->type)
-+ return -EINVAL;
-+ memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data, MAX_ADDR_LEN);
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGEADDR, dev);
-+ return 0;
-+
-+ case SIOCGIFMAP:
-+ ifr->ifr_map.mem_start=dev->mem_start;
-+ ifr->ifr_map.mem_end=dev->mem_end;
-+ ifr->ifr_map.base_addr=dev->base_addr;
-+ ifr->ifr_map.irq=dev->irq;
-+ ifr->ifr_map.dma=dev->dma;
-+ ifr->ifr_map.port=dev->if_port;
-+ return 0;
-+
-+ case SIOCSIFMAP:
-+ if (dev->set_config) {
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ return dev->set_config(dev,&ifr->ifr_map);
-+ }
-+ return -EOPNOTSUPP;
-+
-+ case SIOCADDMULTI:
-+ if (dev->set_multicast_list == NULL ||
-+ ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
-+ return -EINVAL;
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ dev_mc_add(dev,ifr->ifr_hwaddr.sa_data, dev->addr_len, 1);
-+ return 0;
-+
-+ case SIOCDELMULTI:
-+ if (dev->set_multicast_list == NULL ||
-+ ifr->ifr_hwaddr.sa_family!=AF_UNSPEC)
-+ return -EINVAL;
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ dev_mc_delete(dev,ifr->ifr_hwaddr.sa_data,dev->addr_len, 1);
-+ return 0;
-+
-+ case SIOCGIFINDEX:
-+ ifr->ifr_ifindex = dev->ifindex;
-+ return 0;
-+
-+ case SIOCGIFTXQLEN:
-+ ifr->ifr_qlen = dev->tx_queue_len;
-+ return 0;
-+
-+ case SIOCSIFTXQLEN:
-+ if (ifr->ifr_qlen<0)
-+ return -EINVAL;
-+ dev->tx_queue_len = ifr->ifr_qlen;
-+ return 0;
-+
-+ case SIOCSIFNAME:
-+ if (dev->flags&IFF_UP)
-+ return -EBUSY;
-+ /* Check if name contains a wildcard */
-+ if (strchr(ifr->ifr_newname, '%')) {
-+ char format[IFNAMSIZ + 1];
-+ int ret;
-+ memcpy(format, ifr->ifr_newname, IFNAMSIZ);
-+ format[IFNAMSIZ-1] = 0;
-+ /* Find a free name based on format.
-+ * dev_alloc_name() replaces "%d" with at max
-+ * 2 digits, so no name overflow. - Jean II */
-+ ret = dev_alloc_name(dev, format);
-+ if (ret < 0)
-+ return ret;
-+ /* Copy the new name back to caller. */
-+ strncpy(ifr->ifr_newname, dev->name, IFNAMSIZ);
-+ } else {
-+ if (__dev_get_by_name(ifr->ifr_newname))
-+ return -EEXIST;
-+ memcpy(dev->name, ifr->ifr_newname, IFNAMSIZ);
-+ dev->name[IFNAMSIZ-1] = 0;
-+ }
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGENAME, dev);
-+ return 0;
-+
-+ /*
-+ * Unknown or private ioctl
-+ */
-+
-+ default:
-+ if ((cmd >= SIOCDEVPRIVATE &&
-+ cmd <= SIOCDEVPRIVATE + 15) ||
-+ cmd == SIOCBONDENSLAVE ||
-+ cmd == SIOCBONDRELEASE ||
-+ cmd == SIOCBONDSETHWADDR ||
-+ cmd == SIOCBONDSLAVEINFOQUERY ||
-+ cmd == SIOCBONDINFOQUERY ||
-+ cmd == SIOCBONDCHANGEACTIVE ||
-+ cmd == SIOCGMIIPHY ||
-+ cmd == SIOCGMIIREG ||
-+ cmd == SIOCSMIIREG ||
-+ cmd == SIOCWANDEV) {
-+ if (dev->do_ioctl) {
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ return dev->do_ioctl(dev, ifr, cmd);
-+ }
-+ return -EOPNOTSUPP;
-+ }
-+
-+ }
-+ return -EINVAL;
-+}
-+
-+/*
-+ * This function handles all "interface"-type I/O control requests. The actual
-+ * 'doing' part of this is dev_ifsioc above.
-+ */
-+
-+/**
-+ * dev_ioctl - network device ioctl
-+ * @cmd: command to issue
-+ * @arg: pointer to a struct ifreq in user space
-+ *
-+ * Issue ioctl functions to devices. This is normally called by the
-+ * user space syscall interfaces but can sometimes be useful for
-+ * other purposes. The return value is the return from the syscall if
-+ * positive or a negative errno code on error.
-+ */
-+
-+int dev_ioctl(unsigned int cmd, void *arg)
-+{
-+ struct ifreq ifr;
-+ int ret;
-+ char *colon;
-+
-+ /* One special case: SIOCGIFCONF takes ifconf argument
-+ and requires shared lock, because it sleeps writing
-+ to user space.
-+ */
-+
-+ if (cmd == SIOCGIFCONF) {
-+ rtnl_shlock();
-+ ret = dev_ifconf((char *) arg);
-+ rtnl_shunlock();
-+ return ret;
-+ }
-+ if (cmd == SIOCGIFNAME) {
-+ return dev_ifname((struct ifreq *)arg);
-+ }
-+
-+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
-+ return -EFAULT;
-+
-+ ifr.ifr_name[IFNAMSIZ-1] = 0;
-+
-+ colon = strchr(ifr.ifr_name, ':');
-+ if (colon)
-+ *colon = 0;
-+
-+ /*
-+ * See which interface the caller is talking about.
-+ */
-+
-+ switch(cmd)
-+ {
-+ /*
-+ * These ioctl calls:
-+ * - can be done by all.
-+ * - atomic and do not require locking.
-+ * - return a value
-+ */
-+
-+ case SIOCGIFFLAGS:
-+ case SIOCGIFMETRIC:
-+ case SIOCGIFMTU:
-+ case SIOCGIFHWADDR:
-+ case SIOCGIFSLAVE:
-+ case SIOCGIFMAP:
-+ case SIOCGIFINDEX:
-+ case SIOCGIFTXQLEN:
-+ dev_load(ifr.ifr_name);
-+ read_lock(&dev_base_lock);
-+ ret = dev_ifsioc(&ifr, cmd);
-+ read_unlock(&dev_base_lock);
-+ if (!ret) {
-+ if (colon)
-+ *colon = ':';
-+ if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
-+ return -EFAULT;
-+ }
-+ return ret;
-+
-+ case SIOCETHTOOL:
-+ dev_load(ifr.ifr_name);
-+ rtnl_lock();
-+ ret = dev_ethtool(&ifr);
-+ rtnl_unlock();
-+ if (!ret) {
-+ if (colon)
-+ *colon = ':';
-+ if (copy_to_user(arg, &ifr,
-+ sizeof(struct ifreq)))
-+ ret = -EFAULT;
-+ }
-+ return ret;
-+
-+ /*
-+ * These ioctl calls:
-+ * - require superuser power.
-+ * - require strict serialization.
-+ * - return a value
-+ */
-+
-+ case SIOCSIFNAME:
-+ case SIOCGMIIPHY:
-+ case SIOCGMIIREG:
-+ if (!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+ dev_load(ifr.ifr_name);
-+ dev_probe_lock();
-+ rtnl_lock();
-+ ret = dev_ifsioc(&ifr, cmd);
-+ rtnl_unlock();
-+ dev_probe_unlock();
-+ if (!ret) {
-+ if (colon)
-+ *colon = ':';
-+ if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
-+ return -EFAULT;
-+ }
-+ return ret;
-+
-+ /*
-+ * These ioctl calls:
-+ * - require superuser power.
-+ * - require strict serialization.
-+ * - do not return a value
-+ */
-+
-+ case SIOCSIFFLAGS:
-+ case SIOCSIFMETRIC:
-+ case SIOCSIFMTU:
-+ case SIOCSIFMAP:
-+ case SIOCSIFHWADDR:
-+ case SIOCSIFSLAVE:
-+ case SIOCADDMULTI:
-+ case SIOCDELMULTI:
-+ case SIOCSIFHWBROADCAST:
-+ case SIOCSIFTXQLEN:
-+ case SIOCSMIIREG:
-+ case SIOCBONDENSLAVE:
-+ case SIOCBONDRELEASE:
-+ case SIOCBONDSETHWADDR:
-+ case SIOCBONDSLAVEINFOQUERY:
-+ case SIOCBONDINFOQUERY:
-+ case SIOCBONDCHANGEACTIVE:
-+ if (!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+ dev_load(ifr.ifr_name);
-+ dev_probe_lock();
-+ rtnl_lock();
-+ ret = dev_ifsioc(&ifr, cmd);
-+ rtnl_unlock();
-+ dev_probe_unlock();
-+ return ret;
-+
-+ case SIOCGIFMEM:
-+ /* Get the per device memory space. We can add this but currently
-+ do not support it */
-+ case SIOCSIFMEM:
-+ /* Set the per device memory buffer space. Not applicable in our case */
-+ case SIOCSIFLINK:
-+ return -EINVAL;
-+
-+ /*
-+ * Unknown or private ioctl.
-+ */
-+
-+ default:
-+ if (cmd == SIOCWANDEV ||
-+ (cmd >= SIOCDEVPRIVATE &&
-+ cmd <= SIOCDEVPRIVATE + 15)) {
-+ dev_load(ifr.ifr_name);
-+ dev_probe_lock();
-+ rtnl_lock();
-+ ret = dev_ifsioc(&ifr, cmd);
-+ rtnl_unlock();
-+ dev_probe_unlock();
-+ if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
-+ return -EFAULT;
-+ return ret;
-+ }
-+#ifdef WIRELESS_EXT
-+ /* Take care of Wireless Extensions */
-+ if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
-+ /* If command is `set a parameter', or
-+ * `get the encoding parameters', check if
-+ * the user has the right to do it */
-+ if (IW_IS_SET(cmd) || (cmd == SIOCGIWENCODE)) {
-+ if(!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+ }
-+ dev_load(ifr.ifr_name);
-+ rtnl_lock();
-+ /* Follow me in net/core/wireless.c */
-+ ret = wireless_process_ioctl(&ifr, cmd);
-+ rtnl_unlock();
-+ if (!ret && IW_IS_GET(cmd) &&
-+ copy_to_user(arg, &ifr, sizeof(struct ifreq)))
-+ return -EFAULT;
-+ return ret;
-+ }
-+#endif /* WIRELESS_EXT */
-+ return -EINVAL;
-+ }
-+}
-+
-+
-+/**
-+ * dev_new_index - allocate an ifindex
-+ *
-+ * Returns a suitable unique value for a new device interface
-+ * number. The caller must hold the rtnl semaphore or the
-+ * dev_base_lock to be sure it remains unique.
-+ */
-+
-+int dev_new_index(void)
-+{
-+ static int ifindex;
-+ for (;;) {
-+ if (++ifindex <= 0)
-+ ifindex=1;
-+ if (__dev_get_by_index(ifindex) == NULL)
-+ return ifindex;
-+ }
-+}
-+
-+static int dev_boot_phase = 1;
-+
-+/**
-+ * register_netdevice - register a network device
-+ * @dev: device to register
-+ *
-+ * Take a completed network device structure and add it to the kernel
-+ * interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
-+ * chain. 0 is returned on success. A negative errno code is returned
-+ * on a failure to set up the device, or if the name is a duplicate.
-+ *
-+ * Callers must hold the rtnl semaphore. See the comment at the
-+ * end of Space.c for details about the locking. You may want
-+ * register_netdev() instead of this.
-+ *
-+ * BUGS:
-+ * The locking appears insufficient to guarantee two parallel registers
-+ * will not get the same name.
-+ */
-+
-+int net_dev_init(void);
-+
-+int register_netdevice(struct net_device *dev)
-+{
-+ struct net_device *d, **dp;
-+#ifdef CONFIG_NET_DIVERT
-+ int ret;
-+#endif
-+
-+ spin_lock_init(&dev->queue_lock);
-+ spin_lock_init(&dev->xmit_lock);
-+ dev->xmit_lock_owner = -1;
-+#ifdef CONFIG_NET_FASTROUTE
-+ dev->fastpath_lock=RW_LOCK_UNLOCKED;
-+#endif
-+
-+ if (dev_boot_phase)
-+ net_dev_init();
-+
-+#ifdef CONFIG_NET_DIVERT
-+ ret = alloc_divert_blk(dev);
-+ if (ret)
-+ return ret;
-+#endif /* CONFIG_NET_DIVERT */
-+
-+ dev->iflink = -1;
-+
-+ /* Init, if this function is available */
-+ if (dev->init && dev->init(dev) != 0) {
-+#ifdef CONFIG_NET_DIVERT
-+ free_divert_blk(dev);
-+#endif
-+ return -EIO;
-+ }
-+
-+ dev->ifindex = dev_new_index();
-+ if (dev->iflink == -1)
-+ dev->iflink = dev->ifindex;
-+
-+ /* Check for existence, and append to tail of chain */
-+ for (dp=&dev_base; (d=*dp) != NULL; dp=&d->next) {
-+ if (d == dev || strcmp(d->name, dev->name) == 0) {
-+#ifdef CONFIG_NET_DIVERT
-+ free_divert_blk(dev);
-+#endif
-+ return -EEXIST;
-+ }
-+ }
-+
-+ /* Fix illegal SG+CSUM combinations. */
-+ if ((dev->features & NETIF_F_SG) &&
-+ !(dev->features & (NETIF_F_IP_CSUM |
-+ NETIF_F_NO_CSUM |
-+ NETIF_F_HW_CSUM))) {
-+ printk("%s: Dropping NETIF_F_SG since no checksum feature.\n",
-+ dev->name);
-+ dev->features &= ~NETIF_F_SG;
-+ }
-+
-+ /*
-+ * nil rebuild_header routine,
-+ * that should be never called and used as just bug trap.
-+ */
-+
-+ if (dev->rebuild_header == NULL)
-+ dev->rebuild_header = default_rebuild_header;
-+
-+ /*
-+ * Default initial state at registry is that the
-+ * device is present.
-+ */
-+
-+ set_bit(__LINK_STATE_PRESENT, &dev->state);
-+
-+ dev->next = NULL;
-+ dev_init_scheduler(dev);
-+ write_lock_bh(&dev_base_lock);
-+ *dp = dev;
-+ dev_hold(dev);
-+ dev->deadbeaf = 0;
-+ write_unlock_bh(&dev_base_lock);
-+
-+ /* Notify protocols, that a new device appeared. */
-+ notifier_call_chain(&netdev_chain, NETDEV_REGISTER, dev);
-+
-+ net_run_sbin_hotplug(dev, "register");
-+
-+ return 0;
-+}
-+
-+/**
-+ * netdev_finish_unregister - complete unregistration
-+ * @dev: device
-+ *
-+ * Destroy and free a dead device. A value of zero is returned on
-+ * success.
-+ */
-+
-+int netdev_finish_unregister(struct net_device *dev)
-+{
-+ BUG_TRAP(dev->ip_ptr==NULL);
-+ BUG_TRAP(dev->ip6_ptr==NULL);
-+ BUG_TRAP(dev->dn_ptr==NULL);
-+
-+ if (!dev->deadbeaf) {
-+ printk(KERN_ERR "Freeing alive device %p, %s\n", dev, dev->name);
-+ return 0;
-+ }
-+#ifdef NET_REFCNT_DEBUG
-+ printk(KERN_DEBUG "netdev_finish_unregister: %s%s.\n", dev->name,
-+ (dev->features & NETIF_F_DYNALLOC)?"":", old style");
-+#endif
-+ if (dev->destructor)
-+ dev->destructor(dev);
-+ if (dev->features & NETIF_F_DYNALLOC)
-+ kfree(dev);
-+ return 0;
-+}
-+
-+/**
-+ * unregister_netdevice - remove device from the kernel
-+ * @dev: device
-+ *
-+ * This function shuts down a device interface and removes it
-+ * from the kernel tables. On success 0 is returned, on a failure
-+ * a negative errno code is returned.
-+ *
-+ * Callers must hold the rtnl semaphore. See the comment at the
-+ * end of Space.c for details about the locking. You may want
-+ * unregister_netdev() instead of this.
-+ */
-+
-+int unregister_netdevice(struct net_device *dev)
-+{
-+ unsigned long now, warning_time;
-+ struct net_device *d, **dp;
-+
-+ /* If device is running, close it first. */
-+ if (dev->flags & IFF_UP)
-+ dev_close(dev);
-+
-+ BUG_TRAP(dev->deadbeaf==0);
-+ dev->deadbeaf = 1;
-+
-+ /* And unlink it from device chain. */
-+ for (dp = &dev_base; (d=*dp) != NULL; dp=&d->next) {
-+ if (d == dev) {
-+ write_lock_bh(&dev_base_lock);
-+ *dp = d->next;
-+ write_unlock_bh(&dev_base_lock);
-+ break;
-+ }
-+ }
-+ if (d == NULL) {
-+ printk(KERN_DEBUG "unregister_netdevice: device %s/%p never was registered\n", dev->name, dev);
-+ return -ENODEV;
-+ }
-+
-+ /* Synchronize to net_rx_action. */
-+ br_write_lock_bh(BR_NETPROTO_LOCK);
-+ br_write_unlock_bh(BR_NETPROTO_LOCK);
-+
-+ if (dev_boot_phase == 0) {
-+#ifdef CONFIG_NET_FASTROUTE
-+ dev_clear_fastroute(dev);
-+#endif
-+
-+ /* Shutdown queueing discipline. */
-+ dev_shutdown(dev);
-+
-+ net_run_sbin_hotplug(dev, "unregister");
-+
-+ /* Notify protocols, that we are about to destroy
-+ this device. They should clean all the things.
-+ */
-+ notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev);
-+
-+ /*
-+ * Flush the multicast chain
-+ */
-+ dev_mc_discard(dev);
-+ }
-+
-+ if (dev->uninit)
-+ dev->uninit(dev);
-+
-+ /* Notifier chain MUST detach us from master device. */
-+ BUG_TRAP(dev->master==NULL);
-+
-+#ifdef CONFIG_NET_DIVERT
-+ free_divert_blk(dev);
-+#endif
-+
-+ if (dev->features & NETIF_F_DYNALLOC) {
-+#ifdef NET_REFCNT_DEBUG
-+ if (atomic_read(&dev->refcnt) != 1)
-+ printk(KERN_DEBUG "unregister_netdevice: holding %s refcnt=%d\n", dev->name, atomic_read(&dev->refcnt)-1);
-+#endif
-+ dev_put(dev);
-+ return 0;
-+ }
-+
-+ /* Last reference is our one */
-+ if (atomic_read(&dev->refcnt) == 1) {
-+ dev_put(dev);
-+ return 0;
-+ }
-+
-+#ifdef NET_REFCNT_DEBUG
-+ printk("unregister_netdevice: waiting %s refcnt=%d\n", dev->name, atomic_read(&dev->refcnt));
-+#endif
-+
-+ /* EXPLANATION. If dev->refcnt is not now 1 (our own reference)
-+ it means that someone in the kernel still has a reference
-+ to this device and we cannot release it.
-+
-+ "New style" devices have destructors, hence we can return from this
-+ function and destructor will do all the work later. As of kernel 2.4.0
-+ there are very few "New Style" devices.
-+
-+ "Old style" devices expect that the device is free of any references
-+ upon exit from this function.
-+ We cannot return from this function until all such references have
-+ fallen away. This is because the caller of this function will probably
-+ immediately kfree(*dev) and then be unloaded via sys_delete_module.
-+
-+ So, we linger until all references fall away. The duration of the
-+ linger is basically unbounded! It is driven by, for example, the
-+ current setting of sysctl_ipfrag_time.
-+
-+ After 1 second, we start to rebroadcast unregister notifications
-+ in hope that careless clients will release the device.
-+
-+ */
-+
-+ now = warning_time = jiffies;
-+ while (atomic_read(&dev->refcnt) != 1) {
-+ if ((jiffies - now) > 1*HZ) {
-+ /* Rebroadcast unregister notification */
-+ notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev);
-+ }
-+ current->state = TASK_INTERRUPTIBLE;
-+ schedule_timeout(HZ/4);
-+ current->state = TASK_RUNNING;
-+ if ((jiffies - warning_time) > 10*HZ) {
-+ printk(KERN_EMERG "unregister_netdevice: waiting for %s to "
-+ "become free. Usage count = %d\n",
-+ dev->name, atomic_read(&dev->refcnt));
-+ warning_time = jiffies;
-+ }
-+ }
-+ dev_put(dev);
-+ return 0;
-+}
-+
-+
-+/*
-+ * Initialize the DEV module. At boot time this walks the device list and
-+ * unhooks any devices that fail to initialise (normally hardware not
-+ * present) and leaves us with a valid list of present and active devices.
-+ *
-+ */
-+
-+extern void net_device_init(void);
-+extern void ip_auto_config(void);
-+struct proc_dir_entry *proc_net_drivers;
-+#ifdef CONFIG_NET_DIVERT
-+extern void dv_init(void);
-+#endif /* CONFIG_NET_DIVERT */
-+
-+
-+/*
-+ * Callers must hold the rtnl semaphore. See the comment at the
-+ * end of Space.c for details about the locking.
-+ */
-+int __init net_dev_init(void)
-+{
-+ struct net_device *dev, **dp;
-+ int i;
-+
-+ if (!dev_boot_phase)
-+ return 0;
-+
-+
-+#ifdef CONFIG_NET_DIVERT
-+ dv_init();
-+#endif /* CONFIG_NET_DIVERT */
-+
-+ /*
-+ * Initialise the packet receive queues.
-+ */
-+
-+ for (i = 0; i < NR_CPUS; i++) {
-+ struct softnet_data *queue;
-+
-+ queue = &softnet_data[i];
-+ skb_queue_head_init(&queue->input_pkt_queue);
-+ queue->throttle = 0;
-+ queue->cng_level = 0;
-+ queue->avg_blog = 10; /* arbitrary non-zero */
-+ queue->completion_queue = NULL;
-+ INIT_LIST_HEAD(&queue->poll_list);
-+ set_bit(__LINK_STATE_START, &queue->blog_dev.state);
-+ queue->blog_dev.weight = weight_p;
-+ queue->blog_dev.poll = process_backlog;
-+ atomic_set(&queue->blog_dev.refcnt, 1);
-+ }
-+
-+#ifdef CONFIG_NET_PROFILE
-+ net_profile_init();
-+ NET_PROFILE_REGISTER(dev_queue_xmit);
-+ NET_PROFILE_REGISTER(softnet_process);
-+#endif
-+
-+#ifdef OFFLINE_SAMPLE
-+ samp_timer.expires = jiffies + (10 * HZ);
-+ add_timer(&samp_timer);
-+#endif
-+
-+ /*
-+ * Add the devices.
-+ * If the call to dev->init fails, the dev is removed
-+ * from the chain disconnecting the device until the
-+ * next reboot.
-+ *
-+ * NB At boot phase networking is dead. No locking is required.
-+ * But we still preserve dev_base_lock for sanity.
-+ */
-+
-+ dp = &dev_base;
-+ while ((dev = *dp) != NULL) {
-+ spin_lock_init(&dev->queue_lock);
-+ spin_lock_init(&dev->xmit_lock);
-+#ifdef CONFIG_NET_FASTROUTE
-+ dev->fastpath_lock = RW_LOCK_UNLOCKED;
-+#endif
-+ dev->xmit_lock_owner = -1;
-+ dev->iflink = -1;
-+ dev_hold(dev);
-+
-+ /*
-+ * Allocate name. If the init() fails
-+ * the name will be reissued correctly.
-+ */
-+ if (strchr(dev->name, '%'))
-+ dev_alloc_name(dev, dev->name);
-+
-+ /*
-+ * Check boot time settings for the device.
-+ */
-+ netdev_boot_setup_check(dev);
-+
-+ if (dev->init && dev->init(dev)) {
-+ /*
-+ * It failed to come up. It will be unhooked later.
-+ * dev_alloc_name can now advance to next suitable
-+ * name that is checked next.
-+ */
-+ dev->deadbeaf = 1;
-+ dp = &dev->next;
-+ } else {
-+ dp = &dev->next;
-+ dev->ifindex = dev_new_index();
-+ if (dev->iflink == -1)
-+ dev->iflink = dev->ifindex;
-+ if (dev->rebuild_header == NULL)
-+ dev->rebuild_header = default_rebuild_header;
-+ dev_init_scheduler(dev);
-+ set_bit(__LINK_STATE_PRESENT, &dev->state);
-+ }
-+ }
-+
-+ /*
-+ * Unhook devices that failed to come up
-+ */
-+ dp = &dev_base;
-+ while ((dev = *dp) != NULL) {
-+ if (dev->deadbeaf) {
-+ write_lock_bh(&dev_base_lock);
-+ *dp = dev->next;
-+ write_unlock_bh(&dev_base_lock);
-+ dev_put(dev);
-+ } else {
-+ dp = &dev->next;
-+ }
-+ }
-+
-+#ifdef CONFIG_PROC_FS
-+ proc_net_create("dev", 0, dev_get_info);
-+ create_proc_read_entry("net/softnet_stat", 0, 0, dev_proc_stats, NULL);
-+ proc_net_drivers = proc_mkdir("net/drivers", 0);
-+#ifdef WIRELESS_EXT
-+ /* Available in net/core/wireless.c */
-+ proc_net_create("wireless", 0, dev_get_wireless_info);
-+#endif /* WIRELESS_EXT */
-+#endif /* CONFIG_PROC_FS */
-+
-+ dev_boot_phase = 0;
-+
-+ open_softirq(NET_TX_SOFTIRQ, net_tx_action, NULL);
-+ open_softirq(NET_RX_SOFTIRQ, net_rx_action, NULL);
-+
-+ dst_init();
-+ dev_mcast_init();
-+
-+#ifdef CONFIG_NET_SCHED
-+ pktsched_init();
-+#endif
-+ /*
-+ * Initialise network devices
-+ */
-+
-+ net_device_init();
-+
-+ return 0;
-+}
-+
-+#ifdef CONFIG_HOTPLUG
-+
-+/* Notify userspace when a netdevice event occurs,
-+ * by running '/sbin/hotplug net' with certain
-+ * environment variables set.
-+ */
-+
-+static int net_run_sbin_hotplug(struct net_device *dev, char *action)
-+{
-+ char *argv[3], *envp[5], ifname[12 + IFNAMSIZ], action_str[32];
-+ int i;
-+
-+ sprintf(ifname, "INTERFACE=%s", dev->name);
-+ sprintf(action_str, "ACTION=%s", action);
-+
-+ i = 0;
-+ argv[i++] = hotplug_path;
-+ argv[i++] = "net";
-+ argv[i] = 0;
-+
-+ i = 0;
-+ /* minimal command environment */
-+ envp [i++] = "HOME=/";
-+ envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
-+ envp [i++] = ifname;
-+ envp [i++] = action_str;
-+ envp [i] = 0;
-+
-+ return call_usermodehelper(argv [0], argv, envp);
-+}
-+#endif
-diff --unified --recursive --new-file linux-2.4.30/net/netsyms.c linux-2.4.30-1-686-smp-ring3/net/netsyms.c
---- linux-2.4.30/net/netsyms.c 2005-04-04 03:42:20.000000000 +0200
-+++ linux-2.4.30-1-686-smp-ring3/net/netsyms.c 2005-10-22 23:08:28.016050500 +0200
-@@ -628,3 +628,18 @@
- #endif /* CONFIG_NET_RADIO || CONFIG_NET_PCMCIA_RADIO */
-
- #endif /* CONFIG_NET */
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+#include <linux/version.h>
-+
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-+#include <linux/ring.h>
-+
-+EXPORT_SYMBOL(get_skb_ring_handler);
-+EXPORT_SYMBOL(set_skb_ring_handler);
-+EXPORT_SYMBOL(do_skb_ring_handler);
-+EXPORT_SYMBOL(get_buffer_ring_handler);
-+EXPORT_SYMBOL(set_buffer_ring_handler);
-+EXPORT_SYMBOL(do_buffer_ring_handler);
-+#endif
-+
-+#endif
-diff --unified --recursive --new-file linux-2.4.30/net/ring/Config.in linux-2.4.30-1-686-smp-ring3/net/ring/Config.in
---- linux-2.4.30/net/ring/Config.in 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/net/ring/Config.in 2005-10-22 23:08:28.048052500 +0200
-@@ -0,0 +1,4 @@
-+#
-+# PF_RING
-+#
-+tristate ' PF_RING (EXPERIMENTAL)' CONFIG_RING
-diff --unified --recursive --new-file linux-2.4.30/net/ring/Makefile linux-2.4.30-1-686-smp-ring3/net/ring/Makefile
---- linux-2.4.30/net/ring/Makefile 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/net/ring/Makefile 2005-10-22 23:08:27.420013250 +0200
-@@ -0,0 +1,16 @@
-+#
-+# Makefile for the ring driver.
-+#
-+
-+O_TARGET := ring.o
-+
-+export-objs := ring_packet.o
-+
-+obj-y := ring_packet.o
-+
-+ifeq ($(CONFIG_RING),m)
-+ obj-m += $(O_TARGET)
-+endif
-+
-+include $(TOPDIR)/Rules.make
-+
-diff --unified --recursive --new-file linux-2.4.30/net/ring/ring_packet.c linux-2.4.30-1-686-smp-ring3/net/ring/ring_packet.c
---- linux-2.4.30/net/ring/ring_packet.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30-1-686-smp-ring3/net/ring/ring_packet.c 2005-10-22 23:08:27.440014500 +0200
-@@ -0,0 +1,1623 @@
-+/*
-+ *
-+ * (C) 2004-05 - Luca Deri <deri@ntop.org>
-+ *
-+ * This code includes patches courtesy of
-+ * - Jeff Randall <jrandall@nexvu.com>
-+ * - Helmut Manck <helmut.manck@secunet.com>
-+ * - Brad Doctor <bdoctor@ps-ax.com>
-+ *
-+ */
-+
-+/* FIX: add an entry inside the /proc filesystem */
-+
-+#include <linux/version.h>
-+#include <linux/config.h>
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <linux/socket.h>
-+#include <linux/skbuff.h>
-+#include <linux/rtnetlink.h>
-+#include <linux/in.h>
-+#include <linux/in6.h>
-+#include <linux/init.h>
-+#include <linux/filter.h>
-+#include <linux/ring.h>
-+#include <linux/ip.h>
-+#include <linux/tcp.h>
-+#include <linux/udp.h>
-+#include <linux/list.h>
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#include <net/xfrm.h>
-+#else
-+#include <linux/poll.h>
-+#endif
-+#include <net/sock.h>
-+#include <asm/io.h> /* needed for virt_to_phys() */
-+
-+/* #define RING_DEBUG */
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11))
-+static inline int remap_page_range(struct vm_area_struct *vma,
-+ unsigned long uvaddr,
-+ unsigned long paddr,
-+ unsigned long size,
-+ pgprot_t prot) {
-+ return(remap_pfn_range(vma, uvaddr, paddr >> PAGE_SHIFT,
-+ size, prot));
-+}
-+#endif
-+
-+/* ************************************************* */
-+
-+#define CLUSTER_LEN 8
-+
-+struct ring_cluster {
-+ u_short cluster_id; /* 0 = no cluster */
-+ u_short num_cluster_elements;
-+ enum cluster_type hashing_mode;
-+ u_short hashing_id;
-+ struct sock *sk[CLUSTER_LEN];
-+ struct ring_cluster *next; /* NULL = last element of the cluster */
-+};
-+
-+/* ************************************************* */
-+
-+struct ring_element {
-+ struct list_head list;
-+ struct sock *sk;
-+};
-+
-+/* ************************************************* */
-+
-+struct ring_opt {
-+ struct net_device *ring_netdev;
-+
-+ /* Cluster */
-+ u_short cluster_id; /* 0 = no cluster */
-+
-+ /* Reflector */
-+ struct net_device *reflector_dev;
-+
-+ /* Packet buffers */
-+ unsigned long order;
-+
-+ /* Ring Slots */
-+ unsigned long ring_memory;
-+ FlowSlotInfo *slots_info; /* Basically it points to ring_memory */
-+ char *ring_slots; /* Basically it points to ring_memory
-+ +sizeof(FlowSlotInfo) */
-+
-+ /* Packet Sampling */
-+ u_int pktToSample, sample_rate;
-+
-+ /* BPF Filter */
-+ struct sk_filter *bpfFilter;
-+
-+ /* Locks */
-+ atomic_t num_ring_slots_waiters;
-+ wait_queue_head_t ring_slots_waitqueue;
-+ rwlock_t ring_index_lock;
-+
-+ /* Indexes (Internal) */
-+ u_int insert_page_id, insert_slot_id;
-+};
-+
-+/* ************************************************* */
-+
-+/* List of all ring sockets. */
-+static struct list_head ring_table;
-+
-+/* List of all clusters */
-+static struct ring_cluster *ring_cluster_list;
-+
-+static rwlock_t ring_mgmt_lock = RW_LOCK_UNLOCKED;
-+
-+/* ********************************** */
-+
-+/* Forward */
-+static struct proto_ops ring_ops;
-+
-+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11))
-+static struct proto ring_proto;
-+#endif
-+
-+static int skb_ring_handler(struct sk_buff *skb, u_char recv_packet,
-+ u_char real_skb);
-+static int buffer_ring_handler(struct net_device *dev, char *data, int len);
-+static int remove_from_cluster(struct sock *sock, struct ring_opt *pfr);
-+
-+/* Extern */
-+
-+/* ********************************** */
-+
-+/* Defaults */
-+static u_int bucket_len = 128, num_slots = 4096, sample_rate = 1,
-+ transparent_mode = 0, enable_tx_capture = 0;
-+
-+MODULE_PARM(bucket_len, "i");
-+MODULE_PARM_DESC(bucket_len, "Number of ring buckets");
-+MODULE_PARM(num_slots, "i");
-+MODULE_PARM_DESC(num_slots, "Number of ring slots");
-+MODULE_PARM(sample_rate, "i");
-+MODULE_PARM_DESC(sample_rate, "Ring packet sample rate");
-+MODULE_PARM(transparent_mode, "i");
-+MODULE_PARM_DESC(transparent_mode,
-+ "Set to 1 to set transparent mode "
-+ "(slower but backwards compatible)");
-+MODULE_PARM(enable_tx_capture, "i");
-+MODULE_PARM_DESC(enable_tx_capture, "Set to 1 to capture outgoing packets");
-+
-+/* ********************************** */
-+
-+#define MIN_QUEUED_PKTS 64
-+#define MAX_QUEUE_LOOPS 64
-+
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#define ring_sk_datatype(__sk) ((struct ring_opt *)__sk)
-+#define ring_sk(__sk) ((__sk)->sk_protinfo)
-+#else
-+#define ring_sk_datatype(a) (a)
-+#define ring_sk(__sk) ((__sk)->protinfo.pf_ring)
-+#endif
-+
-+#define _rdtsc() ({ uint64_t x; asm volatile("rdtsc" : "=A" (x)); x; })
-+
-+/*
-+ int dev_queue_xmit(struct sk_buff *skb)
-+ skb->dev;
-+ struct net_device *dev_get_by_name(const char *name)
-+*/
-+
-+/* ********************************** */
-+
-+static void ring_sock_destruct(struct sock *sk) {
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ skb_queue_purge(&sk->sk_receive_queue);
-+
-+ if (!sock_flag(sk, SOCK_DEAD)) {
-+#if defined(RING_DEBUG)
-+ printk("Attempt to release alive ring socket: %p\n", sk);
-+#endif
-+ return;
-+ }
-+
-+ BUG_TRAP(!atomic_read(&sk->sk_rmem_alloc));
-+ BUG_TRAP(!atomic_read(&sk->sk_wmem_alloc));
-+#else
-+
-+ BUG_TRAP(atomic_read(&sk->rmem_alloc)==0);
-+ BUG_TRAP(atomic_read(&sk->wmem_alloc)==0);
-+
-+ if (!sk->dead) {
-+#if defined(RING_DEBUG)
-+ printk("Attempt to release alive ring socket: %p\n", sk);
-+#endif
-+ return;
-+ }
-+#endif
-+
-+ kfree(ring_sk(sk));
-+
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-+ MOD_DEC_USE_COUNT;
-+#endif
-+}
-+
-+/* ********************************** */
-+/*
-+ * ring_insert()
-+ *
-+ * store the sk in a new element and add it
-+ * to the head of the list.
-+ */
-+static inline void ring_insert(struct sock *sk) {
-+ struct ring_element *next;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_insert()\n");
-+#endif
-+
-+ next = kmalloc(sizeof(struct ring_element), GFP_ATOMIC);
-+ if(next != NULL) {
-+ next->sk = sk;
-+ write_lock_irq(&ring_mgmt_lock);
-+ list_add(&next->list, &ring_table);
-+ write_unlock_irq(&ring_mgmt_lock);
-+ } else {
-+ if (net_ratelimit())
-+ printk("RING: could not kmalloc slot!!\n");
-+ }
-+}
-+
-+/* ********************************** */
-+/*
-+ * ring_remove()
-+ *
-+ * For each of the elements in the list:
-+ * - check if this is the element we want to delete
-+ * - if it is, remove it from the list, and free it.
-+ *
-+ * stop when we find the one we're looking for (break),
-+ * or when we reach the end of the list.
-+ */
-+static inline void ring_remove(struct sock *sk) {
-+ struct list_head *ptr;
-+ struct ring_element *entry;
-+
-+
-+ for(ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) {
-+ entry = list_entry(ptr, struct ring_element, list);
-+
-+ if(entry->sk == sk) {
-+ write_lock_irq(&ring_mgmt_lock);
-+ list_del(ptr);
-+ kfree(ptr);
-+ write_unlock_irq(&ring_mgmt_lock);
-+ break;
-+ }
-+ }
-+
-+}
-+
-+/* ********************************** */
-+
-+static u_int32_t num_queued_pkts(struct ring_opt *pfr) {
-+
-+ if(pfr->ring_slots != NULL) {
-+
-+ u_int32_t tot_insert = pfr->slots_info->insert_idx,
-+#if defined(RING_DEBUG)
-+ tot_read = pfr->slots_info->tot_read, tot_pkts;
-+#else
-+ tot_read = pfr->slots_info->tot_read;
-+#endif
-+
-+ if(tot_insert >= tot_read) {
-+#if defined(RING_DEBUG)
-+ tot_pkts = tot_insert-tot_read;
-+#endif
-+ return(tot_insert-tot_read);
-+ } else {
-+#if defined(RING_DEBUG)
-+ tot_pkts = ((u_int32_t)-1)+tot_insert-tot_read;
-+#endif
-+ return(((u_int32_t)-1)+tot_insert-tot_read);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ printk("-> num_queued_pkts=%d [tot_insert=%d][tot_read=%d]\n",
-+ tot_pkts, tot_insert, tot_read);
-+#endif
-+
-+ } else
-+ return(0);
-+}
-+
-+/* ********************************** */
-+
-+static inline FlowSlot* get_insert_slot(struct ring_opt *pfr) {
-+#if defined(RING_DEBUG)
-+ printk("get_insert_slot(%d)\n", pfr->slots_info->insert_idx);
-+#endif
-+
-+ if(pfr->ring_slots != NULL) {
-+ FlowSlot *slot = (FlowSlot*)&(pfr->ring_slots[pfr->slots_info->insert_idx
-+ *pfr->slots_info->slot_len]);
-+ return(slot);
-+ } else
-+ return(NULL);
-+}
-+
-+/* ********************************** */
-+
-+static inline FlowSlot* get_remove_slot(struct ring_opt *pfr) {
-+#if defined(RING_DEBUG)
-+ printk("get_remove_slot(%d)\n", pfr->slots_info->remove_idx);
-+#endif
-+
-+ if(pfr->ring_slots != NULL)
-+ return((FlowSlot*)&(pfr->ring_slots[pfr->slots_info->remove_idx*
-+ pfr->slots_info->slot_len]));
-+ else
-+ return(NULL);
-+}
-+
-+/* ********************************** */
-+
-+static void add_skb_to_ring(struct sk_buff *skb,
-+ struct ring_opt *pfr,
-+ u_char recv_packet,
-+ u_char real_skb /* 1=skb 0=faked skb */) {
-+ FlowSlot *theSlot;
-+ int idx, displ;
-+
-+ if(recv_packet) {
-+ /* Hack for identifying a packet received by the e1000 */
-+ if(real_skb) {
-+ displ = SKB_DISPLACEMENT;
-+ } else
-+ displ = 0; /* Received by the e1000 wrapper */
-+ } else
-+ displ = 0;
-+
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->tot_pkts++;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+ /* BPF Filtering (from af_packet.c) */
-+ if(pfr->bpfFilter != NULL) {
-+ unsigned res = 1, len;
-+
-+ len = skb->len-skb->data_len;
-+
-+ write_lock(&pfr->ring_index_lock);
-+ skb->data -= displ;
-+ res = sk_run_filter(skb, pfr->bpfFilter->insns, pfr->bpfFilter->len);
-+ skb->data += displ;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+ if(res == 0) {
-+ /* Filter failed */
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb): Filter failed [len=%d][tot=%llu]"
-+ "[insertIdx=%d][pkt_type=%d][cloned=%d]\n",
-+ (int)skb->len, pfr->slots_info->tot_pkts,
-+ pfr->slots_info->insert_idx,
-+ skb->pkt_type, skb->cloned);
-+#endif
-+
-+ return;
-+ }
-+ }
-+
-+ /* ************************** */
-+
-+ if(pfr->sample_rate > 1) {
-+ if(pfr->pktToSample == 0) {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->pktToSample = pfr->sample_rate;
-+ write_unlock(&pfr->ring_index_lock);
-+ } else {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->pktToSample--;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb): sampled packet [len=%d]"
-+ "[tot=%llu][insertIdx=%d][pkt_type=%d][cloned=%d]\n",
-+ (int)skb->len, pfr->slots_info->tot_pkts,
-+ pfr->slots_info->insert_idx,
-+ skb->pkt_type, skb->cloned);
-+#endif
-+ return;
-+ }
-+ }
-+
-+ /* ************************************* */
-+
-+ if((pfr->reflector_dev != NULL)
-+ && (!netif_queue_stopped(pfr->reflector_dev))) {
-+ int cpu = smp_processor_id();
-+
-+ /* increase reference counter so that this skb is not freed */
-+ atomic_inc(&skb->users);
-+
-+ skb->data -= displ;
-+
-+ /* send it */
-+ if (pfr->reflector_dev->xmit_lock_owner != cpu) {
-+ spin_lock_bh(&pfr->reflector_dev->xmit_lock);
-+ pfr->reflector_dev->xmit_lock_owner = cpu;
-+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock);
-+
-+ if (pfr->reflector_dev->hard_start_xmit(skb,
-+ pfr->reflector_dev) == 0) {
-+ spin_lock_bh(&pfr->reflector_dev->xmit_lock);
-+ pfr->reflector_dev->xmit_lock_owner = -1;
-+ skb->data += displ;
-+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock);
-+#if defined(RING_DEBUG)
-+ printk("++ hard_start_xmit succeeded\n");
-+#endif
-+ return; /* OK */
-+ }
-+
-+ spin_lock_bh(&pfr->reflector_dev->xmit_lock);
-+ pfr->reflector_dev->xmit_lock_owner = -1;
-+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ printk("++ hard_start_xmit failed\n");
-+#endif
-+ skb->data += displ;
-+ return; /* -ENETDOWN */
-+ }
-+
-+ /* ************************************* */
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb) [len=%d][tot=%llu][insertIdx=%d]"
-+ "[pkt_type=%d][cloned=%d]\n",
-+ (int)skb->len, pfr->slots_info->tot_pkts,
-+ pfr->slots_info->insert_idx,
-+ skb->pkt_type, skb->cloned);
-+#endif
-+
-+ idx = pfr->slots_info->insert_idx;
-+ theSlot = get_insert_slot(pfr);
-+
-+ if((theSlot != NULL) && (theSlot->slot_state == 0)) {
-+ struct pcap_pkthdr *hdr;
-+ unsigned int bucketSpace;
-+ char *bucket;
-+
-+ /* Update Index */
-+ idx++;
-+
-+ if(idx == pfr->slots_info->tot_slots) {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->insert_idx = 0;
-+ write_unlock(&pfr->ring_index_lock);
-+ } else {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->insert_idx = idx;
-+ write_unlock(&pfr->ring_index_lock);
-+ }
-+
-+ bucketSpace = pfr->slots_info->slot_len
-+#ifdef RING_MAGIC
-+ - sizeof(u_char)
-+#endif
-+ - sizeof(u_char) /* flowSlot.slot_state */
-+ - sizeof(struct pcap_pkthdr)
-+ - 1 /* 10 */ /* safe boundary */;
-+
-+ bucket = &theSlot->bucket;
-+ hdr = (struct pcap_pkthdr*)bucket;
-+
-+ if(skb->stamp.tv_sec == 0) do_gettimeofday(&skb->stamp);
-+
-+ hdr->ts.tv_sec = skb->stamp.tv_sec, hdr->ts.tv_usec = skb->stamp.tv_usec;
-+ hdr->caplen = skb->len+displ;
-+
-+ if(hdr->caplen > bucketSpace)
-+ hdr->caplen = bucketSpace;
-+
-+ hdr->len = skb->len+displ;
-+ memcpy(&bucket[sizeof(struct pcap_pkthdr)],
-+ skb->data-displ, hdr->caplen);
-+
-+#if defined(RING_DEBUG)
-+ {
-+ static unsigned int lastLoss = 0;
-+
-+ if(pfr->slots_info->tot_lost
-+ && (lastLoss != pfr->slots_info->tot_lost)) {
-+ printk("add_skb_to_ring(%d): [bucketSpace=%d]"
-+ "[hdr.caplen=%d][skb->len=%d]"
-+ "[pcap_pkthdr=%d][removeIdx=%d]"
-+ "[loss=%lu][page=%u][slot=%u]\n",
-+ idx-1, bucketSpace, hdr->caplen, skb->len,
-+ sizeof(struct pcap_pkthdr),
-+ pfr->slots_info->remove_idx,
-+ (long unsigned int)pfr->slots_info->tot_lost,
-+ pfr->insert_page_id, pfr->insert_slot_id);
-+
-+ lastLoss = pfr->slots_info->tot_lost;
-+ }
-+ }
-+#endif
-+
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->tot_insert++;
-+ theSlot->slot_state = 1;
-+ write_unlock(&pfr->ring_index_lock);
-+ } else {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->tot_lost++;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb): packet lost [loss=%lu]"
-+ "[removeIdx=%u][insertIdx=%u]\n",
-+ (long unsigned int)pfr->slots_info->tot_lost,
-+ pfr->slots_info->remove_idx, pfr->slots_info->insert_idx);
-+#endif
-+ }
-+
-+ /* wakeup in case of poll() */
-+ if(waitqueue_active(&pfr->ring_slots_waitqueue))
-+ wake_up_interruptible(&pfr->ring_slots_waitqueue);
-+}
-+
-+/* ********************************** */
-+
-+static u_int hash_skb(struct ring_cluster *cluster_ptr,
-+ struct sk_buff *skb, u_char recv_packet) {
-+ u_int idx;
-+ int displ;
-+ struct iphdr *ip;
-+
-+ if(cluster_ptr->hashing_mode == cluster_round_robin) {
-+ idx = cluster_ptr->hashing_id++;
-+ } else {
-+ /* Per-flow clustering */
-+ if(skb->len > sizeof(struct iphdr)+sizeof(struct tcphdr)) {
-+ if(recv_packet)
-+ displ = 0;
-+ else
-+ displ = SKB_DISPLACEMENT;
-+
-+ /*
-+ skb->data+displ
-+
-+ Always points to to the IP part of the packet
-+ */
-+
-+ ip = (struct iphdr*)(skb->data+displ);
-+
-+ idx = ip->saddr+ip->daddr+ip->protocol;
-+
-+ if(ip->protocol == IPPROTO_TCP) {
-+ struct tcphdr *tcp = (struct tcphdr*)(skb->data+displ
-+ +sizeof(struct iphdr));
-+ idx += tcp->source+tcp->dest;
-+ } else if(ip->protocol == IPPROTO_UDP) {
-+ struct udphdr *udp = (struct udphdr*)(skb->data+displ
-+ +sizeof(struct iphdr));
-+ idx += udp->source+udp->dest;
-+ }
-+ } else
-+ idx = skb->len;
-+ }
-+
-+ return(idx % cluster_ptr->num_cluster_elements);
-+}
-+
-+/* ********************************** */
-+
-+static int skb_ring_handler(struct sk_buff *skb,
-+ u_char recv_packet,
-+ u_char real_skb /* 1=skb 0=faked skb */) {
-+ struct sock *skElement;
-+ int rc = 0;
-+ struct list_head *ptr;
-+ struct ring_cluster *cluster_ptr;
-+
-+#ifdef PROFILING
-+ uint64_t rdt = _rdtsc(), rdt1, rdt2;
-+#endif
-+
-+ if((!skb) /* Invalid skb */
-+ || ((!enable_tx_capture) && (!recv_packet))) {
-+ /*
-+ An outgoing packet is about to be sent out
-+ but we decided not to handle transmitted
-+ packets.
-+ */
-+ return(0);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ if(0) {
-+ printk("skb_ring_handler() [len=%d][dev=%s]\n", skb->len,
-+ skb->dev->name == NULL ? "<NULL>" : skb->dev->name);
-+ }
-+#endif
-+
-+#ifdef PROFILING
-+ rdt1 = _rdtsc();
-+#endif
-+
-+ /* [1] Check unclustered sockets */
-+ for (ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) {
-+ struct ring_opt *pfr;
-+ struct ring_element *entry;
-+
-+ entry = list_entry(ptr, struct ring_element, list);
-+
-+ read_lock(&ring_mgmt_lock);
-+ skElement = entry->sk;
-+ pfr = ring_sk(skElement);
-+ read_unlock(&ring_mgmt_lock);
-+
-+ if((pfr != NULL)
-+ && (pfr->cluster_id == 0 /* No cluster */)
-+ && (pfr->ring_slots != NULL)
-+ && (pfr->ring_netdev == skb->dev)) {
-+ /* We've found the ring where the packet can be stored */
-+ read_lock(&ring_mgmt_lock);
-+ add_skb_to_ring(skb, pfr, recv_packet, real_skb);
-+ read_unlock(&ring_mgmt_lock);
-+
-+ rc = 1; /* Ring found: we've done our job */
-+ }
-+ }
-+
-+ /* [2] Check socket clusters */
-+ cluster_ptr = ring_cluster_list;
-+
-+ while(cluster_ptr != NULL) {
-+ struct ring_opt *pfr;
-+
-+ if(cluster_ptr->num_cluster_elements > 0) {
-+ u_int skb_hash = hash_skb(cluster_ptr, skb, recv_packet);
-+
-+ read_lock(&ring_mgmt_lock);
-+ skElement = cluster_ptr->sk[skb_hash];
-+ read_unlock(&ring_mgmt_lock);
-+
-+ if(skElement != NULL) {
-+ pfr = ring_sk(skElement);
-+
-+ if((pfr != NULL)
-+ && (pfr->ring_slots != NULL)
-+ && (pfr->ring_netdev == skb->dev)) {
-+ /* We've found the ring where the packet can be stored */
-+ read_lock(&ring_mgmt_lock);
-+ add_skb_to_ring(skb, pfr, recv_packet, real_skb);
-+ read_unlock(&ring_mgmt_lock);
-+
-+ rc = 1; /* Ring found: we've done our job */
-+ }
-+ }
-+ }
-+
-+ cluster_ptr = cluster_ptr->next;
-+ }
-+
-+#ifdef PROFILING
-+ rdt1 = _rdtsc()-rdt1;
-+#endif
-+
-+#ifdef PROFILING
-+ rdt2 = _rdtsc();
-+#endif
-+
-+ if(transparent_mode) rc = 0;
-+
-+ if((rc != 0) && real_skb)
-+ dev_kfree_skb(skb); /* Free the skb */
-+
-+#ifdef PROFILING
-+ rdt2 = _rdtsc()-rdt2;
-+ rdt = _rdtsc()-rdt;
-+
-+#if defined(RING_DEBUG)
-+ printk("# cycles: %d [lock costed %d %d%%][free costed %d %d%%]\n",
-+ (int)rdt, rdt-rdt1,
-+ (int)((float)((rdt-rdt1)*100)/(float)rdt),
-+ rdt2,
-+ (int)((float)(rdt2*100)/(float)rdt));
-+#endif
-+#endif
-+
-+ return(rc); /* 0 = packet not handled */
-+}
-+
-+/* ********************************** */
-+
-+struct sk_buff skb;
-+
-+static int buffer_ring_handler(struct net_device *dev,
-+ char *data, int len) {
-+
-+#if defined(RING_DEBUG)
-+ printk("buffer_ring_handler: [dev=%s][len=%d]\n",
-+ dev->name == NULL ? "<NULL>" : dev->name, len);
-+#endif
-+
-+ skb.dev = dev, skb.len = len, skb.data = data,
-+ skb.data_len = len, skb.stamp.tv_sec = 0; /* Calculate the time */
-+
-+ skb_ring_handler(&skb, 1, 0 /* fake skb */);
-+
-+ return(0);
-+}
-+
-+/* ********************************** */
-+
-+static int ring_create(struct socket *sock, int protocol) {
-+ struct sock *sk;
-+ struct ring_opt *pfr;
-+ int err;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_create()\n");
-+#endif
-+
-+ /* Are you root, superuser or so ? */
-+ if(!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+
-+ if(sock->type != SOCK_RAW)
-+ return -ESOCKTNOSUPPORT;
-+
-+ if(protocol != htons(ETH_P_ALL))
-+ return -EPROTONOSUPPORT;
-+
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-+ MOD_INC_USE_COUNT;
-+#endif
-+
-+ err = -ENOMEM;
-+
-+ // BD: -- broke this out to keep it more simple and clear as to what the
-+ // options are.
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11))
-+ sk = sk_alloc(PF_RING, GFP_KERNEL, 1, NULL);
-+#endif
-+#endif
-+
-+ // BD: API changed in 2.6.12, ref:
-+ // http://svn.clkao.org/svnweb/linux/revision/?rev=28201
-+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11))
-+ sk = sk_alloc(PF_RING, GFP_ATOMIC, &ring_proto, 1);
-+#endif
-+
-+ if (sk == NULL)
-+ goto out;
-+
-+ sock->ops = &ring_ops;
-+ sock_init_data(sock, sk);
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11))
-+ sk_set_owner(sk, THIS_MODULE);
-+#endif
-+#endif
-+
-+ err = -ENOMEM;
-+ ring_sk(sk) = ring_sk_datatype(kmalloc(sizeof(*pfr), GFP_KERNEL));
-+
-+ if (!(pfr = ring_sk(sk))) {
-+ sk_free(sk);
-+ goto out;
-+ }
-+ memset(pfr, 0, sizeof(*pfr));
-+ init_waitqueue_head(&pfr->ring_slots_waitqueue);
-+ pfr->ring_index_lock = RW_LOCK_UNLOCKED;
-+ atomic_set(&pfr->num_ring_slots_waiters, 0);
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ sk->sk_family = PF_RING;
-+ sk->sk_destruct = ring_sock_destruct;
-+#else
-+ sk->family = PF_RING;
-+ sk->destruct = ring_sock_destruct;
-+ sk->num = protocol;
-+#endif
-+
-+ ring_insert(sk);
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_create() - created\n");
-+#endif
-+
-+ return(0);
-+ out:
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-+ MOD_DEC_USE_COUNT;
-+#endif
-+ return err;
-+}
-+
-+/* *********************************************** */
-+
-+static int ring_release(struct socket *sock)
-+{
-+ struct sock *sk = sock->sk;
-+ struct ring_opt *pfr = ring_sk(sk);
-+
-+ if(!sk)
-+ return 0;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: called ring_release\n");
-+#endif
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_release entered\n");
-+#endif
-+
-+ ring_remove(sk);
-+
-+ sock_orphan(sk);
-+ sock->sk = NULL;
-+
-+ /* Free the ring buffer */
-+ if(pfr->ring_memory) {
-+ struct page *page, *page_end;
-+
-+ page_end = virt_to_page(pfr->ring_memory + (PAGE_SIZE << pfr->order) - 1);
-+ for(page = virt_to_page(pfr->ring_memory); page <= page_end; page++)
-+ ClearPageReserved(page);
-+
-+ free_pages(pfr->ring_memory, pfr->order);
-+ }
-+
-+ kfree(pfr);
-+ ring_sk(sk) = NULL;
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ skb_queue_purge(&sk->sk_write_queue);
-+#endif
-+ sock_put(sk);
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_release leaving\n");
-+#endif
-+
-+ return 0;
-+}
-+
-+/* ********************************** */
-+/*
-+ * We create a ring for this socket and bind it to the specified device
-+ */
-+static int packet_ring_bind(struct sock *sk, struct net_device *dev)
-+{
-+ u_int the_slot_len;
-+ u_int32_t tot_mem;
-+ struct ring_opt *pfr = ring_sk(sk);
-+ struct page *page, *page_end;
-+
-+ if(!dev) return(-1);
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: packet_ring_bind(%s) called\n", dev->name);
-+#endif
-+
-+ /* **********************************************
-+
-+ *************************************
-+ * *
-+ * FlowSlotInfo *
-+ * *
-+ ************************************* <-+
-+ * FlowSlot * |
-+ ************************************* |
-+ * FlowSlot * |
-+ ************************************* +- num_slots
-+ * FlowSlot * |
-+ ************************************* |
-+ * FlowSlot * |
-+ ************************************* <-+
-+
-+ ********************************************** */
-+
-+ the_slot_len = sizeof(u_char) /* flowSlot.slot_state */
-+ + sizeof(u_short) /* flowSlot.slot_len */
-+ + bucket_len /* flowSlot.bucket */;
-+
-+ tot_mem = sizeof(FlowSlotInfo) + num_slots*the_slot_len;
-+
-+ /*
-+ Calculate the value of the order parameter used later.
-+ See http://www.linuxjournal.com/article.php?sid=1133
-+ */
-+ for(pfr->order = 0;(PAGE_SIZE << pfr->order) < tot_mem; pfr->order++) ;
-+
-+ /*
-+ We now try to allocate the memory as required. If we fail
-+ we try to allocate a smaller amount or memory (hence a
-+ smaller ring).
-+ */
-+ while((pfr->ring_memory = __get_free_pages(GFP_ATOMIC, pfr->order)) == 0)
-+ if(pfr->order-- == 0)
-+ break;
-+
-+ if(pfr->order == 0) {
-+#if defined(RING_DEBUG)
-+ printk("ERROR: not enough memory\n");
-+#endif
-+ return(-1);
-+ } else {
-+#if defined(RING_DEBUG)
-+ printk("RING: succesfully allocated %lu KB [tot_mem=%d][order=%ld]\n",
-+ PAGE_SIZE >> (10 - pfr->order), tot_mem, pfr->order);
-+#endif
-+ }
-+
-+ tot_mem = PAGE_SIZE << pfr->order;
-+ memset((char*)pfr->ring_memory, 0, tot_mem);
-+
-+ /* Now we need to reserve the pages */
-+ page_end = virt_to_page(pfr->ring_memory + (PAGE_SIZE << pfr->order) - 1);
-+ for(page = virt_to_page(pfr->ring_memory); page <= page_end; page++)
-+ SetPageReserved(page);
-+
-+ pfr->slots_info = (FlowSlotInfo*)pfr->ring_memory;
-+ pfr->ring_slots = (char*)(pfr->ring_memory+sizeof(FlowSlotInfo));
-+
-+ pfr->slots_info->version = RING_FLOWSLOT_VERSION;
-+ pfr->slots_info->slot_len = the_slot_len;
-+ pfr->slots_info->tot_slots = (tot_mem-sizeof(FlowSlotInfo))/the_slot_len;
-+ pfr->slots_info->tot_mem = tot_mem;
-+ pfr->slots_info->sample_rate = sample_rate;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: allocated %d slots [slot_len=%d][tot_mem=%u]\n",
-+ pfr->slots_info->tot_slots, pfr->slots_info->slot_len,
-+ pfr->slots_info->tot_mem);
-+#endif
-+
-+#ifdef RING_MAGIC
-+ {
-+ int i;
-+
-+ for(i=0; i<pfr->slots_info->tot_slots; i++) {
-+ unsigned long idx = i*pfr->slots_info->slot_len;
-+ FlowSlot *slot = (FlowSlot*)&pfr->ring_slots[idx];
-+ slot->magic = RING_MAGIC_VALUE; slot->slot_state = 0;
-+ }
-+ }
-+#endif
-+
-+ pfr->insert_page_id = 1, pfr->insert_slot_id = 0;
-+
-+ /*
-+ IMPORTANT
-+ Leave this statement here as last one. In fact when
-+ the ring_netdev != NULL the socket is ready to be used.
-+ */
-+ pfr->ring_netdev = dev;
-+
-+ return(0);
-+}
-+
-+/* ************************************* */
-+
-+/* Bind to a device */
-+static int ring_bind(struct socket *sock,
-+ struct sockaddr *sa, int addr_len)
-+{
-+ struct sock *sk=sock->sk;
-+ struct net_device *dev = NULL;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_bind() called\n");
-+#endif
-+
-+ /*
-+ * Check legality
-+ */
-+ if (addr_len != sizeof(struct sockaddr))
-+ return -EINVAL;
-+ if (sa->sa_family != PF_RING)
-+ return -EINVAL;
-+
-+ /* Safety check: add trailing zero if missing */
-+ sa->sa_data[sizeof(sa->sa_data)-1] = '\0';
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: searching device %s\n", sa->sa_data);
-+#endif
-+
-+ if((dev = __dev_get_by_name(sa->sa_data)) == NULL) {
-+#if defined(RING_DEBUG)
-+ printk("RING: search failed\n");
-+#endif
-+ return(-EINVAL);
-+ } else
-+ return(packet_ring_bind(sk, dev));
-+}
-+
-+/* ************************************* */
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+
-+volatile void* virt_to_kseg(volatile void* address) {
-+ pte_t *pte;
-+ pud_t *pud;
-+ unsigned long addr = (unsigned long)address;
-+
-+ pud = pud_offset(pgd_offset_k((unsigned long) address),
-+ (unsigned long) address);
-+
-+ /*
-+ High-memory support courtesy of
-+ Brad Doctor <bdoctor@ps-ax.com>
-+ */
-+#if defined(CONFIG_X86_PAE) && (!defined(CONFIG_NOHIGHMEM))
-+ pte = pte_offset_map(pmd_offset(pud, addr), addr);
-+#else
-+ pte = pmd_offset_map(pud, addr);
-+#endif
-+
-+ return((volatile void*)pte_page(*pte));
-+}
-+
-+#else /* 2.4 */
-+
-+/* http://www.scs.ch/~frey/linux/memorymap.html */
-+volatile void *virt_to_kseg(volatile void *address)
-+{
-+ pgd_t *pgd; pmd_t *pmd; pte_t *ptep, pte;
-+ unsigned long va, ret = 0UL;
-+
-+ va=VMALLOC_VMADDR((unsigned long)address);
-+
-+ /* get the page directory. Use the kernel memory map. */
-+ pgd = pgd_offset_k(va);
-+
-+ /* check whether we found an entry */
-+ if (!pgd_none(*pgd))
-+ {
-+ /* get the page middle directory */
-+ pmd = pmd_offset(pgd, va);
-+ /* check whether we found an entry */
-+ if (!pmd_none(*pmd))
-+ {
-+ /* get a pointer to the page table entry */
-+ ptep = pte_offset(pmd, va);
-+ pte = *ptep;
-+ /* check for a valid page */
-+ if (pte_present(pte))
-+ {
-+ /* get the address the page is refering to */
-+ ret = (unsigned long)page_address(pte_page(pte));
-+ /* add the offset within the page to the page address */
-+ ret |= (va & (PAGE_SIZE -1));
-+ }
-+ }
-+ }
-+ return((volatile void *)ret);
-+}
-+#endif
-+
-+/* ************************************* */
-+
-+static int ring_mmap(struct file *file,
-+ struct socket *sock,
-+ struct vm_area_struct *vma)
-+{
-+ struct sock *sk = sock->sk;
-+ struct ring_opt *pfr = ring_sk(sk);
-+ unsigned long size, start;
-+ u_int pagesToMap;
-+ char *ptr;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() called\n");
-+#endif
-+
-+ if(pfr->ring_memory == 0) {
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() failed: mapping area to an unbound socket\n");
-+#endif
-+ return -EINVAL;
-+ }
-+
-+ size = (unsigned long)(vma->vm_end-vma->vm_start);
-+
-+ if(size % PAGE_SIZE) {
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() failed: len is not multiple of PAGE_SIZE\n");
-+#endif
-+ return(-EINVAL);
-+ }
-+
-+ /* if userspace tries to mmap beyond end of our buffer, fail */
-+ if(size > pfr->slots_info->tot_mem) {
-+#if defined(RING_DEBUG)
-+ printk("proc_mmap() failed: area too large [%ld > %d]\n", size, pfr->slots_info->tot_mem);
-+#endif
-+ return(-EINVAL);
-+ }
-+
-+ pagesToMap = size/PAGE_SIZE;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() called. %d pages to map\n", pagesToMap);
-+#endif
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: mmap [slot_len=%d][tot_slots=%d] for ring on device %s\n",
-+ pfr->slots_info->slot_len, pfr->slots_info->tot_slots,
-+ pfr->ring_netdev->name);
-+#endif
-+
-+ /* we do not want to have this area swapped out, lock it */
-+ vma->vm_flags |= VM_LOCKED;
-+ start = vma->vm_start;
-+
-+ /* Ring slots start from page 1 (page 0 is reserved for FlowSlotInfo) */
-+ ptr = (char*)(start+PAGE_SIZE);
-+
-+ if(remap_page_range(
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ vma,
-+#endif
-+ start,
-+ __pa(pfr->ring_memory),
-+ PAGE_SIZE*pagesToMap, vma->vm_page_prot)) {
-+#if defined(RING_DEBUG)
-+ printk("remap_page_range() failed\n");
-+#endif
-+ return(-EAGAIN);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ printk("proc_mmap(pagesToMap=%d): success.\n", pagesToMap);
-+#endif
-+
-+ return 0;
-+}
-+
-+/* ************************************* */
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+static int ring_recvmsg(struct kiocb *iocb, struct socket *sock,
-+ struct msghdr *msg, size_t len, int flags)
-+#else
-+ static int ring_recvmsg(struct socket *sock, struct msghdr *msg, int len,
-+ int flags, struct scm_cookie *scm)
-+#endif
-+{
-+ FlowSlot* slot;
-+ struct ring_opt *pfr = ring_sk(sock->sk);
-+ u_int32_t queued_pkts, num_loops = 0;
-+
-+#if defined(RING_DEBUG)
-+ printk("ring_recvmsg called\n");
-+#endif
-+
-+ slot = get_remove_slot(pfr);
-+
-+ while((queued_pkts = num_queued_pkts(pfr)) < MIN_QUEUED_PKTS) {
-+ wait_event_interruptible(pfr->ring_slots_waitqueue, 1);
-+
-+#if defined(RING_DEBUG)
-+ printk("-> ring_recvmsg returning %d [queued_pkts=%d][num_loops=%d]\n",
-+ slot->slot_state, queued_pkts, num_loops);
-+#endif
-+
-+ if(queued_pkts > 0) {
-+ if(num_loops++ > MAX_QUEUE_LOOPS)
-+ break;
-+ }
-+ }
-+
-+#if defined(RING_DEBUG)
-+ if(slot != NULL)
-+ printk("ring_recvmsg is returning [queued_pkts=%d][num_loops=%d]\n",
-+ queued_pkts, num_loops);
-+#endif
-+
-+ return(queued_pkts);
-+}
-+
-+/* ************************************* */
-+
-+unsigned int ring_poll(struct file * file,
-+ struct socket *sock, poll_table *wait)
-+{
-+ FlowSlot* slot;
-+ struct ring_opt *pfr = ring_sk(sock->sk);
-+
-+#if defined(RING_DEBUG)
-+ printk("poll called\n");
-+#endif
-+
-+ slot = get_remove_slot(pfr);
-+
-+ if((slot != NULL) && (slot->slot_state == 0))
-+ poll_wait(file, &pfr->ring_slots_waitqueue, wait);
-+
-+#if defined(RING_DEBUG)
-+ printk("poll returning %d\n", slot->slot_state);
-+#endif
-+
-+ if((slot != NULL) && (slot->slot_state == 1))
-+ return(POLLIN | POLLRDNORM);
-+ else
-+ return(0);
-+}
-+
-+/* ************************************* */
-+
-+int add_to_cluster_list(struct ring_cluster *el,
-+ struct sock *sock) {
-+
-+ if(el->num_cluster_elements == CLUSTER_LEN)
-+ return(-1); /* Cluster full */
-+
-+ ring_sk_datatype(ring_sk(sock))->cluster_id = el->cluster_id;
-+ el->sk[el->num_cluster_elements] = sock;
-+ el->num_cluster_elements++;
-+ return(0);
-+}
-+
-+/* ************************************* */
-+
-+int remove_from_cluster_list(struct ring_cluster *el,
-+ struct sock *sock) {
-+ int i, j;
-+
-+ for(i=0; i<CLUSTER_LEN; i++)
-+ if(el->sk[i] == sock) {
-+ el->num_cluster_elements--;
-+
-+ if(el->num_cluster_elements > 0) {
-+ /* The cluster contains other elements */
-+ for(j=i; j<CLUSTER_LEN-1; j++)
-+ el->sk[j] = el->sk[j+1];
-+
-+ el->sk[CLUSTER_LEN-1] = NULL;
-+ } else {
-+ /* Empty cluster */
-+ memset(el->sk, 0, sizeof(el->sk));
-+ }
-+
-+ return(0);
-+ }
-+
-+ return(-1); /* Not found */
-+}
-+
-+/* ************************************* */
-+
-+static int remove_from_cluster(struct sock *sock,
-+ struct ring_opt *pfr)
-+{
-+ struct ring_cluster *el;
-+
-+#if defined(RING_DEBUG)
-+ printk("--> remove_from_cluster(%d)\n", pfr->cluster_id);
-+#endif
-+
-+ if(pfr->cluster_id == 0 /* 0 = No Cluster */)
-+ return(0); /* Noting to do */
-+
-+ el = ring_cluster_list;
-+
-+ while(el != NULL) {
-+ if(el->cluster_id == pfr->cluster_id) {
-+ return(remove_from_cluster_list(el, sock));
-+ } else
-+ el = el->next;
-+ }
-+
-+ return(-EINVAL); /* Not found */
-+}
-+
-+/* ************************************* */
-+
-+static int add_to_cluster(struct sock *sock,
-+ struct ring_opt *pfr,
-+ u_short cluster_id)
-+{
-+ struct ring_cluster *el;
-+
-+#ifndef RING_DEBUG
-+ printk("--> add_to_cluster(%d)\n", cluster_id);
-+#endif
-+
-+ if(cluster_id == 0 /* 0 = No Cluster */) return(-EINVAL);
-+
-+ if(pfr->cluster_id != 0)
-+ remove_from_cluster(sock, pfr);
-+
-+ el = ring_cluster_list;
-+
-+ while(el != NULL) {
-+ if(el->cluster_id == cluster_id) {
-+ return(add_to_cluster_list(el, sock));
-+ } else
-+ el = el->next;
-+ }
-+
-+ /* There's no existing cluster. We need to create one */
-+ if((el = kmalloc(sizeof(struct ring_cluster), GFP_KERNEL)) == NULL)
-+ return(-ENOMEM);
-+
-+ el->cluster_id = cluster_id;
-+ el->num_cluster_elements = 1;
-+ el->hashing_mode = cluster_per_flow; /* Default */
-+ el->hashing_id = 0;
-+
-+ memset(el->sk, 0, sizeof(el->sk));
-+ el->sk[0] = sock;
-+ el->next = ring_cluster_list;
-+ ring_cluster_list = el;
-+ pfr->cluster_id = cluster_id;
-+
-+ return(0); /* 0 = OK */
-+}
-+
-+/* ************************************* */
-+
-+/* Code taken/inspired from core/sock.c */
-+static int ring_setsockopt(struct socket *sock,
-+ int level, int optname,
-+ char *optval, int optlen)
-+{
-+ struct ring_opt *pfr = ring_sk(sock->sk);
-+ int val, found, ret = 0;
-+ u_int cluster_id;
-+ char devName[8];
-+
-+ if((optlen<sizeof(int)) || (pfr == NULL))
-+ return(-EINVAL);
-+
-+ if (get_user(val, (int *)optval))
-+ return -EFAULT;
-+
-+ found = 1;
-+
-+ switch(optname)
-+ {
-+ case SO_ATTACH_FILTER:
-+ ret = -EINVAL;
-+ if (optlen == sizeof(struct sock_fprog)) {
-+ unsigned int fsize;
-+ struct sock_fprog fprog;
-+ struct sk_filter *filter;
-+
-+ ret = -EFAULT;
-+
-+ /*
-+ NOTE
-+
-+ Do not call copy_from_user within a held
-+ splinlock (e.g. ring_mgmt_lock) as this caused
-+ problems when certain debugging was enabled under
-+ 2.6.5 -- including hard lockups of the machine.
-+ */
-+ if(copy_from_user(&fprog, optval, sizeof(fprog)))
-+ break;
-+
-+ fsize = sizeof(struct sock_filter) * fprog.len;
-+ filter = kmalloc(fsize, GFP_KERNEL);
-+
-+ if(filter == NULL) {
-+ ret = -ENOMEM;
-+ break;
-+ }
-+
-+ if(copy_from_user(filter->insns, fprog.filter, fsize))
-+ break;
-+
-+ filter->len = fprog.len;
-+
-+ if(sk_chk_filter(filter->insns, filter->len) != 0) {
-+ /* Bad filter specified */
-+ kfree(filter);
-+ pfr->bpfFilter = NULL;
-+ break;
-+ }
-+
-+ /* get the lock, set the filter, release the lock */
-+ write_lock(&ring_mgmt_lock);
-+ pfr->bpfFilter = filter;
-+ write_unlock(&ring_mgmt_lock);
-+ }
-+ ret = 0;
-+ break;
-+
-+ case SO_DETACH_FILTER:
-+ write_lock(&ring_mgmt_lock);
-+ found = 1;
-+ if(pfr->bpfFilter != NULL) {
-+ kfree(pfr->bpfFilter);
-+ pfr->bpfFilter = NULL;
-+ write_unlock(&ring_mgmt_lock);
-+ break;
-+ }
-+ ret = -ENONET;
-+ break;
-+
-+ case SO_ADD_TO_CLUSTER:
-+ if (optlen!=sizeof(val))
-+ return -EINVAL;
-+
-+ if (copy_from_user(&cluster_id, optval, sizeof(cluster_id)))
-+ return -EFAULT;
-+
-+ write_lock(&ring_mgmt_lock);
-+ ret = add_to_cluster(sock->sk, pfr, cluster_id);
-+ write_unlock(&ring_mgmt_lock);
-+ break;
-+
-+ case SO_REMOVE_FROM_CLUSTER:
-+ write_lock(&ring_mgmt_lock);
-+ ret = remove_from_cluster(sock->sk, pfr);
-+ write_unlock(&ring_mgmt_lock);
-+ break;
-+
-+ case SO_SET_REFLECTOR:
-+ if(optlen >= (sizeof(devName)-1))
-+ return -EINVAL;
-+
-+ if(optlen > 0) {
-+ if(copy_from_user(devName, optval, optlen))
-+ return -EFAULT;
-+ }
-+
-+ devName[optlen] = '\0';
-+
-+#if defined(RING_DEBUG)
-+ printk("+++ SO_SET_REFLECTOR(%s)\n", devName);
-+#endif
-+
-+ write_lock(&ring_mgmt_lock);
-+ pfr->reflector_dev = dev_get_by_name(devName);
-+ write_unlock(&ring_mgmt_lock);
-+
-+#if defined(RING_DEBUG)
-+ if(pfr->reflector_dev != NULL)
-+ printk("SO_SET_REFLECTOR(%s): succeded\n", devName);
-+ else
-+ printk("SO_SET_REFLECTOR(%s): device unknown\n", devName);
-+#endif
-+ break;
-+
-+ default:
-+ found = 0;
-+ break;
-+ }
-+
-+ if(found)
-+ return(ret);
-+ else
-+ return(sock_setsockopt(sock, level, optname, optval, optlen));
-+}
-+
-+/* ************************************* */
-+
-+static int ring_ioctl(struct socket *sock,
-+ unsigned int cmd, unsigned long arg)
-+{
-+ switch(cmd)
-+ {
-+ case SIOCGIFFLAGS:
-+ case SIOCSIFFLAGS:
-+ case SIOCGIFCONF:
-+ case SIOCGIFMETRIC:
-+ case SIOCSIFMETRIC:
-+ case SIOCGIFMEM:
-+ case SIOCSIFMEM:
-+ case SIOCGIFMTU:
-+ case SIOCSIFMTU:
-+ case SIOCSIFLINK:
-+ case SIOCGIFHWADDR:
-+ case SIOCSIFHWADDR:
-+ case SIOCSIFMAP:
-+ case SIOCGIFMAP:
-+ case SIOCSIFSLAVE:
-+ case SIOCGIFSLAVE:
-+ case SIOCGIFINDEX:
-+ case SIOCGIFNAME:
-+ case SIOCGIFCOUNT:
-+ case SIOCSIFHWBROADCAST:
-+ return(dev_ioctl(cmd,(void *) arg));
-+
-+ default:
-+ return -EOPNOTSUPP;
-+ }
-+
-+ return 0;
-+}
-+
-+/* ************************************* */
-+
-+static struct proto_ops ring_ops = {
-+ .family = PF_RING,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ .owner = THIS_MODULE,
-+#endif
-+
-+ /* Operations that make no sense on ring sockets. */
-+ .connect = sock_no_connect,
-+ .socketpair = sock_no_socketpair,
-+ .accept = sock_no_accept,
-+ .getname = sock_no_getname,
-+ .listen = sock_no_listen,
-+ .shutdown = sock_no_shutdown,
-+ .sendpage = sock_no_sendpage,
-+ .sendmsg = sock_no_sendmsg,
-+ .getsockopt = sock_no_getsockopt,
-+
-+ /* Now the operations that really occur. */
-+ .release = ring_release,
-+ .bind = ring_bind,
-+ .mmap = ring_mmap,
-+ .poll = ring_poll,
-+ .setsockopt = ring_setsockopt,
-+ .ioctl = ring_ioctl,
-+ .recvmsg = ring_recvmsg,
-+};
-+
-+/* ************************************ */
-+
-+static struct net_proto_family ring_family_ops = {
-+ .family = PF_RING,
-+ .create = ring_create,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ .owner = THIS_MODULE,
-+#endif
-+};
-+
-+// BD: API changed in 2.6.12, ref:
-+// http://svn.clkao.org/svnweb/linux/revision/?rev=28201
-+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11))
-+static struct proto ring_proto = {
-+ .name = "PF_RING",
-+ .owner = THIS_MODULE,
-+ .obj_size = sizeof(struct sock),
-+};
-+#endif
-+
-+/* ************************************ */
-+
-+static void __exit ring_exit(void)
-+{
-+ struct list_head *ptr;
-+ struct ring_element *entry;
-+
-+ for(ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) {
-+ entry = list_entry(ptr, struct ring_element, list);
-+ kfree(entry);
-+ }
-+
-+ while(ring_cluster_list != NULL) {
-+ struct ring_cluster *next = ring_cluster_list->next;
-+ kfree(ring_cluster_list);
-+ ring_cluster_list = next;
-+ }
-+
-+ set_skb_ring_handler(NULL);
-+ set_buffer_ring_handler(NULL);
-+ sock_unregister(PF_RING);
-+
-+ printk("PF_RING shut down.\n");
-+}
-+
-+/* ************************************ */
-+
-+static int __init ring_init(void)
-+{
-+ printk("Welcome to PF_RING %s\n(C) 2004 L.Deri <deri@ntop.org>\n",
-+ RING_VERSION);
-+
-+ INIT_LIST_HEAD(&ring_table);
-+ ring_cluster_list = NULL;
-+
-+ sock_register(&ring_family_ops);
-+
-+ set_skb_ring_handler(skb_ring_handler);
-+ set_buffer_ring_handler(buffer_ring_handler);
-+
-+ if(get_buffer_ring_handler() != buffer_ring_handler) {
-+ printk("PF_RING: set_buffer_ring_handler FAILED\n");
-+
-+ set_skb_ring_handler(NULL);
-+ set_buffer_ring_handler(NULL);
-+ sock_unregister(PF_RING);
-+ return -1;
-+ } else {
-+ printk("PF_RING: bucket length %d bytes\n", bucket_len);
-+ printk("PF_RING: ring slots %d\n", num_slots);
-+ printk("PF_RING: sample rate %d [1=no sampling]\n", sample_rate);
-+ printk("PF_RING: capture TX %s\n",
-+ enable_tx_capture ? "Yes [RX+TX]" : "No [RX only]");
-+ printk("PF_RING: transparent mode %s\n",
-+ transparent_mode ? "Yes" : "No");
-+
-+ printk("PF_RING initialized correctly.\n");
-+ return 0;
-+ }
-+}
-+
-+module_init(ring_init);
-+module_exit(ring_exit);
-+MODULE_LICENSE("GPL");
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+MODULE_ALIAS_NETPROTO(PF_RING);
-+#endif
+++ /dev/null
-diff --unified --recursive --new-file linux-2.6.15-rc6/include/linux/ring.h linux-2.6.15-rc6-1-686-smp-ring3/include/linux/ring.h
---- linux-2.6.15-rc6/include/linux/ring.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.15-rc6-1-686-smp-ring3/include/linux/ring.h 2005-12-24 00:24:01.000000000 +0100
-@@ -0,0 +1,107 @@
-+/*
-+ * Definitions for packet ring
-+ *
-+ * 2004 - Luca Deri <deri@ntop.org>
-+ */
-+#ifndef __RING_H
-+#define __RING_H
-+
-+
-+#define INCLUDE_MAC_INFO
-+
-+#ifdef INCLUDE_MAC_INFO
-+#define SKB_DISPLACEMENT 14 /* Include MAC address information */
-+#else
-+#define SKB_DISPLACEMENT 0 /* Do NOT include MAC address information */
-+#endif
-+
-+#define RING_MAGIC
-+#define RING_MAGIC_VALUE 0x88
-+#define RING_FLOWSLOT_VERSION 6
-+#define RING_VERSION "3.1"
-+
-+#define SO_ADD_TO_CLUSTER 99
-+#define SO_REMOVE_FROM_CLUSTER 100
-+#define SO_SET_REFLECTOR 101
-+
-+/* *********************************** */
-+
-+#ifndef HAVE_PCAP
-+struct pcap_pkthdr {
-+ struct timeval ts; /* time stamp */
-+ u_int32_t caplen; /* length of portion present */
-+ u_int32_t len; /* length this packet (off wire) */
-+};
-+#endif
-+
-+/* *********************************** */
-+
-+enum cluster_type {
-+ cluster_per_flow = 0,
-+ cluster_round_robin
-+};
-+
-+/* *********************************** */
-+
-+#define RING_MIN_SLOT_SIZE (60+sizeof(struct pcap_pkthdr))
-+#define RING_MAX_SLOT_SIZE (1514+sizeof(struct pcap_pkthdr))
-+
-+/* *********************************** */
-+
-+typedef struct flowSlotInfo {
-+ u_int16_t version, sample_rate;
-+ u_int32_t tot_slots, slot_len, data_len, tot_mem;
-+
-+ u_int64_t tot_pkts, tot_lost;
-+ u_int64_t tot_insert, tot_read;
-+ u_int32_t insert_idx, remove_idx;
-+} FlowSlotInfo;
-+
-+/* *********************************** */
-+
-+typedef struct flowSlot {
-+#ifdef RING_MAGIC
-+ u_char magic; /* It must alwasy be zero */
-+#endif
-+ u_char slot_state; /* 0=empty, 1=full */
-+ u_char bucket; /* bucket[bucketLen] */
-+} FlowSlot;
-+
-+/* *********************************** */
-+
-+#ifdef __KERNEL__
-+
-+FlowSlotInfo* getRingPtr(void);
-+int allocateRing(char *deviceName, u_int numSlots,
-+ u_int bucketLen, u_int sampleRate);
-+unsigned int pollRing(struct file *fp, struct poll_table_struct * wait);
-+void deallocateRing(void);
-+
-+/* ************************* */
-+
-+typedef int (*handle_ring_skb)(struct sk_buff *skb,
-+ u_char recv_packet, u_char real_skb);
-+extern handle_ring_skb get_skb_ring_handler(void);
-+extern void set_skb_ring_handler(handle_ring_skb the_handler);
-+extern void do_skb_ring_handler(struct sk_buff *skb,
-+ u_char recv_packet, u_char real_skb);
-+
-+typedef int (*handle_ring_buffer)(struct net_device *dev,
-+ char *data, int len);
-+extern handle_ring_buffer get_buffer_ring_handler(void);
-+extern void set_buffer_ring_handler(handle_ring_buffer the_handler);
-+extern int do_buffer_ring_handler(struct net_device *dev,
-+ char *data, int len);
-+#endif /* __KERNEL__ */
-+
-+/* *********************************** */
-+
-+#define PF_RING 27 /* Packet Ring */
-+#define SOCK_RING PF_RING
-+
-+/* ioctl() */
-+#define SIORINGPOLL 0x8888
-+
-+/* *********************************** */
-+
-+#endif /* __RING_H */
-diff --unified --recursive --new-file linux-2.6.15-rc6/net/core/dev.c linux-2.6.15-rc6-1-686-smp-ring3/net/core/dev.c
---- linux-2.6.15-rc6/net/core/dev.c 2005-12-19 01:36:54.000000000 +0100
-+++ linux-2.6.15-rc6-1-686-smp-ring3/net/core/dev.c 2005-12-24 00:24:02.000000000 +0100
-@@ -115,6 +115,56 @@
- #endif /* CONFIG_NET_RADIO */
- #include <asm/current.h>
-
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+
-+/* #define RING_DEBUG */
-+
-+#include <linux/ring.h>
-+#include <linux/version.h>
-+
-+static handle_ring_skb ring_handler = NULL;
-+
-+handle_ring_skb get_skb_ring_handler() { return(ring_handler); }
-+
-+void set_skb_ring_handler(handle_ring_skb the_handler) {
-+ ring_handler = the_handler;
-+}
-+
-+void do_skb_ring_handler(struct sk_buff *skb,
-+ u_char recv_packet, u_char real_skb) {
-+ if(ring_handler)
-+ ring_handler(skb, recv_packet, real_skb);
-+}
-+
-+/* ******************* */
-+
-+static handle_ring_buffer buffer_ring_handler = NULL;
-+
-+handle_ring_buffer get_buffer_ring_handler() { return(buffer_ring_handler); }
-+
-+void set_buffer_ring_handler(handle_ring_buffer the_handler) {
-+ buffer_ring_handler = the_handler;
-+}
-+
-+int do_buffer_ring_handler(struct net_device *dev, char *data, int len) {
-+ if(buffer_ring_handler) {
-+ buffer_ring_handler(dev, data, len);
-+ return(1);
-+ } else
-+ return(0);
-+}
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+EXPORT_SYMBOL(get_skb_ring_handler);
-+EXPORT_SYMBOL(set_skb_ring_handler);
-+EXPORT_SYMBOL(do_skb_ring_handler);
-+
-+EXPORT_SYMBOL(get_buffer_ring_handler);
-+EXPORT_SYMBOL(set_buffer_ring_handler);
-+EXPORT_SYMBOL(do_buffer_ring_handler);
-+#endif
-+
-+#endif
- /*
- * The list of packet types we will receive (as opposed to discard)
- * and the routines to invoke.
-@@ -1296,6 +1346,10 @@
- skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_EGRESS);
- #endif
- if (q->enqueue) {
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler) ring_handler(skb, 0, 1);
-+#endif /* CONFIG_RING */
-+
- /* Grab device queue */
- spin_lock(&dev->queue_lock);
-
-@@ -1437,6 +1491,13 @@
-
- preempt_disable();
- err = netif_rx(skb);
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler && ring_handler(skb, 1, 1)) {
-+ /* The packet has been copied into a ring */
-+ return(NET_RX_SUCCESS);
-+ }
-+#endif /* CONFIG_RING */
-+
- if (local_softirq_pending())
- do_softirq();
- preempt_enable();
-@@ -1582,6 +1643,13 @@
- struct net_device *orig_dev;
- int ret = NET_RX_DROP;
- unsigned short type;
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler && ring_handler(skb, 1, 1)) {
-+ /* The packet has been copied into a ring */
-+ return(NET_RX_SUCCESS);
-+ }
-+#endif /* CONFIG_RING */
-+
-
- /* if we've gotten here through NAPI, check netpoll */
- if (skb->dev->poll && netpoll_rx(skb))
-diff --unified --recursive --new-file linux-2.6.15-rc6/net/Kconfig linux-2.6.15-rc6-1-686-smp-ring3/net/Kconfig
---- linux-2.6.15-rc6/net/Kconfig 2005-12-19 01:36:54.000000000 +0100
-+++ linux-2.6.15-rc6-1-686-smp-ring3/net/Kconfig 2005-12-24 00:24:02.000000000 +0100
-@@ -31,6 +31,7 @@
- source "net/unix/Kconfig"
- source "net/xfrm/Kconfig"
-
-+source "net/ring/Kconfig"
- config INET
- bool "TCP/IP networking"
- ---help---
-diff --unified --recursive --new-file linux-2.6.15-rc6/net/Makefile linux-2.6.15-rc6-1-686-smp-ring3/net/Makefile
---- linux-2.6.15-rc6/net/Makefile 2005-12-19 01:36:54.000000000 +0100
-+++ linux-2.6.15-rc6-1-686-smp-ring3/net/Makefile 2005-12-24 00:24:02.000000000 +0100
-@@ -42,6 +42,7 @@
- obj-$(CONFIG_DECNET) += decnet/
- obj-$(CONFIG_ECONET) += econet/
- obj-$(CONFIG_VLAN_8021Q) += 8021q/
-+obj-$(CONFIG_RING) += ring/
- obj-$(CONFIG_IP_DCCP) += dccp/
- obj-$(CONFIG_IP_SCTP) += sctp/
- obj-$(CONFIG_IEEE80211) += ieee80211/
-diff --unified --recursive --new-file linux-2.6.15-rc6/net/ring/Kconfig linux-2.6.15-rc6-1-686-smp-ring3/net/ring/Kconfig
---- linux-2.6.15-rc6/net/ring/Kconfig 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.15-rc6-1-686-smp-ring3/net/ring/Kconfig 2005-12-24 00:24:02.000000000 +0100
-@@ -0,0 +1,14 @@
-+config RING
-+ tristate "PF_RING sockets (EXPERIMENTAL)"
-+ depends on EXPERIMENTAL
-+ ---help---
-+ PF_RING socket family, optimized for packet capture.
-+ If a PF_RING socket is bound to an adapter (via the bind() system
-+ call), such adapter will be used in read-only mode until the socket
-+ is destroyed. Whenever an incoming packet is received from the adapter
-+ it will not passed to upper layers, but instead it is copied to a ring
-+ buffer, which in turn is exported to user space applications via mmap.
-+ Please refer to http://luca.ntop.org/Ring.pdf for more.
-+
-+ Say N unless you know what you are doing.
-+
-diff --unified --recursive --new-file linux-2.6.15-rc6/net/ring/Makefile linux-2.6.15-rc6-1-686-smp-ring3/net/ring/Makefile
---- linux-2.6.15-rc6/net/ring/Makefile 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.15-rc6-1-686-smp-ring3/net/ring/Makefile 2005-12-24 00:24:02.000000000 +0100
-@@ -0,0 +1,7 @@
-+#
-+# Makefile for the ring driver.
-+#
-+
-+obj-m += ring.o
-+
-+ring-objs := ring_packet.o
-diff --unified --recursive --new-file linux-2.6.15-rc6/net/ring/ring_packet.c linux-2.6.15-rc6-1-686-smp-ring3/net/ring/ring_packet.c
---- linux-2.6.15-rc6/net/ring/ring_packet.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.15-rc6-1-686-smp-ring3/net/ring/ring_packet.c 2005-12-24 00:24:02.000000000 +0100
-@@ -0,0 +1,1568 @@
-+/*
-+ *
-+ * (C) 2004-05 - Luca Deri <deri@ntop.org>
-+ *
-+ * This code includes contributions courtesy of
-+ * - Jeff Randall <jrandall@nexvu.com>
-+ * - Helmut Manck <helmut.manck@secunet.com>
-+ * - Brad Doctor <brad@stillsecure.com>
-+ * - Amit D. Chaudhary <amit_ml@rajgad.com>
-+ *
-+ */
-+
-+/*
-+ TO DO:
-+ add an entry inside the /proc filesystem
-+*/
-+
-+#include <linux/version.h>
-+#include <linux/config.h>
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <linux/socket.h>
-+#include <linux/skbuff.h>
-+#include <linux/rtnetlink.h>
-+#include <linux/in.h>
-+#include <linux/in6.h>
-+#include <linux/init.h>
-+#include <linux/filter.h>
-+#include <linux/ring.h>
-+#include <linux/ip.h>
-+#include <linux/tcp.h>
-+#include <linux/udp.h>
-+#include <linux/list.h>
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#include <net/xfrm.h>
-+#else
-+#include <linux/poll.h>
-+#endif
-+#include <net/sock.h>
-+#include <asm/io.h> /* needed for virt_to_phys() */
-+
-+/* #define RING_DEBUG */
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11))
-+static inline int remap_page_range(struct vm_area_struct *vma,
-+ unsigned long uvaddr,
-+ unsigned long paddr,
-+ unsigned long size,
-+ pgprot_t prot) {
-+ return(remap_pfn_range(vma, uvaddr, paddr >> PAGE_SHIFT,
-+ size, prot));
-+}
-+#endif
-+
-+/* ************************************************* */
-+
-+#define CLUSTER_LEN 8
-+
-+struct ring_cluster {
-+ u_short cluster_id; /* 0 = no cluster */
-+ u_short num_cluster_elements;
-+ enum cluster_type hashing_mode;
-+ u_short hashing_id;
-+ struct sock *sk[CLUSTER_LEN];
-+ struct ring_cluster *next; /* NULL = last element of the cluster */
-+};
-+
-+/* ************************************************* */
-+
-+struct ring_element {
-+ struct list_head list;
-+ struct sock *sk;
-+};
-+
-+/* ************************************************* */
-+
-+struct ring_opt {
-+ struct net_device *ring_netdev;
-+
-+ /* Cluster */
-+ u_short cluster_id; /* 0 = no cluster */
-+
-+ /* Reflector */
-+ struct net_device *reflector_dev;
-+
-+ /* Packet buffers */
-+ unsigned long order;
-+
-+ /* Ring Slots */
-+ unsigned long ring_memory;
-+ FlowSlotInfo *slots_info; /* Basically it points to ring_memory */
-+ char *ring_slots; /* Basically it points to ring_memory
-+ +sizeof(FlowSlotInfo) */
-+
-+ /* Packet Sampling */
-+ u_int pktToSample, sample_rate;
-+
-+ /* BPF Filter */
-+ struct sk_filter *bpfFilter;
-+
-+ /* Locks */
-+ atomic_t num_ring_slots_waiters;
-+ wait_queue_head_t ring_slots_waitqueue;
-+ rwlock_t ring_index_lock;
-+
-+ /* Indexes (Internal) */
-+ u_int insert_page_id, insert_slot_id;
-+};
-+
-+/* ************************************************* */
-+
-+/* List of all ring sockets. */
-+static struct list_head ring_table;
-+
-+/* List of all clusters */
-+static struct ring_cluster *ring_cluster_list;
-+
-+static rwlock_t ring_mgmt_lock = RW_LOCK_UNLOCKED;
-+
-+/* ********************************** */
-+
-+/* Forward */
-+static struct proto_ops ring_ops;
-+
-+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11))
-+static struct proto ring_proto;
-+#endif
-+
-+static int skb_ring_handler(struct sk_buff *skb, u_char recv_packet,
-+ u_char real_skb);
-+static int buffer_ring_handler(struct net_device *dev, char *data, int len);
-+static int remove_from_cluster(struct sock *sock, struct ring_opt *pfr);
-+
-+/* Extern */
-+
-+/* ********************************** */
-+
-+/* Defaults */
-+static u_int bucket_len = 128, num_slots = 4096, sample_rate = 1,
-+ transparent_mode = 1, enable_tx_capture = 0;
-+
-+MODULE_PARM(bucket_len, "i");
-+MODULE_PARM_DESC(bucket_len, "Number of ring buckets");
-+MODULE_PARM(num_slots, "i");
-+MODULE_PARM_DESC(num_slots, "Number of ring slots");
-+MODULE_PARM(sample_rate, "i");
-+MODULE_PARM_DESC(sample_rate, "Ring packet sample rate");
-+MODULE_PARM(transparent_mode, "i");
-+MODULE_PARM_DESC(transparent_mode,
-+ "Set to 1 to set transparent mode "
-+ "(slower but backwards compatible)");
-+MODULE_PARM(enable_tx_capture, "i");
-+MODULE_PARM_DESC(enable_tx_capture, "Set to 1 to capture outgoing packets");
-+
-+/* ********************************** */
-+
-+#define MIN_QUEUED_PKTS 64
-+#define MAX_QUEUE_LOOPS 64
-+
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#define ring_sk_datatype(__sk) ((struct ring_opt *)__sk)
-+#define ring_sk(__sk) ((__sk)->sk_protinfo)
-+#else
-+#define ring_sk_datatype(a) (a)
-+#define ring_sk(__sk) ((__sk)->protinfo.pf_ring)
-+#endif
-+
-+#define _rdtsc() ({ uint64_t x; asm volatile("rdtsc" : "=A" (x)); x; })
-+
-+/*
-+ int dev_queue_xmit(struct sk_buff *skb)
-+ skb->dev;
-+ struct net_device *dev_get_by_name(const char *name)
-+*/
-+
-+/* ********************************** */
-+
-+static void ring_sock_destruct(struct sock *sk) {
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ skb_queue_purge(&sk->sk_receive_queue);
-+
-+ if (!sock_flag(sk, SOCK_DEAD)) {
-+#if defined(RING_DEBUG)
-+ printk("Attempt to release alive ring socket: %p\n", sk);
-+#endif
-+ return;
-+ }
-+
-+ BUG_TRAP(!atomic_read(&sk->sk_rmem_alloc));
-+ BUG_TRAP(!atomic_read(&sk->sk_wmem_alloc));
-+#else
-+
-+ BUG_TRAP(atomic_read(&sk->rmem_alloc)==0);
-+ BUG_TRAP(atomic_read(&sk->wmem_alloc)==0);
-+
-+ if (!sk->dead) {
-+#if defined(RING_DEBUG)
-+ printk("Attempt to release alive ring socket: %p\n", sk);
-+#endif
-+ return;
-+ }
-+#endif
-+
-+ kfree(ring_sk(sk));
-+
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-+ MOD_DEC_USE_COUNT;
-+#endif
-+}
-+
-+/* ********************************** */
-+/*
-+ * ring_insert()
-+ *
-+ * store the sk in a new element and add it
-+ * to the head of the list.
-+ */
-+static inline void ring_insert(struct sock *sk) {
-+ struct ring_element *next;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_insert()\n");
-+#endif
-+
-+ next = kmalloc(sizeof(struct ring_element), GFP_ATOMIC);
-+ if(next != NULL) {
-+ next->sk = sk;
-+ write_lock_irq(&ring_mgmt_lock);
-+ list_add(&next->list, &ring_table);
-+ write_unlock_irq(&ring_mgmt_lock);
-+ } else {
-+ if (net_ratelimit())
-+ printk("RING: could not kmalloc slot!!\n");
-+ }
-+}
-+
-+/* ********************************** */
-+/*
-+ * ring_remove()
-+ *
-+ * For each of the elements in the list:
-+ * - check if this is the element we want to delete
-+ * - if it is, remove it from the list, and free it.
-+ *
-+ * stop when we find the one we're looking for (break),
-+ * or when we reach the end of the list.
-+ */
-+static inline void ring_remove(struct sock *sk) {
-+ struct list_head *ptr;
-+ struct ring_element *entry;
-+
-+
-+ for(ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) {
-+ entry = list_entry(ptr, struct ring_element, list);
-+
-+ if(entry->sk == sk) {
-+ write_lock_irq(&ring_mgmt_lock);
-+ list_del(ptr);
-+ kfree(ptr);
-+ write_unlock_irq(&ring_mgmt_lock);
-+ break;
-+ }
-+ }
-+
-+}
-+
-+/* ********************************** */
-+
-+static u_int32_t num_queued_pkts(struct ring_opt *pfr) {
-+
-+ if(pfr->ring_slots != NULL) {
-+
-+ u_int32_t tot_insert = pfr->slots_info->insert_idx,
-+#if defined(RING_DEBUG)
-+ tot_read = pfr->slots_info->tot_read, tot_pkts;
-+#else
-+ tot_read = pfr->slots_info->tot_read;
-+#endif
-+
-+ if(tot_insert >= tot_read) {
-+#if defined(RING_DEBUG)
-+ tot_pkts = tot_insert-tot_read;
-+#endif
-+ return(tot_insert-tot_read);
-+ } else {
-+#if defined(RING_DEBUG)
-+ tot_pkts = ((u_int32_t)-1)+tot_insert-tot_read;
-+#endif
-+ return(((u_int32_t)-1)+tot_insert-tot_read);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ printk("-> num_queued_pkts=%d [tot_insert=%d][tot_read=%d]\n",
-+ tot_pkts, tot_insert, tot_read);
-+#endif
-+
-+ } else
-+ return(0);
-+}
-+
-+/* ********************************** */
-+
-+static inline FlowSlot* get_insert_slot(struct ring_opt *pfr) {
-+#if defined(RING_DEBUG)
-+ printk("get_insert_slot(%d)\n", pfr->slots_info->insert_idx);
-+#endif
-+
-+ if(pfr->ring_slots != NULL) {
-+ FlowSlot *slot = (FlowSlot*)&(pfr->ring_slots[pfr->slots_info->insert_idx
-+ *pfr->slots_info->slot_len]);
-+ return(slot);
-+ } else
-+ return(NULL);
-+}
-+
-+/* ********************************** */
-+
-+static inline FlowSlot* get_remove_slot(struct ring_opt *pfr) {
-+#if defined(RING_DEBUG)
-+ printk("get_remove_slot(%d)\n", pfr->slots_info->remove_idx);
-+#endif
-+
-+ if(pfr->ring_slots != NULL)
-+ return((FlowSlot*)&(pfr->ring_slots[pfr->slots_info->remove_idx*
-+ pfr->slots_info->slot_len]));
-+ else
-+ return(NULL);
-+}
-+
-+/* ********************************** */
-+
-+static void add_skb_to_ring(struct sk_buff *skb,
-+ struct ring_opt *pfr,
-+ u_char recv_packet,
-+ u_char real_skb /* 1=skb 0=faked skb */) {
-+ FlowSlot *theSlot;
-+ int idx, displ;
-+
-+ if(recv_packet) {
-+ /* Hack for identifying a packet received by the e1000 */
-+ if(real_skb) {
-+ displ = SKB_DISPLACEMENT;
-+ } else
-+ displ = 0; /* Received by the e1000 wrapper */
-+ } else
-+ displ = 0;
-+
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->tot_pkts++;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+ /* BPF Filtering (from af_packet.c) */
-+ if(pfr->bpfFilter != NULL) {
-+ unsigned res = 1, len;
-+
-+ len = skb->len-skb->data_len;
-+
-+ write_lock(&pfr->ring_index_lock);
-+ skb->data -= displ;
-+ res = sk_run_filter(skb, pfr->bpfFilter->insns, pfr->bpfFilter->len);
-+ skb->data += displ;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+ if(res == 0) {
-+ /* Filter failed */
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb): Filter failed [len=%d][tot=%llu]"
-+ "[insertIdx=%d][pkt_type=%d][cloned=%d]\n",
-+ (int)skb->len, pfr->slots_info->tot_pkts,
-+ pfr->slots_info->insert_idx,
-+ skb->pkt_type, skb->cloned);
-+#endif
-+
-+ return;
-+ }
-+ }
-+
-+ /* ************************** */
-+
-+ if(pfr->sample_rate > 1) {
-+ if(pfr->pktToSample == 0) {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->pktToSample = pfr->sample_rate;
-+ write_unlock(&pfr->ring_index_lock);
-+ } else {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->pktToSample--;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb): sampled packet [len=%d]"
-+ "[tot=%llu][insertIdx=%d][pkt_type=%d][cloned=%d]\n",
-+ (int)skb->len, pfr->slots_info->tot_pkts,
-+ pfr->slots_info->insert_idx,
-+ skb->pkt_type, skb->cloned);
-+#endif
-+ return;
-+ }
-+ }
-+
-+ /* ************************************* */
-+
-+ if((pfr->reflector_dev != NULL)
-+ && (!netif_queue_stopped(pfr->reflector_dev))) {
-+ int cpu = smp_processor_id();
-+
-+ /* increase reference counter so that this skb is not freed */
-+ atomic_inc(&skb->users);
-+
-+ skb->data -= displ;
-+
-+ /* send it */
-+ if (pfr->reflector_dev->xmit_lock_owner != cpu) {
-+ spin_lock_bh(&pfr->reflector_dev->xmit_lock);
-+ pfr->reflector_dev->xmit_lock_owner = cpu;
-+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock);
-+
-+ if (pfr->reflector_dev->hard_start_xmit(skb,
-+ pfr->reflector_dev) == 0) {
-+ spin_lock_bh(&pfr->reflector_dev->xmit_lock);
-+ pfr->reflector_dev->xmit_lock_owner = -1;
-+ skb->data += displ;
-+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock);
-+#if defined(RING_DEBUG)
-+ printk("++ hard_start_xmit succeeded\n");
-+#endif
-+ return; /* OK */
-+ }
-+
-+ spin_lock_bh(&pfr->reflector_dev->xmit_lock);
-+ pfr->reflector_dev->xmit_lock_owner = -1;
-+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ printk("++ hard_start_xmit failed\n");
-+#endif
-+ skb->data += displ;
-+ return; /* -ENETDOWN */
-+ }
-+
-+ /* ************************************* */
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb) [len=%d][tot=%llu][insertIdx=%d]"
-+ "[pkt_type=%d][cloned=%d]\n",
-+ (int)skb->len, pfr->slots_info->tot_pkts,
-+ pfr->slots_info->insert_idx,
-+ skb->pkt_type, skb->cloned);
-+#endif
-+
-+ idx = pfr->slots_info->insert_idx;
-+ theSlot = get_insert_slot(pfr);
-+
-+ if((theSlot != NULL) && (theSlot->slot_state == 0)) {
-+ struct pcap_pkthdr *hdr;
-+ char *bucket;
-+
-+ /* Update Index */
-+ idx++;
-+
-+ if(idx == pfr->slots_info->tot_slots) {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->insert_idx = 0;
-+ write_unlock(&pfr->ring_index_lock);
-+ } else {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->insert_idx = idx;
-+ write_unlock(&pfr->ring_index_lock);
-+ }
-+
-+ bucket = &theSlot->bucket;
-+ hdr = (struct pcap_pkthdr*)bucket;
-+
-+ /* BD - API changed for time keeping */
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14))
-+ if(skb->stamp.tv_sec == 0) do_gettimeofday(&skb->stamp);
-+
-+ hdr->ts.tv_sec = skb->stamp.tv_sec, hdr->ts.tv_usec = skb->stamp.tv_usec;
-+#else
-+ if(skb->tstamp.off_sec == 0) __net_timestamp(skb);
-+
-+ hdr->ts.tv_sec = skb->tstamp.off_sec, hdr->ts.tv_usec = skb->tstamp.off_usec;
-+#endif
-+
-+ hdr->caplen = skb->len+displ;
-+
-+ if(hdr->caplen > pfr->slots_info->data_len)
-+ hdr->caplen = pfr->slots_info->data_len;
-+
-+ hdr->len = skb->len+displ;
-+ memcpy(&bucket[sizeof(struct pcap_pkthdr)],
-+ skb->data-displ, hdr->caplen);
-+
-+#if defined(RING_DEBUG)
-+ {
-+ static unsigned int lastLoss = 0;
-+
-+ if(pfr->slots_info->tot_lost
-+ && (lastLoss != pfr->slots_info->tot_lost)) {
-+ printk("add_skb_to_ring(%d): [data_len=%d]"
-+ "[hdr.caplen=%d][skb->len=%d]"
-+ "[pcap_pkthdr=%d][removeIdx=%d]"
-+ "[loss=%lu][page=%u][slot=%u]\n",
-+ idx-1, pfr->slots_info->data_len, hdr->caplen, skb->len,
-+ sizeof(struct pcap_pkthdr),
-+ pfr->slots_info->remove_idx,
-+ (long unsigned int)pfr->slots_info->tot_lost,
-+ pfr->insert_page_id, pfr->insert_slot_id);
-+
-+ lastLoss = pfr->slots_info->tot_lost;
-+ }
-+ }
-+#endif
-+
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->tot_insert++;
-+ theSlot->slot_state = 1;
-+ write_unlock(&pfr->ring_index_lock);
-+ } else {
-+ write_lock(&pfr->ring_index_lock);
-+ pfr->slots_info->tot_lost++;
-+ write_unlock(&pfr->ring_index_lock);
-+
-+#if defined(RING_DEBUG)
-+ printk("add_skb_to_ring(skb): packet lost [loss=%lu]"
-+ "[removeIdx=%u][insertIdx=%u]\n",
-+ (long unsigned int)pfr->slots_info->tot_lost,
-+ pfr->slots_info->remove_idx, pfr->slots_info->insert_idx);
-+#endif
-+ }
-+
-+ /* wakeup in case of poll() */
-+ if(waitqueue_active(&pfr->ring_slots_waitqueue))
-+ wake_up_interruptible(&pfr->ring_slots_waitqueue);
-+}
-+
-+/* ********************************** */
-+
-+static u_int hash_skb(struct ring_cluster *cluster_ptr,
-+ struct sk_buff *skb, u_char recv_packet) {
-+ u_int idx;
-+ int displ;
-+ struct iphdr *ip;
-+
-+ if(cluster_ptr->hashing_mode == cluster_round_robin) {
-+ idx = cluster_ptr->hashing_id++;
-+ } else {
-+ /* Per-flow clustering */
-+ if(skb->len > sizeof(struct iphdr)+sizeof(struct tcphdr)) {
-+ if(recv_packet)
-+ displ = 0;
-+ else
-+ displ = SKB_DISPLACEMENT;
-+
-+ /*
-+ skb->data+displ
-+
-+ Always points to to the IP part of the packet
-+ */
-+
-+ ip = (struct iphdr*)(skb->data+displ);
-+
-+ idx = ip->saddr+ip->daddr+ip->protocol;
-+
-+ if(ip->protocol == IPPROTO_TCP) {
-+ struct tcphdr *tcp = (struct tcphdr*)(skb->data+displ
-+ +sizeof(struct iphdr));
-+ idx += tcp->source+tcp->dest;
-+ } else if(ip->protocol == IPPROTO_UDP) {
-+ struct udphdr *udp = (struct udphdr*)(skb->data+displ
-+ +sizeof(struct iphdr));
-+ idx += udp->source+udp->dest;
-+ }
-+ } else
-+ idx = skb->len;
-+ }
-+
-+ return(idx % cluster_ptr->num_cluster_elements);
-+}
-+
-+/* ********************************** */
-+
-+static int skb_ring_handler(struct sk_buff *skb,
-+ u_char recv_packet,
-+ u_char real_skb /* 1=skb 0=faked skb */) {
-+ struct sock *skElement;
-+ int rc = 0;
-+ struct list_head *ptr;
-+ struct ring_cluster *cluster_ptr;
-+
-+#ifdef PROFILING
-+ uint64_t rdt = _rdtsc(), rdt1, rdt2;
-+#endif
-+
-+ if((!skb) /* Invalid skb */
-+ || ((!enable_tx_capture) && (!recv_packet))) {
-+ /*
-+ An outgoing packet is about to be sent out
-+ but we decided not to handle transmitted
-+ packets.
-+ */
-+ return(0);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ if(0) {
-+ printk("skb_ring_handler() [len=%d][dev=%s]\n", skb->len,
-+ skb->dev->name == NULL ? "<NULL>" : skb->dev->name);
-+ }
-+#endif
-+
-+#ifdef PROFILING
-+ rdt1 = _rdtsc();
-+#endif
-+
-+ /* [1] Check unclustered sockets */
-+ for (ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) {
-+ struct ring_opt *pfr;
-+ struct ring_element *entry;
-+
-+ entry = list_entry(ptr, struct ring_element, list);
-+
-+ read_lock(&ring_mgmt_lock);
-+ skElement = entry->sk;
-+ pfr = ring_sk(skElement);
-+ read_unlock(&ring_mgmt_lock);
-+
-+ if((pfr != NULL)
-+ && (pfr->cluster_id == 0 /* No cluster */)
-+ && (pfr->ring_slots != NULL)
-+ && (pfr->ring_netdev == skb->dev)) {
-+ /* We've found the ring where the packet can be stored */
-+ read_lock(&ring_mgmt_lock);
-+ add_skb_to_ring(skb, pfr, recv_packet, real_skb);
-+ read_unlock(&ring_mgmt_lock);
-+
-+ rc = 1; /* Ring found: we've done our job */
-+ }
-+ }
-+
-+ /* [2] Check socket clusters */
-+ cluster_ptr = ring_cluster_list;
-+
-+ while(cluster_ptr != NULL) {
-+ struct ring_opt *pfr;
-+
-+ if(cluster_ptr->num_cluster_elements > 0) {
-+ u_int skb_hash = hash_skb(cluster_ptr, skb, recv_packet);
-+
-+ read_lock(&ring_mgmt_lock);
-+ skElement = cluster_ptr->sk[skb_hash];
-+ read_unlock(&ring_mgmt_lock);
-+
-+ if(skElement != NULL) {
-+ pfr = ring_sk(skElement);
-+
-+ if((pfr != NULL)
-+ && (pfr->ring_slots != NULL)
-+ && (pfr->ring_netdev == skb->dev)) {
-+ /* We've found the ring where the packet can be stored */
-+ read_lock(&ring_mgmt_lock);
-+ add_skb_to_ring(skb, pfr, recv_packet, real_skb);
-+ read_unlock(&ring_mgmt_lock);
-+
-+ rc = 1; /* Ring found: we've done our job */
-+ }
-+ }
-+ }
-+
-+ cluster_ptr = cluster_ptr->next;
-+ }
-+
-+#ifdef PROFILING
-+ rdt1 = _rdtsc()-rdt1;
-+#endif
-+
-+#ifdef PROFILING
-+ rdt2 = _rdtsc();
-+#endif
-+
-+ if(transparent_mode) rc = 0;
-+
-+ if((rc != 0) && real_skb)
-+ dev_kfree_skb(skb); /* Free the skb */
-+
-+#ifdef PROFILING
-+ rdt2 = _rdtsc()-rdt2;
-+ rdt = _rdtsc()-rdt;
-+
-+#if defined(RING_DEBUG)
-+ printk("# cycles: %d [lock costed %d %d%%][free costed %d %d%%]\n",
-+ (int)rdt, rdt-rdt1,
-+ (int)((float)((rdt-rdt1)*100)/(float)rdt),
-+ rdt2,
-+ (int)((float)(rdt2*100)/(float)rdt));
-+#endif
-+#endif
-+
-+ return(rc); /* 0 = packet not handled */
-+}
-+
-+/* ********************************** */
-+
-+struct sk_buff skb;
-+
-+static int buffer_ring_handler(struct net_device *dev,
-+ char *data, int len) {
-+
-+#if defined(RING_DEBUG)
-+ printk("buffer_ring_handler: [dev=%s][len=%d]\n",
-+ dev->name == NULL ? "<NULL>" : dev->name, len);
-+#endif
-+
-+ /* BD - API changed for time keeping */
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14))
-+ skb.dev = dev, skb.len = len, skb.data = data,
-+ skb.data_len = len, skb.stamp.tv_sec = 0; /* Calculate the time */
-+#else
-+ skb.dev = dev, skb.len = len, skb.data = data,
-+ skb.data_len = len, skb.tstamp.off_sec = 0; /* Calculate the time */
-+#endif
-+
-+ skb_ring_handler(&skb, 1, 0 /* fake skb */);
-+
-+ return(0);
-+}
-+
-+/* ********************************** */
-+
-+static int ring_create(struct socket *sock, int protocol) {
-+ struct sock *sk;
-+ struct ring_opt *pfr;
-+ int err;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_create()\n");
-+#endif
-+
-+ /* Are you root, superuser or so ? */
-+ if(!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+
-+ if(sock->type != SOCK_RAW)
-+ return -ESOCKTNOSUPPORT;
-+
-+ if(protocol != htons(ETH_P_ALL))
-+ return -EPROTONOSUPPORT;
-+
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-+ MOD_INC_USE_COUNT;
-+#endif
-+
-+ err = -ENOMEM;
-+
-+ // BD: -- broke this out to keep it more simple and clear as to what the
-+ // options are.
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11))
-+ sk = sk_alloc(PF_RING, GFP_KERNEL, 1, NULL);
-+#else
-+ // BD: API changed in 2.6.12, ref:
-+ // http://svn.clkao.org/svnweb/linux/revision/?rev=28201
-+ sk = sk_alloc(PF_RING, GFP_ATOMIC, &ring_proto, 1);
-+#endif
-+#else
-+ /* Kernel 2.4 */
-+ sk = sk_alloc(PF_RING, GFP_KERNEL, 1);
-+#endif
-+
-+ if (sk == NULL)
-+ goto out;
-+
-+ sock->ops = &ring_ops;
-+ sock_init_data(sock, sk);
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11))
-+ sk_set_owner(sk, THIS_MODULE);
-+#endif
-+#endif
-+
-+ err = -ENOMEM;
-+ ring_sk(sk) = ring_sk_datatype(kmalloc(sizeof(*pfr), GFP_KERNEL));
-+
-+ if (!(pfr = ring_sk(sk))) {
-+ sk_free(sk);
-+ goto out;
-+ }
-+ memset(pfr, 0, sizeof(*pfr));
-+ init_waitqueue_head(&pfr->ring_slots_waitqueue);
-+ pfr->ring_index_lock = RW_LOCK_UNLOCKED;
-+ atomic_set(&pfr->num_ring_slots_waiters, 0);
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ sk->sk_family = PF_RING;
-+ sk->sk_destruct = ring_sock_destruct;
-+#else
-+ sk->family = PF_RING;
-+ sk->destruct = ring_sock_destruct;
-+ sk->num = protocol;
-+#endif
-+
-+ ring_insert(sk);
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_create() - created\n");
-+#endif
-+
-+ return(0);
-+ out:
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-+ MOD_DEC_USE_COUNT;
-+#endif
-+ return err;
-+}
-+
-+/* *********************************************** */
-+
-+static int ring_release(struct socket *sock)
-+{
-+ struct sock *sk = sock->sk;
-+ struct ring_opt *pfr = ring_sk(sk);
-+
-+ if(!sk)
-+ return 0;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: called ring_release\n");
-+#endif
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_release entered\n");
-+#endif
-+
-+ ring_remove(sk);
-+
-+ sock_orphan(sk);
-+ sock->sk = NULL;
-+
-+ /* Free the ring buffer */
-+ if(pfr->ring_memory) {
-+ struct page *page, *page_end;
-+
-+ page_end = virt_to_page(pfr->ring_memory + (PAGE_SIZE << pfr->order) - 1);
-+ for(page = virt_to_page(pfr->ring_memory); page <= page_end; page++)
-+ ClearPageReserved(page);
-+
-+ free_pages(pfr->ring_memory, pfr->order);
-+ }
-+
-+ kfree(pfr);
-+ ring_sk(sk) = NULL;
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ skb_queue_purge(&sk->sk_write_queue);
-+#endif
-+ sock_put(sk);
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_release leaving\n");
-+#endif
-+
-+ return 0;
-+}
-+
-+/* ********************************** */
-+/*
-+ * We create a ring for this socket and bind it to the specified device
-+ */
-+static int packet_ring_bind(struct sock *sk, struct net_device *dev)
-+{
-+ u_int the_slot_len;
-+ u_int32_t tot_mem;
-+ struct ring_opt *pfr = ring_sk(sk);
-+ struct page *page, *page_end;
-+
-+ if(!dev) return(-1);
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: packet_ring_bind(%s) called\n", dev->name);
-+#endif
-+
-+ /* **********************************************
-+
-+ *************************************
-+ * *
-+ * FlowSlotInfo *
-+ * *
-+ ************************************* <-+
-+ * FlowSlot * |
-+ ************************************* |
-+ * FlowSlot * |
-+ ************************************* +- num_slots
-+ * FlowSlot * |
-+ ************************************* |
-+ * FlowSlot * |
-+ ************************************* <-+
-+
-+ ********************************************** */
-+
-+ the_slot_len = sizeof(u_char) /* flowSlot.slot_state */
-+#ifdef RING_MAGIC
-+ + sizeof(u_char)
-+#endif
-+ + sizeof(struct pcap_pkthdr)
-+ + bucket_len /* flowSlot.bucket */;
-+
-+ tot_mem = sizeof(FlowSlotInfo) + num_slots*the_slot_len;
-+
-+ /*
-+ Calculate the value of the order parameter used later.
-+ See http://www.linuxjournal.com/article.php?sid=1133
-+ */
-+ for(pfr->order = 0;(PAGE_SIZE << pfr->order) < tot_mem; pfr->order++) ;
-+
-+ /*
-+ We now try to allocate the memory as required. If we fail
-+ we try to allocate a smaller amount or memory (hence a
-+ smaller ring).
-+ */
-+ while((pfr->ring_memory = __get_free_pages(GFP_ATOMIC, pfr->order)) == 0)
-+ if(pfr->order-- == 0)
-+ break;
-+
-+ if(pfr->order == 0) {
-+ printk("RING: ERROR not enough memory for ring\n");
-+ return(-1);
-+ } else {
-+ printk("RING: succesfully allocated %lu KB [tot_mem=%d][order=%ld]\n",
-+ PAGE_SIZE >> (10 - pfr->order), tot_mem, pfr->order);
-+ }
-+
-+ tot_mem = PAGE_SIZE << pfr->order;
-+ memset((char*)pfr->ring_memory, 0, tot_mem);
-+
-+ /* Now we need to reserve the pages */
-+ page_end = virt_to_page(pfr->ring_memory + (PAGE_SIZE << pfr->order) - 1);
-+ for(page = virt_to_page(pfr->ring_memory); page <= page_end; page++)
-+ SetPageReserved(page);
-+
-+ pfr->slots_info = (FlowSlotInfo*)pfr->ring_memory;
-+ pfr->ring_slots = (char*)(pfr->ring_memory+sizeof(FlowSlotInfo));
-+
-+ pfr->slots_info->version = RING_FLOWSLOT_VERSION;
-+ pfr->slots_info->slot_len = the_slot_len;
-+ pfr->slots_info->data_len = bucket_len;
-+ pfr->slots_info->tot_slots = (tot_mem-sizeof(FlowSlotInfo))/the_slot_len;
-+ pfr->slots_info->tot_mem = tot_mem;
-+ pfr->slots_info->sample_rate = sample_rate;
-+
-+ printk("RING: allocated %d slots [slot_len=%d][tot_mem=%u]\n",
-+ pfr->slots_info->tot_slots, pfr->slots_info->slot_len,
-+ pfr->slots_info->tot_mem);
-+
-+#ifdef RING_MAGIC
-+ {
-+ int i;
-+
-+ for(i=0; i<pfr->slots_info->tot_slots; i++) {
-+ unsigned long idx = i*pfr->slots_info->slot_len;
-+ FlowSlot *slot = (FlowSlot*)&pfr->ring_slots[idx];
-+ slot->magic = RING_MAGIC_VALUE; slot->slot_state = 0;
-+ }
-+ }
-+#endif
-+
-+ pfr->insert_page_id = 1, pfr->insert_slot_id = 0;
-+
-+ /*
-+ IMPORTANT
-+ Leave this statement here as last one. In fact when
-+ the ring_netdev != NULL the socket is ready to be used.
-+ */
-+ pfr->ring_netdev = dev;
-+
-+ return(0);
-+}
-+
-+/* ************************************* */
-+
-+/* Bind to a device */
-+static int ring_bind(struct socket *sock,
-+ struct sockaddr *sa, int addr_len)
-+{
-+ struct sock *sk=sock->sk;
-+ struct net_device *dev = NULL;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_bind() called\n");
-+#endif
-+
-+ /*
-+ * Check legality
-+ */
-+ if (addr_len != sizeof(struct sockaddr))
-+ return -EINVAL;
-+ if (sa->sa_family != PF_RING)
-+ return -EINVAL;
-+
-+ /* Safety check: add trailing zero if missing */
-+ sa->sa_data[sizeof(sa->sa_data)-1] = '\0';
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: searching device %s\n", sa->sa_data);
-+#endif
-+
-+ if((dev = __dev_get_by_name(sa->sa_data)) == NULL) {
-+#if defined(RING_DEBUG)
-+ printk("RING: search failed\n");
-+#endif
-+ return(-EINVAL);
-+ } else
-+ return(packet_ring_bind(sk, dev));
-+}
-+
-+/* ************************************* */
-+
-+static int ring_mmap(struct file *file,
-+ struct socket *sock,
-+ struct vm_area_struct *vma)
-+{
-+ struct sock *sk = sock->sk;
-+ struct ring_opt *pfr = ring_sk(sk);
-+ unsigned long size, start;
-+ u_int pagesToMap;
-+ char *ptr;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() called\n");
-+#endif
-+
-+ if(pfr->ring_memory == 0) {
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() failed: mapping area to an unbound socket\n");
-+#endif
-+ return -EINVAL;
-+ }
-+
-+ size = (unsigned long)(vma->vm_end-vma->vm_start);
-+
-+ if(size % PAGE_SIZE) {
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() failed: len is not multiple of PAGE_SIZE\n");
-+#endif
-+ return(-EINVAL);
-+ }
-+
-+ /* if userspace tries to mmap beyond end of our buffer, fail */
-+ if(size > pfr->slots_info->tot_mem) {
-+#if defined(RING_DEBUG)
-+ printk("proc_mmap() failed: area too large [%ld > %d]\n", size, pfr->slots_info->tot_mem);
-+#endif
-+ return(-EINVAL);
-+ }
-+
-+ pagesToMap = size/PAGE_SIZE;
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: ring_mmap() called. %d pages to map\n", pagesToMap);
-+#endif
-+
-+#if defined(RING_DEBUG)
-+ printk("RING: mmap [slot_len=%d][tot_slots=%d] for ring on device %s\n",
-+ pfr->slots_info->slot_len, pfr->slots_info->tot_slots,
-+ pfr->ring_netdev->name);
-+#endif
-+
-+ /* we do not want to have this area swapped out, lock it */
-+ vma->vm_flags |= VM_LOCKED;
-+ start = vma->vm_start;
-+
-+ /* Ring slots start from page 1 (page 0 is reserved for FlowSlotInfo) */
-+ ptr = (char*)(start+PAGE_SIZE);
-+
-+ if(remap_page_range(
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ vma,
-+#endif
-+ start,
-+ __pa(pfr->ring_memory),
-+ PAGE_SIZE*pagesToMap, vma->vm_page_prot)) {
-+#if defined(RING_DEBUG)
-+ printk("remap_page_range() failed\n");
-+#endif
-+ return(-EAGAIN);
-+ }
-+
-+#if defined(RING_DEBUG)
-+ printk("proc_mmap(pagesToMap=%d): success.\n", pagesToMap);
-+#endif
-+
-+ return 0;
-+}
-+
-+/* ************************************* */
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+static int ring_recvmsg(struct kiocb *iocb, struct socket *sock,
-+ struct msghdr *msg, size_t len, int flags)
-+#else
-+ static int ring_recvmsg(struct socket *sock, struct msghdr *msg, int len,
-+ int flags, struct scm_cookie *scm)
-+#endif
-+{
-+ FlowSlot* slot;
-+ struct ring_opt *pfr = ring_sk(sock->sk);
-+ u_int32_t queued_pkts, num_loops = 0;
-+
-+#if defined(RING_DEBUG)
-+ printk("ring_recvmsg called\n");
-+#endif
-+
-+ slot = get_remove_slot(pfr);
-+
-+ while((queued_pkts = num_queued_pkts(pfr)) < MIN_QUEUED_PKTS) {
-+ wait_event_interruptible(pfr->ring_slots_waitqueue, 1);
-+
-+#if defined(RING_DEBUG)
-+ printk("-> ring_recvmsg returning %d [queued_pkts=%d][num_loops=%d]\n",
-+ slot->slot_state, queued_pkts, num_loops);
-+#endif
-+
-+ if(queued_pkts > 0) {
-+ if(num_loops++ > MAX_QUEUE_LOOPS)
-+ break;
-+ }
-+ }
-+
-+#if defined(RING_DEBUG)
-+ if(slot != NULL)
-+ printk("ring_recvmsg is returning [queued_pkts=%d][num_loops=%d]\n",
-+ queued_pkts, num_loops);
-+#endif
-+
-+ return(queued_pkts);
-+}
-+
-+/* ************************************* */
-+
-+unsigned int ring_poll(struct file * file,
-+ struct socket *sock, poll_table *wait)
-+{
-+ FlowSlot* slot;
-+ struct ring_opt *pfr = ring_sk(sock->sk);
-+
-+#if defined(RING_DEBUG)
-+ printk("poll called\n");
-+#endif
-+
-+ slot = get_remove_slot(pfr);
-+
-+ if((slot != NULL) && (slot->slot_state == 0))
-+ poll_wait(file, &pfr->ring_slots_waitqueue, wait);
-+
-+#if defined(RING_DEBUG)
-+ printk("poll returning %d\n", slot->slot_state);
-+#endif
-+
-+ if((slot != NULL) && (slot->slot_state == 1))
-+ return(POLLIN | POLLRDNORM);
-+ else
-+ return(0);
-+}
-+
-+/* ************************************* */
-+
-+int add_to_cluster_list(struct ring_cluster *el,
-+ struct sock *sock) {
-+
-+ if(el->num_cluster_elements == CLUSTER_LEN)
-+ return(-1); /* Cluster full */
-+
-+ ring_sk_datatype(ring_sk(sock))->cluster_id = el->cluster_id;
-+ el->sk[el->num_cluster_elements] = sock;
-+ el->num_cluster_elements++;
-+ return(0);
-+}
-+
-+/* ************************************* */
-+
-+int remove_from_cluster_list(struct ring_cluster *el,
-+ struct sock *sock) {
-+ int i, j;
-+
-+ for(i=0; i<CLUSTER_LEN; i++)
-+ if(el->sk[i] == sock) {
-+ el->num_cluster_elements--;
-+
-+ if(el->num_cluster_elements > 0) {
-+ /* The cluster contains other elements */
-+ for(j=i; j<CLUSTER_LEN-1; j++)
-+ el->sk[j] = el->sk[j+1];
-+
-+ el->sk[CLUSTER_LEN-1] = NULL;
-+ } else {
-+ /* Empty cluster */
-+ memset(el->sk, 0, sizeof(el->sk));
-+ }
-+
-+ return(0);
-+ }
-+
-+ return(-1); /* Not found */
-+}
-+
-+/* ************************************* */
-+
-+static int remove_from_cluster(struct sock *sock,
-+ struct ring_opt *pfr)
-+{
-+ struct ring_cluster *el;
-+
-+#if defined(RING_DEBUG)
-+ printk("--> remove_from_cluster(%d)\n", pfr->cluster_id);
-+#endif
-+
-+ if(pfr->cluster_id == 0 /* 0 = No Cluster */)
-+ return(0); /* Noting to do */
-+
-+ el = ring_cluster_list;
-+
-+ while(el != NULL) {
-+ if(el->cluster_id == pfr->cluster_id) {
-+ return(remove_from_cluster_list(el, sock));
-+ } else
-+ el = el->next;
-+ }
-+
-+ return(-EINVAL); /* Not found */
-+}
-+
-+/* ************************************* */
-+
-+static int add_to_cluster(struct sock *sock,
-+ struct ring_opt *pfr,
-+ u_short cluster_id)
-+{
-+ struct ring_cluster *el;
-+
-+#ifndef RING_DEBUG
-+ printk("--> add_to_cluster(%d)\n", cluster_id);
-+#endif
-+
-+ if(cluster_id == 0 /* 0 = No Cluster */) return(-EINVAL);
-+
-+ if(pfr->cluster_id != 0)
-+ remove_from_cluster(sock, pfr);
-+
-+ el = ring_cluster_list;
-+
-+ while(el != NULL) {
-+ if(el->cluster_id == cluster_id) {
-+ return(add_to_cluster_list(el, sock));
-+ } else
-+ el = el->next;
-+ }
-+
-+ /* There's no existing cluster. We need to create one */
-+ if((el = kmalloc(sizeof(struct ring_cluster), GFP_KERNEL)) == NULL)
-+ return(-ENOMEM);
-+
-+ el->cluster_id = cluster_id;
-+ el->num_cluster_elements = 1;
-+ el->hashing_mode = cluster_per_flow; /* Default */
-+ el->hashing_id = 0;
-+
-+ memset(el->sk, 0, sizeof(el->sk));
-+ el->sk[0] = sock;
-+ el->next = ring_cluster_list;
-+ ring_cluster_list = el;
-+ pfr->cluster_id = cluster_id;
-+
-+ return(0); /* 0 = OK */
-+}
-+
-+/* ************************************* */
-+
-+/* Code taken/inspired from core/sock.c */
-+static int ring_setsockopt(struct socket *sock,
-+ int level, int optname,
-+ char *optval, int optlen)
-+{
-+ struct ring_opt *pfr = ring_sk(sock->sk);
-+ int val, found, ret = 0;
-+ u_int cluster_id;
-+ char devName[8];
-+
-+ if((optlen<sizeof(int)) || (pfr == NULL))
-+ return(-EINVAL);
-+
-+ if (get_user(val, (int *)optval))
-+ return -EFAULT;
-+
-+ found = 1;
-+
-+ switch(optname)
-+ {
-+ case SO_ATTACH_FILTER:
-+ ret = -EINVAL;
-+ if (optlen == sizeof(struct sock_fprog)) {
-+ unsigned int fsize;
-+ struct sock_fprog fprog;
-+ struct sk_filter *filter;
-+
-+ ret = -EFAULT;
-+
-+ /*
-+ NOTE
-+
-+ Do not call copy_from_user within a held
-+ splinlock (e.g. ring_mgmt_lock) as this caused
-+ problems when certain debugging was enabled under
-+ 2.6.5 -- including hard lockups of the machine.
-+ */
-+ if(copy_from_user(&fprog, optval, sizeof(fprog)))
-+ break;
-+
-+ fsize = sizeof(struct sock_filter) * fprog.len;
-+ filter = kmalloc(fsize, GFP_KERNEL);
-+
-+ if(filter == NULL) {
-+ ret = -ENOMEM;
-+ break;
-+ }
-+
-+ if(copy_from_user(filter->insns, fprog.filter, fsize))
-+ break;
-+
-+ filter->len = fprog.len;
-+
-+ if(sk_chk_filter(filter->insns, filter->len) != 0) {
-+ /* Bad filter specified */
-+ kfree(filter);
-+ pfr->bpfFilter = NULL;
-+ break;
-+ }
-+
-+ /* get the lock, set the filter, release the lock */
-+ write_lock(&ring_mgmt_lock);
-+ pfr->bpfFilter = filter;
-+ write_unlock(&ring_mgmt_lock);
-+ }
-+ ret = 0;
-+ break;
-+
-+ case SO_DETACH_FILTER:
-+ write_lock(&ring_mgmt_lock);
-+ found = 1;
-+ if(pfr->bpfFilter != NULL) {
-+ kfree(pfr->bpfFilter);
-+ pfr->bpfFilter = NULL;
-+ write_unlock(&ring_mgmt_lock);
-+ break;
-+ }
-+ ret = -ENONET;
-+ break;
-+
-+ case SO_ADD_TO_CLUSTER:
-+ if (optlen!=sizeof(val))
-+ return -EINVAL;
-+
-+ if (copy_from_user(&cluster_id, optval, sizeof(cluster_id)))
-+ return -EFAULT;
-+
-+ write_lock(&ring_mgmt_lock);
-+ ret = add_to_cluster(sock->sk, pfr, cluster_id);
-+ write_unlock(&ring_mgmt_lock);
-+ break;
-+
-+ case SO_REMOVE_FROM_CLUSTER:
-+ write_lock(&ring_mgmt_lock);
-+ ret = remove_from_cluster(sock->sk, pfr);
-+ write_unlock(&ring_mgmt_lock);
-+ break;
-+
-+ case SO_SET_REFLECTOR:
-+ if(optlen >= (sizeof(devName)-1))
-+ return -EINVAL;
-+
-+ if(optlen > 0) {
-+ if(copy_from_user(devName, optval, optlen))
-+ return -EFAULT;
-+ }
-+
-+ devName[optlen] = '\0';
-+
-+#if defined(RING_DEBUG)
-+ printk("+++ SO_SET_REFLECTOR(%s)\n", devName);
-+#endif
-+
-+ write_lock(&ring_mgmt_lock);
-+ pfr->reflector_dev = dev_get_by_name(devName);
-+ write_unlock(&ring_mgmt_lock);
-+
-+#if defined(RING_DEBUG)
-+ if(pfr->reflector_dev != NULL)
-+ printk("SO_SET_REFLECTOR(%s): succeded\n", devName);
-+ else
-+ printk("SO_SET_REFLECTOR(%s): device unknown\n", devName);
-+#endif
-+ break;
-+
-+ default:
-+ found = 0;
-+ break;
-+ }
-+
-+ if(found)
-+ return(ret);
-+ else
-+ return(sock_setsockopt(sock, level, optname, optval, optlen));
-+}
-+
-+/* ************************************* */
-+
-+static int ring_ioctl(struct socket *sock,
-+ unsigned int cmd, unsigned long arg)
-+{
-+ switch(cmd)
-+ {
-+ case SIOCGIFFLAGS:
-+ case SIOCSIFFLAGS:
-+ case SIOCGIFCONF:
-+ case SIOCGIFMETRIC:
-+ case SIOCSIFMETRIC:
-+ case SIOCGIFMEM:
-+ case SIOCSIFMEM:
-+ case SIOCGIFMTU:
-+ case SIOCSIFMTU:
-+ case SIOCSIFLINK:
-+ case SIOCGIFHWADDR:
-+ case SIOCSIFHWADDR:
-+ case SIOCSIFMAP:
-+ case SIOCGIFMAP:
-+ case SIOCSIFSLAVE:
-+ case SIOCGIFSLAVE:
-+ case SIOCGIFINDEX:
-+ case SIOCGIFNAME:
-+ case SIOCGIFCOUNT:
-+ case SIOCSIFHWBROADCAST:
-+ return(dev_ioctl(cmd,(void *) arg));
-+
-+ default:
-+ return -EOPNOTSUPP;
-+ }
-+
-+ return 0;
-+}
-+
-+/* ************************************* */
-+
-+static struct proto_ops ring_ops = {
-+ .family = PF_RING,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ .owner = THIS_MODULE,
-+#endif
-+
-+ /* Operations that make no sense on ring sockets. */
-+ .connect = sock_no_connect,
-+ .socketpair = sock_no_socketpair,
-+ .accept = sock_no_accept,
-+ .getname = sock_no_getname,
-+ .listen = sock_no_listen,
-+ .shutdown = sock_no_shutdown,
-+ .sendpage = sock_no_sendpage,
-+ .sendmsg = sock_no_sendmsg,
-+ .getsockopt = sock_no_getsockopt,
-+
-+ /* Now the operations that really occur. */
-+ .release = ring_release,
-+ .bind = ring_bind,
-+ .mmap = ring_mmap,
-+ .poll = ring_poll,
-+ .setsockopt = ring_setsockopt,
-+ .ioctl = ring_ioctl,
-+ .recvmsg = ring_recvmsg,
-+};
-+
-+/* ************************************ */
-+
-+static struct net_proto_family ring_family_ops = {
-+ .family = PF_RING,
-+ .create = ring_create,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+ .owner = THIS_MODULE,
-+#endif
-+};
-+
-+// BD: API changed in 2.6.12, ref:
-+// http://svn.clkao.org/svnweb/linux/revision/?rev=28201
-+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11))
-+static struct proto ring_proto = {
-+ .name = "PF_RING",
-+ .owner = THIS_MODULE,
-+ .obj_size = sizeof(struct sock),
-+};
-+#endif
-+
-+/* ************************************ */
-+
-+static void __exit ring_exit(void)
-+{
-+ struct list_head *ptr;
-+ struct ring_element *entry;
-+
-+ for(ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) {
-+ entry = list_entry(ptr, struct ring_element, list);
-+ kfree(entry);
-+ }
-+
-+ while(ring_cluster_list != NULL) {
-+ struct ring_cluster *next = ring_cluster_list->next;
-+ kfree(ring_cluster_list);
-+ ring_cluster_list = next;
-+ }
-+
-+ set_skb_ring_handler(NULL);
-+ set_buffer_ring_handler(NULL);
-+ sock_unregister(PF_RING);
-+
-+ printk("PF_RING shut down.\n");
-+}
-+
-+/* ************************************ */
-+
-+static int __init ring_init(void)
-+{
-+ printk("Welcome to PF_RING %s\n(C) 2004-05 L.Deri <deri@ntop.org>\n",
-+ RING_VERSION);
-+
-+ INIT_LIST_HEAD(&ring_table);
-+ ring_cluster_list = NULL;
-+
-+ sock_register(&ring_family_ops);
-+
-+ set_skb_ring_handler(skb_ring_handler);
-+ set_buffer_ring_handler(buffer_ring_handler);
-+
-+ if(get_buffer_ring_handler() != buffer_ring_handler) {
-+ printk("PF_RING: set_buffer_ring_handler FAILED\n");
-+
-+ set_skb_ring_handler(NULL);
-+ set_buffer_ring_handler(NULL);
-+ sock_unregister(PF_RING);
-+ return -1;
-+ } else {
-+ printk("PF_RING: bucket length %d bytes\n", bucket_len);
-+ printk("PF_RING: ring slots %d\n", num_slots);
-+ printk("PF_RING: sample rate %d [1=no sampling]\n", sample_rate);
-+ printk("PF_RING: capture TX %s\n",
-+ enable_tx_capture ? "Yes [RX+TX]" : "No [RX only]");
-+ printk("PF_RING: transparent mode %s\n",
-+ transparent_mode ? "Yes" : "No");
-+
-+ printk("PF_RING initialized correctly.\n");
-+ return 0;
-+ }
-+}
-+
-+module_init(ring_init);
-+module_exit(ring_exit);
-+MODULE_LICENSE("GPL");
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+MODULE_ALIAS_NETPROTO(PF_RING);
-+#endif
projects / openwrt / svn-archive / openwrt.git / commitdiff