From 7690af3fff7633e40b1b9950eb8489129251d074 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 13 Aug 2005 20:34:54 -0300 Subject: [PATCH] [DCCP]: Just reflow the source code to fit in 80 columns Andrew Morton should be happy now 8) Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- net/dccp/ccid.h | 18 ++-- net/dccp/dccp.h | 56 ++++++---- net/dccp/input.c | 100 +++++++++++------- net/dccp/ipv4.c | 114 +++++++++++++------- net/dccp/minisocks.c | 37 ++++--- net/dccp/options.c | 215 +++++++++++++++++++++++--------------- net/dccp/output.c | 44 +++++--- net/dccp/packet_history.c | 11 +- net/dccp/packet_history.h | 6 +- net/dccp/proto.c | 51 +++++---- net/dccp/timer.c | 36 ++++--- 11 files changed, 430 insertions(+), 258 deletions(-) diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h index 469f9a14b463..95eb47d85517 100644 --- a/net/dccp/ccid.h +++ b/net/dccp/ccid.h @@ -30,21 +30,26 @@ struct ccid { int (*ccid_hc_tx_init)(struct sock *sk); void (*ccid_hc_rx_exit)(struct sock *sk); void (*ccid_hc_tx_exit)(struct sock *sk); - void (*ccid_hc_rx_packet_recv)(struct sock *sk, struct sk_buff *skb); + void (*ccid_hc_rx_packet_recv)(struct sock *sk, + struct sk_buff *skb); int (*ccid_hc_rx_parse_options)(struct sock *sk, unsigned char option, unsigned char len, u16 idx, unsigned char* value); - void (*ccid_hc_rx_insert_options)(struct sock *sk, struct sk_buff *skb); - void (*ccid_hc_tx_insert_options)(struct sock *sk, struct sk_buff *skb); - void (*ccid_hc_tx_packet_recv)(struct sock *sk, struct sk_buff *skb); + void (*ccid_hc_rx_insert_options)(struct sock *sk, + struct sk_buff *skb); + void (*ccid_hc_tx_insert_options)(struct sock *sk, + struct sk_buff *skb); + void (*ccid_hc_tx_packet_recv)(struct sock *sk, + struct sk_buff *skb); int (*ccid_hc_tx_parse_options)(struct sock *sk, unsigned char option, unsigned char len, u16 idx, unsigned char* value); int (*ccid_hc_tx_send_packet)(struct sock *sk, struct sk_buff *skb, int len); - void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more, int len); + void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more, + int len); }; extern int ccid_register(struct ccid *ccid); @@ -123,7 +128,8 @@ static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk, { int rc = 0; if (ccid->ccid_hc_tx_parse_options != NULL) - rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx, value); + rc = ccid->ccid_hc_tx_parse_options(sk, option, len, idx, + value); return rc; } diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h index 8a0d7af649e4..62e735f1807d 100644 --- a/net/dccp/dccp.h +++ b/net/dccp/dccp.h @@ -25,7 +25,8 @@ extern int dccp_debug; do { if (dccp_debug) \ printk(KERN_DEBUG "%s: " format, __FUNCTION__ , ##a); \ } while (0) -#define dccp_pr_debug_cat(format, a...) do { if (dccp_debug) printk(format, ##a); } while (0) +#define dccp_pr_debug_cat(format, a...) do { if (dccp_debug) \ + printk(format, ##a); } while (0) #else #define dccp_pr_debug(format, a...) #define dccp_pr_debug_cat(format, a...) @@ -72,7 +73,8 @@ static inline const int after48(const u64 seq1, const u64 seq2) } /* is seq2 <= seq1 <= seq3 ? */ -static inline const int between48(const u64 seq1, const u64 seq2, const u64 seq3) +static inline const int between48(const u64 seq1, const u64 seq2, + const u64 seq3) { return (seq3 << 16) - (seq2 << 16) >= (seq1 << 16) - (seq2 << 16); } @@ -107,12 +109,14 @@ struct dccp_mib { } __SNMP_MIB_ALIGN__; DECLARE_SNMP_STAT(struct dccp_mib, dccp_statistics); -#define DCCP_INC_STATS(field) SNMP_INC_STATS(dccp_statistics, field) -#define DCCP_INC_STATS_BH(field) SNMP_INC_STATS_BH(dccp_statistics, field) -#define DCCP_INC_STATS_USER(field) SNMP_INC_STATS_USER(dccp_statistics, field) -#define DCCP_DEC_STATS(field) SNMP_DEC_STATS(dccp_statistics, field) -#define DCCP_ADD_STATS_BH(field, val) SNMP_ADD_STATS_BH(dccp_statistics, field, val) -#define DCCP_ADD_STATS_USER(field, val) SNMP_ADD_STATS_USER(dccp_statistics, field, val) +#define DCCP_INC_STATS(field) SNMP_INC_STATS(dccp_statistics, field) +#define DCCP_INC_STATS_BH(field) SNMP_INC_STATS_BH(dccp_statistics, field) +#define DCCP_INC_STATS_USER(field) SNMP_INC_STATS_USER(dccp_statistics, field) +#define DCCP_DEC_STATS(field) SNMP_DEC_STATS(dccp_statistics, field) +#define DCCP_ADD_STATS_BH(field, val) \ + SNMP_ADD_STATS_BH(dccp_statistics, field, val) +#define DCCP_ADD_STATS_USER(field, val) \ + SNMP_ADD_STATS_USER(dccp_statistics, field, val) extern int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb); extern int dccp_retransmit_skb(struct sock *sk, struct sk_buff *skb); @@ -234,8 +238,8 @@ extern int dccp_disconnect(struct sock *sk, int flags); extern int dccp_getsockopt(struct sock *sk, int level, int optname, char *optval, int *optlen); extern int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg); -extern int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, - size_t size); +extern int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, + struct msghdr *msg, size_t size); extern int dccp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, size_t len, int nonblock, int flags, int *addr_len); @@ -246,7 +250,8 @@ extern void dccp_shutdown(struct sock *sk, int how); extern int dccp_v4_checksum(const struct sk_buff *skb, const u32 saddr, const u32 daddr); -extern int dccp_v4_send_reset(struct sock *sk, enum dccp_reset_codes code); +extern int dccp_v4_send_reset(struct sock *sk, + enum dccp_reset_codes code); extern void dccp_send_close(struct sock *sk); struct dccp_skb_cb { @@ -303,7 +308,8 @@ static inline void dccp_inc_seqno(u64 *seqno) static inline void dccp_hdr_set_seq(struct dccp_hdr *dh, const u64 gss) { - struct dccp_hdr_ext *dhx = (struct dccp_hdr_ext *)((void *)dh + sizeof(*dh)); + struct dccp_hdr_ext *dhx = (struct dccp_hdr_ext *)((void *)dh + + sizeof(*dh)); #if defined(__LITTLE_ENDIAN_BITFIELD) dh->dccph_seq = htonl((gss >> 32)) >> 8; @@ -315,7 +321,8 @@ static inline void dccp_hdr_set_seq(struct dccp_hdr *dh, const u64 gss) dhx->dccph_seq_low = htonl(gss & 0xffffffff); } -static inline void dccp_hdr_set_ack(struct dccp_hdr_ack_bits *dhack, const u64 gsr) +static inline void dccp_hdr_set_ack(struct dccp_hdr_ack_bits *dhack, + const u64 gsr) { #if defined(__LITTLE_ENDIAN_BITFIELD) dhack->dccph_ack_nr_high = htonl((gsr >> 32)) >> 8; @@ -332,11 +339,14 @@ static inline void dccp_update_gsr(struct sock *sk, u64 seq) struct dccp_sock *dp = dccp_sk(sk); u64 tmp_gsr; - dccp_set_seqno(&tmp_gsr, dp->dccps_gsr + 1 - (dp->dccps_options.dccpo_sequence_window / 4)); + dccp_set_seqno(&tmp_gsr, + (dp->dccps_gsr + 1 - + (dp->dccps_options.dccpo_sequence_window / 4))); dp->dccps_gsr = seq; dccp_set_seqno(&dp->dccps_swl, max48(tmp_gsr, dp->dccps_isr)); dccp_set_seqno(&dp->dccps_swh, - dp->dccps_gsr + (3 * dp->dccps_options.dccpo_sequence_window) / 4); + (dp->dccps_gsr + + (3 * dp->dccps_options.dccpo_sequence_window) / 4)); } static inline void dccp_update_gss(struct sock *sk, u64 seq) @@ -344,7 +354,9 @@ static inline void dccp_update_gss(struct sock *sk, u64 seq) struct dccp_sock *dp = dccp_sk(sk); u64 tmp_gss; - dccp_set_seqno(&tmp_gss, dp->dccps_gss - dp->dccps_options.dccpo_sequence_window + 1); + dccp_set_seqno(&tmp_gss, + (dp->dccps_gss - + dp->dccps_options.dccpo_sequence_window + 1)); dp->dccps_awl = max48(tmp_gss, dp->dccps_iss); dp->dccps_awh = dp->dccps_gss = seq; } @@ -373,16 +385,20 @@ extern struct socket *dccp_ctl_socket; * * @dccpap_buf_head - circular buffer head * @dccpap_buf_tail - circular buffer tail - * @dccpap_buf_ackno - ack # of the most recent packet acknoldgeable in the buffer (i.e. %dccpap_buf_head) - * @dccpap_buf_nonce - the one-bit sum of the ECN Nonces on all packets acked by the buffer with State 0 + * @dccpap_buf_ackno - ack # of the most recent packet acknowledgeable in the + * buffer (i.e. %dccpap_buf_head) + * @dccpap_buf_nonce - the one-bit sum of the ECN Nonces on all packets acked + * by the buffer with State 0 * * Additionally, the HC-Receiver must keep some information about the * Ack Vectors it has recently sent. For each packet sent carrying an * Ack Vector, it remembers four variables: * - * @dccpap_ack_seqno - the Sequence Number used for the packet (HC-Receiver seqno) + * @dccpap_ack_seqno - the Sequence Number used for the packet + * (HC-Receiver seqno) * @dccpap_ack_ptr - the value of buf_head at the time of acknowledgement. - * @dccpap_ack_ackno - the Acknowledgement Number used for the packet (HC-Sender seqno) + * @dccpap_ack_ackno - the Acknowledgement Number used for the packet + * (HC-Sender seqno) * @dccpap_ack_nonce - the one-bit sum of the ECN Nonces for all State 0. * * @dccpap_buf_len - circular buffer length diff --git a/net/dccp/input.c b/net/dccp/input.c index bdaecde0bde1..4b8638f153a5 100644 --- a/net/dccp/input.c +++ b/net/dccp/input.c @@ -93,7 +93,8 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb) */ if (dh->dccph_type == DCCP_PKT_SYNC || dh->dccph_type == DCCP_PKT_SYNCACK) { - if (between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, dp->dccps_awl, dp->dccps_awh) && + if (between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, + dp->dccps_awl, dp->dccps_awh) && !before48(DCCP_SKB_CB(skb)->dccpd_seq, dp->dccps_swl)) dccp_update_gsr(sk, DCCP_SKB_CB(skb)->dccpd_seq); else @@ -122,11 +123,13 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb) if (between48(DCCP_SKB_CB(skb)->dccpd_seq, lswl, dp->dccps_swh) && (DCCP_SKB_CB(skb)->dccpd_ack_seq == DCCP_PKT_WITHOUT_ACK_SEQ || - between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, lawl, dp->dccps_awh))) { + between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, + lawl, dp->dccps_awh))) { dccp_update_gsr(sk, DCCP_SKB_CB(skb)->dccpd_seq); if (dh->dccph_type != DCCP_PKT_SYNC && - DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ) + (DCCP_SKB_CB(skb)->dccpd_ack_seq != + DCCP_PKT_WITHOUT_ACK_SEQ)) dp->dccps_gar = DCCP_SKB_CB(skb)->dccpd_ack_seq; } else { dccp_pr_debug("Step 6 failed, sending SYNC...\n"); @@ -161,10 +164,13 @@ int dccp_rcv_established(struct sock *sk, struct sk_buff *skb, if (dccp_ackpkts_add(dp->dccps_hc_rx_ackpkts, DCCP_SKB_CB(skb)->dccpd_seq, DCCP_ACKPKTS_STATE_RECEIVED)) { - LIMIT_NETDEBUG(KERN_INFO "DCCP: acknowledgeable packets buffer full!\n"); + LIMIT_NETDEBUG(KERN_INFO "DCCP: acknowledgeable " + "packets buffer full!\n"); ap->dccpap_ack_seqno = DCCP_MAX_SEQNO + 1; inet_csk_schedule_ack(sk); - inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, TCP_DELACK_MIN, TCP_RTO_MAX); + inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, + TCP_DELACK_MIN, + DCCP_RTO_MAX); goto discard; } @@ -175,7 +181,8 @@ int dccp_rcv_established(struct sock *sk, struct sk_buff *skb, */ if (!inet_csk_ack_scheduled(sk)) { inet_csk_schedule_ack(sk); - inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, 5 * HZ, TCP_RTO_MAX); + inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, 5 * HZ, + DCCP_RTO_MAX); } } @@ -186,8 +193,8 @@ int dccp_rcv_established(struct sock *sk, struct sk_buff *skb, case DCCP_PKT_DATAACK: case DCCP_PKT_DATA: /* - * FIXME: check if sk_receive_queue is full, schedule DATA_DROPPED option - * if it is. + * FIXME: check if sk_receive_queue is full, schedule DATA_DROPPED + * option if it is. */ __skb_pull(skb, dh->dccph_doff * 4); __skb_queue_tail(&sk->sk_receive_queue, skb); @@ -272,11 +279,13 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk, __kfree_skb(sk->sk_send_head); sk->sk_send_head = NULL; - if (!between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, dp->dccps_awl, dp->dccps_awh)) { - dccp_pr_debug("invalid ackno: S.AWL=%llu, P.ackno=%llu, S.AWH=%llu \n", - (unsigned long long) dp->dccps_awl, - (unsigned long long) DCCP_SKB_CB(skb)->dccpd_ack_seq, - (unsigned long long) dp->dccps_awh); + if (!between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, + dp->dccps_awl, dp->dccps_awh)) { + dccp_pr_debug("invalid ackno: S.AWL=%llu, " + "P.ackno=%llu, S.AWH=%llu \n", + (unsigned long long)dp->dccps_awl, + (unsigned long long)DCCP_SKB_CB(skb)->dccpd_ack_seq, + (unsigned long long)dp->dccps_awh); goto out_invalid_packet; } @@ -296,16 +305,17 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk, /* * Step 10: Process REQUEST state (second part) * If S.state == REQUEST, - * / * If we get here, P is a valid Response from the server (see - * Step 4), and we should move to PARTOPEN state. PARTOPEN - * means send an Ack, don't send Data packets, retransmit - * Acks periodically, and always include any Init Cookie from - * the Response * / + * / * If we get here, P is a valid Response from the + * server (see Step 4), and we should move to + * PARTOPEN state. PARTOPEN means send an Ack, + * don't send Data packets, retransmit Acks + * periodically, and always include any Init Cookie + * from the Response * / * S.state := PARTOPEN * Set PARTOPEN timer * Continue with S.state == PARTOPEN - * / * Step 12 will send the Ack completing the three-way - * handshake * / + * / * Step 12 will send the Ack completing the + * three-way handshake * / */ dccp_set_state(sk, DCCP_PARTOPEN); @@ -341,7 +351,8 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk, out_invalid_packet: return 1; /* dccp_v4_do_rcv will send a reset, but... - FIXME: the reset code should be DCCP_RESET_CODE_PACKET_ERROR */ + FIXME: the reset code should be + DCCP_RESET_CODE_PACKET_ERROR */ } static int dccp_rcv_respond_partopen_state_process(struct sock *sk, @@ -358,11 +369,12 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk, case DCCP_PKT_DATAACK: case DCCP_PKT_ACK: /* - * FIXME: we should be reseting the PARTOPEN (DELACK) timer here, - * but only if we haven't used the DELACK timer for something else, - * like sending a delayed ack for a TIMESTAMP echo, etc, for now - * were not clearing it, sending an extra ACK when there is nothing - * else to do in DELACK is not a big deal after all. + * FIXME: we should be reseting the PARTOPEN (DELACK) timer + * here but only if we haven't used the DELACK timer for + * something else, like sending a delayed ack for a TIMESTAMP + * echo, etc, for now were not clearing it, sending an extra + * ACK when there is nothing else to do in DELACK is not a big + * deal after all. */ /* Stop the PARTOPEN timer */ @@ -374,7 +386,8 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk, if (dh->dccph_type == DCCP_PKT_DATAACK) { dccp_rcv_established(sk, skb, dh, len); - queued = 1; /* packet was queued (by dccp_rcv_established) */ + queued = 1; /* packet was queued + (by dccp_rcv_established) */ } break; } @@ -399,7 +412,8 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb, if (dccp_parse_options(sk, skb)) goto discard; - if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ) + if (DCCP_SKB_CB(skb)->dccpd_ack_seq != + DCCP_PKT_WITHOUT_ACK_SEQ) dccp_event_ack_recv(sk, skb); ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb); @@ -415,14 +429,17 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb, DCCP_ACKPKTS_STATE_RECEIVED)) goto discard; /* - * FIXME: this activation is probably wrong, have to study more - * TCP delack machinery and how it fits into DCCP draft, but - * for now it kinda "works" 8) + * FIXME: this activation is probably wrong, have to + * study more TCP delack machinery and how it fits into + * DCCP draft, but for now it kinda "works" 8) */ - if (dp->dccps_hc_rx_ackpkts->dccpap_ack_seqno == DCCP_MAX_SEQNO + 1 && + if ((dp->dccps_hc_rx_ackpkts->dccpap_ack_seqno == + DCCP_MAX_SEQNO + 1) && !inet_csk_ack_scheduled(sk)) { inet_csk_schedule_ack(sk); - inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, TCP_DELACK_MIN, TCP_RTO_MAX); + inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, + TCP_DELACK_MIN, + DCCP_RTO_MAX); } } } @@ -436,7 +453,10 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb, * Drop packet and return */ if (dh->dccph_type == DCCP_PKT_RESET) { - /* Queue the equivalent of TCP fin so that dccp_recvmsg exits the loop */ + /* + * Queue the equivalent of TCP fin so that dccp_recvmsg + * exits the loop + */ dccp_fin(sk, skb); dccp_time_wait(sk, DCCP_TIME_WAIT, 0); return 0; @@ -450,10 +470,12 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb, * Drop packet and return */ } else if ((dp->dccps_role != DCCP_ROLE_CLIENT && - (dh->dccph_type == DCCP_PKT_RESPONSE || dh->dccph_type == DCCP_PKT_CLOSEREQ)) || + (dh->dccph_type == DCCP_PKT_RESPONSE || + dh->dccph_type == DCCP_PKT_CLOSEREQ)) || (dp->dccps_role == DCCP_ROLE_CLIENT && dh->dccph_type == DCCP_PKT_REQUEST) || - (sk->sk_state == DCCP_RESPOND && dh->dccph_type == DCCP_PKT_DATA)) { + (sk->sk_state == DCCP_RESPOND && + dh->dccph_type == DCCP_PKT_DATA)) { dccp_send_sync(sk, DCCP_SKB_CB(skb)->dccpd_seq); goto discard; } @@ -491,11 +513,13 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb, case DCCP_RESPOND: case DCCP_PARTOPEN: - queued = dccp_rcv_respond_partopen_state_process(sk, skb, dh, len); + queued = dccp_rcv_respond_partopen_state_process(sk, skb, + dh, len); break; } - if (dh->dccph_type == DCCP_PKT_ACK || dh->dccph_type == DCCP_PKT_DATAACK) { + if (dh->dccph_type == DCCP_PKT_ACK || + dh->dccph_type == DCCP_PKT_DATAACK) { switch (old_state) { case DCCP_PARTOPEN: sk->sk_state_change(sk); diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index d3770aed3b15..42d9c878d4c3 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -29,7 +29,7 @@ struct inet_hashinfo __cacheline_aligned dccp_hashinfo = { .lhash_lock = RW_LOCK_UNLOCKED, .lhash_users = ATOMIC_INIT(0), - .lhash_wait = __WAIT_QUEUE_HEAD_INITIALIZER(dccp_hashinfo.lhash_wait), + .lhash_wait = __WAIT_QUEUE_HEAD_INITIALIZER(dccp_hashinfo.lhash_wait), .portalloc_lock = SPIN_LOCK_UNLOCKED, .port_rover = 1024 - 1, }; @@ -61,7 +61,8 @@ static int __dccp_v4_check_established(struct sock *sk, const __u16 lport, const int dif = sk->sk_bound_dev_if; INET_ADDR_COOKIE(acookie, saddr, daddr) const __u32 ports = INET_COMBINED_PORTS(inet->dport, lport); - const int hash = inet_ehashfn(daddr, lport, saddr, inet->dport, dccp_hashinfo.ehash_size); + const int hash = inet_ehashfn(daddr, lport, saddr, inet->dport, + dccp_hashinfo.ehash_size); struct inet_ehash_bucket *head = &dccp_hashinfo.ehash[hash]; const struct sock *sk2; const struct hlist_node *node; @@ -133,11 +134,12 @@ static int dccp_v4_hash_connect(struct sock *sk) local_bh_disable(); /* TODO. Actually it is not so bad idea to remove - * dccp_hashinfo.portalloc_lock before next submission to Linus. + * dccp_hashinfo.portalloc_lock before next submission to + * Linus. * As soon as we touch this place at all it is time to think. * - * Now it protects single _advisory_ variable dccp_hashinfo.port_rover, - * hence it is mostly useless. + * Now it protects single _advisory_ variable + * dccp_hashinfo.port_rover, hence it is mostly useless. * Code will work nicely if we just delete it, but * I am afraid in contented case it will work not better or * even worse: another cpu just will hit the same bucket @@ -152,7 +154,8 @@ static int dccp_v4_hash_connect(struct sock *sk) rover++; if ((rover < low) || (rover > high)) rover = low; - head = &dccp_hashinfo.bhash[inet_bhashfn(rover, dccp_hashinfo.bhash_size)]; + head = &dccp_hashinfo.bhash[inet_bhashfn(rover, + dccp_hashinfo.bhash_size)]; spin_lock(&head->lock); /* Does not bother with rcv_saddr checks, @@ -172,7 +175,8 @@ static int dccp_v4_hash_connect(struct sock *sk) } } - tb = inet_bind_bucket_create(dccp_hashinfo.bind_bucket_cachep, head, rover); + tb = inet_bind_bucket_create(dccp_hashinfo.bind_bucket_cachep, + head, rover); if (tb == NULL) { spin_unlock(&head->lock); break; @@ -211,7 +215,8 @@ ok: goto out; } - head = &dccp_hashinfo.bhash[inet_bhashfn(snum, dccp_hashinfo.bhash_size)]; + head = &dccp_hashinfo.bhash[inet_bhashfn(snum, + dccp_hashinfo.bhash_size)]; tb = inet_csk(sk)->icsk_bind_hash; spin_lock_bh(&head->lock); if (sk_head(&tb->owners) == sk && sk->sk_bind_node.next == NULL) { @@ -313,7 +318,9 @@ static int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, out: return err; failure: - /* This unhashes the socket and releases the local port, if necessary. */ + /* + * This unhashes the socket and releases the local port, if necessary. + */ dccp_set_state(sk, DCCP_CLOSED); ip_rt_put(rt); sk->sk_route_caps = 0; @@ -365,8 +372,9 @@ static inline void dccp_do_pmtu_discovery(struct sock *sk, /* * From: draft-ietf-dccp-spec-11.txt * - * DCCP-Sync packets are the best choice for upward probing, - * since DCCP-Sync probes do not risk application data loss. + * DCCP-Sync packets are the best choice for upward + * probing, since DCCP-Sync probes do not risk application + * data loss. */ dccp_send_sync(sk, dp->dccps_gsr); } /* else let the usual retransmit timer handle it */ @@ -405,11 +413,13 @@ static void dccp_v4_ctl_send_ack(struct sk_buff *rxskb) dh->dccph_x = 1; dccp_hdr_set_seq(dh, DCCP_SKB_CB(rxskb)->dccpd_ack_seq); - dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), DCCP_SKB_CB(rxskb)->dccpd_seq); + dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), + DCCP_SKB_CB(rxskb)->dccpd_seq); bh_lock_sock(dccp_ctl_socket->sk); err = ip_build_and_send_pkt(skb, dccp_ctl_socket->sk, - rxskb->nh.iph->daddr, rxskb->nh.iph->saddr, NULL); + rxskb->nh.iph->daddr, + rxskb->nh.iph->saddr, NULL); bh_unlock_sock(dccp_ctl_socket->sk); if (err == NET_XMIT_CN || err == 0) { @@ -418,7 +428,8 @@ static void dccp_v4_ctl_send_ack(struct sk_buff *rxskb) } } -static void dccp_v4_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req) +static void dccp_v4_reqsk_send_ack(struct sk_buff *skb, + struct request_sock *req) { dccp_v4_ctl_send_ack(skb); } @@ -465,7 +476,8 @@ out: void dccp_v4_err(struct sk_buff *skb, u32 info) { const struct iphdr *iph = (struct iphdr *)skb->data; - const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + (iph->ihl << 2)); + const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + + (iph->ihl << 2)); struct dccp_sock *dp; struct inet_sock *inet; const int type = skb->h.icmph->type; @@ -605,7 +617,8 @@ out: sock_put(sk); } -extern struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst, enum dccp_reset_codes code); +extern struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst, + enum dccp_reset_codes code); int dccp_v4_send_reset(struct sock *sk, enum dccp_reset_codes code) { @@ -689,7 +702,8 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) ireq->loc_addr = daddr; ireq->rmt_addr = saddr; /* FIXME: Merge Aristeu's option parsing code when ready */ - req->rcv_wnd = 100; /* Fake, option parsing will get the right value */ + req->rcv_wnd = 100; /* Fake, option parsing will get the + right value */ ireq->opt = NULL; /* @@ -804,7 +818,8 @@ static struct sock *dccp_v4_hnd_req(struct sock *sk, struct sk_buff *skb) return sk; } -int dccp_v4_checksum(const struct sk_buff *skb, const u32 saddr, const u32 daddr) +int dccp_v4_checksum(const struct sk_buff *skb, const u32 saddr, + const u32 daddr) { const struct dccp_hdr* dh = dccp_hdr(skb); int checksum_len; @@ -814,11 +829,13 @@ int dccp_v4_checksum(const struct sk_buff *skb, const u32 saddr, const u32 daddr checksum_len = skb->len; else { checksum_len = (dh->dccph_cscov + dh->dccph_x) * sizeof(u32); - checksum_len = checksum_len < skb->len ? checksum_len : skb->len; + checksum_len = checksum_len < skb->len ? checksum_len : + skb->len; } tmp = csum_partial((unsigned char *)dh, checksum_len, 0); - return csum_tcpudp_magic(saddr, daddr, checksum_len, IPPROTO_DCCP, tmp); + return csum_tcpudp_magic(saddr, daddr, checksum_len, + IPPROTO_DCCP, tmp); } static int dccp_v4_verify_checksum(struct sk_buff *skb, @@ -832,10 +849,12 @@ static int dccp_v4_verify_checksum(struct sk_buff *skb, checksum_len = skb->len; else { checksum_len = (dh->dccph_cscov + dh->dccph_x) * sizeof(u32); - checksum_len = checksum_len < skb->len ? checksum_len : skb->len; + checksum_len = checksum_len < skb->len ? checksum_len : + skb->len; } tmp = csum_partial((unsigned char *)dh, checksum_len, 0); - return csum_tcpudp_magic(saddr, daddr, checksum_len, IPPROTO_DCCP, tmp) == 0 ? 0 : -1; + return csum_tcpudp_magic(saddr, daddr, checksum_len, + IPPROTO_DCCP, tmp) == 0 ? 0 : -1; } static struct dst_entry* dccp_v4_route_skb(struct sock *sk, @@ -850,7 +869,9 @@ static struct dst_entry* dccp_v4_route_skb(struct sock *sk, .proto = sk->sk_protocol, .uli_u = { .ports = { .sport = dccp_hdr(skb)->dccph_dport, - .dport = dccp_hdr(skb)->dccph_sport } } }; + .dport = dccp_hdr(skb)->dccph_sport } + } + }; if (ip_route_output_flow(&rt, &fl, sk, 0)) { IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES); @@ -899,17 +920,20 @@ void dccp_v4_ctl_send_reset(struct sk_buff *rxskb) dh->dccph_dport = rxdh->dccph_sport; dh->dccph_doff = dccp_hdr_reset_len / 4; dh->dccph_x = 1; - dccp_hdr_reset(skb)->dccph_reset_code = DCCP_SKB_CB(rxskb)->dccpd_reset_code; + dccp_hdr_reset(skb)->dccph_reset_code = + DCCP_SKB_CB(rxskb)->dccpd_reset_code; dccp_hdr_set_seq(dh, DCCP_SKB_CB(rxskb)->dccpd_ack_seq); - dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), DCCP_SKB_CB(rxskb)->dccpd_seq); + dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), + DCCP_SKB_CB(rxskb)->dccpd_seq); dh->dccph_checksum = dccp_v4_checksum(skb, rxskb->nh.iph->saddr, rxskb->nh.iph->daddr); bh_lock_sock(dccp_ctl_socket->sk); err = ip_build_and_send_pkt(skb, dccp_ctl_socket->sk, - rxskb->nh.iph->daddr, rxskb->nh.iph->saddr, NULL); + rxskb->nh.iph->daddr, + rxskb->nh.iph->saddr, NULL); bh_unlock_sock(dccp_ctl_socket->sk); if (err == NET_XMIT_CN || err == 0) { @@ -933,7 +957,8 @@ int dccp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) /* * Step 3: Process LISTEN state * If S.state == LISTEN, - * If P.type == Request or P contains a valid Init Cookie option, + * If P.type == Request or P contains a valid Init Cookie + * option, * * Must scan the packet's options to check for an Init * Cookie. Only the Init Cookie is processed here, * however; other options are processed in Step 8. This @@ -950,7 +975,8 @@ int dccp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) * Generate Reset(No Connection) unless P.type == Reset * Drop packet and return * - * NOTE: the check for the packet types is done in dccp_rcv_state_process + * NOTE: the check for the packet types is done in + * dccp_rcv_state_process */ if (sk->sk_state == DCCP_LISTEN) { struct sock *nsk = dccp_v4_hnd_req(sk, skb); @@ -1007,7 +1033,8 @@ static inline int dccp_invalid_packet(struct sk_buff *skb) } if (!pskb_may_pull(skb, dh->dccph_doff * sizeof(u32))) { - dccp_pr_debug("P.Data Offset(%u) too small 2\n", dh->dccph_doff); + dccp_pr_debug("P.Data Offset(%u) too small 2\n", + dh->dccph_doff); return 1; } @@ -1021,8 +1048,8 @@ static inline int dccp_invalid_packet(struct sk_buff *skb) dh->dccph_type != DCCP_PKT_DATA && dh->dccph_type != DCCP_PKT_ACK && dh->dccph_type != DCCP_PKT_DATAACK) { - dccp_pr_debug("P.type (%s) not Data, Ack nor DataAck and P.X == 0\n", - dccp_packet_name(dh->dccph_type)); + dccp_pr_debug("P.type (%s) not Data, Ack nor DataAck and " + "P.X == 0\n", dccp_packet_name(dh->dccph_type)); return 1; } @@ -1055,10 +1082,11 @@ int dccp_v4_rcv(struct sk_buff *skb) * dccp_ackpkts_add, you'll get something like this on a session that * sends 10 DATA/DATAACK packets: * - * dccp_ackpkts_print: 281473596467422 |0,0|3,0|0,0|3,0|0,0|3,0|0,0|3,0|0,1| + * ackpkts_print: 281473596467422 |0,0|3,0|0,0|3,0|0,0|3,0|0,0|3,0|0,1| * * 0, 0 means: DCCP_ACKPKTS_STATE_RECEIVED, RLE == just this packet - * 0, 1 means: DCCP_ACKPKTS_STATE_RECEIVED, RLE == two adjacent packets with the same state + * 0, 1 means: DCCP_ACKPKTS_STATE_RECEIVED, RLE == two adjacent packets + * with the same state * 3, 0 means: DCCP_ACKPKTS_STATE_NOT_RECEIVED, RLE == just this packet * * So... @@ -1072,10 +1100,12 @@ int dccp_v4_rcv(struct sk_buff *skb) * 281473596467416 was received * 281473596467415 was not received * 281473596467414 was received - * 281473596467413 was received (this one was the 3way handshake RESPONSE) + * 281473596467413 was received (this one was the 3way handshake + * RESPONSE) * */ - if (dh->dccph_type == DCCP_PKT_DATA || dh->dccph_type == DCCP_PKT_DATAACK) { + if (dh->dccph_type == DCCP_PKT_DATA || + dh->dccph_type == DCCP_PKT_DATAACK) { static int discard = 0; if (discard) { @@ -1170,7 +1200,8 @@ no_dccp_socket: * Drop packet and return */ if (dh->dccph_type != DCCP_PKT_RESET) { - DCCP_SKB_CB(skb)->dccpd_reset_code = DCCP_RESET_CODE_NO_CONNECTION; + DCCP_SKB_CB(skb)->dccpd_reset_code = + DCCP_RESET_CODE_NO_CONNECTION; dccp_v4_ctl_send_reset(skb); } @@ -1196,8 +1227,9 @@ static int dccp_v4_init_sock(struct sock *sk) dccp_options_init(&dp->dccps_options); if (dp->dccps_options.dccpo_send_ack_vector) { - dp->dccps_hc_rx_ackpkts = dccp_ackpkts_alloc(DCCP_MAX_ACK_VECTOR_LEN, - GFP_KERNEL); + dp->dccps_hc_rx_ackpkts = + dccp_ackpkts_alloc(DCCP_MAX_ACK_VECTOR_LEN, + GFP_KERNEL); if (dp->dccps_hc_rx_ackpkts == NULL) return -ENOMEM; @@ -1211,8 +1243,10 @@ static int dccp_v4_init_sock(struct sock *sk) * setsockopt(CCIDs-I-want/accept). -acme */ if (likely(!dccp_ctl_socket_init)) { - dp->dccps_hc_rx_ccid = ccid_init(dp->dccps_options.dccpo_ccid, sk); - dp->dccps_hc_tx_ccid = ccid_init(dp->dccps_options.dccpo_ccid, sk); + dp->dccps_hc_rx_ccid = ccid_init(dp->dccps_options.dccpo_ccid, + sk); + dp->dccps_hc_tx_ccid = ccid_init(dp->dccps_options.dccpo_ccid, + sk); if (dp->dccps_hc_rx_ccid == NULL || dp->dccps_hc_tx_ccid == NULL) { ccid_exit(dp->dccps_hc_rx_ccid, sk); diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c index a6a0b270fb6c..b8e67207e97e 100644 --- a/net/dccp/minisocks.c +++ b/net/dccp/minisocks.c @@ -69,8 +69,8 @@ void dccp_time_wait(struct sock *sk, int state, int timeo) * socket up. We've got bigger problems than * non-graceful socket closings. */ - if (net_ratelimit()) - printk(KERN_INFO "DCCP: time wait bucket table overflow\n"); + LIMIT_NETDEBUG(KERN_INFO "DCCP: time wait bucket " + "table overflow\n"); } dccp_done(sk); @@ -98,19 +98,23 @@ struct sock *dccp_create_openreq_child(struct sock *sk, newicsk->icsk_rto = DCCP_TIMEOUT_INIT; if (newdp->dccps_options.dccpo_send_ack_vector) { - newdp->dccps_hc_rx_ackpkts = dccp_ackpkts_alloc(DCCP_MAX_ACK_VECTOR_LEN, - GFP_ATOMIC); + newdp->dccps_hc_rx_ackpkts = + dccp_ackpkts_alloc(DCCP_MAX_ACK_VECTOR_LEN, + GFP_ATOMIC); /* - * XXX: We're using the same CCIDs set on the parent, i.e. sk_clone - * copied the master sock and left the CCID pointers for this child, - * that is why we do the __ccid_get calls. + * XXX: We're using the same CCIDs set on the parent, + * i.e. sk_clone copied the master sock and left the + * CCID pointers for this child, that is why we do the + * __ccid_get calls. */ if (unlikely(newdp->dccps_hc_rx_ackpkts == NULL)) goto out_free; } - if (unlikely(ccid_hc_rx_init(newdp->dccps_hc_rx_ccid, newsk) != 0 || - ccid_hc_tx_init(newdp->dccps_hc_tx_ccid, newsk) != 0)) { + if (unlikely(ccid_hc_rx_init(newdp->dccps_hc_rx_ccid, + newsk) != 0 || + ccid_hc_tx_init(newdp->dccps_hc_tx_ccid, + newsk) != 0)) { dccp_ackpkts_free(newdp->dccps_hc_rx_ackpkts); ccid_hc_rx_exit(newdp->dccps_hc_rx_ccid, newsk); ccid_hc_tx_exit(newdp->dccps_hc_tx_ccid, newsk); @@ -129,7 +133,8 @@ out_free: * Step 3: Process LISTEN state * * Choose S.ISS (initial seqno) or set from Init Cookie - * Set S.ISR, S.GSR, S.SWL, S.SWH from packet or Init Cookie + * Set S.ISR, S.GSR, S.SWL, S.SWH from packet or Init + * Cookie */ /* See dccp_v4_conn_request */ @@ -160,13 +165,15 @@ struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb, /* Check for retransmitted REQUEST */ if (dccp_hdr(skb)->dccph_type == DCCP_PKT_REQUEST) { - if (after48(DCCP_SKB_CB(skb)->dccpd_seq, dccp_rsk(req)->dreq_isr)) { + if (after48(DCCP_SKB_CB(skb)->dccpd_seq, + dccp_rsk(req)->dreq_isr)) { struct dccp_request_sock *dreq = dccp_rsk(req); dccp_pr_debug("Retransmitted REQUEST\n"); /* Send another RESPONSE packet */ dccp_set_seqno(&dreq->dreq_iss, dreq->dreq_iss + 1); - dccp_set_seqno(&dreq->dreq_isr, DCCP_SKB_CB(skb)->dccpd_seq); + dccp_set_seqno(&dreq->dreq_isr, + DCCP_SKB_CB(skb)->dccpd_seq); req->rsk_ops->rtx_syn_ack(sk, req, NULL); } /* Network Duplicate, discard packet */ @@ -181,7 +188,8 @@ struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb, /* Invalid ACK */ if (DCCP_SKB_CB(skb)->dccpd_ack_seq != dccp_rsk(req)->dreq_iss) { - dccp_pr_debug("Invalid ACK number: ack_seq=%llu, dreq_iss=%llu\n", + dccp_pr_debug("Invalid ACK number: ack_seq=%llu, " + "dreq_iss=%llu\n", (unsigned long long) DCCP_SKB_CB(skb)->dccpd_ack_seq, (unsigned long long) @@ -223,7 +231,8 @@ int dccp_child_process(struct sock *parent, struct sock *child, const int state = child->sk_state; if (!sock_owned_by_user(child)) { - ret = dccp_rcv_state_process(child, skb, dccp_hdr(skb), skb->len); + ret = dccp_rcv_state_process(child, skb, dccp_hdr(skb), + skb->len); /* Wakeup parent, send SIGIO */ if (state == DCCP_RESPOND && child->sk_state != state) diff --git a/net/dccp/options.c b/net/dccp/options.c index 5bf997683a16..68d6614edcf1 100644 --- a/net/dccp/options.c +++ b/net/dccp/options.c @@ -59,14 +59,15 @@ int dccp_parse_options(struct sock *sk, struct sk_buff *skb) { struct dccp_sock *dp = dccp_sk(sk); #ifdef DCCP_DEBUG - const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? "CLIENT rx opt: " : - "server rx opt: "; + const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? + "CLIENT rx opt: " : "server rx opt: "; #endif const struct dccp_hdr *dh = dccp_hdr(skb); const u8 pkt_type = DCCP_SKB_CB(skb)->dccpd_type; unsigned char *options = (unsigned char *)dh + dccp_hdr_len(skb); unsigned char *opt_ptr = options; - const unsigned char *opt_end = (unsigned char *)dh + (dh->dccph_doff * 4); + const unsigned char *opt_end = (unsigned char *)dh + + (dh->dccph_doff * 4); struct dccp_options_received *opt_recv = &dp->dccps_options_received; unsigned char opt, len; unsigned char *value; @@ -106,7 +107,8 @@ int dccp_parse_options(struct sock *sk, struct sk_buff *skb) goto out_invalid_option; opt_recv->dccpor_ndp = dccp_decode_value_var(value, len); - dccp_pr_debug("%sNDP count=%d\n", debug_prefix, opt_recv->dccpor_ndp); + dccp_pr_debug("%sNDP count=%d\n", debug_prefix, + opt_recv->dccpor_ndp); break; case DCCPO_ACK_VECTOR_0: if (len > DCCP_MAX_ACK_VECTOR_LEN) @@ -124,8 +126,9 @@ int dccp_parse_options(struct sock *sk, struct sk_buff *skb) DCCP_SKB_CB(skb)->dccpd_ack_seq); dccp_ackvector_print(DCCP_SKB_CB(skb)->dccpd_ack_seq, value, len); - dccp_ackpkts_check_rcv_ackvector(dp->dccps_hc_rx_ackpkts, sk, - DCCP_SKB_CB(skb)->dccpd_ack_seq, + dccp_ackpkts_check_rcv_ackvector(dp->dccps_hc_rx_ackpkts, + sk, + DCCP_SKB_CB(skb)->dccpd_ack_seq, len, value); break; case DCCPO_TIMESTAMP: @@ -148,15 +151,21 @@ int dccp_parse_options(struct sock *sk, struct sk_buff *skb) opt_recv->dccpor_timestamp_echo = ntohl(*(u32 *)value); - dccp_pr_debug("%sTIMESTAMP_ECHO=%u, len=%d, ackno=%llu, diff=%u\n", - debug_prefix, opt_recv->dccpor_timestamp_echo, + dccp_pr_debug("%sTIMESTAMP_ECHO=%u, len=%d, ackno=%llu, " + "diff=%u\n", + debug_prefix, + opt_recv->dccpor_timestamp_echo, len + 2, (unsigned long long) DCCP_SKB_CB(skb)->dccpd_ack_seq, - tcp_time_stamp - opt_recv->dccpor_timestamp_echo); - - opt_recv->dccpor_elapsed_time = dccp_decode_value_var(value + 4, len - 4); - dccp_pr_debug("%sTIMESTAMP_ECHO ELAPSED_TIME=%d\n", debug_prefix, + (tcp_time_stamp - + opt_recv->dccpor_timestamp_echo)); + + opt_recv->dccpor_elapsed_time = + dccp_decode_value_var(value + 4, + len - 4); + dccp_pr_debug("%sTIMESTAMP_ECHO ELAPSED_TIME=%d\n", + debug_prefix, opt_recv->dccpor_elapsed_time); break; case DCCPO_ELAPSED_TIME: @@ -165,33 +174,41 @@ int dccp_parse_options(struct sock *sk, struct sk_buff *skb) if (pkt_type == DCCP_PKT_DATA) continue; - opt_recv->dccpor_elapsed_time = dccp_decode_value_var(value, len); + opt_recv->dccpor_elapsed_time = + dccp_decode_value_var(value, len); dccp_pr_debug("%sELAPSED_TIME=%d\n", debug_prefix, opt_recv->dccpor_elapsed_time); break; /* * From draft-ietf-dccp-spec-11.txt: * - * Option numbers 128 through 191 are for options sent from the HC- - * Sender to the HC-Receiver; option numbers 192 through 255 are for - * options sent from the HC-Receiver to the HC-Sender. + * Option numbers 128 through 191 are for + * options sent from the HC-Sender to the + * HC-Receiver; option numbers 192 through 255 + * are for options sent from the HC-Receiver to + * the HC-Sender. */ case 128 ... 191: { const u16 idx = value - options; - if (ccid_hc_rx_parse_options(dp->dccps_hc_rx_ccid, sk, opt, len, idx, value) != 0) + if (ccid_hc_rx_parse_options(dp->dccps_hc_rx_ccid, sk, + opt, len, idx, + value) != 0) goto out_invalid_option; } break; case 192 ... 255: { const u16 idx = value - options; - if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk, opt, len, idx, value) != 0) + if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk, + opt, len, idx, + value) != 0) goto out_invalid_option; } break; default: - pr_info("DCCP(%p): option %d(len=%d) not implemented, ignoring\n", + pr_info("DCCP(%p): option %d(len=%d) not " + "implemented, ignoring\n", sk, opt, len); break; } @@ -231,7 +248,8 @@ void dccp_insert_option(struct sock *sk, struct sk_buff *skb, unsigned char *to; if (DCCP_SKB_CB(skb)->dccpd_opt_len + len + 2 > DCCP_MAX_OPT_LEN) { - LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to insert %d option!\n", option); + LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to insert " + "%d option!\n", option); return; } @@ -287,8 +305,8 @@ void dccp_insert_option_elapsed_time(struct sock *sk, { #ifdef DCCP_DEBUG struct dccp_sock *dp = dccp_sk(sk); - const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? "CLIENT TX opt: " : - "server TX opt: "; + const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? + "CLIENT TX opt: " : "server TX opt: "; #endif const int elapsed_time_len = dccp_elapsed_time_len(elapsed_time); const int len = 2 + elapsed_time_len; @@ -299,7 +317,8 @@ void dccp_insert_option_elapsed_time(struct sock *sk, return; if (DCCP_SKB_CB(skb)->dccpd_opt_len + len > DCCP_MAX_OPT_LEN) { - LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to insert elapsed time!\n"); + LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to " + "insert elapsed time!\n"); return; } @@ -323,8 +342,8 @@ static void dccp_insert_option_ack_vector(struct sock *sk, struct sk_buff *skb) { struct dccp_sock *dp = dccp_sk(sk); #ifdef DCCP_DEBUG - const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? "CLIENT TX opt: " : - "server TX opt: "; + const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? + "CLIENT TX opt: " : "server TX opt: "; #endif struct dccp_ackpkts *ap = dp->dccps_hc_rx_ackpkts; int len = ap->dccpap_buf_vector_len + 2; @@ -335,7 +354,8 @@ static void dccp_insert_option_ack_vector(struct sock *sk, struct sk_buff *skb) dccp_insert_option_elapsed_time(sk, skb, elapsed_time); if (DCCP_SKB_CB(skb)->dccpd_opt_len + len > DCCP_MAX_OPT_LEN) { - LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to insert ACK Vector!\n"); + LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to " + "insert ACK Vector!\n"); return; } @@ -360,7 +380,8 @@ static void dccp_insert_option_ack_vector(struct sock *sk, struct sk_buff *skb) /* Check if buf_head wraps */ if (ap->dccpap_buf_head + len > ap->dccpap_buf_len) { - const unsigned int tailsize = ap->dccpap_buf_len - ap->dccpap_buf_head; + const unsigned int tailsize = (ap->dccpap_buf_len - + ap->dccpap_buf_head); memcpy(to, from, tailsize); to += tailsize; @@ -375,8 +396,8 @@ static void dccp_insert_option_ack_vector(struct sock *sk, struct sk_buff *skb) * For each acknowledgement it sends, the HC-Receiver will add an * acknowledgement record. ack_seqno will equal the HC-Receiver * sequence number it used for the ack packet; ack_ptr will equal - * buf_head; ack_ackno will equal buf_ackno; and ack_nonce will equal - * buf_nonce. + * buf_head; ack_ackno will equal buf_ackno; and ack_nonce will + * equal buf_nonce. * * This implemention uses just one ack record for now. */ @@ -386,33 +407,38 @@ static void dccp_insert_option_ack_vector(struct sock *sk, struct sk_buff *skb) ap->dccpap_ack_nonce = ap->dccpap_buf_nonce; ap->dccpap_ack_vector_len = ap->dccpap_buf_vector_len; - dccp_pr_debug("%sACK Vector 0, len=%d, ack_seqno=%llu, ack_ackno=%llu\n", + dccp_pr_debug("%sACK Vector 0, len=%d, ack_seqno=%llu, " + "ack_ackno=%llu\n", debug_prefix, ap->dccpap_ack_vector_len, (unsigned long long) ap->dccpap_ack_seqno, (unsigned long long) ap->dccpap_ack_ackno); } -static inline void dccp_insert_option_timestamp(struct sock *sk, struct sk_buff *skb) +static inline void dccp_insert_option_timestamp(struct sock *sk, + struct sk_buff *skb) { const u32 now = htonl(tcp_time_stamp); dccp_insert_option(sk, skb, DCCPO_TIMESTAMP, &now, sizeof(now)); } -static void dccp_insert_option_timestamp_echo(struct sock *sk, struct sk_buff *skb) +static void dccp_insert_option_timestamp_echo(struct sock *sk, + struct sk_buff *skb) { struct dccp_sock *dp = dccp_sk(sk); #ifdef DCCP_DEBUG - const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? "CLIENT TX opt: " : - "server TX opt: "; + const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? + "CLIENT TX opt: " : "server TX opt: "; #endif u32 tstamp_echo; - const u32 elapsed_time = jiffies_to_usecs(jiffies - dp->dccps_timestamp_time) / 10; + const u32 elapsed_time = jiffies_to_usecs(jiffies - + dp->dccps_timestamp_time) / 10; const int elapsed_time_len = dccp_elapsed_time_len(elapsed_time); const int len = 6 + elapsed_time_len; unsigned char *to; if (DCCP_SKB_CB(skb)->dccpd_opt_len + len > DCCP_MAX_OPT_LEN) { - LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to insert timestamp echo!\n"); + LIMIT_NETDEBUG(KERN_INFO "DCCP: packet too small to insert " + "timestamp echo!\n"); return; } @@ -447,7 +473,8 @@ void dccp_insert_options(struct sock *sk, struct sk_buff *skb) if (!dccp_packet_without_ack(skb)) { if (dp->dccps_options.dccpo_send_ack_vector && - dp->dccps_hc_rx_ackpkts->dccpap_buf_ackno != DCCP_MAX_SEQNO + 1) + (dp->dccps_hc_rx_ackpkts->dccpap_buf_ackno != + DCCP_MAX_SEQNO + 1)) dccp_insert_option_ack_vector(sk, skb); dccp_insert_option_timestamp(sk, skb); @@ -480,12 +507,16 @@ struct dccp_ackpkts *dccp_ackpkts_alloc(unsigned int len, int priority) #ifdef DCCP_DEBUG memset(ap->dccpap_buf, 0xFF, len); #endif - ap->dccpap_buf_len = len; - ap->dccpap_buf_head = ap->dccpap_buf_tail = ap->dccpap_buf_len - 1; - ap->dccpap_buf_ackno = ap->dccpap_ack_ackno = ap->dccpap_ack_seqno = DCCP_MAX_SEQNO + 1; - ap->dccpap_buf_nonce = ap->dccpap_buf_nonce = 0; - ap->dccpap_ack_ptr = 0; - ap->dccpap_time = 0; + ap->dccpap_buf_len = len; + ap->dccpap_buf_head = + ap->dccpap_buf_tail = + ap->dccpap_buf_len - 1; + ap->dccpap_buf_ackno = + ap->dccpap_ack_ackno = + ap->dccpap_ack_seqno = DCCP_MAX_SEQNO + 1; + ap->dccpap_buf_nonce = ap->dccpap_buf_nonce = 0; + ap->dccpap_ack_ptr = 0; + ap->dccpap_time = 0; ap->dccpap_buf_vector_len = ap->dccpap_ack_vector_len = 0; } @@ -567,15 +598,16 @@ int dccp_ackpkts_add(struct dccp_ackpkts *ap, u64 ackno, u8 state) * * From Appendix A: * - * Of course, the circular buffer may overflow, either when the HC- - * Sender is sending data at a very high rate, when the HC-Receiver's - * acknowledgements are not reaching the HC-Sender, or when the HC- - * Sender is forgetting to acknowledge those acks (so the HC-Receiver - * is unable to clean up old state). In this case, the HC-Receiver - * should either compress the buffer (by increasing run lengths when - * possible), transfer its state to a larger buffer, or, as a last - * resort, drop all received packets, without processing them - * whatsoever, until its buffer shrinks again. + * Of course, the circular buffer may overflow, either when the + * HC-Sender is sending data at a very high rate, when the + * HC-Receiver's acknowledgements are not reaching the HC-Sender, + * or when the HC-Sender is forgetting to acknowledge those acks + * (so the HC-Receiver is unable to clean up old state). In this + * case, the HC-Receiver should either compress the buffer (by + * increasing run lengths when possible), transfer its state to + * a larger buffer, or, as a last resort, drop all received + * packets, without processing them whatsoever, until its buffer + * shrinks again. */ /* See if this is the first ackno being inserted */ @@ -583,15 +615,17 @@ int dccp_ackpkts_add(struct dccp_ackpkts *ap, u64 ackno, u8 state) ap->dccpap_buf[ap->dccpap_buf_head] = state; ap->dccpap_buf_vector_len = 1; } else if (after48(ackno, ap->dccpap_buf_ackno)) { - const u64 delta = dccp_delta_seqno(ap->dccpap_buf_ackno, ackno); + const u64 delta = dccp_delta_seqno(ap->dccpap_buf_ackno, + ackno); /* - * Look if the state of this packet is the same as the previous ackno - * and if so if we can bump the head len. + * Look if the state of this packet is the same as the + * previous ackno and if so if we can bump the head len. */ if (delta == 1 && dccp_ackpkts_state(ap, ap->dccpap_buf_head) == state && - dccp_ackpkts_len(ap, ap->dccpap_buf_head) < DCCP_ACKPKTS_LEN_MASK) + (dccp_ackpkts_len(ap, ap->dccpap_buf_head) < + DCCP_ACKPKTS_LEN_MASK)) ap->dccpap_buf[ap->dccpap_buf_head]++; else if (dccp_ackpkts_set_buf_head_state(ap, delta, state)) return -ENOBUFS; @@ -599,9 +633,10 @@ int dccp_ackpkts_add(struct dccp_ackpkts *ap, u64 ackno, u8 state) /* * A.1.2. Old Packets * - * When a packet with Sequence Number S arrives, and S <= buf_ackno, - * the HC-Receiver will scan the table for the byte corresponding to S. - * (Indexing structures could reduce the complexity of this scan.) + * When a packet with Sequence Number S arrives, and + * S <= buf_ackno, the HC-Receiver will scan the table + * for the byte corresponding to S. (Indexing structures + * could reduce the complexity of this scan.) */ u64 delta = dccp_delta_seqno(ackno, ap->dccpap_buf_ackno); unsigned int index = ap->dccpap_buf_head; @@ -610,11 +645,12 @@ int dccp_ackpkts_add(struct dccp_ackpkts *ap, u64 ackno, u8 state) const u8 len = dccp_ackpkts_len(ap, index); const u8 state = dccp_ackpkts_state(ap, index); /* - * valid packets not yet in dccpap_buf have a reserved entry, with - * a len equal to 0 + * valid packets not yet in dccpap_buf have a reserved + * entry, with a len equal to 0. */ if (state == DCCP_ACKPKTS_STATE_NOT_RECEIVED && - len == 0 && delta == 0) { /* Found our reserved seat! */ + len == 0 && delta == 0) { /* Found our + reserved seat! */ dccp_pr_debug("Found %llu reserved seat!\n", (unsigned long long) ackno); ap->dccpap_buf[index] = state; @@ -639,13 +675,14 @@ out: out_duplicate: /* Duplicate packet */ - dccp_pr_debug("Received a dup or already considered lost packet: %llu\n", - (unsigned long long) ackno); + dccp_pr_debug("Received a dup or already considered lost " + "packet: %llu\n", (unsigned long long) ackno); return -EILSEQ; } #ifdef DCCP_DEBUG -void dccp_ackvector_print(const u64 ackno, const unsigned char *vector, int len) +void dccp_ackvector_print(const u64 ackno, const unsigned char *vector, + int len) { if (!dccp_debug) return; @@ -678,8 +715,9 @@ static void dccp_ackpkts_trow_away_ack_record(struct dccp_ackpkts *ap) * As we're keeping track of the ack vector size * (dccpap_buf_vector_len) and the sent ack vector size * (dccpap_ack_vector_len) we don't need dccpap_buf_tail at all, but - * keep this code here as in the future we'll implement a vector of ack - * records, as suggested in draft-ietf-dccp-spec-11.txt Appendix A. -acme + * keep this code here as in the future we'll implement a vector of + * ack records, as suggested in draft-ietf-dccp-spec-11.txt + * Appendix A. -acme */ #if 0 ap->dccpap_buf_tail = ap->dccpap_ack_ptr + 1; @@ -699,10 +737,11 @@ void dccp_ackpkts_check_rcv_ackno(struct dccp_ackpkts *ap, struct sock *sk, if (ackno == ap->dccpap_ack_seqno) { #ifdef DCCP_DEBUG struct dccp_sock *dp = dccp_sk(sk); - const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? "CLIENT rx ack: " : - "server rx ack: "; + const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? + "CLIENT rx ack: " : "server rx ack: "; #endif - dccp_pr_debug("%sACK packet 0, len=%d, ack_seqno=%llu, ack_ackno=%llu, ACKED!\n", + dccp_pr_debug("%sACK packet 0, len=%d, ack_seqno=%llu, " + "ack_ackno=%llu, ACKED!\n", debug_prefix, 1, (unsigned long long) ap->dccpap_ack_seqno, (unsigned long long) ap->dccpap_ack_ackno); @@ -722,20 +761,21 @@ static void dccp_ackpkts_check_rcv_ackvector(struct dccp_ackpkts *ap, if (ap->dccpap_ack_seqno == DCCP_MAX_SEQNO + 1) return; /* - * We're in the receiver half connection, so if the received an ACK vector - * ackno (e.g. 50) before dccpap_ack_seqno (e.g. 52), we're not interested. + * We're in the receiver half connection, so if the received an ACK + * vector ackno (e.g. 50) before dccpap_ack_seqno (e.g. 52), we're + * not interested. * * Extra explanation with example: * * if we received an ACK vector with ackno 50, it can only be acking * 50, 49, 48, etc, not 52 (the seqno for the ACK vector we sent). */ - // dccp_pr_debug("is %llu < %llu? ", ackno, ap->dccpap_ack_seqno); + /* dccp_pr_debug("is %llu < %llu? ", ackno, ap->dccpap_ack_seqno); */ if (before48(ackno, ap->dccpap_ack_seqno)) { - // dccp_pr_debug_cat("yes\n"); + /* dccp_pr_debug_cat("yes\n"); */ return; } - // dccp_pr_debug_cat("no\n"); + /* dccp_pr_debug_cat("no\n"); */ i = len; while (i--) { @@ -744,18 +784,25 @@ static void dccp_ackpkts_check_rcv_ackvector(struct dccp_ackpkts *ap, dccp_set_seqno(&ackno_end_rl, ackno - rl); - // dccp_pr_debug("is %llu <= %llu <= %llu? ", ackno_end_rl, ap->dccpap_ack_seqno, ackno); + /* + * dccp_pr_debug("is %llu <= %llu <= %llu? ", ackno_end_rl, + * ap->dccpap_ack_seqno, ackno); + */ if (between48(ap->dccpap_ack_seqno, ackno_end_rl, ackno)) { - const u8 state = (*vector & DCCP_ACKPKTS_STATE_MASK) >> 6; - // dccp_pr_debug_cat("yes\n"); + const u8 state = (*vector & + DCCP_ACKPKTS_STATE_MASK) >> 6; + /* dccp_pr_debug_cat("yes\n"); */ if (state != DCCP_ACKPKTS_STATE_NOT_RECEIVED) { #ifdef DCCP_DEBUG struct dccp_sock *dp = dccp_sk(sk); - const char *debug_prefix = dp->dccps_role == DCCP_ROLE_CLIENT ? "CLIENT rx ack: " : - "server rx ack: "; + const char *debug_prefix = + dp->dccps_role == DCCP_ROLE_CLIENT ? + "CLIENT rx ack: " : "server rx ack: "; #endif - dccp_pr_debug("%sACK vector 0, len=%d, ack_seqno=%llu, ack_ackno=%llu, ACKED!\n", + dccp_pr_debug("%sACK vector 0, len=%d, " + "ack_seqno=%llu, ack_ackno=%llu, " + "ACKED!\n", debug_prefix, len, (unsigned long long) ap->dccpap_ack_seqno, @@ -764,13 +811,13 @@ static void dccp_ackpkts_check_rcv_ackvector(struct dccp_ackpkts *ap, dccp_ackpkts_trow_away_ack_record(ap); } /* - * If dccpap_ack_seqno was not received, no problem we'll - * send another ACK vector. + * If dccpap_ack_seqno was not received, no problem + * we'll send another ACK vector. */ ap->dccpap_ack_seqno = DCCP_MAX_SEQNO + 1; break; } - // dccp_pr_debug_cat("no\n"); + /* dccp_pr_debug_cat("no\n"); */ dccp_set_seqno(&ackno, ackno_end_rl - 1); ++vector; diff --git a/net/dccp/output.c b/net/dccp/output.c index 50292c0605fb..dcc061bed924 100644 --- a/net/dccp/output.c +++ b/net/dccp/output.c @@ -40,13 +40,13 @@ int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb) /* XXX For now we're using only 48 bits sequence numbers */ const int dccp_header_size = sizeof(*dh) + sizeof(struct dccp_hdr_ext) + - dccp_packet_hdr_len(dcb->dccpd_type); + dccp_packet_hdr_len(dcb->dccpd_type); int err, set_ack = 1; u64 ackno = dp->dccps_gsr; /* - * FIXME: study DCCP_PKT_SYNC[ACK] to see what is the right thing - * to do here... + * FIXME: study DCCP_PKT_SYNC[ACK] to see what is the right + * thing to do here... */ dccp_inc_seqno(&dp->dccps_gss); @@ -65,7 +65,9 @@ int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb) skb->h.raw = skb_push(skb, dccp_header_size); dh = dccp_hdr(skb); - /* Data packets are not cloned as they are never retransmitted */ + /* + * Data packets are not cloned as they are never retransmitted + */ if (skb_cloned(skb)) skb_set_owner_w(skb, sk); @@ -86,10 +88,12 @@ int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb) switch (dcb->dccpd_type) { case DCCP_PKT_REQUEST: - dccp_hdr_request(skb)->dccph_req_service = dcb->dccpd_service; + dccp_hdr_request(skb)->dccph_req_service = + dcb->dccpd_service; break; case DCCP_PKT_RESET: - dccp_hdr_reset(skb)->dccph_reset_code = dcb->dccpd_reset_code; + dccp_hdr_reset(skb)->dccph_reset_code = + dcb->dccpd_reset_code; break; } @@ -123,10 +127,13 @@ unsigned int dccp_sync_mss(struct sock *sk, u32 pmtu) int mss_now; /* - * FIXME: we really should be using the af_specific thing to support IPv6. - * mss_now = pmtu - tp->af_specific->net_header_len - sizeof(struct dccp_hdr) - sizeof(struct dccp_hdr_ext); + * FIXME: we really should be using the af_specific thing to support + * IPv6. + * mss_now = pmtu - tp->af_specific->net_header_len - + * sizeof(struct dccp_hdr) - sizeof(struct dccp_hdr_ext); */ - mss_now = pmtu - sizeof(struct iphdr) - sizeof(struct dccp_hdr) - sizeof(struct dccp_hdr_ext); + mss_now = pmtu - sizeof(struct iphdr) - sizeof(struct dccp_hdr) - + sizeof(struct dccp_hdr_ext); /* Now subtract optional transport overhead */ mss_now -= dp->dccps_ext_header_len; @@ -223,7 +230,8 @@ struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst, dh->dccph_sport = inet_sk(sk)->sport; dh->dccph_dport = inet_rsk(req)->rmt_port; - dh->dccph_doff = (dccp_header_size + DCCP_SKB_CB(skb)->dccpd_opt_len) / 4; + dh->dccph_doff = (dccp_header_size + + DCCP_SKB_CB(skb)->dccpd_opt_len) / 4; dh->dccph_type = DCCP_PKT_RESPONSE; dh->dccph_x = 1; dccp_hdr_set_seq(dh, dccp_rsk(req)->dreq_iss); @@ -271,7 +279,8 @@ struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst, dh->dccph_sport = inet_sk(sk)->sport; dh->dccph_dport = inet_sk(sk)->dport; - dh->dccph_doff = (dccp_header_size + DCCP_SKB_CB(skb)->dccpd_opt_len) / 4; + dh->dccph_doff = (dccp_header_size + + DCCP_SKB_CB(skb)->dccpd_opt_len) / 4; dh->dccph_type = DCCP_PKT_RESET; dh->dccph_x = 1; dccp_hdr_set_seq(dh, dp->dccps_gss); @@ -348,7 +357,9 @@ void dccp_send_ack(struct sock *sk) if (skb == NULL) { inet_csk_schedule_ack(sk); inet_csk(sk)->icsk_ack.ato = TCP_ATO_MIN; - inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, TCP_DELACK_MAX, TCP_RTO_MAX); + inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, + TCP_DELACK_MAX, + DCCP_RTO_MAX); return; } @@ -416,8 +427,10 @@ void dccp_send_sync(struct sock *sk, u64 seq) dccp_transmit_skb(sk, skb); } -/* Send a DCCP_PKT_CLOSE/CLOSEREQ. The caller locks the socket for us. This cannot be - * allowed to fail queueing a DCCP_PKT_CLOSE/CLOSEREQ frame under any circumstances. +/* + * Send a DCCP_PKT_CLOSE/CLOSEREQ. The caller locks the socket for us. This + * cannot be allowed to fail queueing a DCCP_PKT_CLOSE/CLOSEREQ frame under + * any circumstances. */ void dccp_send_close(struct sock *sk) { @@ -435,7 +448,8 @@ void dccp_send_close(struct sock *sk) /* Reserve space for headers and prepare control bits. */ skb_reserve(skb, sk->sk_prot->max_header); skb->csum = 0; - DCCP_SKB_CB(skb)->dccpd_type = dp->dccps_role == DCCP_ROLE_CLIENT ? DCCP_PKT_CLOSE : DCCP_PKT_CLOSEREQ; + DCCP_SKB_CB(skb)->dccpd_type = dp->dccps_role == DCCP_ROLE_CLIENT ? + DCCP_PKT_CLOSE : DCCP_PKT_CLOSEREQ; skb_set_owner_w(skb, sk); dccp_transmit_skb(sk, skb); diff --git a/net/dccp/packet_history.c b/net/dccp/packet_history.c index 6b414898f0c4..2d9ef5ae0bf6 100644 --- a/net/dccp/packet_history.c +++ b/net/dccp/packet_history.c @@ -55,7 +55,7 @@ struct dccp_rx_hist *dccp_rx_hist_new(const char *name) sprintf(slab_name, dccp_rx_hist_mask, name); hist->dccprxh_slab = kmem_cache_create(slab_name, - sizeof(struct dccp_rx_hist_entry), + sizeof(struct dccp_rx_hist_entry), 0, SLAB_HWCACHE_ALIGN, NULL, NULL); if (hist->dccprxh_slab == NULL) @@ -128,7 +128,7 @@ struct dccp_tx_hist *dccp_tx_hist_new(const char *name) sprintf(slab_name, dccp_tx_hist_mask, name); hist->dccptxh_slab = kmem_cache_create(slab_name, - sizeof(struct dccp_tx_hist_entry), + sizeof(struct dccp_tx_hist_entry), 0, SLAB_HWCACHE_ALIGN, NULL, NULL); if (hist->dccptxh_slab == NULL) @@ -156,8 +156,8 @@ void dccp_tx_hist_delete(struct dccp_tx_hist *hist) EXPORT_SYMBOL_GPL(dccp_tx_hist_delete); -struct dccp_tx_hist_entry *dccp_tx_hist_find_entry(const struct list_head *list, - const u64 seq) +struct dccp_tx_hist_entry * + dccp_tx_hist_find_entry(const struct list_head *list, const u64 seq) { struct dccp_tx_hist_entry *packet = NULL, *entry; @@ -172,7 +172,8 @@ struct dccp_tx_hist_entry *dccp_tx_hist_find_entry(const struct list_head *list, EXPORT_SYMBOL_GPL(dccp_tx_hist_find_entry); -void dccp_tx_hist_purge_older(struct dccp_tx_hist *hist, struct list_head *list, +void dccp_tx_hist_purge_older(struct dccp_tx_hist *hist, + struct list_head *list, struct dccp_tx_hist_entry *packet) { struct dccp_tx_hist_entry *next; diff --git a/net/dccp/packet_history.h b/net/dccp/packet_history.h index 0056525a656c..489fff45ccdf 100644 --- a/net/dccp/packet_history.h +++ b/net/dccp/packet_history.h @@ -115,7 +115,8 @@ extern void dccp_tx_hist_purge_older(struct dccp_tx_hist *hist, extern void dccp_tx_hist_purge(struct dccp_tx_hist *hist, struct list_head *list); -static inline struct dccp_tx_hist_entry *dccp_tx_hist_head(struct list_head *list) +static inline struct dccp_tx_hist_entry * + dccp_tx_hist_head(struct list_head *list) { struct dccp_tx_hist_entry *head = NULL; @@ -163,7 +164,8 @@ static inline void dccp_rx_hist_add_entry(struct list_head *list, list_add(&entry->dccphrx_node, list); } -static inline struct dccp_rx_hist_entry *dccp_rx_hist_head(struct list_head *list) +static inline struct dccp_rx_hist_entry * + dccp_rx_hist_head(struct list_head *list) { struct dccp_rx_hist_entry *head = NULL; diff --git a/net/dccp/proto.c b/net/dccp/proto.c index 877c1e0e3c48..46dd489f66cf 100644 --- a/net/dccp/proto.c +++ b/net/dccp/proto.c @@ -255,12 +255,16 @@ int dccp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, /* FIXME */ #if 0 - /* Are we at urgent data? Stop if we have read anything or have SIGURG pending. */ + /* + * Are we at urgent data? Stop if we have read anything or + * have SIGURG pending. + */ if (tp->urg_data && tp->urg_seq == *seq) { if (copied) break; if (signal_pending(current)) { - copied = timeo ? sock_intr_errno(timeo) : -EAGAIN; + copied = timeo ? sock_intr_errno(timeo) : + -EAGAIN; break; } } @@ -285,7 +289,8 @@ int dccp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, dccp_pr_debug("found fin ok!\n"); goto found_fin_ok; } - dccp_pr_debug("packet_type=%s\n", dccp_packet_name(dh->dccph_type)); + dccp_pr_debug("packet_type=%s\n", + dccp_packet_name(dh->dccph_type)); BUG_TRAP(flags & MSG_PEEK); skb = skb->next; } while (skb != (struct sk_buff *)&sk->sk_receive_queue); @@ -439,16 +444,16 @@ out: } static const unsigned char dccp_new_state[] = { - /* current state: new state: action: */ - [0] = DCCP_CLOSED, - [DCCP_OPEN] = DCCP_CLOSING | DCCP_ACTION_FIN, - [DCCP_REQUESTING] = DCCP_CLOSED, - [DCCP_PARTOPEN] = DCCP_CLOSING | DCCP_ACTION_FIN, - [DCCP_LISTEN] = DCCP_CLOSED, - [DCCP_RESPOND] = DCCP_CLOSED, - [DCCP_CLOSING] = DCCP_CLOSED, - [DCCP_TIME_WAIT] = DCCP_CLOSED, - [DCCP_CLOSED] = DCCP_CLOSED, + /* current state: new state: action: */ + [0] = DCCP_CLOSED, + [DCCP_OPEN] = DCCP_CLOSING | DCCP_ACTION_FIN, + [DCCP_REQUESTING] = DCCP_CLOSED, + [DCCP_PARTOPEN] = DCCP_CLOSING | DCCP_ACTION_FIN, + [DCCP_LISTEN] = DCCP_CLOSED, + [DCCP_RESPOND] = DCCP_CLOSED, + [DCCP_CLOSING] = DCCP_CLOSED, + [DCCP_TIME_WAIT] = DCCP_CLOSED, + [DCCP_CLOSED] = DCCP_CLOSED, }; static int dccp_close_state(struct sock *sk) @@ -541,7 +546,8 @@ struct proto_ops inet_dccp_ops = { .getname = inet_getname, .poll = sock_no_poll, .ioctl = inet_ioctl, - .listen = inet_dccp_listen, /* FIXME: work on inet_listen to rename it to sock_common_listen */ + /* FIXME: work on inet_listen to rename it to sock_common_listen */ + .listen = inet_dccp_listen, .shutdown = inet_shutdown, .setsockopt = sock_common_setsockopt, .getsockopt = sock_common_getsockopt, @@ -638,10 +644,10 @@ static int __init dccp_init(void) if (rc) goto out; - dccp_hashinfo.bind_bucket_cachep = kmem_cache_create("dccp_bind_bucket", - sizeof(struct inet_bind_bucket), - 0, SLAB_HWCACHE_ALIGN, - NULL, NULL); + dccp_hashinfo.bind_bucket_cachep = + kmem_cache_create("dccp_bind_bucket", + sizeof(struct inet_bind_bucket), 0, + SLAB_HWCACHE_ALIGN, NULL, NULL); if (!dccp_hashinfo.bind_bucket_cachep) goto out_proto_unregister; @@ -657,14 +663,16 @@ static int __init dccp_init(void) goal = num_physpages >> (23 - PAGE_SHIFT); if (thash_entries) - goal = (thash_entries * sizeof(struct inet_ehash_bucket)) >> PAGE_SHIFT; + goal = (thash_entries * + sizeof(struct inet_ehash_bucket)) >> PAGE_SHIFT; for (ehash_order = 0; (1UL << ehash_order) < goal; ehash_order++) ; do { dccp_hashinfo.ehash_size = (1UL << ehash_order) * PAGE_SIZE / sizeof(struct inet_ehash_bucket); dccp_hashinfo.ehash_size >>= 1; - while (dccp_hashinfo.ehash_size & (dccp_hashinfo.ehash_size - 1)) + while (dccp_hashinfo.ehash_size & + (dccp_hashinfo.ehash_size - 1)) dccp_hashinfo.ehash_size--; dccp_hashinfo.ehash = (struct inet_ehash_bucket *) __get_free_pages(GFP_ATOMIC, ehash_order); @@ -686,7 +694,8 @@ static int __init dccp_init(void) do { dccp_hashinfo.bhash_size = (1UL << bhash_order) * PAGE_SIZE / sizeof(struct inet_bind_hashbucket); - if ((dccp_hashinfo.bhash_size > (64 * 1024)) && bhash_order > 0) + if ((dccp_hashinfo.bhash_size > (64 * 1024)) && + bhash_order > 0) continue; dccp_hashinfo.bhash = (struct inet_bind_hashbucket *) __get_free_pages(GFP_ATOMIC, bhash_order); diff --git a/net/dccp/timer.c b/net/dccp/timer.c index 9f1f1ab9e2b4..47b1616e6189 100644 --- a/net/dccp/timer.c +++ b/net/dccp/timer.c @@ -45,11 +45,13 @@ static int dccp_write_timeout(struct sock *sk) if (sk->sk_state == DCCP_REQUESTING || sk->sk_state == DCCP_PARTOPEN) { if (icsk->icsk_retransmits != 0) dst_negative_advice(&sk->sk_dst_cache); - retry_until = icsk->icsk_syn_retries ? : /* FIXME! */ 3 /* FIXME! sysctl_tcp_syn_retries */; + retry_until = icsk->icsk_syn_retries ? : + /* FIXME! */ 3 /* FIXME! sysctl_tcp_syn_retries */; } else { - if (icsk->icsk_retransmits >= /* FIXME! sysctl_tcp_retries1 */ 5 /* FIXME! */) { - /* NOTE. draft-ietf-tcpimpl-pmtud-01.txt requires pmtu black - hole detection. :-( + if (icsk->icsk_retransmits >= + /* FIXME! sysctl_tcp_retries1 */ 5 /* FIXME! */) { + /* NOTE. draft-ietf-tcpimpl-pmtud-01.txt requires pmtu + black hole detection. :-( It is place to make it. It is not made. I do not want to make it. It is disguisting. It does not work in any @@ -96,14 +98,17 @@ static void dccp_delack_timer(unsigned long data) /* Try again later. */ icsk->icsk_ack.blocked = 1; NET_INC_STATS_BH(LINUX_MIB_DELAYEDACKLOCKED); - sk_reset_timer(sk, &icsk->icsk_delack_timer, jiffies + TCP_DELACK_MIN); + sk_reset_timer(sk, &icsk->icsk_delack_timer, + jiffies + TCP_DELACK_MIN); goto out; } - if (sk->sk_state == DCCP_CLOSED || !(icsk->icsk_ack.pending & ICSK_ACK_TIMER)) + if (sk->sk_state == DCCP_CLOSED || + !(icsk->icsk_ack.pending & ICSK_ACK_TIMER)) goto out; if (time_after(icsk->icsk_ack.timeout, jiffies)) { - sk_reset_timer(sk, &icsk->icsk_delack_timer, icsk->icsk_ack.timeout); + sk_reset_timer(sk, &icsk->icsk_delack_timer, + icsk->icsk_ack.timeout); goto out; } @@ -112,7 +117,8 @@ static void dccp_delack_timer(unsigned long data) if (inet_csk_ack_scheduled(sk)) { if (!icsk->icsk_ack.pingpong) { /* Delayed ACK missed: inflate ATO. */ - icsk->icsk_ack.ato = min(icsk->icsk_ack.ato << 1, icsk->icsk_rto); + icsk->icsk_ack.ato = min(icsk->icsk_ack.ato << 1, + icsk->icsk_rto); } else { /* Delayed ACK missed: leave pingpong mode and * deflate ATO. @@ -167,7 +173,7 @@ static void dccp_retransmit_timer(struct sock *sk) inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, min(icsk->icsk_rto, TCP_RESOURCE_PROBE_INTERVAL), - TCP_RTO_MAX); + DCCP_RTO_MAX); goto out; } @@ -175,7 +181,8 @@ static void dccp_retransmit_timer(struct sock *sk) icsk->icsk_retransmits++; icsk->icsk_rto = min(icsk->icsk_rto << 1, DCCP_RTO_MAX); - inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, icsk->icsk_rto, TCP_RTO_MAX); + inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, icsk->icsk_rto, + DCCP_RTO_MAX); if (icsk->icsk_retransmits > 3 /* FIXME: sysctl_dccp_retries1 */) __sk_dst_reset(sk); out:; @@ -190,7 +197,8 @@ static void dccp_write_timer(unsigned long data) bh_lock_sock(sk); if (sock_owned_by_user(sk)) { /* Try again later */ - sk_reset_timer(sk, &icsk->icsk_retransmit_timer, jiffies + (HZ / 20)); + sk_reset_timer(sk, &icsk->icsk_retransmit_timer, + jiffies + (HZ / 20)); goto out; } @@ -198,7 +206,8 @@ static void dccp_write_timer(unsigned long data) goto out; if (time_after(icsk->icsk_timeout, jiffies)) { - sk_reset_timer(sk, &icsk->icsk_retransmit_timer, icsk->icsk_timeout); + sk_reset_timer(sk, &icsk->icsk_retransmit_timer, + icsk->icsk_timeout); goto out; } @@ -220,7 +229,8 @@ out: */ static void dccp_response_timer(struct sock *sk) { - inet_csk_reqsk_queue_prune(sk, TCP_SYNQ_INTERVAL, DCCP_TIMEOUT_INIT, DCCP_RTO_MAX); + inet_csk_reqsk_queue_prune(sk, TCP_SYNQ_INTERVAL, DCCP_TIMEOUT_INIT, + DCCP_RTO_MAX); } static void dccp_keepalive_timer(unsigned long data) -- 2.30.2