From 5447d4777c48218e90844fa6f6e544119075faad Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 14 Jan 2008 23:45:48 -0800 Subject: [PATCH] [NETFILTER]: nf_conntrack_sctp: basic cleanups Reindent switch cases properly, get rid of weird constructs like "!(x == y)", put logical operations on the end of the line instead of the next line, get rid of superfluous braces. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/netfilter/nf_conntrack_proto_sctp.c | 140 ++++++++++++------------ 1 file changed, 72 insertions(+), 68 deletions(-) diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index 9a5ec53b442e..689cc505bf6e 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -206,28 +206,26 @@ static int do_basic_checks(struct nf_conn *conntrack, for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) { pr_debug("Chunk Num: %d Type: %d\n", count, sch->type); - if (sch->type == SCTP_CID_INIT - || sch->type == SCTP_CID_INIT_ACK - || sch->type == SCTP_CID_SHUTDOWN_COMPLETE) { + if (sch->type == SCTP_CID_INIT || + sch->type == SCTP_CID_INIT_ACK || + sch->type == SCTP_CID_SHUTDOWN_COMPLETE) flag = 1; - } /* * Cookie Ack/Echo chunks not the first OR * Init / Init Ack / Shutdown compl chunks not the only chunks * OR zero-length. */ - if (((sch->type == SCTP_CID_COOKIE_ACK - || sch->type == SCTP_CID_COOKIE_ECHO - || flag) - && count !=0) || !sch->length) { + if (((sch->type == SCTP_CID_COOKIE_ACK || + sch->type == SCTP_CID_COOKIE_ECHO || + flag) && + count != 0) || !sch->length) { pr_debug("Basic checks failed\n"); return 1; } - if (map) { + if (map) set_bit(sch->type, (void *)map); - } } pr_debug("Basic checks passed\n"); @@ -243,39 +241,48 @@ static int new_state(enum ip_conntrack_dir dir, pr_debug("Chunk type: %d\n", chunk_type); switch (chunk_type) { - case SCTP_CID_INIT: - pr_debug("SCTP_CID_INIT\n"); - i = 0; break; - case SCTP_CID_INIT_ACK: - pr_debug("SCTP_CID_INIT_ACK\n"); - i = 1; break; - case SCTP_CID_ABORT: - pr_debug("SCTP_CID_ABORT\n"); - i = 2; break; - case SCTP_CID_SHUTDOWN: - pr_debug("SCTP_CID_SHUTDOWN\n"); - i = 3; break; - case SCTP_CID_SHUTDOWN_ACK: - pr_debug("SCTP_CID_SHUTDOWN_ACK\n"); - i = 4; break; - case SCTP_CID_ERROR: - pr_debug("SCTP_CID_ERROR\n"); - i = 5; break; - case SCTP_CID_COOKIE_ECHO: - pr_debug("SCTP_CID_COOKIE_ECHO\n"); - i = 6; break; - case SCTP_CID_COOKIE_ACK: - pr_debug("SCTP_CID_COOKIE_ACK\n"); - i = 7; break; - case SCTP_CID_SHUTDOWN_COMPLETE: - pr_debug("SCTP_CID_SHUTDOWN_COMPLETE\n"); - i = 8; break; - default: - /* Other chunks like DATA, SACK, HEARTBEAT and - its ACK do not cause a change in state */ - pr_debug("Unknown chunk type, Will stay in %s\n", - sctp_conntrack_names[cur_state]); - return cur_state; + case SCTP_CID_INIT: + pr_debug("SCTP_CID_INIT\n"); + i = 0; + break; + case SCTP_CID_INIT_ACK: + pr_debug("SCTP_CID_INIT_ACK\n"); + i = 1; + break; + case SCTP_CID_ABORT: + pr_debug("SCTP_CID_ABORT\n"); + i = 2; + break; + case SCTP_CID_SHUTDOWN: + pr_debug("SCTP_CID_SHUTDOWN\n"); + i = 3; + break; + case SCTP_CID_SHUTDOWN_ACK: + pr_debug("SCTP_CID_SHUTDOWN_ACK\n"); + i = 4; + break; + case SCTP_CID_ERROR: + pr_debug("SCTP_CID_ERROR\n"); + i = 5; + break; + case SCTP_CID_COOKIE_ECHO: + pr_debug("SCTP_CID_COOKIE_ECHO\n"); + i = 6; + break; + case SCTP_CID_COOKIE_ACK: + pr_debug("SCTP_CID_COOKIE_ACK\n"); + i = 7; + break; + case SCTP_CID_SHUTDOWN_COMPLETE: + pr_debug("SCTP_CID_SHUTDOWN_COMPLETE\n"); + i = 8; + break; + default: + /* Other chunks like DATA, SACK, HEARTBEAT and + its ACK do not cause a change in state */ + pr_debug("Unknown chunk type, Will stay in %s\n", + sctp_conntrack_names[cur_state]); + return cur_state; } pr_debug("dir: %d cur_state: %s chunk_type: %d new_state: %s\n", @@ -307,12 +314,12 @@ static int sctp_packet(struct nf_conn *conntrack, return -1; /* Check the verification tag (Sec 8.5) */ - if (!test_bit(SCTP_CID_INIT, (void *)map) - && !test_bit(SCTP_CID_SHUTDOWN_COMPLETE, (void *)map) - && !test_bit(SCTP_CID_COOKIE_ECHO, (void *)map) - && !test_bit(SCTP_CID_ABORT, (void *)map) - && !test_bit(SCTP_CID_SHUTDOWN_ACK, (void *)map) - && (sh->vtag != conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)])) { + if (!test_bit(SCTP_CID_INIT, (void *)map) && + !test_bit(SCTP_CID_SHUTDOWN_COMPLETE, (void *)map) && + !test_bit(SCTP_CID_COOKIE_ECHO, (void *)map) && + !test_bit(SCTP_CID_ABORT, (void *)map) && + !test_bit(SCTP_CID_SHUTDOWN_ACK, (void *)map) && + sh->vtag != conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)]) { pr_debug("Verification tag check failed\n"); return -1; } @@ -330,24 +337,22 @@ static int sctp_packet(struct nf_conn *conntrack, } } else if (sch->type == SCTP_CID_ABORT) { /* Sec 8.5.1 (B) */ - if (!(sh->vtag == conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)]) - && !(sh->vtag == conntrack->proto.sctp.vtag - [1 - CTINFO2DIR(ctinfo)])) { + if (sh->vtag != conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)] && + sh->vtag != conntrack->proto.sctp.vtag[1 - CTINFO2DIR(ctinfo)]) { write_unlock_bh(&sctp_lock); return -1; } } else if (sch->type == SCTP_CID_SHUTDOWN_COMPLETE) { /* Sec 8.5.1 (C) */ - if (!(sh->vtag == conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)]) - && !(sh->vtag == conntrack->proto.sctp.vtag - [1 - CTINFO2DIR(ctinfo)] - && (sch->flags & 1))) { + if (sh->vtag != conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)] && + sh->vtag != conntrack->proto.sctp.vtag[1 - CTINFO2DIR(ctinfo)] && + (sch->flags & 1)) { write_unlock_bh(&sctp_lock); return -1; } } else if (sch->type == SCTP_CID_COOKIE_ECHO) { /* Sec 8.5.1 (D) */ - if (!(sh->vtag == conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)])) { + if (sh->vtag != conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)]) { write_unlock_bh(&sctp_lock); return -1; } @@ -366,15 +371,15 @@ static int sctp_packet(struct nf_conn *conntrack, } /* If it is an INIT or an INIT ACK note down the vtag */ - if (sch->type == SCTP_CID_INIT - || sch->type == SCTP_CID_INIT_ACK) { + if (sch->type == SCTP_CID_INIT || + sch->type == SCTP_CID_INIT_ACK) { sctp_inithdr_t _inithdr, *ih; ih = skb_header_pointer(skb, offset + sizeof(sctp_chunkhdr_t), sizeof(_inithdr), &_inithdr); if (ih == NULL) { - write_unlock_bh(&sctp_lock); - return -1; + write_unlock_bh(&sctp_lock); + return -1; } pr_debug("Setting vtag %x for dir %d\n", ih->init_tag, !CTINFO2DIR(ctinfo)); @@ -389,9 +394,9 @@ static int sctp_packet(struct nf_conn *conntrack, nf_ct_refresh_acct(conntrack, ctinfo, skb, *sctp_timeouts[newconntrack]); - if (oldsctpstate == SCTP_CONNTRACK_COOKIE_ECHOED - && CTINFO2DIR(ctinfo) == IP_CT_DIR_REPLY - && newconntrack == SCTP_CONNTRACK_ESTABLISHED) { + if (oldsctpstate == SCTP_CONNTRACK_COOKIE_ECHOED && + CTINFO2DIR(ctinfo) == IP_CT_DIR_REPLY && + newconntrack == SCTP_CONNTRACK_ESTABLISHED) { pr_debug("Setting assured bit\n"); set_bit(IPS_ASSURED_BIT, &conntrack->status); nf_conntrack_event_cache(IPCT_STATUS, skb); @@ -418,11 +423,10 @@ static int sctp_new(struct nf_conn *conntrack, const struct sk_buff *skb, return 0; /* If an OOTB packet has any of these chunks discard (Sec 8.4) */ - if ((test_bit (SCTP_CID_ABORT, (void *)map)) - || (test_bit (SCTP_CID_SHUTDOWN_COMPLETE, (void *)map)) - || (test_bit (SCTP_CID_COOKIE_ACK, (void *)map))) { + if (test_bit (SCTP_CID_ABORT, (void *)map) || + test_bit (SCTP_CID_SHUTDOWN_COMPLETE, (void *)map) || + test_bit (SCTP_CID_COOKIE_ACK, (void *)map)) return 0; - } newconntrack = SCTP_CONNTRACK_MAX; for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) { -- 2.30.2