diff options
| -rw-r--r-- | sys/netinet/tcp_input.c | 26 | ||||
| -rw-r--r-- | sys/netinet/tcp_reass.c | 26 | ||||
| -rw-r--r-- | sys/netinet/tcp_syncache.c | 4 | ||||
| -rw-r--r-- | sys/netinet/tcp_var.h | 2 |
4 files changed, 23 insertions, 35 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index bf8df6a..62ccb3b 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -966,24 +966,18 @@ findpcb: * SYN appears to be valid. Create compressed TCP state * for syncache. */ - if (so->so_qlen <= so->so_qlimit) { #ifdef TCPDEBUG - if (so->so_options & SO_DEBUG) - tcp_trace(TA_INPUT, ostate, tp, - (void *)tcp_saveipgen, &tcp_savetcp, 0); + if (so->so_options & SO_DEBUG) + tcp_trace(TA_INPUT, ostate, tp, + (void *)tcp_saveipgen, &tcp_savetcp, 0); #endif - tcp_dooptions(&to, optp, optlen, TO_SYN); - if (!syncache_add(&inc, &to, th, inp, &so, m)) - goto dropunlock; - /* - * Entry added to syncache, mbuf used to - * send SYN-ACK packet. Everything unlocked - * already. - */ - return; - } - /* Catch all. Everthing that makes it down here is junk. */ - goto dropunlock; + tcp_dooptions(&to, optp, optlen, TO_SYN); + syncache_add(&inc, &to, th, inp, &so, m); + /* + * Entry added to syncache and mbuf consumed. + * Everything unlocked already by syncache_add(). + */ + return; } /* diff --git a/sys/netinet/tcp_reass.c b/sys/netinet/tcp_reass.c index bf8df6a..62ccb3b 100644 --- a/sys/netinet/tcp_reass.c +++ b/sys/netinet/tcp_reass.c @@ -966,24 +966,18 @@ findpcb: * SYN appears to be valid. Create compressed TCP state * for syncache. */ - if (so->so_qlen <= so->so_qlimit) { #ifdef TCPDEBUG - if (so->so_options & SO_DEBUG) - tcp_trace(TA_INPUT, ostate, tp, - (void *)tcp_saveipgen, &tcp_savetcp, 0); + if (so->so_options & SO_DEBUG) + tcp_trace(TA_INPUT, ostate, tp, + (void *)tcp_saveipgen, &tcp_savetcp, 0); #endif - tcp_dooptions(&to, optp, optlen, TO_SYN); - if (!syncache_add(&inc, &to, th, inp, &so, m)) - goto dropunlock; - /* - * Entry added to syncache, mbuf used to - * send SYN-ACK packet. Everything unlocked - * already. - */ - return; - } - /* Catch all. Everthing that makes it down here is junk. */ - goto dropunlock; + tcp_dooptions(&to, optp, optlen, TO_SYN); + syncache_add(&inc, &to, th, inp, &so, m); + /* + * Entry added to syncache and mbuf consumed. + * Everything unlocked already by syncache_add(). + */ + return; } /* diff --git a/sys/netinet/tcp_syncache.c b/sys/netinet/tcp_syncache.c index 6d1d1a2..881495a 100644 --- a/sys/netinet/tcp_syncache.c +++ b/sys/netinet/tcp_syncache.c @@ -832,7 +832,7 @@ failed: * consume all available buffer space if it were ACKed. By not ACKing * the data, we avoid this DoS scenario. */ -int +void syncache_add(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th, struct inpcb *inp, struct socket **lsop, struct mbuf *m) { @@ -1079,7 +1079,7 @@ done: #endif *lsop = NULL; m_freem(m); - return (1); + return; } static int diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h index 5752da9..fad4cf4 100644 --- a/sys/netinet/tcp_var.h +++ b/sys/netinet/tcp_var.h @@ -542,7 +542,7 @@ void syncache_init(void); void syncache_unreach(struct in_conninfo *, struct tcphdr *); int syncache_expand(struct in_conninfo *, struct tcpopt *, struct tcphdr *, struct socket **, struct mbuf *); -int syncache_add(struct in_conninfo *, struct tcpopt *, +void syncache_add(struct in_conninfo *, struct tcpopt *, struct tcphdr *, struct inpcb *, struct socket **, struct mbuf *); void syncache_chkrst(struct in_conninfo *, struct tcphdr *); void syncache_badack(struct in_conninfo *); |
