diff options
| author | Markus Friedl <markus@cvs.openbsd.org> | 2007-09-18 18:46:00 +0000 |
|---|---|---|
| committer | Markus Friedl <markus@cvs.openbsd.org> | 2007-09-18 18:46:00 +0000 |
| commit | 73ab101f302f601f84bacdb4b550ba93e28812c1 (patch) | |
| tree | 72589a53e70930b6f84cb8926a9654dc0e20e74b /sys/net/pf.c | |
| parent | 2279ba3eeae8ee58c4ede9188769224ff80a60c1 (diff) | |
allow state reuse for tcp if both sides are in FIN_WAIT_2 and a new SYN
arrives; ok dhartmei, henning, feedback aaron
Diffstat (limited to 'sys/net/pf.c')
| -rw-r--r-- | sys/net/pf.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sys/net/pf.c b/sys/net/pf.c index fdb813d8bc3..66aa25cd515 100644 --- a/sys/net/pf.c +++ b/sys/net/pf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pf.c,v 1.558 2007/09/07 20:34:10 bluhm Exp $ */ +/* $OpenBSD: pf.c,v 1.559 2007/09/18 18:45:59 markus Exp $ */ /* * Copyright (c) 2001 Daniel Hartmeier @@ -3732,6 +3732,22 @@ pf_test_state_tcp(struct pf_state **state, int direction, struct pfi_kif *kif, } } + if (((th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN) && + dst->state >= TCPS_FIN_WAIT_2 && + src->state >= TCPS_FIN_WAIT_2) { + if (pf_status.debug >= PF_DEBUG_MISC) { + printf("pf: state reuse "); + pf_print_state(*state); + pf_print_flags(th->th_flags); + printf("\n"); + } + /* XXX make sure it's the same direction ?? */ + (*state)->src.state = (*state)->dst.state = TCPS_CLOSED; + pf_unlink_state(*state); + *state = NULL; + return (PF_DROP); + } + if (src->wscale && dst->wscale && !(th->th_flags & TH_SYN)) { sws = src->wscale & PF_WSCALE_MASK; dws = dst->wscale & PF_WSCALE_MASK; |