diff options
| author | tuexen <tuexen@FreeBSD.org> | 2012-04-26 13:45:17 +0000 |
|---|---|---|
| committer | tuexen <tuexen@FreeBSD.org> | 2012-04-26 13:45:17 +0000 |
| commit | 11840986fd9cdd5997d721c151ff40164d2acebc (patch) | |
| tree | ac3d8b9bc7d1f80307023dd36bd733da29c53db8 /contrib/traceroute/traceroute.c | |
| parent | 44fc4ead693dba9caa34c3dcdc548e293bf9e2ff (diff) | |
| download | FreeBSD-src-11840986fd9cdd5997d721c151ff40164d2acebc.zip FreeBSD-src-11840986fd9cdd5997d721c151ff40164d2acebc.tar.gz | |
Fix a bug in the TCP tracerouting which resulted in not accepting any
incoming packets. So all packets seemed to be lost.
MFC after: 1 week
Diffstat (limited to 'contrib/traceroute/traceroute.c')
| -rw-r--r-- | contrib/traceroute/traceroute.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/contrib/traceroute/traceroute.c b/contrib/traceroute/traceroute.c index 1c98262..63cefa1 100644 --- a/contrib/traceroute/traceroute.c +++ b/contrib/traceroute/traceroute.c @@ -1406,8 +1406,7 @@ tcp_prep(struct outdata *outdata) tcp->th_sport = htons(ident); tcp->th_dport = htons(port + (fixedPort ? 0 : outdata->seq)); - tcp->th_seq = (tcp->th_sport << 16) | (tcp->th_dport + - (fixedPort ? outdata->seq : 0)); + tcp->th_seq = (tcp->th_sport << 16) | tcp->th_dport; tcp->th_ack = 0; tcp->th_off = 5; tcp->th_flags = TH_SYN; @@ -1425,8 +1424,8 @@ tcp_check(const u_char *data, int seq) struct tcphdr *const tcp = (struct tcphdr *) data; return (ntohs(tcp->th_sport) == ident - && ntohs(tcp->th_dport) == port + (fixedPort ? 0 : seq)) - && tcp->th_seq == (((tcp_seq)ident << 16) | (port + seq)); + && ntohs(tcp->th_dport) == port + (fixedPort ? 0 : seq) + && tcp->th_seq == (tcp_seq)((tcp->th_sport << 16) | tcp->th_dport)); } void |
