diff options
| author | George V. Neville-Neil <gnn@FreeBSD.org> | 2016-03-24 07:54:56 +0000 |
|---|---|---|
| committer | George V. Neville-Neil <gnn@FreeBSD.org> | 2016-03-24 07:54:56 +0000 |
| commit | 84cc0778d06816e6b0676b9f7133e747e3d8b7c8 (patch) | |
| tree | e930aaa09aa8f724ba7ca61b6ec317d3c5bf9cee /sys/netinet/tcp_output.c | |
| parent | 1c9b29f95faf43b12e230f5e95c94ffc044c37bd (diff) | |
| download | src-84cc0778d06816e6b0676b9f7133e747e3d8b7c8.tar.gz src-84cc0778d06816e6b0676b9f7133e747e3d8b7c8.zip | |
FreeBSD previously provided route caching for TCP (and UDP). Re-add
route caching for TCP, with some improvements. In particular, invalidate
the route cache if a new route is added, which might be a better match.
The cache is automatically invalidated if the old route is deleted.
Submitted by: Mike Karels
Reviewed by: gnn
Differential Revision: https://reviews.freebsd.org/D4306
Notes
Notes:
svn path=/head/; revision=297225
Diffstat (limited to 'sys/netinet/tcp_output.c')
| -rw-r--r-- | sys/netinet/tcp_output.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c index d7fb75ddec4a..2043fc959bd1 100644 --- a/sys/netinet/tcp_output.c +++ b/sys/netinet/tcp_output.c @@ -1379,9 +1379,6 @@ send: #endif #ifdef INET { - struct route ro; - - bzero(&ro, sizeof(ro)); ip->ip_len = htons(m->m_pkthdr.len); #ifdef INET6 if (tp->t_inpcb->inp_vflag & INP_IPV6PROTO) @@ -1412,13 +1409,12 @@ send: tcp_pcap_add(th, m, &(tp->t_outpkts)); #endif - error = ip_output(m, tp->t_inpcb->inp_options, &ro, + error = ip_output(m, tp->t_inpcb->inp_options, &tp->t_inpcb->inp_route, ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0), 0, tp->t_inpcb); - if (error == EMSGSIZE && ro.ro_rt != NULL) - mtu = ro.ro_rt->rt_mtu; - RO_RTFREE(&ro); + if (error == EMSGSIZE && tp->t_inpcb->inp_route.ro_rt != NULL) + mtu = tp->t_inpcb->inp_route.ro_rt->rt_mtu; } #endif /* INET */ |