diff options
Diffstat (limited to 'sys/netinet/tcp_output.c')
| -rw-r--r-- | sys/netinet/tcp_output.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c index 089c7ea..0f889b4 100644 --- a/sys/netinet/tcp_output.c +++ b/sys/netinet/tcp_output.c @@ -864,6 +864,21 @@ send: (so->so_options & SO_DONTROUTE), 0); } if (error) { + + /* + * We know that the packet was lost, so back out the + * sequence number advance, if any. + */ + if (tp->t_force == 0 || !callout_active(tp->tt_persist)) { + /* + * No need to check for TH_FIN here because + * the TF_SENTFIN flag handles that case. + */ + if (flags & TH_SYN) + tp->snd_nxt--; + tp->snd_nxt -= len; + } + out: if (error == ENOBUFS) { if (!callout_active(tp->tt_rexmt) && |
