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| author | rwatson <rwatson@FreeBSD.org> | 2006-04-03 12:43:56 +0000 |
|---|---|---|
| committer | rwatson <rwatson@FreeBSD.org> | 2006-04-03 12:43:56 +0000 |
| commit | 206bd5674e4c71f5b56cf5b999c549dfebe5d319 (patch) | |
| tree | 06454947a4464dbfb3575e3c78a6d574620037da /sys/netinet | |
| parent | 57fde1acd9d06b3d72ff9aa21a26cf226e28e72f (diff) | |
| download | FreeBSD-src-206bd5674e4c71f5b56cf5b999c549dfebe5d319.zip FreeBSD-src-206bd5674e4c71f5b56cf5b999c549dfebe5d319.tar.gz | |
Clarify comment on handling of non-timewait TCP states in
tcp_usr_detach().
MFC after: 3 months
Diffstat (limited to 'sys/netinet')
| -rw-r--r-- | sys/netinet/tcp_usrreq.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c index b0ed728..547dfe6 100644 --- a/sys/netinet/tcp_usrreq.c +++ b/sys/netinet/tcp_usrreq.c @@ -218,14 +218,16 @@ tcp_usr_detach(struct socket *so) INP_UNLOCK(inp); } } else { + /* + * If not in timewait, there are two possible paths. First, + * the TCP connection is either embryonic or done, in which + * case we tear down all state. Second, it may still be + * active, in which case we acquire a reference to the socket + * and will free it later when TCP is done. + */ tp = intotcpcb(inp); if (inp->inp_vflag & INP_DROPPED || tp->t_state < TCPS_SYN_SENT) { - /* - * Connection has been dropped or is a listen socket, - * tear down all pcb state and allow socket to be - * freed. - */ tcp_discardcb(tp); #ifdef INET6 if (isipv6) { |
