Author: melifaro
Date: Sat May 5 11:34:27 2012
New Revision: 235056
URL: http://svn.freebsd.org/changeset/base/235056
Log:
MFC r234572
Do not require radix write lock to be held while dumping route table
via sysctl(4) interface. This permits router not to stop forwarding
packets while route table is being written to user-supplied buffer.
Reported by: Pawel Tyll <pt...@nitronet.pl>
Approved by: kib(mentor)
Modified:
stable/8/sys/net/rtsock.c
Directory Properties:
stable/8/sys/ (props changed)
Modified: stable/8/sys/net/rtsock.c
==============================================================================
--- stable/8/sys/net/rtsock.c Sat May 5 11:33:48 2012 (r235055)
+++ stable/8/sys/net/rtsock.c Sat May 5 11:34:27 2012 (r235056)
@@ -1857,10 +1857,10 @@ sysctl_rtsock(SYSCTL_HANDLER_ARGS)
for (error = 0; error == 0 && i <= lim; i++) {
rnh = rt_tables_get_rnh(req->td->td_proc->p_fibnum, i);
if (rnh != NULL) {
- RADIX_NODE_HEAD_LOCK(rnh);
+ RADIX_NODE_HEAD_RLOCK(rnh);
error = rnh->rnh_walktree(rnh,
sysctl_dumpentry, &w);
- RADIX_NODE_HEAD_UNLOCK(rnh);
+ RADIX_NODE_HEAD_RUNLOCK(rnh);
} else if (af != 0)
error = EAFNOSUPPORT;
}
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