Author: melifaro Date: Sun Apr 22 16:13:23 2012 New Revision: 234572 URL: http://svn.freebsd.org/changeset/base/234572
Log: 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 <[email protected]> Approved by: kib(mentor) MFC after: 1 week Modified: head/sys/net/rtsock.c Modified: head/sys/net/rtsock.c ============================================================================== --- head/sys/net/rtsock.c Sun Apr 22 09:19:19 2012 (r234571) +++ head/sys/net/rtsock.c Sun Apr 22 16:13:23 2012 (r234572) @@ -1884,10 +1884,10 @@ 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; } _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
