Author: rwatson
Date: Sun Apr 19 22:04:29 2009
New Revision: 191283
URL: http://svn.freebsd.org/changeset/base/191283
Log:
Lock interface address list when building a reply to NGM_EIFACE_GET_IFADDRS
messages in ng_eiface.
MFC after: 2 weeks
Modified:
head/sys/netgraph/ng_eiface.c
Modified: head/sys/netgraph/ng_eiface.c
==============================================================================
--- head/sys/netgraph/ng_eiface.c Sun Apr 19 22:02:14 2009
(r191282)
+++ head/sys/netgraph/ng_eiface.c Sun Apr 19 22:04:29 2009
(r191283)
@@ -452,10 +452,12 @@ ng_eiface_rcvmsg(node_p node, item_p ite
/* Determine size of response and allocate it */
buflen = 0;
+ IF_ADDR_LOCK(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
buflen += SA_SIZE(ifa->ifa_addr);
NG_MKRESPONSE(resp, msg, buflen, M_NOWAIT);
if (resp == NULL) {
+ IF_ADDR_UNLOCK(ifp);
error = ENOMEM;
break;
}
@@ -474,6 +476,7 @@ ng_eiface_rcvmsg(node_p node, item_p ite
ptr += len;
buflen -= len;
}
+ IF_ADDR_UNLOCK(ifp);
break;
}
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