commit 3f045a08812525505e165deea99a79447b44506b
author Josh Bailey <joshb@google.com> Sat Mar 24 08:35:20 2012 -0700
committer Avneesh Sachdev <avneesh@opensourcerouting.org> Sat Apr 07 13:54:37 2012 -0700
tree a5c944b0584e0e5a14908a2ac9476637e7c1d7e6
parent 6902c69aa30a73ecd70ef8941518b541ca02b878

isisd: add Google's changes to IS-IS

isisd/isis_bpf.c

diff --git a/isisd/isis_bpf.c b/isisd/isis_bpf.c
index 05f1138..4d5b165 100644
--- a/isisd/isis_bpf.c
+++ b/isisd/isis_bpf.c
@@ -301,7 +301,16 @@
 isis_send_pdu_bcast (struct isis_circuit *circuit, int level)
 {
   struct ether_header *eth;
-  int written;
+  int written, buflen;
+
+  buflen = stream_get_endp (circuit->snd_stream) + LLC_LEN + ETHER_HDR_LEN;
+  if (buflen > sizeof (sock_buff))
+    {
+      zlog_warn ("isis_send_pdu_bcast: sock_buff size %lu is less than "
+		 "output pdu size %d on circuit %s",
+		 sizeof (sock_buff), buflen, circuit->interface->name);
+      return ISIS_WARNING;
+    }
 
   stream_set_getp (circuit->snd_stream, 0);
 
@@ -328,9 +337,7 @@
 	  stream_get_endp (circuit->snd_stream));
 
   /* now we can send this */
-  written = write (circuit->fd, sock_buff,
-		   stream_get_endp (circuit->snd_stream) 
-		    + LLC_LEN + ETHER_HDR_LEN);
+  written = write (circuit->fd, sock_buff, buflen);
 
   return ISIS_OK;
 }