From: Florin Coras <fcoras@cisco.com>
Date: Sat, 14 Oct 2017 18:02:37 +0000 (-0700)
Subject: ip: avoid arp assert if out of buffers (VPP-1030)
X-Git-Tag: v18.04-rc0~458
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=d172a62365523427aebd34444736632c9a68a463;p=vpp.git

ip: avoid arp assert if out of buffers (VPP-1030)

Change-Id: Ia31b978c6c1619c3e0075a84fcbbb6ccbf1c0076
Signed-off-by: Florin Coras <fcoras@cisco.com>
---

diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index c2a2f79e02f..8b21869a410 100755
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -2039,6 +2039,10 @@ ip4_arp_inline (vlib_main_t * vm,
 						 &im->ip4_arp_request_packet_template,
 						 &bi0);
 
+	      /* Seems we're out of buffers */
+	      if (PREDICT_FALSE (!h0))
+		continue;
+
 	      /* Add rewrite/encap string for ARP packet. */
 	      vnet_rewrite_one_header (adj0[0], h0,
 				       sizeof (ethernet_header_t));