xfrm: Increment statistic counter on inner mode error
authorSteffen Klassert <steffen.klassert@secunet.com>
Fri, 23 Oct 2015 05:52:58 +0000 (07:52 +0200)
committerSteffen Klassert <steffen.klassert@secunet.com>
Fri, 23 Oct 2015 05:52:58 +0000 (07:52 +0200)
Increment the LINUX_MIB_XFRMINSTATEMODEERROR statistic counter
to notify about dropped packets if we fail to fetch a inner mode.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
net/xfrm/xfrm_input.c

index 60ce7014e1b094ef0013f27330ab8c0bec24e284..ad7f5b3f9b619ff22cb22da32b7f259abe82ca3d 100644 (file)
@@ -330,8 +330,10 @@ resume:
 
                if (x->sel.family == AF_UNSPEC) {
                        inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol);
-                       if (inner_mode == NULL)
+                       if (inner_mode == NULL) {
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMODEERROR);
                                goto drop;
+                       }
                }
 
                if (inner_mode->input(x, skb)) {