[PATCH net-next 2/2] ip6mr: restrict mroute6 "queue full" warning to related error values

[Julien Gomes]

When sending a cache report on mroute6_sk, mroute6 will emit a
"pending queue full" warning for every error value returned by
sock_queue_rcv_skb().
This warning can be misleading, for example on the EPERM error value
that sk_filter() can return.

Restricting this warning to only ENOMEM or ENOBUFS seems more
appropriate.

Signed-off-by: Julien Gomes <jul...@arista.com>
---
 net/ipv6/ip6mr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 7454850f2098..62fe5fd64f22 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1215,7 +1215,8 @@ static int ip6mr_cache_report(struct mr6_table *mrt, 
struct sk_buff *pkt,
         */
        ret = sock_queue_rcv_skb(mrt->mroute6_sk, skb);
        if (ret < 0) {
-               net_warn_ratelimited("mroute6: pending queue full, dropping 
entries\n");
+               if (ret == -ENOMEM || ret == -ENOBUFS)
+                       net_warn_ratelimited("mroute6: pending queue full, 
dropping entries\n");
                kfree_skb(skb);
        }
 
-- 
2.13.1