net: skb_needs_check() accepts CHECKSUM_NONE for tx
authorEric Dumazet <edumazet@google.com>
Fri, 3 Feb 2017 22:29:42 +0000 (14:29 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 3 Feb 2017 22:33:01 +0000 (17:33 -0500)
My recent change missed fact that UFO would perform a complete
UDP checksum before segmenting in frags.

In this case skb->ip_summed is set to CHECKSUM_NONE.

We need to add this valid case to skb_needs_check()

Fixes: b2504a5dbef3 ("net: reduce skb_warn_bad_offload() noise")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/dev.c

index 4cde8bfb9bab449b83890192a7e28a423b319e23..42ba0379575a28525052a36620bfb30d38afc076 100644 (file)
@@ -2637,9 +2637,10 @@ EXPORT_SYMBOL(skb_mac_gso_segment);
 static inline bool skb_needs_check(struct sk_buff *skb, bool tx_path)
 {
        if (tx_path)
-               return skb->ip_summed != CHECKSUM_PARTIAL;
-       else
-               return skb->ip_summed == CHECKSUM_NONE;
+               return skb->ip_summed != CHECKSUM_PARTIAL &&
+                      skb->ip_summed != CHECKSUM_NONE;
+
+       return skb->ip_summed == CHECKSUM_NONE;
 }
 
 /**