Patch "net: skb_needs_check() accepts CHECKSUM_NONE for tx" has been added to the 4.4-stable tree

Patch "net: skb_needs_check() accepts CHECKSUM_NONE for tx" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    net: skb_needs_check() accepts CHECKSUM_NONE for tx

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-skb_needs_check-accepts-checksum_none-for-tx.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 6e7bc478c9a006c701c14476ec9d389a484b4864 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Fri, 3 Feb 2017 14:29:42 -0800
Subject: net: skb_needs_check() accepts CHECKSUM_NONE for tx

From: Eric Dumazet <edumazet@google.com>

commit 6e7bc478c9a006c701c14476ec9d389a484b4864 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/core/dev.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2550,9 +2550,10 @@ 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;
 }
 
 /**


Patches currently in stable-queue which might be from edumazet@google.com are

queue-4.4/net-skb_needs_check-accepts-checksum_none-for-tx.patch
queue-4.4/net-reduce-skb_warn_bad_offload-noise.patch