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[PATCH 4.4 08/15] revert "net: account for current skb length when deciding about UFO"

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  [PATCH 4.4 08/15] revert "net: account for current skb length when deciding about UFO" Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-08-12 00:10 +0200

#1710007 — [PATCH 4.4 08/15] revert "net: account for current skb length when deciding about UFO"

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

This reverts commit ef09c9ff343122a0b245416066992d096416ff19 which is
commit a5cb659bbc1c8644efa0c3138a757a1e432a4880 upstream as it causes
merge issues with later patches that are much more important...

Cc: Michal Kubecek <mkubecek@suse.cz>
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ipv4/ip_output.c  |    3 +--
 net/ipv6/ip6_output.c |    2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -922,8 +922,7 @@ static int __ip_append_data(struct sock
 		csummode = CHECKSUM_PARTIAL;
 
 	cork->length += length;
-	if ((((length + (skb ? skb->len : fragheaderlen)) > mtu) ||
-	     (skb && skb_is_gso(skb))) &&
+	if ((((length + fragheaderlen) > mtu) || (skb && skb_is_gso(skb))) &&
 	    (sk->sk_protocol == IPPROTO_UDP) &&
 	    (rt->dst.dev->features & NETIF_F_UFO) && !rt->dst.header_len &&
 	    (sk->sk_type == SOCK_DGRAM) && !sk->sk_no_check_tx) {
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1357,7 +1357,7 @@ emsgsize:
 	 */
 
 	cork->length += length;
-	if ((((length + (skb ? skb->len : headersize)) > mtu) ||
+	if ((((length + fragheaderlen) > mtu) ||
 	     (skb && skb_is_gso(skb))) &&
 	    (sk->sk_protocol == IPPROTO_UDP) &&
 	    (rt->dst.dev->features & NETIF_F_UFO) &&

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