[PATCH 4.9 13/16] revert "ipv4: Should use consistent conditional judgement for ip fragment in __ip_append_data and ip_finish_output"

[Greg Kroah-Hartman]

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

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

This reverts commit f102bb7164c9020e12662998f0fd99c3be72d4f6 which is
commit 0a28cfd51e17f4f0a056bcf66bfbe492c3b99f38 upstream as there is
another patch that needs to be applied instead of this one.

Cc: Zheng Li <james.z...@ericsson.com>
Cc: David S. Miller <da...@davemloft.net>
Cc: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 net/ipv4/ip_output.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -936,7 +936,7 @@ static int __ip_append_data(struct sock
                csummode = CHECKSUM_PARTIAL;
 
        cork->length += length;
-       if ((((length + fragheaderlen) > mtu) || (skb && skb_is_gso(skb))) &&
+       if (((length > 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) {