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

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Message-Id: <20170811220133.270326480@linuxfoundation.org>
Date:   Fri, 11 Aug 2017 15:01:43 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zheng Li <james.z.li@...csson.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 13/16] revert "ipv4: Should use consistent conditional judgement for ip fragment in __ip_append_data and ip_finish_output"

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.li@...csson.com>
Cc: David S. Miller <davem@...emloft.net>
Cc: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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) {