Patch "ipv4: ipv4_default_advmss() should use route mtu" has been added to the 4.14-stable tree

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

ipv4: ipv4_default_advmss() should use route mtu

to the 4.14-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:
ipv4-ipv4_default_advmss-should-use-route-mtu.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Eric Dumazet <[email protected]>
Date: Wed, 18 Oct 2017 17:02:03 -0700
Subject: ipv4: ipv4_default_advmss() should use route mtu

From: Eric Dumazet <[email protected]>

[ Upstream commit 164a5e7ad531e181334a3d3f03d0d5ad20d6faea ]

ipv4_default_advmss() incorrectly uses the device MTU instead of the route provided one. IPv6 has the proper behavior, lets harmonize the two protocols.

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

@@ -1254,7 +1254,7 @@ static void set_class_tag(struct rtable
 static unsigned int ipv4_default_advmss(const struct dst_entry *dst)
 {
 	unsigned int header_size = sizeof(struct tcphdr) + sizeof(struct iphdr);
-	unsigned int advmss = max_t(unsigned int, dst->dev->mtu - header_size,
+	unsigned int advmss = max_t(unsigned int, ipv4_mtu(dst) - header_size,
 				    ip_rt_min_advmss);
 
 	return min(advmss, IPV4_MAX_PMTU - header_size);

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/ipv4-ipv4_default_advmss-should-use-route-mtu.patch