diff options
| author | Eric Dumazet | 2017-10-19 02:02:03 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-10-21 02:55:05 +0200 |
| commit | 164a5e7ad531e181334a3d3f03d0d5ad20d6faea (patch) | |
| tree | 5d78b377974176cc696dafd4c76e5defec13e0a6 /net/ipv4/route.c | |
| parent | Merge branch 'ieee802154-for-davem-2017-10-18' of git://git.kernel.org/pub/sc... (diff) | |
| download | kernel-qcow2-linux-164a5e7ad531e181334a3d3f03d0d5ad20d6faea.tar.gz kernel-qcow2-linux-164a5e7ad531e181334a3d3f03d0d5ad20d6faea.tar.xz kernel-qcow2-linux-164a5e7ad531e181334a3d3f03d0d5ad20d6faea.zip | |
ipv4: ipv4_default_advmss() should use route mtu
ipv4_default_advmss() incorrectly uses the device MTU instead
of the route provided one. IPv6 has the proper behavior,
lets harmonize the two protocols.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 4306db827374..bc40bd411196 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1250,7 +1250,7 @@ static void set_class_tag(struct rtable *rt, u32 tag) 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); |