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| author | Hangbin Liu <liuhangbin@gmail.com> | 2021-07-09 06:45:02 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-09 23:53:53 +0300 |
| commit | 9992a078b1771da354ac1f9737e1e639b687caa2 (patch) | |
| tree | ebbff5d36d7650cc6db1114e5011f9a36c8ed44b /include/net | |
| parent | 28b34f01a73435a754956ebae826e728c03ffa38 (diff) | |
| download | linux-9992a078b1771da354ac1f9737e1e639b687caa2.tar.xz | |
net: ip_tunnel: fix mtu calculation for ETHER tunnel devices
Commit 28e104d00281 ("net: ip_tunnel: fix mtu calculation") removed
dev->hard_header_len subtraction when calculate MTU for tunnel devices
as there is an overhead for device that has header_ops.
But there are ETHER tunnel devices, like gre_tap or erspan, which don't
have header_ops but set dev->hard_header_len during setup. This makes
pkts greater than (MTU - ETH_HLEN) could not be xmited. Fix it by
subtracting the ETHER tunnel devices' dev->hard_header_len for MTU
calculation.
Fixes: 28e104d00281 ("net: ip_tunnel: fix mtu calculation")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
0 files changed, 0 insertions, 0 deletions