diff options
| author | Sven Eckelmann <sven@narfation.org> | 2020-11-26 13:52:47 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-29 13:46:48 +0100 |
| commit | 2673eb2aa39293f08fa5ee60c5775d9ac183cbb2 (patch) | |
| tree | e20c1377bf871c6d32e3807c6339d484aede8d2c /drivers | |
| parent | 951481c52a94ba646e35b99fdb93177ab580555b (diff) | |
vxlan: Copy needed_tailroom from lowerdev
[ Upstream commit a5e74021e84bb5eadf760aaf2c583304f02269be ]
While vxlan doesn't need any extra tailroom, the lowerdev might need it. In
that case, copy it over to reduce the chance for additional (re)allocations
in the transmit path.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Link: https://lore.kernel.org/r/20201126125247.1047977-2-sven@narfation.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/vxlan.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index c21f28840f05..94a9add2fc87 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -3186,6 +3186,8 @@ static void vxlan_config_apply(struct net_device *dev, needed_headroom = lowerdev->hard_header_len; needed_headroom += lowerdev->needed_headroom; + dev->needed_tailroom = lowerdev->needed_tailroom; + max_mtu = lowerdev->mtu - (use_ipv6 ? VXLAN6_HEADROOM : VXLAN_HEADROOM); if (max_mtu < ETH_MIN_MTU) |