diff options
| author |   Sven Eckelmann <sven@narfation.org> | 2020-11-26 13:52:47 +0100 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2020-11-30 18:10:12 -0800 |
| commit | a5e74021e84bb5eadf760aaf2c583304f02269be (patch) | |
| tree | b39ad57ece57a4bd0a8200da48dfc02a9470f835 /drivers/net/vxlan.c | |
| parent | vxlan: Add needed_headroom for lower device (diff) | |
| download | linux-dev-a5e74021e84bb5eadf760aaf2c583304f02269be.tar.xz linux-dev-a5e74021e84bb5eadf760aaf2c583304f02269be.zip | |
vxlan: Copy needed_tailroom from lowerdev
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>
Diffstat (limited to 'drivers/net/vxlan.c')
| -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 55fa3fbb80f1..032f78261913 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -3800,6 +3800,8 @@ 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) |