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(parent: 86af2c8) | patch
vlan/8021q: avoid retpoline overhead on GRO
authorAlexander Lobakin <alobakin@pm.me>
Thu, 18 Mar 2021 18:42:34 +0000 (18:42 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 19 Mar 2021 02:51:12 +0000 (19:51 -0700)
commit4a6e7ec93a602b1e386704aeb0ce76bfc1ba8030
treea0ec1b5cbf18e9d0a1b906ba522e84490f3bd3a5tree | snapshot
parent86af2c82c28499b4b509d6b15637a96bd829201bcommit | diff
vlan/8021q: avoid retpoline overhead on GRO

The two most popular headers going after VLAN are IPv4 and IPv6.
Retpoline overhead for them is addressed only in dev_gro_receive(),
when they lie right after the outermost Ethernet header.
Use the indirect call wrappers in VLAN GRO receive code to reduce
the penalty on receiving tagged frames (when hardware stripping is
off or not available).

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/8021q/vlan_core.c diff | blob | history
Domain: System / Kernel;