Li RongQing 6213f07cb5 virtio_net: skip RCU read lock by checking xdp_enabled of vi ...

networking benchmark shows that __rcu_read_lock and
__rcu_read_unlock takes some cpu cycles, and we can avoid
calling them partially in virtio rx path by check xdp_enabled
of vi, and xdp is disabled most of time

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2021-10-10 11:31:09 +01:00

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