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net: add softnet_data.in_net_rx_action

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We want to make two optimizations in napi_schedule_rps() and
____napi_schedule() which require to know if these helpers are
called from net_rx_action(), instead of being called from
other contexts.

sd.in_net_rx_action is only read/written by the owning cpu.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Tested-by: Jason Xing <kerneljasonxing@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Eric Dumazet
2023-03-28 23:50:19 +00:00
committed by Paolo Abeni
parent 8fcb76b934
commit c59647c0dc
2 changed files with 5 additions and 0 deletions
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include/linux/netdevice.h
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@@ -3188,6 +3188,7 @@ struct softnet_data {
#ifdef CONFIG_RPS
struct softnet_data *rps_ipi_list;
#endif
bool in_net_rx_action;
#ifdef CONFIG_NET_FLOW_LIMIT
struct sd_flow_limit __rcu *flow_limit;
#endif