mac80211: support use of NAPI for bottom-half processing
This patch implement basic infrastructure to support use of NAPI by
mac80211-based hardware drivers.
Because mac80211 devices can support multiple netdevs, a dummy netdev
is used for interfacing with the NAPI code in the core of the network
stack. That structure is hidden from the hardware drivers, but the
actual napi_struct is exposed in the ieee80211_hw structure so that the
poll routines in drivers can retrieve that structure. Hardware drivers
can also specify their own weight value for NAPI polling.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index ebbe264..c1008a9 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -187,6 +187,8 @@
res = drv_start(local);
if (res)
goto err_del_bss;
+ if (local->ops->napi_poll)
+ napi_enable(&local->napi);
/* we're brought up, everything changes */
hw_reconf_flags = ~0;
ieee80211_led_radio(local, true);
@@ -519,6 +521,8 @@
ieee80211_recalc_ps(local, -1);
if (local->open_count == 0) {
+ if (local->ops->napi_poll)
+ napi_disable(&local->napi);
ieee80211_clear_tx_pending(local);
ieee80211_stop_device(local);