| Message ID | 20240215-wilc_fix_rcu_usage-v1-1-f610e46c6f82@bootlin.com |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: wilc1000: fix RCU usage | expand |
Alexis Lothoré <alexis.lothore@bootlin.com> wrote: > Move netif_wake_queue and its surrounding RCU operations in a dedicated > function to clarify wilc_txq_task and ease refactoring > > Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com> 4 patches applied to wireless-next.git, thanks. 5d2dbccc2b3c wifi: wilc1000: split deeply nested RCU list traversal in dedicated helper 059d0e3876ab wifi: wilc1000: use SRCU instead of RCU for vif list traversal 51e4aa8c449b wifi: wilc1000: fix declarations ordering dd66185c23f7 wifi: wilc1000: add missing read critical sections around vif list traversal
diff --git a/drivers/net/wireless/microchip/wilc1000/netdev.c b/drivers/net/wireless/microchip/wilc1000/netdev.c index 22f461f477f1..62414ab8846e 100644 --- a/drivers/net/wireless/microchip/wilc1000/netdev.c +++ b/drivers/net/wireless/microchip/wilc1000/netdev.c @@ -140,6 +140,19 @@ int wilc_wlan_get_num_conn_ifcs(struct wilc *wilc) return ret_val; } +static void wilc_wake_tx_queues(struct wilc *wl) +{ + int srcu_idx; + struct wilc_vif *ifc; + + srcu_idx = srcu_read_lock(&wl->srcu); + list_for_each_entry_rcu(ifc, &wl->vif_list, list) { + if (ifc->mac_opened && netif_queue_stopped(ifc->ndev)) + netif_wake_queue(ifc->ndev); + } + srcu_read_unlock(&wl->srcu, srcu_idx); +} + static int wilc_txq_task(void *vp) { int ret; @@ -160,17 +173,7 @@ static int wilc_txq_task(void *vp) do { ret = wilc_wlan_handle_txq(wl, &txq_count); if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) { - int srcu_idx; - struct wilc_vif *ifc; - - srcu_idx = srcu_read_lock(&wl->srcu); - list_for_each_entry_rcu(ifc, &wl->vif_list, - list) { - if (ifc->mac_opened && - netif_queue_stopped(ifc->ndev)) - netif_wake_queue(ifc->ndev); - } - srcu_read_unlock(&wl->srcu, srcu_idx); + wilc_wake_tx_queues(wl); } if (ret != WILC_VMM_ENTRY_FULL_RETRY) break;
Move netif_wake_queue and its surrounding RCU operations in a dedicated function to clarify wilc_txq_task and ease refactoring Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com> --- drivers/net/wireless/microchip/wilc1000/netdev.c | 25 +++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-)