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Subject[PATCH 1/4] wifi: wilc1000: split deeply nested RCU list traversal in dedicated helper
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(-)

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;
--
2.43.0


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