From 70277f47b58b174a6b0b891dcd06ae5125afb73b Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Thu, 20 Dec 2012 14:31:51 +0100 Subject: [PATCH] iwlegacy: add flush callback Dump implementation of flush, which just wait until all TX queues become empty. Signed-off-by: Stanislaw Gruszka Signed-off-by: John W. Linville --- drivers/net/wireless/iwlegacy/3945-mac.c | 1 + drivers/net/wireless/iwlegacy/4965-mac.c | 1 + drivers/net/wireless/iwlegacy/common.c | 36 ++++++++++++++++++++++++++++++ drivers/net/wireless/iwlegacy/common.h | 1 + 4 files changed, 39 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c index d604b40..962400a 100644 --- a/drivers/net/wireless/iwlegacy/3945-mac.c +++ b/drivers/net/wireless/iwlegacy/3945-mac.c @@ -3474,6 +3474,7 @@ struct ieee80211_ops il3945_mac_ops = { .sta_add = il3945_mac_sta_add, .sta_remove = il_mac_sta_remove, .tx_last_beacon = il_mac_tx_last_beacon, + .flush = il_mac_flush, }; static int diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c index 6a86ed4..c40020c 100644 --- a/drivers/net/wireless/iwlegacy/4965-mac.c +++ b/drivers/net/wireless/iwlegacy/4965-mac.c @@ -6308,6 +6308,7 @@ const struct ieee80211_ops il4965_mac_ops = { .sta_remove = il_mac_sta_remove, .channel_switch = il4965_mac_channel_switch, .tx_last_beacon = il_mac_tx_last_beacon, + .flush = il_mac_flush, }; static int diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c index 7e16d10..56b8021 100644 --- a/drivers/net/wireless/iwlegacy/common.c +++ b/drivers/net/wireless/iwlegacy/common.c @@ -4707,6 +4707,42 @@ out: } EXPORT_SYMBOL(il_mac_change_interface); +void +il_mac_flush(struct ieee80211_hw *hw, bool drop) +{ + struct il_priv *il = hw->priv; + unsigned long timeout = jiffies + msecs_to_jiffies(500); + int i; + + mutex_lock(&il->mutex); + D_MAC80211("enter\n"); + + if (il->txq == NULL) + goto out; + + for (i = 0; i < il->hw_params.max_txq_num; i++) { + struct il_queue *q; + + if (i == il->cmd_queue) + continue; + + q = &il->txq[i].q; + if (q->read_ptr == q->write_ptr) + continue; + + if (time_after(jiffies, timeout)) { + IL_ERR("Failed to flush queue %d\n", q->id); + break; + } + + msleep(20); + } +out: + D_MAC80211("leave\n"); + mutex_unlock(&il->mutex); +} +EXPORT_SYMBOL(il_mac_flush); + /* * On every watchdog tick we check (latest) time stamp. If it does not * change during timeout period and queue is not empty we reset firmware. diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h index a9a569f..37fe553 100644 --- a/drivers/net/wireless/iwlegacy/common.h +++ b/drivers/net/wireless/iwlegacy/common.h @@ -1723,6 +1723,7 @@ void il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif); int il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum nl80211_iftype newtype, bool newp2p); +void il_mac_flush(struct ieee80211_hw *hw, bool drop); int il_alloc_txq_mem(struct il_priv *il); void il_free_txq_mem(struct il_priv *il); -- 1.7.7.6