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