From: Kalle Valo <kalle.valo@xxxxxxxxx>
ieee80211_rx() must be called with bottom halves disabled. To simplify
driver development implement ieee80211_rx_ni() which disables BH. This
function must be used when in process context.
Signed-off-by: Kalle Valo <kalle.valo@xxxxxxxxx>
---
include/net/mac80211.h | 32 ++++++++++++++++++++++++++------
1 files changed, 26 insertions(+), 6 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index c75b960..c42c4a8 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1665,11 +1665,11 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw);
* header if %RX_FLAG_RADIOTAP is set in the @status flags.
*
* This function may not be called in IRQ context. Calls to this function
- * for a single hardware must be synchronized against each other. Calls
- * to this function and ieee80211_rx_irqsafe() may not be mixed for a
- * single hardware.
+ * for a single hardware must be synchronized against each other. Calls to
+ * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be
+ * mixed for a single hardware.
*
- * Note that right now, this function must be called with softirqs disabled.
+ * In process context use instead ieee80211_rx_ni().
*
* @hw: the hardware this frame came in on
* @skb: the buffer to receive, owned by mac80211 after this call
@@ -1682,8 +1682,8 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb);
* Like ieee80211_rx() but can be called in IRQ context
* (internally defers to a tasklet.)
*
- * Calls to this function and ieee80211_rx() may not be mixed for a
- * single hardware.
+ * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not
+ * be mixed for a single hardware.
*
* @hw: the hardware this frame came in on
* @skb: the buffer to receive, owned by mac80211 after this call
@@ -1691,6 +1691,26 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb);
void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb);
/**
+ * ieee80211_rx_ni - receive frame (in process context)
+ *
+ * Like ieee80211_rx() but can be called in process context
+ * (internally disables bottom halves).
+ *
+ * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may
+ * not be mixed for a single hardware.
+ *
+ * @hw: the hardware this frame came in on
+ * @skb: the buffer to receive, owned by mac80211 after this call
+ */
+static inline void ieee80211_rx_ni(struct ieee80211_hw *hw,
+ struct sk_buff *skb)
+{
+ local_bh_disable();
+ ieee80211_rx(hw, skb);
+ local_bh_enable();
+}
+
+/**
* ieee80211_tx_status - transmit status callback
*
* Call this function for all transmitted frames after they have been
--
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