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authorEmmanuel Grumbach <emmanuel.grumbach@intel.com>2012-02-09 16:08:15 +0200
committerWey-Yi Guy <wey-yi.w.guy@intel.com>2012-02-27 13:26:33 -0800
commited277c9361e423df2bc19312c60b9d06cac31ee6 (patch)
tree210cc5dfe7636aa1a525849a4ca05afe1b73c2a6 /drivers/net/wireless/iwlwifi/iwl-op-mode.h
parentcbe6ab4e11603e426e01c6349cd5643f3a287ba4 (diff)
iwlwifi: virtualize op_mode's free skb
This handler allows the transport layer to free an skb from the op_mode. This can happen when the driver is stopped while Tx packets are pending in the transport layer. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-op-mode.h')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-op-mode.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-op-mode.h b/drivers/net/wireless/iwlwifi/iwl-op-mode.h
index c85c8dcabb4..59dd3074bf7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-op-mode.h
+++ b/drivers/net/wireless/iwlwifi/iwl-op-mode.h
@@ -65,6 +65,7 @@
struct iwl_op_mode;
struct iwl_trans;
+struct sk_buff;
/**
* struct iwl_op_mode_ops - op_mode specific operations
@@ -75,10 +76,15 @@ struct iwl_trans;
* May sleep
* @stop: stop the op_mode
* May sleep
+ * @free_skb: allows the transport layer to free skbs that haven't been
+ * reclaimed by the op_mode. This can happen when the driver is freed and
+ * there are Tx packets pending in the transport layer.
+ * Must be atomic
*/
struct iwl_op_mode_ops {
struct iwl_op_mode *(*start)(struct iwl_trans *trans);
void (*stop)(struct iwl_op_mode *op_mode);
+ void (*free_skb)(struct iwl_op_mode *op_mode, struct sk_buff *skb);
};
/**
@@ -100,6 +106,12 @@ static inline void iwl_op_mode_stop(struct iwl_op_mode *op_mode)
op_mode->ops->stop(op_mode);
}
+static inline void iwl_op_mode_free_skb(struct iwl_op_mode *op_mode,
+ struct sk_buff *skb)
+{
+ op_mode->ops->free_skb(op_mode, skb);
+}
+
/*****************************************************
* Op mode layers implementations
******************************************************/