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mac80211: add an option for drivers to check if packets can be aggregated

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Some hardwares have limitations on the packets' type in AMSDU.
Add an optional driver callback to determine if two skbs can
be used in the same AMSDU or not.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Sara Sharon 2018-09-05 08:06:11 +03:00 committed by Johannes Berg
parent edba6bdad6
commit 9739fe29a2
3 changed files with 20 additions and 0 deletions
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7
include/net/mac80211.h
View File

@ -3594,6 +3594,10 @@ enum ieee80211_reconfig_type {
* @del_nan_func: Remove a NAN function. The driver must call
* ieee80211_nan_func_terminated() with
* NL80211_NAN_FUNC_TERM_REASON_USER_REQUEST reason code upon removal.
* @can_aggregate_in_amsdu: Called in order to determine if HW supports
* aggregating two specific frames in the same A-MSDU. The relation
* between the skbs should be symmetric and transitive. Note that while
* skb is always a real frame, head may or may not be an A-MSDU.
*/
struct ieee80211_ops {
void (*tx)(struct ieee80211_hw *hw,
@ -3876,6 +3880,9 @@ struct ieee80211_ops {
void (*del_nan_func)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u8 instance_id);
bool (*can_aggregate_in_amsdu)(struct ieee80211_hw *hw,
struct sk_buff *head,
struct sk_buff *skb);
};
/**

10
net/mac80211/driver-ops.h
View File

@ -1173,6 +1173,16 @@ static inline void drv_wake_tx_queue(struct ieee80211_local *local,
local->ops->wake_tx_queue(&local->hw, &txq->txq);
}
static inline int drv_can_aggregate_in_amsdu(struct ieee80211_local *local,
struct sk_buff *head,
struct sk_buff *skb)
{
if (!local->ops->can_aggregate_in_amsdu)
return true;
return local->ops->can_aggregate_in_amsdu(&local->hw, head, skb);
}
static inline int drv_start_nan(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct cfg80211_nan_conf *conf)

3
net/mac80211/tx.c
View File

@ -3261,6 +3261,9 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata,
if (max_frags && nfrags > max_frags)
goto out;
if (!drv_can_aggregate_in_amsdu(local, head, skb))
goto out;
if (!ieee80211_amsdu_prepare_head(sdata, fast_tx, head))
goto out;