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mac80211: extend ieee80211_tx_status_ext to support bulk free 

Store processed skbs ready to be freed in a list so the driver bulk free them

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20200908123702.88454-13-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2020-09-08 14:37:00 +02:00 committed by Johannes Berg
parent 23e9f1ef16
commit f02dff93e2
2 changed files with 10 additions and 2 deletions
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2
include/net/mac80211.h
View File

@ -1096,12 +1096,14 @@ ieee80211_info_get_tx_time_est(struct ieee80211_tx_info *info)
* @info: Basic tx status information
* @skb: Packet skb (can be NULL if not provided by the driver)
* @rate: The TX rate that was used when sending the packet
* @free_list: list where processed skbs are stored to be free'd by the driver
*/
struct ieee80211_tx_status {
struct ieee80211_sta *sta;
struct ieee80211_tx_info *info;
struct sk_buff *skb;
struct rate_info *rate;
struct list_head *free_list;
};
/**

10
net/mac80211/status.c
View File

@ -1044,7 +1044,10 @@ static void __ieee80211_tx_status(struct ieee80211_hw *hw,
* with this test...
*/
if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) {
dev_kfree_skb(skb);
if (status->free_list)
list_add_tail(&skb->list, status->free_list);
else
dev_kfree_skb(skb);
return;
}
@ -1173,7 +1176,10 @@ void ieee80211_tx_status_ext(struct ieee80211_hw *hw,
return;
ieee80211_report_used_skb(local, skb, false);
dev_kfree_skb(skb);
if (status->free_list)
list_add_tail(&skb->list, status->free_list);
else
dev_kfree_skb(skb);
}
EXPORT_SYMBOL(ieee80211_tx_status_ext);