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authorFelix Fietkau <nbd@openwrt.org>2016-02-08 13:37:55 +0000
committerFelix Fietkau <nbd@openwrt.org>2016-02-08 13:37:55 +0000
commit21e716dbec4a1982baaf4206b093bd75857de94c (patch)
tree147961dcad97dd33d51c8e0d0b859f710a18b1e7 /package/kernel/mac80211
parentf3761eaacc215d5f1a87e683f4ce338223e3281b (diff)
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mac80211: update A-MSDU tx patch to the latest version
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48671
Diffstat (limited to 'package/kernel/mac80211')
-rw-r--r--package/kernel/mac80211/patches/322-mac80211-add-A-MSDU-tx-support.patch46
1 files changed, 27 insertions, 19 deletions
diff --git a/package/kernel/mac80211/patches/322-mac80211-add-A-MSDU-tx-support.patch b/package/kernel/mac80211/patches/322-mac80211-add-A-MSDU-tx-support.patch
index 43197d7..d55f772 100644
--- a/package/kernel/mac80211/patches/322-mac80211-add-A-MSDU-tx-support.patch
+++ b/package/kernel/mac80211/patches/322-mac80211-add-A-MSDU-tx-support.patch
@@ -48,21 +48,20 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
/* keep last, obviously */
NUM_IEEE80211_HW_FLAGS
-@@ -2070,6 +2080,9 @@ enum ieee80211_hw_flags {
+@@ -2070,6 +2080,8 @@ enum ieee80211_hw_flags {
* size is smaller (an example is LinkSys WRT120N with FW v1.0.07
* build 002 Jun 18 2012).
*
-+ * @max_tx_amsdu_subframes: maximum number of subframes used in software
-+ * A-MSDU aggregation
++ * @max_tx_fragments: maximum fragments per (A-)MSDU.
+ *
* @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX
* (if %IEEE80211_HW_QUEUE_CONTROL is set)
*
-@@ -2124,6 +2137,7 @@ struct ieee80211_hw {
+@@ -2124,6 +2136,7 @@ struct ieee80211_hw {
u8 max_rate_tries;
u8 max_rx_aggregation_subframes;
u8 max_tx_aggregation_subframes;
-+ u8 max_tx_amsdu_subframes;
++ u8 max_tx_fragments;
u8 offchannel_tx_hw_queue;
u8 radiotap_mcs_details;
u16 radiotap_vht_details;
@@ -121,7 +120,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
return skb;
}
EXPORT_SYMBOL(ieee80211_tx_dequeue);
-@@ -2757,6 +2761,149 @@ void ieee80211_clear_fast_xmit(struct st
+@@ -2757,6 +2761,158 @@ void ieee80211_clear_fast_xmit(struct st
kfree_rcu(fast_tx, rcu_head);
}
@@ -192,11 +191,13 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+ struct txq_info *txqi;
+ struct sk_buff **frag_tail, *head;
+ int subframe_len = skb->len - ETH_ALEN;
++ u8 max_subframes = sta->sta.max_amsdu_subframes;
++ int max_frags = local->hw.max_tx_fragments;
+ int max_amsdu_len;
+ __be16 len;
+ void *data;
+ bool ret = false;
-+ int n = 1;
++ int n = 1, nfrags;
+
+ if (!ieee80211_hw_check(&local->hw, TX_AMSDU))
+ return false;
@@ -208,13 +209,6 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+ if (test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags))
+ return false;
+
-+ /*
-+ * A-MPDU limits maximum MPDU size to 4095 bytes. Since aggregation
-+ * sessions are started/stopped without txq flush, use the limit here
-+ * to avoid having to de-aggregate later.
-+ */
-+ max_amsdu_len = min_t(int, sta->sta.max_amsdu_len, 4095);
-+
+ spin_lock_bh(&txqi->queue.lock);
+
+ head = skb_peek_tail(&txqi->queue);
@@ -224,17 +218,31 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+ if (skb->len + head->len > max_amsdu_len)
+ goto out;
+
++ /*
++ * HT A-MPDU limits maximum MPDU size to 4095 bytes. Since aggregation
++ * sessions are started/stopped without txq flush, use the limit here
++ * to avoid having to de-aggregate later.
++ */
++ if (skb->len + head->len > 4095 &&
++ !sta->sta.vht_cap.vht_supported)
++ goto out;
++
+ if (!ieee80211_amsdu_prepare_head(sdata, fast_tx, head))
+ goto out;
+
++ nfrags = 1 + skb_shinfo(skb)->nr_frags;
++ nfrags += 1 + skb_shinfo(head)->nr_frags;
+ frag_tail = &skb_shinfo(head)->frag_list;
+ while (*frag_tail) {
-+ frag_tail = &(*frag_tail)->next;
-+ n++;
++ nfrags += 1 + skb_shinfo(*frag_tail)->nr_frags;
++ frag_tail = &(*frag_tail)->next;
++ n++;
+ }
+
-+ if (local->hw.max_tx_amsdu_subframes &&
-+ n > local->hw.max_tx_amsdu_subframes)
++ if (max_subframes && n > max_subframes)
++ goto out;
++
++ if (max_frags && nfrags > max_frags)
+ goto out;
+
+ if (skb_headroom(skb) < 8 || skb_tailroom(skb) < 3) {
@@ -271,7 +279,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
static bool ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
struct net_device *dev, struct sta_info *sta,
struct ieee80211_fast_tx *fast_tx,
-@@ -2811,6 +2958,10 @@ static bool ieee80211_xmit_fast(struct i
+@@ -2811,6 +2967,10 @@ static bool ieee80211_xmit_fast(struct i
ieee80211_tx_stats(dev, skb->len + extra_head);