iwlwifi: fix TX status for aggregated packets

commit 143582c6847cb285b361804c613127c25de60ca4 upstream.

Only the first packet is currently handled correctly, but then
all others are assumed to have failed which is problematic. Fix
this, marking them all successful instead (since if they're not
then the firmware will have transmitted them as single frames.)

This fixes the lost packet reporting.

Also do a tiny variable scoping cleanup.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
[Add the dvm part]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c
index 1fef5240e6adc07317b7128bf7d7617385fa9aa8..e219e761f48b5b51e6eb22b2e0d040540aee82d8 100644 (file)
--- a/drivers/net/wireless/iwlwifi/dvm/tx.c
+++ b/drivers/net/wireless/iwlwifi/dvm/tx.c
@@ -1291,8 +1291,6 @@ int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
        struct iwl_compressed_ba_resp *ba_resp = (void *)pkt->data;
        struct iwl_ht_agg *agg;
        struct sk_buff_head reclaimed_skbs;
-       struct ieee80211_tx_info *info;
-       struct ieee80211_hdr *hdr;
        struct sk_buff *skb;
        int sta_id;
        int tid;
@@ -1379,22 +1377,28 @@ int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
        freed = 0;
 
        skb_queue_walk(&reclaimed_skbs, skb) {
-               hdr = (struct ieee80211_hdr *)skb->data;
+               struct ieee80211_hdr *hdr = (void *)skb->data;
+               struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 
                if (ieee80211_is_data_qos(hdr->frame_control))
                        freed++;
                else
                        WARN_ON_ONCE(1);
 
-               info = IEEE80211_SKB_CB(skb);
                iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
 
+               memset(&info->status, 0, sizeof(info->status));
+               /* Packet was transmitted successfully, failures come as single
+                * frames because before failing a frame the firmware transmits
+                * it without aggregation at least once.
+                */
+               info->flags |= IEEE80211_TX_STAT_ACK;
+
                if (freed == 1) {
                        /* this is the first skb we deliver in this batch */
                        /* put the rate scaling data there */
                        info = IEEE80211_SKB_CB(skb);
                        memset(&info->status, 0, sizeof(info->status));
-                       info->flags |= IEEE80211_TX_STAT_ACK;
                        info->flags |= IEEE80211_TX_STAT_AMPDU;
                        info->status.ampdu_ack_len = ba_resp->txed_2_done;
                        info->status.ampdu_len = ba_resp->txed;

diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c
index e05440d90319b339f203a2f1ff9658a0d97f615e..f41add9c8093e1a805023b06a27258f9bef600ee 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/iwlwifi/mvm/tx.c
@@ -819,16 +819,12 @@ int iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
        struct iwl_mvm_ba_notif *ba_notif = (void *)pkt->data;
        struct sk_buff_head reclaimed_skbs;
        struct iwl_mvm_tid_data *tid_data;
-       struct ieee80211_tx_info *info;
        struct ieee80211_sta *sta;
        struct iwl_mvm_sta *mvmsta;
-       struct ieee80211_hdr *hdr;
        struct sk_buff *skb;
        int sta_id, tid, freed;
-
        /* "flow" corresponds to Tx queue */
        u16 scd_flow = le16_to_cpu(ba_notif->scd_flow);
-
        /* "ssn" is start of block-ack Tx window, corresponds to index
         * (in Tx queue's circular buffer) of first TFD/frame in window */
        u16 ba_resp_scd_ssn = le16_to_cpu(ba_notif->scd_ssn);
@@ -885,22 +881,26 @@ int iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
        freed = 0;
 
        skb_queue_walk(&reclaimed_skbs, skb) {
-               hdr = (struct ieee80211_hdr *)skb->data;
+               struct ieee80211_hdr *hdr = (void *)skb->data;
+               struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 
                if (ieee80211_is_data_qos(hdr->frame_control))
                        freed++;
                else
                        WARN_ON_ONCE(1);
 
-               info = IEEE80211_SKB_CB(skb);
                iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
 
+               memset(&info->status, 0, sizeof(info->status));
+               /* Packet was transmitted successfully, failures come as single
+                * frames because before failing a frame the firmware transmits
+                * it without aggregation at least once.
+                */
+               info->flags |= IEEE80211_TX_STAT_ACK;
+
                if (freed == 1) {
                        /* this is the first skb we deliver in this batch */
                        /* put the rate scaling data there */
-                       info = IEEE80211_SKB_CB(skb);
-                       memset(&info->status, 0, sizeof(info->status));
-                       info->flags |= IEEE80211_TX_STAT_ACK;
                        info->flags |= IEEE80211_TX_STAT_AMPDU;
                        info->status.ampdu_ack_len = ba_notif->txed_2_done;
                        info->status.ampdu_len = ba_notif->txed;