Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

1 files changed, 305 insertions, 284 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index beecf50fbd10..4ed60ae81b99 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -27,10 +27,6 @@
 #include "tkip.h"
 #include "wme.h"
 
-static void ieee80211_release_reorder_frames(struct ieee80211_hw *hw,
-                                             struct tid_ampdu_rx *tid_agg_rx,
-                                             u16 head_seq_num);
-
 /*
  * monitor mode reception
  *
@@ -534,6 +530,242 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
         return RX_CONTINUE;
 }
 
+#define SEQ_MODULO 0x1000
+#define SEQ_MASK   0xfff
+
+static inline int seq_less(u16 sq1, u16 sq2)
+{
+        return ((sq1 - sq2) & SEQ_MASK) > (SEQ_MODULO >> 1);
+}
+
+static inline u16 seq_inc(u16 sq)
+{
+        return (sq + 1) & SEQ_MASK;
+}
+
+static inline u16 seq_sub(u16 sq1, u16 sq2)
+{
+        return (sq1 - sq2) & SEQ_MASK;
+}
+
+
+static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw,
+                                            struct tid_ampdu_rx *tid_agg_rx,
+                                            int index,
+                                            struct sk_buff_head *frames)
+{
+        struct ieee80211_supported_band *sband;
+        struct ieee80211_rate *rate = NULL;
+        struct sk_buff *skb = tid_agg_rx->reorder_buf[index];
+        struct ieee80211_rx_status *status;
+
+        if (!skb)
+                goto no_frame;
+
+        status = IEEE80211_SKB_RXCB(skb);
+
+        /* release the reordered frames to stack */
+        sband = hw->wiphy->bands[status->band];
+        if (!(status->flag & RX_FLAG_HT))
+                rate = &sband->bitrates[status->rate_idx];
+        tid_agg_rx->stored_mpdu_num--;
+        tid_agg_rx->reorder_buf[index] = NULL;
+        skb_queue_tail(frames, skb);
+
+no_frame:
+        tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
+}
+
+static void ieee80211_release_reorder_frames(struct ieee80211_hw *hw,
+                                             struct tid_ampdu_rx *tid_agg_rx,
+                                             u16 head_seq_num,
+                                             struct sk_buff_head *frames)
+{
+        int index;
+
+        while (seq_less(tid_agg_rx->head_seq_num, head_seq_num)) {
+                index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
+                                                        tid_agg_rx->buf_size;
+                ieee80211_release_reorder_frame(hw, tid_agg_rx, index, frames);
+        }
+}
+
+/*
+ * Timeout (in jiffies) for skb's that are waiting in the RX reorder buffer. If
+ * the skb was added to the buffer longer than this time ago, the earlier
+ * frames that have not yet been received are assumed to be lost and the skb
+ * can be released for processing. This may also release other skb's from the
+ * reorder buffer if there are no additional gaps between the frames.
+ */
+#define HT_RX_REORDER_BUF_TIMEOUT (HZ / 10)
+
+/*
+ * As this function belongs to the RX path it must be under
+ * rcu_read_lock protection. It returns false if the frame
+ * can be processed immediately, true if it was consumed.
+ */
+static bool ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
+                                             struct tid_ampdu_rx *tid_agg_rx,
+                                             struct sk_buff *skb,
+                                             struct sk_buff_head *frames)
+{
+        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+        u16 sc = le16_to_cpu(hdr->seq_ctrl);
+        u16 mpdu_seq_num = (sc & IEEE80211_SCTL_SEQ) >> 4;
+        u16 head_seq_num, buf_size;
+        int index;
+
+        buf_size = tid_agg_rx->buf_size;
+        head_seq_num = tid_agg_rx->head_seq_num;
+
+        /* frame with out of date sequence number */
+        if (seq_less(mpdu_seq_num, head_seq_num)) {
+                dev_kfree_skb(skb);
+                return true;
+        }
+
+        /*
+         * If frame the sequence number exceeds our buffering window
+         * size release some previous frames to make room for this one.
+         */
+        if (!seq_less(mpdu_seq_num, head_seq_num + buf_size)) {
+                head_seq_num = seq_inc(seq_sub(mpdu_seq_num, buf_size));
+                /* release stored frames up to new head to stack */
+                ieee80211_release_reorder_frames(hw, tid_agg_rx, head_seq_num,
+                                                 frames);
+        }
+
+        /* Now the new frame is always in the range of the reordering buffer */
+
+        index = seq_sub(mpdu_seq_num, tid_agg_rx->ssn) % tid_agg_rx->buf_size;
+
+        /* check if we already stored this frame */
+        if (tid_agg_rx->reorder_buf[index]) {
+                dev_kfree_skb(skb);
+                return true;
+        }
+
+        /*
+         * If the current MPDU is in the right order and nothing else
+         * is stored we can process it directly, no need to buffer it.
+         */
+        if (mpdu_seq_num == tid_agg_rx->head_seq_num &&
+            tid_agg_rx->stored_mpdu_num == 0) {
+                tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
+                return false;
+        }
+
+        /* put the frame in the reordering buffer */
+        tid_agg_rx->reorder_buf[index] = skb;
+        tid_agg_rx->reorder_time[index] = jiffies;
+        tid_agg_rx->stored_mpdu_num++;
+        /* release the buffer until next missing frame */
+        index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
+                                                tid_agg_rx->buf_size;
+        if (!tid_agg_rx->reorder_buf[index] &&
+            tid_agg_rx->stored_mpdu_num > 1) {
+                /*
+                 * No buffers ready to be released, but check whether any
+                 * frames in the reorder buffer have timed out.
+                 */
+                int j;
+                int skipped = 1;
+                for (j = (index + 1) % tid_agg_rx->buf_size; j != index;
+                     j = (j + 1) % tid_agg_rx->buf_size) {
+                        if (!tid_agg_rx->reorder_buf[j]) {
+                                skipped++;
+                                continue;
+                        }
+                        if (!time_after(jiffies, tid_agg_rx->reorder_time[j] +
+                                        HT_RX_REORDER_BUF_TIMEOUT))
+                                break;
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+                        if (net_ratelimit())
+                                printk(KERN_DEBUG "%s: release an RX reorder "
+                                       "frame due to timeout on earlier "
+                                       "frames\n",
+                                       wiphy_name(hw->wiphy));
+#endif
+                        ieee80211_release_reorder_frame(hw, tid_agg_rx,
+                                                        j, frames);
+
+                        /*
+                         * Increment the head seq# also for the skipped slots.
+                         */
+                        tid_agg_rx->head_seq_num =
+                                (tid_agg_rx->head_seq_num + skipped) & SEQ_MASK;
+                        skipped = 0;
+                }
+        } else while (tid_agg_rx->reorder_buf[index]) {
+                ieee80211_release_reorder_frame(hw, tid_agg_rx, index, frames);
+                index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
+                                                        tid_agg_rx->buf_size;
+        }
+
+        return true;
+}
+
+/*
+ * Reorder MPDUs from A-MPDUs, keeping them on a buffer. Returns
+ * true if the MPDU was buffered, false if it should be processed.
+ */
+static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx,
+                                       struct sk_buff_head *frames)
+{
+        struct sk_buff *skb = rx->skb;
+        struct ieee80211_local *local = rx->local;
+        struct ieee80211_hw *hw = &local->hw;
+        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+        struct sta_info *sta = rx->sta;
+        struct tid_ampdu_rx *tid_agg_rx;
+        u16 sc;
+        int tid;
+
+        if (!ieee80211_is_data_qos(hdr->frame_control))
+                goto dont_reorder;
+
+        /*
+         * filter the QoS data rx stream according to
+         * STA/TID and check if this STA/TID is on aggregation
+         */
+
+        if (!sta)
+                goto dont_reorder;
+
+        tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+
+        if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
+                goto dont_reorder;
+
+        tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
+
+        /* qos null data frames are excluded */
+        if (unlikely(hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_NULLFUNC)))
+                goto dont_reorder;
+
+        /* new, potentially un-ordered, ampdu frame - process it */
+
+        /* reset session timer */
+        if (tid_agg_rx->timeout)
+                mod_timer(&tid_agg_rx->session_timer,
+                          TU_TO_EXP_TIME(tid_agg_rx->timeout));
+
+        /* if this mpdu is fragmented - terminate rx aggregation session */
+        sc = le16_to_cpu(hdr->seq_ctrl);
+        if (sc & IEEE80211_SCTL_FRAG) {
+                ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->sta.addr,
+                        tid, 0, WLAN_REASON_QSTA_REQUIRE_SETUP);
+                dev_kfree_skb(skb);
+                return;
+        }
+
+        if (ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb, frames))
+                return;
+
+ dont_reorder:
+        __skb_queue_tail(frames, skb);
+}
 
 static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
@@ -637,6 +869,9 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
         if (!(rx->flags & IEEE80211_RX_RA_MATCH))
                 return RX_CONTINUE;
 
+        /* start without a key */
+        rx->key = NULL;
+
         if (rx->sta)
                 stakey = rcu_dereference(rx->sta->key);
 
@@ -1589,7 +1824,7 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
 }
 
 static ieee80211_rx_result debug_noinline
-ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
+ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
 {
         struct ieee80211_local *local = rx->local;
         struct ieee80211_hw *hw = &local->hw;
@@ -1619,7 +1854,8 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
                                   TU_TO_EXP_TIME(tid_agg_rx->timeout));
 
                 /* release stored frames up to start of BAR */
-                ieee80211_release_reorder_frames(hw, tid_agg_rx, start_seq_num);
+                ieee80211_release_reorder_frames(hw, tid_agg_rx, start_seq_num,
+                                                 frames);
                 kfree_skb(skb);
                 return RX_QUEUED;
         }
@@ -1868,7 +2104,7 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx,
         struct net_device *prev_dev = NULL;
         struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
 
-        if (rx->flags & IEEE80211_RX_CMNTR_REPORTED)
+        if (status->flag & RX_FLAG_INTERNAL_CMTR)
                 goto out_free_skb;
 
         if (skb_headroom(skb) < sizeof(*rthdr) &&
@@ -1929,7 +2165,7 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx,
         } else
                 goto out_free_skb;
 
-        rx->flags |= IEEE80211_RX_CMNTR_REPORTED;
+        status->flag |= RX_FLAG_INTERNAL_CMTR;
         return;
 
  out_free_skb:
@@ -1942,8 +2178,11 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
                                          struct sk_buff *skb,
                                          struct ieee80211_rate *rate)
 {
+        struct sk_buff_head reorder_release;
         ieee80211_rx_result res = RX_DROP_MONITOR;
 
+        __skb_queue_head_init(&reorder_release);
+
         rx->skb = skb;
         rx->sdata = sdata;
 
@@ -1951,50 +2190,72 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
         do {                            \
                 res = rxh(rx);          \
                 if (res != RX_CONTINUE) \
-                        goto rxh_done;  \
+                        goto rxh_next;  \
         } while (0);
 
+        /*
+         * NB: the rxh_next label works even if we jump
+         *     to it from here because then the list will
+         *     be empty, which is a trivial check
+         */
         CALL_RXH(ieee80211_rx_h_passive_scan)
         CALL_RXH(ieee80211_rx_h_check)
-        CALL_RXH(ieee80211_rx_h_decrypt)
-        CALL_RXH(ieee80211_rx_h_check_more_data)
-        CALL_RXH(ieee80211_rx_h_sta_process)
-        CALL_RXH(ieee80211_rx_h_defragment)
-        CALL_RXH(ieee80211_rx_h_ps_poll)
-        CALL_RXH(ieee80211_rx_h_michael_mic_verify)
-        /* must be after MMIC verify so header is counted in MPDU mic */
-        CALL_RXH(ieee80211_rx_h_remove_qos_control)
-        CALL_RXH(ieee80211_rx_h_amsdu)
+
+        ieee80211_rx_reorder_ampdu(rx, &reorder_release);
+
+        while ((skb = __skb_dequeue(&reorder_release))) {
+                /*
+                 * all the other fields are valid across frames
+                 * that belong to an aMPDU since they are on the
+                 * same TID from the same station
+                 */
+                rx->skb = skb;
+
+                CALL_RXH(ieee80211_rx_h_decrypt)
+                CALL_RXH(ieee80211_rx_h_check_more_data)
+                CALL_RXH(ieee80211_rx_h_sta_process)
+                CALL_RXH(ieee80211_rx_h_defragment)
+                CALL_RXH(ieee80211_rx_h_ps_poll)
+                CALL_RXH(ieee80211_rx_h_michael_mic_verify)
+                /* must be after MMIC verify so header is counted in MPDU mic */
+                CALL_RXH(ieee80211_rx_h_remove_qos_control)
+                CALL_RXH(ieee80211_rx_h_amsdu)
 #ifdef CONFIG_MAC80211_MESH
-        if (ieee80211_vif_is_mesh(&sdata->vif))
-                CALL_RXH(ieee80211_rx_h_mesh_fwding);
+                if (ieee80211_vif_is_mesh(&sdata->vif))
+                        CALL_RXH(ieee80211_rx_h_mesh_fwding);
 #endif
-        CALL_RXH(ieee80211_rx_h_data)
-        CALL_RXH(ieee80211_rx_h_ctrl)
-        CALL_RXH(ieee80211_rx_h_action)
-        CALL_RXH(ieee80211_rx_h_mgmt)
+                CALL_RXH(ieee80211_rx_h_data)
+
+                /* special treatment -- needs the queue */
+                res = ieee80211_rx_h_ctrl(rx, &reorder_release);
+                if (res != RX_CONTINUE)
+                        goto rxh_next;
+
+                CALL_RXH(ieee80211_rx_h_action)
+                CALL_RXH(ieee80211_rx_h_mgmt)
 
 #undef CALL_RXH
 
- rxh_done:
-        switch (res) {
-        case RX_DROP_MONITOR:
-                I802_DEBUG_INC(sdata->local->rx_handlers_drop);
-                if (rx->sta)
-                        rx->sta->rx_dropped++;
-                /* fall through */
-        case RX_CONTINUE:
-                ieee80211_rx_cooked_monitor(rx, rate);
-                break;
-        case RX_DROP_UNUSABLE:
-                I802_DEBUG_INC(sdata->local->rx_handlers_drop);
-                if (rx->sta)
-                        rx->sta->rx_dropped++;
-                dev_kfree_skb(rx->skb);
-                break;
-        case RX_QUEUED:
-                I802_DEBUG_INC(sdata->local->rx_handlers_queued);
-                break;
+ rxh_next:
+                switch (res) {
+                case RX_DROP_MONITOR:
+                        I802_DEBUG_INC(sdata->local->rx_handlers_drop);
+                        if (rx->sta)
+                                rx->sta->rx_dropped++;
+                        /* fall through */
+                case RX_CONTINUE:
+                        ieee80211_rx_cooked_monitor(rx, rate);
+                        break;
+                case RX_DROP_UNUSABLE:
+                        I802_DEBUG_INC(sdata->local->rx_handlers_drop);
+                        if (rx->sta)
+                                rx->sta->rx_dropped++;
+                        dev_kfree_skb(rx->skb);
+                        break;
+                case RX_QUEUED:
+                        I802_DEBUG_INC(sdata->local->rx_handlers_queued);
+                        break;
+                }
         }
 }
 
@@ -2187,233 +2448,6 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
                 dev_kfree_skb(skb);
 }
 
-#define SEQ_MODULO 0x1000
-#define SEQ_MASK   0xfff
-
-static inline int seq_less(u16 sq1, u16 sq2)
-{
-        return ((sq1 - sq2) & SEQ_MASK) > (SEQ_MODULO >> 1);
-}
-
-static inline u16 seq_inc(u16 sq)
-{
-        return (sq + 1) & SEQ_MASK;
-}
-
-static inline u16 seq_sub(u16 sq1, u16 sq2)
-{
-        return (sq1 - sq2) & SEQ_MASK;
-}
-
-
-static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw,
-                                            struct tid_ampdu_rx *tid_agg_rx,
-                                            int index)
-{
-        struct ieee80211_supported_band *sband;
-        struct ieee80211_rate *rate = NULL;
-        struct sk_buff *skb = tid_agg_rx->reorder_buf[index];
-        struct ieee80211_rx_status *status;
-
-        if (!skb)
-                goto no_frame;
-
-        status = IEEE80211_SKB_RXCB(skb);
-
-        /* release the reordered frames to stack */
-        sband = hw->wiphy->bands[status->band];
-        if (!(status->flag & RX_FLAG_HT))
-                rate = &sband->bitrates[status->rate_idx];
-        __ieee80211_rx_handle_packet(hw, skb, rate);
-        tid_agg_rx->stored_mpdu_num--;
-        tid_agg_rx->reorder_buf[index] = NULL;
-
-no_frame:
-        tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
-}
-
-static void ieee80211_release_reorder_frames(struct ieee80211_hw *hw,
-                                             struct tid_ampdu_rx *tid_agg_rx,
-                                             u16 head_seq_num)
-{
-        int index;
-
-        while (seq_less(tid_agg_rx->head_seq_num, head_seq_num)) {
-                index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
-                                                        tid_agg_rx->buf_size;
-                ieee80211_release_reorder_frame(hw, tid_agg_rx, index);
-        }
-}
-
-/*
- * Timeout (in jiffies) for skb's that are waiting in the RX reorder buffer. If
- * the skb was added to the buffer longer than this time ago, the earlier
- * frames that have not yet been received are assumed to be lost and the skb
- * can be released for processing. This may also release other skb's from the
- * reorder buffer if there are no additional gaps between the frames.
- */
-#define HT_RX_REORDER_BUF_TIMEOUT (HZ / 10)
-
-/*
- * As this function belongs to the RX path it must be under
- * rcu_read_lock protection. It returns false if the frame
- * can be processed immediately, true if it was consumed.
- */
-static bool ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
-                                             struct tid_ampdu_rx *tid_agg_rx,
-                                             struct sk_buff *skb)
-{
-        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-        u16 sc = le16_to_cpu(hdr->seq_ctrl);
-        u16 mpdu_seq_num = (sc & IEEE80211_SCTL_SEQ) >> 4;
-        u16 head_seq_num, buf_size;
-        int index;
-
-        buf_size = tid_agg_rx->buf_size;
-        head_seq_num = tid_agg_rx->head_seq_num;
-
-        /* frame with out of date sequence number */
-        if (seq_less(mpdu_seq_num, head_seq_num)) {
-                dev_kfree_skb(skb);
-                return true;
-        }
-
-        /*
-         * If frame the sequence number exceeds our buffering window
-         * size release some previous frames to make room for this one.
-         */
-        if (!seq_less(mpdu_seq_num, head_seq_num + buf_size)) {
-                head_seq_num = seq_inc(seq_sub(mpdu_seq_num, buf_size));
-                /* release stored frames up to new head to stack */
-                ieee80211_release_reorder_frames(hw, tid_agg_rx, head_seq_num);
-        }
-
-        /* Now the new frame is always in the range of the reordering buffer */
-
-        index = seq_sub(mpdu_seq_num, tid_agg_rx->ssn) % tid_agg_rx->buf_size;
-
-        /* check if we already stored this frame */
-        if (tid_agg_rx->reorder_buf[index]) {
-                dev_kfree_skb(skb);
-                return true;
-        }
-
-        /*
-         * If the current MPDU is in the right order and nothing else
-         * is stored we can process it directly, no need to buffer it.
-         */
-        if (mpdu_seq_num == tid_agg_rx->head_seq_num &&
-            tid_agg_rx->stored_mpdu_num == 0) {
-                tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
-                return false;
-        }
-
-        /* put the frame in the reordering buffer */
-        tid_agg_rx->reorder_buf[index] = skb;
-        tid_agg_rx->reorder_time[index] = jiffies;
-        tid_agg_rx->stored_mpdu_num++;
-        /* release the buffer until next missing frame */
-        index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
-                                                tid_agg_rx->buf_size;
-        if (!tid_agg_rx->reorder_buf[index] &&
-            tid_agg_rx->stored_mpdu_num > 1) {
-                /*
-                 * No buffers ready to be released, but check whether any
-                 * frames in the reorder buffer have timed out.
-                 */
-                int j;
-                int skipped = 1;
-                for (j = (index + 1) % tid_agg_rx->buf_size; j != index;
-                     j = (j + 1) % tid_agg_rx->buf_size) {
-                        if (!tid_agg_rx->reorder_buf[j]) {
-                                skipped++;
-                                continue;
-                        }
-                        if (!time_after(jiffies, tid_agg_rx->reorder_time[j] +
-                                        HT_RX_REORDER_BUF_TIMEOUT))
-                                break;
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
-                        if (net_ratelimit())
-                                printk(KERN_DEBUG "%s: release an RX reorder "
-                                       "frame due to timeout on earlier "
-                                       "frames\n",
-                                       wiphy_name(hw->wiphy));
-#endif
-                        ieee80211_release_reorder_frame(hw, tid_agg_rx, j);
-
-                        /*
-                         * Increment the head seq# also for the skipped slots.
-                         */
-                        tid_agg_rx->head_seq_num =
-                                (tid_agg_rx->head_seq_num + skipped) & SEQ_MASK;
-                        skipped = 0;
-                }
-        } else while (tid_agg_rx->reorder_buf[index]) {
-                ieee80211_release_reorder_frame(hw, tid_agg_rx, index);
-                index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
-                                                        tid_agg_rx->buf_size;
-        }
-
-        return true;
-}
-
-/*
- * Reorder MPDUs from A-MPDUs, keeping them on a buffer. Returns
- * true if the MPDU was buffered, false if it should be processed.
- */
-static bool ieee80211_rx_reorder_ampdu(struct ieee80211_local *local,
-                                       struct sk_buff *skb)
-{
-        struct ieee80211_hw *hw = &local->hw;
-        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-        struct sta_info *sta;
-        struct tid_ampdu_rx *tid_agg_rx;
-        u16 sc;
-        int tid;
-
-        if (!ieee80211_is_data_qos(hdr->frame_control))
-                return false;
-
-        /*
-         * filter the QoS data rx stream according to
-         * STA/TID and check if this STA/TID is on aggregation
-         */
-
-        sta = sta_info_get(local, hdr->addr2);
-        if (!sta)
-                return false;
-
-        tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
-
-        if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
-                return false;
-
-        tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
-
-        /* qos null data frames are excluded */
-        if (unlikely(hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_NULLFUNC)))
-                return false;
-
-        /* new, potentially un-ordered, ampdu frame - process it */
-
-        /* reset session timer */
-        if (tid_agg_rx->timeout)
-                mod_timer(&tid_agg_rx->session_timer,
-                          TU_TO_EXP_TIME(tid_agg_rx->timeout));
-
-        /* if this mpdu is fragmented - terminate rx aggregation session */
-        sc = le16_to_cpu(hdr->seq_ctrl);
-        if (sc & IEEE80211_SCTL_FRAG) {
-                ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->sta.addr,
-                        tid, 0, WLAN_REASON_QSTA_REQUIRE_SETUP);
-                dev_kfree_skb(skb);
-                return true;
-        }
-
-        return ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb);
-}
-
 /*
  * This is the receive path handler. It is called by a low level driver when an
  * 802.11 MPDU is received from the hardware.
@@ -2495,20 +2529,7 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
                 return;
         }
 
-        /*
-         * In theory, the block ack reordering should happen after duplicate
-         * removal (ieee80211_rx_h_check(), which is an RX handler). As such,
-         * the call to ieee80211_rx_reorder_ampdu() should really be moved to
-         * happen as a new RX handler between ieee80211_rx_h_check and
-         * ieee80211_rx_h_decrypt. This cleanup may eventually happen, but for
-         * the time being, the call can be here since RX reorder buf processing
-         * will implicitly skip duplicates. We could, in theory at least,
-         * process frames that ieee80211_rx_h_passive_scan would drop (e.g.,
-         * frames from other than operational channel), but that should not
-         * happen in normal networks.
-         */
-        if (!ieee80211_rx_reorder_ampdu(local, skb))
-                __ieee80211_rx_handle_packet(hw, skb, rate);
+        __ieee80211_rx_handle_packet(hw, skb, rate);
 
         rcu_read_unlock();