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-rw-r--r--net/mac80211/ieee80211_i.h3
-rw-r--r--net/mac80211/rx.c62
-rw-r--r--net/mac80211/util.c15
3 files changed, 74 insertions, 6 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 740d69d5bbd..662e69ef7ee 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -801,7 +801,8 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
extern void *mac80211_wiphy_privid; /* for wiphy privid */
extern const unsigned char rfc1042_header[6];
extern const unsigned char bridge_tunnel_header[6];
-u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len);
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
+ enum ieee80211_if_types type);
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble);
void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index e7b1eb8da25..ed3b8163920 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -24,6 +24,10 @@
#include "tkip.h"
#include "wme.h"
+u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
+ struct tid_ampdu_rx *tid_agg_rx,
+ struct sk_buff *skb, u16 mpdu_seq_num,
+ int bar_req);
/*
* monitor mode reception
*
@@ -64,7 +68,9 @@ static inline int should_drop_frame(struct ieee80211_rx_status *status,
if (((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
cpu_to_le16(IEEE80211_FTYPE_CTL)) &&
((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
- cpu_to_le16(IEEE80211_STYPE_PSPOLL)))
+ cpu_to_le16(IEEE80211_STYPE_PSPOLL)) &&
+ ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
+ cpu_to_le16(IEEE80211_STYPE_BACK_REQ)))
return 1;
return 0;
}
@@ -634,7 +640,8 @@ ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
* BSSID to avoid keeping the current IBSS network alive in cases where
* other STAs are using different BSSID. */
if (rx->sdata->type == IEEE80211_IF_TYPE_IBSS) {
- u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len);
+ u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
+ IEEE80211_IF_TYPE_IBSS);
if (compare_ether_addr(bssid, rx->sdata->u.sta.bssid) == 0)
sta->last_rx = jiffies;
} else
@@ -1377,6 +1384,49 @@ ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
}
static ieee80211_txrx_result
+ieee80211_rx_h_ctrl(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_local *local = rx->local;
+ struct ieee80211_hw *hw = &local->hw;
+ struct sk_buff *skb = rx->skb;
+ struct ieee80211_bar *bar = (struct ieee80211_bar *) skb->data;
+ struct tid_ampdu_rx *tid_agg_rx;
+ u16 start_seq_num;
+ u16 tid;
+
+ if (likely((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL))
+ return TXRX_CONTINUE;
+
+ if ((rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BACK_REQ) {
+ if (!rx->sta)
+ return TXRX_CONTINUE;
+ tid = le16_to_cpu(bar->control) >> 12;
+ tid_agg_rx = &(rx->sta->ampdu_mlme.tid_rx[tid]);
+ if (tid_agg_rx->state != HT_AGG_STATE_OPERATIONAL)
+ return TXRX_CONTINUE;
+
+ start_seq_num = le16_to_cpu(bar->start_seq_num) >> 4;
+
+ /* reset session timer */
+ if (tid_agg_rx->timeout) {
+ unsigned long expires =
+ jiffies + (tid_agg_rx->timeout / 1000) * HZ;
+ mod_timer(&tid_agg_rx->session_timer, expires);
+ }
+
+ /* manage reordering buffer according to requested */
+ /* sequence number */
+ rcu_read_lock();
+ ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, NULL,
+ start_seq_num, 1);
+ rcu_read_unlock();
+ return TXRX_DROP;
+ }
+
+ return TXRX_CONTINUE;
+}
+
+static ieee80211_txrx_result
ieee80211_rx_h_mgmt(struct ieee80211_txrx_data *rx)
{
struct ieee80211_sub_if_data *sdata;
@@ -1527,6 +1577,7 @@ ieee80211_rx_handler ieee80211_rx_handlers[] =
ieee80211_rx_h_remove_qos_control,
ieee80211_rx_h_amsdu,
ieee80211_rx_h_data,
+ ieee80211_rx_h_ctrl,
ieee80211_rx_h_mgmt,
NULL
};
@@ -1683,8 +1734,6 @@ void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, struct sk_buff *skb,
return;
}
- bssid = ieee80211_get_bssid(hdr, skb->len);
-
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (!netif_running(sdata->dev))
continue;
@@ -1692,6 +1741,7 @@ void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, struct sk_buff *skb,
if (sdata->type == IEEE80211_IF_TYPE_MNTR)
continue;
+ bssid = ieee80211_get_bssid(hdr, skb->len, sdata->type);
rx.flags |= IEEE80211_TXRXD_RXRA_MATCH;
prepares = prepare_for_handlers(sdata, bssid, &rx, hdr);
/* prepare_for_handlers can change sta */
@@ -1767,6 +1817,10 @@ static inline u16 seq_sub(u16 sq1, u16 sq2)
}
+/*
+ * As it function blongs to Rx path it must be called with
+ * the proper rcu_read_lock protection for its flow.
+ */
u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
struct tid_ampdu_rx *tid_agg_rx,
struct sk_buff *skb, u16 mpdu_seq_num,
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 2b02b2b9d64..adb85dd5098 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -127,7 +127,8 @@ void ieee80211_prepare_rates(struct ieee80211_local *local,
}
}
-u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
+ enum ieee80211_if_types type)
{
u16 fc;
@@ -159,6 +160,18 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
case IEEE80211_FTYPE_CTL:
if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
return hdr->addr1;
+ else if ((fc & IEEE80211_FCTL_STYPE) ==
+ IEEE80211_STYPE_BACK_REQ) {
+ switch (type) {
+ case IEEE80211_IF_TYPE_STA:
+ return hdr->addr2;
+ case IEEE80211_IF_TYPE_AP:
+ case IEEE80211_IF_TYPE_VLAN:
+ return hdr->addr1;
+ default:
+ return NULL;
+ }
+ }
else
return NULL;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 18:19:33 +0000