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Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r--net/mac80211/tx.c146
1 files changed, 107 insertions, 39 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index eaa4118de98..3ad053f6de1 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -317,12 +317,11 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
if (!atomic_read(&tx->sdata->bss->num_sta_ps))
return TX_CONTINUE;
- /* buffered in hardware */
- if (!(tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)) {
- info->flags |= IEEE80211_TX_CTL_SEND_AFTER_DTIM;
+ info->flags |= IEEE80211_TX_CTL_SEND_AFTER_DTIM;
+ /* device releases frame after DTIM beacon */
+ if (!(tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING))
return TX_CONTINUE;
- }
/* buffered in mac80211 */
if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
@@ -375,7 +374,7 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
staflags = get_sta_flags(sta);
- if (unlikely((staflags & WLAN_STA_PS) &&
+ if (unlikely((staflags & (WLAN_STA_PS_STA | WLAN_STA_PS_DRIVER)) &&
!(info->flags & IEEE80211_TX_CTL_PSPOLL_RESPONSE))) {
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "STA %pM aid %d: PS buffer (entries "
@@ -398,8 +397,13 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
} else
tx->local->total_ps_buffered++;
- /* Queue frame to be sent after STA sends an PS Poll frame */
- if (skb_queue_empty(&sta->ps_tx_buf))
+ /*
+ * Queue frame to be sent after STA wakes up/polls,
+ * but don't set the TIM bit if the driver is blocking
+ * wakeup or poll response transmissions anyway.
+ */
+ if (skb_queue_empty(&sta->ps_tx_buf) &&
+ !(staflags & WLAN_STA_PS_DRIVER))
sta_info_set_tim_bit(sta);
info->control.jiffies = jiffies;
@@ -409,7 +413,7 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
return TX_QUEUED;
}
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- else if (unlikely(test_sta_flags(sta, WLAN_STA_PS))) {
+ else if (unlikely(staflags & WLAN_STA_PS_STA)) {
printk(KERN_DEBUG "%s: STA %pM in PS mode, but pspoll "
"set -> send frame\n", tx->dev->name,
sta->sta.addr);
@@ -1047,7 +1051,10 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
hdr = (struct ieee80211_hdr *) skb->data;
- tx->sta = sta_info_get(local, hdr->addr1);
+ if ((sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && sdata->use_4addr)
+ tx->sta = rcu_dereference(sdata->u.vlan.sta);
+ if (!tx->sta)
+ tx->sta = sta_info_get(local, hdr->addr1);
if (tx->sta && ieee80211_is_data_qos(hdr->frame_control) &&
(local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)) {
@@ -1201,23 +1208,25 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
struct sk_buff *skb = tx->skb;
ieee80211_tx_result res = TX_DROP;
-#define CALL_TXH(txh) \
- res = txh(tx); \
- if (res != TX_CONTINUE) \
- goto txh_done;
-
- CALL_TXH(ieee80211_tx_h_check_assoc)
- CALL_TXH(ieee80211_tx_h_ps_buf)
- CALL_TXH(ieee80211_tx_h_select_key)
- CALL_TXH(ieee80211_tx_h_michael_mic_add)
- CALL_TXH(ieee80211_tx_h_rate_ctrl)
- CALL_TXH(ieee80211_tx_h_misc)
- CALL_TXH(ieee80211_tx_h_sequence)
- CALL_TXH(ieee80211_tx_h_fragment)
+#define CALL_TXH(txh) \
+ do { \
+ res = txh(tx); \
+ if (res != TX_CONTINUE) \
+ goto txh_done; \
+ } while (0)
+
+ CALL_TXH(ieee80211_tx_h_check_assoc);
+ CALL_TXH(ieee80211_tx_h_ps_buf);
+ CALL_TXH(ieee80211_tx_h_select_key);
+ CALL_TXH(ieee80211_tx_h_michael_mic_add);
+ CALL_TXH(ieee80211_tx_h_rate_ctrl);
+ CALL_TXH(ieee80211_tx_h_misc);
+ CALL_TXH(ieee80211_tx_h_sequence);
+ CALL_TXH(ieee80211_tx_h_fragment);
/* handlers after fragment must be aware of tx info fragmentation! */
- CALL_TXH(ieee80211_tx_h_stats)
- CALL_TXH(ieee80211_tx_h_encrypt)
- CALL_TXH(ieee80211_tx_h_calculate_duration)
+ CALL_TXH(ieee80211_tx_h_stats);
+ CALL_TXH(ieee80211_tx_h_encrypt);
+ CALL_TXH(ieee80211_tx_h_calculate_duration);
#undef CALL_TXH
txh_done:
@@ -1387,6 +1396,30 @@ static int ieee80211_skb_resize(struct ieee80211_local *local,
return 0;
}
+static bool need_dynamic_ps(struct ieee80211_local *local)
+{
+ /* driver doesn't support power save */
+ if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
+ return false;
+
+ /* hardware does dynamic power save */
+ if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
+ return false;
+
+ /* dynamic power save disabled */
+ if (local->hw.conf.dynamic_ps_timeout <= 0)
+ return false;
+
+ /* we are scanning, don't enable power save */
+ if (local->scanning)
+ return false;
+
+ if (!local->ps_sdata)
+ return false;
+
+ return true;
+}
+
static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
{
@@ -1399,9 +1432,7 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
dev_hold(sdata->dev);
- if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
- local->hw.conf.dynamic_ps_timeout > 0 &&
- !(local->scanning) && local->ps_sdata) {
+ if (need_dynamic_ps(local)) {
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
ieee80211_stop_queues_by_reason(&local->hw,
IEEE80211_QUEUE_STOP_REASON_PS);
@@ -1585,7 +1616,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
const u8 *encaps_data;
int encaps_len, skip_header_bytes;
int nh_pos, h_pos;
- struct sta_info *sta;
+ struct sta_info *sta = NULL;
u32 sta_flags = 0;
if (unlikely(skb->len < ETH_HLEN)) {
@@ -1602,8 +1633,25 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
switch (sdata->vif.type) {
- case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
+ rcu_read_lock();
+ if (sdata->use_4addr)
+ sta = rcu_dereference(sdata->u.vlan.sta);
+ if (sta) {
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
+ /* RA TA DA SA */
+ memcpy(hdr.addr1, sta->sta.addr, ETH_ALEN);
+ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+ hdrlen = 30;
+ sta_flags = get_sta_flags(sta);
+ }
+ rcu_read_unlock();
+ if (sta)
+ break;
+ /* fall through */
+ case NL80211_IFTYPE_AP:
fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
/* DA BSSID SA */
memcpy(hdr.addr1, skb->data, ETH_ALEN);
@@ -1677,12 +1725,21 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
break;
#endif
case NL80211_IFTYPE_STATION:
- fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
- /* BSSID SA DA */
memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN);
- memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
- memcpy(hdr.addr3, skb->data, ETH_ALEN);
- hdrlen = 24;
+ if (sdata->use_4addr && ethertype != ETH_P_PAE) {
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
+ /* RA TA DA SA */
+ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+ hdrlen = 30;
+ } else {
+ fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
+ /* BSSID SA DA */
+ memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ hdrlen = 24;
+ }
break;
case NL80211_IFTYPE_ADHOC:
/* DA SA BSSID */
@@ -1990,8 +2047,9 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
}
}
-struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
+struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u16 *tim_offset, u16 *tim_length)
{
struct ieee80211_local *local = hw_to_local(hw);
struct sk_buff *skb = NULL;
@@ -2008,6 +2066,11 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
sdata = vif_to_sdata(vif);
+ if (tim_offset)
+ *tim_offset = 0;
+ if (tim_length)
+ *tim_length = 0;
+
if (sdata->vif.type == NL80211_IFTYPE_AP) {
ap = &sdata->u.ap;
beacon = rcu_dereference(ap->beacon);
@@ -2043,6 +2106,11 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
spin_unlock_irqrestore(&local->sta_lock, flags);
}
+ if (tim_offset)
+ *tim_offset = beacon->head_len;
+ if (tim_length)
+ *tim_length = skb->len - beacon->head_len;
+
if (beacon->tail)
memcpy(skb_put(skb, beacon->tail_len),
beacon->tail, beacon->tail_len);
@@ -2080,7 +2148,7 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
memset(mgmt->da, 0xff, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- /* BSSID is left zeroed, wildcard value */
+ memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
mgmt->u.beacon.beacon_int =
cpu_to_le16(sdata->vif.bss_conf.beacon_int);
mgmt->u.beacon.capab_info = 0x0; /* 0x0 for MPs */
@@ -2119,7 +2187,7 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
rcu_read_unlock();
return skb;
}
-EXPORT_SYMBOL(ieee80211_beacon_get);
+EXPORT_SYMBOL(ieee80211_beacon_get_tim);
void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
const void *frame, size_t frame_len,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-08 09:18:01 +0000