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Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r--net/mac80211/tx.c1365
1 files changed, 845 insertions, 520 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index e05667cd5e7..1a252c606ad 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -19,6 +19,7 @@
#include <linux/bitmap.h>
#include <linux/rcupdate.h>
#include <linux/export.h>
+#include <linux/time.h>
#include <net/net_namespace.h>
#include <net/ieee80211_radiotap.h>
#include <net/cfg80211.h>
@@ -40,23 +41,33 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
struct sk_buff *skb, int group_addr,
int next_frag_len)
{
- int rate, mrate, erp, dur, i;
+ int rate, mrate, erp, dur, i, shift = 0;
struct ieee80211_rate *txrate;
struct ieee80211_local *local = tx->local;
struct ieee80211_supported_band *sband;
struct ieee80211_hdr *hdr;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ u32 rate_flags = 0;
+
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(tx->sdata->vif.chanctx_conf);
+ if (chanctx_conf) {
+ shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
+ rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
+ }
+ rcu_read_unlock();
/* assume HW handles this */
- if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
+ if (tx->rate.flags & IEEE80211_TX_RC_MCS)
return 0;
/* uh huh? */
- if (WARN_ON_ONCE(info->control.rates[0].idx < 0))
+ if (WARN_ON_ONCE(tx->rate.idx < 0))
return 0;
- sband = local->hw.wiphy->bands[tx->channel->band];
- txrate = &sband->bitrates[info->control.rates[0].idx];
+ sband = local->hw.wiphy->bands[info->band];
+ txrate = &sband->bitrates[tx->rate.idx];
erp = txrate->flags & IEEE80211_RATE_ERP_G;
@@ -122,8 +133,11 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
if (r->bitrate > txrate->bitrate)
break;
+ if ((rate_flags & r->flags) != rate_flags)
+ continue;
+
if (tx->sdata->vif.bss_conf.basic_rates & BIT(i))
- rate = r->bitrate;
+ rate = DIV_ROUND_UP(r->bitrate, 1 << shift);
switch (sband->band) {
case IEEE80211_BAND_2GHZ: {
@@ -140,6 +154,8 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
if (r->flags & IEEE80211_RATE_MANDATORY_A)
mrate = r->bitrate;
break;
+ case IEEE80211_BAND_60GHZ:
+ /* TODO, for now fall through */
case IEEE80211_NUM_BANDS:
WARN_ON(1);
break;
@@ -148,39 +164,35 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
if (rate == -1) {
/* No matching basic rate found; use highest suitable mandatory
* PHY rate */
- rate = mrate;
+ rate = DIV_ROUND_UP(mrate, 1 << shift);
}
/* Don't calculate ACKs for QoS Frames with NoAck Policy set */
if (ieee80211_is_data_qos(hdr->frame_control) &&
- *(ieee80211_get_qos_ctl(hdr)) | IEEE80211_QOS_CTL_ACK_POLICY_NOACK)
+ *(ieee80211_get_qos_ctl(hdr)) & IEEE80211_QOS_CTL_ACK_POLICY_NOACK)
dur = 0;
else
/* Time needed to transmit ACK
* (10 bytes + 4-byte FCS = 112 bits) plus SIFS; rounded up
* to closest integer */
- dur = ieee80211_frame_duration(local, 10, rate, erp,
- tx->sdata->vif.bss_conf.use_short_preamble);
+ dur = ieee80211_frame_duration(sband->band, 10, rate, erp,
+ tx->sdata->vif.bss_conf.use_short_preamble,
+ shift);
if (next_frag_len) {
/* Frame is fragmented: duration increases with time needed to
* transmit next fragment plus ACK and 2 x SIFS. */
dur *= 2; /* ACK + SIFS */
/* next fragment */
- dur += ieee80211_frame_duration(local, next_frag_len,
+ dur += ieee80211_frame_duration(sband->band, next_frag_len,
txrate->bitrate, erp,
- tx->sdata->vif.bss_conf.use_short_preamble);
+ tx->sdata->vif.bss_conf.use_short_preamble,
+ shift);
}
return cpu_to_le16(dur);
}
-static inline int is_ieee80211_device(struct ieee80211_local *local,
- struct net_device *dev)
-{
- return local == wdev_priv(dev->ieee80211_ptr);
-}
-
/* tx handlers */
static ieee80211_tx_result debug_noinline
ieee80211_tx_h_dynamic_ps(struct ieee80211_tx_data *tx)
@@ -226,17 +238,18 @@ ieee80211_tx_h_dynamic_ps(struct ieee80211_tx_data *tx)
* have correct qos tag for some reason, due the network or the
* peer application.
*
- * Note: local->uapsd_queues access is racy here. If the value is
+ * Note: ifmgd->uapsd_queues access is racy here. If the value is
* changed via debugfs, user needs to reassociate manually to have
* everything in sync.
*/
- if ((ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
- && (local->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
- && skb_get_queue_mapping(tx->skb) == 0)
+ if ((ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) &&
+ (ifmgd->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) &&
+ skb_get_queue_mapping(tx->skb) == IEEE80211_AC_VO)
return TX_CONTINUE;
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
ieee80211_stop_queues_by_reason(&local->hw,
+ IEEE80211_MAX_QUEUE_MAP,
IEEE80211_QUEUE_STOP_REASON_PS);
ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
ieee80211_queue_work(&local->hw,
@@ -297,16 +310,16 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
if (unlikely(!assoc &&
ieee80211_is_data(hdr->frame_control))) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: dropped data frame to not "
- "associated station %pM\n",
- tx->sdata->name, hdr->addr1);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ sdata_info(tx->sdata,
+ "dropped data frame to not associated station %pM\n",
+ hdr->addr1);
+#endif
I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc);
return TX_DROP;
}
} else if (unlikely(tx->sdata->vif.type == NL80211_IFTYPE_AP &&
ieee80211_is_data(hdr->frame_control) &&
- !atomic_read(&tx->sdata->u.ap.num_sta_authorized))) {
+ !atomic_read(&tx->sdata->u.ap.num_mcast_sta))) {
/*
* No associated STAs - no need to send multicast
* frames.
@@ -328,22 +341,22 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
- /*
- * virtual interfaces are protected by RCU
- */
- rcu_read_lock();
-
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
- struct ieee80211_if_ap *ap;
- if (sdata->vif.type != NL80211_IFTYPE_AP)
+ struct ps_data *ps;
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP)
+ ps = &sdata->u.ap.ps;
+ else if (ieee80211_vif_is_mesh(&sdata->vif))
+ ps = &sdata->u.mesh.ps;
+ else
continue;
- ap = &sdata->u.ap;
- skb = skb_dequeue(&ap->ps_bc_buf);
+
+ skb = skb_dequeue(&ps->bc_buf);
if (skb) {
purged++;
dev_kfree_skb(skb);
}
- total += skb_queue_len(&ap->ps_bc_buf);
+ total += skb_queue_len(&ps->bc_buf);
}
/*
@@ -358,19 +371,14 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
total += skb_queue_len(&sta->ps_tx_buf[ac]);
if (skb) {
purged++;
- dev_kfree_skb(skb);
+ ieee80211_free_txskb(&local->hw, skb);
break;
}
}
}
- rcu_read_unlock();
-
local->total_ps_buffered = total;
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- wiphy_debug(local->hw.wiphy, "PS buffers full - purged %d frames\n",
- purged);
-#endif
+ ps_dbg_hw(&local->hw, "PS buffers full - purged %d frames\n", purged);
}
static ieee80211_tx_result
@@ -378,25 +386,42 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
+ struct ps_data *ps;
/*
* broadcast/multicast frame
*
- * If any of the associated stations is in power save mode,
+ * If any of the associated/peer stations is in power save mode,
* the frame is buffered to be sent after DTIM beacon frame.
* This is done either by the hardware or us.
*/
- /* powersaving STAs only in AP/VLAN mode */
- if (!tx->sdata->bss)
+ /* powersaving STAs currently only in AP/VLAN/mesh mode */
+ if (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
+ tx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+ if (!tx->sdata->bss)
+ return TX_CONTINUE;
+
+ ps = &tx->sdata->bss->ps;
+ } else if (ieee80211_vif_is_mesh(&tx->sdata->vif)) {
+ ps = &tx->sdata->u.mesh.ps;
+ } else {
return TX_CONTINUE;
+ }
+
/* no buffering for ordered frames */
if (ieee80211_has_order(hdr->frame_control))
return TX_CONTINUE;
+ if (ieee80211_is_probe_req(hdr->frame_control))
+ return TX_CONTINUE;
+
+ if (tx->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
+ info->hw_queue = tx->sdata->vif.cab_queue;
+
/* no stations in PS mode */
- if (!atomic_read(&tx->sdata->bss->num_sta_ps))
+ if (!atomic_read(&ps->num_sta_ps))
return TX_CONTINUE;
info->flags |= IEEE80211_TX_CTL_SEND_AFTER_DTIM;
@@ -409,17 +434,14 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
purge_old_ps_buffers(tx->local);
- if (skb_queue_len(&tx->sdata->bss->ps_bc_buf) >= AP_MAX_BC_BUFFER) {
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: BC TX buffer full - dropping the oldest frame\n",
- tx->sdata->name);
-#endif
- dev_kfree_skb(skb_dequeue(&tx->sdata->bss->ps_bc_buf));
+ if (skb_queue_len(&ps->bc_buf) >= AP_MAX_BC_BUFFER) {
+ ps_dbg(tx->sdata,
+ "BC TX buffer full - dropping the oldest frame\n");
+ dev_kfree_skb(skb_dequeue(&ps->bc_buf));
} else
tx->local->total_ps_buffered++;
- skb_queue_tail(&tx->sdata->bss->ps_bc_buf, tx->skb);
+ skb_queue_tail(&ps->bc_buf, tx->skb);
return TX_QUEUED;
}
@@ -433,8 +455,7 @@ static int ieee80211_use_mfp(__le16 fc, struct sta_info *sta,
if (sta == NULL || !test_sta_flag(sta, WLAN_STA_MFP))
return 0;
- if (!ieee80211_is_robust_mgmt_frame((struct ieee80211_hdr *)
- skb->data))
+ if (!ieee80211_is_robust_mgmt_frame(skb))
return 0;
return 1;
@@ -448,40 +469,53 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
struct ieee80211_local *local = tx->local;
- if (unlikely(!sta ||
- ieee80211_is_probe_resp(hdr->frame_control) ||
- ieee80211_is_auth(hdr->frame_control) ||
- ieee80211_is_assoc_resp(hdr->frame_control) ||
- ieee80211_is_reassoc_resp(hdr->frame_control)))
+ if (unlikely(!sta))
return TX_CONTINUE;
if (unlikely((test_sta_flag(sta, WLAN_STA_PS_STA) ||
test_sta_flag(sta, WLAN_STA_PS_DRIVER)) &&
- !(info->flags & IEEE80211_TX_CTL_POLL_RESPONSE))) {
+ !(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER))) {
int ac = skb_get_queue_mapping(tx->skb);
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- printk(KERN_DEBUG "STA %pM aid %d: PS buffer for AC %d\n",
+ if (ieee80211_is_mgmt(hdr->frame_control) &&
+ !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) {
+ info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
+ return TX_CONTINUE;
+ }
+
+ ps_dbg(sta->sdata, "STA %pM aid %d: PS buffer for AC %d\n",
sta->sta.addr, sta->sta.aid, ac);
-#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
purge_old_ps_buffers(tx->local);
+
+ /* sync with ieee80211_sta_ps_deliver_wakeup */
+ spin_lock(&sta->ps_lock);
+ /*
+ * STA woke up the meantime and all the frames on ps_tx_buf have
+ * been queued to pending queue. No reordering can happen, go
+ * ahead and Tx the packet.
+ */
+ if (!test_sta_flag(sta, WLAN_STA_PS_STA) &&
+ !test_sta_flag(sta, WLAN_STA_PS_DRIVER)) {
+ spin_unlock(&sta->ps_lock);
+ return TX_CONTINUE;
+ }
+
if (skb_queue_len(&sta->ps_tx_buf[ac]) >= STA_MAX_TX_BUFFER) {
struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf[ac]);
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: STA %pM TX buffer for "
- "AC %d full - dropping oldest frame\n",
- tx->sdata->name, sta->sta.addr, ac);
-#endif
- dev_kfree_skb(old);
+ ps_dbg(tx->sdata,
+ "STA %pM TX buffer for AC %d full - dropping oldest frame\n",
+ sta->sta.addr, ac);
+ ieee80211_free_txskb(&local->hw, old);
} else
tx->local->total_ps_buffered++;
info->control.jiffies = jiffies;
info->control.vif = &tx->sdata->vif;
info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+ info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
skb_queue_tail(&sta->ps_tx_buf[ac], tx->skb);
+ spin_unlock(&sta->ps_lock);
if (!timer_pending(&local->sta_cleanup))
mod_timer(&local->sta_cleanup,
@@ -495,14 +529,11 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
sta_info_recalc_tim(sta);
return TX_QUEUED;
+ } else if (unlikely(test_sta_flag(sta, WLAN_STA_PS_STA))) {
+ ps_dbg(tx->sdata,
+ "STA %pM in PS mode, but polling/in SP -> send frame\n",
+ sta->sta.addr);
}
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- else if (unlikely(test_sta_flag(sta, WLAN_STA_PS_STA))) {
- printk(KERN_DEBUG
- "%s: STA %pM in PS mode, but polling/in SP -> send frame\n",
- tx->sdata->name, sta->sta.addr);
- }
-#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
return TX_CONTINUE;
}
@@ -524,9 +555,11 @@ ieee80211_tx_h_check_control_port_protocol(struct ieee80211_tx_data *tx)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
- if (unlikely(tx->sdata->control_port_protocol == tx->skb->protocol &&
- tx->sdata->control_port_no_encrypt))
- info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ if (unlikely(tx->sdata->control_port_protocol == tx->skb->protocol)) {
+ if (tx->sdata->control_port_no_encrypt)
+ info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ info->control.flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO;
+ }
return TX_CONTINUE;
}
@@ -534,17 +567,18 @@ ieee80211_tx_h_check_control_port_protocol(struct ieee80211_tx_data *tx)
static ieee80211_tx_result debug_noinline
ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
{
- struct ieee80211_key *key = NULL;
+ struct ieee80211_key *key;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
if (unlikely(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT))
tx->key = NULL;
- else if (tx->sta && (key = rcu_dereference(tx->sta->ptk)))
+ else if (tx->sta &&
+ (key = rcu_dereference(tx->sta->ptk[tx->sta->ptk_idx])))
tx->key = key;
else if (ieee80211_is_mgmt(hdr->frame_control) &&
is_multicast_ether_addr(hdr->addr1) &&
- ieee80211_is_robust_mgmt_frame(hdr) &&
+ ieee80211_is_robust_mgmt_frame(tx->skb) &&
(key = rcu_dereference(tx->sdata->default_mgmt_key)))
tx->key = key;
else if (is_multicast_ether_addr(hdr->addr1) &&
@@ -553,16 +587,23 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
else if (!is_multicast_ether_addr(hdr->addr1) &&
(key = rcu_dereference(tx->sdata->default_unicast_key)))
tx->key = key;
- else if (tx->sdata->drop_unencrypted &&
- (tx->skb->protocol != tx->sdata->control_port_protocol) &&
- !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
- (!ieee80211_is_robust_mgmt_frame(hdr) ||
- (ieee80211_is_action(hdr->frame_control) &&
- tx->sta && test_sta_flag(tx->sta, WLAN_STA_MFP)))) {
+ else if (info->flags & IEEE80211_TX_CTL_INJECTED)
+ tx->key = NULL;
+ else if (!tx->sdata->drop_unencrypted)
+ tx->key = NULL;
+ else if (tx->skb->protocol == tx->sdata->control_port_protocol)
+ tx->key = NULL;
+ else if (ieee80211_is_robust_mgmt_frame(tx->skb) &&
+ !(ieee80211_is_action(hdr->frame_control) &&
+ tx->sta && test_sta_flag(tx->sta, WLAN_STA_MFP)))
+ tx->key = NULL;
+ else if (ieee80211_is_mgmt(hdr->frame_control) &&
+ !ieee80211_is_robust_mgmt_frame(tx->skb))
+ tx->key = NULL;
+ else {
I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
return TX_DROP;
- } else
- tx->key = NULL;
+ }
if (tx->key) {
bool skip_hw = false;
@@ -584,7 +625,7 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
tx->key = NULL;
else
skip_hw = (tx->key->conf.flags &
- IEEE80211_KEY_FLAG_SW_MGMT) &&
+ IEEE80211_KEY_FLAG_SW_MGMT_TX) &&
ieee80211_is_mgmt(hdr->frame_control);
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
@@ -593,7 +634,8 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
break;
}
- if (unlikely(tx->key && tx->key->flags & KEY_FLAG_TAINTED))
+ if (unlikely(tx->key && tx->key->flags & KEY_FLAG_TAINTED &&
+ !ieee80211_is_deauth(hdr->frame_control)))
return TX_DROP;
if (!skip_hw && tx->key &&
@@ -610,40 +652,46 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
struct ieee80211_hdr *hdr = (void *)tx->skb->data;
struct ieee80211_supported_band *sband;
- struct ieee80211_rate *rate;
- int i;
u32 len;
- bool inval = false, rts = false, short_preamble = false;
struct ieee80211_tx_rate_control txrc;
+ struct ieee80211_sta_rates *ratetbl = NULL;
bool assoc = false;
memset(&txrc, 0, sizeof(txrc));
- sband = tx->local->hw.wiphy->bands[tx->channel->band];
+ sband = tx->local->hw.wiphy->bands[info->band];
len = min_t(u32, tx->skb->len + FCS_LEN,
tx->local->hw.wiphy->frag_threshold);
/* set up the tx rate control struct we give the RC algo */
- txrc.hw = local_to_hw(tx->local);
+ txrc.hw = &tx->local->hw;
txrc.sband = sband;
txrc.bss_conf = &tx->sdata->vif.bss_conf;
txrc.skb = tx->skb;
txrc.reported_rate.idx = -1;
- txrc.rate_idx_mask = tx->sdata->rc_rateidx_mask[tx->channel->band];
+ txrc.rate_idx_mask = tx->sdata->rc_rateidx_mask[info->band];
if (txrc.rate_idx_mask == (1 << sband->n_bitrates) - 1)
txrc.max_rate_idx = -1;
else
txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
+
+ if (tx->sdata->rc_has_mcs_mask[info->band])
+ txrc.rate_idx_mcs_mask =
+ tx->sdata->rc_rateidx_mcs_mask[info->band];
+
txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
tx->sdata->vif.type == NL80211_IFTYPE_ADHOC);
/* set up RTS protection if desired */
if (len > tx->local->hw.wiphy->rts_threshold) {
- txrc.rts = rts = true;
+ txrc.rts = true;
}
+ info->control.use_rts = txrc.rts;
+ info->control.use_cts_prot = tx->sdata->vif.bss_conf.use_cts_prot;
+
/*
* Use short preamble if the BSS can handle it, but not for
* management frames unless we know the receiver can handle
@@ -653,7 +701,9 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
if (tx->sdata->vif.bss_conf.use_short_preamble &&
(ieee80211_is_data(hdr->frame_control) ||
(tx->sta && test_sta_flag(tx->sta, WLAN_STA_SHORT_PREAMBLE))))
- txrc.short_preamble = short_preamble = true;
+ txrc.short_preamble = true;
+
+ info->control.short_preamble = txrc.short_preamble;
if (tx->sta)
assoc = test_sta_flag(tx->sta, WLAN_STA_ASSOC);
@@ -668,7 +718,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
"scanning and associated. Target station: "
"%pM on %d GHz band\n",
tx->sdata->name, hdr->addr1,
- tx->channel->band ? 5 : 2))
+ info->band ? 5 : 2))
return TX_DROP;
/*
@@ -677,16 +727,38 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
*/
rate_control_get_rate(tx->sdata, tx->sta, &txrc);
- if (unlikely(info->control.rates[0].idx < 0))
- return TX_DROP;
+ if (tx->sta && !info->control.skip_table)
+ ratetbl = rcu_dereference(tx->sta->sta.rates);
+
+ if (unlikely(info->control.rates[0].idx < 0)) {
+ if (ratetbl) {
+ struct ieee80211_tx_rate rate = {
+ .idx = ratetbl->rate[0].idx,
+ .flags = ratetbl->rate[0].flags,
+ .count = ratetbl->rate[0].count
+ };
+
+ if (ratetbl->rate[0].idx < 0)
+ return TX_DROP;
+
+ tx->rate = rate;
+ } else {
+ return TX_DROP;
+ }
+ } else {
+ tx->rate = info->control.rates[0];
+ }
if (txrc.reported_rate.idx < 0) {
- txrc.reported_rate = info->control.rates[0];
+ txrc.reported_rate = tx->rate;
if (tx->sta && ieee80211_is_data(hdr->frame_control))
tx->sta->last_tx_rate = txrc.reported_rate;
} else if (tx->sta)
tx->sta->last_tx_rate = txrc.reported_rate;
+ if (ratetbl)
+ return TX_CONTINUE;
+
if (unlikely(!info->control.rates[0].count))
info->control.rates[0].count = 1;
@@ -694,91 +766,6 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
(info->flags & IEEE80211_TX_CTL_NO_ACK)))
info->control.rates[0].count = 1;
- if (is_multicast_ether_addr(hdr->addr1)) {
- /*
- * XXX: verify the rate is in the basic rateset
- */
- return TX_CONTINUE;
- }
-
- /*
- * set up the RTS/CTS rate as the fastest basic rate
- * that is not faster than the data rate
- *
- * XXX: Should this check all retry rates?
- */
- if (!(info->control.rates[0].flags & IEEE80211_TX_RC_MCS)) {
- s8 baserate = 0;
-
- rate = &sband->bitrates[info->control.rates[0].idx];
-
- for (i = 0; i < sband->n_bitrates; i++) {
- /* must be a basic rate */
- if (!(tx->sdata->vif.bss_conf.basic_rates & BIT(i)))
- continue;
- /* must not be faster than the data rate */
- if (sband->bitrates[i].bitrate > rate->bitrate)
- continue;
- /* maximum */
- if (sband->bitrates[baserate].bitrate <
- sband->bitrates[i].bitrate)
- baserate = i;
- }
-
- info->control.rts_cts_rate_idx = baserate;
- }
-
- for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
- /*
- * make sure there's no valid rate following
- * an invalid one, just in case drivers don't
- * take the API seriously to stop at -1.
- */
- if (inval) {
- info->control.rates[i].idx = -1;
- continue;
- }
- if (info->control.rates[i].idx < 0) {
- inval = true;
- continue;
- }
-
- /*
- * For now assume MCS is already set up correctly, this
- * needs to be fixed.
- */
- if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) {
- WARN_ON(info->control.rates[i].idx > 76);
- continue;
- }
-
- /* set up RTS protection if desired */
- if (rts)
- info->control.rates[i].flags |=
- IEEE80211_TX_RC_USE_RTS_CTS;
-
- /* RC is busted */
- if (WARN_ON_ONCE(info->control.rates[i].idx >=
- sband->n_bitrates)) {
- info->control.rates[i].idx = -1;
- continue;
- }
-
- rate = &sband->bitrates[info->control.rates[i].idx];
-
- /* set up short preamble */
- if (short_preamble &&
- rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
- info->control.rates[i].flags |=
- IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
-
- /* set up G protection */
- if (!rts && tx->sdata->vif.bss_conf.use_cts_prot &&
- rate->flags & IEEE80211_RATE_ERP_G)
- info->control.rates[i].flags |=
- IEEE80211_TX_RC_USE_CTS_PROTECT;
- }
-
return TX_CONTINUE;
}
@@ -811,9 +798,11 @@ ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx)
/*
* Anything but QoS data that has a sequence number field
* (is long enough) gets a sequence number from the global
- * counter.
+ * counter. QoS data frames with a multicast destination
+ * also use the global counter (802.11-2012 9.3.2.10).
*/
- if (!ieee80211_is_data_qos(hdr->frame_control)) {
+ if (!ieee80211_is_data_qos(hdr->frame_control) ||
+ is_multicast_ether_addr(hdr->addr1)) {
/* driver should assign sequence number */
info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
/* for pure STA mode without beacons, we can do it */
@@ -868,15 +857,16 @@ static int ieee80211_fragment(struct ieee80211_tx_data *tx,
rem -= fraglen;
tmp = dev_alloc_skb(local->tx_headroom +
frag_threshold +
- IEEE80211_ENCRYPT_HEADROOM +
+ tx->sdata->encrypt_headroom +
IEEE80211_ENCRYPT_TAILROOM);
if (!tmp)
return -ENOMEM;
__skb_queue_tail(&tx->skbs, tmp);
- skb_reserve(tmp, local->tx_headroom +
- IEEE80211_ENCRYPT_HEADROOM);
+ skb_reserve(tmp,
+ local->tx_headroom + tx->sdata->encrypt_headroom);
+
/* copy control information */
memcpy(tmp->cb, skb->cb, sizeof(tmp->cb));
@@ -899,7 +889,7 @@ static int ieee80211_fragment(struct ieee80211_tx_data *tx,
}
/* adjust first fragment's length */
- skb->len = hdrlen + per_fragm;
+ skb_trim(skb, hdrlen + per_fragm);
return 0;
}
@@ -952,7 +942,6 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
fragnum = 0;
skb_queue_walk(&tx->skbs, skb) {
- int next_len;
const __le16 morefrags = cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
hdr = (void *)skb->data;
@@ -967,12 +956,10 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
info->control.rates[1].idx = -1;
info->control.rates[2].idx = -1;
info->control.rates[3].idx = -1;
- info->control.rates[4].idx = -1;
- BUILD_BUG_ON(IEEE80211_TX_MAX_RATES != 5);
+ BUILD_BUG_ON(IEEE80211_TX_MAX_RATES != 4);
info->flags &= ~IEEE80211_TX_CTL_RATE_CTRL_PROBE;
} else {
hdr->frame_control &= ~morefrags;
- next_len = 0;
}
hdr->seq_ctrl |= cpu_to_le16(fragnum & IEEE80211_SCTL_FRAG);
fragnum++;
@@ -985,15 +972,18 @@ static ieee80211_tx_result debug_noinline
ieee80211_tx_h_stats(struct ieee80211_tx_data *tx)
{
struct sk_buff *skb;
+ int ac = -1;
if (!tx->sta)
return TX_CONTINUE;
- tx->sta->tx_packets++;
skb_queue_walk(&tx->skbs, skb) {
+ ac = skb_get_queue_mapping(skb);
tx->sta->tx_fragments++;
- tx->sta->tx_bytes += skb->len;
+ tx->sta->tx_bytes[ac] += skb->len;
}
+ if (ac >= 0)
+ tx->sta->tx_packets[ac]++;
return TX_CONTINUE;
}
@@ -1057,6 +1047,7 @@ static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx,
{
bool queued = false;
bool reset_agg_timer = false;
+ struct sk_buff *purge_skb = NULL;
if (test_bit(HT_AGG_STATE_OPERATIONAL, &tid_tx->state)) {
info->flags |= IEEE80211_TX_CTL_AMPDU;
@@ -1097,15 +1088,20 @@ static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx,
queued = true;
info->control.vif = &tx->sdata->vif;
info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+ info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
__skb_queue_tail(&tid_tx->pending, skb);
+ if (skb_queue_len(&tid_tx->pending) > STA_MAX_TX_BUFFER)
+ purge_skb = __skb_dequeue(&tid_tx->pending);
}
spin_unlock(&tx->sta->lock);
+
+ if (purge_skb)
+ ieee80211_free_txskb(&tx->local->hw, purge_skb);
}
/* reset session timer */
if (reset_agg_timer && tid_tx->timeout)
- mod_timer(&tid_tx->session_timer,
- TU_TO_EXP_TIME(tid_tx->timeout));
+ tid_tx->last_tx = jiffies;
return queued;
}
@@ -1128,7 +1124,6 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
tx->skb = skb;
tx->local = local;
tx->sdata = sdata;
- tx->channel = local->hw.conf.channel;
__skb_queue_head_init(&tx->skbs);
/*
@@ -1144,7 +1139,9 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
tx->sta = rcu_dereference(sdata->u.vlan.sta);
if (!tx->sta && sdata->dev->ieee80211_ptr->use_4addr)
return TX_DROP;
- } else if (info->flags & IEEE80211_TX_CTL_INJECTED) {
+ } else if (info->flags & (IEEE80211_TX_CTL_INJECTED |
+ IEEE80211_TX_INTFL_NL80211_FRAME_TX) ||
+ tx->sdata->control_port_protocol == tx->skb->protocol) {
tx->sta = sta_info_get_bss(sdata, hdr->addr1);
}
if (!tx->sta)
@@ -1200,39 +1197,68 @@ static bool ieee80211_tx_frags(struct ieee80211_local *local,
struct sk_buff_head *skbs,
bool txpending)
{
+ struct ieee80211_tx_control control;
struct sk_buff *skb, *tmp;
- struct ieee80211_tx_info *info;
unsigned long flags;
skb_queue_walk_safe(skbs, skb, tmp) {
- int q = skb_get_queue_mapping(skb);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ int q = info->hw_queue;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (WARN_ON_ONCE(q >= local->hw.queues)) {
+ __skb_unlink(skb, skbs);
+ ieee80211_free_txskb(&local->hw, skb);
+ continue;
+ }
+#endif
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
if (local->queue_stop_reasons[q] ||
(!txpending && !skb_queue_empty(&local->pending[q]))) {
- /*
- * Since queue is stopped, queue up frames for later
- * transmission from the tx-pending tasklet when the
- * queue is woken again.
- */
- if (txpending)
- skb_queue_splice_init(skbs, &local->pending[q]);
- else
- skb_queue_splice_tail_init(skbs,
- &local->pending[q]);
+ if (unlikely(info->flags &
+ IEEE80211_TX_INTFL_OFFCHAN_TX_OK)) {
+ if (local->queue_stop_reasons[q] &
+ ~BIT(IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL)) {
+ /*
+ * Drop off-channel frames if queues
+ * are stopped for any reason other
+ * than off-channel operation. Never
+ * queue them.
+ */
+ spin_unlock_irqrestore(
+ &local->queue_stop_reason_lock,
+ flags);
+ ieee80211_purge_tx_queue(&local->hw,
+ skbs);
+ return true;
+ }
+ } else {
- spin_unlock_irqrestore(&local->queue_stop_reason_lock,
- flags);
- return false;
+ /*
+ * Since queue is stopped, queue up frames for
+ * later transmission from the tx-pending
+ * tasklet when the queue is woken again.
+ */
+ if (txpending)
+ skb_queue_splice_init(skbs,
+ &local->pending[q]);
+ else
+ skb_queue_splice_tail_init(skbs,
+ &local->pending[q]);
+
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock,
+ flags);
+ return false;
+ }
}
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
- info = IEEE80211_SKB_CB(skb);
info->control.vif = vif;
- info->control.sta = sta;
+ control.sta = sta;
__skb_unlink(skb, skbs);
- drv_tx(local, skb);
+ drv_tx(local, &control, skb);
}
return true;
@@ -1270,8 +1296,20 @@ static bool __ieee80211_tx(struct ieee80211_local *local,
switch (sdata->vif.type) {
case NL80211_IFTYPE_MONITOR:
- sdata = NULL;
- vif = NULL;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE) {
+ vif = &sdata->vif;
+ break;
+ }
+ sdata = rcu_dereference(local->monitor_sdata);
+ if (sdata) {
+ vif = &sdata->vif;
+ info->hw_queue =
+ vif->hw_queue[skb_get_queue_mapping(skb)];
+ } else if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) {
+ dev_kfree_skb(skb);
+ return true;
+ } else
+ vif = NULL;
break;
case NL80211_IFTYPE_AP_VLAN:
sdata = container_of(sdata->bss,
@@ -1282,14 +1320,10 @@ static bool __ieee80211_tx(struct ieee80211_local *local,
break;
}
- if (local->ops->tx_frags)
- drv_tx_frags(local, vif, pubsta, skbs);
- else
- result = ieee80211_tx_frags(local, vif, pubsta, skbs,
- txpending);
+ result = ieee80211_tx_frags(local, vif, pubsta, skbs,
+ txpending);
ieee80211_tpt_led_trig_tx(local, fc, led_len);
- ieee80211_led_tx(local, 1);
WARN_ON_ONCE(!skb_queue_empty(skbs));
@@ -1340,9 +1374,9 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
if (unlikely(res == TX_DROP)) {
I802_DEBUG_INC(tx->local->tx_handlers_drop);
if (tx->skb)
- dev_kfree_skb(tx->skb);
+ ieee80211_free_txskb(&tx->local->hw, tx->skb);
else
- __skb_queue_purge(&tx->skbs);
+ ieee80211_purge_tx_queue(&tx->local->hw, &tx->skbs);
return -1;
} else if (unlikely(res == TX_QUEUED)) {
I802_DEBUG_INC(tx->local->tx_handlers_queued);
@@ -1352,11 +1386,41 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
return 0;
}
+bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, struct sk_buff *skb,
+ int band, struct ieee80211_sta **sta)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_tx_data tx;
+
+ if (ieee80211_tx_prepare(sdata, &tx, skb) == TX_DROP)
+ return false;
+
+ info->band = band;
+ info->control.vif = vif;
+ info->hw_queue = vif->hw_queue[skb_get_queue_mapping(skb)];
+
+ if (invoke_tx_handlers(&tx))
+ return false;
+
+ if (sta) {
+ if (tx.sta)
+ *sta = &tx.sta->sta;
+ else
+ *sta = NULL;
+ }
+
+ return true;
+}
+EXPORT_SYMBOL(ieee80211_tx_prepare_skb);
+
/*
* Returns false if the frame couldn't be transmitted but was queued instead.
*/
static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata,
- struct sk_buff *skb, bool txpending)
+ struct sk_buff *skb, bool txpending,
+ enum ieee80211_band band)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_data tx;
@@ -1370,27 +1434,29 @@ static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata,
return true;
}
- rcu_read_lock();
-
/* initialises tx */
led_len = skb->len;
res_prepare = ieee80211_tx_prepare(sdata, &tx, skb);
if (unlikely(res_prepare == TX_DROP)) {
- dev_kfree_skb(skb);
- goto out;
+ ieee80211_free_txskb(&local->hw, skb);
+ return true;
} else if (unlikely(res_prepare == TX_QUEUED)) {
- goto out;
+ return true;
}
- tx.channel = local->hw.conf.channel;
- info->band = tx.channel->band;
+ info->band = band;
+
+ /* set up hw_queue value early */
+ if (!(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) ||
+ !(local->hw.flags & IEEE80211_HW_QUEUE_CONTROL))
+ info->hw_queue =
+ sdata->vif.hw_queue[skb_get_queue_mapping(skb)];
if (!invoke_tx_handlers(&tx))
result = __ieee80211_tx(local, &tx.skbs, led_len,
tx.sta, txpending);
- out:
- rcu_read_unlock();
+
return result;
}
@@ -1425,7 +1491,8 @@ static int ieee80211_skb_resize(struct ieee80211_sub_if_data *sdata,
return 0;
}
-void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
+void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
+ enum ieee80211_band band)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -1433,37 +1500,34 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
int headroom;
bool may_encrypt;
- rcu_read_lock();
-
may_encrypt = !(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT);
headroom = local->tx_headroom;
if (may_encrypt)
- headroom += IEEE80211_ENCRYPT_HEADROOM;
+ headroom += sdata->encrypt_headroom;
headroom -= skb_headroom(skb);
headroom = max_t(int, 0, headroom);
if (ieee80211_skb_resize(sdata, skb, headroom, may_encrypt)) {
- dev_kfree_skb(skb);
- rcu_read_unlock();
+ ieee80211_free_txskb(&local->hw, skb);
return;
}
hdr = (struct ieee80211_hdr *) skb->data;
info->control.vif = &sdata->vif;
- if (ieee80211_vif_is_mesh(&sdata->vif) &&
- ieee80211_is_data(hdr->frame_control) &&
- !is_multicast_ether_addr(hdr->addr1))
- if (mesh_nexthop_resolve(skb, sdata)) {
- /* skb queued: don't free */
- rcu_read_unlock();
- return;
- }
+ if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ if (ieee80211_is_data(hdr->frame_control) &&
+ is_unicast_ether_addr(hdr->addr1)) {
+ if (mesh_nexthop_resolve(sdata, skb))
+ return; /* skb queued: don't free */
+ } else {
+ ieee80211_mps_set_frame_flags(sdata, NULL, hdr);
+ }
+ }
ieee80211_set_qos_hdr(sdata, skb);
- ieee80211_tx(sdata, skb, false);
- rcu_read_unlock();
+ ieee80211_tx(sdata, skb, false, band);
}
static bool ieee80211_parse_tx_radiotap(struct sk_buff *skb)
@@ -1553,7 +1617,8 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_channel *chan = local->hw.conf.channel;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_channel *chan;
struct ieee80211_radiotap_header *prthdr =
(struct ieee80211_radiotap_header *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -1562,26 +1627,6 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
u16 len_rthdr;
int hdrlen;
- /*
- * Frame injection is not allowed if beaconing is not allowed
- * or if we need radar detection. Beaconing is usually not allowed when
- * the mode or operation (Adhoc, AP, Mesh) does not support DFS.
- * Passive scan is also used in world regulatory domains where
- * your country is not known and as such it should be treated as
- * NO TX unless the channel is explicitly allowed in which case
- * your current regulatory domain would not have the passive scan
- * flag.
- *
- * Since AP mode uses monitor interfaces to inject/TX management
- * frames we can make AP mode the exception to this rule once it
- * supports radar detection as its implementation can deal with
- * radar detection by itself. We can do that later by adding a
- * monitor flag interfaces used for AP support.
- */
- if ((chan->flags & (IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_RADAR |
- IEEE80211_CHAN_PASSIVE_SCAN)))
- goto fail;
-
/* check for not even having the fixed radiotap header part */
if (unlikely(skb->len < sizeof(struct ieee80211_radiotap_header)))
goto fail; /* too short to be possibly valid */
@@ -1628,7 +1673,7 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
skb->len >= len_rthdr + hdrlen + sizeof(rfc1042_header) + 2) {
u8 *payload = (u8 *)hdr + hdrlen;
- if (compare_ether_addr(payload, rfc1042_header) == 0)
+ if (ether_addr_equal(payload, rfc1042_header))
skb->protocol = cpu_to_be16((payload[6] << 8) |
payload[7]);
}
@@ -1661,22 +1706,78 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
tmp_sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
tmp_sdata->vif.type == NL80211_IFTYPE_WDS)
continue;
- if (compare_ether_addr(tmp_sdata->vif.addr, hdr->addr2) == 0) {
+ if (ether_addr_equal(tmp_sdata->vif.addr, hdr->addr2)) {
sdata = tmp_sdata;
break;
}
}
- ieee80211_xmit(sdata, skb);
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf) {
+ tmp_sdata = rcu_dereference(local->monitor_sdata);
+ if (tmp_sdata)
+ chanctx_conf =
+ rcu_dereference(tmp_sdata->vif.chanctx_conf);
+ }
+
+ if (chanctx_conf)
+ chan = chanctx_conf->def.chan;
+ else if (!local->use_chanctx)
+ chan = local->_oper_chandef.chan;
+ else
+ goto fail_rcu;
+
+ /*
+ * Frame injection is not allowed if beaconing is not allowed
+ * or if we need radar detection. Beaconing is usually not allowed when
+ * the mode or operation (Adhoc, AP, Mesh) does not support DFS.
+ * Passive scan is also used in world regulatory domains where
+ * your country is not known and as such it should be treated as
+ * NO TX unless the channel is explicitly allowed in which case
+ * your current regulatory domain would not have the passive scan
+ * flag.
+ *
+ * Since AP mode uses monitor interfaces to inject/TX management
+ * frames we can make AP mode the exception to this rule once it
+ * supports radar detection as its implementation can deal with
+ * radar detection by itself. We can do that later by adding a
+ * monitor flag interfaces used for AP support.
+ */
+ if ((chan->flags & (IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_RADAR)))
+ goto fail_rcu;
+
+ ieee80211_xmit(sdata, skb, chan->band);
rcu_read_unlock();
return NETDEV_TX_OK;
+fail_rcu:
+ rcu_read_unlock();
fail:
dev_kfree_skb(skb);
return NETDEV_TX_OK; /* meaning, we dealt with the skb */
}
+/*
+ * Measure Tx frame arrival time for Tx latency statistics calculation
+ * A single Tx frame latency should be measured from when it is entering the
+ * Kernel until we receive Tx complete confirmation indication and the skb is
+ * freed.
+ */
+static void ieee80211_tx_latency_start_msrmnt(struct ieee80211_local *local,
+ struct sk_buff *skb)
+{
+ struct timespec skb_arv;
+ struct ieee80211_tx_latency_bin_ranges *tx_latency;
+
+ tx_latency = rcu_dereference(local->tx_latency);
+ if (!tx_latency)
+ return;
+
+ ktime_get_ts(&skb_arv);
+ skb->tstamp = ktime_set(skb_arv.tv_sec, skb_arv.tv_nsec);
+}
+
/**
* ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type
* subinterfaces (wlan#, WDS, and VLAN interfaces)
@@ -1698,12 +1799,12 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_info *info;
- int ret = NETDEV_TX_BUSY, head_need;
+ int head_need;
u16 ethertype, hdrlen, meshhdrlen = 0;
__le16 fc;
struct ieee80211_hdr hdr;
struct ieee80211s_hdr mesh_hdr __maybe_unused;
- struct mesh_path __maybe_unused *mppath = NULL;
+ struct mesh_path __maybe_unused *mppath = NULL, *mpath = NULL;
const u8 *encaps_data;
int encaps_len, skip_header_bytes;
int nh_pos, h_pos;
@@ -1713,20 +1814,25 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
bool multicast;
u32 info_flags = 0;
u16 info_id = 0;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_sub_if_data *ap_sdata;
+ enum ieee80211_band band;
- if (unlikely(skb->len < ETH_HLEN)) {
- ret = NETDEV_TX_OK;
+ if (unlikely(skb->len < ETH_HLEN))
goto fail;
- }
/* convert Ethernet header to proper 802.11 header (based on
* operation mode) */
ethertype = (skb->data[12] << 8) | skb->data[13];
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
+ rcu_read_lock();
+
+ /* Measure frame arrival for Tx latency statistics calculation */
+ ieee80211_tx_latency_start_msrmnt(local, skb);
+
switch (sdata->vif.type) {
case NL80211_IFTYPE_AP_VLAN:
- rcu_read_lock();
sta = rcu_dereference(sdata->u.vlan.sta);
if (sta) {
fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
@@ -1739,17 +1845,27 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
wme_sta = test_sta_flag(sta, WLAN_STA_WME);
}
- rcu_read_unlock();
+ ap_sdata = container_of(sdata->bss, struct ieee80211_sub_if_data,
+ u.ap);
+ chanctx_conf = rcu_dereference(ap_sdata->vif.chanctx_conf);
+ if (!chanctx_conf)
+ goto fail_rcu;
+ band = chanctx_conf->def.chan->band;
if (sta)
break;
/* fall through */
case NL80211_IFTYPE_AP:
+ if (sdata->vif.type == NL80211_IFTYPE_AP)
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf)
+ goto fail_rcu;
fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
/* DA BSSID SA */
memcpy(hdr.addr1, skb->data, ETH_ALEN);
memcpy(hdr.addr2, sdata->vif.addr, ETH_ALEN);
memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN);
hdrlen = 24;
+ band = chanctx_conf->def.chan->band;
break;
case NL80211_IFTYPE_WDS:
fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
@@ -1759,18 +1875,34 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
memcpy(hdr.addr3, skb->data, ETH_ALEN);
memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
hdrlen = 30;
+ /*
+ * This is the exception! WDS style interfaces are prohibited
+ * when channel contexts are in used so this must be valid
+ */
+ band = local->hw.conf.chandef.chan->band;
break;
#ifdef CONFIG_MAC80211_MESH
case NL80211_IFTYPE_MESH_POINT:
- if (!sdata->u.mesh.mshcfg.dot11MeshTTL) {
- /* Do not send frames with mesh_ttl == 0 */
- sdata->u.mesh.mshstats.dropped_frames_ttl++;
- ret = NETDEV_TX_OK;
- goto fail;
+ if (!is_multicast_ether_addr(skb->data)) {
+ struct sta_info *next_hop;
+ bool mpp_lookup = true;
+
+ mpath = mesh_path_lookup(sdata, skb->data);
+ if (mpath) {
+ mpp_lookup = false;
+ next_hop = rcu_dereference(mpath->next_hop);
+ if (!next_hop ||
+ !(mpath->flags & (MESH_PATH_ACTIVE |
+ MESH_PATH_RESOLVING)))
+ mpp_lookup = true;
+ }
+
+ if (mpp_lookup)
+ mppath = mpp_path_lookup(sdata, skb->data);
+
+ if (mppath && mpath)
+ mesh_path_del(mpath->sdata, mpath->dst);
}
- rcu_read_lock();
- if (!is_multicast_ether_addr(skb->data))
- mppath = mpp_path_lookup(skb->data, sdata);
/*
* Use address extension if it is a packet from
@@ -1778,57 +1910,50 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
* is being proxied by a portal (i.e. portal address
* differs from proxied address)
*/
- if (compare_ether_addr(sdata->vif.addr,
- skb->data + ETH_ALEN) == 0 &&
- !(mppath && compare_ether_addr(mppath->mpp, skb->data))) {
+ if (ether_addr_equal(sdata->vif.addr, skb->data + ETH_ALEN) &&
+ !(mppath && !ether_addr_equal(mppath->mpp, skb->data))) {
hdrlen = ieee80211_fill_mesh_addresses(&hdr, &fc,
skb->data, skb->data + ETH_ALEN);
- rcu_read_unlock();
- meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr,
- sdata, NULL, NULL);
+ meshhdrlen = ieee80211_new_mesh_header(sdata, &mesh_hdr,
+ NULL, NULL);
} else {
- int is_mesh_mcast = 1;
- const u8 *mesh_da;
+ /* DS -> MBSS (802.11-2012 13.11.3.3).
+ * For unicast with unknown forwarding information,
+ * destination might be in the MBSS or if that fails
+ * forwarded to another mesh gate. In either case
+ * resolution will be handled in ieee80211_xmit(), so
+ * leave the original DA. This also works for mcast */
+ const u8 *mesh_da = skb->data;
+
+ if (mppath)
+ mesh_da = mppath->mpp;
+ else if (mpath)
+ mesh_da = mpath->dst;
- if (is_multicast_ether_addr(skb->data))
- /* DA TA mSA AE:SA */
- mesh_da = skb->data;
- else {
- static const u8 bcast[ETH_ALEN] =
- { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
- if (mppath) {
- /* RA TA mDA mSA AE:DA SA */
- mesh_da = mppath->mpp;
- is_mesh_mcast = 0;
- } else {
- /* DA TA mSA AE:SA */
- mesh_da = bcast;
- }
- }
hdrlen = ieee80211_fill_mesh_addresses(&hdr, &fc,
mesh_da, sdata->vif.addr);
- rcu_read_unlock();
- if (is_mesh_mcast)
- meshhdrlen =
- ieee80211_new_mesh_header(&mesh_hdr,
- sdata,
- skb->data + ETH_ALEN,
- NULL);
+ if (is_multicast_ether_addr(mesh_da))
+ /* DA TA mSA AE:SA */
+ meshhdrlen = ieee80211_new_mesh_header(
+ sdata, &mesh_hdr,
+ skb->data + ETH_ALEN, NULL);
else
- meshhdrlen =
- ieee80211_new_mesh_header(&mesh_hdr,
- sdata,
- skb->data,
- skb->data + ETH_ALEN);
+ /* RA TA mDA mSA AE:DA SA */
+ meshhdrlen = ieee80211_new_mesh_header(
+ sdata, &mesh_hdr, skb->data,
+ skb->data + ETH_ALEN);
}
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf)
+ goto fail_rcu;
+ band = chanctx_conf->def.chan->band;
break;
#endif
case NL80211_IFTYPE_STATION:
if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) {
bool tdls_peer = false;
- rcu_read_lock();
sta = sta_info_get(sdata, skb->data);
if (sta) {
authorized = test_sta_flag(sta,
@@ -1839,7 +1964,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
tdls_auth = test_sta_flag(sta,
WLAN_STA_TDLS_PEER_AUTH);
}
- rcu_read_unlock();
/*
* If the TDLS link is enabled, send everything
@@ -1853,10 +1977,8 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
if (tdls_direct) {
/* link during setup - throw out frames to peer */
- if (!tdls_auth) {
- ret = NETDEV_TX_OK;
- goto fail;
- }
+ if (!tdls_auth)
+ goto fail_rcu;
/* DA SA BSSID */
memcpy(hdr.addr1, skb->data, ETH_ALEN);
@@ -1881,6 +2003,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
memcpy(hdr.addr3, skb->data, ETH_ALEN);
hdrlen = 24;
}
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf)
+ goto fail_rcu;
+ band = chanctx_conf->def.chan->band;
break;
case NL80211_IFTYPE_ADHOC:
/* DA SA BSSID */
@@ -1888,10 +2014,13 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
memcpy(hdr.addr3, sdata->u.ibss.bssid, ETH_ALEN);
hdrlen = 24;
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf)
+ goto fail_rcu;
+ band = chanctx_conf->def.chan->band;
break;
default:
- ret = NETDEV_TX_OK;
- goto fail;
+ goto fail_rcu;
}
/*
@@ -1901,13 +2030,11 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
*/
multicast = is_multicast_ether_addr(hdr.addr1);
if (!multicast) {
- rcu_read_lock();
sta = sta_info_get(sdata, hdr.addr1);
if (sta) {
authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
wme_sta = test_sta_flag(sta, WLAN_STA_WME);
}
- rcu_read_unlock();
}
/* For mesh, the use of the QoS header is mandatory */
@@ -1915,7 +2042,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
wme_sta = true;
/* receiver and we are QoS enabled, use a QoS type frame */
- if (wme_sta && local->hw.queues >= 4) {
+ if (wme_sta && local->hw.queues >= IEEE80211_NUM_ACS) {
fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
hdrlen += 2;
}
@@ -1925,20 +2052,17 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
* EAPOL frames from the local station.
*/
if (unlikely(!ieee80211_vif_is_mesh(&sdata->vif) &&
- !is_multicast_ether_addr(hdr.addr1) && !authorized &&
+ !multicast && !authorized &&
(cpu_to_be16(ethertype) != sdata->control_port_protocol ||
- compare_ether_addr(sdata->vif.addr, skb->data + ETH_ALEN)))) {
+ !ether_addr_equal(sdata->vif.addr, skb->data + ETH_ALEN)))) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: dropped frame to %pM"
- " (unauthorized port)\n", dev->name,
- hdr.addr1);
+ net_info_ratelimited("%s: dropped frame to %pM (unauthorized port)\n",
+ dev->name, hdr.addr1);
#endif
I802_DEBUG_INC(local->tx_handlers_drop_unauth_port);
- ret = NETDEV_TX_OK;
- goto fail;
+ goto fail_rcu;
}
if (unlikely(!multicast && skb->sk &&
@@ -1948,24 +2072,14 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
skb = skb_clone(skb, GFP_ATOMIC);
if (skb) {
unsigned long flags;
- int id, r;
+ int id;
spin_lock_irqsave(&local->ack_status_lock, flags);
- r = idr_get_new_above(&local->ack_status_frames,
- orig_skb, 1, &id);
- if (r == -EAGAIN) {
- idr_pre_get(&local->ack_status_frames,
- GFP_ATOMIC);
- r = idr_get_new_above(&local->ack_status_frames,
- orig_skb, 1, &id);
- }
- if (WARN_ON(!id) || id > 0xffff) {
- idr_remove(&local->ack_status_frames, id);
- r = -ERANGE;
- }
+ id = idr_alloc(&local->ack_status_frames, orig_skb,
+ 1, 0x10000, GFP_ATOMIC);
spin_unlock_irqrestore(&local->ack_status_lock, flags);
- if (!r) {
+ if (id >= 0) {
info_id = id;
info_flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
} else if (skb_shared(skb)) {
@@ -1992,10 +2106,8 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
skb = skb_clone(skb, GFP_ATOMIC);
kfree_skb(tmp_skb);
- if (!skb) {
- ret = NETDEV_TX_OK;
- goto fail;
- }
+ if (!skb)
+ goto fail_rcu;
}
hdr.frame_control = fc;
@@ -2007,7 +2119,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
encaps_data = bridge_tunnel_header;
encaps_len = sizeof(bridge_tunnel_header);
skip_header_bytes -= 2;
- } else if (ethertype >= 0x600) {
+ } else if (ethertype >= ETH_P_802_3_MIN) {
encaps_data = rfc1042_header;
encaps_len = sizeof(rfc1042_header);
skip_header_bytes -= 2;
@@ -2038,11 +2150,14 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
*/
if (head_need > 0 || skb_cloned(skb)) {
- head_need += IEEE80211_ENCRYPT_HEADROOM;
+ head_need += sdata->encrypt_headroom;
head_need += local->tx_headroom;
head_need = max_t(int, 0, head_need);
- if (ieee80211_skb_resize(sdata, skb, head_need, true))
- goto fail;
+ if (ieee80211_skb_resize(sdata, skb, head_need, true)) {
+ ieee80211_free_txskb(&local->hw, skb);
+ skb = NULL;
+ goto fail_rcu;
+ }
}
if (encaps_data) {
@@ -2062,7 +2177,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
if (ieee80211_is_data_qos(fc)) {
__le16 *qos_control;
- qos_control = (__le16*) skb_push(skb, 2);
+ qos_control = (__le16 *) skb_push(skb, 2);
memcpy(skb_push(skb, hdrlen - 2), &hdr, hdrlen - 2);
/*
* Maybe we could actually set some fields here, for now just
@@ -2093,15 +2208,16 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
info->flags = info_flags;
info->ack_frame_id = info_id;
- ieee80211_xmit(sdata, skb);
+ ieee80211_xmit(sdata, skb, band);
+ rcu_read_unlock();
return NETDEV_TX_OK;
+ fail_rcu:
+ rcu_read_unlock();
fail:
- if (ret == NETDEV_TX_OK)
- dev_kfree_skb(skb);
-
- return ret;
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
}
@@ -2111,10 +2227,13 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
*/
void ieee80211_clear_tx_pending(struct ieee80211_local *local)
{
+ struct sk_buff *skb;
int i;
- for (i = 0; i < local->hw.queues; i++)
- skb_queue_purge(&local->pending[i]);
+ for (i = 0; i < local->hw.queues; i++) {
+ while ((skb = skb_dequeue(&local->pending[i])) != NULL)
+ ieee80211_free_txskb(&local->hw, skb);
+ }
}
/*
@@ -2130,11 +2249,18 @@ static bool ieee80211_tx_pending_skb(struct ieee80211_local *local,
struct sta_info *sta;
struct ieee80211_hdr *hdr;
bool result;
+ struct ieee80211_chanctx_conf *chanctx_conf;
sdata = vif_to_sdata(info->control.vif);
if (info->flags & IEEE80211_TX_INTFL_NEED_TXPROCESSING) {
- result = ieee80211_tx(sdata, skb, true);
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (unlikely(!chanctx_conf)) {
+ dev_kfree_skb(skb);
+ return true;
+ }
+ result = ieee80211_tx(sdata, skb, true,
+ chanctx_conf->def.chan->band);
} else {
struct sk_buff_head skbs;
@@ -2156,7 +2282,6 @@ static bool ieee80211_tx_pending_skb(struct ieee80211_local *local,
void ieee80211_tx_pending(unsigned long data)
{
struct ieee80211_local *local = (struct ieee80211_local *)data;
- struct ieee80211_sub_if_data *sdata;
unsigned long flags;
int i;
bool txok;
@@ -2178,7 +2303,7 @@ void ieee80211_tx_pending(unsigned long data)
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
if (WARN_ON(!info->control.vif)) {
- kfree_skb(skb);
+ ieee80211_free_txskb(&local->hw, skb);
continue;
}
@@ -2193,8 +2318,7 @@ void ieee80211_tx_pending(unsigned long data)
}
if (skb_queue_empty(&local->pending[i]))
- list_for_each_entry_rcu(sdata, &local->interfaces, list)
- netif_wake_subqueue(sdata->dev, i);
+ ieee80211_propagate_queue_wake(local, i);
}
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
@@ -2203,9 +2327,9 @@ void ieee80211_tx_pending(unsigned long data)
/* functions for drivers to get certain frames */
-static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
- struct sk_buff *skb,
- struct beacon_data *beacon)
+static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
+ struct ps_data *ps, struct sk_buff *skb,
+ bool is_template)
{
u8 *pos, *tim;
int aid0 = 0;
@@ -2213,27 +2337,28 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
/* Generate bitmap for TIM only if there are any STAs in power save
* mode. */
- if (atomic_read(&bss->num_sta_ps) > 0)
+ if (atomic_read(&ps->num_sta_ps) > 0)
/* in the hope that this is faster than
* checking byte-for-byte */
- have_bits = !bitmap_empty((unsigned long*)bss->tim,
+ have_bits = !bitmap_empty((unsigned long *)ps->tim,
IEEE80211_MAX_AID+1);
-
- if (bss->dtim_count == 0)
- bss->dtim_count = beacon->dtim_period - 1;
- else
- bss->dtim_count--;
+ if (!is_template) {
+ if (ps->dtim_count == 0)
+ ps->dtim_count = sdata->vif.bss_conf.dtim_period - 1;
+ else
+ ps->dtim_count--;
+ }
tim = pos = (u8 *) skb_put(skb, 6);
*pos++ = WLAN_EID_TIM;
*pos++ = 4;
- *pos++ = bss->dtim_count;
- *pos++ = beacon->dtim_period;
+ *pos++ = ps->dtim_count;
+ *pos++ = sdata->vif.bss_conf.dtim_period;
- if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf))
+ if (ps->dtim_count == 0 && !skb_queue_empty(&ps->bc_buf))
aid0 = 1;
- bss->dtim_bc_mc = aid0 == 1;
+ ps->dtim_bc_mc = aid0 == 1;
if (have_bits) {
/* Find largest even number N1 so that bits numbered 1 through
@@ -2241,14 +2366,14 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
* (N2 + 1) x 8 through 2007 are 0. */
n1 = 0;
for (i = 0; i < IEEE80211_MAX_TIM_LEN; i++) {
- if (bss->tim[i]) {
+ if (ps->tim[i]) {
n1 = i & 0xfe;
break;
}
}
n2 = n1;
for (i = IEEE80211_MAX_TIM_LEN - 1; i >= n1; i--) {
- if (bss->tim[i]) {
+ if (ps->tim[i]) {
n2 = i;
break;
}
@@ -2258,7 +2383,7 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
*pos++ = n1 | aid0;
/* Part Virt Bitmap */
skb_put(skb, n2 - n1);
- memcpy(pos, bss->tim + n1, n2 - n1 + 1);
+ memcpy(pos, ps->tim + n1, n2 - n1 + 1);
tim[1] = n2 - n1 + 4;
} else {
@@ -2267,45 +2392,201 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
}
}
-struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- u16 *tim_offset, u16 *tim_length)
+static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
+ struct ps_data *ps, struct sk_buff *skb,
+ bool is_template)
+{
+ struct ieee80211_local *local = sdata->local;
+
+ /*
+ * Not very nice, but we want to allow the driver to call
+ * ieee80211_beacon_get() as a response to the set_tim()
+ * callback. That, however, is already invoked under the
+ * sta_lock to guarantee consistent and race-free update
+ * of the tim bitmap in mac80211 and the driver.
+ */
+ if (local->tim_in_locked_section) {
+ __ieee80211_beacon_add_tim(sdata, ps, skb, is_template);
+ } else {
+ spin_lock_bh(&local->tim_lock);
+ __ieee80211_beacon_add_tim(sdata, ps, skb, is_template);
+ spin_unlock_bh(&local->tim_lock);
+ }
+
+ return 0;
+}
+
+static void ieee80211_set_csa(struct ieee80211_sub_if_data *sdata,
+ struct beacon_data *beacon)
+{
+ struct probe_resp *resp;
+ u8 *beacon_data;
+ size_t beacon_data_len;
+ int i;
+ u8 count = sdata->csa_current_counter;
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_AP:
+ beacon_data = beacon->tail;
+ beacon_data_len = beacon->tail_len;
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ beacon_data = beacon->head;
+ beacon_data_len = beacon->head_len;
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ beacon_data = beacon->head;
+ beacon_data_len = beacon->head_len;
+ break;
+ default:
+ return;
+ }
+
+ for (i = 0; i < IEEE80211_MAX_CSA_COUNTERS_NUM; ++i) {
+ u16 counter_offset_beacon =
+ sdata->csa_counter_offset_beacon[i];
+ u16 counter_offset_presp = sdata->csa_counter_offset_presp[i];
+
+ if (counter_offset_beacon) {
+ if (WARN_ON(counter_offset_beacon >= beacon_data_len))
+ return;
+
+ beacon_data[counter_offset_beacon] = count;
+ }
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP &&
+ counter_offset_presp) {
+ rcu_read_lock();
+ resp = rcu_dereference(sdata->u.ap.probe_resp);
+
+ /* If nl80211 accepted the offset, this should
+ * not happen.
+ */
+ if (WARN_ON(!resp)) {
+ rcu_read_unlock();
+ return;
+ }
+ resp->data[counter_offset_presp] = count;
+ rcu_read_unlock();
+ }
+ }
+}
+
+u8 ieee80211_csa_update_counter(struct ieee80211_vif *vif)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+
+ sdata->csa_current_counter--;
+
+ /* the counter should never reach 0 */
+ WARN_ON(!sdata->csa_current_counter);
+
+ return sdata->csa_current_counter;
+}
+EXPORT_SYMBOL(ieee80211_csa_update_counter);
+
+bool ieee80211_csa_is_complete(struct ieee80211_vif *vif)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct beacon_data *beacon = NULL;
+ u8 *beacon_data;
+ size_t beacon_data_len;
+ int counter_beacon = sdata->csa_counter_offset_beacon[0];
+ int ret = false;
+
+ if (!ieee80211_sdata_running(sdata))
+ return false;
+
+ rcu_read_lock();
+ if (vif->type == NL80211_IFTYPE_AP) {
+ struct ieee80211_if_ap *ap = &sdata->u.ap;
+
+ beacon = rcu_dereference(ap->beacon);
+ if (WARN_ON(!beacon || !beacon->tail))
+ goto out;
+ beacon_data = beacon->tail;
+ beacon_data_len = beacon->tail_len;
+ } else if (vif->type == NL80211_IFTYPE_ADHOC) {
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+
+ beacon = rcu_dereference(ifibss->presp);
+ if (!beacon)
+ goto out;
+
+ beacon_data = beacon->head;
+ beacon_data_len = beacon->head_len;
+ } else if (vif->type == NL80211_IFTYPE_MESH_POINT) {
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ beacon = rcu_dereference(ifmsh->beacon);
+ if (!beacon)
+ goto out;
+
+ beacon_data = beacon->head;
+ beacon_data_len = beacon->head_len;
+ } else {
+ WARN_ON(1);
+ goto out;
+ }
+
+ if (WARN_ON(counter_beacon > beacon_data_len))
+ goto out;
+
+ if (beacon_data[counter_beacon] == 1)
+ ret = true;
+ out:
+ rcu_read_unlock();
+
+ return ret;
+}
+EXPORT_SYMBOL(ieee80211_csa_is_complete);
+
+static struct sk_buff *
+__ieee80211_beacon_get(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_mutable_offsets *offs,
+ bool is_template)
{
struct ieee80211_local *local = hw_to_local(hw);
struct sk_buff *skb = NULL;
struct ieee80211_tx_info *info;
struct ieee80211_sub_if_data *sdata = NULL;
- struct ieee80211_if_ap *ap = NULL;
- struct beacon_data *beacon;
- struct ieee80211_supported_band *sband;
- enum ieee80211_band band = local->hw.conf.channel->band;
+ enum ieee80211_band band;
struct ieee80211_tx_rate_control txrc;
-
- sband = local->hw.wiphy->bands[band];
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ int csa_off_base = 0;
rcu_read_lock();
sdata = vif_to_sdata(vif);
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (!ieee80211_sdata_running(sdata))
+ if (!ieee80211_sdata_running(sdata) || !chanctx_conf)
goto out;
- if (tim_offset)
- *tim_offset = 0;
- if (tim_length)
- *tim_length = 0;
+ if (offs)
+ memset(offs, 0, sizeof(*offs));
if (sdata->vif.type == NL80211_IFTYPE_AP) {
- ap = &sdata->u.ap;
- beacon = rcu_dereference(ap->beacon);
+ struct ieee80211_if_ap *ap = &sdata->u.ap;
+ struct beacon_data *beacon = rcu_dereference(ap->beacon);
+
if (beacon) {
+ if (sdata->vif.csa_active) {
+ if (!is_template)
+ ieee80211_csa_update_counter(vif);
+
+ ieee80211_set_csa(sdata, beacon);
+ }
+
/*
* headroom, head length,
* tail length and maximum TIM length
*/
skb = dev_alloc_skb(local->tx_headroom +
beacon->head_len +
- beacon->tail_len + 256);
+ beacon->tail_len + 256 +
+ local->hw.extra_beacon_tailroom);
if (!skb)
goto out;
@@ -2313,27 +2594,16 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
memcpy(skb_put(skb, beacon->head_len), beacon->head,
beacon->head_len);
- /*
- * Not very nice, but we want to allow the driver to call
- * ieee80211_beacon_get() as a response to the set_tim()
- * callback. That, however, is already invoked under the
- * sta_lock to guarantee consistent and race-free update
- * of the tim bitmap in mac80211 and the driver.
- */
- if (local->tim_in_locked_section) {
- ieee80211_beacon_add_tim(ap, skb, beacon);
- } else {
- unsigned long flags;
+ ieee80211_beacon_add_tim(sdata, &ap->ps, skb,
+ is_template);
- spin_lock_irqsave(&local->tim_lock, flags);
- ieee80211_beacon_add_tim(ap, skb, beacon);
- spin_unlock_irqrestore(&local->tim_lock, flags);
- }
+ if (offs) {
+ offs->tim_offset = beacon->head_len;
+ offs->tim_length = skb->len - beacon->head_len;
- if (tim_offset)
- *tim_offset = beacon->head_len;
- if (tim_length)
- *tim_length = skb->len - beacon->head_len;
+ /* for AP the csa offsets are from tail */
+ csa_off_base = skb->len;
+ }
if (beacon->tail)
memcpy(skb_put(skb, beacon->tail_len),
@@ -2343,77 +2613,89 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_hdr *hdr;
- struct sk_buff *presp = rcu_dereference(ifibss->presp);
+ struct beacon_data *presp = rcu_dereference(ifibss->presp);
if (!presp)
goto out;
- skb = skb_copy(presp, GFP_ATOMIC);
+ if (sdata->vif.csa_active) {
+ if (!is_template)
+ ieee80211_csa_update_counter(vif);
+
+ ieee80211_set_csa(sdata, presp);
+ }
+
+ skb = dev_alloc_skb(local->tx_headroom + presp->head_len +
+ local->hw.extra_beacon_tailroom);
if (!skb)
goto out;
+ skb_reserve(skb, local->tx_headroom);
+ memcpy(skb_put(skb, presp->head_len), presp->head,
+ presp->head_len);
hdr = (struct ieee80211_hdr *) skb->data;
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_BEACON);
} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
- struct ieee80211_mgmt *mgmt;
- u8 *pos;
- int hdr_len = offsetof(struct ieee80211_mgmt, u.beacon) +
- sizeof(mgmt->u.beacon);
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ struct beacon_data *bcn = rcu_dereference(ifmsh->beacon);
-#ifdef CONFIG_MAC80211_MESH
- if (!sdata->u.mesh.mesh_id_len)
+ if (!bcn)
goto out;
-#endif
+
+ if (sdata->vif.csa_active) {
+ if (!is_template)
+ /* TODO: For mesh csa_counter is in TU, so
+ * decrementing it by one isn't correct, but
+ * for now we leave it consistent with overall
+ * mac80211's behavior.
+ */
+ ieee80211_csa_update_counter(vif);
+
+ ieee80211_set_csa(sdata, bcn);
+ }
+
+ if (ifmsh->sync_ops)
+ ifmsh->sync_ops->adjust_tbtt(sdata, bcn);
skb = dev_alloc_skb(local->tx_headroom +
- hdr_len +
- 2 + /* NULL SSID */
- 2 + 8 + /* supported rates */
- 2 + 3 + /* DS params */
- 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
- 2 + sizeof(struct ieee80211_ht_cap) +
- 2 + sizeof(struct ieee80211_ht_info) +
- 2 + sdata->u.mesh.mesh_id_len +
- 2 + sizeof(struct ieee80211_meshconf_ie) +
- sdata->u.mesh.ie_len);
+ bcn->head_len +
+ 256 + /* TIM IE */
+ bcn->tail_len +
+ local->hw.extra_beacon_tailroom);
if (!skb)
goto out;
+ skb_reserve(skb, local->tx_headroom);
+ memcpy(skb_put(skb, bcn->head_len), bcn->head, bcn->head_len);
+ ieee80211_beacon_add_tim(sdata, &ifmsh->ps, skb, is_template);
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
- memset(mgmt, 0, hdr_len);
- mgmt->frame_control =
- cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
- memset(mgmt->da, 0xff, ETH_ALEN);
- memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
- memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
- mgmt->u.beacon.beacon_int =
- cpu_to_le16(sdata->vif.bss_conf.beacon_int);
- mgmt->u.beacon.capab_info |= cpu_to_le16(
- sdata->u.mesh.security ? WLAN_CAPABILITY_PRIVACY : 0);
-
- pos = skb_put(skb, 2);
- *pos++ = WLAN_EID_SSID;
- *pos++ = 0x0;
-
- if (ieee80211_add_srates_ie(&sdata->vif, skb) ||
- mesh_add_ds_params_ie(skb, sdata) ||
- ieee80211_add_ext_srates_ie(&sdata->vif, skb) ||
- mesh_add_rsn_ie(skb, sdata) ||
- mesh_add_ht_cap_ie(skb, sdata) ||
- mesh_add_ht_info_ie(skb, sdata) ||
- mesh_add_meshid_ie(skb, sdata) ||
- mesh_add_meshconf_ie(skb, sdata) ||
- mesh_add_vendor_ies(skb, sdata)) {
- pr_err("o11s: couldn't add ies!\n");
- goto out;
+ if (offs) {
+ offs->tim_offset = bcn->head_len;
+ offs->tim_length = skb->len - bcn->head_len;
}
+
+ memcpy(skb_put(skb, bcn->tail_len), bcn->tail, bcn->tail_len);
} else {
WARN_ON(1);
goto out;
}
+ /* CSA offsets */
+ if (offs) {
+ int i;
+
+ for (i = 0; i < IEEE80211_MAX_CSA_COUNTERS_NUM; i++) {
+ u16 csa_off = sdata->csa_counter_offset_beacon[i];
+
+ if (!csa_off)
+ continue;
+
+ offs->csa_counter_offs[i] = csa_off_base + csa_off;
+ }
+ }
+
+ band = chanctx_conf->def.chan->band;
+
info = IEEE80211_SKB_CB(skb);
info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
@@ -2422,12 +2704,12 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
memset(&txrc, 0, sizeof(txrc));
txrc.hw = hw;
- txrc.sband = sband;
+ txrc.sband = local->hw.wiphy->bands[band];
txrc.bss_conf = &sdata->vif.bss_conf;
txrc.skb = skb;
txrc.reported_rate.idx = -1;
txrc.rate_idx_mask = sdata->rc_rateidx_mask[band];
- if (txrc.rate_idx_mask == (1 << sband->n_bitrates) - 1)
+ if (txrc.rate_idx_mask == (1 << txrc.sband->n_bitrates) - 1)
txrc.max_rate_idx = -1;
else
txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
@@ -2442,6 +2724,32 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
out:
rcu_read_unlock();
return skb;
+
+}
+
+struct sk_buff *
+ieee80211_beacon_get_template(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_mutable_offsets *offs)
+{
+ return __ieee80211_beacon_get(hw, vif, offs, true);
+}
+EXPORT_SYMBOL(ieee80211_beacon_get_template);
+
+struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u16 *tim_offset, u16 *tim_length)
+{
+ struct ieee80211_mutable_offsets offs = {};
+ struct sk_buff *bcn = __ieee80211_beacon_get(hw, vif, &offs, false);
+
+ if (tim_offset)
+ *tim_offset = offs.tim_offset;
+
+ if (tim_length)
+ *tim_length = offs.tim_length;
+
+ return bcn;
}
EXPORT_SYMBOL(ieee80211_beacon_get_tim);
@@ -2449,7 +2757,8 @@ struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ieee80211_if_ap *ap = NULL;
- struct sk_buff *presp = NULL, *skb = NULL;
+ struct sk_buff *skb = NULL;
+ struct probe_resp *presp = NULL;
struct ieee80211_hdr *hdr;
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
@@ -2463,10 +2772,12 @@ struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw,
if (!presp)
goto out;
- skb = skb_copy(presp, GFP_ATOMIC);
+ skb = dev_alloc_skb(presp->len);
if (!skb)
goto out;
+ memcpy(skb_put(skb, presp->len), presp->data, presp->len);
+
hdr = (struct ieee80211_hdr *) skb->data;
memset(hdr->addr1, 0, sizeof(hdr->addr1));
@@ -2553,7 +2864,7 @@ EXPORT_SYMBOL(ieee80211_nullfunc_get);
struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *ssid, size_t ssid_len,
- const u8 *ie, size_t ie_len)
+ size_t tailroom)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_local *local;
@@ -2567,7 +2878,7 @@ struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
ie_ssid_len = 2 + ssid_len;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*hdr) +
- ie_ssid_len + ie_len);
+ ie_ssid_len + tailroom);
if (!skb)
return NULL;
@@ -2577,22 +2888,17 @@ struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
memset(hdr, 0, sizeof(*hdr));
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_REQ);
- memset(hdr->addr1, 0xff, ETH_ALEN);
+ eth_broadcast_addr(hdr->addr1);
memcpy(hdr->addr2, vif->addr, ETH_ALEN);
- memset(hdr->addr3, 0xff, ETH_ALEN);
+ eth_broadcast_addr(hdr->addr3);
pos = skb_put(skb, ie_ssid_len);
*pos++ = WLAN_EID_SSID;
*pos++ = ssid_len;
- if (ssid)
+ if (ssid_len)
memcpy(pos, ssid, ssid_len);
pos += ssid_len;
- if (ie) {
- pos = skb_put(skb, ie_len);
- memcpy(pos, ie, ie_len);
- }
-
return skb;
}
EXPORT_SYMBOL(ieee80211_probereq_get);
@@ -2636,29 +2942,42 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
struct sk_buff *skb = NULL;
struct ieee80211_tx_data tx;
struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_ap *bss = NULL;
- struct beacon_data *beacon;
+ struct ps_data *ps;
struct ieee80211_tx_info *info;
+ struct ieee80211_chanctx_conf *chanctx_conf;
sdata = vif_to_sdata(vif);
- bss = &sdata->u.ap;
rcu_read_lock();
- beacon = rcu_dereference(bss->beacon);
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+
+ if (!chanctx_conf)
+ goto out;
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP) {
+ struct beacon_data *beacon =
+ rcu_dereference(sdata->u.ap.beacon);
+
+ if (!beacon || !beacon->head)
+ goto out;
- if (sdata->vif.type != NL80211_IFTYPE_AP || !beacon || !beacon->head)
+ ps = &sdata->u.ap.ps;
+ } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ ps = &sdata->u.mesh.ps;
+ } else {
goto out;
+ }
- if (bss->dtim_count != 0 || !bss->dtim_bc_mc)
+ if (ps->dtim_count != 0 || !ps->dtim_bc_mc)
goto out; /* send buffered bc/mc only after DTIM beacon */
while (1) {
- skb = skb_dequeue(&bss->ps_bc_buf);
+ skb = skb_dequeue(&ps->bc_buf);
if (!skb)
goto out;
local->total_ps_buffered--;
- if (!skb_queue_empty(&bss->ps_bc_buf) && skb->len >= 2) {
+ if (!skb_queue_empty(&ps->bc_buf) && skb->len >= 2) {
struct ieee80211_hdr *hdr =
(struct ieee80211_hdr *) skb->data;
/* more buffered multicast/broadcast frames ==> set
@@ -2668,6 +2987,8 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
cpu_to_le16(IEEE80211_FCTL_MOREDATA);
}
+ if (sdata->vif.type == NL80211_IFTYPE_AP)
+ sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev);
if (!ieee80211_tx_prepare(sdata, &tx, skb))
break;
dev_kfree_skb_any(skb);
@@ -2676,8 +2997,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
info = IEEE80211_SKB_CB(skb);
tx.flags |= IEEE80211_TX_PS_BUFFERED;
- tx.channel = local->hw.conf.channel;
- info->band = tx.channel->band;
+ info->band = chanctx_conf->def.chan->band;
if (invoke_tx_handlers(&tx))
skb = NULL;
@@ -2688,22 +3008,27 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(ieee80211_get_buffered_bc);
-void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
- struct sk_buff *skb, int tid)
+void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, int tid,
+ enum ieee80211_band band)
{
+ int ac = ieee802_1d_to_ac[tid & 7];
+
skb_set_mac_header(skb, 0);
skb_set_network_header(skb, 0);
skb_set_transport_header(skb, 0);
- skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]);
+ skb_set_queue_mapping(skb, ac);
skb->priority = tid;
+ skb->dev = sdata->dev;
+
/*
* The other path calling ieee80211_xmit is from the tasklet,
* and while we can handle concurrent transmissions locking
* requirements are that we do not come into tx with bhs on.
*/
local_bh_disable();
- ieee80211_xmit(sdata, skb);
+ ieee80211_xmit(sdata, skb, band);
local_bh_enable();
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 19:04:23 +0000