/* misc utils */
-static inline void ieee80211_include_sequence(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_hdr *hdr)
-{
- /* Set the sequence number for this frame. */
- hdr->seq_ctrl = cpu_to_le16(sdata->sequence);
-
- /* Increase the sequence number. */
- sdata->sequence = (sdata->sequence + 0x10) & IEEE80211_SCTL_SEQ;
-}
-
#ifdef CONFIG_MAC80211_LOWTX_FRAME_DUMP
static void ieee80211_dump_frame(const char *ifname, const char *title,
const struct sk_buff *skb)
{
- const struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- u16 fc;
- int hdrlen;
+ const struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ unsigned int hdrlen;
DECLARE_MAC_BUF(mac);
printk(KERN_DEBUG "%s: %s (len=%d)", ifname, title, skb->len);
return;
}
- fc = le16_to_cpu(hdr->frame_control);
- hdrlen = ieee80211_get_hdrlen(fc);
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (hdrlen > skb->len)
hdrlen = skb->len;
if (hdrlen >= 4)
printk(" FC=0x%04x DUR=0x%04x",
- fc, le16_to_cpu(hdr->duration_id));
+ le16_to_cpu(hdr->frame_control), le16_to_cpu(hdr->duration_id));
if (hdrlen >= 10)
printk(" A1=%s", print_mac(mac, hdr->addr1));
if (hdrlen >= 16)
}
#endif /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */
-static u16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
- int next_frag_len)
+static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
+ int next_frag_len)
{
int rate, mrate, erp, dur, i;
- struct ieee80211_rate *txrate = tx->rate;
+ struct ieee80211_rate *txrate;
struct ieee80211_local *local = tx->local;
struct ieee80211_supported_band *sband;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sband = local->hw.wiphy->bands[tx->channel->band];
+ txrate = &sband->bitrates[tx->rate_idx];
erp = 0;
if (tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
/* data/mgmt */
if (0 /* FIX: data/mgmt during CFP */)
- return 32768;
+ return cpu_to_le16(32768);
if (group_addr) /* Group address as the destination - no ACK */
return 0;
tx->sdata->bss_conf.use_short_preamble);
}
- return dur;
-}
-
-static inline int __ieee80211_queue_stopped(const struct ieee80211_local *local,
- int queue)
-{
- return test_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
-}
-
-static inline int __ieee80211_queue_pending(const struct ieee80211_local *local,
- int queue)
-{
- return test_bit(IEEE80211_LINK_STATE_PENDING, &local->state[queue]);
+ return cpu_to_le16(dur);
}
static int inline is_ieee80211_device(struct net_device *dev,
/* tx handlers */
-static ieee80211_tx_result
+static ieee80211_tx_result debug_noinline
ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
{
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- struct sk_buff *skb = tx->skb;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
u32 sta_flags;
- if (unlikely(tx->flags & IEEE80211_TX_INJECTED))
+ if (unlikely(info->flags & IEEE80211_TX_CTL_INJECTED))
return TX_CONTINUE;
if (unlikely(tx->local->sta_sw_scanning) &&
if (tx->flags & IEEE80211_TX_PS_BUFFERED)
return TX_CONTINUE;
- sta_flags = tx->sta ? tx->sta->flags : 0;
+ sta_flags = tx->sta ? get_sta_flags(tx->sta) : 0;
if (likely(tx->flags & IEEE80211_TX_UNICAST)) {
if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
return TX_CONTINUE;
}
-static ieee80211_tx_result
-ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
-
- if (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)) >= 24)
- ieee80211_include_sequence(tx->sdata, hdr);
-
- return TX_CONTINUE;
-}
-
/* This function is called whenever the AP is about to exceed the maximum limit
* of buffered frames for power saving STAs. This situation should not really
* happen often during normal operation, so dropping the oldest buffered packet
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
struct ieee80211_if_ap *ap;
- if (sdata->dev == local->mdev ||
- sdata->vif.type != IEEE80211_IF_TYPE_AP)
+ if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
continue;
ap = &sdata->u.ap;
skb = skb_dequeue(&ap->ps_bc_buf);
rcu_read_unlock();
local->total_ps_buffered = total;
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "%s: PS buffers full - purged %d frames\n",
wiphy_name(local->hw.wiphy), purged);
+#endif
}
static ieee80211_tx_result
ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+
/*
* broadcast/multicast frame
*
* This is done either by the hardware or us.
*/
- /* not AP/IBSS or ordered frame */
- if (!tx->sdata->bss || (tx->fc & IEEE80211_FCTL_ORDER))
+ /* powersaving STAs only in AP/VLAN mode */
+ if (!tx->sdata->bss)
+ return TX_CONTINUE;
+
+ /* no buffering for ordered frames */
+ if (tx->fc & IEEE80211_FCTL_ORDER)
return TX_CONTINUE;
/* no stations in PS mode */
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->dev->name);
}
+#endif
dev_kfree_skb(skb_dequeue(&tx->sdata->bss->ps_bc_buf));
} else
tx->local->total_ps_buffered++;
}
/* buffered in hardware */
- tx->control->flags |= IEEE80211_TXCTL_SEND_AFTER_DTIM;
+ info->flags |= IEEE80211_TX_CTL_SEND_AFTER_DTIM;
return TX_CONTINUE;
}
ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
{
struct sta_info *sta = tx->sta;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+ u32 staflags;
DECLARE_MAC_BUF(mac);
if (unlikely(!sta ||
(tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)))
return TX_CONTINUE;
- if (unlikely((sta->flags & WLAN_STA_PS) &&
- !(sta->flags & WLAN_STA_PSPOLL))) {
- struct ieee80211_tx_packet_data *pkt_data;
+ staflags = get_sta_flags(sta);
+
+ if (unlikely((staflags & WLAN_STA_PS) &&
+ !(staflags & WLAN_STA_PSPOLL))) {
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "STA %s aid %d: PS buffer (entries "
"before %d)\n",
purge_old_ps_buffers(tx->local);
if (skb_queue_len(&sta->ps_tx_buf) >= STA_MAX_TX_BUFFER) {
struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf);
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: STA %s TX "
"buffer full - dropping oldest frame\n",
tx->dev->name, print_mac(mac, sta->addr));
}
+#endif
dev_kfree_skb(old);
} else
tx->local->total_ps_buffered++;
if (skb_queue_empty(&sta->ps_tx_buf))
sta_info_set_tim_bit(sta);
- pkt_data = (struct ieee80211_tx_packet_data *)tx->skb->cb;
- pkt_data->jiffies = jiffies;
+ info->control.jiffies = jiffies;
skb_queue_tail(&sta->ps_tx_buf, tx->skb);
return TX_QUEUED;
}
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- else if (unlikely(sta->flags & WLAN_STA_PS)) {
+ else if (unlikely(test_sta_flags(sta, WLAN_STA_PS))) {
printk(KERN_DEBUG "%s: STA %s in PS mode, but pspoll "
"set -> send frame\n", tx->dev->name,
print_mac(mac, sta->addr));
}
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
- sta->flags &= ~WLAN_STA_PSPOLL;
+ clear_sta_flags(sta, WLAN_STA_PSPOLL);
return TX_CONTINUE;
}
-static ieee80211_tx_result
+static ieee80211_tx_result debug_noinline
ieee80211_tx_h_ps_buf(struct ieee80211_tx_data *tx)
{
if (unlikely(tx->flags & IEEE80211_TX_PS_BUFFERED))
return ieee80211_tx_h_multicast_ps_buf(tx);
}
-static ieee80211_tx_result
+static ieee80211_tx_result debug_noinline
ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
{
struct ieee80211_key *key;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
u16 fc = tx->fc;
- if (unlikely(tx->control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
+ if (unlikely(tx->skb->do_not_encrypt))
tx->key = NULL;
else if (tx->sta && (key = rcu_dereference(tx->sta->key)))
tx->key = key;
else if ((key = rcu_dereference(tx->sdata->default_key)))
tx->key = key;
else if (tx->sdata->drop_unencrypted &&
- !(tx->control->flags & IEEE80211_TXCTL_EAPOL_FRAME) &&
- !(tx->flags & IEEE80211_TX_INJECTED)) {
+ (tx->skb->protocol != cpu_to_be16(ETH_P_PAE)) &&
+ !(info->flags & IEEE80211_TX_CTL_INJECTED)) {
I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
return TX_DROP;
} else
}
if (!tx->key || !(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
- tx->control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
+ tx->skb->do_not_encrypt = 1;
return TX_CONTINUE;
}
-static ieee80211_tx_result
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
+{
+ struct rate_selection rsel;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+
+ sband = tx->local->hw.wiphy->bands[tx->channel->band];
+
+ if (likely(tx->rate_idx < 0)) {
+ rate_control_get_rate(tx->dev, sband, tx->skb, &rsel);
+ tx->rate_idx = rsel.rate_idx;
+ if (unlikely(rsel.probe_idx >= 0)) {
+ info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
+ info->control.alt_retry_rate_idx = tx->rate_idx;
+ tx->rate_idx = rsel.probe_idx;
+ } else
+ info->control.alt_retry_rate_idx = -1;
+
+ if (unlikely(tx->rate_idx < 0))
+ return TX_DROP;
+ } else
+ info->control.alt_retry_rate_idx = -1;
+
+ if (tx->sdata->bss_conf.use_cts_prot &&
+ (tx->flags & IEEE80211_TX_FRAGMENTED) && (rsel.nonerp_idx >= 0)) {
+ tx->last_frag_rate_idx = tx->rate_idx;
+ if (rsel.probe_idx >= 0)
+ tx->flags &= ~IEEE80211_TX_PROBE_LAST_FRAG;
+ else
+ tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
+ tx->rate_idx = rsel.nonerp_idx;
+ info->tx_rate_idx = rsel.nonerp_idx;
+ info->flags &= ~IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ } else {
+ tx->last_frag_rate_idx = tx->rate_idx;
+ info->tx_rate_idx = tx->rate_idx;
+ }
+ info->tx_rate_idx = tx->rate_idx;
+
+ return TX_CONTINUE;
+}
+
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_misc(struct ieee80211_tx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+ struct ieee80211_supported_band *sband;
+
+ sband = tx->local->hw.wiphy->bands[tx->channel->band];
+
+ if (tx->sta)
+ info->control.aid = tx->sta->aid;
+
+ if (!info->control.retry_limit) {
+ if (!is_multicast_ether_addr(hdr->addr1)) {
+ int len = min_t(int, tx->skb->len + FCS_LEN,
+ tx->local->fragmentation_threshold);
+ if (len > tx->local->rts_threshold
+ && tx->local->rts_threshold <
+ IEEE80211_MAX_RTS_THRESHOLD) {
+ info->flags |= IEEE80211_TX_CTL_USE_RTS_CTS;
+ info->flags |=
+ IEEE80211_TX_CTL_LONG_RETRY_LIMIT;
+ info->control.retry_limit =
+ tx->local->long_retry_limit;
+ } else {
+ info->control.retry_limit =
+ tx->local->short_retry_limit;
+ }
+ } else {
+ info->control.retry_limit = 1;
+ }
+ }
+
+ if (tx->flags & IEEE80211_TX_FRAGMENTED) {
+ /* Do not use multiple retry rates when sending fragmented
+ * frames.
+ * TODO: The last fragment could still use multiple retry
+ * rates. */
+ info->control.alt_retry_rate_idx = -1;
+ }
+
+ /* Use CTS protection for unicast frames sent using extended rates if
+ * there are associated non-ERP stations and RTS/CTS is not configured
+ * for the frame. */
+ if ((tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) &&
+ (sband->bitrates[tx->rate_idx].flags & IEEE80211_RATE_ERP_G) &&
+ (tx->flags & IEEE80211_TX_UNICAST) &&
+ tx->sdata->bss_conf.use_cts_prot &&
+ !(info->flags & IEEE80211_TX_CTL_USE_RTS_CTS))
+ info->flags |= IEEE80211_TX_CTL_USE_CTS_PROTECT;
+
+ /* Transmit data frames using short preambles if the driver supports
+ * short preambles at the selected rate and short preambles are
+ * available on the network at the current point in time. */
+ if (ieee80211_is_data(hdr->frame_control) &&
+ (sband->bitrates[tx->rate_idx].flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
+ tx->sdata->bss_conf.use_short_preamble &&
+ (!tx->sta || test_sta_flags(tx->sta, WLAN_STA_SHORT_PREAMBLE))) {
+ info->flags |= IEEE80211_TX_CTL_SHORT_PREAMBLE;
+ }
+
+ if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
+ (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
+ struct ieee80211_rate *rate;
+ s8 baserate = -1;
+ int idx;
+
+ /* Do not use multiple retry rates when using RTS/CTS */
+ info->control.alt_retry_rate_idx = -1;
+
+ /* Use min(data rate, max base rate) as CTS/RTS rate */
+ rate = &sband->bitrates[tx->rate_idx];
+
+ for (idx = 0; idx < sband->n_bitrates; idx++) {
+ if (sband->bitrates[idx].bitrate > rate->bitrate)
+ continue;
+ if (tx->sdata->basic_rates & BIT(idx) &&
+ (baserate < 0 ||
+ (sband->bitrates[baserate].bitrate
+ < sband->bitrates[idx].bitrate)))
+ baserate = idx;
+ }
+
+ if (baserate >= 0)
+ info->control.rts_cts_rate_idx = baserate;
+ else
+ info->control.rts_cts_rate_idx = 0;
+ }
+
+ if (tx->sta)
+ info->control.aid = tx->sta->aid;
+
+ return TX_CONTINUE;
+}
+
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_sequence(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;
+ u16 *seq;
+ u8 *qc;
+ int tid;
+
+ /* only for injected frames */
+ if (unlikely(ieee80211_is_ctl(hdr->frame_control)))
+ return TX_CONTINUE;
+
+ if (ieee80211_hdrlen(hdr->frame_control) < 24)
+ return TX_CONTINUE;
+
+ if (!ieee80211_is_data_qos(hdr->frame_control)) {
+ info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
+ return TX_CONTINUE;
+ }
+
+ /*
+ * This should be true for injected/management frames only, for
+ * management frames we have set the IEEE80211_TX_CTL_ASSIGN_SEQ
+ * above since they are not QoS-data frames.
+ */
+ if (!tx->sta)
+ return TX_CONTINUE;
+
+ /* include per-STA, per-TID sequence counter */
+
+ qc = ieee80211_get_qos_ctl(hdr);
+ tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
+ seq = &tx->sta->tid_seq[tid];
+
+ hdr->seq_ctrl = cpu_to_le16(*seq);
+
+ /* Increase the sequence number. */
+ *seq = (*seq + 0x10) & IEEE80211_SCTL_SEQ;
+
+ return TX_CONTINUE;
+}
+
+static ieee80211_tx_result debug_noinline
ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
size_t hdrlen, per_fragm, num_fragm, payload_len, left;
struct sk_buff **frags, *first, *frag;
int i;
if (!(tx->flags & IEEE80211_TX_FRAGMENTED))
return TX_CONTINUE;
+ /*
+ * Warn when submitting a fragmented A-MPDU frame and drop it.
+ * This scenario is handled in __ieee80211_tx_prepare but extra
+ * caution taken here as fragmented ampdu may cause Tx stop.
+ */
+ if (WARN_ON(tx->flags & IEEE80211_TX_CTL_AMPDU ||
+ skb_get_queue_mapping(tx->skb) >=
+ ieee80211_num_regular_queues(&tx->local->hw)))
+ return TX_DROP;
+
first = tx->skb;
- hdrlen = ieee80211_get_hdrlen(tx->fc);
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
payload_len = first->len - hdrlen;
per_fragm = frag_threshold - hdrlen - FCS_LEN;
num_fragm = DIV_ROUND_UP(payload_len, per_fragm);
fhdr->seq_ctrl = cpu_to_le16(seq | ((i + 1) & IEEE80211_SCTL_FRAG));
copylen = left > per_fragm ? per_fragm : left;
memcpy(skb_put(frag, copylen), pos, copylen);
+ memcpy(frag->cb, first->cb, sizeof(frag->cb));
+ skb_copy_queue_mapping(frag, first);
+ frag->do_not_encrypt = first->do_not_encrypt;
pos += copylen;
left -= copylen;
return TX_CONTINUE;
fail:
- printk(KERN_DEBUG "%s: failed to fragment frame\n", tx->dev->name);
if (frags) {
for (i = 0; i < num_fragm - 1; i++)
if (frags[i])
return TX_DROP;
}
-static ieee80211_tx_result
+static ieee80211_tx_result debug_noinline
ieee80211_tx_h_encrypt(struct ieee80211_tx_data *tx)
{
if (!tx->key)
return TX_DROP;
}
-static ieee80211_tx_result
-ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx)
{
- struct rate_selection rsel;
- struct ieee80211_supported_band *sband;
-
- sband = tx->local->hw.wiphy->bands[tx->local->hw.conf.channel->band];
-
- if (likely(!tx->rate)) {
- rate_control_get_rate(tx->dev, sband, tx->skb, &rsel);
- tx->rate = rsel.rate;
- if (unlikely(rsel.probe)) {
- tx->control->flags |=
- IEEE80211_TXCTL_RATE_CTRL_PROBE;
- tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
- tx->control->alt_retry_rate = tx->rate;
- tx->rate = rsel.probe;
- } else
- tx->control->alt_retry_rate = NULL;
-
- if (!tx->rate)
- return TX_DROP;
- } else
- tx->control->alt_retry_rate = NULL;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
+ int next_len, i;
+ int group_addr = is_multicast_ether_addr(hdr->addr1);
- if (tx->sdata->bss_conf.use_cts_prot &&
- (tx->flags & IEEE80211_TX_FRAGMENTED) && rsel.nonerp) {
- tx->last_frag_rate = tx->rate;
- if (rsel.probe)
- tx->flags &= ~IEEE80211_TX_PROBE_LAST_FRAG;
- else
- tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
- tx->rate = rsel.nonerp;
- tx->control->tx_rate = rsel.nonerp;
- tx->control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
- } else {
- tx->last_frag_rate = tx->rate;
- tx->control->tx_rate = tx->rate;
+ if (!(tx->flags & IEEE80211_TX_FRAGMENTED)) {
+ hdr->duration_id = ieee80211_duration(tx, group_addr, 0);
+ return TX_CONTINUE;
}
- tx->control->tx_rate = tx->rate;
-
- return TX_CONTINUE;
-}
-static ieee80211_tx_result
-ieee80211_tx_h_misc(struct ieee80211_tx_data *tx)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
- u16 fc = le16_to_cpu(hdr->frame_control);
- u16 dur;
- struct ieee80211_tx_control *control = tx->control;
+ hdr->duration_id = ieee80211_duration(tx, group_addr,
+ tx->extra_frag[0]->len);
- if (!control->retry_limit) {
- if (!is_multicast_ether_addr(hdr->addr1)) {
- if (tx->skb->len + FCS_LEN > tx->local->rts_threshold
- && tx->local->rts_threshold <
- IEEE80211_MAX_RTS_THRESHOLD) {
- control->flags |=
- IEEE80211_TXCTL_USE_RTS_CTS;
- control->flags |=
- IEEE80211_TXCTL_LONG_RETRY_LIMIT;
- control->retry_limit =
- tx->local->long_retry_limit;
- } else {
- control->retry_limit =
- tx->local->short_retry_limit;
- }
+ for (i = 0; i < tx->num_extra_frag; i++) {
+ if (i + 1 < tx->num_extra_frag) {
+ next_len = tx->extra_frag[i + 1]->len;
} else {
- control->retry_limit = 1;
- }
- }
-
- if (tx->flags & IEEE80211_TX_FRAGMENTED) {
- /* Do not use multiple retry rates when sending fragmented
- * frames.
- * TODO: The last fragment could still use multiple retry
- * rates. */
- control->alt_retry_rate = NULL;
- }
-
- /* Use CTS protection for unicast frames sent using extended rates if
- * there are associated non-ERP stations and RTS/CTS is not configured
- * for the frame. */
- if ((tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) &&
- (tx->rate->flags & IEEE80211_RATE_ERP_G) &&
- (tx->flags & IEEE80211_TX_UNICAST) &&
- tx->sdata->bss_conf.use_cts_prot &&
- !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS))
- control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT;
-
- /* Transmit data frames using short preambles if the driver supports
- * short preambles at the selected rate and short preambles are
- * available on the network at the current point in time. */
- if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
- (tx->rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
- tx->sdata->bss_conf.use_short_preamble &&
- (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) {
- tx->control->flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
- }
-
- /* Setup duration field for the first fragment of the frame. Duration
- * for remaining fragments will be updated when they are being sent
- * to low-level driver in ieee80211_tx(). */
- dur = ieee80211_duration(tx, is_multicast_ether_addr(hdr->addr1),
- (tx->flags & IEEE80211_TX_FRAGMENTED) ?
- tx->extra_frag[0]->len : 0);
- hdr->duration_id = cpu_to_le16(dur);
-
- if ((control->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
- (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
- struct ieee80211_supported_band *sband;
- struct ieee80211_rate *rate, *baserate;
- int idx;
-
- sband = tx->local->hw.wiphy->bands[
- tx->local->hw.conf.channel->band];
-
- /* Do not use multiple retry rates when using RTS/CTS */
- control->alt_retry_rate = NULL;
-
- /* Use min(data rate, max base rate) as CTS/RTS rate */
- rate = tx->rate;
- baserate = NULL;
-
- for (idx = 0; idx < sband->n_bitrates; idx++) {
- if (sband->bitrates[idx].bitrate > rate->bitrate)
- continue;
- if (tx->sdata->basic_rates & BIT(idx) &&
- (!baserate ||
- (baserate->bitrate < sband->bitrates[idx].bitrate)))
- baserate = &sband->bitrates[idx];
+ next_len = 0;
+ tx->rate_idx = tx->last_frag_rate_idx;
}
- if (baserate)
- control->rts_cts_rate = baserate;
- else
- control->rts_cts_rate = &sband->bitrates[0];
- }
-
- if (tx->sta) {
- control->aid = tx->sta->aid;
- tx->sta->tx_packets++;
- tx->sta->tx_fragments++;
- tx->sta->tx_bytes += tx->skb->len;
- if (tx->extra_frag) {
- int i;
- tx->sta->tx_fragments += tx->num_extra_frag;
- for (i = 0; i < tx->num_extra_frag; i++) {
- tx->sta->tx_bytes +=
- tx->extra_frag[i]->len;
- }
- }
+ hdr = (struct ieee80211_hdr *)tx->extra_frag[i]->data;
+ hdr->duration_id = ieee80211_duration(tx, 0, next_len);
}
return TX_CONTINUE;
}
-static ieee80211_tx_result
-ieee80211_tx_h_load_stats(struct ieee80211_tx_data *tx)
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_stats(struct ieee80211_tx_data *tx)
{
- struct ieee80211_local *local = tx->local;
- struct sk_buff *skb = tx->skb;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- u32 load = 0, hdrtime;
- struct ieee80211_rate *rate = tx->rate;
-
- /* TODO: this could be part of tx_status handling, so that the number
- * of retries would be known; TX rate should in that case be stored
- * somewhere with the packet */
-
- /* Estimate total channel use caused by this frame */
-
- /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
- * 1 usec = 1/8 * (1080 / 10) = 13.5 */
-
- if (tx->channel->band == IEEE80211_BAND_5GHZ ||
- (tx->channel->band == IEEE80211_BAND_2GHZ &&
- rate->flags & IEEE80211_RATE_ERP_G))
- hdrtime = CHAN_UTIL_HDR_SHORT;
- else
- hdrtime = CHAN_UTIL_HDR_LONG;
-
- load = hdrtime;
- if (!is_multicast_ether_addr(hdr->addr1))
- load += hdrtime;
-
- if (tx->control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
- load += 2 * hdrtime;
- else if (tx->control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
- load += hdrtime;
+ int i;
- /* TODO: optimise again */
- load += skb->len * CHAN_UTIL_RATE_LCM / rate->bitrate;
+ if (!tx->sta)
+ return TX_CONTINUE;
+ tx->sta->tx_packets++;
+ tx->sta->tx_fragments++;
+ tx->sta->tx_bytes += tx->skb->len;
if (tx->extra_frag) {
- int i;
- for (i = 0; i < tx->num_extra_frag; i++) {
- load += 2 * hdrtime;
- load += tx->extra_frag[i]->len *
- tx->rate->bitrate;
- }
+ tx->sta->tx_fragments += tx->num_extra_frag;
+ for (i = 0; i < tx->num_extra_frag; i++)
+ tx->sta->tx_bytes += tx->extra_frag[i]->len;
}
- /* Divide channel_use by 8 to avoid wrapping around the counter */
- load >>= CHAN_UTIL_SHIFT;
- local->channel_use_raw += load;
- if (tx->sta)
- tx->sta->channel_use_raw += load;
- tx->sdata->channel_use_raw += load;
-
return TX_CONTINUE;
}
-typedef ieee80211_tx_result (*ieee80211_tx_handler)(struct ieee80211_tx_data *);
-static ieee80211_tx_handler ieee80211_tx_handlers[] =
-{
- ieee80211_tx_h_check_assoc,
- ieee80211_tx_h_sequence,
- ieee80211_tx_h_ps_buf,
- ieee80211_tx_h_select_key,
- ieee80211_tx_h_michael_mic_add,
- ieee80211_tx_h_fragment,
- ieee80211_tx_h_encrypt,
- ieee80211_tx_h_rate_ctrl,
- ieee80211_tx_h_misc,
- ieee80211_tx_h_load_stats,
- NULL
-};
-
/* actual transmit path */
/*
(struct ieee80211_radiotap_header *) skb->data;
struct ieee80211_supported_band *sband;
int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len);
- struct ieee80211_tx_control *control = tx->control;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- sband = tx->local->hw.wiphy->bands[tx->local->hw.conf.channel->band];
+ sband = tx->local->hw.wiphy->bands[tx->channel->band];
- control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
- tx->flags |= IEEE80211_TX_INJECTED;
+ skb->do_not_encrypt = 1;
+ info->flags |= IEEE80211_TX_CTL_INJECTED;
tx->flags &= ~IEEE80211_TX_FRAGMENTED;
/*
r = &sband->bitrates[i];
if (r->bitrate == target_rate) {
- tx->rate = r;
+ tx->rate_idx = i;
break;
}
}
* radiotap uses 0 for 1st ant, mac80211 is 1 for
* 1st ant
*/
- control->antenna_sel_tx = (*iterator.this_arg) + 1;
+ info->antenna_sel_tx = (*iterator.this_arg) + 1;
break;
#if 0
skb_trim(skb, skb->len - FCS_LEN);
}
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_WEP)
- control->flags &=
- ~IEEE80211_TXCTL_DO_NOT_ENCRYPT;
+ tx->skb->do_not_encrypt = 0;
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG)
tx->flags |= IEEE80211_TX_FRAGMENTED;
break;
static ieee80211_tx_result
__ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
struct sk_buff *skb,
- struct net_device *dev,
- struct ieee80211_tx_control *control)
+ struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_hdr *hdr;
struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int hdrlen;
tx->dev = dev; /* use original interface */
tx->local = local;
tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- tx->control = control;
+ tx->channel = local->hw.conf.channel;
+ tx->rate_idx = -1;
+ tx->last_frag_rate_idx = -1;
/*
* Set this flag (used below to indicate "automatic fragmentation"),
* it will be cleared/left by radiotap as desired.
if (is_multicast_ether_addr(hdr->addr1)) {
tx->flags &= ~IEEE80211_TX_UNICAST;
- control->flags |= IEEE80211_TXCTL_NO_ACK;
+ info->flags |= IEEE80211_TX_CTL_NO_ACK;
} else {
tx->flags |= IEEE80211_TX_UNICAST;
- control->flags &= ~IEEE80211_TXCTL_NO_ACK;
+ info->flags &= ~IEEE80211_TX_CTL_NO_ACK;
}
if (tx->flags & IEEE80211_TX_FRAGMENTED) {
if ((tx->flags & IEEE80211_TX_UNICAST) &&
skb->len + FCS_LEN > local->fragmentation_threshold &&
- !local->ops->set_frag_threshold)
+ !local->ops->set_frag_threshold &&
+ !(info->flags & IEEE80211_TX_CTL_AMPDU))
tx->flags |= IEEE80211_TX_FRAGMENTED;
else
tx->flags &= ~IEEE80211_TX_FRAGMENTED;
}
if (!tx->sta)
- control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT;
- else if (tx->sta->flags & WLAN_STA_CLEAR_PS_FILT) {
- control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT;
- tx->sta->flags &= ~WLAN_STA_CLEAR_PS_FILT;
- }
+ info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
+ else if (test_and_clear_sta_flags(tx->sta, WLAN_STA_CLEAR_PS_FILT))
+ info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
hdrlen = ieee80211_get_hdrlen(tx->fc);
if (skb->len > hdrlen + sizeof(rfc1042_header) + 2) {
u8 *pos = &skb->data[hdrlen + sizeof(rfc1042_header)];
tx->ethertype = (pos[0] << 8) | pos[1];
}
- control->flags |= IEEE80211_TXCTL_FIRST_FRAGMENT;
+ info->flags |= IEEE80211_TX_CTL_FIRST_FRAGMENT;
return TX_CONTINUE;
}
*/
static int ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
struct sk_buff *skb,
- struct net_device *mdev,
- struct ieee80211_tx_control *control)
+ struct net_device *mdev)
{
- struct ieee80211_tx_packet_data *pkt_data;
struct net_device *dev;
- pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
- dev = dev_get_by_index(&init_net, pkt_data->ifindex);
+ dev = dev_get_by_index(&init_net, skb->iif);
if (unlikely(dev && !is_ieee80211_device(dev, mdev))) {
dev_put(dev);
dev = NULL;
if (unlikely(!dev))
return -ENODEV;
/* initialises tx with control */
- __ieee80211_tx_prepare(tx, skb, dev, control);
+ __ieee80211_tx_prepare(tx, skb, dev);
dev_put(dev);
return 0;
}
static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
struct ieee80211_tx_data *tx)
{
- struct ieee80211_tx_control *control = tx->control;
+ struct ieee80211_tx_info *info;
int ret, i;
- if (!ieee80211_qdisc_installed(local->mdev) &&
- __ieee80211_queue_stopped(local, 0)) {
- netif_stop_queue(local->mdev);
- return IEEE80211_TX_AGAIN;
- }
if (skb) {
+ if (netif_subqueue_stopped(local->mdev, skb))
+ return IEEE80211_TX_AGAIN;
+ info = IEEE80211_SKB_CB(skb);
+
ieee80211_dump_frame(wiphy_name(local->hw.wiphy),
"TX to low-level driver", skb);
- ret = local->ops->tx(local_to_hw(local), skb, control);
+ ret = local->ops->tx(local_to_hw(local), skb);
if (ret)
return IEEE80211_TX_AGAIN;
local->mdev->trans_start = jiffies;
ieee80211_led_tx(local, 1);
}
if (tx->extra_frag) {
- control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS |
- IEEE80211_TXCTL_USE_CTS_PROTECT |
- IEEE80211_TXCTL_CLEAR_PS_FILT |
- IEEE80211_TXCTL_FIRST_FRAGMENT);
for (i = 0; i < tx->num_extra_frag; i++) {
if (!tx->extra_frag[i])
continue;
- if (__ieee80211_queue_stopped(local, control->queue))
+ info = IEEE80211_SKB_CB(tx->extra_frag[i]);
+ info->flags &= ~(IEEE80211_TX_CTL_USE_RTS_CTS |
+ IEEE80211_TX_CTL_USE_CTS_PROTECT |
+ IEEE80211_TX_CTL_CLEAR_PS_FILT |
+ IEEE80211_TX_CTL_FIRST_FRAGMENT);
+ if (netif_subqueue_stopped(local->mdev,
+ tx->extra_frag[i]))
return IEEE80211_TX_FRAG_AGAIN;
if (i == tx->num_extra_frag) {
- control->tx_rate = tx->last_frag_rate;
+ info->tx_rate_idx = tx->last_frag_rate_idx;
if (tx->flags & IEEE80211_TX_PROBE_LAST_FRAG)
- control->flags |=
- IEEE80211_TXCTL_RATE_CTRL_PROBE;
+ info->flags |=
+ IEEE80211_TX_CTL_RATE_CTRL_PROBE;
else
- control->flags &=
- ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
+ info->flags &=
+ ~IEEE80211_TX_CTL_RATE_CTRL_PROBE;
}
ieee80211_dump_frame(wiphy_name(local->hw.wiphy),
"TX to low-level driver",
tx->extra_frag[i]);
ret = local->ops->tx(local_to_hw(local),
- tx->extra_frag[i],
- control);
+ tx->extra_frag[i]);
if (ret)
return IEEE80211_TX_FRAG_AGAIN;
local->mdev->trans_start = jiffies;
return IEEE80211_TX_OK;
}
-static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
- struct ieee80211_tx_control *control)
+/*
+ * Invoke TX handlers, return 0 on success and non-zero if the
+ * frame was dropped or queued.
+ */
+static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
+{
+ struct sk_buff *skb = tx->skb;
+ ieee80211_tx_result res = TX_DROP;
+ int i;
+
+#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)
+ /* handlers after fragment must be aware of tx info fragmentation! */
+ CALL_TXH(ieee80211_tx_h_encrypt)
+ CALL_TXH(ieee80211_tx_h_calculate_duration)
+ CALL_TXH(ieee80211_tx_h_stats)
+#undef CALL_TXH
+
+ txh_done:
+ if (unlikely(res == TX_DROP)) {
+ I802_DEBUG_INC(tx->local->tx_handlers_drop);
+ dev_kfree_skb(skb);
+ for (i = 0; i < tx->num_extra_frag; i++)
+ if (tx->extra_frag[i])
+ dev_kfree_skb(tx->extra_frag[i]);
+ kfree(tx->extra_frag);
+ return -1;
+ } else if (unlikely(res == TX_QUEUED)) {
+ I802_DEBUG_INC(tx->local->tx_handlers_queued);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
- ieee80211_tx_handler *handler;
struct ieee80211_tx_data tx;
- ieee80211_tx_result res = TX_DROP, res_prepare;
- int ret, i, retries = 0;
+ ieee80211_tx_result res_prepare;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ int ret, i;
+ u16 queue;
- WARN_ON(__ieee80211_queue_pending(local, control->queue));
+ queue = skb_get_queue_mapping(skb);
+
+ WARN_ON(test_bit(queue, local->queues_pending));
if (unlikely(skb->len < 10)) {
dev_kfree_skb(skb);
rcu_read_lock();
/* initialises tx */
- res_prepare = __ieee80211_tx_prepare(&tx, skb, dev, control);
+ res_prepare = __ieee80211_tx_prepare(&tx, skb, dev);
if (res_prepare == TX_DROP) {
dev_kfree_skb(skb);
sta = tx.sta;
tx.channel = local->hw.conf.channel;
+ info->band = tx.channel->band;
- for (handler = ieee80211_tx_handlers; *handler != NULL;
- handler++) {
- res = (*handler)(&tx);
- if (res != TX_CONTINUE)
- break;
- }
-
- skb = tx.skb; /* handlers are allowed to change skb */
-
- if (unlikely(res == TX_DROP)) {
- I802_DEBUG_INC(local->tx_handlers_drop);
- goto drop;
- }
-
- if (unlikely(res == TX_QUEUED)) {
- I802_DEBUG_INC(local->tx_handlers_queued);
- rcu_read_unlock();
- return 0;
- }
-
- if (tx.extra_frag) {
- for (i = 0; i < tx.num_extra_frag; i++) {
- int next_len, dur;
- struct ieee80211_hdr *hdr =
- (struct ieee80211_hdr *)
- tx.extra_frag[i]->data;
-
- if (i + 1 < tx.num_extra_frag) {
- next_len = tx.extra_frag[i + 1]->len;
- } else {
- next_len = 0;
- tx.rate = tx.last_frag_rate;
- }
- dur = ieee80211_duration(&tx, 0, next_len);
- hdr->duration_id = cpu_to_le16(dur);
- }
- }
+ if (invoke_tx_handlers(&tx))
+ goto out;
retry:
ret = __ieee80211_tx(local, skb, &tx);
if (ret) {
- struct ieee80211_tx_stored_packet *store =
- &local->pending_packet[control->queue];
+ struct ieee80211_tx_stored_packet *store;
+
+ /*
+ * Since there are no fragmented frames on A-MPDU
+ * queues, there's no reason for a driver to reject
+ * a frame there, warn and drop it.
+ */
+ if (WARN_ON(queue >= ieee80211_num_regular_queues(&local->hw)))
+ goto drop;
+
+ store = &local->pending_packet[queue];
if (ret == IEEE80211_TX_FRAG_AGAIN)
skb = NULL;
- set_bit(IEEE80211_LINK_STATE_PENDING,
- &local->state[control->queue]);
+
+ set_bit(queue, local->queues_pending);
smp_mb();
- /* When the driver gets out of buffers during sending of
- * fragments and calls ieee80211_stop_queue, there is
- * a small window between IEEE80211_LINK_STATE_XOFF and
- * IEEE80211_LINK_STATE_PENDING flags are set. If a buffer
+ /*
+ * When the driver gets out of buffers during sending of
+ * fragments and calls ieee80211_stop_queue, the netif
+ * subqueue is stopped. There is, however, a small window
+ * in which the PENDING bit is not yet set. If a buffer
* gets available in that window (i.e. driver calls
* ieee80211_wake_queue), we would end up with ieee80211_tx
- * called with IEEE80211_LINK_STATE_PENDING. Prevent this by
+ * called with the PENDING bit still set. Prevent this by
* continuing transmitting here when that situation is
- * possible to have happened. */
- if (!__ieee80211_queue_stopped(local, control->queue)) {
- clear_bit(IEEE80211_LINK_STATE_PENDING,
- &local->state[control->queue]);
- retries++;
- /*
- * Driver bug, it's rejecting packets but
- * not stopping queues.
- */
- if (WARN_ON_ONCE(retries > 5))
- goto drop;
+ * possible to have happened.
+ */
+ if (!__netif_subqueue_stopped(local->mdev, queue)) {
+ clear_bit(queue, local->queues_pending);
goto retry;
}
- memcpy(&store->control, control,
- sizeof(struct ieee80211_tx_control));
store->skb = skb;
store->extra_frag = tx.extra_frag;
store->num_extra_frag = tx.num_extra_frag;
- store->last_frag_rate = tx.last_frag_rate;
+ store->last_frag_rate_idx = tx.last_frag_rate_idx;
store->last_frag_rate_ctrl_probe =
!!(tx.flags & IEEE80211_TX_PROBE_LAST_FRAG);
}
+ out:
rcu_read_unlock();
return 0;
/* device xmit handlers */
+static int ieee80211_skb_resize(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ int head_need, bool may_encrypt)
+{
+ int tail_need = 0;
+
+ /*
+ * This could be optimised, devices that do full hardware
+ * crypto (including TKIP MMIC) need no tailroom... But we
+ * have no drivers for such devices currently.
+ */
+ if (may_encrypt) {
+ tail_need = IEEE80211_ENCRYPT_TAILROOM;
+ tail_need -= skb_tailroom(skb);
+ tail_need = max_t(int, tail_need, 0);
+ }
+
+ if (head_need || tail_need) {
+ /* Sorry. Can't account for this any more */
+ skb_orphan(skb);
+ }
+
+ if (skb_header_cloned(skb))
+ I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
+ else
+ I802_DEBUG_INC(local->tx_expand_skb_head);
+
+ if (pskb_expand_head(skb, head_need, tail_need, GFP_ATOMIC)) {
+ printk(KERN_DEBUG "%s: failed to reallocate TX buffer\n",
+ wiphy_name(local->hw.wiphy));
+ return -ENOMEM;
+ }
+
+ /* update truesize too */
+ skb->truesize += head_need + tail_need;
+
+ return 0;
+}
+
int ieee80211_master_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
- struct ieee80211_tx_control control;
- struct ieee80211_tx_packet_data *pkt_data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct net_device *odev = NULL;
struct ieee80211_sub_if_data *osdata;
int headroom;
+ bool may_encrypt;
int ret;
- /*
- * copy control out of the skb so other people can use skb->cb
- */
- pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
- memset(&control, 0, sizeof(struct ieee80211_tx_control));
-
- if (pkt_data->ifindex)
- odev = dev_get_by_index(&init_net, pkt_data->ifindex);
+ if (skb->iif)
+ odev = dev_get_by_index(&init_net, skb->iif);
if (unlikely(odev && !is_ieee80211_device(odev, dev))) {
dev_put(odev);
odev = NULL;
dev_kfree_skb(skb);
return 0;
}
+
+ memset(info, 0, sizeof(*info));
+
+ info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+
osdata = IEEE80211_DEV_TO_SUB_IF(odev);
- headroom = osdata->local->tx_headroom + IEEE80211_ENCRYPT_HEADROOM;
- if (skb_headroom(skb) < headroom) {
- if (pskb_expand_head(skb, headroom, 0, GFP_ATOMIC)) {
- dev_kfree_skb(skb);
- dev_put(odev);
- return 0;
+ if (ieee80211_vif_is_mesh(&osdata->vif) &&
+ ieee80211_is_data(hdr->frame_control)) {
+ if (ieee80211_is_data(hdr->frame_control)) {
+ if (is_multicast_ether_addr(hdr->addr3))
+ memcpy(hdr->addr1, hdr->addr3, ETH_ALEN);
+ else
+ if (mesh_nexthop_lookup(skb, odev))
+ return 0;
+ if (memcmp(odev->dev_addr, hdr->addr4, ETH_ALEN) != 0)
+ IEEE80211_IFSTA_MESH_CTR_INC(&osdata->u.sta,
+ fwded_frames);
}
}
- control.vif = &osdata->vif;
- control.type = osdata->vif.type;
- if (pkt_data->flags & IEEE80211_TXPD_REQ_TX_STATUS)
- control.flags |= IEEE80211_TXCTL_REQ_TX_STATUS;
- if (pkt_data->flags & IEEE80211_TXPD_DO_NOT_ENCRYPT)
- control.flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
- if (pkt_data->flags & IEEE80211_TXPD_REQUEUE)
- control.flags |= IEEE80211_TXCTL_REQUEUE;
- if (pkt_data->flags & IEEE80211_TXPD_EAPOL_FRAME)
- control.flags |= IEEE80211_TXCTL_EAPOL_FRAME;
- if (pkt_data->flags & IEEE80211_TXPD_AMPDU)
- control.flags |= IEEE80211_TXCTL_AMPDU;
- control.queue = pkt_data->queue;
-
- ret = ieee80211_tx(odev, skb, &control);
+ may_encrypt = !skb->do_not_encrypt;
+
+ headroom = osdata->local->tx_headroom;
+ if (may_encrypt)
+ headroom += IEEE80211_ENCRYPT_HEADROOM;
+ headroom -= skb_headroom(skb);
+ headroom = max_t(int, 0, headroom);
+
+ if (ieee80211_skb_resize(osdata->local, skb, headroom, may_encrypt)) {
+ dev_kfree_skb(skb);
+ dev_put(odev);
+ return 0;
+ }
+
+ info->control.vif = &osdata->vif;
+ ret = ieee80211_tx(odev, skb);
dev_put(odev);
return ret;
struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_packet_data *pkt_data;
struct ieee80211_radiotap_header *prthdr =
(struct ieee80211_radiotap_header *)skb->data;
u16 len_rthdr;
skb->dev = local->mdev;
- pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
- memset(pkt_data, 0, sizeof(*pkt_data));
/* needed because we set skb device to master */
- pkt_data->ifindex = dev->ifindex;
+ skb->iif = dev->ifindex;
- pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
+ /* sometimes we do encrypt injected frames, will be fixed
+ * up in radiotap parser if not wanted */
+ skb->do_not_encrypt = 0;
/*
* fix up the pointers accounting for the radiotap
struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_packet_data *pkt_data;
struct ieee80211_sub_if_data *sdata;
int ret = 1, head_need;
- u16 ethertype, hdrlen, meshhdrlen = 0, fc;
+ u16 ethertype, hdrlen, meshhdrlen = 0;
+ __le16 fc;
struct ieee80211_hdr hdr;
struct ieee80211s_hdr mesh_hdr;
const u8 *encaps_data;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (unlikely(skb->len < ETH_HLEN)) {
- printk(KERN_DEBUG "%s: short skb (len=%d)\n",
- dev->name, skb->len);
ret = 0;
goto fail;
}
/* convert Ethernet header to proper 802.11 header (based on
* operation mode) */
ethertype = (skb->data[12] << 8) | skb->data[13];
- fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
+ fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
switch (sdata->vif.type) {
case IEEE80211_IF_TYPE_AP:
case IEEE80211_IF_TYPE_VLAN:
- fc |= IEEE80211_FCTL_FROMDS;
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
/* DA BSSID SA */
memcpy(hdr.addr1, skb->data, ETH_ALEN);
memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
hdrlen = 24;
break;
case IEEE80211_IF_TYPE_WDS:
- fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
/* RA TA DA SA */
memcpy(hdr.addr1, sdata->u.wds.remote_addr, ETH_ALEN);
memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
break;
#ifdef CONFIG_MAC80211_MESH
case IEEE80211_IF_TYPE_MESH_POINT:
- fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
/* RA TA DA SA */
- if (is_multicast_ether_addr(skb->data))
- memcpy(hdr.addr1, skb->data, ETH_ALEN);
- else if (mesh_nexthop_lookup(hdr.addr1, skb, dev))
- return 0;
+ memset(hdr.addr1, 0, 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);
- if (skb->pkt_type == PACKET_OTHERHOST) {
- /* Forwarded frame, keep mesh ttl and seqnum */
- struct ieee80211s_hdr *prev_meshhdr;
- prev_meshhdr = ((struct ieee80211s_hdr *)skb->cb);
- meshhdrlen = ieee80211_get_mesh_hdrlen(prev_meshhdr);
- memcpy(&mesh_hdr, prev_meshhdr, meshhdrlen);
- sdata->u.sta.mshstats.fwded_frames++;
- } else {
- if (!sdata->u.sta.mshcfg.dot11MeshTTL) {
- /* Do not send frames with mesh_ttl == 0 */
- sdata->u.sta.mshstats.dropped_frames_ttl++;
- ret = 0;
- goto fail;
- }
- meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr,
- sdata);
+ if (!sdata->u.sta.mshcfg.dot11MeshTTL) {
+ /* Do not send frames with mesh_ttl == 0 */
+ sdata->u.sta.mshstats.dropped_frames_ttl++;
+ ret = 0;
+ goto fail;
}
+ meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr, sdata);
hdrlen = 30;
break;
#endif
case IEEE80211_IF_TYPE_STA:
- fc |= IEEE80211_FCTL_TODS;
+ fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
/* BSSID SA DA */
memcpy(hdr.addr1, sdata->u.sta.bssid, ETH_ALEN);
memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
rcu_read_lock();
sta = sta_info_get(local, hdr.addr1);
if (sta)
- sta_flags = sta->flags;
+ sta_flags = get_sta_flags(sta);
rcu_read_unlock();
}
- /* receiver is QoS enabled, use a QoS type frame */
- if (sta_flags & WLAN_STA_WME) {
- fc |= IEEE80211_STYPE_QOS_DATA;
+ /* receiver and we are QoS enabled, use a QoS type frame */
+ if (sta_flags & WLAN_STA_WME &&
+ ieee80211_num_regular_queues(&local->hw) >= 4) {
+ fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
hdrlen += 2;
}
* Drop unicast frames to unauthorised stations unless they are
* EAPOL frames from the local station.
*/
- if (unlikely(!is_multicast_ether_addr(hdr.addr1) &&
+ if (!ieee80211_vif_is_mesh(&sdata->vif) &&
+ unlikely(!is_multicast_ether_addr(hdr.addr1) &&
!(sta_flags & WLAN_STA_AUTHORIZED) &&
!(ethertype == ETH_P_PAE &&
compare_ether_addr(dev->dev_addr,
goto fail;
}
- hdr.frame_control = cpu_to_le16(fc);
+ hdr.frame_control = fc;
hdr.duration_id = 0;
hdr.seq_ctrl = 0;
* build in headroom in __dev_alloc_skb() (linux/skbuff.h) and
* alloc_skb() (net/core/skbuff.c)
*/
- head_need = hdrlen + encaps_len + meshhdrlen + local->tx_headroom;
- head_need -= skb_headroom(skb);
+ head_need = hdrlen + encaps_len + meshhdrlen - skb_headroom(skb);
- /* We are going to modify skb data, so make a copy of it if happens to
- * be cloned. This could happen, e.g., with Linux bridge code passing
- * us broadcast frames. */
+ /*
+ * So we need to modify the skb header and hence need a copy of
+ * that. The head_need variable above doesn't, so far, include
+ * the needed header space that we don't need right away. If we
+ * can, then we don't reallocate right now but only after the
+ * frame arrives at the master device (if it does...)
+ *
+ * If we cannot, however, then we will reallocate to include all
+ * the ever needed space. Also, if we need to reallocate it anyway,
+ * make it big enough for everything we may ever need.
+ */
if (head_need > 0 || skb_cloned(skb)) {
-#if 0
- printk(KERN_DEBUG "%s: need to reallocate buffer for %d bytes "
- "of headroom\n", dev->name, head_need);
-#endif
-
- if (skb_cloned(skb))
- I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
- else
- I802_DEBUG_INC(local->tx_expand_skb_head);
- /* Since we have to reallocate the buffer, make sure that there
- * is enough room for possible WEP IV/ICV and TKIP (8 bytes
- * before payload and 12 after). */
- if (pskb_expand_head(skb, (head_need > 0 ? head_need + 8 : 8),
- 12, GFP_ATOMIC)) {
- printk(KERN_DEBUG "%s: failed to reallocate TX buffer"
- "\n", dev->name);
+ head_need += IEEE80211_ENCRYPT_HEADROOM;
+ head_need += local->tx_headroom;
+ head_need = max_t(int, 0, head_need);
+ if (ieee80211_skb_resize(local, skb, head_need, true))
goto fail;
- }
}
if (encaps_data) {
h_pos += meshhdrlen;
}
- if (fc & IEEE80211_STYPE_QOS_DATA) {
+ if (ieee80211_is_data_qos(fc)) {
__le16 *qos_control;
qos_control = (__le16*) skb_push(skb, 2);
nh_pos += hdrlen;
h_pos += hdrlen;
- pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
- memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
- pkt_data->ifindex = dev->ifindex;
- if (ethertype == ETH_P_PAE)
- pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME;
+ skb->iif = dev->ifindex;
skb->dev = local->mdev;
dev->stats.tx_packets++;
return ret;
}
-/* helper functions for pending packets for when queues are stopped */
+/*
+ * ieee80211_clear_tx_pending may not be called in a context where
+ * it is possible that it packets could come in again.
+ */
void ieee80211_clear_tx_pending(struct ieee80211_local *local)
{
int i, j;
struct ieee80211_tx_stored_packet *store;
- for (i = 0; i < local->hw.queues; i++) {
- if (!__ieee80211_queue_pending(local, i))
+ for (i = 0; i < ieee80211_num_regular_queues(&local->hw); i++) {
+ if (!test_bit(i, local->queues_pending))
continue;
store = &local->pending_packet[i];
kfree_skb(store->skb);
for (j = 0; j < store->num_extra_frag; j++)
kfree_skb(store->extra_frag[j]);
kfree(store->extra_frag);
- clear_bit(IEEE80211_LINK_STATE_PENDING, &local->state[i]);
+ clear_bit(i, local->queues_pending);
}
}
+/*
+ * Transmit all pending packets. Called from tasklet, locks master device
+ * TX lock so that no new packets can come in.
+ */
void ieee80211_tx_pending(unsigned long data)
{
struct ieee80211_local *local = (struct ieee80211_local *)data;
struct net_device *dev = local->mdev;
struct ieee80211_tx_stored_packet *store;
struct ieee80211_tx_data tx;
- int i, ret, reschedule = 0;
+ int i, ret;
netif_tx_lock_bh(dev);
- for (i = 0; i < local->hw.queues; i++) {
- if (__ieee80211_queue_stopped(local, i))
+ for (i = 0; i < ieee80211_num_regular_queues(&local->hw); i++) {
+ /* Check that this queue is ok */
+ if (__netif_subqueue_stopped(local->mdev, i) &&
+ !test_bit(i, local->queues_pending_run))
continue;
- if (!__ieee80211_queue_pending(local, i)) {
- reschedule = 1;
+
+ if (!test_bit(i, local->queues_pending)) {
+ clear_bit(i, local->queues_pending_run);
+ ieee80211_wake_queue(&local->hw, i);
continue;
}
+
+ clear_bit(i, local->queues_pending_run);
+ netif_start_subqueue(local->mdev, i);
+
store = &local->pending_packet[i];
- tx.control = &store->control;
tx.extra_frag = store->extra_frag;
tx.num_extra_frag = store->num_extra_frag;
- tx.last_frag_rate = store->last_frag_rate;
+ tx.last_frag_rate_idx = store->last_frag_rate_idx;
tx.flags = 0;
if (store->last_frag_rate_ctrl_probe)
tx.flags |= IEEE80211_TX_PROBE_LAST_FRAG;
if (ret == IEEE80211_TX_FRAG_AGAIN)
store->skb = NULL;
} else {
- clear_bit(IEEE80211_LINK_STATE_PENDING,
- &local->state[i]);
- reschedule = 1;
+ clear_bit(i, local->queues_pending);
+ ieee80211_wake_queue(&local->hw, i);
}
}
netif_tx_unlock_bh(dev);
- if (reschedule) {
- if (!ieee80211_qdisc_installed(dev)) {
- if (!__ieee80211_queue_stopped(local, 0))
- netif_wake_queue(dev);
- } else
- netif_schedule(dev);
- }
}
/* functions for drivers to get certain frames */
}
struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_tx_control *control)
+ struct ieee80211_vif *vif)
{
struct ieee80211_local *local = hw_to_local(hw);
- struct sk_buff *skb;
+ struct sk_buff *skb = NULL;
+ struct ieee80211_tx_info *info;
struct net_device *bdev;
struct ieee80211_sub_if_data *sdata = NULL;
struct ieee80211_if_ap *ap = NULL;
+ struct ieee80211_if_sta *ifsta = NULL;
struct rate_selection rsel;
struct beacon_data *beacon;
struct ieee80211_supported_band *sband;
struct ieee80211_mgmt *mgmt;
int *num_beacons;
- bool err = true;
+ enum ieee80211_band band = local->hw.conf.channel->band;
u8 *pos;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sband = local->hw.wiphy->bands[band];
rcu_read_lock();
memcpy(skb_put(skb, beacon->head_len), beacon->head,
beacon->head_len);
- ieee80211_include_sequence(sdata,
- (struct ieee80211_hdr *)skb->data);
-
/*
* Not very nice, but we want to allow the driver to call
* ieee80211_beacon_get() as a response to the set_tim()
beacon->tail, beacon->tail_len);
num_beacons = &ap->num_beacons;
+ } else
+ goto out;
+ } else if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ struct ieee80211_hdr *hdr;
+ ifsta = &sdata->u.sta;
- err = false;
- }
+ if (!ifsta->probe_resp)
+ goto out;
+
+ skb = skb_copy(ifsta->probe_resp, GFP_ATOMIC);
+ if (!skb)
+ goto out;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ hdr->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_BEACON);
+
+ num_beacons = &ifsta->num_beacons;
} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
/* headroom, head length, tail length and maximum TIM length */
skb = dev_alloc_skb(local->tx_headroom + 400);
mgmt = (struct ieee80211_mgmt *)
skb_put(skb, 24 + sizeof(mgmt->u.beacon));
memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_BEACON);
+ mgmt->frame_control =
+ 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 */
mesh_mgmt_ies_add(skb, sdata->dev);
num_beacons = &sdata->u.sta.num_beacons;
-
- err = false;
+ } else {
+ WARN_ON(1);
+ goto out;
}
- if (err) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "no beacon data avail for %s\n",
- bdev->name);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ info = IEEE80211_SKB_CB(skb);
+
+ skb->do_not_encrypt = 1;
+
+ info->band = band;
+ rate_control_get_rate(local->mdev, sband, skb, &rsel);
+
+ if (unlikely(rsel.rate_idx < 0)) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: ieee80211_beacon_get: "
+ "no rate found\n",
+ wiphy_name(local->hw.wiphy));
+ }
+ dev_kfree_skb_any(skb);
skb = NULL;
goto out;
}
- if (control) {
- rate_control_get_rate(local->mdev, sband, skb, &rsel);
- if (!rsel.rate) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: ieee80211_beacon_get: "
- "no rate found\n",
- wiphy_name(local->hw.wiphy));
- }
- dev_kfree_skb(skb);
- skb = NULL;
- goto out;
- }
+ info->control.vif = vif;
+ info->tx_rate_idx = rsel.rate_idx;
+
+ info->flags |= IEEE80211_TX_CTL_NO_ACK;
+ info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
+ info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
+ if (sdata->bss_conf.use_short_preamble &&
+ sband->bitrates[rsel.rate_idx].flags & IEEE80211_RATE_SHORT_PREAMBLE)
+ info->flags |= IEEE80211_TX_CTL_SHORT_PREAMBLE;
+
+ info->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+ info->control.retry_limit = 1;
- control->vif = vif;
- control->tx_rate = rsel.rate;
- if (sdata->bss_conf.use_short_preamble &&
- rsel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
- control->flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
- control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
- control->flags |= IEEE80211_TXCTL_NO_ACK;
- control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
- control->retry_limit = 1;
- control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT;
- }
(*num_beacons)++;
out:
rcu_read_unlock();
void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
const void *frame, size_t frame_len,
- const struct ieee80211_tx_control *frame_txctl,
+ const struct ieee80211_tx_info *frame_txctl,
struct ieee80211_rts *rts)
{
const struct ieee80211_hdr *hdr = frame;
- u16 fctl;
- fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS;
- rts->frame_control = cpu_to_le16(fctl);
+ rts->frame_control =
+ cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
rts->duration = ieee80211_rts_duration(hw, vif, frame_len,
frame_txctl);
memcpy(rts->ra, hdr->addr1, sizeof(rts->ra));
void ieee80211_ctstoself_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
const void *frame, size_t frame_len,
- const struct ieee80211_tx_control *frame_txctl,
+ const struct ieee80211_tx_info *frame_txctl,
struct ieee80211_cts *cts)
{
const struct ieee80211_hdr *hdr = frame;
- u16 fctl;
- fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS;
- cts->frame_control = cpu_to_le16(fctl);
+ cts->frame_control =
+ cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
cts->duration = ieee80211_ctstoself_duration(hw, vif,
frame_len, frame_txctl);
memcpy(cts->ra, hdr->addr1, sizeof(cts->ra));
struct sk_buff *
ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_tx_control *control)
+ struct ieee80211_vif *vif)
{
struct ieee80211_local *local = hw_to_local(hw);
- struct sk_buff *skb;
+ struct sk_buff *skb = NULL;
struct sta_info *sta;
- ieee80211_tx_handler *handler;
struct ieee80211_tx_data tx;
- ieee80211_tx_result res = TX_DROP;
struct net_device *bdev;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_ap *bss = NULL;
struct beacon_data *beacon;
+ struct ieee80211_tx_info *info;
sdata = vif_to_sdata(vif);
bdev = sdata->dev;
-
+ bss = &sdata->u.ap;
if (!bss)
return NULL;
rcu_read_lock();
beacon = rcu_dereference(bss->beacon);
- if (sdata->vif.type != IEEE80211_IF_TYPE_AP || !beacon ||
- !beacon->head) {
- rcu_read_unlock();
- return NULL;
- }
+ if (sdata->vif.type != IEEE80211_IF_TYPE_AP || !beacon || !beacon->head)
+ goto out;
if (bss->dtim_count != 0)
- return NULL; /* send buffered bc/mc only after DTIM beacon */
- memset(control, 0, sizeof(*control));
+ goto out; /* send buffered bc/mc only after DTIM beacon */
+
while (1) {
skb = skb_dequeue(&bss->ps_bc_buf);
if (!skb)
- return NULL;
+ goto out;
local->total_ps_buffered--;
if (!skb_queue_empty(&bss->ps_bc_buf) && skb->len >= 2) {
cpu_to_le16(IEEE80211_FCTL_MOREDATA);
}
- if (!ieee80211_tx_prepare(&tx, skb, local->mdev, control))
+ if (!ieee80211_tx_prepare(&tx, skb, local->mdev))
break;
dev_kfree_skb_any(skb);
}
+
+ info = IEEE80211_SKB_CB(skb);
+
sta = tx.sta;
tx.flags |= IEEE80211_TX_PS_BUFFERED;
tx.channel = local->hw.conf.channel;
+ info->band = tx.channel->band;
- for (handler = ieee80211_tx_handlers; *handler != NULL; handler++) {
- res = (*handler)(&tx);
- if (res == TX_DROP || res == TX_QUEUED)
- break;
- }
- skb = tx.skb; /* handlers are allowed to change skb */
-
- if (res == TX_DROP) {
- I802_DEBUG_INC(local->tx_handlers_drop);
- dev_kfree_skb(skb);
+ if (invoke_tx_handlers(&tx))
skb = NULL;
- } else if (res == TX_QUEUED) {
- I802_DEBUG_INC(local->tx_handlers_queued);
- skb = NULL;
- }
-
+ out:
rcu_read_unlock();
return skb;
git.openpandora.org / pandora-kernel.git / blobdiff