#define IEEE80211_TX_OK 0
#define IEEE80211_TX_AGAIN 1
-#define IEEE80211_TX_FRAG_AGAIN 2
+#define IEEE80211_TX_PENDING 2
/* 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;
- DECLARE_MAC_BUF(mac);
-
- printk(KERN_DEBUG "%s: %s (len=%d)", ifname, title, skb->len);
- if (skb->len < 4) {
- printk("\n");
- return;
- }
-
- fc = le16_to_cpu(hdr->frame_control);
- hdrlen = ieee80211_get_hdrlen(fc);
- if (hdrlen > skb->len)
- hdrlen = skb->len;
- if (hdrlen >= 4)
- printk(" FC=0x%04x DUR=0x%04x",
- fc, le16_to_cpu(hdr->duration_id));
- if (hdrlen >= 10)
- printk(" A1=%s", print_mac(mac, hdr->addr1));
- if (hdrlen >= 16)
- printk(" A2=%s", print_mac(mac, hdr->addr2));
- if (hdrlen >= 24)
- printk(" A3=%s", print_mac(mac, hdr->addr3));
- if (hdrlen >= 30)
- printk(" A4=%s", print_mac(mac, hdr->addr4));
- printk("\n");
-}
-#else /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */
-static inline void ieee80211_dump_frame(const char *ifname, const char *title,
- struct sk_buff *skb)
-{
-}
-#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;
struct ieee80211_local *local = tx->local;
struct ieee80211_supported_band *sband;
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+
+ /* assume HW handles this */
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
+ return 0;
+
+ /* uh huh? */
+ if (WARN_ON_ONCE(info->control.rates[0].idx < 0))
+ return 0;
sband = local->hw.wiphy->bands[tx->channel->band];
- txrate = &sband->bitrates[tx->rate_idx];
+ txrate = &sband->bitrates[info->control.rates[0].idx];
- erp = 0;
- if (tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
- erp = txrate->flags & IEEE80211_RATE_ERP_G;
+ erp = txrate->flags & IEEE80211_RATE_ERP_G;
/*
* data and mgmt (except PS Poll):
* at the highest possible rate belonging to the PHY rates in the
* BSSBasicRateSet
*/
-
- if ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) {
+ hdr = (struct ieee80211_hdr *)tx->skb->data;
+ if (ieee80211_is_ctl(hdr->frame_control)) {
/* TODO: These control frames are not currently sent by
- * 80211.o, but should they be implemented, this function
+ * mac80211, but should they be implemented, this function
* needs to be updated to support duration field calculation.
*
* RTS: time needed to transmit pending data/mgmt frame plus
/* 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;
if (r->bitrate > txrate->bitrate)
break;
- if (tx->sdata->basic_rates & BIT(i))
+ if (tx->sdata->vif.bss_conf.basic_rates & BIT(i))
rate = r->bitrate;
switch (sband->band) {
* to closest integer */
dur = ieee80211_frame_duration(local, 10, rate, erp,
- tx->sdata->bss_conf.use_short_preamble);
+ tx->sdata->vif.bss_conf.use_short_preamble);
if (next_frag_len) {
/* Frame is fragmented: duration increases with time needed to
/* next fragment */
dur += ieee80211_frame_duration(local, next_frag_len,
txrate->bitrate, erp,
- tx->sdata->bss_conf.use_short_preamble);
+ tx->sdata->vif.bss_conf.use_short_preamble);
}
- return dur;
+ return cpu_to_le16(dur);
}
-static int inline is_ieee80211_device(struct net_device *dev,
- struct net_device *master)
+static int inline is_ieee80211_device(struct ieee80211_local *local,
+ struct net_device *dev)
{
- return (wdev_priv(dev->ieee80211_ptr) ==
- wdev_priv(master->ieee80211_ptr));
+ return local == wdev_priv(dev->ieee80211_ptr);
}
/* 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 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(info->flags & IEEE80211_TX_CTL_INJECTED))
return TX_CONTINUE;
- if (unlikely(tx->local->sta_sw_scanning) &&
- ((tx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
- (tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ))
+ if (unlikely(tx->local->sw_scanning) &&
+ !ieee80211_is_probe_req(hdr->frame_control) &&
+ !ieee80211_is_nullfunc(hdr->frame_control))
+ /*
+ * When software scanning only nullfunc frames (to notify
+ * the sleep state to the AP) and probe requests (for the
+ * active scan) are allowed, all other frames should not be
+ * sent and we should not get here, but if we do
+ * nonetheless, drop them to avoid sending them
+ * off-channel. See the link below and
+ * ieee80211_start_scan() for more.
+ *
+ * http://article.gmane.org/gmane.linux.kernel.wireless.general/30089
+ */
return TX_DROP;
- if (tx->sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT)
+ if (tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
return TX_CONTINUE;
if (tx->flags & IEEE80211_TX_PS_BUFFERED)
if (likely(tx->flags & IEEE80211_TX_UNICAST)) {
if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
- tx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- (tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
+ tx->sdata->vif.type != NL80211_IFTYPE_ADHOC &&
+ ieee80211_is_data(hdr->frame_control))) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- DECLARE_MAC_BUF(mac);
printk(KERN_DEBUG "%s: dropped data frame to not "
- "associated station %s\n",
- tx->dev->name, print_mac(mac, hdr->addr1));
+ "associated station %pM\n",
+ tx->dev->name, hdr->addr1);
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc);
return TX_DROP;
}
} else {
- if (unlikely((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+ if (unlikely(ieee80211_is_data(hdr->frame_control) &&
tx->local->num_sta == 0 &&
- tx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS)) {
+ tx->sdata->vif.type != NL80211_IFTYPE_ADHOC)) {
/*
* No associated STAs - no need to send multicast
* frames.
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 != NL80211_IFTYPE_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);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
/*
* 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 (ieee80211_has_order(hdr->frame_control))
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++;
return TX_CONTINUE;
}
+static int ieee80211_use_mfp(__le16 fc, struct sta_info *sta,
+ struct sk_buff *skb)
+{
+ if (!ieee80211_is_mgmt(fc))
+ return 0;
+
+ if (sta == NULL || !test_sta_flags(sta, WLAN_STA_MFP))
+ return 0;
+
+ if (!ieee80211_is_robust_mgmt_frame((struct ieee80211_hdr *)
+ skb->data))
+ return 0;
+
+ return 1;
+}
+
static ieee80211_tx_result
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);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
u32 staflags;
- DECLARE_MAC_BUF(mac);
- if (unlikely(!sta ||
- ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
- (tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)))
+ if (unlikely(!sta || ieee80211_is_probe_resp(hdr->frame_control)))
return TX_CONTINUE;
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 "
+ printk(KERN_DEBUG "STA %pM aid %d: PS buffer (entries "
"before %d)\n",
- print_mac(mac, sta->addr), sta->aid,
+ sta->sta.addr, sta->sta.aid,
skb_queue_len(&sta->ps_tx_buf));
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
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 "
+ printk(KERN_DEBUG "%s: STA %pM TX "
"buffer full - dropping oldest frame\n",
- tx->dev->name, print_mac(mac, sta->addr));
+ tx->dev->name, sta->sta.addr);
}
+#endif
dev_kfree_skb(old);
} else
tx->local->total_ps_buffered++;
}
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
else if (unlikely(test_sta_flags(sta, WLAN_STA_PS))) {
- printk(KERN_DEBUG "%s: STA %s in PS mode, but pspoll "
+ printk(KERN_DEBUG "%s: STA %pM in PS mode, but pspoll "
"set -> send frame\n", tx->dev->name,
- print_mac(mac, sta->addr));
+ sta->sta.addr);
}
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
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;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
- if (unlikely(info->flags & IEEE80211_TX_CTL_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 (ieee80211_is_mgmt(hdr->frame_control) &&
+ (key = rcu_dereference(tx->sdata->default_mgmt_key)))
+ tx->key = key;
else if ((key = rcu_dereference(tx->sdata->default_key)))
tx->key = key;
else if (tx->sdata->drop_unencrypted &&
- !(info->flags & IEEE80211_TX_CTL_EAPOL_FRAME) &&
- !(info->flags & IEEE80211_TX_CTL_INJECTED)) {
+ (tx->skb->protocol != cpu_to_be16(ETH_P_PAE)) &&
+ !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
+ (!ieee80211_is_robust_mgmt_frame(hdr) ||
+ (ieee80211_is_action(hdr->frame_control) &&
+ tx->sta && test_sta_flags(tx->sta, WLAN_STA_MFP)))) {
I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
return TX_DROP;
} else
tx->key = NULL;
if (tx->key) {
- u16 ftype, stype;
-
tx->key->tx_rx_count++;
/* TODO: add threshold stuff again */
switch (tx->key->conf.alg) {
case ALG_WEP:
- ftype = fc & IEEE80211_FCTL_FTYPE;
- stype = fc & IEEE80211_FCTL_STYPE;
-
- if (ftype == IEEE80211_FTYPE_MGMT &&
- stype == IEEE80211_STYPE_AUTH)
+ if (ieee80211_is_auth(hdr->frame_control))
break;
case ALG_TKIP:
+ if (!ieee80211_is_data_present(hdr->frame_control))
+ tx->key = NULL;
+ break;
case ALG_CCMP:
- if (!WLAN_FC_DATA_PRESENT(fc))
+ if (!ieee80211_is_data_present(hdr->frame_control) &&
+ !ieee80211_use_mfp(hdr->frame_control, tx->sta,
+ tx->skb))
+ tx->key = NULL;
+ break;
+ case ALG_AES_CMAC:
+ if (!ieee80211_is_mgmt(hdr->frame_control))
tx->key = NULL;
break;
}
}
if (!tx->key || !(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
- info->flags |= IEEE80211_TX_CTL_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);
+ struct ieee80211_hdr *hdr = (void *)tx->skb->data;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *rate;
+ int i, len;
+ bool inval = false, rts = false, short_preamble = false;
+ struct ieee80211_tx_rate_control txrc;
+
+ memset(&txrc, 0, sizeof(txrc));
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;
+ len = min_t(int, tx->skb->len + FCS_LEN,
+ tx->local->fragmentation_threshold);
+
+ /* set up the tx rate control struct we give the RC algo */
+ txrc.hw = local_to_hw(tx->local);
+ txrc.sband = sband;
+ txrc.bss_conf = &tx->sdata->vif.bss_conf;
+ txrc.skb = tx->skb;
+ txrc.reported_rate.idx = -1;
+ txrc.max_rate_idx = tx->sdata->max_ratectrl_rateidx;
+
+ /* set up RTS protection if desired */
+ if (tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD &&
+ len > tx->local->rts_threshold) {
+ txrc.rts = rts = true;
+ }
- if (unlikely(tx->rate_idx < 0))
- return TX_DROP;
- } else
- info->control.alt_retry_rate_idx = -1;
+ /*
+ * Use short preamble if the BSS can handle it, but not for
+ * management frames unless we know the receiver can handle
+ * that -- the management frame might be to a station that
+ * just wants a probe response.
+ */
+ if (tx->sdata->vif.bss_conf.use_short_preamble &&
+ (ieee80211_is_data(hdr->frame_control) ||
+ (tx->sta && test_sta_flags(tx->sta, WLAN_STA_SHORT_PREAMBLE))))
+ txrc.short_preamble = short_preamble = true;
- 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;
+
+ rate_control_get_rate(tx->sdata, tx->sta, &txrc);
+
+ if (unlikely(info->control.rates[0].idx < 0))
+ return TX_DROP;
+
+ if (txrc.reported_rate.idx < 0)
+ txrc.reported_rate = info->control.rates[0];
+
+ if (tx->sta)
+ tx->sta->last_tx_rate = txrc.reported_rate;
+
+ if (unlikely(!info->control.rates[0].count))
+ 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;
}
- info->tx_rate_idx = tx->rate_idx;
return TX_CONTINUE;
}
-static ieee80211_tx_result
+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;
- u16 fc = le16_to_cpu(hdr->frame_control);
- u16 dur;
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;
- }
- }
+ info->control.sta = &tx->sta->sta;
- 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;
- }
+ return TX_CONTINUE;
+}
- /* 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 (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
- (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;
- }
+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;
+
+ /*
+ * Packet injection may want to control the sequence
+ * number, if we have no matching interface then we
+ * neither assign one ourselves nor ask the driver to.
+ */
+ if (unlikely(!info->control.vif))
+ return TX_CONTINUE;
- /* 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 (unlikely(ieee80211_is_ctl(hdr->frame_control)))
+ return TX_CONTINUE;
- if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
- (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
- struct ieee80211_supported_band *sband;
- struct ieee80211_rate *rate;
- s8 baserate = -1;
- int idx;
+ if (ieee80211_hdrlen(hdr->frame_control) < 24)
+ return TX_CONTINUE;
- sband = tx->local->hw.wiphy->bands[tx->channel->band];
+ /*
+ * Anything but QoS data that has a sequence number field
+ * (is long enough) gets a sequence number from the global
+ * counter.
+ */
+ if (!ieee80211_is_data_qos(hdr->frame_control)) {
+ /* driver should assign sequence number */
+ info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
+ /* for pure STA mode without beacons, we can do it */
+ hdr->seq_ctrl = cpu_to_le16(tx->sdata->sequence_number);
+ tx->sdata->sequence_number += 0x10;
+ tx->sdata->sequence_number &= IEEE80211_SCTL_SEQ;
+ return TX_CONTINUE;
+ }
- /* Do not use multiple retry rates when using RTS/CTS */
- info->control.alt_retry_rate_idx = -1;
+ /*
+ * 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;
- /* Use min(data rate, max base rate) as CTS/RTS rate */
- rate = &sband->bitrates[tx->rate_idx];
+ /* include per-STA, per-TID sequence counter */
- 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;
- }
+ qc = ieee80211_get_qos_ctl(hdr);
+ tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
+ seq = &tx->sta->tid_seq[tid];
- if (baserate >= 0)
- info->control.rts_cts_rate_idx = baserate;
- else
- info->control.rts_cts_rate_idx = 0;
- }
+ hdr->seq_ctrl = cpu_to_le16(*seq);
- if (tx->sta)
- info->control.aid = tx->sta->aid;
+ /* Increase the sequence number. */
+ *seq = (*seq + 0x10) & IEEE80211_SCTL_SEQ;
return TX_CONTINUE;
}
-static ieee80211_tx_result
+static int ieee80211_fragment(struct ieee80211_local *local,
+ struct sk_buff *skb, int hdrlen,
+ int frag_threshold)
+{
+ struct sk_buff *tail = skb, *tmp;
+ int per_fragm = frag_threshold - hdrlen - FCS_LEN;
+ int pos = hdrlen + per_fragm;
+ int rem = skb->len - hdrlen - per_fragm;
+
+ if (WARN_ON(rem < 0))
+ return -EINVAL;
+
+ while (rem) {
+ int fraglen = per_fragm;
+
+ if (fraglen > rem)
+ fraglen = rem;
+ rem -= fraglen;
+ tmp = dev_alloc_skb(local->tx_headroom +
+ frag_threshold +
+ IEEE80211_ENCRYPT_HEADROOM +
+ IEEE80211_ENCRYPT_TAILROOM);
+ if (!tmp)
+ return -ENOMEM;
+ tail->next = tmp;
+ tail = tmp;
+ skb_reserve(tmp, local->tx_headroom +
+ IEEE80211_ENCRYPT_HEADROOM);
+ /* copy control information */
+ memcpy(tmp->cb, skb->cb, sizeof(tmp->cb));
+ skb_copy_queue_mapping(tmp, skb);
+ tmp->priority = skb->priority;
+ tmp->do_not_encrypt = skb->do_not_encrypt;
+ tmp->dev = skb->dev;
+ tmp->iif = skb->iif;
+
+ /* copy header and data */
+ memcpy(skb_put(tmp, hdrlen), skb->data, hdrlen);
+ memcpy(skb_put(tmp, fraglen), skb->data + pos, fraglen);
+
+ pos += fraglen;
+ }
+
+ skb->len = hdrlen + per_fragm;
+ return 0;
+}
+
+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;
- size_t hdrlen, per_fragm, num_fragm, payload_len, left;
- struct sk_buff **frags, *first, *frag;
- int i;
- u16 seq;
- u8 *pos;
+ struct sk_buff *skb = tx->skb;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr = (void *)skb->data;
int frag_threshold = tx->local->fragmentation_threshold;
+ int hdrlen;
+ int fragnum;
if (!(tx->flags & IEEE80211_TX_FRAGMENTED))
return TX_CONTINUE;
/*
* Warn when submitting a fragmented A-MPDU frame and drop it.
- * This is an error and needs to be fixed elsewhere, but when
- * done needs to take care of monitor interfaces (injection)
- * etc.
+ * 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)))
+ if (WARN_ON(info->flags & IEEE80211_TX_CTL_AMPDU))
return TX_DROP;
- first = tx->skb;
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
- hdrlen = ieee80211_get_hdrlen(tx->fc);
- payload_len = first->len - hdrlen;
- per_fragm = frag_threshold - hdrlen - FCS_LEN;
- num_fragm = DIV_ROUND_UP(payload_len, per_fragm);
-
- frags = kzalloc(num_fragm * sizeof(struct sk_buff *), GFP_ATOMIC);
- if (!frags)
- goto fail;
+ /* internal error, why is TX_FRAGMENTED set? */
+ if (WARN_ON(skb->len <= frag_threshold))
+ return TX_DROP;
- hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
- seq = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ;
- pos = first->data + hdrlen + per_fragm;
- left = payload_len - per_fragm;
- for (i = 0; i < num_fragm - 1; i++) {
- struct ieee80211_hdr *fhdr;
- size_t copylen;
+ /*
+ * Now fragment the frame. This will allocate all the fragments and
+ * chain them (using skb as the first fragment) to skb->next.
+ * During transmission, we will remove the successfully transmitted
+ * fragments from this list. When the low-level driver rejects one
+ * of the fragments then we will simply pretend to accept the skb
+ * but store it away as pending.
+ */
+ if (ieee80211_fragment(tx->local, skb, hdrlen, frag_threshold))
+ return TX_DROP;
- if (left <= 0)
- goto fail;
+ /* update duration/seq/flags of fragments */
+ fragnum = 0;
+ do {
+ int next_len;
+ const __le16 morefrags = cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
- /* reserve enough extra head and tail room for possible
- * encryption */
- frag = frags[i] =
- dev_alloc_skb(tx->local->tx_headroom +
- frag_threshold +
- IEEE80211_ENCRYPT_HEADROOM +
- IEEE80211_ENCRYPT_TAILROOM);
- if (!frag)
- goto fail;
- /* Make sure that all fragments use the same priority so
- * that they end up using the same TX queue */
- frag->priority = first->priority;
- skb_reserve(frag, tx->local->tx_headroom +
- IEEE80211_ENCRYPT_HEADROOM);
- fhdr = (struct ieee80211_hdr *) skb_put(frag, hdrlen);
- memcpy(fhdr, first->data, hdrlen);
- if (i == num_fragm - 2)
- fhdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREFRAGS);
- 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);
-
- pos += copylen;
- left -= copylen;
- }
- skb_trim(first, hdrlen + per_fragm);
+ hdr = (void *)skb->data;
+ info = IEEE80211_SKB_CB(skb);
- tx->num_extra_frag = num_fragm - 1;
- tx->extra_frag = frags;
+ if (skb->next) {
+ hdr->frame_control |= morefrags;
+ next_len = skb->next->len;
+ /*
+ * No multi-rate retries for fragmented frames, that
+ * would completely throw off the NAV at other STAs.
+ */
+ 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);
+ info->flags &= ~IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ } else {
+ hdr->frame_control &= ~morefrags;
+ next_len = 0;
+ }
+ hdr->duration_id = ieee80211_duration(tx, 0, next_len);
+ hdr->seq_ctrl |= cpu_to_le16(fragnum & IEEE80211_SCTL_FRAG);
+ fragnum++;
+ } while ((skb = skb->next));
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])
- dev_kfree_skb(frags[i]);
- kfree(frags);
- }
- I802_DEBUG_INC(tx->local->tx_handlers_drop_fragment);
- 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 ieee80211_crypto_tkip_encrypt(tx);
case ALG_CCMP:
return ieee80211_crypto_ccmp_encrypt(tx);
+ case ALG_AES_CMAC:
+ return ieee80211_crypto_aes_cmac_encrypt(tx);
}
/* not reached */
return TX_DROP;
}
-static ieee80211_tx_result
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx)
+{
+ struct sk_buff *skb = tx->skb;
+ struct ieee80211_hdr *hdr;
+ int next_len;
+ bool group_addr;
+
+ do {
+ hdr = (void *) skb->data;
+ next_len = skb->next ? skb->next->len : 0;
+ group_addr = is_multicast_ether_addr(hdr->addr1);
+
+ hdr->duration_id =
+ ieee80211_duration(tx, group_addr, next_len);
+ } while ((skb = skb->next));
+
+ return TX_CONTINUE;
+}
+
+static ieee80211_tx_result debug_noinline
ieee80211_tx_h_stats(struct ieee80211_tx_data *tx)
{
- int i;
+ struct sk_buff *skb = tx->skb;
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) {
- 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;
- }
+ do {
+ tx->sta->tx_fragments++;
+ tx->sta->tx_bytes += skb->len;
+ } while ((skb = skb->next));
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_rate_ctrl,
- ieee80211_tx_h_misc,
- ieee80211_tx_h_fragment,
- /* handlers after fragment must be aware of tx info fragmentation! */
- ieee80211_tx_h_encrypt,
- ieee80211_tx_h_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_info *info = IEEE80211_SKB_CB(skb);
sband = tx->local->hw.wiphy->bands[tx->channel->band];
- info->flags |= IEEE80211_TX_CTL_DO_NOT_ENCRYPT;
- info->flags |= IEEE80211_TX_CTL_INJECTED;
+ skb->do_not_encrypt = 1;
tx->flags &= ~IEEE80211_TX_FRAGMENTED;
/*
*/
while (!ret) {
- int i, target_rate;
-
ret = ieee80211_radiotap_iterator_next(&iterator);
if (ret)
* get_unaligned((type *)iterator.this_arg) to dereference
* iterator.this_arg for type "type" safely on all arches.
*/
- case IEEE80211_RADIOTAP_RATE:
- /*
- * radiotap rate u8 is in 500kbps units eg, 0x02=1Mbps
- * ieee80211 rate int is in 100kbps units eg, 0x0a=1Mbps
- */
- target_rate = (*iterator.this_arg) * 5;
- for (i = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *r;
-
- r = &sband->bitrates[i];
-
- if (r->bitrate == target_rate) {
- tx->rate_idx = i;
- break;
- }
- }
- break;
-
- case IEEE80211_RADIOTAP_ANTENNA:
- /*
- * radiotap uses 0 for 1st ant, mac80211 is 1 for
- * 1st ant
- */
- info->antenna_sel_tx = (*iterator.this_arg) + 1;
- break;
-
-#if 0
- case IEEE80211_RADIOTAP_DBM_TX_POWER:
- control->power_level = *iterator.this_arg;
- break;
-#endif
-
case IEEE80211_RADIOTAP_FLAGS:
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FCS) {
/*
skb_trim(skb, skb->len - FCS_LEN);
}
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_WEP)
- info->flags &=
- ~IEEE80211_TX_CTL_DO_NOT_ENCRYPT;
+ tx->skb->do_not_encrypt = 0;
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG)
tx->flags |= IEEE80211_TX_FRAGMENTED;
break;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- int hdrlen;
+ int hdrlen, tid;
+ u8 *qc, *state;
memset(tx, 0, sizeof(*tx));
tx->skb = skb;
tx->local = local;
tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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.
/* process and remove the injection radiotap header */
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (unlikely(sdata->vif.type == IEEE80211_IF_TYPE_MNTR)) {
+ if (unlikely(info->flags & IEEE80211_TX_CTL_INJECTED)) {
if (__ieee80211_parse_tx_radiotap(tx, skb) == TX_DROP)
return TX_DROP;
hdr = (struct ieee80211_hdr *) skb->data;
tx->sta = sta_info_get(local, hdr->addr1);
- tx->fc = le16_to_cpu(hdr->frame_control);
+
+ if (tx->sta && ieee80211_is_data_qos(hdr->frame_control)) {
+ unsigned long flags;
+ qc = ieee80211_get_qos_ctl(hdr);
+ tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
+
+ spin_lock_irqsave(&tx->sta->lock, flags);
+ state = &tx->sta->ampdu_mlme.tid_state_tx[tid];
+ if (*state == HT_AGG_STATE_OPERATIONAL)
+ info->flags |= IEEE80211_TX_CTL_AMPDU;
+ spin_unlock_irqrestore(&tx->sta->lock, flags);
+ }
if (is_multicast_ether_addr(hdr->addr1)) {
tx->flags &= ~IEEE80211_TX_UNICAST;
if (tx->flags & IEEE80211_TX_FRAGMENTED) {
if ((tx->flags & IEEE80211_TX_UNICAST) &&
skb->len + FCS_LEN > local->fragmentation_threshold &&
- !local->ops->set_frag_threshold)
+ !(info->flags & IEEE80211_TX_CTL_AMPDU))
tx->flags |= IEEE80211_TX_FRAGMENTED;
else
tx->flags &= ~IEEE80211_TX_FRAGMENTED;
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);
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (skb->len > hdrlen + sizeof(rfc1042_header) + 2) {
u8 *pos = &skb->data[hdrlen + sizeof(rfc1042_header)];
tx->ethertype = (pos[0] << 8) | pos[1];
/*
* NB: @tx is uninitialised when passed in here
*/
-static int ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
- struct sk_buff *skb,
- struct net_device *mdev)
+static int ieee80211_tx_prepare(struct ieee80211_local *local,
+ struct ieee80211_tx_data *tx,
+ struct sk_buff *skb)
{
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct net_device *dev;
- dev = dev_get_by_index(&init_net, info->control.ifindex);
- if (unlikely(dev && !is_ieee80211_device(dev, mdev))) {
+ dev = dev_get_by_index(&init_net, skb->iif);
+ if (unlikely(dev && !is_ieee80211_device(local, dev))) {
dev_put(dev);
dev = NULL;
}
return 0;
}
-static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
- struct ieee80211_tx_data *tx)
+static int __ieee80211_tx(struct ieee80211_local *local,
+ struct sk_buff **skbp,
+ struct sta_info *sta)
{
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- int ret, i;
+ struct sk_buff *skb = *skbp, *next;
+ struct ieee80211_tx_info *info;
+ int ret, len;
+ bool fragm = false;
+
+ local->mdev->trans_start = jiffies;
- if (netif_subqueue_stopped(local->mdev, skb))
- return IEEE80211_TX_AGAIN;
+ while (skb) {
+ if (ieee80211_queue_stopped(&local->hw,
+ skb_get_queue_mapping(skb)))
+ return IEEE80211_TX_PENDING;
+
+ info = IEEE80211_SKB_CB(skb);
+
+ if (fragm)
+ info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |
+ IEEE80211_TX_CTL_FIRST_FRAGMENT);
- if (skb) {
- ieee80211_dump_frame(wiphy_name(local->hw.wiphy),
- "TX to low-level driver", skb);
+ /*
+ * Internally, we need to have the queue mapping point to
+ * the real AC queue, not the virtual A-MPDU queue. This
+ * now finally sets the queue to what the driver wants.
+ * We will later move this down into the only driver that
+ * needs it, iwlwifi.
+ */
+ if (sta && local->hw.ampdu_queues &&
+ info->flags & IEEE80211_TX_CTL_AMPDU) {
+ unsigned long flags;
+ u8 *qc = ieee80211_get_qos_ctl((void *) skb->data);
+ int tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
+
+ spin_lock_irqsave(&sta->lock, flags);
+ skb_set_queue_mapping(skb, local->hw.queues +
+ sta->tid_to_tx_q[tid]);
+ spin_unlock_irqrestore(&sta->lock, flags);
+ }
+
+ next = skb->next;
+ len = skb->len;
ret = local->ops->tx(local_to_hw(local), skb);
- if (ret)
+ if (WARN_ON(ret != NETDEV_TX_OK && skb->len != len)) {
+ dev_kfree_skb(skb);
+ ret = NETDEV_TX_OK;
+ }
+ if (ret != NETDEV_TX_OK)
return IEEE80211_TX_AGAIN;
- local->mdev->trans_start = jiffies;
+ *skbp = skb = next;
ieee80211_led_tx(local, 1);
+ fragm = true;
}
- if (tx->extra_frag) {
- for (i = 0; i < tx->num_extra_frag; i++) {
- if (!tx->extra_frag[i])
- continue;
- 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) {
- info->tx_rate_idx = tx->last_frag_rate_idx;
-
- if (tx->flags & IEEE80211_TX_PROBE_LAST_FRAG)
- info->flags |=
- IEEE80211_TX_CTL_RATE_CTRL_PROBE;
- else
- 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]);
- if (ret)
- return IEEE80211_TX_FRAG_AGAIN;
- local->mdev->trans_start = jiffies;
- ieee80211_led_tx(local, 1);
- tx->extra_frag[i] = NULL;
+ return IEEE80211_TX_OK;
+}
+
+/*
+ * 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;
+
+#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);
+ while (skb) {
+ struct sk_buff *next;
+
+ next = skb->next;
+ dev_kfree_skb(skb);
+ skb = next;
}
- kfree(tx->extra_frag);
- tx->extra_frag = NULL;
+ return -1;
+ } else if (unlikely(res == TX_QUEUED)) {
+ I802_DEBUG_INC(tx->local->tx_handlers_queued);
+ return -1;
}
- return IEEE80211_TX_OK;
+
+ 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;
+ ieee80211_tx_result res_prepare;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- int ret, i;
+ struct sk_buff *next;
+ unsigned long flags;
+ int ret, retries;
u16 queue;
queue = skb_get_queue_mapping(skb);
- WARN_ON(test_bit(queue, local->queues_pending));
+ WARN_ON(!skb_queue_empty(&local->pending[queue]));
if (unlikely(skb->len < 10)) {
dev_kfree_skb(skb);
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;
- }
-
- if (WARN_ON(tx.skb != skb))
- goto drop;
-
- 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_idx = tx.last_frag_rate_idx;
- }
- dur = ieee80211_duration(&tx, 0, next_len);
- hdr->duration_id = cpu_to_le16(dur);
- }
- }
-
-retry:
- ret = __ieee80211_tx(local, skb, &tx);
- if (ret) {
- struct ieee80211_tx_stored_packet *store;
+ if (invoke_tx_handlers(&tx))
+ goto out;
+ retries = 0;
+ retry:
+ ret = __ieee80211_tx(local, &tx.skb, tx.sta);
+ switch (ret) {
+ case IEEE80211_TX_OK:
+ break;
+ case IEEE80211_TX_AGAIN:
/*
* 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)))
+ if (WARN_ON(info->flags & IEEE80211_TX_CTL_AMPDU))
goto drop;
+ /* fall through */
+ case IEEE80211_TX_PENDING:
+ skb = tx.skb;
- store = &local->pending_packet[queue];
+ spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
- if (ret == IEEE80211_TX_FRAG_AGAIN)
- skb = NULL;
- set_bit(queue, local->queues_pending);
- smp_mb();
- /*
- * 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 the PENDING bit still set. Prevent this by
- * continuing transmitting here when that situation is
- * possible to have happened.
- */
- if (!__netif_subqueue_stopped(local->mdev, queue)) {
- clear_bit(queue, local->queues_pending);
+ if (__netif_subqueue_stopped(local->mdev, queue)) {
+ do {
+ next = skb->next;
+ skb->next = NULL;
+ skb_queue_tail(&local->pending[queue], skb);
+ } while ((skb = next));
+
+ /*
+ * Make sure nobody will enable the queue on us
+ * (without going through the tasklet) nor disable the
+ * netdev queue underneath the pending handling code.
+ */
+ __set_bit(IEEE80211_QUEUE_STOP_REASON_PENDING,
+ &local->queue_stop_reasons[queue]);
+
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock,
+ flags);
+ } else {
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock,
+ flags);
+
+ retries++;
+ if (WARN(retries > 10, "tx refused but queue active"))
+ goto drop;
goto retry;
}
- store->skb = skb;
- store->extra_frag = tx.extra_frag;
- store->num_extra_frag = tx.num_extra_frag;
- 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;
drop:
- if (skb)
- 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);
rcu_read_unlock();
+
+ skb = tx.skb;
+ while (skb) {
+ next = skb->next;
+ dev_kfree_skb(skb);
+ skb = next;
+ }
return 0;
}
return 0;
}
-int ieee80211_master_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
+int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
+ struct ieee80211_master_priv *mpriv = netdev_priv(dev);
+ struct ieee80211_local *local = mpriv->local;
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;
+ enum {
+ NOT_MONITOR,
+ FOUND_SDATA,
+ UNKNOWN_ADDRESS,
+ } monitor_iface = NOT_MONITOR;
int ret;
- if (info->control.ifindex)
- odev = dev_get_by_index(&init_net, info->control.ifindex);
- if (unlikely(odev && !is_ieee80211_device(odev, dev))) {
+ if (skb->iif)
+ odev = dev_get_by_index(&init_net, skb->iif);
+ if (unlikely(odev && !is_ieee80211_device(local, odev))) {
dev_put(odev);
odev = NULL;
}
return 0;
}
+ if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
+ local->hw.conf.dynamic_ps_timeout > 0) {
+ if (local->hw.conf.flags & IEEE80211_CONF_PS) {
+ ieee80211_stop_queues_by_reason(&local->hw,
+ IEEE80211_QUEUE_STOP_REASON_PS);
+ queue_work(local->hw.workqueue,
+ &local->dynamic_ps_disable_work);
+ }
+
+ mod_timer(&local->dynamic_ps_timer, jiffies +
+ msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout));
+ }
+
+ memset(info, 0, sizeof(*info));
+
+ info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+
osdata = IEEE80211_DEV_TO_SUB_IF(odev);
- may_encrypt = !(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT);
+ if (ieee80211_vif_is_mesh(&osdata->vif) &&
+ 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, osdata)) {
+ dev_put(odev);
+ return 0;
+ }
+ if (memcmp(odev->dev_addr, hdr->addr4, ETH_ALEN) != 0)
+ IEEE80211_IFSTA_MESH_CTR_INC(&osdata->u.mesh,
+ fwded_frames);
+ } else if (unlikely(osdata->vif.type == NL80211_IFTYPE_MONITOR)) {
+ struct ieee80211_sub_if_data *sdata;
+ int hdrlen;
+ u16 len_rthdr;
+
+ info->flags |= IEEE80211_TX_CTL_INJECTED;
+ monitor_iface = UNKNOWN_ADDRESS;
+
+ len_rthdr = ieee80211_get_radiotap_len(skb->data);
+ hdr = (struct ieee80211_hdr *)skb->data + len_rthdr;
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
+
+ /* check the header is complete in the frame */
+ if (likely(skb->len >= len_rthdr + hdrlen)) {
+ /*
+ * We process outgoing injected frames that have a
+ * local address we handle as though they are our
+ * own frames.
+ * This code here isn't entirely correct, the local
+ * MAC address is not necessarily enough to find
+ * the interface to use; for that proper VLAN/WDS
+ * support we will need a different mechanism.
+ */
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces,
+ list) {
+ if (!netif_running(sdata->dev))
+ continue;
+ if (sdata->vif.type != NL80211_IFTYPE_AP)
+ continue;
+ if (compare_ether_addr(sdata->dev->dev_addr,
+ hdr->addr2)) {
+ dev_hold(sdata->dev);
+ dev_put(odev);
+ osdata = sdata;
+ odev = osdata->dev;
+ skb->iif = sdata->dev->ifindex;
+ monitor_iface = FOUND_SDATA;
+ break;
+ }
+ }
+ rcu_read_unlock();
+ }
+ }
+
+ may_encrypt = !skb->do_not_encrypt;
headroom = osdata->local->tx_headroom;
if (may_encrypt)
return 0;
}
- info->control.vif = &osdata->vif;
+ if (osdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ osdata = container_of(osdata->bss,
+ struct ieee80211_sub_if_data,
+ u.ap);
+ if (likely(monitor_iface != UNKNOWN_ADDRESS))
+ info->control.vif = &osdata->vif;
ret = ieee80211_tx(odev, skb);
dev_put(odev);
struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_channel *chan = local->hw.conf.channel;
struct ieee80211_radiotap_header *prthdr =
(struct ieee80211_radiotap_header *)skb->data;
u16 len_rthdr;
+ /*
+ * 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 */
skb->dev = local->mdev;
/* needed because we set skb device to master */
- info->control.ifindex = dev->ifindex;
+ skb->iif = dev->ifindex;
- info->flags |= IEEE80211_TX_CTL_DO_NOT_ENCRYPT;
- /* Interfaces should always request a status report */
- info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+ /* 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
int ieee80211_subif_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_info *info;
- struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
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;
struct sta_info *sta;
u32 sta_flags = 0;
- 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;
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_AP_VLAN:
+ 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);
memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN);
hdrlen = 24;
break;
- case IEEE80211_IF_TYPE_WDS:
- fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
+ case NL80211_IFTYPE_WDS:
+ 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);
hdrlen = 30;
break;
#ifdef CONFIG_MAC80211_MESH
- case IEEE80211_IF_TYPE_MESH_POINT:
- fc |= 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;
- 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++;
+ case NL80211_IFTYPE_MESH_POINT:
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
+ if (!sdata->u.mesh.mshcfg.dot11MeshTTL) {
+ /* Do not send frames with mesh_ttl == 0 */
+ sdata->u.mesh.mshstats.dropped_frames_ttl++;
+ ret = 0;
+ goto fail;
+ }
+ memset(&mesh_hdr, 0, sizeof(mesh_hdr));
+
+ if (compare_ether_addr(dev->dev_addr,
+ skb->data + ETH_ALEN) == 0) {
+ /* RA TA DA SA */
+ 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);
+ meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr, sdata);
} 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;
+ /* packet from other interface */
+ struct mesh_path *mppath;
+
+ memset(hdr.addr1, 0, ETH_ALEN);
+ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+ memcpy(hdr.addr4, dev->dev_addr, ETH_ALEN);
+
+ if (is_multicast_ether_addr(skb->data))
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ else {
+ rcu_read_lock();
+ mppath = mpp_path_lookup(skb->data, sdata);
+ if (mppath)
+ memcpy(hdr.addr3, mppath->mpp, ETH_ALEN);
+ else
+ memset(hdr.addr3, 0xff, ETH_ALEN);
+ rcu_read_unlock();
}
- meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr,
- sdata);
+
+ mesh_hdr.flags |= MESH_FLAGS_AE_A5_A6;
+ mesh_hdr.ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
+ put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &mesh_hdr.seqnum);
+ memcpy(mesh_hdr.eaddr1, skb->data, ETH_ALEN);
+ memcpy(mesh_hdr.eaddr2, skb->data + ETH_ALEN, ETH_ALEN);
+ sdata->u.mesh.mesh_seqnum++;
+ meshhdrlen = 18;
}
hdrlen = 30;
break;
#endif
- case IEEE80211_IF_TYPE_STA:
- fc |= IEEE80211_FCTL_TODS;
+ case NL80211_IFTYPE_STATION:
+ fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
/* BSSID SA DA */
- memcpy(hdr.addr1, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN);
memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
memcpy(hdr.addr3, skb->data, ETH_ALEN);
hdrlen = 24;
break;
- case IEEE80211_IF_TYPE_IBSS:
+ case NL80211_IFTYPE_ADHOC:
/* DA SA BSSID */
memcpy(hdr.addr1, skb->data, ETH_ALEN);
memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
- memcpy(hdr.addr3, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(hdr.addr3, sdata->u.ibss.bssid, ETH_ALEN);
hdrlen = 24;
break;
default:
}
/* 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 |= IEEE80211_STYPE_QOS_DATA;
+ if ((sta_flags & WLAN_STA_WME) && local->hw.queues >= 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,
skb->data + ETH_ALEN) == 0))) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- DECLARE_MAC_BUF(mac);
-
if (net_ratelimit())
- printk(KERN_DEBUG "%s: dropped frame to %s"
+ printk(KERN_DEBUG "%s: dropped frame to %pM"
" (unauthorized port)\n", dev->name,
- print_mac(mac, hdr.addr1));
+ hdr.addr1);
#endif
I802_DEBUG_INC(local->tx_handlers_drop_unauth_port);
goto fail;
}
- hdr.frame_control = cpu_to_le16(fc);
+ hdr.frame_control = fc;
hdr.duration_id = 0;
hdr.seq_ctrl = 0;
nh_pos -= skip_header_bytes;
h_pos -= skip_header_bytes;
- /* TODO: implement support for fragments so that there is no need to
- * reallocate and copy payload; it might be enough to support one
- * extra fragment that would be copied in the beginning of the frame
- * data.. anyway, it would be nice to include this into skb structure
- * somehow
- *
- * There are few options for this:
- * use skb->cb as an extra space for 802.11 header
- * allocate new buffer if not enough headroom
- * make sure that there is enough headroom in every skb by increasing
- * build in headroom in __dev_alloc_skb() (linux/skbuff.h) and
- * alloc_skb() (net/core/skbuff.c)
- */
head_need = hdrlen + encaps_len + meshhdrlen - skb_headroom(skb);
/*
* make it big enough for everything we may ever need.
*/
- if (head_need > 0 || skb_header_cloned(skb)) {
+ if (head_need > 0 || skb_cloned(skb)) {
head_need += IEEE80211_ENCRYPT_HEADROOM;
head_need += local->tx_headroom;
head_need = max_t(int, 0, head_need);
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;
- info = IEEE80211_SKB_CB(skb);
- memset(info, 0, sizeof(*info));
- info->control.ifindex = dev->ifindex;
- if (ethertype == ETH_P_PAE)
- info->flags |= IEEE80211_TX_CTL_EAPOL_FRAME;
-
- /* Interfaces should always request a status report */
- info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+ skb->iif = dev->ifindex;
skb->dev = local->mdev;
dev->stats.tx_packets++;
*/
void ieee80211_clear_tx_pending(struct ieee80211_local *local)
{
- int i, j;
- struct ieee80211_tx_stored_packet *store;
+ int 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(i, local->queues_pending);
- }
+ for (i = 0; i < local->hw.queues; i++)
+ skb_queue_purge(&local->pending[i]);
}
/*
{
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;
+ struct ieee80211_hdr *hdr;
+ unsigned long flags;
int i, ret;
+ bool next;
+ rcu_read_lock();
netif_tx_lock_bh(dev);
- for (i = 0; i < ieee80211_num_regular_queues(&local->hw); i++) {
- /* Check that this queue is ok */
- if (__netif_subqueue_stopped(local->mdev, i))
- continue;
- if (!test_bit(i, local->queues_pending)) {
- ieee80211_wake_queue(&local->hw, i);
+ for (i = 0; i < local->hw.queues; i++) {
+ /*
+ * If queue is stopped by something other than due to pending
+ * frames, or we have no pending frames, proceed to next queue.
+ */
+ spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+ next = false;
+ if (local->queue_stop_reasons[i] !=
+ BIT(IEEE80211_QUEUE_STOP_REASON_PENDING) ||
+ skb_queue_empty(&local->pending[i]))
+ next = true;
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+
+ if (next)
continue;
- }
- store = &local->pending_packet[i];
- tx.extra_frag = store->extra_frag;
- tx.num_extra_frag = store->num_extra_frag;
- 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;
- ret = __ieee80211_tx(local, store->skb, &tx);
- if (ret) {
- if (ret == IEEE80211_TX_FRAG_AGAIN)
- store->skb = NULL;
- } else {
- clear_bit(i, local->queues_pending);
- ieee80211_wake_queue(&local->hw, i);
+ /*
+ * start the queue now to allow processing our packets,
+ * we're under the tx lock here anyway so nothing will
+ * happen as a result of this
+ */
+ netif_start_subqueue(local->mdev, i);
+
+ while (!skb_queue_empty(&local->pending[i])) {
+ struct sk_buff *skb = skb_dequeue(&local->pending[i]);
+ struct sta_info *sta;
+
+ hdr = (struct ieee80211_hdr *)skb->data;
+ sta = sta_info_get(local, hdr->addr1);
+
+ ret = __ieee80211_tx(local, &skb, sta);
+ if (ret != IEEE80211_TX_OK) {
+ skb_queue_head(&local->pending[i], skb);
+ break;
+ }
}
+
+ /* Start regular packet processing again. */
+ if (skb_queue_empty(&local->pending[i]))
+ ieee80211_wake_queue_by_reason(&local->hw, i,
+ IEEE80211_QUEUE_STOP_REASON_PENDING);
}
+
netif_tx_unlock_bh(dev);
+ rcu_read_unlock();
}
/* functions for drivers to get certain frames */
-static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
- struct ieee80211_if_ap *bss,
+static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
struct sk_buff *skb,
struct beacon_data *beacon)
{
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 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[band];
rcu_read_lock();
sdata = vif_to_sdata(vif);
- bdev = sdata->dev;
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ if (sdata->vif.type == NL80211_IFTYPE_AP) {
ap = &sdata->u.ap;
beacon = rcu_dereference(ap->beacon);
if (ap && beacon) {
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()
* of the tim bitmap in mac80211 and the driver.
*/
if (local->tim_in_locked_section) {
- ieee80211_beacon_add_tim(local, ap, skb, beacon);
+ ieee80211_beacon_add_tim(ap, skb, beacon);
} else {
unsigned long flags;
spin_lock_irqsave(&local->sta_lock, flags);
- ieee80211_beacon_add_tim(local, ap, skb, beacon);
+ ieee80211_beacon_add_tim(ap, skb, beacon);
spin_unlock_irqrestore(&local->sta_lock, flags);
}
if (beacon->tail)
memcpy(skb_put(skb, beacon->tail_len),
beacon->tail, beacon->tail_len);
+ } else
+ goto out;
+ } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ struct ieee80211_hdr *hdr;
- num_beacons = &ap->num_beacons;
+ if (!ifibss->probe_resp)
+ goto out;
+
+ skb = skb_copy(ifibss->probe_resp, GFP_ATOMIC);
+ if (!skb)
+ goto out;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_BEACON);
- err = false;
- }
} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos;
+
/* headroom, head length, tail length and maximum TIM length */
skb = dev_alloc_skb(local->tx_headroom + 400);
if (!skb)
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 */
*pos++ = WLAN_EID_SSID;
*pos++ = 0x0;
- mesh_mgmt_ies_add(skb, sdata->dev);
-
- num_beacons = &sdata->u.sta.num_beacons;
-
- err = false;
- }
-
- 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 */
- skb = NULL;
+ mesh_mgmt_ies_add(skb, sdata);
+ } else {
+ WARN_ON(1);
goto out;
}
info = IEEE80211_SKB_CB(skb);
- info->band = band;
- rate_control_get_rate(local->mdev, sband, skb, &rsel);
+ skb->do_not_encrypt = 1;
- 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(skb);
- skb = NULL;
- goto out;
- }
+ info->band = band;
+ /*
+ * XXX: For now, always use the lowest rate
+ */
+ info->control.rates[0].idx = 0;
+ info->control.rates[0].count = 1;
+ 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);
info->control.vif = vif;
- info->tx_rate_idx = rsel.rate_idx;
- 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->flags |= IEEE80211_TX_CTL_NO_ACK;
- info->flags |= IEEE80211_TX_CTL_DO_NOT_ENCRYPT;
- info->control.retry_limit = 1;
info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
- (*num_beacons)++;
-out:
+ info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
+ out:
rcu_read_unlock();
return skb;
}
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));
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 ieee80211_local *local = hw_to_local(hw);
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)
rcu_read_lock();
beacon = rcu_dereference(bss->beacon);
- if (sdata->vif.type != IEEE80211_IF_TYPE_AP || !beacon || !beacon->head)
+ if (sdata->vif.type != NL80211_IFTYPE_AP || !beacon || !beacon->head)
goto out;
if (bss->dtim_count != 0)
cpu_to_le16(IEEE80211_FCTL_MOREDATA);
}
- if (!ieee80211_tx_prepare(&tx, skb, local->mdev))
+ if (!ieee80211_tx_prepare(local, &tx, skb))
break;
dev_kfree_skb_any(skb);
}
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;
- }
-
- if (WARN_ON(tx.skb != skb))
- return NULL;
-
- 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:
+ out:
rcu_read_unlock();
return skb;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff