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authorJohannes Berg <johannes@sipsolutions.net>2007-07-27 15:43:22 +0200
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:47:33 -0700
commite2ebc74d7e3d71600640db6fbb28cc2f362184c1 (patch)
tree7f9a830869b9f6157ee8235feb4953df7a639dbd /net/mac80211/ieee80211.c
parent340e11f332c695c43f506e82b1d39d00716c5005 (diff)
[MAC80211]: split TX path into own file
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/ieee80211.c')
-rw-r--r--net/mac80211/ieee80211.c1845
1 files changed, 0 insertions, 1845 deletions
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index c0094209bed..a35e3a95a15 100644
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -24,7 +24,6 @@
#include <linux/compiler.h>
#include <linux/bitmap.h>
#include <net/cfg80211.h>
-#include <asm/unaligned.h>
#include "ieee80211_common.h"
#include "ieee80211_i.h"
@@ -68,16 +67,6 @@ struct ieee80211_tx_status_rtap_hdr {
} __attribute__ ((packed));
-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;
-}
-
struct ieee80211_key_conf *
ieee80211_key_data2conf(struct ieee80211_local *local,
const struct ieee80211_key *data)
@@ -346,45 +335,6 @@ int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
-#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;
-
- 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=" MAC_FMT, MAC_ARG(hdr->addr1));
- if (hdrlen >= 16)
- printk(" A2=" MAC_FMT, MAC_ARG(hdr->addr2));
- if (hdrlen >= 24)
- printk(" A3=" MAC_FMT, MAC_ARG(hdr->addr3));
- if (hdrlen >= 30)
- printk(" A4=" MAC_FMT, MAC_ARG(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 */
-
-
int ieee80211_is_eapol(const struct sk_buff *skb)
{
const struct ieee80211_hdr *hdr;
@@ -411,187 +361,6 @@ int ieee80211_is_eapol(const struct sk_buff *skb)
}
-static ieee80211_txrx_result
-ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx)
-{
- struct rate_control_extra extra;
-
- memset(&extra, 0, sizeof(extra));
- extra.mode = tx->u.tx.mode;
- extra.mgmt_data = tx->sdata &&
- tx->sdata->type == IEEE80211_IF_TYPE_MGMT;
- extra.ethertype = tx->ethertype;
-
- tx->u.tx.rate = rate_control_get_rate(tx->local, tx->dev, tx->skb,
- &extra);
- if (unlikely(extra.probe != NULL)) {
- tx->u.tx.control->flags |= IEEE80211_TXCTL_RATE_CTRL_PROBE;
- tx->u.tx.probe_last_frag = 1;
- tx->u.tx.control->alt_retry_rate = tx->u.tx.rate->val;
- tx->u.tx.rate = extra.probe;
- } else {
- tx->u.tx.control->alt_retry_rate = -1;
- }
- if (!tx->u.tx.rate)
- return TXRX_DROP;
- if (tx->u.tx.mode->mode == MODE_IEEE80211G &&
- tx->sdata->use_protection && tx->fragmented &&
- extra.nonerp) {
- tx->u.tx.last_frag_rate = tx->u.tx.rate;
- tx->u.tx.probe_last_frag = extra.probe ? 1 : 0;
-
- tx->u.tx.rate = extra.nonerp;
- tx->u.tx.control->rate = extra.nonerp;
- tx->u.tx.control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
- } else {
- tx->u.tx.last_frag_rate = tx->u.tx.rate;
- tx->u.tx.control->rate = tx->u.tx.rate;
- }
- tx->u.tx.control->tx_rate = tx->u.tx.rate->val;
- if ((tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) &&
- tx->local->short_preamble &&
- (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) {
- tx->u.tx.short_preamble = 1;
- tx->u.tx.control->tx_rate = tx->u.tx.rate->val2;
- }
-
- return TXRX_CONTINUE;
-}
-
-
-static ieee80211_txrx_result
-ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
-{
- if (tx->sta)
- tx->u.tx.control->key_idx = tx->sta->key_idx_compression;
- else
- tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
-
- if (unlikely(tx->u.tx.control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
- tx->key = NULL;
- else if (tx->sta && tx->sta->key)
- tx->key = tx->sta->key;
- else if (tx->sdata->default_key)
- tx->key = tx->sdata->default_key;
- else if (tx->sdata->drop_unencrypted &&
- !(tx->sdata->eapol && ieee80211_is_eapol(tx->skb))) {
- I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
- return TXRX_DROP;
- } else
- tx->key = NULL;
-
- if (tx->key) {
- tx->key->tx_rx_count++;
- if (unlikely(tx->local->key_tx_rx_threshold &&
- tx->key->tx_rx_count >
- tx->local->key_tx_rx_threshold)) {
- ieee80211_key_threshold_notify(tx->dev, tx->key,
- tx->sta);
- }
- }
-
- return TXRX_CONTINUE;
-}
-
-
-static ieee80211_txrx_result
-ieee80211_tx_h_fragment(struct ieee80211_txrx_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;
- int frag_threshold = tx->local->fragmentation_threshold;
-
- if (!tx->fragmented)
- return TXRX_CONTINUE;
-
- first = tx->skb;
-
- hdrlen = ieee80211_get_hdrlen(tx->fc);
- payload_len = first->len - hdrlen;
- per_fragm = frag_threshold - hdrlen - FCS_LEN;
- num_fragm = (payload_len + per_fragm - 1) / per_fragm;
-
- frags = kzalloc(num_fragm * sizeof(struct sk_buff *), GFP_ATOMIC);
- if (!frags)
- goto fail;
-
- 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;
-
- if (left <= 0)
- goto fail;
-
- /* 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);
-
- tx->u.tx.num_extra_frag = num_fragm - 1;
- tx->u.tx.extra_frag = frags;
-
- return TXRX_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 TXRX_DROP;
-}
-
-
-static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb)
-{
- if (tx->key->force_sw_encrypt) {
- if (ieee80211_wep_encrypt(tx->local, skb, tx->key))
- return -1;
- } else {
- tx->u.tx.control->key_idx = tx->key->hw_key_idx;
- if (tx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) {
- if (ieee80211_wep_add_iv(tx->local, skb, tx->key) ==
- NULL)
- return -1;
- }
- }
- return 0;
-}
-
-
void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
@@ -609,44 +378,6 @@ void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
}
-static ieee80211_txrx_result
-ieee80211_tx_h_wep_encrypt(struct ieee80211_txrx_data *tx)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
- u16 fc;
-
- fc = le16_to_cpu(hdr->frame_control);
-
- if (!tx->key || tx->key->alg != ALG_WEP ||
- ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
- ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
- (fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)))
- return TXRX_CONTINUE;
-
- tx->u.tx.control->iv_len = WEP_IV_LEN;
- tx->u.tx.control->icv_len = WEP_ICV_LEN;
- ieee80211_tx_set_iswep(tx);
-
- if (wep_encrypt_skb(tx, tx->skb) < 0) {
- I802_DEBUG_INC(tx->local->tx_handlers_drop_wep);
- return TXRX_DROP;
- }
-
- if (tx->u.tx.extra_frag) {
- int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- if (wep_encrypt_skb(tx, tx->u.tx.extra_frag[i]) < 0) {
- I802_DEBUG_INC(tx->local->
- tx_handlers_drop_wep);
- return TXRX_DROP;
- }
- }
- }
-
- return TXRX_CONTINUE;
-}
-
-
static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble)
{
@@ -720,1400 +451,6 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
EXPORT_SYMBOL(ieee80211_generic_frame_duration);
-static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
- int next_frag_len)
-{
- int rate, mrate, erp, dur, i;
- struct ieee80211_rate *txrate = tx->u.tx.rate;
- struct ieee80211_local *local = tx->local;
- struct ieee80211_hw_mode *mode = tx->u.tx.mode;
-
- erp = txrate->flags & IEEE80211_RATE_ERP;
-
- /*
- * data and mgmt (except PS Poll):
- * - during CFP: 32768
- * - during contention period:
- * if addr1 is group address: 0
- * if more fragments = 0 and addr1 is individual address: time to
- * transmit one ACK plus SIFS
- * if more fragments = 1 and addr1 is individual address: time to
- * transmit next fragment plus 2 x ACK plus 3 x SIFS
- *
- * IEEE 802.11, 9.6:
- * - control response frame (CTS or ACK) shall be transmitted using the
- * same rate as the immediately previous frame in the frame exchange
- * sequence, if this rate belongs to the PHY mandatory rates, or else
- * at the highest possible rate belonging to the PHY rates in the
- * BSSBasicRateSet
- */
-
- if ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) {
- /* TODO: These control frames are not currently sent by
- * 80211.o, 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
- * one CTS frame plus one ACK frame plus 3 x SIFS
- * CTS: duration of immediately previous RTS minus time
- * required to transmit CTS and its SIFS
- * ACK: 0 if immediately previous directed data/mgmt had
- * more=0, with more=1 duration in ACK frame is duration
- * from previous frame minus time needed to transmit ACK
- * and its SIFS
- * PS Poll: BIT(15) | BIT(14) | aid
- */
- return 0;
- }
-
- /* data/mgmt */
- if (0 /* FIX: data/mgmt during CFP */)
- return 32768;
-
- if (group_addr) /* Group address as the destination - no ACK */
- return 0;
-
- /* Individual destination address:
- * IEEE 802.11, Ch. 9.6 (after IEEE 802.11g changes)
- * CTS and ACK frames shall be transmitted using the highest rate in
- * basic rate set that is less than or equal to the rate of the
- * immediately previous frame and that is using the same modulation
- * (CCK or OFDM). If no basic rate set matches with these requirements,
- * the highest mandatory rate of the PHY that is less than or equal to
- * the rate of the previous frame is used.
- * Mandatory rates for IEEE 802.11g PHY: 1, 2, 5.5, 11, 6, 12, 24 Mbps
- */
- rate = -1;
- mrate = 10; /* use 1 Mbps if everything fails */
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *r = &mode->rates[i];
- if (r->rate > txrate->rate)
- break;
-
- if (IEEE80211_RATE_MODULATION(txrate->flags) !=
- IEEE80211_RATE_MODULATION(r->flags))
- continue;
-
- if (r->flags & IEEE80211_RATE_BASIC)
- rate = r->rate;
- else if (r->flags & IEEE80211_RATE_MANDATORY)
- mrate = r->rate;
- }
- if (rate == -1) {
- /* No matching basic rate found; use highest suitable mandatory
- * PHY rate */
- rate = mrate;
- }
-
- /* Time needed to transmit ACK
- * (10 bytes + 4-byte FCS = 112 bits) plus SIFS; rounded up
- * to closest integer */
-
- dur = ieee80211_frame_duration(local, 10, rate, erp,
- local->short_preamble);
-
- if (next_frag_len) {
- /* Frame is fragmented: duration increases with time needed to
- * transmit next fragment plus ACK and 2 x SIFS. */
- dur *= 2; /* ACK + SIFS */
- /* next fragment */
- dur += ieee80211_frame_duration(local, next_frag_len,
- txrate->rate, erp,
- local->short_preamble);
- }
-
- return dur;
-}
-
-
-static ieee80211_txrx_result
-ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
- u16 dur;
- struct ieee80211_tx_control *control = tx->u.tx.control;
- struct ieee80211_hw_mode *mode = tx->u.tx.mode;
-
- 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->retry_limit =
- tx->local->long_retry_limit;
- } else {
- control->retry_limit =
- tx->local->short_retry_limit;
- }
- } else {
- control->retry_limit = 1;
- }
-
- if (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 = -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 (mode->mode == MODE_IEEE80211G &&
- (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) &&
- tx->u.tx.unicast && tx->sdata->use_protection &&
- !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS))
- control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT;
-
- /* 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->fragmented ? tx->u.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_rate *rate;
-
- /* Do not use multiple retry rates when using RTS/CTS */
- control->alt_retry_rate = -1;
-
- /* Use min(data rate, max base rate) as CTS/RTS rate */
- rate = tx->u.tx.rate;
- while (rate > mode->rates &&
- !(rate->flags & IEEE80211_RATE_BASIC))
- rate--;
-
- control->rts_cts_rate = rate->val;
- control->rts_rate = rate;
- }
-
- if (tx->sta) {
- tx->sta->tx_packets++;
- tx->sta->tx_fragments++;
- tx->sta->tx_bytes += tx->skb->len;
- if (tx->u.tx.extra_frag) {
- int i;
- tx->sta->tx_fragments += tx->u.tx.num_extra_frag;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- tx->sta->tx_bytes +=
- tx->u.tx.extra_frag[i]->len;
- }
- }
- }
-
- return TXRX_CONTINUE;
-}
-
-
-static ieee80211_txrx_result
-ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
-{
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- struct sk_buff *skb = tx->skb;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- u32 sta_flags;
-
- if (unlikely(tx->local->sta_scanning != 0) &&
- ((tx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
- (tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ))
- return TXRX_DROP;
-
- if (tx->u.tx.ps_buffered)
- return TXRX_CONTINUE;
-
- sta_flags = tx->sta ? tx->sta->flags : 0;
-
- if (likely(tx->u.tx.unicast)) {
- if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
- tx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
- (tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: dropped data frame to not "
- "associated station " MAC_FMT "\n",
- tx->dev->name, MAC_ARG(hdr->addr1));
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc);
- return TXRX_DROP;
- }
- } else {
- if (unlikely((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
- tx->local->num_sta == 0 &&
- !tx->local->allow_broadcast_always &&
- tx->sdata->type != IEEE80211_IF_TYPE_IBSS)) {
- /*
- * No associated STAs - no need to send multicast
- * frames.
- */
- return TXRX_DROP;
- }
- return TXRX_CONTINUE;
- }
-
- if (unlikely(!tx->u.tx.mgmt_interface && tx->sdata->ieee802_1x &&
- !(sta_flags & WLAN_STA_AUTHORIZED))) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: dropped frame to " MAC_FMT
- " (unauthorized port)\n", tx->dev->name,
- MAC_ARG(hdr->addr1));
-#endif
- I802_DEBUG_INC(tx->local->tx_handlers_drop_unauth_port);
- return TXRX_DROP;
- }
-
- return TXRX_CONTINUE;
-}
-
-static ieee80211_txrx_result
-ieee80211_tx_h_sequence(struct ieee80211_txrx_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 TXRX_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
- * from each queue should be OK to make some room for new frames. */
-static void purge_old_ps_buffers(struct ieee80211_local *local)
-{
- int total = 0, purged = 0;
- struct sk_buff *skb;
- struct ieee80211_sub_if_data *sdata;
- struct sta_info *sta;
-
- read_lock(&local->sub_if_lock);
- list_for_each_entry(sdata, &local->sub_if_list, list) {
- struct ieee80211_if_ap *ap;
- if (sdata->dev == local->mdev ||
- sdata->type != IEEE80211_IF_TYPE_AP)
- continue;
- ap = &sdata->u.ap;
- skb = skb_dequeue(&ap->ps_bc_buf);
- if (skb) {
- purged++;
- dev_kfree_skb(skb);
- }
- total += skb_queue_len(&ap->ps_bc_buf);
- }
- read_unlock(&local->sub_if_lock);
-
- spin_lock_bh(&local->sta_lock);
- list_for_each_entry(sta, &local->sta_list, list) {
- skb = skb_dequeue(&sta->ps_tx_buf);
- if (skb) {
- purged++;
- dev_kfree_skb(skb);
- }
- total += skb_queue_len(&sta->ps_tx_buf);
- }
- spin_unlock_bh(&local->sta_lock);
-
- local->total_ps_buffered = total;
- printk(KERN_DEBUG "%s: PS buffers full - purged %d frames\n",
- local->mdev->name, purged);
-}
-
-
-static inline ieee80211_txrx_result
-ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx)
-{
- /* broadcast/multicast frame */
- /* If any of the associated stations is in power save mode,
- * the frame is buffered to be sent after DTIM beacon frame */
- if ((tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) &&
- tx->sdata->type != IEEE80211_IF_TYPE_WDS &&
- tx->sdata->bss && atomic_read(&tx->sdata->bss->num_sta_ps) &&
- !(tx->fc & IEEE80211_FCTL_ORDER)) {
- if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
- purge_old_ps_buffers(tx->local);
- if (skb_queue_len(&tx->sdata->bss->ps_bc_buf) >=
- AP_MAX_BC_BUFFER) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: BC TX buffer full - "
- "dropping the oldest frame\n",
- tx->dev->name);
- }
- dev_kfree_skb(skb_dequeue(&tx->sdata->bss->ps_bc_buf));
- } else
- tx->local->total_ps_buffered++;
- skb_queue_tail(&tx->sdata->bss->ps_bc_buf, tx->skb);
- return TXRX_QUEUED;
- }
-
- return TXRX_CONTINUE;
-}
-
-
-static inline ieee80211_txrx_result
-ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
-{
- struct sta_info *sta = tx->sta;
-
- if (unlikely(!sta ||
- ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
- (tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)))
- return TXRX_CONTINUE;
-
- if (unlikely((sta->flags & WLAN_STA_PS) && !sta->pspoll)) {
- struct ieee80211_tx_packet_data *pkt_data;
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- printk(KERN_DEBUG "STA " MAC_FMT " aid %d: PS buffer (entries "
- "before %d)\n",
- MAC_ARG(sta->addr), sta->aid,
- skb_queue_len(&sta->ps_tx_buf));
-#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
- sta->flags |= WLAN_STA_TIM;
- 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);
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: STA " MAC_FMT " TX "
- "buffer full - dropping oldest frame\n",
- tx->dev->name, MAC_ARG(sta->addr));
- }
- dev_kfree_skb(old);
- } else
- tx->local->total_ps_buffered++;
- /* Queue frame to be sent after STA sends an PS Poll frame */
- if (skb_queue_empty(&sta->ps_tx_buf)) {
- if (tx->local->ops->set_tim)
- tx->local->ops->set_tim(local_to_hw(tx->local),
- sta->aid, 1);
- if (tx->sdata->bss)
- bss_tim_set(tx->local, tx->sdata->bss, sta->aid);
- }
- pkt_data = (struct ieee80211_tx_packet_data *)tx->skb->cb;
- pkt_data->jiffies = jiffies;
- skb_queue_tail(&sta->ps_tx_buf, tx->skb);
- return TXRX_QUEUED;
- }
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- else if (unlikely(sta->flags & WLAN_STA_PS)) {
- printk(KERN_DEBUG "%s: STA " MAC_FMT " in PS mode, but pspoll "
- "set -> send frame\n", tx->dev->name,
- MAC_ARG(sta->addr));
- }
-#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
- sta->pspoll = 0;
-
- return TXRX_CONTINUE;
-}
-
-
-static ieee80211_txrx_result
-ieee80211_tx_h_ps_buf(struct ieee80211_txrx_data *tx)
-{
- if (unlikely(tx->u.tx.ps_buffered))
- return TXRX_CONTINUE;
-
- if (tx->u.tx.unicast)
- return ieee80211_tx_h_unicast_ps_buf(tx);
- else
- return ieee80211_tx_h_multicast_ps_buf(tx);
-}
-
-
-/*
- * deal with packet injection down monitor interface
- * with Radiotap Header -- only called for monitor mode interface
- */
-
-static ieee80211_txrx_result
-__ieee80211_parse_tx_radiotap(
- struct ieee80211_txrx_data *tx,
- struct sk_buff *skb, struct ieee80211_tx_control *control)
-{
- /*
- * this is the moment to interpret and discard the radiotap header that
- * must be at the start of the packet injected in Monitor mode
- *
- * Need to take some care with endian-ness since radiotap
- * args are little-endian
- */
-
- struct ieee80211_radiotap_iterator iterator;
- struct ieee80211_radiotap_header *rthdr =
- (struct ieee80211_radiotap_header *) skb->data;
- struct ieee80211_hw_mode *mode = tx->local->hw.conf.mode;
- int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len);
-
- /*
- * default control situation for all injected packets
- * FIXME: this does not suit all usage cases, expand to allow control
- */
-
- control->retry_limit = 1; /* no retry */
- control->key_idx = -1; /* no encryption key */
- control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS |
- IEEE80211_TXCTL_USE_CTS_PROTECT);
- control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT |
- IEEE80211_TXCTL_NO_ACK;
- control->antenna_sel_tx = 0; /* default to default antenna */
-
- /*
- * for every radiotap entry that is present
- * (ieee80211_radiotap_iterator_next returns -ENOENT when no more
- * entries present, or -EINVAL on error)
- */
-
- while (!ret) {
- int i, target_rate;
-
- ret = ieee80211_radiotap_iterator_next(&iterator);
-
- if (ret)
- continue;
-
- /* see if this argument is something we can use */
- switch (iterator.this_arg_index) {
- /*
- * You must take care when dereferencing iterator.this_arg
- * for multibyte types... the pointer is not aligned. Use
- * 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 < mode->num_rates; i++) {
- struct ieee80211_rate *r = &mode->rates[i];
-
- if (r->rate > target_rate)
- continue;
-
- control->rate = r;
-
- if (r->flags & IEEE80211_RATE_PREAMBLE2)
- control->tx_rate = r->val2;
- else
- control->tx_rate = r->val;
-
- /* end on exact match */
- if (r->rate == target_rate)
- i = mode->num_rates;
- }
- break;
-
- case IEEE80211_RADIOTAP_ANTENNA:
- /*
- * radiotap uses 0 for 1st ant, mac80211 is 1 for
- * 1st ant
- */
- control->antenna_sel_tx = (*iterator.this_arg) + 1;
- break;
-
- case IEEE80211_RADIOTAP_DBM_TX_POWER:
- control->power_level = *iterator.this_arg;
- break;
-
- case IEEE80211_RADIOTAP_FLAGS:
- if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FCS) {
- /*
- * this indicates that the skb we have been
- * handed has the 32-bit FCS CRC at the end...
- * we should react to that by snipping it off
- * because it will be recomputed and added
- * on transmission
- */
- if (skb->len < (iterator.max_length + FCS_LEN))
- return TXRX_DROP;
-
- skb_trim(skb, skb->len - FCS_LEN);
- }
- break;
-
- default:
- break;
- }
- }
-
- if (ret != -ENOENT) /* ie, if we didn't simply run out of fields */
- return TXRX_DROP;
-
- /*
- * remove the radiotap header
- * iterator->max_length was sanity-checked against
- * skb->len by iterator init
- */
- skb_pull(skb, iterator.max_length);
-
- return TXRX_CONTINUE;
-}
-
-
-static ieee80211_txrx_result inline
-__ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
- struct sk_buff *skb,
- struct net_device *dev,
- struct ieee80211_tx_control *control)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct ieee80211_sub_if_data *sdata;
- ieee80211_txrx_result res = TXRX_CONTINUE;
-
- int hdrlen;
-
- memset(tx, 0, sizeof(*tx));
- tx->skb = skb;
- tx->dev = dev; /* use original interface */
- tx->local = local;
- tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- tx->sta = sta_info_get(local, hdr->addr1);
- tx->fc = le16_to_cpu(hdr->frame_control);
-
- /*
- * set defaults for things that can be set by
- * injected radiotap headers
- */
- control->power_level = local->hw.conf.power_level;
- control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
- if (local->sta_antenna_sel != STA_ANTENNA_SEL_AUTO && tx->sta)
- control->antenna_sel_tx = tx->sta->antenna_sel_tx;
-
- /* process and remove the injection radiotap header */
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (unlikely(sdata->type == IEEE80211_IF_TYPE_MNTR)) {
- if (__ieee80211_parse_tx_radiotap(tx, skb, control) ==
- TXRX_DROP) {
- return TXRX_DROP;
- }
- /*
- * we removed the radiotap header after this point,
- * we filled control with what we could use
- * set to the actual ieee header now
- */
- hdr = (struct ieee80211_hdr *) skb->data;
- res = TXRX_QUEUED; /* indication it was monitor packet */
- }
-
- tx->u.tx.control = control;
- tx->u.tx.unicast = !is_multicast_ether_addr(hdr->addr1);
- if (is_multicast_ether_addr(hdr->addr1))
- control->flags |= IEEE80211_TXCTL_NO_ACK;
- else
- control->flags &= ~IEEE80211_TXCTL_NO_ACK;
- tx->fragmented = local->fragmentation_threshold <
- IEEE80211_MAX_FRAG_THRESHOLD && tx->u.tx.unicast &&
- skb->len + FCS_LEN > local->fragmentation_threshold &&
- (!local->ops->set_frag_threshold);
- if (!tx->sta)
- control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
- else if (tx->sta->clear_dst_mask) {
- control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
- tx->sta->clear_dst_mask = 0;
- }
- 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;
-
- return res;
-}
-
-static int inline is_ieee80211_device(struct net_device *dev,
- struct net_device *master)
-{
- return (wdev_priv(dev->ieee80211_ptr) ==
- wdev_priv(master->ieee80211_ptr));
-}
-
-/* Device in tx->dev has a reference added; use dev_put(tx->dev) when
- * finished with it. */
-static int inline ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
- struct sk_buff *skb,
- struct net_device *mdev,
- struct ieee80211_tx_control *control)
-{
- 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(pkt_data->ifindex);
- if (unlikely(dev && !is_ieee80211_device(dev, mdev))) {
- dev_put(dev);
- dev = NULL;
- }
- if (unlikely(!dev))
- return -ENODEV;
- __ieee80211_tx_prepare(tx, skb, dev, control);
- return 0;
-}
-
-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]);
-}
-
-#define IEEE80211_TX_OK 0
-#define IEEE80211_TX_AGAIN 1
-#define IEEE80211_TX_FRAG_AGAIN 2
-
-static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
- struct ieee80211_txrx_data *tx)
-{
- struct ieee80211_tx_control *control = tx->u.tx.control;
- 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) {
- ieee80211_dump_frame(local->mdev->name, "TX to low-level driver", skb);
- ret = local->ops->tx(local_to_hw(local), skb, control);
- if (ret)
- return IEEE80211_TX_AGAIN;
- local->mdev->trans_start = jiffies;
- ieee80211_led_tx(local, 1);
- }
- if (tx->u.tx.extra_frag) {
- control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS |
- IEEE80211_TXCTL_USE_CTS_PROTECT |
- IEEE80211_TXCTL_CLEAR_DST_MASK |
- IEEE80211_TXCTL_FIRST_FRAGMENT);
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- if (!tx->u.tx.extra_frag[i])
- continue;
- if (__ieee80211_queue_stopped(local, control->queue))
- return IEEE80211_TX_FRAG_AGAIN;
- if (i == tx->u.tx.num_extra_frag) {
- control->tx_rate = tx->u.tx.last_frag_hwrate;
- control->rate = tx->u.tx.last_frag_rate;
- if (tx->u.tx.probe_last_frag)
- control->flags |=
- IEEE80211_TXCTL_RATE_CTRL_PROBE;
- else
- control->flags &=
- ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
- }
-
- ieee80211_dump_frame(local->mdev->name,
- "TX to low-level driver",
- tx->u.tx.extra_frag[i]);
- ret = local->ops->tx(local_to_hw(local),
- tx->u.tx.extra_frag[i],
- control);
- if (ret)
- return IEEE80211_TX_FRAG_AGAIN;
- local->mdev->trans_start = jiffies;
- ieee80211_led_tx(local, 1);
- tx->u.tx.extra_frag[i] = NULL;
- }
- kfree(tx->u.tx.extra_frag);
- tx->u.tx.extra_frag = NULL;
- }
- return IEEE80211_TX_OK;
-}
-
-static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
- struct ieee80211_tx_control *control, int mgmt)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- ieee80211_tx_handler *handler;
- struct ieee80211_txrx_data tx;
- ieee80211_txrx_result res = TXRX_DROP, res_prepare;
- int ret, i;
-
- WARN_ON(__ieee80211_queue_pending(local, control->queue));
-
- if (unlikely(skb->len < 10)) {
- dev_kfree_skb(skb);
- return 0;
- }
-
- res_prepare = __ieee80211_tx_prepare(&tx, skb, dev, control);
-
- if (res_prepare == TXRX_DROP) {
- dev_kfree_skb(skb);
- return 0;
- }
-
- sta = tx.sta;
- tx.u.tx.mgmt_interface = mgmt;
- tx.u.tx.mode = local->hw.conf.mode;
-
- if (res_prepare == TXRX_QUEUED) { /* if it was an injected packet */
- res = TXRX_CONTINUE;
- } else {
- for (handler = local->tx_handlers; *handler != NULL;
- handler++) {
- res = (*handler)(&tx);
- if (res != TXRX_CONTINUE)
- break;
- }
- }
-
- skb = tx.skb; /* handlers are allowed to change skb */
-
- if (sta)
- sta_info_put(sta);
-
- if (unlikely(res == TXRX_DROP)) {
- I802_DEBUG_INC(local->tx_handlers_drop);
- goto drop;
- }
-
- if (unlikely(res == TXRX_QUEUED)) {
- I802_DEBUG_INC(local->tx_handlers_queued);
- return 0;
- }
-
- if (tx.u.tx.extra_frag) {
- for (i = 0; i < tx.u.tx.num_extra_frag; i++) {
- int next_len, dur;
- struct ieee80211_hdr *hdr =
- (struct ieee80211_hdr *)
- tx.u.tx.extra_frag[i]->data;
-
- if (i + 1 < tx.u.tx.num_extra_frag) {
- next_len = tx.u.tx.extra_frag[i + 1]->len;
- } else {
- next_len = 0;
- tx.u.tx.rate = tx.u.tx.last_frag_rate;
- tx.u.tx.last_frag_hwrate = tx.u.tx.rate->val;
- }
- 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 =
- &local->pending_packet[control->queue];
-
- if (ret == IEEE80211_TX_FRAG_AGAIN)
- skb = NULL;
- set_bit(IEEE80211_LINK_STATE_PENDING,
- &local->state[control->queue]);
- 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
- * 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
- * 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]);
- goto retry;
- }
- memcpy(&store->control, control,
- sizeof(struct ieee80211_tx_control));
- store->skb = skb;
- store->extra_frag = tx.u.tx.extra_frag;
- store->num_extra_frag = tx.u.tx.num_extra_frag;
- store->last_frag_hwrate = tx.u.tx.last_frag_hwrate;
- store->last_frag_rate = tx.u.tx.last_frag_rate;
- store->last_frag_rate_ctrl_probe = tx.u.tx.probe_last_frag;
- }
- return 0;
-
- drop:
- if (skb)
- dev_kfree_skb(skb);
- for (i = 0; i < tx.u.tx.num_extra_frag; i++)
- if (tx.u.tx.extra_frag[i])
- dev_kfree_skb(tx.u.tx.extra_frag[i]);
- kfree(tx.u.tx.extra_frag);
- return 0;
-}
-
-static 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_txrx_data tx;
- int i, ret, reschedule = 0;
-
- netif_tx_lock_bh(dev);
- for (i = 0; i < local->hw.queues; i++) {
- if (__ieee80211_queue_stopped(local, i))
- continue;
- if (!__ieee80211_queue_pending(local, i)) {
- reschedule = 1;
- continue;
- }
- store = &local->pending_packet[i];
- tx.u.tx.control = &store->control;
- tx.u.tx.extra_frag = store->extra_frag;
- tx.u.tx.num_extra_frag = store->num_extra_frag;
- tx.u.tx.last_frag_hwrate = store->last_frag_hwrate;
- tx.u.tx.last_frag_rate = store->last_frag_rate;
- tx.u.tx.probe_last_frag = store->last_frag_rate_ctrl_probe;
- ret = __ieee80211_tx(local, store->skb, &tx);
- if (ret) {
- if (ret == IEEE80211_TX_FRAG_AGAIN)
- store->skb = NULL;
- } else {
- clear_bit(IEEE80211_LINK_STATE_PENDING,
- &local->state[i]);
- reschedule = 1;
- }
- }
- 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);
- }
-}
-
-static 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))
- 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]);
- }
-}
-
-static 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 net_device *odev = NULL;
- struct ieee80211_sub_if_data *osdata;
- int headroom;
- 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(pkt_data->ifindex);
- if (unlikely(odev && !is_ieee80211_device(odev, dev))) {
- dev_put(odev);
- odev = NULL;
- }
- if (unlikely(!odev)) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: Discarded packet with nonexistent "
- "originating device\n", dev->name);
-#endif
- dev_kfree_skb(skb);
- return 0;
- }
- 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;
- }
- }
-
- control.ifindex = odev->ifindex;
- control.type = osdata->type;
- if (pkt_data->req_tx_status)
- control.flags |= IEEE80211_TXCTL_REQ_TX_STATUS;
- if (pkt_data->do_not_encrypt)
- control.flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
- if (pkt_data->requeue)
- control.flags |= IEEE80211_TXCTL_REQUEUE;
- control.queue = pkt_data->queue;
-
- ret = ieee80211_tx(odev, skb, &control,
- control.type == IEEE80211_IF_TYPE_MGMT);
- dev_put(odev);
-
- return ret;
-}
-
-
-int ieee80211_monitor_start_xmit(struct sk_buff *skb,
- 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;
-
- /*
- * there must be a radiotap header at the
- * start in this case
- */
- if (unlikely(prthdr->it_version)) {
- /* only version 0 is supported */
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- skb->dev = local->mdev;
-
- pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
- memset(pkt_data, 0, sizeof(*pkt_data));
- pkt_data->ifindex = dev->ifindex;
- pkt_data->mgmt_iface = 0;
- pkt_data->do_not_encrypt = 1;
-
- /* above needed because we set skb device to master */
-
- /*
- * fix up the pointers accounting for the radiotap
- * header still being in there. We are being given
- * a precooked IEEE80211 header so no need for
- * normal processing
- */
- len = le16_to_cpu(get_unaligned(&prthdr->it_len));
- skb_set_mac_header(skb, len);
- skb_set_network_header(skb, len + sizeof(struct ieee80211_hdr));
- skb_set_transport_header(skb, len + sizeof(struct ieee80211_hdr));
-
- /*
- * pass the radiotap header up to
- * the next stage intact
- */
- dev_queue_xmit(skb);
-
- return NETDEV_TX_OK;
-}
-
-
-/**
- * ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type
- * subinterfaces (wlan#, WDS, and VLAN interfaces)
- * @skb: packet to be sent
- * @dev: incoming interface
- *
- * Returns: 0 on success (and frees skb in this case) or 1 on failure (skb will
- * not be freed, and caller is responsible for either retrying later or freeing
- * skb).
- *
- * This function takes in an Ethernet header and encapsulates it with suitable
- * IEEE 802.11 header based on which interface the packet is coming in. The
- * encapsulated packet will then be passed to master interface, wlan#.11, for
- * transmission (through low-level driver).
- */
-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_packet_data *pkt_data;
- struct ieee80211_sub_if_data *sdata;
- int ret = 1, head_need;
- u16 ethertype, hdrlen, fc;
- struct ieee80211_hdr hdr;
- const u8 *encaps_data;
- int encaps_len, skip_header_bytes;
- int nh_pos, h_pos, no_encrypt = 0;
- struct sta_info *sta;
-
- 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;
- }
-
- nh_pos = skb_network_header(skb) - skb->data;
- h_pos = skb_transport_header(skb) - skb->data;
-
- /* convert Ethernet header to proper 802.11 header (based on
- * operation mode) */
- ethertype = (skb->data[12] << 8) | skb->data[13];
- /* TODO: handling for 802.1x authorized/unauthorized port */
- fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
-
- if (likely(sdata->type == IEEE80211_IF_TYPE_AP ||
- sdata->type == IEEE80211_IF_TYPE_VLAN)) {
- fc |= 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;
- } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
- fc |= 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);
- memcpy(hdr.addr3, skb->data, ETH_ALEN);
- memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
- hdrlen = 30;
- } else if (sdata->type == IEEE80211_IF_TYPE_STA) {
- fc |= IEEE80211_FCTL_TODS;
- /* BSSID SA DA */
- memcpy(hdr.addr1, sdata->u.sta.bssid, ETH_ALEN);
- memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
- memcpy(hdr.addr3, skb->data, ETH_ALEN);
- hdrlen = 24;
- } else if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
- /* 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);
- hdrlen = 24;
- } else {
- ret = 0;
- goto fail;
- }
-
- /* receiver is QoS enabled, use a QoS type frame */
- sta = sta_info_get(local, hdr.addr1);
- if (sta) {
- if (sta->flags & WLAN_STA_WME) {
- fc |= IEEE80211_STYPE_QOS_DATA;
- hdrlen += 2;
- }
- sta_info_put(sta);
- }
-
- hdr.frame_control = cpu_to_le16(fc);
- hdr.duration_id = 0;
- hdr.seq_ctrl = 0;
-
- skip_header_bytes = ETH_HLEN;
- if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) {
- encaps_data = bridge_tunnel_header;
- encaps_len = sizeof(bridge_tunnel_header);
- skip_header_bytes -= 2;
- } else if (ethertype >= 0x600) {
- encaps_data = rfc1042_header;
- encaps_len = sizeof(rfc1042_header);
- skip_header_bytes -= 2;
- } else {
- encaps_data = NULL;
- encaps_len = 0;
- }
-
- skb_pull(skb, skip_header_bytes);
- 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 + local->tx_headroom;
- head_need -= 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. */
-
- 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);
- goto fail;
- }
- }
-
- if (encaps_data) {
- memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len);
- nh_pos += encaps_len;
- h_pos += encaps_len;
- }
- memcpy(skb_push(skb, hdrlen), &hdr, hdrlen);
- 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;
- pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
- pkt_data->do_not_encrypt = no_encrypt;
-
- skb->dev = local->mdev;
- sdata->stats.tx_packets++;
- sdata->stats.tx_bytes += skb->len;
-
- /* Update skb pointers to various headers since this modified frame
- * is going to go through Linux networking code that may potentially
- * need things like pointer to IP header. */
- skb_set_mac_header(skb, 0);
- skb_set_network_header(skb, nh_pos);
- skb_set_transport_header(skb, h_pos);
-
- dev->trans_start = jiffies;
- dev_queue_xmit(skb);
-
- return 0;
-
- fail:
- if (!ret)
- dev_kfree_skb(skb);
-
- return ret;
-}
-
-
-/*
- * This is the transmit routine for the 802.11 type interfaces
- * called by upper layers of the linux networking
- * stack when it has a frame to transmit
- */
-static int
-ieee80211_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_tx_packet_data *pkt_data;
- struct ieee80211_hdr *hdr;
- u16 fc;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (skb->len < 10) {
- dev_kfree_skb(skb);
- return 0;
- }
-
- if (skb_headroom(skb) < sdata->local->tx_headroom) {
- if (pskb_expand_head(skb, sdata->local->tx_headroom,
- 0, GFP_ATOMIC)) {
- dev_kfree_skb(skb);
- return 0;
- }
- }
-
- hdr = (struct ieee80211_hdr *) skb->data;
- fc = le16_to_cpu(hdr->frame_control);
-
- pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
- memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
- pkt_data->ifindex = sdata->dev->ifindex;
- pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
-
- skb->priority = 20; /* use hardcoded priority for mgmt TX queue */
- skb->dev = sdata->local->mdev;
-
- /*
- * We're using the protocol field of the the frame control header
- * to request TX callback for hostapd. BIT(1) is checked.
- */
- if ((fc & BIT(1)) == BIT(1)) {
- pkt_data->req_tx_status = 1;
- fc &= ~BIT(1);
- hdr->frame_control = cpu_to_le16(fc);
- }
-
- pkt_data->do_not_encrypt = !(fc & IEEE80211_FCTL_PROTECTED);
-
- sdata->stats.tx_packets++;
- sdata->stats.tx_bytes += skb->len;
-
- dev_queue_xmit(skb);
-
- return 0;
-}
-
-
-static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
- struct ieee80211_if_ap *bss,
- struct sk_buff *skb)
-{
- u8 *pos, *tim;
- int aid0 = 0;
- int i, have_bits = 0, n1, n2;
-
- /* Generate bitmap for TIM only if there are any STAs in power save
- * mode. */
- spin_lock_bh(&local->sta_lock);
- if (atomic_read(&bss->num_sta_ps) > 0)
- /* in the hope that this is faster than
- * checking byte-for-byte */
- have_bits = !bitmap_empty((unsigned long*)bss->tim,
- IEEE80211_MAX_AID+1);
-
- if (bss->dtim_count == 0)
- bss->dtim_count = bss->dtim_period - 1;
- else
- bss->dtim_count--;
-
- tim = pos = (u8 *) skb_put(skb, 6);
- *pos++ = WLAN_EID_TIM;
- *pos++ = 4;
- *pos++ = bss->dtim_count;
- *pos++ = bss->dtim_period;
-
- if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf))
- aid0 = 1;
-
- if (have_bits) {
- /* Find largest even number N1 so that bits numbered 1 through
- * (N1 x 8) - 1 in the bitmap are 0 and number N2 so that bits
- * (N2 + 1) x 8 through 2007 are 0. */
- n1 = 0;
- for (i = 0; i < IEEE80211_MAX_TIM_LEN; i++) {
- if (bss->tim[i]) {
- n1 = i & 0xfe;
- break;
- }
- }
- n2 = n1;
- for (i = IEEE80211_MAX_TIM_LEN - 1; i >= n1; i--) {
- if (bss->tim[i]) {
- n2 = i;
- break;
- }
- }
-
- /* Bitmap control */
- *pos++ = n1 | aid0;
- /* Part Virt Bitmap */
- memcpy(pos, bss->tim + n1, n2 - n1 + 1);
-
- tim[1] = n2 - n1 + 4;
- skb_put(skb, n2 - n1);
- } else {
- *pos++ = aid0; /* Bitmap control */
- *pos++ = 0; /* Part Virt Bitmap */
- }
- spin_unlock_bh(&local->sta_lock);
-}
-
-
-struct sk_buff * ieee80211_beacon_get(struct ieee80211_hw *hw, int if_id,
- struct ieee80211_tx_control *control)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct sk_buff *skb;
- struct net_device *bdev;
- struct ieee80211_sub_if_data *sdata = NULL;
- struct ieee80211_if_ap *ap = NULL;
- struct ieee80211_rate *rate;
- struct rate_control_extra extra;
- u8 *b_head, *b_tail;
- int bh_len, bt_len;
-
- bdev = dev_get_by_index(if_id);
- if (bdev) {
- sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
- ap = &sdata->u.ap;
- dev_put(bdev);
- }
-
- if (!ap || sdata->type != IEEE80211_IF_TYPE_AP ||
- !ap->beacon_head) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "no beacon data avail for idx=%d "
- "(%s)\n", if_id, bdev ? bdev->name : "N/A");
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- return NULL;
- }
-
- /* Assume we are generating the normal beacon locally */
- b_head = ap->beacon_head;
- b_tail = ap->beacon_tail;
- bh_len = ap->beacon_head_len;
- bt_len = ap->beacon_tail_len;
-
- skb = dev_alloc_skb(local->tx_headroom +
- bh_len + bt_len + 256 /* maximum TIM len */);
- if (!skb)
- return NULL;
-
- skb_reserve(skb, local->tx_headroom);
- memcpy(skb_put(skb, bh_len), b_head, bh_len);
-
- ieee80211_include_sequence(sdata, (struct ieee80211_hdr *)skb->data);
-
- ieee80211_beacon_add_tim(local, ap, skb);
-
- if (b_tail) {
- memcpy(skb_put(skb, bt_len), b_tail, bt_len);
- }
-
- if (control) {
- memset(&extra, 0, sizeof(extra));
- extra.mode = local->oper_hw_mode;
-
- rate = rate_control_get_rate(local, local->mdev, skb, &extra);
- if (!rate) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: ieee80211_beacon_get: no rate "
- "found\n", local->mdev->name);
- }
- dev_kfree_skb(skb);
- return NULL;
- }
-
- control->tx_rate = (local->short_preamble &&
- (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
- rate->val2 : rate->val;
- control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
- control->power_level = local->hw.conf.power_level;
- control->flags |= IEEE80211_TXCTL_NO_ACK;
- control->retry_limit = 1;
- control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
- }
-
- ap->num_beacons++;
- return skb;
-}
-EXPORT_SYMBOL(ieee80211_beacon_get);
-
__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
size_t frame_len,
const struct ieee80211_tx_control *frame_txctl)
@@ -2168,110 +505,6 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(ieee80211_ctstoself_duration);
-void ieee80211_rts_get(struct ieee80211_hw *hw,
- const void *frame, size_t frame_len,
- const struct ieee80211_tx_control *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->duration = ieee80211_rts_duration(hw, frame_len, frame_txctl);
- memcpy(rts->ra, hdr->addr1, sizeof(rts->ra));
- memcpy(rts->ta, hdr->addr2, sizeof(rts->ta));
-}
-EXPORT_SYMBOL(ieee80211_rts_get);
-
-void ieee80211_ctstoself_get(struct ieee80211_hw *hw,
- const void *frame, size_t frame_len,
- const struct ieee80211_tx_control *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->duration = ieee80211_ctstoself_duration(hw, frame_len, frame_txctl);
- memcpy(cts->ra, hdr->addr1, sizeof(cts->ra));
-}
-EXPORT_SYMBOL(ieee80211_ctstoself_get);
-
-struct sk_buff *
-ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
- struct ieee80211_tx_control *control)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct sk_buff *skb;
- struct sta_info *sta;
- ieee80211_tx_handler *handler;
- struct ieee80211_txrx_data tx;
- ieee80211_txrx_result res = TXRX_DROP;
- struct net_device *bdev;
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_ap *bss = NULL;
-
- bdev = dev_get_by_index(if_id);
- if (bdev) {
- sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
- bss = &sdata->u.ap;
- dev_put(bdev);
- }
- if (!bss || sdata->type != IEEE80211_IF_TYPE_AP || !bss->beacon_head)
- return NULL;
-
- if (bss->dtim_count != 0)
- return NULL; /* send buffered bc/mc only after DTIM beacon */
- memset(control, 0, sizeof(*control));
- while (1) {
- skb = skb_dequeue(&bss->ps_bc_buf);
- if (!skb)
- return NULL;
- local->total_ps_buffered--;
-
- if (!skb_queue_empty(&bss->ps_bc_buf) && skb->len >= 2) {
- struct ieee80211_hdr *hdr =
- (struct ieee80211_hdr *) skb->data;
- /* more buffered multicast/broadcast frames ==> set
- * MoreData flag in IEEE 802.11 header to inform PS
- * STAs */
- hdr->frame_control |=
- cpu_to_le16(IEEE80211_FCTL_MOREDATA);
- }
-
- if (ieee80211_tx_prepare(&tx, skb, local->mdev, control) == 0)
- break;
- dev_kfree_skb_any(skb);
- }
- sta = tx.sta;
- tx.u.tx.ps_buffered = 1;
-
- for (handler = local->tx_handlers; *handler != NULL; handler++) {
- res = (*handler)(&tx);
- if (res == TXRX_DROP || res == TXRX_QUEUED)
- break;
- }
- dev_put(tx.dev);
- skb = tx.skb; /* handlers are allowed to change skb */
-
- if (res == TXRX_DROP) {
- I802_DEBUG_INC(local->tx_handlers_drop);
- dev_kfree_skb(skb);
- skb = NULL;
- } else if (res == TXRX_QUEUED) {
- I802_DEBUG_INC(local->tx_handlers_queued);
- skb = NULL;
- }
-
- if (sta)
- sta_info_put(sta);
-
- return skb;
-}
-EXPORT_SYMBOL(ieee80211_get_buffered_bc);
-
static int __ieee80211_if_config(struct net_device *dev,
struct sk_buff *beacon,
struct ieee80211_tx_control *control)
@@ -2912,64 +1145,6 @@ int ieee80211_radar_status(struct ieee80211_hw *hw, int channel,
EXPORT_SYMBOL(ieee80211_radar_status);
-static ieee80211_txrx_result
-ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
-{
- struct ieee80211_local *local = tx->local;
- struct ieee80211_hw_mode *mode = tx->u.tx.mode;
- struct sk_buff *skb = tx->skb;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- u32 load = 0, hdrtime;
-
- /* 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 (mode->mode == MODE_IEEE80211A ||
- mode->mode == MODE_ATHEROS_TURBO ||
- mode->mode == MODE_ATHEROS_TURBOG ||
- (mode->mode == MODE_IEEE80211G &&
- tx->u.tx.rate->flags & IEEE80211_RATE_ERP))
- hdrtime = CHAN_UTIL_HDR_SHORT;
- else
- hdrtime = CHAN_UTIL_HDR_LONG;
-
- load = hdrtime;
- if (!is_multicast_ether_addr(hdr->addr1))
- load += hdrtime;
-
- if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
- load += 2 * hdrtime;
- else if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
- load += hdrtime;
-
- load += skb->len * tx->u.tx.rate->rate_inv;
-
- if (tx->u.tx.extra_frag) {
- int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- load += 2 * hdrtime;
- load += tx->u.tx.extra_frag[i]->len *
- tx->u.tx.rate->rate;
- }
- }
-
- /* 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 TXRX_CONTINUE;
-}
-
-
static void ieee80211_stat_refresh(unsigned long data)
{
struct ieee80211_local *local = (struct ieee80211_local *) data;
@@ -3365,26 +1540,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
}
EXPORT_SYMBOL(ieee80211_tx_status);
-/* TODO: implement register/unregister functions for adding TX/RX handlers
- * into ordered list */
-
-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_tkip_encrypt,
- ieee80211_tx_h_ccmp_encrypt,
- ieee80211_tx_h_wep_encrypt,
- ieee80211_tx_h_rate_ctrl,
- ieee80211_tx_h_misc,
- ieee80211_tx_h_load_stats,
- NULL
-};
-
int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
{