int present_fcs_len,
int radiotap_len)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))
return 1;
if (unlikely(skb->len < 16 + present_fcs_len + radiotap_len))
return 1;
- if (((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
- cpu_to_le16(IEEE80211_FTYPE_CTL)) &&
- ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
- cpu_to_le16(IEEE80211_STYPE_PSPOLL)) &&
- ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
- cpu_to_le16(IEEE80211_STYPE_BACK_REQ)))
+ if (ieee80211_is_ctl(hdr->frame_control) &&
+ !ieee80211_is_pspoll(hdr->frame_control) &&
+ !ieee80211_is_back_req(hdr->frame_control))
return 1;
return 0;
}
static void ieee80211_parse_qos(struct ieee80211_rx_data *rx)
{
- u8 *data = rx->skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
int tid;
/* does the frame have a qos control field? */
- if (WLAN_FC_IS_QOS_DATA(rx->fc)) {
- u8 *qc = data + ieee80211_get_hdrlen(rx->fc) - QOS_CONTROL_LEN;
+ if (ieee80211_is_data_qos(hdr->frame_control)) {
+ u8 *qc = ieee80211_get_qos_ctl(hdr);
/* frame has qos control */
- tid = qc[0] & QOS_CONTROL_TID_MASK;
- if (qc[0] & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
+ tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
+ if (*qc & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
rx->flags |= IEEE80211_RX_AMSDU;
else
rx->flags &= ~IEEE80211_RX_AMSDU;
} else {
- if (unlikely((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)) {
- /* Separate TID for management frames */
- tid = NUM_RX_DATA_QUEUES - 1;
- } else {
- /* no qos control present */
- tid = 0; /* 802.1d - Best Effort */
- }
+ /*
+ * IEEE 802.11-2007, 7.1.3.4.1 ("Sequence Number field"):
+ *
+ * Sequence numbers for management frames, QoS data
+ * frames with a broadcast/multicast address in the
+ * Address 1 field, and all non-QoS data frames sent
+ * by QoS STAs are assigned using an additional single
+ * modulo-4096 counter, [...]
+ *
+ * We also use that counter for non-QoS STAs.
+ */
+ tid = NUM_RX_DATA_QUEUES - 1;
}
rx->queue = tid;
static void ieee80211_verify_ip_alignment(struct ieee80211_rx_data *rx)
{
#ifdef CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
int hdrlen;
- if (!WLAN_FC_DATA_PRESENT(rx->fc))
+ if (!ieee80211_is_data_present(hdr->frame_control))
return;
/*
* header and the payload is not supported, the driver is required
* to move the 802.11 header further back in that case.
*/
- hdrlen = ieee80211_get_hdrlen(rx->fc);
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (rx->flags & IEEE80211_RX_AMSDU)
hdrlen += ETH_HLEN;
WARN_ON_ONCE(((unsigned long)(rx->skb->data + hdrlen)) & 3);
}
-static u32 ieee80211_rx_load_stats(struct ieee80211_local *local,
- struct sk_buff *skb,
- struct ieee80211_rx_status *status,
- struct ieee80211_rate *rate)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- u32 load = 0, hdrtime;
-
- /* 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 (status->band == IEEE80211_BAND_5GHZ ||
- (status->band == IEEE80211_BAND_5GHZ &&
- rate->flags & IEEE80211_RATE_ERP_G))
- hdrtime = CHAN_UTIL_HDR_SHORT;
- else
- hdrtime = CHAN_UTIL_HDR_LONG;
-
- load = hdrtime;
- if (!is_multicast_ether_addr(hdr->addr1))
- load += hdrtime;
-
- /* TODO: optimise again */
- load += skb->len * CHAN_UTIL_RATE_LCM / rate->bitrate;
-
- /* Divide channel_use by 8 to avoid wrapping around the counter */
- load >>= CHAN_UTIL_SHIFT;
-
- return load;
-}
-
/* rx handlers */
-static ieee80211_rx_result
-ieee80211_rx_h_if_stats(struct ieee80211_rx_data *rx)
-{
- if (rx->sta)
- rx->sta->channel_use_raw += rx->load;
- rx->sdata->channel_use_raw += rx->load;
- return RX_CONTINUE;
-}
-
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx)
{
struct ieee80211_local *local = rx->local;
static ieee80211_rx_result
ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
{
- int hdrlen = ieee80211_get_hdrlen(rx->fc);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
-
-#define msh_h_get(h, l) ((struct ieee80211s_hdr *) ((u8 *)h + l))
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
+ unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
- if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
- if (!((rx->fc & IEEE80211_FCTL_FROMDS) &&
- (rx->fc & IEEE80211_FCTL_TODS)))
+ if (ieee80211_is_data(hdr->frame_control)) {
+ if (!ieee80211_has_a4(hdr->frame_control))
return RX_DROP_MONITOR;
if (memcmp(hdr->addr4, rx->dev->dev_addr, ETH_ALEN) == 0)
return RX_DROP_MONITOR;
if (!rx->sta || sta_plink_state(rx->sta) != PLINK_ESTAB) {
struct ieee80211_mgmt *mgmt;
- if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT)
+ if (!ieee80211_is_mgmt(hdr->frame_control))
return RX_DROP_MONITOR;
- switch (rx->fc & IEEE80211_FCTL_STYPE) {
- case IEEE80211_STYPE_ACTION:
+ if (ieee80211_is_action(hdr->frame_control)) {
mgmt = (struct ieee80211_mgmt *)hdr;
if (mgmt->u.action.category != PLINK_CATEGORY)
return RX_DROP_MONITOR;
- /* fall through on else */
- case IEEE80211_STYPE_PROBE_REQ:
- case IEEE80211_STYPE_PROBE_RESP:
- case IEEE80211_STYPE_BEACON:
return RX_CONTINUE;
- break;
- default:
- return RX_DROP_MONITOR;
}
- } else if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
- is_multicast_ether_addr(hdr->addr1) &&
- mesh_rmc_check(hdr->addr4, msh_h_get(hdr, hdrlen), rx->dev))
+ if (ieee80211_is_probe_req(hdr->frame_control) ||
+ ieee80211_is_probe_resp(hdr->frame_control) ||
+ ieee80211_is_beacon(hdr->frame_control))
+ return RX_CONTINUE;
+
+ return RX_DROP_MONITOR;
+
+ }
+
+#define msh_h_get(h, l) ((struct ieee80211s_hdr *) ((u8 *)h + l))
+
+ if (ieee80211_is_data(hdr->frame_control) &&
+ is_multicast_ether_addr(hdr->addr1) &&
+ mesh_rmc_check(hdr->addr4, msh_h_get(hdr, hdrlen), rx->dev))
return RX_DROP_MONITOR;
#undef msh_h_get
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
{
- struct ieee80211_hdr *hdr;
-
- hdr = (struct ieee80211_hdr *) rx->skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
/* Drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.2.9) */
if (rx->sta && !is_multicast_ether_addr(hdr->addr1)) {
- if (unlikely(rx->fc & IEEE80211_FCTL_RETRY &&
+ if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
rx->sta->last_seq_ctrl[rx->queue] ==
hdr->seq_ctrl)) {
if (rx->flags & IEEE80211_RX_RA_MATCH) {
if (ieee80211_vif_is_mesh(&rx->sdata->vif))
return ieee80211_rx_mesh_check(rx);
- if (unlikely(((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA ||
- ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL &&
- (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)) &&
+ if (unlikely((ieee80211_is_data(hdr->frame_control) ||
+ ieee80211_is_pspoll(hdr->frame_control)) &&
rx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
(!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC)))) {
- if ((!(rx->fc & IEEE80211_FCTL_FROMDS) &&
- !(rx->fc & IEEE80211_FCTL_TODS) &&
- (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)
- || !(rx->flags & IEEE80211_RX_RA_MATCH)) {
+ if ((!ieee80211_has_fromds(hdr->frame_control) &&
+ !ieee80211_has_tods(hdr->frame_control) &&
+ ieee80211_is_data(hdr->frame_control)) ||
+ !(rx->flags & IEEE80211_RX_RA_MATCH)) {
/* Drop IBSS frames and frames for other hosts
* silently. */
return RX_DROP_MONITOR;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
int keyidx;
int hdrlen;
ieee80211_rx_result result = RX_DROP_UNUSABLE;
* possible.
*/
- if (!(rx->fc & IEEE80211_FCTL_PROTECTED))
+ if (!ieee80211_has_protected(hdr->frame_control))
return RX_CONTINUE;
/*
(rx->status->flag & RX_FLAG_IV_STRIPPED))
return RX_CONTINUE;
- hdrlen = ieee80211_get_hdrlen(rx->fc);
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (rx->skb->len < 8 + hdrlen)
return RX_DROP_UNUSABLE; /* TODO: count this? */
rx->key->tx_rx_count++;
/* TODO: add threshold stuff again */
} else {
-#ifdef CONFIG_MAC80211_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: RX protected frame,"
- " but have no key\n", rx->dev->name);
-#endif /* CONFIG_MAC80211_DEBUG */
return RX_DROP_MONITOR;
}
/* Check for weak IVs if possible */
if (rx->sta && rx->key->conf.alg == ALG_WEP &&
- ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
+ ieee80211_is_data(hdr->frame_control) &&
(!(rx->status->flag & RX_FLAG_IV_STRIPPED) ||
!(rx->status->flag & RX_FLAG_DECRYPTED)) &&
ieee80211_wep_is_weak_iv(rx->skb, rx->key))
sdata = sta->sdata;
- if (sdata->bss)
- atomic_inc(&sdata->bss->num_sta_ps);
+ atomic_inc(&sdata->bss->num_sta_ps);
set_and_clear_sta_flags(sta, WLAN_STA_PS, WLAN_STA_PSPOLL);
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "%s: STA %s aid %d enters power save mode\n",
struct sk_buff *skb;
int sent = 0;
struct ieee80211_sub_if_data *sdata;
- struct ieee80211_tx_packet_data *pkt_data;
+ struct ieee80211_tx_info *info;
DECLARE_MAC_BUF(mac);
sdata = sta->sdata;
- if (sdata->bss)
- atomic_dec(&sdata->bss->num_sta_ps);
+ atomic_dec(&sdata->bss->num_sta_ps);
clear_sta_flags(sta, WLAN_STA_PS | WLAN_STA_PSPOLL);
/* Send all buffered frames to the station */
while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
- pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+ info = IEEE80211_SKB_CB(skb);
sent++;
- pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
+ info->flags |= IEEE80211_TX_CTL_REQUEUE;
dev_queue_xmit(skb);
}
while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
- pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+ info = IEEE80211_SKB_CB(skb);
local->total_ps_buffered--;
sent++;
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
"since STA not sleeping anymore\n", dev->name,
print_mac(mac, sta->addr), sta->aid);
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
- pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
+ info->flags |= IEEE80211_TX_CTL_REQUEUE;
dev_queue_xmit(skb);
}
return sent;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
{
struct sta_info *sta = rx->sta;
struct net_device *dev = rx->dev;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
if (!sta)
return RX_CONTINUE;
sta->last_qual = rx->status->qual;
sta->last_noise = rx->status->noise;
- if (!(rx->fc & IEEE80211_FCTL_MOREFRAGS)) {
+ if (!ieee80211_has_morefrags(hdr->frame_control) &&
+ (rx->sdata->vif.type == IEEE80211_IF_TYPE_AP ||
+ rx->sdata->vif.type == IEEE80211_IF_TYPE_VLAN)) {
/* Change STA power saving mode only in the end of a frame
* exchange sequence */
if (test_sta_flags(sta, WLAN_STA_PS) &&
- !(rx->fc & IEEE80211_FCTL_PM))
+ !ieee80211_has_pm(hdr->frame_control))
rx->sent_ps_buffered += ap_sta_ps_end(dev, sta);
else if (!test_sta_flags(sta, WLAN_STA_PS) &&
- (rx->fc & IEEE80211_FCTL_PM))
+ ieee80211_has_pm(hdr->frame_control))
ap_sta_ps_start(dev, sta);
}
/* Drop data::nullfunc frames silently, since they are used only to
* control station power saving mode. */
- if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
- (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_NULLFUNC) {
+ if (ieee80211_is_nullfunc(hdr->frame_control)) {
I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);
/* Update counter and free packet here to avoid counting this
* as a dropped packed. */
sdata->fragment_next = 0;
if (!skb_queue_empty(&entry->skb_list)) {
-#ifdef CONFIG_MAC80211_DEBUG
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
struct ieee80211_hdr *hdr =
(struct ieee80211_hdr *) entry->skb_list.next->data;
DECLARE_MAC_BUF(mac);
jiffies - entry->first_frag_time, entry->seq,
entry->last_frag, print_mac(mac, hdr->addr1),
print_mac(mac2, hdr->addr2));
-#endif /* CONFIG_MAC80211_DEBUG */
+#endif
__skb_queue_purge(&entry->skb_list);
}
return NULL;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr;
break;
}
rpn = rx->key->u.ccmp.rx_pn[rx->queue];
- if (memcmp(pn, rpn, CCMP_PN_LEN) != 0) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: defrag: CCMP PN not "
- "sequential A2=%s"
- " PN=%02x%02x%02x%02x%02x%02x "
- "(expected %02x%02x%02x%02x%02x%02x)\n",
- rx->dev->name, print_mac(mac, hdr->addr2),
- rpn[0], rpn[1], rpn[2], rpn[3], rpn[4],
- rpn[5], pn[0], pn[1], pn[2], pn[3],
- pn[4], pn[5]);
+ if (memcmp(pn, rpn, CCMP_PN_LEN))
return RX_DROP_UNUSABLE;
- }
memcpy(entry->last_pn, pn, CCMP_PN_LEN);
}
return RX_CONTINUE;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
* have nothing buffered for it?
*/
printk(KERN_DEBUG "%s: STA %s sent PS Poll even "
- "though there is no buffered frames for it\n",
+ "though there are no buffered frames for it\n",
rx->dev->name, print_mac(mac, rx->sta->addr));
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
}
return RX_QUEUED;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_remove_qos_control(struct ieee80211_rx_data *rx)
{
- u16 fc = rx->fc;
u8 *data = rx->skb->data;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)data;
- if (!WLAN_FC_IS_QOS_DATA(fc))
+ if (!ieee80211_is_data_qos(hdr->frame_control))
return RX_CONTINUE;
/* remove the qos control field, update frame type and meta-data */
- memmove(data + 2, data, ieee80211_get_hdrlen(fc) - 2);
- hdr = (struct ieee80211_hdr *) skb_pull(rx->skb, 2);
+ memmove(data + IEEE80211_QOS_CTL_LEN, data,
+ ieee80211_hdrlen(hdr->frame_control) - IEEE80211_QOS_CTL_LEN);
+ hdr = (struct ieee80211_hdr *)skb_pull(rx->skb, IEEE80211_QOS_CTL_LEN);
/* change frame type to non QOS */
- rx->fc = fc &= ~IEEE80211_STYPE_QOS_DATA;
- hdr->frame_control = cpu_to_le16(fc);
+ rx->fc &= ~IEEE80211_STYPE_QOS_DATA;
+ hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
return RX_CONTINUE;
}
ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx)
{
if (unlikely(!rx->sta ||
- !test_sta_flags(rx->sta, WLAN_STA_AUTHORIZED))) {
-#ifdef CONFIG_MAC80211_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: dropped frame "
- "(unauthorized port)\n", rx->dev->name);
-#endif /* CONFIG_MAC80211_DEBUG */
+ !test_sta_flags(rx->sta, WLAN_STA_AUTHORIZED)))
return -EACCES;
- }
return 0;
}
u16 fc, hdrlen, ethertype;
u8 *payload;
u8 dst[ETH_ALEN];
- u8 src[ETH_ALEN];
+ u8 src[ETH_ALEN] __aligned(2);
struct sk_buff *skb = rx->skb;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
DECLARE_MAC_BUF(mac);
hdrlen = ieee80211_get_hdrlen(fc);
- if (ieee80211_vif_is_mesh(&sdata->vif)) {
- int meshhdrlen = ieee80211_get_mesh_hdrlen(
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ hdrlen += ieee80211_get_mesh_hdrlen(
(struct ieee80211s_hdr *) (skb->data + hdrlen));
- /* Copy on cb:
- * - mesh header: to be used for mesh forwarding
- * decision. It will also be used as mesh header template at
- * tx.c:ieee80211_subif_start_xmit() if interface
- * type is mesh and skb->pkt_type == PACKET_OTHERHOST
- * - ta: to be used if a RERR needs to be sent.
- */
- memcpy(skb->cb, skb->data + hdrlen, meshhdrlen);
- memcpy(MESH_PREQ(skb), hdr->addr2, ETH_ALEN);
- hdrlen += meshhdrlen;
- }
/* convert IEEE 802.11 header + possible LLC headers into Ethernet
* header
memcpy(src, hdr->addr2, ETH_ALEN);
if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_AP &&
- sdata->vif.type != IEEE80211_IF_TYPE_VLAN)) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: dropped ToDS frame "
- "(BSSID=%s SA=%s DA=%s)\n",
- dev->name,
- print_mac(mac, hdr->addr1),
- print_mac(mac2, hdr->addr2),
- print_mac(mac3, hdr->addr3));
+ sdata->vif.type != IEEE80211_IF_TYPE_VLAN))
return -1;
- }
break;
case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
/* RA TA DA SA */
memcpy(src, hdr->addr4, ETH_ALEN);
if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_WDS &&
- sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: dropped FromDS&ToDS "
- "frame (RA=%s TA=%s DA=%s SA=%s)\n",
- rx->dev->name,
- print_mac(mac, hdr->addr1),
- print_mac(mac2, hdr->addr2),
- print_mac(mac3, hdr->addr3),
- print_mac(mac4, hdr->addr4));
+ sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT))
return -1;
- }
break;
case IEEE80211_FCTL_FROMDS:
/* DA BSSID SA */
memcpy(dst, hdr->addr1, ETH_ALEN);
memcpy(src, hdr->addr2, ETH_ALEN);
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: dropped IBSS frame "
- "(DA=%s SA=%s BSSID=%s)\n",
- dev->name,
- print_mac(mac, hdr->addr1),
- print_mac(mac2, hdr->addr2),
- print_mac(mac3, hdr->addr3));
- }
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
return -1;
- }
break;
}
- if (unlikely(skb->len - hdrlen < 8)) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: RX too short data frame "
- "payload\n", dev->name);
- }
+ if (unlikely(skb->len - hdrlen < 8))
return -1;
- }
payload = skb->data + hdrlen;
ethertype = (payload[6] << 8) | payload[7];
*/
static bool ieee80211_frame_allowed(struct ieee80211_rx_data *rx)
{
- static const u8 pae_group_addr[ETH_ALEN]
+ static const u8 pae_group_addr[ETH_ALEN] __aligned(2)
= { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x03 };
struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;
}
}
- /* Mesh forwarding */
- if (ieee80211_vif_is_mesh(&sdata->vif)) {
- u8 *mesh_ttl = &((struct ieee80211s_hdr *)skb->cb)->ttl;
- (*mesh_ttl)--;
-
- if (is_multicast_ether_addr(skb->data)) {
- if (*mesh_ttl > 0) {
- xmit_skb = skb_copy(skb, GFP_ATOMIC);
- if (!xmit_skb && net_ratelimit())
- printk(KERN_DEBUG "%s: failed to clone "
- "multicast frame\n", dev->name);
- else
- xmit_skb->pkt_type = PACKET_OTHERHOST;
- } else
- IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta,
- dropped_frames_ttl);
- } else if (skb->pkt_type != PACKET_OTHERHOST &&
- compare_ether_addr(dev->dev_addr, skb->data) != 0) {
- if (*mesh_ttl == 0) {
- IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta,
- dropped_frames_ttl);
- dev_kfree_skb(skb);
- skb = NULL;
- } else {
- xmit_skb = skb;
- xmit_skb->pkt_type = PACKET_OTHERHOST;
- if (!(dev->flags & IFF_PROMISC))
- skb = NULL;
- }
- }
- }
-
if (skb) {
/* deliver to local stack */
skb->protocol = eth_type_trans(skb, dev);
}
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
{
struct net_device *dev = rx->dev;
padding = ((4 - subframe_len) & 0x3);
/* the last MSDU has no padding */
- if (subframe_len > remaining) {
- printk(KERN_DEBUG "%s: wrong buffer size", dev->name);
+ if (subframe_len > remaining)
return RX_DROP_UNUSABLE;
- }
skb_pull(skb, sizeof(struct ethhdr));
/* if last subframe reuse skb */
eth = (struct ethhdr *) skb_pull(skb, ntohs(len) +
padding);
if (!eth) {
- printk(KERN_DEBUG "%s: wrong buffer size ",
- dev->name);
dev_kfree_skb(frame);
return RX_DROP_UNUSABLE;
}
return RX_QUEUED;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
+ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
+{
+ struct ieee80211_hdr *hdr;
+ struct ieee80211s_hdr *mesh_hdr;
+ unsigned int hdrlen;
+ struct sk_buff *skb = rx->skb, *fwd_skb;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+
+ if (!ieee80211_is_data(hdr->frame_control))
+ return RX_CONTINUE;
+
+ if (!mesh_hdr->ttl)
+ /* illegal frame */
+ return RX_DROP_MONITOR;
+
+ if (compare_ether_addr(rx->dev->dev_addr, hdr->addr3) == 0)
+ return RX_CONTINUE;
+
+ mesh_hdr->ttl--;
+
+ if (rx->flags & IEEE80211_RX_RA_MATCH) {
+ if (!mesh_hdr->ttl)
+ IEEE80211_IFSTA_MESH_CTR_INC(&rx->sdata->u.sta,
+ dropped_frames_ttl);
+ else {
+ struct ieee80211_hdr *fwd_hdr;
+ fwd_skb = skb_copy(skb, GFP_ATOMIC);
+
+ if (!fwd_skb && net_ratelimit())
+ printk(KERN_DEBUG "%s: failed to clone mesh frame\n",
+ rx->dev->name);
+
+ fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data;
+ /*
+ * Save TA to addr1 to send TA a path error if a
+ * suitable next hop is not found
+ */
+ memcpy(fwd_hdr->addr1, fwd_hdr->addr2, ETH_ALEN);
+ memcpy(fwd_hdr->addr2, rx->dev->dev_addr, ETH_ALEN);
+ fwd_skb->dev = rx->local->mdev;
+ fwd_skb->iif = rx->dev->ifindex;
+ dev_queue_xmit(fwd_skb);
+ }
+ }
+
+ if (is_multicast_ether_addr(hdr->addr3) ||
+ rx->dev->flags & IFF_PROMISC)
+ return RX_CONTINUE;
+ else
+ return RX_DROP_MONITOR;
+}
+
+
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
{
struct net_device *dev = rx->dev;
return RX_QUEUED;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
{
struct ieee80211_local *local = rx->local;
struct ieee80211_hw *hw = &local->hw;
struct sk_buff *skb = rx->skb;
- struct ieee80211_bar *bar = (struct ieee80211_bar *) skb->data;
+ struct ieee80211_bar *bar = (struct ieee80211_bar *)skb->data;
struct tid_ampdu_rx *tid_agg_rx;
u16 start_seq_num;
u16 tid;
- if (likely((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL))
+ if (likely(!ieee80211_is_ctl(bar->frame_control)))
return RX_CONTINUE;
- if ((rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BACK_REQ) {
+ if (ieee80211_is_back_req(bar->frame_control)) {
if (!rx->sta)
return RX_CONTINUE;
tid = le16_to_cpu(bar->control) >> 12;
return RX_CONTINUE;
}
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_hdr *hdr,
struct ieee80211_rx_data *rx)
{
- int keyidx, hdrlen;
+ int keyidx;
+ unsigned int hdrlen;
DECLARE_MAC_BUF(mac);
DECLARE_MAC_BUF(mac2);
- hdrlen = ieee80211_get_hdrlen_from_skb(rx->skb);
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (rx->skb->len >= hdrlen + 4)
keyidx = rx->skb->data[hdrlen + 3] >> 6;
else
keyidx = -1;
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: TKIP hwaccel reported Michael MIC "
- "failure from %s to %s keyidx=%d\n",
- dev->name, print_mac(mac, hdr->addr2),
- print_mac(mac2, hdr->addr1), keyidx);
-
if (!rx->sta) {
/*
* Some hardware seem to generate incorrect Michael MIC
* reports; ignore them to avoid triggering countermeasures.
*/
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
- "error for unknown address %s\n",
- dev->name, print_mac(mac, hdr->addr2));
goto ignore;
}
- if (!(rx->fc & IEEE80211_FCTL_PROTECTED)) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
- "error for a frame with no PROTECTED flag (src "
- "%s)\n", dev->name, print_mac(mac, hdr->addr2));
+ if (!ieee80211_has_protected(hdr->frame_control))
goto ignore;
- }
if (rx->sdata->vif.type == IEEE80211_IF_TYPE_AP && keyidx) {
/*
* group keys and only the AP is sending real multicast
* frames in the BSS.
*/
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: ignored Michael MIC error for "
- "a frame with non-zero keyidx (%d)"
- " (src %s)\n", dev->name, keyidx,
- print_mac(mac, hdr->addr2));
goto ignore;
}
- if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
- ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
- (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
- "error for a frame that cannot be encrypted "
- "(fc=0x%04x) (src %s)\n",
- dev->name, rx->fc, print_mac(mac, hdr->addr2));
+ if (!ieee80211_is_data(hdr->frame_control) &&
+ !ieee80211_is_auth(hdr->frame_control))
goto ignore;
- }
mac80211_ev_michael_mic_failure(rx->dev, keyidx, hdr);
ignore:
dev_kfree_skb(skb);
}
-typedef ieee80211_rx_result (*ieee80211_rx_handler)(struct ieee80211_rx_data *);
-static ieee80211_rx_handler ieee80211_rx_handlers[] =
-{
- ieee80211_rx_h_if_stats,
- ieee80211_rx_h_passive_scan,
- ieee80211_rx_h_check,
- ieee80211_rx_h_decrypt,
- ieee80211_rx_h_sta_process,
- ieee80211_rx_h_defragment,
- ieee80211_rx_h_ps_poll,
- ieee80211_rx_h_michael_mic_verify,
- /* this must be after decryption - so header is counted in MPDU mic
- * must be before pae and data, so QOS_DATA format frames
- * are not passed to user space by these functions
- */
- ieee80211_rx_h_remove_qos_control,
- ieee80211_rx_h_amsdu,
- ieee80211_rx_h_data,
- ieee80211_rx_h_ctrl,
- ieee80211_rx_h_mgmt,
- NULL
-};
static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
struct ieee80211_rx_data *rx,
struct sk_buff *skb)
{
- ieee80211_rx_handler *handler;
ieee80211_rx_result res = RX_DROP_MONITOR;
rx->skb = skb;
rx->sdata = sdata;
rx->dev = sdata->dev;
- for (handler = ieee80211_rx_handlers; *handler != NULL; handler++) {
- res = (*handler)(rx);
-
- switch (res) {
- case RX_CONTINUE:
- continue;
- case RX_DROP_UNUSABLE:
- case RX_DROP_MONITOR:
- I802_DEBUG_INC(sdata->local->rx_handlers_drop);
- if (rx->sta)
- rx->sta->rx_dropped++;
- break;
- case RX_QUEUED:
- I802_DEBUG_INC(sdata->local->rx_handlers_queued);
- break;
- }
- break;
- }
-
+#define CALL_RXH(rxh) \
+ do { \
+ res = rxh(rx); \
+ if (res != RX_CONTINUE) \
+ goto rxh_done; \
+ } while (0);
+
+ CALL_RXH(ieee80211_rx_h_passive_scan)
+ CALL_RXH(ieee80211_rx_h_check)
+ CALL_RXH(ieee80211_rx_h_decrypt)
+ CALL_RXH(ieee80211_rx_h_sta_process)
+ CALL_RXH(ieee80211_rx_h_defragment)
+ CALL_RXH(ieee80211_rx_h_ps_poll)
+ CALL_RXH(ieee80211_rx_h_michael_mic_verify)
+ /* must be after MMIC verify so header is counted in MPDU mic */
+ CALL_RXH(ieee80211_rx_h_remove_qos_control)
+ CALL_RXH(ieee80211_rx_h_amsdu)
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ CALL_RXH(ieee80211_rx_h_mesh_fwding);
+ CALL_RXH(ieee80211_rx_h_data)
+ CALL_RXH(ieee80211_rx_h_ctrl)
+ CALL_RXH(ieee80211_rx_h_mgmt)
+
+#undef CALL_RXH
+
+ rxh_done:
switch (res) {
- case RX_CONTINUE:
case RX_DROP_MONITOR:
+ I802_DEBUG_INC(sdata->local->rx_handlers_drop);
+ if (rx->sta)
+ rx->sta->rx_dropped++;
+ /* fall through */
+ case RX_CONTINUE:
ieee80211_rx_cooked_monitor(rx);
break;
case RX_DROP_UNUSABLE:
+ I802_DEBUG_INC(sdata->local->rx_handlers_drop);
+ if (rx->sta)
+ rx->sta->rx_dropped++;
dev_kfree_skb(rx->skb);
break;
+ case RX_QUEUED:
+ I802_DEBUG_INC(sdata->local->rx_handlers_queued);
+ break;
}
}
case IEEE80211_IF_TYPE_IBSS:
if (!bssid)
return 0;
- if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
- (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)
+ if (ieee80211_is_beacon(hdr->frame_control)) {
+ if (!rx->sta)
+ rx->sta = ieee80211_ibss_add_sta(sdata->dev,
+ rx->skb, bssid, hdr->addr2,
+ BIT(rx->status->rate_idx));
return 1;
+ }
else if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
if (!(rx->flags & IEEE80211_RX_IN_SCAN))
return 0;
rx->flags &= ~IEEE80211_RX_RA_MATCH;
} else if (!rx->sta)
rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb,
- bssid, hdr->addr2);
+ bssid, hdr->addr2,
+ BIT(rx->status->rate_idx));
break;
case IEEE80211_IF_TYPE_MESH_POINT:
if (!multicast &&
return 0;
rx->flags &= ~IEEE80211_RX_RA_MATCH;
}
- if (sdata->dev == sdata->local->mdev &&
- !(rx->flags & IEEE80211_RX_IN_SCAN))
- /* do not receive anything via
- * master device when not scanning */
- return 0;
break;
case IEEE80211_IF_TYPE_WDS:
- if (bssid ||
- (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+ if (bssid || !ieee80211_is_data(hdr->frame_control))
return 0;
if (compare_ether_addr(sdata->u.wds.remote_addr, hdr->addr2))
return 0;
static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_rx_status *status,
- u32 load,
struct ieee80211_rate *rate)
{
struct ieee80211_local *local = hw_to_local(hw);
rx.local = local;
rx.status = status;
- rx.load = load;
rx.rate = rate;
rx.fc = le16_to_cpu(hdr->frame_control);
type = rx.fc & IEEE80211_FCTL_FTYPE;
if (!skb_new) {
if (net_ratelimit())
printk(KERN_DEBUG "%s: failed to copy "
- "multicast frame for %s",
+ "multicast frame for %s\n",
wiphy_name(local->hw.wiphy),
prev->dev->name);
continue;
struct ieee80211_rx_status status;
u16 head_seq_num, buf_size;
int index;
- u32 pkt_load;
struct ieee80211_supported_band *sband;
struct ieee80211_rate *rate;
sizeof(status));
sband = local->hw.wiphy->bands[status.band];
rate = &sband->bitrates[status.rate_idx];
- pkt_load = ieee80211_rx_load_stats(local,
- tid_agg_rx->reorder_buf[index],
- &status, rate);
__ieee80211_rx_handle_packet(hw,
tid_agg_rx->reorder_buf[index],
- &status, pkt_load, rate);
+ &status, rate);
tid_agg_rx->stored_mpdu_num--;
tid_agg_rx->reorder_buf[index] = NULL;
}
sizeof(status));
sband = local->hw.wiphy->bands[status.band];
rate = &sband->bitrates[status.rate_idx];
- pkt_load = ieee80211_rx_load_stats(local,
- tid_agg_rx->reorder_buf[index],
- &status, rate);
__ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index],
- &status, pkt_load, rate);
+ &status, rate);
tid_agg_rx->stored_mpdu_num--;
tid_agg_rx->reorder_buf[index] = NULL;
tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct sta_info *sta;
struct tid_ampdu_rx *tid_agg_rx;
- u16 fc, sc;
+ u16 sc;
u16 mpdu_seq_num;
- u8 ret = 0, *qc;
+ u8 ret = 0;
int tid;
sta = sta_info_get(local, hdr->addr2);
if (!sta)
return ret;
- fc = le16_to_cpu(hdr->frame_control);
-
/* filter the QoS data rx stream according to
* STA/TID and check if this STA/TID is on aggregation */
- if (!WLAN_FC_IS_QOS_DATA(fc))
+ if (!ieee80211_is_data_qos(hdr->frame_control))
goto end_reorder;
- qc = skb->data + ieee80211_get_hdrlen(fc) - QOS_CONTROL_LEN;
- tid = qc[0] & QOS_CONTROL_TID_MASK;
+ tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
goto end_reorder;
tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
- /* null data frames are excluded */
- if (unlikely(fc & IEEE80211_STYPE_NULLFUNC))
+ /* qos null data frames are excluded */
+ if (unlikely(hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_NULLFUNC)))
goto end_reorder;
/* new un-ordered ampdu frame - process it */
struct ieee80211_rx_status *status)
{
struct ieee80211_local *local = hw_to_local(hw);
- u32 pkt_load;
struct ieee80211_rate *rate = NULL;
struct ieee80211_supported_band *sband;
return;
}
- pkt_load = ieee80211_rx_load_stats(local, skb, status, rate);
- local->channel_use_raw += pkt_load;
-
if (!ieee80211_rx_reorder_ampdu(local, skb))
- __ieee80211_rx_handle_packet(hw, skb, status, pkt_load, rate);
+ __ieee80211_rx_handle_packet(hw, skb, status, rate);
rcu_read_unlock();
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff