static u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
struct tid_ampdu_rx *tid_agg_rx,
struct sk_buff *skb,
- struct ieee80211_rx_status *status,
u16 mpdu_seq_num,
int bar_req);
/*
return skb;
}
-static inline int should_drop_frame(struct ieee80211_rx_status *status,
- struct sk_buff *skb,
+static inline int should_drop_frame(struct sk_buff *skb,
int present_fcs_len,
int radiotap_len)
{
+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))
static void
ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
struct sk_buff *skb,
- struct ieee80211_rx_status *status,
struct ieee80211_rate *rate,
int rtap_len)
{
+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_radiotap_header *rthdr;
unsigned char *pos;
*/
static struct sk_buff *
ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
- struct ieee80211_rx_status *status,
struct ieee80211_rate *rate)
{
+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(origskb);
struct ieee80211_sub_if_data *sdata;
int needed_headroom = 0;
struct sk_buff *skb, *skb2;
present_fcs_len = FCS_LEN;
if (!local->monitors) {
- if (should_drop_frame(status, origskb, present_fcs_len,
- rtap_len)) {
+ if (should_drop_frame(origskb, present_fcs_len, rtap_len)) {
dev_kfree_skb(origskb);
return NULL;
}
return remove_monitor_info(local, origskb, rtap_len);
}
- if (should_drop_frame(status, origskb, present_fcs_len, rtap_len)) {
+ if (should_drop_frame(origskb, present_fcs_len, rtap_len)) {
/* only need to expand headroom if necessary */
skb = origskb;
origskb = NULL;
/* if necessary, prepend radiotap information */
if (!(status->flag & RX_FLAG_RADIOTAP))
- ieee80211_add_rx_radiotap_header(local, skb, status, rate,
+ ieee80211_add_rx_radiotap_header(local, skb, rate,
needed_headroom);
skb_reset_mac_header(skb);
struct ieee80211_local *local = rx->local;
struct sk_buff *skb = rx->skb;
- if (unlikely(local->hw_scanning))
- return ieee80211_scan_rx(rx->sdata, skb, rx->status);
+ if (unlikely(test_bit(SCAN_HW_SCANNING, &local->scanning)))
+ return ieee80211_scan_rx(rx->sdata, skb);
- if (unlikely(local->sw_scanning)) {
+ if (unlikely(test_bit(SCAN_SW_SCANNING, &local->scanning) &&
+ (rx->flags & IEEE80211_RX_IN_SCAN))) {
/* drop all the other packets during a software scan anyway */
- if (ieee80211_scan_rx(rx->sdata, skb, rx->status)
- != RX_QUEUED)
+ if (ieee80211_scan_rx(rx->sdata, skb) != RX_QUEUED)
dev_kfree_skb(skb);
return RX_QUEUED;
}
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ char *dev_addr = rx->dev->dev_addr;
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 (is_multicast_ether_addr(hdr->addr1)) {
+ if (ieee80211_has_tods(hdr->frame_control) ||
+ !ieee80211_has_fromds(hdr->frame_control))
+ return RX_DROP_MONITOR;
+ if (memcmp(hdr->addr3, dev_addr, ETH_ALEN) == 0)
+ return RX_DROP_MONITOR;
+ } else {
+ if (!ieee80211_has_a4(hdr->frame_control))
+ return RX_DROP_MONITOR;
+ if (memcmp(hdr->addr4, dev_addr, ETH_ALEN) == 0)
+ return RX_DROP_MONITOR;
+ }
}
/* If there is not an established peer link and this is not a peer link
if (ieee80211_is_data(hdr->frame_control) &&
is_multicast_ether_addr(hdr->addr1) &&
- mesh_rmc_check(hdr->addr4, msh_h_get(hdr, hdrlen), rx->sdata))
+ mesh_rmc_check(hdr->addr3, msh_h_get(hdr, hdrlen), rx->sdata))
return RX_DROP_MONITOR;
#undef msh_h_get
struct ieee80211_local *local = sdata->local;
atomic_inc(&sdata->bss->num_sta_ps);
- set_and_clear_sta_flags(sta, WLAN_STA_PS, WLAN_STA_PSPOLL);
+ set_sta_flags(sta, WLAN_STA_PS);
drv_sta_notify(local, &sdata->vif, STA_NOTIFY_SLEEP, &sta->sta);
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "%s: STA %pM aid %d enters power save mode\n",
atomic_dec(&sdata->bss->num_sta_ps);
- clear_sta_flags(sta, WLAN_STA_PS | WLAN_STA_PSPOLL);
+ clear_sta_flags(sta, WLAN_STA_PS);
drv_sta_notify(local, &sdata->vif, STA_NOTIFY_AWAKE, &sta->sta);
if (!skb_queue_empty(&sta->ps_tx_buf))
if (!sta)
return RX_CONTINUE;
- /* Update last_rx only for IBSS packets which are for the current
- * BSSID to avoid keeping the current IBSS network alive in cases where
- * other STAs are using different BSSID. */
+ /*
+ * Update last_rx only for IBSS packets which are for the current
+ * BSSID to avoid keeping the current IBSS network alive in cases
+ * where other STAs start using different BSSID.
+ */
if (rx->sdata->vif.type == NL80211_IFTYPE_ADHOC) {
u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
NL80211_IFTYPE_ADHOC);
if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0)
sta->last_rx = jiffies;
- } else
- if (!is_multicast_ether_addr(hdr->addr1) ||
- rx->sdata->vif.type == NL80211_IFTYPE_STATION) {
- /* Update last_rx only for unicast frames in order to prevent
- * the Probe Request frames (the only broadcast frames from a
- * STA in infrastructure mode) from keeping a connection alive.
+ } else if (!is_multicast_ether_addr(hdr->addr1)) {
+ /*
* Mesh beacons will update last_rx when if they are found to
* match the current local configuration when processed.
*/
- if (rx->sdata->vif.type == NL80211_IFTYPE_STATION &&
- ieee80211_is_beacon(hdr->frame_control)) {
- rx->sdata->u.mgd.last_beacon = jiffies;
- } else
- sta->last_rx = jiffies;
+ sta->last_rx = jiffies;
}
if (!(rx->flags & IEEE80211_RX_RA_MATCH))
skb_queue_empty(&rx->sta->ps_tx_buf);
if (skb) {
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr =
(struct ieee80211_hdr *) skb->data;
/*
- * Tell TX path to send one frame even though the STA may
+ * Tell TX path to send this frame even though the STA may
* still remain is PS mode after this frame exchange.
*/
- set_sta_flags(rx->sta, WLAN_STA_PSPOLL);
+ info->flags |= IEEE80211_TX_CTL_PSPOLL_RESPONSE;
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "STA %pM aid %d: PS Poll (entries after %d)\n",
else
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
- dev_queue_xmit(skb);
+ ieee80211_add_pending_skb(rx->local, skb);
if (no_pending_pkts)
sta_info_clear_tim_bit(rx->sta);
struct ieee80211s_hdr *mesh_hdr;
unsigned int hdrlen;
struct sk_buff *skb = rx->skb, *fwd_skb;
+ struct ieee80211_local *local = rx->local;
+ struct ieee80211_sub_if_data *sdata;
hdr = (struct ieee80211_hdr *) skb->data;
hdrlen = ieee80211_hdrlen(hdr->frame_control);
mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+ sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
if (!ieee80211_is_data(hdr->frame_control))
return RX_CONTINUE;
/* illegal frame */
return RX_DROP_MONITOR;
- if (mesh_hdr->flags & MESH_FLAGS_AE_A5_A6){
- struct ieee80211_sub_if_data *sdata;
+ if (!is_multicast_ether_addr(hdr->addr1) &&
+ (mesh_hdr->flags & MESH_FLAGS_AE_A5_A6)) {
struct mesh_path *mppath;
- sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
rcu_read_lock();
mppath = mpp_path_lookup(mesh_hdr->eaddr2, sdata);
if (!mppath) {
rcu_read_unlock();
}
- if (compare_ether_addr(rx->dev->dev_addr, hdr->addr3) == 0)
+ /* Frame has reached destination. Don't forward */
+ if (!is_multicast_ether_addr(hdr->addr1) &&
+ compare_ether_addr(rx->dev->dev_addr, hdr->addr3) == 0)
return RX_CONTINUE;
mesh_hdr->ttl--;
dropped_frames_ttl);
else {
struct ieee80211_hdr *fwd_hdr;
+ struct ieee80211_tx_info *info;
+
fwd_skb = skb_copy(skb, GFP_ATOMIC);
if (!fwd_skb && net_ratelimit())
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);
+ info = IEEE80211_SKB_CB(fwd_skb);
+ memset(info, 0, sizeof(*info));
+ info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+ info->control.vif = &rx->sdata->vif;
+ ieee80211_select_queue(local, fwd_skb);
+ if (is_multicast_ether_addr(fwd_hdr->addr1))
+ IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh,
+ fwded_mcast);
+ else {
+ int err;
+ /*
+ * 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);
+ err = mesh_nexthop_lookup(fwd_skb, sdata);
+ /* Failed to immediately resolve next hop:
+ * fwded frame was dropped or will be added
+ * later to the pending skb queue. */
+ if (err)
+ return RX_DROP_MONITOR;
+
+ IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh,
+ fwded_unicast);
+ }
+ IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh,
+ fwded_frames);
+ ieee80211_add_pending_skb(local, fwd_skb);
}
}
- if (is_multicast_ether_addr(hdr->addr3) ||
+ if (is_multicast_ether_addr(hdr->addr1) ||
rx->dev->flags & IFF_PROMISC)
return RX_CONTINUE;
else
/* manage reordering buffer according to requested */
/* sequence number */
rcu_read_lock();
- ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, NULL, NULL,
+ ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, NULL,
start_seq_num, 1);
rcu_read_unlock();
return RX_DROP_UNUSABLE;
if (compare_ether_addr(mgmt->sa, sdata->u.mgd.bssid) != 0 ||
compare_ether_addr(mgmt->bssid, sdata->u.mgd.bssid) != 0) {
- /* Not from the current AP. */
- return;
- }
-
- if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATE) {
- /* Association in progress; ignore SA Query */
+ /* Not from the current AP or not associated yet. */
return;
}
struct ieee80211_local *local = rx->local;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;
- struct ieee80211_bss *bss;
int len = rx->skb->len;
if (!ieee80211_is_action(mgmt->frame_control))
if (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN))
return RX_DROP_MONITOR;
- bss = ieee80211_rx_bss_get(local, sdata->u.mgd.bssid,
- local->hw.conf.channel->center_freq,
- sdata->u.mgd.ssid,
- sdata->u.mgd.ssid_len);
- if (!bss)
- return RX_DROP_MONITOR;
-
- ieee80211_sta_process_chanswitch(sdata,
- &mgmt->u.action.u.chan_switch.sw_elem, bss);
- ieee80211_rx_bss_put(local, bss);
- break;
+ return ieee80211_sta_rx_mgmt(sdata, rx->skb);
}
break;
case WLAN_CATEGORY_SA_QUERY:
return RX_DROP_MONITOR;
if (ieee80211_vif_is_mesh(&sdata->vif))
- return ieee80211_mesh_rx_mgmt(sdata, rx->skb, rx->status);
+ return ieee80211_mesh_rx_mgmt(sdata, rx->skb);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
- return ieee80211_ibss_rx_mgmt(sdata, rx->skb, rx->status);
+ return ieee80211_ibss_rx_mgmt(sdata, rx->skb);
if (sdata->vif.type == NL80211_IFTYPE_STATION)
- return ieee80211_sta_rx_mgmt(sdata, rx->skb, rx->status);
+ return ieee80211_sta_rx_mgmt(sdata, rx->skb);
return RX_DROP_MONITOR;
}
-static void ieee80211_rx_michael_mic_report(struct net_device *dev,
- struct ieee80211_hdr *hdr,
+static void ieee80211_rx_michael_mic_report(struct ieee80211_hdr *hdr,
struct ieee80211_rx_data *rx)
{
int keyidx;
!ieee80211_is_auth(hdr->frame_control))
goto ignore;
- mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr, NULL);
+ mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr, NULL,
+ GFP_ATOMIC);
ignore:
dev_kfree_skb(rx->skb);
rx->skb = NULL;
case NL80211_IFTYPE_STATION:
if (!bssid)
return 0;
- if (!ieee80211_bssid_match(bssid, sdata->u.mgd.bssid)) {
- if (!(rx->flags & IEEE80211_RX_IN_SCAN))
- return 0;
- rx->flags &= ~IEEE80211_RX_RA_MATCH;
- } else if (!multicast &&
- compare_ether_addr(sdata->dev->dev_addr,
- hdr->addr1) != 0) {
+ if (!multicast &&
+ compare_ether_addr(sdata->dev->dev_addr, hdr->addr1) != 0) {
if (!(sdata->dev->flags & IFF_PROMISC))
return 0;
rx->flags &= ~IEEE80211_RX_RA_MATCH;
*/
static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
struct sk_buff *skb,
- struct ieee80211_rx_status *status,
struct ieee80211_rate *rate)
{
+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
struct ieee80211_hdr *hdr;
}
if ((status->flag & RX_FLAG_MMIC_ERROR)) {
- ieee80211_rx_michael_mic_report(local->mdev, hdr, &rx);
+ ieee80211_rx_michael_mic_report(hdr, &rx);
return;
}
- if (unlikely(local->sw_scanning || local->hw_scanning))
+ if (unlikely(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
+ test_bit(SCAN_OFF_CHANNEL, &local->scanning)))
rx.flags |= IEEE80211_RX_IN_SCAN;
ieee80211_parse_qos(&rx);
{
struct ieee80211_supported_band *sband;
struct ieee80211_rate *rate;
- struct ieee80211_rx_status status;
+ struct sk_buff *skb = tid_agg_rx->reorder_buf[index];
+ struct ieee80211_rx_status *status;
- if (!tid_agg_rx->reorder_buf[index])
+ if (!skb)
goto no_frame;
+ status = IEEE80211_SKB_RXCB(skb);
+
/* release the reordered frames to stack */
- memcpy(&status, tid_agg_rx->reorder_buf[index]->cb, sizeof(status));
- sband = hw->wiphy->bands[status.band];
- if (status.flag & RX_FLAG_HT)
+ sband = hw->wiphy->bands[status->band];
+ if (status->flag & RX_FLAG_HT)
rate = sband->bitrates; /* TODO: HT rates */
else
- rate = &sband->bitrates[status.rate_idx];
- __ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index],
- &status, rate);
+ rate = &sband->bitrates[status->rate_idx];
+ __ieee80211_rx_handle_packet(hw, skb, rate);
tid_agg_rx->stored_mpdu_num--;
tid_agg_rx->reorder_buf[index] = NULL;
static u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
struct tid_ampdu_rx *tid_agg_rx,
struct sk_buff *skb,
- struct ieee80211_rx_status *rxstatus,
u16 mpdu_seq_num,
int bar_req)
{
/* put the frame in the reordering buffer */
tid_agg_rx->reorder_buf[index] = skb;
tid_agg_rx->reorder_time[index] = jiffies;
- memcpy(tid_agg_rx->reorder_buf[index]->cb, rxstatus,
- sizeof(*rxstatus));
tid_agg_rx->stored_mpdu_num++;
/* release the buffer until next missing frame */
index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn)
}
static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local,
- struct sk_buff *skb,
- struct ieee80211_rx_status *status)
+ struct sk_buff *skb)
{
struct ieee80211_hw *hw = &local->hw;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
/* according to mpdu sequence number deal with reordering buffer */
mpdu_seq_num = (sc & IEEE80211_SCTL_SEQ) >> 4;
- ret = ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb, status,
+ ret = ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb,
mpdu_seq_num, 0);
end_reorder:
return ret;
* This is the receive path handler. It is called by a low level driver when an
* 802.11 MPDU is received from the hardware.
*/
-void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_rx_status *status)
+void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rate *rate = NULL;
struct ieee80211_supported_band *sband;
+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
if (status->band < 0 ||
status->band >= IEEE80211_NUM_BANDS) {
return;
}
+ /*
+ * If we're suspending, it is possible although not too likely
+ * that we'd be receiving frames after having already partially
+ * quiesced the stack. We can't process such frames then since
+ * that might, for example, cause stations to be added or other
+ * driver callbacks be invoked.
+ */
+ if (unlikely(local->quiescing || local->suspended)) {
+ kfree_skb(skb);
+ return;
+ }
+
if (status->flag & RX_FLAG_HT) {
/* rate_idx is MCS index */
if (WARN_ON(status->rate_idx < 0 ||
* if it was previously present.
* Also, frames with less than 16 bytes are dropped.
*/
- skb = ieee80211_rx_monitor(local, skb, status, rate);
+ skb = ieee80211_rx_monitor(local, skb, rate);
if (!skb) {
rcu_read_unlock();
return;
* frames from other than operational channel), but that should not
* happen in normal networks.
*/
- if (!ieee80211_rx_reorder_ampdu(local, skb, status))
- __ieee80211_rx_handle_packet(hw, skb, status, rate);
+ if (!ieee80211_rx_reorder_ampdu(local, skb))
+ __ieee80211_rx_handle_packet(hw, skb, rate);
rcu_read_unlock();
}
/* This is a version of the rx handler that can be called from hard irq
* context. Post the skb on the queue and schedule the tasklet */
-void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_rx_status *status)
+void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct ieee80211_local *local = hw_to_local(hw);
BUILD_BUG_ON(sizeof(struct ieee80211_rx_status) > sizeof(skb->cb));
- skb->dev = local->mdev;
- /* copy status into skb->cb for use by tasklet */
- memcpy(skb->cb, status, sizeof(*status));
skb->pkt_type = IEEE80211_RX_MSG;
skb_queue_tail(&local->skb_queue, skb);
tasklet_schedule(&local->tasklet);
git.openpandora.org / pandora-kernel.git / blobdiff