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Diffstat (limited to 'net/mac80211/rx.c')
-rw-r--r--net/mac80211/rx.c130
1 files changed, 92 insertions, 38 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index a6701ed87f0d..5c1930ba8ebe 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -77,7 +77,7 @@ ieee80211_rx_radiotap_len(struct ieee80211_local *local,
/* always present fields */
len = sizeof(struct ieee80211_radiotap_header) + 9;
- if (status->flag & RX_FLAG_TSFT)
+ if (status->flag & RX_FLAG_MACTIME_MPDU)
len += 8;
if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
len += 1;
@@ -85,6 +85,9 @@ ieee80211_rx_radiotap_len(struct ieee80211_local *local,
if (len & 1) /* padding for RX_FLAGS if necessary */
len++;
+ if (status->flag & RX_FLAG_HT) /* HT info */
+ len += 3;
+
return len;
}
@@ -120,7 +123,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
/* the order of the following fields is important */
/* IEEE80211_RADIOTAP_TSFT */
- if (status->flag & RX_FLAG_TSFT) {
+ if (status->flag & RX_FLAG_MACTIME_MPDU) {
put_unaligned_le64(status->mactime, pos);
rthdr->it_present |=
cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);
@@ -139,11 +142,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
/* IEEE80211_RADIOTAP_RATE */
if (status->flag & RX_FLAG_HT) {
/*
- * TODO: add following information into radiotap header once
- * suitable fields are defined for it:
- * - MCS index (status->rate_idx)
- * - HT40 (status->flag & RX_FLAG_40MHZ)
- * - short-GI (status->flag & RX_FLAG_SHORT_GI)
+ * MCS information is a separate field in radiotap,
+ * added below.
*/
*pos = 0;
} else {
@@ -193,6 +193,20 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
rx_flags |= IEEE80211_RADIOTAP_F_RX_BADPLCP;
put_unaligned_le16(rx_flags, pos);
pos += 2;
+
+ if (status->flag & RX_FLAG_HT) {
+ rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
+ *pos++ = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
+ IEEE80211_RADIOTAP_MCS_HAVE_GI |
+ IEEE80211_RADIOTAP_MCS_HAVE_BW;
+ *pos = 0;
+ if (status->flag & RX_FLAG_SHORT_GI)
+ *pos |= IEEE80211_RADIOTAP_MCS_SGI;
+ if (status->flag & RX_FLAG_40MHZ)
+ *pos |= IEEE80211_RADIOTAP_MCS_BW_40;
+ pos++;
+ *pos++ = status->rate_idx;
+ }
}
/*
@@ -392,16 +406,10 @@ ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx)
if (likely(!(status->rx_flags & IEEE80211_RX_IN_SCAN)))
return RX_CONTINUE;
- if (test_bit(SCAN_HW_SCANNING, &local->scanning))
+ if (test_bit(SCAN_HW_SCANNING, &local->scanning) ||
+ test_bit(SCAN_SW_SCANNING, &local->scanning))
return ieee80211_scan_rx(rx->sdata, skb);
- if (test_bit(SCAN_SW_SCANNING, &local->scanning)) {
- /* drop all the other packets during a software scan anyway */
- if (ieee80211_scan_rx(rx->sdata, skb) != RX_QUEUED)
- dev_kfree_skb(skb);
- return RX_QUEUED;
- }
-
/* scanning finished during invoking of handlers */
I802_DEBUG_INC(local->rx_handlers_drop_passive_scan);
return RX_DROP_UNUSABLE;
@@ -798,7 +806,7 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
rx->local->dot11FrameDuplicateCount++;
rx->sta->num_duplicates++;
}
- return RX_DROP_MONITOR;
+ return RX_DROP_UNUSABLE;
} else
rx->sta->last_seq_ctrl[rx->queue] = hdr->seq_ctrl;
}
@@ -824,18 +832,8 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
ieee80211_is_pspoll(hdr->frame_control)) &&
rx->sdata->vif.type != NL80211_IFTYPE_ADHOC &&
rx->sdata->vif.type != NL80211_IFTYPE_WDS &&
- (!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC)))) {
- if ((!ieee80211_has_fromds(hdr->frame_control) &&
- !ieee80211_has_tods(hdr->frame_control) &&
- ieee80211_is_data(hdr->frame_control)) ||
- !(status->rx_flags & IEEE80211_RX_RA_MATCH)) {
- /* Drop IBSS frames and frames for other hosts
- * silently. */
- return RX_DROP_MONITOR;
- }
-
+ (!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC))))
return RX_DROP_MONITOR;
- }
return RX_CONTINUE;
}
@@ -1088,7 +1086,8 @@ static void ap_sta_ps_start(struct sta_info *sta)
atomic_inc(&sdata->bss->num_sta_ps);
set_sta_flags(sta, WLAN_STA_PS_STA);
- drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta);
+ if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
+ drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta);
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "%s: STA %pM aid %d enters power save mode\n",
sdata->name, sta->sta.addr, sta->sta.aid);
@@ -1117,6 +1116,27 @@ static void ap_sta_ps_end(struct sta_info *sta)
ieee80211_sta_ps_deliver_wakeup(sta);
}
+int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start)
+{
+ struct sta_info *sta_inf = container_of(sta, struct sta_info, sta);
+ bool in_ps;
+
+ WARN_ON(!(sta_inf->local->hw.flags & IEEE80211_HW_AP_LINK_PS));
+
+ /* Don't let the same PS state be set twice */
+ in_ps = test_sta_flags(sta_inf, WLAN_STA_PS_STA);
+ if ((start && in_ps) || (!start && !in_ps))
+ return -EINVAL;
+
+ if (start)
+ ap_sta_ps_start(sta_inf);
+ else
+ ap_sta_ps_end(sta_inf);
+
+ return 0;
+}
+EXPORT_SYMBOL(ieee80211_sta_ps_transition);
+
static ieee80211_rx_result debug_noinline
ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
{
@@ -1136,14 +1156,23 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
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)
+ if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0) {
sta->last_rx = jiffies;
+ if (ieee80211_is_data(hdr->frame_control)) {
+ sta->last_rx_rate_idx = status->rate_idx;
+ sta->last_rx_rate_flag = status->flag;
+ }
+ }
} 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.
*/
sta->last_rx = jiffies;
+ if (ieee80211_is_data(hdr->frame_control)) {
+ sta->last_rx_rate_idx = status->rate_idx;
+ sta->last_rx_rate_flag = status->flag;
+ }
}
if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
@@ -1161,7 +1190,8 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
* Change STA power saving mode only at the end of a frame
* exchange sequence.
*/
- if (!ieee80211_has_morefrags(hdr->frame_control) &&
+ if (!(sta->local->hw.flags & IEEE80211_HW_AP_LINK_PS) &&
+ !ieee80211_has_morefrags(hdr->frame_control) &&
!(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) &&
(rx->sdata->vif.type == NL80211_IFTYPE_AP ||
rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) {
@@ -1556,17 +1586,36 @@ __ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
{
struct ieee80211_sub_if_data *sdata = rx->sdata;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
+ bool check_port_control = false;
+ struct ethhdr *ehdr;
+ int ret;
if (ieee80211_has_a4(hdr->frame_control) &&
sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
return -1;
+ if (sdata->vif.type == NL80211_IFTYPE_STATION &&
+ !!sdata->u.mgd.use_4addr != !!ieee80211_has_a4(hdr->frame_control)) {
+
+ if (!sdata->u.mgd.use_4addr)
+ return -1;
+ else
+ check_port_control = true;
+ }
+
if (is_multicast_ether_addr(hdr->addr1) &&
- ((sdata->vif.type == NL80211_IFTYPE_AP_VLAN && sdata->u.vlan.sta) ||
- (sdata->vif.type == NL80211_IFTYPE_STATION && sdata->u.mgd.use_4addr)))
+ sdata->vif.type == NL80211_IFTYPE_AP_VLAN && sdata->u.vlan.sta)
return -1;
- return ieee80211_data_to_8023(rx->skb, sdata->vif.addr, sdata->vif.type);
+ ret = ieee80211_data_to_8023(rx->skb, sdata->vif.addr, sdata->vif.type);
+ if (ret < 0 || !check_port_control)
+ return ret;
+
+ ehdr = (struct ethhdr *) rx->skb->data;
+ if (ehdr->h_proto != rx->sdata->control_port_protocol)
+ return -1;
+
+ return 0;
}
/*
@@ -1893,7 +1942,10 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
dev->stats.rx_bytes += rx->skb->len;
if (local->ps_sdata && local->hw.conf.dynamic_ps_timeout > 0 &&
- !is_multicast_ether_addr(((struct ethhdr *)rx->skb->data)->h_dest)) {
+ !is_multicast_ether_addr(
+ ((struct ethhdr *)rx->skb->data)->h_dest) &&
+ (!local->scanning &&
+ !test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state))) {
mod_timer(&local->dynamic_ps_timer, jiffies +
msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout));
}
@@ -2590,7 +2642,8 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
return 0;
if (!multicast &&
compare_ether_addr(sdata->vif.addr, hdr->addr1) != 0) {
- if (!(sdata->dev->flags & IFF_PROMISC))
+ if (!(sdata->dev->flags & IFF_PROMISC) ||
+ sdata->u.mgd.use_4addr)
return 0;
status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
}
@@ -2639,7 +2692,8 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
return 0;
} else if (!ieee80211_bssid_match(bssid,
sdata->vif.addr)) {
- if (!(status->rx_flags & IEEE80211_RX_IN_SCAN))
+ if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) &&
+ !ieee80211_is_beacon(hdr->frame_control))
return 0;
status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
}
@@ -2692,7 +2746,7 @@ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx,
if (!skb) {
if (net_ratelimit())
wiphy_debug(local->hw.wiphy,
- "failed to copy multicast frame for %s\n",
+ "failed to copy skb for %s\n",
sdata->name);
return true;
}
@@ -2730,7 +2784,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
local->dot11ReceivedFragmentCount++;
if (unlikely(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
- test_bit(SCAN_OFF_CHANNEL, &local->scanning)))
+ test_bit(SCAN_SW_SCANNING, &local->scanning)))
status->rx_flags |= IEEE80211_RX_IN_SCAN;
if (ieee80211_is_mgmt(fc))