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-rw-r--r--net/mac80211/cfg.c26
-rw-r--r--net/mac80211/debugfs_netdev.c108
-rw-r--r--net/mac80211/ieee80211_i.h14
-rw-r--r--net/mac80211/iface.c9
-rw-r--r--net/mac80211/main.c53
-rw-r--r--net/mac80211/mlme.c60
-rw-r--r--net/mac80211/offchannel.c68
-rw-r--r--net/mac80211/rx.c59
-rw-r--r--net/mac80211/scan.c88
-rw-r--r--net/mac80211/sta_info.c3
-rw-r--r--net/mac80211/status.c4
-rw-r--r--net/mac80211/tx.c12
-rw-r--r--net/mac80211/work.c66
-rw-r--r--net/mac80211/wpa.c39
14 files changed, 458 insertions, 151 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 4bc8a9250cfd..845c76d58d25 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1215,6 +1215,9 @@ static int ieee80211_set_channel(struct wiphy *wiphy,
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = NULL;
+ struct ieee80211_channel *old_oper;
+ enum nl80211_channel_type old_oper_type;
+ enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
if (netdev)
sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
@@ -1232,13 +1235,23 @@ static int ieee80211_set_channel(struct wiphy *wiphy,
break;
}
- local->oper_channel = chan;
+ if (sdata)
+ old_vif_oper_type = sdata->vif.bss_conf.channel_type;
+ old_oper_type = local->_oper_channel_type;
if (!ieee80211_set_channel_type(local, sdata, channel_type))
return -EBUSY;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
- if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
+ old_oper = local->oper_channel;
+ local->oper_channel = chan;
+
+ /* Update driver if changes were actually made. */
+ if ((old_oper != local->oper_channel) ||
+ (old_oper_type != local->_oper_channel_type))
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+
+ if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
+ old_vif_oper_type != sdata->vif.bss_conf.channel_type)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
return 0;
@@ -1274,8 +1287,11 @@ static int ieee80211_scan(struct wiphy *wiphy,
case NL80211_IFTYPE_P2P_GO:
if (sdata->local->ops->hw_scan)
break;
- /* FIXME: implement NoA while scanning in software */
- return -EOPNOTSUPP;
+ /*
+ * FIXME: implement NoA while scanning in software,
+ * for now fall through to allow scanning only when
+ * beaconing hasn't been configured yet
+ */
case NL80211_IFTYPE_AP:
if (sdata->u.ap.beacon)
return -EOPNOTSUPP;
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 872adb86200c..dacace6b1393 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -36,7 +36,7 @@ static ssize_t ieee80211_if_read(
ret = (*format)(sdata, buf, sizeof(buf));
read_unlock(&dev_base_lock);
- if (ret != -EINVAL)
+ if (ret >= 0)
ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
return ret;
@@ -149,6 +149,7 @@ IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
HEX);
IEEE80211_IF_FILE(flags, flags, HEX);
IEEE80211_IF_FILE(state, state, LHEX);
+IEEE80211_IF_FILE(channel_type, vif.bss_conf.channel_type, DEC);
/* STA attributes */
IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
@@ -220,6 +221,104 @@ static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
__IEEE80211_IF_FILE_W(smps);
+static ssize_t ieee80211_if_fmt_tkip_mic_test(
+ const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+{
+ return -EOPNOTSUPP;
+}
+
+static int hwaddr_aton(const char *txt, u8 *addr)
+{
+ int i;
+
+ for (i = 0; i < ETH_ALEN; i++) {
+ int a, b;
+
+ a = hex_to_bin(*txt++);
+ if (a < 0)
+ return -1;
+ b = hex_to_bin(*txt++);
+ if (b < 0)
+ return -1;
+ *addr++ = (a << 4) | b;
+ if (i < 5 && *txt++ != ':')
+ return -1;
+ }
+
+ return 0;
+}
+
+static ssize_t ieee80211_if_parse_tkip_mic_test(
+ struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
+{
+ struct ieee80211_local *local = sdata->local;
+ u8 addr[ETH_ALEN];
+ struct sk_buff *skb;
+ struct ieee80211_hdr *hdr;
+ __le16 fc;
+
+ /*
+ * Assume colon-delimited MAC address with possible white space
+ * following.
+ */
+ if (buflen < 3 * ETH_ALEN - 1)
+ return -EINVAL;
+ if (hwaddr_aton(buf, addr) < 0)
+ return -EINVAL;
+
+ if (!ieee80211_sdata_running(sdata))
+ return -ENOTCONN;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100);
+ if (!skb)
+ return -ENOMEM;
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ hdr = (struct ieee80211_hdr *) skb_put(skb, 24);
+ memset(hdr, 0, 24);
+ fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_AP:
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
+ /* DA BSSID SA */
+ memcpy(hdr->addr1, addr, ETH_ALEN);
+ memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
+ memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN);
+ break;
+ case NL80211_IFTYPE_STATION:
+ fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
+ /* BSSID SA DA */
+ if (sdata->vif.bss_conf.bssid == NULL) {
+ dev_kfree_skb(skb);
+ return -ENOTCONN;
+ }
+ memcpy(hdr->addr1, sdata->vif.bss_conf.bssid, ETH_ALEN);
+ memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
+ memcpy(hdr->addr3, addr, ETH_ALEN);
+ break;
+ default:
+ dev_kfree_skb(skb);
+ return -EOPNOTSUPP;
+ }
+ hdr->frame_control = fc;
+
+ /*
+ * Add some length to the test frame to make it look bit more valid.
+ * The exact contents does not matter since the recipient is required
+ * to drop this because of the Michael MIC failure.
+ */
+ memset(skb_put(skb, 50), 0, 50);
+
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE;
+
+ ieee80211_tx_skb(sdata, skb);
+
+ return buflen;
+}
+
+__IEEE80211_IF_FILE_W(tkip_mic_test);
+
/* AP attributes */
IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
@@ -289,6 +388,7 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(drop_unencrypted);
DEBUGFS_ADD(flags);
DEBUGFS_ADD(state);
+ DEBUGFS_ADD(channel_type);
DEBUGFS_ADD(rc_rateidx_mask_2ghz);
DEBUGFS_ADD(rc_rateidx_mask_5ghz);
@@ -297,6 +397,7 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(last_beacon);
DEBUGFS_ADD(ave_beacon);
DEBUGFS_ADD_MODE(smps, 0600);
+ DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
}
static void add_ap_files(struct ieee80211_sub_if_data *sdata)
@@ -304,12 +405,14 @@ static void add_ap_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(drop_unencrypted);
DEBUGFS_ADD(flags);
DEBUGFS_ADD(state);
+ DEBUGFS_ADD(channel_type);
DEBUGFS_ADD(rc_rateidx_mask_2ghz);
DEBUGFS_ADD(rc_rateidx_mask_5ghz);
DEBUGFS_ADD(num_sta_ps);
DEBUGFS_ADD(dtim_count);
DEBUGFS_ADD(num_buffered_multicast);
+ DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
}
static void add_wds_files(struct ieee80211_sub_if_data *sdata)
@@ -317,6 +420,7 @@ static void add_wds_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(drop_unencrypted);
DEBUGFS_ADD(flags);
DEBUGFS_ADD(state);
+ DEBUGFS_ADD(channel_type);
DEBUGFS_ADD(rc_rateidx_mask_2ghz);
DEBUGFS_ADD(rc_rateidx_mask_5ghz);
@@ -328,6 +432,7 @@ static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(drop_unencrypted);
DEBUGFS_ADD(flags);
DEBUGFS_ADD(state);
+ DEBUGFS_ADD(channel_type);
DEBUGFS_ADD(rc_rateidx_mask_2ghz);
DEBUGFS_ADD(rc_rateidx_mask_5ghz);
}
@@ -336,6 +441,7 @@ static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(flags);
DEBUGFS_ADD(state);
+ DEBUGFS_ADD(channel_type);
}
#ifdef CONFIG_MAC80211_MESH
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c47d7c0e48a4..44eea1af1553 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -225,6 +225,7 @@ struct ieee80211_if_ap {
struct sk_buff_head ps_bc_buf;
atomic_t num_sta_ps; /* number of stations in PS mode */
int dtim_count;
+ bool dtim_bc_mc;
};
struct ieee80211_if_wds {
@@ -654,8 +655,6 @@ struct tpt_led_trigger {
* well be on the operating channel
* @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
* determine if we are on the operating channel or not
- * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
- * gets only set in conjunction with SCAN_SW_SCANNING
* @SCAN_COMPLETED: Set for our scan work function when the driver reported
* that the scan completed.
* @SCAN_ABORTED: Set for our scan work function when the driver reported
@@ -664,7 +663,6 @@ struct tpt_led_trigger {
enum {
SCAN_SW_SCANNING,
SCAN_HW_SCANNING,
- SCAN_OFF_CHANNEL,
SCAN_COMPLETED,
SCAN_ABORTED,
};
@@ -1147,10 +1145,14 @@ void ieee80211_rx_bss_put(struct ieee80211_local *local,
struct ieee80211_bss *bss);
/* off-channel helpers */
-void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
-void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
+bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local);
+void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local,
+ bool tell_ap);
+void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
+ bool offchannel_ps_enable);
void ieee80211_offchannel_return(struct ieee80211_local *local,
- bool enable_beaconing);
+ bool enable_beaconing,
+ bool offchannel_ps_disable);
void ieee80211_hw_roc_setup(struct ieee80211_local *local);
/* interface handling */
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 8acba456744e..5a4e19b88032 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -382,6 +382,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, *tmp;
u32 hw_reconf_flags = 0;
int i;
+ enum nl80211_channel_type orig_ct;
if (local->scan_sdata == sdata)
ieee80211_scan_cancel(local);
@@ -542,8 +543,14 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
hw_reconf_flags = 0;
}
+ /* Re-calculate channel-type, in case there are multiple vifs
+ * on different channel types.
+ */
+ orig_ct = local->_oper_channel_type;
+ ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT);
+
/* do after stop to avoid reconfiguring when we stop anyway */
- if (hw_reconf_flags)
+ if (hw_reconf_flags || (orig_ct != local->_oper_channel_type))
ieee80211_hw_config(local, hw_reconf_flags);
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 09a27449f3fd..c155c0b69426 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -98,6 +98,41 @@ static void ieee80211_reconfig_filter(struct work_struct *work)
ieee80211_configure_filter(local);
}
+/*
+ * Returns true if we are logically configured to be on
+ * the operating channel AND the hardware-conf is currently
+ * configured on the operating channel. Compares channel-type
+ * as well.
+ */
+bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local)
+{
+ struct ieee80211_channel *chan, *scan_chan;
+ enum nl80211_channel_type channel_type;
+
+ /* This logic needs to match logic in ieee80211_hw_config */
+ if (local->scan_channel) {
+ chan = local->scan_channel;
+ channel_type = NL80211_CHAN_NO_HT;
+ } else if (local->tmp_channel) {
+ chan = scan_chan = local->tmp_channel;
+ channel_type = local->tmp_channel_type;
+ } else {
+ chan = local->oper_channel;
+ channel_type = local->_oper_channel_type;
+ }
+
+ if (chan != local->oper_channel ||
+ channel_type != local->_oper_channel_type)
+ return false;
+
+ /* Check current hardware-config against oper_channel. */
+ if ((local->oper_channel != local->hw.conf.channel) ||
+ (local->_oper_channel_type != local->hw.conf.channel_type))
+ return false;
+
+ return true;
+}
+
int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
{
struct ieee80211_channel *chan, *scan_chan;
@@ -110,21 +145,27 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
scan_chan = local->scan_channel;
+ /* If this off-channel logic ever changes, ieee80211_on_oper_channel
+ * may need to change as well.
+ */
offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
if (scan_chan) {
chan = scan_chan;
channel_type = NL80211_CHAN_NO_HT;
- local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
- } else if (local->tmp_channel &&
- local->oper_channel != local->tmp_channel) {
+ } else if (local->tmp_channel) {
chan = scan_chan = local->tmp_channel;
channel_type = local->tmp_channel_type;
- local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
} else {
chan = local->oper_channel;
channel_type = local->_oper_channel_type;
- local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
}
+
+ if (chan != local->oper_channel ||
+ channel_type != local->_oper_channel_type)
+ local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
+ else
+ local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
+
offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
if (offchannel_flag || chan != local->hw.conf.channel ||
@@ -231,7 +272,7 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
if (changed & BSS_CHANGED_BEACON_ENABLED) {
if (local->quiescing || !ieee80211_sdata_running(sdata) ||
- test_bit(SCAN_SW_SCANNING, &local->scanning)) {
+ test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) {
sdata->vif.bss_conf.enable_beacon = false;
} else {
/*
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index dfa752e5520b..f77adf1a520e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -28,8 +28,15 @@
#include "rate.h"
#include "led.h"
-#define IEEE80211_MAX_NULLFUNC_TRIES 2
-#define IEEE80211_MAX_PROBE_TRIES 5
+static int max_nullfunc_tries = 2;
+module_param(max_nullfunc_tries, int, 0644);
+MODULE_PARM_DESC(max_nullfunc_tries,
+ "Maximum nullfunc tx tries before disconnecting (reason 4).");
+
+static int max_probe_tries = 5;
+module_param(max_probe_tries, int, 0644);
+MODULE_PARM_DESC(max_probe_tries,
+ "Maximum probe tries before disconnecting (reason 4).");
/*
* Beacon loss timeout is calculated as N frames times the
@@ -51,7 +58,11 @@
* a probe request because of beacon loss or for
* checking the connection still works.
*/
-#define IEEE80211_PROBE_WAIT (HZ / 2)
+static int probe_wait_ms = 500;
+module_param(probe_wait_ms, int, 0644);
+MODULE_PARM_DESC(probe_wait_ms,
+ "Maximum time(ms) to wait for probe response"
+ " before disconnecting (reason 4).");
/*
* Weight given to the latest Beacon frame when calculating average signal
@@ -161,6 +172,7 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband;
struct sta_info *sta;
u32 changed = 0;
+ int hti_cfreq;
u16 ht_opmode;
bool enable_ht = true;
enum nl80211_channel_type prev_chantype;
@@ -174,10 +186,27 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
if (!sband->ht_cap.ht_supported)
enable_ht = false;
- /* check that channel matches the right operating channel */
- if (local->hw.conf.channel->center_freq !=
- ieee80211_channel_to_frequency(hti->control_chan, sband->band))
- enable_ht = false;
+ if (enable_ht) {
+ hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan,
+ sband->band);
+ /* check that channel matches the right operating channel */
+ if (local->hw.conf.channel->center_freq != hti_cfreq) {
+ /* Some APs mess this up, evidently.
+ * Netgear WNDR3700 sometimes reports 4 higher than
+ * the actual channel, for instance.
+ */
+ printk(KERN_DEBUG
+ "%s: Wrong control channel in association"
+ " response: configured center-freq: %d"
+ " hti-cfreq: %d hti->control_chan: %d"
+ " band: %d. Disabling HT.\n",
+ sdata->name,
+ local->hw.conf.channel->center_freq,
+ hti_cfreq, hti->control_chan,
+ sband->band);
+ enable_ht = false;
+ }
+ }
if (enable_ht) {
channel_type = NL80211_CHAN_HT20;
@@ -1098,7 +1127,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
const u8 *ssid;
u8 *dst = ifmgd->associated->bssid;
- u8 unicast_limit = max(1, IEEE80211_MAX_PROBE_TRIES - 3);
+ u8 unicast_limit = max(1, max_probe_tries - 3);
/*
* Try sending broadcast probe requests for the last three
@@ -1124,7 +1153,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
}
ifmgd->probe_send_count++;
- ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT;
+ ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
run_again(ifmgd, ifmgd->probe_timeout);
}
@@ -1225,7 +1254,8 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
- printk(KERN_DEBUG "Connection to AP %pM lost.\n", bssid);
+ printk(KERN_DEBUG "%s: Connection to AP %pM lost.\n",
+ sdata->name, bssid);
ieee80211_set_disassoc(sdata, true, true);
mutex_unlock(&ifmgd->mtx);
@@ -1970,9 +2000,9 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
- max_tries = IEEE80211_MAX_NULLFUNC_TRIES;
+ max_tries = max_nullfunc_tries;
else
- max_tries = IEEE80211_MAX_PROBE_TRIES;
+ max_tries = max_probe_tries;
/* ACK received for nullfunc probing frame */
if (!ifmgd->probe_send_count)
@@ -2004,7 +2034,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
"%s: Failed to send nullfunc to AP %pM"
" after %dms, disconnecting.\n",
sdata->name,
- bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
+ bssid, probe_wait_ms);
#endif
ieee80211_sta_connection_lost(sdata, bssid);
} else if (ifmgd->probe_send_count < max_tries) {
@@ -2013,7 +2043,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
"%s: No probe response from AP %pM"
" after %dms, try %d/%i\n",
sdata->name,
- bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ,
+ bssid, probe_wait_ms,
ifmgd->probe_send_count, max_tries);
#endif
ieee80211_mgd_probe_ap_send(sdata);
@@ -2026,7 +2056,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
"%s: No probe response from AP %pM"
" after %dms, disconnecting.\n",
sdata->name,
- bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
+ bssid, probe_wait_ms);
ieee80211_sta_connection_lost(sdata, bssid);
}
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index b4e52676f3fb..13427b194ced 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -17,10 +17,14 @@
#include "driver-trace.h"
/*
- * inform AP that we will go to sleep so that it will buffer the frames
- * while we scan
+ * Tell our hardware to disable PS.
+ * Optionally inform AP that we will go to sleep so that it will buffer
+ * the frames while we are doing off-channel work. This is optional
+ * because we *may* be doing work on-operating channel, and want our
+ * hardware unconditionally awake, but still let the AP send us normal frames.
*/
-static void ieee80211_offchannel_ps_enable(struct ieee80211_sub_if_data *sdata)
+static void ieee80211_offchannel_ps_enable(struct ieee80211_sub_if_data *sdata,
+ bool tell_ap)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
@@ -41,8 +45,8 @@ static void ieee80211_offchannel_ps_enable(struct ieee80211_sub_if_data *sdata)
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
- if (!(local->offchannel_ps_enabled) ||
- !(local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK))
+ if (tell_ap && (!local->offchannel_ps_enabled ||
+ !(local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)))
/*
* If power save was enabled, no need to send a nullfunc
* frame because AP knows that we are sleeping. But if the
@@ -77,6 +81,9 @@ static void ieee80211_offchannel_ps_disable(struct ieee80211_sub_if_data *sdata)
* we are sleeping, let's just enable power save mode in
* hardware.
*/
+ /* TODO: Only set hardware if CONF_PS changed?
+ * TODO: Should we set offchannel_ps_enabled to false?
+ */
local->hw.conf.flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
} else if (local->hw.conf.dynamic_ps_timeout > 0) {
@@ -95,63 +102,61 @@ static void ieee80211_offchannel_ps_disable(struct ieee80211_sub_if_data *sdata)
ieee80211_sta_reset_conn_monitor(sdata);
}
-void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local)
+void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
+ bool offchannel_ps_enable)
{
struct ieee80211_sub_if_data *sdata;
+ /*
+ * notify the AP about us leaving the channel and stop all
+ * STA interfaces.
+ */
mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
if (!ieee80211_sdata_running(sdata))
continue;
- /* disable beaconing */
+ if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
+ set_bit(SDATA_STATE_OFFCHANNEL, &sdata->state);
+
+ /* Check to see if we should disable beaconing. */
if (sdata->vif.type == NL80211_IFTYPE_AP ||
sdata->vif.type == NL80211_IFTYPE_ADHOC ||
sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
ieee80211_bss_info_change_notify(
sdata, BSS_CHANGED_BEACON_ENABLED);
- /*
- * only handle non-STA interfaces here, STA interfaces
- * are handled in ieee80211_offchannel_stop_station(),
- * e.g., from the background scan state machine.
- *
- * In addition, do not stop monitor interface to allow it to be
- * used from user space controlled off-channel operations.
- */
- if (sdata->vif.type != NL80211_IFTYPE_STATION &&
- sdata->vif.type != NL80211_IFTYPE_MONITOR) {
- set_bit(SDATA_STATE_OFFCHANNEL, &sdata->state);
+ if (sdata->vif.type != NL80211_IFTYPE_MONITOR) {
netif_tx_stop_all_queues(sdata->dev);
+ if (offchannel_ps_enable &&
+ (sdata->vif.type == NL80211_IFTYPE_STATION) &&
+ sdata->u.mgd.associated)
+ ieee80211_offchannel_ps_enable(sdata, true);
}
}
mutex_unlock(&local->iflist_mtx);
}
-void ieee80211_offchannel_stop_station(struct ieee80211_local *local)
+void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local,
+ bool tell_ap)
{
struct ieee80211_sub_if_data *sdata;
- /*
- * notify the AP about us leaving the channel and stop all STA interfaces
- */
mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
if (!ieee80211_sdata_running(sdata))
continue;
- if (sdata->vif.type == NL80211_IFTYPE_STATION) {
- set_bit(SDATA_STATE_OFFCHANNEL, &sdata->state);
- netif_tx_stop_all_queues(sdata->dev);
- if (sdata->u.mgd.associated)
- ieee80211_offchannel_ps_enable(sdata);
- }
+ if (sdata->vif.type == NL80211_IFTYPE_STATION &&
+ sdata->u.mgd.associated)
+ ieee80211_offchannel_ps_enable(sdata, tell_ap);
}
mutex_unlock(&local->iflist_mtx);
}
void ieee80211_offchannel_return(struct ieee80211_local *local,
- bool enable_beaconing)
+ bool enable_beaconing,
+ bool offchannel_ps_disable)
{
struct ieee80211_sub_if_data *sdata;
@@ -161,7 +166,8 @@ void ieee80211_offchannel_return(struct ieee80211_local *local,
continue;
/* Tell AP we're back */
- if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ if (offchannel_ps_disable &&
+ sdata->vif.type == NL80211_IFTYPE_STATION) {
if (sdata->u.mgd.associated)
ieee80211_offchannel_ps_disable(sdata);
}
@@ -181,7 +187,7 @@ void ieee80211_offchannel_return(struct ieee80211_local *local,
netif_tx_wake_all_queues(sdata->dev);
}
- /* re-enable beaconing */
+ /* Check to see if we should re-enable beaconing */
if (enable_beaconing &&
(sdata->vif.type == NL80211_IFTYPE_AP ||
sdata->vif.type == NL80211_IFTYPE_ADHOC ||
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 7185c9316be2..045b2fe4a414 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -142,11 +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 {
@@ -409,16 +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;
@@ -815,7 +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;
}
@@ -1105,7 +1096,8 @@ 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);
@@ -1134,6 +1126,27 @@ 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)
{
@@ -1178,7 +1191,8 @@ 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)) {
@@ -1929,7 +1943,10 @@ 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));
}
@@ -2626,7 +2643,8 @@ 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;
}
@@ -2675,7 +2693,8 @@ 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;
}
@@ -2766,7 +2785,7 @@ 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))
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 1ef73be76b25..0ea6adae3e06 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -212,6 +212,14 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
if (bss)
ieee80211_rx_bss_put(sdata->local, bss);
+ /* If we are on-operating-channel, and this packet is for the
+ * current channel, pass the pkt on up the stack so that
+ * the rest of the stack can make use of it.
+ */
+ if (ieee80211_cfg_on_oper_channel(sdata->local)
+ && (channel == sdata->local->oper_channel))
+ return RX_CONTINUE;
+
dev_kfree_skb(skb);
return RX_QUEUED;
}
@@ -293,15 +301,31 @@ static void __ieee80211_scan_completed_finish(struct ieee80211_hw *hw,
bool was_hw_scan)
{
struct ieee80211_local *local = hw_to_local(hw);
+ bool on_oper_chan;
+ bool enable_beacons = false;
+
+ mutex_lock(&local->mtx);
+ on_oper_chan = ieee80211_cfg_on_oper_channel(local);
+
+ if (was_hw_scan || !on_oper_chan) {
+ if (WARN_ON(local->scan_channel))
+ local->scan_channel = NULL;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+ }
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
if (!was_hw_scan) {
+ bool on_oper_chan2;
ieee80211_configure_filter(local);
drv_sw_scan_complete(local);
- ieee80211_offchannel_return(local, true);
+ on_oper_chan2 = ieee80211_cfg_on_oper_channel(local);
+ /* We should always be on-channel at this point. */
+ WARN_ON(!on_oper_chan2);
+ if (on_oper_chan2 && (on_oper_chan != on_oper_chan2))
+ enable_beacons = true;
+
+ ieee80211_offchannel_return(local, enable_beacons, true);
}
- mutex_lock(&local->mtx);
ieee80211_recalc_idle(local);
mutex_unlock(&local->mtx);
@@ -341,13 +365,15 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
*/
drv_sw_scan_start(local);
- ieee80211_offchannel_stop_beaconing(local);
-
local->leave_oper_channel_time = 0;
local->next_scan_state = SCAN_DECISION;
local->scan_channel_idx = 0;
- drv_flush(local, false);
+ /* We always want to use off-channel PS, even if we
+ * are not really leaving oper-channel. Don't
+ * tell the AP though, as long as we are on-channel.
+ */
+ ieee80211_offchannel_enable_all_ps(local, false);
ieee80211_configure_filter(local);
@@ -487,7 +513,21 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
}
mutex_unlock(&local->iflist_mtx);
- if (local->scan_channel) {
+ next_chan = local->scan_req->channels[local->scan_channel_idx];
+
+ if (ieee80211_cfg_on_oper_channel(local)) {
+ /* We're currently on operating channel. */
+ if ((next_chan == local->oper_channel) &&
+ (local->_oper_channel_type == NL80211_CHAN_NO_HT))
+ /* We don't need to move off of operating channel. */
+ local->next_scan_state = SCAN_SET_CHANNEL;
+ else
+ /*
+ * We do need to leave operating channel, as next
+ * scan is somewhere else.
+ */
+ local->next_scan_state = SCAN_LEAVE_OPER_CHANNEL;
+ } else {
/*
* we're currently scanning a different channel, let's
* see if we can scan another channel without interfering
@@ -503,7 +543,6 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
*
* Otherwise switch back to the operating channel.
*/
- next_chan = local->scan_req->channels[local->scan_channel_idx];
bad_latency = time_after(jiffies +
ieee80211_scan_get_channel_time(next_chan),
@@ -521,12 +560,6 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
local->next_scan_state = SCAN_ENTER_OPER_CHANNEL;
else
local->next_scan_state = SCAN_SET_CHANNEL;
- } else {
- /*
- * we're on the operating channel currently, let's
- * leave that channel now to scan another one
- */
- local->next_scan_state = SCAN_LEAVE_OPER_CHANNEL;
}
*next_delay = 0;
@@ -535,9 +568,10 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
static void ieee80211_scan_state_leave_oper_channel(struct ieee80211_local *local,
unsigned long *next_delay)
{
- ieee80211_offchannel_stop_station(local);
-
- __set_bit(SCAN_OFF_CHANNEL, &local->scanning);
+ /* PS will already be in off-channel mode,
+ * we do that once at the beginning of scanning.
+ */
+ ieee80211_offchannel_stop_vifs(local, false);
/*
* What if the nullfunc frames didn't arrive?
@@ -560,15 +594,15 @@ static void ieee80211_scan_state_enter_oper_channel(struct ieee80211_local *loca
{
/* switch back to the operating channel */
local->scan_channel = NULL;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+ if (!ieee80211_cfg_on_oper_channel(local))
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
/*
- * Only re-enable station mode interface now; beaconing will be
- * re-enabled once the full scan has been completed.
+ * Re-enable vifs and beaconing. Leave PS
+ * in off-channel state..will put that back
+ * on-channel at the end of scanning.
*/
- ieee80211_offchannel_return(local, false);
-
- __clear_bit(SCAN_OFF_CHANNEL, &local->scanning);
+ ieee80211_offchannel_return(local, true, false);
*next_delay = HZ / 5;
local->next_scan_state = SCAN_DECISION;
@@ -584,8 +618,12 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
chan = local->scan_req->channels[local->scan_channel_idx];
local->scan_channel = chan;
- if (ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL))
- skip = 1;
+
+ /* Only call hw-config if we really need to change channels. */
+ if ((chan != local->hw.conf.channel) ||
+ (local->hw.conf.channel_type != NL80211_CHAN_NO_HT))
+ if (ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL))
+ skip = 1;
/* advance state machine to next channel/band */
local->scan_channel_idx++;
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index c426504ed1cf..5a11078827ab 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -899,7 +899,8 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
struct ieee80211_local *local = sdata->local;
int sent, buffered;
- drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
+ if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
+ drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
if (!skb_queue_empty(&sta->ps_tx_buf))
sta_info_clear_tim_bit(sta);
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 38a797217a91..ffb0de9bc2fa 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -98,6 +98,10 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
* (b) always process RX events before TX status events if ordering
* can be unknown, for example with different interrupt status
* bits.
+ * (c) if PS mode transitions are manual (i.e. the flag
+ * %IEEE80211_HW_AP_LINK_PS is set), always process PS state
+ * changes before calling TX status events if ordering can be
+ * unknown.
*/
if (test_sta_flags(sta, WLAN_STA_PS_STA) &&
skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) {
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index ffc67491c38f..38e593939727 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -257,7 +257,8 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
if (unlikely(info->flags & IEEE80211_TX_CTL_INJECTED))
return TX_CONTINUE;
- if (unlikely(test_bit(SCAN_OFF_CHANNEL, &tx->local->scanning)) &&
+ if (unlikely(test_bit(SCAN_SW_SCANNING, &tx->local->scanning)) &&
+ test_bit(SDATA_STATE_OFFCHANNEL, &tx->sdata->state) &&
!ieee80211_is_probe_req(hdr->frame_control) &&
!ieee80211_is_nullfunc(hdr->frame_control))
/*
@@ -1394,7 +1395,8 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
/* handlers after fragment must be aware of tx info fragmentation! */
CALL_TXH(ieee80211_tx_h_stats);
CALL_TXH(ieee80211_tx_h_encrypt);
- CALL_TXH(ieee80211_tx_h_calculate_duration);
+ if (!(tx->local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL))
+ CALL_TXH(ieee80211_tx_h_calculate_duration);
#undef CALL_TXH
txh_done:
@@ -2178,6 +2180,8 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss,
if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf))
aid0 = 1;
+ bss->dtim_bc_mc = 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
@@ -2241,7 +2245,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
if (sdata->vif.type == NL80211_IFTYPE_AP) {
ap = &sdata->u.ap;
beacon = rcu_dereference(ap->beacon);
- if (ap && beacon) {
+ if (beacon) {
/*
* headroom, head length,
* tail length and maximum TIM length
@@ -2548,7 +2552,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
if (sdata->vif.type != NL80211_IFTYPE_AP || !beacon || !beacon->head)
goto out;
- if (bss->dtim_count != 0)
+ if (bss->dtim_count != 0 || !bss->dtim_bc_mc)
goto out; /* send buffered bc/mc only after DTIM beacon */
while (1) {
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 36305e0d06ef..6bf787a5b38a 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -924,18 +924,44 @@ static void ieee80211_work_work(struct work_struct *work)
}
if (!started && !local->tmp_channel) {
- /*
- * TODO: could optimize this by leaving the
- * station vifs in awake mode if they
- * happen to be on the same channel as
- * the requested channel
- */
- ieee80211_offchannel_stop_beaconing(local);
- ieee80211_offchannel_stop_station(local);
+ bool on_oper_chan;
+ bool tmp_chan_changed = false;
+ bool on_oper_chan2;
+ on_oper_chan = ieee80211_cfg_on_oper_channel(local);
+ if (local->tmp_channel)
+ if ((local->tmp_channel != wk->chan) ||
+ (local->tmp_channel_type != wk->chan_type))
+ tmp_chan_changed = true;
local->tmp_channel = wk->chan;
local->tmp_channel_type = wk->chan_type;
- ieee80211_hw_config(local, 0);
+ /*
+ * Leave the station vifs in awake mode if they
+ * happen to be on the same channel as
+ * the requested channel.
+ */
+ on_oper_chan2 = ieee80211_cfg_on_oper_channel(local);
+ if (on_oper_chan != on_oper_chan2) {
+ if (on_oper_chan2) {
+ /* going off oper channel, PS too */
+ ieee80211_offchannel_stop_vifs(local,
+ true);
+ ieee80211_hw_config(local, 0);
+ } else {
+ /* going on channel, but leave PS
+ * off-channel. */
+ ieee80211_hw_config(local, 0);
+ ieee80211_offchannel_return(local,
+ true,
+ false);
+ }
+ } else if (tmp_chan_changed)
+ /* Still off-channel, but on some other
+ * channel, so update hardware.
+ * PS should already be off-channel.
+ */
+ ieee80211_hw_config(local, 0);
+
started = true;
wk->timeout = jiffies;
}
@@ -1011,9 +1037,27 @@ static void ieee80211_work_work(struct work_struct *work)
}
if (!remain_off_channel && local->tmp_channel) {
+ bool on_oper_chan = ieee80211_cfg_on_oper_channel(local);
local->tmp_channel = NULL;
- ieee80211_hw_config(local, 0);
- ieee80211_offchannel_return(local, true);
+ /* If tmp_channel wasn't operating channel, then
+ * we need to go back on-channel.
+ * NOTE: If we can ever be here while scannning,
+ * or if the hw_config() channel config logic changes,
+ * then we may need to do a more thorough check to see if
+ * we still need to do a hardware config. Currently,
+ * we cannot be here while scanning, however.
+ */
+ if (ieee80211_cfg_on_oper_channel(local) && !on_oper_chan)
+ ieee80211_hw_config(local, 0);
+
+ /* At the least, we need to disable offchannel_ps,
+ * so just go ahead and run the entire offchannel
+ * return logic here. We *could* skip enabling
+ * beaconing if we were already on-oper-channel
+ * as a future optimization.
+ */
+ ieee80211_offchannel_return(local, true, true);
+
/* give connection some time to breathe */
run_again(local, jiffies + HZ/2);
}
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index bee230d8fd11..f1765de2f4bf 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -26,13 +26,12 @@
ieee80211_tx_result
ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
{
- u8 *data, *key, *mic, key_offset;
+ u8 *data, *key, *mic;
size_t data_len;
unsigned int hdrlen;
struct ieee80211_hdr *hdr;
struct sk_buff *skb = tx->skb;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- int authenticator;
int tail;
hdr = (struct ieee80211_hdr *)skb->data;
@@ -47,6 +46,11 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
data = skb->data + hdrlen;
data_len = skb->len - hdrlen;
+ if (unlikely(info->flags & IEEE80211_TX_INTFL_TKIP_MIC_FAILURE)) {
+ /* Need to use software crypto for the test */
+ info->control.hw_key = NULL;
+ }
+
if (info->control.hw_key &&
!(tx->flags & IEEE80211_TX_FRAGMENTED) &&
!(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC)) {
@@ -62,17 +66,11 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
skb_headroom(skb) < TKIP_IV_LEN))
return TX_DROP;
-#if 0
- authenticator = fc & IEEE80211_FCTL_FROMDS; /* FIX */
-#else
- authenticator = 1;
-#endif
- key_offset = authenticator ?
- NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY :
- NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
- key = &tx->key->conf.key[key_offset];
+ key = &tx->key->conf.key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY];
mic = skb_put(skb, MICHAEL_MIC_LEN);
michael_mic(key, hdr, data, data_len, mic);
+ if (unlikely(info->flags & IEEE80211_TX_INTFL_TKIP_MIC_FAILURE))
+ mic[0]++;
return TX_CONTINUE;
}
@@ -81,14 +79,13 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
ieee80211_rx_result
ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
{
- u8 *data, *key = NULL, key_offset;
+ u8 *data, *key = NULL;
size_t data_len;
unsigned int hdrlen;
u8 mic[MICHAEL_MIC_LEN];
struct sk_buff *skb = rx->skb;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- int authenticator = 1, wpa_test = 0;
/* No way to verify the MIC if the hardware stripped it */
if (status->flag & RX_FLAG_MMIC_STRIPPED)
@@ -106,17 +103,9 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
data = skb->data + hdrlen;
data_len = skb->len - hdrlen - MICHAEL_MIC_LEN;
-#if 0
- authenticator = fc & IEEE80211_FCTL_TODS; /* FIX */
-#else
- authenticator = 1;
-#endif
- key_offset = authenticator ?
- NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY :
- NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
- key = &rx->key->conf.key[key_offset];
+ key = &rx->key->conf.key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY];
michael_mic(key, hdr, data, data_len, mic);
- if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) {
+ if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0) {
if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
return RX_DROP_UNUSABLE;
@@ -208,7 +197,7 @@ ieee80211_rx_result
ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
- int hdrlen, res, hwaccel = 0, wpa_test = 0;
+ int hdrlen, res, hwaccel = 0;
struct ieee80211_key *key = rx->key;
struct sk_buff *skb = rx->skb;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
@@ -235,7 +224,7 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
hdr->addr1, hwaccel, rx->queue,
&rx->tkip_iv32,
&rx->tkip_iv16);
- if (res != TKIP_DECRYPT_OK || wpa_test)
+ if (res != TKIP_DECRYPT_OK)
return RX_DROP_UNUSABLE;
/* Trim ICV */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.