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Diffstat (limited to 'net/mac80211/scan.c')
-rw-r--r--net/mac80211/scan.c61
1 files changed, 37 insertions, 24 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 43e60b5a7546..8ed83dcc149f 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -118,7 +118,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
struct ieee80211_tim_ie *tim_ie = elems->tim;
bss->dtim_period = tim_ie->dtim_period;
if (!elems->parse_error)
- bss->valid_data |= IEEE80211_BSS_VALID_DTIM;
+ bss->valid_data |= IEEE80211_BSS_VALID_DTIM;
}
/* If the beacon had no TIM IE, or it was invalid, use 1 */
@@ -174,7 +174,6 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
u8 *elements;
struct ieee80211_channel *channel;
size_t baselen;
- int freq;
bool beacon;
struct ieee802_11_elems elems;
@@ -209,13 +208,7 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
ieee802_11_parse_elems(elements, skb->len - baselen, &elems);
- if (elems.ds_params && elems.ds_params_len == 1)
- freq = ieee80211_channel_to_frequency(elems.ds_params[0],
- rx_status->band);
- else
- freq = rx_status->freq;
-
- channel = ieee80211_get_channel(local->hw.wiphy, freq);
+ channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
return;
@@ -254,6 +247,7 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_local *local)
local->hw_scan_req->n_channels = n_chans;
ielen = ieee80211_build_preq_ies(local, (u8 *)local->hw_scan_req->ie,
+ local->hw_scan_ies_bufsize,
req->ie, req->ie_len, band,
req->rates[band], 0);
local->hw_scan_req->ie_len = ielen;
@@ -336,6 +330,10 @@ EXPORT_SYMBOL(ieee80211_scan_completed);
static int ieee80211_start_sw_scan(struct ieee80211_local *local)
{
+ /* Software scan is not supported in multi-channel cases */
+ if (local->use_chanctx)
+ return -EOPNOTSUPP;
+
/*
* Hardware/driver doesn't support hw_scan, so use software
* scanning instead. First send a nullfunc frame with power save
@@ -417,7 +415,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
local->scan_req->ie, local->scan_req->ie_len,
local->scan_req->rates[band], false,
local->scan_req->no_cck,
- local->hw.conf.channel);
+ local->hw.conf.channel, true);
/*
* After sending probe requests, wait for probe responses
@@ -448,11 +446,13 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if (local->ops->hw_scan) {
u8 *ies;
+ local->hw_scan_ies_bufsize = 2 + IEEE80211_MAX_SSID_LEN +
+ local->scan_ies_len +
+ req->ie_len;
local->hw_scan_req = kmalloc(
sizeof(*local->hw_scan_req) +
req->n_channels * sizeof(req->channels[0]) +
- 2 + IEEE80211_MAX_SSID_LEN + local->scan_ies_len +
- req->ie_len, GFP_KERNEL);
+ local->hw_scan_ies_bufsize, GFP_KERNEL);
if (!local->hw_scan_req)
return -ENOMEM;
@@ -462,6 +462,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
sizeof(*local->hw_scan_req) +
req->n_channels * sizeof(req->channels[0]);
local->hw_scan_req->ie = ies;
+ local->hw_scan_req->flags = req->flags;
local->hw_scan_band = 0;
@@ -480,7 +481,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if (local->ops->hw_scan) {
__set_bit(SCAN_HW_SCANNING, &local->scanning);
} else if ((req->n_channels == 1) &&
- (req->channels[0] == local->oper_channel)) {
+ (req->channels[0] == local->_oper_channel)) {
/*
* If we are scanning only on the operating channel
* then we do not need to stop normal activities
@@ -562,6 +563,7 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
unsigned long min_beacon_int = 0;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_channel *next_chan;
+ enum mac80211_scan_state next_scan_state;
/*
* check if at least one STA interface is associated,
@@ -620,10 +622,18 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
usecs_to_jiffies(min_beacon_int * 1024) *
local->hw.conf.listen_interval);
- if (associated && (!tx_empty || bad_latency || listen_int_exceeded))
- local->next_scan_state = SCAN_SUSPEND;
- else
- local->next_scan_state = SCAN_SET_CHANNEL;
+ if (associated && !tx_empty) {
+ if (local->scan_req->flags & NL80211_SCAN_FLAG_LOW_PRIORITY)
+ next_scan_state = SCAN_ABORT;
+ else
+ next_scan_state = SCAN_SUSPEND;
+ } else if (associated && (bad_latency || listen_int_exceeded)) {
+ next_scan_state = SCAN_SUSPEND;
+ } else {
+ next_scan_state = SCAN_SET_CHANNEL;
+ }
+
+ local->next_scan_state = next_scan_state;
*next_delay = 0;
}
@@ -794,6 +804,9 @@ void ieee80211_scan_work(struct work_struct *work)
case SCAN_RESUME:
ieee80211_scan_state_resume(local, &next_delay);
break;
+ case SCAN_ABORT:
+ aborted = true;
+ goto out_complete;
}
} while (next_delay == 0);
@@ -918,7 +931,10 @@ int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_sched_scan_ies sched_scan_ies = {};
- int ret, i;
+ int ret, i, iebufsz;
+
+ iebufsz = 2 + IEEE80211_MAX_SSID_LEN +
+ local->scan_ies_len + req->ie_len;
mutex_lock(&local->mtx);
@@ -936,10 +952,7 @@ int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
if (!local->hw.wiphy->bands[i])
continue;
- sched_scan_ies.ie[i] = kzalloc(2 + IEEE80211_MAX_SSID_LEN +
- local->scan_ies_len +
- req->ie_len,
- GFP_KERNEL);
+ sched_scan_ies.ie[i] = kzalloc(iebufsz, GFP_KERNEL);
if (!sched_scan_ies.ie[i]) {
ret = -ENOMEM;
goto out_free;
@@ -947,8 +960,8 @@ int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
sched_scan_ies.len[i] =
ieee80211_build_preq_ies(local, sched_scan_ies.ie[i],
- req->ie, req->ie_len, i,
- (u32) -1, 0);
+ iebufsz, req->ie, req->ie_len,
+ i, (u32) -1, 0);
}
ret = drv_sched_scan_start(local, sdata, req, &sched_scan_ies);
generated by cgit (git 2.34.1) at 2024-06-09 21:59:30 +0000