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-rw-r--r--net/wireless/scan.c174
1 files changed, 130 insertions, 44 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index bd4dd75e4..3f49f5c69 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -830,10 +830,47 @@ static int cfg80211_scan_6ghz(struct cfg80211_registered_device *rdev)
list_for_each_entry(intbss, &rdev->bss_list, list) {
struct cfg80211_bss *res = &intbss->pub;
const struct cfg80211_bss_ies *ies;
+ const struct element *ssid_elem;
+ struct cfg80211_colocated_ap *entry;
+ u32 s_ssid_tmp;
+ int ret;
ies = rcu_access_pointer(res->ies);
count += cfg80211_parse_colocated_ap(ies,
&coloc_ap_list);
+
+ /* In case the scan request specified a specific BSSID
+ * and the BSS is found and operating on 6GHz band then
+ * add this AP to the collocated APs list.
+ * This is relevant for ML probe requests when the lower
+ * band APs have not been discovered.
+ */
+ if (is_broadcast_ether_addr(rdev_req->bssid) ||
+ !ether_addr_equal(rdev_req->bssid, res->bssid) ||
+ res->channel->band != NL80211_BAND_6GHZ)
+ continue;
+
+ ret = cfg80211_calc_short_ssid(ies, &ssid_elem,
+ &s_ssid_tmp);
+ if (ret)
+ continue;
+
+ entry = kzalloc(sizeof(*entry) + IEEE80211_MAX_SSID_LEN,
+ GFP_ATOMIC);
+
+ if (!entry)
+ continue;
+
+ memcpy(entry->bssid, res->bssid, ETH_ALEN);
+ entry->short_ssid = s_ssid_tmp;
+ memcpy(entry->ssid, ssid_elem->data,
+ ssid_elem->datalen);
+ entry->ssid_len = ssid_elem->datalen;
+ entry->short_ssid_valid = true;
+ entry->center_freq = res->channel->center_freq;
+
+ list_add_tail(&entry->list, &coloc_ap_list);
+ count++;
}
spin_unlock_bh(&rdev->bss_lock);
}
@@ -1642,8 +1679,6 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *rdev,
continue;
if (bss->pub.channel != new->pub.channel)
continue;
- if (bss->pub.scan_width != new->pub.scan_width)
- continue;
if (rcu_access_pointer(bss->pub.beacon_ies))
continue;
ies = rcu_access_pointer(bss->pub.ies);
@@ -1690,6 +1725,61 @@ static void cfg80211_update_hidden_bsses(struct cfg80211_internal_bss *known,
}
}
+static void cfg80211_check_stuck_ecsa(struct cfg80211_registered_device *rdev,
+ struct cfg80211_internal_bss *known,
+ const struct cfg80211_bss_ies *old)
+{
+ const struct ieee80211_ext_chansw_ie *ecsa;
+ const struct element *elem_new, *elem_old;
+ const struct cfg80211_bss_ies *new, *bcn;
+
+ if (known->pub.proberesp_ecsa_stuck)
+ return;
+
+ new = rcu_dereference_protected(known->pub.proberesp_ies,
+ lockdep_is_held(&rdev->bss_lock));
+ if (WARN_ON(!new))
+ return;
+
+ if (new->tsf - old->tsf < USEC_PER_SEC)
+ return;
+
+ elem_old = cfg80211_find_elem(WLAN_EID_EXT_CHANSWITCH_ANN,
+ old->data, old->len);
+ if (!elem_old)
+ return;
+
+ elem_new = cfg80211_find_elem(WLAN_EID_EXT_CHANSWITCH_ANN,
+ new->data, new->len);
+ if (!elem_new)
+ return;
+
+ bcn = rcu_dereference_protected(known->pub.beacon_ies,
+ lockdep_is_held(&rdev->bss_lock));
+ if (bcn &&
+ cfg80211_find_elem(WLAN_EID_EXT_CHANSWITCH_ANN,
+ bcn->data, bcn->len))
+ return;
+
+ if (elem_new->datalen != elem_old->datalen)
+ return;
+ if (elem_new->datalen < sizeof(struct ieee80211_ext_chansw_ie))
+ return;
+ if (memcmp(elem_new->data, elem_old->data, elem_new->datalen))
+ return;
+
+ ecsa = (void *)elem_new->data;
+
+ if (!ecsa->mode)
+ return;
+
+ if (ecsa->new_ch_num !=
+ ieee80211_frequency_to_channel(known->pub.channel->center_freq))
+ return;
+
+ known->pub.proberesp_ecsa_stuck = 1;
+}
+
static bool
cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
struct cfg80211_internal_bss *known,
@@ -1709,9 +1799,13 @@ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
/* Override possible earlier Beacon frame IEs */
rcu_assign_pointer(known->pub.ies,
new->pub.proberesp_ies);
- if (old)
+ if (old) {
+ cfg80211_check_stuck_ecsa(rdev, known, old);
kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
- } else if (rcu_access_pointer(new->pub.beacon_ies)) {
+ }
+ }
+
+ if (rcu_access_pointer(new->pub.beacon_ies)) {
const struct cfg80211_bss_ies *old;
if (known->pub.hidden_beacon_bss &&
@@ -1829,8 +1923,12 @@ __cfg80211_bss_update(struct cfg80211_registered_device *rdev,
list_add(&new->hidden_list,
&hidden->hidden_list);
hidden->refcount++;
+
+ ies = (void *)rcu_access_pointer(new->pub.beacon_ies);
rcu_assign_pointer(new->pub.beacon_ies,
hidden->pub.beacon_ies);
+ if (ies)
+ kfree_rcu(ies, rcu_head);
}
} else {
/*
@@ -1940,8 +2038,7 @@ EXPORT_SYMBOL(cfg80211_get_ies_channel_number);
*/
static struct ieee80211_channel *
cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
- struct ieee80211_channel *channel,
- enum nl80211_bss_scan_width scan_width)
+ struct ieee80211_channel *channel)
{
u32 freq;
int channel_number;
@@ -1981,16 +2078,6 @@ cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
return channel;
}
- if (scan_width == NL80211_BSS_CHAN_WIDTH_10 ||
- scan_width == NL80211_BSS_CHAN_WIDTH_5) {
- /*
- * Ignore channel number in 5 and 10 MHz channels where there
- * may not be an n:1 or 1:n mapping between frequencies and
- * channel numbers.
- */
- return channel;
- }
-
/*
* Use the channel determined through the payload channel number
* instead of the RX channel reported by the driver.
@@ -2050,14 +2137,12 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy,
channel = data->channel;
if (!channel)
channel = cfg80211_get_bss_channel(wiphy, data->ie, data->ielen,
- drv_data->chan,
- drv_data->scan_width);
+ drv_data->chan);
if (!channel)
return NULL;
memcpy(tmp.pub.bssid, data->bssid, ETH_ALEN);
tmp.pub.channel = channel;
- tmp.pub.scan_width = drv_data->scan_width;
if (data->bss_source != BSS_SOURCE_STA_PROFILE)
tmp.pub.signal = drv_data->signal;
else
@@ -2833,8 +2918,7 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy,
variable = ext->u.s1g_beacon.variable;
}
- channel = cfg80211_get_bss_channel(wiphy, variable,
- ielen, data->chan, data->scan_width);
+ channel = cfg80211_get_bss_channel(wiphy, variable, ielen, data->chan);
if (!channel)
return NULL;
@@ -2887,7 +2971,6 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy,
tmp.pub.beacon_interval = beacon_int;
tmp.pub.capability = capability;
tmp.pub.channel = channel;
- tmp.pub.scan_width = data->scan_width;
tmp.pub.signal = data->signal;
tmp.ts_boottime = data->boottime_ns;
tmp.parent_tsf = data->parent_tsf;
@@ -3441,59 +3524,63 @@ ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info,
cfg = (u8 *)ie + 2;
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "Mesh Network Path Selection Protocol ID: "
- "0x%02X", cfg[0]);
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf,
+ "Mesh Network Path Selection Protocol ID: 0x%02X",
+ cfg[0]);
current_ev = iwe_stream_add_point_check(info,
current_ev,
end_buf,
&iwe, buf);
if (IS_ERR(current_ev))
goto unlock;
- sprintf(buf, "Path Selection Metric ID: 0x%02X",
- cfg[1]);
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf,
+ "Path Selection Metric ID: 0x%02X",
+ cfg[1]);
current_ev = iwe_stream_add_point_check(info,
current_ev,
end_buf,
&iwe, buf);
if (IS_ERR(current_ev))
goto unlock;
- sprintf(buf, "Congestion Control Mode ID: 0x%02X",
- cfg[2]);
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf,
+ "Congestion Control Mode ID: 0x%02X",
+ cfg[2]);
current_ev = iwe_stream_add_point_check(info,
current_ev,
end_buf,
&iwe, buf);
if (IS_ERR(current_ev))
goto unlock;
- sprintf(buf, "Synchronization ID: 0x%02X", cfg[3]);
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf,
+ "Synchronization ID: 0x%02X",
+ cfg[3]);
current_ev = iwe_stream_add_point_check(info,
current_ev,
end_buf,
&iwe, buf);
if (IS_ERR(current_ev))
goto unlock;
- sprintf(buf, "Authentication ID: 0x%02X", cfg[4]);
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf,
+ "Authentication ID: 0x%02X",
+ cfg[4]);
current_ev = iwe_stream_add_point_check(info,
current_ev,
end_buf,
&iwe, buf);
if (IS_ERR(current_ev))
goto unlock;
- sprintf(buf, "Formation Info: 0x%02X", cfg[5]);
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf,
+ "Formation Info: 0x%02X",
+ cfg[5]);
current_ev = iwe_stream_add_point_check(info,
current_ev,
end_buf,
&iwe, buf);
if (IS_ERR(current_ev))
goto unlock;
- sprintf(buf, "Capabilities: 0x%02X", cfg[6]);
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf,
+ "Capabilities: 0x%02X",
+ cfg[6]);
current_ev = iwe_stream_add_point_check(info,
current_ev,
end_buf,
@@ -3549,17 +3636,16 @@ ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info,
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "tsf=%016llx", (unsigned long long)(ies->tsf));
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf, "tsf=%016llx",
+ (unsigned long long)(ies->tsf));
current_ev = iwe_stream_add_point_check(info, current_ev, end_buf,
&iwe, buf);
if (IS_ERR(current_ev))
goto unlock;
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = IWEVCUSTOM;
- sprintf(buf, " Last beacon: %ums ago",
- elapsed_jiffies_msecs(bss->ts));
- iwe.u.data.length = strlen(buf);
+ iwe.u.data.length = sprintf(buf, " Last beacon: %ums ago",
+ elapsed_jiffies_msecs(bss->ts));
current_ev = iwe_stream_add_point_check(info, current_ev,
end_buf, &iwe, buf);
if (IS_ERR(current_ev))
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-02 19:34:08 +0000