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-rw-r--r--net/wireless/chan.c390
1 files changed, 231 insertions, 159 deletions
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index eb822052d344..0e5835cd8c61 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -6,7 +6,7 @@
*
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
- * Copyright 2018-2021 Intel Corporation
+ * Copyright 2018-2022 Intel Corporation
*/
#include <linux/export.h>
@@ -181,6 +181,9 @@ static int nl80211_chan_width_to_mhz(enum nl80211_chan_width chan_width)
case NL80211_CHAN_WIDTH_160:
mhz = 160;
break;
+ case NL80211_CHAN_WIDTH_320:
+ mhz = 320;
+ break;
default:
WARN_ON_ONCE(1);
return -1;
@@ -271,6 +274,17 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
case NL80211_CHAN_WIDTH_16:
/* all checked above */
break;
+ case NL80211_CHAN_WIDTH_320:
+ if (chandef->center_freq1 == control_freq + 150 ||
+ chandef->center_freq1 == control_freq + 130 ||
+ chandef->center_freq1 == control_freq + 110 ||
+ chandef->center_freq1 == control_freq + 90 ||
+ chandef->center_freq1 == control_freq - 90 ||
+ chandef->center_freq1 == control_freq - 110 ||
+ chandef->center_freq1 == control_freq - 130 ||
+ chandef->center_freq1 == control_freq - 150)
+ break;
+ fallthrough;
case NL80211_CHAN_WIDTH_160:
if (chandef->center_freq1 == control_freq + 70 ||
chandef->center_freq1 == control_freq + 50 ||
@@ -307,7 +321,7 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
EXPORT_SYMBOL(cfg80211_chandef_valid);
static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
- u32 *pri40, u32 *pri80)
+ u32 *pri40, u32 *pri80, u32 *pri160)
{
int tmp;
@@ -315,9 +329,11 @@ static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
case NL80211_CHAN_WIDTH_40:
*pri40 = c->center_freq1;
*pri80 = 0;
+ *pri160 = 0;
break;
case NL80211_CHAN_WIDTH_80:
case NL80211_CHAN_WIDTH_80P80:
+ *pri160 = 0;
*pri80 = c->center_freq1;
/* n_P20 */
tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
@@ -327,6 +343,7 @@ static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
*pri40 = c->center_freq1 - 20 + 40 * tmp;
break;
case NL80211_CHAN_WIDTH_160:
+ *pri160 = c->center_freq1;
/* n_P20 */
tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
/* n_P40 */
@@ -337,6 +354,20 @@ static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
tmp /= 2;
*pri80 = c->center_freq1 - 40 + 80 * tmp;
break;
+ case NL80211_CHAN_WIDTH_320:
+ /* n_P20 */
+ tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
+ /* n_P40 */
+ tmp /= 2;
+ /* freq_P40 */
+ *pri40 = c->center_freq1 - 140 + 40 * tmp;
+ /* n_P80 */
+ tmp /= 2;
+ *pri80 = c->center_freq1 - 120 + 80 * tmp;
+ /* n_P160 */
+ tmp /= 2;
+ *pri160 = c->center_freq1 - 80 + 160 * tmp;
+ break;
default:
WARN_ON_ONCE(1);
}
@@ -346,7 +377,7 @@ const struct cfg80211_chan_def *
cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
const struct cfg80211_chan_def *c2)
{
- u32 c1_pri40, c1_pri80, c2_pri40, c2_pri80;
+ u32 c1_pri40, c1_pri80, c2_pri40, c2_pri80, c1_pri160, c2_pri160;
/* If they are identical, return */
if (cfg80211_chandef_identical(c1, c2))
@@ -381,14 +412,31 @@ cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
c2->width == NL80211_CHAN_WIDTH_20)
return c1;
- chandef_primary_freqs(c1, &c1_pri40, &c1_pri80);
- chandef_primary_freqs(c2, &c2_pri40, &c2_pri80);
+ chandef_primary_freqs(c1, &c1_pri40, &c1_pri80, &c1_pri160);
+ chandef_primary_freqs(c2, &c2_pri40, &c2_pri80, &c2_pri160);
if (c1_pri40 != c2_pri40)
return NULL;
- WARN_ON(!c1_pri80 && !c2_pri80);
- if (c1_pri80 && c2_pri80 && c1_pri80 != c2_pri80)
+ if (c1->width == NL80211_CHAN_WIDTH_40)
+ return c2;
+
+ if (c2->width == NL80211_CHAN_WIDTH_40)
+ return c1;
+
+ if (c1_pri80 != c2_pri80)
+ return NULL;
+
+ if (c1->width == NL80211_CHAN_WIDTH_80 &&
+ c2->width > NL80211_CHAN_WIDTH_80)
+ return c2;
+
+ if (c2->width == NL80211_CHAN_WIDTH_80 &&
+ c1->width > NL80211_CHAN_WIDTH_80)
+ return c1;
+
+ WARN_ON(!c1_pri160 && !c2_pri160);
+ if (c1_pri160 && c2_pri160 && c1_pri160 != c2_pri160)
return NULL;
if (c1->width > c2->width)
@@ -624,14 +672,21 @@ bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
* range of chandef.
*/
bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
- struct ieee80211_channel *chan)
+ struct ieee80211_channel *chan,
+ bool primary_only)
{
int width;
u32 freq;
+ if (!chandef->chan)
+ return false;
+
if (chandef->chan->center_freq == chan->center_freq)
return true;
+ if (primary_only)
+ return false;
+
width = cfg80211_chandef_get_width(chandef);
if (width <= 20)
return false;
@@ -656,23 +711,25 @@ bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev)
{
- bool active = false;
+ unsigned int link;
ASSERT_WDEV_LOCK(wdev);
- if (!wdev->chandef.chan)
- return false;
-
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
- active = wdev->beacon_interval != 0;
+ for_each_valid_link(wdev, link) {
+ if (wdev->links[link].ap.beacon_interval)
+ return true;
+ }
break;
case NL80211_IFTYPE_ADHOC:
- active = wdev->ssid_len != 0;
+ if (wdev->u.ibss.ssid_len)
+ return true;
break;
case NL80211_IFTYPE_MESH_POINT:
- active = wdev->mesh_id_len != 0;
+ if (wdev->u.mesh.id_len)
+ return true;
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_OCB:
@@ -689,7 +746,35 @@ bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev)
WARN_ON(1);
}
- return active;
+ return false;
+}
+
+bool cfg80211_wdev_on_sub_chan(struct wireless_dev *wdev,
+ struct ieee80211_channel *chan,
+ bool primary_only)
+{
+ unsigned int link;
+
+ switch (wdev->iftype) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_P2P_GO:
+ for_each_valid_link(wdev, link) {
+ if (cfg80211_is_sub_chan(&wdev->links[link].ap.chandef,
+ chan, primary_only))
+ return true;
+ }
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ return cfg80211_is_sub_chan(&wdev->u.ibss.chandef, chan,
+ primary_only);
+ case NL80211_IFTYPE_MESH_POINT:
+ return cfg80211_is_sub_chan(&wdev->u.mesh.chandef, chan,
+ primary_only);
+ default:
+ break;
+ }
+
+ return false;
}
static bool cfg80211_is_wiphy_oper_chan(struct wiphy *wiphy,
@@ -704,7 +789,7 @@ static bool cfg80211_is_wiphy_oper_chan(struct wiphy *wiphy,
continue;
}
- if (cfg80211_is_sub_chan(&wdev->chandef, chan)) {
+ if (cfg80211_wdev_on_sub_chan(wdev, chan, false)) {
wdev_unlock(wdev);
return true;
}
@@ -724,7 +809,8 @@ cfg80211_offchan_chain_is_active(struct cfg80211_registered_device *rdev,
if (!cfg80211_chandef_valid(&rdev->background_radar_chandef))
return false;
- return cfg80211_is_sub_chan(&rdev->background_radar_chandef, channel);
+ return cfg80211_is_sub_chan(&rdev->background_radar_chandef, channel,
+ false);
}
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
@@ -960,7 +1046,10 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
struct ieee80211_sta_vht_cap *vht_cap;
struct ieee80211_edmg *edmg_cap;
u32 width, control_freq, cap;
- bool ext_nss_cap, support_80_80 = false;
+ bool ext_nss_cap, support_80_80 = false, support_320 = false;
+ const struct ieee80211_sband_iftype_data *iftd;
+ struct ieee80211_supported_band *sband;
+ int i;
if (WARN_ON(!cfg80211_chandef_valid(chandef)))
return false;
@@ -1062,6 +1151,32 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
(vht_cap->cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)))
return false;
break;
+ case NL80211_CHAN_WIDTH_320:
+ prohibited_flags |= IEEE80211_CHAN_NO_320MHZ;
+ width = 320;
+
+ if (chandef->chan->band != NL80211_BAND_6GHZ)
+ return false;
+
+ sband = wiphy->bands[NL80211_BAND_6GHZ];
+ if (!sband)
+ return false;
+
+ for (i = 0; i < sband->n_iftype_data; i++) {
+ iftd = &sband->iftype_data[i];
+ if (!iftd->eht_cap.has_eht)
+ continue;
+
+ if (iftd->eht_cap.eht_cap_elem.phy_cap_info[0] &
+ IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ) {
+ support_320 = true;
+ break;
+ }
+ }
+
+ if (!support_320)
+ return false;
+ break;
default:
WARN_ON_ONCE(1);
return false;
@@ -1099,6 +1214,68 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
}
EXPORT_SYMBOL(cfg80211_chandef_usable);
+static bool cfg80211_ir_permissive_check_wdev(enum nl80211_iftype iftype,
+ struct wireless_dev *wdev,
+ struct ieee80211_channel *chan)
+{
+ struct ieee80211_channel *other_chan = NULL;
+ unsigned int link_id;
+ int r1, r2;
+
+ for_each_valid_link(wdev, link_id) {
+ if (wdev->iftype == NL80211_IFTYPE_STATION &&
+ wdev->links[link_id].client.current_bss)
+ other_chan = wdev->links[link_id].client.current_bss->pub.channel;
+
+ /*
+ * If a GO already operates on the same GO_CONCURRENT channel,
+ * this one (maybe the same one) can beacon as well. We allow
+ * the operation even if the station we relied on with
+ * GO_CONCURRENT is disconnected now. But then we must make sure
+ * we're not outdoor on an indoor-only channel.
+ */
+ if (iftype == NL80211_IFTYPE_P2P_GO &&
+ wdev->iftype == NL80211_IFTYPE_P2P_GO &&
+ wdev->links[link_id].ap.beacon_interval &&
+ !(chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
+ other_chan = wdev->links[link_id].ap.chandef.chan;
+
+ if (!other_chan)
+ continue;
+
+ if (chan == other_chan)
+ return true;
+
+ if (chan->band != NL80211_BAND_5GHZ &&
+ chan->band != NL80211_BAND_6GHZ)
+ continue;
+
+ r1 = cfg80211_get_unii(chan->center_freq);
+ r2 = cfg80211_get_unii(other_chan->center_freq);
+
+ if (r1 != -EINVAL && r1 == r2) {
+ /*
+ * At some locations channels 149-165 are considered a
+ * bundle, but at other locations, e.g., Indonesia,
+ * channels 149-161 are considered a bundle while
+ * channel 165 is left out and considered to be in a
+ * different bundle. Thus, in case that there is a
+ * station interface connected to an AP on channel 165,
+ * it is assumed that channels 149-161 are allowed for
+ * GO operations. However, having a station interface
+ * connected to an AP on channels 149-161, does not
+ * allow GO operation on channel 165.
+ */
+ if (chan->center_freq == 5825 &&
+ other_chan->center_freq != 5825)
+ continue;
+ return true;
+ }
+ }
+
+ return false;
+}
+
/*
* Check if the channel can be used under permissive conditions mandated by
* some regulatory bodies, i.e., the channel is marked with
@@ -1142,59 +1319,14 @@ static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
* the current registered device.
*/
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
- struct ieee80211_channel *other_chan = NULL;
- int r1, r2;
+ bool ret;
wdev_lock(wdev);
- if (wdev->iftype == NL80211_IFTYPE_STATION &&
- wdev->current_bss)
- other_chan = wdev->current_bss->pub.channel;
-
- /*
- * If a GO already operates on the same GO_CONCURRENT channel,
- * this one (maybe the same one) can beacon as well. We allow
- * the operation even if the station we relied on with
- * GO_CONCURRENT is disconnected now. But then we must make sure
- * we're not outdoor on an indoor-only channel.
- */
- if (iftype == NL80211_IFTYPE_P2P_GO &&
- wdev->iftype == NL80211_IFTYPE_P2P_GO &&
- wdev->beacon_interval &&
- !(chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
- other_chan = wdev->chandef.chan;
+ ret = cfg80211_ir_permissive_check_wdev(iftype, wdev, chan);
wdev_unlock(wdev);
- if (!other_chan)
- continue;
-
- if (chan == other_chan)
- return true;
-
- if (chan->band != NL80211_BAND_5GHZ &&
- chan->band != NL80211_BAND_6GHZ)
- continue;
-
- r1 = cfg80211_get_unii(chan->center_freq);
- r2 = cfg80211_get_unii(other_chan->center_freq);
-
- if (r1 != -EINVAL && r1 == r2) {
- /*
- * At some locations channels 149-165 are considered a
- * bundle, but at other locations, e.g., Indonesia,
- * channels 149-161 are considered a bundle while
- * channel 165 is left out and considered to be in a
- * different bundle. Thus, in case that there is a
- * station interface connected to an AP on channel 165,
- * it is assumed that channels 149-161 are allowed for
- * GO operations. However, having a station interface
- * connected to an AP on channels 149-161, does not
- * allow GO operation on channel 165.
- */
- if (chan->center_freq == 5825 &&
- other_chan->center_freq != 5825)
- continue;
- return true;
- }
+ if (ret)
+ return ret;
}
return false;
@@ -1267,97 +1399,6 @@ int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
return rdev_set_monitor_channel(rdev, chandef);
}
-void
-cfg80211_get_chan_state(struct wireless_dev *wdev,
- struct ieee80211_channel **chan,
- enum cfg80211_chan_mode *chanmode,
- u8 *radar_detect)
-{
- int ret;
-
- *chan = NULL;
- *chanmode = CHAN_MODE_UNDEFINED;
-
- ASSERT_WDEV_LOCK(wdev);
-
- if (wdev->netdev && !netif_running(wdev->netdev))
- return;
-
- switch (wdev->iftype) {
- case NL80211_IFTYPE_ADHOC:
- if (wdev->current_bss) {
- *chan = wdev->current_bss->pub.channel;
- *chanmode = (wdev->ibss_fixed &&
- !wdev->ibss_dfs_possible)
- ? CHAN_MODE_SHARED
- : CHAN_MODE_EXCLUSIVE;
-
- /* consider worst-case - IBSS can try to return to the
- * original user-specified channel as creator */
- if (wdev->ibss_dfs_possible)
- *radar_detect |= BIT(wdev->chandef.width);
- return;
- }
- break;
- case NL80211_IFTYPE_STATION:
- case NL80211_IFTYPE_P2P_CLIENT:
- if (wdev->current_bss) {
- *chan = wdev->current_bss->pub.channel;
- *chanmode = CHAN_MODE_SHARED;
- return;
- }
- break;
- case NL80211_IFTYPE_AP:
- case NL80211_IFTYPE_P2P_GO:
- if (wdev->cac_started) {
- *chan = wdev->chandef.chan;
- *chanmode = CHAN_MODE_SHARED;
- *radar_detect |= BIT(wdev->chandef.width);
- } else if (wdev->beacon_interval) {
- *chan = wdev->chandef.chan;
- *chanmode = CHAN_MODE_SHARED;
-
- ret = cfg80211_chandef_dfs_required(wdev->wiphy,
- &wdev->chandef,
- wdev->iftype);
- WARN_ON(ret < 0);
- if (ret > 0)
- *radar_detect |= BIT(wdev->chandef.width);
- }
- return;
- case NL80211_IFTYPE_MESH_POINT:
- if (wdev->mesh_id_len) {
- *chan = wdev->chandef.chan;
- *chanmode = CHAN_MODE_SHARED;
-
- ret = cfg80211_chandef_dfs_required(wdev->wiphy,
- &wdev->chandef,
- wdev->iftype);
- WARN_ON(ret < 0);
- if (ret > 0)
- *radar_detect |= BIT(wdev->chandef.width);
- }
- return;
- case NL80211_IFTYPE_OCB:
- if (wdev->chandef.chan) {
- *chan = wdev->chandef.chan;
- *chanmode = CHAN_MODE_SHARED;
- return;
- }
- break;
- case NL80211_IFTYPE_MONITOR:
- case NL80211_IFTYPE_AP_VLAN:
- case NL80211_IFTYPE_P2P_DEVICE:
- case NL80211_IFTYPE_NAN:
- /* these interface types don't really have a channel */
- return;
- case NL80211_IFTYPE_UNSPECIFIED:
- case NL80211_IFTYPE_WDS:
- case NUM_NL80211_IFTYPES:
- WARN_ON(1);
- }
-}
-
bool cfg80211_any_usable_channels(struct wiphy *wiphy,
unsigned long sband_mask,
u32 prohibited_flags)
@@ -1388,3 +1429,34 @@ bool cfg80211_any_usable_channels(struct wiphy *wiphy,
return false;
}
EXPORT_SYMBOL(cfg80211_any_usable_channels);
+
+struct cfg80211_chan_def *wdev_chandef(struct wireless_dev *wdev,
+ unsigned int link_id)
+{
+ /*
+ * We need to sort out the locking here - in some cases
+ * where we get here we really just don't care (yet)
+ * about the valid links, but in others we do. But we
+ * get here with various driver cases, so we cannot
+ * easily require the wdev mutex.
+ */
+ if (link_id || wdev->valid_links & BIT(0)) {
+ ASSERT_WDEV_LOCK(wdev);
+ WARN_ON(!(wdev->valid_links & BIT(link_id)));
+ }
+
+ switch (wdev->iftype) {
+ case NL80211_IFTYPE_MESH_POINT:
+ return &wdev->u.mesh.chandef;
+ case NL80211_IFTYPE_ADHOC:
+ return &wdev->u.ibss.chandef;
+ case NL80211_IFTYPE_OCB:
+ return &wdev->u.ocb.chandef;
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_P2P_GO:
+ return &wdev->links[link_id].ap.chandef;
+ default:
+ return NULL;
+ }
+}
+EXPORT_SYMBOL(wdev_chandef);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.