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-rw-r--r--net/wireless/chan.c710
1 files changed, 463 insertions, 247 deletions
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index fcac5c6366e1..0e5835cd8c61 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -6,10 +6,11 @@
*
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
- * Copyright 2018 Intel Corporation
+ * Copyright 2018-2022 Intel Corporation
*/
#include <linux/export.h>
+#include <linux/bitfield.h>
#include <net/cfg80211.h>
#include "core.h"
#include "rdev-ops.h"
@@ -27,6 +28,7 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
return;
chandef->chan = chan;
+ chandef->freq1_offset = chan->freq_offset;
chandef->center_freq2 = 0;
chandef->edmg.bw_config = 0;
chandef->edmg.channels = 0;
@@ -139,13 +141,72 @@ static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
return true;
}
+static int nl80211_chan_width_to_mhz(enum nl80211_chan_width chan_width)
+{
+ int mhz;
+
+ switch (chan_width) {
+ case NL80211_CHAN_WIDTH_1:
+ mhz = 1;
+ break;
+ case NL80211_CHAN_WIDTH_2:
+ mhz = 2;
+ break;
+ case NL80211_CHAN_WIDTH_4:
+ mhz = 4;
+ break;
+ case NL80211_CHAN_WIDTH_8:
+ mhz = 8;
+ break;
+ case NL80211_CHAN_WIDTH_16:
+ mhz = 16;
+ break;
+ case NL80211_CHAN_WIDTH_5:
+ mhz = 5;
+ break;
+ case NL80211_CHAN_WIDTH_10:
+ mhz = 10;
+ break;
+ case NL80211_CHAN_WIDTH_20:
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ mhz = 20;
+ break;
+ case NL80211_CHAN_WIDTH_40:
+ mhz = 40;
+ break;
+ case NL80211_CHAN_WIDTH_80P80:
+ case NL80211_CHAN_WIDTH_80:
+ mhz = 80;
+ break;
+ case NL80211_CHAN_WIDTH_160:
+ mhz = 160;
+ break;
+ case NL80211_CHAN_WIDTH_320:
+ mhz = 320;
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return -1;
+ }
+ return mhz;
+}
+
+static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
+{
+ return nl80211_chan_width_to_mhz(c->width);
+}
+
bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
{
- u32 control_freq;
+ u32 control_freq, oper_freq;
+ int oper_width, control_width;
if (!chandef->chan)
return false;
+ if (chandef->freq1_offset >= 1000)
+ return false;
+
control_freq = chandef->chan->center_freq;
switch (chandef->width) {
@@ -153,24 +214,41 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
case NL80211_CHAN_WIDTH_10:
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_20_NOHT:
- if (chandef->center_freq1 != control_freq)
+ if (ieee80211_chandef_to_khz(chandef) !=
+ ieee80211_channel_to_khz(chandef->chan))
return false;
if (chandef->center_freq2)
return false;
break;
- case NL80211_CHAN_WIDTH_40:
- if (chandef->center_freq1 != control_freq + 10 &&
- chandef->center_freq1 != control_freq - 10)
+ case NL80211_CHAN_WIDTH_1:
+ case NL80211_CHAN_WIDTH_2:
+ case NL80211_CHAN_WIDTH_4:
+ case NL80211_CHAN_WIDTH_8:
+ case NL80211_CHAN_WIDTH_16:
+ if (chandef->chan->band != NL80211_BAND_S1GHZ)
+ return false;
+
+ control_freq = ieee80211_channel_to_khz(chandef->chan);
+ oper_freq = ieee80211_chandef_to_khz(chandef);
+ control_width = nl80211_chan_width_to_mhz(
+ ieee80211_s1g_channel_width(
+ chandef->chan));
+ oper_width = cfg80211_chandef_get_width(chandef);
+
+ if (oper_width < 0 || control_width < 0)
return false;
if (chandef->center_freq2)
return false;
+
+ if (control_freq + MHZ_TO_KHZ(control_width) / 2 >
+ oper_freq + MHZ_TO_KHZ(oper_width) / 2)
+ return false;
+
+ if (control_freq - MHZ_TO_KHZ(control_width) / 2 <
+ oper_freq - MHZ_TO_KHZ(oper_width) / 2)
+ return false;
break;
case NL80211_CHAN_WIDTH_80P80:
- if (chandef->center_freq1 != control_freq + 30 &&
- chandef->center_freq1 != control_freq + 10 &&
- chandef->center_freq1 != control_freq - 10 &&
- chandef->center_freq1 != control_freq - 30)
- return false;
if (!chandef->center_freq2)
return false;
/* adjacent is not allowed -- that's a 160 MHz channel */
@@ -178,28 +256,53 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
chandef->center_freq2 - chandef->center_freq1 == 80)
return false;
break;
- case NL80211_CHAN_WIDTH_80:
- if (chandef->center_freq1 != control_freq + 30 &&
- chandef->center_freq1 != control_freq + 10 &&
- chandef->center_freq1 != control_freq - 10 &&
- chandef->center_freq1 != control_freq - 30)
- return false;
+ default:
if (chandef->center_freq2)
return false;
break;
- case NL80211_CHAN_WIDTH_160:
- if (chandef->center_freq1 != control_freq + 70 &&
- chandef->center_freq1 != control_freq + 50 &&
- chandef->center_freq1 != control_freq + 30 &&
- chandef->center_freq1 != control_freq + 10 &&
- chandef->center_freq1 != control_freq - 10 &&
- chandef->center_freq1 != control_freq - 30 &&
- chandef->center_freq1 != control_freq - 50 &&
- chandef->center_freq1 != control_freq - 70)
- return false;
- if (chandef->center_freq2)
- return false;
+ }
+
+ switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_5:
+ case NL80211_CHAN_WIDTH_10:
+ case NL80211_CHAN_WIDTH_20:
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ case NL80211_CHAN_WIDTH_1:
+ case NL80211_CHAN_WIDTH_2:
+ case NL80211_CHAN_WIDTH_4:
+ case NL80211_CHAN_WIDTH_8:
+ 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 ||
+ chandef->center_freq1 == control_freq - 50 ||
+ chandef->center_freq1 == control_freq - 70)
+ break;
+ fallthrough;
+ case NL80211_CHAN_WIDTH_80P80:
+ case NL80211_CHAN_WIDTH_80:
+ if (chandef->center_freq1 == control_freq + 30 ||
+ chandef->center_freq1 == control_freq - 30)
+ break;
+ fallthrough;
+ case NL80211_CHAN_WIDTH_40:
+ if (chandef->center_freq1 == control_freq + 10 ||
+ chandef->center_freq1 == control_freq - 10)
+ break;
+ fallthrough;
default:
return false;
}
@@ -218,7 +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;
@@ -226,9 +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;
@@ -238,6 +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 */
@@ -248,48 +354,30 @@ static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
tmp /= 2;
*pri80 = c->center_freq1 - 40 + 80 * tmp;
break;
- default:
- WARN_ON_ONCE(1);
- }
-}
-
-static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
-{
- int width;
-
- switch (c->width) {
- case NL80211_CHAN_WIDTH_5:
- width = 5;
- break;
- case NL80211_CHAN_WIDTH_10:
- width = 10;
- break;
- case NL80211_CHAN_WIDTH_20:
- case NL80211_CHAN_WIDTH_20_NOHT:
- width = 20;
- break;
- case NL80211_CHAN_WIDTH_40:
- width = 40;
- break;
- case NL80211_CHAN_WIDTH_80P80:
- case NL80211_CHAN_WIDTH_80:
- width = 80;
- break;
- case NL80211_CHAN_WIDTH_160:
- width = 160;
+ 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);
- return -1;
}
- return width;
}
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))
@@ -324,14 +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)
@@ -386,10 +491,11 @@ static u32 cfg80211_get_start_freq(u32 center_freq,
{
u32 start_freq;
- if (bandwidth <= 20)
+ bandwidth = MHZ_TO_KHZ(bandwidth);
+ if (bandwidth <= MHZ_TO_KHZ(20))
start_freq = center_freq;
else
- start_freq = center_freq - bandwidth/2 + 10;
+ start_freq = center_freq - bandwidth / 2 + MHZ_TO_KHZ(10);
return start_freq;
}
@@ -399,10 +505,11 @@ static u32 cfg80211_get_end_freq(u32 center_freq,
{
u32 end_freq;
- if (bandwidth <= 20)
+ bandwidth = MHZ_TO_KHZ(bandwidth);
+ if (bandwidth <= MHZ_TO_KHZ(20))
end_freq = center_freq;
else
- end_freq = center_freq + bandwidth/2 - 10;
+ end_freq = center_freq + bandwidth / 2 - MHZ_TO_KHZ(10);
return end_freq;
}
@@ -417,8 +524,8 @@ static int cfg80211_get_chans_dfs_required(struct wiphy *wiphy,
start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
- for (freq = start_freq; freq <= end_freq; freq += 20) {
- c = ieee80211_get_channel(wiphy, freq);
+ for (freq = start_freq; freq <= end_freq; freq += MHZ_TO_KHZ(20)) {
+ c = ieee80211_get_channel_khz(wiphy, freq);
if (!c)
return -EINVAL;
@@ -449,8 +556,8 @@ int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
return -EINVAL;
ret = cfg80211_get_chans_dfs_required(wiphy,
- chandef->center_freq1,
- width);
+ ieee80211_chandef_to_khz(chandef),
+ width);
if (ret < 0)
return ret;
else if (ret > 0)
@@ -460,8 +567,8 @@ int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
return 0;
ret = cfg80211_get_chans_dfs_required(wiphy,
- chandef->center_freq2,
- width);
+ MHZ_TO_KHZ(chandef->center_freq2),
+ width);
if (ret < 0)
return ret;
else if (ret > 0)
@@ -473,10 +580,10 @@ int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_MONITOR:
case NL80211_IFTYPE_AP_VLAN:
- case NL80211_IFTYPE_WDS:
case NL80211_IFTYPE_P2P_DEVICE:
case NL80211_IFTYPE_NAN:
break;
+ case NL80211_IFTYPE_WDS:
case NL80211_IFTYPE_UNSPECIFIED:
case NUM_NL80211_IFTYPES:
WARN_ON(1);
@@ -503,8 +610,8 @@ static int cfg80211_get_chans_dfs_usable(struct wiphy *wiphy,
* DFS_AVAILABLE). Return number of usable channels
* (require CAC). Allow DFS and non-DFS channel mix.
*/
- for (freq = start_freq; freq <= end_freq; freq += 20) {
- c = ieee80211_get_channel(wiphy, freq);
+ for (freq = start_freq; freq <= end_freq; freq += MHZ_TO_KHZ(20)) {
+ c = ieee80211_get_channel_khz(wiphy, freq);
if (!c)
return -EINVAL;
@@ -536,8 +643,9 @@ bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
if (width < 0)
return false;
- r1 = cfg80211_get_chans_dfs_usable(wiphy, chandef->center_freq1,
- width);
+ r1 = cfg80211_get_chans_dfs_usable(wiphy,
+ MHZ_TO_KHZ(chandef->center_freq1),
+ width);
if (r1 < 0)
return false;
@@ -546,8 +654,8 @@ bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
case NL80211_CHAN_WIDTH_80P80:
WARN_ON(!chandef->center_freq2);
r2 = cfg80211_get_chans_dfs_usable(wiphy,
- chandef->center_freq2,
- width);
+ MHZ_TO_KHZ(chandef->center_freq2),
+ width);
if (r2 < 0)
return false;
break;
@@ -564,14 +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;
@@ -596,40 +711,70 @@ 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:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_MONITOR:
case NL80211_IFTYPE_AP_VLAN:
- case NL80211_IFTYPE_WDS:
case NL80211_IFTYPE_P2P_DEVICE:
/* Can NAN type be considered as beaconing interface? */
case NL80211_IFTYPE_NAN:
break;
case NL80211_IFTYPE_UNSPECIFIED:
+ case NL80211_IFTYPE_WDS:
case NUM_NL80211_IFTYPES:
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,
@@ -644,7 +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;
}
@@ -654,6 +799,20 @@ static bool cfg80211_is_wiphy_oper_chan(struct wiphy *wiphy,
return false;
}
+static bool
+cfg80211_offchan_chain_is_active(struct cfg80211_registered_device *rdev,
+ struct ieee80211_channel *channel)
+{
+ if (!rdev->background_radar_wdev)
+ return false;
+
+ if (!cfg80211_chandef_valid(&rdev->background_radar_chandef))
+ return false;
+
+ return cfg80211_is_sub_chan(&rdev->background_radar_chandef, channel,
+ false);
+}
+
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
struct ieee80211_channel *chan)
{
@@ -670,6 +829,9 @@ bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
if (cfg80211_is_wiphy_oper_chan(&rdev->wiphy, chan))
return true;
+
+ if (cfg80211_offchan_chain_is_active(rdev, chan))
+ return true;
}
return false;
@@ -694,8 +856,8 @@ static bool cfg80211_get_chans_dfs_available(struct wiphy *wiphy,
* If any channel in between is disabled or has not
* had gone through CAC return false
*/
- for (freq = start_freq; freq <= end_freq; freq += 20) {
- c = ieee80211_get_channel(wiphy, freq);
+ for (freq = start_freq; freq <= end_freq; freq += MHZ_TO_KHZ(20)) {
+ c = ieee80211_get_channel_khz(wiphy, freq);
if (!c)
return false;
@@ -724,7 +886,8 @@ static bool cfg80211_chandef_dfs_available(struct wiphy *wiphy,
if (width < 0)
return false;
- r = cfg80211_get_chans_dfs_available(wiphy, chandef->center_freq1,
+ r = cfg80211_get_chans_dfs_available(wiphy,
+ MHZ_TO_KHZ(chandef->center_freq1),
width);
/* If any of channels unavailable for cf1 just return */
@@ -735,8 +898,8 @@ static bool cfg80211_chandef_dfs_available(struct wiphy *wiphy,
case NL80211_CHAN_WIDTH_80P80:
WARN_ON(!chandef->center_freq2);
r = cfg80211_get_chans_dfs_available(wiphy,
- chandef->center_freq2,
- width);
+ MHZ_TO_KHZ(chandef->center_freq2),
+ width);
break;
default:
WARN_ON(chandef->center_freq2);
@@ -757,8 +920,8 @@ static unsigned int cfg80211_get_chans_dfs_cac_time(struct wiphy *wiphy,
start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
- for (freq = start_freq; freq <= end_freq; freq += 20) {
- c = ieee80211_get_channel(wiphy, freq);
+ for (freq = start_freq; freq <= end_freq; freq += MHZ_TO_KHZ(20)) {
+ c = ieee80211_get_channel_khz(wiphy, freq);
if (!c)
return 0;
@@ -790,14 +953,14 @@ cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
return 0;
t1 = cfg80211_get_chans_dfs_cac_time(wiphy,
- chandef->center_freq1,
+ MHZ_TO_KHZ(chandef->center_freq1),
width);
if (!chandef->center_freq2)
return t1;
t2 = cfg80211_get_chans_dfs_cac_time(wiphy,
- chandef->center_freq2,
+ MHZ_TO_KHZ(chandef->center_freq2),
width);
return max(t1, t2);
@@ -813,8 +976,8 @@ static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
- for (freq = start_freq; freq <= end_freq; freq += 20) {
- c = ieee80211_get_channel(wiphy, freq);
+ for (freq = start_freq; freq <= end_freq; freq += MHZ_TO_KHZ(20)) {
+ c = ieee80211_get_channel_khz(wiphy, freq);
if (!c || c->flags & prohibited_flags)
return false;
}
@@ -883,6 +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, 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;
@@ -890,6 +1057,8 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
ht_cap = &wiphy->bands[chandef->chan->band]->ht_cap;
vht_cap = &wiphy->bands[chandef->chan->band]->vht_cap;
edmg_cap = &wiphy->bands[chandef->chan->band]->edmg_cap;
+ ext_nss_cap = __le16_to_cpu(vht_cap->vht_mcs.tx_highest) &
+ IEEE80211_VHT_EXT_NSS_BW_CAPABLE;
if (edmg_cap->channels &&
!cfg80211_edmg_usable(wiphy,
@@ -902,6 +1071,21 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
control_freq = chandef->chan->center_freq;
switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_1:
+ width = 1;
+ break;
+ case NL80211_CHAN_WIDTH_2:
+ width = 2;
+ break;
+ case NL80211_CHAN_WIDTH_4:
+ width = 4;
+ break;
+ case NL80211_CHAN_WIDTH_8:
+ width = 8;
+ break;
+ case NL80211_CHAN_WIDTH_16:
+ width = 16;
+ break;
case NL80211_CHAN_WIDTH_5:
width = 5;
break;
@@ -910,15 +1094,18 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
width = 10;
break;
case NL80211_CHAN_WIDTH_20:
- if (!ht_cap->ht_supported)
+ if (!ht_cap->ht_supported &&
+ chandef->chan->band != NL80211_BAND_6GHZ)
return false;
- /* fall through */
+ fallthrough;
case NL80211_CHAN_WIDTH_20_NOHT:
prohibited_flags |= IEEE80211_CHAN_NO_20MHZ;
width = 20;
break;
case NL80211_CHAN_WIDTH_40:
width = 40;
+ if (chandef->chan->band == NL80211_BAND_6GHZ)
+ break;
if (!ht_cap->ht_supported)
return false;
if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
@@ -932,25 +1119,63 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
return false;
break;
case NL80211_CHAN_WIDTH_80P80:
- cap = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
- if (cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
+ cap = vht_cap->cap;
+ support_80_80 =
+ (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
+ (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
+ cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
+ (ext_nss_cap &&
+ u32_get_bits(cap, IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) > 1);
+ if (chandef->chan->band != NL80211_BAND_6GHZ && !support_80_80)
return false;
- /* fall through */
+ fallthrough;
case NL80211_CHAN_WIDTH_80:
- if (!vht_cap->vht_supported)
- return false;
prohibited_flags |= IEEE80211_CHAN_NO_80MHZ;
width = 80;
+ if (chandef->chan->band == NL80211_BAND_6GHZ)
+ break;
+ if (!vht_cap->vht_supported)
+ return false;
break;
case NL80211_CHAN_WIDTH_160:
+ prohibited_flags |= IEEE80211_CHAN_NO_160MHZ;
+ width = 160;
+ if (chandef->chan->band == NL80211_BAND_6GHZ)
+ break;
if (!vht_cap->vht_supported)
return false;
cap = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
if (cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
- cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
+ cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ &&
+ !(ext_nss_cap &&
+ (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;
- prohibited_flags |= IEEE80211_CHAN_NO_160MHZ;
- width = 160;
break;
default:
WARN_ON_ONCE(1);
@@ -976,67 +1201,31 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
prohibited_flags |= IEEE80211_CHAN_NO_OFDM;
- if (!cfg80211_secondary_chans_ok(wiphy, chandef->center_freq1,
+ if (!cfg80211_secondary_chans_ok(wiphy,
+ ieee80211_chandef_to_khz(chandef),
width, prohibited_flags))
return false;
if (!chandef->center_freq2)
return true;
- return cfg80211_secondary_chans_ok(wiphy, chandef->center_freq2,
+ return cfg80211_secondary_chans_ok(wiphy,
+ MHZ_TO_KHZ(chandef->center_freq2),
width, prohibited_flags);
}
EXPORT_SYMBOL(cfg80211_chandef_usable);
-/*
- * Check if the channel can be used under permissive conditions mandated by
- * some regulatory bodies, i.e., the channel is marked with
- * IEEE80211_CHAN_IR_CONCURRENT and there is an additional station interface
- * associated to an AP on the same channel or on the same UNII band
- * (assuming that the AP is an authorized master).
- * In addition allow operation on a channel on which indoor operation is
- * allowed, iff we are currently operating in an indoor environment.
- */
-static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
- enum nl80211_iftype iftype,
- struct ieee80211_channel *chan)
+static bool cfg80211_ir_permissive_check_wdev(enum nl80211_iftype iftype,
+ struct wireless_dev *wdev,
+ struct ieee80211_channel *chan)
{
- struct wireless_dev *wdev;
- struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+ struct ieee80211_channel *other_chan = NULL;
+ unsigned int link_id;
+ int r1, r2;
- ASSERT_RTNL();
-
- if (!IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) ||
- !(wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR))
- return false;
-
- /* only valid for GO and TDLS off-channel (station/p2p-CL) */
- if (iftype != NL80211_IFTYPE_P2P_GO &&
- iftype != NL80211_IFTYPE_STATION &&
- iftype != NL80211_IFTYPE_P2P_CLIENT)
- return false;
-
- if (regulatory_indoor_allowed() &&
- (chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
- return true;
-
- if (!(chan->flags & IEEE80211_CHAN_IR_CONCURRENT))
- return false;
-
- /*
- * Generally, it is possible to rely on another device/driver to allow
- * the IR concurrent relaxation, however, since the device can further
- * enforce the relaxation (by doing a similar verifications as this),
- * and thus fail the GO instantiation, consider only the interfaces of
- * the current registered device.
- */
- list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
- struct ieee80211_channel *other_chan = NULL;
- int r1, r2;
-
- wdev_lock(wdev);
+ for_each_valid_link(wdev, link_id) {
if (wdev->iftype == NL80211_IFTYPE_STATION &&
- wdev->current_bss)
- other_chan = wdev->current_bss->pub.channel;
+ 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,
@@ -1047,10 +1236,9 @@ static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
*/
if (iftype == NL80211_IFTYPE_P2P_GO &&
wdev->iftype == NL80211_IFTYPE_P2P_GO &&
- wdev->beacon_interval &&
+ wdev->links[link_id].ap.beacon_interval &&
!(chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
- other_chan = wdev->chandef.chan;
- wdev_unlock(wdev);
+ other_chan = wdev->links[link_id].ap.chandef.chan;
if (!other_chan)
continue;
@@ -1088,6 +1276,62 @@ static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
return false;
}
+/*
+ * Check if the channel can be used under permissive conditions mandated by
+ * some regulatory bodies, i.e., the channel is marked with
+ * IEEE80211_CHAN_IR_CONCURRENT and there is an additional station interface
+ * associated to an AP on the same channel or on the same UNII band
+ * (assuming that the AP is an authorized master).
+ * In addition allow operation on a channel on which indoor operation is
+ * allowed, iff we are currently operating in an indoor environment.
+ */
+static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
+ enum nl80211_iftype iftype,
+ struct ieee80211_channel *chan)
+{
+ struct wireless_dev *wdev;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+
+ lockdep_assert_held(&rdev->wiphy.mtx);
+
+ if (!IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) ||
+ !(wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR))
+ return false;
+
+ /* only valid for GO and TDLS off-channel (station/p2p-CL) */
+ if (iftype != NL80211_IFTYPE_P2P_GO &&
+ iftype != NL80211_IFTYPE_STATION &&
+ iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return false;
+
+ if (regulatory_indoor_allowed() &&
+ (chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
+ return true;
+
+ if (!(chan->flags & IEEE80211_CHAN_IR_CONCURRENT))
+ return false;
+
+ /*
+ * Generally, it is possible to rely on another device/driver to allow
+ * the IR concurrent relaxation, however, since the device can further
+ * enforce the relaxation (by doing a similar verifications as this),
+ * and thus fail the GO instantiation, consider only the interfaces of
+ * the current registered device.
+ */
+ list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
+ bool ret;
+
+ wdev_lock(wdev);
+ ret = cfg80211_ir_permissive_check_wdev(iftype, wdev, chan);
+ wdev_unlock(wdev);
+
+ if (ret)
+ return ret;
+ }
+
+ return false;
+}
+
static bool _cfg80211_reg_can_beacon(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
enum nl80211_iftype iftype,
@@ -1126,9 +1370,10 @@ bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
enum nl80211_iftype iftype)
{
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
bool check_no_ir;
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
/*
* Under certain conditions suggested by some regulatory bodies a
@@ -1154,93 +1399,64 @@ 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)
+bool cfg80211_any_usable_channels(struct wiphy *wiphy,
+ unsigned long sband_mask,
+ u32 prohibited_flags)
{
- int ret;
+ int idx;
- *chan = NULL;
- *chanmode = CHAN_MODE_UNDEFINED;
+ prohibited_flags |= IEEE80211_CHAN_DISABLED;
- ASSERT_WDEV_LOCK(wdev);
+ for_each_set_bit(idx, &sband_mask, NUM_NL80211_BANDS) {
+ struct ieee80211_supported_band *sband = wiphy->bands[idx];
+ int chanidx;
- if (wdev->netdev && !netif_running(wdev->netdev))
- return;
+ if (!sband)
+ continue;
+
+ for (chanidx = 0; chanidx < sband->n_channels; chanidx++) {
+ struct ieee80211_channel *chan;
+
+ chan = &sband->channels[chanidx];
+
+ if (chan->flags & prohibited_flags)
+ continue;
+
+ return true;
+ }
+ }
+
+ 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:
- 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;
+ return &wdev->u.ibss.chandef;
+ case NL80211_IFTYPE_OCB:
+ return &wdev->u.ocb.chandef;
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_WDS:
- case NL80211_IFTYPE_P2P_DEVICE:
- case NL80211_IFTYPE_NAN:
- /* these interface types don't really have a channel */
- return;
- case NL80211_IFTYPE_UNSPECIFIED:
- case NUM_NL80211_IFTYPES:
- WARN_ON(1);
+ return &wdev->links[link_id].ap.chandef;
+ default:
+ return NULL;
}
}
+EXPORT_SYMBOL(wdev_chandef);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.