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-rw-r--r--net/mac80211/ieee80211_i.h3
-rw-r--r--net/mac80211/mlme.c71
-rw-r--r--net/mac80211/trace.h8
-rw-r--r--net/mac80211/util.c8
4 files changed, 70 insertions, 20 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 10c3180b165e..8f240c0ec304 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1019,7 +1019,7 @@ struct ieee80211_local {
enum mac80211_scan_state next_scan_state;
struct delayed_work scan_work;
struct ieee80211_sub_if_data __rcu *scan_sdata;
- struct ieee80211_channel *csa_channel;
+ struct cfg80211_chan_def csa_chandef;
/* For backward compatibility only -- do not use */
struct cfg80211_chan_def _oper_chandef;
@@ -1183,6 +1183,7 @@ struct ieee802_11_elems {
const u8 *pwr_constr_elem;
const struct ieee80211_timeout_interval_ie *timeout_int;
const u8 *opmode_notif;
+ const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
/* length of them, respectively */
u8 ssid_len;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index bc6f87edc624..bd581a80e4b7 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -289,6 +289,8 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
} else {
/* 40 MHz (and 80 MHz) must be supported for VHT */
ret = IEEE80211_STA_DISABLE_VHT;
+ /* also mark 40 MHz disabled */
+ ret |= IEEE80211_STA_DISABLE_40MHZ;
goto out;
}
@@ -964,16 +966,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
if (!ifmgd->associated)
goto out;
- /*
- * FIXME: Here we are downgrading to NL80211_CHAN_WIDTH_20_NOHT
- * and don't adjust our ht/vht settings
- * This is wrong - we should behave according to the CSA params
- */
- local->_oper_chandef.chan = local->csa_channel;
- local->_oper_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
- local->_oper_chandef.center_freq1 =
- local->_oper_chandef.chan->center_freq;
- local->_oper_chandef.center_freq2 = 0;
+ local->_oper_chandef = local->csa_chandef;
if (!local->ops->channel_switch) {
/* call "hw_config" only if doing sw channel switch */
@@ -1028,13 +1021,14 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct cfg80211_bss *cbss = ifmgd->associated;
struct ieee80211_bss *bss;
- struct ieee80211_channel *new_ch;
struct ieee80211_chanctx *chanctx;
enum ieee80211_band new_band;
int new_freq;
u8 new_chan_no;
u8 count;
u8 mode;
+ struct cfg80211_chan_def new_chandef = {};
+ int secondary_channel_offset = -1;
ASSERT_MGD_MTX(ifmgd);
@@ -1048,6 +1042,19 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
return;
+ if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
+ /* if HT is enabled and the IE not present, it's still HT */
+ secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
+ if (elems->sec_chan_offs)
+ secondary_channel_offset =
+ elems->sec_chan_offs->sec_chan_offs;
+ }
+
+ if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
+ (secondary_channel_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE ||
+ secondary_channel_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW))
+ secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
+
if (elems->ext_chansw_ie) {
if (!ieee80211_operating_class_to_band(
elems->ext_chansw_ie->new_operating_class,
@@ -1074,8 +1081,9 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
bss = (void *)cbss->priv;
new_freq = ieee80211_channel_to_frequency(new_chan_no, new_band);
- new_ch = ieee80211_get_channel(local->hw.wiphy, new_freq);
- if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) {
+ new_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
+ if (!new_chandef.chan ||
+ new_chandef.chan->flags & IEEE80211_CHAN_DISABLED) {
sdata_info(sdata,
"AP %pM switches to unsupported channel (%d MHz), disconnecting\n",
ifmgd->associated->bssid, new_freq);
@@ -1084,6 +1092,39 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
return;
}
+ switch (secondary_channel_offset) {
+ default:
+ /* secondary_channel_offset was present but is invalid */
+ case IEEE80211_HT_PARAM_CHA_SEC_NONE:
+ cfg80211_chandef_create(&new_chandef, new_chandef.chan,
+ NL80211_CHAN_HT20);
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ cfg80211_chandef_create(&new_chandef, new_chandef.chan,
+ NL80211_CHAN_HT40PLUS);
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ cfg80211_chandef_create(&new_chandef, new_chandef.chan,
+ NL80211_CHAN_HT40MINUS);
+ break;
+ case -1:
+ cfg80211_chandef_create(&new_chandef, new_chandef.chan,
+ NL80211_CHAN_NO_HT);
+ break;
+ }
+
+ if (!cfg80211_chandef_usable(local->hw.wiphy, &new_chandef,
+ IEEE80211_CHAN_DISABLED)) {
+ sdata_info(sdata,
+ "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
+ ifmgd->associated->bssid, new_freq,
+ new_chandef.width, new_chandef.center_freq1,
+ new_chandef.center_freq2);
+ ieee80211_queue_work(&local->hw,
+ &ifmgd->csa_connection_drop_work);
+ return;
+ }
+
ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
if (local->use_chanctx) {
@@ -1111,7 +1152,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
}
mutex_unlock(&local->chanctx_mtx);
- local->csa_channel = new_ch;
+ local->csa_chandef = new_chandef;
if (mode)
ieee80211_stop_queues_by_reason(&local->hw,
@@ -1123,7 +1164,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel_switch ch_switch = {
.timestamp = timestamp,
.block_tx = mode,
- .channel = new_ch,
+ .chandef = new_chandef,
.count = count,
};
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 8286dcef228b..c215fafd7a2f 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -990,23 +990,23 @@ TRACE_EVENT(drv_channel_switch,
TP_STRUCT__entry(
LOCAL_ENTRY
+ CHANDEF_ENTRY
__field(u64, timestamp)
__field(bool, block_tx)
- __field(u16, freq)
__field(u8, count)
),
TP_fast_assign(
LOCAL_ASSIGN;
+ CHANDEF_ASSIGN(&ch_switch->chandef)
__entry->timestamp = ch_switch->timestamp;
__entry->block_tx = ch_switch->block_tx;
- __entry->freq = ch_switch->channel->center_freq;
__entry->count = ch_switch->count;
),
TP_printk(
- LOCAL_PR_FMT " new freq:%u count:%d",
- LOCAL_PR_ARG, __entry->freq, __entry->count
+ LOCAL_PR_FMT " new " CHANDEF_PR_FMT " count:%d",
+ LOCAL_PR_ARG, CHANDEF_PR_ARG, __entry->count
)
);
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index e4a6d559372d..155056c90edf 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -716,6 +716,7 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
case WLAN_EID_COUNTRY:
case WLAN_EID_PWR_CONSTRAINT:
case WLAN_EID_TIMEOUT_INTERVAL:
+ case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
if (test_bit(id, seen_elems)) {
elems->parse_error = true;
left -= elen;
@@ -870,6 +871,13 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
}
elems->ext_chansw_ie = (void *)pos;
break;
+ case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
+ if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->sec_chan_offs = (void *)pos;
+ break;
case WLAN_EID_COUNTRY:
elems->country_elem = pos;
elems->country_elem_len = elen;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-09-14 08:15:19 +0200