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wifi: mac80211: handle TPE element during CSA

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Handle the transmit power envelope (TPE) element during
channel switch, applying it when the channel switch is
done.

Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240506215543.486c33157d18.Idf971ad801b6961c177bdf42cc323fd1a4ca8165@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2024-05-06 21:54:51 +02:00
parent f81747a9ad
commit 4540568136
3 changed files with 29 additions and 0 deletions
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3
net/mac80211/ieee80211_i.h
View File

@ -977,6 +977,8 @@ struct ieee80211_link_data_managed {
struct {
struct wiphy_delayed_work switch_work;
struct cfg80211_chan_def ap_chandef;
struct ieee80211_parsed_tpe tpe;
unsigned long time;
bool waiting_bcn;
bool ignored_same_chan;
@ -1754,6 +1756,7 @@ struct ieee802_11_elems {
/* not the order in the psd values is per element, not per chandef */
struct ieee80211_parsed_tpe tpe;
struct ieee80211_parsed_tpe csa_tpe;
/* length of them, respectively */
u8 ext_capab_len;

18
net/mac80211/mlme.c
View File

@ -2129,6 +2129,20 @@ static void ieee80211_csa_switch_work(struct wiphy *wiphy,
link->u.mgd.csa.waiting_bcn = true;
/* apply new TPE restrictions immediately on the new channel */
if (link->u.mgd.csa.ap_chandef.chan->band == NL80211_BAND_6GHZ &&
link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HE) {
ieee80211_rearrange_tpe(&link->u.mgd.csa.tpe,
&link->u.mgd.csa.ap_chandef,
&link->conf->chanreq.oper);
if (memcmp(&link->conf->tpe, &link->u.mgd.csa.tpe,
sizeof(link->u.mgd.csa.tpe))) {
link->conf->tpe = link->u.mgd.csa.tpe;
ieee80211_link_info_change_notify(sdata, link,
BSS_CHANGED_TPE);
}
}
ieee80211_sta_reset_beacon_monitor(sdata);
ieee80211_sta_reset_conn_monitor(sdata);
}
@ -2379,6 +2393,8 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link,
ch_switch.count = csa_ie.count;
ch_switch.delay = csa_ie.max_switch_time;
}
link->u.mgd.csa.tpe = csa_elems->csa_tpe;
} else {
/*
* If there was no per-STA profile for this link, we
@ -2517,6 +2533,8 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link,
goto drop_connection;
}
link->u.mgd.csa.ap_chandef = csa_ie.chanreq.ap;
link->csa.chanreq = csa_ie.chanreq;
if (link->u.mgd.conn.mode < IEEE80211_CONN_MODE_EHT ||
sdata->vif.driver_flags & IEEE80211_VIF_IGNORE_OFDMA_WIDER_BW)

8
net/mac80211/parse.c
View File

@ -607,6 +607,13 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elem_parse_failed =
IEEE80211_PARSE_ERR_BAD_ELEM_SIZE;
}
subelem = cfg80211_find_ext_elem(WLAN_EID_TX_POWER_ENVELOPE,
pos, elen);
if (subelem)
ieee80211_parse_tpe(&elems->csa_tpe,
subelem->data + 1,
subelem->datalen - 1);
break;
case WLAN_EID_COUNTRY:
elems->country_elem = pos;
@ -962,6 +969,7 @@ ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params)
/* set all TPE entries to unlimited (but invalid) */
ieee80211_clear_tpe(&elems->tpe);
ieee80211_clear_tpe(&elems->csa_tpe);
nontransmitted_profile = elems_parse->scratch_pos;
nontransmitted_profile_len =