Commit b23af479 authored by Johannes Berg's avatar Johannes Berg
Browse files

wifi: mac80211: chan: calculate min_def also for client mode 



In order to deal with (temporary) bandwidth reductions to/from
the AP such as the upcoming RX OMI changes, modify the min_def
calculation to also not take the chanreq width into account in
client mode. This normally changes nothing as the AP bandwidth
will be the same as the channel request's width. In the RX OMI
changes, however, the code will reduce the bandwidth for only
the AP STA, since the OMI is only to that, and TDLS STAs are
unaffected. Using the min_def for this case simplifies RX OMI
a lot.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarMiri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20241007144851.95a39c4f6f45.I2e7517fb1a7221dc6f60b0c752e4882042b4265d@changeid


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 41eba076

net/mac80211/chan.c

+17 −9
Original line number Diff line number Diff line
@@ -323,18 +323,26 @@ ieee80211_get_chanctx_max_required_bw(struct ieee80211_local *local, 
			continue;



		switch (link->sdata->vif.type) {

		case NL80211_IFTYPE_AP:

		case NL80211_IFTYPE_AP_VLAN:

			width = ieee80211_get_max_required_bw(link);

			break;

		case NL80211_IFTYPE_STATION:

			if (!link->sdata->vif.cfg.assoc) {

				/*

			 * The ap's sta->bandwidth is not set yet at this

			 * point, so take the width from the chandef, but

			 * account also for TDLS peers

				 * The AP's sta->bandwidth may not yet be set

				 * at this point (pre-association), so simply

				 * take the width from the chandef. We cannot

				 * have TDLS peers yet (only after association).

				 */

			width = max(link->conf->chanreq.oper.width,

				    ieee80211_get_max_required_bw(link));

				width = link->conf->chanreq.oper.width;

				break;

			}

			/*

			 * otherwise just use min_def like in AP, depending on what

			 * we currently think the AP STA (and possibly TDLS peers)

			 * require(s)

			 */

			fallthrough;

		case NL80211_IFTYPE_AP:

		case NL80211_IFTYPE_AP_VLAN:

			width = ieee80211_get_max_required_bw(link);

			break;

		case NL80211_IFTYPE_P2P_DEVICE:

		case NL80211_IFTYPE_NAN: