Commit 2d63e653 authored by Michael-CY Lee's avatar Michael-CY Lee Committed by Johannes Berg
Browse files

wifi: mac80211: refactor BW limitation check for CSA parsing 



Refactor the BW limitation check to a more general format when
parsing CSA. Also, the original BW check did not account for BW
less than 160 MHz.

Signed-off-by: default avatarMichael-CY Lee <michael-cy.lee@mediatek.com>
Link: https://patch.msgid.link/20241009121812.2419-1-michael-cy.lee@mediatek.com


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent f92e0cf1

net/mac80211/spectmgmt.c

+2 −7
Original line number Diff line number Diff line
@@ -377,13 +377,8 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 
		/* capture the AP chandef before (potential) downgrading */

		csa_ie->chanreq.ap = new_chandef;



		if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320 &&

		    new_chandef.width == NL80211_CHAN_WIDTH_320)

			ieee80211_chandef_downgrade(&new_chandef, NULL);



		if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160 &&

		    (new_chandef.width == NL80211_CHAN_WIDTH_80P80 ||

		     new_chandef.width == NL80211_CHAN_WIDTH_160))

		while (conn->bw_limit <

			       ieee80211_min_bw_limit_from_chandef(&new_chandef))

			ieee80211_chandef_downgrade(&new_chandef, NULL);



		if (!cfg80211_chandef_compatible(&new_chandef,