From 38c6aa29d4558c55a1d2b4010cc588716e212f89 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 29 Jun 2022 13:29:05 +0200 Subject: wifi: mac80211: fix multi-BSSID element parsing When parsing a frame containing a multi-BSSID element, we need to know both the transmitted and non-transmitted BSSID so we can parse it correctly. Unfortunately, in quite a number of cases, we got this wrong and were passing the wrong BSSID or useless information: * the mgmt->bssid from a frame is only the transmitted BSSID if the frame is a beacon * passing just one of the parameters as non-NULL isn't useful and ignored In those case where we need to parse for a specific BSS we always have a BSS structure pointer, representing the BSS we need, whether transmitted or not. Thus, pass that pointer to the parsing function instead of the two BSSIDs. Also fix two bugs: * we need to re-parse all the elements for the other BSS when iterating the non-transmitted BSSes in scan * we need to parse for the correct BSS when setting up the channel data in client code Fixes: 78ac51f81532 ("mac80211: support multi-bssid") Signed-off-by: Johannes Berg --- net/mac80211/mesh_plink.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'net/mac80211/mesh_plink.c') diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index d67011745048..84e3f43fd5c6 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -1229,8 +1229,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, if (baselen > len) return; } - elems = ieee802_11_parse_elems(baseaddr, len - baselen, true, - mgmt->bssid, NULL); + elems = ieee802_11_parse_elems(baseaddr, len - baselen, true, NULL); mesh_process_plink_frame(sdata, mgmt, elems, rx_status); kfree(elems); } -- cgit v1.2.3