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| author |   Johannes Berg <johannes.berg@intel.com> | 2022-06-29 13:29:05 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2022-07-15 11:43:17 +0200 |
| commit | 38c6aa29d4558c55a1d2b4010cc588716e212f89 (patch) | |
| tree | 7f8997e0e72baafdeeede9f4c369643ba3c33239 /net/mac80211/ibss.c | |
| parent | wifi: mac80211: move tdls_chan_switch_prohibited to link data (diff) | |
| download | linux-dev-38c6aa29d4558c55a1d2b4010cc588716e212f89.tar.xz linux-dev-38c6aa29d4558c55a1d2b4010cc588716e212f89.zip | |
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 <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/ibss.c')
| -rw-r--r-- | net/mac80211/ibss.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 0a1d51c60530..e8df4ce33984 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1601,8 +1601,7 @@ void ieee80211_rx_mgmt_probe_beacon(struct ieee80211_sub_if_data *sdata, return; elems = ieee802_11_parse_elems(mgmt->u.probe_resp.variable, - len - baselen, false, - mgmt->bssid, NULL); + len - baselen, false, NULL); if (elems) { ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, elems); @@ -1655,7 +1654,7 @@ void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, elems = ieee802_11_parse_elems( mgmt->u.action.u.chan_switch.variable, - ies_len, true, mgmt->bssid, NULL); + ies_len, true, NULL); if (elems && !elems->parse_error) ieee80211_rx_mgmt_spectrum_mgmt(sdata, mgmt, |