diff options
| author | Sara Sharon <sara.sharon@intel.com> | 2019-01-16 23:02:03 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2019-02-08 13:51:50 +0100 |
| commit | 213ed579d38ef47c55694a4a411926af3dfc6558 (patch) | |
| tree | 1eaffbf2a7c3251739cfd8a62f0027930917bf86 /net/wireless | |
| parent | 7011ba583f425780ab1ee52f41161a0171197365 (diff) | |
| download | linux-0-day-213ed579d38ef47c55694a4a411926af3dfc6558.tar.gz linux-0-day-213ed579d38ef47c55694a4a411926af3dfc6558.tar.xz | |
cfg80211: parse multi-bssid only if HW supports it
Parsing and exposing nontransmitted APs is problematic
when underlying HW doesn't support it. Do it only if
driver indicated support. Allow HE restriction as well,
since the HE spec defined the exact manner that Multiple
BSSID set should behave. APs that not support the HE
spec will have less predictable Multiple BSSID set
support/behavior
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/scan.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 325323a842d8a..ab0f0178ee0eb 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -1417,6 +1417,11 @@ static void cfg80211_parse_mbssid_data(struct wiphy *wiphy, return; if (!cfg80211_find_ie(WLAN_EID_MULTIPLE_BSSID, ie, ielen)) return; + if (!wiphy->support_mbssid) + return; + if (wiphy->support_only_he_mbssid && + !cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ie, ielen)) + return; new_ie = kmalloc(IEEE80211_MAX_DATA_LEN, gfp); if (!new_ie) @@ -1701,7 +1706,11 @@ cfg80211_inform_bss_frame_data(struct wiphy *wiphy, res = cfg80211_inform_single_bss_frame_data(wiphy, data, mgmt, len, NULL, gfp); - if (!res || !cfg80211_find_ie(WLAN_EID_MULTIPLE_BSSID, ie, ielen)) + if (!res || !wiphy->support_mbssid || + !cfg80211_find_ie(WLAN_EID_MULTIPLE_BSSID, ie, ielen)) + return res; + if (wiphy->support_only_he_mbssid && + !cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ie, ielen)) return res; /* process each non-transmitting bss */ |