diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2024-06-12 15:28:36 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-06-26 11:21:44 +0300 |
| commit | 414e090bc41d27af8196d2f36c2e883d7b4f1478 (patch) | |
| tree | 6918b91b9e04c9b14a7651da5ef6c9165588db1f /net/mac80211/ieee80211_i.h | |
| parent | dc494fdc1f0657b4786d4f556b0462fe5198506b (diff) | |
| download | linux-414e090bc41d27af8196d2f36c2e883d7b4f1478.tar.xz | |
wifi: mac80211: restrict public action ECSA frame handling
Public action extended channel switch announcement (ECSA)
frames cannot be protected well, the spec is unclear about
what should happen in the presence of stations that can
receive protected dual and stations that cannot.
Mitigate these issues by not treating public action frames
as the absolute truth, only treat them as a hint to stop
transmitting (quiet mode), and do the remainder of the CSA
handling only when receiving the next beacon (or protected
action frame) that contains the CSA; or, if it doesn't,
simply stop being quiet and continue operating normally.
This limits the exposure to malicious ECSA public action
frames, since they cannot cause a disconnect now, only a
short interruption in traffic.
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240612143037.ec7ccc45903e.Ife17d55c7ecbf98060f9c52889f3c8ba48798970@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/ieee80211_i.h')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index b482763e9f99..cb3e28f88089 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -2218,6 +2218,8 @@ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, * @conn: contains information about own capabilities and restrictions * to decide which channel switch announcements can be accepted * @bssid: the currently connected bssid (for reporting) + * @unprot_action: whether the frame was an unprotected frame or not, + * used for reporting * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. * All of them will be filled with if success only. * Return: 0 on success, <0 on error and >0 if there is nothing to parse. @@ -2227,7 +2229,7 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, enum nl80211_band current_band, u32 vht_cap_info, struct ieee80211_conn_settings *conn, - u8 *bssid, + u8 *bssid, bool unprot_action, struct ieee80211_csa_ie *csa_ie); /* Suspend/resume and hw reconfiguration */ |