The CAN_REPLACE_PTK0 flag provided by nl80211 can be used to detect if
the card/driver is able to rekey STA PTK keys using only keyid 0
correctly.
Check if the card/driver support it and make the status available as
driver flag.
Signed-off-by: Alexander Wetzel <alexander@xxxxxxxxxxxxxx>
---
src/drivers/driver.h | 2 ++
src/drivers/driver_nl80211_capa.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index f1027c08e..6288fe103 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1704,6 +1704,8 @@ struct wpa_driver_capa {
#define WPA_DRIVER_FLAGS_FTM_RESPONDER 0x0100000000000000ULL
/** Driver support 4-way handshake offload for WPA-Personal */
#define WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_PSK 0x0200000000000000ULL
+/** Driver can correctly rekey PTKs without Extended Key ID */
+#define WPA_DRIVER_FLAGS_SAFE_PTK0_REKEYS 0x0400000000000000ULL
u64 flags;
#define FULL_AP_CLIENT_STATE_SUPP(drv_flags) \
diff --git a/src/drivers/driver_nl80211_capa.c b/src/drivers/driver_nl80211_capa.c
index 9a82cd1e5..96f691b60 100644
--- a/src/drivers/driver_nl80211_capa.c
+++ b/src/drivers/driver_nl80211_capa.c
@@ -417,6 +417,10 @@ static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info,
NL80211_EXT_FEATURE_DFS_OFFLOAD))
capa->flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
+ if (ext_feature_isset(ext_features, len,
+ NL80211_EXT_FEATURE_CAN_REPLACE_PTK0))
+ capa->flags |= WPA_DRIVER_FLAGS_SAFE_PTK0_REKEYS;
+
#ifdef CONFIG_MBO
if (ext_feature_isset(ext_features, len,
NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) &&
--
2.24.1
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