diff mbox series

[v9,01/16] nl80211: Add support for CAN_REPLACE_PTK0

Message ID 20200104221015.90469-2-alexander@wetzel-home.de
State Changes Requested
Headers show
Series Seamless PTK rekeys | expand

Commit Message

Alexander Wetzel Jan. 4, 2020, 10:10 p.m. UTC 
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@wetzel-home.de>
---
 src/drivers/driver.h              | 2 ++
 src/drivers/driver_nl80211_capa.c | 4 ++++
 2 files changed, 6 insertions(+)
diff mbox series

Patch

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) &&