For offloading 4 way handshake to driver , currently we don't have WIPHY capability flag to communicate same to supplicant.
I have added the flag NL80211_ATTR_4WAY_KEY_HANDSHAKE and rest of the code for the same.
Tested on x86 linux machine
Signed-off-by: Gautam kumar shukla <gautams@xxxxxxxxxxxx>
---
include/net/cfg80211.h | 4 ++++
include/uapi/linux/nl80211.h | 5 ++++-
net/wireless/nl80211.c | 4 ++++
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 6f744e0..b37de0a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2629,7 +2629,10 @@ struct cfg80211_ops {
* TSPEC sessions (TID aka TSID 0-7) with the NL80211_CMD_ADD_TX_TS
* command. Standard IEEE 802.11 TSPEC setup is not yet supported, it
* needs to be able to handle Block-Ack agreements and other things.
+ * @WIPHY_FLAG_SUPPORTS_4WAY_HANDHSHAKE:the device supports 4way handshake
+ * in the driver/firmware.
*/
+
enum wiphy_flags {
WIPHY_FLAG_SUPPORTS_WMM_ADMISSION = BIT(0),
/* use hole at 1 */
@@ -2654,6 +2657,7 @@ enum wiphy_flags {
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21),
WIPHY_FLAG_SUPPORTS_5_10_MHZ = BIT(22),
WIPHY_FLAG_HAS_CHANNEL_SWITCH = BIT(23),
+ WIPHY_FLAG_SUPPORTS_4WAY_HANDSHAKE = BIT(24),
};
/**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index b01d5dd..2c474a3 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1640,9 +1640,11 @@ enum nl80211_commands {
*
* @NL80211_ATTR_PSK: a PSK value (u8 attribute).This is 32-octet (256-bit)
* PSK.
+ * @NL80211_ATTR_4WAY_KEY_HANDSHAKE: Indicates whether the driver is capable
+ * of 4way key handshake
*
*
- * @NL80211_ATTR_MAX: highest attribute number currently defined
+ * * @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
enum nl80211_attrs {
@@ -1995,6 +1997,7 @@ enum nl80211_attrs {
NL80211_ATTR_SMPS_MODE,
NL80211_ATTR_PSK,
+ NL80211_ATTR_4WAY_KEY_HANDSHAKE,
/* add attributes here, update the policy in nl80211.c */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 91c24b1..5f85c41 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -396,6 +396,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
[NL80211_ATTR_PSK] = { .type = NLA_BINARY, .len = 32 },
+ [NL80211_ATTR_4WAY_KEY_HANDSHAKE] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@@ -1303,6 +1304,9 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
goto nla_put_failure;
+ if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_4WAY_HANDSHAKE) &&
+ nla_put_flag(msg,NL80211_ATTR_4WAY_KEY_HANDSHAKE))
+ goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
goto nla_put_failure;
--
1.9.1
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