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wifi: cfg80211: add support for EPPKE Authentication Protocol

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Add an extended feature flag NL80211_EXT_FEATURE_EPPKE to allow a
driver to indicate support for the Enhanced Privacy Protection Key
Exchange (EPPKE) authentication protocol in non-AP STA mode, as
defined in "IEEE P802.11bi/D3.0, 12.16.9".

In case of SME in userspace, the Authentication frame body is prepared
in userspace while the driver finalizes the Authentication frame once
it receives the required fields and elements. The driver indicates
support for EPPKE using the extended feature flag so that userspace
can initiate EPPKE authentication.

When the feature flag is set, process EPPKE Authentication frames from
userspace in non-AP STA mode. If the flag is not set, reject EPPKE
Authentication frames.

Define a new authentication type NL80211_AUTHTYPE_EPPKE for EPPKE.

Signed-off-by: Ainy Kumari <ainy.kumari@oss.qualcomm.com>
Co-developed-by: Kavita Kavita <kavita.kavita@oss.qualcomm.com>
Signed-off-by: Kavita Kavita <kavita.kavita@oss.qualcomm.com>
Link: https://patch.msgid.link/20260114111900.2196941-2-kavita.kavita@oss.qualcomm.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ainy Kumari 2026-01-14 16:48:52 +05:30 committed by Johannes Berg
parent 24a5798567
commit f29c852149
3 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/ieee80211.h
View File

@ -1351,6 +1351,7 @@ struct ieee80211_tdls_data {
#define WLAN_AUTH_FILS_SK 4
#define WLAN_AUTH_FILS_SK_PFS 5
#define WLAN_AUTH_FILS_PK 6
#define WLAN_AUTH_EPPKE 9
#define WLAN_AUTH_LEAP 128
#define WLAN_AUTH_CHALLENGE_LEN 128

7
include/uapi/linux/nl80211.h
View File

@ -5429,6 +5429,7 @@ enum nl80211_bss_status {
* @NL80211_AUTHTYPE_FILS_SK: Fast Initial Link Setup shared key
* @NL80211_AUTHTYPE_FILS_SK_PFS: Fast Initial Link Setup shared key with PFS
* @NL80211_AUTHTYPE_FILS_PK: Fast Initial Link Setup public key
* @NL80211_AUTHTYPE_EPPKE: Enhanced Privacy Protection Key Exchange
* @__NL80211_AUTHTYPE_NUM: internal
* @NL80211_AUTHTYPE_MAX: maximum valid auth algorithm
* @NL80211_AUTHTYPE_AUTOMATIC: determine automatically (if necessary by
@ -5444,6 +5445,7 @@ enum nl80211_auth_type {
NL80211_AUTHTYPE_FILS_SK,
NL80211_AUTHTYPE_FILS_SK_PFS,
NL80211_AUTHTYPE_FILS_PK,
NL80211_AUTHTYPE_EPPKE,
/* keep last */
__NL80211_AUTHTYPE_NUM,
@ -6748,6 +6750,10 @@ enum nl80211_feature_flags {
* @NL80211_EXT_FEATURE_BEACON_RATE_EHT: Driver supports beacon rate
* configuration (AP/mesh) with EHT rates.
*
* @NL80211_EXT_FEATURE_EPPKE: Driver supports Enhanced Privacy Protection
* Key Exchange (EPPKE) with user space SME (NL80211_CMD_AUTHENTICATE)
* in non-AP STA mode.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@ -6824,6 +6830,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_DFS_CONCURRENT,
NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT,
NL80211_EXT_FEATURE_BEACON_RATE_EHT,
NL80211_EXT_FEATURE_EPPKE,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,

14
net/wireless/nl80211.c
View File

@ -6473,6 +6473,10 @@ static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
auth_type == NL80211_AUTHTYPE_FILS_PK))
return false;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_EPPKE) &&
auth_type == NL80211_AUTHTYPE_EPPKE)
return false;
return true;
case NL80211_CMD_CONNECT:
if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
@ -6490,6 +6494,10 @@ static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
auth_type == NL80211_AUTHTYPE_FILS_SK)
return false;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_EPPKE) &&
auth_type == NL80211_AUTHTYPE_EPPKE)
return false;
return true;
case NL80211_CMD_START_AP:
if (!wiphy_ext_feature_isset(&rdev->wiphy,
@ -11956,7 +11964,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
if ((auth_type == NL80211_AUTHTYPE_SAE ||
auth_type == NL80211_AUTHTYPE_FILS_SK ||
auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
auth_type == NL80211_AUTHTYPE_FILS_PK) &&
auth_type == NL80211_AUTHTYPE_FILS_PK ||
auth_type == NL80211_AUTHTYPE_EPPKE) &&
!info->attrs[NL80211_ATTR_AUTH_DATA])
return -EINVAL;
@ -11964,7 +11973,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
if (auth_type != NL80211_AUTHTYPE_SAE &&
auth_type != NL80211_AUTHTYPE_FILS_SK &&
auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
auth_type != NL80211_AUTHTYPE_FILS_PK)
auth_type != NL80211_AUTHTYPE_FILS_PK &&
auth_type != NL80211_AUTHTYPE_EPPKE)
return -EINVAL;
req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);