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nl80211/cfg80211: Extended Key ID support

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Add support for IEEE 802.11-2016 "Extended Key ID for Individually
Addressed Frames".

Extend cfg80211 and nl80211 to allow pairwise keys to be installed for
Rx only, enable Tx separately and allow Key ID 1 for pairwise keys.

Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
[use NLA_POLICY_RANGE() for NL80211_KEY_MODE]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Alexander Wetzel
2019-03-19 21:34:07 +01:00
committed by Johannes Berg
parent 092c4098f2
commit 6cdd3979a2
6 changed files with 102 additions and 17 deletions
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28
include/uapi/linux/nl80211.h
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@@ -4152,6 +4152,27 @@ enum nl80211_channel_type {
NL80211_CHAN_HT40PLUS
};
/**
* enum nl80211_key_mode - Key mode
*
* @NL80211_KEY_RX_TX: (Default)
* Key can be used for Rx and Tx immediately
*
* The following modes can only be selected for unicast keys and when the
* driver supports @NL80211_EXT_FEATURE_EXT_KEY_ID:
*
* @NL80211_KEY_NO_TX: Only allowed in combination with @NL80211_CMD_NEW_KEY:
* Unicast key can only be used for Rx, Tx not allowed, yet
* @NL80211_KEY_SET_TX: Only allowed in combination with @NL80211_CMD_SET_KEY:
* The unicast key identified by idx and mac is cleared for Tx and becomes
* the preferred Tx key for the station.
*/
enum nl80211_key_mode {
NL80211_KEY_RX_TX,
NL80211_KEY_NO_TX,
NL80211_KEY_SET_TX
};
/**
* enum nl80211_chan_width - channel width definitions
*
@@ -4395,6 +4416,9 @@ enum nl80211_key_default_types {
* @NL80211_KEY_DEFAULT_TYPES: A nested attribute containing flags
* attributes, specifying what a key should be set as default as.
* See &enum nl80211_key_default_types.
* @NL80211_KEY_MODE: the mode from enum nl80211_key_mode.
* Defaults to @NL80211_KEY_RX_TX.
*
* @__NL80211_KEY_AFTER_LAST: internal
* @NL80211_KEY_MAX: highest key attribute
*/
@@ -4408,6 +4432,7 @@ enum nl80211_key_attributes {
NL80211_KEY_DEFAULT_MGMT,
NL80211_KEY_TYPE,
NL80211_KEY_DEFAULT_TYPES,
NL80211_KEY_MODE,
/* keep last */
__NL80211_KEY_AFTER_LAST,
@@ -5353,6 +5378,8 @@ enum nl80211_feature_flags {
* able to rekey an in-use key correctly. Userspace must not rekey PTK keys
* if this flag is not set. Ignoring this can leak clear text packets and/or
* freeze the connection.
* @NL80211_EXT_FEATURE_EXT_KEY_ID: Driver supports "Extended Key ID for
* Individually Addressed Frames" from IEEE802.11-2016.
*
* @NL80211_EXT_FEATURE_AIRTIME_FAIRNESS: Driver supports getting airtime
* fairness for transmitted packets and has enabled airtime fairness
@@ -5406,6 +5433,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS,
NL80211_EXT_FEATURE_AP_PMKSA_CACHING,
NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD,
NL80211_EXT_FEATURE_EXT_KEY_ID,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,