diff options
| author | Alexander Wetzel <alexander@wetzel-home.de> | 2019-03-19 23:34:07 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2019-04-26 14:02:11 +0300 |
| commit | 6cdd3979a2bdc16116c5b2eb09475abf54ba9e70 (patch) | |
| tree | 6802c60c4bff742ca71180029da88e561e230ba2 /net/wireless/util.c | |
| parent | 092c4098f2b42b76068f73c8dd9f98c73b5eb372 (diff) | |
| download | linux-6cdd3979a2bdc16116c5b2eb09475abf54ba9e70.tar.xz | |
nl80211/cfg80211: Extended Key ID support
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>
Diffstat (limited to 'net/wireless/util.c')
| -rw-r--r-- | net/wireless/util.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index e4b8db5e81ec..6c02c9cf7aa9 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -237,14 +237,23 @@ int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, case WLAN_CIPHER_SUITE_CCMP_256: case WLAN_CIPHER_SUITE_GCMP: case WLAN_CIPHER_SUITE_GCMP_256: - /* Disallow pairwise keys with non-zero index unless it's WEP - * or a vendor specific cipher (because current deployments use - * pairwise WEP keys with non-zero indices and for vendor - * specific ciphers this should be validated in the driver or - * hardware level - but 802.11i clearly specifies to use zero) + /* IEEE802.11-2016 allows only 0 and - when using Extended Key + * ID - 1 as index for pairwise keys. + * @NL80211_KEY_NO_TX is only allowed for pairwise keys when + * the driver supports Extended Key ID. + * @NL80211_KEY_SET_TX can't be set when installing and + * validating a key. */ - if (pairwise && key_idx) + if (params->mode == NL80211_KEY_NO_TX) { + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_EXT_KEY_ID)) + return -EINVAL; + else if (!pairwise || key_idx < 0 || key_idx > 1) + return -EINVAL; + } else if ((pairwise && key_idx) || + params->mode == NL80211_KEY_SET_TX) { return -EINVAL; + } break; case WLAN_CIPHER_SUITE_AES_CMAC: case WLAN_CIPHER_SUITE_BIP_CMAC_256: |