diff options
Diffstat (limited to '')
| -rw-r--r-- | net/wireless/util.c | 51 |
1 files changed, 43 insertions, 8 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index 79c5780e3033..b4acc805114b 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -272,18 +272,53 @@ bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher) return false; } -int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, - struct key_params *params, int key_idx, - bool pairwise, const u8 *mac_addr) +static bool +cfg80211_igtk_cipher_supported(struct cfg80211_registered_device *rdev) { - int max_key_idx = 5; + struct wiphy *wiphy = &rdev->wiphy; + int i; + + for (i = 0; i < wiphy->n_cipher_suites; i++) { + switch (wiphy->cipher_suites[i]) { + case WLAN_CIPHER_SUITE_AES_CMAC: + case WLAN_CIPHER_SUITE_BIP_CMAC_256: + case WLAN_CIPHER_SUITE_BIP_GMAC_128: + case WLAN_CIPHER_SUITE_BIP_GMAC_256: + return true; + } + } + + return false; +} - if (wiphy_ext_feature_isset(&rdev->wiphy, - NL80211_EXT_FEATURE_BEACON_PROTECTION) || - wiphy_ext_feature_isset(&rdev->wiphy, - NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT)) +bool cfg80211_valid_key_idx(struct cfg80211_registered_device *rdev, + int key_idx, bool pairwise) +{ + int max_key_idx; + + if (pairwise) + max_key_idx = 3; + else if (wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_BEACON_PROTECTION) || + wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT)) max_key_idx = 7; + else if (cfg80211_igtk_cipher_supported(rdev)) + max_key_idx = 5; + else + max_key_idx = 3; + if (key_idx < 0 || key_idx > max_key_idx) + return false; + + return true; +} + +int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, + struct key_params *params, int key_idx, + bool pairwise, const u8 *mac_addr) +{ + if (!cfg80211_valid_key_idx(rdev, key_idx, pairwise)) return -EINVAL; if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) |