diff options
Diffstat (limited to 'net/wireless/util.c')
| -rw-r--r-- | net/wireless/util.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index 5f7e997195c..beb226e78cd 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -138,3 +138,48 @@ void ieee80211_set_bitrate_flags(struct wiphy *wiphy) if (wiphy->bands[band]) set_mandatory_flags_band(wiphy->bands[band], band); } + +int cfg80211_validate_key_settings(struct key_params *params, int key_idx, + const u8 *mac_addr) +{ + if (key_idx > 5) + return -EINVAL; + + /* + * Disallow pairwise keys with non-zero index unless it's WEP + * (because current deployments use pairwise WEP keys with + * non-zero indizes but 802.11i clearly specifies to use zero) + */ + if (mac_addr && key_idx && + params->cipher != WLAN_CIPHER_SUITE_WEP40 && + params->cipher != WLAN_CIPHER_SUITE_WEP104) + return -EINVAL; + + /* TODO: add definitions for the lengths to linux/ieee80211.h */ + switch (params->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + if (params->key_len != 5) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_TKIP: + if (params->key_len != 32) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_CCMP: + if (params->key_len != 16) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_WEP104: + if (params->key_len != 13) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + if (params->key_len != 16) + return -EINVAL; + break; + default: + return -EINVAL; + } + + return 0; +} |