diff options
| -rw-r--r-- | include/net/mac80211.h | 14 | ||||
| -rw-r--r-- | net/mac80211/cfg.c | 85 |
2 files changed, 89 insertions, 10 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 5b9e7a262448..a762a75ae62d 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -647,9 +647,6 @@ struct ieee80211_key_conf { u8 key[0]; }; -#define IEEE80211_SEQ_COUNTER_RX 0 -#define IEEE80211_SEQ_COUNTER_TX 1 - /** * enum set_key_cmd - key command * @@ -996,9 +993,9 @@ enum ieee80211_erp_change_flags { * * @get_stats: return low-level statistics * - * @get_sequence_counter: For devices that have internal sequence counters this - * callback allows mac80211 to access the current value of a counter. - * This callback seems not well-defined, tell us if you need it. + * @get_tkip_seq: If your device implements TKIP encryption in hardware this + * callback should be provided to read the TKIP transmit IVs (both IV32 + * and IV16) for the given key from hardware. * * @set_rts_threshold: Configuration of RTS threshold (if device needs it) * @@ -1073,9 +1070,8 @@ struct ieee80211_ops { int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len); int (*get_stats)(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats); - int (*get_sequence_counter)(struct ieee80211_hw *hw, - u8* addr, u8 keyidx, u8 txrx, - u32* iv32, u16* iv16); + void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, + u32 *iv32, u16 *iv16); int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); int (*set_retry_limit)(struct ieee80211_hw *hw, diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index d49f7b58b05c..4c1ce353c662 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1,7 +1,7 @@ /* * mac80211 configuration hooks for cfg80211 * - * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> + * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> * * This file is GPLv2 as found in COPYING. */ @@ -175,6 +175,88 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, return 0; } +static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, + u8 key_idx, u8 *mac_addr, void *cookie, + void (*callback)(void *cookie, + struct key_params *params)) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct sta_info *sta = NULL; + u8 seq[6] = {0}; + struct key_params params; + struct ieee80211_key *key; + u32 iv32; + u16 iv16; + int err = -ENOENT; + + if (mac_addr) { + sta = sta_info_get(sdata->local, mac_addr); + if (!sta) + goto out; + + key = sta->key; + } else + key = sdata->keys[key_idx]; + + if (!key) + goto out; + + memset(¶ms, 0, sizeof(params)); + + switch (key->conf.alg) { + case ALG_TKIP: + params.cipher = WLAN_CIPHER_SUITE_TKIP; + + iv32 = key->u.tkip.iv32; + iv16 = key->u.tkip.iv16; + + if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && + sdata->local->ops->get_tkip_seq) + sdata->local->ops->get_tkip_seq( + local_to_hw(sdata->local), + key->conf.hw_key_idx, + &iv32, &iv16); + + seq[0] = iv16 & 0xff; + seq[1] = (iv16 >> 8) & 0xff; + seq[2] = iv32 & 0xff; + seq[3] = (iv32 >> 8) & 0xff; + seq[4] = (iv32 >> 16) & 0xff; + seq[5] = (iv32 >> 24) & 0xff; + params.seq = seq; + params.seq_len = 6; + break; + case ALG_CCMP: + params.cipher = WLAN_CIPHER_SUITE_CCMP; + seq[0] = key->u.ccmp.tx_pn[5]; + seq[1] = key->u.ccmp.tx_pn[4]; + seq[2] = key->u.ccmp.tx_pn[3]; + seq[3] = key->u.ccmp.tx_pn[2]; + seq[4] = key->u.ccmp.tx_pn[1]; + seq[5] = key->u.ccmp.tx_pn[0]; + params.seq = seq; + params.seq_len = 6; + break; + case ALG_WEP: + if (key->conf.keylen == 5) + params.cipher = WLAN_CIPHER_SUITE_WEP40; + else + params.cipher = WLAN_CIPHER_SUITE_WEP104; + break; + } + + params.key = key->conf.key; + params.key_len = key->conf.keylen; + + callback(cookie, ¶ms); + err = 0; + + out: + if (sta) + sta_info_put(sta); + return err; +} + static int ieee80211_config_default_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx) @@ -193,5 +275,6 @@ struct cfg80211_ops mac80211_config_ops = { .change_virtual_intf = ieee80211_change_iface, .add_key = ieee80211_add_key, .del_key = ieee80211_del_key, + .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, }; |