[MAC80211]: embed key conf in key, fix driver interface

This patch embeds the struct ieee80211_key_conf into struct ieee80211_key
and thus avoids allocations and having data present twice.

This required some more changes:
 1) The removal of the IEEE80211_KEY_DEFAULT_TX_KEY key flag.
    This flag isn't used by drivers nor should it be since
    we have a set_key_idx() callback. Maybe that callback needs
    to be extended to include the key conf, but only a driver that
    requires it will tell.
 2) The removal of the IEEE80211_KEY_DEFAULT_WEP_ONLY key flag.
    This flag is global, so it shouldn't be passed in the key
    conf structure. Pass it to the function instead.

Also, this patch removes the AID parameter to the set_key() callback
because it is currently unused and the hardware currently cannot know
about the AID anyway. I suspect this was used with some hardware that
actually selected the AID itself, but that functionality was removed.

Additionally, I've removed the ALG_NULL key algorithm since we have
ALG_NONE.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 8 deletions

diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index 41621720e56..b9c1d540518 100644
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -182,7 +182,7 @@ u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
         *pos++ = iv0;
         *pos++ = iv1;
         *pos++ = iv2;
-        *pos++ = (key->keyidx << 6) | (1 << 5) /* Ext IV */;
+        *pos++ = (key->conf.keyidx << 6) | (1 << 5) /* Ext IV */;
         *pos++ = key->u.tkip.iv32 & 0xff;
         *pos++ = (key->u.tkip.iv32 >> 8) & 0xff;
         *pos++ = (key->u.tkip.iv32 >> 16) & 0xff;
@@ -194,7 +194,7 @@ u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
 void ieee80211_tkip_gen_phase1key(struct ieee80211_key *key, u8 *ta,
                                   u16 *phase1key)
 {
-        tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+        tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
                            key->u.tkip.iv32, phase1key);
 }
 
@@ -204,12 +204,13 @@ void ieee80211_tkip_gen_rc4key(struct ieee80211_key *key, u8 *ta,
         /* Calculate per-packet key */
         if (key->u.tkip.iv16 == 0 || !key->u.tkip.tx_initialized) {
                 /* IV16 wrapped around - perform TKIP phase 1 */
-                tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+                tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
                                    key->u.tkip.iv32, key->u.tkip.p1k);
                 key->u.tkip.tx_initialized = 1;
         }
 
-        tkip_mixing_phase2(key->u.tkip.p1k, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+        tkip_mixing_phase2(key->u.tkip.p1k,
+                           &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
                            key->u.tkip.iv16, rc4key);
 }
 
@@ -266,7 +267,7 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
         if (!(keyid & (1 << 5)))
                 return TKIP_DECRYPT_NO_EXT_IV;
 
-        if ((keyid >> 6) != key->keyidx)
+        if ((keyid >> 6) != key->conf.keyidx)
                 return TKIP_DECRYPT_INVALID_KEYIDX;
 
         if (key->u.tkip.rx_initialized[queue] &&
@@ -293,7 +294,7 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
             key->u.tkip.iv32_rx[queue] != iv32) {
                 key->u.tkip.rx_initialized[queue] = 1;
                 /* IV16 wrapped around - perform TKIP phase 1 */
-                tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+                tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
                                    iv32, key->u.tkip.p1k_rx[queue]);
 #ifdef CONFIG_TKIP_DEBUG
                 {
@@ -302,7 +303,8 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
                                " TK=", MAC_ARG(ta));
                         for (i = 0; i < 16; i++)
                                 printk("%02x ",
-                                       key->key[ALG_TKIP_TEMP_ENCR_KEY + i]);
+                                       key->conf.key[
+                                                ALG_TKIP_TEMP_ENCR_KEY + i]);
                         printk("\n");
                         printk(KERN_DEBUG "TKIP decrypt: P1K=");
                         for (i = 0; i < 5; i++)
@@ -313,7 +315,7 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
         }
 
         tkip_mixing_phase2(key->u.tkip.p1k_rx[queue],
-                           &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+                           &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
                            iv16, rc4key);
 #ifdef CONFIG_TKIP_DEBUG
         {