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authorJohannes Berg <johannes@sipsolutions.net>2007-09-14 11:10:25 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:49:29 -0700
commit6a7664d451e7014b1a6828e50ccb3308d0b84816 (patch)
tree01c319d33d8c5b61d1946e6c76e27ec9dd44329b /net/mac80211
parent7ac1bd6aecc92cfe6ec11891819dd4c26f2f7879 (diff)
downloadblackbird-op-linux-6a7664d451e7014b1a6828e50ccb3308d0b84816.tar.gz
blackbird-op-linux-6a7664d451e7014b1a6828e50ccb3308d0b84816.zip
[MAC80211]: remove HW_KEY_IDX_INVALID
This patch makes the mac80211/driver interface rely only on the IEEE80211_TXCTL_DO_NOT_ENCRYPT flag to signal to the driver whether a frame should be encrypted or not, since mac80211 internally no longer relies on HW_KEY_IDX_INVALID either this removes it, changes the key index to be a u8 in all places and makes the full range of the value available to drivers. 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>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/key.c4
-rw-r--r--net/mac80211/tx.c16
2 files changed, 12 insertions, 8 deletions
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index b10e33deb63e..dd6fc4aa3ff5 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -73,8 +73,6 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
key->sdata->dev->dev_addr, addr,
&key->conf);
- WARN_ON(!ret && (key->conf.hw_key_idx == HW_KEY_IDX_INVALID));
-
if (!ret)
key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE;
@@ -109,7 +107,6 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
key->conf.keyidx, MAC_ARG(addr), ret);
key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;
- key->conf.hw_key_idx = HW_KEY_IDX_INVALID;
}
struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
@@ -132,7 +129,6 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
* Default to software encryption; we'll later upload the
* key to the hardware if possible.
*/
- key->conf.hw_key_idx = HW_KEY_IDX_INVALID;
key->conf.flags = 0;
key->flags = 0;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index e2ae1e1fcc7b..3d57e6d80f6d 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -430,8 +430,6 @@ ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
{
struct ieee80211_key *key;
- tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
-
if (unlikely(tx->u.tx.control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
tx->key = NULL;
else if (tx->sta && (key = rcu_dereference(tx->sta->key)))
@@ -442,8 +440,10 @@ ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
!(tx->sdata->eapol && ieee80211_is_eapol(tx->skb))) {
I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
return TXRX_DROP;
- } else
+ } else {
tx->key = NULL;
+ tx->u.tx.control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
+ }
if (tx->key) {
tx->key->tx_rx_count++;
@@ -724,6 +724,15 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
}
}
+ /*
+ * Tell hardware to not encrypt when we had sw crypto.
+ * Because we use the same flag to internally indicate that
+ * no (software) encryption should be done, we have to set it
+ * after all crypto handlers.
+ */
+ if (tx->key && !(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
+ tx->u.tx.control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
+
return TXRX_CONTINUE;
}
@@ -833,7 +842,6 @@ __ieee80211_parse_tx_radiotap(
*/
control->retry_limit = 1; /* no retry */
- control->key_idx = HW_KEY_IDX_INVALID;
control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS |
IEEE80211_TXCTL_USE_CTS_PROTECT);
control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT |
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