[PATCH] ieee80211: Hardware crypto and fragmentation offload support

tree 5322d496af90d03ffbec27292dc1a6268a746ede
parent 6c9364386ccb786e4a84427ab3ad712f0b7b8904
author James Ketrenos <jketreno@linux.intel.com> 1124432367 -0500
committer James Ketrenos <jketreno@linux.intel.com> 1127311810 -0500

Hardware crypto and fragmentation offload support added (Zhu Yi)

Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 29 insertions, 21 deletions

diff --git a/net/ieee80211/ieee80211_wx.c b/net/ieee80211/ieee80211_wx.c
index fc4e1377aba7..f88c8116a23c 100644
--- a/net/ieee80211/ieee80211_wx.c
+++ b/net/ieee80211/ieee80211_wx.c
@@ -278,6 +278,7 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
         };
         int i, key, key_provided, len;
         struct ieee80211_crypt_data **crypt;
+        int host_crypto = ieee->host_encrypt || ieee->host_decrypt;
 
         IEEE80211_DEBUG_WX("SET_ENCODE\n");
 
@@ -318,6 +319,7 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 
                 if (i == WEP_KEYS) {
                         sec.enabled = 0;
+                        sec.encrypt = 0;
                         sec.level = SEC_LEVEL_0;
                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
                 }
@@ -326,6 +328,7 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
         }
 
         sec.enabled = 1;
+        sec.encrypt = 1;
         sec.flags |= SEC_ENABLED;
 
         if (*crypt != NULL && (*crypt)->ops != NULL &&
@@ -335,7 +338,7 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
                 ieee80211_crypt_delayed_deinit(ieee, crypt);
         }
 
-        if (*crypt == NULL) {
+        if (*crypt == NULL && host_crypto) {
                 struct ieee80211_crypt_data *new_crypt;
 
                 /* take WEP into use */
@@ -375,31 +378,34 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
                                    key, escape_essid(sec.keys[key], len),
                                    erq->length, len);
                 sec.key_sizes[key] = len;
-                (*crypt)->ops->set_key(sec.keys[key], len, NULL,
-                                       (*crypt)->priv);
+                if (*crypt)
+                        (*crypt)->ops->set_key(sec.keys[key], len, NULL,
+                                               (*crypt)->priv);
                 sec.flags |= (1 << key);
                 /* This ensures a key will be activated if no key is
                  * explicitely set */
                 if (key == sec.active_key)
                         sec.flags |= SEC_ACTIVE_KEY;
+
         } else {
-                len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
-                                             NULL, (*crypt)->priv);
-                if (len == 0) {
-                        /* Set a default key of all 0 */
-                        IEEE80211_DEBUG_WX("Setting key %d to all zero.\n",
-                                           key);
-                        memset(sec.keys[key], 0, 13);
-                        (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
-                                               (*crypt)->priv);
-                        sec.key_sizes[key] = 13;
-                        sec.flags |= (1 << key);
+                if (host_crypto) {
+                        len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
+                                                     NULL, (*crypt)->priv);
+                        if (len == 0) {
+                                /* Set a default key of all 0 */
+                                IEEE80211_DEBUG_WX("Setting key %d to all "
+                                                   "zero.\n", key);
+                                memset(sec.keys[key], 0, 13);
+                                (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
+                                                       (*crypt)->priv);
+                                sec.key_sizes[key] = 13;
+                                sec.flags |= (1 << key);
+                        }
                 }
-
                 /* No key data - just set the default TX key index */
                 if (key_provided) {
-                        IEEE80211_DEBUG_WX
-                            ("Setting key %d to default Tx key.\n", key);
+                        IEEE80211_DEBUG_WX("Setting key %d to default Tx "
+                                           "key.\n", key);
                         ieee->tx_keyidx = key;
                         sec.active_key = key;
                         sec.flags |= SEC_ACTIVE_KEY;
@@ -442,6 +448,7 @@ int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
         struct iw_point *erq = &(wrqu->encoding);
         int len, key;
         struct ieee80211_crypt_data *crypt;
+        struct ieee80211_security *sec = &ieee->sec;
 
         IEEE80211_DEBUG_WX("GET_ENCODE\n");
 
@@ -456,13 +463,13 @@ int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
         crypt = ieee->crypt[key];
         erq->flags = key + 1;
 
-        if (crypt == NULL || crypt->ops == NULL) {
+        if (!sec->enabled) {
                 erq->length = 0;
                 erq->flags |= IW_ENCODE_DISABLED;
                 return 0;
         }
 
-        if (strcmp(crypt->ops->name, "WEP") != 0) {
+        if (sec->level != SEC_LEVEL_1) {
                 /* only WEP is supported with wireless extensions, so just
                  * report that encryption is used */
                 erq->length = 0;
@@ -470,9 +477,10 @@ int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
                 return 0;
         }
 
-        len = crypt->ops->get_key(keybuf, WEP_KEY_LEN, NULL, crypt->priv);
-        erq->length = (len >= 0 ? len : 0);
+        len = sec->key_sizes[key];
+        memcpy(keybuf, sec->keys[key], len);
 
+        erq->length = (len >= 0 ? len : 0);
         erq->flags |= IW_ENCODE_ENABLED;
 
         if (ieee->open_wep)