mac80211: 802.11w - Use BIP (AES-128-CMAC)
Add mechanism for managing BIP keys (IGTK) and integrate BIP into the
TX/RX paths.
Signed-off-by: Jouni Malinen <j@w1.fi>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
index 6424ac5..99c7525 100644
--- a/net/mac80211/debugfs_key.c
+++ b/net/mac80211/debugfs_key.c
@@ -76,6 +76,9 @@
case ALG_CCMP:
alg = "CCMP\n";
break;
+ case ALG_AES_CMAC:
+ alg = "AES-128-CMAC\n";
+ break;
default:
return 0;
}
@@ -105,6 +108,12 @@
len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
break;
+ case ALG_AES_CMAC:
+ tpn = key->u.aes_cmac.tx_pn;
+ len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
+ tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
+ tpn[5]);
+ break;
default:
return 0;
}
@@ -142,6 +151,14 @@
}
len = p - buf;
break;
+ case ALG_AES_CMAC:
+ rpn = key->u.aes_cmac.rx_pn;
+ p += scnprintf(p, sizeof(buf)+buf-p,
+ "%02x%02x%02x%02x%02x%02x\n",
+ rpn[0], rpn[1], rpn[2],
+ rpn[3], rpn[4], rpn[5]);
+ len = p - buf;
+ break;
default:
return 0;
}
@@ -156,13 +173,40 @@
char buf[20];
int len;
- if (key->conf.alg != ALG_CCMP)
+ switch (key->conf.alg) {
+ case ALG_CCMP:
+ len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
+ break;
+ case ALG_AES_CMAC:
+ len = scnprintf(buf, sizeof(buf), "%u\n",
+ key->u.aes_cmac.replays);
+ break;
+ default:
return 0;
- len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
+ }
return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(replays);
+static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct ieee80211_key *key = file->private_data;
+ char buf[20];
+ int len;
+
+ switch (key->conf.alg) {
+ case ALG_AES_CMAC:
+ len = scnprintf(buf, sizeof(buf), "%u\n",
+ key->u.aes_cmac.icverrors);
+ break;
+ default:
+ return 0;
+ }
+ return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+KEY_OPS(icverrors);
+
static ssize_t key_key_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
@@ -222,6 +266,7 @@
DEBUGFS_ADD(tx_spec);
DEBUGFS_ADD(rx_spec);
DEBUGFS_ADD(replays);
+ DEBUGFS_ADD(icverrors);
DEBUGFS_ADD(key);
DEBUGFS_ADD(ifindex);
};
@@ -243,6 +288,7 @@
DEBUGFS_DEL(tx_spec);
DEBUGFS_DEL(rx_spec);
DEBUGFS_DEL(replays);
+ DEBUGFS_DEL(icverrors);
DEBUGFS_DEL(key);
DEBUGFS_DEL(ifindex);
@@ -280,6 +326,35 @@
sdata->common_debugfs.default_key = NULL;
}
+void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
+{
+ char buf[50];
+ struct ieee80211_key *key;
+
+ if (!sdata->debugfsdir)
+ return;
+
+ /* this is running under the key lock */
+
+ key = sdata->default_mgmt_key;
+ if (key) {
+ sprintf(buf, "../keys/%d", key->debugfs.cnt);
+ sdata->common_debugfs.default_mgmt_key =
+ debugfs_create_symlink("default_mgmt_key",
+ sdata->debugfsdir, buf);
+ } else
+ ieee80211_debugfs_key_remove_mgmt_default(sdata);
+}
+
+void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
+{
+ if (!sdata)
+ return;
+
+ debugfs_remove(sdata->common_debugfs.default_mgmt_key);
+ sdata->common_debugfs.default_mgmt_key = NULL;
+}
+
void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
struct sta_info *sta)
{