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mac80211: 802.11w - Use BIP (AES-128-CMAC)

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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>
This commit is contained in:
Jouni Malinen
2009-01-08 13:32:02 +02:00
committed by John W. Linville
parent 765cb46a3f
commit 3cfcf6ac6d
14 changed files with 317 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/mac80211/debugfs_key.c
+77 -2
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@@ -76,6 +76,9 @@ static ssize_t key_algorithm_read(struct file *file,
case ALG_CCMP:
alg = "CCMP\n";
break;
case ALG_AES_CMAC:
alg = "AES-128-CMAC\n";
break;
default:
return 0;
}
@@ -105,6 +108,12 @@ static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
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 @@ static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
}
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 @@ static ssize_t key_replays_read(struct file *file, char __user *userbuf,
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 @@ void ieee80211_debugfs_key_add(struct ieee80211_key *key)
DEBUGFS_ADD(tx_spec);
DEBUGFS_ADD(rx_spec);
DEBUGFS_ADD(replays);
DEBUGFS_ADD(icverrors);
DEBUGFS_ADD(key);
DEBUGFS_ADD(ifindex);
};
@@ -243,6 +288,7 @@ void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
DEBUGFS_DEL(tx_spec);
DEBUGFS_DEL(rx_spec);
DEBUGFS_DEL(replays);
DEBUGFS_DEL(icverrors);
DEBUGFS_DEL(key);
DEBUGFS_DEL(ifindex);
@@ -280,6 +326,35 @@ void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
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)
{