/*
* Host AP crypt: host-based CCMP encryption implementation for Host AP driver
*
- * Copyright (c) 2003-2004, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* more details.
*/
+#include <linux/kernel.h>
+#include <linux/err.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
int key_idx;
- struct crypto_tfm *tfm;
+ struct crypto_cipher *tfm;
/* scratch buffers for virt_to_page() (crypto API) */
u8 tx_b0[AES_BLOCK_LEN], tx_b[AES_BLOCK_LEN],
u8 rx_b0[AES_BLOCK_LEN], rx_b[AES_BLOCK_LEN], rx_a[AES_BLOCK_LEN];
};
-static void ieee80211_ccmp_aes_encrypt(struct crypto_tfm *tfm,
- const u8 pt[16], u8 ct[16])
+static inline void ieee80211_ccmp_aes_encrypt(struct crypto_cipher *tfm,
+ const u8 pt[16], u8 ct[16])
{
- struct scatterlist src, dst;
-
- src.page = virt_to_page(pt);
- src.offset = offset_in_page(pt);
- src.length = AES_BLOCK_LEN;
-
- dst.page = virt_to_page(ct);
- dst.offset = offset_in_page(ct);
- dst.length = AES_BLOCK_LEN;
-
- crypto_cipher_encrypt(tfm, &dst, &src, AES_BLOCK_LEN);
+ crypto_cipher_encrypt_one(tfm, ct, pt);
}
static void *ieee80211_ccmp_init(int key_idx)
goto fail;
priv->key_idx = key_idx;
- priv->tfm = crypto_alloc_tfm("aes", 0);
- if (priv->tfm == NULL) {
+ priv->tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+ if (IS_ERR(priv->tfm)) {
printk(KERN_DEBUG "ieee80211_crypt_ccmp: could not allocate "
"crypto API aes\n");
+ priv->tfm = NULL;
goto fail;
}
fail:
if (priv) {
if (priv->tfm)
- crypto_free_tfm(priv->tfm);
+ crypto_free_cipher(priv->tfm);
kfree(priv);
}
{
struct ieee80211_ccmp_data *_priv = priv;
if (_priv && _priv->tfm)
- crypto_free_tfm(_priv->tfm);
+ crypto_free_cipher(_priv->tfm);
kfree(priv);
}
b[i] ^= a[i];
}
-static void ccmp_init_blocks(struct crypto_tfm *tfm,
+static void ccmp_init_blocks(struct crypto_cipher *tfm,
struct ieee80211_hdr_4addr *hdr,
u8 * pn, size_t dlen, u8 * b0, u8 * auth, u8 * s0)
{
hdr = (struct ieee80211_hdr_4addr *)skb->data;
ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len, b0, b, s0);
- blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+ blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
last = data_len % AES_BLOCK_LEN;
for (i = 1; i <= blocks; i++) {
int i, blocks, last, len;
size_t data_len = skb->len - hdr_len - CCMP_HDR_LEN - CCMP_MIC_LEN;
u8 *mic = skb->data + skb->len - CCMP_MIC_LEN;
+ DECLARE_MAC_BUF(mac);
if (skb->len < hdr_len + CCMP_HDR_LEN + CCMP_MIC_LEN) {
key->dot11RSNAStatsCCMPFormatErrors++;
if (!(keyidx & (1 << 5))) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: received packet without ExtIV"
- " flag from " MAC_FMT "\n", MAC_ARG(hdr->addr2));
+ " flag from %s\n", print_mac(mac, hdr->addr2));
}
key->dot11RSNAStatsCCMPFormatErrors++;
return -2;
}
if (!key->key_set) {
if (net_ratelimit()) {
- printk(KERN_DEBUG "CCMP: received packet from " MAC_FMT
+ printk(KERN_DEBUG "CCMP: received packet from %s"
" with keyid=%d that does not have a configured"
- " key\n", MAC_ARG(hdr->addr2), keyidx);
+ " key\n", print_mac(mac, hdr->addr2), keyidx);
}
return -3;
}
if (ccmp_replay_check(pn, key->rx_pn)) {
if (net_ratelimit()) {
- printk(KERN_DEBUG "CCMP: replay detected: STA=" MAC_FMT
- " previous PN %02x%02x%02x%02x%02x%02x "
- "received PN %02x%02x%02x%02x%02x%02x\n",
- MAC_ARG(hdr->addr2), MAC_ARG(key->rx_pn),
- MAC_ARG(pn));
+ IEEE80211_DEBUG_DROP("CCMP: replay detected: STA=%s "
+ "previous PN %02x%02x%02x%02x%02x%02x "
+ "received PN %02x%02x%02x%02x%02x%02x\n",
+ print_mac(mac, hdr->addr2),
+ key->rx_pn[0], key->rx_pn[1], key->rx_pn[2],
+ key->rx_pn[3], key->rx_pn[4], key->rx_pn[5],
+ pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]);
}
key->dot11RSNAStatsCCMPReplays++;
return -4;
ccmp_init_blocks(key->tfm, hdr, pn, data_len, b0, a, b);
xor_block(mic, b, CCMP_MIC_LEN);
- blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+ blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
last = data_len % AES_BLOCK_LEN;
for (i = 1; i <= blocks; i++) {
if (memcmp(mic, a, CCMP_MIC_LEN) != 0) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: decrypt failed: STA="
- MAC_FMT "\n", MAC_ARG(hdr->addr2));
+ "%s\n", print_mac(mac, hdr->addr2));
}
key->dot11RSNAStatsCCMPDecryptErrors++;
return -5;
{
struct ieee80211_ccmp_data *data = priv;
int keyidx;
- struct crypto_tfm *tfm = data->tfm;
+ struct crypto_cipher *tfm = data->tfm;
keyidx = data->key_idx;
memset(data, 0, sizeof(*data));
static char *ieee80211_ccmp_print_stats(char *p, void *priv)
{
struct ieee80211_ccmp_data *ccmp = priv;
+
p += sprintf(p, "key[%d] alg=CCMP key_set=%d "
"tx_pn=%02x%02x%02x%02x%02x%02x "
"rx_pn=%02x%02x%02x%02x%02x%02x "
"format_errors=%d replays=%d decrypt_errors=%d\n",
ccmp->key_idx, ccmp->key_set,
- MAC_ARG(ccmp->tx_pn), MAC_ARG(ccmp->rx_pn),
+ ccmp->tx_pn[0], ccmp->tx_pn[1], ccmp->tx_pn[2],
+ ccmp->tx_pn[3], ccmp->tx_pn[4], ccmp->tx_pn[5],
+ ccmp->rx_pn[0], ccmp->rx_pn[1], ccmp->rx_pn[2],
+ ccmp->rx_pn[3], ccmp->rx_pn[4], ccmp->rx_pn[5],
ccmp->dot11RSNAStatsCCMPFormatErrors,
ccmp->dot11RSNAStatsCCMPReplays,
ccmp->dot11RSNAStatsCCMPDecryptErrors);