Commit a1d38394 authored by Herbert Xu's avatar Herbert Xu
Browse files

staging: rtl8192e: Replace uses of obsolete blkcipher and hash



The interfaces blkcipher and hash are obsolete.  This patch replaces
them with skcipher and ahash respectively.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fdb89b1b
......@@ -9,6 +9,8 @@
* more details.
*/
#include <crypto/hash.h>
#include <crypto/skcipher.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
......@@ -18,7 +20,6 @@
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <linux/string.h>
#include <linux/crypto.h>
#include <linux/scatterlist.h>
#include <linux/crc32.h>
#include <linux/etherdevice.h>
......@@ -48,10 +49,10 @@ struct rtllib_tkip_data {
u32 dot11RSNAStatsTKIPLocalMICFailures;
int key_idx;
struct crypto_blkcipher *rx_tfm_arc4;
struct crypto_hash *rx_tfm_michael;
struct crypto_blkcipher *tx_tfm_arc4;
struct crypto_hash *tx_tfm_michael;
struct crypto_skcipher *rx_tfm_arc4;
struct crypto_ahash *rx_tfm_michael;
struct crypto_skcipher *tx_tfm_arc4;
struct crypto_ahash *tx_tfm_michael;
/* scratch buffers for virt_to_page() (crypto API) */
u8 rx_hdr[16];
u8 tx_hdr[16];
......@@ -65,32 +66,32 @@ static void *rtllib_tkip_init(int key_idx)
if (priv == NULL)
goto fail;
priv->key_idx = key_idx;
priv->tx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->tx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(priv->tx_tfm_arc4)) {
pr_debug("Could not allocate crypto API arc4\n");
priv->tx_tfm_arc4 = NULL;
goto fail;
}
priv->tx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
CRYPTO_ALG_ASYNC);
priv->tx_tfm_michael = crypto_alloc_ahash("michael_mic", 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(priv->tx_tfm_michael)) {
pr_debug("Could not allocate crypto API michael_mic\n");
priv->tx_tfm_michael = NULL;
goto fail;
}
priv->rx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->rx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(priv->rx_tfm_arc4)) {
pr_debug("Could not allocate crypto API arc4\n");
priv->rx_tfm_arc4 = NULL;
goto fail;
}
priv->rx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
CRYPTO_ALG_ASYNC);
priv->rx_tfm_michael = crypto_alloc_ahash("michael_mic", 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(priv->rx_tfm_michael)) {
pr_debug("Could not allocate crypto API michael_mic\n");
priv->rx_tfm_michael = NULL;
......@@ -100,14 +101,10 @@ static void *rtllib_tkip_init(int key_idx)
fail:
if (priv) {
if (priv->tx_tfm_michael)
crypto_free_hash(priv->tx_tfm_michael);
if (priv->tx_tfm_arc4)
crypto_free_blkcipher(priv->tx_tfm_arc4);
if (priv->rx_tfm_michael)
crypto_free_hash(priv->rx_tfm_michael);
if (priv->rx_tfm_arc4)
crypto_free_blkcipher(priv->rx_tfm_arc4);
crypto_free_ahash(priv->tx_tfm_michael);
crypto_free_skcipher(priv->tx_tfm_arc4);
crypto_free_ahash(priv->rx_tfm_michael);
crypto_free_skcipher(priv->rx_tfm_arc4);
kfree(priv);
}
......@@ -120,14 +117,10 @@ static void rtllib_tkip_deinit(void *priv)
struct rtllib_tkip_data *_priv = priv;
if (_priv) {
if (_priv->tx_tfm_michael)
crypto_free_hash(_priv->tx_tfm_michael);
if (_priv->tx_tfm_arc4)
crypto_free_blkcipher(_priv->tx_tfm_arc4);
if (_priv->rx_tfm_michael)
crypto_free_hash(_priv->rx_tfm_michael);
if (_priv->rx_tfm_arc4)
crypto_free_blkcipher(_priv->rx_tfm_arc4);
crypto_free_ahash(_priv->tx_tfm_michael);
crypto_free_skcipher(_priv->tx_tfm_arc4);
crypto_free_ahash(_priv->rx_tfm_michael);
crypto_free_skcipher(_priv->rx_tfm_arc4);
}
kfree(priv);
}
......@@ -301,7 +294,6 @@ static int rtllib_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
struct rtllib_hdr_4addr *hdr;
struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb +
MAX_DEV_ADDR_SIZE);
struct blkcipher_desc desc = {.tfm = tkey->tx_tfm_arc4};
int ret = 0;
u8 rc4key[16], *icv;
u32 crc;
......@@ -347,6 +339,8 @@ static int rtllib_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
*pos++ = (tkey->tx_iv32 >> 24) & 0xff;
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, tkey->tx_tfm_arc4);
icv = skb_put(skb, 4);
crc = ~crc32_le(~0, pos, len);
icv[0] = crc;
......@@ -357,8 +351,12 @@ static int rtllib_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
sg_init_one(&sg, pos, len+4);
crypto_blkcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
ret = crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
crypto_skcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
skcipher_request_set_tfm(req, tkey->tx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
ret = crypto_skcipher_encrypt(req);
skcipher_request_zero(req);
}
tkey->tx_iv16++;
......@@ -384,12 +382,12 @@ static int rtllib_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
struct rtllib_hdr_4addr *hdr;
struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb +
MAX_DEV_ADDR_SIZE);
struct blkcipher_desc desc = {.tfm = tkey->rx_tfm_arc4};
u8 rc4key[16];
u8 icv[4];
u32 crc;
struct scatterlist sg;
int plen;
int err;
if (skb->len < hdr_len + 8 + 4)
return -1;
......@@ -425,6 +423,8 @@ static int rtllib_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
pos += 8;
if (!tcb_desc->bHwSec || (skb->cb[0] == 1)) {
SKCIPHER_REQUEST_ON_STACK(req, tkey->rx_tfm_arc4);
if ((iv32 < tkey->rx_iv32 ||
(iv32 == tkey->rx_iv32 && iv16 <= tkey->rx_iv16)) &&
tkey->initialized) {
......@@ -450,8 +450,13 @@ static int rtllib_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
sg_init_one(&sg, pos, plen+4);
crypto_blkcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4)) {
crypto_skcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
skcipher_request_set_tfm(req, tkey->rx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);
err = crypto_skcipher_decrypt(req);
skcipher_request_zero(req);
if (err) {
if (net_ratelimit()) {
netdev_dbg(skb->dev,
"Failed to decrypt received packet from %pM\n",
......@@ -500,11 +505,12 @@ static int rtllib_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
}
static int michael_mic(struct crypto_hash *tfm_michael, u8 *key, u8 *hdr,
static int michael_mic(struct crypto_ahash *tfm_michael, u8 *key, u8 *hdr,
u8 *data, size_t data_len, u8 *mic)
{
struct hash_desc desc;
AHASH_REQUEST_ON_STACK(req, tfm_michael);
struct scatterlist sg[2];
int err;
if (tfm_michael == NULL) {
pr_warn("michael_mic: tfm_michael == NULL\n");
......@@ -514,12 +520,15 @@ static int michael_mic(struct crypto_hash *tfm_michael, u8 *key, u8 *hdr,
sg_set_buf(&sg[0], hdr, 16);
sg_set_buf(&sg[1], data, data_len);
if (crypto_hash_setkey(tfm_michael, key, 8))
if (crypto_ahash_setkey(tfm_michael, key, 8))
return -1;
desc.tfm = tfm_michael;
desc.flags = 0;
return crypto_hash_digest(&desc, sg, data_len + 16, mic);
ahash_request_set_tfm(req, tfm_michael);
ahash_request_set_callback(req, 0, NULL, NULL);
ahash_request_set_crypt(req, sg, mic, data_len + 16);
err = crypto_ahash_digest(req);
ahash_request_zero(req);
return err;
}
static void michael_mic_hdr(struct sk_buff *skb, u8 *hdr)
......@@ -655,10 +664,10 @@ static int rtllib_tkip_set_key(void *key, int len, u8 *seq, void *priv)
{
struct rtllib_tkip_data *tkey = priv;
int keyidx;
struct crypto_hash *tfm = tkey->tx_tfm_michael;
struct crypto_blkcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_hash *tfm3 = tkey->rx_tfm_michael;
struct crypto_blkcipher *tfm4 = tkey->rx_tfm_arc4;
struct crypto_ahash *tfm = tkey->tx_tfm_michael;
struct crypto_skcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_ahash *tfm3 = tkey->rx_tfm_michael;
struct crypto_skcipher *tfm4 = tkey->rx_tfm_arc4;
keyidx = tkey->key_idx;
memset(tkey, 0, sizeof(*tkey));
......
......@@ -9,6 +9,7 @@
* more details.
*/
#include <crypto/skcipher.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
......@@ -17,8 +18,6 @@
#include <linux/string.h>
#include "rtllib.h"
#include <linux/crypto.h>
#include <linux/scatterlist.h>
#include <linux/crc32.h>
......@@ -28,8 +27,8 @@ struct prism2_wep_data {
u8 key[WEP_KEY_LEN + 1];
u8 key_len;
u8 key_idx;
struct crypto_blkcipher *tx_tfm;
struct crypto_blkcipher *rx_tfm;
struct crypto_skcipher *tx_tfm;
struct crypto_skcipher *rx_tfm;
};
......@@ -42,13 +41,13 @@ static void *prism2_wep_init(int keyidx)
goto fail;
priv->key_idx = keyidx;
priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->tx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(priv->tx_tfm)) {
pr_debug("rtllib_crypt_wep: could not allocate crypto API arc4\n");
priv->tx_tfm = NULL;
goto fail;
}
priv->rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->rx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(priv->rx_tfm)) {
pr_debug("rtllib_crypt_wep: could not allocate crypto API arc4\n");
priv->rx_tfm = NULL;
......@@ -62,10 +61,8 @@ static void *prism2_wep_init(int keyidx)
fail:
if (priv) {
if (priv->tx_tfm)
crypto_free_blkcipher(priv->tx_tfm);
if (priv->rx_tfm)
crypto_free_blkcipher(priv->rx_tfm);
crypto_free_skcipher(priv->tx_tfm);
crypto_free_skcipher(priv->rx_tfm);
kfree(priv);
}
return NULL;
......@@ -77,10 +74,8 @@ static void prism2_wep_deinit(void *priv)
struct prism2_wep_data *_priv = priv;
if (_priv) {
if (_priv->tx_tfm)
crypto_free_blkcipher(_priv->tx_tfm);
if (_priv->rx_tfm)
crypto_free_blkcipher(_priv->rx_tfm);
crypto_free_skcipher(_priv->tx_tfm);
crypto_free_skcipher(_priv->rx_tfm);
}
kfree(priv);
}
......@@ -99,10 +94,10 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
u8 *pos;
struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb +
MAX_DEV_ADDR_SIZE);
struct blkcipher_desc desc = {.tfm = wep->tx_tfm};
u32 crc;
u8 *icv;
struct scatterlist sg;
int err;
if (skb_headroom(skb) < 4 || skb_tailroom(skb) < 4 ||
skb->len < hdr_len){
......@@ -140,6 +135,7 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
memcpy(key + 3, wep->key, wep->key_len);
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, wep->tx_tfm);
/* Append little-endian CRC32 and encrypt it to produce ICV */
crc = ~crc32_le(~0, pos, len);
......@@ -150,8 +146,13 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
icv[3] = crc >> 24;
sg_init_one(&sg, pos, len+4);
crypto_blkcipher_setkey(wep->tx_tfm, key, klen);
return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
crypto_skcipher_setkey(wep->tx_tfm, key, klen);
skcipher_request_set_tfm(req, wep->tx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
err = crypto_skcipher_encrypt(req);
skcipher_request_zero(req);
return err;
}
return 0;
......@@ -173,10 +174,10 @@ static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
u8 keyidx, *pos;
struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb +
MAX_DEV_ADDR_SIZE);
struct blkcipher_desc desc = {.tfm = wep->rx_tfm};
u32 crc;
u8 icv[4];
struct scatterlist sg;
int err;
if (skb->len < hdr_len + 8)
return -1;
......@@ -198,9 +199,16 @@ static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
plen = skb->len - hdr_len - 8;
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, wep->rx_tfm);
sg_init_one(&sg, pos, plen+4);
crypto_blkcipher_setkey(wep->rx_tfm, key, klen);
if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4))
crypto_skcipher_setkey(wep->rx_tfm, key, klen);
skcipher_request_set_tfm(req, wep->rx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);
err = crypto_skcipher_decrypt(req);
skcipher_request_zero(req);
if (err)
return -7;
crc = ~crc32_le(~0, pos, plen);
icv[0] = crc;
......
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