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path: root/net/ieee80211/ieee80211_crypt_ccmp.c
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Diffstat (limited to 'net/ieee80211/ieee80211_crypt_ccmp.c')
-rw-r--r--net/ieee80211/ieee80211_crypt_ccmp.c32
1 files changed, 12 insertions, 20 deletions
diff --git a/net/ieee80211/ieee80211_crypt_ccmp.c b/net/ieee80211/ieee80211_crypt_ccmp.c
index 098c66846339..35aa3426c3fa 100644
--- a/net/ieee80211/ieee80211_crypt_ccmp.c
+++ b/net/ieee80211/ieee80211_crypt_ccmp.c
@@ -9,6 +9,7 @@
9 * more details. 9 * more details.
10 */ 10 */
11 11
12#include <linux/err.h>
12#include <linux/module.h> 13#include <linux/module.h>
13#include <linux/init.h> 14#include <linux/init.h>
14#include <linux/slab.h> 15#include <linux/slab.h>
@@ -48,7 +49,7 @@ struct ieee80211_ccmp_data {
48 49
49 int key_idx; 50 int key_idx;
50 51
51 struct crypto_tfm *tfm; 52 struct crypto_cipher *tfm;
52 53
53 /* scratch buffers for virt_to_page() (crypto API) */ 54 /* scratch buffers for virt_to_page() (crypto API) */
54 u8 tx_b0[AES_BLOCK_LEN], tx_b[AES_BLOCK_LEN], 55 u8 tx_b0[AES_BLOCK_LEN], tx_b[AES_BLOCK_LEN],
@@ -56,20 +57,10 @@ struct ieee80211_ccmp_data {
56 u8 rx_b0[AES_BLOCK_LEN], rx_b[AES_BLOCK_LEN], rx_a[AES_BLOCK_LEN]; 57 u8 rx_b0[AES_BLOCK_LEN], rx_b[AES_BLOCK_LEN], rx_a[AES_BLOCK_LEN];
57}; 58};
58 59
59static void ieee80211_ccmp_aes_encrypt(struct crypto_tfm *tfm, 60static inline void ieee80211_ccmp_aes_encrypt(struct crypto_cipher *tfm,
60 const u8 pt[16], u8 ct[16]) 61 const u8 pt[16], u8 ct[16])
61{ 62{
62 struct scatterlist src, dst; 63 crypto_cipher_encrypt_one(tfm, ct, pt);
63
64 src.page = virt_to_page(pt);
65 src.offset = offset_in_page(pt);
66 src.length = AES_BLOCK_LEN;
67
68 dst.page = virt_to_page(ct);
69 dst.offset = offset_in_page(ct);
70 dst.length = AES_BLOCK_LEN;
71
72 crypto_cipher_encrypt(tfm, &dst, &src, AES_BLOCK_LEN);
73} 64}
74 65
75static void *ieee80211_ccmp_init(int key_idx) 66static void *ieee80211_ccmp_init(int key_idx)
@@ -81,10 +72,11 @@ static void *ieee80211_ccmp_init(int key_idx)
81 goto fail; 72 goto fail;
82 priv->key_idx = key_idx; 73 priv->key_idx = key_idx;
83 74
84 priv->tfm = crypto_alloc_tfm("aes", 0); 75 priv->tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
85 if (priv->tfm == NULL) { 76 if (IS_ERR(priv->tfm)) {
86 printk(KERN_DEBUG "ieee80211_crypt_ccmp: could not allocate " 77 printk(KERN_DEBUG "ieee80211_crypt_ccmp: could not allocate "
87 "crypto API aes\n"); 78 "crypto API aes\n");
79 priv->tfm = NULL;
88 goto fail; 80 goto fail;
89 } 81 }
90 82
@@ -93,7 +85,7 @@ static void *ieee80211_ccmp_init(int key_idx)
93 fail: 85 fail:
94 if (priv) { 86 if (priv) {
95 if (priv->tfm) 87 if (priv->tfm)
96 crypto_free_tfm(priv->tfm); 88 crypto_free_cipher(priv->tfm);
97 kfree(priv); 89 kfree(priv);
98 } 90 }
99 91
@@ -104,7 +96,7 @@ static void ieee80211_ccmp_deinit(void *priv)
104{ 96{
105 struct ieee80211_ccmp_data *_priv = priv; 97 struct ieee80211_ccmp_data *_priv = priv;
106 if (_priv && _priv->tfm) 98 if (_priv && _priv->tfm)
107 crypto_free_tfm(_priv->tfm); 99 crypto_free_cipher(_priv->tfm);
108 kfree(priv); 100 kfree(priv);
109} 101}
110 102
@@ -115,7 +107,7 @@ static inline void xor_block(u8 * b, u8 * a, size_t len)
115 b[i] ^= a[i]; 107 b[i] ^= a[i];
116} 108}
117 109
118static void ccmp_init_blocks(struct crypto_tfm *tfm, 110static void ccmp_init_blocks(struct crypto_cipher *tfm,
119 struct ieee80211_hdr_4addr *hdr, 111 struct ieee80211_hdr_4addr *hdr,
120 u8 * pn, size_t dlen, u8 * b0, u8 * auth, u8 * s0) 112 u8 * pn, size_t dlen, u8 * b0, u8 * auth, u8 * s0)
121{ 113{
@@ -398,7 +390,7 @@ static int ieee80211_ccmp_set_key(void *key, int len, u8 * seq, void *priv)
398{ 390{
399 struct ieee80211_ccmp_data *data = priv; 391 struct ieee80211_ccmp_data *data = priv;
400 int keyidx; 392 int keyidx;
401 struct crypto_tfm *tfm = data->tfm; 393 struct crypto_cipher *tfm = data->tfm;
402 394
403 keyidx = data->key_idx; 395 keyidx = data->key_idx;
404 memset(data, 0, sizeof(*data)); 396 memset(data, 0, sizeof(*data));