1 files changed, 42 insertions, 26 deletions

diff --git a/drivers/net/ppp_mppe.c b/drivers/net/ppp_mppe.c
index 51ff9a9d1bb5..f3655fd772f5 100644
--- a/drivers/net/ppp_mppe.c
+++ b/drivers/net/ppp_mppe.c
@@ -43,6 +43,7 @@
  *                    deprecated in 2.6
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/version.h>
@@ -64,12 +65,13 @@ MODULE_LICENSE("Dual BSD/GPL");
 MODULE_ALIAS("ppp-compress-" __stringify(CI_MPPE));
 MODULE_VERSION("1.0.2");
 
-static void
+static unsigned int
 setup_sg(struct scatterlist *sg, const void *address, unsigned int length)
 {
         sg[0].page = virt_to_page(address);
         sg[0].offset = offset_in_page(address);
         sg[0].length = length;
+        return length;
 }
 
 #define SHA1_PAD_SIZE 40
@@ -95,8 +97,8 @@ static inline void sha_pad_init(struct sha_pad *shapad)
  * State for an MPPE (de)compressor.
  */
 struct ppp_mppe_state {
-        struct crypto_tfm *arc4;
-        struct crypto_tfm *sha1;
+        struct crypto_blkcipher *arc4;
+        struct crypto_hash *sha1;
         unsigned char *sha1_digest;
         unsigned char master_key[MPPE_MAX_KEY_LEN];
         unsigned char session_key[MPPE_MAX_KEY_LEN];
@@ -136,14 +138,21 @@ struct ppp_mppe_state {
  */
 static void get_new_key_from_sha(struct ppp_mppe_state * state, unsigned char *InterimKey)
 {
+        struct hash_desc desc;
         struct scatterlist sg[4];
+        unsigned int nbytes;
 
-        setup_sg(&sg[0], state->master_key, state->keylen);
-        setup_sg(&sg[1], sha_pad->sha_pad1, sizeof(sha_pad->sha_pad1));
-        setup_sg(&sg[2], state->session_key, state->keylen);
-        setup_sg(&sg[3], sha_pad->sha_pad2, sizeof(sha_pad->sha_pad2));
+        nbytes = setup_sg(&sg[0], state->master_key, state->keylen);
+        nbytes += setup_sg(&sg[1], sha_pad->sha_pad1,
+                           sizeof(sha_pad->sha_pad1));
+        nbytes += setup_sg(&sg[2], state->session_key, state->keylen);
+        nbytes += setup_sg(&sg[3], sha_pad->sha_pad2,
+                           sizeof(sha_pad->sha_pad2));
 
-        crypto_digest_digest (state->sha1, sg, 4, state->sha1_digest);
+        desc.tfm = state->sha1;
+        desc.flags = 0;
+
+        crypto_hash_digest(&desc, sg, nbytes, state->sha1_digest);
 
         memcpy(InterimKey, state->sha1_digest, state->keylen);
 }
@@ -156,14 +165,15 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key)
 {
         unsigned char InterimKey[MPPE_MAX_KEY_LEN];
         struct scatterlist sg_in[1], sg_out[1];
+        struct blkcipher_desc desc = { .tfm = state->arc4 };
 
         get_new_key_from_sha(state, InterimKey);
         if (!initial_key) {
-                crypto_cipher_setkey(state->arc4, InterimKey, state->keylen);
+                crypto_blkcipher_setkey(state->arc4, InterimKey, state->keylen);
                 setup_sg(sg_in, InterimKey, state->keylen);
                 setup_sg(sg_out, state->session_key, state->keylen);
-                if (crypto_cipher_encrypt(state->arc4, sg_out, sg_in,
-                                      state->keylen) != 0) {
+                if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in,
+                                             state->keylen) != 0) {
                     printk(KERN_WARNING "mppe_rekey: cipher_encrypt failed\n");
                 }
         } else {
@@ -175,7 +185,7 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key)
                 state->session_key[1] = 0x26;
                 state->session_key[2] = 0x9e;
         }
-        crypto_cipher_setkey(state->arc4, state->session_key, state->keylen);
+        crypto_blkcipher_setkey(state->arc4, state->session_key, state->keylen);
 }
 
 /*
@@ -196,15 +206,19 @@ static void *mppe_alloc(unsigned char *options, int optlen)
 
         memset(state, 0, sizeof(*state));
 
-        state->arc4 = crypto_alloc_tfm("arc4", 0);
-        if (!state->arc4)
+        state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
+        if (IS_ERR(state->arc4)) {
+                state->arc4 = NULL;
                 goto out_free;
+        }
 
-        state->sha1 = crypto_alloc_tfm("sha1", 0);
-        if (!state->sha1)
+        state->sha1 = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
+        if (IS_ERR(state->sha1)) {
+                state->sha1 = NULL;
                 goto out_free;
+        }
 
-        digestsize = crypto_tfm_alg_digestsize(state->sha1);
+        digestsize = crypto_hash_digestsize(state->sha1);
         if (digestsize < MPPE_MAX_KEY_LEN)
                 goto out_free;
 
@@ -229,9 +243,9 @@ static void *mppe_alloc(unsigned char *options, int optlen)
             if (state->sha1_digest)
                 kfree(state->sha1_digest);
             if (state->sha1)
-                crypto_free_tfm(state->sha1);
+                crypto_free_hash(state->sha1);
             if (state->arc4)
-                crypto_free_tfm(state->arc4);
+                crypto_free_blkcipher(state->arc4);
             kfree(state);
         out:
         return NULL;
@@ -247,9 +261,9 @@ static void mppe_free(void *arg)
             if (state->sha1_digest)
                 kfree(state->sha1_digest);
             if (state->sha1)
-                crypto_free_tfm(state->sha1);
+                crypto_free_hash(state->sha1);
             if (state->arc4)
-                crypto_free_tfm(state->arc4);
+                crypto_free_blkcipher(state->arc4);
             kfree(state);
         }
 }
@@ -356,6 +370,7 @@ mppe_compress(void *arg, unsigned char *ibuf, unsigned char *obuf,
               int isize, int osize)
 {
         struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg;
+        struct blkcipher_desc desc = { .tfm = state->arc4 };
         int proto;
         struct scatterlist sg_in[1], sg_out[1];
 
@@ -413,7 +428,7 @@ mppe_compress(void *arg, unsigned char *ibuf, unsigned char *obuf,
         /* Encrypt packet */
         setup_sg(sg_in, ibuf, isize);
         setup_sg(sg_out, obuf, osize);
-        if (crypto_cipher_encrypt(state->arc4, sg_out, sg_in, isize) != 0) {
+        if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in, isize) != 0) {
                 printk(KERN_DEBUG "crypto_cypher_encrypt failed\n");
                 return -1;
         }
@@ -462,6 +477,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
                 int osize)
 {
         struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg;
+        struct blkcipher_desc desc = { .tfm = state->arc4 };
         unsigned ccount;
         int flushed = MPPE_BITS(ibuf) & MPPE_BIT_FLUSHED;
         int sanity = 0;
@@ -599,7 +615,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
          */
         setup_sg(sg_in, ibuf, 1);
         setup_sg(sg_out, obuf, 1);
-        if (crypto_cipher_decrypt(state->arc4, sg_out, sg_in, 1) != 0) {
+        if (crypto_blkcipher_decrypt(&desc, sg_out, sg_in, 1) != 0) {
                 printk(KERN_DEBUG "crypto_cypher_decrypt failed\n");
                 return DECOMP_ERROR;
         }
@@ -619,7 +635,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
         /* And finally, decrypt the rest of the packet. */
         setup_sg(sg_in, ibuf + 1, isize - 1);
         setup_sg(sg_out, obuf + 1, osize - 1);
-        if (crypto_cipher_decrypt(state->arc4, sg_out, sg_in, isize - 1) != 0) {
+        if (crypto_blkcipher_decrypt(&desc, sg_out, sg_in, isize - 1)) {
                 printk(KERN_DEBUG "crypto_cypher_decrypt failed\n");
                 return DECOMP_ERROR;
         }
@@ -694,8 +710,8 @@ static struct compressor ppp_mppe = {
 static int __init ppp_mppe_init(void)
 {
         int answer;
-        if (!(crypto_alg_available("arc4", 0) &&
-              crypto_alg_available("sha1", 0)))
+        if (!(crypto_has_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC) &&
+              crypto_has_hash("sha1", 0, CRYPTO_ALG_ASYNC)))
                 return -ENODEV;
 
         sha_pad = kmalloc(sizeof(struct sha_pad), GFP_KERNEL);