1 #ifndef PTLRPC_GSS_CRYPTO_H
2 #define PTLRPC_GSS_CRYPTO_H
4 #include <linux/scatterlist.h>
6 #include "gss_internal.h"
8 #include <crypto/skcipher.h>
11 * linux v4.19-rc2-66-gb350bee5ea0f
12 * crypto: skcipher - Introduce crypto_sync_skcipher
14 * crypto_sync_skcipher will replace crypto_blkcipher so start using
15 * crypto_sync_skcipher and provide wrappers for older kernels
17 #ifdef SYNC_SKCIPHER_REQUEST_ON_STACK
19 #define crypto_skcipher_encrypt_iv(desc, dst, src, blocksize) \
20 crypto_skcipher_encrypt((desc))
22 #define crypto_skcipher_decrypt_iv(desc, dst, src, blocksize) \
23 crypto_skcipher_decrypt((desc))
25 #define skcipher_request_set_crypt_iv(d)
27 #else /* ! SYNC_SKCIPHER_REQUEST_ON_STACK */
29 #define crypto_sync_skcipher crypto_blkcipher
31 #define SYNC_SKCIPHER_REQUEST_ON_STACK(name, tfm) \
32 struct blkcipher_desc __##name##_obj, *name = (void *)&__##name##_obj
34 #define skcipher_request_set_sync_tfm(d, _tfm) \
35 do { (d)->tfm = _tfm; } while (0)
37 #define skcipher_request_set_callback(d, f, c, data) \
38 do { (d)->flags = f; } while (0)
40 #define skcipher_request_set_crypt(d, src, dst, cryptlen, iv) \
41 do { (d)->info = iv; } while (0)
43 #define skcipher_request_set_crypt_iv(d) \
44 do { (d)->info = crypto_blkcipher_crt((d)->tfm)->iv; } while (0)
46 #define crypto_sync_skcipher_blocksize(tfm) \
47 crypto_blkcipher_blocksize((tfm))
49 #define crypto_sync_skcipher_setkey(tfm, key, keylen) \
50 crypto_blkcipher_setkey((tfm), (key), (keylen))
52 #define crypto_alloc_sync_skcipher(name, type, mask) \
53 crypto_alloc_blkcipher((name), (type), (mask))
55 #define crypto_free_sync_skcipher(tfm) \
56 crypto_free_blkcipher((tfm))
58 #define crypto_sync_skcipher_ivsize(tfm) \
59 crypto_blkcipher_ivsize((tfm))
61 #define crypto_skcipher_encrypt_iv(desc, dst, src, len) \
62 crypto_blkcipher_encrypt_iv((desc), (dst), (src), (len))
64 #define crypto_skcipher_decrypt_iv(desc, dst, src, len) \
65 crypto_blkcipher_decrypt_iv((desc), (dst), (src), (len))
67 #define skcipher_request_zero(req) /* nop */
69 #endif /* SYNC_SKCIPHER_REQUEST_ON_STACK */
73 struct crypto_sync_skcipher *kb_tfm;
76 int gss_keyblock_init(struct gss_keyblock *kb, const char *alg_name,
78 void gss_keyblock_free(struct gss_keyblock *kb);
79 int gss_keyblock_dup(struct gss_keyblock *new, struct gss_keyblock *kb);
80 int gss_get_bytes(char **ptr, const char *end, void *res, size_t len);
81 int gss_get_rawobj(char **ptr, const char *end, rawobj_t *res);
82 int gss_get_keyblock(char **ptr, const char *end, struct gss_keyblock *kb,
84 int gss_setup_sgtable(struct sg_table *sgt, struct scatterlist *prealloc_sg,
85 const void *buf, unsigned int buf_len);
86 void gss_teardown_sgtable(struct sg_table *sgt);
87 int gss_crypt_generic(struct crypto_sync_skcipher *tfm, int decrypt,
88 const void *iv, const void *in, void *out, size_t length);
89 int gss_digest_hash(struct ahash_request *req, rawobj_t *hdr,
90 int msgcnt, rawobj_t *msgs, int iovcnt,
91 struct bio_vec *iovs);
92 int gss_digest_hash_compat(struct ahash_request *req,
93 rawobj_t *hdr, int msgcnt, rawobj_t *msgs,
94 int iovcnt, struct bio_vec *iovs);
95 int gss_add_padding(rawobj_t *msg, int msg_buflen, int blocksize);
96 int gss_crypt_rawobjs(struct crypto_sync_skcipher *tfm, __u8 *iv,
97 int inobj_cnt, rawobj_t *inobjs, rawobj_t *outobj,
100 #endif /* PTLRPC_GSS_CRYPTO_H */