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authorChristian Lamparter <chunkeey@gmail.com>2017-10-04 01:00:11 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2017-10-12 22:55:15 +0800
commitcd4dcd6da7a2610e0562a6e130bb68cc544a8fb1 (patch)
treea7305d6dcc158067b37f5427aab044e3f8cf2171 /drivers/crypto/amcc/crypto4xx_core.h
parent4865b122d4aff5151c88d2f7442d5a87f7e795ae (diff)
downloadlinux-cd4dcd6da7a2610e0562a6e130bb68cc544a8fb1.tar.gz
crypto: crypto4xx - overhaul crypto4xx_build_pd()
This patch overhauls and fixes code related to crypto4xx_build_pd() * crypto4xx_build_pd() did not handle chained source scatterlist. This is fixed by replacing the buggy indexed-access of &src[idx] with sg_next() in the gather array setup loop. * The redundant is_hash, direction, save_iv and pd_ctl members in the crypto4xx_ctx struct have been removed. - is_hash can be derived from the crypto_async_request parameter. - direction is already part of the security association's bf.dir bitfield. - save_iv is unused. - pd_ctl always had the host_ready bit enabled anyway. (the hash_final case is rather pointless, since the ahash code has been deactivated). * make crypto4xx_build_pd()'s caller responsible for converting the IV to the LE32 format. * change crypto4xx_ahash_update() and crypto4xx_ahash_digest() to initialize a temporary destination scatterlist. This allows the removal of an ugly cast of req->result (which is a pointer to an u8-array) to a scatterlist pointer. * change crypto4xx_build_pd() return type to int. After all it returns -EINPROGRESS/-EBUSY. * fix crypto4xx_build_pd() thread-unsafe sa handling. Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/amcc/crypto4xx_core.h')
-rw-r--r--drivers/crypto/amcc/crypto4xx_core.h12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_core.h b/drivers/crypto/amcc/crypto4xx_core.h
index 2df6874edee1..b1d634b0f44f 100644
--- a/drivers/crypto/amcc/crypto4xx_core.h
+++ b/drivers/crypto/amcc/crypto4xx_core.h
@@ -71,7 +71,6 @@ struct pd_uinfo {
u32 num_sd; /* number of scatter discriptors
used by this packet */
struct dynamic_sa_ctl *sa_va; /* shadow sa */
- u32 sa_pa;
struct sa_state_record *sr_va; /* state record for shadow sa */
u32 sr_pa;
struct scatterlist *dest_va;
@@ -129,11 +128,6 @@ struct crypto4xx_ctx {
struct sa_state_record *state_record;
dma_addr_t state_record_dma_addr;
u32 sa_len;
- u32 offset_to_sr_ptr; /* offset to state ptr, in dynamic sa */
- u32 direction;
- u32 save_iv;
- u32 pd_ctl;
- u32 is_hash;
};
struct crypto4xx_alg_common {
@@ -170,8 +164,10 @@ int crypto4xx_build_pd(struct crypto_async_request *req,
struct crypto4xx_ctx *ctx,
struct scatterlist *src,
struct scatterlist *dst,
- unsigned int datalen,
- void *iv, u32 iv_len);
+ const unsigned int datalen,
+ const __le32 *iv, const u32 iv_len,
+ const struct dynamic_sa_ctl *sa,
+ const unsigned int sa_len);
int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher,
const u8 *key, unsigned int keylen);
int crypto4xx_setkey_aes_cfb(struct crypto_ablkcipher *cipher,