diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/chacha20poly1305.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/crypto/chacha20poly1305.c b/crypto/chacha20poly1305.c index 246905bf00aa..96d842a13ffc 100644 --- a/crypto/chacha20poly1305.c +++ b/crypto/chacha20poly1305.c @@ -67,6 +67,8 @@ struct chachapoly_req_ctx { unsigned int cryptlen; /* Actual AD, excluding IV */ unsigned int assoclen; + /* request flags, with MAY_SLEEP cleared if needed */ + u32 flags; union { struct poly_req poly; struct chacha_req chacha; @@ -76,8 +78,12 @@ struct chachapoly_req_ctx { static inline void async_done_continue(struct aead_request *req, int err, int (*cont)(struct aead_request *)) { - if (!err) + if (!err) { + struct chachapoly_req_ctx *rctx = aead_request_ctx(req); + + rctx->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; err = cont(req); + } if (err != -EINPROGRESS && err != -EBUSY) aead_request_complete(req, err); @@ -144,7 +150,7 @@ static int chacha_decrypt(struct aead_request *req) dst = scatterwalk_ffwd(rctx->dst, req->dst, req->assoclen); } - skcipher_request_set_callback(&creq->req, aead_request_flags(req), + skcipher_request_set_callback(&creq->req, rctx->flags, chacha_decrypt_done, req); skcipher_request_set_tfm(&creq->req, ctx->chacha); skcipher_request_set_crypt(&creq->req, src, dst, @@ -188,7 +194,7 @@ static int poly_tail(struct aead_request *req) memcpy(&preq->tail.cryptlen, &len, sizeof(len)); sg_set_buf(preq->src, &preq->tail, sizeof(preq->tail)); - ahash_request_set_callback(&preq->req, aead_request_flags(req), + ahash_request_set_callback(&preq->req, rctx->flags, poly_tail_done, req); ahash_request_set_tfm(&preq->req, ctx->poly); ahash_request_set_crypt(&preq->req, preq->src, @@ -219,7 +225,7 @@ static int poly_cipherpad(struct aead_request *req) sg_init_table(preq->src, 1); sg_set_buf(preq->src, &preq->pad, padlen); - ahash_request_set_callback(&preq->req, aead_request_flags(req), + ahash_request_set_callback(&preq->req, rctx->flags, poly_cipherpad_done, req); ahash_request_set_tfm(&preq->req, ctx->poly); ahash_request_set_crypt(&preq->req, preq->src, NULL, padlen); @@ -250,7 +256,7 @@ static int poly_cipher(struct aead_request *req) sg_init_table(rctx->src, 2); crypt = scatterwalk_ffwd(rctx->src, crypt, req->assoclen); - ahash_request_set_callback(&preq->req, aead_request_flags(req), + ahash_request_set_callback(&preq->req, rctx->flags, poly_cipher_done, req); ahash_request_set_tfm(&preq->req, ctx->poly); ahash_request_set_crypt(&preq->req, crypt, NULL, rctx->cryptlen); @@ -280,7 +286,7 @@ static int poly_adpad(struct aead_request *req) sg_init_table(preq->src, 1); sg_set_buf(preq->src, preq->pad, padlen); - ahash_request_set_callback(&preq->req, aead_request_flags(req), + ahash_request_set_callback(&preq->req, rctx->flags, poly_adpad_done, req); ahash_request_set_tfm(&preq->req, ctx->poly); ahash_request_set_crypt(&preq->req, preq->src, NULL, padlen); @@ -304,7 +310,7 @@ static int poly_ad(struct aead_request *req) struct poly_req *preq = &rctx->u.poly; int err; - ahash_request_set_callback(&preq->req, aead_request_flags(req), + ahash_request_set_callback(&preq->req, rctx->flags, poly_ad_done, req); ahash_request_set_tfm(&preq->req, ctx->poly); ahash_request_set_crypt(&preq->req, req->src, NULL, rctx->assoclen); @@ -331,7 +337,7 @@ static int poly_setkey(struct aead_request *req) sg_init_table(preq->src, 1); sg_set_buf(preq->src, rctx->key, sizeof(rctx->key)); - ahash_request_set_callback(&preq->req, aead_request_flags(req), + ahash_request_set_callback(&preq->req, rctx->flags, poly_setkey_done, req); ahash_request_set_tfm(&preq->req, ctx->poly); ahash_request_set_crypt(&preq->req, preq->src, NULL, sizeof(rctx->key)); @@ -355,7 +361,7 @@ static int poly_init(struct aead_request *req) struct poly_req *preq = &rctx->u.poly; int err; - ahash_request_set_callback(&preq->req, aead_request_flags(req), + ahash_request_set_callback(&preq->req, rctx->flags, poly_init_done, req); ahash_request_set_tfm(&preq->req, ctx->poly); @@ -393,7 +399,7 @@ static int poly_genkey(struct aead_request *req) chacha_iv(creq->iv, req, 0); - skcipher_request_set_callback(&creq->req, aead_request_flags(req), + skcipher_request_set_callback(&creq->req, rctx->flags, poly_genkey_done, req); skcipher_request_set_tfm(&creq->req, ctx->chacha); skcipher_request_set_crypt(&creq->req, creq->src, creq->src, @@ -433,7 +439,7 @@ static int chacha_encrypt(struct aead_request *req) dst = scatterwalk_ffwd(rctx->dst, req->dst, req->assoclen); } - skcipher_request_set_callback(&creq->req, aead_request_flags(req), + skcipher_request_set_callback(&creq->req, rctx->flags, chacha_encrypt_done, req); skcipher_request_set_tfm(&creq->req, ctx->chacha); skcipher_request_set_crypt(&creq->req, src, dst, @@ -451,6 +457,7 @@ static int chachapoly_encrypt(struct aead_request *req) struct chachapoly_req_ctx *rctx = aead_request_ctx(req); rctx->cryptlen = req->cryptlen; + rctx->flags = aead_request_flags(req); /* encrypt call chain: * - chacha_encrypt/done() @@ -472,6 +479,7 @@ static int chachapoly_decrypt(struct aead_request *req) struct chachapoly_req_ctx *rctx = aead_request_ctx(req); rctx->cryptlen = req->cryptlen - POLY1305_DIGEST_SIZE; + rctx->flags = aead_request_flags(req); /* decrypt call chain: * - poly_genkey/done() |