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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-08 20:57:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-08 20:57:08 -0700
commit4d2fa8b44b891f0da5ceda3e5a1402ccf0ab6f26 (patch)
treecbb763ec5e74cfbaac6ce53df277883cb78a8a1a /crypto/chacha20poly1305.c
parent8b68150883ca466a23e90902dd4113b22e692f04 (diff)
parentf3880a23564e3172437285ebcb5b8a124539fdae (diff)
downloadlinux-4d2fa8b44b891f0da5ceda3e5a1402ccf0ab6f26.tar.bz2
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu: "Here is the crypto update for 5.3: API: - Test shash interface directly in testmgr - cra_driver_name is now mandatory Algorithms: - Replace arc4 crypto_cipher with library helper - Implement 5 way interleave for ECB, CBC and CTR on arm64 - Add xxhash - Add continuous self-test on noise source to drbg - Update jitter RNG Drivers: - Add support for SHA204A random number generator - Add support for 7211 in iproc-rng200 - Fix fuzz test failures in inside-secure - Fix fuzz test failures in talitos - Fix fuzz test failures in qat" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (143 commits) crypto: stm32/hash - remove interruptible condition for dma crypto: stm32/hash - Fix hmac issue more than 256 bytes crypto: stm32/crc32 - rename driver file crypto: amcc - remove memset after dma_alloc_coherent crypto: ccp - Switch to SPDX license identifiers crypto: ccp - Validate the the error value used to index error messages crypto: doc - Fix formatting of new crypto engine content crypto: doc - Add parameter documentation crypto: arm64/aes-ce - implement 5 way interleave for ECB, CBC and CTR crypto: arm64/aes-ce - add 5 way interleave routines crypto: talitos - drop icv_ool crypto: talitos - fix hash on SEC1. crypto: talitos - move struct talitos_edesc into talitos.h lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE crypto/NX: Set receive window credits to max number of CRBs in RxFIFO crypto: asymmetric_keys - select CRYPTO_HASH where needed crypto: serpent - mark __serpent_setkey_sbox noinline crypto: testmgr - dynamically allocate crypto_shash crypto: testmgr - dynamically allocate testvec_config crypto: talitos - eliminate unneeded 'done' functions at build time ...
Diffstat (limited to 'crypto/chacha20poly1305.c')
-rw-r--r--crypto/chacha20poly1305.c73
1 files changed, 32 insertions, 41 deletions
diff --git a/crypto/chacha20poly1305.c b/crypto/chacha20poly1305.c
index 2db7eac4bf3b..74e824e537e6 100644
--- a/crypto/chacha20poly1305.c
+++ b/crypto/chacha20poly1305.c
@@ -61,6 +61,8 @@ 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;
@@ -70,8 +72,12 @@ 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);
@@ -129,16 +135,12 @@ static int chacha_decrypt(struct aead_request *req)
chacha_iv(creq->iv, req, 1);
- sg_init_table(rctx->src, 2);
src = scatterwalk_ffwd(rctx->src, req->src, req->assoclen);
dst = src;
-
- if (req->src != req->dst) {
- sg_init_table(rctx->dst, 2);
+ if (req->src != req->dst)
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,
@@ -172,17 +174,13 @@ static int poly_tail(struct aead_request *req)
struct chachapoly_ctx *ctx = crypto_aead_ctx(tfm);
struct chachapoly_req_ctx *rctx = aead_request_ctx(req);
struct poly_req *preq = &rctx->u.poly;
- __le64 len;
int err;
- sg_init_table(preq->src, 1);
- len = cpu_to_le64(rctx->assoclen);
- memcpy(&preq->tail.assoclen, &len, sizeof(len));
- len = cpu_to_le64(rctx->cryptlen);
- memcpy(&preq->tail.cryptlen, &len, sizeof(len));
- sg_set_buf(preq->src, &preq->tail, sizeof(preq->tail));
+ preq->tail.assoclen = cpu_to_le64(rctx->assoclen);
+ preq->tail.cryptlen = cpu_to_le64(rctx->cryptlen);
+ sg_init_one(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,
@@ -205,15 +203,14 @@ static int poly_cipherpad(struct aead_request *req)
struct chachapoly_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
struct chachapoly_req_ctx *rctx = aead_request_ctx(req);
struct poly_req *preq = &rctx->u.poly;
- unsigned int padlen, bs = POLY1305_BLOCK_SIZE;
+ unsigned int padlen;
int err;
- padlen = (bs - (rctx->cryptlen % bs)) % bs;
+ padlen = -rctx->cryptlen % POLY1305_BLOCK_SIZE;
memset(preq->pad, 0, sizeof(preq->pad));
- sg_init_table(preq->src, 1);
- sg_set_buf(preq->src, &preq->pad, padlen);
+ sg_init_one(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);
@@ -241,10 +238,9 @@ static int poly_cipher(struct aead_request *req)
if (rctx->cryptlen == req->cryptlen) /* encrypting */
crypt = req->dst;
- 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);
@@ -266,15 +262,14 @@ static int poly_adpad(struct aead_request *req)
struct chachapoly_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
struct chachapoly_req_ctx *rctx = aead_request_ctx(req);
struct poly_req *preq = &rctx->u.poly;
- unsigned int padlen, bs = POLY1305_BLOCK_SIZE;
+ unsigned int padlen;
int err;
- padlen = (bs - (rctx->assoclen % bs)) % bs;
+ padlen = -rctx->assoclen % POLY1305_BLOCK_SIZE;
memset(preq->pad, 0, sizeof(preq->pad));
- sg_init_table(preq->src, 1);
- sg_set_buf(preq->src, preq->pad, padlen);
+ sg_init_one(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);
@@ -298,7 +293,7 @@ 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);
@@ -322,10 +317,9 @@ static int poly_setkey(struct aead_request *req)
struct poly_req *preq = &rctx->u.poly;
int err;
- sg_init_table(preq->src, 1);
- sg_set_buf(preq->src, rctx->key, sizeof(rctx->key));
+ sg_init_one(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));
@@ -349,7 +343,7 @@ 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);
@@ -381,13 +375,12 @@ static int poly_genkey(struct aead_request *req)
rctx->assoclen -= 8;
}
- sg_init_table(creq->src, 1);
memset(rctx->key, 0, sizeof(rctx->key));
- sg_set_buf(creq->src, rctx->key, sizeof(rctx->key));
+ sg_init_one(creq->src, rctx->key, sizeof(rctx->key));
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,
@@ -418,16 +411,12 @@ static int chacha_encrypt(struct aead_request *req)
chacha_iv(creq->iv, req, 1);
- sg_init_table(rctx->src, 2);
src = scatterwalk_ffwd(rctx->src, req->src, req->assoclen);
dst = src;
-
- if (req->src != req->dst) {
- sg_init_table(rctx->dst, 2);
+ if (req->src != req->dst)
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,
@@ -445,6 +434,7 @@ 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()
@@ -466,6 +456,7 @@ 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()