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| author | David Howells <dhowells@redhat.com> | 2023-06-06 14:08:52 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-06-08 13:42:34 +0200 |
| commit | c1abe6f570aff4b6d396dc551e60570d2f50bd79 (patch) | |
| tree | 6ebe19d7b367fc188a31ed82de08b0a430d8402e /crypto/algif_hash.c | |
| parent | f9e7a5fa51fbb6fcb9c1c7e2c89dd7df9e7fe253 (diff) | |
| download | linux-c1abe6f570aff4b6d396dc551e60570d2f50bd79.tar.gz linux-c1abe6f570aff4b6d396dc551e60570d2f50bd79.tar.bz2 linux-c1abe6f570aff4b6d396dc551e60570d2f50bd79.zip | |
crypto: af_alg: Use extract_iter_to_sg() to create scatterlists
Use extract_iter_to_sg() to decant the destination iterator into a
scatterlist in af_alg_get_rsgl(). af_alg_make_sg() can then be removed.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'crypto/algif_hash.c')
| -rw-r--r-- | crypto/algif_hash.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c index 63af72e19fa8..16c69c4b9c62 100644 --- a/crypto/algif_hash.c +++ b/crypto/algif_hash.c @@ -91,13 +91,21 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg, if (len > limit) len = limit; - len = af_alg_make_sg(&ctx->sgl, &msg->msg_iter, len); + ctx->sgl.sgt.sgl = ctx->sgl.sgl; + ctx->sgl.sgt.nents = 0; + ctx->sgl.sgt.orig_nents = 0; + + len = extract_iter_to_sg(&msg->msg_iter, len, &ctx->sgl.sgt, + ALG_MAX_PAGES, 0); if (len < 0) { err = copied ? 0 : len; goto unlock; } + sg_mark_end(ctx->sgl.sgt.sgl + ctx->sgl.sgt.nents); + + ctx->sgl.need_unpin = iov_iter_extract_will_pin(&msg->msg_iter); - ahash_request_set_crypt(&ctx->req, ctx->sgl.sg, NULL, len); + ahash_request_set_crypt(&ctx->req, ctx->sgl.sgt.sgl, NULL, len); err = crypto_wait_req(crypto_ahash_update(&ctx->req), &ctx->wait); @@ -141,8 +149,8 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page, flags |= MSG_MORE; lock_sock(sk); - sg_init_table(ctx->sgl.sg, 1); - sg_set_page(ctx->sgl.sg, page, size, offset); + sg_init_table(ctx->sgl.sgl, 1); + sg_set_page(ctx->sgl.sgl, page, size, offset); if (!(flags & MSG_MORE)) { err = hash_alloc_result(sk, ctx); @@ -151,7 +159,7 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page, } else if (!ctx->more) hash_free_result(sk, ctx); - ahash_request_set_crypt(&ctx->req, ctx->sgl.sg, ctx->result, size); + ahash_request_set_crypt(&ctx->req, ctx->sgl.sgl, ctx->result, size); if (!(flags & MSG_MORE)) { if (ctx->more) |