Commit 0f477b65 authored by Tadeusz Struk's avatar Tadeusz Struk Committed by Herbert Xu

crypto: algif - Mark sgl end at the end of data

algif_skcipher sends 127 sgl buffers for encryption regardless of how
many buffers acctually have data to process, where the few first with
valid len and the rest with zero len. This is not very eficient.
This patch marks the last one with data as the last one to process.
Signed-off-by: default avatarTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 2d2ec064
...@@ -330,6 +330,7 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock, ...@@ -330,6 +330,7 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock,
sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list); sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list);
sg = sgl->sg; sg = sgl->sg;
sg_unmark_end(sg + sgl->cur);
do { do {
i = sgl->cur; i = sgl->cur;
plen = min_t(int, len, PAGE_SIZE); plen = min_t(int, len, PAGE_SIZE);
...@@ -355,6 +356,9 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock, ...@@ -355,6 +356,9 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock,
sgl->cur++; sgl->cur++;
} while (len && sgl->cur < MAX_SGL_ENTS); } while (len && sgl->cur < MAX_SGL_ENTS);
if (!size)
sg_mark_end(sg + sgl->cur - 1);
ctx->merge = plen & (PAGE_SIZE - 1); ctx->merge = plen & (PAGE_SIZE - 1);
} }
...@@ -401,6 +405,10 @@ static ssize_t skcipher_sendpage(struct socket *sock, struct page *page, ...@@ -401,6 +405,10 @@ static ssize_t skcipher_sendpage(struct socket *sock, struct page *page,
ctx->merge = 0; ctx->merge = 0;
sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list); sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list);
if (sgl->cur)
sg_unmark_end(sgl->sg + sgl->cur - 1);
sg_mark_end(sgl->sg + sgl->cur);
get_page(page); get_page(page);
sg_set_page(sgl->sg + sgl->cur, page, size, offset); sg_set_page(sgl->sg + sgl->cur, page, size, offset);
sgl->cur++; sgl->cur++;
......
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