diff options
Diffstat (limited to 'crypto/af_alg.c')
| -rw-r--r-- | crypto/af_alg.c | 73 |
1 files changed, 25 insertions, 48 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index 0111d0754593..3c3cb965fd74 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -977,7 +977,7 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size, ssize_t plen; /* use the existing memory in an allocated page */ - if (ctx->merge && !(msg->msg_flags & MSG_SPLICE_PAGES)) { + if (ctx->merge) { sgl = list_entry(ctx->tsgl_list.prev, struct af_alg_tsgl, list); sg = sgl->sg + sgl->cur - 1; @@ -1021,60 +1021,37 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size, if (sgl->cur) sg_unmark_end(sg + sgl->cur - 1); - if (msg->msg_flags & MSG_SPLICE_PAGES) { - struct sg_table sgtable = { - .sgl = sg, - .nents = sgl->cur, - .orig_nents = sgl->cur, - }; - - plen = extract_iter_to_sg(&msg->msg_iter, len, &sgtable, - MAX_SGL_ENTS - sgl->cur, 0); - if (plen < 0) { - err = plen; + do { + struct page *pg; + unsigned int i = sgl->cur; + + plen = min_t(size_t, len, PAGE_SIZE); + + pg = alloc_page(GFP_KERNEL); + if (!pg) { + err = -ENOMEM; goto unlock; } - for (; sgl->cur < sgtable.nents; sgl->cur++) - get_page(sg_page(&sg[sgl->cur])); + sg_assign_page(sg + i, pg); + + err = memcpy_from_msg(page_address(sg_page(sg + i)), + msg, plen); + if (err) { + __free_page(sg_page(sg + i)); + sg_assign_page(sg + i, NULL); + goto unlock; + } + + sg[i].length = plen; len -= plen; ctx->used += plen; copied += plen; size -= plen; - } else { - do { - struct page *pg; - unsigned int i = sgl->cur; - - plen = min_t(size_t, len, PAGE_SIZE); - - pg = alloc_page(GFP_KERNEL); - if (!pg) { - err = -ENOMEM; - goto unlock; - } - - sg_assign_page(sg + i, pg); - - err = memcpy_from_msg( - page_address(sg_page(sg + i)), - msg, plen); - if (err) { - __free_page(sg_page(sg + i)); - sg_assign_page(sg + i, NULL); - goto unlock; - } - - sg[i].length = plen; - len -= plen; - ctx->used += plen; - copied += plen; - size -= plen; - sgl->cur++; - } while (len && sgl->cur < MAX_SGL_ENTS); - - ctx->merge = plen & (PAGE_SIZE - 1); - } + sgl->cur++; + } while (len && sgl->cur < MAX_SGL_ENTS); + + ctx->merge = plen & (PAGE_SIZE - 1); if (!size) sg_mark_end(sg + sgl->cur - 1); |
