crypto: algif_aead - fix invalid sgl linking

This patch fixes it.
Also minor updates to comments.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c
index 00a6fe166fed52863e5b6249858adeee5690a394..69abada22373f54b5dd434ba514e9c6c80c180e5 100644 (file)
--- a/crypto/algif_aead.c
+++ b/crypto/algif_aead.c
@@ -33,7 +33,7 @@ struct aead_ctx {
        /*
         * RSGL_MAX_ENTRIES is an artificial limit where user space at maximum
         * can cause the kernel to allocate RSGL_MAX_ENTRIES * ALG_MAX_PAGES
-        * bytes
+        * pages
         */
 #define RSGL_MAX_ENTRIES ALG_MAX_PAGES
        struct af_alg_sgl rsgl[RSGL_MAX_ENTRIES];
@@ -435,11 +435,10 @@ static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored,
                if (err < 0)
                        goto unlock;
                usedpages += err;
-               /* chain the new scatterlist with initial list */
+               /* chain the new scatterlist with previous one */
                if (cnt)
-                       scatterwalk_crypto_chain(ctx->rsgl[0].sg,
-                                       ctx->rsgl[cnt].sg, 1,
-                                       sg_nents(ctx->rsgl[cnt-1].sg));
+                       af_alg_link_sg(&ctx->rsgl[cnt-1], &ctx->rsgl[cnt]);
+
                /* we do not need more iovecs as we have sufficient memory */
                if (outlen <= usedpages)
                        break;