[3.16.y-ckt stable] Patch "crypto: algif_skcipher - Remove custom release parent function" has been added to the 3.16.y-ckt tree

Luis Henriques luis.henriques at canonical.com
Thu Feb 25 18:32:26 UTC 2016


This is a note to let you know that I have just added a patch titled

    crypto: algif_skcipher - Remove custom release parent function

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt25.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

---8<------------------------------------------------------------

>From 2643fc0d9d22061faae513130f45fb5b0d9478e3 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert at gondor.apana.org.au>
Date: Wed, 13 Jan 2016 15:01:06 +0800
Subject: crypto: algif_skcipher - Remove custom release parent function

commit d7b65aee1e7b4c87922b0232eaba56a8a143a4a0 upstream.

This patch removes the custom release parent function as the
generic af_alg_release_parent now works for nokey sockets too.

Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 crypto/algif_skcipher.c | 43 +++----------------------------------------
 1 file changed, 3 insertions(+), 40 deletions(-)

diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 584d70f7f824..de514c5d4503 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -681,7 +681,7 @@ static int skcipher_setkey(void *private, const u8 *key, unsigned int keylen)
 	return err;
 }

-static void skcipher_sock_destruct_common(struct sock *sk)
+static void skcipher_sock_destruct(struct sock *sk)
 {
 	struct alg_sock *ask = alg_sk(sk);
 	struct skcipher_ctx *ctx = ask->private;
@@ -690,33 +690,10 @@ static void skcipher_sock_destruct_common(struct sock *sk)
 	skcipher_free_sgl(sk);
 	sock_kfree_s(sk, ctx->iv, crypto_ablkcipher_ivsize(tfm));
 	sock_kfree_s(sk, ctx, ctx->len);
-}
-
-static void skcipher_sock_destruct(struct sock *sk)
-{
-	skcipher_sock_destruct_common(sk);
-	af_alg_release_parent(sk);
-}
-
-static void skcipher_release_parent_nokey(struct sock *sk)
-{
-	struct alg_sock *ask = alg_sk(sk);
-
-	if (!ask->refcnt) {
-		sock_put(ask->parent);
-		return;
-	}
-
 	af_alg_release_parent(sk);
 }

-static void skcipher_sock_destruct_nokey(struct sock *sk)
-{
-	skcipher_sock_destruct_common(sk);
-	skcipher_release_parent_nokey(sk);
-}
-
-static int skcipher_accept_parent_common(void *private, struct sock *sk)
+static int skcipher_accept_parent_nokey(void *private, struct sock *sk)
 {
 	struct skcipher_ctx *ctx;
 	struct alg_sock *ask = alg_sk(sk);
@@ -763,21 +740,7 @@ static int skcipher_accept_parent(void *private, struct sock *sk)
 	if (!tfm->has_key && crypto_ablkcipher_has_setkey(tfm->skcipher))
 		return -ENOKEY;

-	return skcipher_accept_parent_common(private, sk);
-}
-
-static int skcipher_accept_parent_nokey(void *private, struct sock *sk)
-{
-	int err;
-
-	err = skcipher_accept_parent_common(private, sk);
-	if (err)
-		goto out;
-
-	sk->sk_destruct = skcipher_sock_destruct_nokey;
-
-out:
-	return err;
+	return skcipher_accept_parent_nokey(private, sk);
 }

 static const struct af_alg_type algif_type_skcipher = {




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