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Message-Id: <20131206214958.767924895@linuxfoundation.org>
Date: Fri, 6 Dec 2013 13:52:31 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Tom Herbert <therbert@...gle.com>,
Eric Dumazet <eric.dumazet@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Shawn Landden <shawn@...rchofgit.com>
Subject: [PATCH 3.4 21/32] net: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shawn Landden <shawn@...rchofgit.com>
[ Upstream commit d3f7d56a7a4671d395e8af87071068a195257bf6 ]
Commit 35f9c09fe (tcp: tcp_sendpages() should call tcp_push() once)
added an internal flag MSG_SENDPAGE_NOTLAST, similar to
MSG_MORE.
algif_hash, algif_skcipher, and udp used MSG_MORE from tcp_sendpages()
and need to see the new flag as identical to MSG_MORE.
This fixes sendfile() on AF_ALG.
v3: also fix udp
Reported-and-tested-by: Shawn Landden <shawnlandden@...il.com>
Cc: Tom Herbert <therbert@...gle.com>
Cc: Eric Dumazet <eric.dumazet@...il.com>
Cc: David S. Miller <davem@...emloft.net>
Original-patch: Richard Weinberger <richard@....at>
Signed-off-by: Shawn Landden <shawn@...rchofgit.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
crypto/algif_hash.c | 3 +++
crypto/algif_skcipher.c | 3 +++
net/ipv4/udp.c | 3 +++
3 files changed, 9 insertions(+)
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -114,6 +114,9 @@ static ssize_t hash_sendpage(struct sock
struct hash_ctx *ctx = ask->private;
int err;
+ if (flags & MSG_SENDPAGE_NOTLAST)
+ flags |= MSG_MORE;
+
lock_sock(sk);
sg_init_table(ctx->sgl.sg, 1);
sg_set_page(ctx->sgl.sg, page, size, offset);
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -378,6 +378,9 @@ static ssize_t skcipher_sendpage(struct
struct skcipher_sg_list *sgl;
int err = -EINVAL;
+ if (flags & MSG_SENDPAGE_NOTLAST)
+ flags |= MSG_MORE;
+
lock_sock(sk);
if (!ctx->more && ctx->used)
goto unlock;
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1039,6 +1039,9 @@ int udp_sendpage(struct sock *sk, struct
struct udp_sock *up = udp_sk(sk);
int ret;
+ if (flags & MSG_SENDPAGE_NOTLAST)
+ flags |= MSG_MORE;
+
if (!up->pending) {
struct msghdr msg = { .msg_flags = flags|MSG_MORE };
--
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