This is a note to let you know that I have just added a patch titled
net: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST
to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue
This patch is scheduled to be released in version 3.8.13.15.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From cb2a1704467e5fce80115875401d75db456dde99 Mon Sep 17 00:00:00 2001
From: Shawn Landden <shawn@xxxxxxxxxxxxxxx>
Date: Sun, 24 Nov 2013 22:36:28 -0800
Subject: net: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST
[ 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
Cc: Tom Herbert <therbert@xxxxxxxxxx>
Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 3.4.x + 3.2.x
Reported-and-tested-by: Shawn Landden <shawnlandden@xxxxxxxxx>
Original-patch: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Shawn Landden <shawn@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
crypto/algif_hash.c | 3 +++
crypto/algif_skcipher.c | 3 +++
net/ipv4/udp.c | 3 +++
3 files changed, 9 insertions(+)
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index ef5356c..8502462 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -114,6 +114,9 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page,
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);
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 6a6dfc0..a19c027 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -378,6 +378,9 @@ static ssize_t skcipher_sendpage(struct socket *sock, struct page *page,
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;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index c8cf2f1..9de5641 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1045,6 +1045,9 @@ int udp_sendpage(struct sock *sk, struct page *page, int offset,
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 };
--
1.8.3.2
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