3.5.7.28 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Shawn Landden <shawn@xxxxxxxxxxxxxxx>
commit d3f7d56a7a4671d395e8af87071068a195257bf6 upstream.
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>
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: Luis Henriques <luis.henriques@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 de3033a..fb9ebe9 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1040,6 +1040,9 @@ 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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