net: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST

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@google.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org> # 3.4.x + 3.2.x
Reported-and-tested-by: Shawn Landden <shawnlandden@gmail.com>
Original-patch: Richard Weinberger <richard@nod.at>
Signed-off-by: Shawn Landden <shawn@churchofgit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index ef5356cd280a54c086e4f8ff964245e38748a391..850246206b1258a697f83e86c39acc9b0a17f973 100644 (file)
--- 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 6a6dfc062d2a47f04449fbb0e1c3f3852be337dc..a19c027b29bde504ac8eae4b4572947a69ed2335 100644 (file)
--- 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 44dfaa09b58400ee3def792f0d366caf8dfd4d9b..bf2b85b25491287f1f7f6517b8d2897dd1454ec1 100644 (file)
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1098,6 +1098,9 @@ 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 };