[TCP]: Splice receive support.
Support for network splice receive.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/net.h b/include/linux/net.h
index 596131e..0235d91 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -22,6 +22,7 @@
#include <asm/socket.h>
struct poll_table_struct;
+struct pipe_inode_info;
struct inode;
struct net;
@@ -172,6 +173,8 @@
struct vm_area_struct * vma);
ssize_t (*sendpage) (struct socket *sock, struct page *page,
int offset, size_t size, int flags);
+ ssize_t (*splice_read)(struct socket *sock, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len, unsigned int flags);
};
struct net_proto_family {
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index bddd50b..d39f53e 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -95,6 +95,7 @@
struct net_device;
struct scatterlist;
+struct pipe_inode_info;
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
struct nf_conntrack {
@@ -1559,6 +1560,11 @@
extern __wsum skb_copy_and_csum_bits(const struct sk_buff *skb,
int offset, u8 *to, int len,
__wsum csum);
+extern int skb_splice_bits(struct sk_buff *skb,
+ unsigned int offset,
+ struct pipe_inode_info *pipe,
+ unsigned int len,
+ unsigned int flags);
extern void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to);
extern void skb_split(struct sk_buff *skb,
struct sk_buff *skb1, const u32 len);
diff --git a/include/net/tcp.h b/include/net/tcp.h
index cb5b033..d893b44 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -309,6 +309,9 @@
extern void tcp_twsk_destructor(struct sock *sk);
+extern ssize_t tcp_splice_read(struct socket *sk, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len, unsigned int flags);
+
static inline void tcp_dec_quickack_mode(struct sock *sk,
const unsigned int pkts)
{