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net: inline skb_zerocopy_iter_dgram 

skb_zerocopy_iter_dgram() is a small proxy function, inline it. For
that, move __zerocopy_sg_from_iter into linux/skbuff.h

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Begunkov 2022-04-28 11:58:45 +01:00 committed by David S. Miller
parent de32bc6aad
commit 657dd5f97b
4 changed files with 22 additions and 38 deletions
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36
include/linux/skbuff.h
View File

@ -684,20 +684,6 @@ struct ubuf_info {
int mm_account_pinned_pages(struct mmpin *mmp, size_t size);
void mm_unaccount_pinned_pages(struct mmpin *mmp);
struct ubuf_info *msg_zerocopy_alloc(struct sock *sk, size_t size);
struct ubuf_info *msg_zerocopy_realloc(struct sock *sk, size_t size,
struct ubuf_info *uarg);
void msg_zerocopy_put_abort(struct ubuf_info *uarg, bool have_uref);
void msg_zerocopy_callback(struct sk_buff *skb, struct ubuf_info *uarg,
bool success);
int skb_zerocopy_iter_dgram(struct sk_buff *skb, struct msghdr *msg, int len);
int skb_zerocopy_iter_stream(struct sock *sk, struct sk_buff *skb,
struct msghdr *msg, int len,
struct ubuf_info *uarg);
/* This data is invariant across clones and lives at
* the end of the header data, ie. at skb->end.
*/
@ -1679,6 +1665,28 @@ static inline void skb_set_end_offset(struct sk_buff *skb, unsigned int offset)
}
#endif
struct ubuf_info *msg_zerocopy_alloc(struct sock *sk, size_t size);
struct ubuf_info *msg_zerocopy_realloc(struct sock *sk, size_t size,
struct ubuf_info *uarg);
void msg_zerocopy_put_abort(struct ubuf_info *uarg, bool have_uref);
void msg_zerocopy_callback(struct sk_buff *skb, struct ubuf_info *uarg,
bool success);
int __zerocopy_sg_from_iter(struct sock *sk, struct sk_buff *skb,
struct iov_iter *from, size_t length);
static inline int skb_zerocopy_iter_dgram(struct sk_buff *skb,
struct msghdr *msg, int len)
{
return __zerocopy_sg_from_iter(skb->sk, skb, &msg->msg_iter, len);
}
int skb_zerocopy_iter_stream(struct sock *sk, struct sk_buff *skb,
struct msghdr *msg, int len,
struct ubuf_info *uarg);
/* Internal */
#define skb_shinfo(SKB) ((struct skb_shared_info *)(skb_end_pointer(SKB)))

2
net/core/datagram.c
View File

@ -62,8 +62,6 @@
#include <trace/events/skb.h>
#include <net/busy_poll.h>
#include "datagram.h"
/*
* Is a socket 'connection oriented' ?
*/

15
net/core/datagram.h
View File

@ -1,15 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NET_CORE_DATAGRAM_H_
#define _NET_CORE_DATAGRAM_H_
#include <linux/types.h>
struct sock;
struct sk_buff;
struct iov_iter;
int __zerocopy_sg_from_iter(struct sock *sk, struct sk_buff *skb,
struct iov_iter *from, size_t length);
#endif /* _NET_CORE_DATAGRAM_H_ */

7
net/core/skbuff.c
View File

@ -80,7 +80,6 @@
#include <linux/user_namespace.h>
#include <linux/indirect_call_wrapper.h>
#include "datagram.h"
#include "sock_destructor.h"
struct kmem_cache *skbuff_head_cache __ro_after_init;
@ -1340,12 +1339,6 @@ void msg_zerocopy_put_abort(struct ubuf_info *uarg, bool have_uref)
}
EXPORT_SYMBOL_GPL(msg_zerocopy_put_abort);
int skb_zerocopy_iter_dgram(struct sk_buff *skb, struct msghdr *msg, int len)
{
return __zerocopy_sg_from_iter(skb->sk, skb, &msg->msg_iter, len);
}
EXPORT_SYMBOL_GPL(skb_zerocopy_iter_dgram);
int skb_zerocopy_iter_stream(struct sock *sk, struct sk_buff *skb,
struct msghdr *msg, int len,
struct ubuf_info *uarg)