2023-05-15 09:44:47

by David Howells

[permalink] [raw]
Subject: [PATCH net-next v7 10/16] tcp: Fold do_tcp_sendpages() into tcp_sendpage_locked()

Fold do_tcp_sendpages() into its last remaining caller,
tcp_sendpage_locked().

Signed-off-by: David Howells <[email protected]>
cc: Eric Dumazet <[email protected]>
cc: David Ahern <[email protected]>
cc: "David S. Miller" <[email protected]>
cc: Jakub Kicinski <[email protected]>
cc: Paolo Abeni <[email protected]>
cc: Jens Axboe <[email protected]>
cc: Matthew Wilcox <[email protected]>
cc: [email protected]
---
include/net/tcp.h | 2 --
net/ipv4/tcp.c | 21 +++++++--------------
2 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 04a31643cda3..02a6cff1827e 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -333,8 +333,6 @@ int tcp_sendpage(struct sock *sk, struct page *page, int offset, size_t size,
int flags);
int tcp_sendpage_locked(struct sock *sk, struct page *page, int offset,
size_t size, int flags);
-ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset,
- size_t size, int flags);
int tcp_send_mss(struct sock *sk, int *size_goal, int flags);
void tcp_push(struct sock *sk, int flags, int mss_now, int nonagle,
int size_goal);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 28231e503af9..5e4752131583 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -974,12 +974,17 @@ static int tcp_wmem_schedule(struct sock *sk, int copy)
return min(copy, sk->sk_forward_alloc);
}

-ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset,
- size_t size, int flags)
+int tcp_sendpage_locked(struct sock *sk, struct page *page, int offset,
+ size_t size, int flags)
{
struct bio_vec bvec;
struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };

+ if (!(sk->sk_route_caps & NETIF_F_SG))
+ return sock_no_sendpage_locked(sk, page, offset, size, flags);
+
+ tcp_rate_check_app_limited(sk); /* is sending application-limited? */
+
bvec_set_page(&bvec, page, size, offset);
iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);

@@ -988,18 +993,6 @@ ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset,

return tcp_sendmsg_locked(sk, &msg, size);
}
-EXPORT_SYMBOL_GPL(do_tcp_sendpages);
-
-int tcp_sendpage_locked(struct sock *sk, struct page *page, int offset,
- size_t size, int flags)
-{
- if (!(sk->sk_route_caps & NETIF_F_SG))
- return sock_no_sendpage_locked(sk, page, offset, size, flags);
-
- tcp_rate_check_app_limited(sk); /* is sending application-limited? */
-
- return do_tcp_sendpages(sk, page, offset, size, flags);
-}
EXPORT_SYMBOL_GPL(tcp_sendpage_locked);

int tcp_sendpage(struct sock *sk, struct page *page, int offset,