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espintcp: Inline do_tcp_sendpages()

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do_tcp_sendpages() is now just a small wrapper around tcp_sendmsg_locked(),
so inline it, allowing do_tcp_sendpages() to be removed.  This is part of
replacing ->sendpage() with a call to sendmsg() with MSG_SPLICE_PAGES set.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steffen Klassert <steffen.klassert@secunet.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: David Ahern <dsahern@kernel.org>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
David Howells 2023-05-22 13:11:16 +01:00 committed by Jakub Kicinski
parent ebf2e8860e
commit 7f8816ab4b
1 changed files with 7 additions and 3 deletions
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10
net/xfrm/espintcp.c
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@ -205,14 +205,16 @@ static int espintcp_sendskb_locked(struct sock *sk, struct espintcp_msg *emsg,
static int espintcp_sendskmsg_locked(struct sock *sk,
struct espintcp_msg *emsg, int flags)
{
struct msghdr msghdr = { .msg_flags = flags | MSG_SPLICE_PAGES, };
struct sk_msg *skmsg = &emsg->skmsg;
struct scatterlist *sg;
int done = 0;
int ret;
flags |= MSG_SENDPAGE_NOTLAST;
msghdr.msg_flags |= MSG_SENDPAGE_NOTLAST;
sg = &skmsg->sg.data[skmsg->sg.start];
do {
struct bio_vec bvec;
size_t size = sg->length - emsg->offset;
int offset = sg->offset + emsg->offset;
struct page *p;
@ -220,11 +222,13 @@ static int espintcp_sendskmsg_locked(struct sock *sk,
emsg->offset = 0;
if (sg_is_last(sg))
flags &= ~MSG_SENDPAGE_NOTLAST;
msghdr.msg_flags &= ~MSG_SENDPAGE_NOTLAST;
p = sg_page(sg);
retry:
ret = do_tcp_sendpages(sk, p, offset, size, flags);
bvec_set_page(&bvec, p, size, offset);
iov_iter_bvec(&msghdr.msg_iter, ITER_SOURCE, &bvec, 1, size);
ret = tcp_sendmsg_locked(sk, &msghdr, size);
if (ret < 0) {
emsg->offset = offset - sg->offset;
skmsg->sg.start += done;