Messages in this thread Patch in this message | | | From | David Howells <> | Subject | [PATCH v3 13/55] siw: Inline do_tcp_sendpages() | Date | Fri, 31 Mar 2023 17:08:32 +0100 |
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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: Bernard Metzler <bmt@zurich.ibm.com> cc: Tom Talpey <tom@talpey.com> cc: "David S. Miller" <davem@davemloft.net> cc: Eric Dumazet <edumazet@google.com> cc: Jakub Kicinski <kuba@kernel.org> cc: Paolo Abeni <pabeni@redhat.com> cc: Jens Axboe <axboe@kernel.dk> cc: Matthew Wilcox <willy@infradead.org> cc: linux-rdma@vger.kernel.org cc: netdev@vger.kernel.org --- drivers/infiniband/sw/siw/siw_qp_tx.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/sw/siw/siw_qp_tx.c b/drivers/infiniband/sw/siw/siw_qp_tx.c index 05052b49107f..fa5de40d85d5 100644 --- a/drivers/infiniband/sw/siw/siw_qp_tx.c +++ b/drivers/infiniband/sw/siw/siw_qp_tx.c @@ -313,7 +313,7 @@ static int siw_tx_ctrl(struct siw_iwarp_tx *c_tx, struct socket *s, } /* - * 0copy TCP transmit interface: Use do_tcp_sendpages. + * 0copy TCP transmit interface: Use MSG_SPLICE_PAGES. * * Using sendpage to push page by page appears to be less efficient * than using sendmsg, even if data are copied. @@ -324,20 +324,27 @@ static int siw_tx_ctrl(struct siw_iwarp_tx *c_tx, struct socket *s, static int siw_tcp_sendpages(struct socket *s, struct page **page, int offset, size_t size) { + struct bio_vec bvec; + struct msghdr msg = { + .msg_flags = (MSG_MORE | MSG_DONTWAIT | MSG_SENDPAGE_NOTLAST | + MSG_SPLICE_PAGES), + }; struct sock *sk = s->sk; - int i = 0, rv = 0, sent = 0, - flags = MSG_MORE | MSG_DONTWAIT | MSG_SENDPAGE_NOTLAST; + int i = 0, rv = 0, sent = 0; while (size) { size_t bytes = min_t(size_t, PAGE_SIZE - offset, size); if (size + offset <= PAGE_SIZE) - flags = MSG_MORE | MSG_DONTWAIT; + msg.msg_flags = MSG_MORE | MSG_DONTWAIT; tcp_rate_check_app_limited(sk); + bvec_set_page(&bvec, page[i], bytes, offset); + iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size); + try_page_again: lock_sock(sk); - rv = do_tcp_sendpages(sk, page[i], offset, bytes, flags); + rv = tcp_sendmsg_locked(sk, &msg, size); release_sock(sk); if (rv > 0) {
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