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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Willem de Bruijn , David Ahern , Matthew Wilcox , Al Viro , Christoph Hellwig , Jens Axboe , Jeff Layton , Christian Brauner , Chuck Lever III , Linus Torvalds , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, John Fastabend , Jakub Sitnicki , bpf@vger.kernel.org Subject: [PATCH net-next v6 09/18] tcp_bpf: Inline do_tcp_sendpages as it's now a wrapper around tcp_sendmsg Date: Tue, 11 Apr 2023 17:08:53 +0100 Message-Id: <20230411160902.4134381-10-dhowells@redhat.com> In-Reply-To: <20230411160902.4134381-1-dhowells@redhat.com> References: <20230411160902.4134381-1-dhowells@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 X-Rspam-User: X-Rspamd-Server: rspam03 X-Stat-Signature: cwbrg6kr15bkp9te6yiid8crtnq876e9 X-Rspamd-Queue-Id: 11A30120031 X-HE-Tag: 1681229382-768335 X-HE-Meta: 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 eJ3ueoI5 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: do_tcp_sendpages() is now just a small wrapper around tcp_sendmsg_locked(), so inline it. This is part of replacing ->sendpage() with a call to sendmsg() with MSG_SPLICE_PAGES set. Signed-off-by: David Howells cc: John Fastabend cc: Jakub Sitnicki cc: "David S. Miller" cc: Eric Dumazet cc: David Ahern cc: Jakub Kicinski cc: Paolo Abeni cc: Jens Axboe cc: Matthew Wilcox cc: netdev@vger.kernel.org cc: bpf@vger.kernel.org --- net/ipv4/tcp_bpf.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/net/ipv4/tcp_bpf.c b/net/ipv4/tcp_bpf.c index ebf917511937..24bfb885777e 100644 --- a/net/ipv4/tcp_bpf.c +++ b/net/ipv4/tcp_bpf.c @@ -72,11 +72,13 @@ static int tcp_bpf_push(struct sock *sk, struct sk_msg *msg, u32 apply_bytes, { bool apply = apply_bytes; struct scatterlist *sge; + struct msghdr msghdr = { .msg_flags = flags | MSG_SPLICE_PAGES, }; struct page *page; int size, ret = 0; u32 off; while (1) { + struct bio_vec bvec; bool has_tx_ulp; sge = sk_msg_elem(msg, msg->sg.start); @@ -88,16 +90,18 @@ static int tcp_bpf_push(struct sock *sk, struct sk_msg *msg, u32 apply_bytes, tcp_rate_check_app_limited(sk); retry: has_tx_ulp = tls_sw_has_ctx_tx(sk); - if (has_tx_ulp) { - flags |= MSG_SENDPAGE_NOPOLICY; - ret = kernel_sendpage_locked(sk, - page, off, size, flags); - } else { - ret = do_tcp_sendpages(sk, page, off, size, flags); - } + if (has_tx_ulp) + msghdr.msg_flags |= MSG_SENDPAGE_NOPOLICY; + if (flags & MSG_SENDPAGE_NOTLAST) + msghdr.msg_flags |= MSG_MORE; + + bvec_set_page(&bvec, page, size, off); + iov_iter_bvec(&msghdr.msg_iter, ITER_SOURCE, &bvec, 1, size); + ret = tcp_sendmsg_locked(sk, &msghdr, size); if (ret <= 0) return ret; + if (apply) apply_bytes -= ret; msg->sg.size -= ret; @@ -404,7 +408,7 @@ static int tcp_bpf_sendmsg(struct sock *sk, struct msghdr *msg, size_t size) long timeo; int flags; - /* Don't let internal do_tcp_sendpages() flags through */ + /* Don't let internal sendpage flags through */ flags = (msg->msg_flags & ~MSG_SENDPAGE_DECRYPTED); flags |= MSG_NO_SHARED_FRAGS;