From: Christoph Hellwig <hch@lst.de>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
Jon Maloy <jmaloy@redhat.com>, Ying Xue <ying.xue@windriver.com>,
drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, linux-nvme@lists.infradead.org,
target-devel@vger.kernel.org, linux-afs@lists.infradead.org,
linux-cifs@vger.kernel.org, cluster-devel@redhat.com,
ocfs2-devel@oss.oracle.com, netdev@vger.kernel.org,
ceph-devel@vger.kernel.org, rds-devel@oss.oracle.com,
linux-nfs@vger.kernel.org, tipc-discussion@lists.sourceforge.net
Subject: [Ocfs2-devel] [PATCH 12/28] tcp: add tcp_sock_set_quickack
Date: Thu, 28 May 2020 07:12:20 +0200 [thread overview]
Message-ID: <20200528051236.620353-13-hch@lst.de> (raw)
In-Reply-To: <20200528051236.620353-1-hch@lst.de>
Add a helper to directly set the TCP_QUICKACK sockopt from kernel space
without going through a fake uaccess. Cleanup the callers to avoid
pointless wrappers now that this is a simple function call.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/block/drbd/drbd_int.h | 7 ------
drivers/block/drbd/drbd_receiver.c | 5 ++--
include/linux/tcp.h | 1 +
net/ipv4/tcp.c | 39 ++++++++++++++++++++----------
4 files changed, 29 insertions(+), 23 deletions(-)
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index e24bba87c8e02..14345a87c7cc5 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1570,13 +1570,6 @@ extern void drbd_set_recv_tcq(struct drbd_device *device, int tcq_enabled);
extern void _drbd_clear_done_ee(struct drbd_device *device, struct list_head *to_be_freed);
extern int drbd_connected(struct drbd_peer_device *);
-static inline void drbd_tcp_quickack(struct socket *sock)
-{
- int val = 2;
- (void) kernel_setsockopt(sock, SOL_TCP, TCP_QUICKACK,
- (char*)&val, sizeof(val));
-}
-
/* sets the number of 512 byte sectors of our virtual device */
void drbd_set_my_capacity(struct drbd_device *device, sector_t size);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 20a5e94494acd..3a3f2b6a821f3 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1223,7 +1223,7 @@ static int drbd_recv_header_maybe_unplug(struct drbd_connection *connection, str
* quickly as possible, and let remote TCP know what we have
* received so far. */
if (err == -EAGAIN) {
- drbd_tcp_quickack(connection->data.socket);
+ tcp_sock_set_quickack(connection->data.socket->sk, 2);
drbd_unplug_all_devices(connection);
}
if (err > 0) {
@@ -4959,8 +4959,7 @@ static int receive_UnplugRemote(struct drbd_connection *connection, struct packe
{
/* Make sure we've acked all the TCP data associated
* with the data requests being unplugged */
- drbd_tcp_quickack(connection->data.socket);
-
+ tcp_sock_set_quickack(connection->data.socket->sk, 2);
return 0;
}
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 9e42c7fe50a8b..2eaf8320b9db0 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -499,5 +499,6 @@ int tcp_skb_shift(struct sk_buff *to, struct sk_buff *from, int pcount,
void tcp_sock_set_cork(struct sock *sk, bool on);
void tcp_sock_set_nodelay(struct sock *sk);
+void tcp_sock_set_quickack(struct sock *sk, int val);
#endif /* _LINUX_TCP_H */
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index a65f293a19fac..27b5e7a4e2ef9 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2856,6 +2856,31 @@ void tcp_sock_set_nodelay(struct sock *sk)
}
EXPORT_SYMBOL(tcp_sock_set_nodelay);
+static void __tcp_sock_set_quickack(struct sock *sk, int val)
+{
+ if (!val) {
+ inet_csk_enter_pingpong_mode(sk);
+ return;
+ }
+
+ inet_csk_exit_pingpong_mode(sk);
+ if ((1 << sk->sk_state) & (TCPF_ESTABLISHED | TCPF_CLOSE_WAIT) &&
+ inet_csk_ack_scheduled(sk)) {
+ inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_PUSHED;
+ tcp_cleanup_rbuf(sk, 1);
+ if (!(val & 1))
+ inet_csk_enter_pingpong_mode(sk);
+ }
+}
+
+void tcp_sock_set_quickack(struct sock *sk, int val)
+{
+ lock_sock(sk);
+ __tcp_sock_set_quickack(sk, val);
+ release_sock(sk);
+}
+EXPORT_SYMBOL(tcp_sock_set_quickack);
+
/*
* Socket option code for TCP.
*/
@@ -3096,19 +3121,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
break;
case TCP_QUICKACK:
- if (!val) {
- inet_csk_enter_pingpong_mode(sk);
- } else {
- inet_csk_exit_pingpong_mode(sk);
- if ((1 << sk->sk_state) &
- (TCPF_ESTABLISHED | TCPF_CLOSE_WAIT) &&
- inet_csk_ack_scheduled(sk)) {
- icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;
- tcp_cleanup_rbuf(sk, 1);
- if (!(val & 1))
- inet_csk_enter_pingpong_mode(sk);
- }
- }
+ __tcp_sock_set_quickack(sk, val);
break;
#ifdef CONFIG_TCP_MD5SIG
--
2.26.2
next prev parent reply other threads:[~2020-05-28 5:12 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-28 5:12 [Ocfs2-devel] remove most callers of kernel_setsockopt v3 Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 01/28] net: add sock_set_reuseaddr Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 02/28] net: add sock_no_linger Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 03/28] net: add sock_set_priority Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 04/28] net: add sock_set_sndtimeo Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 05/28] net: add sock_bindtoindex Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 06/28] net: add sock_enable_timestamps Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 07/28] net: add sock_set_keepalive Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 08/28] net: add sock_set_rcvbuf Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 09/28] net: add sock_set_reuseport Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 10/28] tcp: add tcp_sock_set_cork Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 11/28] tcp: add tcp_sock_set_nodelay Christoph Hellwig
2020-05-28 5:12 ` Christoph Hellwig [this message]
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 13/28] tcp: add tcp_sock_set_syncnt Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 14/28] tcp: add tcp_sock_set_user_timeout Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 15/28] tcp: add tcp_sock_set_keepidle Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 16/28] tcp: add tcp_sock_set_keepintvl Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 17/28] tcp: add tcp_sock_set_keepcnt Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 18/28] ipv4: add ip_sock_set_tos Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 19/28] ipv4: add ip_sock_set_freebind Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 20/28] ipv4: add ip_sock_set_recverr Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 21/28] ipv4: add ip_sock_set_mtu_discover Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 22/28] ipv4: add ip_sock_set_pktinfo Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 23/28] ipv6: add ip6_sock_set_v6only Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 24/28] ipv6: add ip6_sock_set_recverr Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 25/28] ipv6: add ip6_sock_set_addr_preferences Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 26/28] ipv6: add ip6_sock_set_recvpktinfo Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 27/28] rxrpc: add rxrpc_sock_set_min_security_level Christoph Hellwig
2020-05-28 5:12 ` [Ocfs2-devel] [PATCH 28/28] tipc: call tsk_set_importance from tipc_topsrv_create_listener Christoph Hellwig
2020-05-28 18:12 ` [Ocfs2-devel] remove most callers of kernel_setsockopt v3 David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200528051236.620353-13-hch@lst.de \
--to=hch@lst.de \
--cc=ceph-devel@vger.kernel.org \
--cc=cluster-devel@redhat.com \
--cc=davem@davemloft.net \
--cc=drbd-dev@lists.linbit.com \
--cc=edumazet@google.com \
--cc=jmaloy@redhat.com \
--cc=kuba@kernel.org \
--cc=kuznet@ms2.inr.ac.ru \
--cc=linux-afs@lists.infradead.org \
--cc=linux-cifs@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-nfs@vger.kernel.org \
--cc=linux-nvme@lists.infradead.org \
--cc=linux-rdma@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=ocfs2-devel@oss.oracle.com \
--cc=rds-devel@oss.oracle.com \
--cc=target-devel@vger.kernel.org \
--cc=tipc-discussion@lists.sourceforge.net \
--cc=ying.xue@windriver.com \
--cc=yoshfuji@linux-ipv6.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).