From: Christoph Hellwig <hch@lst.de>
To: "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
Jakub Kicinski <kuba-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Eric Dumazet <edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Alexey Kuznetsov <kuznet-v/Mj1YrvjDBInbfyfbPRSQ@public.gmane.org>,
Hideaki YOSHIFUJI
<yoshfuji-VfPWfsRibaP+Ru+s062T9g@public.gmane.org>,
Jon Maloy <jmaloy-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Ying Xue <ying.xue-CWA4WttNNZF54TAoqtyWWQ@public.gmane.org>,
drbd-dev-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
target-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-afs-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cluster-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
ocfs2-devel-N0ozoZBvEnrZJqsBc5GL+g@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
ceph-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
rds-devel-N0ozoZBvEnrZJqsBc5GL+g@public.gmane.org,
linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
tipc-discussion-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: [Ocfs2-devel] [PATCH 15/28] tcp: add tcp_sock_set_keepidle
Date: Thu, 28 May 2020 07:12:23 +0200 [thread overview]
Message-ID: <20200528051236.620353-16-hch@lst.de> (raw)
In-Reply-To: <20200528051236.620353-1-hch@lst.de>
Add a helper to directly set the TCP_KEEP_IDLE sockopt from kernel
space without going through a fake uaccess.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
include/linux/tcp.h | 1 +
net/ipv4/tcp.c | 49 ++++++++++++++++++++++++++++++-------------
net/rds/tcp_listen.c | 5 +----
net/sunrpc/xprtsock.c | 3 +--
4 files changed, 37 insertions(+), 21 deletions(-)
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index de682143efe4d..5724dd84a85ed 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -498,6 +498,7 @@ int tcp_skb_shift(struct sk_buff *to, struct sk_buff *from, int pcount,
int shiftlen);
void tcp_sock_set_cork(struct sock *sk, bool on);
+int tcp_sock_set_keepidle(struct sock *sk, int val);
void tcp_sock_set_nodelay(struct sock *sk);
void tcp_sock_set_quickack(struct sock *sk, int val);
int tcp_sock_set_syncnt(struct sock *sk, int val);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 0004bd9ae7b0a..bdf0ff9333514 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2901,6 +2901,39 @@ void tcp_sock_set_user_timeout(struct sock *sk, u32 val)
}
EXPORT_SYMBOL(tcp_sock_set_user_timeout);
+static int __tcp_sock_set_keepidle(struct sock *sk, int val)
+{
+ struct tcp_sock *tp = tcp_sk(sk);
+
+ if (val < 1 || val > MAX_TCP_KEEPIDLE)
+ return -EINVAL;
+
+ tp->keepalive_time = val * HZ;
+ if (sock_flag(sk, SOCK_KEEPOPEN) &&
+ !((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN))) {
+ u32 elapsed = keepalive_time_elapsed(tp);
+
+ if (tp->keepalive_time > elapsed)
+ elapsed = tp->keepalive_time - elapsed;
+ else
+ elapsed = 0;
+ inet_csk_reset_keepalive_timer(sk, elapsed);
+ }
+
+ return 0;
+}
+
+int tcp_sock_set_keepidle(struct sock *sk, int val)
+{
+ int err;
+
+ lock_sock(sk);
+ err = __tcp_sock_set_keepidle(sk, val);
+ release_sock(sk);
+ return err;
+}
+EXPORT_SYMBOL(tcp_sock_set_keepidle);
+
/*
* Socket option code for TCP.
*/
@@ -3070,21 +3103,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
break;
case TCP_KEEPIDLE:
- if (val < 1 || val > MAX_TCP_KEEPIDLE)
- err = -EINVAL;
- else {
- tp->keepalive_time = val * HZ;
- if (sock_flag(sk, SOCK_KEEPOPEN) &&
- !((1 << sk->sk_state) &
- (TCPF_CLOSE | TCPF_LISTEN))) {
- u32 elapsed = keepalive_time_elapsed(tp);
- if (tp->keepalive_time > elapsed)
- elapsed = tp->keepalive_time - elapsed;
- else
- elapsed = 0;
- inet_csk_reset_keepalive_timer(sk, elapsed);
- }
- }
+ err = __tcp_sock_set_keepidle(sk, val);
break;
case TCP_KEEPINTVL:
if (val < 1 || val > MAX_TCP_KEEPINTVL)
diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c
index 6f90ea077adcd..79f9adc008114 100644
--- a/net/rds/tcp_listen.c
+++ b/net/rds/tcp_listen.c
@@ -52,10 +52,7 @@ int rds_tcp_keepalive(struct socket *sock)
if (ret < 0)
goto bail;
- ret = kernel_setsockopt(sock, IPPROTO_TCP, TCP_KEEPIDLE,
- (char *)&keepidle, sizeof(keepidle));
- if (ret < 0)
- goto bail;
+ tcp_sock_set_keepidle(sock->sk, keepidle);
/* KEEPINTVL is the interval between successive probes. We follow
* the model in xs_tcp_finish_connecting() and re-use keepidle.
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 231fd6162f68d..473290f7c5c0a 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2107,8 +2107,7 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt,
/* TCP Keepalive options */
sock_set_keepalive(sock->sk);
- kernel_setsockopt(sock, SOL_TCP, TCP_KEEPIDLE,
- (char *)&keepidle, sizeof(keepidle));
+ tcp_sock_set_keepidle(sock->sk, keepidle);
kernel_setsockopt(sock, SOL_TCP, TCP_KEEPINTVL,
(char *)&keepidle, sizeof(keepidle));
kernel_setsockopt(sock, SOL_TCP, TCP_KEEPCNT,
--
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 ` [Ocfs2-devel] [PATCH 12/28] tcp: add tcp_sock_set_quickack Christoph Hellwig
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 ` Christoph Hellwig [this message]
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=20200528051236.620353-16-hch@lst.de \
--to=hch@lst.de \
--cc=ceph-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=cluster-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org \
--cc=drbd-dev-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org \
--cc=edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
--cc=jmaloy-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=kuba-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=kuznet-v/Mj1YrvjDBInbfyfbPRSQ@public.gmane.org \
--cc=linux-afs-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=ocfs2-devel-N0ozoZBvEnrZJqsBc5GL+g@public.gmane.org \
--cc=rds-devel-N0ozoZBvEnrZJqsBc5GL+g@public.gmane.org \
--cc=target-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=tipc-discussion-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org \
--cc=ying.xue-CWA4WttNNZF54TAoqtyWWQ@public.gmane.org \
--cc=yoshfuji-VfPWfsRibaP+Ru+s062T9g@public.gmane.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).