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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 09/28] net: add sock_set_reuseport
Date: Thu, 28 May 2020 07:12:17 +0200	[thread overview]
Message-ID: <20200528051236.620353-10-hch@lst.de> (raw)
In-Reply-To: <20200528051236.620353-1-hch@lst.de>

Add a helper to directly set the SO_REUSEPORT sockopt from kernel space
without going through a fake uaccess.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/net/sock.h    |  1 +
 net/core/sock.c       |  8 ++++++++
 net/sunrpc/xprtsock.c | 17 +----------------
 3 files changed, 10 insertions(+), 16 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index c997289aabbf9..d994daa418ec2 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2695,6 +2695,7 @@ void sock_set_keepalive(struct sock *sk);
 void sock_set_priority(struct sock *sk, u32 priority);
 void sock_set_rcvbuf(struct sock *sk, int val);
 void sock_set_reuseaddr(struct sock *sk);
+void sock_set_reuseport(struct sock *sk);
 void sock_set_sndtimeo(struct sock *sk, s64 secs);
 
 #endif	/* _SOCK_H */
diff --git a/net/core/sock.c b/net/core/sock.c
index 3c6ebf952e9ad..2ca3425b519c0 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -729,6 +729,14 @@ void sock_set_reuseaddr(struct sock *sk)
 }
 EXPORT_SYMBOL(sock_set_reuseaddr);
 
+void sock_set_reuseport(struct sock *sk)
+{
+	lock_sock(sk);
+	sk->sk_reuseport = true;
+	release_sock(sk);
+}
+EXPORT_SYMBOL(sock_set_reuseport);
+
 void sock_no_linger(struct sock *sk)
 {
 	lock_sock(sk);
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 30082cd039960..399848c2bcb29 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1594,21 +1594,6 @@ static int xs_get_random_port(void)
 	return rand + min;
 }
 
-/**
- * xs_set_reuseaddr_port - set the socket's port and address reuse options
- * @sock: socket
- *
- * Note that this function has to be called on all sockets that share the
- * same port, and it must be called before binding.
- */
-static void xs_sock_set_reuseport(struct socket *sock)
-{
-	int opt = 1;
-
-	kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEPORT,
-			(char *)&opt, sizeof(opt));
-}
-
 static unsigned short xs_sock_getport(struct socket *sock)
 {
 	struct sockaddr_storage buf;
@@ -1801,7 +1786,7 @@ static struct socket *xs_create_sock(struct rpc_xprt *xprt,
 	xs_reclassify_socket(family, sock);
 
 	if (reuseport)
-		xs_sock_set_reuseport(sock);
+		sock_set_reuseport(sock->sk);
 
 	err = xs_bind(transport, sock);
 	if (err) {
-- 
2.26.2

  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 ` Christoph Hellwig [this message]
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 ` [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

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