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>,
Vlad Yasevich <vyasevich@gmail.com>,
Neil Horman <nhorman@tuxdriver.com>,
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
Jon Maloy <jmaloy@redhat.com>, Ying Xue <ying.xue@windriver.com>,
drbd-dev@lists.linbit.com, linux-block@vger.kernel.org,
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, linux-sctp@vger.kernel.org,
ceph-devel@vger.kernel.org, rds-devel@oss.oracle.com,
linux-nfs@vger.kernel.org
Subject: [PATCH 01/33] net: add sock_set_reuseaddr
Date: Wed, 13 May 2020 08:26:16 +0200 [thread overview]
Message-ID: <20200513062649.2100053-2-hch@lst.de> (raw)
In-Reply-To: <20200513062649.2100053-1-hch@lst.de>
Add a helper to directly set the SO_REUSEADDR sockopt from kernel space
without going through a fake uaccess.
For this the iscsi target now has to formally depend on inet to avoid
a mostly theoretical compile failure. For actual operation it already
did depend on having ipv4 or ipv6 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/infiniband/sw/siw/siw_cm.c | 18 +++++-------------
drivers/nvme/target/tcp.c | 8 +-------
drivers/target/iscsi/Kconfig | 2 +-
drivers/target/iscsi/iscsi_target_login.c | 9 +--------
fs/dlm/lowcomms.c | 6 +-----
include/net/sock.h | 1 +
net/core/sock.c | 8 ++++++++
7 files changed, 18 insertions(+), 34 deletions(-)
diff --git a/drivers/infiniband/sw/siw/siw_cm.c b/drivers/infiniband/sw/siw/siw_cm.c
index 559e5fd3bad8b..6d7c8c933736c 100644
--- a/drivers/infiniband/sw/siw/siw_cm.c
+++ b/drivers/infiniband/sw/siw/siw_cm.c
@@ -1312,17 +1312,14 @@ static void siw_cm_llp_state_change(struct sock *sk)
static int kernel_bindconnect(struct socket *s, struct sockaddr *laddr,
struct sockaddr *raddr)
{
- int rv, flags = 0, s_val = 1;
+ int rv, flags = 0;
size_t size = laddr->sa_family == AF_INET ?
sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
/*
* Make address available again asap.
*/
- rv = kernel_setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&s_val,
- sizeof(s_val));
- if (rv < 0)
- return rv;
+ sock_set_reuseaddr(s->sk, SK_CAN_REUSE);
rv = s->ops->bind(s, laddr, size);
if (rv < 0)
@@ -1781,7 +1778,7 @@ int siw_create_listen(struct iw_cm_id *id, int backlog)
struct siw_cep *cep = NULL;
struct siw_device *sdev = to_siw_dev(id->device);
int addr_family = id->local_addr.ss_family;
- int rv = 0, s_val;
+ int rv = 0;
if (addr_family != AF_INET && addr_family != AF_INET6)
return -EAFNOSUPPORT;
@@ -1793,13 +1790,8 @@ int siw_create_listen(struct iw_cm_id *id, int backlog)
/*
* Allow binding local port when still in TIME_WAIT from last close.
*/
- s_val = 1;
- rv = kernel_setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&s_val,
- sizeof(s_val));
- if (rv) {
- siw_dbg(id->device, "setsockopt error: %d\n", rv);
- goto error;
- }
+ sock_set_reuseaddr(s->sk, SK_CAN_REUSE);
+
if (addr_family == AF_INET) {
struct sockaddr_in *laddr = &to_sockaddr_in(id->local_addr);
diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index f0da04e960f40..791aa32beeb98 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -1632,6 +1632,7 @@ static int nvmet_tcp_add_port(struct nvmet_port *nport)
port->sock->sk->sk_user_data = port;
port->data_ready = port->sock->sk->sk_data_ready;
port->sock->sk->sk_data_ready = nvmet_tcp_listen_data_ready;
+ sock_set_reuseaddr(port->sock->sk, SK_CAN_REUSE);
opt = 1;
ret = kernel_setsockopt(port->sock, IPPROTO_TCP,
@@ -1641,13 +1642,6 @@ static int nvmet_tcp_add_port(struct nvmet_port *nport)
goto err_sock;
}
- ret = kernel_setsockopt(port->sock, SOL_SOCKET, SO_REUSEADDR,
- (char *)&opt, sizeof(opt));
- if (ret) {
- pr_err("failed to set SO_REUSEADDR sock opt %d\n", ret);
- goto err_sock;
- }
-
if (so_priority > 0) {
ret = kernel_setsockopt(port->sock, SOL_SOCKET, SO_PRIORITY,
(char *)&so_priority, sizeof(so_priority));
diff --git a/drivers/target/iscsi/Kconfig b/drivers/target/iscsi/Kconfig
index 1f93ea3813536..922484ea4e304 100644
--- a/drivers/target/iscsi/Kconfig
+++ b/drivers/target/iscsi/Kconfig
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config ISCSI_TARGET
tristate "Linux-iSCSI.org iSCSI Target Mode Stack"
- depends on NET
+ depends on INET
select CRYPTO
select CRYPTO_CRC32C
select CRYPTO_CRC32C_INTEL if X86
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 731ee67fe914b..7da59ece3eb99 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -909,14 +909,7 @@ int iscsit_setup_np(
}
}
- /* FIXME: Someone please explain why this is endian-safe */
- ret = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
- (char *)&opt, sizeof(opt));
- if (ret < 0) {
- pr_err("kernel_setsockopt() for SO_REUSEADDR"
- " failed\n");
- goto fail;
- }
+ sock_set_reuseaddr(sock->sk, SK_CAN_REUSE);
ret = kernel_setsockopt(sock, IPPROTO_IP, IP_FREEBIND,
(char *)&opt, sizeof(opt));
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index cdfaf4f0e11a0..48e7ba796c6fb 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1244,12 +1244,8 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, (char *)&one,
sizeof(one));
- result = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
- (char *)&one, sizeof(one));
+ sock_set_reuseaddr(sock->sk, SK_CAN_REUSE);
- if (result < 0) {
- log_print("Failed to set SO_REUSEADDR on socket: %d", result);
- }
write_lock_bh(&sock->sk->sk_callback_lock);
sock->sk->sk_user_data = con;
save_listen_callbacks(sock);
diff --git a/include/net/sock.h b/include/net/sock.h
index 3e8c6d4b4b59f..e801a147ad746 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2687,5 +2687,6 @@ static inline bool sk_dev_equal_l3scope(struct sock *sk, int dif)
}
void sock_def_readable(struct sock *sk);
+void sock_set_reuseaddr(struct sock *sk, unsigned char reuse);
#endif /* _SOCK_H */
diff --git a/net/core/sock.c b/net/core/sock.c
index fd85e651ce284..ff4faa3e68ac4 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -712,6 +712,14 @@ bool sk_mc_loop(struct sock *sk)
}
EXPORT_SYMBOL(sk_mc_loop);
+void sock_set_reuseaddr(struct sock *sk, unsigned char reuse)
+{
+ lock_sock(sk);
+ sk->sk_reuse = reuse;
+ release_sock(sk);
+}
+EXPORT_SYMBOL(sock_set_reuseaddr);
+
/*
* This is meant for all protocols to use and covers goings on
* at the socket level. Everything here is generic.
--
2.26.2
next prev parent reply other threads:[~2020-05-13 6:27 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 6:26 remove kernel_setsockopt and kernel_getsockopt Christoph Hellwig
2020-05-13 6:26 ` Christoph Hellwig [this message]
2020-05-13 6:26 ` [PATCH 02/33] net: add sock_set_linger Christoph Hellwig
2020-05-13 6:26 ` [PATCH 03/33] net: add sock_set_priority Christoph Hellwig
2020-05-13 6:26 ` [PATCH 04/33] net: add sock_set_sndtimeo Christoph Hellwig
2020-05-13 6:26 ` [PATCH 05/33] net: add sock_bindtoindex Christoph Hellwig
2020-05-13 6:26 ` [PATCH 06/33] net: add sock_set_timestamps Christoph Hellwig
2020-05-13 6:26 ` [PATCH 07/33] net: add sock_set_keepalive Christoph Hellwig
2020-05-13 6:26 ` [PATCH 08/33] net: add sock_set_rcvbuf Christoph Hellwig
2020-05-13 6:26 ` [PATCH 09/33] net: add sock_set_reuseport Christoph Hellwig
2020-05-13 6:26 ` [PATCH 10/33] tcp: add tcp_sock_set_cork Christoph Hellwig
2020-05-13 6:26 ` [PATCH 11/33] tcp: tcp_sock_set_nodelay Christoph Hellwig
2020-05-13 12:51 ` Jason Gunthorpe
2020-05-13 6:26 ` [PATCH 12/33] tcp: add tcp_sock_set_quickack Christoph Hellwig
2020-05-13 6:26 ` [PATCH 13/33] tcp: add tcp_sock_set_syncnt Christoph Hellwig
2020-05-13 6:26 ` [PATCH 14/33] tcp: add tcp_sock_set_user_timeout Christoph Hellwig
2020-05-13 6:26 ` [PATCH 15/33] tcp: add tcp_sock_set_keepidle Christoph Hellwig
2020-05-13 6:26 ` [PATCH 16/33] tcp: add tcp_sock_set_keepintvl Christoph Hellwig
2020-05-13 6:26 ` [PATCH 17/33] tcp: add tcp_sock_set_keepcnt Christoph Hellwig
2020-05-13 6:26 ` [PATCH 18/33] ipv4: add ip_sock_set_tos Christoph Hellwig
2020-05-13 6:26 ` [PATCH 19/33] ipv4: add ip_sock_set_freebind Christoph Hellwig
2020-05-13 6:26 ` [PATCH 20/33] ipv4: add ip_sock_set_recverr Christoph Hellwig
2020-05-13 21:00 ` Joe Perches
2020-05-14 10:30 ` Christoph Hellwig
2020-05-14 11:51 ` Joe Perches
2020-05-20 14:18 ` Christoph Hellwig
2020-05-13 6:26 ` [PATCH 21/33] ipv4: add ip_sock_set_mtu_discover Christoph Hellwig
2020-05-13 6:26 ` [PATCH 22/33] ipv6: add ip6_sock_set_v6only Christoph Hellwig
2020-05-13 6:26 ` [PATCH 23/33] ipv6: add ip6_sock_set_recverr Christoph Hellwig
2020-05-13 6:26 ` [PATCH 24/33] ipv6: add ip6_sock_set_addr_preferences Christoph Hellwig
2020-05-13 6:26 ` [PATCH 25/33] ipv6: add ip6_sock_set_recvpktinfo Christoph Hellwig
2020-05-13 6:26 ` [PATCH 26/33] sctp: lift copying in addrs into sctp_setsockopt Christoph Hellwig
2020-05-13 6:26 ` [PATCH 27/33] sctp: export sctp_setsockopt_bindx Christoph Hellwig
2020-05-13 18:00 ` Marcelo Ricardo Leitner
2020-05-14 6:28 ` Christoph Hellwig
2020-05-14 8:23 ` David Laight
2020-05-14 10:40 ` is it ok to always pull in sctp for dlm, was: " Christoph Hellwig
2020-05-14 14:24 ` David Teigland
2020-05-15 15:20 ` David Howells
2020-05-15 15:24 ` Christoph Hellwig
2020-05-16 15:21 ` David Laight
2020-05-16 15:11 ` David Laight
2020-05-16 15:36 ` [Ocfs2-devel] " Matthew Wilcox
2020-05-17 8:48 ` David Laight
2020-05-13 6:26 ` [PATCH 28/33] sctp: add sctp_sock_set_nodelay Christoph Hellwig
2020-05-13 6:26 ` [PATCH 29/33] rxrpc_sock_set_min_security_level Christoph Hellwig
2020-05-13 6:26 ` [PATCH 30/33] tipc: call tsk_set_importance from tipc_topsrv_create_listener Christoph Hellwig
2020-05-13 6:26 ` [PATCH 31/33] net: remove kernel_setsockopt Christoph Hellwig
2020-05-13 6:26 ` [PATCH 32/33] sctp: add sctp_sock_get_primary_addr Christoph Hellwig
2020-05-13 18:03 ` Marcelo Ricardo Leitner
2020-05-14 9:51 ` David Laight
2020-05-14 12:30 ` David Laight
2020-05-14 13:27 ` David Laight
2020-05-13 6:26 ` [PATCH 33/33] net: remove kernel_getsockopt Christoph Hellwig
2020-05-13 13:13 ` [PATCH 29/33] rxrpc_sock_set_min_security_level David Howells
2020-05-14 10:29 ` Christoph Hellwig
2020-05-15 15:13 ` David Howells
2020-05-13 13:17 ` [PATCH 21/33] ipv4: add ip_sock_set_mtu_discover David Howells
2020-05-14 6:26 ` Christoph Hellwig
2020-05-15 15:15 ` David Howells
2020-05-13 13:24 ` [PATCH 20/33] ipv4: add ip_sock_set_recverr David Howells
2020-05-13 13:25 ` [PATCH 23/33] ipv6: add ip6_sock_set_recverr David Howells
2020-05-13 13:27 ` [PATCH 06/33] net: add sock_set_timestamps David Howells
2020-05-13 17:38 ` remove kernel_setsockopt and kernel_getsockopt Joe Perches
2020-05-14 6:27 ` Christoph Hellwig
2020-05-14 8:29 ` David Laight
2020-05-14 10:18 ` Christoph Hellwig
2020-05-14 10:26 ` David Laight
2020-05-14 10:34 ` 'Christoph Hellwig'
2020-05-14 11:11 ` David Laight
2020-05-14 19:35 ` [Ocfs2-devel] " Matthew Wilcox
2020-05-14 20:03 ` David Miller
2020-05-15 8:14 ` David Laight
2020-05-14 19:57 ` David Miller
2020-05-13 18:45 ` Sagi Grimberg
2020-05-13 19:12 ` David Miller
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