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-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 07/33] net: add sock_bindtoindex
Date: Wed, 20 May 2020 21:54:43 +0200 [thread overview]
Message-ID: <20200520195509.2215098-8-hch@lst.de> (raw)
In-Reply-To: <20200520195509.2215098-1-hch@lst.de>
Add a helper to directly set the SO_BINDTOIFINDEX 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 | 21 +++++++++++++++------
net/ipv4/udp_tunnel.c | 4 +---
net/ipv6/ip6_udp_tunnel.c | 4 +---
4 files changed, 18 insertions(+), 12 deletions(-)
diff --git a/include/net/sock.h b/include/net/sock.h
index 9a7b9e98685ac..cdec7bc055d5b 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2688,6 +2688,7 @@ static inline bool sk_dev_equal_l3scope(struct sock *sk, int dif)
void sock_def_readable(struct sock *sk);
+int sock_bindtoindex(struct sock *sk, int ifindex);
void sock_no_linger(struct sock *sk);
void sock_set_priority(struct sock *sk, u32 priority);
void sock_set_reuseaddr(struct sock *sk);
diff --git a/net/core/sock.c b/net/core/sock.c
index d3b1d61e4f768..23f80880fbb2c 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -566,7 +566,7 @@ struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie)
}
EXPORT_SYMBOL(sk_dst_check);
-static int sock_setbindtodevice_locked(struct sock *sk, int ifindex)
+static int sock_bindtoindex_locked(struct sock *sk, int ifindex)
{
int ret = -ENOPROTOOPT;
#ifdef CONFIG_NETDEVICES
@@ -594,6 +594,18 @@ static int sock_setbindtodevice_locked(struct sock *sk, int ifindex)
return ret;
}
+int sock_bindtoindex(struct sock *sk, int ifindex)
+{
+ int ret;
+
+ lock_sock(sk);
+ ret = sock_bindtoindex_locked(sk, ifindex);
+ release_sock(sk);
+
+ return ret;
+}
+EXPORT_SYMBOL(sock_bindtoindex);
+
static int sock_setbindtodevice(struct sock *sk, char __user *optval,
int optlen)
{
@@ -634,10 +646,7 @@ static int sock_setbindtodevice(struct sock *sk, char __user *optval,
goto out;
}
- lock_sock(sk);
- ret = sock_setbindtodevice_locked(sk, index);
- release_sock(sk);
-
+ return sock_bindtoindex(sk, index);
out:
#endif
@@ -1216,7 +1225,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
break;
case SO_BINDTOIFINDEX:
- ret = sock_setbindtodevice_locked(sk, val);
+ ret = sock_bindtoindex_locked(sk, val);
break;
default:
diff --git a/net/ipv4/udp_tunnel.c b/net/ipv4/udp_tunnel.c
index 150e6f0fdbf59..2158e8bddf41c 100644
--- a/net/ipv4/udp_tunnel.c
+++ b/net/ipv4/udp_tunnel.c
@@ -22,9 +22,7 @@ int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
goto error;
if (cfg->bind_ifindex) {
- err = kernel_setsockopt(sock, SOL_SOCKET, SO_BINDTOIFINDEX,
- (void *)&cfg->bind_ifindex,
- sizeof(cfg->bind_ifindex));
+ err = sock_bindtoindex(sock->sk, cfg->bind_ifindex);
if (err < 0)
goto error;
}
diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c
index 58956a6b66a21..6523609516d25 100644
--- a/net/ipv6/ip6_udp_tunnel.c
+++ b/net/ipv6/ip6_udp_tunnel.c
@@ -33,9 +33,7 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
goto error;
}
if (cfg->bind_ifindex) {
- err = kernel_setsockopt(sock, SOL_SOCKET, SO_BINDTOIFINDEX,
- (void *)&cfg->bind_ifindex,
- sizeof(cfg->bind_ifindex));
+ err = sock_bindtoindex(sock->sk, cfg->bind_ifindex);
if (err < 0)
goto error;
}
--
2.26.2
next prev parent reply other threads:[~2020-05-20 20:00 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-20 19:54 remove kernel_setsockopt and kernel_getsockopt v2 Christoph Hellwig
2020-05-20 19:54 ` [PATCH 01/33] dlm: use the tcp version of accept_from_sock for sctp as well Christoph Hellwig
2020-05-20 19:54 ` [PATCH 02/33] net: remove kernel_getsockopt Christoph Hellwig
2020-05-20 19:54 ` [PATCH 03/33] net: add sock_set_reuseaddr Christoph Hellwig
2020-05-20 19:54 ` [PATCH 04/33] net: add sock_no_linger Christoph Hellwig
2020-05-20 19:54 ` [PATCH 05/33] net: add sock_set_priority Christoph Hellwig
2020-05-20 19:54 ` [PATCH 06/33] net: add sock_set_sndtimeo Christoph Hellwig
2020-05-20 19:54 ` Christoph Hellwig [this message]
2020-05-20 19:54 ` [PATCH 08/33] net: add sock_enable_timestamps Christoph Hellwig
2020-05-20 19:54 ` [PATCH 09/33] net: add sock_set_keepalive Christoph Hellwig
2020-05-20 19:54 ` [PATCH 10/33] net: add sock_set_rcvbuf Christoph Hellwig
2020-05-20 19:54 ` [PATCH 11/33] net: add sock_set_reuseport Christoph Hellwig
2020-05-20 19:54 ` [PATCH 12/33] tcp: add tcp_sock_set_cork Christoph Hellwig
2020-05-20 19:54 ` [PATCH 13/33] tcp: add tcp_sock_set_nodelay Christoph Hellwig
2020-05-20 19:54 ` [PATCH 14/33] tcp: add tcp_sock_set_quickack Christoph Hellwig
2020-05-20 19:54 ` [PATCH 15/33] tcp: add tcp_sock_set_syncnt Christoph Hellwig
2020-05-20 19:54 ` [PATCH 16/33] tcp: add tcp_sock_set_user_timeout Christoph Hellwig
2020-05-20 19:54 ` [PATCH 17/33] tcp: add tcp_sock_set_keepidle Christoph Hellwig
2020-05-20 19:54 ` [PATCH 18/33] tcp: add tcp_sock_set_keepintvl Christoph Hellwig
2020-05-20 19:54 ` [PATCH 19/33] tcp: add tcp_sock_set_keepcnt Christoph Hellwig
2020-05-20 19:54 ` [PATCH 20/33] ipv4: add ip_sock_set_tos Christoph Hellwig
2020-05-20 19:54 ` [PATCH 21/33] ipv4: add ip_sock_set_freebind Christoph Hellwig
2020-05-20 19:54 ` [PATCH 22/33] ipv4: add ip_sock_set_recverr Christoph Hellwig
2020-05-20 19:54 ` [PATCH 23/33] ipv4: add ip_sock_set_mtu_discover Christoph Hellwig
2020-05-20 19:55 ` [PATCH 24/33] ipv4: add ip_sock_set_pktinfo Christoph Hellwig
2020-05-20 19:55 ` [PATCH 25/33] ipv6: add ip6_sock_set_v6only Christoph Hellwig
2020-05-20 19:55 ` [PATCH 26/33] ipv6: add ip6_sock_set_recverr Christoph Hellwig
2020-05-20 19:55 ` [PATCH 27/33] ipv6: add ip6_sock_set_addr_preferences Christoph Hellwig
2020-05-20 19:55 ` [PATCH 28/33] ipv6: add ip6_sock_set_recvpktinfo Christoph Hellwig
2020-05-20 19:55 ` [PATCH 29/33] rxrpc: add rxrpc_sock_set_min_security_level Christoph Hellwig
2020-05-20 19:55 ` [PATCH 30/33] tipc: call tsk_set_importance from tipc_topsrv_create_listener Christoph Hellwig
2020-05-20 19:55 ` [PATCH 31/33] sctp: add sctp_sock_set_nodelay Christoph Hellwig
2020-05-20 23:10 ` Marcelo Ricardo Leitner
2020-05-20 23:23 ` David Miller
2020-05-20 23:39 ` Marcelo Ricardo Leitner
2020-05-21 8:34 ` Christoph Hellwig
2020-05-21 9:06 ` David Laight
2020-05-21 9:08 ` 'Christoph Hellwig'
2020-05-21 13:33 ` Marcelo Ricardo Leitner
2020-05-21 13:57 ` Christoph Hellwig
2020-05-20 19:55 ` [PATCH 32/33] net: add a new bind_add method Christoph Hellwig
2020-05-20 23:00 ` Marcelo Ricardo Leitner
2020-05-21 8:42 ` Christoph Hellwig
2020-05-21 13:54 ` Marcelo Ricardo Leitner
2020-05-20 19:55 ` [PATCH 33/33] net: remove kernel_setsockopt Christoph Hellwig
2020-05-21 7:44 ` [PATCH 29/33] rxrpc: add rxrpc_sock_set_min_security_level David Howells
2020-05-21 8:01 ` remove kernel_setsockopt and kernel_getsockopt v2 David Laight
2020-05-21 9:11 ` 'Christoph Hellwig'
2020-05-21 10:46 ` David Laight
2020-05-23 7:23 ` Christoph Hellwig
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