path: root/net/ipv4/tcp_diag.c
diff options
authorLorenzo Colitti <lorenzo@google.com>2015-12-16 12:30:05 +0900
committerDavid S. Miller <davem@davemloft.net>2015-12-15 23:26:52 -0500
commitc1e64e298b8cad309091b95d8436a0255c84f54a (patch)
treec9ddd8cb837aabafdea04d5c04b74902e5da1a21 /net/ipv4/tcp_diag.c
parentnet: diag: Support SOCK_DESTROY for inet sockets. (diff)
net: diag: Support destroying TCP sockets.
This implements SOCK_DESTROY for TCP sockets. It causes all blocking calls on the socket to fail fast with ECONNABORTED and causes a protocol close of the socket. It informs the other end of the connection by sending a RST, i.e., initiating a TCP ABORT as per RFC 793. ECONNABORTED was chosen for consistency with FreeBSD. Signed-off-by: Lorenzo Colitti <lorenzo@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_diag.c')
1 files changed, 19 insertions, 0 deletions
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index b31604086edd..4d610934fb39 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -10,6 +10,8 @@
#include <linux/module.h>
+#include <linux/net.h>
+#include <linux/sock_diag.h>
#include <linux/inet_diag.h>
#include <linux/tcp.h>
@@ -46,12 +48,29 @@ static int tcp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh,
return inet_diag_dump_one_icsk(&tcp_hashinfo, in_skb, nlh, req);
+static int tcp_diag_destroy(struct sk_buff *in_skb,
+ const struct inet_diag_req_v2 *req)
+ struct net *net = sock_net(in_skb->sk);
+ struct sock *sk = inet_diag_find_one_icsk(net, &tcp_hashinfo, req);
+ if (IS_ERR(sk))
+ return PTR_ERR(sk);
+ return sock_diag_destroy(sk, ECONNABORTED);
static const struct inet_diag_handler tcp_diag_handler = {
.dump = tcp_diag_dump,
.dump_one = tcp_diag_dump_one,
.idiag_get_info = tcp_diag_get_info,
.idiag_type = IPPROTO_TCP,
.idiag_info_size = sizeof(struct tcp_info),
+ .destroy = tcp_diag_destroy,
static int __init tcp_diag_init(void)