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| author | Lorenzo Colitti <lorenzo@google.com> | 2015-12-16 12:30:05 +0900 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-12-15 23:26:52 -0500 |
| commit | c1e64e298b8cad309091b95d8436a0255c84f54a (patch) | |
| tree | c9ddd8cb837aabafdea04d5c04b74902e5da1a21 /net/ipv4/tcp_diag.c | |
| parent | 6eb5d2e08f071c05ecbe135369c9ad418826cab2 (diff) | |
| download | linux-c1e64e298b8cad309091b95d8436a0255c84f54a.tar.gz linux-c1e64e298b8cad309091b95d8436a0255c84f54a.tar.xz | |
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')
| -rw-r--r-- | net/ipv4/tcp_diag.c | 19 |
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); } +#ifdef CONFIG_INET_DIAG_DESTROY +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); +} +#endif + 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), +#ifdef CONFIG_INET_DIAG_DESTROY + .destroy = tcp_diag_destroy, +#endif }; static int __init tcp_diag_init(void) |