From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/net/ipv4/tcp_diag.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 kernel/net/ipv4/tcp_diag.c (limited to 'kernel/net/ipv4/tcp_diag.c') diff --git a/kernel/net/ipv4/tcp_diag.c b/kernel/net/ipv4/tcp_diag.c new file mode 100644 index 000000000..79b34a0f4 --- /dev/null +++ b/kernel/net/ipv4/tcp_diag.c @@ -0,0 +1,68 @@ +/* + * tcp_diag.c Module for monitoring TCP transport protocols sockets. + * + * Authors: Alexey Kuznetsov, + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include +#include + +#include + +#include + +static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, + void *_info) +{ + const struct tcp_sock *tp = tcp_sk(sk); + struct tcp_info *info = _info; + + if (sk->sk_state == TCP_LISTEN) { + r->idiag_rqueue = sk->sk_ack_backlog; + r->idiag_wqueue = sk->sk_max_ack_backlog; + } else { + r->idiag_rqueue = max_t(int, tp->rcv_nxt - tp->copied_seq, 0); + r->idiag_wqueue = tp->write_seq - tp->snd_una; + } + if (info) + tcp_get_info(sk, info); +} + +static void tcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, + const struct inet_diag_req_v2 *r, struct nlattr *bc) +{ + inet_diag_dump_icsk(&tcp_hashinfo, skb, cb, r, bc); +} + +static int tcp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh, + const struct inet_diag_req_v2 *req) +{ + return inet_diag_dump_one_icsk(&tcp_hashinfo, in_skb, nlh, req); +} + +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, +}; + +static int __init tcp_diag_init(void) +{ + return inet_diag_register(&tcp_diag_handler); +} + +static void __exit tcp_diag_exit(void) +{ + inet_diag_unregister(&tcp_diag_handler); +} + +module_init(tcp_diag_init); +module_exit(tcp_diag_exit); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-6 /* AF_INET - IPPROTO_TCP */); -- cgit 1.2.3-korg