Release 4.14 net/ipv4/tcp_diag.c
/*
* tcp_diag.c Module for monitoring TCP transport protocols sockets.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
* 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 <linux/module.h>
#include <linux/net.h>
#include <linux/sock_diag.h>
#include <linux/inet_diag.h>
#include <linux/tcp.h>
#include <net/netlink.h>
#include <net/tcp.h>
static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
void *_info)
{
struct tcp_info *info = _info;
if (sk_state_load(sk) == TCP_LISTEN) {
r->idiag_rqueue = sk->sk_ack_backlog;
r->idiag_wqueue = sk->sk_max_ack_backlog;
} else if (sk->sk_type == SOCK_STREAM) {
const struct tcp_sock *tp = tcp_sk(sk);
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arnaldo Carvalho de Melo | 62 | 52.54% | 1 | 16.67% |
| Craig Gallek | 20 | 16.95% | 1 | 16.67% |
| Sridhar Samudrala | 14 | 11.86% | 1 | 16.67% |
| Rick Jones | 12 | 10.17% | 1 | 16.67% |
| Eric Dumazet | 10 | 8.47% | 2 | 33.33% |
| Total | 118 | 100.00% | 6 | 100.00% |
#ifdef CONFIG_TCP_MD5SIG
static void tcp_diag_md5sig_fill(struct tcp_diag_md5sig *info,
const struct tcp_md5sig_key *key)
{
info->tcpm_family = key->family;
info->tcpm_prefixlen = key->prefixlen;
info->tcpm_keylen = key->keylen;
memcpy(info->tcpm_key, key->key, key->keylen);
if (key->family == AF_INET)
info->tcpm_addr[0] = key->addr.a4.s_addr;
#if IS_ENABLED(CONFIG_IPV6)
else if (key->family == AF_INET6)
memcpy(&info->tcpm_addr, &key->addr.a6,
sizeof(info->tcpm_addr));
#endif
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Ivan Delalande | 118 | 100.00% | 1 | 100.00% |
| Total | 118 | 100.00% | 1 | 100.00% |
static int tcp_diag_put_md5sig(struct sk_buff *skb,
const struct tcp_md5sig_info *md5sig)
{
const struct tcp_md5sig_key *key;
struct tcp_diag_md5sig *info;
struct nlattr *attr;
int md5sig_count = 0;
hlist_for_each_entry_rcu(key, &md5sig->head, node)
md5sig_count++;
if (md5sig_count == 0)
return 0;
attr = nla_reserve(skb, INET_DIAG_MD5SIG,
md5sig_count * sizeof(struct tcp_diag_md5sig));
if (!attr)
return -EMSGSIZE;
info = nla_data(attr);
memset(info, 0, md5sig_count * sizeof(struct tcp_diag_md5sig));
hlist_for_each_entry_rcu(key, &md5sig->head, node) {
tcp_diag_md5sig_fill(info++, key);
if (--md5sig_count == 0)
break;
}
return 0;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Ivan Delalande | 135 | 100.00% | 1 | 100.00% |
| Total | 135 | 100.00% | 1 | 100.00% |
#endif
static int tcp_diag_get_aux(struct sock *sk, bool net_admin,
struct sk_buff *skb)
{
#ifdef CONFIG_TCP_MD5SIG
if (net_admin) {
struct tcp_md5sig_info *md5sig;
int err = 0;
rcu_read_lock();
md5sig = rcu_dereference(tcp_sk(sk)->md5sig_info);
if (md5sig)
err = tcp_diag_put_md5sig(skb, md5sig);
rcu_read_unlock();
if (err < 0)
return err;
}
#endif
return 0;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Ivan Delalande | 83 | 100.00% | 1 | 100.00% |
| Total | 83 | 100.00% | 1 | 100.00% |
static size_t tcp_diag_get_aux_size(struct sock *sk, bool net_admin)
{
size_t size = 0;
#ifdef CONFIG_TCP_MD5SIG
if (net_admin && sk_fullsock(sk)) {
const struct tcp_md5sig_info *md5sig;
const struct tcp_md5sig_key *key;
size_t md5sig_count = 0;
rcu_read_lock();
md5sig = rcu_dereference(tcp_sk(sk)->md5sig_info);
if (md5sig) {
hlist_for_each_entry_rcu(key, &md5sig->head, node)
md5sig_count++;
}
rcu_read_unlock();
size += nla_total_size(md5sig_count *
sizeof(struct tcp_diag_md5sig));
}
#endif
return size;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Ivan Delalande | 103 | 100.00% | 1 | 100.00% |
| Total | 103 | 100.00% | 1 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pavel Emelyanov | 40 | 97.56% | 2 | 66.67% |
| Eric Dumazet | 1 | 2.44% | 1 | 33.33% |
| Total | 41 | 100.00% | 3 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pavel Emelyanov | 35 | 97.22% | 2 | 66.67% |
| Eric Dumazet | 1 | 2.78% | 1 | 33.33% |
| Total | 36 | 100.00% | 3 | 100.00% |
#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);
int err;
if (IS_ERR(sk))
return PTR_ERR(sk);
err = sock_diag_destroy(sk, ECONNABORTED);
sock_gen_put(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Lorenzo Colitti | 64 | 83.12% | 1 | 50.00% |
| David Ahern | 13 | 16.88% | 1 | 50.00% |
| Total | 77 | 100.00% | 2 | 100.00% |
#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_get_aux = tcp_diag_get_aux,
.idiag_get_aux_size = tcp_diag_get_aux_size,
.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)
{
return inet_diag_register(&tcp_diag_handler);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arnaldo Carvalho de Melo | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static void __exit tcp_diag_exit(void)
{
inet_diag_unregister(&tcp_diag_handler);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arnaldo Carvalho de Melo | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
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 */);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ivan Delalande | 457 | 53.20% | 1 | 5.26% |
| Arnaldo Carvalho de Melo | 138 | 16.07% | 1 | 5.26% |
| Pavel Emelyanov | 88 | 10.24% | 5 | 26.32% |
| Lorenzo Colitti | 87 | 10.13% | 1 | 5.26% |
| Craig Gallek | 29 | 3.38% | 2 | 10.53% |
| Sridhar Samudrala | 14 | 1.63% | 1 | 5.26% |
| Eric Dumazet | 13 | 1.51% | 4 | 21.05% |
| David Ahern | 13 | 1.51% | 1 | 5.26% |
| Rick Jones | 12 | 1.40% | 1 | 5.26% |
| Jean Delvare | 7 | 0.81% | 1 | 5.26% |
| Adrian Bunk | 1 | 0.12% | 1 | 5.26% |
| Total | 859 | 100.00% | 19 | 100.00% |
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