Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * tcp_diag.c	Module for monitoring TCP transport protocols sockets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/sock_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/inet_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/tcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <net/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <net/tcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 			      void *_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	struct tcp_info *info = _info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	if (inet_sk_state_load(sk) == TCP_LISTEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 		r->idiag_rqueue = READ_ONCE(sk->sk_ack_backlog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 		r->idiag_wqueue = READ_ONCE(sk->sk_max_ack_backlog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	} else if (sk->sk_type == SOCK_STREAM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		const struct tcp_sock *tp = tcp_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 		r->idiag_rqueue = max_t(int, READ_ONCE(tp->rcv_nxt) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 					     READ_ONCE(tp->copied_seq), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		r->idiag_wqueue = READ_ONCE(tp->write_seq) - tp->snd_una;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	if (info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		tcp_get_info(sk, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #ifdef CONFIG_TCP_MD5SIG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static void tcp_diag_md5sig_fill(struct tcp_diag_md5sig *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 				 const struct tcp_md5sig_key *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	info->tcpm_family = key->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	info->tcpm_prefixlen = key->prefixlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	info->tcpm_keylen = key->keylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	memcpy(info->tcpm_key, key->key, key->keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	if (key->family == AF_INET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		info->tcpm_addr[0] = key->addr.a4.s_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	#if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	else if (key->family == AF_INET6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		memcpy(&info->tcpm_addr, &key->addr.a6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		       sizeof(info->tcpm_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	#endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) static int tcp_diag_put_md5sig(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 			       const struct tcp_md5sig_info *md5sig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	const struct tcp_md5sig_key *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct tcp_diag_md5sig *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	int md5sig_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	hlist_for_each_entry_rcu(key, &md5sig->head, node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		md5sig_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	if (md5sig_count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	attr = nla_reserve(skb, INET_DIAG_MD5SIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 			   md5sig_count * sizeof(struct tcp_diag_md5sig));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	if (!attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	info = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	memset(info, 0, md5sig_count * sizeof(struct tcp_diag_md5sig));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	hlist_for_each_entry_rcu(key, &md5sig->head, node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		tcp_diag_md5sig_fill(info++, key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		if (--md5sig_count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) static int tcp_diag_put_ulp(struct sk_buff *skb, struct sock *sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			    const struct tcp_ulp_ops *ulp_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	struct nlattr *nest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	nest = nla_nest_start_noflag(skb, INET_DIAG_ULP_INFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (!nest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	err = nla_put_string(skb, INET_ULP_INFO_NAME, ulp_ops->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		goto nla_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	if (ulp_ops->get_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		err = ulp_ops->get_info(sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		goto nla_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	nla_nest_end(skb, nest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) nla_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	nla_nest_cancel(skb, nest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static int tcp_diag_get_aux(struct sock *sk, bool net_admin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 			    struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	struct inet_connection_sock *icsk = inet_csk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #ifdef CONFIG_TCP_MD5SIG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (net_admin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		struct tcp_md5sig_info *md5sig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		md5sig = rcu_dereference(tcp_sk(sk)->md5sig_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		if (md5sig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			err = tcp_diag_put_md5sig(skb, md5sig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (net_admin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		const struct tcp_ulp_ops *ulp_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		ulp_ops = icsk->icsk_ulp_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		if (ulp_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 			err = tcp_diag_put_ulp(skb, sk, ulp_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static size_t tcp_diag_get_aux_size(struct sock *sk, bool net_admin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	struct inet_connection_sock *icsk = inet_csk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	size_t size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #ifdef CONFIG_TCP_MD5SIG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	if (net_admin && sk_fullsock(sk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		const struct tcp_md5sig_info *md5sig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		const struct tcp_md5sig_key *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		size_t md5sig_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		md5sig = rcu_dereference(tcp_sk(sk)->md5sig_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		if (md5sig) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 			hlist_for_each_entry_rcu(key, &md5sig->head, node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 				md5sig_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		size += nla_total_size(md5sig_count *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 				       sizeof(struct tcp_diag_md5sig));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	if (net_admin && sk_fullsock(sk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		const struct tcp_ulp_ops *ulp_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		ulp_ops = icsk->icsk_ulp_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		if (ulp_ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 			size += nla_total_size(0) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 				nla_total_size(TCP_ULP_NAME_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			if (ulp_ops->get_info_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 				size += ulp_ops->get_info_size(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static void tcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 			  const struct inet_diag_req_v2 *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	inet_diag_dump_icsk(&tcp_hashinfo, skb, cb, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static int tcp_diag_dump_one(struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 			     const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	return inet_diag_dump_one_icsk(&tcp_hashinfo, cb, req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) #ifdef CONFIG_INET_DIAG_DESTROY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static int tcp_diag_destroy(struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			    const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	struct net *net = sock_net(in_skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	struct sock *sk = inet_diag_find_one_icsk(net, &tcp_hashinfo, req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	if (IS_ERR(sk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		return PTR_ERR(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	err = sock_diag_destroy(sk, ECONNABORTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	sock_gen_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static const struct inet_diag_handler tcp_diag_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	.dump			= tcp_diag_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	.dump_one		= tcp_diag_dump_one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	.idiag_get_info		= tcp_diag_get_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	.idiag_get_aux		= tcp_diag_get_aux,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	.idiag_get_aux_size	= tcp_diag_get_aux_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	.idiag_type		= IPPROTO_TCP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	.idiag_info_size	= sizeof(struct tcp_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #ifdef CONFIG_INET_DIAG_DESTROY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	.destroy		= tcp_diag_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int __init tcp_diag_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	return inet_diag_register(&tcp_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static void __exit tcp_diag_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	inet_diag_unregister(&tcp_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) module_init(tcp_diag_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) module_exit(tcp_diag_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-6 /* AF_INET - IPPROTO_TCP */);