Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 2 | * inet_diag.c Module for monitoring INET transport protocols sockets. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
Ilpo Järvinen | 172589c | 2007-08-28 15:50:33 -0700 | [diff] [blame] | 12 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/module.h> |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/fcntl.h> |
| 16 | #include <linux/random.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 17 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/cache.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/time.h> |
| 21 | |
| 22 | #include <net/icmp.h> |
| 23 | #include <net/tcp.h> |
| 24 | #include <net/ipv6.h> |
| 25 | #include <net/inet_common.h> |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 26 | #include <net/inet_connection_sock.h> |
| 27 | #include <net/inet_hashtables.h> |
| 28 | #include <net/inet_timewait_sock.h> |
| 29 | #include <net/inet6_hashtables.h> |
Arnaldo Carvalho de Melo | dc5fc57 | 2007-03-25 23:06:12 -0700 | [diff] [blame] | 30 | #include <net/netlink.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | #include <linux/inet.h> |
| 33 | #include <linux/stddef.h> |
| 34 | |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 35 | #include <linux/inet_diag.h> |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 36 | #include <linux/sock_diag.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 38 | static const struct inet_diag_handler **inet_diag_table; |
| 39 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 40 | struct inet_diag_entry { |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 41 | __be32 *saddr; |
| 42 | __be32 *daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | u16 sport; |
| 44 | u16 dport; |
| 45 | u16 family; |
| 46 | u16 userlocks; |
| 47 | }; |
| 48 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 49 | #define INET_DIAG_PUT(skb, attrtype, attrlen) \ |
Stephen Hemminger | 7c99c90 | 2005-06-23 12:20:36 -0700 | [diff] [blame] | 50 | RTA_DATA(__RTA_PUT(skb, attrtype, attrlen)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 52 | static DEFINE_MUTEX(inet_diag_table_mutex); |
| 53 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 54 | static const struct inet_diag_handler *inet_diag_lock_handler(int proto) |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 55 | { |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 56 | if (!inet_diag_table[proto]) |
Pavel Emelyanov | aec8dc6 | 2011-12-15 02:43:27 +0000 | [diff] [blame] | 57 | request_module("net-pf-%d-proto-%d-type-%d-%d", PF_NETLINK, |
| 58 | NETLINK_SOCK_DIAG, AF_INET, proto); |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 59 | |
| 60 | mutex_lock(&inet_diag_table_mutex); |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 61 | if (!inet_diag_table[proto]) |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 62 | return ERR_PTR(-ENOENT); |
| 63 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 64 | return inet_diag_table[proto]; |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | static inline void inet_diag_unlock_handler( |
| 68 | const struct inet_diag_handler *handler) |
| 69 | { |
| 70 | mutex_unlock(&inet_diag_table_mutex); |
| 71 | } |
| 72 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 73 | int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 74 | struct sk_buff *skb, struct inet_diag_req_v2 *req, |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 75 | u32 pid, u32 seq, u16 nlmsg_flags, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 76 | const struct nlmsghdr *unlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | { |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 78 | const struct inet_sock *inet = inet_sk(sk); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 79 | struct inet_diag_msg *r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | struct nlmsghdr *nlh; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 81 | void *info = NULL; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 82 | struct inet_diag_meminfo *minfo = NULL; |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 83 | unsigned char *b = skb_tail_pointer(skb); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 84 | const struct inet_diag_handler *handler; |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 85 | int ext = req->idiag_ext; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 86 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 87 | handler = inet_diag_table[req->sdiag_protocol]; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 88 | BUG_ON(handler == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 90 | nlh = nlmsg_put(skb, pid, seq, unlh->nlmsg_type, sizeof(*r), 0); |
| 91 | if (!nlh) { |
| 92 | nlmsg_trim(skb, b); |
| 93 | return -EMSGSIZE; |
| 94 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | nlh->nlmsg_flags = nlmsg_flags; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 96 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 97 | r = nlmsg_data(nlh); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 98 | BUG_ON(sk->sk_state == TCP_TIME_WAIT); |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 99 | |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 100 | if (ext & (1 << (INET_DIAG_MEMINFO - 1))) |
| 101 | minfo = INET_DIAG_PUT(skb, INET_DIAG_MEMINFO, sizeof(*minfo)); |
| 102 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 103 | r->idiag_family = sk->sk_family; |
| 104 | r->idiag_state = sk->sk_state; |
| 105 | r->idiag_timer = 0; |
| 106 | r->idiag_retrans = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 108 | r->id.idiag_if = sk->sk_bound_dev_if; |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 109 | sock_diag_save_cookie(sk, r->id.idiag_cookie); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 111 | r->id.idiag_sport = inet->inet_sport; |
| 112 | r->id.idiag_dport = inet->inet_dport; |
| 113 | r->id.idiag_src[0] = inet->inet_rcv_saddr; |
| 114 | r->id.idiag_dst[0] = inet->inet_daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
Maciej Żenczykowski | 717b6d8 | 2011-11-22 16:03:10 -0500 | [diff] [blame] | 116 | /* IPv6 dual-stack sockets use inet->tos for IPv4 connections, |
| 117 | * hence this needs to be included regardless of socket family. |
| 118 | */ |
| 119 | if (ext & (1 << (INET_DIAG_TOS - 1))) |
| 120 | RTA_PUT_U8(skb, INET_DIAG_TOS, inet->tos); |
| 121 | |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 122 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 123 | if (r->idiag_family == AF_INET6) { |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 124 | const struct ipv6_pinfo *np = inet6_sk(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 126 | *(struct in6_addr *)r->id.idiag_src = np->rcv_saddr; |
| 127 | *(struct in6_addr *)r->id.idiag_dst = np->daddr; |
Maciej Żenczykowski | 06236ac | 2011-11-07 14:23:11 +0000 | [diff] [blame] | 128 | if (ext & (1 << (INET_DIAG_TCLASS - 1))) |
| 129 | RTA_PUT_U8(skb, INET_DIAG_TCLASS, np->tclass); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | } |
| 131 | #endif |
| 132 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 133 | r->idiag_uid = sock_i_uid(sk); |
| 134 | r->idiag_inode = sock_i_ino(sk); |
| 135 | |
| 136 | if (minfo) { |
| 137 | minfo->idiag_rmem = sk_rmem_alloc_get(sk); |
| 138 | minfo->idiag_wmem = sk->sk_wmem_queued; |
| 139 | minfo->idiag_fmem = sk->sk_forward_alloc; |
| 140 | minfo->idiag_tmem = sk_wmem_alloc_get(sk); |
| 141 | } |
| 142 | |
Pavel Emelyanov | c0636fa | 2011-12-30 00:53:32 +0000 | [diff] [blame] | 143 | if (ext & (1 << (INET_DIAG_SKMEMINFO - 1))) |
| 144 | if (sock_diag_put_meminfo(sk, skb, INET_DIAG_SKMEMINFO)) |
| 145 | goto rtattr_failure; |
| 146 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 147 | if (icsk == NULL) { |
Shan Wei | 62ad6fc | 2012-04-24 18:15:41 +0000 | [diff] [blame] | 148 | handler->idiag_get_info(sk, r, NULL); |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 149 | goto out; |
| 150 | } |
| 151 | |
Ilpo Järvinen | 172589c | 2007-08-28 15:50:33 -0700 | [diff] [blame] | 152 | #define EXPIRES_IN_MS(tmo) DIV_ROUND_UP((tmo - jiffies) * 1000, HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 154 | if (icsk->icsk_pending == ICSK_TIME_RETRANS) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 155 | r->idiag_timer = 1; |
| 156 | r->idiag_retrans = icsk->icsk_retransmits; |
| 157 | r->idiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout); |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 158 | } else if (icsk->icsk_pending == ICSK_TIME_PROBE0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 159 | r->idiag_timer = 4; |
| 160 | r->idiag_retrans = icsk->icsk_probes_out; |
| 161 | r->idiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | } else if (timer_pending(&sk->sk_timer)) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 163 | r->idiag_timer = 2; |
| 164 | r->idiag_retrans = icsk->icsk_probes_out; |
| 165 | r->idiag_expires = EXPIRES_IN_MS(sk->sk_timer.expires); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } else { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 167 | r->idiag_timer = 0; |
| 168 | r->idiag_expires = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | } |
| 170 | #undef EXPIRES_IN_MS |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 171 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 172 | if (ext & (1 << (INET_DIAG_INFO - 1))) |
| 173 | info = INET_DIAG_PUT(skb, INET_DIAG_INFO, sizeof(struct tcp_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 175 | if ((ext & (1 << (INET_DIAG_CONG - 1))) && icsk->icsk_ca_ops) { |
| 176 | const size_t len = strlen(icsk->icsk_ca_ops->name); |
| 177 | |
| 178 | strcpy(INET_DIAG_PUT(skb, INET_DIAG_CONG, len + 1), |
| 179 | icsk->icsk_ca_ops->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | } |
| 181 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 182 | handler->idiag_get_info(sk, r, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
Arnaldo Carvalho de Melo | 6687e98 | 2005-08-10 04:03:31 -0300 | [diff] [blame] | 184 | if (sk->sk_state < TCP_TIME_WAIT && |
| 185 | icsk->icsk_ca_ops && icsk->icsk_ca_ops->get_info) |
| 186 | icsk->icsk_ca_ops->get_info(sk, ext, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 188 | out: |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 189 | nlh->nlmsg_len = skb_tail_pointer(skb) - b; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | return skb->len; |
| 191 | |
Stephen Hemminger | 7c99c90 | 2005-06-23 12:20:36 -0700 | [diff] [blame] | 192 | rtattr_failure: |
Arnaldo Carvalho de Melo | dc5fc57 | 2007-03-25 23:06:12 -0700 | [diff] [blame] | 193 | nlmsg_trim(skb, b); |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 194 | return -EMSGSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | } |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 196 | EXPORT_SYMBOL_GPL(inet_sk_diag_fill); |
| 197 | |
| 198 | static int inet_csk_diag_fill(struct sock *sk, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 199 | struct sk_buff *skb, struct inet_diag_req_v2 *req, |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 200 | u32 pid, u32 seq, u16 nlmsg_flags, |
| 201 | const struct nlmsghdr *unlh) |
| 202 | { |
| 203 | return inet_sk_diag_fill(sk, inet_csk(sk), |
| 204 | skb, req, pid, seq, nlmsg_flags, unlh); |
| 205 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 207 | static int inet_twsk_diag_fill(struct inet_timewait_sock *tw, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 208 | struct sk_buff *skb, struct inet_diag_req_v2 *req, |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 209 | u32 pid, u32 seq, u16 nlmsg_flags, |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 210 | const struct nlmsghdr *unlh) |
| 211 | { |
| 212 | long tmo; |
| 213 | struct inet_diag_msg *r; |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 214 | const unsigned char *previous_tail = skb_tail_pointer(skb); |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 215 | struct nlmsghdr *nlh = nlmsg_put(skb, pid, seq, |
| 216 | unlh->nlmsg_type, sizeof(*r), 0); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 217 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 218 | if (!nlh) { |
| 219 | nlmsg_trim(skb, previous_tail); |
| 220 | return -EMSGSIZE; |
| 221 | } |
| 222 | |
| 223 | r = nlmsg_data(nlh); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 224 | BUG_ON(tw->tw_state != TCP_TIME_WAIT); |
| 225 | |
| 226 | nlh->nlmsg_flags = nlmsg_flags; |
| 227 | |
| 228 | tmo = tw->tw_ttd - jiffies; |
| 229 | if (tmo < 0) |
| 230 | tmo = 0; |
| 231 | |
| 232 | r->idiag_family = tw->tw_family; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 233 | r->idiag_retrans = 0; |
| 234 | r->id.idiag_if = tw->tw_bound_dev_if; |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 235 | sock_diag_save_cookie(tw, r->id.idiag_cookie); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 236 | r->id.idiag_sport = tw->tw_sport; |
| 237 | r->id.idiag_dport = tw->tw_dport; |
| 238 | r->id.idiag_src[0] = tw->tw_rcv_saddr; |
| 239 | r->id.idiag_dst[0] = tw->tw_daddr; |
| 240 | r->idiag_state = tw->tw_substate; |
| 241 | r->idiag_timer = 3; |
Ilpo Järvinen | 172589c | 2007-08-28 15:50:33 -0700 | [diff] [blame] | 242 | r->idiag_expires = DIV_ROUND_UP(tmo * 1000, HZ); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 243 | r->idiag_rqueue = 0; |
| 244 | r->idiag_wqueue = 0; |
| 245 | r->idiag_uid = 0; |
| 246 | r->idiag_inode = 0; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 247 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 248 | if (tw->tw_family == AF_INET6) { |
| 249 | const struct inet6_timewait_sock *tw6 = |
| 250 | inet6_twsk((struct sock *)tw); |
| 251 | |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 252 | *(struct in6_addr *)r->id.idiag_src = tw6->tw_v6_rcv_saddr; |
| 253 | *(struct in6_addr *)r->id.idiag_dst = tw6->tw_v6_daddr; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 254 | } |
| 255 | #endif |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 256 | nlh->nlmsg_len = skb_tail_pointer(skb) - previous_tail; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 257 | return skb->len; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 258 | } |
| 259 | |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 260 | static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 261 | struct inet_diag_req_v2 *r, u32 pid, u32 seq, u16 nlmsg_flags, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 262 | const struct nlmsghdr *unlh) |
| 263 | { |
| 264 | if (sk->sk_state == TCP_TIME_WAIT) |
| 265 | return inet_twsk_diag_fill((struct inet_timewait_sock *)sk, |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 266 | skb, r, pid, seq, nlmsg_flags, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 267 | unlh); |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 268 | return inet_csk_diag_fill(sk, skb, r, pid, seq, nlmsg_flags, unlh); |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 269 | } |
| 270 | |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 271 | int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 272 | const struct nlmsghdr *nlh, struct inet_diag_req_v2 *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | { |
| 274 | int err; |
| 275 | struct sock *sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | struct sk_buff *rep; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 277 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 278 | err = -EINVAL; |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 279 | if (req->sdiag_family == AF_INET) { |
Pavel Emelyanov | c67499c | 2008-01-31 05:06:40 -0800 | [diff] [blame] | 280 | sk = inet_lookup(&init_net, hashinfo, req->id.idiag_dst[0], |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 281 | req->id.idiag_dport, req->id.idiag_src[0], |
| 282 | req->id.idiag_sport, req->id.idiag_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | } |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 284 | #if IS_ENABLED(CONFIG_IPV6) |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 285 | else if (req->sdiag_family == AF_INET6) { |
Pavel Emelyanov | d86e0da | 2008-01-31 05:07:21 -0800 | [diff] [blame] | 286 | sk = inet6_lookup(&init_net, hashinfo, |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 287 | (struct in6_addr *)req->id.idiag_dst, |
| 288 | req->id.idiag_dport, |
| 289 | (struct in6_addr *)req->id.idiag_src, |
| 290 | req->id.idiag_sport, |
| 291 | req->id.idiag_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | #endif |
| 294 | else { |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 295 | goto out_nosk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | } |
| 297 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 298 | err = -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | if (sk == NULL) |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 300 | goto out_nosk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 302 | err = sock_diag_check_cookie(sk, req->id.idiag_cookie); |
Pavel Emelyanov | b005ab4 | 2011-12-09 06:21:53 +0000 | [diff] [blame] | 303 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | goto out; |
| 305 | |
| 306 | err = -ENOMEM; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 307 | rep = alloc_skb(NLMSG_SPACE((sizeof(struct inet_diag_msg) + |
| 308 | sizeof(struct inet_diag_meminfo) + |
Pavel Emelyanov | 7b35ead | 2011-12-09 06:21:16 +0000 | [diff] [blame] | 309 | sizeof(struct tcp_info) + 64)), |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 310 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | if (!rep) |
| 312 | goto out; |
| 313 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 314 | err = sk_diag_fill(sk, rep, req, |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 315 | NETLINK_CB(in_skb).pid, |
| 316 | nlh->nlmsg_seq, 0, nlh); |
| 317 | if (err < 0) { |
| 318 | WARN_ON(err == -EMSGSIZE); |
| 319 | kfree_skb(rep); |
| 320 | goto out; |
| 321 | } |
Pavel Emelyanov | 8ef874b | 2011-12-06 07:59:52 +0000 | [diff] [blame] | 322 | err = netlink_unicast(sock_diag_nlsk, rep, NETLINK_CB(in_skb).pid, |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 323 | MSG_DONTWAIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | if (err > 0) |
| 325 | err = 0; |
| 326 | |
| 327 | out: |
| 328 | if (sk) { |
| 329 | if (sk->sk_state == TCP_TIME_WAIT) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 330 | inet_twsk_put((struct inet_timewait_sock *)sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | else |
| 332 | sock_put(sk); |
| 333 | } |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 334 | out_nosk: |
| 335 | return err; |
| 336 | } |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 337 | EXPORT_SYMBOL_GPL(inet_diag_dump_one_icsk); |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 338 | |
| 339 | static int inet_diag_get_exact(struct sk_buff *in_skb, |
| 340 | const struct nlmsghdr *nlh, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 341 | struct inet_diag_req_v2 *req) |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 342 | { |
| 343 | const struct inet_diag_handler *handler; |
| 344 | int err; |
| 345 | |
| 346 | handler = inet_diag_lock_handler(req->sdiag_protocol); |
| 347 | if (IS_ERR(handler)) |
| 348 | err = PTR_ERR(handler); |
| 349 | else |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 350 | err = handler->dump_one(in_skb, nlh, req); |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 351 | inet_diag_unlock_handler(handler); |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 352 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | return err; |
| 354 | } |
| 355 | |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 356 | static int bitstring_match(const __be32 *a1, const __be32 *a2, int bits) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | { |
| 358 | int words = bits >> 5; |
| 359 | |
| 360 | bits &= 0x1f; |
| 361 | |
| 362 | if (words) { |
| 363 | if (memcmp(a1, a2, words << 2)) |
| 364 | return 0; |
| 365 | } |
| 366 | if (bits) { |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 367 | __be32 w1, w2; |
| 368 | __be32 mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
| 370 | w1 = a1[words]; |
| 371 | w2 = a2[words]; |
| 372 | |
| 373 | mask = htonl((0xffffffff) << (32 - bits)); |
| 374 | |
| 375 | if ((w1 ^ w2) & mask) |
| 376 | return 0; |
| 377 | } |
| 378 | |
| 379 | return 1; |
| 380 | } |
| 381 | |
| 382 | |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 383 | static int inet_diag_bc_run(const struct nlattr *_bc, |
| 384 | const struct inet_diag_entry *entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | { |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 386 | const void *bc = nla_data(_bc); |
| 387 | int len = nla_len(_bc); |
| 388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | while (len > 0) { |
| 390 | int yes = 1; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 391 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
| 393 | switch (op->code) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 394 | case INET_DIAG_BC_NOP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 396 | case INET_DIAG_BC_JMP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | yes = 0; |
| 398 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 399 | case INET_DIAG_BC_S_GE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | yes = entry->sport >= op[1].no; |
| 401 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 402 | case INET_DIAG_BC_S_LE: |
Roel Kluin | b4ced2b | 2010-01-19 14:12:20 -0800 | [diff] [blame] | 403 | yes = entry->sport <= op[1].no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 405 | case INET_DIAG_BC_D_GE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | yes = entry->dport >= op[1].no; |
| 407 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 408 | case INET_DIAG_BC_D_LE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | yes = entry->dport <= op[1].no; |
| 410 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 411 | case INET_DIAG_BC_AUTO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | yes = !(entry->userlocks & SOCK_BINDPORT_LOCK); |
| 413 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 414 | case INET_DIAG_BC_S_COND: |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 415 | case INET_DIAG_BC_D_COND: { |
| 416 | struct inet_diag_hostcond *cond; |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 417 | __be32 *addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 419 | cond = (struct inet_diag_hostcond *)(op + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | if (cond->port != -1 && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 421 | cond->port != (op->code == INET_DIAG_BC_S_COND ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | entry->sport : entry->dport)) { |
| 423 | yes = 0; |
| 424 | break; |
| 425 | } |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | if (cond->prefix_len == 0) |
| 428 | break; |
| 429 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 430 | if (op->code == INET_DIAG_BC_S_COND) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | addr = entry->saddr; |
| 432 | else |
| 433 | addr = entry->daddr; |
| 434 | |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 435 | if (bitstring_match(addr, cond->addr, |
| 436 | cond->prefix_len)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | break; |
| 438 | if (entry->family == AF_INET6 && |
| 439 | cond->family == AF_INET) { |
| 440 | if (addr[0] == 0 && addr[1] == 0 && |
| 441 | addr[2] == htonl(0xffff) && |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 442 | bitstring_match(addr + 3, cond->addr, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 443 | cond->prefix_len)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | break; |
| 445 | } |
| 446 | yes = 0; |
| 447 | break; |
| 448 | } |
| 449 | } |
| 450 | |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 451 | if (yes) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | len -= op->yes; |
| 453 | bc += op->yes; |
| 454 | } else { |
| 455 | len -= op->no; |
| 456 | bc += op->no; |
| 457 | } |
| 458 | } |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 459 | return len == 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | } |
| 461 | |
Pavel Emelyanov | 8d07d15 | 2011-12-09 06:22:44 +0000 | [diff] [blame] | 462 | int inet_diag_bc_sk(const struct nlattr *bc, struct sock *sk) |
| 463 | { |
| 464 | struct inet_diag_entry entry; |
| 465 | struct inet_sock *inet = inet_sk(sk); |
| 466 | |
| 467 | if (bc == NULL) |
| 468 | return 1; |
| 469 | |
| 470 | entry.family = sk->sk_family; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 471 | #if IS_ENABLED(CONFIG_IPV6) |
Pavel Emelyanov | 8d07d15 | 2011-12-09 06:22:44 +0000 | [diff] [blame] | 472 | if (entry.family == AF_INET6) { |
| 473 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 474 | |
| 475 | entry.saddr = np->rcv_saddr.s6_addr32; |
| 476 | entry.daddr = np->daddr.s6_addr32; |
| 477 | } else |
| 478 | #endif |
| 479 | { |
| 480 | entry.saddr = &inet->inet_rcv_saddr; |
| 481 | entry.daddr = &inet->inet_daddr; |
| 482 | } |
| 483 | entry.sport = inet->inet_num; |
| 484 | entry.dport = ntohs(inet->inet_dport); |
| 485 | entry.userlocks = sk->sk_userlocks; |
| 486 | |
| 487 | return inet_diag_bc_run(bc, &entry); |
| 488 | } |
| 489 | EXPORT_SYMBOL_GPL(inet_diag_bc_sk); |
| 490 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | static int valid_cc(const void *bc, int len, int cc) |
| 492 | { |
| 493 | while (len >= 0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 494 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | if (cc > len) |
| 497 | return 0; |
| 498 | if (cc == len) |
| 499 | return 1; |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 500 | if (op->yes < 4 || op->yes & 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | return 0; |
| 502 | len -= op->yes; |
| 503 | bc += op->yes; |
| 504 | } |
| 505 | return 0; |
| 506 | } |
| 507 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 508 | static int inet_diag_bc_audit(const void *bytecode, int bytecode_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | { |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 510 | const void *bc = bytecode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | int len = bytecode_len; |
| 512 | |
| 513 | while (len > 0) { |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 514 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
| 516 | //printk("BC: %d %d %d {%d} / %d\n", op->code, op->yes, op->no, op[1].no, len); |
| 517 | switch (op->code) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 518 | case INET_DIAG_BC_AUTO: |
| 519 | case INET_DIAG_BC_S_COND: |
| 520 | case INET_DIAG_BC_D_COND: |
| 521 | case INET_DIAG_BC_S_GE: |
| 522 | case INET_DIAG_BC_S_LE: |
| 523 | case INET_DIAG_BC_D_GE: |
| 524 | case INET_DIAG_BC_D_LE: |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 525 | case INET_DIAG_BC_JMP: |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 526 | if (op->no < 4 || op->no > len + 4 || op->no & 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | return -EINVAL; |
| 528 | if (op->no < len && |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 529 | !valid_cc(bytecode, bytecode_len, len - op->no)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | return -EINVAL; |
| 531 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 532 | case INET_DIAG_BC_NOP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | break; |
| 534 | default: |
| 535 | return -EINVAL; |
| 536 | } |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 537 | if (op->yes < 4 || op->yes > len + 4 || op->yes & 3) |
| 538 | return -EINVAL; |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 539 | bc += op->yes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | len -= op->yes; |
| 541 | } |
| 542 | return len == 0 ? 0 : -EINVAL; |
| 543 | } |
| 544 | |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 545 | static int inet_csk_diag_dump(struct sock *sk, |
| 546 | struct sk_buff *skb, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 547 | struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 548 | struct inet_diag_req_v2 *r, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 549 | const struct nlattr *bc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | { |
Pavel Emelyanov | 8d07d15 | 2011-12-09 06:22:44 +0000 | [diff] [blame] | 551 | if (!inet_diag_bc_sk(bc, sk)) |
| 552 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 554 | return inet_csk_diag_fill(sk, skb, r, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 555 | NETLINK_CB(cb->skb).pid, |
| 556 | cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | } |
| 558 | |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 559 | static int inet_twsk_diag_dump(struct inet_timewait_sock *tw, |
| 560 | struct sk_buff *skb, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 561 | struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 562 | struct inet_diag_req_v2 *r, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 563 | const struct nlattr *bc) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 564 | { |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 565 | if (bc != NULL) { |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 566 | struct inet_diag_entry entry; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 567 | |
| 568 | entry.family = tw->tw_family; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 569 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 570 | if (tw->tw_family == AF_INET6) { |
| 571 | struct inet6_timewait_sock *tw6 = |
| 572 | inet6_twsk((struct sock *)tw); |
| 573 | entry.saddr = tw6->tw_v6_rcv_saddr.s6_addr32; |
| 574 | entry.daddr = tw6->tw_v6_daddr.s6_addr32; |
| 575 | } else |
| 576 | #endif |
| 577 | { |
| 578 | entry.saddr = &tw->tw_rcv_saddr; |
| 579 | entry.daddr = &tw->tw_daddr; |
| 580 | } |
| 581 | entry.sport = tw->tw_num; |
| 582 | entry.dport = ntohs(tw->tw_dport); |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 583 | entry.userlocks = 0; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 584 | |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 585 | if (!inet_diag_bc_run(bc, &entry)) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 586 | return 0; |
| 587 | } |
| 588 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 589 | return inet_twsk_diag_fill(tw, skb, r, |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 590 | NETLINK_CB(cb->skb).pid, |
| 591 | cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh); |
| 592 | } |
| 593 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 594 | static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 595 | struct request_sock *req, u32 pid, u32 seq, |
| 596 | const struct nlmsghdr *unlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 598 | const struct inet_request_sock *ireq = inet_rsk(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | struct inet_sock *inet = inet_sk(sk); |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 600 | unsigned char *b = skb_tail_pointer(skb); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 601 | struct inet_diag_msg *r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | struct nlmsghdr *nlh; |
| 603 | long tmo; |
| 604 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 605 | nlh = nlmsg_put(skb, pid, seq, unlh->nlmsg_type, sizeof(*r), 0); |
| 606 | if (!nlh) { |
| 607 | nlmsg_trim(skb, b); |
| 608 | return -1; |
| 609 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | nlh->nlmsg_flags = NLM_F_MULTI; |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 611 | r = nlmsg_data(nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 613 | r->idiag_family = sk->sk_family; |
| 614 | r->idiag_state = TCP_SYN_RECV; |
| 615 | r->idiag_timer = 1; |
| 616 | r->idiag_retrans = req->retrans; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 618 | r->id.idiag_if = sk->sk_bound_dev_if; |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 619 | sock_diag_save_cookie(req, r->id.idiag_cookie); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
| 621 | tmo = req->expires - jiffies; |
| 622 | if (tmo < 0) |
| 623 | tmo = 0; |
| 624 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 625 | r->id.idiag_sport = inet->inet_sport; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 626 | r->id.idiag_dport = ireq->rmt_port; |
| 627 | r->id.idiag_src[0] = ireq->loc_addr; |
| 628 | r->id.idiag_dst[0] = ireq->rmt_addr; |
| 629 | r->idiag_expires = jiffies_to_msecs(tmo); |
| 630 | r->idiag_rqueue = 0; |
| 631 | r->idiag_wqueue = 0; |
| 632 | r->idiag_uid = sock_i_uid(sk); |
| 633 | r->idiag_inode = 0; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 634 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 635 | if (r->idiag_family == AF_INET6) { |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 636 | *(struct in6_addr *)r->id.idiag_src = inet6_rsk(req)->loc_addr; |
| 637 | *(struct in6_addr *)r->id.idiag_dst = inet6_rsk(req)->rmt_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | } |
| 639 | #endif |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 640 | nlh->nlmsg_len = skb_tail_pointer(skb) - b; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | |
| 642 | return skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | } |
| 644 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 645 | static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 646 | struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 647 | struct inet_diag_req_v2 *r, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 648 | const struct nlattr *bc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 650 | struct inet_diag_entry entry; |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 651 | struct inet_connection_sock *icsk = inet_csk(sk); |
Arnaldo Carvalho de Melo | 2ad69c5 | 2005-06-18 22:48:55 -0700 | [diff] [blame] | 652 | struct listen_sock *lopt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | struct inet_sock *inet = inet_sk(sk); |
| 654 | int j, s_j; |
| 655 | int reqnum, s_reqnum; |
| 656 | int err = 0; |
| 657 | |
| 658 | s_j = cb->args[3]; |
| 659 | s_reqnum = cb->args[4]; |
| 660 | |
| 661 | if (s_j > 0) |
| 662 | s_j--; |
| 663 | |
| 664 | entry.family = sk->sk_family; |
| 665 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 666 | read_lock_bh(&icsk->icsk_accept_queue.syn_wait_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 668 | lopt = icsk->icsk_accept_queue.listen_opt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | if (!lopt || !lopt->qlen) |
| 670 | goto out; |
| 671 | |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 672 | if (bc != NULL) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 673 | entry.sport = inet->inet_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | entry.userlocks = sk->sk_userlocks; |
| 675 | } |
| 676 | |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 677 | for (j = s_j; j < lopt->nr_table_entries; j++) { |
Arnaldo Carvalho de Melo | 60236fd | 2005-06-18 22:47:21 -0700 | [diff] [blame] | 678 | struct request_sock *req, *head = lopt->syn_table[j]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
| 680 | reqnum = 0; |
| 681 | for (req = head; req; reqnum++, req = req->dl_next) { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 682 | struct inet_request_sock *ireq = inet_rsk(req); |
| 683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | if (reqnum < s_reqnum) |
| 685 | continue; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 686 | if (r->id.idiag_dport != ireq->rmt_port && |
| 687 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | continue; |
| 689 | |
| 690 | if (bc) { |
| 691 | entry.saddr = |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 692 | #if IS_ENABLED(CONFIG_IPV6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | (entry.family == AF_INET6) ? |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 694 | inet6_rsk(req)->loc_addr.s6_addr32 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | #endif |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 696 | &ireq->loc_addr; |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 697 | entry.daddr = |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 698 | #if IS_ENABLED(CONFIG_IPV6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | (entry.family == AF_INET6) ? |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 700 | inet6_rsk(req)->rmt_addr.s6_addr32 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | #endif |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 702 | &ireq->rmt_addr; |
| 703 | entry.dport = ntohs(ireq->rmt_port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 705 | if (!inet_diag_bc_run(bc, &entry)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | continue; |
| 707 | } |
| 708 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 709 | err = inet_diag_fill_req(skb, sk, req, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | NETLINK_CB(cb->skb).pid, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 711 | cb->nlh->nlmsg_seq, cb->nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | if (err < 0) { |
| 713 | cb->args[3] = j + 1; |
| 714 | cb->args[4] = reqnum; |
| 715 | goto out; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | s_reqnum = 0; |
| 720 | } |
| 721 | |
| 722 | out: |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 723 | read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
| 725 | return err; |
| 726 | } |
| 727 | |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 728 | void inet_diag_dump_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *skb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 729 | struct netlink_callback *cb, struct inet_diag_req_v2 *r, struct nlattr *bc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | { |
| 731 | int i, num; |
| 732 | int s_i, s_num; |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 733 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | s_i = cb->args[1]; |
| 735 | s_num = num = cb->args[2]; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 736 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | if (cb->args[0] == 0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 738 | if (!(r->idiag_states & (TCPF_LISTEN | TCPF_SYN_RECV))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | goto skip_listen_ht; |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 740 | |
Arnaldo Carvalho de Melo | 0f7ff92 | 2005-08-09 19:59:44 -0700 | [diff] [blame] | 741 | for (i = s_i; i < INET_LHTABLE_SIZE; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | struct sock *sk; |
Eric Dumazet | c25eb3b | 2008-11-23 17:22:55 -0800 | [diff] [blame] | 743 | struct hlist_nulls_node *node; |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 744 | struct inet_listen_hashbucket *ilb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | |
| 746 | num = 0; |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 747 | ilb = &hashinfo->listening_hash[i]; |
| 748 | spin_lock_bh(&ilb->lock); |
Eric Dumazet | c25eb3b | 2008-11-23 17:22:55 -0800 | [diff] [blame] | 749 | sk_nulls_for_each(sk, node, &ilb->head) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | struct inet_sock *inet = inet_sk(sk); |
| 751 | |
| 752 | if (num < s_num) { |
| 753 | num++; |
| 754 | continue; |
| 755 | } |
| 756 | |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 757 | if (r->sdiag_family != AF_UNSPEC && |
| 758 | sk->sk_family != r->sdiag_family) |
| 759 | goto next_listen; |
| 760 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 761 | if (r->id.idiag_sport != inet->inet_sport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 762 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | goto next_listen; |
| 764 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 765 | if (!(r->idiag_states & TCPF_LISTEN) || |
| 766 | r->id.idiag_dport || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | cb->args[3] > 0) |
| 768 | goto syn_recv; |
| 769 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 770 | if (inet_csk_diag_dump(sk, skb, cb, r, bc) < 0) { |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 771 | spin_unlock_bh(&ilb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | goto done; |
| 773 | } |
| 774 | |
| 775 | syn_recv: |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 776 | if (!(r->idiag_states & TCPF_SYN_RECV)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | goto next_listen; |
| 778 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 779 | if (inet_diag_dump_reqs(skb, sk, cb, r, bc) < 0) { |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 780 | spin_unlock_bh(&ilb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | goto done; |
| 782 | } |
| 783 | |
| 784 | next_listen: |
| 785 | cb->args[3] = 0; |
| 786 | cb->args[4] = 0; |
| 787 | ++num; |
| 788 | } |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 789 | spin_unlock_bh(&ilb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
| 791 | s_num = 0; |
| 792 | cb->args[3] = 0; |
| 793 | cb->args[4] = 0; |
| 794 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | skip_listen_ht: |
| 796 | cb->args[0] = 1; |
| 797 | s_i = num = s_num = 0; |
| 798 | } |
| 799 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 800 | if (!(r->idiag_states & ~(TCPF_LISTEN | TCPF_SYN_RECV))) |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 801 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
Eric Dumazet | f373b53 | 2009-10-09 00:16:19 +0000 | [diff] [blame] | 803 | for (i = s_i; i <= hashinfo->ehash_mask; i++) { |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 804 | struct inet_ehash_bucket *head = &hashinfo->ehash[i]; |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 805 | spinlock_t *lock = inet_ehash_lockp(hashinfo, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | struct sock *sk; |
Eric Dumazet | 3ab5aee | 2008-11-16 19:40:17 -0800 | [diff] [blame] | 807 | struct hlist_nulls_node *node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | |
Andi Kleen | 6be547a | 2008-08-28 01:09:54 -0700 | [diff] [blame] | 809 | num = 0; |
| 810 | |
Eric Dumazet | 3ab5aee | 2008-11-16 19:40:17 -0800 | [diff] [blame] | 811 | if (hlist_nulls_empty(&head->chain) && |
| 812 | hlist_nulls_empty(&head->twchain)) |
Andi Kleen | 6be547a | 2008-08-28 01:09:54 -0700 | [diff] [blame] | 813 | continue; |
| 814 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | if (i > s_i) |
| 816 | s_num = 0; |
| 817 | |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 818 | spin_lock_bh(lock); |
Eric Dumazet | 3ab5aee | 2008-11-16 19:40:17 -0800 | [diff] [blame] | 819 | sk_nulls_for_each(sk, node, &head->chain) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | struct inet_sock *inet = inet_sk(sk); |
| 821 | |
| 822 | if (num < s_num) |
| 823 | goto next_normal; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 824 | if (!(r->idiag_states & (1 << sk->sk_state))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | goto next_normal; |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 826 | if (r->sdiag_family != AF_UNSPEC && |
| 827 | sk->sk_family != r->sdiag_family) |
| 828 | goto next_normal; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 829 | if (r->id.idiag_sport != inet->inet_sport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 830 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | goto next_normal; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 832 | if (r->id.idiag_dport != inet->inet_dport && |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 833 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | goto next_normal; |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 835 | if (inet_csk_diag_dump(sk, skb, cb, r, bc) < 0) { |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 836 | spin_unlock_bh(lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | goto done; |
| 838 | } |
| 839 | next_normal: |
| 840 | ++num; |
| 841 | } |
| 842 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 843 | if (r->idiag_states & TCPF_TIME_WAIT) { |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 844 | struct inet_timewait_sock *tw; |
| 845 | |
| 846 | inet_twsk_for_each(tw, node, |
Eric Dumazet | dbca9b275 | 2007-02-08 14:16:46 -0800 | [diff] [blame] | 847 | &head->twchain) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | |
| 849 | if (num < s_num) |
| 850 | goto next_dying; |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 851 | if (r->sdiag_family != AF_UNSPEC && |
| 852 | tw->tw_family != r->sdiag_family) |
| 853 | goto next_dying; |
Arnaldo Carvalho de Melo | 7dbf075 | 2006-01-09 14:56:03 -0800 | [diff] [blame] | 854 | if (r->id.idiag_sport != tw->tw_sport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 855 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | goto next_dying; |
Arnaldo Carvalho de Melo | 7dbf075 | 2006-01-09 14:56:03 -0800 | [diff] [blame] | 857 | if (r->id.idiag_dport != tw->tw_dport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 858 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | goto next_dying; |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 860 | if (inet_twsk_diag_dump(tw, skb, cb, r, bc) < 0) { |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 861 | spin_unlock_bh(lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | goto done; |
| 863 | } |
| 864 | next_dying: |
| 865 | ++num; |
| 866 | } |
| 867 | } |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 868 | spin_unlock_bh(lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | } |
| 870 | |
| 871 | done: |
| 872 | cb->args[1] = i; |
| 873 | cb->args[2] = num; |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 874 | out: |
| 875 | ; |
| 876 | } |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 877 | EXPORT_SYMBOL_GPL(inet_diag_dump_icsk); |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 878 | |
| 879 | static int __inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 880 | struct inet_diag_req_v2 *r, struct nlattr *bc) |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 881 | { |
| 882 | const struct inet_diag_handler *handler; |
| 883 | |
| 884 | handler = inet_diag_lock_handler(r->sdiag_protocol); |
| 885 | if (!IS_ERR(handler)) |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 886 | handler->dump(skb, cb, r, bc); |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 887 | inet_diag_unlock_handler(handler); |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 888 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | return skb->len; |
| 890 | } |
| 891 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 892 | static int inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 893 | { |
| 894 | struct nlattr *bc = NULL; |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 895 | int hdrlen = sizeof(struct inet_diag_req_v2); |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 896 | |
| 897 | if (nlmsg_attrlen(cb->nlh, hdrlen)) |
| 898 | bc = nlmsg_find_attr(cb->nlh, hdrlen, INET_DIAG_REQ_BYTECODE); |
| 899 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 900 | return __inet_diag_dump(skb, cb, nlmsg_data(cb->nlh), bc); |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 901 | } |
| 902 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 903 | static inline int inet_diag_type2proto(int type) |
| 904 | { |
| 905 | switch (type) { |
| 906 | case TCPDIAG_GETSOCK: |
| 907 | return IPPROTO_TCP; |
| 908 | case DCCPDIAG_GETSOCK: |
| 909 | return IPPROTO_DCCP; |
| 910 | default: |
| 911 | return 0; |
| 912 | } |
| 913 | } |
| 914 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 915 | static int inet_diag_dump_compat(struct sk_buff *skb, struct netlink_callback *cb) |
| 916 | { |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 917 | struct inet_diag_req *rc = nlmsg_data(cb->nlh); |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 918 | struct inet_diag_req_v2 req; |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 919 | struct nlattr *bc = NULL; |
Pavel Emelyanov | 3b09c84 | 2012-01-10 22:37:26 +0000 | [diff] [blame] | 920 | int hdrlen = sizeof(struct inet_diag_req); |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 921 | |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 922 | req.sdiag_family = AF_UNSPEC; /* compatibility */ |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 923 | req.sdiag_protocol = inet_diag_type2proto(cb->nlh->nlmsg_type); |
| 924 | req.idiag_ext = rc->idiag_ext; |
| 925 | req.idiag_states = rc->idiag_states; |
| 926 | req.id = rc->id; |
| 927 | |
| 928 | if (nlmsg_attrlen(cb->nlh, hdrlen)) |
| 929 | bc = nlmsg_find_attr(cb->nlh, hdrlen, INET_DIAG_REQ_BYTECODE); |
| 930 | |
| 931 | return __inet_diag_dump(skb, cb, &req, bc); |
| 932 | } |
| 933 | |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 934 | static int inet_diag_get_exact_compat(struct sk_buff *in_skb, |
| 935 | const struct nlmsghdr *nlh) |
| 936 | { |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 937 | struct inet_diag_req *rc = nlmsg_data(nlh); |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 938 | struct inet_diag_req_v2 req; |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 939 | |
| 940 | req.sdiag_family = rc->idiag_family; |
| 941 | req.sdiag_protocol = inet_diag_type2proto(nlh->nlmsg_type); |
| 942 | req.idiag_ext = rc->idiag_ext; |
| 943 | req.idiag_states = rc->idiag_states; |
| 944 | req.id = rc->id; |
| 945 | |
| 946 | return inet_diag_get_exact(in_skb, nlh, &req); |
| 947 | } |
| 948 | |
Pavel Emelyanov | 8d34172 | 2011-12-06 07:57:06 +0000 | [diff] [blame] | 949 | static int inet_diag_rcv_msg_compat(struct sk_buff *skb, struct nlmsghdr *nlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | { |
Pavel Emelyanov | 3b09c84 | 2012-01-10 22:37:26 +0000 | [diff] [blame] | 951 | int hdrlen = sizeof(struct inet_diag_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | |
Thomas Graf | ead592b | 2007-03-22 23:30:35 -0700 | [diff] [blame] | 953 | if (nlh->nlmsg_type >= INET_DIAG_GETSOCK_MAX || |
| 954 | nlmsg_len(nlh) < hdrlen) |
| 955 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | |
David S. Miller | b8f3ab4 | 2011-01-18 12:40:38 -0800 | [diff] [blame] | 957 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
Thomas Graf | ead592b | 2007-03-22 23:30:35 -0700 | [diff] [blame] | 958 | if (nlmsg_attrlen(nlh, hdrlen)) { |
| 959 | struct nlattr *attr; |
| 960 | |
| 961 | attr = nlmsg_find_attr(nlh, hdrlen, |
| 962 | INET_DIAG_REQ_BYTECODE); |
| 963 | if (attr == NULL || |
| 964 | nla_len(attr) < sizeof(struct inet_diag_bc_op) || |
| 965 | inet_diag_bc_audit(nla_data(attr), nla_len(attr))) |
| 966 | return -EINVAL; |
| 967 | } |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 968 | { |
| 969 | struct netlink_dump_control c = { |
| 970 | .dump = inet_diag_dump_compat, |
| 971 | }; |
| 972 | return netlink_dump_start(sock_diag_nlsk, skb, nlh, &c); |
| 973 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | } |
Thomas Graf | ead592b | 2007-03-22 23:30:35 -0700 | [diff] [blame] | 975 | |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 976 | return inet_diag_get_exact_compat(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | } |
| 978 | |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 979 | static int inet_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h) |
| 980 | { |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 981 | int hdrlen = sizeof(struct inet_diag_req_v2); |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 982 | |
| 983 | if (nlmsg_len(h) < hdrlen) |
| 984 | return -EINVAL; |
| 985 | |
| 986 | if (h->nlmsg_flags & NLM_F_DUMP) { |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 987 | if (nlmsg_attrlen(h, hdrlen)) { |
| 988 | struct nlattr *attr; |
| 989 | attr = nlmsg_find_attr(h, hdrlen, |
| 990 | INET_DIAG_REQ_BYTECODE); |
| 991 | if (attr == NULL || |
| 992 | nla_len(attr) < sizeof(struct inet_diag_bc_op) || |
| 993 | inet_diag_bc_audit(nla_data(attr), nla_len(attr))) |
| 994 | return -EINVAL; |
| 995 | } |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 996 | { |
| 997 | struct netlink_dump_control c = { |
| 998 | .dump = inet_diag_dump, |
| 999 | }; |
| 1000 | return netlink_dump_start(sock_diag_nlsk, skb, h, &c); |
| 1001 | } |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1002 | } |
| 1003 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame^] | 1004 | return inet_diag_get_exact(skb, h, nlmsg_data(h)); |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1005 | } |
| 1006 | |
Shan Wei | 8dcf01f | 2012-04-24 18:21:07 +0000 | [diff] [blame] | 1007 | static const struct sock_diag_handler inet_diag_handler = { |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1008 | .family = AF_INET, |
| 1009 | .dump = inet_diag_handler_dump, |
| 1010 | }; |
| 1011 | |
Shan Wei | 8dcf01f | 2012-04-24 18:21:07 +0000 | [diff] [blame] | 1012 | static const struct sock_diag_handler inet6_diag_handler = { |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1013 | .family = AF_INET6, |
| 1014 | .dump = inet_diag_handler_dump, |
| 1015 | }; |
| 1016 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1017 | int inet_diag_register(const struct inet_diag_handler *h) |
| 1018 | { |
| 1019 | const __u16 type = h->idiag_type; |
| 1020 | int err = -EINVAL; |
| 1021 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 1022 | if (type >= IPPROTO_MAX) |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1023 | goto out; |
| 1024 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1025 | mutex_lock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1026 | err = -EEXIST; |
| 1027 | if (inet_diag_table[type] == NULL) { |
| 1028 | inet_diag_table[type] = h; |
| 1029 | err = 0; |
| 1030 | } |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1031 | mutex_unlock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1032 | out: |
| 1033 | return err; |
| 1034 | } |
| 1035 | EXPORT_SYMBOL_GPL(inet_diag_register); |
| 1036 | |
| 1037 | void inet_diag_unregister(const struct inet_diag_handler *h) |
| 1038 | { |
| 1039 | const __u16 type = h->idiag_type; |
| 1040 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 1041 | if (type >= IPPROTO_MAX) |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1042 | return; |
| 1043 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1044 | mutex_lock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1045 | inet_diag_table[type] = NULL; |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1046 | mutex_unlock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1047 | } |
| 1048 | EXPORT_SYMBOL_GPL(inet_diag_unregister); |
| 1049 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 1050 | static int __init inet_diag_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | { |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 1052 | const int inet_diag_table_size = (IPPROTO_MAX * |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1053 | sizeof(struct inet_diag_handler *)); |
| 1054 | int err = -ENOMEM; |
| 1055 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 1056 | inet_diag_table = kzalloc(inet_diag_table_size, GFP_KERNEL); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1057 | if (!inet_diag_table) |
| 1058 | goto out; |
| 1059 | |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1060 | err = sock_diag_register(&inet_diag_handler); |
| 1061 | if (err) |
| 1062 | goto out_free_nl; |
| 1063 | |
| 1064 | err = sock_diag_register(&inet6_diag_handler); |
| 1065 | if (err) |
| 1066 | goto out_free_inet; |
| 1067 | |
Pavel Emelyanov | 8ef874b | 2011-12-06 07:59:52 +0000 | [diff] [blame] | 1068 | sock_diag_register_inet_compat(inet_diag_rcv_msg_compat); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1069 | out: |
| 1070 | return err; |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1071 | |
| 1072 | out_free_inet: |
| 1073 | sock_diag_unregister(&inet_diag_handler); |
| 1074 | out_free_nl: |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1075 | kfree(inet_diag_table); |
| 1076 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | } |
| 1078 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 1079 | static void __exit inet_diag_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | { |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1081 | sock_diag_unregister(&inet6_diag_handler); |
| 1082 | sock_diag_unregister(&inet_diag_handler); |
Pavel Emelyanov | 8ef874b | 2011-12-06 07:59:52 +0000 | [diff] [blame] | 1083 | sock_diag_unregister_inet_compat(inet_diag_rcv_msg_compat); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1084 | kfree(inet_diag_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | } |
| 1086 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 1087 | module_init(inet_diag_init); |
| 1088 | module_exit(inet_diag_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | MODULE_LICENSE("GPL"); |
Pavel Emelyanov | aec8dc6 | 2011-12-15 02:43:27 +0000 | [diff] [blame] | 1090 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2 /* AF_INET */); |
| 1091 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 10 /* AF_INET6 */); |