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 | * |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 4 | * Version: $Id: inet_diag.c,v 1.3 2002/02/01 22:01:04 davem Exp $ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * |
| 6 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * as published by the Free Software Foundation; either version |
| 11 | * 2 of the License, or (at your option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/config.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/fcntl.h> |
| 18 | #include <linux/random.h> |
| 19 | #include <linux/cache.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/time.h> |
| 22 | |
| 23 | #include <net/icmp.h> |
| 24 | #include <net/tcp.h> |
| 25 | #include <net/ipv6.h> |
| 26 | #include <net/inet_common.h> |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 27 | #include <net/inet_connection_sock.h> |
| 28 | #include <net/inet_hashtables.h> |
| 29 | #include <net/inet_timewait_sock.h> |
| 30 | #include <net/inet6_hashtables.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 | |
| 35 | #include <linux/tcp_diag.h> |
| 36 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 37 | static const struct inet_diag_handler **inet_diag_table; |
| 38 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 39 | struct inet_diag_entry { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | u32 *saddr; |
| 41 | u32 *daddr; |
| 42 | u16 sport; |
| 43 | u16 dport; |
| 44 | u16 family; |
| 45 | u16 userlocks; |
| 46 | }; |
| 47 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 48 | static struct sock *idiagnl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 50 | #define INET_DIAG_PUT(skb, attrtype, attrlen) \ |
Stephen Hemminger | 7c99c90 | 2005-06-23 12:20:36 -0700 | [diff] [blame] | 51 | RTA_DATA(__RTA_PUT(skb, attrtype, attrlen)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 53 | static int inet_diag_fill(struct sk_buff *skb, struct sock *sk, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 54 | int ext, u32 pid, u32 seq, u16 nlmsg_flags, |
| 55 | const struct nlmsghdr *unlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 57 | const struct inet_sock *inet = inet_sk(sk); |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 58 | const struct inet_connection_sock *icsk = inet_csk(sk); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 59 | struct inet_diag_msg *r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | struct nlmsghdr *nlh; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 61 | void *info = NULL; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 62 | struct inet_diag_meminfo *minfo = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | unsigned char *b = skb->tail; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 64 | const struct inet_diag_handler *handler; |
| 65 | |
| 66 | handler = inet_diag_table[unlh->nlmsg_type]; |
| 67 | BUG_ON(handler == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 69 | nlh = NLMSG_PUT(skb, pid, seq, unlh->nlmsg_type, sizeof(*r)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | nlh->nlmsg_flags = nlmsg_flags; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | r = NLMSG_DATA(nlh); |
| 73 | if (sk->sk_state != TCP_TIME_WAIT) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 74 | if (ext & (1 << (INET_DIAG_MEMINFO - 1))) |
| 75 | minfo = INET_DIAG_PUT(skb, INET_DIAG_MEMINFO, |
| 76 | sizeof(*minfo)); |
| 77 | if (ext & (1 << (INET_DIAG_INFO - 1))) |
| 78 | info = INET_DIAG_PUT(skb, INET_DIAG_INFO, |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 79 | handler->idiag_info_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 81 | if ((ext & (1 << (INET_DIAG_CONG - 1))) && icsk->icsk_ca_ops) { |
Arnaldo Carvalho de Melo | 6687e98 | 2005-08-10 04:03:31 -0300 | [diff] [blame] | 82 | size_t len = strlen(icsk->icsk_ca_ops->name); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 83 | strcpy(INET_DIAG_PUT(skb, INET_DIAG_CONG, len + 1), |
Arnaldo Carvalho de Melo | 6687e98 | 2005-08-10 04:03:31 -0300 | [diff] [blame] | 84 | icsk->icsk_ca_ops->name); |
Stephen Hemminger | 056ede6 | 2005-06-23 12:21:28 -0700 | [diff] [blame] | 85 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | } |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 87 | r->idiag_family = sk->sk_family; |
| 88 | r->idiag_state = sk->sk_state; |
| 89 | r->idiag_timer = 0; |
| 90 | r->idiag_retrans = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 92 | r->id.idiag_if = sk->sk_bound_dev_if; |
| 93 | r->id.idiag_cookie[0] = (u32)(unsigned long)sk; |
| 94 | r->id.idiag_cookie[1] = (u32)(((unsigned long)sk >> 31) >> 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 96 | if (r->idiag_state == TCP_TIME_WAIT) { |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 97 | const struct inet_timewait_sock *tw = inet_twsk(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | long tmo = tw->tw_ttd - jiffies; |
| 99 | if (tmo < 0) |
| 100 | tmo = 0; |
| 101 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 102 | r->id.idiag_sport = tw->tw_sport; |
| 103 | r->id.idiag_dport = tw->tw_dport; |
| 104 | r->id.idiag_src[0] = tw->tw_rcv_saddr; |
| 105 | r->id.idiag_dst[0] = tw->tw_daddr; |
| 106 | r->idiag_state = tw->tw_substate; |
| 107 | r->idiag_timer = 3; |
| 108 | r->idiag_expires = (tmo * 1000 + HZ - 1) / HZ; |
| 109 | r->idiag_rqueue = 0; |
| 110 | r->idiag_wqueue = 0; |
| 111 | r->idiag_uid = 0; |
| 112 | r->idiag_inode = 0; |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 113 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 114 | if (r->idiag_family == AF_INET6) { |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 115 | const struct tcp6_timewait_sock *tcp6tw = tcp6_twsk(sk); |
| 116 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 117 | ipv6_addr_copy((struct in6_addr *)r->id.idiag_src, |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 118 | &tcp6tw->tw_v6_rcv_saddr); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 119 | ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst, |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 120 | &tcp6tw->tw_v6_daddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
| 122 | #endif |
| 123 | nlh->nlmsg_len = skb->tail - b; |
| 124 | return skb->len; |
| 125 | } |
| 126 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 127 | r->id.idiag_sport = inet->sport; |
| 128 | r->id.idiag_dport = inet->dport; |
| 129 | r->id.idiag_src[0] = inet->rcv_saddr; |
| 130 | r->id.idiag_dst[0] = inet->daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 132 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 133 | if (r->idiag_family == AF_INET6) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 135 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 136 | ipv6_addr_copy((struct in6_addr *)r->id.idiag_src, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | &np->rcv_saddr); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 138 | ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | &np->daddr); |
| 140 | } |
| 141 | #endif |
| 142 | |
| 143 | #define EXPIRES_IN_MS(tmo) ((tmo-jiffies)*1000+HZ-1)/HZ |
| 144 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 145 | if (icsk->icsk_pending == ICSK_TIME_RETRANS) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 146 | r->idiag_timer = 1; |
| 147 | r->idiag_retrans = icsk->icsk_retransmits; |
| 148 | r->idiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout); |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 149 | } else if (icsk->icsk_pending == ICSK_TIME_PROBE0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 150 | r->idiag_timer = 4; |
| 151 | r->idiag_retrans = icsk->icsk_probes_out; |
| 152 | r->idiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | } else if (timer_pending(&sk->sk_timer)) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 154 | r->idiag_timer = 2; |
| 155 | r->idiag_retrans = icsk->icsk_probes_out; |
| 156 | r->idiag_expires = EXPIRES_IN_MS(sk->sk_timer.expires); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } else { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 158 | r->idiag_timer = 0; |
| 159 | r->idiag_expires = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | } |
| 161 | #undef EXPIRES_IN_MS |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 162 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 163 | r->idiag_uid = sock_i_uid(sk); |
| 164 | r->idiag_inode = sock_i_ino(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | if (minfo) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 167 | minfo->idiag_rmem = atomic_read(&sk->sk_rmem_alloc); |
| 168 | minfo->idiag_wmem = sk->sk_wmem_queued; |
| 169 | minfo->idiag_fmem = sk->sk_forward_alloc; |
| 170 | minfo->idiag_tmem = atomic_read(&sk->sk_wmem_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | } |
| 172 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 173 | handler->idiag_get_info(sk, r, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Arnaldo Carvalho de Melo | 6687e98 | 2005-08-10 04:03:31 -0300 | [diff] [blame] | 175 | if (sk->sk_state < TCP_TIME_WAIT && |
| 176 | icsk->icsk_ca_ops && icsk->icsk_ca_ops->get_info) |
| 177 | icsk->icsk_ca_ops->get_info(sk, ext, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
| 179 | nlh->nlmsg_len = skb->tail - b; |
| 180 | return skb->len; |
| 181 | |
Stephen Hemminger | 7c99c90 | 2005-06-23 12:20:36 -0700 | [diff] [blame] | 182 | rtattr_failure: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | nlmsg_failure: |
| 184 | skb_trim(skb, b - skb->data); |
| 185 | return -1; |
| 186 | } |
| 187 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 188 | static int inet_diag_get_exact(struct sk_buff *in_skb, const struct nlmsghdr *nlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | { |
| 190 | int err; |
| 191 | struct sock *sk; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 192 | struct inet_diag_req *req = NLMSG_DATA(nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | struct sk_buff *rep; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 194 | struct inet_hashinfo *hashinfo; |
| 195 | const struct inet_diag_handler *handler; |
| 196 | |
| 197 | handler = inet_diag_table[nlh->nlmsg_type]; |
| 198 | BUG_ON(handler == NULL); |
| 199 | hashinfo = handler->idiag_hashinfo; |
| 200 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 201 | if (req->idiag_family == AF_INET) { |
| 202 | sk = inet_lookup(hashinfo, req->id.idiag_dst[0], |
| 203 | req->id.idiag_dport, req->id.idiag_src[0], |
| 204 | req->id.idiag_sport, req->id.idiag_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | } |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 206 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 207 | else if (req->idiag_family == AF_INET6) { |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 208 | sk = inet6_lookup(hashinfo, |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 209 | (struct in6_addr *)req->id.idiag_dst, |
| 210 | req->id.idiag_dport, |
| 211 | (struct in6_addr *)req->id.idiag_src, |
| 212 | req->id.idiag_sport, |
| 213 | req->id.idiag_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
| 215 | #endif |
| 216 | else { |
| 217 | return -EINVAL; |
| 218 | } |
| 219 | |
| 220 | if (sk == NULL) |
| 221 | return -ENOENT; |
| 222 | |
| 223 | err = -ESTALE; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 224 | if ((req->id.idiag_cookie[0] != INET_DIAG_NOCOOKIE || |
| 225 | req->id.idiag_cookie[1] != INET_DIAG_NOCOOKIE) && |
| 226 | ((u32)(unsigned long)sk != req->id.idiag_cookie[0] || |
| 227 | (u32)((((unsigned long)sk) >> 31) >> 1) != req->id.idiag_cookie[1])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | goto out; |
| 229 | |
| 230 | err = -ENOMEM; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 231 | rep = alloc_skb(NLMSG_SPACE((sizeof(struct inet_diag_msg) + |
| 232 | sizeof(struct inet_diag_meminfo) + |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 233 | handler->idiag_info_size + 64)), |
| 234 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | if (!rep) |
| 236 | goto out; |
| 237 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 238 | if (inet_diag_fill(rep, sk, req->idiag_ext, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | NETLINK_CB(in_skb).pid, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 240 | nlh->nlmsg_seq, 0, nlh) <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | BUG(); |
| 242 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 243 | err = netlink_unicast(idiagnl, rep, NETLINK_CB(in_skb).pid, |
| 244 | MSG_DONTWAIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | if (err > 0) |
| 246 | err = 0; |
| 247 | |
| 248 | out: |
| 249 | if (sk) { |
| 250 | if (sk->sk_state == TCP_TIME_WAIT) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 251 | inet_twsk_put((struct inet_timewait_sock *)sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | else |
| 253 | sock_put(sk); |
| 254 | } |
| 255 | return err; |
| 256 | } |
| 257 | |
| 258 | static int bitstring_match(const u32 *a1, const u32 *a2, int bits) |
| 259 | { |
| 260 | int words = bits >> 5; |
| 261 | |
| 262 | bits &= 0x1f; |
| 263 | |
| 264 | if (words) { |
| 265 | if (memcmp(a1, a2, words << 2)) |
| 266 | return 0; |
| 267 | } |
| 268 | if (bits) { |
| 269 | __u32 w1, w2; |
| 270 | __u32 mask; |
| 271 | |
| 272 | w1 = a1[words]; |
| 273 | w2 = a2[words]; |
| 274 | |
| 275 | mask = htonl((0xffffffff) << (32 - bits)); |
| 276 | |
| 277 | if ((w1 ^ w2) & mask) |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | return 1; |
| 282 | } |
| 283 | |
| 284 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 285 | static int inet_diag_bc_run(const void *bc, int len, |
| 286 | const struct inet_diag_entry *entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
| 288 | while (len > 0) { |
| 289 | int yes = 1; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 290 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
| 292 | switch (op->code) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 293 | case INET_DIAG_BC_NOP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 295 | case INET_DIAG_BC_JMP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | yes = 0; |
| 297 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 298 | case INET_DIAG_BC_S_GE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | yes = entry->sport >= op[1].no; |
| 300 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 301 | case INET_DIAG_BC_S_LE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | yes = entry->dport <= op[1].no; |
| 303 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 304 | case INET_DIAG_BC_D_GE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | yes = entry->dport >= op[1].no; |
| 306 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 307 | case INET_DIAG_BC_D_LE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | yes = entry->dport <= op[1].no; |
| 309 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 310 | case INET_DIAG_BC_AUTO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | yes = !(entry->userlocks & SOCK_BINDPORT_LOCK); |
| 312 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 313 | case INET_DIAG_BC_S_COND: |
| 314 | case INET_DIAG_BC_D_COND: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 316 | struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(op+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | u32 *addr; |
| 318 | |
| 319 | if (cond->port != -1 && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 320 | cond->port != (op->code == INET_DIAG_BC_S_COND ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | entry->sport : entry->dport)) { |
| 322 | yes = 0; |
| 323 | break; |
| 324 | } |
| 325 | |
| 326 | if (cond->prefix_len == 0) |
| 327 | break; |
| 328 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 329 | if (op->code == INET_DIAG_BC_S_COND) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | addr = entry->saddr; |
| 331 | else |
| 332 | addr = entry->daddr; |
| 333 | |
| 334 | if (bitstring_match(addr, cond->addr, cond->prefix_len)) |
| 335 | break; |
| 336 | if (entry->family == AF_INET6 && |
| 337 | cond->family == AF_INET) { |
| 338 | if (addr[0] == 0 && addr[1] == 0 && |
| 339 | addr[2] == htonl(0xffff) && |
| 340 | bitstring_match(addr+3, cond->addr, cond->prefix_len)) |
| 341 | break; |
| 342 | } |
| 343 | yes = 0; |
| 344 | break; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | if (yes) { |
| 349 | len -= op->yes; |
| 350 | bc += op->yes; |
| 351 | } else { |
| 352 | len -= op->no; |
| 353 | bc += op->no; |
| 354 | } |
| 355 | } |
| 356 | return (len == 0); |
| 357 | } |
| 358 | |
| 359 | static int valid_cc(const void *bc, int len, int cc) |
| 360 | { |
| 361 | while (len >= 0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 362 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
| 364 | if (cc > len) |
| 365 | return 0; |
| 366 | if (cc == len) |
| 367 | return 1; |
| 368 | if (op->yes < 4) |
| 369 | return 0; |
| 370 | len -= op->yes; |
| 371 | bc += op->yes; |
| 372 | } |
| 373 | return 0; |
| 374 | } |
| 375 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 376 | static int inet_diag_bc_audit(const void *bytecode, int bytecode_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | { |
| 378 | const unsigned char *bc = bytecode; |
| 379 | int len = bytecode_len; |
| 380 | |
| 381 | while (len > 0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 382 | struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
| 384 | //printk("BC: %d %d %d {%d} / %d\n", op->code, op->yes, op->no, op[1].no, len); |
| 385 | switch (op->code) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 386 | case INET_DIAG_BC_AUTO: |
| 387 | case INET_DIAG_BC_S_COND: |
| 388 | case INET_DIAG_BC_D_COND: |
| 389 | case INET_DIAG_BC_S_GE: |
| 390 | case INET_DIAG_BC_S_LE: |
| 391 | case INET_DIAG_BC_D_GE: |
| 392 | case INET_DIAG_BC_D_LE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | if (op->yes < 4 || op->yes > len+4) |
| 394 | return -EINVAL; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 395 | case INET_DIAG_BC_JMP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | if (op->no < 4 || op->no > len+4) |
| 397 | return -EINVAL; |
| 398 | if (op->no < len && |
| 399 | !valid_cc(bytecode, bytecode_len, len-op->no)) |
| 400 | return -EINVAL; |
| 401 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 402 | case INET_DIAG_BC_NOP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | if (op->yes < 4 || op->yes > len+4) |
| 404 | return -EINVAL; |
| 405 | break; |
| 406 | default: |
| 407 | return -EINVAL; |
| 408 | } |
| 409 | bc += op->yes; |
| 410 | len -= op->yes; |
| 411 | } |
| 412 | return len == 0 ? 0 : -EINVAL; |
| 413 | } |
| 414 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 415 | static int inet_diag_dump_sock(struct sk_buff *skb, struct sock *sk, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | struct netlink_callback *cb) |
| 417 | { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 418 | struct inet_diag_req *r = NLMSG_DATA(cb->nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | |
| 420 | if (cb->nlh->nlmsg_len > 4 + NLMSG_SPACE(sizeof(*r))) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 421 | struct inet_diag_entry entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | struct rtattr *bc = (struct rtattr *)(r + 1); |
| 423 | struct inet_sock *inet = inet_sk(sk); |
| 424 | |
| 425 | entry.family = sk->sk_family; |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 426 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | if (entry.family == AF_INET6) { |
| 428 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 429 | |
| 430 | entry.saddr = np->rcv_saddr.s6_addr32; |
| 431 | entry.daddr = np->daddr.s6_addr32; |
| 432 | } else |
| 433 | #endif |
| 434 | { |
| 435 | entry.saddr = &inet->rcv_saddr; |
| 436 | entry.daddr = &inet->daddr; |
| 437 | } |
| 438 | entry.sport = inet->num; |
| 439 | entry.dport = ntohs(inet->dport); |
| 440 | entry.userlocks = sk->sk_userlocks; |
| 441 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 442 | if (!inet_diag_bc_run(RTA_DATA(bc), RTA_PAYLOAD(bc), &entry)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | return 0; |
| 444 | } |
| 445 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 446 | return inet_diag_fill(skb, sk, r->idiag_ext, NETLINK_CB(cb->skb).pid, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 447 | cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | } |
| 449 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 450 | static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, |
Arnaldo Carvalho de Melo | 60236fd | 2005-06-18 22:47:21 -0700 | [diff] [blame] | 451 | struct request_sock *req, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 452 | u32 pid, u32 seq, |
| 453 | const struct nlmsghdr *unlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 455 | const struct inet_request_sock *ireq = inet_rsk(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | struct inet_sock *inet = inet_sk(sk); |
| 457 | unsigned char *b = skb->tail; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 458 | struct inet_diag_msg *r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | struct nlmsghdr *nlh; |
| 460 | long tmo; |
| 461 | |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 462 | nlh = NLMSG_PUT(skb, pid, seq, unlh->nlmsg_type, sizeof(*r)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | nlh->nlmsg_flags = NLM_F_MULTI; |
| 464 | r = NLMSG_DATA(nlh); |
| 465 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 466 | r->idiag_family = sk->sk_family; |
| 467 | r->idiag_state = TCP_SYN_RECV; |
| 468 | r->idiag_timer = 1; |
| 469 | r->idiag_retrans = req->retrans; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 471 | r->id.idiag_if = sk->sk_bound_dev_if; |
| 472 | r->id.idiag_cookie[0] = (u32)(unsigned long)req; |
| 473 | r->id.idiag_cookie[1] = (u32)(((unsigned long)req >> 31) >> 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | tmo = req->expires - jiffies; |
| 476 | if (tmo < 0) |
| 477 | tmo = 0; |
| 478 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 479 | r->id.idiag_sport = inet->sport; |
| 480 | r->id.idiag_dport = ireq->rmt_port; |
| 481 | r->id.idiag_src[0] = ireq->loc_addr; |
| 482 | r->id.idiag_dst[0] = ireq->rmt_addr; |
| 483 | r->idiag_expires = jiffies_to_msecs(tmo); |
| 484 | r->idiag_rqueue = 0; |
| 485 | r->idiag_wqueue = 0; |
| 486 | r->idiag_uid = sock_i_uid(sk); |
| 487 | r->idiag_inode = 0; |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 488 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 489 | if (r->idiag_family == AF_INET6) { |
| 490 | ipv6_addr_copy((struct in6_addr *)r->id.idiag_src, |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 491 | &tcp6_rsk(req)->loc_addr); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 492 | ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst, |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 493 | &tcp6_rsk(req)->rmt_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | } |
| 495 | #endif |
| 496 | nlh->nlmsg_len = skb->tail - b; |
| 497 | |
| 498 | return skb->len; |
| 499 | |
| 500 | nlmsg_failure: |
| 501 | skb_trim(skb, b - skb->data); |
| 502 | return -1; |
| 503 | } |
| 504 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 505 | static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | struct netlink_callback *cb) |
| 507 | { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 508 | struct inet_diag_entry entry; |
| 509 | struct inet_diag_req *r = NLMSG_DATA(cb->nlh); |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 510 | struct inet_connection_sock *icsk = inet_csk(sk); |
Arnaldo Carvalho de Melo | 2ad69c5 | 2005-06-18 22:48:55 -0700 | [diff] [blame] | 511 | struct listen_sock *lopt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | struct rtattr *bc = NULL; |
| 513 | struct inet_sock *inet = inet_sk(sk); |
| 514 | int j, s_j; |
| 515 | int reqnum, s_reqnum; |
| 516 | int err = 0; |
| 517 | |
| 518 | s_j = cb->args[3]; |
| 519 | s_reqnum = cb->args[4]; |
| 520 | |
| 521 | if (s_j > 0) |
| 522 | s_j--; |
| 523 | |
| 524 | entry.family = sk->sk_family; |
| 525 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 526 | read_lock_bh(&icsk->icsk_accept_queue.syn_wait_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 528 | lopt = icsk->icsk_accept_queue.listen_opt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | if (!lopt || !lopt->qlen) |
| 530 | goto out; |
| 531 | |
| 532 | if (cb->nlh->nlmsg_len > 4 + NLMSG_SPACE(sizeof(*r))) { |
| 533 | bc = (struct rtattr *)(r + 1); |
| 534 | entry.sport = inet->num; |
| 535 | entry.userlocks = sk->sk_userlocks; |
| 536 | } |
| 537 | |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 538 | for (j = s_j; j < lopt->nr_table_entries; j++) { |
Arnaldo Carvalho de Melo | 60236fd | 2005-06-18 22:47:21 -0700 | [diff] [blame] | 539 | struct request_sock *req, *head = lopt->syn_table[j]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
| 541 | reqnum = 0; |
| 542 | for (req = head; req; reqnum++, req = req->dl_next) { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 543 | struct inet_request_sock *ireq = inet_rsk(req); |
| 544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | if (reqnum < s_reqnum) |
| 546 | continue; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 547 | if (r->id.idiag_dport != ireq->rmt_port && |
| 548 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | continue; |
| 550 | |
| 551 | if (bc) { |
| 552 | entry.saddr = |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 553 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | (entry.family == AF_INET6) ? |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 555 | tcp6_rsk(req)->loc_addr.s6_addr32 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | #endif |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 557 | &ireq->loc_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | entry.daddr = |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 559 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | (entry.family == AF_INET6) ? |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 561 | tcp6_rsk(req)->rmt_addr.s6_addr32 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | #endif |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 563 | &ireq->rmt_addr; |
| 564 | entry.dport = ntohs(ireq->rmt_port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 566 | if (!inet_diag_bc_run(RTA_DATA(bc), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | RTA_PAYLOAD(bc), &entry)) |
| 568 | continue; |
| 569 | } |
| 570 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 571 | err = inet_diag_fill_req(skb, sk, req, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | NETLINK_CB(cb->skb).pid, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 573 | cb->nlh->nlmsg_seq, cb->nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | if (err < 0) { |
| 575 | cb->args[3] = j + 1; |
| 576 | cb->args[4] = reqnum; |
| 577 | goto out; |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | s_reqnum = 0; |
| 582 | } |
| 583 | |
| 584 | out: |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 585 | read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | |
| 587 | return err; |
| 588 | } |
| 589 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 590 | static int inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
| 592 | int i, num; |
| 593 | int s_i, s_num; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 594 | struct inet_diag_req *r = NLMSG_DATA(cb->nlh); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 595 | const struct inet_diag_handler *handler; |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 596 | struct inet_hashinfo *hashinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 598 | handler = inet_diag_table[cb->nlh->nlmsg_type]; |
| 599 | BUG_ON(handler == NULL); |
| 600 | hashinfo = handler->idiag_hashinfo; |
| 601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | s_i = cb->args[1]; |
| 603 | s_num = num = cb->args[2]; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 604 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | if (cb->args[0] == 0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 606 | if (!(r->idiag_states & (TCPF_LISTEN | TCPF_SYN_RECV))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | goto skip_listen_ht; |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 608 | |
| 609 | inet_listen_lock(hashinfo); |
Arnaldo Carvalho de Melo | 0f7ff92 | 2005-08-09 19:59:44 -0700 | [diff] [blame] | 610 | for (i = s_i; i < INET_LHTABLE_SIZE; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | struct sock *sk; |
| 612 | struct hlist_node *node; |
| 613 | |
| 614 | num = 0; |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 615 | sk_for_each(sk, node, &hashinfo->listening_hash[i]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | struct inet_sock *inet = inet_sk(sk); |
| 617 | |
| 618 | if (num < s_num) { |
| 619 | num++; |
| 620 | continue; |
| 621 | } |
| 622 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 623 | if (r->id.idiag_sport != inet->sport && |
| 624 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | goto next_listen; |
| 626 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 627 | if (!(r->idiag_states & TCPF_LISTEN) || |
| 628 | r->id.idiag_dport || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | cb->args[3] > 0) |
| 630 | goto syn_recv; |
| 631 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 632 | if (inet_diag_dump_sock(skb, sk, cb) < 0) { |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 633 | inet_listen_unlock(hashinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | goto done; |
| 635 | } |
| 636 | |
| 637 | syn_recv: |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 638 | if (!(r->idiag_states & TCPF_SYN_RECV)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | goto next_listen; |
| 640 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 641 | if (inet_diag_dump_reqs(skb, sk, cb) < 0) { |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 642 | inet_listen_unlock(hashinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | goto done; |
| 644 | } |
| 645 | |
| 646 | next_listen: |
| 647 | cb->args[3] = 0; |
| 648 | cb->args[4] = 0; |
| 649 | ++num; |
| 650 | } |
| 651 | |
| 652 | s_num = 0; |
| 653 | cb->args[3] = 0; |
| 654 | cb->args[4] = 0; |
| 655 | } |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 656 | inet_listen_unlock(hashinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | skip_listen_ht: |
| 658 | cb->args[0] = 1; |
| 659 | s_i = num = s_num = 0; |
| 660 | } |
| 661 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 662 | if (!(r->idiag_states & ~(TCPF_LISTEN | TCPF_SYN_RECV))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | return skb->len; |
| 664 | |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 665 | for (i = s_i; i < hashinfo->ehash_size; i++) { |
| 666 | struct inet_ehash_bucket *head = &hashinfo->ehash[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | struct sock *sk; |
| 668 | struct hlist_node *node; |
| 669 | |
| 670 | if (i > s_i) |
| 671 | s_num = 0; |
| 672 | |
| 673 | read_lock_bh(&head->lock); |
| 674 | |
| 675 | num = 0; |
| 676 | sk_for_each(sk, node, &head->chain) { |
| 677 | struct inet_sock *inet = inet_sk(sk); |
| 678 | |
| 679 | if (num < s_num) |
| 680 | goto next_normal; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 681 | if (!(r->idiag_states & (1 << sk->sk_state))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | goto next_normal; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 683 | if (r->id.idiag_sport != inet->sport && |
| 684 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | goto next_normal; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 686 | if (r->id.idiag_dport != inet->dport && r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | goto next_normal; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 688 | if (inet_diag_dump_sock(skb, sk, cb) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | read_unlock_bh(&head->lock); |
| 690 | goto done; |
| 691 | } |
| 692 | next_normal: |
| 693 | ++num; |
| 694 | } |
| 695 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 696 | if (r->idiag_states & TCPF_TIME_WAIT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | sk_for_each(sk, node, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 698 | &hashinfo->ehash[i + hashinfo->ehash_size].chain) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | struct inet_sock *inet = inet_sk(sk); |
| 700 | |
| 701 | if (num < s_num) |
| 702 | goto next_dying; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 703 | if (r->id.idiag_sport != inet->sport && |
| 704 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | goto next_dying; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 706 | if (r->id.idiag_dport != inet->dport && |
| 707 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | goto next_dying; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 709 | if (inet_diag_dump_sock(skb, sk, cb) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | read_unlock_bh(&head->lock); |
| 711 | goto done; |
| 712 | } |
| 713 | next_dying: |
| 714 | ++num; |
| 715 | } |
| 716 | } |
| 717 | read_unlock_bh(&head->lock); |
| 718 | } |
| 719 | |
| 720 | done: |
| 721 | cb->args[1] = i; |
| 722 | cb->args[2] = num; |
| 723 | return skb->len; |
| 724 | } |
| 725 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 726 | static int inet_diag_dump_done(struct netlink_callback *cb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | { |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | |
| 732 | static __inline__ int |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 733 | inet_diag_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | { |
| 735 | if (!(nlh->nlmsg_flags&NLM_F_REQUEST)) |
| 736 | return 0; |
| 737 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 738 | if (nlh->nlmsg_type >= INET_DIAG_GETSOCK_MAX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | goto err_inval; |
| 740 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 741 | if (inet_diag_table[nlh->nlmsg_type] == NULL) |
| 742 | return -ENOENT; |
| 743 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 744 | if (NLMSG_LENGTH(sizeof(struct inet_diag_req)) > skb->len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | goto err_inval; |
| 746 | |
| 747 | if (nlh->nlmsg_flags&NLM_F_DUMP) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 748 | if (nlh->nlmsg_len > |
| 749 | (4 + NLMSG_SPACE(sizeof(struct inet_diag_req)))) { |
| 750 | struct rtattr *rta = (void *)(NLMSG_DATA(nlh) + |
| 751 | sizeof(struct inet_diag_req)); |
| 752 | if (rta->rta_type != INET_DIAG_REQ_BYTECODE || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | rta->rta_len < 8 || |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 754 | rta->rta_len > |
| 755 | (nlh->nlmsg_len - |
| 756 | NLMSG_SPACE(sizeof(struct inet_diag_req)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | goto err_inval; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 758 | if (inet_diag_bc_audit(RTA_DATA(rta), RTA_PAYLOAD(rta))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | goto err_inval; |
| 760 | } |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 761 | return netlink_dump_start(idiagnl, skb, nlh, |
| 762 | inet_diag_dump, |
| 763 | inet_diag_dump_done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | } else { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 765 | return inet_diag_get_exact(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | err_inval: |
| 769 | return -EINVAL; |
| 770 | } |
| 771 | |
| 772 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 773 | static inline void inet_diag_rcv_skb(struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | { |
| 775 | int err; |
| 776 | struct nlmsghdr * nlh; |
| 777 | |
| 778 | if (skb->len >= NLMSG_SPACE(0)) { |
| 779 | nlh = (struct nlmsghdr *)skb->data; |
| 780 | if (nlh->nlmsg_len < sizeof(*nlh) || skb->len < nlh->nlmsg_len) |
| 781 | return; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 782 | err = inet_diag_rcv_msg(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | if (err || nlh->nlmsg_flags & NLM_F_ACK) |
| 784 | netlink_ack(skb, nlh, err); |
| 785 | } |
| 786 | } |
| 787 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 788 | static void inet_diag_rcv(struct sock *sk, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | { |
| 790 | struct sk_buff *skb; |
Herbert Xu | 2a0a6eb | 2005-05-03 14:55:09 -0700 | [diff] [blame] | 791 | unsigned int qlen = skb_queue_len(&sk->sk_receive_queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | |
Herbert Xu | 2a0a6eb | 2005-05-03 14:55:09 -0700 | [diff] [blame] | 793 | while (qlen-- && (skb = skb_dequeue(&sk->sk_receive_queue))) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 794 | inet_diag_rcv_skb(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | kfree_skb(skb); |
| 796 | } |
| 797 | } |
| 798 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 799 | static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 800 | void *_info) |
| 801 | { |
| 802 | const struct tcp_sock *tp = tcp_sk(sk); |
| 803 | struct tcp_info *info = _info; |
| 804 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 805 | r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq; |
| 806 | r->idiag_wqueue = tp->write_seq - tp->snd_una; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 807 | if (info != NULL) |
| 808 | tcp_get_info(sk, info); |
| 809 | } |
| 810 | |
| 811 | static struct inet_diag_handler tcp_diag_handler = { |
| 812 | .idiag_hashinfo = &tcp_hashinfo, |
| 813 | .idiag_get_info = tcp_diag_get_info, |
| 814 | .idiag_type = TCPDIAG_GETSOCK, |
| 815 | .idiag_info_size = sizeof(struct tcp_info), |
| 816 | }; |
| 817 | |
| 818 | static DEFINE_SPINLOCK(inet_diag_register_lock); |
| 819 | |
| 820 | int inet_diag_register(const struct inet_diag_handler *h) |
| 821 | { |
| 822 | const __u16 type = h->idiag_type; |
| 823 | int err = -EINVAL; |
| 824 | |
| 825 | if (type >= INET_DIAG_GETSOCK_MAX) |
| 826 | goto out; |
| 827 | |
| 828 | spin_lock(&inet_diag_register_lock); |
| 829 | err = -EEXIST; |
| 830 | if (inet_diag_table[type] == NULL) { |
| 831 | inet_diag_table[type] = h; |
| 832 | err = 0; |
| 833 | } |
| 834 | spin_unlock(&inet_diag_register_lock); |
| 835 | out: |
| 836 | return err; |
| 837 | } |
| 838 | EXPORT_SYMBOL_GPL(inet_diag_register); |
| 839 | |
| 840 | void inet_diag_unregister(const struct inet_diag_handler *h) |
| 841 | { |
| 842 | const __u16 type = h->idiag_type; |
| 843 | |
| 844 | if (type >= INET_DIAG_GETSOCK_MAX) |
| 845 | return; |
| 846 | |
| 847 | spin_lock(&inet_diag_register_lock); |
| 848 | inet_diag_table[type] = NULL; |
| 849 | spin_unlock(&inet_diag_register_lock); |
| 850 | |
| 851 | synchronize_rcu(); |
| 852 | } |
| 853 | EXPORT_SYMBOL_GPL(inet_diag_unregister); |
| 854 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 855 | static int __init inet_diag_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | { |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 857 | const int inet_diag_table_size = (INET_DIAG_GETSOCK_MAX * |
| 858 | sizeof(struct inet_diag_handler *)); |
| 859 | int err = -ENOMEM; |
| 860 | |
| 861 | inet_diag_table = kmalloc(inet_diag_table_size, GFP_KERNEL); |
| 862 | if (!inet_diag_table) |
| 863 | goto out; |
| 864 | |
| 865 | memset(inet_diag_table, 0, inet_diag_table_size); |
| 866 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 867 | idiagnl = netlink_kernel_create(NETLINK_INET_DIAG, inet_diag_rcv, |
| 868 | THIS_MODULE); |
| 869 | if (idiagnl == NULL) |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 870 | goto out_free_table; |
| 871 | |
| 872 | err = inet_diag_register(&tcp_diag_handler); |
| 873 | if (err) |
| 874 | goto out_sock_release; |
| 875 | out: |
| 876 | return err; |
| 877 | out_sock_release: |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 878 | sock_release(idiagnl->sk_socket); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 879 | out_free_table: |
| 880 | kfree(inet_diag_table); |
| 881 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | } |
| 883 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 884 | static void __exit inet_diag_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 886 | sock_release(idiagnl->sk_socket); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 887 | kfree(inet_diag_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | } |
| 889 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame^] | 890 | module_init(inet_diag_init); |
| 891 | module_exit(inet_diag_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | MODULE_LICENSE("GPL"); |