1 /* 2 * INET An implementation of the TCP/IP protocol suite for the LINUX 3 * operating system. INET is implemented using the BSD Socket 4 * interface as the means of communication with the user level. 5 * 6 * This file implements the various access functions for the 7 * PROC file system. This is very similar to the IPv4 version, 8 * except it reports the sockets in the INET6 address family. 9 * 10 * Version: $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $ 11 * 12 * Authors: David S. Miller (davem@caip.rutgers.edu) 13 * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation; either version 18 * 2 of the License, or (at your option) any later version. 19 */ 20 #include <linux/socket.h> 21 #include <linux/net.h> 22 #include <linux/ipv6.h> 23 #include <linux/proc_fs.h> 24 #include <linux/seq_file.h> 25 #include <linux/stddef.h> 26 #include <net/net_namespace.h> 27 #include <net/ip.h> 28 #include <net/sock.h> 29 #include <net/tcp.h> 30 #include <net/udp.h> 31 #include <net/transp_v6.h> 32 #include <net/ipv6.h> 33 34 static struct proc_dir_entry *proc_net_devsnmp6; 35 36 static int sockstat6_seq_show(struct seq_file *seq, void *v) 37 { 38 seq_printf(seq, "TCP6: inuse %d\n", 39 sock_prot_inuse_get(&tcpv6_prot)); 40 seq_printf(seq, "UDP6: inuse %d\n", 41 sock_prot_inuse_get(&udpv6_prot)); 42 #ifdef CONFIG_IP_UDPLITE 43 seq_printf(seq, "UDPLITE6: inuse %d\n", 44 sock_prot_inuse_get(&udplitev6_prot)); 45 #endif 46 seq_printf(seq, "RAW6: inuse %d\n", 47 sock_prot_inuse_get(&rawv6_prot)); 48 seq_printf(seq, "FRAG6: inuse %d memory %d\n", 49 ip6_frag_nqueues(&init_net), ip6_frag_mem(&init_net)); 50 return 0; 51 } 52 53 static struct snmp_mib snmp6_ipstats_list[] = { 54 /* ipv6 mib according to RFC 2465 */ 55 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES), 56 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS), 57 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS), 58 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES), 59 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS), 60 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), 61 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), 62 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS), 63 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS), 64 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), 65 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS), 66 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS), 67 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), 68 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), 69 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS), 70 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS), 71 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS), 72 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS), 73 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS), 74 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES), 75 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS), 76 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), 77 SNMP_MIB_SENTINEL 78 }; 79 80 static struct snmp_mib snmp6_icmp6_list[] = { 81 /* icmpv6 mib according to RFC 2466 */ 82 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), 83 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), 84 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), 85 SNMP_MIB_SENTINEL 86 }; 87 88 /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */ 89 static char *icmp6type2name[256] = { 90 [ICMPV6_DEST_UNREACH] = "DestUnreachs", 91 [ICMPV6_PKT_TOOBIG] = "PktTooBigs", 92 [ICMPV6_TIME_EXCEED] = "TimeExcds", 93 [ICMPV6_PARAMPROB] = "ParmProblems", 94 [ICMPV6_ECHO_REQUEST] = "Echos", 95 [ICMPV6_ECHO_REPLY] = "EchoReplies", 96 [ICMPV6_MGM_QUERY] = "GroupMembQueries", 97 [ICMPV6_MGM_REPORT] = "GroupMembResponses", 98 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions", 99 [ICMPV6_MLD2_REPORT] = "MLDv2Reports", 100 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements", 101 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits", 102 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements", 103 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits", 104 [NDISC_REDIRECT] = "Redirects", 105 }; 106 107 108 static struct snmp_mib snmp6_udp6_list[] = { 109 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS), 110 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS), 111 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS), 112 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS), 113 SNMP_MIB_SENTINEL 114 }; 115 116 #ifdef CONFIG_IP_UDPLITE 117 static struct snmp_mib snmp6_udplite6_list[] = { 118 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS), 119 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS), 120 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS), 121 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS), 122 SNMP_MIB_SENTINEL 123 }; 124 #endif 125 126 static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib) 127 { 128 static char name[32]; 129 int i; 130 131 /* print by name -- deprecated items */ 132 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { 133 int icmptype; 134 char *p; 135 136 icmptype = i & 0xff; 137 p = icmp6type2name[icmptype]; 138 if (!p) /* don't print un-named types here */ 139 continue; 140 (void) snprintf(name, sizeof(name)-1, "Icmp6%s%s", 141 i & 0x100 ? "Out" : "In", p); 142 seq_printf(seq, "%-32s\t%lu\n", name, 143 snmp_fold_field(mib, i)); 144 } 145 146 /* print by number (nonzero only) - ICMPMsgStat format */ 147 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { 148 unsigned long val; 149 150 val = snmp_fold_field(mib, i); 151 if (!val) 152 continue; 153 (void) snprintf(name, sizeof(name)-1, "Icmp6%sType%u", 154 i & 0x100 ? "Out" : "In", i & 0xff); 155 seq_printf(seq, "%-32s\t%lu\n", name, val); 156 } 157 return; 158 } 159 160 static inline void 161 snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist) 162 { 163 int i; 164 for (i=0; itemlist[i].name; i++) 165 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, 166 snmp_fold_field(mib, itemlist[i].entry)); 167 } 168 169 static int snmp6_seq_show(struct seq_file *seq, void *v) 170 { 171 struct inet6_dev *idev = (struct inet6_dev *)seq->private; 172 173 if (idev) { 174 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); 175 snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list); 176 snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list); 177 snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg); 178 } else { 179 snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list); 180 snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list); 181 snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics); 182 snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list); 183 #ifdef CONFIG_IP_UDPLITE 184 snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list); 185 #endif 186 } 187 return 0; 188 } 189 190 static int sockstat6_seq_open(struct inode *inode, struct file *file) 191 { 192 return single_open(file, sockstat6_seq_show, NULL); 193 } 194 195 static const struct file_operations sockstat6_seq_fops = { 196 .owner = THIS_MODULE, 197 .open = sockstat6_seq_open, 198 .read = seq_read, 199 .llseek = seq_lseek, 200 .release = single_release, 201 }; 202 203 static int snmp6_seq_open(struct inode *inode, struct file *file) 204 { 205 return single_open(file, snmp6_seq_show, PDE(inode)->data); 206 } 207 208 static const struct file_operations snmp6_seq_fops = { 209 .owner = THIS_MODULE, 210 .open = snmp6_seq_open, 211 .read = seq_read, 212 .llseek = seq_lseek, 213 .release = single_release, 214 }; 215 216 int snmp6_register_dev(struct inet6_dev *idev) 217 { 218 struct proc_dir_entry *p; 219 220 if (!idev || !idev->dev) 221 return -EINVAL; 222 223 if (!proc_net_devsnmp6) 224 return -ENOENT; 225 226 p = proc_create(idev->dev->name, S_IRUGO, 227 proc_net_devsnmp6, &snmp6_seq_fops); 228 if (!p) 229 return -ENOMEM; 230 231 p->data = idev; 232 233 idev->stats.proc_dir_entry = p; 234 return 0; 235 } 236 237 int snmp6_unregister_dev(struct inet6_dev *idev) 238 { 239 if (!proc_net_devsnmp6) 240 return -ENOENT; 241 if (!idev || !idev->stats.proc_dir_entry) 242 return -EINVAL; 243 remove_proc_entry(idev->stats.proc_dir_entry->name, 244 proc_net_devsnmp6); 245 idev->stats.proc_dir_entry = NULL; 246 return 0; 247 } 248 249 int __init ipv6_misc_proc_init(void) 250 { 251 int rc = 0; 252 253 if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops)) 254 goto proc_snmp6_fail; 255 256 proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net); 257 if (!proc_net_devsnmp6) 258 goto proc_dev_snmp6_fail; 259 260 if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops)) 261 goto proc_sockstat6_fail; 262 out: 263 return rc; 264 265 proc_sockstat6_fail: 266 proc_net_remove(&init_net, "dev_snmp6"); 267 proc_dev_snmp6_fail: 268 proc_net_remove(&init_net, "snmp6"); 269 proc_snmp6_fail: 270 rc = -ENOMEM; 271 goto out; 272 } 273 274 void ipv6_misc_proc_exit(void) 275 { 276 proc_net_remove(&init_net, "sockstat6"); 277 proc_net_remove(&init_net, "dev_snmp6"); 278 proc_net_remove(&init_net, "snmp6"); 279 } 280 281