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/transp_v6.h> 31 #include <net/ipv6.h> 32 33 static struct proc_dir_entry *proc_net_devsnmp6; 34 35 static int sockstat6_seq_show(struct seq_file *seq, void *v) 36 { 37 seq_printf(seq, "TCP6: inuse %d\n", 38 sock_prot_inuse(&tcpv6_prot)); 39 seq_printf(seq, "UDP6: inuse %d\n", 40 sock_prot_inuse(&udpv6_prot)); 41 seq_printf(seq, "UDPLITE6: inuse %d\n", 42 sock_prot_inuse(&udplitev6_prot)); 43 seq_printf(seq, "RAW6: inuse %d\n", 44 sock_prot_inuse(&rawv6_prot)); 45 seq_printf(seq, "FRAG6: inuse %d memory %d\n", 46 ip6_frag_nqueues(), ip6_frag_mem()); 47 return 0; 48 } 49 50 static struct snmp_mib snmp6_ipstats_list[] = { 51 /* ipv6 mib according to RFC 2465 */ 52 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES), 53 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS), 54 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS), 55 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES), 56 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS), 57 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), 58 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), 59 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS), 60 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS), 61 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), 62 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS), 63 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS), 64 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), 65 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), 66 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS), 67 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS), 68 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS), 69 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS), 70 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS), 71 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES), 72 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS), 73 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), 74 SNMP_MIB_SENTINEL 75 }; 76 77 static struct snmp_mib snmp6_icmp6_list[] = { 78 /* icmpv6 mib according to RFC 2466 */ 79 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), 80 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), 81 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), 82 SNMP_MIB_SENTINEL 83 }; 84 85 /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */ 86 static char *icmp6type2name[256] = { 87 [ICMPV6_DEST_UNREACH] = "DestUnreachs", 88 [ICMPV6_PKT_TOOBIG] = "PktTooBigs", 89 [ICMPV6_TIME_EXCEED] = "TimeExcds", 90 [ICMPV6_PARAMPROB] = "ParmProblems", 91 [ICMPV6_ECHO_REQUEST] = "EchoRequest", 92 [ICMPV6_ECHO_REPLY] = "EchoReplies", 93 [ICMPV6_MGM_QUERY] = "GroupMembQueries", 94 [ICMPV6_MGM_REPORT] = "GroupMembResponses", 95 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions", 96 [ICMPV6_MLD2_REPORT] = "MLDv2Reports", 97 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements", 98 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits", 99 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements", 100 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits", 101 [NDISC_REDIRECT] = "NeighborRedirects", 102 }; 103 104 105 static struct snmp_mib snmp6_udp6_list[] = { 106 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS), 107 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS), 108 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS), 109 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS), 110 SNMP_MIB_SENTINEL 111 }; 112 113 static struct snmp_mib snmp6_udplite6_list[] = { 114 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS), 115 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS), 116 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS), 117 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS), 118 SNMP_MIB_SENTINEL 119 }; 120 121 static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib) 122 { 123 static char name[32]; 124 int i; 125 126 /* print by name -- deprecated items */ 127 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { 128 int icmptype; 129 char *p; 130 131 icmptype = i & 0xff; 132 p = icmp6type2name[icmptype]; 133 if (!p) /* don't print un-named types here */ 134 continue; 135 (void) snprintf(name, sizeof(name)-1, "Icmp6%s%s", 136 i & 0x100 ? "Out" : "In", p); 137 seq_printf(seq, "%-32s\t%lu\n", name, 138 snmp_fold_field(mib, i)); 139 } 140 141 /* print by number (nonzero only) - ICMPMsgStat format */ 142 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { 143 unsigned long val; 144 145 val = snmp_fold_field(mib, i); 146 if (!val) 147 continue; 148 (void) snprintf(name, sizeof(name)-1, "Icmp6%sType%u", 149 i & 0x100 ? "Out" : "In", i & 0xff); 150 seq_printf(seq, "%-32s\t%lu\n", name, val); 151 } 152 return; 153 } 154 155 static inline void 156 snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist) 157 { 158 int i; 159 for (i=0; itemlist[i].name; i++) 160 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, 161 snmp_fold_field(mib, itemlist[i].entry)); 162 } 163 164 static int snmp6_seq_show(struct seq_file *seq, void *v) 165 { 166 struct inet6_dev *idev = (struct inet6_dev *)seq->private; 167 168 if (idev) { 169 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); 170 snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list); 171 snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list); 172 snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg); 173 } else { 174 snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list); 175 snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list); 176 snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics); 177 snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list); 178 snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list); 179 } 180 return 0; 181 } 182 183 static int sockstat6_seq_open(struct inode *inode, struct file *file) 184 { 185 return single_open(file, sockstat6_seq_show, NULL); 186 } 187 188 static const struct file_operations sockstat6_seq_fops = { 189 .owner = THIS_MODULE, 190 .open = sockstat6_seq_open, 191 .read = seq_read, 192 .llseek = seq_lseek, 193 .release = single_release, 194 }; 195 196 static int snmp6_seq_open(struct inode *inode, struct file *file) 197 { 198 return single_open(file, snmp6_seq_show, PDE(inode)->data); 199 } 200 201 static const struct file_operations snmp6_seq_fops = { 202 .owner = THIS_MODULE, 203 .open = snmp6_seq_open, 204 .read = seq_read, 205 .llseek = seq_lseek, 206 .release = single_release, 207 }; 208 209 int snmp6_register_dev(struct inet6_dev *idev) 210 { 211 struct proc_dir_entry *p; 212 213 if (!idev || !idev->dev) 214 return -EINVAL; 215 216 if (!proc_net_devsnmp6) 217 return -ENOENT; 218 219 p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6); 220 if (!p) 221 return -ENOMEM; 222 223 p->data = idev; 224 p->proc_fops = &snmp6_seq_fops; 225 226 idev->stats.proc_dir_entry = p; 227 return 0; 228 } 229 230 int snmp6_unregister_dev(struct inet6_dev *idev) 231 { 232 if (!proc_net_devsnmp6) 233 return -ENOENT; 234 if (!idev || !idev->stats.proc_dir_entry) 235 return -EINVAL; 236 remove_proc_entry(idev->stats.proc_dir_entry->name, 237 proc_net_devsnmp6); 238 idev->stats.proc_dir_entry = NULL; 239 return 0; 240 } 241 242 int __init ipv6_misc_proc_init(void) 243 { 244 int rc = 0; 245 246 if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops)) 247 goto proc_snmp6_fail; 248 249 proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net); 250 if (!proc_net_devsnmp6) 251 goto proc_dev_snmp6_fail; 252 253 if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops)) 254 goto proc_sockstat6_fail; 255 out: 256 return rc; 257 258 proc_sockstat6_fail: 259 proc_net_remove(&init_net, "dev_snmp6"); 260 proc_dev_snmp6_fail: 261 proc_net_remove(&init_net, "snmp6"); 262 proc_snmp6_fail: 263 rc = -ENOMEM; 264 goto out; 265 } 266 267 void ipv6_misc_proc_exit(void) 268 { 269 proc_net_remove(&init_net, "sockstat6"); 270 proc_net_remove(&init_net, "dev_snmp6"); 271 proc_net_remove(&init_net, "snmp6"); 272 } 273 274