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(&tcpv6_prot)); 40 seq_printf(seq, "UDP6: inuse %d\n", 41 sock_prot_inuse(&udpv6_prot)); 42 seq_printf(seq, "UDPLITE6: inuse %d\n", 43 sock_prot_inuse(&udplitev6_prot)); 44 seq_printf(seq, "RAW6: inuse %d\n", 45 sock_prot_inuse(&rawv6_prot)); 46 seq_printf(seq, "FRAG6: inuse %d memory %d\n", 47 ip6_frag_nqueues(), ip6_frag_mem()); 48 return 0; 49 } 50 51 static struct snmp_mib snmp6_ipstats_list[] = { 52 /* ipv6 mib according to RFC 2465 */ 53 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES), 54 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS), 55 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS), 56 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES), 57 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS), 58 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), 59 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), 60 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS), 61 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS), 62 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), 63 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS), 64 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS), 65 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), 66 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), 67 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS), 68 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS), 69 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS), 70 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS), 71 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS), 72 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES), 73 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS), 74 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), 75 SNMP_MIB_SENTINEL 76 }; 77 78 static struct snmp_mib snmp6_icmp6_list[] = { 79 /* icmpv6 mib according to RFC 2466 */ 80 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), 81 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), 82 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), 83 SNMP_MIB_SENTINEL 84 }; 85 86 /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */ 87 static char *icmp6type2name[256] = { 88 [ICMPV6_DEST_UNREACH] = "DestUnreachs", 89 [ICMPV6_PKT_TOOBIG] = "PktTooBigs", 90 [ICMPV6_TIME_EXCEED] = "TimeExcds", 91 [ICMPV6_PARAMPROB] = "ParmProblems", 92 [ICMPV6_ECHO_REQUEST] = "Echos", 93 [ICMPV6_ECHO_REPLY] = "EchoReplies", 94 [ICMPV6_MGM_QUERY] = "GroupMembQueries", 95 [ICMPV6_MGM_REPORT] = "GroupMembResponses", 96 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions", 97 [ICMPV6_MLD2_REPORT] = "MLDv2Reports", 98 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements", 99 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits", 100 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements", 101 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits", 102 [NDISC_REDIRECT] = "Redirects", 103 }; 104 105 106 static struct snmp_mib snmp6_udp6_list[] = { 107 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS), 108 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS), 109 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS), 110 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS), 111 SNMP_MIB_SENTINEL 112 }; 113 114 static struct snmp_mib snmp6_udplite6_list[] = { 115 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS), 116 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS), 117 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS), 118 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS), 119 SNMP_MIB_SENTINEL 120 }; 121 122 static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib) 123 { 124 static char name[32]; 125 int i; 126 127 /* print by name -- deprecated items */ 128 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { 129 int icmptype; 130 char *p; 131 132 icmptype = i & 0xff; 133 p = icmp6type2name[icmptype]; 134 if (!p) /* don't print un-named types here */ 135 continue; 136 (void) snprintf(name, sizeof(name)-1, "Icmp6%s%s", 137 i & 0x100 ? "Out" : "In", p); 138 seq_printf(seq, "%-32s\t%lu\n", name, 139 snmp_fold_field(mib, i)); 140 } 141 142 /* print by number (nonzero only) - ICMPMsgStat format */ 143 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { 144 unsigned long val; 145 146 val = snmp_fold_field(mib, i); 147 if (!val) 148 continue; 149 (void) snprintf(name, sizeof(name)-1, "Icmp6%sType%u", 150 i & 0x100 ? "Out" : "In", i & 0xff); 151 seq_printf(seq, "%-32s\t%lu\n", name, val); 152 } 153 return; 154 } 155 156 static inline void 157 snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist) 158 { 159 int i; 160 for (i=0; itemlist[i].name; i++) 161 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, 162 snmp_fold_field(mib, itemlist[i].entry)); 163 } 164 165 static int snmp6_seq_show(struct seq_file *seq, void *v) 166 { 167 struct inet6_dev *idev = (struct inet6_dev *)seq->private; 168 169 if (idev) { 170 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); 171 snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list); 172 snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list); 173 snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg); 174 } else { 175 snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list); 176 snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list); 177 snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics); 178 snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list); 179 snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list); 180 } 181 return 0; 182 } 183 184 static int sockstat6_seq_open(struct inode *inode, struct file *file) 185 { 186 return single_open(file, sockstat6_seq_show, NULL); 187 } 188 189 static const struct file_operations sockstat6_seq_fops = { 190 .owner = THIS_MODULE, 191 .open = sockstat6_seq_open, 192 .read = seq_read, 193 .llseek = seq_lseek, 194 .release = single_release, 195 }; 196 197 static int snmp6_seq_open(struct inode *inode, struct file *file) 198 { 199 return single_open(file, snmp6_seq_show, PDE(inode)->data); 200 } 201 202 static const struct file_operations snmp6_seq_fops = { 203 .owner = THIS_MODULE, 204 .open = snmp6_seq_open, 205 .read = seq_read, 206 .llseek = seq_lseek, 207 .release = single_release, 208 }; 209 210 int snmp6_register_dev(struct inet6_dev *idev) 211 { 212 struct proc_dir_entry *p; 213 214 if (!idev || !idev->dev) 215 return -EINVAL; 216 217 if (!proc_net_devsnmp6) 218 return -ENOENT; 219 220 p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6); 221 if (!p) 222 return -ENOMEM; 223 224 p->data = idev; 225 p->proc_fops = &snmp6_seq_fops; 226 227 idev->stats.proc_dir_entry = p; 228 return 0; 229 } 230 231 int snmp6_unregister_dev(struct inet6_dev *idev) 232 { 233 if (!proc_net_devsnmp6) 234 return -ENOENT; 235 if (!idev || !idev->stats.proc_dir_entry) 236 return -EINVAL; 237 remove_proc_entry(idev->stats.proc_dir_entry->name, 238 proc_net_devsnmp6); 239 idev->stats.proc_dir_entry = NULL; 240 return 0; 241 } 242 243 int __init ipv6_misc_proc_init(void) 244 { 245 int rc = 0; 246 247 if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops)) 248 goto proc_snmp6_fail; 249 250 proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net); 251 if (!proc_net_devsnmp6) 252 goto proc_dev_snmp6_fail; 253 254 if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops)) 255 goto proc_sockstat6_fail; 256 out: 257 return rc; 258 259 proc_sockstat6_fail: 260 proc_net_remove(&init_net, "dev_snmp6"); 261 proc_dev_snmp6_fail: 262 proc_net_remove(&init_net, "snmp6"); 263 proc_snmp6_fail: 264 rc = -ENOMEM; 265 goto out; 266 } 267 268 void ipv6_misc_proc_exit(void) 269 { 270 proc_net_remove(&init_net, "sockstat6"); 271 proc_net_remove(&init_net, "dev_snmp6"); 272 proc_net_remove(&init_net, "snmp6"); 273 } 274 275