/* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * This file implements the various access functions for the * PROC file system. This is very similar to the IPv4 version, * except it reports the sockets in the INET6 address family. * * Authors: David S. Miller (davem@caip.rutgers.edu) * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/socket.h> #include <linux/net.h> #include <linux/ipv6.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/stddef.h> #include <net/net_namespace.h> #include <net/ip.h> #include <net/sock.h> #include <net/tcp.h> #include <net/udp.h> #include <net/transp_v6.h> #include <net/ipv6.h> static int sockstat6_seq_show(struct seq_file *seq, void *v) { struct net *net = seq->private; seq_printf(seq, "TCP6: inuse %d\n", sock_prot_inuse_get(net, &tcpv6_prot)); seq_printf(seq, "UDP6: inuse %d\n", sock_prot_inuse_get(net, &udpv6_prot)); seq_printf(seq, "UDPLITE6: inuse %d\n", sock_prot_inuse_get(net, &udplitev6_prot)); seq_printf(seq, "RAW6: inuse %d\n", sock_prot_inuse_get(net, &rawv6_prot)); seq_printf(seq, "FRAG6: inuse %d memory %d\n", ip6_frag_nqueues(net), ip6_frag_mem(net)); return 0; } static int sockstat6_seq_open(struct inode *inode, struct file *file) { return single_open_net(inode, file, sockstat6_seq_show); } static const struct file_operations sockstat6_seq_fops = { .owner = THIS_MODULE, .open = sockstat6_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release_net, }; static struct snmp_mib snmp6_ipstats_list[] = { /* ipv6 mib according to RFC 2465 */ SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES), SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS), SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS), SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES), SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS), SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS), SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS), SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS), SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS), SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS), SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS), SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS), SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS), SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS), SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES), SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS), SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), SNMP_MIB_SENTINEL }; static struct snmp_mib snmp6_icmp6_list[] = { /* icmpv6 mib according to RFC 2466 */ SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), SNMP_MIB_SENTINEL }; /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */ static char *icmp6type2name[256] = { [ICMPV6_DEST_UNREACH] = "DestUnreachs", [ICMPV6_PKT_TOOBIG] = "PktTooBigs", [ICMPV6_TIME_EXCEED] = "TimeExcds", [ICMPV6_PARAMPROB] = "ParmProblems", [ICMPV6_ECHO_REQUEST] = "Echos", [ICMPV6_ECHO_REPLY] = "EchoReplies", [ICMPV6_MGM_QUERY] = "GroupMembQueries", [ICMPV6_MGM_REPORT] = "GroupMembResponses", [ICMPV6_MGM_REDUCTION] = "GroupMembReductions", [ICMPV6_MLD2_REPORT] = "MLDv2Reports", [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements", [NDISC_ROUTER_SOLICITATION] = "RouterSolicits", [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements", [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits", [NDISC_REDIRECT] = "Redirects", }; static struct snmp_mib snmp6_udp6_list[] = { SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS), SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS), SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS), SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS), SNMP_MIB_SENTINEL }; static struct snmp_mib snmp6_udplite6_list[] = { SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS), SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS), SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS), SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS), SNMP_MIB_SENTINEL }; static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib) { char name[32]; int i; /* print by name -- deprecated items */ for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { int icmptype; char *p; icmptype = i & 0xff; p = icmp6type2name[icmptype]; if (!p) /* don't print un-named types here */ continue; snprintf(name, sizeof(name), "Icmp6%s%s", i & 0x100 ? "Out" : "In", p); seq_printf(seq, "%-32s\t%lu\n", name, snmp_fold_field(mib, i)); } /* print by number (nonzero only) - ICMPMsgStat format */ for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { unsigned long val; val = snmp_fold_field(mib, i); if (!val) continue; snprintf(name, sizeof(name), "Icmp6%sType%u", i & 0x100 ? "Out" : "In", i & 0xff); seq_printf(seq, "%-32s\t%lu\n", name, val); } return; } static inline void snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist) { int i; for (i=0; itemlist[i].name; i++) seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, snmp_fold_field(mib, itemlist[i].entry)); } static int snmp6_seq_show(struct seq_file *seq, void *v) { struct net *net = (struct net *)seq->private; snmp6_seq_show_item(seq, (void **)net->mib.ipv6_statistics, snmp6_ipstats_list); snmp6_seq_show_item(seq, (void **)net->mib.icmpv6_statistics, snmp6_icmp6_list); snmp6_seq_show_icmpv6msg(seq, (void **)net->mib.icmpv6msg_statistics); snmp6_seq_show_item(seq, (void **)net->mib.udp_stats_in6, snmp6_udp6_list); snmp6_seq_show_item(seq, (void **)net->mib.udplite_stats_in6, snmp6_udplite6_list); return 0; } static int snmp6_seq_open(struct inode *inode, struct file *file) { return single_open_net(inode, file, snmp6_seq_show); } static const struct file_operations snmp6_seq_fops = { .owner = THIS_MODULE, .open = snmp6_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release_net, }; static int snmp6_dev_seq_show(struct seq_file *seq, void *v) { struct inet6_dev *idev = (struct inet6_dev *)seq->private; seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list); snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list); snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg); return 0; } static int snmp6_dev_seq_open(struct inode *inode, struct file *file) { return single_open(file, snmp6_dev_seq_show, PDE(inode)->data); } static const struct file_operations snmp6_dev_seq_fops = { .owner = THIS_MODULE, .open = snmp6_dev_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; int snmp6_register_dev(struct inet6_dev *idev) { struct proc_dir_entry *p; struct net *net; if (!idev || !idev->dev) return -EINVAL; net = dev_net(idev->dev); if (!net->mib.proc_net_devsnmp6) return -ENOENT; p = proc_create_data(idev->dev->name, S_IRUGO, net->mib.proc_net_devsnmp6, &snmp6_dev_seq_fops, idev); if (!p) return -ENOMEM; idev->stats.proc_dir_entry = p; return 0; } int snmp6_unregister_dev(struct inet6_dev *idev) { struct net *net = dev_net(idev->dev); if (!net->mib.proc_net_devsnmp6) return -ENOENT; if (!idev || !idev->stats.proc_dir_entry) return -EINVAL; remove_proc_entry(idev->stats.proc_dir_entry->name, net->mib.proc_net_devsnmp6); idev->stats.proc_dir_entry = NULL; return 0; } static int ipv6_proc_init_net(struct net *net) { if (!proc_net_fops_create(net, "sockstat6", S_IRUGO, &sockstat6_seq_fops)) return -ENOMEM; if (!proc_net_fops_create(net, "snmp6", S_IRUGO, &snmp6_seq_fops)) goto proc_snmp6_fail; net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net); if (!net->mib.proc_net_devsnmp6) goto proc_dev_snmp6_fail; return 0; proc_snmp6_fail: proc_net_remove(net, "sockstat6"); proc_dev_snmp6_fail: proc_net_remove(net, "dev_snmp6"); return -ENOMEM; } static void ipv6_proc_exit_net(struct net *net) { proc_net_remove(net, "sockstat6"); proc_net_remove(net, "dev_snmp6"); proc_net_remove(net, "snmp6"); } static struct pernet_operations ipv6_proc_ops = { .init = ipv6_proc_init_net, .exit = ipv6_proc_exit_net, }; int __init ipv6_misc_proc_init(void) { return register_pernet_subsys(&ipv6_proc_ops); } void ipv6_misc_proc_exit(void) { unregister_pernet_subsys(&ipv6_proc_ops); }