| /* |
| * 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 <linux/export.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 const struct snmp_mib snmp6_ipstats_list[] = { |
| /* ipv6 mib according to RFC 2465 */ |
| SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS), |
| 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_OUTPKTS), |
| 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_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS), |
| SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS), |
| SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS), |
| SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS), |
| SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS), |
| SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS), |
| SNMP_MIB_SENTINEL |
| }; |
| |
| static const 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_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS), |
| SNMP_MIB_SENTINEL |
| }; |
| |
| /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */ |
| static const char *const 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 const 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_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS), |
| SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS), |
| SNMP_MIB_SENTINEL |
| }; |
| |
| static const 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_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS), |
| SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS), |
| SNMP_MIB_SENTINEL |
| }; |
| |
| static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib) |
| { |
| char name[32]; |
| int i; |
| |
| /* print by name -- deprecated items */ |
| for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { |
| int icmptype; |
| const 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, |
| atomic_long_read(smib + i)); |
| } |
| |
| /* print by number (nonzero only) - ICMPMsgStat format */ |
| for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { |
| unsigned long val; |
| |
| val = atomic_long_read(smib + 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); |
| } |
| } |
| |
| /* can be called either with percpu mib (pcpumib != NULL), |
| * or shared one (smib != NULL) |
| */ |
| static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **pcpumib, |
| atomic_long_t *smib, |
| const struct snmp_mib *itemlist) |
| { |
| int i; |
| unsigned long val; |
| |
| for (i = 0; itemlist[i].name; i++) { |
| val = pcpumib ? |
| snmp_fold_field(pcpumib, itemlist[i].entry) : |
| atomic_long_read(smib + itemlist[i].entry); |
| seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, val); |
| } |
| } |
| |
| static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu **mib, |
| const struct snmp_mib *itemlist, size_t syncpoff) |
| { |
| int i; |
| |
| for (i = 0; itemlist[i].name; i++) |
| seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, |
| snmp_fold_field64(mib, itemlist[i].entry, syncpoff)); |
| } |
| |
| static int snmp6_seq_show(struct seq_file *seq, void *v) |
| { |
| struct net *net = (struct net *)seq->private; |
| |
| snmp6_seq_show_item64(seq, (void __percpu **)net->mib.ipv6_statistics, |
| snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp)); |
| snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics, |
| NULL, snmp6_icmp6_list); |
| snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs); |
| snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6, |
| NULL, snmp6_udp6_list); |
| snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6, |
| NULL, 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_item64(seq, (void __percpu **)idev->stats.ipv6, |
| snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp)); |
| snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs, |
| snmp6_icmp6_list); |
| snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs); |
| return 0; |
| } |
| |
| static int snmp6_dev_seq_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, snmp6_dev_seq_show, PDE_DATA(inode)); |
| } |
| |
| 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->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 __net_init ipv6_proc_init_net(struct net *net) |
| { |
| if (!proc_create("sockstat6", S_IRUGO, net->proc_net, |
| &sockstat6_seq_fops)) |
| return -ENOMEM; |
| |
| if (!proc_create("snmp6", S_IRUGO, net->proc_net, &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_dev_snmp6_fail: |
| remove_proc_entry("snmp6", net->proc_net); |
| proc_snmp6_fail: |
| remove_proc_entry("sockstat6", net->proc_net); |
| return -ENOMEM; |
| } |
| |
| static void __net_exit ipv6_proc_exit_net(struct net *net) |
| { |
| remove_proc_entry("sockstat6", net->proc_net); |
| remove_proc_entry("dev_snmp6", net->proc_net); |
| remove_proc_entry("snmp6", net->proc_net); |
| } |
| |
| 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); |
| } |
| |