/* * 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. * * Version: $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $ * * 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/sched.h> #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/sock.h> #include <net/tcp.h> #include <net/transp_v6.h> #include <net/ipv6.h> #ifdef CONFIG_PROC_FS static struct proc_dir_entry *proc_net_devsnmp6; static int fold_prot_inuse(struct proto *proto) { int res = 0; int cpu; for_each_possible_cpu(cpu) res += proto->stats[cpu].inuse; return res; } static int sockstat6_seq_show(struct seq_file *seq, void *v) { seq_printf(seq, "TCP6: inuse %d\n", fold_prot_inuse(&tcpv6_prot)); seq_printf(seq, "UDP6: inuse %d\n", fold_prot_inuse(&udpv6_prot)); seq_printf(seq, "UDPLITE6: inuse %d\n", fold_prot_inuse(&udplitev6_prot)); seq_printf(seq, "RAW6: inuse %d\n", fold_prot_inuse(&rawv6_prot)); seq_printf(seq, "FRAG6: inuse %d memory %d\n", ip6_frag_nqueues, atomic_read(&ip6_frag_mem)); return 0; } 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 Exceptions: {In|Out}AdminProhibs are removed, because I see no good reasons to account them separately of another dest.unreachs. OutErrs is zero identically. OutEchos too. OutRouterAdvertisements too. OutGroupMembQueries too. */ SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), SNMP_MIB_ITEM("Icmp6InDestUnreachs", ICMP6_MIB_INDESTUNREACHS), SNMP_MIB_ITEM("Icmp6InPktTooBigs", ICMP6_MIB_INPKTTOOBIGS), SNMP_MIB_ITEM("Icmp6InTimeExcds", ICMP6_MIB_INTIMEEXCDS), SNMP_MIB_ITEM("Icmp6InParmProblems", ICMP6_MIB_INPARMPROBLEMS), SNMP_MIB_ITEM("Icmp6InEchos", ICMP6_MIB_INECHOS), SNMP_MIB_ITEM("Icmp6InEchoReplies", ICMP6_MIB_INECHOREPLIES), SNMP_MIB_ITEM("Icmp6InGroupMembQueries", ICMP6_MIB_INGROUPMEMBQUERIES), SNMP_MIB_ITEM("Icmp6InGroupMembResponses", ICMP6_MIB_INGROUPMEMBRESPONSES), SNMP_MIB_ITEM("Icmp6InGroupMembReductions", ICMP6_MIB_INGROUPMEMBREDUCTIONS), SNMP_MIB_ITEM("Icmp6InRouterSolicits", ICMP6_MIB_INROUTERSOLICITS), SNMP_MIB_ITEM("Icmp6InRouterAdvertisements", ICMP6_MIB_INROUTERADVERTISEMENTS), SNMP_MIB_ITEM("Icmp6InNeighborSolicits", ICMP6_MIB_INNEIGHBORSOLICITS), SNMP_MIB_ITEM("Icmp6InNeighborAdvertisements", ICMP6_MIB_INNEIGHBORADVERTISEMENTS), SNMP_MIB_ITEM("Icmp6InRedirects", ICMP6_MIB_INREDIRECTS), SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), SNMP_MIB_ITEM("Icmp6OutDestUnreachs", ICMP6_MIB_OUTDESTUNREACHS), SNMP_MIB_ITEM("Icmp6OutPktTooBigs", ICMP6_MIB_OUTPKTTOOBIGS), SNMP_MIB_ITEM("Icmp6OutTimeExcds", ICMP6_MIB_OUTTIMEEXCDS), SNMP_MIB_ITEM("Icmp6OutParmProblems", ICMP6_MIB_OUTPARMPROBLEMS), SNMP_MIB_ITEM("Icmp6OutEchoReplies", ICMP6_MIB_OUTECHOREPLIES), SNMP_MIB_ITEM("Icmp6OutRouterSolicits", ICMP6_MIB_OUTROUTERSOLICITS), SNMP_MIB_ITEM("Icmp6OutNeighborSolicits", ICMP6_MIB_OUTNEIGHBORSOLICITS), SNMP_MIB_ITEM("Icmp6OutNeighborAdvertisements", ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS), SNMP_MIB_ITEM("Icmp6OutRedirects", ICMP6_MIB_OUTREDIRECTS), SNMP_MIB_ITEM("Icmp6OutGroupMembResponses", ICMP6_MIB_OUTGROUPMEMBRESPONSES), SNMP_MIB_ITEM("Icmp6OutGroupMembReductions", ICMP6_MIB_OUTGROUPMEMBREDUCTIONS), SNMP_MIB_SENTINEL }; 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 unsigned long fold_field(void *mib[], int offt) { unsigned long res = 0; int i; for_each_possible_cpu(i) { res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt); res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt); } return res; } 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, fold_field(mib, itemlist[i].entry)); } static int snmp6_seq_show(struct seq_file *seq, void *v) { struct inet6_dev *idev = (struct inet6_dev *)seq->private; if (idev) { 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); } else { snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list); snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list); snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list); snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list); } return 0; } static int sockstat6_seq_open(struct inode *inode, struct file *file) { return single_open(file, sockstat6_seq_show, NULL); } static struct file_operations sockstat6_seq_fops = { .owner = THIS_MODULE, .open = sockstat6_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static int snmp6_seq_open(struct inode *inode, struct file *file) { return single_open(file, snmp6_seq_show, PDE(inode)->data); } static struct file_operations snmp6_seq_fops = { .owner = THIS_MODULE, .open = snmp6_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; int snmp6_register_dev(struct inet6_dev *idev) { struct proc_dir_entry *p; if (!idev || !idev->dev) return -EINVAL; if (!proc_net_devsnmp6) return -ENOENT; p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6); if (!p) return -ENOMEM; p->data = idev; p->proc_fops = &snmp6_seq_fops; idev->stats.proc_dir_entry = p; return 0; } int snmp6_unregister_dev(struct inet6_dev *idev) { if (!proc_net_devsnmp6) return -ENOENT; if (!idev || !idev->stats.proc_dir_entry) return -EINVAL; remove_proc_entry(idev->stats.proc_dir_entry->name, proc_net_devsnmp6); return 0; } int __init ipv6_misc_proc_init(void) { int rc = 0; if (!proc_net_fops_create("snmp6", S_IRUGO, &snmp6_seq_fops)) goto proc_snmp6_fail; proc_net_devsnmp6 = proc_mkdir("dev_snmp6", proc_net); if (!proc_net_devsnmp6) goto proc_dev_snmp6_fail; if (!proc_net_fops_create("sockstat6", S_IRUGO, &sockstat6_seq_fops)) goto proc_sockstat6_fail; out: return rc; proc_sockstat6_fail: proc_net_remove("dev_snmp6"); proc_dev_snmp6_fail: proc_net_remove("snmp6"); proc_snmp6_fail: rc = -ENOMEM; goto out; } void ipv6_misc_proc_exit(void) { proc_net_remove("sockstat6"); proc_net_remove("dev_snmp6"); proc_net_remove("snmp6"); } #else /* CONFIG_PROC_FS */ int snmp6_register_dev(struct inet6_dev *idev) { return 0; } int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; } #endif /* CONFIG_PROC_FS */ int snmp6_alloc_dev(struct inet6_dev *idev) { int err = -ENOMEM; if (!idev || !idev->dev) return -EINVAL; if (snmp6_mib_init((void **)idev->stats.ipv6, sizeof(struct ipstats_mib), __alignof__(struct ipstats_mib)) < 0) goto err_ip; if (snmp6_mib_init((void **)idev->stats.icmpv6, sizeof(struct icmpv6_mib), __alignof__(struct icmpv6_mib)) < 0) goto err_icmp; return 0; err_icmp: snmp6_mib_free((void **)idev->stats.ipv6); err_ip: return err; } int snmp6_free_dev(struct inet6_dev *idev) { snmp6_mib_free((void **)idev->stats.icmpv6); snmp6_mib_free((void **)idev->stats.ipv6); return 0; }