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319 lines
10 KiB
319 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* INET An implementation of the TCP/IP protocol suite for the LINUX |
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* operating system. INET is implemented using the BSD Socket |
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* interface as the means of communication with the user level. |
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* |
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* This file implements the various access functions for the |
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* PROC file system. This is very similar to the IPv4 version, |
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* except it reports the sockets in the INET6 address family. |
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* |
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* Authors: David S. Miller ([email protected]) |
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* YOSHIFUJI Hideaki <[email protected]> |
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*/ |
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#include <linux/socket.h> |
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#include <linux/net.h> |
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#include <linux/ipv6.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include <linux/stddef.h> |
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#include <linux/export.h> |
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#include <net/net_namespace.h> |
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#include <net/ip.h> |
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#include <net/sock.h> |
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#include <net/tcp.h> |
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#include <net/udp.h> |
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#include <net/transp_v6.h> |
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#include <net/ipv6.h> |
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#define MAX4(a, b, c, d) \ |
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max_t(u32, max_t(u32, a, b), max_t(u32, c, d)) |
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#define SNMP_MIB_MAX MAX4(UDP_MIB_MAX, TCP_MIB_MAX, \ |
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IPSTATS_MIB_MAX, ICMP_MIB_MAX) |
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static int sockstat6_seq_show(struct seq_file *seq, void *v) |
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{ |
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struct net *net = seq->private; |
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seq_printf(seq, "TCP6: inuse %d\n", |
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sock_prot_inuse_get(net, &tcpv6_prot)); |
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seq_printf(seq, "UDP6: inuse %d\n", |
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sock_prot_inuse_get(net, &udpv6_prot)); |
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seq_printf(seq, "UDPLITE6: inuse %d\n", |
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sock_prot_inuse_get(net, &udplitev6_prot)); |
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seq_printf(seq, "RAW6: inuse %d\n", |
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sock_prot_inuse_get(net, &rawv6_prot)); |
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seq_printf(seq, "FRAG6: inuse %u memory %lu\n", |
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atomic_read(&net->ipv6.fqdir->rhashtable.nelems), |
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frag_mem_limit(net->ipv6.fqdir)); |
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return 0; |
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} |
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static const struct snmp_mib snmp6_ipstats_list[] = { |
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/* ipv6 mib according to RFC 2465 */ |
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SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS), |
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SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS), |
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SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS), |
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SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES), |
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SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS), |
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SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), |
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SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), |
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SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS), |
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SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS), |
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SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), |
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SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS), |
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SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS), |
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SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), |
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SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), |
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SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS), |
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SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS), |
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SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS), |
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SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS), |
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SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS), |
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SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES), |
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SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS), |
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SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), |
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SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS), |
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SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS), |
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SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS), |
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SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS), |
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SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS), |
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SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS), |
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/* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */ |
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SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS), |
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SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS), |
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SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS), |
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SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS), |
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SNMP_MIB_SENTINEL |
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}; |
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static const struct snmp_mib snmp6_icmp6_list[] = { |
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/* icmpv6 mib according to RFC 2466 */ |
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SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), |
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SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), |
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SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), |
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SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS), |
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SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS), |
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SNMP_MIB_SENTINEL |
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}; |
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/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */ |
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static const char *const icmp6type2name[256] = { |
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[ICMPV6_DEST_UNREACH] = "DestUnreachs", |
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[ICMPV6_PKT_TOOBIG] = "PktTooBigs", |
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[ICMPV6_TIME_EXCEED] = "TimeExcds", |
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[ICMPV6_PARAMPROB] = "ParmProblems", |
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[ICMPV6_ECHO_REQUEST] = "Echos", |
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[ICMPV6_ECHO_REPLY] = "EchoReplies", |
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[ICMPV6_MGM_QUERY] = "GroupMembQueries", |
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[ICMPV6_MGM_REPORT] = "GroupMembResponses", |
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[ICMPV6_MGM_REDUCTION] = "GroupMembReductions", |
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[ICMPV6_MLD2_REPORT] = "MLDv2Reports", |
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[NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements", |
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[NDISC_ROUTER_SOLICITATION] = "RouterSolicits", |
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[NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements", |
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[NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits", |
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[NDISC_REDIRECT] = "Redirects", |
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}; |
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static const struct snmp_mib snmp6_udp6_list[] = { |
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SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS), |
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SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS), |
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SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS), |
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SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS), |
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SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS), |
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SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS), |
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SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS), |
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SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI), |
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SNMP_MIB_ITEM("Udp6MemErrors", UDP_MIB_MEMERRORS), |
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SNMP_MIB_SENTINEL |
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}; |
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static const struct snmp_mib snmp6_udplite6_list[] = { |
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SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS), |
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SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS), |
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SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS), |
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SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS), |
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SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS), |
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SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS), |
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SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS), |
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SNMP_MIB_ITEM("UdpLite6MemErrors", UDP_MIB_MEMERRORS), |
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SNMP_MIB_SENTINEL |
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}; |
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static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib) |
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{ |
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char name[32]; |
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int i; |
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/* print by name -- deprecated items */ |
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for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { |
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int icmptype; |
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const char *p; |
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icmptype = i & 0xff; |
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p = icmp6type2name[icmptype]; |
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if (!p) /* don't print un-named types here */ |
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continue; |
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snprintf(name, sizeof(name), "Icmp6%s%s", |
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i & 0x100 ? "Out" : "In", p); |
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seq_printf(seq, "%-32s\t%lu\n", name, |
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atomic_long_read(smib + i)); |
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} |
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/* print by number (nonzero only) - ICMPMsgStat format */ |
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for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { |
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unsigned long val; |
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val = atomic_long_read(smib + i); |
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if (!val) |
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continue; |
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snprintf(name, sizeof(name), "Icmp6%sType%u", |
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i & 0x100 ? "Out" : "In", i & 0xff); |
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seq_printf(seq, "%-32s\t%lu\n", name, val); |
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} |
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} |
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/* can be called either with percpu mib (pcpumib != NULL), |
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* or shared one (smib != NULL) |
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*/ |
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static void snmp6_seq_show_item(struct seq_file *seq, void __percpu *pcpumib, |
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atomic_long_t *smib, |
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const struct snmp_mib *itemlist) |
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{ |
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unsigned long buff[SNMP_MIB_MAX]; |
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int i; |
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if (pcpumib) { |
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memset(buff, 0, sizeof(unsigned long) * SNMP_MIB_MAX); |
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snmp_get_cpu_field_batch(buff, itemlist, pcpumib); |
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for (i = 0; itemlist[i].name; i++) |
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seq_printf(seq, "%-32s\t%lu\n", |
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itemlist[i].name, buff[i]); |
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} else { |
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for (i = 0; itemlist[i].name; i++) |
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seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, |
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atomic_long_read(smib + itemlist[i].entry)); |
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} |
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} |
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static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib, |
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const struct snmp_mib *itemlist, size_t syncpoff) |
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{ |
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u64 buff64[SNMP_MIB_MAX]; |
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int i; |
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memset(buff64, 0, sizeof(u64) * SNMP_MIB_MAX); |
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snmp_get_cpu_field64_batch(buff64, itemlist, mib, syncpoff); |
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for (i = 0; itemlist[i].name; i++) |
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seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]); |
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} |
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static int snmp6_seq_show(struct seq_file *seq, void *v) |
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{ |
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struct net *net = (struct net *)seq->private; |
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snmp6_seq_show_item64(seq, net->mib.ipv6_statistics, |
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snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp)); |
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snmp6_seq_show_item(seq, net->mib.icmpv6_statistics, |
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NULL, snmp6_icmp6_list); |
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snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs); |
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snmp6_seq_show_item(seq, net->mib.udp_stats_in6, |
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NULL, snmp6_udp6_list); |
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snmp6_seq_show_item(seq, net->mib.udplite_stats_in6, |
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NULL, snmp6_udplite6_list); |
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return 0; |
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} |
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static int snmp6_dev_seq_show(struct seq_file *seq, void *v) |
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{ |
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struct inet6_dev *idev = (struct inet6_dev *)seq->private; |
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seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); |
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snmp6_seq_show_item64(seq, idev->stats.ipv6, |
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snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp)); |
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snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs, |
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snmp6_icmp6_list); |
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snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs); |
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return 0; |
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} |
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int snmp6_register_dev(struct inet6_dev *idev) |
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{ |
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struct proc_dir_entry *p; |
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struct net *net; |
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if (!idev || !idev->dev) |
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return -EINVAL; |
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net = dev_net(idev->dev); |
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if (!net->mib.proc_net_devsnmp6) |
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return -ENOENT; |
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p = proc_create_single_data(idev->dev->name, 0444, |
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net->mib.proc_net_devsnmp6, snmp6_dev_seq_show, idev); |
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if (!p) |
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return -ENOMEM; |
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idev->stats.proc_dir_entry = p; |
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return 0; |
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} |
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int snmp6_unregister_dev(struct inet6_dev *idev) |
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{ |
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struct net *net = dev_net(idev->dev); |
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if (!net->mib.proc_net_devsnmp6) |
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return -ENOENT; |
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if (!idev->stats.proc_dir_entry) |
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return -EINVAL; |
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proc_remove(idev->stats.proc_dir_entry); |
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idev->stats.proc_dir_entry = NULL; |
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return 0; |
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} |
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static int __net_init ipv6_proc_init_net(struct net *net) |
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{ |
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if (!proc_create_net_single("sockstat6", 0444, net->proc_net, |
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sockstat6_seq_show, NULL)) |
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return -ENOMEM; |
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if (!proc_create_net_single("snmp6", 0444, net->proc_net, |
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snmp6_seq_show, NULL)) |
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goto proc_snmp6_fail; |
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net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net); |
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if (!net->mib.proc_net_devsnmp6) |
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goto proc_dev_snmp6_fail; |
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return 0; |
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proc_dev_snmp6_fail: |
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remove_proc_entry("snmp6", net->proc_net); |
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proc_snmp6_fail: |
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remove_proc_entry("sockstat6", net->proc_net); |
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return -ENOMEM; |
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} |
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static void __net_exit ipv6_proc_exit_net(struct net *net) |
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{ |
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remove_proc_entry("sockstat6", net->proc_net); |
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remove_proc_entry("dev_snmp6", net->proc_net); |
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remove_proc_entry("snmp6", net->proc_net); |
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} |
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static struct pernet_operations ipv6_proc_ops = { |
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.init = ipv6_proc_init_net, |
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.exit = ipv6_proc_exit_net, |
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}; |
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int __init ipv6_misc_proc_init(void) |
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{ |
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return register_pernet_subsys(&ipv6_proc_ops); |
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} |
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void ipv6_misc_proc_exit(void) |
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{ |
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unregister_pernet_subsys(&ipv6_proc_ops); |
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}
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