mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 16:07:39 +00:00
766e9f1be1
In commit 4ce3c183fc (snmp: 64bit ipstats_mib for all arches), I forgot
to change the /proc/net/dev_snmp6/xxx output for IP counters.
percpu array is 64bit per counter but the folding still used the 'long'
variant, and output garbage on 32bit arches.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
338 lines
10 KiB
C
338 lines
10 KiB
C
/*
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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 (davem@caip.rutgers.edu)
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* YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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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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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 %d memory %d\n",
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ip6_frag_nqueues(net), ip6_frag_mem(net));
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return 0;
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}
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static int sockstat6_seq_open(struct inode *inode, struct file *file)
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{
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return single_open_net(inode, file, sockstat6_seq_show);
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}
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static const struct file_operations sockstat6_seq_fops = {
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.owner = THIS_MODULE,
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.open = sockstat6_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release_net,
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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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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_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_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_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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int i;
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unsigned long val;
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for (i = 0; itemlist[i].name; i++) {
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val = pcpumib ?
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snmp_fold_field(pcpumib, itemlist[i].entry) :
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atomic_long_read(smib + itemlist[i].entry);
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seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, val);
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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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int i;
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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,
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snmp_fold_field64(mib, itemlist[i].entry, syncpoff));
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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, (void __percpu **)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, (void __percpu **)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, (void __percpu **)net->mib.udp_stats_in6,
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NULL, snmp6_udp6_list);
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snmp6_seq_show_item(seq, (void __percpu **)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_seq_open(struct inode *inode, struct file *file)
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{
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return single_open_net(inode, file, snmp6_seq_show);
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}
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static const struct file_operations snmp6_seq_fops = {
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.owner = THIS_MODULE,
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.open = snmp6_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release_net,
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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, (void __percpu **)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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static int snmp6_dev_seq_open(struct inode *inode, struct file *file)
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{
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return single_open(file, snmp6_dev_seq_show, PDE(inode)->data);
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}
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static const struct file_operations snmp6_dev_seq_fops = {
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.owner = THIS_MODULE,
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.open = snmp6_dev_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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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_data(idev->dev->name, S_IRUGO,
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net->mib.proc_net_devsnmp6,
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&snmp6_dev_seq_fops, 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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remove_proc_entry(idev->stats.proc_dir_entry->name,
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net->mib.proc_net_devsnmp6);
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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_net_fops_create(net, "sockstat6", S_IRUGO,
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&sockstat6_seq_fops))
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return -ENOMEM;
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if (!proc_net_fops_create(net, "snmp6", S_IRUGO, &snmp6_seq_fops))
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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_snmp6_fail:
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proc_net_remove(net, "sockstat6");
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proc_dev_snmp6_fail:
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proc_net_remove(net, "dev_snmp6");
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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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proc_net_remove(net, "sockstat6");
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proc_net_remove(net, "dev_snmp6");
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proc_net_remove(net, "snmp6");
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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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