2005-04-16 16:20:36 -06:00
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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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* Version: $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $
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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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2007-09-12 04:01:34 -06:00
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#include <net/net_namespace.h>
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2007-04-24 22:54:09 -06:00
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#include <net/ip.h>
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2005-04-16 16:20:36 -06:00
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#include <net/sock.h>
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#include <net/tcp.h>
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2007-12-11 12:30:32 -07:00
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#include <net/udp.h>
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2005-04-16 16:20:36 -06:00
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#include <net/transp_v6.h>
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#include <net/ipv6.h>
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static struct proc_dir_entry *proc_net_devsnmp6;
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static int sockstat6_seq_show(struct seq_file *seq, void *v)
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{
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seq_printf(seq, "TCP6: inuse %d\n",
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[NET]: Define infrastructure to keep 'inuse' changes in an efficent SMP/NUMA way.
"struct proto" currently uses an array stats[NR_CPUS] to track change on
'inuse' sockets per protocol.
If NR_CPUS is big, this means we use a big memory area for this.
Moreover, all this memory area is located on a single node on NUMA
machines, increasing memory pressure on the boot node.
In this patch, I tried to :
- Keep a fast !CONFIG_SMP implementation
- Keep a fast CONFIG_SMP implementation for often used protocols
(tcp,udp,raw,...)
- Introduce a NUMA efficient implementation
Some helper macros are defined in include/net/sock.h
These macros take into account CONFIG_SMP
If a "struct proto" is declared without using DEFINE_PROTO_INUSE /
REF_PROTO_INUSE
macros, it will automatically use a default implementation, using a
dynamically allocated percpu zone.
This default implementation will be NUMA efficient, but might use 32/64
bytes per possible cpu
because of current alloc_percpu() implementation.
However it still should be better than previous implementation based on
stats[NR_CPUS] field.
When a "struct proto" is changed to use the new macros, we use a single
static "int" percpu variable,
lowering the memory and cpu costs, still preserving NUMA efficiency.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-06 00:38:39 -07:00
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sock_prot_inuse(&tcpv6_prot));
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2005-04-16 16:20:36 -06:00
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seq_printf(seq, "UDP6: inuse %d\n",
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[NET]: Define infrastructure to keep 'inuse' changes in an efficent SMP/NUMA way.
"struct proto" currently uses an array stats[NR_CPUS] to track change on
'inuse' sockets per protocol.
If NR_CPUS is big, this means we use a big memory area for this.
Moreover, all this memory area is located on a single node on NUMA
machines, increasing memory pressure on the boot node.
In this patch, I tried to :
- Keep a fast !CONFIG_SMP implementation
- Keep a fast CONFIG_SMP implementation for often used protocols
(tcp,udp,raw,...)
- Introduce a NUMA efficient implementation
Some helper macros are defined in include/net/sock.h
These macros take into account CONFIG_SMP
If a "struct proto" is declared without using DEFINE_PROTO_INUSE /
REF_PROTO_INUSE
macros, it will automatically use a default implementation, using a
dynamically allocated percpu zone.
This default implementation will be NUMA efficient, but might use 32/64
bytes per possible cpu
because of current alloc_percpu() implementation.
However it still should be better than previous implementation based on
stats[NR_CPUS] field.
When a "struct proto" is changed to use the new macros, we use a single
static "int" percpu variable,
lowering the memory and cpu costs, still preserving NUMA efficiency.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-06 00:38:39 -07:00
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sock_prot_inuse(&udpv6_prot));
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2006-11-27 12:10:57 -07:00
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seq_printf(seq, "UDPLITE6: inuse %d\n",
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[NET]: Define infrastructure to keep 'inuse' changes in an efficent SMP/NUMA way.
"struct proto" currently uses an array stats[NR_CPUS] to track change on
'inuse' sockets per protocol.
If NR_CPUS is big, this means we use a big memory area for this.
Moreover, all this memory area is located on a single node on NUMA
machines, increasing memory pressure on the boot node.
In this patch, I tried to :
- Keep a fast !CONFIG_SMP implementation
- Keep a fast CONFIG_SMP implementation for often used protocols
(tcp,udp,raw,...)
- Introduce a NUMA efficient implementation
Some helper macros are defined in include/net/sock.h
These macros take into account CONFIG_SMP
If a "struct proto" is declared without using DEFINE_PROTO_INUSE /
REF_PROTO_INUSE
macros, it will automatically use a default implementation, using a
dynamically allocated percpu zone.
This default implementation will be NUMA efficient, but might use 32/64
bytes per possible cpu
because of current alloc_percpu() implementation.
However it still should be better than previous implementation based on
stats[NR_CPUS] field.
When a "struct proto" is changed to use the new macros, we use a single
static "int" percpu variable,
lowering the memory and cpu costs, still preserving NUMA efficiency.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-06 00:38:39 -07:00
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sock_prot_inuse(&udplitev6_prot));
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2005-04-16 16:20:36 -06:00
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seq_printf(seq, "RAW6: inuse %d\n",
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[NET]: Define infrastructure to keep 'inuse' changes in an efficent SMP/NUMA way.
"struct proto" currently uses an array stats[NR_CPUS] to track change on
'inuse' sockets per protocol.
If NR_CPUS is big, this means we use a big memory area for this.
Moreover, all this memory area is located on a single node on NUMA
machines, increasing memory pressure on the boot node.
In this patch, I tried to :
- Keep a fast !CONFIG_SMP implementation
- Keep a fast CONFIG_SMP implementation for often used protocols
(tcp,udp,raw,...)
- Introduce a NUMA efficient implementation
Some helper macros are defined in include/net/sock.h
These macros take into account CONFIG_SMP
If a "struct proto" is declared without using DEFINE_PROTO_INUSE /
REF_PROTO_INUSE
macros, it will automatically use a default implementation, using a
dynamically allocated percpu zone.
This default implementation will be NUMA efficient, but might use 32/64
bytes per possible cpu
because of current alloc_percpu() implementation.
However it still should be better than previous implementation based on
stats[NR_CPUS] field.
When a "struct proto" is changed to use the new macros, we use a single
static "int" percpu variable,
lowering the memory and cpu costs, still preserving NUMA efficiency.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-06 00:38:39 -07:00
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sock_prot_inuse(&rawv6_prot));
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2005-04-16 16:20:36 -06:00
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seq_printf(seq, "FRAG6: inuse %d memory %d\n",
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2007-10-15 03:31:52 -06:00
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ip6_frag_nqueues(), ip6_frag_mem());
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2005-04-16 16:20:36 -06:00
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return 0;
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}
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static 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_INRECEIVES),
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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_OUTREQUESTS),
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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_SENTINEL
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};
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static struct snmp_mib snmp6_icmp6_list[] = {
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2007-09-16 17:52:35 -06:00
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/* icmpv6 mib according to RFC 2466 */
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2005-04-16 16:20:36 -06:00
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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_SENTINEL
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};
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2007-09-16 17:52:35 -06:00
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/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
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static char *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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2008-01-21 04:05:43 -07:00
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[ICMPV6_ECHO_REQUEST] = "Echos",
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2007-09-16 17:52:35 -06:00
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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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2008-01-21 04:05:43 -07:00
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[NDISC_REDIRECT] = "Redirects",
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2007-09-16 17:52:35 -06:00
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};
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2005-04-16 16:20:36 -06:00
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static 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_SENTINEL
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};
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2006-11-27 12:10:57 -07:00
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static 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_SENTINEL
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};
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2007-09-16 17:52:35 -06:00
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static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
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{
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static 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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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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(void) snprintf(name, sizeof(name)-1, "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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snmp_fold_field(mib, 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 = snmp_fold_field(mib, i);
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if (!val)
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continue;
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(void) snprintf(name, sizeof(name)-1, "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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return;
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}
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2005-04-16 16:20:36 -06:00
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static inline void
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snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
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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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2007-02-09 07:24:49 -07:00
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seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
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2007-04-24 22:54:09 -06:00
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snmp_fold_field(mib, itemlist[i].entry));
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2005-04-16 16:20:36 -06:00
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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 inet6_dev *idev = (struct inet6_dev *)seq->private;
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if (idev) {
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seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
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2006-11-04 04:11:37 -07:00
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snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list);
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2005-04-16 16:20:36 -06:00
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snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
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2007-09-16 17:52:35 -06:00
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snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg);
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2005-04-16 16:20:36 -06:00
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} else {
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snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list);
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snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
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2007-09-16 17:52:35 -06:00
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snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics);
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2005-04-16 16:20:36 -06:00
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snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
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2006-11-27 12:10:57 -07:00
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snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list);
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2005-04-16 16:20:36 -06:00
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}
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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(file, sockstat6_seq_show, NULL);
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}
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2007-02-12 01:55:35 -07:00
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static const struct file_operations sockstat6_seq_fops = {
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2005-04-16 16:20:36 -06:00
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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,
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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(file, snmp6_seq_show, PDE(inode)->data);
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}
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2007-02-12 01:55:35 -07:00
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static const struct file_operations snmp6_seq_fops = {
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2005-04-16 16:20:36 -06:00
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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,
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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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if (!idev || !idev->dev)
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return -EINVAL;
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|
|
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);
|
2007-04-28 22:16:39 -06:00
|
|
|
idev->stats.proc_dir_entry = NULL;
|
2005-04-16 16:20:36 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int __init ipv6_misc_proc_init(void)
|
|
|
|
{
|
|
|
|
int rc = 0;
|
|
|
|
|
2007-09-12 04:01:34 -06:00
|
|
|
if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops))
|
2005-04-16 16:20:36 -06:00
|
|
|
goto proc_snmp6_fail;
|
|
|
|
|
2007-09-12 04:01:34 -06:00
|
|
|
proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (!proc_net_devsnmp6)
|
|
|
|
goto proc_dev_snmp6_fail;
|
|
|
|
|
2007-09-12 04:01:34 -06:00
|
|
|
if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops))
|
2005-04-16 16:20:36 -06:00
|
|
|
goto proc_sockstat6_fail;
|
|
|
|
out:
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
proc_sockstat6_fail:
|
2007-09-12 04:01:34 -06:00
|
|
|
proc_net_remove(&init_net, "dev_snmp6");
|
2005-04-16 16:20:36 -06:00
|
|
|
proc_dev_snmp6_fail:
|
2007-09-12 04:01:34 -06:00
|
|
|
proc_net_remove(&init_net, "snmp6");
|
2005-04-16 16:20:36 -06:00
|
|
|
proc_snmp6_fail:
|
|
|
|
rc = -ENOMEM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipv6_misc_proc_exit(void)
|
|
|
|
{
|
2007-09-12 04:01:34 -06:00
|
|
|
proc_net_remove(&init_net, "sockstat6");
|
|
|
|
proc_net_remove(&init_net, "dev_snmp6");
|
|
|
|
proc_net_remove(&init_net, "snmp6");
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|