mirror of
https://github.com/edk2-porting/linux-next.git
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67631510a3
Rather than printing the message to the log, use a mib counter to keep track of the count of occurences of time wait bucket overflow. Reduces spam in logs. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
496 lines
17 KiB
C
496 lines
17 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. It is mainly used for debugging and
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* statistics.
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*
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* Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
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* Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
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* Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de>
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*
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* Fixes:
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* Alan Cox : UDP sockets show the rxqueue/txqueue
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* using hint flag for the netinfo.
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* Pauline Middelink : identd support
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* Alan Cox : Make /proc safer.
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* Erik Schoenfelder : /proc/net/snmp
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* Alan Cox : Handle dead sockets properly.
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* Gerhard Koerting : Show both timers
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* Alan Cox : Allow inode to be NULL (kernel socket)
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* Andi Kleen : Add support for open_requests and
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* split functions for more readibility.
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* Andi Kleen : Add support for /proc/net/netstat
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* Arnaldo C. Melo : Convert to seq_file
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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/types.h>
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#include <net/net_namespace.h>
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#include <net/icmp.h>
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#include <net/protocol.h>
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#include <net/tcp.h>
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#include <net/udp.h>
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#include <net/udplite.h>
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#include <linux/bottom_half.h>
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#include <linux/inetdevice.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <net/sock.h>
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#include <net/raw.h>
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/*
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* Report socket allocation statistics [mea@utu.fi]
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*/
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static int sockstat_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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int orphans, sockets;
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local_bh_disable();
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orphans = percpu_counter_sum_positive(&tcp_orphan_count);
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sockets = percpu_counter_sum_positive(&tcp_sockets_allocated);
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local_bh_enable();
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socket_seq_show(seq);
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seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n",
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sock_prot_inuse_get(net, &tcp_prot), orphans,
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tcp_death_row.tw_count, sockets,
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atomic_long_read(&tcp_memory_allocated));
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seq_printf(seq, "UDP: inuse %d mem %ld\n",
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sock_prot_inuse_get(net, &udp_prot),
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atomic_long_read(&udp_memory_allocated));
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seq_printf(seq, "UDPLITE: inuse %d\n",
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sock_prot_inuse_get(net, &udplite_prot));
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seq_printf(seq, "RAW: inuse %d\n",
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sock_prot_inuse_get(net, &raw_prot));
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seq_printf(seq, "FRAG: inuse %d memory %d\n",
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ip_frag_nqueues(net), ip_frag_mem(net));
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return 0;
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}
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static int sockstat_seq_open(struct inode *inode, struct file *file)
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{
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return single_open_net(inode, file, sockstat_seq_show);
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}
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static const struct file_operations sockstat_seq_fops = {
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.owner = THIS_MODULE,
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.open = sockstat_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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/* snmp items */
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static const struct snmp_mib snmp4_ipstats_list[] = {
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SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS),
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SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
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SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
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SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
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SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
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SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
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SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
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SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS),
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SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
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SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
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SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
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SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
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SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
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SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
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SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
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SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
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SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
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SNMP_MIB_SENTINEL
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};
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/* Following RFC4293 items are displayed in /proc/net/netstat */
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static const struct snmp_mib snmp4_ipextstats_list[] = {
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SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
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SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
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SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
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SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
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SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
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SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
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SNMP_MIB_ITEM("InOctets", IPSTATS_MIB_INOCTETS),
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SNMP_MIB_ITEM("OutOctets", IPSTATS_MIB_OUTOCTETS),
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SNMP_MIB_ITEM("InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
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SNMP_MIB_ITEM("OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
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SNMP_MIB_ITEM("InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
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SNMP_MIB_ITEM("OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
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SNMP_MIB_SENTINEL
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};
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static const struct {
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const char *name;
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int index;
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} icmpmibmap[] = {
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{ "DestUnreachs", ICMP_DEST_UNREACH },
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{ "TimeExcds", ICMP_TIME_EXCEEDED },
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{ "ParmProbs", ICMP_PARAMETERPROB },
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{ "SrcQuenchs", ICMP_SOURCE_QUENCH },
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{ "Redirects", ICMP_REDIRECT },
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{ "Echos", ICMP_ECHO },
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{ "EchoReps", ICMP_ECHOREPLY },
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{ "Timestamps", ICMP_TIMESTAMP },
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{ "TimestampReps", ICMP_TIMESTAMPREPLY },
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{ "AddrMasks", ICMP_ADDRESS },
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{ "AddrMaskReps", ICMP_ADDRESSREPLY },
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{ NULL, 0 }
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};
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static const struct snmp_mib snmp4_tcp_list[] = {
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SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
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SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
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SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
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SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
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SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
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SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
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SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
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SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
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SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
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SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
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SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
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SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
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SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
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SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
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SNMP_MIB_SENTINEL
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};
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static const struct snmp_mib snmp4_udp_list[] = {
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SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
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SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
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SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
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SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
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SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
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SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
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SNMP_MIB_SENTINEL
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};
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static const struct snmp_mib snmp4_net_list[] = {
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SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
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SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
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SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
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SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
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SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
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SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
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SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
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SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
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SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
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SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
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SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
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SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
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SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
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SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
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SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
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SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
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SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
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SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
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SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
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SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
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SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
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SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
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SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
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SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
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SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
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SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
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SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
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SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
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SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
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SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
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SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
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SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
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SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
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SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
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SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
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SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
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SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
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SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
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SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
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SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
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SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
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SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
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SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
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SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
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SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
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SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
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SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
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SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
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SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
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SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
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SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
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SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
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SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
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SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
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SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
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SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
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SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
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SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
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SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
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SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
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SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
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SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
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SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
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SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
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SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
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SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
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SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
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SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
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SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
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SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND),
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SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED),
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SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED),
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SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED),
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SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK),
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SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP),
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SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
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SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
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SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
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SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
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SNMP_MIB_SENTINEL
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};
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static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
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unsigned short *type, int count)
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{
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int j;
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if (count) {
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seq_printf(seq, "\nIcmpMsg:");
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for (j = 0; j < count; ++j)
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seq_printf(seq, " %sType%u",
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type[j] & 0x100 ? "Out" : "In",
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type[j] & 0xff);
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seq_printf(seq, "\nIcmpMsg:");
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for (j = 0; j < count; ++j)
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seq_printf(seq, " %lu", vals[j]);
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}
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}
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static void icmpmsg_put(struct seq_file *seq)
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{
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#define PERLINE 16
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int i, count;
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unsigned short type[PERLINE];
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unsigned long vals[PERLINE], val;
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struct net *net = seq->private;
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count = 0;
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for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
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val = snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics, i);
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if (val) {
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type[count] = i;
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vals[count++] = val;
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}
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if (count == PERLINE) {
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icmpmsg_put_line(seq, vals, type, count);
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count = 0;
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}
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}
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icmpmsg_put_line(seq, vals, type, count);
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#undef PERLINE
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}
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static void icmp_put(struct seq_file *seq)
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{
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int i;
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struct net *net = seq->private;
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seq_puts(seq, "\nIcmp: InMsgs InErrors");
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for (i=0; icmpmibmap[i].name != NULL; i++)
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seq_printf(seq, " In%s", icmpmibmap[i].name);
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seq_printf(seq, " OutMsgs OutErrors");
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for (i=0; icmpmibmap[i].name != NULL; i++)
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seq_printf(seq, " Out%s", icmpmibmap[i].name);
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seq_printf(seq, "\nIcmp: %lu %lu",
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snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
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snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INERRORS));
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for (i=0; icmpmibmap[i].name != NULL; i++)
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seq_printf(seq, " %lu",
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snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics,
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icmpmibmap[i].index));
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seq_printf(seq, " %lu %lu",
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snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
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snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
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for (i=0; icmpmibmap[i].name != NULL; i++)
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seq_printf(seq, " %lu",
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snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics,
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icmpmibmap[i].index | 0x100));
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}
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/*
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* Called from the PROCfs module. This outputs /proc/net/snmp.
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*/
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static int snmp_seq_show(struct seq_file *seq, void *v)
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{
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int i;
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struct net *net = seq->private;
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seq_puts(seq, "Ip: Forwarding DefaultTTL");
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for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
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seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
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seq_printf(seq, "\nIp: %d %d",
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IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
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sysctl_ip_default_ttl);
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BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
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for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
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seq_printf(seq, " %llu",
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snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
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snmp4_ipstats_list[i].entry,
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offsetof(struct ipstats_mib, syncp)));
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icmp_put(seq); /* RFC 2011 compatibility */
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icmpmsg_put(seq);
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seq_puts(seq, "\nTcp:");
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for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
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seq_printf(seq, " %s", snmp4_tcp_list[i].name);
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seq_puts(seq, "\nTcp:");
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for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
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/* MaxConn field is signed, RFC 2012 */
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if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
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seq_printf(seq, " %ld",
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snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
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snmp4_tcp_list[i].entry));
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else
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seq_printf(seq, " %lu",
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snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
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snmp4_tcp_list[i].entry));
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}
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seq_puts(seq, "\nUdp:");
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for (i = 0; snmp4_udp_list[i].name != NULL; i++)
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seq_printf(seq, " %s", snmp4_udp_list[i].name);
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seq_puts(seq, "\nUdp:");
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for (i = 0; snmp4_udp_list[i].name != NULL; i++)
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seq_printf(seq, " %lu",
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snmp_fold_field((void __percpu **)net->mib.udp_statistics,
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snmp4_udp_list[i].entry));
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/* the UDP and UDP-Lite MIBs are the same */
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seq_puts(seq, "\nUdpLite:");
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for (i = 0; snmp4_udp_list[i].name != NULL; i++)
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seq_printf(seq, " %s", snmp4_udp_list[i].name);
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seq_puts(seq, "\nUdpLite:");
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for (i = 0; snmp4_udp_list[i].name != NULL; i++)
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seq_printf(seq, " %lu",
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snmp_fold_field((void __percpu **)net->mib.udplite_statistics,
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snmp4_udp_list[i].entry));
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seq_putc(seq, '\n');
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return 0;
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}
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static int snmp_seq_open(struct inode *inode, struct file *file)
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{
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return single_open_net(inode, file, snmp_seq_show);
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}
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static const struct file_operations snmp_seq_fops = {
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.owner = THIS_MODULE,
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.open = snmp_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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/*
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* Output /proc/net/netstat
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*/
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static int netstat_seq_show(struct seq_file *seq, void *v)
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{
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int i;
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struct net *net = seq->private;
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seq_puts(seq, "TcpExt:");
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for (i = 0; snmp4_net_list[i].name != NULL; i++)
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seq_printf(seq, " %s", snmp4_net_list[i].name);
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seq_puts(seq, "\nTcpExt:");
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for (i = 0; snmp4_net_list[i].name != NULL; i++)
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seq_printf(seq, " %lu",
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snmp_fold_field((void __percpu **)net->mib.net_statistics,
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snmp4_net_list[i].entry));
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seq_puts(seq, "\nIpExt:");
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for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
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seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
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seq_puts(seq, "\nIpExt:");
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for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
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seq_printf(seq, " %llu",
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snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
|
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snmp4_ipextstats_list[i].entry,
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offsetof(struct ipstats_mib, syncp)));
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seq_putc(seq, '\n');
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return 0;
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}
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static int netstat_seq_open(struct inode *inode, struct file *file)
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{
|
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return single_open_net(inode, file, netstat_seq_show);
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}
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|
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static const struct file_operations netstat_seq_fops = {
|
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.owner = THIS_MODULE,
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.open = netstat_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 __net_init int ip_proc_init_net(struct net *net)
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{
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if (!proc_net_fops_create(net, "sockstat", S_IRUGO, &sockstat_seq_fops))
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goto out_sockstat;
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if (!proc_net_fops_create(net, "netstat", S_IRUGO, &netstat_seq_fops))
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goto out_netstat;
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if (!proc_net_fops_create(net, "snmp", S_IRUGO, &snmp_seq_fops))
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goto out_snmp;
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return 0;
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out_snmp:
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proc_net_remove(net, "netstat");
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out_netstat:
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proc_net_remove(net, "sockstat");
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out_sockstat:
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return -ENOMEM;
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}
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static __net_exit void ip_proc_exit_net(struct net *net)
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{
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proc_net_remove(net, "snmp");
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proc_net_remove(net, "netstat");
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proc_net_remove(net, "sockstat");
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}
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static __net_initdata struct pernet_operations ip_proc_ops = {
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.init = ip_proc_init_net,
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.exit = ip_proc_exit_net,
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};
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int __init ip_misc_proc_init(void)
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{
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return register_pernet_subsys(&ip_proc_ops);
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}
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