1 /* 2 * INET An implementation of the TCP/IP protocol suite for the LINUX 3 * operating system. INET is implemented using the BSD Socket 4 * interface as the means of communication with the user level. 5 * 6 * This file implements the various access functions for the 7 * PROC file system. It is mainly used for debugging and 8 * statistics. 9 * 10 * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 11 * Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de> 12 * Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de> 13 * Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de> 14 * 15 * Fixes: 16 * Alan Cox : UDP sockets show the rxqueue/txqueue 17 * using hint flag for the netinfo. 18 * Pauline Middelink : identd support 19 * Alan Cox : Make /proc safer. 20 * Erik Schoenfelder : /proc/net/snmp 21 * Alan Cox : Handle dead sockets properly. 22 * Gerhard Koerting : Show both timers 23 * Alan Cox : Allow inode to be NULL (kernel socket) 24 * Andi Kleen : Add support for open_requests and 25 * split functions for more readibility. 26 * Andi Kleen : Add support for /proc/net/netstat 27 * Arnaldo C. Melo : Convert to seq_file 28 * 29 * This program is free software; you can redistribute it and/or 30 * modify it under the terms of the GNU General Public License 31 * as published by the Free Software Foundation; either version 32 * 2 of the License, or (at your option) any later version. 33 */ 34 #include <linux/types.h> 35 #include <net/net_namespace.h> 36 #include <net/icmp.h> 37 #include <net/protocol.h> 38 #include <net/tcp.h> 39 #include <net/udp.h> 40 #include <net/udplite.h> 41 #include <linux/bottom_half.h> 42 #include <linux/inetdevice.h> 43 #include <linux/proc_fs.h> 44 #include <linux/seq_file.h> 45 #include <linux/export.h> 46 #include <net/sock.h> 47 #include <net/raw.h> 48 49 /* 50 * Report socket allocation statistics [mea@utu.fi] 51 */ 52 static int sockstat_seq_show(struct seq_file *seq, void *v) 53 { 54 struct net *net = seq->private; 55 int orphans, sockets; 56 57 local_bh_disable(); 58 orphans = percpu_counter_sum_positive(&tcp_orphan_count); 59 sockets = proto_sockets_allocated_sum_positive(&tcp_prot); 60 local_bh_enable(); 61 62 socket_seq_show(seq); 63 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n", 64 sock_prot_inuse_get(net, &tcp_prot), orphans, 65 tcp_death_row.tw_count, sockets, 66 proto_memory_allocated(&tcp_prot)); 67 seq_printf(seq, "UDP: inuse %d mem %ld\n", 68 sock_prot_inuse_get(net, &udp_prot), 69 proto_memory_allocated(&udp_prot)); 70 seq_printf(seq, "UDPLITE: inuse %d\n", 71 sock_prot_inuse_get(net, &udplite_prot)); 72 seq_printf(seq, "RAW: inuse %d\n", 73 sock_prot_inuse_get(net, &raw_prot)); 74 seq_printf(seq, "FRAG: inuse %d memory %d\n", 75 ip_frag_nqueues(net), ip_frag_mem(net)); 76 return 0; 77 } 78 79 static int sockstat_seq_open(struct inode *inode, struct file *file) 80 { 81 return single_open_net(inode, file, sockstat_seq_show); 82 } 83 84 static const struct file_operations sockstat_seq_fops = { 85 .owner = THIS_MODULE, 86 .open = sockstat_seq_open, 87 .read = seq_read, 88 .llseek = seq_lseek, 89 .release = single_release_net, 90 }; 91 92 /* snmp items */ 93 static const struct snmp_mib snmp4_ipstats_list[] = { 94 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS), 95 SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS), 96 SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS), 97 SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), 98 SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), 99 SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS), 100 SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS), 101 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS), 102 SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS), 103 SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), 104 SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), 105 SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS), 106 SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS), 107 SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS), 108 SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS), 109 SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS), 110 SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES), 111 SNMP_MIB_SENTINEL 112 }; 113 114 /* Following RFC4293 items are displayed in /proc/net/netstat */ 115 static const struct snmp_mib snmp4_ipextstats_list[] = { 116 SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES), 117 SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), 118 SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS), 119 SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), 120 SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS), 121 SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS), 122 SNMP_MIB_ITEM("InOctets", IPSTATS_MIB_INOCTETS), 123 SNMP_MIB_ITEM("OutOctets", IPSTATS_MIB_OUTOCTETS), 124 SNMP_MIB_ITEM("InMcastOctets", IPSTATS_MIB_INMCASTOCTETS), 125 SNMP_MIB_ITEM("OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS), 126 SNMP_MIB_ITEM("InBcastOctets", IPSTATS_MIB_INBCASTOCTETS), 127 SNMP_MIB_ITEM("OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS), 128 SNMP_MIB_ITEM("InCsumErrors", IPSTATS_MIB_CSUMERRORS), 129 SNMP_MIB_SENTINEL 130 }; 131 132 static const struct { 133 const char *name; 134 int index; 135 } icmpmibmap[] = { 136 { "DestUnreachs", ICMP_DEST_UNREACH }, 137 { "TimeExcds", ICMP_TIME_EXCEEDED }, 138 { "ParmProbs", ICMP_PARAMETERPROB }, 139 { "SrcQuenchs", ICMP_SOURCE_QUENCH }, 140 { "Redirects", ICMP_REDIRECT }, 141 { "Echos", ICMP_ECHO }, 142 { "EchoReps", ICMP_ECHOREPLY }, 143 { "Timestamps", ICMP_TIMESTAMP }, 144 { "TimestampReps", ICMP_TIMESTAMPREPLY }, 145 { "AddrMasks", ICMP_ADDRESS }, 146 { "AddrMaskReps", ICMP_ADDRESSREPLY }, 147 { NULL, 0 } 148 }; 149 150 151 static const struct snmp_mib snmp4_tcp_list[] = { 152 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM), 153 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN), 154 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX), 155 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN), 156 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS), 157 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS), 158 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS), 159 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS), 160 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB), 161 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS), 162 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS), 163 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS), 164 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS), 165 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS), 166 SNMP_MIB_ITEM("InCsumErrors", TCP_MIB_CSUMERRORS), 167 SNMP_MIB_SENTINEL 168 }; 169 170 static const struct snmp_mib snmp4_udp_list[] = { 171 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS), 172 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS), 173 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS), 174 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS), 175 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS), 176 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS), 177 SNMP_MIB_ITEM("InCsumErrors", UDP_MIB_CSUMERRORS), 178 SNMP_MIB_SENTINEL 179 }; 180 181 static const struct snmp_mib snmp4_net_list[] = { 182 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT), 183 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV), 184 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED), 185 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS), 186 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED), 187 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED), 188 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED), 189 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS), 190 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS), 191 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER), 192 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED), 193 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED), 194 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED), 195 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED), 196 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED), 197 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED), 198 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS), 199 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED), 200 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST), 201 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS), 202 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS), 203 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED), 204 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG), 205 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE), 206 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED), 207 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS), 208 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER), 209 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS), 210 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS), 211 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY), 212 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY), 213 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING), 214 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER), 215 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER), 216 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER), 217 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER), 218 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO), 219 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO), 220 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO), 221 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO), 222 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT), 223 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES), 224 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES), 225 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES), 226 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS), 227 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS), 228 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS), 229 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS), 230 SNMP_MIB_ITEM("TCPLossProbes", LINUX_MIB_TCPLOSSPROBES), 231 SNMP_MIB_ITEM("TCPLossProbeRecovery", LINUX_MIB_TCPLOSSPROBERECOVERY), 232 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL), 233 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL), 234 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED), 235 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED), 236 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT), 237 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT), 238 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV), 239 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV), 240 SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA), 241 SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE), 242 SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY), 243 SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT), 244 SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER), 245 SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED), 246 SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES), 247 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD), 248 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD), 249 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO), 250 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS), 251 SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND), 252 SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED), 253 SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED), 254 SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED), 255 SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK), 256 SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP), 257 SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP), 258 SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP), 259 SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER), 260 SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW), 261 SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES), 262 SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP), 263 SNMP_MIB_ITEM("TCPRetransFail", LINUX_MIB_TCPRETRANSFAIL), 264 SNMP_MIB_ITEM("TCPRcvCoalesce", LINUX_MIB_TCPRCVCOALESCE), 265 SNMP_MIB_ITEM("TCPOFOQueue", LINUX_MIB_TCPOFOQUEUE), 266 SNMP_MIB_ITEM("TCPOFODrop", LINUX_MIB_TCPOFODROP), 267 SNMP_MIB_ITEM("TCPOFOMerge", LINUX_MIB_TCPOFOMERGE), 268 SNMP_MIB_ITEM("TCPChallengeACK", LINUX_MIB_TCPCHALLENGEACK), 269 SNMP_MIB_ITEM("TCPSYNChallenge", LINUX_MIB_TCPSYNCHALLENGE), 270 SNMP_MIB_ITEM("TCPFastOpenActive", LINUX_MIB_TCPFASTOPENACTIVE), 271 SNMP_MIB_ITEM("TCPFastOpenPassive", LINUX_MIB_TCPFASTOPENPASSIVE), 272 SNMP_MIB_ITEM("TCPFastOpenPassiveFail", LINUX_MIB_TCPFASTOPENPASSIVEFAIL), 273 SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW), 274 SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD), 275 SNMP_MIB_ITEM("TCPSpuriousRtxHostQueues", LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES), 276 SNMP_MIB_SENTINEL 277 }; 278 279 static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals, 280 unsigned short *type, int count) 281 { 282 int j; 283 284 if (count) { 285 seq_printf(seq, "\nIcmpMsg:"); 286 for (j = 0; j < count; ++j) 287 seq_printf(seq, " %sType%u", 288 type[j] & 0x100 ? "Out" : "In", 289 type[j] & 0xff); 290 seq_printf(seq, "\nIcmpMsg:"); 291 for (j = 0; j < count; ++j) 292 seq_printf(seq, " %lu", vals[j]); 293 } 294 } 295 296 static void icmpmsg_put(struct seq_file *seq) 297 { 298 #define PERLINE 16 299 300 int i, count; 301 unsigned short type[PERLINE]; 302 unsigned long vals[PERLINE], val; 303 struct net *net = seq->private; 304 305 count = 0; 306 for (i = 0; i < ICMPMSG_MIB_MAX; i++) { 307 val = atomic_long_read(&net->mib.icmpmsg_statistics->mibs[i]); 308 if (val) { 309 type[count] = i; 310 vals[count++] = val; 311 } 312 if (count == PERLINE) { 313 icmpmsg_put_line(seq, vals, type, count); 314 count = 0; 315 } 316 } 317 icmpmsg_put_line(seq, vals, type, count); 318 319 #undef PERLINE 320 } 321 322 static void icmp_put(struct seq_file *seq) 323 { 324 int i; 325 struct net *net = seq->private; 326 atomic_long_t *ptr = net->mib.icmpmsg_statistics->mibs; 327 328 seq_puts(seq, "\nIcmp: InMsgs InErrors InCsumErrors"); 329 for (i=0; icmpmibmap[i].name != NULL; i++) 330 seq_printf(seq, " In%s", icmpmibmap[i].name); 331 seq_printf(seq, " OutMsgs OutErrors"); 332 for (i=0; icmpmibmap[i].name != NULL; i++) 333 seq_printf(seq, " Out%s", icmpmibmap[i].name); 334 seq_printf(seq, "\nIcmp: %lu %lu %lu", 335 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INMSGS), 336 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INERRORS), 337 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_CSUMERRORS)); 338 for (i=0; icmpmibmap[i].name != NULL; i++) 339 seq_printf(seq, " %lu", 340 atomic_long_read(ptr + icmpmibmap[i].index)); 341 seq_printf(seq, " %lu %lu", 342 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS), 343 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS)); 344 for (i=0; icmpmibmap[i].name != NULL; i++) 345 seq_printf(seq, " %lu", 346 atomic_long_read(ptr + (icmpmibmap[i].index | 0x100))); 347 } 348 349 /* 350 * Called from the PROCfs module. This outputs /proc/net/snmp. 351 */ 352 static int snmp_seq_show(struct seq_file *seq, void *v) 353 { 354 int i; 355 struct net *net = seq->private; 356 357 seq_puts(seq, "Ip: Forwarding DefaultTTL"); 358 359 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++) 360 seq_printf(seq, " %s", snmp4_ipstats_list[i].name); 361 362 seq_printf(seq, "\nIp: %d %d", 363 IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2, 364 sysctl_ip_default_ttl); 365 366 BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0); 367 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++) 368 seq_printf(seq, " %llu", 369 snmp_fold_field64((void __percpu **)net->mib.ip_statistics, 370 snmp4_ipstats_list[i].entry, 371 offsetof(struct ipstats_mib, syncp))); 372 373 icmp_put(seq); /* RFC 2011 compatibility */ 374 icmpmsg_put(seq); 375 376 seq_puts(seq, "\nTcp:"); 377 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) 378 seq_printf(seq, " %s", snmp4_tcp_list[i].name); 379 380 seq_puts(seq, "\nTcp:"); 381 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) { 382 /* MaxConn field is signed, RFC 2012 */ 383 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN) 384 seq_printf(seq, " %ld", 385 snmp_fold_field((void __percpu **)net->mib.tcp_statistics, 386 snmp4_tcp_list[i].entry)); 387 else 388 seq_printf(seq, " %lu", 389 snmp_fold_field((void __percpu **)net->mib.tcp_statistics, 390 snmp4_tcp_list[i].entry)); 391 } 392 393 seq_puts(seq, "\nUdp:"); 394 for (i = 0; snmp4_udp_list[i].name != NULL; i++) 395 seq_printf(seq, " %s", snmp4_udp_list[i].name); 396 397 seq_puts(seq, "\nUdp:"); 398 for (i = 0; snmp4_udp_list[i].name != NULL; i++) 399 seq_printf(seq, " %lu", 400 snmp_fold_field((void __percpu **)net->mib.udp_statistics, 401 snmp4_udp_list[i].entry)); 402 403 /* the UDP and UDP-Lite MIBs are the same */ 404 seq_puts(seq, "\nUdpLite:"); 405 for (i = 0; snmp4_udp_list[i].name != NULL; i++) 406 seq_printf(seq, " %s", snmp4_udp_list[i].name); 407 408 seq_puts(seq, "\nUdpLite:"); 409 for (i = 0; snmp4_udp_list[i].name != NULL; i++) 410 seq_printf(seq, " %lu", 411 snmp_fold_field((void __percpu **)net->mib.udplite_statistics, 412 snmp4_udp_list[i].entry)); 413 414 seq_putc(seq, '\n'); 415 return 0; 416 } 417 418 static int snmp_seq_open(struct inode *inode, struct file *file) 419 { 420 return single_open_net(inode, file, snmp_seq_show); 421 } 422 423 static const struct file_operations snmp_seq_fops = { 424 .owner = THIS_MODULE, 425 .open = snmp_seq_open, 426 .read = seq_read, 427 .llseek = seq_lseek, 428 .release = single_release_net, 429 }; 430 431 432 433 /* 434 * Output /proc/net/netstat 435 */ 436 static int netstat_seq_show(struct seq_file *seq, void *v) 437 { 438 int i; 439 struct net *net = seq->private; 440 441 seq_puts(seq, "TcpExt:"); 442 for (i = 0; snmp4_net_list[i].name != NULL; i++) 443 seq_printf(seq, " %s", snmp4_net_list[i].name); 444 445 seq_puts(seq, "\nTcpExt:"); 446 for (i = 0; snmp4_net_list[i].name != NULL; i++) 447 seq_printf(seq, " %lu", 448 snmp_fold_field((void __percpu **)net->mib.net_statistics, 449 snmp4_net_list[i].entry)); 450 451 seq_puts(seq, "\nIpExt:"); 452 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++) 453 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name); 454 455 seq_puts(seq, "\nIpExt:"); 456 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++) 457 seq_printf(seq, " %llu", 458 snmp_fold_field64((void __percpu **)net->mib.ip_statistics, 459 snmp4_ipextstats_list[i].entry, 460 offsetof(struct ipstats_mib, syncp))); 461 462 seq_putc(seq, '\n'); 463 return 0; 464 } 465 466 static int netstat_seq_open(struct inode *inode, struct file *file) 467 { 468 return single_open_net(inode, file, netstat_seq_show); 469 } 470 471 static const struct file_operations netstat_seq_fops = { 472 .owner = THIS_MODULE, 473 .open = netstat_seq_open, 474 .read = seq_read, 475 .llseek = seq_lseek, 476 .release = single_release_net, 477 }; 478 479 static __net_init int ip_proc_init_net(struct net *net) 480 { 481 if (!proc_create("sockstat", S_IRUGO, net->proc_net, 482 &sockstat_seq_fops)) 483 goto out_sockstat; 484 if (!proc_create("netstat", S_IRUGO, net->proc_net, &netstat_seq_fops)) 485 goto out_netstat; 486 if (!proc_create("snmp", S_IRUGO, net->proc_net, &snmp_seq_fops)) 487 goto out_snmp; 488 489 return 0; 490 491 out_snmp: 492 remove_proc_entry("netstat", net->proc_net); 493 out_netstat: 494 remove_proc_entry("sockstat", net->proc_net); 495 out_sockstat: 496 return -ENOMEM; 497 } 498 499 static __net_exit void ip_proc_exit_net(struct net *net) 500 { 501 remove_proc_entry("snmp", net->proc_net); 502 remove_proc_entry("netstat", net->proc_net); 503 remove_proc_entry("sockstat", net->proc_net); 504 } 505 506 static __net_initdata struct pernet_operations ip_proc_ops = { 507 .init = ip_proc_init_net, 508 .exit = ip_proc_exit_net, 509 }; 510 511 int __init ip_misc_proc_init(void) 512 { 513 return register_pernet_subsys(&ip_proc_ops); 514 } 515 516