net/netfilter/nf_conntrack_standalone.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/types.h>
   3 #include <linux/netfilter.h>
   4 #include <linux/slab.h>
   5 #include <linux/module.h>
   6 #include <linux/skbuff.h>
   7 #include <linux/proc_fs.h>
   8 #include <linux/seq_file.h>
   9 #include <linux/percpu.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/security.h>
  12 #include <net/net_namespace.h>
  13 #ifdef CONFIG_SYSCTL
  14 #include <linux/sysctl.h>
  15 #endif
  16
  17 #include <net/netfilter/nf_conntrack.h>
  18 #include <net/netfilter/nf_conntrack_core.h>
  19 #include <net/netfilter/nf_conntrack_l4proto.h>
  20 #include <net/netfilter/nf_conntrack_expect.h>
  21 #include <net/netfilter/nf_conntrack_helper.h>
  22 #include <net/netfilter/nf_conntrack_acct.h>
  23 #include <net/netfilter/nf_conntrack_zones.h>
  24 #include <net/netfilter/nf_conntrack_timestamp.h>
  25 #ifdef CONFIG_LWTUNNEL
  26 #include <net/netfilter/nf_hooks_lwtunnel.h>
  27 #endif
  28 #include <linux/rculist_nulls.h>
  29
  30 static bool enable_hooks __read_mostly;
  31 MODULE_PARM_DESC(enable_hooks, "Always enable conntrack hooks");
  32 module_param(enable_hooks, bool, 0000);
  33
  34 unsigned int nf_conntrack_net_id __read_mostly;
  35
  36 #ifdef CONFIG_NF_CONNTRACK_PROCFS
  37 void
  38 print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
  39             const struct nf_conntrack_l4proto *l4proto)
  40 {
  41         switch (tuple->src.l3num) {
  42         case NFPROTO_IPV4:
  43                 seq_printf(s, "src=%pI4 dst=%pI4 ",
  44                            &tuple->src.u3.ip, &tuple->dst.u3.ip);
  45                 break;
  46         case NFPROTO_IPV6:
  47                 seq_printf(s, "src=%pI6 dst=%pI6 ",
  48                            tuple->src.u3.ip6, tuple->dst.u3.ip6);
  49                 break;
  50         default:
  51                 break;
  52         }
  53
  54         switch (l4proto->l4proto) {
  55         case IPPROTO_ICMP:
  56                 seq_printf(s, "type=%u code=%u id=%u ",
  57                            tuple->dst.u.icmp.type,
  58                            tuple->dst.u.icmp.code,
  59                            ntohs(tuple->src.u.icmp.id));
  60                 break;
  61         case IPPROTO_TCP:
  62                 seq_printf(s, "sport=%hu dport=%hu ",
  63                            ntohs(tuple->src.u.tcp.port),
  64                            ntohs(tuple->dst.u.tcp.port));
  65                 break;
  66         case IPPROTO_UDPLITE:
  67         case IPPROTO_UDP:
  68                 seq_printf(s, "sport=%hu dport=%hu ",
  69                            ntohs(tuple->src.u.udp.port),
  70                            ntohs(tuple->dst.u.udp.port));
  71
  72                 break;
  73         case IPPROTO_DCCP:
  74                 seq_printf(s, "sport=%hu dport=%hu ",
  75                            ntohs(tuple->src.u.dccp.port),
  76                            ntohs(tuple->dst.u.dccp.port));
  77                 break;
  78         case IPPROTO_SCTP:
  79                 seq_printf(s, "sport=%hu dport=%hu ",
  80                            ntohs(tuple->src.u.sctp.port),
  81                            ntohs(tuple->dst.u.sctp.port));
  82                 break;
  83         case IPPROTO_ICMPV6:
  84                 seq_printf(s, "type=%u code=%u id=%u ",
  85                            tuple->dst.u.icmp.type,
  86                            tuple->dst.u.icmp.code,
  87                            ntohs(tuple->src.u.icmp.id));
  88                 break;
  89         case IPPROTO_GRE:
  90                 seq_printf(s, "srckey=0x%x dstkey=0x%x ",
  91                            ntohs(tuple->src.u.gre.key),
  92                            ntohs(tuple->dst.u.gre.key));
  93                 break;
  94         default:
  95                 break;
  96         }
  97 }
  98 EXPORT_SYMBOL_GPL(print_tuple);
  99
 100 struct ct_iter_state {
 101         struct seq_net_private p;
 102         struct hlist_nulls_head *hash;
 103         unsigned int htable_size;
 104         unsigned int bucket;
 105         u_int64_t time_now;
 106 };
 107
 108 static struct hlist_nulls_node *ct_get_first(struct seq_file *seq)
 109 {
 110         struct ct_iter_state *st = seq->private;
 111         struct hlist_nulls_node *n;
 112
 113         for (st->bucket = 0;
 114              st->bucket < st->htable_size;
 115              st->bucket++) {
 116                 n = rcu_dereference(
 117                         hlist_nulls_first_rcu(&st->hash[st->bucket]));
 118                 if (!is_a_nulls(n))
 119                         return n;
 120         }
 121         return NULL;
 122 }
 123
 124 static struct hlist_nulls_node *ct_get_next(struct seq_file *seq,
 125                                       struct hlist_nulls_node *head)
 126 {
 127         struct ct_iter_state *st = seq->private;
 128
 129         head = rcu_dereference(hlist_nulls_next_rcu(head));
 130         while (is_a_nulls(head)) {
 131                 if (likely(get_nulls_value(head) == st->bucket)) {
 132                         if (++st->bucket >= st->htable_size)
 133                                 return NULL;
 134                 }
 135                 head = rcu_dereference(
 136                         hlist_nulls_first_rcu(&st->hash[st->bucket]));
 137         }
 138         return head;
 139 }
 140
 141 static struct hlist_nulls_node *ct_get_idx(struct seq_file *seq, loff_t pos)
 142 {
 143         struct hlist_nulls_node *head = ct_get_first(seq);
 144
 145         if (head)
 146                 while (pos && (head = ct_get_next(seq, head)))
 147                         pos--;
 148         return pos ? NULL : head;
 149 }
 150
 151 static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
 152         __acquires(RCU)
 153 {
 154         struct ct_iter_state *st = seq->private;
 155
 156         st->time_now = ktime_get_real_ns();
 157         rcu_read_lock();
 158
 159         nf_conntrack_get_ht(&st->hash, &st->htable_size);
 160         return ct_get_idx(seq, *pos);
 161 }
 162
 163 static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
 164 {
 165         (*pos)++;
 166         return ct_get_next(s, v);
 167 }
 168
 169 static void ct_seq_stop(struct seq_file *s, void *v)
 170         __releases(RCU)
 171 {
 172         rcu_read_unlock();
 173 }
 174
 175 #ifdef CONFIG_NF_CONNTRACK_SECMARK
 176 static void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
 177 {
 178         int ret;
 179         u32 len;
 180         char *secctx;
 181
 182         ret = security_secid_to_secctx(ct->secmark, &secctx, &len);
 183         if (ret)
 184                 return;
 185
 186         seq_printf(s, "secctx=%s ", secctx);
 187
 188         security_release_secctx(secctx, len);
 189 }
 190 #else
 191 static inline void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
 192 {
 193 }
 194 #endif
 195
 196 #ifdef CONFIG_NF_CONNTRACK_ZONES
 197 static void ct_show_zone(struct seq_file *s, const struct nf_conn *ct,
 198                          int dir)
 199 {
 200         const struct nf_conntrack_zone *zone = nf_ct_zone(ct);
 201
 202         if (zone->dir != dir)
 203                 return;
 204         switch (zone->dir) {
 205         case NF_CT_DEFAULT_ZONE_DIR:
 206                 seq_printf(s, "zone=%u ", zone->id);
 207                 break;
 208         case NF_CT_ZONE_DIR_ORIG:
 209                 seq_printf(s, "zone-orig=%u ", zone->id);
 210                 break;
 211         case NF_CT_ZONE_DIR_REPL:
 212                 seq_printf(s, "zone-reply=%u ", zone->id);
 213                 break;
 214         default:
 215                 break;
 216         }
 217 }
 218 #else
 219 static inline void ct_show_zone(struct seq_file *s, const struct nf_conn *ct,
 220                                 int dir)
 221 {
 222 }
 223 #endif
 224
 225 #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
 226 static void ct_show_delta_time(struct seq_file *s, const struct nf_conn *ct)
 227 {
 228         struct ct_iter_state *st = s->private;
 229         struct nf_conn_tstamp *tstamp;
 230         s64 delta_time;
 231
 232         tstamp = nf_conn_tstamp_find(ct);
 233         if (tstamp) {
 234                 delta_time = st->time_now - tstamp->start;
 235                 if (delta_time > 0)
 236                         delta_time = div_s64(delta_time, NSEC_PER_SEC);
 237                 else
 238                         delta_time = 0;
 239
 240                 seq_printf(s, "delta-time=%llu ",
 241                            (unsigned long long)delta_time);
 242         }
 243         return;
 244 }
 245 #else
 246 static inline void
 247 ct_show_delta_time(struct seq_file *s, const struct nf_conn *ct)
 248 {
 249 }
 250 #endif
 251
 252 static const char* l3proto_name(u16 proto)
 253 {
 254         switch (proto) {
 255         case AF_INET: return "ipv4";
 256         case AF_INET6: return "ipv6";
 257         }
 258
 259         return "unknown";
 260 }
 261
 262 static const char* l4proto_name(u16 proto)
 263 {
 264         switch (proto) {
 265         case IPPROTO_ICMP: return "icmp";
 266         case IPPROTO_TCP: return "tcp";
 267         case IPPROTO_UDP: return "udp";
 268         case IPPROTO_DCCP: return "dccp";
 269         case IPPROTO_GRE: return "gre";
 270         case IPPROTO_SCTP: return "sctp";
 271         case IPPROTO_UDPLITE: return "udplite";
 272         case IPPROTO_ICMPV6: return "icmpv6";
 273         }
 274
 275         return "unknown";
 276 }
 277
 278 static unsigned int
 279 seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir)
 280 {
 281         struct nf_conn_acct *acct;
 282         struct nf_conn_counter *counter;
 283
 284         acct = nf_conn_acct_find(ct);
 285         if (!acct)
 286                 return 0;
 287
 288         counter = acct->counter;
 289         seq_printf(s, "packets=%llu bytes=%llu ",
 290                    (unsigned long long)atomic64_read(&counter[dir].packets),
 291                    (unsigned long long)atomic64_read(&counter[dir].bytes));
 292
 293         return 0;
 294 }
 295
 296 /* return 0 on success, 1 in case of error */
 297 static int ct_seq_show(struct seq_file *s, void *v)
 298 {
 299         struct nf_conntrack_tuple_hash *hash = v;
 300         struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
 301         const struct nf_conntrack_l4proto *l4proto;
 302         struct net *net = seq_file_net(s);
 303         int ret = 0;
 304
 305         WARN_ON(!ct);
 306         if (unlikely(!refcount_inc_not_zero(&ct->ct_general.use)))
 307                 return 0;
 308
 309         /* load ->status after refcount increase */
 310         smp_acquire__after_ctrl_dep();
 311
 312         if (nf_ct_should_gc(ct)) {
 313                 nf_ct_kill(ct);
 314                 goto release;
 315         }
 316
 317         /* we only want to print DIR_ORIGINAL */
 318         if (NF_CT_DIRECTION(hash))
 319                 goto release;
 320
 321         if (!net_eq(nf_ct_net(ct), net))
 322                 goto release;
 323
 324         l4proto = nf_ct_l4proto_find(nf_ct_protonum(ct));
 325
 326         ret = -ENOSPC;
 327         seq_printf(s, "%-8s %u %-8s %u ",
 328                    l3proto_name(nf_ct_l3num(ct)), nf_ct_l3num(ct),
 329                    l4proto_name(l4proto->l4proto), nf_ct_protonum(ct));
 330
 331         if (!test_bit(IPS_OFFLOAD_BIT, &ct->status))
 332                 seq_printf(s, "%ld ", nf_ct_expires(ct)  / HZ);
 333
 334         if (l4proto->print_conntrack)
 335                 l4proto->print_conntrack(s, ct);
 336
 337         print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
 338                     l4proto);
 339
 340         ct_show_zone(s, ct, NF_CT_ZONE_DIR_ORIG);
 341
 342         if (seq_has_overflowed(s))
 343                 goto release;
 344
 345         if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
 346                 goto release;
 347
 348         if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
 349                 seq_puts(s, "[UNREPLIED] ");
 350
 351         print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, l4proto);
 352
 353         ct_show_zone(s, ct, NF_CT_ZONE_DIR_REPL);
 354
 355         if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
 356                 goto release;
 357
 358         if (test_bit(IPS_HW_OFFLOAD_BIT, &ct->status))
 359                 seq_puts(s, "[HW_OFFLOAD] ");
 360         else if (test_bit(IPS_OFFLOAD_BIT, &ct->status))
 361                 seq_puts(s, "[OFFLOAD] ");
 362         else if (test_bit(IPS_ASSURED_BIT, &ct->status))
 363                 seq_puts(s, "[ASSURED] ");
 364
 365         if (seq_has_overflowed(s))
 366                 goto release;
 367
 368 #if defined(CONFIG_NF_CONNTRACK_MARK)
 369         seq_printf(s, "mark=%u ", ct->mark);
 370 #endif
 371
 372         ct_show_secctx(s, ct);
 373         ct_show_zone(s, ct, NF_CT_DEFAULT_ZONE_DIR);
 374         ct_show_delta_time(s, ct);
 375
 376         seq_printf(s, "use=%u\n", refcount_read(&ct->ct_general.use));
 377
 378         if (seq_has_overflowed(s))
 379                 goto release;
 380
 381         ret = 0;
 382 release:
 383         nf_ct_put(ct);
 384         return ret;
 385 }
 386
 387 static const struct seq_operations ct_seq_ops = {
 388         .start = ct_seq_start,
 389         .next  = ct_seq_next,
 390         .stop  = ct_seq_stop,
 391         .show  = ct_seq_show
 392 };
 393
 394 static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
 395 {
 396         struct net *net = seq_file_net(seq);
 397         int cpu;
 398
 399         if (*pos == 0)
 400                 return SEQ_START_TOKEN;
 401
 402         for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
 403                 if (!cpu_possible(cpu))
 404                         continue;
 405                 *pos = cpu + 1;
 406                 return per_cpu_ptr(net->ct.stat, cpu);
 407         }
 408
 409         return NULL;
 410 }
 411
 412 static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 413 {
 414         struct net *net = seq_file_net(seq);
 415         int cpu;
 416
 417         for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
 418                 if (!cpu_possible(cpu))
 419                         continue;
 420                 *pos = cpu + 1;
 421                 return per_cpu_ptr(net->ct.stat, cpu);
 422         }
 423         (*pos)++;
 424         return NULL;
 425 }
 426
 427 static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
 428 {
 429 }
 430
 431 static int ct_cpu_seq_show(struct seq_file *seq, void *v)
 432 {
 433         struct net *net = seq_file_net(seq);
 434         const struct ip_conntrack_stat *st = v;
 435         unsigned int nr_conntracks;
 436
 437         if (v == SEQ_START_TOKEN) {
 438                 seq_puts(seq, "entries  clashres found new invalid ignore delete chainlength insert insert_failed drop early_drop icmp_error  expect_new expect_create expect_delete search_restart\n");
 439                 return 0;
 440         }
 441
 442         nr_conntracks = nf_conntrack_count(net);
 443
 444         seq_printf(seq, "%08x  %08x %08x %08x %08x %08x %08x %08x "
 445                         "%08x %08x %08x %08x %08x  %08x %08x %08x %08x\n",
 446                    nr_conntracks,
 447                    st->clash_resolve,
 448                    st->found,
 449                    0,
 450                    st->invalid,
 451                    0,
 452                    0,
 453                    st->chaintoolong,
 454                    st->insert,
 455                    st->insert_failed,
 456                    st->drop,
 457                    st->early_drop,
 458                    st->error,
 459
 460                    st->expect_new,
 461                    st->expect_create,
 462                    st->expect_delete,
 463                    st->search_restart
 464                 );
 465         return 0;
 466 }
 467
 468 static const struct seq_operations ct_cpu_seq_ops = {
 469         .start  = ct_cpu_seq_start,
 470         .next   = ct_cpu_seq_next,
 471         .stop   = ct_cpu_seq_stop,
 472         .show   = ct_cpu_seq_show,
 473 };
 474
 475 static int nf_conntrack_standalone_init_proc(struct net *net)
 476 {
 477         struct proc_dir_entry *pde;
 478         kuid_t root_uid;
 479         kgid_t root_gid;
 480
 481         pde = proc_create_net("nf_conntrack", 0440, net->proc_net, &ct_seq_ops,
 482                         sizeof(struct ct_iter_state));
 483         if (!pde)
 484                 goto out_nf_conntrack;
 485
 486         root_uid = make_kuid(net->user_ns, 0);
 487         root_gid = make_kgid(net->user_ns, 0);
 488         if (uid_valid(root_uid) && gid_valid(root_gid))
 489                 proc_set_user(pde, root_uid, root_gid);
 490
 491         pde = proc_create_net("nf_conntrack", 0444, net->proc_net_stat,
 492                         &ct_cpu_seq_ops, sizeof(struct seq_net_private));
 493         if (!pde)
 494                 goto out_stat_nf_conntrack;
 495         return 0;
 496
 497 out_stat_nf_conntrack:
 498         remove_proc_entry("nf_conntrack", net->proc_net);
 499 out_nf_conntrack:
 500         return -ENOMEM;
 501 }
 502
 503 static void nf_conntrack_standalone_fini_proc(struct net *net)
 504 {
 505         remove_proc_entry("nf_conntrack", net->proc_net_stat);
 506         remove_proc_entry("nf_conntrack", net->proc_net);
 507 }
 508 #else
 509 static int nf_conntrack_standalone_init_proc(struct net *net)
 510 {
 511         return 0;
 512 }
 513
 514 static void nf_conntrack_standalone_fini_proc(struct net *net)
 515 {
 516 }
 517 #endif /* CONFIG_NF_CONNTRACK_PROCFS */
 518
 519 u32 nf_conntrack_count(const struct net *net)
 520 {
 521         const struct nf_conntrack_net *cnet = nf_ct_pernet(net);
 522
 523         return atomic_read(&cnet->count);
 524 }
 525 EXPORT_SYMBOL_GPL(nf_conntrack_count);
 526
 527 /* Sysctl support */
 528
 529 #ifdef CONFIG_SYSCTL
 530 /* size the user *wants to set */
 531 static unsigned int nf_conntrack_htable_size_user __read_mostly;
 532
 533 static int
 534 nf_conntrack_hash_sysctl(struct ctl_table *table, int write,
 535                          void *buffer, size_t *lenp, loff_t *ppos)
 536 {
 537         int ret;
 538
 539         /* module_param hashsize could have changed value */
 540         nf_conntrack_htable_size_user = nf_conntrack_htable_size;
 541
 542         ret = proc_dointvec(table, write, buffer, lenp, ppos);
 543         if (ret < 0 || !write)
 544                 return ret;
 545
 546         /* update ret, we might not be able to satisfy request */
 547         ret = nf_conntrack_hash_resize(nf_conntrack_htable_size_user);
 548
 549         /* update it to the actual value used by conntrack */
 550         nf_conntrack_htable_size_user = nf_conntrack_htable_size;
 551         return ret;
 552 }
 553
 554 static struct ctl_table_header *nf_ct_netfilter_header;
 555
 556 enum nf_ct_sysctl_index {
 557         NF_SYSCTL_CT_MAX,
 558         NF_SYSCTL_CT_COUNT,
 559         NF_SYSCTL_CT_BUCKETS,
 560         NF_SYSCTL_CT_CHECKSUM,
 561         NF_SYSCTL_CT_LOG_INVALID,
 562         NF_SYSCTL_CT_EXPECT_MAX,
 563         NF_SYSCTL_CT_ACCT,
 564         NF_SYSCTL_CT_HELPER,
 565 #ifdef CONFIG_NF_CONNTRACK_EVENTS
 566         NF_SYSCTL_CT_EVENTS,
 567 #endif
 568 #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
 569         NF_SYSCTL_CT_TIMESTAMP,
 570 #endif
 571         NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC,
 572         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT,
 573         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV,
 574         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED,
 575         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT,
 576         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT,
 577         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK,
 578         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT,
 579         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE,
 580         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS,
 581         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK,
 582 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 583         NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD,
 584 #endif
 585         NF_SYSCTL_CT_PROTO_TCP_LOOSE,
 586         NF_SYSCTL_CT_PROTO_TCP_LIBERAL,
 587         NF_SYSCTL_CT_PROTO_TCP_IGNORE_INVALID_RST,
 588         NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS,
 589         NF_SYSCTL_CT_PROTO_TIMEOUT_UDP,
 590         NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM,
 591 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 592         NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD,
 593 #endif
 594         NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP,
 595         NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6,
 596 #ifdef CONFIG_NF_CT_PROTO_SCTP
 597         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED,
 598         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT,
 599         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED,
 600         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED,
 601         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT,
 602         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD,
 603         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
 604         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT,
 605         NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED,
 606 #endif
 607 #ifdef CONFIG_NF_CT_PROTO_DCCP
 608         NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST,
 609         NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND,
 610         NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN,
 611         NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN,
 612         NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ,
 613         NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING,
 614         NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT,
 615         NF_SYSCTL_CT_PROTO_DCCP_LOOSE,
 616 #endif
 617 #ifdef CONFIG_NF_CT_PROTO_GRE
 618         NF_SYSCTL_CT_PROTO_TIMEOUT_GRE,
 619         NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM,
 620 #endif
 621 #ifdef CONFIG_LWTUNNEL
 622         NF_SYSCTL_CT_LWTUNNEL,
 623 #endif
 624
 625         __NF_SYSCTL_CT_LAST_SYSCTL,
 626 };
 627
 628 #define NF_SYSCTL_CT_LAST_SYSCTL (__NF_SYSCTL_CT_LAST_SYSCTL + 1)
 629
 630 static struct ctl_table nf_ct_sysctl_table[] = {
 631         [NF_SYSCTL_CT_MAX] = {
 632                 .procname       = "nf_conntrack_max",
 633                 .data           = &nf_conntrack_max,
 634                 .maxlen         = sizeof(int),
 635                 .mode           = 0644,
 636                 .proc_handler   = proc_dointvec,
 637         },
 638         [NF_SYSCTL_CT_COUNT] = {
 639                 .procname       = "nf_conntrack_count",
 640                 .maxlen         = sizeof(int),
 641                 .mode           = 0444,
 642                 .proc_handler   = proc_dointvec,
 643         },
 644         [NF_SYSCTL_CT_BUCKETS] = {
 645                 .procname       = "nf_conntrack_buckets",
 646                 .data           = &nf_conntrack_htable_size_user,
 647                 .maxlen         = sizeof(unsigned int),
 648                 .mode           = 0644,
 649                 .proc_handler   = nf_conntrack_hash_sysctl,
 650         },
 651         [NF_SYSCTL_CT_CHECKSUM] = {
 652                 .procname       = "nf_conntrack_checksum",
 653                 .data           = &init_net.ct.sysctl_checksum,
 654                 .maxlen         = sizeof(u8),
 655                 .mode           = 0644,
 656                 .proc_handler   = proc_dou8vec_minmax,
 657                 .extra1         = SYSCTL_ZERO,
 658                 .extra2         = SYSCTL_ONE,
 659         },
 660         [NF_SYSCTL_CT_LOG_INVALID] = {
 661                 .procname       = "nf_conntrack_log_invalid",
 662                 .data           = &init_net.ct.sysctl_log_invalid,
 663                 .maxlen         = sizeof(u8),
 664                 .mode           = 0644,
 665                 .proc_handler   = proc_dou8vec_minmax,
 666         },
 667         [NF_SYSCTL_CT_EXPECT_MAX] = {
 668                 .procname       = "nf_conntrack_expect_max",
 669                 .data           = &nf_ct_expect_max,
 670                 .maxlen         = sizeof(int),
 671                 .mode           = 0644,
 672                 .proc_handler   = proc_dointvec,
 673         },
 674         [NF_SYSCTL_CT_ACCT] = {
 675                 .procname       = "nf_conntrack_acct",
 676                 .data           = &init_net.ct.sysctl_acct,
 677                 .maxlen         = sizeof(u8),
 678                 .mode           = 0644,
 679                 .proc_handler   = proc_dou8vec_minmax,
 680                 .extra1         = SYSCTL_ZERO,
 681                 .extra2         = SYSCTL_ONE,
 682         },
 683         [NF_SYSCTL_CT_HELPER] = {
 684                 .procname       = "nf_conntrack_helper",
 685                 .maxlen         = sizeof(u8),
 686                 .mode           = 0644,
 687                 .proc_handler   = proc_dou8vec_minmax,
 688                 .extra1         = SYSCTL_ZERO,
 689                 .extra2         = SYSCTL_ONE,
 690         },
 691 #ifdef CONFIG_NF_CONNTRACK_EVENTS
 692         [NF_SYSCTL_CT_EVENTS] = {
 693                 .procname       = "nf_conntrack_events",
 694                 .data           = &init_net.ct.sysctl_events,
 695                 .maxlen         = sizeof(u8),
 696                 .mode           = 0644,
 697                 .proc_handler   = proc_dou8vec_minmax,
 698                 .extra1         = SYSCTL_ZERO,
 699                 .extra2         = SYSCTL_TWO,
 700         },
 701 #endif
 702 #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
 703         [NF_SYSCTL_CT_TIMESTAMP] = {
 704                 .procname       = "nf_conntrack_timestamp",
 705                 .data           = &init_net.ct.sysctl_tstamp,
 706                 .maxlen         = sizeof(u8),
 707                 .mode           = 0644,
 708                 .proc_handler   = proc_dou8vec_minmax,
 709                 .extra1         = SYSCTL_ZERO,
 710                 .extra2         = SYSCTL_ONE,
 711         },
 712 #endif
 713         [NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC] = {
 714                 .procname       = "nf_conntrack_generic_timeout",
 715                 .maxlen         = sizeof(unsigned int),
 716                 .mode           = 0644,
 717                 .proc_handler   = proc_dointvec_jiffies,
 718         },
 719         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT] = {
 720                 .procname       = "nf_conntrack_tcp_timeout_syn_sent",
 721                 .maxlen         = sizeof(unsigned int),
 722                 .mode           = 0644,
 723                 .proc_handler   = proc_dointvec_jiffies,
 724         },
 725         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV] = {
 726                 .procname       = "nf_conntrack_tcp_timeout_syn_recv",
 727                 .maxlen         = sizeof(unsigned int),
 728                 .mode           = 0644,
 729                 .proc_handler   = proc_dointvec_jiffies,
 730         },
 731         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED] = {
 732                 .procname       = "nf_conntrack_tcp_timeout_established",
 733                 .maxlen         = sizeof(unsigned int),
 734                 .mode           = 0644,
 735                 .proc_handler   = proc_dointvec_jiffies,
 736         },
 737         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT] = {
 738                 .procname       = "nf_conntrack_tcp_timeout_fin_wait",
 739                 .maxlen         = sizeof(unsigned int),
 740                 .mode           = 0644,
 741                 .proc_handler   = proc_dointvec_jiffies,
 742         },
 743         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT] = {
 744                 .procname       = "nf_conntrack_tcp_timeout_close_wait",
 745                 .maxlen         = sizeof(unsigned int),
 746                 .mode           = 0644,
 747                 .proc_handler   = proc_dointvec_jiffies,
 748         },
 749         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK] = {
 750                 .procname       = "nf_conntrack_tcp_timeout_last_ack",
 751                 .maxlen         = sizeof(unsigned int),
 752                 .mode           = 0644,
 753                 .proc_handler   = proc_dointvec_jiffies,
 754         },
 755         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT] = {
 756                 .procname       = "nf_conntrack_tcp_timeout_time_wait",
 757                 .maxlen         = sizeof(unsigned int),
 758                 .mode           = 0644,
 759                 .proc_handler   = proc_dointvec_jiffies,
 760         },
 761         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE] = {
 762                 .procname       = "nf_conntrack_tcp_timeout_close",
 763                 .maxlen         = sizeof(unsigned int),
 764                 .mode           = 0644,
 765                 .proc_handler   = proc_dointvec_jiffies,
 766         },
 767         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS] = {
 768                 .procname       = "nf_conntrack_tcp_timeout_max_retrans",
 769                 .maxlen         = sizeof(unsigned int),
 770                 .mode           = 0644,
 771                 .proc_handler   = proc_dointvec_jiffies,
 772         },
 773         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK] = {
 774                 .procname       = "nf_conntrack_tcp_timeout_unacknowledged",
 775                 .maxlen         = sizeof(unsigned int),
 776                 .mode           = 0644,
 777                 .proc_handler   = proc_dointvec_jiffies,
 778         },
 779 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 780         [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD] = {
 781                 .procname       = "nf_flowtable_tcp_timeout",
 782                 .maxlen         = sizeof(unsigned int),
 783                 .mode           = 0644,
 784                 .proc_handler   = proc_dointvec_jiffies,
 785         },
 786 #endif
 787         [NF_SYSCTL_CT_PROTO_TCP_LOOSE] = {
 788                 .procname       = "nf_conntrack_tcp_loose",
 789                 .maxlen         = sizeof(u8),
 790                 .mode           = 0644,
 791                 .proc_handler   = proc_dou8vec_minmax,
 792                 .extra1         = SYSCTL_ZERO,
 793                 .extra2         = SYSCTL_ONE,
 794         },
 795         [NF_SYSCTL_CT_PROTO_TCP_LIBERAL] = {
 796                 .procname       = "nf_conntrack_tcp_be_liberal",
 797                 .maxlen         = sizeof(u8),
 798                 .mode           = 0644,
 799                 .proc_handler   = proc_dou8vec_minmax,
 800                 .extra1         = SYSCTL_ZERO,
 801                 .extra2         = SYSCTL_ONE,
 802         },
 803         [NF_SYSCTL_CT_PROTO_TCP_IGNORE_INVALID_RST] = {
 804                 .procname       = "nf_conntrack_tcp_ignore_invalid_rst",
 805                 .maxlen         = sizeof(u8),
 806                 .mode           = 0644,
 807                 .proc_handler   = proc_dou8vec_minmax,
 808                 .extra1         = SYSCTL_ZERO,
 809                 .extra2         = SYSCTL_ONE,
 810         },
 811         [NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS] = {
 812                 .procname       = "nf_conntrack_tcp_max_retrans",
 813                 .maxlen         = sizeof(u8),
 814                 .mode           = 0644,
 815                 .proc_handler   = proc_dou8vec_minmax,
 816         },
 817         [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP] = {
 818                 .procname       = "nf_conntrack_udp_timeout",
 819                 .maxlen         = sizeof(unsigned int),
 820                 .mode           = 0644,
 821                 .proc_handler   = proc_dointvec_jiffies,
 822         },
 823         [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM] = {
 824                 .procname       = "nf_conntrack_udp_timeout_stream",
 825                 .maxlen         = sizeof(unsigned int),
 826                 .mode           = 0644,
 827                 .proc_handler   = proc_dointvec_jiffies,
 828         },
 829 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 830         [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD] = {
 831                 .procname       = "nf_flowtable_udp_timeout",
 832                 .maxlen         = sizeof(unsigned int),
 833                 .mode           = 0644,
 834                 .proc_handler   = proc_dointvec_jiffies,
 835         },
 836 #endif
 837         [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP] = {
 838                 .procname       = "nf_conntrack_icmp_timeout",
 839                 .maxlen         = sizeof(unsigned int),
 840                 .mode           = 0644,
 841                 .proc_handler   = proc_dointvec_jiffies,
 842         },
 843         [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6] = {
 844                 .procname       = "nf_conntrack_icmpv6_timeout",
 845                 .maxlen         = sizeof(unsigned int),
 846                 .mode           = 0644,
 847                 .proc_handler   = proc_dointvec_jiffies,
 848         },
 849 #ifdef CONFIG_NF_CT_PROTO_SCTP
 850         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED] = {
 851                 .procname       = "nf_conntrack_sctp_timeout_closed",
 852                 .maxlen         = sizeof(unsigned int),
 853                 .mode           = 0644,
 854                 .proc_handler   = proc_dointvec_jiffies,
 855         },
 856         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT] = {
 857                 .procname       = "nf_conntrack_sctp_timeout_cookie_wait",
 858                 .maxlen         = sizeof(unsigned int),
 859                 .mode           = 0644,
 860                 .proc_handler   = proc_dointvec_jiffies,
 861         },
 862         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED] = {
 863                 .procname       = "nf_conntrack_sctp_timeout_cookie_echoed",
 864                 .maxlen         = sizeof(unsigned int),
 865                 .mode           = 0644,
 866                 .proc_handler   = proc_dointvec_jiffies,
 867         },
 868         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED] = {
 869                 .procname       = "nf_conntrack_sctp_timeout_established",
 870                 .maxlen         = sizeof(unsigned int),
 871                 .mode           = 0644,
 872                 .proc_handler   = proc_dointvec_jiffies,
 873         },
 874         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT] = {
 875                 .procname       = "nf_conntrack_sctp_timeout_shutdown_sent",
 876                 .maxlen         = sizeof(unsigned int),
 877                 .mode           = 0644,
 878                 .proc_handler   = proc_dointvec_jiffies,
 879         },
 880         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD] = {
 881                 .procname       = "nf_conntrack_sctp_timeout_shutdown_recd",
 882                 .maxlen         = sizeof(unsigned int),
 883                 .mode           = 0644,
 884                 .proc_handler   = proc_dointvec_jiffies,
 885         },
 886         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT] = {
 887                 .procname       = "nf_conntrack_sctp_timeout_shutdown_ack_sent",
 888                 .maxlen         = sizeof(unsigned int),
 889                 .mode           = 0644,
 890                 .proc_handler   = proc_dointvec_jiffies,
 891         },
 892         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT] = {
 893                 .procname       = "nf_conntrack_sctp_timeout_heartbeat_sent",
 894                 .maxlen         = sizeof(unsigned int),
 895                 .mode           = 0644,
 896                 .proc_handler   = proc_dointvec_jiffies,
 897         },
 898         [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED] = {
 899                 .procname       = "nf_conntrack_sctp_timeout_heartbeat_acked",
 900                 .maxlen         = sizeof(unsigned int),
 901                 .mode           = 0644,
 902                 .proc_handler   = proc_dointvec_jiffies,
 903         },
 904 #endif
 905 #ifdef CONFIG_NF_CT_PROTO_DCCP
 906         [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST] = {
 907                 .procname       = "nf_conntrack_dccp_timeout_request",
 908                 .maxlen         = sizeof(unsigned int),
 909                 .mode           = 0644,
 910                 .proc_handler   = proc_dointvec_jiffies,
 911         },
 912         [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND] = {
 913                 .procname       = "nf_conntrack_dccp_timeout_respond",
 914                 .maxlen         = sizeof(unsigned int),
 915                 .mode           = 0644,
 916                 .proc_handler   = proc_dointvec_jiffies,
 917         },
 918         [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN] = {
 919                 .procname       = "nf_conntrack_dccp_timeout_partopen",
 920                 .maxlen         = sizeof(unsigned int),
 921                 .mode           = 0644,
 922                 .proc_handler   = proc_dointvec_jiffies,
 923         },
 924         [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN] = {
 925                 .procname       = "nf_conntrack_dccp_timeout_open",
 926                 .maxlen         = sizeof(unsigned int),
 927                 .mode           = 0644,
 928                 .proc_handler   = proc_dointvec_jiffies,
 929         },
 930         [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ] = {
 931                 .procname       = "nf_conntrack_dccp_timeout_closereq",
 932                 .maxlen         = sizeof(unsigned int),
 933                 .mode           = 0644,
 934                 .proc_handler   = proc_dointvec_jiffies,
 935         },
 936         [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING] = {
 937                 .procname       = "nf_conntrack_dccp_timeout_closing",
 938                 .maxlen         = sizeof(unsigned int),
 939                 .mode           = 0644,
 940                 .proc_handler   = proc_dointvec_jiffies,
 941         },
 942         [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT] = {
 943                 .procname       = "nf_conntrack_dccp_timeout_timewait",
 944                 .maxlen         = sizeof(unsigned int),
 945                 .mode           = 0644,
 946                 .proc_handler   = proc_dointvec_jiffies,
 947         },
 948         [NF_SYSCTL_CT_PROTO_DCCP_LOOSE] = {
 949                 .procname       = "nf_conntrack_dccp_loose",
 950                 .maxlen         = sizeof(u8),
 951                 .mode           = 0644,
 952                 .proc_handler   = proc_dou8vec_minmax,
 953                 .extra1         = SYSCTL_ZERO,
 954                 .extra2         = SYSCTL_ONE,
 955         },
 956 #endif
 957 #ifdef CONFIG_NF_CT_PROTO_GRE
 958         [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE] = {
 959                 .procname       = "nf_conntrack_gre_timeout",
 960                 .maxlen         = sizeof(unsigned int),
 961                 .mode           = 0644,
 962                 .proc_handler   = proc_dointvec_jiffies,
 963         },
 964         [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM] = {
 965                 .procname       = "nf_conntrack_gre_timeout_stream",
 966                 .maxlen         = sizeof(unsigned int),
 967                 .mode           = 0644,
 968                 .proc_handler   = proc_dointvec_jiffies,
 969         },
 970 #endif
 971 #ifdef CONFIG_LWTUNNEL
 972         [NF_SYSCTL_CT_LWTUNNEL] = {
 973                 .procname       = "nf_hooks_lwtunnel",
 974                 .data           = NULL,
 975                 .maxlen         = sizeof(int),
 976                 .mode           = 0644,
 977                 .proc_handler   = nf_hooks_lwtunnel_sysctl_handler,
 978         },
 979 #endif
 980         {}
 981 };
 982
 983 static struct ctl_table nf_ct_netfilter_table[] = {
 984         {
 985                 .procname       = "nf_conntrack_max",
 986                 .data           = &nf_conntrack_max,
 987                 .maxlen         = sizeof(int),
 988                 .mode           = 0644,
 989                 .proc_handler   = proc_dointvec,
 990         },
 991         { }
 992 };
 993
 994 static void nf_conntrack_standalone_init_tcp_sysctl(struct net *net,
 995                                                     struct ctl_table *table)
 996 {
 997         struct nf_tcp_net *tn = nf_tcp_pernet(net);
 998
 999 #define XASSIGN(XNAME, tn) \
1000         table[NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ ## XNAME].data = \
1001                         &(tn)->timeouts[TCP_CONNTRACK_ ## XNAME]
1002
1003         XASSIGN(SYN_SENT, tn);
1004         XASSIGN(SYN_RECV, tn);
1005         XASSIGN(ESTABLISHED, tn);
1006         XASSIGN(FIN_WAIT, tn);
1007         XASSIGN(CLOSE_WAIT, tn);
1008         XASSIGN(LAST_ACK, tn);
1009         XASSIGN(TIME_WAIT, tn);
1010         XASSIGN(CLOSE, tn);
1011         XASSIGN(RETRANS, tn);
1012         XASSIGN(UNACK, tn);
1013 #undef XASSIGN
1014 #define XASSIGN(XNAME, rval) \
1015         table[NF_SYSCTL_CT_PROTO_TCP_ ## XNAME].data = (rval)
1016
1017         XASSIGN(LOOSE, &tn->tcp_loose);
1018         XASSIGN(LIBERAL, &tn->tcp_be_liberal);
1019         XASSIGN(MAX_RETRANS, &tn->tcp_max_retrans);
1020         XASSIGN(IGNORE_INVALID_RST, &tn->tcp_ignore_invalid_rst);
1021 #undef XASSIGN
1022
1023 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
1024         table[NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD].data = &tn->offload_timeout;
1025 #endif
1026
1027 }
1028
1029 static void nf_conntrack_standalone_init_sctp_sysctl(struct net *net,
1030                                                      struct ctl_table *table)
1031 {
1032 #ifdef CONFIG_NF_CT_PROTO_SCTP
1033         struct nf_sctp_net *sn = nf_sctp_pernet(net);
1034
1035 #define XASSIGN(XNAME, sn) \
1036         table[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ ## XNAME].data = \
1037                         &(sn)->timeouts[SCTP_CONNTRACK_ ## XNAME]
1038
1039         XASSIGN(CLOSED, sn);
1040         XASSIGN(COOKIE_WAIT, sn);
1041         XASSIGN(COOKIE_ECHOED, sn);
1042         XASSIGN(ESTABLISHED, sn);
1043         XASSIGN(SHUTDOWN_SENT, sn);
1044         XASSIGN(SHUTDOWN_RECD, sn);
1045         XASSIGN(SHUTDOWN_ACK_SENT, sn);
1046         XASSIGN(HEARTBEAT_SENT, sn);
1047         XASSIGN(HEARTBEAT_ACKED, sn);
1048 #undef XASSIGN
1049 #endif
1050 }
1051
1052 static void nf_conntrack_standalone_init_dccp_sysctl(struct net *net,
1053                                                      struct ctl_table *table)
1054 {
1055 #ifdef CONFIG_NF_CT_PROTO_DCCP
1056         struct nf_dccp_net *dn = nf_dccp_pernet(net);
1057
1058 #define XASSIGN(XNAME, dn) \
1059         table[NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_ ## XNAME].data = \
1060                         &(dn)->dccp_timeout[CT_DCCP_ ## XNAME]
1061
1062         XASSIGN(REQUEST, dn);
1063         XASSIGN(RESPOND, dn);
1064         XASSIGN(PARTOPEN, dn);
1065         XASSIGN(OPEN, dn);
1066         XASSIGN(CLOSEREQ, dn);
1067         XASSIGN(CLOSING, dn);
1068         XASSIGN(TIMEWAIT, dn);
1069 #undef XASSIGN
1070
1071         table[NF_SYSCTL_CT_PROTO_DCCP_LOOSE].data = &dn->dccp_loose;
1072 #endif
1073 }
1074
1075 static void nf_conntrack_standalone_init_gre_sysctl(struct net *net,
1076                                                     struct ctl_table *table)
1077 {
1078 #ifdef CONFIG_NF_CT_PROTO_GRE
1079         struct nf_gre_net *gn = nf_gre_pernet(net);
1080
1081         table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE].data = &gn->timeouts[GRE_CT_UNREPLIED];
1082         table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM].data = &gn->timeouts[GRE_CT_REPLIED];
1083 #endif
1084 }
1085
1086 static int nf_conntrack_standalone_init_sysctl(struct net *net)
1087 {
1088         struct nf_conntrack_net *cnet = nf_ct_pernet(net);
1089         struct nf_udp_net *un = nf_udp_pernet(net);
1090         struct ctl_table *table;
1091
1092         BUILD_BUG_ON(ARRAY_SIZE(nf_ct_sysctl_table) != NF_SYSCTL_CT_LAST_SYSCTL);
1093
1094         table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table),
1095                         GFP_KERNEL);
1096         if (!table)
1097                 return -ENOMEM;
1098
1099         table[NF_SYSCTL_CT_COUNT].data = &cnet->count;
1100         table[NF_SYSCTL_CT_CHECKSUM].data = &net->ct.sysctl_checksum;
1101         table[NF_SYSCTL_CT_LOG_INVALID].data = &net->ct.sysctl_log_invalid;
1102         table[NF_SYSCTL_CT_ACCT].data = &net->ct.sysctl_acct;
1103         table[NF_SYSCTL_CT_HELPER].data = &cnet->sysctl_auto_assign_helper;
1104 #ifdef CONFIG_NF_CONNTRACK_EVENTS
1105         table[NF_SYSCTL_CT_EVENTS].data = &net->ct.sysctl_events;
1106 #endif
1107 #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
1108         table[NF_SYSCTL_CT_TIMESTAMP].data = &net->ct.sysctl_tstamp;
1109 #endif
1110         table[NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC].data = &nf_generic_pernet(net)->timeout;
1111         table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP].data = &nf_icmp_pernet(net)->timeout;
1112         table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6].data = &nf_icmpv6_pernet(net)->timeout;
1113         table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP].data = &un->timeouts[UDP_CT_UNREPLIED];
1114         table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM].data = &un->timeouts[UDP_CT_REPLIED];
1115 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
1116         table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD].data = &un->offload_timeout;
1117 #endif
1118
1119         nf_conntrack_standalone_init_tcp_sysctl(net, table);
1120         nf_conntrack_standalone_init_sctp_sysctl(net, table);
1121         nf_conntrack_standalone_init_dccp_sysctl(net, table);
1122         nf_conntrack_standalone_init_gre_sysctl(net, table);
1123
1124         /* Don't allow non-init_net ns to alter global sysctls */
1125         if (!net_eq(&init_net, net)) {
1126                 table[NF_SYSCTL_CT_MAX].mode = 0444;
1127                 table[NF_SYSCTL_CT_EXPECT_MAX].mode = 0444;
1128                 table[NF_SYSCTL_CT_BUCKETS].mode = 0444;
1129         }
1130
1131         cnet->sysctl_header = register_net_sysctl(net, "net/netfilter", table);
1132         if (!cnet->sysctl_header)
1133                 goto out_unregister_netfilter;
1134
1135         return 0;
1136
1137 out_unregister_netfilter:
1138         kfree(table);
1139         return -ENOMEM;
1140 }
1141
1142 static void nf_conntrack_standalone_fini_sysctl(struct net *net)
1143 {
1144         struct nf_conntrack_net *cnet = nf_ct_pernet(net);
1145         struct ctl_table *table;
1146
1147         table = cnet->sysctl_header->ctl_table_arg;
1148         unregister_net_sysctl_table(cnet->sysctl_header);
1149         kfree(table);
1150 }
1151 #else
1152 static int nf_conntrack_standalone_init_sysctl(struct net *net)
1153 {
1154         return 0;
1155 }
1156
1157 static void nf_conntrack_standalone_fini_sysctl(struct net *net)
1158 {
1159 }
1160 #endif /* CONFIG_SYSCTL */
1161
1162 static void nf_conntrack_fini_net(struct net *net)
1163 {
1164         if (enable_hooks)
1165                 nf_ct_netns_put(net, NFPROTO_INET);
1166
1167         nf_conntrack_standalone_fini_proc(net);
1168         nf_conntrack_standalone_fini_sysctl(net);
1169 }
1170
1171 static int nf_conntrack_pernet_init(struct net *net)
1172 {
1173         int ret;
1174
1175         net->ct.sysctl_checksum = 1;
1176
1177         ret = nf_conntrack_standalone_init_sysctl(net);
1178         if (ret < 0)
1179                 return ret;
1180
1181         ret = nf_conntrack_standalone_init_proc(net);
1182         if (ret < 0)
1183                 goto out_proc;
1184
1185         ret = nf_conntrack_init_net(net);
1186         if (ret < 0)
1187                 goto out_init_net;
1188
1189         if (enable_hooks) {
1190                 ret = nf_ct_netns_get(net, NFPROTO_INET);
1191                 if (ret < 0)
1192                         goto out_hooks;
1193         }
1194
1195         return 0;
1196
1197 out_hooks:
1198         nf_conntrack_cleanup_net(net);
1199 out_init_net:
1200         nf_conntrack_standalone_fini_proc(net);
1201 out_proc:
1202         nf_conntrack_standalone_fini_sysctl(net);
1203         return ret;
1204 }
1205
1206 static void nf_conntrack_pernet_exit(struct list_head *net_exit_list)
1207 {
1208         struct net *net;
1209
1210         list_for_each_entry(net, net_exit_list, exit_list)
1211                 nf_conntrack_fini_net(net);
1212
1213         nf_conntrack_cleanup_net_list(net_exit_list);
1214 }
1215
1216 static struct pernet_operations nf_conntrack_net_ops = {
1217         .init           = nf_conntrack_pernet_init,
1218         .exit_batch     = nf_conntrack_pernet_exit,
1219         .id             = &nf_conntrack_net_id,
1220         .size = sizeof(struct nf_conntrack_net),
1221 };
1222
1223 static int __init nf_conntrack_standalone_init(void)
1224 {
1225         int ret = nf_conntrack_init_start();
1226         if (ret < 0)
1227                 goto out_start;
1228
1229         BUILD_BUG_ON(NFCT_INFOMASK <= IP_CT_NUMBER);
1230
1231 #ifdef CONFIG_SYSCTL
1232         nf_ct_netfilter_header =
1233                 register_net_sysctl(&init_net, "net", nf_ct_netfilter_table);
1234         if (!nf_ct_netfilter_header) {
1235                 pr_err("nf_conntrack: can't register to sysctl.\n");
1236                 ret = -ENOMEM;
1237                 goto out_sysctl;
1238         }
1239
1240         nf_conntrack_htable_size_user = nf_conntrack_htable_size;
1241 #endif
1242
1243         ret = register_pernet_subsys(&nf_conntrack_net_ops);
1244         if (ret < 0)
1245                 goto out_pernet;
1246
1247         nf_conntrack_init_end();
1248         return 0;
1249
1250 out_pernet:
1251 #ifdef CONFIG_SYSCTL
1252         unregister_net_sysctl_table(nf_ct_netfilter_header);
1253 out_sysctl:
1254 #endif
1255         nf_conntrack_cleanup_end();
1256 out_start:
1257         return ret;
1258 }
1259
1260 static void __exit nf_conntrack_standalone_fini(void)
1261 {
1262         nf_conntrack_cleanup_start();
1263         unregister_pernet_subsys(&nf_conntrack_net_ops);
1264 #ifdef CONFIG_SYSCTL
1265         unregister_net_sysctl_table(nf_ct_netfilter_header);
1266 #endif
1267         nf_conntrack_cleanup_end();
1268 }
1269
1270 module_init(nf_conntrack_standalone_init);
1271 module_exit(nf_conntrack_standalone_fini);