1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 /* Copyright (c) 1990 Mentat Inc. */ 27 28 #ifndef _INET_IP_H 29 #define _INET_IP_H 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #include <sys/isa_defs.h> 38 #include <sys/types.h> 39 #include <inet/mib2.h> 40 #include <inet/nd.h> 41 #include <sys/atomic.h> 42 #include <sys/socket.h> 43 #include <net/if_dl.h> 44 #include <net/if.h> 45 #include <netinet/ip.h> 46 #include <sys/dlpi.h> 47 #include <netinet/igmp.h> 48 49 #ifdef _KERNEL 50 #include <netinet/ip6.h> 51 #include <sys/avl.h> 52 #include <sys/vmem.h> 53 #include <sys/squeue.h> 54 #include <sys/systm.h> 55 56 #ifdef DEBUG 57 #define ILL_DEBUG 58 #define IRE_DEBUG 59 #define NCE_DEBUG 60 #define CONN_DEBUG 61 #endif 62 63 #define IP_DEBUG 64 /* 65 * The mt-streams(9F) flags for the IP module; put here so that other 66 * "drivers" that are actually IP (e.g., ICMP, UDP) can use the same set 67 * of flags. 68 */ 69 #define IP_DEVMTFLAGS D_MP 70 #endif 71 72 /* Minor numbers */ 73 #define IPV4_MINOR 0 74 #define IPV6_MINOR 1 75 #define TCP_MINOR 2 76 #define TCP_MINOR6 3 77 78 #ifndef _IPADDR_T 79 #define _IPADDR_T 80 typedef uint32_t ipaddr_t; 81 #endif 82 83 /* Number of bits in an address */ 84 #define IP_ABITS 32 85 #define IPV6_ABITS 128 86 87 #define IP_HOST_MASK (ipaddr_t)0xffffffffU 88 89 #define IP_CSUM(mp, off, sum) (~ip_cksum(mp, off, sum) & 0xFFFF) 90 #define IP_CSUM_PARTIAL(mp, off, sum) ip_cksum(mp, off, sum) 91 #define IP_BCSUM_PARTIAL(bp, len, sum) bcksum(bp, len, sum) 92 #define IP_MD_CSUM(pd, off, sum) (~ip_md_cksum(pd, off, sum) & 0xffff) 93 #define IP_MD_CSUM_PARTIAL(pd, off, sum) ip_md_cksum(pd, off, sum) 94 95 /* 96 * Flag to IP write side to indicate that the appln has sent in a pre-built 97 * IP header. Stored in ipha_ident (which is otherwise zero). 98 */ 99 #define IP_HDR_INCLUDED 0xFFFF 100 101 #define ILL_FRAG_HASH_TBL_COUNT ((unsigned int)64) 102 #define ILL_FRAG_HASH_TBL_SIZE (ILL_FRAG_HASH_TBL_COUNT * sizeof (ipfb_t)) 103 104 #define IP_DEV_NAME "/dev/ip" 105 #define IP_MOD_NAME "ip" 106 #define IPV4_ADDR_LEN 4 107 #define IP_ADDR_LEN IPV4_ADDR_LEN 108 #define IP_ARP_PROTO_TYPE 0x0800 109 110 #define IPV4_VERSION 4 111 #define IP_VERSION IPV4_VERSION 112 #define IP_SIMPLE_HDR_LENGTH_IN_WORDS 5 113 #define IP_SIMPLE_HDR_LENGTH 20 114 #define IP_MAX_HDR_LENGTH 60 115 116 #define IP_MIN_MTU (IP_MAX_HDR_LENGTH + 8) /* 68 bytes */ 117 118 /* 119 * XXX IP_MAXPACKET is defined in <netinet/ip.h> as well. At some point the 120 * 2 files should be cleaned up to remove all redundant definitions. 121 */ 122 #define IP_MAXPACKET 65535 123 #define IP_SIMPLE_HDR_VERSION \ 124 ((IP_VERSION << 4) | IP_SIMPLE_HDR_LENGTH_IN_WORDS) 125 126 /* 127 * Constants and type definitions to support IP IOCTL commands 128 */ 129 #define IP_IOCTL (('i'<<8)|'p') 130 #define IP_IOC_IRE_DELETE 4 131 #define IP_IOC_IRE_DELETE_NO_REPLY 5 132 #define IP_IOC_IRE_ADVISE_NO_REPLY 6 133 #define IP_IOC_RTS_REQUEST 7 134 135 /* Common definitions used by IP IOCTL data structures */ 136 typedef struct ipllcmd_s { 137 uint_t ipllc_cmd; 138 uint_t ipllc_name_offset; 139 uint_t ipllc_name_length; 140 } ipllc_t; 141 142 /* IP IRE Change Command Structure. */ 143 typedef struct ipic_s { 144 ipllc_t ipic_ipllc; 145 uint_t ipic_ire_type; 146 uint_t ipic_max_frag; 147 uint_t ipic_addr_offset; 148 uint_t ipic_addr_length; 149 uint_t ipic_mask_offset; 150 uint_t ipic_mask_length; 151 uint_t ipic_src_addr_offset; 152 uint_t ipic_src_addr_length; 153 uint_t ipic_ll_hdr_offset; 154 uint_t ipic_ll_hdr_length; 155 uint_t ipic_gateway_addr_offset; 156 uint_t ipic_gateway_addr_length; 157 clock_t ipic_rtt; 158 uint32_t ipic_ssthresh; 159 clock_t ipic_rtt_sd; 160 uchar_t ipic_ire_marks; 161 } ipic_t; 162 163 #define ipic_cmd ipic_ipllc.ipllc_cmd 164 #define ipic_ll_name_length ipic_ipllc.ipllc_name_length 165 #define ipic_ll_name_offset ipic_ipllc.ipllc_name_offset 166 167 /* IP IRE Delete Command Structure. */ 168 typedef struct ipid_s { 169 ipllc_t ipid_ipllc; 170 uint_t ipid_ire_type; 171 uint_t ipid_addr_offset; 172 uint_t ipid_addr_length; 173 uint_t ipid_mask_offset; 174 uint_t ipid_mask_length; 175 } ipid_t; 176 177 #define ipid_cmd ipid_ipllc.ipllc_cmd 178 179 #ifdef _KERNEL 180 /* 181 * Temporary state for ip options parser. 182 */ 183 typedef struct ipoptp_s 184 { 185 uint8_t *ipoptp_next; /* next option to look at */ 186 uint8_t *ipoptp_end; /* end of options */ 187 uint8_t *ipoptp_cur; /* start of current option */ 188 uint8_t ipoptp_len; /* length of current option */ 189 uint32_t ipoptp_flags; 190 } ipoptp_t; 191 192 /* 193 * Flag(s) for ipoptp_flags 194 */ 195 #define IPOPTP_ERROR 0x00000001 196 #endif /* _KERNEL */ 197 198 199 /* Controls forwarding of IP packets, set via ndd */ 200 #define IP_FORWARD_NEVER 0 201 #define IP_FORWARD_ALWAYS 1 202 203 #define WE_ARE_FORWARDING (ip_g_forward == IP_FORWARD_ALWAYS) 204 205 #define IPH_HDR_LENGTH(ipha) \ 206 ((int)(((ipha_t *)ipha)->ipha_version_and_hdr_length & 0xF) << 2) 207 208 #define IPH_HDR_VERSION(ipha) \ 209 ((int)(((ipha_t *)ipha)->ipha_version_and_hdr_length) >> 4) 210 211 #ifdef _KERNEL 212 /* 213 * IP reassembly macros. We hide starting and ending offsets in b_next and 214 * b_prev of messages on the reassembly queue. The messages are chained using 215 * b_cont. These macros are used in ip_reassemble() so we don't have to see 216 * the ugly casts and assignments. 217 * Note that the offsets are <= 64k i.e. a uint_t is sufficient to represent 218 * them. 219 */ 220 #define IP_REASS_START(mp) ((uint_t)(uintptr_t)((mp)->b_next)) 221 #define IP_REASS_SET_START(mp, u) \ 222 ((mp)->b_next = (mblk_t *)(uintptr_t)(u)) 223 #define IP_REASS_END(mp) ((uint_t)(uintptr_t)((mp)->b_prev)) 224 #define IP_REASS_SET_END(mp, u) \ 225 ((mp)->b_prev = (mblk_t *)(uintptr_t)(u)) 226 227 #define IP_REASS_COMPLETE 0x1 228 #define IP_REASS_PARTIAL 0x2 229 #define IP_REASS_FAILED 0x4 230 231 /* 232 * Test to determine whether this is a module instance of IP or a 233 * driver instance of IP. 234 */ 235 #define CONN_Q(q) (WR(q)->q_next == NULL) 236 237 #define Q_TO_CONN(q) ((conn_t *)(q)->q_ptr) 238 #define Q_TO_TCP(q) (Q_TO_CONN((q))->conn_tcp) 239 240 /* 241 * The following two macros are used by IP to get the appropriate 242 * wq and rq for a conn. If it is a TCP conn, then we need 243 * tcp_wq/tcp_rq else, conn_wq/conn_rq. IP can use conn_wq and conn_rq 244 * from a conn directly if it knows that the conn is not TCP. 245 */ 246 #define CONNP_TO_WQ(connp) \ 247 (((connp)->conn_tcp == NULL) ? (connp)->conn_wq : \ 248 (connp)->conn_tcp->tcp_wq) 249 250 #define CONNP_TO_RQ(connp) RD(CONNP_TO_WQ(connp)) 251 252 #define IS_TCP_CONN(connp) (((connp)->conn_flags & IPCL_TCP) != 0) 253 254 #define GRAB_CONN_LOCK(q) { \ 255 if (q != NULL && CONN_Q(q)) \ 256 mutex_enter(&(Q_TO_CONN(q))->conn_lock); \ 257 } 258 259 #define RELEASE_CONN_LOCK(q) { \ 260 if (q != NULL && CONN_Q(q)) \ 261 mutex_exit(&(Q_TO_CONN(q))->conn_lock); \ 262 } 263 264 /* "Congestion controlled" protocol */ 265 #define IP_FLOW_CONTROLLED_ULP(p) ((p) == IPPROTO_TCP || (p) == IPPROTO_SCTP) 266 267 /* 268 * Complete the pending operation. Usually an ioctl. Can also 269 * be a bind or option management request that got enqueued 270 * in an ipsq_t. Called on completion of the operation. 271 */ 272 #define CONN_OPER_PENDING_DONE(connp) { \ 273 mutex_enter(&(connp)->conn_lock); \ 274 (connp)->conn_oper_pending_ill = NULL; \ 275 cv_broadcast(&(connp)->conn_refcv); \ 276 mutex_exit(&(connp)->conn_lock); \ 277 CONN_DEC_REF(connp); \ 278 } 279 280 /* Get the credential of an IP queue of unknown type */ 281 #define GET_QUEUE_CRED(wq) \ 282 ((wq)->q_next ? (((ill_t *)(wq)->q_ptr)->ill_credp) \ 283 : ((Q_TO_CONN((wq)))->conn_cred)) 284 285 /* 286 * Flags for the various ip_fanout_* routines. 287 */ 288 #define IP_FF_SEND_ICMP 0x01 /* Send an ICMP error */ 289 #define IP_FF_HDR_COMPLETE 0x02 /* Call ip_hdr_complete if error */ 290 #define IP_FF_CKSUM 0x04 /* Recompute ipha_cksum if error */ 291 #define IP_FF_RAWIP 0x08 /* Use rawip mib variable */ 292 #define IP_FF_SRC_QUENCH 0x10 /* OK to send ICMP_SOURCE_QUENCH */ 293 #define IP_FF_SYN_ADDIRE 0x20 /* Add IRE if TCP syn packet */ 294 #define IP_FF_IP6INFO 0x80 /* Add ip6i_t if needed */ 295 #define IP_FF_SEND_SLLA 0x100 /* Send source link layer info ? */ 296 #define IPV6_REACHABILITY_CONFIRMATION 0x200 /* Flags for ip_xmit_v6 */ 297 #define IP_FF_NO_MCAST_LOOP 0x400 /* No multicasts for sending zone */ 298 299 /* 300 * Following flags are used by IPQoS to determine if policy processing is 301 * required. 302 */ 303 #define IP6_NO_IPPOLICY 0x800 /* Don't do IPQoS processing */ 304 #define IP6_IN_LLMCAST 0x1000 /* Multicast */ 305 #define IP6_IN_NOCKSUM 0x2000 /* Don't compute checksum */ 306 307 #define IP_FF_LOOPBACK 0x4000 /* Loopback fanout */ 308 309 #ifndef IRE_DB_TYPE 310 #define IRE_DB_TYPE M_SIG 311 #endif 312 313 #ifndef IRE_DB_REQ_TYPE 314 #define IRE_DB_REQ_TYPE M_PCSIG 315 #endif 316 317 /* 318 * Values for squeue switch: 319 */ 320 321 #define IP_SQUEUE_ENTER_NODRAIN 1 322 #define IP_SQUEUE_ENTER 2 323 /* 324 * This is part of the interface between Transport provider and 325 * IP which can be used to set policy information. This is usually 326 * accompanied with O_T_BIND_REQ/T_BIND_REQ.ip_bind assumes that 327 * only IPSEC_POLICY_SET is there when it is found in the chain. 328 * The information contained is an struct ipsec_req_t. On success 329 * or failure, either the T_BIND_ACK or the T_ERROR_ACK is returned. 330 * IPSEC_POLICY_SET is never returned. 331 */ 332 #define IPSEC_POLICY_SET M_SETOPTS 333 334 #define IRE_IS_LOCAL(ire) ((ire != NULL) && \ 335 ((ire)->ire_type & (IRE_LOCAL | IRE_LOOPBACK))) 336 337 #define IRE_IS_TARGET(ire) ((ire != NULL) && \ 338 ((ire)->ire_type != IRE_BROADCAST)) 339 340 /* IP Fragmentation Reassembly Header */ 341 typedef struct ipf_s { 342 struct ipf_s *ipf_hash_next; 343 struct ipf_s **ipf_ptphn; /* Pointer to previous hash next. */ 344 uint32_t ipf_ident; /* Ident to match. */ 345 uint8_t ipf_protocol; /* Protocol to match. */ 346 uchar_t ipf_last_frag_seen : 1; /* Last fragment seen ? */ 347 time_t ipf_timestamp; /* Reassembly start time. */ 348 mblk_t *ipf_mp; /* mblk we live in. */ 349 mblk_t *ipf_tail_mp; /* Frag queue tail pointer. */ 350 int ipf_hole_cnt; /* Number of holes (hard-case). */ 351 int ipf_end; /* Tail end offset (0 -> hard-case). */ 352 uint_t ipf_gen; /* Frag queue generation */ 353 size_t ipf_count; /* Count of bytes used by frag */ 354 uint_t ipf_nf_hdr_len; /* Length of nonfragmented header */ 355 in6_addr_t ipf_v6src; /* IPv6 source address */ 356 in6_addr_t ipf_v6dst; /* IPv6 dest address */ 357 uint_t ipf_prev_nexthdr_offset; /* Offset for nexthdr value */ 358 uint8_t ipf_ecn; /* ECN info for the fragments */ 359 uint8_t ipf_num_dups; /* Number of times dup frags recvd */ 360 } ipf_t; 361 362 #define ipf_src V4_PART_OF_V6(ipf_v6src) 363 #define ipf_dst V4_PART_OF_V6(ipf_v6dst) 364 365 typedef enum { 366 IB_PKT = 0x01, 367 OB_PKT = 0x02 368 } ip_pkt_t; 369 370 #define UPDATE_IB_PKT_COUNT(ire)\ 371 { \ 372 (ire)->ire_ib_pkt_count++; \ 373 if ((ire)->ire_ipif != NULL) { \ 374 /* \ 375 * forwarding packet \ 376 */ \ 377 if ((ire)->ire_type & (IRE_LOCAL|IRE_BROADCAST)) \ 378 atomic_add_32(&(ire)->ire_ipif->ipif_ib_pkt_count, 1);\ 379 else \ 380 atomic_add_32(&(ire)->ire_ipif->ipif_fo_pkt_count, 1);\ 381 } \ 382 } 383 #define UPDATE_OB_PKT_COUNT(ire)\ 384 { \ 385 (ire)->ire_ob_pkt_count++;\ 386 if ((ire)->ire_ipif != NULL) { \ 387 atomic_add_32(&(ire)->ire_ipif->ipif_ob_pkt_count, 1); \ 388 } \ 389 } 390 391 392 #define IP_RPUT_LOCAL(q, mp, ipha, ire, recv_ill) \ 393 { \ 394 switch (ipha->ipha_protocol) { \ 395 case IPPROTO_UDP: \ 396 ip_udp_input(q, mp, ipha, ire, recv_ill); \ 397 break; \ 398 default: \ 399 ip_proto_input(q, mp, ipha, ire, recv_ill); \ 400 break; \ 401 } \ 402 } 403 404 405 #endif /* _KERNEL */ 406 407 /* ICMP types */ 408 #define ICMP_ECHO_REPLY 0 409 #define ICMP_DEST_UNREACHABLE 3 410 #define ICMP_SOURCE_QUENCH 4 411 #define ICMP_REDIRECT 5 412 #define ICMP_ECHO_REQUEST 8 413 #define ICMP_ROUTER_ADVERTISEMENT 9 414 #define ICMP_ROUTER_SOLICITATION 10 415 #define ICMP_TIME_EXCEEDED 11 416 #define ICMP_PARAM_PROBLEM 12 417 #define ICMP_TIME_STAMP_REQUEST 13 418 #define ICMP_TIME_STAMP_REPLY 14 419 #define ICMP_INFO_REQUEST 15 420 #define ICMP_INFO_REPLY 16 421 #define ICMP_ADDRESS_MASK_REQUEST 17 422 #define ICMP_ADDRESS_MASK_REPLY 18 423 424 /* ICMP_TIME_EXCEEDED codes */ 425 #define ICMP_TTL_EXCEEDED 0 426 #define ICMP_REASSEMBLY_TIME_EXCEEDED 1 427 428 /* ICMP_DEST_UNREACHABLE codes */ 429 #define ICMP_NET_UNREACHABLE 0 430 #define ICMP_HOST_UNREACHABLE 1 431 #define ICMP_PROTOCOL_UNREACHABLE 2 432 #define ICMP_PORT_UNREACHABLE 3 433 #define ICMP_FRAGMENTATION_NEEDED 4 434 #define ICMP_SOURCE_ROUTE_FAILED 5 435 #define ICMP_DEST_NET_UNKNOWN 6 436 #define ICMP_DEST_HOST_UNKNOWN 7 437 #define ICMP_SRC_HOST_ISOLATED 8 438 #define ICMP_DEST_NET_UNREACH_ADMIN 9 439 #define ICMP_DEST_HOST_UNREACH_ADMIN 10 440 #define ICMP_DEST_NET_UNREACH_TOS 11 441 #define ICMP_DEST_HOST_UNREACH_TOS 12 442 443 /* ICMP Header Structure */ 444 typedef struct icmph_s { 445 uint8_t icmph_type; 446 uint8_t icmph_code; 447 uint16_t icmph_checksum; 448 union { 449 struct { /* ECHO request/response structure */ 450 uint16_t u_echo_ident; 451 uint16_t u_echo_seqnum; 452 } u_echo; 453 struct { /* Destination unreachable structure */ 454 uint16_t u_du_zero; 455 uint16_t u_du_mtu; 456 } u_du; 457 struct { /* Parameter problem structure */ 458 uint8_t u_pp_ptr; 459 uint8_t u_pp_rsvd[3]; 460 } u_pp; 461 struct { /* Redirect structure */ 462 ipaddr_t u_rd_gateway; 463 } u_rd; 464 } icmph_u; 465 } icmph_t; 466 467 #define icmph_echo_ident icmph_u.u_echo.u_echo_ident 468 #define icmph_echo_seqnum icmph_u.u_echo.u_echo_seqnum 469 #define icmph_du_zero icmph_u.u_du.u_du_zero 470 #define icmph_du_mtu icmph_u.u_du.u_du_mtu 471 #define icmph_pp_ptr icmph_u.u_pp.u_pp_ptr 472 #define icmph_rd_gateway icmph_u.u_rd.u_rd_gateway 473 474 #define ICMPH_SIZE 8 475 476 /* 477 * Minimum length of transport layer header included in an ICMP error 478 * message for it to be considered valid. 479 */ 480 #define ICMP_MIN_TP_HDR_LEN 8 481 482 /* Aligned IP header */ 483 typedef struct ipha_s { 484 uint8_t ipha_version_and_hdr_length; 485 uint8_t ipha_type_of_service; 486 uint16_t ipha_length; 487 uint16_t ipha_ident; 488 uint16_t ipha_fragment_offset_and_flags; 489 uint8_t ipha_ttl; 490 uint8_t ipha_protocol; 491 uint16_t ipha_hdr_checksum; 492 ipaddr_t ipha_src; 493 ipaddr_t ipha_dst; 494 } ipha_t; 495 496 #define IPH_DF 0x4000 /* Don't fragment */ 497 #define IPH_MF 0x2000 /* More fragments to come */ 498 #define IPH_OFFSET 0x1FFF /* Where the offset lives */ 499 #define IPH_FRAG_HDR 0x8000 /* IPv6 don't fragment bit */ 500 501 /* ECN code points for IPv4 TOS byte and IPv6 traffic class octet. */ 502 #define IPH_ECN_NECT 0x0 /* Not ECN-Capabable Transport */ 503 #define IPH_ECN_ECT1 0x1 /* ECN-Capable Transport, ECT(1) */ 504 #define IPH_ECN_ECT0 0x2 /* ECN-Capable Transport, ECT(0) */ 505 #define IPH_ECN_CE 0x3 /* ECN-Congestion Experienced (CE) */ 506 507 /* IP Mac info structure */ 508 typedef struct ip_m_s { 509 t_uscalar_t ip_m_mac_type; /* From <sys/dlpi.h> */ 510 int ip_m_type; /* From <net/if_types.h> */ 511 boolean_t (*ip_m_v4mapinfo)(uint_t, uint8_t *, uint8_t *, 512 uint32_t *, ipaddr_t *); 513 boolean_t (*ip_m_v6mapinfo)(uint_t, uint8_t *, uint8_t *, 514 uint32_t *, in6_addr_t *); 515 boolean_t (*ip_m_v6intfid)(uint_t, uint8_t *, in6_addr_t *); 516 } ip_m_t; 517 518 /* 519 * The following functions attempt to reduce the link layer dependency 520 * of the IP stack. The current set of link specific operations are: 521 * a. map from IPv4 class D (224.0/4) multicast address range to the link 522 * layer multicast address range. 523 * b. map from IPv6 multicast address range (ff00::/8) to the link 524 * layer multicast address range. 525 * c. derive the default IPv6 interface identifier from the link layer 526 * address. 527 */ 528 #define MEDIA_V4MINFO(ip_m, plen, bphys, maddr, hwxp, v4ptr) \ 529 (((ip_m)->ip_m_v4mapinfo != NULL) && \ 530 (*(ip_m)->ip_m_v4mapinfo)(plen, bphys, maddr, hwxp, v4ptr)) 531 #define MEDIA_V6INTFID(ip_m, plen, phys, v6ptr) \ 532 (((ip_m)->ip_m_v6intfid != NULL) && \ 533 (*(ip_m)->ip_m_v6intfid)(plen, phys, v6ptr)) 534 #define MEDIA_V6MINFO(ip_m, plen, bphys, maddr, hwxp, v6ptr) \ 535 (((ip_m)->ip_m_v6mapinfo != NULL) && \ 536 (*(ip_m)->ip_m_v6mapinfo)(plen, bphys, maddr, hwxp, v6ptr)) 537 538 /* Router entry types */ 539 #define IRE_BROADCAST 0x0001 /* Route entry for broadcast address */ 540 #define IRE_DEFAULT 0x0002 /* Route entry for default gateway */ 541 #define IRE_LOCAL 0x0004 /* Route entry for local address */ 542 #define IRE_LOOPBACK 0x0008 /* Route entry for loopback address */ 543 #define IRE_PREFIX 0x0010 /* Route entry for prefix routes */ 544 #define IRE_CACHE 0x0020 /* Cached Route entry */ 545 #define IRE_IF_NORESOLVER 0x0040 /* Route entry for local interface */ 546 /* net without any address mapping. */ 547 #define IRE_IF_RESOLVER 0x0080 /* Route entry for local interface */ 548 /* net with resolver. */ 549 #define IRE_HOST 0x0100 /* Host route entry */ 550 #define IRE_HOST_REDIRECT 0x0200 /* Host route entry from redirects */ 551 552 /* 553 * IRE_MIPRTUN is only set on the ires in the ip_mrtun_table. 554 * This ire_type must not be set for ftable and ctable routing entries. 555 */ 556 #define IRE_MIPRTUN 0x0400 /* Reverse tunnel route entry */ 557 558 #define IRE_INTERFACE (IRE_IF_NORESOLVER | IRE_IF_RESOLVER) 559 #define IRE_OFFSUBNET (IRE_DEFAULT | IRE_PREFIX | IRE_HOST | \ 560 IRE_HOST_REDIRECT) 561 #define IRE_CACHETABLE (IRE_CACHE | IRE_BROADCAST | IRE_LOCAL | \ 562 IRE_LOOPBACK) 563 #define IRE_FORWARDTABLE (IRE_INTERFACE | IRE_OFFSUBNET) 564 565 /* 566 * If an IRE is marked with IRE_MARK_CONDEMNED, the last walker of 567 * the bucket should delete this IRE from this bucket. 568 */ 569 #define IRE_MARK_CONDEMNED 0x0001 570 /* 571 * If a broadcast IRE is marked with IRE_MARK_NORECV, ip_rput will drop the 572 * broadcast packets received on that interface. This is marked only 573 * on broadcast ires. Employed by IPMP, where we have multiple NICs on the 574 * same subnet receiving the same broadcast packet. 575 */ 576 #define IRE_MARK_NORECV 0x0002 577 /* 578 * IRE_CACHE marked this way won't be returned by ire_cache_lookup. Need 579 * to look specifically using MATCH_IRE_MARK_HIDDEN. Used by IPMP. 580 */ 581 #define IRE_MARK_HIDDEN 0x0004 /* Typically Used by in.mpathd */ 582 583 /* 584 * ire with IRE_MARK_NOADD is created in ip_newroute_ipif, when outgoing 585 * interface is specified by IP_XMIT_IF socket option. This ire is not 586 * added in IRE_CACHE. For example, this is used by mipagent to prevent 587 * any entry to be added in the cache table. We do not want to add any 588 * entry for a mobile-node in the routing table for foreign agent originated 589 * packets. Adding routes in cache table in this case, may run the risks of 590 * incorrect routing path in case of private overlapping addresses. 591 */ 592 #define IRE_MARK_NOADD 0x0008 /* Mark not to add ire in cache */ 593 594 /* 595 * IRE marked with IRE_MARK_TEMPORARY means that this IRE has been used 596 * either for forwarding a packet or has not been used for sending 597 * traffic on TCP connections terminated on this system. In both 598 * cases, this IRE is the first to go when IRE is being cleaned up. 599 */ 600 #define IRE_MARK_TEMPORARY 0x0010 601 602 /* 603 * IRE marked with IRE_MARK_USESRC_CHECK means that while adding an IRE with 604 * this mark, additional atomic checks need to be performed. For eg: by the 605 * time an IRE_CACHE is created, sent up to ARP and then comes back to IP; the 606 * usesrc grouping could have changed in which case we want to fail adding 607 * the IRE_CACHE entry 608 */ 609 #define IRE_MARK_USESRC_CHECK 0x0020 610 611 /* Flags with ire_expire routine */ 612 #define FLUSH_ARP_TIME 0x0001 /* ARP info potentially stale timer */ 613 #define FLUSH_REDIRECT_TIME 0x0002 /* Redirects potentially stale */ 614 #define FLUSH_MTU_TIME 0x0004 /* Include path MTU per RFC 1191 */ 615 616 /* Arguments to ire_flush_cache() */ 617 #define IRE_FLUSH_DELETE 0 618 #define IRE_FLUSH_ADD 1 619 620 /* 621 * Open/close synchronization flags. 622 * These are kept in a separate field in the conn and the synchronization 623 * depends on the atomic 32 bit access to that field. 624 */ 625 #define CONN_CLOSING 0x01 /* ip_close waiting for ip_wsrv */ 626 #define CONN_IPSEC_LOAD_WAIT 0x10 /* waiting for load */ 627 #define CONN_CONDEMNED 0x40 /* conn is closing, no more refs */ 628 #define CONN_INCIPIENT 0x80 /* conn not yet visible, no refs */ 629 630 /* 631 * Parameter to ip_output giving the identity of the caller. 632 * IP_WSRV means the packet was enqueued in the STREAMS queue 633 * due to flow control and is now being reprocessed in the context of 634 * the STREAMS service procedure, consequent to flow control relief. 635 * IRE_SEND means the packet is being reprocessed consequent to an 636 * ire cache creation and addition and this may or may not be happening 637 * in the service procedure context. Anything other than the above 2 638 * cases is identified as IP_WPUT. Most commonly this is the case of 639 * packets coming down from the application. 640 */ 641 #ifdef _KERNEL 642 #define IP_WSRV 1 /* Called from ip_wsrv */ 643 #define IP_WPUT 2 /* Called from ip_wput */ 644 #define IRE_SEND 3 /* Called from ire_send */ 645 646 /* 647 * Extra structures need for per-src-addr filtering (IGMPv3/MLDv2) 648 */ 649 #define MAX_FILTER_SIZE 64 650 651 typedef struct slist_s { 652 int sl_numsrc; 653 in6_addr_t sl_addr[MAX_FILTER_SIZE]; 654 } slist_t; 655 656 /* 657 * Following struct is used to maintain retransmission state for 658 * a multicast group. One rtx_state_t struct is an in-line field 659 * of the ilm_t struct; the slist_ts in the rtx_state_t struct are 660 * alloc'd as needed. 661 */ 662 typedef struct rtx_state_s { 663 uint_t rtx_timer; /* retrans timer */ 664 int rtx_cnt; /* retrans count */ 665 int rtx_fmode_cnt; /* retrans count for fmode change */ 666 slist_t *rtx_allow; 667 slist_t *rtx_block; 668 } rtx_state_t; 669 670 /* 671 * Used to construct list of multicast address records that will be 672 * sent in a single listener report. 673 */ 674 typedef struct mrec_s { 675 struct mrec_s *mrec_next; 676 uint8_t mrec_type; 677 uint8_t mrec_auxlen; /* currently unused */ 678 in6_addr_t mrec_group; 679 slist_t mrec_srcs; 680 } mrec_t; 681 682 /* Group membership list per upper conn */ 683 /* 684 * XXX add ilg info for ifaddr/ifindex. 685 * XXX can we make ilg survive an ifconfig unplumb + plumb 686 * by setting the ipif/ill to NULL and recover that later? 687 * 688 * ilg_ipif is used by IPv4 as multicast groups are joined using an interface 689 * address (ipif). 690 * ilg_ill is used by IPv6 as multicast groups are joined using an interface 691 * index (phyint->phyint_ifindex). 692 * ilg_ill is NULL for IPv4 and ilg_ipif is NULL for IPv6. 693 * 694 * ilg records the state of multicast memberships of a socket end point. 695 * ilm records the state of multicast memberships with the driver and is 696 * maintained per interface. 697 * 698 * Notes : 699 * 700 * 1) There is no direct link between a given ilg and ilm. If the 701 * application has joined a group G with ifindex I, we will have 702 * an ilg with ilg_v6group and ilg_ill. There will be a corresponding 703 * ilm with ilm_ill/ilm_v6addr recording the multicast membership. 704 * To delete the membership, 705 * 706 * a) Search for ilg matching on G and I with ilg_v6group 707 * and ilg_ill. Delete ilg_ill. 708 * b) Search the corresponding ilm matching on G and I with 709 * ilm_v6addr and ilm_ill. Delete ilm. 710 * 711 * In IPv4, the only difference is, we look using ipifs instead of 712 * ills. 713 * 714 * 2) With IP multipathing, we want to keep receiving even after the 715 * interface has failed. We do this by moving multicast memberships 716 * to a new_ill within the group. This is acheived by sending 717 * DL_DISABMULTI_REQS on ilg_ill/ilm_ill and sending DL_ENABMULTIREQS 718 * on the new_ill and changing ilg_ill/ilm_ill to new_ill. But, we 719 * need to be able to delete memberships which will still come down 720 * with the ifindex of the old ill which is what the application 721 * knows of. Thus we store the ilm_/ilg_orig_ifindex to keep track 722 * of where we joined initially so that we can lookup even after we 723 * moved the membership. It is also used for moving back the membership 724 * when the old ill has been repaired. This is done by looking up for 725 * ilms with ilm_orig_ifindex matching on the old ill's ifindex. Only 726 * ilms actually move from old ill to new ill. ilgs don't move (just 727 * the ilg_ill is changed when it moves) as it just records the state 728 * of the application that has joined a group G where as ilm records 729 * the state joined with the driver. Thus when we send DL_XXXMULTI_REQs 730 * we also need to keep the ilm in the right ill. 731 * 732 * In IPv4, as ipifs move from old ill to new_ill, ilgs and ilms move 733 * implicitly as we use only ipifs in IPv4. Thus, one can always lookup 734 * a given ilm/ilg even after it fails without the support of 735 * orig_ifindex. We move ilms still to record the driver state as 736 * mentioned above. 737 */ 738 739 /* 740 * The ilg_t and ilm_t members are protected by ipsq. They can be changed only 741 * by a thread executing in the ipsq. In other words add/delete of a 742 * multicast group has to execute in the ipsq. 743 */ 744 #define ILG_DELETED 0x1 /* ilg_flags */ 745 typedef struct ilg_s { 746 in6_addr_t ilg_v6group; 747 struct ipif_s *ilg_ipif; /* Logical interface we are member on */ 748 struct ill_s *ilg_ill; /* Used by IPv6 */ 749 int ilg_orig_ifindex; /* Interface originally joined on */ 750 uint_t ilg_flags; 751 mcast_record_t ilg_fmode; /* MODE_IS_INCLUDE/MODE_IS_EXCLUDE */ 752 slist_t *ilg_filter; 753 } ilg_t; 754 755 756 /* 757 * Multicast address list entry for lower ill. 758 * ilm_ipif is used by IPv4 as multicast groups are joined using ipif. 759 * ilm_ill is used by IPv6 as multicast groups are joined using ill. 760 * ilm_ill is NULL for IPv4 and ilm_ipif is NULL for IPv6. 761 */ 762 #define ILM_DELETED 0x1 /* ilm_flags */ 763 typedef struct ilm_s { 764 in6_addr_t ilm_v6addr; 765 int ilm_refcnt; 766 uint_t ilm_timer; /* IGMP/MLD query resp timer, in msec */ 767 struct ipif_s *ilm_ipif; /* Back pointer to ipif for IPv4 */ 768 struct ilm_s *ilm_next; /* Linked list for each ill */ 769 uint_t ilm_state; /* state of the membership */ 770 struct ill_s *ilm_ill; /* Back pointer to ill for IPv6 */ 771 int ilm_orig_ifindex; /* V6_MULTICAST_IF/ilm_ipif index */ 772 uint_t ilm_flags; 773 boolean_t ilm_is_new; /* new ilm */ 774 boolean_t ilm_notify_driver; /* Need to notify the driver */ 775 boolean_t ilm_join_mld; /* call mld_joingroup */ 776 zoneid_t ilm_zoneid; 777 int ilm_no_ilg_cnt; /* number of joins w/ no ilg */ 778 mcast_record_t ilm_fmode; /* MODE_IS_INCLUDE/MODE_IS_EXCLUDE */ 779 slist_t *ilm_filter; /* source filter list */ 780 slist_t *ilm_pendsrcs; /* relevant src addrs for pending req */ 781 rtx_state_t ilm_rtx; /* SCR retransmission state */ 782 } ilm_t; 783 784 #define ilm_addr V4_PART_OF_V6(ilm_v6addr) 785 786 /* 787 * ilm_walker_cleanup needs to execute when the ilm_walker_cnt goes down to 788 * zero. In addition it needs to block new walkers while it is unlinking ilm's 789 * from the list. Thus simple atomics for the ill_ilm_walker_cnt don't suffice. 790 */ 791 #define ILM_WALKER_HOLD(ill) { \ 792 mutex_enter(&(ill)->ill_lock); \ 793 ill->ill_ilm_walker_cnt++; \ 794 mutex_exit(&(ill)->ill_lock); \ 795 } 796 797 #define ILM_WALKER_RELE(ill) { \ 798 mutex_enter(&(ill)->ill_lock); \ 799 (ill)->ill_ilm_walker_cnt--; \ 800 if ((ill)->ill_ilm_walker_cnt == 0 && (ill)->ill_ilm_cleanup_reqd) \ 801 ilm_walker_cleanup(ill); \ 802 mutex_exit(&(ill)->ill_lock); \ 803 } 804 805 /* 806 * Soft reference to an IPsec SA. 807 * 808 * On relative terms, conn's can be persistant (living as long as the 809 * processes which create them), while SA's are ephemeral (dying when 810 * they hit their time-based or byte-based lifetimes). 811 * 812 * We could hold a hard reference to an SA from an ipsec_latch_t, 813 * but this would cause expired SA's to linger for a potentially 814 * unbounded time. 815 * 816 * Instead, we remember the hash bucket number and bucket generation 817 * in addition to the pointer. The bucket generation is incremented on 818 * each deletion. 819 */ 820 typedef struct ipsa_ref_s 821 { 822 struct ipsa_s *ipsr_sa; 823 struct isaf_s *ipsr_bucket; 824 uint64_t ipsr_gen; 825 } ipsa_ref_t; 826 827 /* 828 * IPsec "latching" state. 829 * 830 * In the presence of IPsec policy, fully-bound conn's bind a connection 831 * to more than just the 5-tuple, but also a specific IPsec action and 832 * identity-pair. 833 * 834 * As an optimization, we also cache soft references to IPsec SA's 835 * here so that we can fast-path around most of the work needed for 836 * outbound IPsec SA selection. 837 * 838 * Were it not for TCP's detached connections, this state would be 839 * in-line in conn_t; instead, this is in a separate structure so it 840 * can be handed off to TCP when a connection is detached. 841 */ 842 typedef struct ipsec_latch_s 843 { 844 kmutex_t ipl_lock; 845 uint32_t ipl_refcnt; 846 847 uint64_t ipl_unique; 848 struct ipsec_policy_s *ipl_in_policy; /* latched policy (in) */ 849 struct ipsec_policy_s *ipl_out_policy; /* latched policy (out) */ 850 struct ipsec_action_s *ipl_in_action; /* latched action (in) */ 851 struct ipsec_action_s *ipl_out_action; /* latched action (out) */ 852 cred_t *ipl_local_id; 853 struct ipsid_s *ipl_local_cid; 854 struct ipsid_s *ipl_remote_cid; 855 unsigned int 856 ipl_out_action_latched : 1, 857 ipl_in_action_latched : 1, 858 ipl_out_policy_latched : 1, 859 ipl_in_policy_latched : 1, 860 861 ipl_ids_latched : 1, 862 863 ipl_pad_to_bit_31 : 27; 864 865 ipsa_ref_t ipl_ref[2]; /* 0: ESP, 1: AH */ 866 867 } ipsec_latch_t; 868 869 #define IPLATCH_REFHOLD(ipl) { \ 870 atomic_add_32(&(ipl)->ipl_refcnt, 1); \ 871 ASSERT((ipl)->ipl_refcnt != 0); \ 872 } 873 874 #define IPLATCH_REFRELE(ipl) { \ 875 ASSERT((ipl)->ipl_refcnt != 0); \ 876 membar_exit(); \ 877 if (atomic_add_32_nv(&(ipl)->ipl_refcnt, -1) == 0) \ 878 iplatch_free(ipl); \ 879 } 880 881 /* 882 * peer identity structure. 883 */ 884 885 typedef struct conn_s conn_t; 886 887 /* 888 * The old IP client structure "ipc_t" is gone. All the data is stored in the 889 * connection structure "conn_t" now. The mapping of old and new fields looks 890 * like this: 891 * 892 * ipc_ulp conn_ulp 893 * ipc_rq conn_rq 894 * ipc_wq conn_wq 895 * 896 * ipc_laddr conn_src 897 * ipc_faddr conn_rem 898 * ipc_v6laddr conn_srcv6 899 * ipc_v6faddr conn_remv6 900 * 901 * ipc_lport conn_lport 902 * ipc_fport conn_fport 903 * ipc_ports conn_ports 904 * 905 * ipc_policy conn_policy 906 * ipc_latch conn_latch 907 * 908 * ipc_irc_lock conn_lock 909 * ipc_ire_cache conn_ire_cache 910 * 911 * ipc_state_flags conn_state_flags 912 * ipc_outgoing_ill conn_outgoing_ill 913 * 914 * ipc_dontroute conn_dontroute 915 * ipc_loopback conn_loopback 916 * ipc_broadcast conn_broadcast 917 * ipc_reuseaddr conn_reuseaddr 918 * 919 * ipc_multicast_loop conn_multicast_loop 920 * ipc_multi_router conn_multi_router 921 * ipc_priv_stream conn_priv_stream 922 * ipc_draining conn_draining 923 * 924 * ipc_did_putbq conn_did_putbq 925 * ipc_unspec_src conn_unspec_src 926 * ipc_policy_cached conn_policy_cached 927 * 928 * ipc_in_enforce_policy conn_in_enforce_policy 929 * ipc_out_enforce_policy conn_out_enforce_policy 930 * ipc_af_isv6 conn_af_isv6 931 * ipc_pkt_isv6 conn_pkt_isv6 932 * 933 * ipc_ipv6_recvpktinfo conn_ipv6_recvpktinfo 934 * 935 * ipc_ipv6_recvhoplimit conn_ipv6_recvhoplimit 936 * ipc_ipv6_recvhopopts conn_ipv6_recvhopopts 937 * ipc_ipv6_recvdstopts conn_ipv6_recvdstopts 938 * 939 * ipc_ipv6_recvrthdr conn_ipv6_recvrthdr 940 * ipc_ipv6_recvrtdstopts conn_ipv6_recvrtdstopts 941 * ipc_fully_bound conn_fully_bound 942 * 943 * ipc_recvif conn_recvif 944 * 945 * ipc_recvslla conn_recvslla 946 * ipc_acking_unbind conn_acking_unbind 947 * ipc_pad_to_bit_31 conn_pad_to_bit_31 948 * 949 * ipc_xmit_if_ill conn_xmit_if_ill 950 * ipc_nofailover_ill conn_nofailover_ill 951 * 952 * ipc_proto conn_proto 953 * ipc_incoming_ill conn_incoming_ill 954 * ipc_outgoing_pill conn_outgoing_pill 955 * ipc_pending_ill conn_pending_ill 956 * ipc_unbind_mp conn_unbind_mp 957 * ipc_ilg conn_ilg 958 * ipc_ilg_allocated conn_ilg_allocated 959 * ipc_ilg_inuse conn_ilg_inuse 960 * ipc_ilg_walker_cnt conn_ilg_walker_cnt 961 * ipc_refcv conn_refcv 962 * ipc_multicast_ipif conn_multicast_ipif 963 * ipc_multicast_ill conn_multicast_ill 964 * ipc_orig_bound_ifindex conn_orig_bound_ifindex 965 * ipc_orig_multicast_ifindex conn_orig_multicast_ifindex 966 * ipc_orig_xmit_ifindex conn_orig_xmit_ifindex 967 * ipc_drain_next conn_drain_next 968 * ipc_drain_prev conn_drain_prev 969 * ipc_idl conn_idl 970 */ 971 972 /* 973 * This is used to match an inbound/outbound datagram with 974 * policy. 975 */ 976 977 typedef struct ipsec_selector { 978 in6_addr_t ips_local_addr_v6; 979 in6_addr_t ips_remote_addr_v6; 980 uint16_t ips_local_port; 981 uint16_t ips_remote_port; 982 uint8_t ips_icmp_type; 983 uint8_t ips_icmp_code; 984 uint8_t ips_protocol; 985 uint8_t ips_isv4 : 1, 986 ips_is_icmp_inv_acq: 1; 987 } ipsec_selector_t; 988 989 /* 990 * Note that we put v4 addresses in the *first* 32-bit word of the 991 * selector rather than the last to simplify the prefix match/mask code 992 * in spd.c 993 */ 994 #define ips_local_addr_v4 ips_local_addr_v6.s6_addr32[0] 995 #define ips_remote_addr_v4 ips_remote_addr_v6.s6_addr32[0] 996 997 /* Values used in IP by IPSEC Code */ 998 #define IPSEC_OUTBOUND B_TRUE 999 #define IPSEC_INBOUND B_FALSE 1000 1001 /* 1002 * There are two variants in policy failures. The packet may come in 1003 * secure when not needed (IPSEC_POLICY_???_NOT_NEEDED) or it may not 1004 * have the desired level of protection (IPSEC_POLICY_MISMATCH). 1005 */ 1006 #define IPSEC_POLICY_NOT_NEEDED 0 1007 #define IPSEC_POLICY_MISMATCH 1 1008 #define IPSEC_POLICY_AUTH_NOT_NEEDED 2 1009 #define IPSEC_POLICY_ENCR_NOT_NEEDED 3 1010 #define IPSEC_POLICY_SE_NOT_NEEDED 4 1011 #define IPSEC_POLICY_MAX 5 /* Always max + 1. */ 1012 1013 /* 1014 * Folowing macro is used whenever the code does not know whether there 1015 * is a M_CTL present in the front and it needs to examine the actual mp 1016 * i.e the IP header. As a M_CTL message could be in the front, this 1017 * extracts the packet into mp and the M_CTL mp into first_mp. If M_CTL 1018 * mp is not present, both first_mp and mp point to the same message. 1019 */ 1020 #define EXTRACT_PKT_MP(mp, first_mp, mctl_present) \ 1021 (first_mp) = (mp); \ 1022 if ((mp)->b_datap->db_type == M_CTL) { \ 1023 (mp) = (mp)->b_cont; \ 1024 (mctl_present) = B_TRUE; \ 1025 } else { \ 1026 (mctl_present) = B_FALSE; \ 1027 } 1028 1029 /* 1030 * Check with IPSEC inbound policy if 1031 * 1032 * 1) per-socket policy is present - indicated by conn_in_enforce_policy. 1033 * 2) Or if we have not cached policy on the conn and the global policy is 1034 * non-empty. 1035 */ 1036 #define CONN_INBOUND_POLICY_PRESENT(connp) \ 1037 ((connp)->conn_in_enforce_policy || \ 1038 (!((connp)->conn_policy_cached) && \ 1039 ipsec_inbound_v4_policy_present)) 1040 1041 #define CONN_INBOUND_POLICY_PRESENT_V6(connp) \ 1042 ((connp)->conn_in_enforce_policy || \ 1043 (!(connp)->conn_policy_cached && \ 1044 ipsec_inbound_v6_policy_present)) 1045 1046 #define CONN_OUTBOUND_POLICY_PRESENT(connp) \ 1047 ((connp)->conn_out_enforce_policy || \ 1048 (!((connp)->conn_policy_cached) && \ 1049 ipsec_outbound_v4_policy_present)) 1050 1051 #define CONN_OUTBOUND_POLICY_PRESENT_V6(connp) \ 1052 ((connp)->conn_out_enforce_policy || \ 1053 (!(connp)->conn_policy_cached && \ 1054 ipsec_outbound_v6_policy_present)) 1055 1056 /* 1057 * Information cached in IRE for upper layer protocol (ULP). 1058 * 1059 * Notice that ire_max_frag is not included in the iulp_t structure, which 1060 * it may seem that it should. But ire_max_frag cannot really be cached. It 1061 * is fixed for each interface. For MTU found by PMTUd, we may want to cache 1062 * it. But currently, we do not do that. 1063 */ 1064 typedef struct iulp_s { 1065 boolean_t iulp_set; /* Is any metric set? */ 1066 uint32_t iulp_ssthresh; /* Slow start threshold (TCP). */ 1067 clock_t iulp_rtt; /* Guestimate in millisecs. */ 1068 clock_t iulp_rtt_sd; /* Cached value of RTT variance. */ 1069 uint32_t iulp_spipe; /* Send pipe size. */ 1070 uint32_t iulp_rpipe; /* Receive pipe size. */ 1071 uint32_t iulp_rtomax; /* Max round trip timeout. */ 1072 uint32_t iulp_sack; /* Use SACK option (TCP)? */ 1073 uint32_t 1074 iulp_tstamp_ok : 1, /* Use timestamp option (TCP)? */ 1075 iulp_wscale_ok : 1, /* Use window scale option (TCP)? */ 1076 iulp_ecn_ok : 1, /* Enable ECN (for TCP)? */ 1077 iulp_pmtud_ok : 1, /* Enable PMTUd? */ 1078 1079 iulp_not_used : 28; 1080 } iulp_t; 1081 1082 /* Zero iulp_t. */ 1083 extern const iulp_t ire_uinfo_null; 1084 1085 /* 1086 * The conn drain list structure. 1087 * The list is protected by idl_lock. Each conn_t inserted in the list 1088 * points back at this idl_t using conn_idl. IP primes the draining of the 1089 * conns queued in these lists, by qenabling the 1st conn of each list. This 1090 * occurs when STREAMS backenables ip_wsrv on the IP module. Each conn instance 1091 * of ip_wsrv successively qenables the next conn in the list. 1092 * idl_lock protects all other members of idl_t and conn_drain_next 1093 * and conn_drain_prev of conn_t. The conn_lock protects IPCF_DRAIN_DISABLED 1094 * flag of the conn_t and conn_idl. 1095 */ 1096 typedef struct idl_s { 1097 conn_t *idl_conn; /* Head of drain list */ 1098 kmutex_t idl_lock; /* Lock for this list */ 1099 conn_t *idl_conn_draining; /* conn that is draining */ 1100 uint32_t 1101 idl_repeat : 1, /* Last conn must re-enable */ 1102 /* drain list again */ 1103 idl_unused : 31; 1104 } idl_t; 1105 1106 #define CONN_DRAIN_LIST_LOCK(connp) (&((connp)->conn_idl->idl_lock)) 1107 /* 1108 * Interface route structure which holds the necessary information to recreate 1109 * routes that are tied to an interface (namely where ire_ipif != NULL). 1110 * These routes which were initially created via a routing socket or via the 1111 * SIOCADDRT ioctl may be gateway routes (RTF_GATEWAY being set) or may be 1112 * traditional interface routes. When an interface comes back up after being 1113 * marked down, this information will be used to recreate the routes. These 1114 * are part of an mblk_t chain that hangs off of the IPIF (ipif_saved_ire_mp). 1115 */ 1116 typedef struct ifrt_s { 1117 ushort_t ifrt_type; /* Type of IRE */ 1118 in6_addr_t ifrt_v6addr; /* Address IRE represents. */ 1119 in6_addr_t ifrt_v6gateway_addr; /* Gateway if IRE_OFFSUBNET */ 1120 in6_addr_t ifrt_v6src_addr; /* Src addr if RTF_SETSRC */ 1121 in6_addr_t ifrt_v6mask; /* Mask for matching IRE. */ 1122 uint32_t ifrt_flags; /* flags related to route */ 1123 uint_t ifrt_max_frag; /* MTU (next hop or path). */ 1124 iulp_t ifrt_iulp_info; /* Cached IRE ULP info. */ 1125 } ifrt_t; 1126 1127 #define ifrt_addr V4_PART_OF_V6(ifrt_v6addr) 1128 #define ifrt_gateway_addr V4_PART_OF_V6(ifrt_v6gateway_addr) 1129 #define ifrt_src_addr V4_PART_OF_V6(ifrt_v6src_addr) 1130 #define ifrt_mask V4_PART_OF_V6(ifrt_v6mask) 1131 1132 /* Number of IP addresses that can be hosted on a physical interface */ 1133 #define MAX_ADDRS_PER_IF 8192 1134 /* 1135 * Number of Source addresses to be considered for source address 1136 * selection. Used by ipif_select_source[_v6]. 1137 */ 1138 #define MAX_IPIF_SELECT_SOURCE 50 1139 1140 #ifdef IP_DEBUG 1141 /* 1142 * Tracing refholds and refreleases for debugging. Existing tracing mechanisms 1143 * do not allow the granularity need to trace refrences to ipif/ill/ire's. This 1144 * mechanism should be revisited once dtrace is available. 1145 */ 1146 #define IP_STACK_DEPTH 15 1147 typedef struct tr_buf_s { 1148 int tr_depth; 1149 pc_t tr_stack[IP_STACK_DEPTH]; 1150 } tr_buf_t; 1151 1152 typedef struct th_trace_s { 1153 struct th_trace_s *th_next; 1154 struct th_trace_s **th_prev; 1155 kthread_t *th_id; 1156 int th_refcnt; 1157 uint_t th_trace_lastref; 1158 #define TR_BUF_MAX 38 1159 tr_buf_t th_trbuf[TR_BUF_MAX]; 1160 } th_trace_t; 1161 #endif 1162 1163 /* The following are ipif_state_flags */ 1164 #define IPIF_CONDEMNED 0x1 /* The ipif is being removed */ 1165 #define IPIF_CHANGING 0x2 /* A critcal ipif field is changing */ 1166 #define IPIF_MOVING 0x8 /* The ipif is being moved */ 1167 #define IPIF_SET_LINKLOCAL 0x10 /* transient flag during bringup */ 1168 #define IPIF_ZERO_SOURCE 0x20 /* transient flag during bringup */ 1169 1170 /* IP interface structure, one per local address */ 1171 typedef struct ipif_s { 1172 struct ipif_s *ipif_next; 1173 struct ill_s *ipif_ill; /* Back pointer to our ill */ 1174 int ipif_id; /* Logical unit number */ 1175 uint_t ipif_mtu; /* Starts at ipif_ill->ill_max_frag */ 1176 uint_t ipif_saved_mtu; /* Save of mtu during ipif_move() */ 1177 in6_addr_t ipif_v6lcl_addr; /* Local IP address for this if. */ 1178 in6_addr_t ipif_v6src_addr; /* Source IP address for this if. */ 1179 in6_addr_t ipif_v6subnet; /* Subnet prefix for this if. */ 1180 in6_addr_t ipif_v6net_mask; /* Net mask for this interface. */ 1181 in6_addr_t ipif_v6brd_addr; /* Broadcast addr for this interface. */ 1182 in6_addr_t ipif_v6pp_dst_addr; /* Point-to-point dest address. */ 1183 uint64_t ipif_flags; /* Interface flags. */ 1184 uint_t ipif_metric; /* BSD if metric, for compatibility. */ 1185 uint_t ipif_ire_type; /* IRE_LOCAL or IRE_LOOPBACK */ 1186 mblk_t *ipif_arp_del_mp; /* Allocated at time arp comes up, to */ 1187 /* prevent awkward out of mem */ 1188 /* condition later */ 1189 mblk_t *ipif_saved_ire_mp; /* Allocated for each extra */ 1190 /* IRE_IF_NORESOLVER/IRE_IF_RESOLVER */ 1191 /* on this interface so that they */ 1192 /* can survive ifconfig down. */ 1193 kmutex_t ipif_saved_ire_lock; /* Protects ipif_saved_ire_mp */ 1194 1195 mrec_t *ipif_igmp_rpt; /* List of group memberships which */ 1196 /* will be reported on. Used when */ 1197 /* handling an igmp timeout. */ 1198 1199 /* 1200 * The packet counts in the ipif contain the sum of the 1201 * packet counts in dead IREs that were affiliated with 1202 * this ipif. 1203 */ 1204 uint_t ipif_fo_pkt_count; /* Forwarded thru our dead IREs */ 1205 uint_t ipif_ib_pkt_count; /* Inbound packets for our dead IREs */ 1206 uint_t ipif_ob_pkt_count; /* Outbound packets to our dead IREs */ 1207 /* Exclusive bit fields, protected by ipsq_t */ 1208 unsigned int 1209 ipif_multicast_up : 1, /* We have joined the allhosts group */ 1210 ipif_solmcast_up : 1, /* We joined solicited node mcast */ 1211 ipif_replace_zero : 1, /* Replacement for zero */ 1212 ipif_was_up : 1, /* ipif was up before */ 1213 1214 ipif_pad_to_31 : 28; 1215 1216 int ipif_orig_ifindex; /* ifindex before SLIFFAILOVER */ 1217 uint_t ipif_seqid; /* unique index across all ills */ 1218 uint_t ipif_orig_ipifid; /* ipif_id before SLIFFAILOVER */ 1219 uint_t ipif_state_flags; /* See IPIF_* flag defs above */ 1220 uint_t ipif_refcnt; /* active consistent reader cnt */ 1221 uint_t ipif_ire_cnt; /* Number of ire's referencing ipif */ 1222 uint_t ipif_saved_ire_cnt; 1223 zoneid_t 1224 ipif_zoneid; /* zone ID number */ 1225 #ifdef ILL_DEBUG 1226 #define IP_TR_HASH_MAX 64 1227 th_trace_t *ipif_trace[IP_TR_HASH_MAX]; 1228 boolean_t ipif_trace_disable; /* True when alloc fails */ 1229 #endif 1230 } ipif_t; 1231 1232 /* 1233 * The following table lists the protection levels of the various members 1234 * of the ipif_t. The following notation is used. 1235 * 1236 * Write once - Written to only once at the time of bringing up 1237 * the interface and can be safely read after the bringup without any lock. 1238 * 1239 * ipsq - Need to execute in the ipsq to perform the indicated access. 1240 * 1241 * ill_lock - Need to hold this mutex to perform the indicated access. 1242 * 1243 * ill_g_lock - Need to hold this rw lock as reader/writer for read access or 1244 * write access respectively. 1245 * 1246 * down ill - Written to only when the ill is down (i.e all ipifs are down) 1247 * up ill - Read only when the ill is up (i.e. at least 1 ipif is up) 1248 * 1249 * Table of ipif_t members and their protection 1250 * 1251 * ipif_next ill_g_lock ill_g_lock 1252 * ipif_ill ipsq + down ipif write once 1253 * ipif_id ipsq + down ipif write once 1254 * ipif_mtu ipsq 1255 * ipif_v6lcl_addr ipsq + down ipif up ipif 1256 * ipif_v6src_addr ipsq + down ipif up ipif 1257 * ipif_v6subnet ipsq + down ipif up ipif 1258 * ipif_v6net_mask ipsq + down ipif up ipif 1259 * 1260 * ipif_v6brd_addr 1261 * ipif_v6pp_dst_addr 1262 * ipif_flags ill_lock ill_lock 1263 * ipif_metric 1264 * ipif_ire_type ipsq + down ill up ill 1265 * 1266 * ipif_arp_del_mp ipsq ipsq 1267 * ipif_saved_ire_mp ipif_saved_ire_lock ipif_saved_ire_lock 1268 * ipif_igmp_rpt ipsq ipsq 1269 * 1270 * ipif_fo_pkt_count Approx 1271 * ipif_ib_pkt_count Approx 1272 * ipif_ob_pkt_count Approx 1273 * 1274 * bit fields ill_lock ill_lock 1275 * 1276 * ipif_orig_ifindex ipsq None 1277 * ipif_orig_ipifid ipsq None 1278 * ipif_seqid ipsq Write once 1279 * 1280 * ipif_state_flags ill_lock ill_lock 1281 * ipif_refcnt ill_lock ill_lock 1282 * ipif_ire_cnt ill_lock ill_lock 1283 * ipif_saved_ire_cnt 1284 */ 1285 1286 #define IP_TR_HASH(tid) ((((uintptr_t)tid) >> 6) & (IP_TR_HASH_MAX - 1)) 1287 1288 #ifdef ILL_DEBUG 1289 #define IPIF_TRACE_REF(ipif) ipif_trace_ref(ipif) 1290 #define ILL_TRACE_REF(ill) ill_trace_ref(ill) 1291 #define IPIF_UNTRACE_REF(ipif) ipif_untrace_ref(ipif) 1292 #define ILL_UNTRACE_REF(ill) ill_untrace_ref(ill) 1293 #define ILL_TRACE_CLEANUP(ill) ill_trace_cleanup(ill) 1294 #define IPIF_TRACE_CLEANUP(ipif) ipif_trace_cleanup(ipif) 1295 #else 1296 #define IPIF_TRACE_REF(ipif) 1297 #define ILL_TRACE_REF(ill) 1298 #define IPIF_UNTRACE_REF(ipif) 1299 #define ILL_UNTRACE_REF(ill) 1300 #define ILL_TRACE_CLEANUP(ill) 1301 #define IPIF_TRACE_CLEANUP(ipif) 1302 #endif 1303 1304 /* IPv4 compatability macros */ 1305 #define ipif_lcl_addr V4_PART_OF_V6(ipif_v6lcl_addr) 1306 #define ipif_src_addr V4_PART_OF_V6(ipif_v6src_addr) 1307 #define ipif_subnet V4_PART_OF_V6(ipif_v6subnet) 1308 #define ipif_net_mask V4_PART_OF_V6(ipif_v6net_mask) 1309 #define ipif_brd_addr V4_PART_OF_V6(ipif_v6brd_addr) 1310 #define ipif_pp_dst_addr V4_PART_OF_V6(ipif_v6pp_dst_addr) 1311 1312 /* Macros for easy backreferences to the ill. */ 1313 #define ipif_wq ipif_ill->ill_wq 1314 #define ipif_rq ipif_ill->ill_rq 1315 #define ipif_net_type ipif_ill->ill_net_type 1316 #define ipif_resolver_mp ipif_ill->ill_resolver_mp 1317 #define ipif_ipif_up_count ipif_ill->ill_ipif_up_count 1318 #define ipif_bcast_mp ipif_ill->ill_bcast_mp 1319 #define ipif_type ipif_ill->ill_type 1320 #define ipif_isv6 ipif_ill->ill_isv6 1321 1322 #define SIOCLIFADDR_NDX 112 /* ndx of SIOCLIFADDR in the ndx ioctl table */ 1323 1324 /* 1325 * mode value for ip_ioctl_finish for finishing an ioctl 1326 */ 1327 #define CONN_CLOSE 1 /* No mi_copy */ 1328 #define COPYOUT 2 /* do an mi_copyout if needed */ 1329 #define NO_COPYOUT 3 /* do an mi_copy_done */ 1330 1331 /* 1332 * The IP-MT design revolves around the serialization object ipsq_t. 1333 * It is associated with an IPMP group. If IPMP is not enabled, there is 1334 * 1 ipsq_t per phyint. Eg. an ipsq_t would cover both hme0's IPv4 stream 1335 * 1336 * ipsq_lock protects 1337 * ipsq_reentry_cnt, ipsq_writer, ipsq_xopq_mphead, ipsq_xopq_mptail, 1338 * ipsq_mphead, ipsq_mptail, ipsq_split 1339 * 1340 * ipsq_pending_ipif, ipsq_current_ipif, ipsq_pending_mp, ipsq_flags, 1341 * ipsq_waitfor 1342 * 1343 * The fields in the last line above below are set mostly by a writer thread 1344 * But there is an exception in the last call to ipif_ill_refrele_tail which 1345 * could also race with a conn close which could be cleaning up the 1346 * fields. So we choose to protect using ipsq_lock instead of depending on 1347 * the property of the writer. 1348 * ill_g_lock protects 1349 * ipsq_refs, ipsq_phyint_list 1350 */ 1351 typedef struct ipsq_s { 1352 kmutex_t ipsq_lock; 1353 int ipsq_reentry_cnt; 1354 kthread_t *ipsq_writer; /* current owner (thread id) */ 1355 int ipsq_flags; 1356 mblk_t *ipsq_xopq_mphead; /* list of excl ops mostly ioctls */ 1357 mblk_t *ipsq_xopq_mptail; 1358 mblk_t *ipsq_mphead; /* msgs on ipsq linked thru b_next */ 1359 mblk_t *ipsq_mptail; /* msgs on ipsq linked thru b_next */ 1360 ipif_t *ipsq_pending_ipif; /* ipif associated w. ipsq_pending_mp */ 1361 ipif_t *ipsq_current_ipif; /* ipif associated with current ioctl */ 1362 mblk_t *ipsq_pending_mp; /* current ioctl mp while waiting for */ 1363 /* response from another module */ 1364 struct ipsq_s *ipsq_next; /* list of all syncq's (ipsq_g_list) */ 1365 uint_t ipsq_refs; /* Number of phyints on this ipsq */ 1366 struct phyint *ipsq_phyint_list; /* List of phyints on this ipsq */ 1367 boolean_t ipsq_split; /* ipsq may need to be split */ 1368 int ipsq_waitfor; /* Values encoded below */ 1369 char ipsq_name[LIFNAMSIZ+1]; /* same as phyint_groupname */ 1370 int ipsq_last_cmd; /* debugging aid */ 1371 #ifdef ILL_DEBUG 1372 int ipsq_depth; /* debugging aid */ 1373 pc_t ipsq_stack[IP_STACK_DEPTH]; /* debugging aid */ 1374 #endif 1375 } ipsq_t; 1376 1377 /* ipsq_flags */ 1378 #define IPSQ_GROUP 0x1 /* This ipsq belongs to an IPMP group */ 1379 1380 /* 1381 * ipsq_waitfor: 1382 * 1383 * IPIF_DOWN 1 ipif_down waiting for refcnts to drop 1384 * ILL_DOWN 2 ill_down waiting for refcnts to drop 1385 * IPIF_FREE 3 ipif_free waiting for refcnts to drop 1386 * ILL_FREE 4 ill unplumb waiting for refcnts to drop 1387 * ILL_MOVE_OK 5 failover waiting for refcnts to drop 1388 */ 1389 1390 enum { IPIF_DOWN = 1, ILL_DOWN, IPIF_FREE, ILL_FREE, ILL_MOVE_OK }; 1391 1392 /* Flags passed to ipsq_try_enter */ 1393 #define CUR_OP 0 /* Current ioctl continuing again */ 1394 #define NEW_OP 1 /* New ioctl starting afresh */ 1395 1396 /* 1397 * phyint represents state that is common to both IPv4 and IPv6 interfaces. 1398 * There is a separate ill_t representing IPv4 and IPv6 which has a 1399 * backpointer to the phyint structure for acessing common state. 1400 * 1401 * NOTE : It just stores the group name as there is only one name for 1402 * IPv4 and IPv6 i.e it is a underlying link property. Actually 1403 * IPv4 and IPv6 ill are grouped together when their phyints have 1404 * the same name. 1405 */ 1406 typedef struct phyint { 1407 struct ill_s *phyint_illv4; 1408 struct ill_s *phyint_illv6; 1409 uint_t phyint_ifindex; /* SIOCLSLIFINDEX */ 1410 uint_t phyint_notify_delay; /* SIOCSLIFNOTIFYDELAY */ 1411 char *phyint_groupname; /* SIOCSLIFGROUPNAME */ 1412 uint_t phyint_groupname_len; 1413 uint64_t phyint_flags; 1414 avl_node_t phyint_avl_by_index; /* avl tree by index */ 1415 avl_node_t phyint_avl_by_name; /* avl tree by name */ 1416 kmutex_t phyint_lock; 1417 struct ipsq_s *phyint_ipsq; /* back pointer to ipsq */ 1418 struct phyint *phyint_ipsq_next; /* phyint list on this ipsq */ 1419 } phyint_t; 1420 1421 #define CACHE_ALIGN_SIZE 64 1422 1423 #define CACHE_ALIGN(align_struct) P2ROUNDUP(sizeof (struct align_struct),\ 1424 CACHE_ALIGN_SIZE) 1425 struct _phyint_list_s_ { 1426 avl_tree_t phyint_list_avl_by_index; /* avl tree by index */ 1427 avl_tree_t phyint_list_avl_by_name; /* avl tree by name */ 1428 }; 1429 1430 typedef union phyint_list_u { 1431 struct _phyint_list_s_ phyint_list_s; 1432 char phyint_list_filler[CACHE_ALIGN(_phyint_list_s_)]; 1433 } phyint_list_t; 1434 1435 #define phyint_list_avl_by_index phyint_list_s.phyint_list_avl_by_index 1436 #define phyint_list_avl_by_name phyint_list_s.phyint_list_avl_by_name 1437 /* 1438 * ILL groups. We group ills, 1439 * 1440 * - if the ills have the same group name. (New way) 1441 * 1442 * ill_group locking notes: 1443 * 1444 * illgrp_lock protects ill_grp_ill_schednext. 1445 * 1446 * ill_g_lock protects ill_grp_next, illgrp_ill, illgrp_ill_count. 1447 * Holding ill_g_lock freezes the memberships of ills in IPMP groups. 1448 * It also freezes the global list of ills and all ipifs in all ills. 1449 * 1450 * To remove an ipif from the linked list of ipifs of that ill ipif_free_tail 1451 * holds both ill_g_lock, and ill_lock. Similarly to remove an ill from the 1452 * global list of ills, ill_delete_glist holds ill_g_lock as writer. 1453 * This simplifies things for ipif_select_source, illgrp_scheduler etc. 1454 * that need to walk the members of an illgrp. They just hold ill_g_lock 1455 * as reader to do the walk. 1456 * 1457 */ 1458 typedef struct ill_group { 1459 kmutex_t illgrp_lock; 1460 struct ill_group *illgrp_next; /* Next ill_group */ 1461 struct ill_s *illgrp_ill_schednext; /* Next ill to be scheduled */ 1462 struct ill_s *illgrp_ill; /* First ill in the group */ 1463 int illgrp_ill_count; 1464 } ill_group_t; 1465 1466 extern ill_group_t *illgrp_head_v6; 1467 1468 /* 1469 * Fragmentation hash bucket 1470 */ 1471 typedef struct ipfb_s { 1472 struct ipf_s *ipfb_ipf; /* List of ... */ 1473 size_t ipfb_count; /* Count of bytes used by frag(s) */ 1474 kmutex_t ipfb_lock; /* Protect all ipf in list */ 1475 uint_t ipfb_frag_pkts; /* num of distinct fragmented pkts */ 1476 } ipfb_t; 1477 1478 /* 1479 * IRE bucket structure. Usually there is an array of such structures, 1480 * each pointing to a linked list of ires. irb_refcnt counts the number 1481 * of walkers of a given hash bucket. Usually the reference count is 1482 * bumped up if the walker wants no IRES to be DELETED while walking the 1483 * list. Bumping up does not PREVENT ADDITION. This allows walking a given 1484 * hash bucket without stumbling up on a free pointer. 1485 */ 1486 typedef struct irb { 1487 struct ire_s *irb_ire; /* First ire in this bucket */ 1488 /* Should be first in this struct */ 1489 krwlock_t irb_lock; /* Protect this bucket */ 1490 uint_t irb_refcnt; /* Protected by irb_lock */ 1491 uchar_t irb_marks; /* CONDEMNED ires in this bucket ? */ 1492 uint_t irb_ire_cnt; /* Num of IRE in this bucket */ 1493 uint_t irb_tmp_ire_cnt; /* Num of temporary IRE */ 1494 } irb_t; 1495 1496 #define IP_V4_G_HEAD 0 1497 #define IP_V6_G_HEAD 1 1498 1499 #define MAX_G_HEADS 2 1500 1501 /* 1502 * unpadded ill_if structure 1503 */ 1504 struct _ill_if_s_ { 1505 union ill_if_u *illif_next; 1506 union ill_if_u *illif_prev; 1507 avl_tree_t illif_avl_by_ppa; /* AVL tree sorted on ppa */ 1508 vmem_t *illif_ppa_arena; /* ppa index space */ 1509 uint16_t illif_mcast_v1; /* hints for */ 1510 uint16_t illif_mcast_v2; /* [igmp|mld]_slowtimo */ 1511 int illif_name_len; /* name length */ 1512 char illif_name[LIFNAMSIZ]; /* name of interface type */ 1513 }; 1514 1515 /* cache aligned ill_if structure */ 1516 typedef union ill_if_u { 1517 struct _ill_if_s_ ill_if_s; 1518 char illif_filler[CACHE_ALIGN(_ill_if_s_)]; 1519 } ill_if_t; 1520 1521 1522 #define illif_next ill_if_s.illif_next 1523 #define illif_prev ill_if_s.illif_prev 1524 #define illif_avl_by_ppa ill_if_s.illif_avl_by_ppa 1525 #define illif_ppa_arena ill_if_s.illif_ppa_arena 1526 #define illif_mcast_v1 ill_if_s.illif_mcast_v1 1527 #define illif_mcast_v2 ill_if_s.illif_mcast_v2 1528 #define illif_name ill_if_s.illif_name 1529 #define illif_name_len ill_if_s.illif_name_len 1530 1531 typedef struct ill_walk_context_s { 1532 int ctx_current_list; /* current list being searched */ 1533 int ctx_last_list; /* last list to search */ 1534 } ill_walk_context_t; 1535 1536 /* 1537 * ill_gheads structure, one for IPV4 and one for IPV6 1538 */ 1539 struct _ill_g_head_s_ { 1540 ill_if_t *ill_g_list_head; 1541 ill_if_t *ill_g_list_tail; 1542 }; 1543 1544 typedef union ill_g_head_u { 1545 struct _ill_g_head_s_ ill_g_head_s; 1546 char ill_g_head_filler[CACHE_ALIGN(_ill_g_head_s_)]; 1547 } ill_g_head_t; 1548 1549 #define ill_g_list_head ill_g_head_s.ill_g_list_head 1550 #define ill_g_list_tail ill_g_head_s.ill_g_list_tail 1551 1552 #pragma align CACHE_ALIGN_SIZE(ill_g_heads) 1553 extern ill_g_head_t ill_g_heads[]; /* ILL List Head */ 1554 1555 1556 #define IP_V4_ILL_G_LIST ill_g_heads[IP_V4_G_HEAD].ill_g_list_head 1557 #define IP_V6_ILL_G_LIST ill_g_heads[IP_V6_G_HEAD].ill_g_list_head 1558 #define IP_VX_ILL_G_LIST(i) ill_g_heads[i].ill_g_list_head 1559 1560 #define ILL_START_WALK_V4(ctx_ptr) ill_first(IP_V4_G_HEAD, IP_V4_G_HEAD, \ 1561 ctx_ptr) 1562 #define ILL_START_WALK_V6(ctx_ptr) ill_first(IP_V6_G_HEAD, IP_V6_G_HEAD, \ 1563 ctx_ptr) 1564 #define ILL_START_WALK_ALL(ctx_ptr) ill_first(MAX_G_HEADS, MAX_G_HEADS, \ 1565 ctx_ptr) 1566 1567 /* 1568 * Capabilities, possible flags for ill_capabilities. 1569 */ 1570 1571 #define ILL_CAPAB_AH 0x01 /* IPsec AH acceleration */ 1572 #define ILL_CAPAB_ESP 0x02 /* IPsec ESP acceleration */ 1573 #define ILL_CAPAB_MDT 0x04 /* Multidata Transmit */ 1574 #define ILL_CAPAB_HCKSUM 0x08 /* Hardware checksumming */ 1575 #define ILL_CAPAB_ZEROCOPY 0x10 /* Zero-copy */ 1576 #define ILL_CAPAB_POLL 0x20 /* Polling Toggle */ 1577 1578 /* 1579 * Per-ill Multidata Transmit capabilities. 1580 */ 1581 typedef struct ill_mdt_capab_s ill_mdt_capab_t; 1582 1583 /* 1584 * Per-ill IPsec capabilities. 1585 */ 1586 typedef struct ill_ipsec_capab_s ill_ipsec_capab_t; 1587 1588 /* 1589 * Per-ill Hardware Checksumming capbilities. 1590 */ 1591 typedef struct ill_hcksum_capab_s ill_hcksum_capab_t; 1592 1593 /* 1594 * Per-ill Zero-copy capabilities. 1595 */ 1596 typedef struct ill_zerocopy_capab_s ill_zerocopy_capab_t; 1597 1598 /* 1599 * Per-ill Polling capbilities. 1600 */ 1601 typedef struct ill_poll_capab_s ill_poll_capab_t; 1602 1603 /* 1604 * Per-ill polling resource map. 1605 */ 1606 typedef struct ill_rx_ring ill_rx_ring_t; 1607 1608 /* The following are ill_state_flags */ 1609 #define ILL_LL_SUBNET_PENDING 0x01 /* Waiting for DL_INFO_ACK from drv */ 1610 #define ILL_CONDEMNED 0x02 /* No more new ref's to the ILL */ 1611 #define ILL_CHANGING 0x04 /* ILL not globally visible */ 1612 #define ILL_DL_UNBIND_DONE 0x08 /* UNBIND_REQ has been Acked */ 1613 1614 /* Is this an ILL whose source address is used by other ILL's ? */ 1615 #define IS_USESRC_ILL(ill) \ 1616 (((ill)->ill_usesrc_ifindex == 0) && \ 1617 ((ill)->ill_usesrc_grp_next != NULL)) \ 1618 1619 /* Is this a client/consumer of the usesrc ILL ? */ 1620 #define IS_USESRC_CLI_ILL(ill) \ 1621 (((ill)->ill_usesrc_ifindex != 0) && \ 1622 ((ill)->ill_usesrc_grp_next != NULL)) \ 1623 1624 /* Is this an virtual network interface (vni) ILL ? */ 1625 #define IS_VNI(ill) \ 1626 (((ill) != NULL) && !((ill)->ill_phyint->phyint_flags & \ 1627 PHYI_LOOPBACK) && ((ill)->ill_phyint->phyint_flags & \ 1628 PHYI_VIRTUAL)) \ 1629 1630 /* 1631 * IP Lower level Structure. 1632 * Instance data structure in ip_open when there is a device below us. 1633 */ 1634 typedef struct ill_s { 1635 ill_if_t *ill_ifptr; /* pointer to interface type */ 1636 queue_t *ill_rq; /* Read queue. */ 1637 queue_t *ill_wq; /* Write queue. */ 1638 1639 int ill_error; /* Error value sent up by device. */ 1640 1641 ipif_t *ill_ipif; /* Interface chain for this ILL. */ 1642 1643 uint_t ill_ipif_up_count; /* Number of IPIFs currently up. */ 1644 uint_t ill_max_frag; /* Max IDU from DLPI. */ 1645 char *ill_name; /* Our name. */ 1646 uint_t ill_name_length; /* Name length, incl. terminator. */ 1647 char *ill_ndd_name; /* Name + ":ip?_forwarding" for NDD. */ 1648 uint_t ill_net_type; /* IRE_IF_RESOLVER/IRE_IF_NORESOLVER. */ 1649 /* 1650 * Physical Point of Attachment num. If DLPI style 1 provider 1651 * then this is derived from the devname. 1652 */ 1653 uint_t ill_ppa; 1654 t_uscalar_t ill_sap; 1655 t_scalar_t ill_sap_length; /* Including sign (for position) */ 1656 uint_t ill_phys_addr_length; /* Excluding the sap. */ 1657 uint_t ill_bcast_addr_length; /* Only set when the DL provider */ 1658 /* supports broadcast. */ 1659 t_uscalar_t ill_mactype; 1660 uint8_t *ill_frag_ptr; /* Reassembly state. */ 1661 timeout_id_t ill_frag_timer_id; /* timeout id for the frag timer */ 1662 ipfb_t *ill_frag_hash_tbl; /* Fragment hash list head. */ 1663 ipif_t *ill_pending_ipif; /* IPIF waiting for DL operation. */ 1664 1665 ilm_t *ill_ilm; /* Multicast mebership for lower ill */ 1666 uint_t ill_global_timer; /* for IGMPv3/MLDv2 general queries */ 1667 int ill_mcast_type; /* type of router which is querier */ 1668 /* on this interface */ 1669 uint16_t ill_mcast_v1_time; /* # slow timeouts since last v1 qry */ 1670 uint16_t ill_mcast_v2_time; /* # slow timeouts since last v2 qry */ 1671 uint8_t ill_mcast_v1_tset; /* 1 => timer is set; 0 => not set */ 1672 uint8_t ill_mcast_v2_tset; /* 1 => timer is set; 0 => not set */ 1673 1674 uint8_t ill_mcast_rv; /* IGMPv3/MLDv2 robustness variable */ 1675 int ill_mcast_qi; /* IGMPv3/MLDv2 query interval var */ 1676 1677 mblk_t *ill_pending_mp; /* IOCTL/DLPI awaiting completion. */ 1678 /* 1679 * All non-NULL cells between 'ill_first_mp_to_free' and 1680 * 'ill_last_mp_to_free' are freed in ill_delete. 1681 */ 1682 #define ill_first_mp_to_free ill_bcast_mp 1683 mblk_t *ill_bcast_mp; /* DLPI header for broadcasts. */ 1684 mblk_t *ill_resolver_mp; /* Resolver template. */ 1685 mblk_t *ill_detach_mp; /* detach mp, or NULL if style1 */ 1686 mblk_t *ill_unbind_mp; /* unbind mp from ill_dl_up() */ 1687 mblk_t *ill_dlpi_deferred; /* b_next chain of control messages */ 1688 mblk_t *ill_phys_addr_mp; /* mblk which holds ill_phys_addr */ 1689 #define ill_last_mp_to_free ill_phys_addr_mp 1690 1691 cred_t *ill_credp; /* opener's credentials */ 1692 uint8_t *ill_phys_addr; /* ill_phys_addr_mp->b_rptr + off */ 1693 1694 uint_t ill_state_flags; /* see ILL_* flags above */ 1695 1696 /* Following bit fields protected by ipsq_t */ 1697 uint_t 1698 ill_needs_attach : 1, 1699 ill_reserved : 1, 1700 ill_isv6 : 1, 1701 ill_dlpi_style_set : 1, 1702 1703 ill_ifname_pending : 1, 1704 ill_move_in_progress : 1, /* FAILOVER/FAILBACK in progress */ 1705 ill_join_allmulti : 1, 1706 ill_logical_down : 1, 1707 1708 ill_is_6to4tun : 1, /* Interface is a 6to4 tunnel */ 1709 ill_promisc_on_phys : 1, /* phys interface in promisc mode */ 1710 ill_dl_up : 1, 1711 ill_up_ipifs : 1, 1712 1713 ill_pad_to_bit_31 : 20; 1714 1715 /* Following bit fields protected by ill_lock */ 1716 uint_t 1717 ill_fragtimer_executing : 1, 1718 ill_fragtimer_needrestart : 1, 1719 ill_ilm_cleanup_reqd : 1, 1720 ill_arp_closing : 1, 1721 1722 ill_arp_bringup_pending : 1, 1723 ill_mtu_userspecified : 1, /* SIOCSLNKINFO has set the mtu */ 1724 ill_pad_bit_31 : 26; 1725 1726 /* 1727 * Used in SIOCSIFMUXID and SIOCGIFMUXID for 'ifconfig unplumb'. 1728 */ 1729 int ill_arp_muxid; /* muxid returned from plink for arp */ 1730 int ill_ip_muxid; /* muxid returned from plink for ip */ 1731 1732 /* 1733 * Used for IP frag reassembly throttling on a per ILL basis. 1734 * 1735 * Note: frag_count is approximate, its added to and subtracted from 1736 * without any locking, so simultaneous load/modify/stores can 1737 * collide, also ill_frag_purge() recalculates its value by 1738 * summing all the ipfb_count's without locking out updates 1739 * to the ipfb's. 1740 */ 1741 uint_t ill_ipf_gen; /* Generation of next fragment queue */ 1742 uint_t ill_frag_count; /* Approx count of all mblk bytes */ 1743 uint_t ill_frag_free_num_pkts; /* num of fragmented packets to free */ 1744 clock_t ill_last_frag_clean_time; /* time when frag's were pruned */ 1745 int ill_type; /* From <net/if_types.h> */ 1746 uint_t ill_dlpi_multicast_state; /* See below IDMS_* */ 1747 uint_t ill_dlpi_fastpath_state; /* See below IDMS_* */ 1748 1749 /* 1750 * Capabilities related fields. 1751 */ 1752 uint_t ill_capab_state; /* State of capability query, IDMS_* */ 1753 uint64_t ill_capabilities; /* Enabled capabilities, ILL_CAPAB_* */ 1754 ill_mdt_capab_t *ill_mdt_capab; /* Multidata Transmit capabilities */ 1755 ill_ipsec_capab_t *ill_ipsec_capab_ah; /* IPsec AH capabilities */ 1756 ill_ipsec_capab_t *ill_ipsec_capab_esp; /* IPsec ESP capabilities */ 1757 ill_hcksum_capab_t *ill_hcksum_capab; /* H/W cksumming capabilities */ 1758 ill_zerocopy_capab_t *ill_zerocopy_capab; /* Zero-copy capabilities */ 1759 ill_poll_capab_t *ill_poll_capab; /* Polling capabilities */ 1760 1761 /* 1762 * New fields for IPv6 1763 */ 1764 uint8_t ill_max_hops; /* Maximum hops for any logical interface */ 1765 uint_t ill_max_mtu; /* Maximum MTU for any logical interface */ 1766 uint32_t ill_reachable_time; /* Value for ND algorithm in msec */ 1767 uint32_t ill_reachable_retrans_time; /* Value for ND algorithm msec */ 1768 uint_t ill_max_buf; /* Max # of req to buffer for ND */ 1769 in6_addr_t ill_token; 1770 uint_t ill_token_length; 1771 uint32_t ill_xmit_count; /* ndp max multicast xmits */ 1772 mib2_ipv6IfStatsEntry_t *ill_ip6_mib; /* Per interface mib */ 1773 mib2_ipv6IfIcmpEntry_t *ill_icmp6_mib; /* Per interface mib */ 1774 /* 1775 * Following two mblks are allocated common to all 1776 * the ipifs when the first interface is coming up. 1777 * It is sent up to arp when the last ipif is coming 1778 * down. 1779 */ 1780 mblk_t *ill_arp_down_mp; 1781 mblk_t *ill_arp_del_mapping_mp; 1782 /* 1783 * Used for implementing IFF_NOARP. As IFF_NOARP is used 1784 * to turn off for all the logicals, it is here instead 1785 * of the ipif. 1786 */ 1787 mblk_t *ill_arp_on_mp; 1788 /* Peer ill of an IPMP move operation */ 1789 struct ill_s *ill_move_peer; 1790 1791 phyint_t *ill_phyint; 1792 uint64_t ill_flags; 1793 ill_group_t *ill_group; 1794 struct ill_s *ill_group_next; 1795 /* 1796 * Reverse tunnel related count. This count 1797 * determines how many mobile nodes are using this 1798 * ill to send packet to reverse tunnel via foreign 1799 * agent. A non-zero count specifies presence of 1800 * mobile node(s) using reverse tunnel through this 1801 * interface. 1802 */ 1803 uint32_t ill_mrtun_refcnt; 1804 1805 /* 1806 * This count is bumped up when a route is added with 1807 * RTA_SRCIFP bit flag using routing socket. 1808 */ 1809 uint32_t ill_srcif_refcnt; 1810 /* 1811 * Pointer to the special interface based routing table. 1812 * This routing table is created dynamically when RTA_SRCIFP 1813 * is set by the routing socket. 1814 */ 1815 irb_t *ill_srcif_table; 1816 kmutex_t ill_lock; /* Please see table below */ 1817 /* 1818 * The ill_nd_lla* fields handle the link layer address option 1819 * from neighbor discovery. This is used for external IPv6 1820 * address resolution. 1821 */ 1822 mblk_t *ill_nd_lla_mp; /* mblk which holds ill_nd_lla */ 1823 uint8_t *ill_nd_lla; /* Link Layer Address */ 1824 uint_t ill_nd_lla_len; /* Link Layer Address length */ 1825 /* 1826 * We now have 3 phys_addr_req's sent down. This field keeps track 1827 * of which one is pending. 1828 */ 1829 t_uscalar_t ill_phys_addr_pend; /* which dl_phys_addr_req pending */ 1830 /* 1831 * Used to save errors that occur during plumbing 1832 */ 1833 uint_t ill_ifname_pending_err; 1834 avl_node_t ill_avl_byppa; /* avl node based on ppa */ 1835 void *ill_fastpath_list; /* both ire and nce hang off this */ 1836 uint_t ill_refcnt; /* active refcnt by threads */ 1837 uint_t ill_ire_cnt; /* ires associated with this ill */ 1838 kcondvar_t ill_cv; 1839 uint_t ill_ilm_walker_cnt; /* snmp ilm walkers */ 1840 uint_t ill_nce_cnt; /* nces associated with this ill */ 1841 uint_t ill_waiters; /* threads waiting in ipsq_enter */ 1842 /* 1843 * Contains the upper read queue pointer of the module immediately 1844 * beneath IP. This field allows IP to validate sub-capability 1845 * acknowledgments coming up from downstream. 1846 */ 1847 queue_t *ill_lmod_rq; /* read queue pointer of module below */ 1848 uint_t ill_lmod_cnt; /* number of modules beneath IP */ 1849 ip_m_t *ill_media; /* media specific params/functions */ 1850 t_uscalar_t ill_dlpi_pending; /* Last DLPI primitive issued */ 1851 uint_t ill_usesrc_ifindex; /* use src addr from this ILL */ 1852 struct ill_s *ill_usesrc_grp_next; /* Next ILL in the usesrc group */ 1853 #ifdef ILL_DEBUG 1854 th_trace_t *ill_trace[IP_TR_HASH_MAX]; 1855 boolean_t ill_trace_disable; /* True when alloc fails */ 1856 #endif 1857 } ill_t; 1858 1859 extern void ill_delete_glist(ill_t *); 1860 1861 /* 1862 * The following table lists the protection levels of the various members 1863 * of the ill_t. Same notation as that used for ipif_t above is used. 1864 * 1865 * Write Read 1866 * 1867 * ill_ifptr ill_g_lock + s Write once 1868 * ill_rq ipsq Write once 1869 * ill_wq ipsq Write once 1870 * 1871 * ill_error ipsq None 1872 * ill_ipif ill_g_lock + ipsq ill_g_lock OR ipsq 1873 * ill_ipif_up_count ill_lock + ipsq ill_lock 1874 * ill_max_frag ipsq Write once 1875 * 1876 * ill_name ill_g_lock + ipsq Write once 1877 * ill_name_length ill_g_lock + ipsq Write once 1878 * ill_ndd_name ipsq Write once 1879 * ill_net_type ipsq Write once 1880 * ill_ppa ill_g_lock + ipsq Write once 1881 * ill_sap ipsq + down ill Write once 1882 * ill_sap_length ipsq + down ill Write once 1883 * ill_phys_addr_length ipsq + down ill Write once 1884 * 1885 * ill_bcast_addr_length ipsq ipsq 1886 * ill_mactype ipsq ipsq 1887 * ill_frag_ptr ipsq ipsq 1888 * 1889 * ill_frag_timer_id ill_lock ill_lock 1890 * ill_frag_hash_tbl ipsq up ill 1891 * ill_ilm ipsq + ill_lock ill_lock 1892 * ill_mcast_type ill_lock ill_lock 1893 * ill_mcast_v1_time ill_lock ill_lock 1894 * ill_mcast_v2_time ill_lock ill_lock 1895 * ill_mcast_v1_tset ill_lock ill_lock 1896 * ill_mcast_v2_tset ill_lock ill_lock 1897 * ill_mcast_rv ill_lock ill_lock 1898 * ill_mcast_qi ill_lock ill_lock 1899 * ill_pending_mp ill_lock ill_lock 1900 * 1901 * ill_bcast_mp ipsq ipsq 1902 * ill_resolver_mp ipsq only when ill is up 1903 * ill_down_mp ipsq ipsq 1904 * ill_dlpi_deferred ipsq ipsq 1905 * ill_phys_addr_mp ipsq ipsq 1906 * ill_phys_addr ipsq up ill 1907 * ill_ick ipsq + down ill only when ill is up 1908 * 1909 * ill_state_flags ill_lock ill_lock 1910 * exclusive bit flags ipsq_t ipsq_t 1911 * shared bit flags ill_lock ill_lock 1912 * 1913 * ill_arp_muxid ipsq Not atomic 1914 * ill_ip_muxid ipsq Not atomic 1915 * 1916 * ill_ipf_gen Not atomic 1917 * ill_frag_count Approx. not protected 1918 * ill_type ipsq + down ill only when ill is up 1919 * ill_dlpi_multicast_state ill_lock ill_lock 1920 * ill_dlpi_fastpath_state ill_lock ill_lock 1921 * ill_max_hops ipsq Not atomic 1922 * 1923 * ill_max_mtu 1924 * 1925 * ill_reachable_time ipsq + ill_lock ill_lock 1926 * ill_reachable_retrans_time ipsq + ill_lock ill_lock 1927 * ill_max_buf ipsq + ill_lock ill_lock 1928 * 1929 * Next 2 fields need ill_lock because of the get ioctls. They should not 1930 * report partially updated results without executing in the ipsq. 1931 * ill_token ipsq + ill_lock ill_lock 1932 * ill_token_length ipsq + ill_lock ill_lock 1933 * ill_xmit_count ipsq + down ill write once 1934 * ill_ip6_mib ipsq + down ill only when ill is up 1935 * ill_icmp6_mib ipsq + down ill only when ill is up 1936 * ill_arp_down_mp ipsq ipsq 1937 * ill_arp_del_mapping_mp ipsq ipsq 1938 * ill_arp_on_mp ipsq ipsq 1939 * ill_move_peer ipsq ipsq 1940 * 1941 * ill_phyint ipsq, ill_g_lock, ill_lock Any of them 1942 * ill_flags ill_lock ill_lock 1943 * ill_group ipsq, ill_g_lock, ill_lock Any of them 1944 * ill_group_next ipsq, ill_g_lock, ill_lock Any of them 1945 * ill_mrtun_refcnt ill_lock ill_lock 1946 * ill_srcif_refcnt ill_lock ill_lock 1947 * ill_srcif_table ill_lock ill_lock 1948 * ill_nd_lla_mp ill_lock ill_lock 1949 * ill_nd_lla ill_lock ill_lock 1950 * ill_nd_lla_len ill_lock ill_lock 1951 * ill_phys_addr_pend ipsq + down ill only when ill is up 1952 * ill_ifname_pending_err ipsq ipsq 1953 * ill_avl_byppa ipsq, ill_g_lock Write once 1954 * 1955 * ill_fastpath_list ill_lock ill_lock 1956 * ill_refcnt ill_lock ill_lock 1957 * ill_ire_cnt ill_lock ill_lock 1958 * ill_cv ill_lock ill_lock 1959 * ill_ilm_walker_cnt ill_lock ill_lock 1960 * ill_nce_cnt ill_lock ill_lock 1961 * ill_trace ill_lock ill_lock 1962 * ill_usesrc_grp_next ill_g_usesrc_lock ill_g_usesrc_lock 1963 */ 1964 1965 /* 1966 * For ioctl restart mechanism see ip_reprocess_ioctl() 1967 */ 1968 struct ip_ioctl_cmd_s; 1969 1970 typedef int (*ifunc_t)(ipif_t *, struct sockaddr_in *, queue_t *, mblk_t *, 1971 struct ip_ioctl_cmd_s *, void *); 1972 1973 typedef struct ip_ioctl_cmd_s { 1974 int ipi_cmd; 1975 size_t ipi_copyin_size; 1976 uint_t ipi_flags; 1977 uint_t ipi_cmd_type; 1978 ifunc_t ipi_func; 1979 ifunc_t ipi_func_restart; 1980 } ip_ioctl_cmd_t; 1981 1982 /* 1983 * ipi_cmd_type: 1984 * 1985 * IF_CMD 1 old style ifreq cmd 1986 * LIF_CMD 2 new style lifreq cmd 1987 * MISC_CMD 3 Misc. (non [l]ifreq, tun) cmds 1988 * TUN_CMD 4 tunnel related 1989 */ 1990 1991 enum { IF_CMD = 1, LIF_CMD, MISC_CMD, TUN_CMD }; 1992 1993 #define IPI_DONTCARE 0 /* For ioctl encoded values that don't matter */ 1994 1995 /* Flag values in ipi_flags */ 1996 #define IPI_PRIV 0x1 /* Root only command */ 1997 #define IPI_MODOK 0x2 /* Permitted on mod instance of IP */ 1998 #define IPI_WR 0x4 /* Need to grab writer access */ 1999 #define IPI_GET_CMD 0x8 /* branch to mi_copyout on success */ 2000 #define IPI_REPL 0x10 /* valid for replacement ipif created in MOVE */ 2001 #define IPI_NULL_BCONT 0x20 /* ioctl has not data and hence no b_cont */ 2002 #define IPI_PASS_DOWN 0x40 /* pass this ioctl down when a module only */ 2003 2004 extern ip_ioctl_cmd_t ip_ndx_ioctl_table[]; 2005 extern ip_ioctl_cmd_t ip_misc_ioctl_table[]; 2006 extern int ip_ndx_ioctl_count; 2007 extern int ip_misc_ioctl_count; 2008 2009 #define ILL_CLEAR_MOVE(ill) { \ 2010 ill_t *peer_ill; \ 2011 \ 2012 peer_ill = (ill)->ill_move_peer; \ 2013 ASSERT(peer_ill != NULL); \ 2014 (ill)->ill_move_in_progress = B_FALSE; \ 2015 peer_ill->ill_move_in_progress = B_FALSE; \ 2016 (ill)->ill_move_peer = NULL; \ 2017 peer_ill->ill_move_peer = NULL; \ 2018 } 2019 2020 /* Passed down by ARP to IP during I_PLINK/I_PUNLINK */ 2021 typedef struct ipmx_s { 2022 char ipmx_name[LIFNAMSIZ]; /* if name */ 2023 uint_t 2024 ipmx_arpdev_stream : 1, /* This is the arp stream */ 2025 ipmx_notused : 31; 2026 } ipmx_t; 2027 2028 /* 2029 * State for detecting if a driver supports certain features. 2030 * Support for DL_ENABMULTI_REQ uses ill_dlpi_multicast_state. 2031 * Support for DLPI M_DATA fastpath uses ill_dlpi_fastpath_state. 2032 */ 2033 #define IDMS_UNKNOWN 0 /* No DL_ENABMULTI_REQ sent */ 2034 #define IDMS_INPROGRESS 1 /* Sent DL_ENABMULTI_REQ */ 2035 #define IDMS_OK 2 /* DL_ENABMULTI_REQ ok */ 2036 #define IDMS_FAILED 3 /* DL_ENABMULTI_REQ failed */ 2037 #define IDMS_RENEG 4 /* Driver asked for a renegotiation */ 2038 2039 /* Named Dispatch Parameter Management Structure */ 2040 typedef struct ipparam_s { 2041 uint_t ip_param_min; 2042 uint_t ip_param_max; 2043 uint_t ip_param_value; 2044 char *ip_param_name; 2045 } ipparam_t; 2046 2047 /* Extended NDP Management Structure */ 2048 typedef struct ipndp_s { 2049 ndgetf_t ip_ndp_getf; 2050 ndsetf_t ip_ndp_setf; 2051 caddr_t ip_ndp_data; 2052 char *ip_ndp_name; 2053 } ipndp_t; 2054 2055 /* 2056 * Following are the macros to increment/decrement the reference 2057 * count of the IREs and IRBs (ire bucket). 2058 * 2059 * 1) We bump up the reference count of an IRE to make sure that 2060 * it does not get deleted and freed while we are using it. 2061 * Typically all the lookup functions hold the bucket lock, 2062 * and look for the IRE. If it finds an IRE, it bumps up the 2063 * reference count before dropping the lock. Sometimes we *may* want 2064 * to bump up the reference count after we *looked* up i.e without 2065 * holding the bucket lock. So, the IRE_REFHOLD macro does not assert 2066 * on the bucket lock being held. Any thread trying to delete from 2067 * the hash bucket can still do so but cannot free the IRE if 2068 * ire_refcnt is not 0. 2069 * 2070 * 2) We bump up the reference count on the bucket where the IRE resides 2071 * (IRB), when we want to prevent the IREs getting deleted from a given 2072 * hash bucket. This makes life easier for ire_walk type functions which 2073 * wants to walk the IRE list, call a function, but needs to drop 2074 * the bucket lock to prevent recursive rw_enters. While the 2075 * lock is dropped, the list could be changed by other threads or 2076 * the same thread could end up deleting the ire or the ire pointed by 2077 * ire_next. IRE_REFHOLDing the ire or ire_next is not sufficient as 2078 * a delete will still remove the ire from the bucket while we have 2079 * dropped the lock and hence the ire_next would be NULL. Thus, we 2080 * need a mechanism to prevent deletions from a given bucket. 2081 * 2082 * To prevent deletions, we bump up the reference count on the 2083 * bucket. If the bucket is held, ire_delete just marks IRE_MARK_CONDEMNED 2084 * both on the ire's ire_marks and the bucket's irb_marks. When the 2085 * reference count on the bucket drops to zero, all the CONDEMNED ires 2086 * are deleted. We don't have to bump up the reference count on the 2087 * bucket if we are walking the bucket and never have to drop the bucket 2088 * lock. Note that IRB_REFHOLD does not prevent addition of new ires 2089 * in the list. It is okay because addition of new ires will not cause 2090 * ire_next to point to freed memory. We do IRB_REFHOLD only when 2091 * all of the 3 conditions are true : 2092 * 2093 * 1) The code needs to walk the IRE bucket from start to end. 2094 * 2) It may have to drop the bucket lock sometimes while doing (1) 2095 * 3) It does not want any ires to be deleted meanwhile. 2096 */ 2097 2098 /* 2099 * Bump up the reference count on the IRE. We cannot assert that the 2100 * bucket lock is being held as it is legal to bump up the reference 2101 * count after the first lookup has returned the IRE without 2102 * holding the lock. Currently ip_wput does this for caching IRE_CACHEs. 2103 */ 2104 2105 #ifndef IRE_DEBUG 2106 2107 #define IRE_REFHOLD_NOTR(ire) IRE_REFHOLD(ire) 2108 #define IRE_UNTRACE_REF(ire) 2109 #define IRE_TRACE_REF(ire) 2110 2111 #else 2112 2113 #define IRE_REFHOLD_NOTR(ire) { \ 2114 atomic_add_32(&(ire)->ire_refcnt, 1); \ 2115 ASSERT((ire)->ire_refcnt != 0); \ 2116 } 2117 2118 #define IRE_UNTRACE_REF(ire) ire_untrace_ref(ire); 2119 #define IRE_TRACE_REF(ire) ire_trace_ref(ire); 2120 #endif 2121 2122 #define IRE_REFHOLD(ire) { \ 2123 atomic_add_32(&(ire)->ire_refcnt, 1); \ 2124 ASSERT((ire)->ire_refcnt != 0); \ 2125 IRE_TRACE_REF(ire); \ 2126 } 2127 2128 #define IRE_REFHOLD_LOCKED(ire) { \ 2129 IRE_TRACE_REF(ire); \ 2130 (ire)->ire_refcnt++; \ 2131 } 2132 2133 /* 2134 * Decrement the reference count on the IRE. 2135 * In architectures e.g sun4u, where atomic_add_32_nv is just 2136 * a cas, we need to maintain the right memory barrier semantics 2137 * as that of mutex_exit i.e all the loads and stores should complete 2138 * before the cas is executed. membar_exit() does that here. 2139 * 2140 * NOTE : This macro is used only in places where we want performance. 2141 * To avoid bloating the code, we use the function "ire_refrele" 2142 * which essentially calls the macro. 2143 */ 2144 #ifndef IRE_DEBUG 2145 #define IRE_REFRELE(ire) { \ 2146 ASSERT((ire)->ire_refcnt != 0); \ 2147 membar_exit(); \ 2148 if (atomic_add_32_nv(&(ire)->ire_refcnt, -1) == 0) \ 2149 ire_inactive(ire); \ 2150 } 2151 #define IRE_REFRELE_NOTR(ire) IRE_REFRELE(ire) 2152 #else 2153 #define IRE_REFRELE(ire) { \ 2154 if (ire->ire_bucket != NULL) \ 2155 ire_untrace_ref(ire); \ 2156 ASSERT((ire)->ire_refcnt != 0); \ 2157 membar_exit(); \ 2158 if (atomic_add_32_nv(&(ire)->ire_refcnt, -1) == 0) \ 2159 ire_inactive(ire); \ 2160 } 2161 #define IRE_REFRELE_NOTR(ire) { \ 2162 ASSERT((ire)->ire_refcnt != 0); \ 2163 membar_exit(); \ 2164 if (atomic_add_32_nv(&(ire)->ire_refcnt, -1) == 0) \ 2165 ire_inactive(ire); \ 2166 } 2167 #endif 2168 2169 /* 2170 * Bump up the reference count on the hash bucket - IRB to 2171 * prevent ires from being deleted in this bucket. 2172 */ 2173 #define IRB_REFHOLD(irb) { \ 2174 rw_enter(&(irb)->irb_lock, RW_WRITER); \ 2175 (irb)->irb_refcnt++; \ 2176 ASSERT((irb)->irb_refcnt != 0); \ 2177 rw_exit(&(irb)->irb_lock); \ 2178 } 2179 2180 #define IRB_REFRELE(irb) { \ 2181 rw_enter(&(irb)->irb_lock, RW_WRITER); \ 2182 ASSERT((irb)->irb_refcnt != 0); \ 2183 if (--(irb)->irb_refcnt == 0 && \ 2184 ((irb)->irb_marks & IRE_MARK_CONDEMNED)) { \ 2185 ire_t *ire_list; \ 2186 \ 2187 ire_list = ire_unlink(irb); \ 2188 rw_exit(&(irb)->irb_lock); \ 2189 ASSERT(ire_list != NULL); \ 2190 ire_cleanup(ire_list); \ 2191 } else { \ 2192 rw_exit(&(irb)->irb_lock); \ 2193 } \ 2194 } 2195 2196 /* 2197 * Lock the fast path mp for access, since the ire_fp_mp can be deleted 2198 * due a DL_NOTE_FASTPATH_FLUSH in the case of IRE_BROADCAST and IRE_MIPRTUN 2199 */ 2200 2201 #define LOCK_IRE_FP_MP(ire) { \ 2202 if ((ire)->ire_type == IRE_BROADCAST || \ 2203 (ire)->ire_type == IRE_MIPRTUN) \ 2204 mutex_enter(&ire->ire_lock); \ 2205 } 2206 #define UNLOCK_IRE_FP_MP(ire) { \ 2207 if ((ire)->ire_type == IRE_BROADCAST || \ 2208 (ire)->ire_type == IRE_MIPRTUN) \ 2209 mutex_exit(&ire->ire_lock); \ 2210 } 2211 2212 typedef struct ire4 { 2213 ipaddr_t ire4_src_addr; /* Source address to use. */ 2214 ipaddr_t ire4_mask; /* Mask for matching this IRE. */ 2215 ipaddr_t ire4_addr; /* Address this IRE represents. */ 2216 ipaddr_t ire4_gateway_addr; /* Gateway if IRE_CACHE/IRE_OFFSUBNET */ 2217 ipaddr_t ire4_cmask; /* Mask from parent prefix route */ 2218 } ire4_t; 2219 2220 typedef struct ire6 { 2221 in6_addr_t ire6_src_addr; /* Source address to use. */ 2222 in6_addr_t ire6_mask; /* Mask for matching this IRE. */ 2223 in6_addr_t ire6_addr; /* Address this IRE represents. */ 2224 in6_addr_t ire6_gateway_addr; /* Gateway if IRE_CACHE/IRE_OFFSUBNET */ 2225 in6_addr_t ire6_cmask; /* Mask from parent prefix route */ 2226 } ire6_t; 2227 2228 typedef union ire_addr { 2229 ire6_t ire6_u; 2230 ire4_t ire4_u; 2231 } ire_addr_u_t; 2232 2233 /* Internet Routing Entry */ 2234 typedef struct ire_s { 2235 struct ire_s *ire_next; /* The hash chain must be first. */ 2236 struct ire_s **ire_ptpn; /* Pointer to previous next. */ 2237 uint32_t ire_refcnt; /* Number of references */ 2238 mblk_t *ire_mp; /* Non-null if allocated as mblk */ 2239 mblk_t *ire_fp_mp; /* Fast path header */ 2240 queue_t *ire_rfq; /* recv from this queue */ 2241 queue_t *ire_stq; /* send to this queue */ 2242 union { 2243 uint_t *max_fragp; /* Used only during ire creation */ 2244 uint_t max_frag; /* MTU (next hop or path). */ 2245 } imf_u; 2246 #define ire_max_frag imf_u.max_frag 2247 #define ire_max_fragp imf_u.max_fragp 2248 uint32_t ire_frag_flag; /* IPH_DF or zero. */ 2249 uint32_t ire_ident; /* Per IRE IP ident. */ 2250 uint32_t ire_tire_mark; /* Used for reclaim of unused. */ 2251 uchar_t ire_ipversion; /* IPv4/IPv6 version */ 2252 uchar_t ire_marks; /* IRE_MARK_CONDEMNED etc. */ 2253 ushort_t ire_type; /* Type of IRE */ 2254 uint_t ire_ib_pkt_count; /* Inbound packets for ire_addr */ 2255 uint_t ire_ob_pkt_count; /* Outbound packets to ire_addr */ 2256 uint_t ire_ll_hdr_length; /* Non-zero if we do M_DATA prepends */ 2257 time_t ire_create_time; /* Time (in secs) IRE was created. */ 2258 mblk_t *ire_dlureq_mp; /* DL_UNIT_DATA_REQ/RESOLVER mp */ 2259 uint32_t ire_phandle; /* Associate prefix IREs to cache */ 2260 uint32_t ire_ihandle; /* Associate interface IREs to cache */ 2261 ipif_t *ire_ipif; /* the interface that this ire uses */ 2262 uint32_t ire_flags; /* flags related to route (RTF_*) */ 2263 uint_t ire_ipsec_overhead; /* IPSEC overhead */ 2264 struct nce_s *ire_nce; /* Neighbor Cache Entry for IPv6 */ 2265 uint_t ire_masklen; /* # bits in ire_mask{,_v6} */ 2266 ire_addr_u_t ire_u; /* IPv4/IPv6 address info. */ 2267 2268 irb_t *ire_bucket; /* Hash bucket when ire_ptphn is set */ 2269 iulp_t ire_uinfo; /* Upper layer protocol info. */ 2270 /* 2271 * Protects ire_uinfo, ire_max_frag, and ire_frag_flag. 2272 */ 2273 kmutex_t ire_lock; 2274 uint_t ire_ipif_seqid; /* ipif_seqid of ire_ipif */ 2275 /* 2276 * For regular routes in forwarding table and cache table the 2277 * the following entries are NULL/zero. Only reverse tunnel 2278 * table and interface based forwarding table use these fields. 2279 * Routes added with RTA_SRCIFP and RTA_SRC respectively have 2280 * non-zero values for the following fields. 2281 */ 2282 ill_t *ire_in_ill; /* Incoming ill interface */ 2283 ipaddr_t ire_in_src_addr; 2284 /* source ip-addr of incoming packet */ 2285 clock_t ire_last_used_time; /* Last used time */ 2286 struct ire_s *ire_fastpath; /* Pointer to next ire in fastpath */ 2287 zoneid_t ire_zoneid; /* for local address discrimination */ 2288 #ifdef IRE_DEBUG 2289 th_trace_t *ire_trace[IP_TR_HASH_MAX]; 2290 boolean_t ire_trace_disable; /* True when alloc fails */ 2291 #endif 2292 } ire_t; 2293 2294 /* IPv4 compatiblity macros */ 2295 #define ire_src_addr ire_u.ire4_u.ire4_src_addr 2296 #define ire_mask ire_u.ire4_u.ire4_mask 2297 #define ire_addr ire_u.ire4_u.ire4_addr 2298 #define ire_gateway_addr ire_u.ire4_u.ire4_gateway_addr 2299 #define ire_cmask ire_u.ire4_u.ire4_cmask 2300 2301 #define ire_src_addr_v6 ire_u.ire6_u.ire6_src_addr 2302 #define ire_mask_v6 ire_u.ire6_u.ire6_mask 2303 #define ire_addr_v6 ire_u.ire6_u.ire6_addr 2304 #define ire_gateway_addr_v6 ire_u.ire6_u.ire6_gateway_addr 2305 #define ire_cmask_v6 ire_u.ire6_u.ire6_cmask 2306 2307 /* Convenient typedefs for sockaddrs */ 2308 typedef struct sockaddr_in sin_t; 2309 typedef struct sockaddr_in6 sin6_t; 2310 2311 /* Address structure used for internal bind with IP */ 2312 typedef struct ipa_conn_s { 2313 ipaddr_t ac_laddr; 2314 ipaddr_t ac_faddr; 2315 uint16_t ac_fport; 2316 uint16_t ac_lport; 2317 } ipa_conn_t; 2318 2319 typedef struct ipa6_conn_s { 2320 in6_addr_t ac6_laddr; 2321 in6_addr_t ac6_faddr; 2322 uint16_t ac6_fport; 2323 uint16_t ac6_lport; 2324 } ipa6_conn_t; 2325 2326 /* 2327 * Using ipa_conn_x_t or ipa6_conn_x_t allows us to modify the behavior of IP's 2328 * bind handler. 2329 */ 2330 typedef struct ipa_conn_extended_s { 2331 uint64_t acx_flags; 2332 ipa_conn_t acx_conn; 2333 } ipa_conn_x_t; 2334 2335 typedef struct ipa6_conn_extended_s { 2336 uint64_t ac6x_flags; 2337 ipa6_conn_t ac6x_conn; 2338 } ipa6_conn_x_t; 2339 2340 /* flag values for ipa_conn_x_t and ipa6_conn_x_t. */ 2341 #define ACX_VERIFY_DST 0x1ULL /* verify destination address is reachable */ 2342 2343 /* Name/Value Descriptor. */ 2344 typedef struct nv_s { 2345 uint64_t nv_value; 2346 char *nv_name; 2347 } nv_t; 2348 2349 /* IP Forwarding Ticket */ 2350 typedef struct ipftk_s { 2351 queue_t *ipftk_queue; 2352 ipaddr_t ipftk_dst; 2353 } ipftk_t; 2354 2355 typedef struct ipt_s { 2356 pfv_t func; /* Routine to call */ 2357 uchar_t *arg; /* ire or nce passed in */ 2358 } ipt_t; 2359 2360 #define ILL_FRAG_HASH(s, i) \ 2361 ((ntohl(s) ^ ((i) ^ ((i) >> 8))) % ILL_FRAG_HASH_TBL_COUNT) 2362 2363 /* 2364 * The MAX number of allowed fragmented packets per hash bucket 2365 * calculation is based on the most common mtu size of 1500. This limit 2366 * will work well for other mtu sizes as well. 2367 */ 2368 #define COMMON_IP_MTU 1500 2369 #define MAX_FRAG_MIN 10 2370 #define MAX_FRAG_PKTS \ 2371 MAX(MAX_FRAG_MIN, (2 * (ip_reass_queue_bytes / \ 2372 (COMMON_IP_MTU * ILL_FRAG_HASH_TBL_COUNT)))) 2373 2374 /* 2375 * Maximum dups allowed per packet. 2376 */ 2377 extern uint_t ip_max_frag_dups; 2378 2379 /* 2380 * Per-packet information for received packets and transmitted. 2381 * Used by the transport protocols when converting between the packet 2382 * and ancillary data and socket options. 2383 * 2384 * Note: This private data structure and related IPPF_* constant 2385 * definitions are exposed to enable compilation of some debugging tools 2386 * like lsof which use struct tcp_t in <inet/tcp.h>. This is intended to be 2387 * a temporary hack and long term alternate interfaces should be defined 2388 * to support the needs of such tools and private definitions moved to 2389 * private headers. 2390 */ 2391 struct ip6_pkt_s { 2392 uint_t ipp_fields; /* Which fields are valid */ 2393 uint_t ipp_sticky_ignored; /* sticky fields to ignore */ 2394 uint_t ipp_ifindex; /* pktinfo ifindex */ 2395 in6_addr_t ipp_addr; /* pktinfo src/dst addr */ 2396 uint_t ipp_hoplimit; 2397 uint_t ipp_multi_hoplimit; 2398 uint_t ipp_hopoptslen; 2399 uint_t ipp_rtdstoptslen; 2400 uint_t ipp_rthdrlen; 2401 uint_t ipp_dstoptslen; 2402 uint_t ipp_pathmtulen; 2403 ip6_hbh_t *ipp_hopopts; 2404 ip6_dest_t *ipp_rtdstopts; 2405 ip6_rthdr_t *ipp_rthdr; 2406 ip6_dest_t *ipp_dstopts; 2407 struct ip6_mtuinfo *ipp_pathmtu; 2408 in6_addr_t ipp_nexthop; /* Transmit only */ 2409 uint8_t ipp_tclass; 2410 int8_t ipp_use_min_mtu; 2411 }; 2412 typedef struct ip6_pkt_s ip6_pkt_t; 2413 2414 /* 2415 * This structure is used to convey information from IP and the ULP. 2416 * Currently used for the IP_RECVSLLA and IP_RECVIF options. The 2417 * type of information field is set to IN_PKTINFO (i.e inbound pkt info) 2418 */ 2419 typedef struct in_pktinfo { 2420 uint32_t in_pkt_ulp_type; /* type of info sent */ 2421 /* to UDP */ 2422 uint32_t in_pkt_flags; /* what is sent up by IP */ 2423 uint32_t in_pkt_ifindex; /* inbound interface index */ 2424 struct sockaddr_dl in_pkt_slla; /* has source link layer addr */ 2425 } in_pktinfo_t; 2426 2427 /* 2428 * flags to tell UDP what IP is sending 2429 */ 2430 #define IPF_RECVIF 0x01 /* inbound interface index */ 2431 #define IPF_RECVSLLA 0x02 /* source link layer address */ 2432 2433 /* ipp_fields values */ 2434 #define IPPF_IFINDEX 0x0001 /* Part of in6_pktinfo: ifindex */ 2435 #define IPPF_ADDR 0x0002 /* Part of in6_pktinfo: src/dst addr */ 2436 #define IPPF_SCOPE_ID 0x0004 /* Add xmit ip6i_t for sin6_scope_id */ 2437 #define IPPF_NO_CKSUM 0x0008 /* Add xmit ip6i_t for IP6I_NO_*_CKSUM */ 2438 2439 #define IPPF_RAW_CKSUM 0x0010 /* Add xmit ip6i_t for IP6I_RAW_CHECKSUM */ 2440 #define IPPF_HOPLIMIT 0x0020 2441 #define IPPF_HOPOPTS 0x0040 2442 #define IPPF_RTHDR 0x0080 2443 2444 #define IPPF_RTDSTOPTS 0x0100 2445 #define IPPF_DSTOPTS 0x0200 2446 #define IPPF_NEXTHOP 0x0400 2447 #define IPPF_PATHMTU 0x0800 2448 2449 #define IPPF_TCLASS 0x1000 2450 #define IPPF_DONTFRAG 0x2000 2451 #define IPPF_USE_MIN_MTU 0x4000 2452 #define IPPF_MULTI_HOPLIMIT 0x8000 2453 2454 #define IPPF_HAS_IP6I \ 2455 (IPPF_IFINDEX|IPPF_ADDR|IPPF_NEXTHOP|IPPF_SCOPE_ID| \ 2456 IPPF_NO_CKSUM|IPPF_RAW_CKSUM|IPPF_HOPLIMIT|IPPF_DONTFRAG| \ 2457 IPPF_USE_MIN_MTU|IPPF_MULTI_HOPLIMIT) 2458 2459 #define TCP_PORTS_OFFSET 0 2460 #define UDP_PORTS_OFFSET 0 2461 2462 /* 2463 * lookups return the ill/ipif only if the flags are clear OR Iam writer. 2464 * ill / ipif lookup functions increment the refcnt on the ill / ipif only 2465 * after calling these macros. This ensures that the refcnt on the ipif or 2466 * ill will eventually drop down to zero. 2467 */ 2468 #define ILL_LOOKUP_FAILED 1 /* Used as error code */ 2469 #define IPIF_LOOKUP_FAILED 2 /* Used as error code */ 2470 2471 #define ILL_CAN_LOOKUP(ill) \ 2472 (!((ill)->ill_state_flags & (ILL_CONDEMNED | ILL_CHANGING)) || \ 2473 IAM_WRITER_ILL(ill)) 2474 2475 #define ILL_CAN_WAIT(ill, q) \ 2476 (((q) != NULL) && !((ill)->ill_state_flags & (ILL_CONDEMNED))) 2477 2478 #define ILL_CAN_LOOKUP_WALKER(ill) \ 2479 (!((ill)->ill_state_flags & ILL_CONDEMNED)) 2480 2481 #define IPIF_CAN_LOOKUP(ipif) \ 2482 (!((ipif)->ipif_state_flags & (IPIF_CONDEMNED | IPIF_CHANGING)) || \ 2483 IAM_WRITER_IPIF(ipif)) 2484 2485 /* 2486 * If the parameter 'q' is NULL, the caller is not interested in wait and 2487 * restart of the operation if the ILL or IPIF cannot be looked up when it is 2488 * marked as 'CHANGING'. Typically a thread that tries to send out data will 2489 * end up passing NULLs as the last 4 parameters to ill_lookup_on_ifindex and 2490 * in this case 'q' is NULL 2491 */ 2492 #define IPIF_CAN_WAIT(ipif, q) \ 2493 (((q) != NULL) && !((ipif)->ipif_state_flags & (IPIF_CONDEMNED))) 2494 2495 #define IPIF_CAN_LOOKUP_WALKER(ipif) \ 2496 (!((ipif)->ipif_state_flags & (IPIF_CONDEMNED)) || \ 2497 IAM_WRITER_IPIF(ipif)) 2498 2499 /* 2500 * These macros are used by critical set ioctls and failover ioctls to 2501 * mark the ipif appropriately before starting the operation and to clear the 2502 * marks after completing the operation. 2503 */ 2504 #define IPIF_UNMARK_MOVING(ipif) \ 2505 (ipif)->ipif_state_flags &= ~IPIF_MOVING & ~IPIF_CHANGING; 2506 2507 #define ILL_UNMARK_CHANGING(ill) \ 2508 (ill)->ill_state_flags &= ~ILL_CHANGING; 2509 2510 /* Macros used to assert that this thread is a writer */ 2511 #define IAM_WRITER_IPSQ(ipsq) ((ipsq)->ipsq_writer == curthread) 2512 #define IAM_WRITER_ILL(ill) \ 2513 ((ill)->ill_phyint->phyint_ipsq->ipsq_writer == curthread) 2514 #define IAM_WRITER_IPIF(ipif) \ 2515 ((ipif)->ipif_ill->ill_phyint->phyint_ipsq->ipsq_writer == curthread) 2516 2517 /* 2518 * Grab ill locks in the proper order. The order is highest addressed 2519 * ill is locked first. 2520 */ 2521 #define GRAB_ILL_LOCKS(ill_1, ill_2) \ 2522 { \ 2523 if ((ill_1) > (ill_2)) { \ 2524 if (ill_1 != NULL) \ 2525 mutex_enter(&(ill_1)->ill_lock); \ 2526 if (ill_2 != NULL) \ 2527 mutex_enter(&(ill_2)->ill_lock); \ 2528 } else { \ 2529 if (ill_2 != NULL) \ 2530 mutex_enter(&(ill_2)->ill_lock); \ 2531 if (ill_1 != NULL && ill_1 != ill_2) \ 2532 mutex_enter(&(ill_1)->ill_lock); \ 2533 } \ 2534 } 2535 2536 #define RELEASE_ILL_LOCKS(ill_1, ill_2) \ 2537 { \ 2538 if (ill_1 != NULL) \ 2539 mutex_exit(&(ill_1)->ill_lock); \ 2540 if (ill_2 != NULL && ill_2 != ill_1) \ 2541 mutex_exit(&(ill_2)->ill_lock); \ 2542 } 2543 2544 /* Get the other protocol instance ill */ 2545 #define ILL_OTHER(ill) \ 2546 ((ill)->ill_isv6 ? (ill)->ill_phyint->phyint_illv4 : \ 2547 (ill)->ill_phyint->phyint_illv6) 2548 2549 #define MATCH_V4_ONLY 0x1 2550 #define MATCH_V6_ONLY 0x2 2551 #define MATCH_ILL_ONLY 0x4 2552 2553 /* ioctl command info: Ioctl properties extracted and stored in here */ 2554 typedef struct cmd_info_s 2555 { 2556 char ci_groupname[LIFNAMSIZ + 1]; /* SIOCSLIFGROUPNAME */ 2557 ipif_t *ci_ipif; /* ipif associated with [l]ifreq ioctl's */ 2558 sin_t *ci_sin; /* the sin struct passed down */ 2559 sin6_t *ci_sin6; /* the sin6_t struct passed down */ 2560 struct lifreq *ci_lifr; /* the lifreq struct passed down */ 2561 } cmd_info_t; 2562 2563 extern krwlock_t ill_g_lock; 2564 extern kmutex_t ip_addr_avail_lock; 2565 extern ipsq_t *ipsq_g_head; 2566 2567 extern ill_t *ip_timer_ill; /* ILL for IRE expiration timer. */ 2568 extern timeout_id_t ip_ire_expire_id; /* IRE expiration timeout id. */ 2569 extern timeout_id_t ip_ire_reclaim_id; /* IRE recalaim timeout id. */ 2570 2571 extern kmutex_t ip_mi_lock; 2572 extern krwlock_t ip_g_nd_lock; /* For adding/removing nd variables */ 2573 extern kmutex_t ip_trash_timer_lock; /* Protects ip_ire_expire_id */ 2574 2575 extern kmutex_t igmp_timer_lock; /* Protects the igmp timer */ 2576 extern kmutex_t mld_timer_lock; /* Protects the mld timer */ 2577 2578 extern krwlock_t ill_g_usesrc_lock; /* Protects usesrc related fields */ 2579 2580 extern struct kmem_cache *ire_cache; 2581 2582 extern uint_t ip_ire_default_count; /* Number of IPv4 IRE_DEFAULT entries */ 2583 extern uint_t ip_ire_default_index; /* Walking index used to mod in */ 2584 2585 extern ipaddr_t ip_g_all_ones; 2586 extern caddr_t ip_g_nd; /* Named Dispatch List Head */ 2587 2588 extern uint_t ip_loopback_mtu; 2589 2590 extern ipparam_t *ip_param_arr; 2591 2592 extern int ip_g_forward; 2593 extern int ipv6_forward; 2594 2595 #define ip_respond_to_address_mask_broadcast ip_param_arr[0].ip_param_value 2596 #define ip_g_send_redirects ip_param_arr[5].ip_param_value 2597 #define ip_debug ip_param_arr[7].ip_param_value 2598 #define ip_mrtdebug ip_param_arr[8].ip_param_value 2599 #define ip_timer_interval ip_param_arr[9].ip_param_value 2600 #define ip_ire_arp_interval ip_param_arr[10].ip_param_value 2601 #define ip_def_ttl ip_param_arr[12].ip_param_value 2602 #define ip_wroff_extra ip_param_arr[14].ip_param_value 2603 #define ip_path_mtu_discovery ip_param_arr[17].ip_param_value 2604 #define ip_ignore_delete_time ip_param_arr[18].ip_param_value 2605 #define ip_output_queue ip_param_arr[20].ip_param_value 2606 #define ip_broadcast_ttl ip_param_arr[21].ip_param_value 2607 #define ip_icmp_err_interval ip_param_arr[22].ip_param_value 2608 #define ip_icmp_err_burst ip_param_arr[23].ip_param_value 2609 #define ip_reass_queue_bytes ip_param_arr[24].ip_param_value 2610 #define ip_addrs_per_if ip_param_arr[26].ip_param_value 2611 #define ipsec_override_persocket_policy ip_param_arr[27].ip_param_value 2612 #define icmp_accept_clear_messages ip_param_arr[28].ip_param_value 2613 #define delay_first_probe_time ip_param_arr[30].ip_param_value 2614 #define max_unicast_solicit ip_param_arr[31].ip_param_value 2615 #define ipv6_def_hops ip_param_arr[32].ip_param_value 2616 #define ipv6_icmp_return ip_param_arr[33].ip_param_value 2617 #define ipv6_forward_src_routed ip_param_arr[34].ip_param_value 2618 #define ipv6_resp_echo_mcast ip_param_arr[35].ip_param_value 2619 #define ipv6_send_redirects ip_param_arr[36].ip_param_value 2620 #define ipv6_ignore_redirect ip_param_arr[37].ip_param_value 2621 #define ipv6_strict_dst_multihoming ip_param_arr[38].ip_param_value 2622 #define ip_ire_reclaim_fraction ip_param_arr[39].ip_param_value 2623 #define ipsec_policy_log_interval ip_param_arr[40].ip_param_value 2624 #define ip_ndp_unsolicit_interval ip_param_arr[42].ip_param_value 2625 #define ip_ndp_unsolicit_count ip_param_arr[43].ip_param_value 2626 #define ipv6_ignore_home_address_opt ip_param_arr[44].ip_param_value 2627 #define ip_policy_mask ip_param_arr[45].ip_param_value 2628 #define ip_multirt_resolution_interval ip_param_arr[46].ip_param_value 2629 #define ip_multirt_ttl ip_param_arr[47].ip_param_value 2630 #define ip_multidata_outbound ip_param_arr[48].ip_param_value 2631 #ifdef DEBUG 2632 #define ipv6_drop_inbound_icmpv6 ip_param_arr[49].ip_param_value 2633 #else 2634 #define ipv6_drop_inbound_icmpv6 0 2635 #endif 2636 2637 extern hrtime_t ipsec_policy_failure_last; 2638 2639 extern int dohwcksum; /* use h/w cksum if supported by the h/w */ 2640 #ifdef ZC_TEST 2641 extern int noswcksum; 2642 #endif 2643 2644 extern char ipif_loopback_name[]; 2645 2646 extern nv_t *ire_nv_tbl; 2647 2648 extern time_t ip_g_frag_timeout; 2649 extern clock_t ip_g_frag_timo_ms; 2650 2651 extern mib2_ip_t ip_mib; /* For tcpInErrs and udpNoPorts */ 2652 2653 extern struct module_info ip_mod_info; 2654 2655 extern timeout_id_t igmp_slowtimeout_id; 2656 extern timeout_id_t mld_slowtimeout_id; 2657 2658 extern uint_t loopback_packets; 2659 2660 /* 2661 * Network byte order macros 2662 */ 2663 #ifdef _BIG_ENDIAN 2664 #define N_IN_CLASSD_NET IN_CLASSD_NET 2665 #define N_INADDR_UNSPEC_GROUP INADDR_UNSPEC_GROUP 2666 #else /* _BIG_ENDIAN */ 2667 #define N_IN_CLASSD_NET (ipaddr_t)0x000000f0U 2668 #define N_INADDR_UNSPEC_GROUP (ipaddr_t)0x000000e0U 2669 #endif /* _BIG_ENDIAN */ 2670 #define CLASSD(addr) (((addr) & N_IN_CLASSD_NET) == N_INADDR_UNSPEC_GROUP) 2671 2672 #ifdef DEBUG 2673 /* IPsec HW acceleration debugging support */ 2674 2675 #define IPSECHW_CAPAB 0x0001 /* capability negotiation */ 2676 #define IPSECHW_SADB 0x0002 /* SADB exchange */ 2677 #define IPSECHW_PKT 0x0004 /* general packet flow */ 2678 #define IPSECHW_PKTIN 0x0008 /* driver in pkt processing details */ 2679 #define IPSECHW_PKTOUT 0x0010 /* driver out pkt processing details */ 2680 2681 #define IPSECHW_DEBUG(f, x) if (ipsechw_debug & (f)) { (void) printf x; } 2682 #define IPSECHW_CALL(f, r, x) if (ipsechw_debug & (f)) { (void) r x; } 2683 2684 extern uint32_t ipsechw_debug; 2685 #else 2686 #define IPSECHW_DEBUG(f, x) {} 2687 #define IPSECHW_CALL(f, r, x) {} 2688 #endif 2689 2690 #ifdef IP_DEBUG 2691 #include <sys/debug.h> 2692 #include <sys/promif.h> 2693 2694 #define ip0dbg(a) printf a 2695 #define ip1dbg(a) if (ip_debug > 2) printf a 2696 #define ip2dbg(a) if (ip_debug > 3) printf a 2697 #define ip3dbg(a) if (ip_debug > 4) printf a 2698 2699 #define ipcsumdbg(a, b) \ 2700 if (ip_debug == 1) \ 2701 prom_printf(a); \ 2702 else if (ip_debug > 1) \ 2703 { prom_printf("%smp=%p\n", a, (void *)b); } 2704 #else 2705 #define ip0dbg(a) /* */ 2706 #define ip1dbg(a) /* */ 2707 #define ip2dbg(a) /* */ 2708 #define ip3dbg(a) /* */ 2709 #define ipcsumdbg(a, b) /* */ 2710 #endif /* IP_DEBUG */ 2711 2712 extern const char *dlpi_prim_str(int); 2713 extern const char *dlpi_err_str(int); 2714 extern void ill_frag_timer(void *); 2715 extern ill_t *ill_first(int, int, ill_walk_context_t *); 2716 extern ill_t *ill_next(ill_walk_context_t *, ill_t *); 2717 extern void ill_frag_timer_start(ill_t *); 2718 extern void ip_ioctl_freemsg(mblk_t *); 2719 extern mblk_t *ip_carve_mp(mblk_t **, ssize_t); 2720 extern mblk_t *ip_dlpi_alloc(size_t, t_uscalar_t); 2721 extern char *ip_dot_addr(ipaddr_t, char *); 2722 extern void ip_lwput(queue_t *, mblk_t *); 2723 extern boolean_t icmp_err_rate_limit(void); 2724 extern void icmp_time_exceeded(queue_t *, mblk_t *, uint8_t); 2725 extern void icmp_unreachable(queue_t *, mblk_t *, uint8_t); 2726 extern mblk_t *ip_add_info(mblk_t *, ill_t *, uint_t); 2727 extern mblk_t *ip_bind_v4(queue_t *, mblk_t *, conn_t *); 2728 extern int ip_bind_connected(conn_t *, mblk_t *, ipaddr_t *, uint16_t, 2729 ipaddr_t, uint16_t, boolean_t, boolean_t, boolean_t, 2730 boolean_t); 2731 extern boolean_t ip_bind_ipsec_policy_set(conn_t *, mblk_t *); 2732 extern int ip_bind_laddr(conn_t *, mblk_t *, ipaddr_t, uint16_t, 2733 boolean_t, boolean_t, boolean_t); 2734 extern uint_t ip_cksum(mblk_t *, int, uint32_t); 2735 extern int ip_close(queue_t *, int); 2736 extern uint16_t ip_csum_hdr(ipha_t *); 2737 extern void ip_proto_not_sup(queue_t *, mblk_t *, uint_t, zoneid_t); 2738 extern void ip_ire_fini(void); 2739 extern void ip_ire_init(void); 2740 extern int ip_open(queue_t *, dev_t *, int, int, cred_t *); 2741 extern int ip_reassemble(mblk_t *, ipf_t *, uint_t, boolean_t, ill_t *, 2742 size_t); 2743 extern int ip_opt_set_ill(conn_t *, int, boolean_t, boolean_t, 2744 int, int, mblk_t *); 2745 extern void ip_rput(queue_t *, mblk_t *); 2746 extern void ip_input(ill_t *, ill_rx_ring_t *, mblk_t *, size_t); 2747 extern void ip_rput_dlpi(queue_t *, mblk_t *); 2748 extern void ip_rput_forward(ire_t *, ipha_t *, mblk_t *, ill_t *); 2749 extern void ip_rput_forward_multicast(ipaddr_t, mblk_t *, ipif_t *); 2750 extern void ip_udp_input(queue_t *, mblk_t *, ipha_t *, ire_t *, ill_t *); 2751 extern void ip_proto_input(queue_t *, mblk_t *, ipha_t *, ire_t *, ill_t *); 2752 extern void ip_rput_other(ipsq_t *, queue_t *, mblk_t *, void *); 2753 extern void ip_setqinfo(queue_t *, minor_t, boolean_t); 2754 extern void ip_trash_ire_reclaim(void *); 2755 extern void ip_trash_timer_expire(void *); 2756 extern void ip_wput(queue_t *, mblk_t *); 2757 extern void ip_output(void *, mblk_t *, void *, int); 2758 extern void ip_wput_md(queue_t *, mblk_t *, conn_t *); 2759 2760 extern void ip_wput_ire(queue_t *, mblk_t *, ire_t *, conn_t *, int); 2761 extern void ip_wput_local(queue_t *, ill_t *, ipha_t *, mblk_t *, ire_t *, 2762 int, zoneid_t); 2763 extern void ip_wput_multicast(queue_t *, mblk_t *, ipif_t *); 2764 extern void ip_wput_nondata(ipsq_t *, queue_t *, mblk_t *, void *); 2765 extern void ip_wsrv(queue_t *); 2766 extern char *ip_nv_lookup(nv_t *, int); 2767 extern boolean_t ip_local_addr_ok_v6(const in6_addr_t *, const in6_addr_t *); 2768 extern boolean_t ip_remote_addr_ok_v6(const in6_addr_t *, const in6_addr_t *); 2769 extern ipaddr_t ip_massage_options(ipha_t *); 2770 extern ipaddr_t ip_net_mask(ipaddr_t); 2771 extern void ip_newroute(queue_t *, mblk_t *, ipaddr_t, ill_t *, conn_t *); 2772 2773 extern struct qinit rinit_ipv6; 2774 extern struct qinit winit_ipv6; 2775 extern struct qinit rinit_tcp; 2776 extern struct qinit rinit_tcp6; 2777 extern struct qinit winit_tcp; 2778 extern struct qinit rinit_acceptor_tcp; 2779 extern struct qinit winit_acceptor_tcp; 2780 2781 extern void conn_drain_insert(conn_t *connp); 2782 extern int conn_ipsec_length(conn_t *connp); 2783 extern void ip_wput_ipsec_out(queue_t *, mblk_t *, ipha_t *, ill_t *, 2784 ire_t *); 2785 extern ipaddr_t ip_get_dst(ipha_t *); 2786 extern int ipsec_out_extra_length(mblk_t *); 2787 extern int ipsec_in_extra_length(mblk_t *); 2788 extern mblk_t *ipsec_in_alloc(); 2789 extern boolean_t ipsec_in_is_secure(mblk_t *); 2790 extern void ipsec_out_process(queue_t *, mblk_t *, ire_t *, uint_t); 2791 extern void ipsec_out_to_in(mblk_t *); 2792 extern int ill_forward_set(queue_t *, mblk_t *, boolean_t, caddr_t); 2793 extern void ip_fanout_proto_again(mblk_t *, ill_t *, ill_t *, ire_t *); 2794 2795 extern void ire_cleanup(ire_t *); 2796 extern void ire_inactive(ire_t *); 2797 extern ire_t *ire_unlink(irb_t *); 2798 #ifdef IRE_DEBUG 2799 extern void ire_trace_ref(ire_t *ire); 2800 extern void ire_untrace_ref(ire_t *ire); 2801 extern void ire_thread_exit(ire_t *ire, caddr_t); 2802 #endif 2803 #ifdef ILL_DEBUG 2804 extern void ill_trace_cleanup(ill_t *); 2805 extern void ipif_trace_cleanup(ipif_t *); 2806 #endif 2807 2808 extern int ip_srcid_insert(const in6_addr_t *, zoneid_t); 2809 extern int ip_srcid_remove(const in6_addr_t *, zoneid_t); 2810 extern void ip_srcid_find_id(uint_t, in6_addr_t *, zoneid_t); 2811 extern uint_t ip_srcid_find_addr(const in6_addr_t *, zoneid_t); 2812 extern int ip_srcid_report(queue_t *, mblk_t *, caddr_t, cred_t *); 2813 2814 extern uint8_t ipoptp_next(ipoptp_t *); 2815 extern uint8_t ipoptp_first(ipoptp_t *, ipha_t *); 2816 extern ill_t *ip_grab_attach_ill(ill_t *, mblk_t *, int, boolean_t); 2817 extern ire_t *conn_set_outgoing_ill(conn_t *, ire_t *, ill_t **); 2818 extern int ipsec_req_from_conn(conn_t *, ipsec_req_t *, int); 2819 extern int ip_snmp_get(queue_t *q, mblk_t *mctl); 2820 extern int ip_snmp_set(queue_t *q, int, int, uchar_t *, int); 2821 extern void ip_process_ioctl(ipsq_t *, queue_t *, mblk_t *, void *); 2822 extern void ip_reprocess_ioctl(ipsq_t *, queue_t *, mblk_t *, void *); 2823 extern void ip_restart_optmgmt(ipsq_t *, queue_t *, mblk_t *, void *); 2824 extern void ip_ioctl_finish(queue_t *, mblk_t *, int, int, ipif_t *, 2825 ipsq_t *); 2826 2827 extern boolean_t ipsq_pending_mp_cleanup(ill_t *, conn_t *); 2828 extern void conn_ioctl_cleanup(conn_t *); 2829 extern ill_t *conn_get_held_ill(conn_t *, ill_t **, int *); 2830 2831 struct multidata_s; 2832 struct pdesc_s; 2833 2834 extern mblk_t *ip_mdinfo_alloc(ill_mdt_capab_t *); 2835 extern mblk_t *ip_mdinfo_return(ire_t *, conn_t *, char *, ill_mdt_capab_t *); 2836 extern uint_t ip_md_cksum(struct pdesc_s *, int, uint_t); 2837 extern boolean_t ip_md_addr_attr(struct multidata_s *, struct pdesc_s *, 2838 const mblk_t *); 2839 extern boolean_t ip_md_hcksum_attr(struct multidata_s *, struct pdesc_s *, 2840 uint32_t, uint32_t, uint32_t, uint32_t); 2841 extern boolean_t ip_md_zcopy_attr(struct multidata_s *, struct pdesc_s *, 2842 uint_t); 2843 2844 /* Hooks for CGTP (multirt routes) filtering module */ 2845 #define CGTP_FILTER_REV_1 1 2846 #define CGTP_FILTER_REV_2 2 2847 #define CGTP_FILTER_REV CGTP_FILTER_REV_2 2848 2849 /* cfo_filter, cfo_filter_fp, cfo_filter_v6 hooks return values */ 2850 #define CGTP_IP_PKT_NOT_CGTP 0 2851 #define CGTP_IP_PKT_PREMIUM 1 2852 #define CGTP_IP_PKT_DUPLICATE 2 2853 2854 typedef struct cgtp_filter_ops { 2855 int cfo_filter_rev; 2856 int (*cfo_change_state)(int); 2857 int (*cfo_add_dest_v4)(ipaddr_t, ipaddr_t, ipaddr_t, ipaddr_t); 2858 int (*cfo_del_dest_v4)(ipaddr_t, ipaddr_t); 2859 int (*cfo_add_dest_v6)(in6_addr_t *, in6_addr_t *, in6_addr_t *, 2860 in6_addr_t *); 2861 int (*cfo_del_dest_v6)(in6_addr_t *, in6_addr_t *); 2862 int (*cfo_filter)(queue_t *, mblk_t *); 2863 int (*cfo_filter_fp)(queue_t *, mblk_t *); 2864 int (*cfo_filter_v6)(queue_t *, ip6_t *, ip6_frag_t *); 2865 } cgtp_filter_ops_t; 2866 2867 #define CGTP_MCAST_SUCCESS 1 2868 2869 extern cgtp_filter_ops_t *ip_cgtp_filter_ops; 2870 extern boolean_t ip_cgtp_filter; 2871 2872 extern int ip_cgtp_filter_supported(void); 2873 extern int ip_cgtp_filter_register(cgtp_filter_ops_t *); 2874 2875 /* Flags for ire_multirt_lookup() */ 2876 2877 #define MULTIRT_USESTAMP 0x0001 2878 #define MULTIRT_SETSTAMP 0x0002 2879 #define MULTIRT_CACHEGW 0x0004 2880 2881 /* Debug stuff for multirt route resolution. */ 2882 #if defined(DEBUG) && !defined(__lint) 2883 /* Our "don't send, rather drop" flag. */ 2884 #define MULTIRT_DEBUG_FLAG 0x8000 2885 2886 #define MULTIRT_TRACE(x) ip2dbg(x) 2887 2888 #define MULTIRT_DEBUG_TAG(mblk) \ 2889 do { \ 2890 ASSERT(mblk != NULL); \ 2891 MULTIRT_TRACE(("%s[%d]: tagging mblk %p, tag was %d\n", \ 2892 __FILE__, __LINE__, \ 2893 (void *)(mblk), (mblk)->b_flag & MULTIRT_DEBUG_FLAG)); \ 2894 (mblk)->b_flag |= MULTIRT_DEBUG_FLAG; \ 2895 } while (0) 2896 2897 #define MULTIRT_DEBUG_UNTAG(mblk) \ 2898 do { \ 2899 ASSERT(mblk != NULL); \ 2900 MULTIRT_TRACE(("%s[%d]: untagging mblk %p, tag was %d\n", \ 2901 __FILE__, __LINE__, \ 2902 (void *)(mblk), (mblk)->b_flag & MULTIRT_DEBUG_FLAG)); \ 2903 (mblk)->b_flag &= ~MULTIRT_DEBUG_FLAG; \ 2904 } while (0) 2905 2906 #define MULTIRT_DEBUG_TAGGED(mblk) \ 2907 (((mblk)->b_flag & MULTIRT_DEBUG_FLAG) ? B_TRUE : B_FALSE) 2908 #else 2909 #define MULTIRT_DEBUG_TAG(mblk) ASSERT(mblk != NULL) 2910 #define MULTIRT_DEBUG_UNTAG(mblk) ASSERT(mblk != NULL) 2911 #define MULTIRT_DEBUG_TAGGED(mblk) B_FALSE 2912 #endif 2913 2914 /* 2915 * Per-ILL Multidata Transmit capabilities. 2916 */ 2917 struct ill_mdt_capab_s { 2918 uint_t ill_mdt_version; /* interface version */ 2919 uint_t ill_mdt_on; /* on/off switch for MDT on this ILL */ 2920 uint_t ill_mdt_hdr_head; /* leading header fragment extra space */ 2921 uint_t ill_mdt_hdr_tail; /* trailing header fragment extra space */ 2922 uint_t ill_mdt_max_pld; /* maximum payload buffers per Multidata */ 2923 uint_t ill_mdt_span_limit; /* maximum payload span per packet */ 2924 }; 2925 2926 /* 2927 * ioctl identifier and structure for Multidata Transmit update 2928 * private M_CTL communication from IP to ULP. 2929 */ 2930 #define MDT_IOC_INFO_UPDATE (('M' << 8) + 1020) 2931 2932 typedef struct ip_mdt_info_s { 2933 uint_t mdt_info_id; /* MDT_IOC_INFO_UPDATE */ 2934 ill_mdt_capab_t mdt_capab; /* ILL MDT capabilities */ 2935 } ip_mdt_info_t; 2936 2937 struct ill_hcksum_capab_s { 2938 uint_t ill_hcksum_version; /* interface version */ 2939 uint_t ill_hcksum_txflags; /* capabilities on transmit */ 2940 }; 2941 2942 struct ill_zerocopy_capab_s { 2943 uint_t ill_zerocopy_version; /* interface version */ 2944 uint_t ill_zerocopy_flags; /* capabilities */ 2945 }; 2946 2947 /* Possible ill_states */ 2948 #define ILL_RING_INPROC 3 /* Being assigned to squeue */ 2949 #define ILL_RING_INUSE 2 /* Already Assigned to Rx Ring */ 2950 #define ILL_RING_BEING_FREED 1 /* Being Unassigned */ 2951 #define ILL_RING_FREE 0 /* Available to be assigned to Ring */ 2952 2953 #define ILL_MAX_RINGS 256 /* Max num of rx rings we can manage */ 2954 #define ILL_POLLING 0x01 /* Polling in use */ 2955 2956 /* 2957 * these two functions pointer types are exported by the mac layer. 2958 * we need to duplicate the definitions here because we cannot 2959 * include mac.h in this file. 2960 */ 2961 typedef void (*ip_mac_blank_t)(void *, time_t, uint_t); 2962 typedef void (*ip_mac_tx_t)(void *, mblk_t *); 2963 2964 struct ill_rx_ring { 2965 ip_mac_blank_t rr_blank; /* Driver interrupt blanking func */ 2966 void *rr_handle; /* Handle for Rx ring */ 2967 squeue_t *rr_sqp; /* Squeue the ring is bound to */ 2968 ill_t *rr_ill; /* back pointer to ill */ 2969 clock_t rr_poll_time; /* Last lbolt polling was used */ 2970 uint32_t rr_poll_state; /* polling state flags */ 2971 uint32_t rr_max_blank_time; /* Max interrupt blank */ 2972 uint32_t rr_min_blank_time; /* Min interrupt blank */ 2973 uint32_t rr_max_pkt_cnt; /* Max pkts before interrupt */ 2974 uint32_t rr_min_pkt_cnt; /* Mix pkts before interrupt */ 2975 uint32_t rr_normal_blank_time; /* Normal intr freq */ 2976 uint32_t rr_normal_pkt_cnt; /* Normal intr pkt cnt */ 2977 uint32_t rr_ring_state; /* State of this ring */ 2978 }; 2979 2980 struct ill_poll_capab_s { 2981 ip_mac_tx_t ill_tx; /* Driver Tx routine */ 2982 void *ill_tx_handle; /* Driver Tx handle */ 2983 ill_rx_ring_t *ill_ring_tbl; /* Ring to Sqp mapping table */ 2984 conn_t *ill_unbind_conn; /* Conn used during unplumb */ 2985 }; 2986 2987 /* 2988 * Macro that determines whether or not a given ILL is allowed for MDT. 2989 */ 2990 #define ILL_MDT_USABLE(ill) \ 2991 ((ill->ill_capabilities & ILL_CAPAB_MDT) != 0 && \ 2992 ill->ill_mdt_capab != NULL && \ 2993 ill->ill_mdt_capab->ill_mdt_version == MDT_VERSION_2 && \ 2994 ill->ill_mdt_capab->ill_mdt_on != 0) 2995 2996 /* 2997 * Macro that determines whether or not a given CONN may be considered 2998 * for fast path prior to proceeding further with Multidata. 2999 */ 3000 #define CONN_IS_MD_FASTPATH(connp) \ 3001 ((connp)->conn_dontroute == 0 && /* SO_DONTROUTE */ \ 3002 (connp)->conn_nofailover_ill == NULL && /* IPIF_NOFAILOVER */ \ 3003 (connp)->conn_xmit_if_ill == NULL && /* IP_XMIT_IF */ \ 3004 (connp)->conn_outgoing_pill == NULL && /* IP{V6}_BOUND_PIF */ \ 3005 (connp)->conn_outgoing_ill == NULL) /* IP{V6}_BOUND_IF */ 3006 3007 /* 3008 * Macro that determines whether or not a given IPC requires 3009 * outbound IPSEC processing. 3010 */ 3011 #define CONN_IPSEC_OUT_ENCAPSULATED(connp) \ 3012 ((connp)->conn_out_enforce_policy || \ 3013 ((connp)->conn_latch != NULL && \ 3014 (connp)->conn_latch->ipl_out_policy != NULL)) 3015 3016 /* 3017 * IP squeues exports 3018 */ 3019 extern int ip_squeue_profile; 3020 extern int ip_squeue_bind; 3021 extern boolean_t ip_squeue_fanout; 3022 3023 typedef struct squeue_set_s { 3024 kmutex_t sqs_lock; 3025 struct squeue_s **sqs_list; 3026 int sqs_size; 3027 int sqs_max_size; 3028 processorid_t sqs_bind; 3029 } squeue_set_t; 3030 3031 #define IP_SQUEUE_GET(hint) \ 3032 (!ip_squeue_fanout ? \ 3033 (CPU->cpu_squeue_set->sqs_list[hint % \ 3034 CPU->cpu_squeue_set->sqs_size]) : \ 3035 ip_squeue_random(hint)) 3036 3037 typedef void (*squeue_func_t)(squeue_t *, mblk_t *, sqproc_t, void *, uint8_t); 3038 3039 extern void ip_squeue_init(void (*)(squeue_t *)); 3040 extern squeue_t *ip_squeue_random(uint_t); 3041 extern squeue_t *ip_squeue_get(ill_rx_ring_t *); 3042 extern void ip_squeue_get_pkts(squeue_t *); 3043 extern int ip_squeue_bind_set(queue_t *, mblk_t *, char *, caddr_t, cred_t *); 3044 extern int ip_squeue_bind_get(queue_t *, mblk_t *, caddr_t, cred_t *); 3045 extern void ip_squeue_clean(void *, mblk_t *, void *); 3046 3047 extern void ip_resume_tcp_bind(void *, mblk_t *mp, void *); 3048 extern int ip_fill_mtuinfo(struct in6_addr *, in_port_t, 3049 struct ip6_mtuinfo *); 3050 3051 typedef void (*ipsq_func_t)(ipsq_t *, queue_t *, mblk_t *, void *); 3052 3053 /* 3054 * Squeue tags. Tags only need to be unique when the callback function is the 3055 * same to distinguish between different calls, but we use unique tags for 3056 * convenience anyway. 3057 */ 3058 #define SQTAG_IP_INPUT 1 3059 #define SQTAG_TCP_INPUT_ICMP_ERR 2 3060 #define SQTAG_TCP6_INPUT_ICMP_ERR 3 3061 #define SQTAG_IP_TCP_INPUT 4 3062 #define SQTAG_IP6_TCP_INPUT 5 3063 #define SQTAG_IP_TCP_CLOSE 6 3064 #define SQTAG_TCP_OUTPUT 7 3065 #define SQTAG_TCP_TIMER 8 3066 #define SQTAG_TCP_TIMEWAIT 9 3067 #define SQTAG_TCP_ACCEPT_FINISH 10 3068 #define SQTAG_TCP_ACCEPT_FINISH_Q0 11 3069 #define SQTAG_TCP_ACCEPT_PENDING 12 3070 #define SQTAG_TCP_LISTEN_DISCON 13 3071 #define SQTAG_TCP_CONN_REQ 14 3072 #define SQTAG_TCP_EAGER_BLOWOFF 15 3073 #define SQTAG_TCP_EAGER_CLEANUP 16 3074 #define SQTAG_TCP_EAGER_CLEANUP_Q0 17 3075 #define SQTAG_TCP_CONN_IND 18 3076 #define SQTAG_TCP_RSRV 19 3077 #define SQTAG_TCP_ABORT_BUCKET 20 3078 #define SQTAG_TCP_REINPUT 21 3079 #define SQTAG_TCP_REINPUT_EAGER 22 3080 #define SQTAG_TCP_INPUT_MCTL 23 3081 #define SQTAG_TCP_RPUTOTHER 24 3082 #define SQTAG_IP_PROTO_AGAIN 25 3083 #define SQTAG_IP_FANOUT_TCP 26 3084 #define SQTAG_IPSQ_CLEAN_RING 27 3085 #define SQTAG_TCP_WPUT_OTHER 28 3086 #define SQTAG_TCP_CONN_REQ_UNBOUND 29 3087 #define SQTAG_TCP_SEND_PENDING 30 3088 3089 #endif /* _KERNEL */ 3090 3091 #ifdef __cplusplus 3092 } 3093 #endif 3094 3095 #endif /* _INET_IP_H */ 3096