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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 1990 Mentat Inc.
24 * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
25 * Copyright 2017 Nexenta Systems, Inc.
26 * Copyright 2017 OmniTI Computer Consulting, Inc. All rights reserved.
27 * Copyright 2019, Joyent, Inc.
28 */
29
30 #ifndef _INET_IP_H
31 #define _INET_IP_H
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 <net/if_dl.h>
43 #include <net/if.h>
44 #include <netinet/ip.h>
45 #include <netinet/igmp.h>
46 #include <sys/neti.h>
47 #include <sys/hook.h>
48 #include <sys/hook_event.h>
49 #include <sys/hook_impl.h>
50 #include <inet/ip_stack.h>
51
52 #ifdef _KERNEL
53 #include <netinet/ip6.h>
54 #include <sys/avl.h>
55 #include <sys/list.h>
56 #include <sys/vmem.h>
57 #include <sys/squeue.h>
58 #include <net/route.h>
59 #include <sys/systm.h>
60 #include <net/radix.h>
61 #include <sys/modhash.h>
62
63 #ifdef DEBUG
64 #define CONN_DEBUG
65 #endif
66
67 #define IP_DEBUG
68 /*
69 * The mt-streams(9F) flags for the IP module; put here so that other
70 * "drivers" that are actually IP (e.g., ICMP, UDP) can use the same set
71 * of flags.
72 */
73 #define IP_DEVMTFLAGS D_MP
74 #endif /* _KERNEL */
75
76 #define IP_MOD_NAME "ip"
77 #define IP_DEV_NAME "/dev/ip"
78 #define IP6_DEV_NAME "/dev/ip6"
79
80 #define UDP_MOD_NAME "udp"
81 #define UDP_DEV_NAME "/dev/udp"
82 #define UDP6_DEV_NAME "/dev/udp6"
83
84 #define TCP_MOD_NAME "tcp"
85 #define TCP_DEV_NAME "/dev/tcp"
86 #define TCP6_DEV_NAME "/dev/tcp6"
87
88 #define SCTP_MOD_NAME "sctp"
89
90 #ifndef _IPADDR_T
91 #define _IPADDR_T
92 typedef uint32_t ipaddr_t;
93 #endif
94
95 /* Number of bits in an address */
96 #define IP_ABITS 32
97 #define IPV4_ABITS IP_ABITS
98 #define IPV6_ABITS 128
99 #define IP_MAX_HW_LEN 40
100
101 #define IP_HOST_MASK (ipaddr_t)0xffffffffU
102
103 #define IP_CSUM(mp, off, sum) (~ip_cksum(mp, off, sum) & 0xFFFF)
104 #define IP_CSUM_PARTIAL(mp, off, sum) ip_cksum(mp, off, sum)
105 #define IP_BCSUM_PARTIAL(bp, len, sum) bcksum(bp, len, sum)
106
107 #define ILL_FRAG_HASH_TBL_COUNT ((unsigned int)64)
108 #define ILL_FRAG_HASH_TBL_SIZE (ILL_FRAG_HASH_TBL_COUNT * sizeof (ipfb_t))
109
110 #define IPV4_ADDR_LEN 4
111 #define IP_ADDR_LEN IPV4_ADDR_LEN
112 #define IP_ARP_PROTO_TYPE 0x0800
113
114 #define IPV4_VERSION 4
115 #define IP_VERSION IPV4_VERSION
116 #define IP_SIMPLE_HDR_LENGTH_IN_WORDS 5
117 #define IP_SIMPLE_HDR_LENGTH 20
118 #define IP_MAX_HDR_LENGTH 60
119
120 #define IP_MAX_OPT_LENGTH (IP_MAX_HDR_LENGTH-IP_SIMPLE_HDR_LENGTH)
121
122 #define IP_MIN_MTU (IP_MAX_HDR_LENGTH + 8) /* 68 bytes */
123
124 /*
125 * XXX IP_MAXPACKET is defined in <netinet/ip.h> as well. At some point the
126 * 2 files should be cleaned up to remove all redundant definitions.
127 */
128 #define IP_MAXPACKET 65535
129 #define IP_SIMPLE_HDR_VERSION \
130 ((IP_VERSION << 4) | IP_SIMPLE_HDR_LENGTH_IN_WORDS)
131
132 #define UDPH_SIZE 8
133
134 /*
135 * Constants and type definitions to support IP IOCTL commands
136 */
137 #define IP_IOCTL (('i'<<8)|'p')
138 #define IP_IOC_IRE_DELETE 4
139 #define IP_IOC_IRE_DELETE_NO_REPLY 5
140 #define IP_IOC_RTS_REQUEST 7
141
142 /* Common definitions used by IP IOCTL data structures */
143 typedef struct ipllcmd_s {
144 uint_t ipllc_cmd;
145 uint_t ipllc_name_offset;
146 uint_t ipllc_name_length;
147 } ipllc_t;
148
149 /* IP IRE Delete Command Structure. */
150 typedef struct ipid_s {
151 ipllc_t ipid_ipllc;
152 uint_t ipid_ire_type;
153 uint_t ipid_addr_offset;
154 uint_t ipid_addr_length;
155 uint_t ipid_mask_offset;
156 uint_t ipid_mask_length;
157 } ipid_t;
158
159 #define ipid_cmd ipid_ipllc.ipllc_cmd
160
161 #ifdef _KERNEL
162 /*
163 * Temporary state for ip options parser.
164 */
165 typedef struct ipoptp_s
166 {
167 uint8_t *ipoptp_next; /* next option to look at */
168 uint8_t *ipoptp_end; /* end of options */
169 uint8_t *ipoptp_cur; /* start of current option */
170 uint8_t ipoptp_len; /* length of current option */
171 uint32_t ipoptp_flags;
172 } ipoptp_t;
173
174 /*
175 * Flag(s) for ipoptp_flags
176 */
177 #define IPOPTP_ERROR 0x00000001
178 #endif /* _KERNEL */
179
180 /* Controls forwarding of IP packets, set via ipadm(1M)/ndd(1M) */
181 #define IP_FORWARD_NEVER 0
182 #define IP_FORWARD_ALWAYS 1
183
184 #define WE_ARE_FORWARDING(ipst) ((ipst)->ips_ip_forwarding == IP_FORWARD_ALWAYS)
185
186 #define IPH_HDR_LENGTH(ipha) \
187 ((int)(((ipha_t *)ipha)->ipha_version_and_hdr_length & 0xF) << 2)
188
189 #define IPH_HDR_VERSION(ipha) \
190 ((int)(((ipha_t *)ipha)->ipha_version_and_hdr_length) >> 4)
191
192 #ifdef _KERNEL
193 /*
194 * IP reassembly macros. We hide starting and ending offsets in b_next and
195 * b_prev of messages on the reassembly queue. The messages are chained using
196 * b_cont. These macros are used in ip_reassemble() so we don't have to see
197 * the ugly casts and assignments.
198 * Note that the offsets are <= 64k i.e. a uint_t is sufficient to represent
199 * them.
200 */
201 #define IP_REASS_START(mp) ((uint_t)(uintptr_t)((mp)->b_next))
202 #define IP_REASS_SET_START(mp, u) \
203 ((mp)->b_next = (mblk_t *)(uintptr_t)(u))
204 #define IP_REASS_END(mp) ((uint_t)(uintptr_t)((mp)->b_prev))
205 #define IP_REASS_SET_END(mp, u) \
206 ((mp)->b_prev = (mblk_t *)(uintptr_t)(u))
207
208 #define IP_REASS_COMPLETE 0x1
209 #define IP_REASS_PARTIAL 0x2
210 #define IP_REASS_FAILED 0x4
211
212 /*
213 * Test to determine whether this is a module instance of IP or a
214 * driver instance of IP.
215 */
216 #define CONN_Q(q) (WR(q)->q_next == NULL)
217
218 #define Q_TO_CONN(q) ((conn_t *)(q)->q_ptr)
219 #define Q_TO_TCP(q) (Q_TO_CONN((q))->conn_tcp)
220 #define Q_TO_UDP(q) (Q_TO_CONN((q))->conn_udp)
221 #define Q_TO_ICMP(q) (Q_TO_CONN((q))->conn_icmp)
222 #define Q_TO_RTS(q) (Q_TO_CONN((q))->conn_rts)
223
224 #define CONNP_TO_WQ(connp) ((connp)->conn_wq)
225 #define CONNP_TO_RQ(connp) ((connp)->conn_rq)
226
227 #define GRAB_CONN_LOCK(q) { \
228 if (q != NULL && CONN_Q(q)) \
229 mutex_enter(&(Q_TO_CONN(q))->conn_lock); \
230 }
231
232 #define RELEASE_CONN_LOCK(q) { \
233 if (q != NULL && CONN_Q(q)) \
234 mutex_exit(&(Q_TO_CONN(q))->conn_lock); \
235 }
236
237 /*
238 * Ref counter macros for ioctls. This provides a guard for TCP to stop
239 * tcp_close from removing the rq/wq whilst an ioctl is still in flight on the
240 * stream. The ioctl could have been queued on e.g. an ipsq. tcp_close will wait
241 * until the ioctlref count is zero before proceeding.
242 * Ideally conn_oper_pending_ill would be used for this purpose. However, in the
243 * case where an ioctl is aborted or interrupted, it can be cleared prematurely.
244 * There are also some race possibilities between ip and the stream head which
245 * can also end up with conn_oper_pending_ill being cleared prematurely. So, to
246 * avoid these situations, we use a dedicated ref counter for ioctls which is
247 * used in addition to and in parallel with the normal conn_ref count.
248 */
249 #define CONN_INC_IOCTLREF_LOCKED(connp) { \
250 ASSERT(MUTEX_HELD(&(connp)->conn_lock)); \
251 DTRACE_PROBE1(conn__inc__ioctlref, conn_t *, (connp)); \
252 (connp)->conn_ioctlref++; \
253 mutex_exit(&(connp)->conn_lock); \
254 }
255
256 #define CONN_INC_IOCTLREF(connp) { \
257 mutex_enter(&(connp)->conn_lock); \
258 CONN_INC_IOCTLREF_LOCKED(connp); \
259 }
260
261 #define CONN_DEC_IOCTLREF(connp) { \
262 mutex_enter(&(connp)->conn_lock); \
263 DTRACE_PROBE1(conn__dec__ioctlref, conn_t *, (connp)); \
264 /* Make sure conn_ioctlref will not underflow. */ \
265 ASSERT((connp)->conn_ioctlref != 0); \
266 if ((--(connp)->conn_ioctlref == 0) && \
267 ((connp)->conn_state_flags & CONN_CLOSING)) { \
268 cv_broadcast(&(connp)->conn_cv); \
269 } \
270 mutex_exit(&(connp)->conn_lock); \
271 }
272
273
274 /*
275 * Complete the pending operation. Usually an ioctl. Can also
276 * be a bind or option management request that got enqueued
277 * in an ipsq_t. Called on completion of the operation.
278 */
279 #define CONN_OPER_PENDING_DONE(connp) { \
280 mutex_enter(&(connp)->conn_lock); \
281 (connp)->conn_oper_pending_ill = NULL; \
282 cv_broadcast(&(connp)->conn_refcv); \
283 mutex_exit(&(connp)->conn_lock); \
284 CONN_DEC_REF(connp); \
285 }
286
287 /*
288 * Values for squeue switch:
289 */
290 #define IP_SQUEUE_ENTER_NODRAIN 1
291 #define IP_SQUEUE_ENTER 2
292 #define IP_SQUEUE_FILL 3
293
294 extern int ip_squeue_flag;
295
296 /* IP Fragmentation Reassembly Header */
297 typedef struct ipf_s {
298 struct ipf_s *ipf_hash_next;
299 struct ipf_s **ipf_ptphn; /* Pointer to previous hash next. */
300 uint32_t ipf_ident; /* Ident to match. */
301 uint8_t ipf_protocol; /* Protocol to match. */
302 uchar_t ipf_last_frag_seen : 1; /* Last fragment seen ? */
303 time_t ipf_timestamp; /* Reassembly start time. */
304 mblk_t *ipf_mp; /* mblk we live in. */
305 mblk_t *ipf_tail_mp; /* Frag queue tail pointer. */
306 int ipf_hole_cnt; /* Number of holes (hard-case). */
307 int ipf_end; /* Tail end offset (0 -> hard-case). */
308 uint_t ipf_gen; /* Frag queue generation */
309 size_t ipf_count; /* Count of bytes used by frag */
310 uint_t ipf_nf_hdr_len; /* Length of nonfragmented header */
311 in6_addr_t ipf_v6src; /* IPv6 source address */
312 in6_addr_t ipf_v6dst; /* IPv6 dest address */
313 uint_t ipf_prev_nexthdr_offset; /* Offset for nexthdr value */
314 uint8_t ipf_ecn; /* ECN info for the fragments */
315 uint8_t ipf_num_dups; /* Number of times dup frags recvd */
316 uint16_t ipf_checksum_flags; /* Hardware checksum flags */
317 uint32_t ipf_checksum; /* Partial checksum of fragment data */
318 } ipf_t;
319
320 /*
321 * IPv4 Fragments
322 */
323 #define IS_V4_FRAGMENT(ipha_fragment_offset_and_flags) \
324 (((ntohs(ipha_fragment_offset_and_flags) & IPH_OFFSET) != 0) || \
325 ((ntohs(ipha_fragment_offset_and_flags) & IPH_MF) != 0))
326
327 #define ipf_src V4_PART_OF_V6(ipf_v6src)
328 #define ipf_dst V4_PART_OF_V6(ipf_v6dst)
329
330 #endif /* _KERNEL */
331
332 /* ICMP types */
333 #define ICMP_ECHO_REPLY 0
334 #define ICMP_DEST_UNREACHABLE 3
335 #define ICMP_SOURCE_QUENCH 4
336 #define ICMP_REDIRECT 5
337 #define ICMP_ECHO_REQUEST 8
338 #define ICMP_ROUTER_ADVERTISEMENT 9
339 #define ICMP_ROUTER_SOLICITATION 10
340 #define ICMP_TIME_EXCEEDED 11
341 #define ICMP_PARAM_PROBLEM 12
342 #define ICMP_TIME_STAMP_REQUEST 13
343 #define ICMP_TIME_STAMP_REPLY 14
344 #define ICMP_INFO_REQUEST 15
345 #define ICMP_INFO_REPLY 16
346 #define ICMP_ADDRESS_MASK_REQUEST 17
347 #define ICMP_ADDRESS_MASK_REPLY 18
348
349 /* Evaluates to true if the ICMP type is an ICMP error */
350 #define ICMP_IS_ERROR(type) ( \
351 (type) == ICMP_DEST_UNREACHABLE || \
352 (type) == ICMP_SOURCE_QUENCH || \
353 (type) == ICMP_TIME_EXCEEDED || \
354 (type) == ICMP_PARAM_PROBLEM)
355
356 /* ICMP_TIME_EXCEEDED codes */
357 #define ICMP_TTL_EXCEEDED 0
358 #define ICMP_REASSEMBLY_TIME_EXCEEDED 1
359
360 /* ICMP_DEST_UNREACHABLE codes */
361 #define ICMP_NET_UNREACHABLE 0
362 #define ICMP_HOST_UNREACHABLE 1
363 #define ICMP_PROTOCOL_UNREACHABLE 2
364 #define ICMP_PORT_UNREACHABLE 3
365 #define ICMP_FRAGMENTATION_NEEDED 4
366 #define ICMP_SOURCE_ROUTE_FAILED 5
367 #define ICMP_DEST_NET_UNKNOWN 6
368 #define ICMP_DEST_HOST_UNKNOWN 7
369 #define ICMP_SRC_HOST_ISOLATED 8
370 #define ICMP_DEST_NET_UNREACH_ADMIN 9
371 #define ICMP_DEST_HOST_UNREACH_ADMIN 10
372 #define ICMP_DEST_NET_UNREACH_TOS 11
373 #define ICMP_DEST_HOST_UNREACH_TOS 12
374
375 /* ICMP Header Structure */
376 typedef struct icmph_s {
377 uint8_t icmph_type;
378 uint8_t icmph_code;
379 uint16_t icmph_checksum;
380 union {
381 struct { /* ECHO request/response structure */
382 uint16_t u_echo_ident;
383 uint16_t u_echo_seqnum;
384 } u_echo;
385 struct { /* Destination unreachable structure */
386 uint16_t u_du_zero;
387 uint16_t u_du_mtu;
388 } u_du;
389 struct { /* Parameter problem structure */
390 uint8_t u_pp_ptr;
391 uint8_t u_pp_rsvd[3];
392 } u_pp;
393 struct { /* Redirect structure */
394 ipaddr_t u_rd_gateway;
395 } u_rd;
396 } icmph_u;
397 } icmph_t;
398
399 #define icmph_echo_ident icmph_u.u_echo.u_echo_ident
400 #define icmph_echo_seqnum icmph_u.u_echo.u_echo_seqnum
401 #define icmph_du_zero icmph_u.u_du.u_du_zero
402 #define icmph_du_mtu icmph_u.u_du.u_du_mtu
403 #define icmph_pp_ptr icmph_u.u_pp.u_pp_ptr
404 #define icmph_rd_gateway icmph_u.u_rd.u_rd_gateway
405
406 #define ICMPH_SIZE 8
407
408 /*
409 * Minimum length of transport layer header included in an ICMP error
410 * message for it to be considered valid.
411 */
412 #define ICMP_MIN_TP_HDR_LEN 8
413
414 /* Aligned IP header */
415 typedef struct ipha_s {
416 uint8_t ipha_version_and_hdr_length;
417 uint8_t ipha_type_of_service;
418 uint16_t ipha_length;
419 uint16_t ipha_ident;
420 uint16_t ipha_fragment_offset_and_flags;
421 uint8_t ipha_ttl;
422 uint8_t ipha_protocol;
423 uint16_t ipha_hdr_checksum;
424 ipaddr_t ipha_src;
425 ipaddr_t ipha_dst;
426 } ipha_t;
427
428 /*
429 * IP Flags
430 *
431 * Some of these constant names are copied for the DTrace IP provider in
432 * usr/src/lib/libdtrace/common/{ip.d.in, ip.sed.in}, which should be kept
433 * in sync.
434 */
435 #define IPH_DF 0x4000 /* Don't fragment */
436 #define IPH_MF 0x2000 /* More fragments to come */
437 #define IPH_OFFSET 0x1FFF /* Where the offset lives */
438
439 /* Byte-order specific values */
440 #ifdef _BIG_ENDIAN
441 #define IPH_DF_HTONS 0x4000 /* Don't fragment */
442 #define IPH_MF_HTONS 0x2000 /* More fragments to come */
443 #define IPH_OFFSET_HTONS 0x1FFF /* Where the offset lives */
444 #else
445 #define IPH_DF_HTONS 0x0040 /* Don't fragment */
446 #define IPH_MF_HTONS 0x0020 /* More fragments to come */
447 #define IPH_OFFSET_HTONS 0xFF1F /* Where the offset lives */
448 #endif
449
450 /* ECN code points for IPv4 TOS byte and IPv6 traffic class octet. */
451 #define IPH_ECN_NECT 0x0 /* Not ECN-Capable Transport */
452 #define IPH_ECN_ECT1 0x1 /* ECN-Capable Transport, ECT(1) */
453 #define IPH_ECN_ECT0 0x2 /* ECN-Capable Transport, ECT(0) */
454 #define IPH_ECN_CE 0x3 /* ECN-Congestion Experienced (CE) */
455
456 struct ill_s;
457
458 typedef void ip_v6intfid_func_t(struct ill_s *, in6_addr_t *);
459 typedef void ip_v6mapinfo_func_t(struct ill_s *, uchar_t *, uchar_t *);
460 typedef void ip_v4mapinfo_func_t(struct ill_s *, uchar_t *, uchar_t *);
461
462 /* IP Mac info structure */
463 typedef struct ip_m_s {
464 t_uscalar_t ip_m_mac_type; /* From <sys/dlpi.h> */
465 int ip_m_type; /* From <net/if_types.h> */
466 t_uscalar_t ip_m_ipv4sap;
467 t_uscalar_t ip_m_ipv6sap;
468 ip_v4mapinfo_func_t *ip_m_v4mapping;
469 ip_v6mapinfo_func_t *ip_m_v6mapping;
470 ip_v6intfid_func_t *ip_m_v6intfid;
471 ip_v6intfid_func_t *ip_m_v6destintfid;
472 } ip_m_t;
473
474 /*
475 * The following functions attempt to reduce the link layer dependency
476 * of the IP stack. The current set of link specific operations are:
477 * a. map from IPv4 class D (224.0/4) multicast address range or the
478 * IPv6 multicast address range (ff00::/8) to the link layer multicast
479 * address.
480 * b. derive the default IPv6 interface identifier from the interface.
481 * c. derive the default IPv6 destination interface identifier from
482 * the interface (point-to-point only).
483 */
484 extern void ip_mcast_mapping(struct ill_s *, uchar_t *, uchar_t *);
485 /* ip_m_v6*intfid return void and are never NULL */
486 #define MEDIA_V6INTFID(ip_m, ill, v6ptr) (ip_m)->ip_m_v6intfid(ill, v6ptr)
487 #define MEDIA_V6DESTINTFID(ip_m, ill, v6ptr) \
488 (ip_m)->ip_m_v6destintfid(ill, v6ptr)
489
490 /* Router entry types */
491 #define IRE_BROADCAST 0x0001 /* Route entry for broadcast address */
492 #define IRE_DEFAULT 0x0002 /* Route entry for default gateway */
493 #define IRE_LOCAL 0x0004 /* Route entry for local address */
494 #define IRE_LOOPBACK 0x0008 /* Route entry for loopback address */
495 #define IRE_PREFIX 0x0010 /* Route entry for prefix routes */
496 #ifndef _KERNEL
497 /* Keep so user-level still compiles */
498 #define IRE_CACHE 0x0020 /* Cached Route entry */
499 #endif
500 #define IRE_IF_NORESOLVER 0x0040 /* Route entry for local interface */
501 /* net without any address mapping. */
502 #define IRE_IF_RESOLVER 0x0080 /* Route entry for local interface */
503 /* net with resolver. */
504 #define IRE_HOST 0x0100 /* Host route entry */
505 /* Keep so user-level still compiles */
506 #define IRE_HOST_REDIRECT 0x0200 /* only used for T_SVR4_OPTMGMT_REQ */
507 #define IRE_IF_CLONE 0x0400 /* Per host clone of IRE_IF */
508 #define IRE_MULTICAST 0x0800 /* Special - not in table */
509 #define IRE_NOROUTE 0x1000 /* Special - not in table */
510
511 #define IRE_INTERFACE (IRE_IF_NORESOLVER | IRE_IF_RESOLVER)
512
513 #define IRE_IF_ALL (IRE_IF_NORESOLVER | IRE_IF_RESOLVER | \
514 IRE_IF_CLONE)
515 #define IRE_OFFSUBNET (IRE_DEFAULT | IRE_PREFIX | IRE_HOST)
516 #define IRE_OFFLINK IRE_OFFSUBNET
517 /*
518 * Note that we view IRE_NOROUTE as ONLINK since we can "send" to them without
519 * going through a router; the result of sending will be an error/icmp error.
520 */
521 #define IRE_ONLINK (IRE_IF_ALL|IRE_LOCAL|IRE_LOOPBACK| \
522 IRE_BROADCAST|IRE_MULTICAST|IRE_NOROUTE)
523
524 /* Arguments to ire_flush_cache() */
525 #define IRE_FLUSH_DELETE 0
526 #define IRE_FLUSH_ADD 1
527 #define IRE_FLUSH_GWCHANGE 2
528
529 /*
530 * Flags to ire_route_recursive
531 */
532 #define IRR_NONE 0
533 #define IRR_ALLOCATE 1 /* OK to allocate IRE_IF_CLONE */
534 #define IRR_INCOMPLETE 2 /* OK to return incomplete chain */
535
536 /*
537 * Open/close synchronization flags.
538 * These are kept in a separate field in the conn and the synchronization
539 * depends on the atomic 32 bit access to that field.
540 */
541 #define CONN_CLOSING 0x01 /* ip_close waiting for ip_wsrv */
542 #define CONN_CONDEMNED 0x02 /* conn is closing, no more refs */
543 #define CONN_INCIPIENT 0x04 /* conn not yet visible, no refs */
544 #define CONN_QUIESCED 0x08 /* conn is now quiescent */
545 #define CONN_UPDATE_ILL 0x10 /* conn_update_ill in progress */
546
547 /*
548 * Flags for dce_flags field. Specifies which information has been set.
549 * dce_ident is always present, but the other ones are identified by the flags.
550 */
551 #define DCEF_DEFAULT 0x0001 /* Default DCE - no pmtu or uinfo */
552 #define DCEF_PMTU 0x0002 /* Different than interface MTU */
553 #define DCEF_UINFO 0x0004 /* dce_uinfo set */
554 #define DCEF_TOO_SMALL_PMTU 0x0008 /* Smaller than IPv4 MIN */
555
556 #ifdef _KERNEL
557 /*
558 * Extra structures need for per-src-addr filtering (IGMPv3/MLDv2)
559 */
560 #define MAX_FILTER_SIZE 64
561
562 typedef struct slist_s {
563 int sl_numsrc;
564 in6_addr_t sl_addr[MAX_FILTER_SIZE];
565 } slist_t;
566
567 /*
568 * Following struct is used to maintain retransmission state for
569 * a multicast group. One rtx_state_t struct is an in-line field
570 * of the ilm_t struct; the slist_ts in the rtx_state_t struct are
571 * alloc'd as needed.
572 */
573 typedef struct rtx_state_s {
574 uint_t rtx_timer; /* retrans timer */
575 int rtx_cnt; /* retrans count */
576 int rtx_fmode_cnt; /* retrans count for fmode change */
577 slist_t *rtx_allow;
578 slist_t *rtx_block;
579 } rtx_state_t;
580
581 /*
582 * Used to construct list of multicast address records that will be
583 * sent in a single listener report.
584 */
585 typedef struct mrec_s {
586 struct mrec_s *mrec_next;
587 uint8_t mrec_type;
588 uint8_t mrec_auxlen; /* currently unused */
589 in6_addr_t mrec_group;
590 slist_t mrec_srcs;
591 } mrec_t;
592
593 /* Group membership list per upper conn */
594
595 /*
596 * We record the multicast information from the socket option in
597 * ilg_ifaddr/ilg_ifindex. This allows rejoining the group in the case when
598 * the ifaddr (or ifindex) disappears and later reappears, potentially on
599 * a different ill. The IPv6 multicast socket options and ioctls all specify
600 * the interface using an ifindex. For IPv4 some socket options/ioctls use
601 * the interface address and others use the index. We record here the method
602 * that was actually used (and leave the other of ilg_ifaddr or ilg_ifindex)
603 * at zero so that we can rejoin the way the application intended.
604 *
605 * We track the ill on which we will or already have joined an ilm using
606 * ilg_ill. When we have succeeded joining the ilm and have a refhold on it
607 * then we set ilg_ilm. Thus intentionally there is a window where ilg_ill is
608 * set and ilg_ilm is not set. This allows clearing ilg_ill as a signal that
609 * the ill is being unplumbed and the ilm should be discarded.
610 *
611 * ilg records the state of multicast memberships of a socket end point.
612 * ilm records the state of multicast memberships with the driver and is
613 * maintained per interface.
614 *
615 * The ilg state is protected by conn_ilg_lock.
616 * The ilg will not be freed until ilg_refcnt drops to zero.
617 */
618 typedef struct ilg_s {
619 struct ilg_s *ilg_next;
620 struct ilg_s **ilg_ptpn;
621 struct conn_s *ilg_connp; /* Back pointer to get lock */
622 in6_addr_t ilg_v6group;
623 ipaddr_t ilg_ifaddr; /* For some IPv4 cases */
624 uint_t ilg_ifindex; /* IPv6 and some other IPv4 cases */
625 struct ill_s *ilg_ill; /* Where ilm is joined. No refhold */
626 struct ilm_s *ilg_ilm; /* With ilm_refhold */
627 uint_t ilg_refcnt;
628 mcast_record_t ilg_fmode; /* MODE_IS_INCLUDE/MODE_IS_EXCLUDE */
629 slist_t *ilg_filter;
630 boolean_t ilg_condemned; /* Conceptually deleted */
631 } ilg_t;
632
633 /*
634 * Multicast address list entry for ill.
635 * ilm_ill is used by IPv4 and IPv6
636 *
637 * The ilm state (and other multicast state on the ill) is protected by
638 * ill_mcast_lock. Operations that change state on both an ilg and ilm
639 * in addition use ill_mcast_serializer to ensure that we can't have
640 * interleaving between e.g., add and delete operations for the same conn_t,
641 * group, and ill. The ill_mcast_serializer is also used to ensure that
642 * multicast group joins do not occur on an interface that is in the process
643 * of joining an IPMP group.
644 *
645 * The comment below (and for other netstack_t references) refers
646 * to the fact that we only do netstack_hold in particular cases,
647 * such as the references from open endpoints (ill_t and conn_t's
648 * pointers). Internally within IP we rely on IP's ability to cleanup e.g.
649 * ire_t's when an ill goes away.
650 */
651 typedef struct ilm_s {
652 in6_addr_t ilm_v6addr;
653 int ilm_refcnt;
654 uint_t ilm_timer; /* IGMP/MLD query resp timer, in msec */
655 struct ilm_s *ilm_next; /* Linked list for each ill */
656 uint_t ilm_state; /* state of the membership */
657 struct ill_s *ilm_ill; /* Back pointer to ill - ill_ilm_cnt */
658 zoneid_t ilm_zoneid;
659 int ilm_no_ilg_cnt; /* number of joins w/ no ilg */
660 mcast_record_t ilm_fmode; /* MODE_IS_INCLUDE/MODE_IS_EXCLUDE */
661 slist_t *ilm_filter; /* source filter list */
662 slist_t *ilm_pendsrcs; /* relevant src addrs for pending req */
663 rtx_state_t ilm_rtx; /* SCR retransmission state */
664 ipaddr_t ilm_ifaddr; /* For IPv4 netstat */
665 ip_stack_t *ilm_ipst; /* Does not have a netstack_hold */
666 } ilm_t;
667
668 #define ilm_addr V4_PART_OF_V6(ilm_v6addr)
669
670 /*
671 * Soft reference to an IPsec SA.
672 *
673 * On relative terms, conn's can be persistent (living as long as the
674 * processes which create them), while SA's are ephemeral (dying when
675 * they hit their time-based or byte-based lifetimes).
676 *
677 * We could hold a hard reference to an SA from an ipsec_latch_t,
678 * but this would cause expired SA's to linger for a potentially
679 * unbounded time.
680 *
681 * Instead, we remember the hash bucket number and bucket generation
682 * in addition to the pointer. The bucket generation is incremented on
683 * each deletion.
684 */
685 typedef struct ipsa_ref_s
686 {
687 struct ipsa_s *ipsr_sa;
688 struct isaf_s *ipsr_bucket;
689 uint64_t ipsr_gen;
690 } ipsa_ref_t;
691
692 /*
693 * IPsec "latching" state.
694 *
695 * In the presence of IPsec policy, fully-bound conn's bind a connection
696 * to more than just the 5-tuple, but also a specific IPsec action and
697 * identity-pair.
698 * The identity pair is accessed from both the receive and transmit side
699 * hence it is maintained in the ipsec_latch_t structure. conn_latch and
700 * ixa_ipsec_latch points to it.
701 * The policy and actions are stored in conn_latch_in_policy and
702 * conn_latch_in_action for the inbound side, and in ixa_ipsec_policy and
703 * ixa_ipsec_action for the transmit side.
704 *
705 * As an optimization, we also cache soft references to IPsec SA's in
706 * ip_xmit_attr_t so that we can fast-path around most of the work needed for
707 * outbound IPsec SA selection.
708 */
709 typedef struct ipsec_latch_s
710 {
711 kmutex_t ipl_lock;
712 uint32_t ipl_refcnt;
713
714 struct ipsid_s *ipl_local_cid;
715 struct ipsid_s *ipl_remote_cid;
716 unsigned int
717 ipl_ids_latched : 1,
718
719 ipl_pad_to_bit_31 : 31;
720 } ipsec_latch_t;
721
722 #define IPLATCH_REFHOLD(ipl) { \
723 atomic_inc_32(&(ipl)->ipl_refcnt); \
724 ASSERT((ipl)->ipl_refcnt != 0); \
725 }
726
727 #define IPLATCH_REFRELE(ipl) { \
728 ASSERT((ipl)->ipl_refcnt != 0); \
729 membar_exit(); \
730 if (atomic_dec_32_nv(&(ipl)->ipl_refcnt) == 0) \
731 iplatch_free(ipl); \
732 }
733
734 /*
735 * peer identity structure.
736 */
737 typedef struct conn_s conn_t;
738
739 /*
740 * This is used to match an inbound/outbound datagram with policy.
741 */
742 typedef struct ipsec_selector {
743 in6_addr_t ips_local_addr_v6;
744 in6_addr_t ips_remote_addr_v6;
745 uint16_t ips_local_port;
746 uint16_t ips_remote_port;
747 uint8_t ips_icmp_type;
748 uint8_t ips_icmp_code;
749 uint8_t ips_protocol;
750 uint8_t ips_isv4 : 1,
751 ips_is_icmp_inv_acq: 1;
752 } ipsec_selector_t;
753
754 /*
755 * Note that we put v4 addresses in the *first* 32-bit word of the
756 * selector rather than the last to simplify the prefix match/mask code
757 * in spd.c
758 */
759 #define ips_local_addr_v4 ips_local_addr_v6.s6_addr32[0]
760 #define ips_remote_addr_v4 ips_remote_addr_v6.s6_addr32[0]
761
762 /* Values used in IP by IPSEC Code */
763 #define IPSEC_OUTBOUND B_TRUE
764 #define IPSEC_INBOUND B_FALSE
765
766 /*
767 * There are two variants in policy failures. The packet may come in
768 * secure when not needed (IPSEC_POLICY_???_NOT_NEEDED) or it may not
769 * have the desired level of protection (IPSEC_POLICY_MISMATCH).
770 */
771 #define IPSEC_POLICY_NOT_NEEDED 0
772 #define IPSEC_POLICY_MISMATCH 1
773 #define IPSEC_POLICY_AUTH_NOT_NEEDED 2
774 #define IPSEC_POLICY_ENCR_NOT_NEEDED 3
775 #define IPSEC_POLICY_SE_NOT_NEEDED 4
776 #define IPSEC_POLICY_MAX 5 /* Always max + 1. */
777
778 /*
779 * Check with IPSEC inbound policy if
780 *
781 * 1) per-socket policy is present - indicated by conn_in_enforce_policy.
782 * 2) Or if we have not cached policy on the conn and the global policy is
783 * non-empty.
784 */
785 #define CONN_INBOUND_POLICY_PRESENT(connp, ipss) \
786 ((connp)->conn_in_enforce_policy || \
787 (!((connp)->conn_policy_cached) && \
788 (ipss)->ipsec_inbound_v4_policy_present))
789
790 #define CONN_INBOUND_POLICY_PRESENT_V6(connp, ipss) \
791 ((connp)->conn_in_enforce_policy || \
792 (!(connp)->conn_policy_cached && \
793 (ipss)->ipsec_inbound_v6_policy_present))
794
795 #define CONN_OUTBOUND_POLICY_PRESENT(connp, ipss) \
796 ((connp)->conn_out_enforce_policy || \
797 (!((connp)->conn_policy_cached) && \
798 (ipss)->ipsec_outbound_v4_policy_present))
799
800 #define CONN_OUTBOUND_POLICY_PRESENT_V6(connp, ipss) \
801 ((connp)->conn_out_enforce_policy || \
802 (!(connp)->conn_policy_cached && \
803 (ipss)->ipsec_outbound_v6_policy_present))
804
805 /*
806 * Information cached in IRE for upper layer protocol (ULP).
807 */
808 typedef struct iulp_s {
809 boolean_t iulp_set; /* Is any metric set? */
810 uint32_t iulp_ssthresh; /* Slow start threshold (TCP). */
811 clock_t iulp_rtt; /* Guestimate in millisecs. */
812 clock_t iulp_rtt_sd; /* Cached value of RTT variance. */
813 uint32_t iulp_spipe; /* Send pipe size. */
814 uint32_t iulp_rpipe; /* Receive pipe size. */
815 uint32_t iulp_rtomax; /* Max round trip timeout. */
816 uint32_t iulp_sack; /* Use SACK option (TCP)? */
817 uint32_t iulp_mtu; /* Setable with routing sockets */
818
819 uint32_t
820 iulp_tstamp_ok : 1, /* Use timestamp option (TCP)? */
821 iulp_wscale_ok : 1, /* Use window scale option (TCP)? */
822 iulp_ecn_ok : 1, /* Enable ECN (for TCP)? */
823 iulp_pmtud_ok : 1, /* Enable PMTUd? */
824
825 /* These three are passed out by ip_set_destination */
826 iulp_localnet: 1, /* IRE_ONLINK */
827 iulp_loopback: 1, /* IRE_LOOPBACK */
828 iulp_local: 1, /* IRE_LOCAL */
829
830 iulp_not_used : 25;
831 } iulp_t;
832
833 /*
834 * The conn drain list structure (idl_t), protected by idl_lock. Each conn_t
835 * inserted in the list points back at this idl_t using conn_idl, and is
836 * chained by conn_drain_next and conn_drain_prev, which are also protected by
837 * idl_lock. When flow control is relieved, either ip_wsrv() (STREAMS) or
838 * ill_flow_enable() (non-STREAMS) will call conn_drain().
839 *
840 * The conn drain list, idl_t, itself is part of tx cookie list structure.
841 * A tx cookie list points to a blocked Tx ring and contains the list of
842 * all conn's that are blocked due to the flow-controlled Tx ring (via
843 * the idl drain list). Note that a link can have multiple Tx rings. The
844 * drain list will store the conn's blocked due to Tx ring being flow
845 * controlled.
846 */
847
848 typedef uintptr_t ip_mac_tx_cookie_t;
849 typedef struct idl_s idl_t;
850 typedef struct idl_tx_list_s idl_tx_list_t;
851
852 struct idl_tx_list_s {
853 ip_mac_tx_cookie_t txl_cookie;
854 kmutex_t txl_lock; /* Lock for this list */
855 idl_t *txl_drain_list;
856 int txl_drain_index;
857 };
858
859 struct idl_s {
860 conn_t *idl_conn; /* Head of drain list */
861 kmutex_t idl_lock; /* Lock for this list */
862 idl_tx_list_t *idl_itl;
863 };
864
865 /*
866 * Interface route structure which holds the necessary information to recreate
867 * routes that are tied to an interface i.e. have ire_ill set.
868 *
869 * These routes which were initially created via a routing socket or via the
870 * SIOCADDRT ioctl may be gateway routes (RTF_GATEWAY being set) or may be
871 * traditional interface routes. When an ill comes back up after being
872 * down, this information will be used to recreate the routes. These
873 * are part of an mblk_t chain that hangs off of the ILL (ill_saved_ire_mp).
874 */
875 typedef struct ifrt_s {
876 ushort_t ifrt_type; /* Type of IRE */
877 in6_addr_t ifrt_v6addr; /* Address IRE represents. */
878 in6_addr_t ifrt_v6gateway_addr; /* Gateway if IRE_OFFLINK */
879 in6_addr_t ifrt_v6setsrc_addr; /* Src addr if RTF_SETSRC */
880 in6_addr_t ifrt_v6mask; /* Mask for matching IRE. */
881 uint32_t ifrt_flags; /* flags related to route */
882 iulp_t ifrt_metrics; /* Routing socket metrics */
883 zoneid_t ifrt_zoneid; /* zoneid for route */
884 } ifrt_t;
885
886 #define ifrt_addr V4_PART_OF_V6(ifrt_v6addr)
887 #define ifrt_gateway_addr V4_PART_OF_V6(ifrt_v6gateway_addr)
888 #define ifrt_mask V4_PART_OF_V6(ifrt_v6mask)
889 #define ifrt_setsrc_addr V4_PART_OF_V6(ifrt_v6setsrc_addr)
890
891 /* Number of IP addresses that can be hosted on a physical interface */
892 #define MAX_ADDRS_PER_IF 8192
893 /*
894 * Number of Source addresses to be considered for source address
895 * selection. Used by ipif_select_source_v4/v6.
896 */
897 #define MAX_IPIF_SELECT_SOURCE 50
898
899 #ifdef IP_DEBUG
900 /*
901 * Trace refholds and refreles for debugging.
902 */
903 #define TR_STACK_DEPTH 14
904 typedef struct tr_buf_s {
905 int tr_depth;
906 clock_t tr_time;
907 pc_t tr_stack[TR_STACK_DEPTH];
908 } tr_buf_t;
909
910 typedef struct th_trace_s {
911 int th_refcnt;
912 uint_t th_trace_lastref;
913 kthread_t *th_id;
914 #define TR_BUF_MAX 38
915 tr_buf_t th_trbuf[TR_BUF_MAX];
916 } th_trace_t;
917
918 typedef struct th_hash_s {
919 list_node_t thh_link;
920 mod_hash_t *thh_hash;
921 ip_stack_t *thh_ipst;
922 } th_hash_t;
923 #endif
924
925 /* The following are ipif_state_flags */
926 #define IPIF_CONDEMNED 0x1 /* The ipif is being removed */
927 #define IPIF_CHANGING 0x2 /* A critcal ipif field is changing */
928 #define IPIF_SET_LINKLOCAL 0x10 /* transient flag during bringup */
929
930 /* IP interface structure, one per local address */
931 typedef struct ipif_s {
932 struct ipif_s *ipif_next;
933 struct ill_s *ipif_ill; /* Back pointer to our ill */
934 int ipif_id; /* Logical unit number */
935 in6_addr_t ipif_v6lcl_addr; /* Local IP address for this if. */
936 in6_addr_t ipif_v6subnet; /* Subnet prefix for this if. */
937 in6_addr_t ipif_v6net_mask; /* Net mask for this interface. */
938 in6_addr_t ipif_v6brd_addr; /* Broadcast addr for this interface. */
939 in6_addr_t ipif_v6pp_dst_addr; /* Point-to-point dest address. */
940 uint64_t ipif_flags; /* Interface flags. */
941 uint_t ipif_ire_type; /* IRE_LOCAL or IRE_LOOPBACK */
942
943 /*
944 * The packet count in the ipif contain the sum of the
945 * packet counts in dead IRE_LOCAL/LOOPBACK for this ipif.
946 */
947 uint_t ipif_ib_pkt_count; /* Inbound packets for our dead IREs */
948
949 /* Exclusive bit fields, protected by ipsq_t */
950 unsigned int
951 ipif_was_up : 1, /* ipif was up before */
952 ipif_addr_ready : 1, /* DAD is done */
953 ipif_was_dup : 1, /* DAD had failed */
954 ipif_added_nce : 1, /* nce added for local address */
955
956 ipif_pad_to_31 : 28;
957
958 ilm_t *ipif_allhosts_ilm; /* For all-nodes join */
959 ilm_t *ipif_solmulti_ilm; /* For IPv6 solicited multicast join */
960
961 uint_t ipif_seqid; /* unique index across all ills */
962 uint_t ipif_state_flags; /* See IPIF_* flag defs above */
963 uint_t ipif_refcnt; /* active consistent reader cnt */
964
965 zoneid_t ipif_zoneid; /* zone ID number */
966 timeout_id_t ipif_recovery_id; /* Timer for DAD recovery */
967 boolean_t ipif_trace_disable; /* True when alloc fails */
968 /*
969 * For an IPMP interface, ipif_bound_ill tracks the ill whose hardware
970 * information this ipif is associated with via ARP/NDP. We can use
971 * an ill pointer (rather than an index) because only ills that are
972 * part of a group will be pointed to, and an ill cannot disappear
973 * while it's in a group.
974 */
975 struct ill_s *ipif_bound_ill;
976 struct ipif_s *ipif_bound_next; /* bound ipif chain */
977 boolean_t ipif_bound; /* B_TRUE if we successfully bound */
978
979 struct ire_s *ipif_ire_local; /* Our IRE_LOCAL or LOOPBACK */
980 struct ire_s *ipif_ire_if; /* Our IRE_INTERFACE */
981 } ipif_t;
982
983 /*
984 * The following table lists the protection levels of the various members
985 * of the ipif_t. The following notation is used.
986 *
987 * Write once - Written to only once at the time of bringing up
988 * the interface and can be safely read after the bringup without any lock.
989 *
990 * ipsq - Need to execute in the ipsq to perform the indicated access.
991 *
992 * ill_lock - Need to hold this mutex to perform the indicated access.
993 *
994 * ill_g_lock - Need to hold this rw lock as reader/writer for read access or
995 * write access respectively.
996 *
997 * down ill - Written to only when the ill is down (i.e all ipifs are down)
998 * up ill - Read only when the ill is up (i.e. at least 1 ipif is up)
999 *
1000 * Table of ipif_t members and their protection
1001 *
1002 * ipif_next ipsq + ill_lock + ipsq OR ill_lock OR
1003 * ill_g_lock ill_g_lock
1004 * ipif_ill ipsq + down ipif write once
1005 * ipif_id ipsq + down ipif write once
1006 * ipif_v6lcl_addr ipsq + down ipif up ipif
1007 * ipif_v6subnet ipsq + down ipif up ipif
1008 * ipif_v6net_mask ipsq + down ipif up ipif
1009 *
1010 * ipif_v6brd_addr
1011 * ipif_v6pp_dst_addr
1012 * ipif_flags ill_lock ill_lock
1013 * ipif_ire_type ipsq + down ill up ill
1014 *
1015 * ipif_ib_pkt_count Approx
1016 *
1017 * bit fields ill_lock ill_lock
1018 *
1019 * ipif_allhosts_ilm ipsq ipsq
1020 * ipif_solmulti_ilm ipsq ipsq
1021 *
1022 * ipif_seqid ipsq Write once
1023 *
1024 * ipif_state_flags ill_lock ill_lock
1025 * ipif_refcnt ill_lock ill_lock
1026 * ipif_bound_ill ipsq + ipmp_lock ipsq OR ipmp_lock
1027 * ipif_bound_next ipsq ipsq
1028 * ipif_bound ipsq ipsq
1029 *
1030 * ipif_ire_local ipsq + ips_ill_g_lock ipsq OR ips_ill_g_lock
1031 * ipif_ire_if ipsq + ips_ill_g_lock ipsq OR ips_ill_g_lock
1032 */
1033
1034 /*
1035 * Return values from ip_laddr_verify_{v4,v6}
1036 */
1037 typedef enum { IPVL_UNICAST_UP, IPVL_UNICAST_DOWN, IPVL_MCAST, IPVL_BCAST,
1038 IPVL_BAD} ip_laddr_t;
1039
1040
1041 #define IP_TR_HASH(tid) ((((uintptr_t)tid) >> 6) & (IP_TR_HASH_MAX - 1))
1042
1043 #ifdef DEBUG
1044 #define IPIF_TRACE_REF(ipif) ipif_trace_ref(ipif)
1045 #define ILL_TRACE_REF(ill) ill_trace_ref(ill)
1046 #define IPIF_UNTRACE_REF(ipif) ipif_untrace_ref(ipif)
1047 #define ILL_UNTRACE_REF(ill) ill_untrace_ref(ill)
1048 #else
1049 #define IPIF_TRACE_REF(ipif)
1050 #define ILL_TRACE_REF(ill)
1051 #define IPIF_UNTRACE_REF(ipif)
1052 #define ILL_UNTRACE_REF(ill)
1053 #endif
1054
1055 /* IPv4 compatibility macros */
1056 #define ipif_lcl_addr V4_PART_OF_V6(ipif_v6lcl_addr)
1057 #define ipif_subnet V4_PART_OF_V6(ipif_v6subnet)
1058 #define ipif_net_mask V4_PART_OF_V6(ipif_v6net_mask)
1059 #define ipif_brd_addr V4_PART_OF_V6(ipif_v6brd_addr)
1060 #define ipif_pp_dst_addr V4_PART_OF_V6(ipif_v6pp_dst_addr)
1061
1062 /* Macros for easy backreferences to the ill. */
1063 #define ipif_isv6 ipif_ill->ill_isv6
1064
1065 #define SIOCLIFADDR_NDX 112 /* ndx of SIOCLIFADDR in the ndx ioctl table */
1066
1067 /*
1068 * mode value for ip_ioctl_finish for finishing an ioctl
1069 */
1070 #define CONN_CLOSE 1 /* No mi_copy */
1071 #define COPYOUT 2 /* do an mi_copyout if needed */
1072 #define NO_COPYOUT 3 /* do an mi_copy_done */
1073 #define IPI2MODE(ipi) ((ipi)->ipi_flags & IPI_GET_CMD ? COPYOUT : NO_COPYOUT)
1074
1075 /*
1076 * The IP-MT design revolves around the serialization objects ipsq_t (IPSQ)
1077 * and ipxop_t (exclusive operation or "xop"). Becoming "writer" on an IPSQ
1078 * ensures that no other threads can become "writer" on any IPSQs sharing that
1079 * IPSQ's xop until the writer thread is done.
1080 *
1081 * Each phyint points to one IPSQ that remains fixed over the phyint's life.
1082 * Each IPSQ points to one xop that can change over the IPSQ's life. If a
1083 * phyint is *not* in an IPMP group, then its IPSQ will refer to the IPSQ's
1084 * "own" xop (ipsq_ownxop). If a phyint *is* part of an IPMP group, then its
1085 * IPSQ will refer to the "group" xop, which is shorthand for the xop of the
1086 * IPSQ of the IPMP meta-interface's phyint. Thus, all phyints that are part
1087 * of the same IPMP group will have their IPSQ's point to the group xop, and
1088 * thus becoming "writer" on any phyint in the group will prevent any other
1089 * writer on any other phyint in the group. All IPSQs sharing the same xop
1090 * are chained together through ipsq_next (in the degenerate common case,
1091 * ipsq_next simply refers to itself). Note that the group xop is guaranteed
1092 * to exist at least as long as there are members in the group, since the IPMP
1093 * meta-interface can only be destroyed if the group is empty.
1094 *
1095 * Incoming exclusive operation requests are enqueued on the IPSQ they arrived
1096 * on rather than the xop. This makes switching xop's (as would happen when a
1097 * phyint leaves an IPMP group) simple, because after the phyint leaves the
1098 * group, any operations enqueued on its IPSQ can be safely processed with
1099 * respect to its new xop, and any operations enqueued on the IPSQs of its
1100 * former group can be processed with respect to their existing group xop.
1101 * Even so, switching xops is a subtle dance; see ipsq_dq() for details.
1102 *
1103 * An IPSQ's "own" xop is embedded within the IPSQ itself since they have have
1104 * identical lifetimes, and because doing so simplifies pointer management.
1105 * While each phyint and IPSQ point to each other, it is not possible to free
1106 * the IPSQ when the phyint is freed, since we may still *inside* the IPSQ
1107 * when the phyint is being freed. Thus, ipsq_phyint is set to NULL when the
1108 * phyint is freed, and the IPSQ free is later done in ipsq_exit().
1109 *
1110 * ipsq_t synchronization: read write
1111 *
1112 * ipsq_xopq_mphead ipx_lock ipx_lock
1113 * ipsq_xopq_mptail ipx_lock ipx_lock
1114 * ipsq_xop_switch_mp ipsq_lock ipsq_lock
1115 * ipsq_phyint write once write once
1116 * ipsq_next RW_READER ill_g_lock RW_WRITER ill_g_lock
1117 * ipsq_xop ipsq_lock or ipsq ipsq_lock + ipsq
1118 * ipsq_swxop ipsq ipsq
1119 * ipsq_ownxop see ipxop_t see ipxop_t
1120 * ipsq_ipst write once write once
1121 *
1122 * ipxop_t synchronization: read write
1123 *
1124 * ipx_writer ipx_lock ipx_lock
1125 * ipx_xop_queued ipx_lock ipx_lock
1126 * ipx_mphead ipx_lock ipx_lock
1127 * ipx_mptail ipx_lock ipx_lock
1128 * ipx_ipsq write once write once
1129 * ips_ipsq_queued ipx_lock ipx_lock
1130 * ipx_waitfor ipsq or ipx_lock ipsq + ipx_lock
1131 * ipx_reentry_cnt ipsq or ipx_lock ipsq + ipx_lock
1132 * ipx_current_done ipsq ipsq
1133 * ipx_current_ioctl ipsq ipsq
1134 * ipx_current_ipif ipsq or ipx_lock ipsq + ipx_lock
1135 * ipx_pending_ipif ipsq or ipx_lock ipsq + ipx_lock
1136 * ipx_pending_mp ipsq or ipx_lock ipsq + ipx_lock
1137 * ipx_forced ipsq ipsq
1138 * ipx_depth ipsq ipsq
1139 * ipx_stack ipsq ipsq
1140 */
1141 typedef struct ipxop_s {
1142 kmutex_t ipx_lock; /* see above */
1143 kthread_t *ipx_writer; /* current owner */
1144 mblk_t *ipx_mphead; /* messages tied to this op */
1145 mblk_t *ipx_mptail;
1146 struct ipsq_s *ipx_ipsq; /* associated ipsq */
1147 boolean_t ipx_ipsq_queued; /* ipsq using xop has queued op */
1148 int ipx_waitfor; /* waiting; values encoded below */
1149 int ipx_reentry_cnt;
1150 boolean_t ipx_current_done; /* is the current operation done? */
1151 int ipx_current_ioctl; /* current ioctl, or 0 if no ioctl */
1152 ipif_t *ipx_current_ipif; /* ipif for current op */
1153 ipif_t *ipx_pending_ipif; /* ipif for ipx_pending_mp */
1154 mblk_t *ipx_pending_mp; /* current ioctl mp while waiting */
1155 boolean_t ipx_forced; /* debugging aid */
1156 #ifdef DEBUG
1157 int ipx_depth; /* debugging aid */
1158 #define IPX_STACK_DEPTH 15
1159 pc_t ipx_stack[IPX_STACK_DEPTH]; /* debugging aid */
1160 #endif
1161 } ipxop_t;
1162
1163 typedef struct ipsq_s {
1164 kmutex_t ipsq_lock; /* see above */
1165 mblk_t *ipsq_switch_mp; /* op to handle right after switch */
1166 mblk_t *ipsq_xopq_mphead; /* list of excl ops (mostly ioctls) */
1167 mblk_t *ipsq_xopq_mptail;
1168 struct phyint *ipsq_phyint; /* associated phyint */
1169 struct ipsq_s *ipsq_next; /* next ipsq sharing ipsq_xop */
1170 struct ipxop_s *ipsq_xop; /* current xop synchronization info */
1171 struct ipxop_s *ipsq_swxop; /* switch xop to on ipsq_exit() */
1172 struct ipxop_s ipsq_ownxop; /* our own xop (may not be in-use) */
1173 ip_stack_t *ipsq_ipst; /* does not have a netstack_hold */
1174 } ipsq_t;
1175
1176 /*
1177 * ipx_waitfor values:
1178 */
1179 enum {
1180 IPIF_DOWN = 1, /* ipif_down() waiting for refcnts to drop */
1181 ILL_DOWN, /* ill_down() waiting for refcnts to drop */
1182 IPIF_FREE, /* ipif_free() waiting for refcnts to drop */
1183 ILL_FREE /* ill unplumb waiting for refcnts to drop */
1184 };
1185
1186 /* Operation types for ipsq_try_enter() */
1187 #define CUR_OP 0 /* request writer within current operation */
1188 #define NEW_OP 1 /* request writer for a new operation */
1189 #define SWITCH_OP 2 /* request writer once IPSQ XOP switches */
1190
1191 /*
1192 * Kstats tracked on each IPMP meta-interface. Order here must match
1193 * ipmp_kstats[] in ip/ipmp.c.
1194 */
1195 enum {
1196 IPMP_KSTAT_OBYTES, IPMP_KSTAT_OBYTES64, IPMP_KSTAT_RBYTES,
1197 IPMP_KSTAT_RBYTES64, IPMP_KSTAT_OPACKETS, IPMP_KSTAT_OPACKETS64,
1198 IPMP_KSTAT_OERRORS, IPMP_KSTAT_IPACKETS, IPMP_KSTAT_IPACKETS64,
1199 IPMP_KSTAT_IERRORS, IPMP_KSTAT_MULTIRCV, IPMP_KSTAT_MULTIXMT,
1200 IPMP_KSTAT_BRDCSTRCV, IPMP_KSTAT_BRDCSTXMT, IPMP_KSTAT_LINK_UP,
1201 IPMP_KSTAT_MAX /* keep last */
1202 };
1203
1204 /*
1205 * phyint represents state that is common to both IPv4 and IPv6 interfaces.
1206 * There is a separate ill_t representing IPv4 and IPv6 which has a
1207 * backpointer to the phyint structure for accessing common state.
1208 */
1209 typedef struct phyint {
1210 struct ill_s *phyint_illv4;
1211 struct ill_s *phyint_illv6;
1212 uint_t phyint_ifindex; /* SIOCSLIFINDEX */
1213 uint64_t phyint_flags;
1214 avl_node_t phyint_avl_by_index; /* avl tree by index */
1215 avl_node_t phyint_avl_by_name; /* avl tree by name */
1216 kmutex_t phyint_lock;
1217 struct ipsq_s *phyint_ipsq; /* back pointer to ipsq */
1218 struct ipmp_grp_s *phyint_grp; /* associated IPMP group */
1219 char phyint_name[LIFNAMSIZ]; /* physical interface name */
1220 uint64_t phyint_kstats0[IPMP_KSTAT_MAX]; /* baseline kstats */
1221 } phyint_t;
1222
1223 #define CACHE_ALIGN_SIZE 64
1224 #define CACHE_ALIGN(align_struct) P2ROUNDUP(sizeof (struct align_struct),\
1225 CACHE_ALIGN_SIZE)
1226 struct _phyint_list_s_ {
1227 avl_tree_t phyint_list_avl_by_index; /* avl tree by index */
1228 avl_tree_t phyint_list_avl_by_name; /* avl tree by name */
1229 };
1230
1231 typedef union phyint_list_u {
1232 struct _phyint_list_s_ phyint_list_s;
1233 char phyint_list_filler[CACHE_ALIGN(_phyint_list_s_)];
1234 } phyint_list_t;
1235
1236 #define phyint_list_avl_by_index phyint_list_s.phyint_list_avl_by_index
1237 #define phyint_list_avl_by_name phyint_list_s.phyint_list_avl_by_name
1238
1239 /*
1240 * Fragmentation hash bucket
1241 */
1242 typedef struct ipfb_s {
1243 struct ipf_s *ipfb_ipf; /* List of ... */
1244 size_t ipfb_count; /* Count of bytes used by frag(s) */
1245 kmutex_t ipfb_lock; /* Protect all ipf in list */
1246 uint_t ipfb_frag_pkts; /* num of distinct fragmented pkts */
1247 } ipfb_t;
1248
1249 /*
1250 * IRE bucket structure. Usually there is an array of such structures,
1251 * each pointing to a linked list of ires. irb_refcnt counts the number
1252 * of walkers of a given hash bucket. Usually the reference count is
1253 * bumped up if the walker wants no IRES to be DELETED while walking the
1254 * list. Bumping up does not PREVENT ADDITION. This allows walking a given
1255 * hash bucket without stumbling up on a free pointer.
1256 *
1257 * irb_t structures in ip_ftable are dynamically allocated and freed.
1258 * In order to identify the irb_t structures that can be safely kmem_free'd
1259 * we need to ensure that
1260 * - the irb_refcnt is quiescent, indicating no other walkers,
1261 * - no other threads or ire's are holding references to the irb,
1262 * i.e., irb_nire == 0,
1263 * - there are no active ire's in the bucket, i.e., irb_ire_cnt == 0
1264 */
1265 typedef struct irb {
1266 struct ire_s *irb_ire; /* First ire in this bucket */
1267 /* Should be first in this struct */
1268 krwlock_t irb_lock; /* Protect this bucket */
1269 uint_t irb_refcnt; /* Protected by irb_lock */
1270 uchar_t irb_marks; /* CONDEMNED ires in this bucket ? */
1271 #define IRB_MARK_CONDEMNED 0x0001 /* Contains some IRE_IS_CONDEMNED */
1272 #define IRB_MARK_DYNAMIC 0x0002 /* Dynamically allocated */
1273 /* Once IPv6 uses radix then IRB_MARK_DYNAMIC will be always be set */
1274 uint_t irb_ire_cnt; /* Num of active IRE in this bucket */
1275 int irb_nire; /* Num of ftable ire's that ref irb */
1276 ip_stack_t *irb_ipst; /* Does not have a netstack_hold */
1277 } irb_t;
1278
1279 /*
1280 * This is the structure used to store the multicast physical addresses
1281 * that an interface has joined.
1282 * The refcnt keeps track of the number of multicast IP addresses mapping
1283 * to a physical multicast address.
1284 */
1285 typedef struct multiphysaddr_s {
1286 struct multiphysaddr_s *mpa_next;
1287 char mpa_addr[IP_MAX_HW_LEN];
1288 int mpa_refcnt;
1289 } multiphysaddr_t;
1290
1291 #define IRB2RT(irb) (rt_t *)((caddr_t)(irb) - offsetof(rt_t, rt_irb))
1292
1293 /* Forward declarations */
1294 struct dce_s;
1295 typedef struct dce_s dce_t;
1296 struct ire_s;
1297 typedef struct ire_s ire_t;
1298 struct ncec_s;
1299 typedef struct ncec_s ncec_t;
1300 struct nce_s;
1301 typedef struct nce_s nce_t;
1302 struct ip_recv_attr_s;
1303 typedef struct ip_recv_attr_s ip_recv_attr_t;
1304 struct ip_xmit_attr_s;
1305 typedef struct ip_xmit_attr_s ip_xmit_attr_t;
1306
1307 struct tsol_ire_gw_secattr_s;
1308 typedef struct tsol_ire_gw_secattr_s tsol_ire_gw_secattr_t;
1309
1310 /*
1311 * This is a structure for a one-element route cache that is passed
1312 * by reference between ip_input and ill_inputfn.
1313 */
1314 typedef struct {
1315 ire_t *rtc_ire;
1316 ipaddr_t rtc_ipaddr;
1317 in6_addr_t rtc_ip6addr;
1318 } rtc_t;
1319
1320 /*
1321 * Note: Temporarily use 64 bits, and will probably go back to 32 bits after
1322 * more cleanup work is done.
1323 */
1324 typedef uint64_t iaflags_t;
1325
1326 /* The ill input function pointer type */
1327 typedef void (*pfillinput_t)(mblk_t *, void *, void *, ip_recv_attr_t *,
1328 rtc_t *);
1329
1330 /* The ire receive function pointer type */
1331 typedef void (*pfirerecv_t)(ire_t *, mblk_t *, void *, ip_recv_attr_t *);
1332
1333 /* The ire send and postfrag function pointer types */
1334 typedef int (*pfiresend_t)(ire_t *, mblk_t *, void *,
1335 ip_xmit_attr_t *, uint32_t *);
1336 typedef int (*pfirepostfrag_t)(mblk_t *, nce_t *, iaflags_t, uint_t, uint32_t,
1337 zoneid_t, zoneid_t, uintptr_t *);
1338
1339
1340 #define IP_V4_G_HEAD 0
1341 #define IP_V6_G_HEAD 1
1342
1343 #define MAX_G_HEADS 2
1344
1345 /*
1346 * unpadded ill_if structure
1347 */
1348 struct _ill_if_s_ {
1349 union ill_if_u *illif_next;
1350 union ill_if_u *illif_prev;
1351 avl_tree_t illif_avl_by_ppa; /* AVL tree sorted on ppa */
1352 vmem_t *illif_ppa_arena; /* ppa index space */
1353 uint16_t illif_mcast_v1; /* hints for */
1354 uint16_t illif_mcast_v2; /* [igmp|mld]_slowtimo */
1355 int illif_name_len; /* name length */
1356 char illif_name[LIFNAMSIZ]; /* name of interface type */
1357 };
1358
1359 /* cache aligned ill_if structure */
1360 typedef union ill_if_u {
1361 struct _ill_if_s_ ill_if_s;
1362 char illif_filler[CACHE_ALIGN(_ill_if_s_)];
1363 } ill_if_t;
1364
1365 #define illif_next ill_if_s.illif_next
1366 #define illif_prev ill_if_s.illif_prev
1367 #define illif_avl_by_ppa ill_if_s.illif_avl_by_ppa
1368 #define illif_ppa_arena ill_if_s.illif_ppa_arena
1369 #define illif_mcast_v1 ill_if_s.illif_mcast_v1
1370 #define illif_mcast_v2 ill_if_s.illif_mcast_v2
1371 #define illif_name ill_if_s.illif_name
1372 #define illif_name_len ill_if_s.illif_name_len
1373
1374 typedef struct ill_walk_context_s {
1375 int ctx_current_list; /* current list being searched */
1376 int ctx_last_list; /* last list to search */
1377 } ill_walk_context_t;
1378
1379 /*
1380 * ill_g_heads structure, one for IPV4 and one for IPV6
1381 */
1382 struct _ill_g_head_s_ {
1383 ill_if_t *ill_g_list_head;
1384 ill_if_t *ill_g_list_tail;
1385 };
1386
1387 typedef union ill_g_head_u {
1388 struct _ill_g_head_s_ ill_g_head_s;
1389 char ill_g_head_filler[CACHE_ALIGN(_ill_g_head_s_)];
1390 } ill_g_head_t;
1391
1392 #define ill_g_list_head ill_g_head_s.ill_g_list_head
1393 #define ill_g_list_tail ill_g_head_s.ill_g_list_tail
1394
1395 #define IP_V4_ILL_G_LIST(ipst) \
1396 (ipst)->ips_ill_g_heads[IP_V4_G_HEAD].ill_g_list_head
1397 #define IP_V6_ILL_G_LIST(ipst) \
1398 (ipst)->ips_ill_g_heads[IP_V6_G_HEAD].ill_g_list_head
1399 #define IP_VX_ILL_G_LIST(i, ipst) \
1400 (ipst)->ips_ill_g_heads[i].ill_g_list_head
1401
1402 #define ILL_START_WALK_V4(ctx_ptr, ipst) \
1403 ill_first(IP_V4_G_HEAD, IP_V4_G_HEAD, ctx_ptr, ipst)
1404 #define ILL_START_WALK_V6(ctx_ptr, ipst) \
1405 ill_first(IP_V6_G_HEAD, IP_V6_G_HEAD, ctx_ptr, ipst)
1406 #define ILL_START_WALK_ALL(ctx_ptr, ipst) \
1407 ill_first(MAX_G_HEADS, MAX_G_HEADS, ctx_ptr, ipst)
1408
1409 /*
1410 * Capabilities, possible flags for ill_capabilities.
1411 */
1412 #define ILL_CAPAB_LSO 0x04 /* Large Send Offload */
1413 #define ILL_CAPAB_HCKSUM 0x08 /* Hardware checksumming */
1414 #define ILL_CAPAB_ZEROCOPY 0x10 /* Zero-copy */
1415 #define ILL_CAPAB_DLD 0x20 /* DLD capabilities */
1416 #define ILL_CAPAB_DLD_POLL 0x40 /* Polling */
1417 #define ILL_CAPAB_DLD_DIRECT 0x80 /* Direct function call */
1418 #define ILL_CAPAB_DLD_IPCHECK 0x100 /* Check if IPs are permitted */
1419
1420 /*
1421 * Per-ill Hardware Checksumming capbilities.
1422 */
1423 typedef struct ill_hcksum_capab_s ill_hcksum_capab_t;
1424
1425 /*
1426 * Per-ill Zero-copy capabilities.
1427 */
1428 typedef struct ill_zerocopy_capab_s ill_zerocopy_capab_t;
1429
1430 /*
1431 * DLD capbilities.
1432 */
1433 typedef struct ill_dld_capab_s ill_dld_capab_t;
1434
1435 /*
1436 * Per-ill polling resource map.
1437 */
1438 typedef struct ill_rx_ring ill_rx_ring_t;
1439
1440 /*
1441 * Per-ill Large Send Offload capabilities.
1442 */
1443 typedef struct ill_lso_capab_s ill_lso_capab_t;
1444
1445 /* The following are ill_state_flags */
1446 #define ILL_LL_SUBNET_PENDING 0x01 /* Waiting for DL_INFO_ACK from drv */
1447 #define ILL_CONDEMNED 0x02 /* No more new ref's to the ILL */
1448 #define ILL_DL_UNBIND_IN_PROGRESS 0x04 /* UNBIND_REQ is sent */
1449 /*
1450 * ILL_DOWN_IN_PROGRESS is set to ensure the following:
1451 * - no packets are sent to the driver after the DL_UNBIND_REQ is sent,
1452 * - no longstanding references will be acquired on objects that are being
1453 * brought down.
1454 */
1455 #define ILL_DOWN_IN_PROGRESS 0x08
1456
1457 /* Is this an ILL whose source address is used by other ILL's ? */
1458 #define IS_USESRC_ILL(ill) \
1459 (((ill)->ill_usesrc_ifindex == 0) && \
1460 ((ill)->ill_usesrc_grp_next != NULL))
1461
1462 /* Is this a client/consumer of the usesrc ILL ? */
1463 #define IS_USESRC_CLI_ILL(ill) \
1464 (((ill)->ill_usesrc_ifindex != 0) && \
1465 ((ill)->ill_usesrc_grp_next != NULL))
1466
1467 /* Is this an virtual network interface (vni) ILL ? */
1468 #define IS_VNI(ill) \
1469 (((ill)->ill_phyint->phyint_flags & (PHYI_LOOPBACK|PHYI_VIRTUAL)) == \
1470 PHYI_VIRTUAL)
1471
1472 /* Is this a loopback ILL? */
1473 #define IS_LOOPBACK(ill) \
1474 ((ill)->ill_phyint->phyint_flags & PHYI_LOOPBACK)
1475
1476 /* Is this an IPMP meta-interface ILL? */
1477 #define IS_IPMP(ill) \
1478 ((ill)->ill_phyint->phyint_flags & PHYI_IPMP)
1479
1480 /* Is this ILL under an IPMP meta-interface? (aka "in a group?") */
1481 #define IS_UNDER_IPMP(ill) \
1482 ((ill)->ill_grp != NULL && !IS_IPMP(ill))
1483
1484 /* Is ill1 in the same illgrp as ill2? */
1485 #define IS_IN_SAME_ILLGRP(ill1, ill2) \
1486 ((ill1)->ill_grp != NULL && ((ill1)->ill_grp == (ill2)->ill_grp))
1487
1488 /* Is ill1 on the same LAN as ill2? */
1489 #define IS_ON_SAME_LAN(ill1, ill2) \
1490 ((ill1) == (ill2) || IS_IN_SAME_ILLGRP(ill1, ill2))
1491
1492 #define ILL_OTHER(ill) \
1493 ((ill)->ill_isv6 ? (ill)->ill_phyint->phyint_illv4 : \
1494 (ill)->ill_phyint->phyint_illv6)
1495
1496 /*
1497 * IPMP group ILL state structure -- up to two per IPMP group (V4 and V6).
1498 * Created when the V4 and/or V6 IPMP meta-interface is I_PLINK'd. It is
1499 * guaranteed to persist while there are interfaces of that type in the group.
1500 * In general, most fields are accessed outside of the IPSQ (e.g., in the
1501 * datapath), and thus use locks in addition to the IPSQ for protection.
1502 *
1503 * synchronization: read write
1504 *
1505 * ig_if ipsq or ill_g_lock ipsq and ill_g_lock
1506 * ig_actif ipsq or ipmp_lock ipsq and ipmp_lock
1507 * ig_nactif ipsq or ipmp_lock ipsq and ipmp_lock
1508 * ig_next_ill ipsq or ipmp_lock ipsq and ipmp_lock
1509 * ig_ipmp_ill write once write once
1510 * ig_cast_ill ipsq or ipmp_lock ipsq and ipmp_lock
1511 * ig_arpent ipsq ipsq
1512 * ig_mtu ipsq ipsq
1513 * ig_mc_mtu ipsq ipsq
1514 */
1515 typedef struct ipmp_illgrp_s {
1516 list_t ig_if; /* list of all interfaces */
1517 list_t ig_actif; /* list of active interfaces */
1518 uint_t ig_nactif; /* number of active interfaces */
1519 struct ill_s *ig_next_ill; /* next active interface to use */
1520 struct ill_s *ig_ipmp_ill; /* backpointer to IPMP meta-interface */
1521 struct ill_s *ig_cast_ill; /* nominated ill for multi/broadcast */
1522 list_t ig_arpent; /* list of ARP entries */
1523 uint_t ig_mtu; /* ig_ipmp_ill->ill_mtu */
1524 uint_t ig_mc_mtu; /* ig_ipmp_ill->ill_mc_mtu */
1525 } ipmp_illgrp_t;
1526
1527 /*
1528 * IPMP group state structure -- one per IPMP group. Created when the
1529 * IPMP meta-interface is plumbed; it is guaranteed to persist while there
1530 * are interfaces in it.
1531 *
1532 * ipmp_grp_t synchronization: read write
1533 *
1534 * gr_name ipmp_lock ipmp_lock
1535 * gr_ifname write once write once
1536 * gr_mactype ipmp_lock ipmp_lock
1537 * gr_phyint write once write once
1538 * gr_nif ipmp_lock ipmp_lock
1539 * gr_nactif ipsq ipsq
1540 * gr_v4 ipmp_lock ipmp_lock
1541 * gr_v6 ipmp_lock ipmp_lock
1542 * gr_nv4 ipmp_lock ipmp_lock
1543 * gr_nv6 ipmp_lock ipmp_lock
1544 * gr_pendv4 ipmp_lock ipmp_lock
1545 * gr_pendv6 ipmp_lock ipmp_lock
1546 * gr_linkdownmp ipsq ipsq
1547 * gr_ksp ipmp_lock ipmp_lock
1548 * gr_kstats0 atomic atomic
1549 */
1550 typedef struct ipmp_grp_s {
1551 char gr_name[LIFGRNAMSIZ]; /* group name */
1552 char gr_ifname[LIFNAMSIZ]; /* interface name */
1553 t_uscalar_t gr_mactype; /* DLPI mactype of group */
1554 phyint_t *gr_phyint; /* IPMP group phyint */
1555 uint_t gr_nif; /* number of interfaces in group */
1556 uint_t gr_nactif; /* number of active interfaces */
1557 ipmp_illgrp_t *gr_v4; /* V4 group information */
1558 ipmp_illgrp_t *gr_v6; /* V6 group information */
1559 uint_t gr_nv4; /* number of ills in V4 group */
1560 uint_t gr_nv6; /* number of ills in V6 group */
1561 uint_t gr_pendv4; /* number of pending ills in V4 group */
1562 uint_t gr_pendv6; /* number of pending ills in V6 group */
1563 mblk_t *gr_linkdownmp; /* message used to bring link down */
1564 kstat_t *gr_ksp; /* group kstat pointer */
1565 uint64_t gr_kstats0[IPMP_KSTAT_MAX]; /* baseline group kstats */
1566 } ipmp_grp_t;
1567
1568 /*
1569 * IPMP ARP entry -- one per SIOCS*ARP entry tied to the group. Used to keep
1570 * ARP up-to-date as the active set of interfaces in the group changes.
1571 */
1572 typedef struct ipmp_arpent_s {
1573 ipaddr_t ia_ipaddr; /* IP address for this entry */
1574 boolean_t ia_proxyarp; /* proxy ARP entry? */
1575 boolean_t ia_notified; /* ARP notified about this entry? */
1576 list_node_t ia_node; /* next ARP entry in list */
1577 uint16_t ia_flags; /* nce_flags for the address */
1578 size_t ia_lladdr_len;
1579 uchar_t *ia_lladdr;
1580 } ipmp_arpent_t;
1581
1582 struct arl_s;
1583
1584 /*
1585 * Per-ill capabilities.
1586 */
1587 struct ill_hcksum_capab_s {
1588 uint_t ill_hcksum_version; /* interface version */
1589 uint_t ill_hcksum_txflags; /* capabilities on transmit */
1590 };
1591
1592 struct ill_zerocopy_capab_s {
1593 uint_t ill_zerocopy_version; /* interface version */
1594 uint_t ill_zerocopy_flags; /* capabilities */
1595 };
1596
1597 struct ill_lso_capab_s {
1598 uint_t ill_lso_flags; /* capabilities */
1599 uint_t ill_lso_max; /* maximum size of payload */
1600 };
1601
1602 /*
1603 * IP Lower level Structure.
1604 * Instance data structure in ip_open when there is a device below us.
1605 */
1606 typedef struct ill_s {
1607 pfillinput_t ill_inputfn; /* Fast input function selector */
1608 ill_if_t *ill_ifptr; /* pointer to interface type */
1609 queue_t *ill_rq; /* Read queue. */
1610 queue_t *ill_wq; /* Write queue. */
1611
1612 int ill_error; /* Error value sent up by device. */
1613
1614 ipif_t *ill_ipif; /* Interface chain for this ILL. */
1615
1616 uint_t ill_ipif_up_count; /* Number of IPIFs currently up. */
1617 uint_t ill_max_frag; /* Max IDU from DLPI. */
1618 uint_t ill_current_frag; /* Current IDU from DLPI. */
1619 uint_t ill_mtu; /* User-specified MTU; SIOCSLIFMTU */
1620 uint_t ill_mc_mtu; /* MTU for multi/broadcast */
1621 uint_t ill_metric; /* BSD if metric, for compatibility. */
1622 char *ill_name; /* Our name. */
1623 uint_t ill_ipif_dup_count; /* Number of duplicate addresses. */
1624 uint_t ill_name_length; /* Name length, incl. terminator. */
1625 uint_t ill_net_type; /* IRE_IF_RESOLVER/IRE_IF_NORESOLVER. */
1626 /*
1627 * Physical Point of Attachment num. If DLPI style 1 provider
1628 * then this is derived from the devname.
1629 */
1630 uint_t ill_ppa;
1631 t_uscalar_t ill_sap;
1632 t_scalar_t ill_sap_length; /* Including sign (for position) */
1633 uint_t ill_phys_addr_length; /* Excluding the sap. */
1634 uint_t ill_bcast_addr_length; /* Only set when the DL provider */
1635 /* supports broadcast. */
1636 t_uscalar_t ill_mactype;
1637 uint8_t *ill_frag_ptr; /* Reassembly state. */
1638 timeout_id_t ill_frag_timer_id; /* timeout id for the frag timer */
1639 ipfb_t *ill_frag_hash_tbl; /* Fragment hash list head. */
1640
1641 krwlock_t ill_mcast_lock; /* Protects multicast state */
1642 kmutex_t ill_mcast_serializer; /* Serialize across ilg and ilm state */
1643 ilm_t *ill_ilm; /* Multicast membership for ill */
1644 uint_t ill_global_timer; /* for IGMPv3/MLDv2 general queries */
1645 int ill_mcast_type; /* type of router which is querier */
1646 /* on this interface */
1647 uint16_t ill_mcast_v1_time; /* # slow timeouts since last v1 qry */
1648 uint16_t ill_mcast_v2_time; /* # slow timeouts since last v2 qry */
1649 uint8_t ill_mcast_v1_tset; /* 1 => timer is set; 0 => not set */
1650 uint8_t ill_mcast_v2_tset; /* 1 => timer is set; 0 => not set */
1651
1652 uint8_t ill_mcast_rv; /* IGMPv3/MLDv2 robustness variable */
1653 int ill_mcast_qi; /* IGMPv3/MLDv2 query interval var */
1654
1655 /*
1656 * All non-NULL cells between 'ill_first_mp_to_free' and
1657 * 'ill_last_mp_to_free' are freed in ill_delete.
1658 */
1659 #define ill_first_mp_to_free ill_bcast_mp
1660 mblk_t *ill_bcast_mp; /* DLPI header for broadcasts. */
1661 mblk_t *ill_unbind_mp; /* unbind mp from ill_dl_up() */
1662 mblk_t *ill_promiscoff_mp; /* for ill_leave_allmulti() */
1663 mblk_t *ill_dlpi_deferred; /* b_next chain of control messages */
1664 mblk_t *ill_dest_addr_mp; /* mblk which holds ill_dest_addr */
1665 mblk_t *ill_replumb_mp; /* replumb mp from ill_replumb() */
1666 mblk_t *ill_phys_addr_mp; /* mblk which holds ill_phys_addr */
1667 mblk_t *ill_mcast_deferred; /* b_next chain of IGMP/MLD packets */
1668 #define ill_last_mp_to_free ill_mcast_deferred
1669
1670 cred_t *ill_credp; /* opener's credentials */
1671 uint8_t *ill_phys_addr; /* ill_phys_addr_mp->b_rptr + off */
1672 uint8_t *ill_dest_addr; /* ill_dest_addr_mp->b_rptr + off */
1673
1674 uint_t ill_state_flags; /* see ILL_* flags above */
1675
1676 /* Following bit fields protected by ipsq_t */
1677 uint_t
1678 ill_needs_attach : 1,
1679 ill_reserved : 1,
1680 ill_isv6 : 1,
1681 ill_dlpi_style_set : 1,
1682
1683 ill_ifname_pending : 1,
1684 ill_logical_down : 1,
1685 ill_dl_up : 1,
1686 ill_up_ipifs : 1,
1687
1688 ill_note_link : 1, /* supports link-up notification */
1689 ill_capab_reneg : 1, /* capability renegotiation to be done */
1690 ill_dld_capab_inprog : 1, /* direct dld capab call in prog */
1691 ill_need_recover_multicast : 1,
1692
1693 ill_replumbing : 1,
1694 ill_arl_dlpi_pending : 1,
1695 ill_grp_pending : 1,
1696
1697 ill_pad_to_bit_31 : 17;
1698
1699 /* Following bit fields protected by ill_lock */
1700 uint_t
1701 ill_fragtimer_executing : 1,
1702 ill_fragtimer_needrestart : 1,
1703 ill_manual_token : 1, /* system won't override ill_token */
1704 /*
1705 * ill_manual_linklocal : system will not change the
1706 * linklocal whenever ill_token changes.
1707 */
1708 ill_manual_linklocal : 1,
1709
1710 ill_manual_dst_linklocal : 1, /* same for pt-pt dst linklocal */
1711
1712 ill_mcast_ncec_cleanup : 1, /* Reaping mcast ncecs. */
1713 ill_pad_bit_31 : 26;
1714
1715 /*
1716 * Used in SIOCSIFMUXID and SIOCGIFMUXID for 'ifconfig unplumb'.
1717 */
1718 int ill_muxid; /* muxid returned from plink */
1719
1720 /* Used for IP frag reassembly throttling on a per ILL basis. */
1721 uint_t ill_ipf_gen; /* Generation of next fragment queue */
1722 uint_t ill_frag_count; /* Count of all reassembly mblk bytes */
1723 uint_t ill_frag_free_num_pkts; /* num of fragmented packets to free */
1724 clock_t ill_last_frag_clean_time; /* time when frag's were pruned */
1725 int ill_type; /* From <net/if_types.h> */
1726 uint_t ill_dlpi_multicast_state; /* See below IDS_* */
1727 uint_t ill_dlpi_fastpath_state; /* See below IDS_* */
1728
1729 /*
1730 * Capabilities related fields.
1731 */
1732 uint_t ill_dlpi_capab_state; /* State of capability query, IDCS_* */
1733 uint_t ill_capab_pending_cnt;
1734 uint64_t ill_capabilities; /* Enabled capabilities, ILL_CAPAB_* */
1735 ill_hcksum_capab_t *ill_hcksum_capab; /* H/W cksumming capabilities */
1736 ill_zerocopy_capab_t *ill_zerocopy_capab; /* Zero-copy capabilities */
1737 ill_dld_capab_t *ill_dld_capab; /* DLD capabilities */
1738 ill_lso_capab_t *ill_lso_capab; /* Large Segment Offload capabilities */
1739 mblk_t *ill_capab_reset_mp; /* Preallocated mblk for capab reset */
1740
1741 uint8_t ill_max_hops; /* Maximum hops for any logical interface */
1742 uint_t ill_user_mtu; /* User-specified MTU via SIOCSLIFLNKINFO */
1743 uint32_t ill_reachable_time; /* Value for ND algorithm in msec */
1744 uint32_t ill_reachable_retrans_time; /* Value for ND algorithm msec */
1745 uint_t ill_max_buf; /* Max # of req to buffer for ND */
1746 in6_addr_t ill_token; /* IPv6 interface id */
1747 in6_addr_t ill_dest_token; /* Destination IPv6 interface id */
1748 uint_t ill_token_length;
1749 uint32_t ill_xmit_count; /* ndp max multicast xmits */
1750 mib2_ipIfStatsEntry_t *ill_ip_mib; /* ver indep. interface mib */
1751 mib2_ipv6IfIcmpEntry_t *ill_icmp6_mib; /* Per interface mib */
1752
1753 phyint_t *ill_phyint;
1754 uint64_t ill_flags;
1755
1756 kmutex_t ill_lock; /* Please see table below */
1757 /*
1758 * The ill_nd_lla* fields handle the link layer address option
1759 * from neighbor discovery. This is used for external IPv6
1760 * address resolution.
1761 */
1762 mblk_t *ill_nd_lla_mp; /* mblk which holds ill_nd_lla */
1763 uint8_t *ill_nd_lla; /* Link Layer Address */
1764 uint_t ill_nd_lla_len; /* Link Layer Address length */
1765 /*
1766 * We have 4 phys_addr_req's sent down. This field keeps track
1767 * of which one is pending.
1768 */
1769 t_uscalar_t ill_phys_addr_pend; /* which dl_phys_addr_req pending */
1770 /*
1771 * Used to save errors that occur during plumbing
1772 */
1773 uint_t ill_ifname_pending_err;
1774 /*
1775 * Used to save errors that occur during binding
1776 */
1777 uint_t ill_dl_bind_err;
1778 avl_node_t ill_avl_byppa; /* avl node based on ppa */
1779 uint_t ill_mcast_nces; /* Number of NCEs that are multicast. */
1780 list_t ill_nce; /* pointer to nce_s list */
1781 uint_t ill_refcnt; /* active refcnt by threads */
1782 uint_t ill_ire_cnt; /* ires associated with this ill */
1783 kcondvar_t ill_cv;
1784 uint_t ill_ncec_cnt; /* ncecs associated with this ill */
1785 uint_t ill_nce_cnt; /* nces associated with this ill */
1786 uint_t ill_waiters; /* threads waiting in ipsq_enter */
1787 /*
1788 * Contains the upper read queue pointer of the module immediately
1789 * beneath IP. This field allows IP to validate sub-capability
1790 * acknowledgments coming up from downstream.
1791 */
1792 queue_t *ill_lmod_rq; /* read queue pointer of module below */
1793 uint_t ill_lmod_cnt; /* number of modules beneath IP */
1794 ip_m_t *ill_media; /* media specific params/functions */
1795 t_uscalar_t ill_dlpi_pending; /* Last DLPI primitive issued */
1796 uint_t ill_usesrc_ifindex; /* use src addr from this ILL */
1797 struct ill_s *ill_usesrc_grp_next; /* Next ILL in the usesrc group */
1798 boolean_t ill_trace_disable; /* True when alloc fails */
1799 zoneid_t ill_zoneid;
1800 ip_stack_t *ill_ipst; /* Corresponds to a netstack_hold */
1801 uint32_t ill_dhcpinit; /* IP_DHCPINIT_IFs for ill */
1802 void *ill_flownotify_mh; /* Tx flow ctl, mac cb handle */
1803 uint_t ill_ilm_cnt; /* ilms referencing this ill */
1804 uint_t ill_ipallmulti_cnt; /* ip_join_allmulti() calls */
1805 ilm_t *ill_ipallmulti_ilm;
1806
1807 mblk_t *ill_saved_ire_mp; /* Allocated for each extra IRE */
1808 /* with ire_ill set so they can */
1809 /* survive the ill going down and up. */
1810 kmutex_t ill_saved_ire_lock; /* Protects ill_saved_ire_mp, cnt */
1811 uint_t ill_saved_ire_cnt; /* # entries */
1812 struct arl_ill_common_s *ill_common;
1813 ire_t *ill_ire_multicast; /* IRE_MULTICAST for ill */
1814 clock_t ill_defend_start; /* start of 1 hour period */
1815 uint_t ill_defend_count; /* # of announce/defends per ill */
1816 /*
1817 * IPMP fields.
1818 */
1819 ipmp_illgrp_t *ill_grp; /* IPMP group information */
1820 list_node_t ill_actnode; /* next active ill in group */
1821 list_node_t ill_grpnode; /* next ill in group */
1822 ipif_t *ill_src_ipif; /* source address selection rotor */
1823 ipif_t *ill_move_ipif; /* ipif awaiting move to new ill */
1824 boolean_t ill_nom_cast; /* nominated for mcast/bcast */
1825 uint_t ill_bound_cnt; /* # of data addresses bound to ill */
1826 ipif_t *ill_bound_ipif; /* ipif chain bound to ill */
1827 timeout_id_t ill_refresh_tid; /* ill refresh retry timeout id */
1828
1829 uint32_t ill_mrouter_cnt; /* mrouter allmulti joins */
1830 uint32_t ill_allowed_ips_cnt;
1831 in6_addr_t *ill_allowed_ips;
1832
1833 /* list of multicast physical addresses joined on this ill */
1834 multiphysaddr_t *ill_mphysaddr_list;
1835 } ill_t;
1836
1837 /*
1838 * ILL_FREE_OK() means that there are no incoming pointer references
1839 * to the ill.
1840 */
1841 #define ILL_FREE_OK(ill) \
1842 ((ill)->ill_ire_cnt == 0 && (ill)->ill_ilm_cnt == 0 && \
1843 (ill)->ill_ncec_cnt == 0 && (ill)->ill_nce_cnt == 0)
1844
1845 /*
1846 * An ipif/ill can be marked down only when the ire and ncec references
1847 * to that ipif/ill goes to zero. ILL_DOWN_OK() is a necessary condition
1848 * quiescence checks. See comments above IPIF_DOWN_OK for details
1849 * on why ires and nces are selectively considered for this macro.
1850 */
1851 #define ILL_DOWN_OK(ill) \
1852 (ill->ill_ire_cnt == 0 && ill->ill_ncec_cnt == 0 && \
1853 ill->ill_nce_cnt == 0)
1854
1855 /*
1856 * The following table lists the protection levels of the various members
1857 * of the ill_t. Same notation as that used for ipif_t above is used.
1858 *
1859 * Write Read
1860 *
1861 * ill_ifptr ill_g_lock + s Write once
1862 * ill_rq ipsq Write once
1863 * ill_wq ipsq Write once
1864 *
1865 * ill_error ipsq None
1866 * ill_ipif ill_g_lock + ipsq ill_g_lock OR ipsq
1867 * ill_ipif_up_count ill_lock + ipsq ill_lock OR ipsq
1868 * ill_max_frag ill_lock ill_lock
1869 * ill_current_frag ill_lock ill_lock
1870 *
1871 * ill_name ill_g_lock + ipsq Write once
1872 * ill_name_length ill_g_lock + ipsq Write once
1873 * ill_ndd_name ipsq Write once
1874 * ill_net_type ipsq Write once
1875 * ill_ppa ill_g_lock + ipsq Write once
1876 * ill_sap ipsq + down ill Write once
1877 * ill_sap_length ipsq + down ill Write once
1878 * ill_phys_addr_length ipsq + down ill Write once
1879 *
1880 * ill_bcast_addr_length ipsq ipsq
1881 * ill_mactype ipsq ipsq
1882 * ill_frag_ptr ipsq ipsq
1883 *
1884 * ill_frag_timer_id ill_lock ill_lock
1885 * ill_frag_hash_tbl ipsq up ill
1886 * ill_ilm ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1887 * ill_global_timer ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1888 * ill_mcast_type ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1889 * ill_mcast_v1_time ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1890 * ill_mcast_v2_time ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1891 * ill_mcast_v1_tset ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1892 * ill_mcast_v2_tset ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1893 * ill_mcast_rv ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1894 * ill_mcast_qi ill_mcast_lock(WRITER) ill_mcast_lock(READER)
1895 *
1896 * ill_down_mp ipsq ipsq
1897 * ill_dlpi_deferred ill_lock ill_lock
1898 * ill_dlpi_pending ipsq + ill_lock ipsq or ill_lock or
1899 * absence of ipsq writer.
1900 * ill_phys_addr_mp ipsq + down ill only when ill is up
1901 * ill_mcast_deferred ill_lock ill_lock
1902 * ill_phys_addr ipsq + down ill only when ill is up
1903 * ill_dest_addr_mp ipsq + down ill only when ill is up
1904 * ill_dest_addr ipsq + down ill only when ill is up
1905 *
1906 * ill_state_flags ill_lock ill_lock
1907 * exclusive bit flags ipsq_t ipsq_t
1908 * shared bit flags ill_lock ill_lock
1909 *
1910 * ill_muxid ipsq Not atomic
1911 *
1912 * ill_ipf_gen Not atomic
1913 * ill_frag_count atomics atomics
1914 * ill_type ipsq + down ill only when ill is up
1915 * ill_dlpi_multicast_state ill_lock ill_lock
1916 * ill_dlpi_fastpath_state ill_lock ill_lock
1917 * ill_dlpi_capab_state ipsq ipsq
1918 * ill_max_hops ipsq Not atomic
1919 *
1920 * ill_mtu ill_lock None
1921 * ill_mc_mtu ill_lock None
1922 *
1923 * ill_user_mtu ipsq + ill_lock ill_lock
1924 * ill_reachable_time ipsq + ill_lock ill_lock
1925 * ill_reachable_retrans_time ipsq + ill_lock ill_lock
1926 * ill_max_buf ipsq + ill_lock ill_lock
1927 *
1928 * Next 2 fields need ill_lock because of the get ioctls. They should not
1929 * report partially updated results without executing in the ipsq.
1930 * ill_token ipsq + ill_lock ill_lock
1931 * ill_token_length ipsq + ill_lock ill_lock
1932 * ill_dest_token ipsq + down ill only when ill is up
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 *
1937 * ill_phyint ipsq, ill_g_lock, ill_lock Any of them
1938 * ill_flags ill_lock ill_lock
1939 * ill_nd_lla_mp ipsq + down ill only when ill is up
1940 * ill_nd_lla ipsq + down ill only when ill is up
1941 * ill_nd_lla_len ipsq + down ill only when ill is up
1942 * ill_phys_addr_pend ipsq + down ill only when ill is up
1943 * ill_ifname_pending_err ipsq ipsq
1944 * ill_dl_bind_err ipsq ipsq
1945 * ill_avl_byppa ipsq, ill_g_lock write once
1946 *
1947 * ill_fastpath_list ill_lock ill_lock
1948 * ill_refcnt ill_lock ill_lock
1949 * ill_ire_cnt ill_lock ill_lock
1950 * ill_cv ill_lock ill_lock
1951 * ill_mcast_nces ill_lock ill_lock
1952 * ill_ncec_cnt ill_lock ill_lock
1953 * ill_nce_cnt ill_lock ill_lock
1954 * ill_ilm_cnt ill_lock ill_lock
1955 * ill_src_ipif ill_g_lock ill_g_lock
1956 * ill_trace ill_lock ill_lock
1957 * ill_usesrc_grp_next ill_g_usesrc_lock ill_g_usesrc_lock
1958 * ill_dhcpinit atomics atomics
1959 * ill_flownotify_mh write once write once
1960 * ill_capab_pending_cnt ipsq ipsq
1961 * ill_ipallmulti_cnt ill_lock ill_lock
1962 * ill_ipallmulti_ilm ill_lock ill_lock
1963 * ill_saved_ire_mp ill_saved_ire_lock ill_saved_ire_lock
1964 * ill_saved_ire_cnt ill_saved_ire_lock ill_saved_ire_lock
1965 * ill_arl ??? ???
1966 * ill_ire_multicast ipsq + quiescent none
1967 * ill_bound_ipif ipsq ipsq
1968 * ill_actnode ipsq + ipmp_lock ipsq OR ipmp_lock
1969 * ill_grpnode ipsq + ill_g_lock ipsq OR ill_g_lock
1970 * ill_src_ipif ill_g_lock ill_g_lock
1971 * ill_move_ipif ipsq ipsq
1972 * ill_nom_cast ipsq ipsq OR advisory
1973 * ill_refresh_tid ill_lock ill_lock
1974 * ill_grp (for IPMP ill) write once write once
1975 * ill_grp (for underlying ill) ipsq + ill_g_lock ipsq OR ill_g_lock
1976 * ill_grp_pending ill_mcast_serializer ill_mcast_serializer
1977 * ill_mrouter_cnt atomics atomics
1978 * ill_mphysaddr_list ill_lock ill_lock
1979 *
1980 * NOTE: It's OK to make heuristic decisions on an underlying interface
1981 * by using IS_UNDER_IPMP() or comparing ill_grp's raw pointer value.
1982 */
1983
1984 /*
1985 * For ioctl restart mechanism see ip_reprocess_ioctl()
1986 */
1987 struct ip_ioctl_cmd_s;
1988
1989 typedef int (*ifunc_t)(ipif_t *, struct sockaddr_in *, queue_t *, mblk_t *,
1990 struct ip_ioctl_cmd_s *, void *);
1991
1992 typedef struct ip_ioctl_cmd_s {
1993 int ipi_cmd;
1994 size_t ipi_copyin_size;
1995 uint_t ipi_flags;
1996 uint_t ipi_cmd_type;
1997 ifunc_t ipi_func;
1998 ifunc_t ipi_func_restart;
1999 } ip_ioctl_cmd_t;
2000
2001 /*
2002 * ipi_cmd_type:
2003 *
2004 * IF_CMD 1 old style ifreq cmd
2005 * LIF_CMD 2 new style lifreq cmd
2006 * ARP_CMD 3 arpreq cmd
2007 * XARP_CMD 4 xarpreq cmd
2008 * MSFILT_CMD 5 multicast source filter cmd
2009 * MISC_CMD 6 misc cmd (not a more specific one above)
2010 */
2011
2012 enum { IF_CMD = 1, LIF_CMD, ARP_CMD, XARP_CMD, MSFILT_CMD, MISC_CMD };
2013
2014 #define IPI_DONTCARE 0 /* For ioctl encoded values that don't matter */
2015
2016 /* Flag values in ipi_flags */
2017 #define IPI_PRIV 0x1 /* Root only command */
2018 #define IPI_MODOK 0x2 /* Permitted on mod instance of IP */
2019 #define IPI_WR 0x4 /* Need to grab writer access */
2020 #define IPI_GET_CMD 0x8 /* branch to mi_copyout on success */
2021 /* unused 0x10 */
2022 #define IPI_NULL_BCONT 0x20 /* ioctl has not data and hence no b_cont */
2023
2024 extern ip_ioctl_cmd_t ip_ndx_ioctl_table[];
2025 extern ip_ioctl_cmd_t ip_misc_ioctl_table[];
2026 extern int ip_ndx_ioctl_count;
2027 extern int ip_misc_ioctl_count;
2028
2029 /* Passed down by ARP to IP during I_PLINK/I_PUNLINK */
2030 typedef struct ipmx_s {
2031 char ipmx_name[LIFNAMSIZ]; /* if name */
2032 uint_t
2033 ipmx_arpdev_stream : 1, /* This is the arp stream */
2034 ipmx_notused : 31;
2035 } ipmx_t;
2036
2037 /*
2038 * State for detecting if a driver supports certain features.
2039 * Support for DL_ENABMULTI_REQ uses ill_dlpi_multicast_state.
2040 * Support for DLPI M_DATA fastpath uses ill_dlpi_fastpath_state.
2041 */
2042 #define IDS_UNKNOWN 0 /* No DLPI request sent */
2043 #define IDS_INPROGRESS 1 /* DLPI request sent */
2044 #define IDS_OK 2 /* DLPI request completed successfully */
2045 #define IDS_FAILED 3 /* DLPI request failed */
2046
2047 /* Support for DL_CAPABILITY_REQ uses ill_dlpi_capab_state. */
2048 enum {
2049 IDCS_UNKNOWN,
2050 IDCS_PROBE_SENT,
2051 IDCS_OK,
2052 IDCS_RESET_SENT,
2053 IDCS_RENEG,
2054 IDCS_FAILED
2055 };
2056
2057 /* Extended NDP Management Structure */
2058 typedef struct ipndp_s {
2059 ndgetf_t ip_ndp_getf;
2060 ndsetf_t ip_ndp_setf;
2061 caddr_t ip_ndp_data;
2062 char *ip_ndp_name;
2063 } ipndp_t;
2064
2065 /* IXA Notification types */
2066 typedef enum {
2067 IXAN_LSO, /* LSO capability change */
2068 IXAN_PMTU, /* PMTU change */
2069 IXAN_ZCOPY /* ZEROCOPY capability change */
2070 } ixa_notify_type_t;
2071
2072 typedef uint_t ixa_notify_arg_t;
2073
2074 typedef void (*ixa_notify_t)(void *, ip_xmit_attr_t *ixa, ixa_notify_type_t,
2075 ixa_notify_arg_t);
2076
2077 /*
2078 * Attribute flags that are common to the transmit and receive attributes
2079 */
2080 #define IAF_IS_IPV4 0x80000000 /* ipsec_*_v4 */
2081 #define IAF_TRUSTED_ICMP 0x40000000 /* ipsec_*_icmp_loopback */
2082 #define IAF_NO_LOOP_ZONEID_SET 0x20000000 /* Zone that shouldn't have */
2083 /* a copy */
2084 #define IAF_LOOPBACK_COPY 0x10000000 /* For multi and broadcast */
2085
2086 #define IAF_MASK 0xf0000000 /* Flags that are common */
2087
2088 /*
2089 * Transmit side attributes used between the transport protocols and IP as
2090 * well as inside IP. It is also used to cache information in the conn_t i.e.
2091 * replaces conn_ire and the IPsec caching in the conn_t.
2092 */
2093 struct ip_xmit_attr_s {
2094 iaflags_t ixa_flags; /* IXAF_*. See below */
2095
2096 uint32_t ixa_free_flags; /* IXA_FREE_*. See below */
2097 uint32_t ixa_refcnt; /* Using atomics */
2098
2099 /*
2100 * Always initialized independently of ixa_flags settings.
2101 * Used by ip_xmit so we keep them up front for cache locality.
2102 */
2103 uint32_t ixa_xmit_hint; /* For ECMP and GLD TX ring fanout */
2104 uint_t ixa_pktlen; /* Always set. For frag and stats */
2105 zoneid_t ixa_zoneid; /* Assumed always set */
2106
2107 /* Always set for conn_ip_output(); might be stale */
2108 /*
2109 * Since TCP keeps the conn_t around past the process going away
2110 * we need to use the "notr" (e.g, ire_refhold_notr) for ixa_ire,
2111 * ixa_nce, and ixa_dce.
2112 */
2113 ire_t *ixa_ire; /* Forwarding table entry */
2114 uint_t ixa_ire_generation;
2115 nce_t *ixa_nce; /* Neighbor cache entry */
2116 dce_t *ixa_dce; /* Destination cache entry */
2117 uint_t ixa_dce_generation;
2118 uint_t ixa_src_generation; /* If IXAF_VERIFY_SOURCE */
2119
2120 uint32_t ixa_src_preferences; /* prefs for src addr select */
2121 uint32_t ixa_pmtu; /* IXAF_VERIFY_PMTU */
2122
2123 /* Set by ULP if IXAF_VERIFY_PMTU; otherwise set by IP */
2124 uint32_t ixa_fragsize;
2125
2126 int8_t ixa_use_min_mtu; /* IXAF_USE_MIN_MTU values */
2127
2128 pfirepostfrag_t ixa_postfragfn; /* Set internally in IP */
2129
2130 in6_addr_t ixa_nexthop_v6; /* IXAF_NEXTHOP_SET */
2131 #define ixa_nexthop_v4 V4_PART_OF_V6(ixa_nexthop_v6)
2132
2133 zoneid_t ixa_no_loop_zoneid; /* IXAF_NO_LOOP_ZONEID_SET */
2134
2135 uint_t ixa_scopeid; /* For IPv6 link-locals */
2136
2137 uint_t ixa_broadcast_ttl; /* IXAF_BROACAST_TTL_SET */
2138
2139 uint_t ixa_multicast_ttl; /* Assumed set for multicast */
2140 uint_t ixa_multicast_ifindex; /* Assumed set for multicast */
2141 ipaddr_t ixa_multicast_ifaddr; /* Assumed set for multicast */
2142
2143 int ixa_raw_cksum_offset; /* If IXAF_SET_RAW_CKSUM */
2144
2145 uint32_t ixa_ident; /* For IPv6 fragment header */
2146
2147 uint64_t ixa_conn_id; /* Used by DTrace */
2148 /*
2149 * Cached LSO information.
2150 */
2151 ill_lso_capab_t ixa_lso_capab; /* Valid when IXAF_LSO_CAPAB */
2152
2153 uint64_t ixa_ipsec_policy_gen; /* Generation from iph_gen */
2154 /*
2155 * The following IPsec fields are only initialized when
2156 * IXAF_IPSEC_SECURE is set. Otherwise they contain garbage.
2157 */
2158 ipsec_latch_t *ixa_ipsec_latch; /* Just the ids */
2159 struct ipsa_s *ixa_ipsec_ah_sa; /* Hard reference SA for AH */
2160 struct ipsa_s *ixa_ipsec_esp_sa; /* Hard reference SA for ESP */
2161 struct ipsec_policy_s *ixa_ipsec_policy; /* why are we here? */
2162 struct ipsec_action_s *ixa_ipsec_action; /* For reflected packets */
2163 ipsa_ref_t ixa_ipsec_ref[2]; /* Soft reference to SA */
2164 /* 0: ESP, 1: AH */
2165
2166 /*
2167 * The selectors here are potentially different than the SPD rule's
2168 * selectors, and we need to have both available for IKEv2.
2169 *
2170 * NOTE: "Source" and "Dest" are w.r.t. outbound datagrams. Ports can
2171 * be zero, and the protocol number is needed to make the ports
2172 * significant.
2173 */
2174 uint16_t ixa_ipsec_src_port; /* Source port number of d-gram. */
2175 uint16_t ixa_ipsec_dst_port; /* Destination port number of d-gram. */
2176 uint8_t ixa_ipsec_icmp_type; /* ICMP type of d-gram */
2177 uint8_t ixa_ipsec_icmp_code; /* ICMP code of d-gram */
2178
2179 sa_family_t ixa_ipsec_inaf; /* Inner address family */
2180 #define IXA_MAX_ADDRLEN 4 /* Max addr len. (in 32-bit words) */
2181 uint32_t ixa_ipsec_insrc[IXA_MAX_ADDRLEN]; /* Inner src address */
2182 uint32_t ixa_ipsec_indst[IXA_MAX_ADDRLEN]; /* Inner dest address */
2183 uint8_t ixa_ipsec_insrcpfx; /* Inner source prefix */
2184 uint8_t ixa_ipsec_indstpfx; /* Inner destination prefix */
2185
2186 uint8_t ixa_ipsec_proto; /* IP protocol number for d-gram. */
2187
2188 /* Always initialized independently of ixa_flags settings */
2189 uint_t ixa_ifindex; /* Assumed always set */
2190 uint16_t ixa_ip_hdr_length; /* Points to ULP header */
2191 uint8_t ixa_protocol; /* Protocol number for ULP cksum */
2192 ts_label_t *ixa_tsl; /* Always set. NULL if not TX */
2193 ip_stack_t *ixa_ipst; /* Always set */
2194 uint32_t ixa_extra_ident; /* Set if LSO */
2195 cred_t *ixa_cred; /* For getpeerucred */
2196 pid_t ixa_cpid; /* For getpeerucred */
2197
2198 #ifdef DEBUG
2199 kthread_t *ixa_curthread; /* For serialization assert */
2200 #endif
2201 squeue_t *ixa_sqp; /* Set from conn_sqp as a hint */
2202 uintptr_t ixa_cookie; /* cookie to use for tx flow control */
2203
2204 /*
2205 * Must be set by ULP if any of IXAF_VERIFY_LSO, IXAF_VERIFY_PMTU,
2206 * or IXAF_VERIFY_ZCOPY is set.
2207 */
2208 ixa_notify_t ixa_notify; /* Registered upcall notify function */
2209 void *ixa_notify_cookie; /* ULP cookie for ixa_notify */
2210
2211 uint_t ixa_tcpcleanup; /* Used by conn_ixa_cleanup */
2212 };
2213
2214 /*
2215 * Flags to indicate which transmit attributes are set.
2216 * Split into "xxx_SET" ones which indicate that the "xxx" field it set, and
2217 * single flags.
2218 */
2219 #define IXAF_REACH_CONF 0x00000001 /* Reachability confirmation */
2220 #define IXAF_BROADCAST_TTL_SET 0x00000002 /* ixa_broadcast_ttl valid */
2221 #define IXAF_SET_SOURCE 0x00000004 /* Replace if broadcast */
2222 #define IXAF_USE_MIN_MTU 0x00000008 /* IPV6_USE_MIN_MTU */
2223
2224 #define IXAF_DONTFRAG 0x00000010 /* IP*_DONTFRAG */
2225 #define IXAF_VERIFY_PMTU 0x00000020 /* ixa_pmtu/ixa_fragsize set */
2226 #define IXAF_PMTU_DISCOVERY 0x00000040 /* Create/use PMTU state */
2227 #define IXAF_MULTICAST_LOOP 0x00000080 /* IP_MULTICAST_LOOP */
2228
2229 #define IXAF_IPSEC_SECURE 0x00000100 /* Need IPsec processing */
2230 #define IXAF_UCRED_TSL 0x00000200 /* ixa_tsl from SCM_UCRED */
2231 #define IXAF_DONTROUTE 0x00000400 /* SO_DONTROUTE */
2232 #define IXAF_NO_IPSEC 0x00000800 /* Ignore policy */
2233
2234 #define IXAF_PMTU_TOO_SMALL 0x00001000 /* PMTU too small */
2235 #define IXAF_SET_ULP_CKSUM 0x00002000 /* Calculate ULP checksum */
2236 #define IXAF_VERIFY_SOURCE 0x00004000 /* Check that source is ok */
2237 #define IXAF_NEXTHOP_SET 0x00008000 /* ixa_nexthop set */
2238
2239 #define IXAF_PMTU_IPV4_DF 0x00010000 /* Set IPv4 DF */
2240 #define IXAF_NO_DEV_FLOW_CTL 0x00020000 /* Protocol needs no flow ctl */
2241 #define IXAF_NO_TTL_CHANGE 0x00040000 /* Internal to IP */
2242 #define IXAF_IPV6_ADD_FRAGHDR 0x00080000 /* Add fragment header */
2243
2244 #define IXAF_IPSEC_TUNNEL 0x00100000 /* Tunnel mode */
2245 #define IXAF_NO_PFHOOK 0x00200000 /* Skip xmit pfhook */
2246 #define IXAF_NO_TRACE 0x00400000 /* When back from ARP/ND */
2247 #define IXAF_SCOPEID_SET 0x00800000 /* ixa_scopeid set */
2248
2249 #define IXAF_MULTIRT_MULTICAST 0x01000000 /* MULTIRT for multicast */
2250 #define IXAF_NO_HW_CKSUM 0x02000000 /* Force software cksum */
2251 #define IXAF_SET_RAW_CKSUM 0x04000000 /* Use ixa_raw_cksum_offset */
2252 #define IXAF_IPSEC_GLOBAL_POLICY 0x08000000 /* Policy came from global */
2253
2254 /* Note the following uses bits 0x10000000 through 0x80000000 */
2255 #define IXAF_IS_IPV4 IAF_IS_IPV4
2256 #define IXAF_TRUSTED_ICMP IAF_TRUSTED_ICMP
2257 #define IXAF_NO_LOOP_ZONEID_SET IAF_NO_LOOP_ZONEID_SET
2258 #define IXAF_LOOPBACK_COPY IAF_LOOPBACK_COPY
2259
2260 /* Note: use the upper 32 bits */
2261 #define IXAF_VERIFY_LSO 0x100000000 /* Check LSO capability */
2262 #define IXAF_LSO_CAPAB 0x200000000 /* Capable of LSO */
2263 #define IXAF_VERIFY_ZCOPY 0x400000000 /* Check Zero Copy capability */
2264 #define IXAF_ZCOPY_CAPAB 0x800000000 /* Capable of ZEROCOPY */
2265
2266 /*
2267 * The normal flags for sending packets e.g., icmp errors
2268 */
2269 #define IXAF_BASIC_SIMPLE_V4 \
2270 (IXAF_SET_ULP_CKSUM | IXAF_IS_IPV4 | IXAF_VERIFY_SOURCE)
2271 #define IXAF_BASIC_SIMPLE_V6 (IXAF_SET_ULP_CKSUM | IXAF_VERIFY_SOURCE)
2272
2273 /*
2274 * Normally these fields do not have a hold. But in some cases they do, for
2275 * instance when we've gone through ip_*_attr_to/from_mblk.
2276 * We use ixa_free_flags to indicate that they have a hold and need to be
2277 * released on cleanup.
2278 */
2279 #define IXA_FREE_CRED 0x00000001 /* ixa_cred needs to be rele */
2280 #define IXA_FREE_TSL 0x00000002 /* ixa_tsl needs to be rele */
2281
2282 /*
2283 * Trivial state machine used to synchronize IXA cleanup for TCP connections.
2284 * See conn_ixa_cleanup().
2285 */
2286 #define IXATC_IDLE 0x00000000
2287 #define IXATC_INPROGRESS 0x00000001
2288 #define IXATC_COMPLETE 0x00000002
2289
2290 /*
2291 * Simplistic way to set the ixa_xmit_hint for locally generated traffic
2292 * and forwarded traffic. The shift amount are based on the size of the
2293 * structs to discard the low order bits which don't have much if any variation
2294 * (coloring in kmem_cache_alloc might provide some variation).
2295 *
2296 * Basing the locally generated hint on the address of the conn_t means that
2297 * the packets from the same socket/connection do not get reordered.
2298 * Basing the hint for forwarded traffic on the ill_ring_t means that
2299 * packets from the same NIC+ring are likely to use the same outbound ring
2300 * hence we get low contention on the ring in the transmitting driver.
2301 */
2302 #define CONN_TO_XMIT_HINT(connp) ((uint32_t)(((uintptr_t)connp) >> 11))
2303 #define ILL_RING_TO_XMIT_HINT(ring) ((uint32_t)(((uintptr_t)ring) >> 7))
2304
2305 /*
2306 * IP set Destination Flags used by function ip_set_destination,
2307 * ip_attr_connect, and conn_connect.
2308 */
2309 #define IPDF_ALLOW_MCBC 0x1 /* Allow multi/broadcast */
2310 #define IPDF_VERIFY_DST 0x2 /* Verify destination addr */
2311 #define IPDF_SELECT_SRC 0x4 /* Select source address */
2312 #define IPDF_LSO 0x8 /* Try LSO */
2313 #define IPDF_IPSEC 0x10 /* Set IPsec policy */
2314 #define IPDF_ZONE_IS_GLOBAL 0x20 /* From conn_zone_is_global */
2315 #define IPDF_ZCOPY 0x40 /* Try ZEROCOPY */
2316 #define IPDF_UNIQUE_DCE 0x80 /* Get a per-destination DCE */
2317
2318 /*
2319 * Receive side attributes used between the transport protocols and IP as
2320 * well as inside IP.
2321 */
2322 struct ip_recv_attr_s {
2323 iaflags_t ira_flags; /* See below */
2324
2325 uint32_t ira_free_flags; /* IRA_FREE_*. See below */
2326
2327 /*
2328 * This is a hint for TCP SYN packets.
2329 * Always initialized independently of ira_flags settings
2330 */
2331 squeue_t *ira_sqp;
2332 ill_rx_ring_t *ira_ring; /* Internal to IP */
2333
2334 /* For ip_accept_tcp when IRAF_TARGET_SQP is set */
2335 squeue_t *ira_target_sqp;
2336 mblk_t *ira_target_sqp_mp;
2337
2338 /* Always initialized independently of ira_flags settings */
2339 uint32_t ira_xmit_hint; /* For ECMP and GLD TX ring fanout */
2340 zoneid_t ira_zoneid; /* ALL_ZONES unless local delivery */
2341 uint_t ira_pktlen; /* Always set. For frag and stats */
2342 uint16_t ira_ip_hdr_length; /* Points to ULP header */
2343 uint8_t ira_protocol; /* Protocol number for ULP cksum */
2344 uint_t ira_rifindex; /* Received ifindex */
2345 uint_t ira_ruifindex; /* Received upper ifindex */
2346 ts_label_t *ira_tsl; /* Always set. NULL if not TX */
2347 /*
2348 * ira_rill and ira_ill is set inside IP, but not when conn_recv is
2349 * called; ULPs should use ira_ruifindex instead.
2350 */
2351 ill_t *ira_rill; /* ill where packet came */
2352 ill_t *ira_ill; /* ill where IP address hosted */
2353 cred_t *ira_cred; /* For getpeerucred */
2354 pid_t ira_cpid; /* For getpeerucred */
2355
2356 /* Used when IRAF_VERIFIED_SRC is set; this source was ok */
2357 ipaddr_t ira_verified_src;
2358
2359 /*
2360 * The following IPsec fields are only initialized when
2361 * IRAF_IPSEC_SECURE is set. Otherwise they contain garbage.
2362 */
2363 struct ipsec_action_s *ira_ipsec_action; /* how we made it in.. */
2364 struct ipsa_s *ira_ipsec_ah_sa; /* SA for AH */
2365 struct ipsa_s *ira_ipsec_esp_sa; /* SA for ESP */
2366
2367 ipaddr_t ira_mroute_tunnel; /* IRAF_MROUTE_TUNNEL_SET */
2368
2369 zoneid_t ira_no_loop_zoneid; /* IRAF_NO_LOOP_ZONEID_SET */
2370
2371 uint32_t ira_esp_udp_ports; /* IRAF_ESP_UDP_PORTS */
2372
2373 /*
2374 * For IP_RECVSLLA and ip_ndp_conflict/find_solicitation.
2375 * Same size as max for sockaddr_dl
2376 */
2377 #define IRA_L2SRC_SIZE 244
2378 uint8_t ira_l2src[IRA_L2SRC_SIZE]; /* If IRAF_L2SRC_SET */
2379
2380 /*
2381 * Local handle that we use to do lazy setting of ira_l2src.
2382 * We defer setting l2src until needed but we do before any
2383 * ip_input pullupmsg or copymsg.
2384 */
2385 struct mac_header_info_s *ira_mhip; /* Could be NULL */
2386 };
2387
2388 /*
2389 * Flags to indicate which receive attributes are set.
2390 */
2391 #define IRAF_SYSTEM_LABELED 0x00000001 /* is_system_labeled() */
2392 #define IRAF_IPV4_OPTIONS 0x00000002 /* Performance */
2393 #define IRAF_MULTICAST 0x00000004 /* Was multicast at L3 */
2394 #define IRAF_BROADCAST 0x00000008 /* Was broadcast at L3 */
2395 #define IRAF_MULTIBROADCAST (IRAF_MULTICAST|IRAF_BROADCAST)
2396
2397 #define IRAF_LOOPBACK 0x00000010 /* Looped back by IP */
2398 #define IRAF_VERIFY_IP_CKSUM 0x00000020 /* Need to verify IP */
2399 #define IRAF_VERIFY_ULP_CKSUM 0x00000040 /* Need to verify TCP,UDP,etc */
2400 #define IRAF_SCTP_CSUM_ERR 0x00000080 /* sctp pkt has failed chksum */
2401
2402 #define IRAF_IPSEC_SECURE 0x00000100 /* Passed AH and/or ESP */
2403 #define IRAF_DHCP_UNICAST 0x00000200
2404 #define IRAF_IPSEC_DECAPS 0x00000400 /* Was packet decapsulated */
2405 /* from a matching inner packet? */
2406 #define IRAF_TARGET_SQP 0x00000800 /* ira_target_sqp is set */
2407 #define IRAF_VERIFIED_SRC 0x00001000 /* ira_verified_src set */
2408 #define IRAF_RSVP 0x00002000 /* RSVP packet for rsvpd */
2409 #define IRAF_MROUTE_TUNNEL_SET 0x00004000 /* From ip_mroute_decap */
2410 #define IRAF_PIM_REGISTER 0x00008000 /* From register_mforward */
2411
2412 #define IRAF_TX_MAC_EXEMPTABLE 0x00010000 /* Allow MAC_EXEMPT readdown */
2413 #define IRAF_TX_SHARED_ADDR 0x00020000 /* Arrived on ALL_ZONES addr */
2414 #define IRAF_ESP_UDP_PORTS 0x00040000 /* NAT-traversal packet */
2415 #define IRAF_NO_HW_CKSUM 0x00080000 /* Force software cksum */
2416
2417 #define IRAF_ICMP_ERROR 0x00100000 /* Send to conn_recvicmp */
2418 #define IRAF_ROUTER_ALERT 0x00200000 /* IPv6 router alert */
2419 #define IRAF_L2SRC_SET 0x00400000 /* ira_l2src has been set */
2420 #define IRAF_L2SRC_LOOPBACK 0x00800000 /* Came from us */
2421
2422 #define IRAF_L2DST_MULTICAST 0x01000000 /* Multicast at L2 */
2423 #define IRAF_L2DST_BROADCAST 0x02000000 /* Broadcast at L2 */
2424 /* Unused 0x04000000 */
2425 /* Unused 0x08000000 */
2426
2427 /* Below starts with 0x10000000 */
2428 #define IRAF_IS_IPV4 IAF_IS_IPV4
2429 #define IRAF_TRUSTED_ICMP IAF_TRUSTED_ICMP
2430 #define IRAF_NO_LOOP_ZONEID_SET IAF_NO_LOOP_ZONEID_SET
2431 #define IRAF_LOOPBACK_COPY IAF_LOOPBACK_COPY
2432
2433 /*
2434 * Normally these fields do not have a hold. But in some cases they do, for
2435 * instance when we've gone through ip_*_attr_to/from_mblk.
2436 * We use ira_free_flags to indicate that they have a hold and need to be
2437 * released on cleanup.
2438 */
2439 #define IRA_FREE_CRED 0x00000001 /* ira_cred needs to be rele */
2440 #define IRA_FREE_TSL 0x00000002 /* ira_tsl needs to be rele */
2441
2442 /*
2443 * Optional destination cache entry for path MTU information,
2444 * and ULP metrics.
2445 */
2446 struct dce_s {
2447 uint_t dce_generation; /* Changed since cached? */
2448 uint_t dce_flags; /* See below */
2449 uint_t dce_ipversion; /* IPv4/IPv6 version */
2450 uint32_t dce_pmtu; /* Path MTU if DCEF_PMTU */
2451 uint32_t dce_ident; /* Per destination IP ident. */
2452 iulp_t dce_uinfo; /* Metrics if DCEF_UINFO */
2453
2454 struct dce_s *dce_next;
2455 struct dce_s **dce_ptpn;
2456 struct dcb_s *dce_bucket;
2457
2458 union {
2459 in6_addr_t dceu_v6addr;
2460 ipaddr_t dceu_v4addr;
2461 } dce_u;
2462 #define dce_v4addr dce_u.dceu_v4addr
2463 #define dce_v6addr dce_u.dceu_v6addr
2464 /* Note that for IPv6+IPMP we use the ifindex for the upper interface */
2465 uint_t dce_ifindex; /* For IPv6 link-locals */
2466
2467 kmutex_t dce_lock;
2468 uint_t dce_refcnt;
2469 uint64_t dce_last_change_time; /* Path MTU. In seconds */
2470
2471 ip_stack_t *dce_ipst; /* Does not have a netstack_hold */
2472 };
2473
2474 /*
2475 * Values for dce_generation.
2476 *
2477 * If a DCE has DCE_GENERATION_CONDEMNED, the last dce_refrele should delete
2478 * it.
2479 *
2480 * DCE_GENERATION_VERIFY is never stored in dce_generation but it is
2481 * stored in places that cache DCE (such as ixa_dce_generation).
2482 * It is used as a signal that the cache is stale and needs to be reverified.
2483 */
2484 #define DCE_GENERATION_CONDEMNED 0
2485 #define DCE_GENERATION_VERIFY 1
2486 #define DCE_GENERATION_INITIAL 2
2487 #define DCE_IS_CONDEMNED(dce) \
2488 ((dce)->dce_generation == DCE_GENERATION_CONDEMNED)
2489
2490
2491 /*
2492 * Values for ips_src_generation.
2493 *
2494 * SRC_GENERATION_VERIFY is never stored in ips_src_generation but it is
2495 * stored in places that cache IREs (ixa_src_generation). It is used as a
2496 * signal that the cache is stale and needs to be reverified.
2497 */
2498 #define SRC_GENERATION_VERIFY 0
2499 #define SRC_GENERATION_INITIAL 1
2500
2501 /*
2502 * The kernel stores security attributes of all gateways in a database made
2503 * up of one or more tsol_gcdb_t elements. Each tsol_gcdb_t contains the
2504 * security-related credentials of the gateway. More than one gateways may
2505 * share entries in the database.
2506 *
2507 * The tsol_gc_t structure represents the gateway to credential association,
2508 * and refers to an entry in the database. One or more tsol_gc_t entities are
2509 * grouped together to form one or more tsol_gcgrp_t, each representing the
2510 * list of security attributes specific to the gateway. A gateway may be
2511 * associated with at most one credentials group.
2512 */
2513 struct tsol_gcgrp_s;
2514
2515 extern uchar_t ip6opt_ls; /* TX IPv6 enabler */
2516
2517 /*
2518 * Gateway security credential record.
2519 */
2520 typedef struct tsol_gcdb_s {
2521 uint_t gcdb_refcnt; /* reference count */
2522 struct rtsa_s gcdb_attr; /* security attributes */
2523 #define gcdb_mask gcdb_attr.rtsa_mask
2524 #define gcdb_doi gcdb_attr.rtsa_doi
2525 #define gcdb_slrange gcdb_attr.rtsa_slrange
2526 } tsol_gcdb_t;
2527
2528 /*
2529 * Gateway to credential association.
2530 */
2531 typedef struct tsol_gc_s {
2532 uint_t gc_refcnt; /* reference count */
2533 struct tsol_gcgrp_s *gc_grp; /* pointer to group */
2534 struct tsol_gc_s *gc_prev; /* previous in list */
2535 struct tsol_gc_s *gc_next; /* next in list */
2536 tsol_gcdb_t *gc_db; /* pointer to actual credentials */
2537 } tsol_gc_t;
2538
2539 /*
2540 * Gateway credentials group address.
2541 */
2542 typedef struct tsol_gcgrp_addr_s {
2543 int ga_af; /* address family */
2544 in6_addr_t ga_addr; /* IPv4 mapped or IPv6 address */
2545 } tsol_gcgrp_addr_t;
2546
2547 /*
2548 * Gateway credentials group.
2549 */
2550 typedef struct tsol_gcgrp_s {
2551 uint_t gcgrp_refcnt; /* reference count */
2552 krwlock_t gcgrp_rwlock; /* lock to protect following */
2553 uint_t gcgrp_count; /* number of credentials */
2554 tsol_gc_t *gcgrp_head; /* first credential in list */
2555 tsol_gc_t *gcgrp_tail; /* last credential in list */
2556 tsol_gcgrp_addr_t gcgrp_addr; /* next-hop gateway address */
2557 } tsol_gcgrp_t;
2558
2559 extern kmutex_t gcgrp_lock;
2560
2561 #define GC_REFRELE(p) { \
2562 ASSERT((p)->gc_grp != NULL); \
2563 rw_enter(&(p)->gc_grp->gcgrp_rwlock, RW_WRITER); \
2564 ASSERT((p)->gc_refcnt > 0); \
2565 if (--((p)->gc_refcnt) == 0) \
2566 gc_inactive(p); \
2567 else \
2568 rw_exit(&(p)->gc_grp->gcgrp_rwlock); \
2569 }
2570
2571 #define GCGRP_REFHOLD(p) { \
2572 mutex_enter(&gcgrp_lock); \
2573 ++((p)->gcgrp_refcnt); \
2574 ASSERT((p)->gcgrp_refcnt != 0); \
2575 mutex_exit(&gcgrp_lock); \
2576 }
2577
2578 #define GCGRP_REFRELE(p) { \
2579 mutex_enter(&gcgrp_lock); \
2580 ASSERT((p)->gcgrp_refcnt > 0); \
2581 if (--((p)->gcgrp_refcnt) == 0) \
2582 gcgrp_inactive(p); \
2583 ASSERT(MUTEX_HELD(&gcgrp_lock)); \
2584 mutex_exit(&gcgrp_lock); \
2585 }
2586
2587 /*
2588 * IRE gateway security attributes structure, pointed to by tsol_ire_gw_secattr
2589 */
2590 struct tsol_tnrhc;
2591
2592 struct tsol_ire_gw_secattr_s {
2593 kmutex_t igsa_lock; /* lock to protect following */
2594 struct tsol_tnrhc *igsa_rhc; /* host entry for gateway */
2595 tsol_gc_t *igsa_gc; /* for prefix IREs */
2596 };
2597
2598 void irb_refrele_ftable(irb_t *);
2599
2600 extern struct kmem_cache *rt_entry_cache;
2601
2602 typedef struct ire4 {
2603 ipaddr_t ire4_mask; /* Mask for matching this IRE. */
2604 ipaddr_t ire4_addr; /* Address this IRE represents. */
2605 ipaddr_t ire4_gateway_addr; /* Gateway including for IRE_ONLINK */
2606 ipaddr_t ire4_setsrc_addr; /* RTF_SETSRC */
2607 } ire4_t;
2608
2609 typedef struct ire6 {
2610 in6_addr_t ire6_mask; /* Mask for matching this IRE. */
2611 in6_addr_t ire6_addr; /* Address this IRE represents. */
2612 in6_addr_t ire6_gateway_addr; /* Gateway including for IRE_ONLINK */
2613 in6_addr_t ire6_setsrc_addr; /* RTF_SETSRC */
2614 } ire6_t;
2615
2616 typedef union ire_addr {
2617 ire6_t ire6_u;
2618 ire4_t ire4_u;
2619 } ire_addr_u_t;
2620
2621 /*
2622 * Internet Routing Entry
2623 * When we have multiple identical IREs we logically add them by manipulating
2624 * ire_identical_ref and ire_delete first decrements
2625 * that and when it reaches 1 we know it is the last IRE.
2626 * "identical" is defined as being the same for:
2627 * ire_addr, ire_netmask, ire_gateway, ire_ill, ire_zoneid, and ire_type
2628 * For instance, multiple IRE_BROADCASTs for the same subnet number are
2629 * viewed as identical, and so are the IRE_INTERFACEs when there are
2630 * multiple logical interfaces (on the same ill) with the same subnet prefix.
2631 */
2632 struct ire_s {
2633 struct ire_s *ire_next; /* The hash chain must be first. */
2634 struct ire_s **ire_ptpn; /* Pointer to previous next. */
2635 uint32_t ire_refcnt; /* Number of references */
2636 ill_t *ire_ill;
2637 uint32_t ire_identical_ref; /* IRE_INTERFACE, IRE_BROADCAST */
2638 uchar_t ire_ipversion; /* IPv4/IPv6 version */
2639 ushort_t ire_type; /* Type of IRE */
2640 uint_t ire_generation; /* Generation including CONDEMNED */
2641 uint_t ire_ib_pkt_count; /* Inbound packets for ire_addr */
2642 uint_t ire_ob_pkt_count; /* Outbound packets to ire_addr */
2643 time_t ire_create_time; /* Time (in secs) IRE was created. */
2644 uint32_t ire_flags; /* flags related to route (RTF_*) */
2645 /*
2646 * ire_testhidden is TRUE for INTERFACE IREs of IS_UNDER_IPMP(ill)
2647 * interfaces
2648 */
2649 boolean_t ire_testhidden;
2650 pfirerecv_t ire_recvfn; /* Receive side handling */
2651 pfiresend_t ire_sendfn; /* Send side handling */
2652 pfirepostfrag_t ire_postfragfn; /* Bottom end of send handling */
2653
2654 uint_t ire_masklen; /* # bits in ire_mask{,_v6} */
2655 ire_addr_u_t ire_u; /* IPv4/IPv6 address info. */
2656
2657 irb_t *ire_bucket; /* Hash bucket when ire_ptphn is set */
2658 kmutex_t ire_lock;
2659 clock_t ire_last_used_time; /* For IRE_LOCAL reception */
2660 tsol_ire_gw_secattr_t *ire_gw_secattr; /* gateway security attributes */
2661 zoneid_t ire_zoneid;
2662
2663 /*
2664 * Cached information of where to send packets that match this route.
2665 * The ire_dep_* information is used to determine when ire_nce_cache
2666 * needs to be updated.
2667 * ire_nce_cache is the fastpath for the Neighbor Cache Entry
2668 * for IPv6; arp info for IPv4
2669 * Since this is a cache setup and torn down independently of
2670 * applications we need to use nce_ref{rele,hold}_notr for it.
2671 */
2672 nce_t *ire_nce_cache;
2673
2674 /*
2675 * Quick check whether the ire_type and ire_masklen indicates
2676 * that the IRE can have ire_nce_cache set i.e., whether it is
2677 * IRE_ONLINK and for a single destination.
2678 */
2679 boolean_t ire_nce_capable;
2680
2681 /*
2682 * Dependency tracking so we can safely cache IRE and NCE pointers
2683 * in offlink and onlink IREs.
2684 * These are locked under the ips_ire_dep_lock rwlock. Write held
2685 * when modifying the linkage.
2686 * ire_dep_parent (Also chain towards IRE for nexthop)
2687 * ire_dep_parent_generation: ire_generation of ire_dep_parent
2688 * ire_dep_children (From parent to first child)
2689 * ire_dep_sib_next (linked list of siblings)
2690 * ire_dep_sib_ptpn (linked list of siblings)
2691 *
2692 * The parent has a ire_refhold on each child, and each child has
2693 * an ire_refhold on its parent.
2694 * Since ire_dep_parent is a cache setup and torn down independently of
2695 * applications we need to use ire_ref{rele,hold}_notr for it.
2696 */
2697 ire_t *ire_dep_parent;
2698 ire_t *ire_dep_children;
2699 ire_t *ire_dep_sib_next;
2700 ire_t **ire_dep_sib_ptpn; /* Pointer to previous next */
2701 uint_t ire_dep_parent_generation;
2702
2703 uint_t ire_badcnt; /* Number of times ND_UNREACHABLE */
2704 uint64_t ire_last_badcnt; /* In seconds */
2705
2706 /* ire_defense* and ire_last_used_time are only used on IRE_LOCALs */
2707 uint_t ire_defense_count; /* number of ARP conflicts */
2708 uint_t ire_defense_time; /* last time defended (secs) */
2709
2710 boolean_t ire_trace_disable; /* True when alloc fails */
2711 ip_stack_t *ire_ipst; /* Does not have a netstack_hold */
2712 iulp_t ire_metrics;
2713 /*
2714 * default and prefix routes that are added without explicitly
2715 * specifying the interface are termed "unbound" routes, and will
2716 * have ire_unbound set to true.
2717 */
2718 boolean_t ire_unbound;
2719 };
2720
2721 /* IPv4 compatibility macros */
2722 #define ire_mask ire_u.ire4_u.ire4_mask
2723 #define ire_addr ire_u.ire4_u.ire4_addr
2724 #define ire_gateway_addr ire_u.ire4_u.ire4_gateway_addr
2725 #define ire_setsrc_addr ire_u.ire4_u.ire4_setsrc_addr
2726
2727 #define ire_mask_v6 ire_u.ire6_u.ire6_mask
2728 #define ire_addr_v6 ire_u.ire6_u.ire6_addr
2729 #define ire_gateway_addr_v6 ire_u.ire6_u.ire6_gateway_addr
2730 #define ire_setsrc_addr_v6 ire_u.ire6_u.ire6_setsrc_addr
2731
2732 /*
2733 * Values for ire_generation.
2734 *
2735 * If an IRE is marked with IRE_IS_CONDEMNED, the last walker of
2736 * the bucket should delete this IRE from this bucket.
2737 *
2738 * IRE_GENERATION_VERIFY is never stored in ire_generation but it is
2739 * stored in places that cache IREs (such as ixa_ire_generation and
2740 * ire_dep_parent_generation). It is used as a signal that the cache is
2741 * stale and needs to be reverified.
2742 */
2743 #define IRE_GENERATION_CONDEMNED 0
2744 #define IRE_GENERATION_VERIFY 1
2745 #define IRE_GENERATION_INITIAL 2
2746 #define IRE_IS_CONDEMNED(ire) \
2747 ((ire)->ire_generation == IRE_GENERATION_CONDEMNED)
2748
2749 /* Convenient typedefs for sockaddrs */
2750 typedef struct sockaddr_in sin_t;
2751 typedef struct sockaddr_in6 sin6_t;
2752
2753 /* Name/Value Descriptor. */
2754 typedef struct nv_s {
2755 uint64_t nv_value;
2756 char *nv_name;
2757 } nv_t;
2758
2759 #define ILL_FRAG_HASH(s, i) \
2760 ((ntohl(s) ^ ((i) ^ ((i) >> 8))) % ILL_FRAG_HASH_TBL_COUNT)
2761
2762 /*
2763 * The MAX number of allowed fragmented packets per hash bucket
2764 * calculation is based on the most common mtu size of 1500. This limit
2765 * will work well for other mtu sizes as well.
2766 */
2767 #define COMMON_IP_MTU 1500
2768 #define MAX_FRAG_MIN 10
2769 #define MAX_FRAG_PKTS(ipst) \
2770 MAX(MAX_FRAG_MIN, (2 * (ipst->ips_ip_reass_queue_bytes / \
2771 (COMMON_IP_MTU * ILL_FRAG_HASH_TBL_COUNT))))
2772
2773 /*
2774 * Maximum dups allowed per packet.
2775 */
2776 extern uint_t ip_max_frag_dups;
2777
2778 /*
2779 * Per-packet information for received packets and transmitted.
2780 * Used by the transport protocols when converting between the packet
2781 * and ancillary data and socket options.
2782 *
2783 * Note: This private data structure and related IPPF_* constant
2784 * definitions are exposed to enable compilation of some debugging tools
2785 * like lsof which use struct tcp_t in <inet/tcp.h>. This is intended to be
2786 * a temporary hack and long term alternate interfaces should be defined
2787 * to support the needs of such tools and private definitions moved to
2788 * private headers.
2789 */
2790 struct ip_pkt_s {
2791 uint_t ipp_fields; /* Which fields are valid */
2792 in6_addr_t ipp_addr; /* pktinfo src/dst addr */
2793 #define ipp_addr_v4 V4_PART_OF_V6(ipp_addr)
2794 uint_t ipp_unicast_hops; /* IPV6_UNICAST_HOPS, IP_TTL */
2795 uint_t ipp_hoplimit; /* IPV6_HOPLIMIT */
2796 uint_t ipp_hopoptslen;
2797 uint_t ipp_rthdrdstoptslen;
2798 uint_t ipp_rthdrlen;
2799 uint_t ipp_dstoptslen;
2800 uint_t ipp_fraghdrlen;
2801 ip6_hbh_t *ipp_hopopts;
2802 ip6_dest_t *ipp_rthdrdstopts;
2803 ip6_rthdr_t *ipp_rthdr;
2804 ip6_dest_t *ipp_dstopts;
2805 ip6_frag_t *ipp_fraghdr;
2806 uint8_t ipp_tclass; /* IPV6_TCLASS */
2807 uint8_t ipp_type_of_service; /* IP_TOS */
2808 uint_t ipp_ipv4_options_len; /* Len of IPv4 options */
2809 uint8_t *ipp_ipv4_options; /* Ptr to IPv4 options */
2810 uint_t ipp_label_len_v4; /* Len of TX label for IPv4 */
2811 uint8_t *ipp_label_v4; /* TX label for IPv4 */
2812 uint_t ipp_label_len_v6; /* Len of TX label for IPv6 */
2813 uint8_t *ipp_label_v6; /* TX label for IPv6 */
2814 };
2815 typedef struct ip_pkt_s ip_pkt_t;
2816
2817 extern void ip_pkt_free(ip_pkt_t *); /* free storage inside ip_pkt_t */
2818 extern ipaddr_t ip_pkt_source_route_v4(const ip_pkt_t *);
2819 extern in6_addr_t *ip_pkt_source_route_v6(const ip_pkt_t *);
2820 extern int ip_pkt_copy(ip_pkt_t *, ip_pkt_t *, int);
2821 extern void ip_pkt_source_route_reverse_v4(ip_pkt_t *);
2822
2823 /* ipp_fields values */
2824 #define IPPF_ADDR 0x0001 /* Part of in6_pktinfo: src/dst addr */
2825 #define IPPF_HOPLIMIT 0x0002 /* Overrides unicast and multicast */
2826 #define IPPF_TCLASS 0x0004 /* Overrides class in sin6_flowinfo */
2827
2828 #define IPPF_HOPOPTS 0x0010 /* ipp_hopopts set */
2829 #define IPPF_RTHDR 0x0020 /* ipp_rthdr set */
2830 #define IPPF_RTHDRDSTOPTS 0x0040 /* ipp_rthdrdstopts set */
2831 #define IPPF_DSTOPTS 0x0080 /* ipp_dstopts set */
2832
2833 #define IPPF_IPV4_OPTIONS 0x0100 /* ipp_ipv4_options set */
2834 #define IPPF_LABEL_V4 0x0200 /* ipp_label_v4 set */
2835 #define IPPF_LABEL_V6 0x0400 /* ipp_label_v6 set */
2836
2837 #define IPPF_FRAGHDR 0x0800 /* Used for IPsec receive side */
2838
2839 /*
2840 * Data structure which is passed to conn_opt_get/set.
2841 * The conn_t is included even though it can be inferred from queue_t.
2842 * setsockopt and getsockopt use conn_ixa and conn_xmit_ipp. However,
2843 * when handling ancillary data we use separate ixa and ipps.
2844 */
2845 typedef struct conn_opt_arg_s {
2846 conn_t *coa_connp;
2847 ip_xmit_attr_t *coa_ixa;
2848 ip_pkt_t *coa_ipp;
2849 boolean_t coa_ancillary; /* Ancillary data and not setsockopt */
2850 uint_t coa_changed; /* See below */
2851 } conn_opt_arg_t;
2852
2853 /*
2854 * Flags for what changed.
2855 * If we want to be more efficient in the future we can have more fine
2856 * grained flags e.g., a flag for just IP_TOS changing.
2857 * For now we either call ip_set_destination (for "route changed")
2858 * and/or conn_build_hdr_template/conn_prepend_hdr (for "header changed").
2859 */
2860 #define COA_HEADER_CHANGED 0x0001
2861 #define COA_ROUTE_CHANGED 0x0002
2862 #define COA_RCVBUF_CHANGED 0x0004 /* SO_RCVBUF */
2863 #define COA_SNDBUF_CHANGED 0x0008 /* SO_SNDBUF */
2864 #define COA_WROFF_CHANGED 0x0010 /* Header size changed */
2865 #define COA_ICMP_BIND_NEEDED 0x0020
2866 #define COA_OOBINLINE_CHANGED 0x0040
2867
2868 #define TCP_PORTS_OFFSET 0
2869 #define UDP_PORTS_OFFSET 0
2870
2871 /*
2872 * lookups return the ill/ipif only if the flags are clear OR Iam writer.
2873 * ill / ipif lookup functions increment the refcnt on the ill / ipif only
2874 * after calling these macros. This ensures that the refcnt on the ipif or
2875 * ill will eventually drop down to zero.
2876 */
2877 #define ILL_LOOKUP_FAILED 1 /* Used as error code */
2878 #define IPIF_LOOKUP_FAILED 2 /* Used as error code */
2879
2880 #define ILL_CAN_LOOKUP(ill) \
2881 (!((ill)->ill_state_flags & ILL_CONDEMNED) || \
2882 IAM_WRITER_ILL(ill))
2883
2884 #define ILL_IS_CONDEMNED(ill) \
2885 ((ill)->ill_state_flags & ILL_CONDEMNED)
2886
2887 #define IPIF_CAN_LOOKUP(ipif) \
2888 (!((ipif)->ipif_state_flags & IPIF_CONDEMNED) || \
2889 IAM_WRITER_IPIF(ipif))
2890
2891 #define IPIF_IS_CONDEMNED(ipif) \
2892 ((ipif)->ipif_state_flags & IPIF_CONDEMNED)
2893
2894 #define IPIF_IS_CHANGING(ipif) \
2895 ((ipif)->ipif_state_flags & IPIF_CHANGING)
2896
2897 /* Macros used to assert that this thread is a writer */
2898 #define IAM_WRITER_IPSQ(ipsq) ((ipsq)->ipsq_xop->ipx_writer == curthread)
2899 #define IAM_WRITER_ILL(ill) IAM_WRITER_IPSQ((ill)->ill_phyint->phyint_ipsq)
2900 #define IAM_WRITER_IPIF(ipif) IAM_WRITER_ILL((ipif)->ipif_ill)
2901
2902 /*
2903 * Grab ill locks in the proper order. The order is highest addressed
2904 * ill is locked first.
2905 */
2906 #define GRAB_ILL_LOCKS(ill_1, ill_2) \
2907 { \
2908 if ((ill_1) > (ill_2)) { \
2909 if (ill_1 != NULL) \
2910 mutex_enter(&(ill_1)->ill_lock); \
2911 if (ill_2 != NULL) \
2912 mutex_enter(&(ill_2)->ill_lock); \
2913 } else { \
2914 if (ill_2 != NULL) \
2915 mutex_enter(&(ill_2)->ill_lock); \
2916 if (ill_1 != NULL && ill_1 != ill_2) \
2917 mutex_enter(&(ill_1)->ill_lock); \
2918 } \
2919 }
2920
2921 #define RELEASE_ILL_LOCKS(ill_1, ill_2) \
2922 { \
2923 if (ill_1 != NULL) \
2924 mutex_exit(&(ill_1)->ill_lock); \
2925 if (ill_2 != NULL && ill_2 != ill_1) \
2926 mutex_exit(&(ill_2)->ill_lock); \
2927 }
2928
2929 /* Get the other protocol instance ill */
2930 #define ILL_OTHER(ill) \
2931 ((ill)->ill_isv6 ? (ill)->ill_phyint->phyint_illv4 : \
2932 (ill)->ill_phyint->phyint_illv6)
2933
2934 /* ioctl command info: Ioctl properties extracted and stored in here */
2935 typedef struct cmd_info_s
2936 {
2937 ipif_t *ci_ipif; /* ipif associated with [l]ifreq ioctl's */
2938 sin_t *ci_sin; /* the sin struct passed down */
2939 sin6_t *ci_sin6; /* the sin6_t struct passed down */
2940 struct lifreq *ci_lifr; /* the lifreq struct passed down */
2941 } cmd_info_t;
2942
2943 extern struct kmem_cache *ire_cache;
2944
2945 extern ipaddr_t ip_g_all_ones;
2946
2947 extern uint_t ip_loopback_mtu; /* /etc/system */
2948 extern uint_t ip_loopback_mtuplus;
2949 extern uint_t ip_loopback_mtu_v6plus;
2950
2951 extern vmem_t *ip_minor_arena_sa;
2952 extern vmem_t *ip_minor_arena_la;
2953
2954 /*
2955 * ip_g_forward controls IP forwarding. It takes two values:
2956 * 0: IP_FORWARD_NEVER Don't forward packets ever.
2957 * 1: IP_FORWARD_ALWAYS Forward packets for elsewhere.
2958 *
2959 * RFC1122 says there must be a configuration switch to control forwarding,
2960 * but that the default MUST be to not forward packets ever. Implicit
2961 * control based on configuration of multiple interfaces MUST NOT be
2962 * implemented (Section 3.1). SunOS 4.1 did provide the "automatic" capability
2963 * and, in fact, it was the default. That capability is now provided in the
2964 * /etc/rc2.d/S69inet script.
2965 */
2966
2967 #define ips_ip_respond_to_address_mask_broadcast \
2968 ips_propinfo_tbl[0].prop_cur_bval
2969 #define ips_ip_g_resp_to_echo_bcast ips_propinfo_tbl[1].prop_cur_bval
2970 #define ips_ip_g_resp_to_echo_mcast ips_propinfo_tbl[2].prop_cur_bval
2971 #define ips_ip_g_resp_to_timestamp ips_propinfo_tbl[3].prop_cur_bval
2972 #define ips_ip_g_resp_to_timestamp_bcast ips_propinfo_tbl[4].prop_cur_bval
2973 #define ips_ip_g_send_redirects ips_propinfo_tbl[5].prop_cur_bval
2974 #define ips_ip_g_forward_directed_bcast ips_propinfo_tbl[6].prop_cur_bval
2975 #define ips_ip_mrtdebug ips_propinfo_tbl[7].prop_cur_uval
2976 #define ips_ip_ire_reclaim_fraction ips_propinfo_tbl[8].prop_cur_uval
2977 #define ips_ip_nce_reclaim_fraction ips_propinfo_tbl[9].prop_cur_uval
2978 #define ips_ip_dce_reclaim_fraction ips_propinfo_tbl[10].prop_cur_uval
2979 #define ips_ip_def_ttl ips_propinfo_tbl[11].prop_cur_uval
2980 #define ips_ip_forward_src_routed ips_propinfo_tbl[12].prop_cur_bval
2981 #define ips_ip_wroff_extra ips_propinfo_tbl[13].prop_cur_uval
2982 #define ips_ip_pathmtu_interval ips_propinfo_tbl[14].prop_cur_uval
2983 #define ips_ip_icmp_return ips_propinfo_tbl[15].prop_cur_uval
2984 #define ips_ip_path_mtu_discovery ips_propinfo_tbl[16].prop_cur_bval
2985 #define ips_ip_pmtu_min ips_propinfo_tbl[17].prop_cur_uval
2986 #define ips_ip_ignore_redirect ips_propinfo_tbl[18].prop_cur_bval
2987 #define ips_ip_arp_icmp_error ips_propinfo_tbl[19].prop_cur_bval
2988 #define ips_ip_broadcast_ttl ips_propinfo_tbl[20].prop_cur_uval
2989 #define ips_ip_icmp_err_interval ips_propinfo_tbl[21].prop_cur_uval
2990 #define ips_ip_icmp_err_burst ips_propinfo_tbl[22].prop_cur_uval
2991 #define ips_ip_reass_queue_bytes ips_propinfo_tbl[23].prop_cur_uval
2992 #define ips_ip_strict_dst_multihoming ips_propinfo_tbl[24].prop_cur_uval
2993 #define ips_ip_addrs_per_if ips_propinfo_tbl[25].prop_cur_uval
2994 #define ips_ipsec_override_persocket_policy ips_propinfo_tbl[26].prop_cur_bval
2995 #define ips_icmp_accept_clear_messages ips_propinfo_tbl[27].prop_cur_bval
2996 #define ips_igmp_accept_clear_messages ips_propinfo_tbl[28].prop_cur_bval
2997
2998 /* IPv6 configuration knobs */
2999 #define ips_delay_first_probe_time ips_propinfo_tbl[29].prop_cur_uval
3000 #define ips_max_unicast_solicit ips_propinfo_tbl[30].prop_cur_uval
3001 #define ips_ipv6_def_hops ips_propinfo_tbl[31].prop_cur_uval
3002 #define ips_ipv6_icmp_return ips_propinfo_tbl[32].prop_cur_uval
3003 #define ips_ipv6_forward_src_routed ips_propinfo_tbl[33].prop_cur_bval
3004 #define ips_ipv6_resp_echo_mcast ips_propinfo_tbl[34].prop_cur_bval
3005 #define ips_ipv6_send_redirects ips_propinfo_tbl[35].prop_cur_bval
3006 #define ips_ipv6_ignore_redirect ips_propinfo_tbl[36].prop_cur_bval
3007 #define ips_ipv6_strict_dst_multihoming ips_propinfo_tbl[37].prop_cur_uval
3008 #define ips_src_check ips_propinfo_tbl[38].prop_cur_uval
3009 #define ips_ipsec_policy_log_interval ips_propinfo_tbl[39].prop_cur_uval
3010 #define ips_pim_accept_clear_messages ips_propinfo_tbl[40].prop_cur_bval
3011 #define ips_ip_ndp_unsolicit_interval ips_propinfo_tbl[41].prop_cur_uval
3012 #define ips_ip_ndp_unsolicit_count ips_propinfo_tbl[42].prop_cur_uval
3013 #define ips_ipv6_ignore_home_address_opt ips_propinfo_tbl[43].prop_cur_bval
3014
3015 /* Misc IP configuration knobs */
3016 #define ips_ip_policy_mask ips_propinfo_tbl[44].prop_cur_uval
3017 #define ips_ip_ecmp_behavior ips_propinfo_tbl[45].prop_cur_uval
3018 #define ips_ip_multirt_ttl ips_propinfo_tbl[46].prop_cur_uval
3019 #define ips_ip_ire_badcnt_lifetime ips_propinfo_tbl[47].prop_cur_uval
3020 #define ips_ip_max_temp_idle ips_propinfo_tbl[48].prop_cur_uval
3021 #define ips_ip_max_temp_defend ips_propinfo_tbl[49].prop_cur_uval
3022 #define ips_ip_max_defend ips_propinfo_tbl[50].prop_cur_uval
3023 #define ips_ip_defend_interval ips_propinfo_tbl[51].prop_cur_uval
3024 #define ips_ip_dup_recovery ips_propinfo_tbl[52].prop_cur_uval
3025 #define ips_ip_restrict_interzone_loopback ips_propinfo_tbl[53].prop_cur_bval
3026 #define ips_ip_lso_outbound ips_propinfo_tbl[54].prop_cur_bval
3027 #define ips_igmp_max_version ips_propinfo_tbl[55].prop_cur_uval
3028 #define ips_mld_max_version ips_propinfo_tbl[56].prop_cur_uval
3029 #define ips_ip_forwarding ips_propinfo_tbl[57].prop_cur_bval
3030 #define ips_ipv6_forwarding ips_propinfo_tbl[58].prop_cur_bval
3031 #define ips_ip_reassembly_timeout ips_propinfo_tbl[59].prop_cur_uval
3032 #define ips_ipv6_reassembly_timeout ips_propinfo_tbl[60].prop_cur_uval
3033 #define ips_ip_cgtp_filter ips_propinfo_tbl[61].prop_cur_bval
3034 #define ips_arp_probe_delay ips_propinfo_tbl[62].prop_cur_uval
3035 #define ips_arp_fastprobe_delay ips_propinfo_tbl[63].prop_cur_uval
3036 #define ips_arp_probe_interval ips_propinfo_tbl[64].prop_cur_uval
3037 #define ips_arp_fastprobe_interval ips_propinfo_tbl[65].prop_cur_uval
3038 #define ips_arp_probe_count ips_propinfo_tbl[66].prop_cur_uval
3039 #define ips_arp_fastprobe_count ips_propinfo_tbl[67].prop_cur_uval
3040 #define ips_ipv4_dad_announce_interval ips_propinfo_tbl[68].prop_cur_uval
3041 #define ips_ipv6_dad_announce_interval ips_propinfo_tbl[69].prop_cur_uval
3042 #define ips_arp_defend_interval ips_propinfo_tbl[70].prop_cur_uval
3043 #define ips_arp_defend_rate ips_propinfo_tbl[71].prop_cur_uval
3044 #define ips_ndp_defend_interval ips_propinfo_tbl[72].prop_cur_uval
3045 #define ips_ndp_defend_rate ips_propinfo_tbl[73].prop_cur_uval
3046 #define ips_arp_defend_period ips_propinfo_tbl[74].prop_cur_uval
3047 #define ips_ndp_defend_period ips_propinfo_tbl[75].prop_cur_uval
3048 #define ips_ipv4_icmp_return_pmtu ips_propinfo_tbl[76].prop_cur_bval
3049 #define ips_ipv6_icmp_return_pmtu ips_propinfo_tbl[77].prop_cur_bval
3050 #define ips_ip_arp_publish_count ips_propinfo_tbl[78].prop_cur_uval
3051 #define ips_ip_arp_publish_interval ips_propinfo_tbl[79].prop_cur_uval
3052 #define ips_ip_strict_src_multihoming ips_propinfo_tbl[80].prop_cur_uval
3053 #define ips_ipv6_strict_src_multihoming ips_propinfo_tbl[81].prop_cur_uval
3054 #define ips_ipv6_drop_inbound_icmpv6 ips_propinfo_tbl[82].prop_cur_bval
3055 #define ips_ip_dce_reclaim_threshold ips_propinfo_tbl[83].prop_cur_uval
3056
3057 extern int dohwcksum; /* use h/w cksum if supported by the h/w */
3058 #ifdef ZC_TEST
3059 extern int noswcksum;
3060 #endif
3061
3062 extern char ipif_loopback_name[];
3063
3064 extern nv_t *ire_nv_tbl;
3065
3066 extern struct module_info ip_mod_info;
3067
3068 #define HOOKS4_INTERESTED_PHYSICAL_IN(ipst) \
3069 ((ipst)->ips_ip4_physical_in_event.he_interested)
3070 #define HOOKS6_INTERESTED_PHYSICAL_IN(ipst) \
3071 ((ipst)->ips_ip6_physical_in_event.he_interested)
3072 #define HOOKS4_INTERESTED_PHYSICAL_OUT(ipst) \
3073 ((ipst)->ips_ip4_physical_out_event.he_interested)
3074 #define HOOKS6_INTERESTED_PHYSICAL_OUT(ipst) \
3075 ((ipst)->ips_ip6_physical_out_event.he_interested)
3076 #define HOOKS4_INTERESTED_FORWARDING(ipst) \
3077 ((ipst)->ips_ip4_forwarding_event.he_interested)
3078 #define HOOKS6_INTERESTED_FORWARDING(ipst) \
3079 ((ipst)->ips_ip6_forwarding_event.he_interested)
3080 #define HOOKS4_INTERESTED_LOOPBACK_IN(ipst) \
3081 ((ipst)->ips_ip4_loopback_in_event.he_interested)
3082 #define HOOKS6_INTERESTED_LOOPBACK_IN(ipst) \
3083 ((ipst)->ips_ip6_loopback_in_event.he_interested)
3084 #define HOOKS4_INTERESTED_LOOPBACK_OUT(ipst) \
3085 ((ipst)->ips_ip4_loopback_out_event.he_interested)
3086 #define HOOKS6_INTERESTED_LOOPBACK_OUT(ipst) \
3087 ((ipst)->ips_ip6_loopback_out_event.he_interested)
3088 /*
3089 * Hooks marcos used inside of ip
3090 * The callers use the above INTERESTED macros first, hence
3091 * the he_interested check is superflous.
3092 */
3093 #define FW_HOOKS(_hook, _event, _ilp, _olp, _iph, _fm, _m, _llm, ipst, _err) \
3094 if ((_hook).he_interested) { \
3095 hook_pkt_event_t info; \
3096 \
3097 _NOTE(CONSTCOND) \
3098 ASSERT((_ilp != NULL) || (_olp != NULL)); \
3099 \
3100 FW_SET_ILL_INDEX(info.hpe_ifp, (ill_t *)_ilp); \
3101 FW_SET_ILL_INDEX(info.hpe_ofp, (ill_t *)_olp); \
3102 info.hpe_protocol = ipst->ips_ipv4_net_data; \
3103 info.hpe_hdr = _iph; \
3104 info.hpe_mp = &(_fm); \
3105 info.hpe_mb = _m; \
3106 info.hpe_flags = _llm; \
3107 _err = hook_run(ipst->ips_ipv4_net_data->netd_hooks, \
3108 _event, (hook_data_t)&info); \
3109 if (_err != 0) { \
3110 ip2dbg(("%s hook dropped mblk chain %p hdr %p\n",\
3111 (_hook).he_name, (void *)_fm, (void *)_m)); \
3112 if (_fm != NULL) { \
3113 freemsg(_fm); \
3114 _fm = NULL; \
3115 } \
3116 _iph = NULL; \
3117 _m = NULL; \
3118 } else { \
3119 _iph = info.hpe_hdr; \
3120 _m = info.hpe_mb; \
3121 } \
3122 }
3123
3124 #define FW_HOOKS6(_hook, _event, _ilp, _olp, _iph, _fm, _m, _llm, ipst, _err) \
3125 if ((_hook).he_interested) { \
3126 hook_pkt_event_t info; \
3127 \
3128 _NOTE(CONSTCOND) \
3129 ASSERT((_ilp != NULL) || (_olp != NULL)); \
3130 \
3131 FW_SET_ILL_INDEX(info.hpe_ifp, (ill_t *)_ilp); \
3132 FW_SET_ILL_INDEX(info.hpe_ofp, (ill_t *)_olp); \
3133 info.hpe_protocol = ipst->ips_ipv6_net_data; \
3134 info.hpe_hdr = _iph; \
3135 info.hpe_mp = &(_fm); \
3136 info.hpe_mb = _m; \
3137 info.hpe_flags = _llm; \
3138 _err = hook_run(ipst->ips_ipv6_net_data->netd_hooks, \
3139 _event, (hook_data_t)&info); \
3140 if (_err != 0) { \
3141 ip2dbg(("%s hook dropped mblk chain %p hdr %p\n",\
3142 (_hook).he_name, (void *)_fm, (void *)_m)); \
3143 if (_fm != NULL) { \
3144 freemsg(_fm); \
3145 _fm = NULL; \
3146 } \
3147 _iph = NULL; \
3148 _m = NULL; \
3149 } else { \
3150 _iph = info.hpe_hdr; \
3151 _m = info.hpe_mb; \
3152 } \
3153 }
3154
3155 #define FW_SET_ILL_INDEX(fp, ill) \
3156 _NOTE(CONSTCOND) \
3157 if ((ill) == NULL || (ill)->ill_phyint == NULL) { \
3158 (fp) = 0; \
3159 _NOTE(CONSTCOND) \
3160 } else if (IS_UNDER_IPMP(ill)) { \
3161 (fp) = ipmp_ill_get_ipmp_ifindex(ill); \
3162 } else { \
3163 (fp) = (ill)->ill_phyint->phyint_ifindex; \
3164 }
3165
3166 /*
3167 * Network byte order macros
3168 */
3169 #ifdef _BIG_ENDIAN
3170 #define N_IN_CLASSA_NET IN_CLASSA_NET
3171 #define N_IN_CLASSD_NET IN_CLASSD_NET
3172 #define N_INADDR_UNSPEC_GROUP INADDR_UNSPEC_GROUP
3173 #define N_IN_LOOPBACK_NET (ipaddr_t)0x7f000000U
3174 #else /* _BIG_ENDIAN */
3175 #define N_IN_CLASSA_NET (ipaddr_t)0x000000ffU
3176 #define N_IN_CLASSD_NET (ipaddr_t)0x000000f0U
3177 #define N_INADDR_UNSPEC_GROUP (ipaddr_t)0x000000e0U
3178 #define N_IN_LOOPBACK_NET (ipaddr_t)0x0000007fU
3179 #endif /* _BIG_ENDIAN */
3180 #define CLASSD(addr) (((addr) & N_IN_CLASSD_NET) == N_INADDR_UNSPEC_GROUP)
3181 #define CLASSE(addr) (((addr) & N_IN_CLASSD_NET) == N_IN_CLASSD_NET)
3182 #define IP_LOOPBACK_ADDR(addr) \
3183 (((addr) & N_IN_CLASSA_NET == N_IN_LOOPBACK_NET))
3184
3185 extern int ip_debug;
3186 extern uint_t ip_thread_data;
3187 extern krwlock_t ip_thread_rwlock;
3188 extern list_t ip_thread_list;
3189
3190 #ifdef IP_DEBUG
3191 #include <sys/debug.h>
3192 #include <sys/promif.h>
3193
3194 #define ip0dbg(a) printf a
3195 #define ip1dbg(a) if (ip_debug > 2) printf a
3196 #define ip2dbg(a) if (ip_debug > 3) printf a
3197 #define ip3dbg(a) if (ip_debug > 4) printf a
3198 #else
3199 #define ip0dbg(a) /* */
3200 #define ip1dbg(a) /* */
3201 #define ip2dbg(a) /* */
3202 #define ip3dbg(a) /* */
3203 #endif /* IP_DEBUG */
3204
3205 /* Default MAC-layer address string length for mac_colon_addr */
3206 #define MAC_STR_LEN 128
3207
3208 struct mac_header_info_s;
3209
3210 extern void ill_frag_timer(void *);
3211 extern ill_t *ill_first(int, int, ill_walk_context_t *, ip_stack_t *);
3212 extern ill_t *ill_next(ill_walk_context_t *, ill_t *);
3213 extern void ill_frag_timer_start(ill_t *);
3214 extern void ill_nic_event_dispatch(ill_t *, lif_if_t, nic_event_t,
3215 nic_event_data_t, size_t);
3216 extern mblk_t *ip_carve_mp(mblk_t **, ssize_t);
3217 extern mblk_t *ip_dlpi_alloc(size_t, t_uscalar_t);
3218 extern mblk_t *ip_dlnotify_alloc(uint_t, uint_t);
3219 extern mblk_t *ip_dlnotify_alloc2(uint_t, uint_t, uint_t);
3220 extern char *ip_dot_addr(ipaddr_t, char *);
3221 extern const char *mac_colon_addr(const uint8_t *, size_t, char *, size_t);
3222 extern int ip_lwput(queue_t *, mblk_t *);
3223 extern boolean_t icmp_err_rate_limit(ip_stack_t *);
3224 extern void icmp_frag_needed(mblk_t *, int, ip_recv_attr_t *);
3225 extern mblk_t *icmp_inbound_v4(mblk_t *, ip_recv_attr_t *);
3226 extern void icmp_time_exceeded(mblk_t *, uint8_t, ip_recv_attr_t *);
3227 extern void icmp_unreachable(mblk_t *, uint8_t, ip_recv_attr_t *);
3228 extern boolean_t ip_ipsec_policy_inherit(conn_t *, conn_t *, ip_recv_attr_t *);
3229 extern void *ip_pullup(mblk_t *, ssize_t, ip_recv_attr_t *);
3230 extern void ip_setl2src(mblk_t *, ip_recv_attr_t *, ill_t *);
3231 extern mblk_t *ip_check_and_align_header(mblk_t *, uint_t, ip_recv_attr_t *);
3232 extern mblk_t *ip_check_length(mblk_t *, uchar_t *, ssize_t, uint_t, uint_t,
3233 ip_recv_attr_t *);
3234 extern mblk_t *ip_check_optlen(mblk_t *, ipha_t *, uint_t, uint_t,
3235 ip_recv_attr_t *);
3236 extern mblk_t *ip_fix_dbref(mblk_t *, ip_recv_attr_t *);
3237 extern uint_t ip_cksum(mblk_t *, int, uint32_t);
3238 extern int ip_close(queue_t *, int, cred_t *);
3239 extern uint16_t ip_csum_hdr(ipha_t *);
3240 extern void ip_forward_xmit_v4(nce_t *, ill_t *, mblk_t *, ipha_t *,
3241 ip_recv_attr_t *, uint32_t, uint32_t);
3242 extern boolean_t ip_forward_options(mblk_t *, ipha_t *, ill_t *,
3243 ip_recv_attr_t *);
3244 extern int ip_fragment_v4(mblk_t *, nce_t *, iaflags_t, uint_t, uint32_t,
3245 uint32_t, zoneid_t, zoneid_t, pfirepostfrag_t postfragfn,
3246 uintptr_t *cookie);
3247 extern void ip_proto_not_sup(mblk_t *, ip_recv_attr_t *);
3248 extern void ip_ire_g_fini(void);
3249 extern void ip_ire_g_init(void);
3250 extern void ip_ire_fini(ip_stack_t *);
3251 extern void ip_ire_init(ip_stack_t *);
3252 extern void ip_mdata_to_mhi(ill_t *, mblk_t *, struct mac_header_info_s *);
3253 extern int ip_openv4(queue_t *q, dev_t *devp, int flag, int sflag,
3254 cred_t *credp);
3255 extern int ip_openv6(queue_t *q, dev_t *devp, int flag, int sflag,
3256 cred_t *credp);
3257 extern int ip_reassemble(mblk_t *, ipf_t *, uint_t, boolean_t, ill_t *,
3258 size_t);
3259 extern int ip_rput(queue_t *, mblk_t *);
3260 extern void ip_input(ill_t *, ill_rx_ring_t *, mblk_t *,
3261 struct mac_header_info_s *);
3262 extern void ip_input_v6(ill_t *, ill_rx_ring_t *, mblk_t *,
3263 struct mac_header_info_s *);
3264 extern mblk_t *ip_input_common_v4(ill_t *, ill_rx_ring_t *, mblk_t *,
3265 struct mac_header_info_s *, squeue_t *, mblk_t **, uint_t *);
3266 extern mblk_t *ip_input_common_v6(ill_t *, ill_rx_ring_t *, mblk_t *,
3267 struct mac_header_info_s *, squeue_t *, mblk_t **, uint_t *);
3268 extern void ill_input_full_v4(mblk_t *, void *, void *,
3269 ip_recv_attr_t *, rtc_t *);
3270 extern void ill_input_short_v4(mblk_t *, void *, void *,
3271 ip_recv_attr_t *, rtc_t *);
3272 extern void ill_input_full_v6(mblk_t *, void *, void *,
3273 ip_recv_attr_t *, rtc_t *);
3274 extern void ill_input_short_v6(mblk_t *, void *, void *,
3275 ip_recv_attr_t *, rtc_t *);
3276 extern ipaddr_t ip_input_options(ipha_t *, ipaddr_t, mblk_t *,
3277 ip_recv_attr_t *, int *);
3278 extern boolean_t ip_input_local_options(mblk_t *, ipha_t *, ip_recv_attr_t *);
3279 extern mblk_t *ip_input_fragment(mblk_t *, ipha_t *, ip_recv_attr_t *);
3280 extern mblk_t *ip_input_fragment_v6(mblk_t *, ip6_t *, ip6_frag_t *, uint_t,
3281 ip_recv_attr_t *);
3282 extern void ip_input_post_ipsec(mblk_t *, ip_recv_attr_t *);
3283 extern void ip_fanout_v4(mblk_t *, ipha_t *, ip_recv_attr_t *);
3284 extern void ip_fanout_v6(mblk_t *, ip6_t *, ip_recv_attr_t *);
3285 extern void ip_fanout_proto_conn(conn_t *, mblk_t *, ipha_t *, ip6_t *,
3286 ip_recv_attr_t *);
3287 extern void ip_fanout_proto_v4(mblk_t *, ipha_t *, ip_recv_attr_t *);
3288 extern void ip_fanout_send_icmp_v4(mblk_t *, uint_t, uint_t,
3289 ip_recv_attr_t *);
3290 extern void ip_fanout_udp_conn(conn_t *, mblk_t *, ipha_t *, ip6_t *,
3291 ip_recv_attr_t *);
3292 extern void ip_fanout_udp_multi_v4(mblk_t *, ipha_t *, uint16_t, uint16_t,
3293 ip_recv_attr_t *);
3294 extern mblk_t *zero_spi_check(mblk_t *, ip_recv_attr_t *);
3295 extern void ip_build_hdrs_v4(uchar_t *, uint_t, const ip_pkt_t *, uint8_t);
3296 extern int ip_find_hdr_v4(ipha_t *, ip_pkt_t *, boolean_t);
3297 extern int ip_total_hdrs_len_v4(const ip_pkt_t *);
3298
3299 extern mblk_t *ip_accept_tcp(ill_t *, ill_rx_ring_t *, squeue_t *,
3300 mblk_t *, mblk_t **, uint_t *cnt);
3301 extern void ip_rput_dlpi(ill_t *, mblk_t *);
3302 extern void ip_rput_notdata(ill_t *, mblk_t *);
3303
3304 extern void ip_mib2_add_ip_stats(mib2_ipIfStatsEntry_t *,
3305 mib2_ipIfStatsEntry_t *);
3306 extern void ip_mib2_add_icmp6_stats(mib2_ipv6IfIcmpEntry_t *,
3307 mib2_ipv6IfIcmpEntry_t *);
3308 extern void ip_rput_other(ipsq_t *, queue_t *, mblk_t *, void *);
3309 extern ire_t *ip_check_multihome(void *, ire_t *, ill_t *);
3310 extern void ip_send_potential_redirect_v4(mblk_t *, ipha_t *, ire_t *,
3311 ip_recv_attr_t *);
3312 extern int ip_set_destination_v4(ipaddr_t *, ipaddr_t, ipaddr_t,
3313 ip_xmit_attr_t *, iulp_t *, uint32_t, uint_t);
3314 extern int ip_set_destination_v6(in6_addr_t *, const in6_addr_t *,
3315 const in6_addr_t *, ip_xmit_attr_t *, iulp_t *, uint32_t, uint_t);
3316
3317 extern int ip_output_simple(mblk_t *, ip_xmit_attr_t *);
3318 extern int ip_output_simple_v4(mblk_t *, ip_xmit_attr_t *);
3319 extern int ip_output_simple_v6(mblk_t *, ip_xmit_attr_t *);
3320 extern int ip_output_options(mblk_t *, ipha_t *, ip_xmit_attr_t *,
3321 ill_t *);
3322 extern void ip_output_local_options(ipha_t *, ip_stack_t *);
3323
3324 extern ip_xmit_attr_t *conn_get_ixa(conn_t *, boolean_t);
3325 extern ip_xmit_attr_t *conn_get_ixa_tryhard(conn_t *, boolean_t);
3326 extern ip_xmit_attr_t *conn_replace_ixa(conn_t *, ip_xmit_attr_t *);
3327 extern ip_xmit_attr_t *conn_get_ixa_exclusive(conn_t *);
3328 extern ip_xmit_attr_t *ip_xmit_attr_duplicate(ip_xmit_attr_t *);
3329 extern void ip_xmit_attr_replace_tsl(ip_xmit_attr_t *, ts_label_t *);
3330 extern void ip_xmit_attr_restore_tsl(ip_xmit_attr_t *, cred_t *);
3331 boolean_t ip_recv_attr_replace_label(ip_recv_attr_t *, ts_label_t *);
3332 extern void ixa_inactive(ip_xmit_attr_t *);
3333 extern void ixa_refrele(ip_xmit_attr_t *);
3334 extern boolean_t ixa_check_drain_insert(conn_t *, ip_xmit_attr_t *);
3335 extern void ixa_cleanup(ip_xmit_attr_t *);
3336 extern void ira_cleanup(ip_recv_attr_t *, boolean_t);
3337 extern void ixa_safe_copy(ip_xmit_attr_t *, ip_xmit_attr_t *);
3338
3339 extern int conn_ip_output(mblk_t *, ip_xmit_attr_t *);
3340 extern boolean_t ip_output_verify_local(ip_xmit_attr_t *);
3341 extern mblk_t *ip_output_process_local(mblk_t *, ip_xmit_attr_t *, boolean_t,
3342 boolean_t, conn_t *);
3343
3344 extern int conn_opt_get(conn_opt_arg_t *, t_scalar_t, t_scalar_t,
3345 uchar_t *);
3346 extern int conn_opt_set(conn_opt_arg_t *, t_scalar_t, t_scalar_t, uint_t,
3347 uchar_t *, boolean_t, cred_t *);
3348 extern boolean_t conn_same_as_last_v4(conn_t *, sin_t *);
3349 extern boolean_t conn_same_as_last_v6(conn_t *, sin6_t *);
3350 extern int conn_update_label(const conn_t *, const ip_xmit_attr_t *,
3351 const in6_addr_t *, ip_pkt_t *);
3352
3353 extern int ip_opt_set_multicast_group(conn_t *, t_scalar_t,
3354 uchar_t *, boolean_t, boolean_t);
3355 extern int ip_opt_set_multicast_sources(conn_t *, t_scalar_t,
3356 uchar_t *, boolean_t, boolean_t);
3357 extern int conn_getsockname(conn_t *, struct sockaddr *, uint_t *);
3358 extern int conn_getpeername(conn_t *, struct sockaddr *, uint_t *);
3359
3360 extern int conn_build_hdr_template(conn_t *, uint_t, uint_t,
3361 const in6_addr_t *, const in6_addr_t *, uint32_t);
3362 extern mblk_t *conn_prepend_hdr(ip_xmit_attr_t *, const ip_pkt_t *,
3363 const in6_addr_t *, const in6_addr_t *, uint8_t, uint32_t, uint_t,
3364 mblk_t *, uint_t, uint_t, uint32_t *, int *);
3365 extern void ip_attr_newdst(ip_xmit_attr_t *);
3366 extern void ip_attr_nexthop(const ip_pkt_t *, const ip_xmit_attr_t *,
3367 const in6_addr_t *, in6_addr_t *);
3368 extern int conn_connect(conn_t *, iulp_t *, uint32_t);
3369 extern int ip_attr_connect(const conn_t *, ip_xmit_attr_t *,
3370 const in6_addr_t *, const in6_addr_t *, const in6_addr_t *, in_port_t,
3371 in6_addr_t *, iulp_t *, uint32_t);
3372 extern int conn_inherit_parent(conn_t *, conn_t *);
3373
3374 extern void conn_ixa_cleanup(conn_t *connp, void *arg);
3375
3376 extern boolean_t conn_wantpacket(conn_t *, ip_recv_attr_t *, ipha_t *);
3377 extern uint_t ip_type_v4(ipaddr_t, ip_stack_t *);
3378 extern uint_t ip_type_v6(const in6_addr_t *, ip_stack_t *);
3379
3380 extern int ip_wput_nondata(queue_t *, mblk_t *);
3381 extern int ip_wsrv(queue_t *);
3382 extern char *ip_nv_lookup(nv_t *, int);
3383 extern boolean_t ip_local_addr_ok_v6(const in6_addr_t *, const in6_addr_t *);
3384 extern boolean_t ip_remote_addr_ok_v6(const in6_addr_t *, const in6_addr_t *);
3385 extern ipaddr_t ip_massage_options(ipha_t *, netstack_t *);
3386 extern ipaddr_t ip_net_mask(ipaddr_t);
3387 extern void arp_bringup_done(ill_t *, int);
3388 extern void arp_replumb_done(ill_t *, int);
3389
3390 extern struct qinit iprinitv6;
3391
3392 extern void ipmp_init(ip_stack_t *);
3393 extern void ipmp_destroy(ip_stack_t *);
3394 extern ipmp_grp_t *ipmp_grp_create(const char *, phyint_t *);
3395 extern void ipmp_grp_destroy(ipmp_grp_t *);
3396 extern void ipmp_grp_info(const ipmp_grp_t *, lifgroupinfo_t *);
3397 extern int ipmp_grp_rename(ipmp_grp_t *, const char *);
3398 extern ipmp_grp_t *ipmp_grp_lookup(const char *, ip_stack_t *);
3399 extern int ipmp_grp_vet_phyint(ipmp_grp_t *, phyint_t *);
3400 extern ipmp_illgrp_t *ipmp_illgrp_create(ill_t *);
3401 extern void ipmp_illgrp_destroy(ipmp_illgrp_t *);
3402 extern ill_t *ipmp_illgrp_add_ipif(ipmp_illgrp_t *, ipif_t *);
3403 extern void ipmp_illgrp_del_ipif(ipmp_illgrp_t *, ipif_t *);
3404 extern ill_t *ipmp_illgrp_next_ill(ipmp_illgrp_t *);
3405 extern ill_t *ipmp_illgrp_hold_next_ill(ipmp_illgrp_t *);
3406 extern ill_t *ipmp_illgrp_hold_cast_ill(ipmp_illgrp_t *);
3407 extern ill_t *ipmp_illgrp_ipmp_ill(ipmp_illgrp_t *);
3408 extern void ipmp_illgrp_refresh_mtu(ipmp_illgrp_t *);
3409 extern ipmp_arpent_t *ipmp_illgrp_create_arpent(ipmp_illgrp_t *,
3410 boolean_t, ipaddr_t, uchar_t *, size_t, uint16_t);
3411 extern void ipmp_illgrp_destroy_arpent(ipmp_illgrp_t *, ipmp_arpent_t *);
3412 extern ipmp_arpent_t *ipmp_illgrp_lookup_arpent(ipmp_illgrp_t *, ipaddr_t *);
3413 extern void ipmp_illgrp_refresh_arpent(ipmp_illgrp_t *);
3414 extern void ipmp_illgrp_mark_arpent(ipmp_illgrp_t *, ipmp_arpent_t *);
3415 extern ill_t *ipmp_illgrp_find_ill(ipmp_illgrp_t *, uchar_t *, uint_t);
3416 extern void ipmp_illgrp_link_grp(ipmp_illgrp_t *, ipmp_grp_t *);
3417 extern int ipmp_illgrp_unlink_grp(ipmp_illgrp_t *);
3418 extern uint_t ipmp_ill_get_ipmp_ifindex(const ill_t *);
3419 extern void ipmp_ill_join_illgrp(ill_t *, ipmp_illgrp_t *);
3420 extern void ipmp_ill_leave_illgrp(ill_t *);
3421 extern ill_t *ipmp_ill_hold_ipmp_ill(ill_t *);
3422 extern ill_t *ipmp_ill_hold_xmit_ill(ill_t *, boolean_t);
3423 extern boolean_t ipmp_ill_is_active(ill_t *);
3424 extern void ipmp_ill_refresh_active(ill_t *);
3425 extern void ipmp_phyint_join_grp(phyint_t *, ipmp_grp_t *);
3426 extern void ipmp_phyint_leave_grp(phyint_t *);
3427 extern void ipmp_phyint_refresh_active(phyint_t *);
3428 extern ill_t *ipmp_ipif_bound_ill(const ipif_t *);
3429 extern ill_t *ipmp_ipif_hold_bound_ill(const ipif_t *);
3430 extern boolean_t ipmp_ipif_is_dataaddr(const ipif_t *);
3431 extern boolean_t ipmp_ipif_is_stubaddr(const ipif_t *);
3432 extern boolean_t ipmp_packet_is_probe(mblk_t *, ill_t *);
3433 extern void ipmp_ncec_delete_nce(ncec_t *);
3434 extern void ipmp_ncec_refresh_nce(ncec_t *);
3435
3436 extern void conn_drain_insert(conn_t *, idl_tx_list_t *);
3437 extern void conn_setqfull(conn_t *, boolean_t *);
3438 extern void conn_clrqfull(conn_t *, boolean_t *);
3439 extern int conn_ipsec_length(conn_t *);
3440 extern ipaddr_t ip_get_dst(ipha_t *);
3441 extern uint_t ip_get_pmtu(ip_xmit_attr_t *);
3442 extern uint_t ip_get_base_mtu(ill_t *, ire_t *);
3443 extern mblk_t *ip_output_attach_policy(mblk_t *, ipha_t *, ip6_t *,
3444 const conn_t *, ip_xmit_attr_t *);
3445 extern int ipsec_out_extra_length(ip_xmit_attr_t *);
3446 extern int ipsec_out_process(mblk_t *, ip_xmit_attr_t *);
3447 extern int ip_output_post_ipsec(mblk_t *, ip_xmit_attr_t *);
3448 extern void ipsec_out_to_in(ip_xmit_attr_t *, ill_t *ill,
3449 ip_recv_attr_t *);
3450
3451 extern void ire_cleanup(ire_t *);
3452 extern void ire_inactive(ire_t *);
3453 extern boolean_t irb_inactive(irb_t *);
3454 extern ire_t *ire_unlink(irb_t *);
3455
3456 #ifdef DEBUG
3457 extern boolean_t th_trace_ref(const void *, ip_stack_t *);
3458 extern void th_trace_unref(const void *);
3459 extern void th_trace_cleanup(const void *, boolean_t);
3460 extern void ire_trace_ref(ire_t *);
3461 extern void ire_untrace_ref(ire_t *);
3462 #endif
3463
3464 extern int ip_srcid_insert(const in6_addr_t *, zoneid_t, ip_stack_t *);
3465 extern int ip_srcid_remove(const in6_addr_t *, zoneid_t, ip_stack_t *);
3466 extern boolean_t ip_srcid_find_id(uint_t, in6_addr_t *, zoneid_t, boolean_t,
3467 netstack_t *);
3468 extern uint_t ip_srcid_find_addr(const in6_addr_t *, zoneid_t, netstack_t *);
3469
3470 extern uint8_t ipoptp_next(ipoptp_t *);
3471 extern uint8_t ipoptp_first(ipoptp_t *, ipha_t *);
3472 extern int ip_opt_get_user(conn_t *, uchar_t *);
3473 extern int ipsec_req_from_conn(conn_t *, ipsec_req_t *, int);
3474 extern int ip_snmp_get(queue_t *q, mblk_t *mctl, int level, boolean_t);
3475 extern int ip_snmp_set(queue_t *q, int, int, uchar_t *, int);
3476 extern void ip_process_ioctl(ipsq_t *, queue_t *, mblk_t *, void *);
3477 extern void ip_quiesce_conn(conn_t *);
3478 extern void ip_reprocess_ioctl(ipsq_t *, queue_t *, mblk_t *, void *);
3479 extern void ip_ioctl_finish(queue_t *, mblk_t *, int, int, ipsq_t *);
3480
3481 extern boolean_t ip_cmpbuf(const void *, uint_t, boolean_t, const void *,
3482 uint_t);
3483 extern boolean_t ip_allocbuf(void **, uint_t *, boolean_t, const void *,
3484 uint_t);
3485 extern void ip_savebuf(void **, uint_t *, boolean_t, const void *, uint_t);
3486
3487 extern boolean_t ipsq_pending_mp_cleanup(ill_t *, conn_t *);
3488 extern void conn_ioctl_cleanup(conn_t *);
3489
3490 extern void ip_unbind(conn_t *);
3491
3492 extern void tnet_init(void);
3493 extern void tnet_fini(void);
3494
3495 /*
3496 * Hook functions to enable cluster networking
3497 * On non-clustered systems these vectors must always be NULL.
3498 */
3499 extern int (*cl_inet_isclusterwide)(netstackid_t stack_id, uint8_t protocol,
3500 sa_family_t addr_family, uint8_t *laddrp, void *args);
3501 extern uint32_t (*cl_inet_ipident)(netstackid_t stack_id, uint8_t protocol,
3502 sa_family_t addr_family, uint8_t *laddrp, uint8_t *faddrp,
3503 void *args);
3504 extern int (*cl_inet_connect2)(netstackid_t stack_id, uint8_t protocol,
3505 boolean_t is_outgoing, sa_family_t addr_family, uint8_t *laddrp,
3506 in_port_t lport, uint8_t *faddrp, in_port_t fport, void *args);
3507 extern void (*cl_inet_getspi)(netstackid_t, uint8_t, uint8_t *, size_t,
3508 void *);
3509 extern void (*cl_inet_getspi)(netstackid_t stack_id, uint8_t protocol,
3510 uint8_t *ptr, size_t len, void *args);
3511 extern int (*cl_inet_checkspi)(netstackid_t stack_id, uint8_t protocol,
3512 uint32_t spi, void *args);
3513 extern void (*cl_inet_deletespi)(netstackid_t stack_id, uint8_t protocol,
3514 uint32_t spi, void *args);
3515 extern void (*cl_inet_idlesa)(netstackid_t, uint8_t, uint32_t,
3516 sa_family_t, in6_addr_t, in6_addr_t, void *);
3517
3518
3519 /* Hooks for CGTP (multirt routes) filtering module */
3520 #define CGTP_FILTER_REV_1 1
3521 #define CGTP_FILTER_REV_2 2
3522 #define CGTP_FILTER_REV_3 3
3523 #define CGTP_FILTER_REV CGTP_FILTER_REV_3
3524
3525 /* cfo_filter and cfo_filter_v6 hooks return values */
3526 #define CGTP_IP_PKT_NOT_CGTP 0
3527 #define CGTP_IP_PKT_PREMIUM 1
3528 #define CGTP_IP_PKT_DUPLICATE 2
3529
3530 /* Version 3 of the filter interface */
3531 typedef struct cgtp_filter_ops {
3532 int cfo_filter_rev; /* CGTP_FILTER_REV_3 */
3533 int (*cfo_change_state)(netstackid_t, int);
3534 int (*cfo_add_dest_v4)(netstackid_t, ipaddr_t, ipaddr_t,
3535 ipaddr_t, ipaddr_t);
3536 int (*cfo_del_dest_v4)(netstackid_t, ipaddr_t, ipaddr_t);
3537 int (*cfo_add_dest_v6)(netstackid_t, in6_addr_t *, in6_addr_t *,
3538 in6_addr_t *, in6_addr_t *);
3539 int (*cfo_del_dest_v6)(netstackid_t, in6_addr_t *, in6_addr_t *);
3540 int (*cfo_filter)(netstackid_t, uint_t, mblk_t *);
3541 int (*cfo_filter_v6)(netstackid_t, uint_t, ip6_t *,
3542 ip6_frag_t *);
3543 } cgtp_filter_ops_t;
3544
3545 #define CGTP_MCAST_SUCCESS 1
3546
3547 /*
3548 * The separate CGTP module needs this global symbol so that it
3549 * can check the version and determine whether to use the old or the new
3550 * version of the filtering interface.
3551 */
3552 extern int ip_cgtp_filter_rev;
3553
3554 extern int ip_cgtp_filter_supported(void);
3555 extern int ip_cgtp_filter_register(netstackid_t, cgtp_filter_ops_t *);
3556 extern int ip_cgtp_filter_unregister(netstackid_t);
3557 extern int ip_cgtp_filter_is_registered(netstackid_t);
3558
3559 /*
3560 * rr_ring_state cycles in the order shown below from RR_FREE through
3561 * RR_FREE_IN_PROG and back to RR_FREE.
3562 */
3563 typedef enum {
3564 RR_FREE, /* Free slot */
3565 RR_SQUEUE_UNBOUND, /* Ring's squeue is unbound */
3566 RR_SQUEUE_BIND_INPROG, /* Ring's squeue bind in progress */
3567 RR_SQUEUE_BOUND, /* Ring's squeue bound to cpu */
3568 RR_FREE_INPROG /* Ring is being freed */
3569 } ip_ring_state_t;
3570
3571 #define ILL_MAX_RINGS 256 /* Max num of rx rings we can manage */
3572 #define ILL_POLLING 0x01 /* Polling in use */
3573
3574 /*
3575 * These functions pointer types are exported by the mac/dls layer.
3576 * we need to duplicate the definitions here because we cannot
3577 * include mac/dls header files here.
3578 */
3579 typedef boolean_t (*ip_mac_intr_disable_t)(void *);
3580 typedef int (*ip_mac_intr_enable_t)(void *);
3581 typedef ip_mac_tx_cookie_t (*ip_dld_tx_t)(void *, mblk_t *,
3582 uint64_t, uint16_t);
3583 typedef void (*ip_flow_enable_t)(void *, ip_mac_tx_cookie_t);
3584 typedef void *(*ip_dld_callb_t)(void *,
3585 ip_flow_enable_t, void *);
3586 typedef boolean_t (*ip_dld_fctl_t)(void *, ip_mac_tx_cookie_t);
3587 typedef boolean_t (*ip_mac_ipcheck_t)(void *, boolean_t,
3588 in6_addr_t *);
3589 typedef int (*ip_capab_func_t)(void *, uint_t,
3590 void *, uint_t);
3591
3592 /*
3593 * POLLING README
3594 * sq_get_pkts() is called to pick packets from softring in poll mode. It
3595 * calls rr_rx to get the chain and process it with rr_ip_accept.
3596 * rr_rx = mac_soft_ring_poll() to pick packets
3597 * rr_ip_accept = ip_accept_tcp() to process packets
3598 */
3599
3600 /*
3601 * XXX: With protocol, service specific squeues, they will have
3602 * specific acceptor functions.
3603 */
3604 typedef mblk_t *(*ip_mac_rx_t)(void *, size_t);
3605 typedef mblk_t *(*ip_accept_t)(ill_t *, ill_rx_ring_t *,
3606 squeue_t *, mblk_t *, mblk_t **, uint_t *);
3607
3608 /*
3609 * rr_intr_enable, rr_intr_disable, rr_rx_handle, rr_rx:
3610 * May be accessed while in the squeue AND after checking that SQS_POLL_CAPAB
3611 * is set.
3612 *
3613 * rr_ring_state: Protected by ill_lock.
3614 */
3615 struct ill_rx_ring {
3616 ip_mac_intr_disable_t rr_intr_disable; /* Interrupt disabling func */
3617 ip_mac_intr_enable_t rr_intr_enable; /* Interrupt enabling func */
3618 void *rr_intr_handle; /* Handle interrupt funcs */
3619 ip_mac_rx_t rr_rx; /* Driver receive function */
3620 ip_accept_t rr_ip_accept; /* IP accept function */
3621 void *rr_rx_handle; /* Handle for Rx ring */
3622 squeue_t *rr_sqp; /* Squeue the ring is bound to */
3623 ill_t *rr_ill; /* back pointer to ill */
3624 ip_ring_state_t rr_ring_state; /* State of this ring */
3625 };
3626
3627 /*
3628 * IP - DLD direct function call capability
3629 * Suffixes, df - dld function, dh - dld handle,
3630 * cf - client (IP) function, ch - client handle
3631 */
3632 typedef struct ill_dld_direct_s { /* DLD provided driver Tx */
3633 ip_dld_tx_t idd_tx_df; /* str_mdata_fastpath_put */
3634 void *idd_tx_dh; /* dld_str_t *dsp */
3635 ip_dld_callb_t idd_tx_cb_df; /* mac_tx_srs_notify */
3636 void *idd_tx_cb_dh; /* mac_client_handle_t *mch */
3637 ip_dld_fctl_t idd_tx_fctl_df; /* mac_tx_is_flow_blocked */
3638 void *idd_tx_fctl_dh; /* mac_client_handle */
3639 } ill_dld_direct_t;
3640
3641 /* IP - DLD direct function call to check if an IP is allowed */
3642 typedef struct ill_dld_ipcheck_s {
3643 ip_mac_ipcheck_t idi_allowed_df;
3644 void *idi_allowed_dh;
3645 } ill_dld_ipcheck_t;
3646
3647 /* IP - DLD polling capability */
3648 typedef struct ill_dld_poll_s {
3649 ill_rx_ring_t idp_ring_tbl[ILL_MAX_RINGS];
3650 } ill_dld_poll_t;
3651
3652 /* Describes ill->ill_dld_capab */
3653 struct ill_dld_capab_s {
3654 ip_capab_func_t idc_capab_df; /* dld_capab_func */
3655 void *idc_capab_dh; /* dld_str_t *dsp */
3656 ill_dld_direct_t idc_direct;
3657 ill_dld_poll_t idc_poll;
3658 ill_dld_ipcheck_t idc_ipcheck;
3659 };
3660
3661 /*
3662 * IP squeues exports
3663 */
3664 extern boolean_t ip_squeue_fanout;
3665
3666 #define IP_SQUEUE_GET(hint) ip_squeue_random(hint)
3667
3668 extern void ip_squeue_init(void (*)(squeue_t *));
3669 extern squeue_t *ip_squeue_random(uint_t);
3670 extern squeue_t *ip_squeue_get(ill_rx_ring_t *);
3671 extern squeue_t *ip_squeue_getfree(pri_t);
3672 extern int ip_squeue_cpu_move(squeue_t *, processorid_t);
3673 extern void *ip_squeue_add_ring(ill_t *, void *);
3674 extern void ip_squeue_bind_ring(ill_t *, ill_rx_ring_t *, processorid_t);
3675 extern void ip_squeue_clean_ring(ill_t *, ill_rx_ring_t *);
3676 extern void ip_squeue_quiesce_ring(ill_t *, ill_rx_ring_t *);
3677 extern void ip_squeue_restart_ring(ill_t *, ill_rx_ring_t *);
3678 extern void ip_squeue_clean_all(ill_t *);
3679 extern boolean_t ip_source_routed(ipha_t *, ip_stack_t *);
3680
3681 extern int tcp_wput(queue_t *, mblk_t *);
3682
3683 extern int ip_fill_mtuinfo(conn_t *, ip_xmit_attr_t *,
3684 struct ip6_mtuinfo *);
3685 extern hook_t *ipobs_register_hook(netstack_t *, pfv_t);
3686 extern void ipobs_unregister_hook(netstack_t *, hook_t *);
3687 extern void ipobs_hook(mblk_t *, int, zoneid_t, zoneid_t, const ill_t *,
3688 ip_stack_t *);
3689 typedef void (*ipsq_func_t)(ipsq_t *, queue_t *, mblk_t *, void *);
3690
3691 extern void dce_g_init(void);
3692 extern void dce_g_destroy(void);
3693 extern void dce_stack_init(ip_stack_t *);
3694 extern void dce_stack_destroy(ip_stack_t *);
3695 extern void dce_cleanup(uint_t, ip_stack_t *);
3696 extern dce_t *dce_get_default(ip_stack_t *);
3697 extern dce_t *dce_lookup_pkt(mblk_t *, ip_xmit_attr_t *, uint_t *);
3698 extern dce_t *dce_lookup_v4(ipaddr_t, ip_stack_t *, uint_t *);
3699 extern dce_t *dce_lookup_v6(const in6_addr_t *, uint_t, ip_stack_t *,
3700 uint_t *);
3701 extern dce_t *dce_lookup_and_add_v4(ipaddr_t, ip_stack_t *);
3702 extern dce_t *dce_lookup_and_add_v6(const in6_addr_t *, uint_t,
3703 ip_stack_t *);
3704 extern int dce_update_uinfo_v4(ipaddr_t, iulp_t *, ip_stack_t *);
3705 extern int dce_update_uinfo_v6(const in6_addr_t *, uint_t, iulp_t *,
3706 ip_stack_t *);
3707 extern int dce_update_uinfo(const in6_addr_t *, uint_t, iulp_t *,
3708 ip_stack_t *);
3709 extern void dce_increment_generation(dce_t *);
3710 extern void dce_increment_all_generations(boolean_t, ip_stack_t *);
3711 extern void dce_refrele(dce_t *);
3712 extern void dce_refhold(dce_t *);
3713 extern void dce_refrele_notr(dce_t *);
3714 extern void dce_refhold_notr(dce_t *);
3715 mblk_t *ip_snmp_get_mib2_ip_dce(queue_t *, mblk_t *, ip_stack_t *ipst);
3716
3717 extern ip_laddr_t ip_laddr_verify_v4(ipaddr_t, zoneid_t,
3718 ip_stack_t *, boolean_t);
3719 extern ip_laddr_t ip_laddr_verify_v6(const in6_addr_t *, zoneid_t,
3720 ip_stack_t *, boolean_t, uint_t);
3721 extern int ip_laddr_fanout_insert(conn_t *);
3722
3723 extern boolean_t ip_verify_src(mblk_t *, ip_xmit_attr_t *, uint_t *);
3724 extern int ip_verify_ire(mblk_t *, ip_xmit_attr_t *);
3725
3726 extern mblk_t *ip_xmit_attr_to_mblk(ip_xmit_attr_t *);
3727 extern boolean_t ip_xmit_attr_from_mblk(mblk_t *, ip_xmit_attr_t *);
3728 extern mblk_t *ip_xmit_attr_free_mblk(mblk_t *);
3729 extern mblk_t *ip_recv_attr_to_mblk(ip_recv_attr_t *);
3730 extern boolean_t ip_recv_attr_from_mblk(mblk_t *, ip_recv_attr_t *);
3731 extern mblk_t *ip_recv_attr_free_mblk(mblk_t *);
3732 extern boolean_t ip_recv_attr_is_mblk(mblk_t *);
3733
3734 #ifdef __PRAGMA_REDEFINE_EXTNAME
3735 #pragma redefine_extname inet_ntop _inet_ntop
3736 #pragma redefine_extname inet_pton _inet_pton
3737 #else
3738 #define inet_ntop _inet_ntop
3739 #define inet_pton _inet_pton
3740 #endif /* __PRAGMA_REDEFINE_EXTNAME */
3741
3742 extern char *inet_ntop(int, const void *, char *, int);
3743 extern int inet_pton(int, char *, void *);
3744
3745 /*
3746 * Squeue tags. Tags only need to be unique when the callback function is the
3747 * same to distinguish between different calls, but we use unique tags for
3748 * convenience anyway.
3749 */
3750 #define SQTAG_IP_INPUT 1
3751 #define SQTAG_TCP_INPUT_ICMP_ERR 2
3752 #define SQTAG_TCP6_INPUT_ICMP_ERR 3
3753 #define SQTAG_IP_TCP_INPUT 4
3754 #define SQTAG_IP6_TCP_INPUT 5
3755 #define SQTAG_IP_TCP_CLOSE 6
3756 #define SQTAG_TCP_OUTPUT 7
3757 #define SQTAG_TCP_TIMER 8
3758 #define SQTAG_TCP_TIMEWAIT 9
3759 #define SQTAG_TCP_ACCEPT_FINISH 10
3760 #define SQTAG_TCP_ACCEPT_FINISH_Q0 11
3761 #define SQTAG_TCP_ACCEPT_PENDING 12
3762 #define SQTAG_TCP_LISTEN_DISCON 13
3763 #define SQTAG_TCP_CONN_REQ_1 14
3764 #define SQTAG_TCP_EAGER_BLOWOFF 15
3765 #define SQTAG_TCP_EAGER_CLEANUP 16
3766 #define SQTAG_TCP_EAGER_CLEANUP_Q0 17
3767 #define SQTAG_TCP_CONN_IND 18
3768 #define SQTAG_TCP_RSRV 19
3769 #define SQTAG_TCP_ABORT_BUCKET 20
3770 #define SQTAG_TCP_REINPUT 21
3771 #define SQTAG_TCP_REINPUT_EAGER 22
3772 #define SQTAG_TCP_INPUT_MCTL 23
3773 #define SQTAG_TCP_RPUTOTHER 24
3774 #define SQTAG_IP_PROTO_AGAIN 25
3775 #define SQTAG_IP_FANOUT_TCP 26
3776 #define SQTAG_IPSQ_CLEAN_RING 27
3777 #define SQTAG_TCP_WPUT_OTHER 28
3778 #define SQTAG_TCP_CONN_REQ_UNBOUND 29
3779 #define SQTAG_TCP_SEND_PENDING 30
3780 #define SQTAG_BIND_RETRY 31
3781 #define SQTAG_UDP_FANOUT 32
3782 #define SQTAG_UDP_INPUT 33
3783 #define SQTAG_UDP_WPUT 34
3784 #define SQTAG_UDP_OUTPUT 35
3785 #define SQTAG_TCP_KSSL_INPUT 36
3786 #define SQTAG_TCP_DROP_Q0 37
3787 #define SQTAG_TCP_CONN_REQ_2 38
3788 #define SQTAG_IP_INPUT_RX_RING 39
3789 #define SQTAG_SQUEUE_CHANGE 40
3790 #define SQTAG_CONNECT_FINISH 41
3791 #define SQTAG_SYNCHRONOUS_OP 42
3792 #define SQTAG_TCP_SHUTDOWN_OUTPUT 43
3793 #define SQTAG_TCP_IXA_CLEANUP 44
3794 #define SQTAG_TCP_SEND_SYNACK 45
3795
3796 extern sin_t sin_null; /* Zero address for quick clears */
3797 extern sin6_t sin6_null; /* Zero address for quick clears */
3798
3799 #endif /* _KERNEL */
3800
3801 #ifdef __cplusplus
3802 }
3803 #endif
3804
3805 #endif /* _INET_IP_H */