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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 * Copyright 2015, Joyent, Inc.
25 */
26
27 #include <sys/types.h>
28 #include <sys/stream.h>
29 #define _SUN_TPI_VERSION 2
30 #include <sys/tihdr.h>
31 #include <sys/socket.h>
32 #include <sys/xti_xtiopt.h>
33 #include <sys/xti_inet.h>
34
35 #include <inet/common.h>
36 #include <netinet/ip6.h>
37 #include <inet/ip.h>
38 #include <inet/udp_impl.h>
39 /*
40 * MK_XXX Following 2 includes temporary to import ip6_rthdr_t
41 * definition. May not be needed if we fix ip6_dg_snd_attrs_t
42 * to do all extension headers in identical manner.
43 */
44 #include <net/if.h>
45 #include <inet/ip6.h>
46
47 #include <netinet/in.h>
48 #include <netinet/udp.h>
49 #include <inet/optcom.h>
50
51 /*
52 * Table of all known options handled on a UDP protocol stack.
53 *
54 * Note: This table contains options processed by both UDP and IP levels
55 * and is the superset of options that can be performed on a UDP over IP
56 * stack.
57 */
58 opdes_t udp_opt_arr[] = {
59
60 { SO_DEBUG, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
61 { SO_DONTROUTE, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
62 { SO_USELOOPBACK, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0
63 },
64 { SO_BROADCAST, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
65 { SO_REUSEADDR, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
66 { SO_TYPE, SOL_SOCKET, OA_R, OA_R, OP_NP, 0, sizeof (int), 0 },
67 { SO_SNDBUF, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
68 { SO_RCVBUF, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
69 { SO_SNDTIMEO, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0,
70 sizeof (struct timeval), 0 },
71 { SO_RCVTIMEO, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0,
72 sizeof (struct timeval), 0 },
73 { SO_DGRAM_ERRIND, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int),
74 0 },
75 { SO_RECVUCRED, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0
76 },
77 { SO_ALLZONES, SOL_SOCKET, OA_R, OA_RW, OP_CONFIG, 0, sizeof (int),
78 0 },
79 { SO_VRRP, SOL_SOCKET, OA_RW, OA_RW, OP_CONFIG, 0, sizeof (int), 0 },
80 { SO_TIMESTAMP, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0
81 },
82 { SO_ANON_MLP, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int),
83 0 },
84 { SO_MAC_EXEMPT, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int),
85 0 },
86 { SO_MAC_IMPLICIT, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int),
87 0 },
88 /*
89 * The maximum size reported here depends on the maximum value for
90 * ucredsize; unfortunately, we can't add ucredsize here so we need
91 * to estimate here. Before it was 512 or 384 + NGROUPS_UMAX * sizeof (gid_t);
92 * as we're changing NGROUPS_UMAX we now codify this here using NGROUPS_UMAX.
93 */
94 { SCM_UCRED, SOL_SOCKET, OA_W, OA_W, OP_NP, OP_VARLEN|OP_NODEFAULT,
95 384 + NGROUPS_UMAX * sizeof (gid_t), 0 },
96 { SO_EXCLBIND, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
97 { SO_DOMAIN, SOL_SOCKET, OA_R, OA_R, OP_NP, 0, sizeof (int), 0 },
98 { SO_PROTOTYPE, SOL_SOCKET, OA_R, OA_R, OP_NP, 0, sizeof (int), 0 },
99
100 { IP_OPTIONS, IPPROTO_IP, OA_RW, OA_RW, OP_NP,
101 (OP_VARLEN|OP_NODEFAULT),
102 IP_MAX_OPT_LENGTH + IP_ADDR_LEN, -1 /* not initialized */ },
103 { T_IP_OPTIONS, IPPROTO_IP, OA_RW, OA_RW, OP_NP,
104 (OP_VARLEN|OP_NODEFAULT),
105 IP_MAX_OPT_LENGTH + IP_ADDR_LEN, -1 /* not initialized */ },
106
107 { IP_TOS, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
108 { T_IP_TOS, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
109 { IP_TTL, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
110 { IP_RECVOPTS, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
111 { IP_RECVDSTADDR, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0
112 },
113 { IP_RECVIF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
114 { IP_RECVSLLA, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
115 { IP_RECVTTL, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int),
116 0 },
117 { IP_MULTICAST_IF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0,
118 sizeof (struct in_addr), 0 /* INADDR_ANY */ },
119
120 { IP_MULTICAST_LOOP, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_DEF_FN,
121 sizeof (uchar_t), -1 /* not initialized */},
122
123 { IP_MULTICAST_TTL, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_DEF_FN,
124 sizeof (uchar_t), -1 /* not initialized */ },
125
126 { IP_ADD_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP, OP_NODEFAULT,
127 sizeof (struct ip_mreq), -1 /* not initialized */ },
128
129 { IP_DROP_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP, OP_NODEFAULT,
130 sizeof (struct ip_mreq), -1 /* not initialized */ },
131
132 { IP_BLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP, OP_NODEFAULT,
133 sizeof (struct ip_mreq_source), -1 /* not initialized */ },
134
135 { IP_UNBLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP, OP_NODEFAULT,
136 sizeof (struct ip_mreq_source), -1 /* not initialized */ },
137
138 { IP_ADD_SOURCE_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP,
139 OP_NODEFAULT, sizeof (struct ip_mreq_source), -1 },
140
141 { IP_DROP_SOURCE_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP,
142 OP_NODEFAULT, sizeof (struct ip_mreq_source), -1 },
143
144 { IP_SEC_OPT, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_NODEFAULT,
145 sizeof (ipsec_req_t), -1 /* not initialized */ },
146
147 { IP_BOUND_IF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0,
148 sizeof (int), 0 /* no ifindex */ },
149
150 { IP_DHCPINIT_IF, IPPROTO_IP, OA_R, OA_RW, OP_CONFIG, 0,
151 sizeof (int), 0 },
152
153 { IP_UNSPEC_SRC, IPPROTO_IP, OA_R, OA_RW, OP_RAW, 0,
154 sizeof (int), 0 },
155
156 { IP_BROADCAST_TTL, IPPROTO_IP, OA_R, OA_RW, OP_RAW, 0, sizeof (uchar_t),
157 0 /* disabled */ },
158
159 { IP_PKTINFO, IPPROTO_IP, OA_RW, OA_RW, OP_NP,
160 (OP_NODEFAULT|OP_VARLEN),
161 sizeof (struct in_pktinfo), -1 /* not initialized */ },
162 { IP_NEXTHOP, IPPROTO_IP, OA_R, OA_RW, OP_CONFIG, 0,
163 sizeof (in_addr_t), -1 /* not initialized */ },
164
165 { IP_DONTFRAG, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
166
167 { MCAST_JOIN_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
168 OP_NODEFAULT, sizeof (struct group_req),
169 -1 /* not initialized */ },
170 { MCAST_LEAVE_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
171 OP_NODEFAULT, sizeof (struct group_req),
172 -1 /* not initialized */ },
173 { MCAST_BLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP,
174 OP_NODEFAULT, sizeof (struct group_source_req),
175 -1 /* not initialized */ },
176 { MCAST_UNBLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP,
177 OP_NODEFAULT, sizeof (struct group_source_req),
178 -1 /* not initialized */ },
179 { MCAST_JOIN_SOURCE_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
180 OP_NODEFAULT, sizeof (struct group_source_req),
181 -1 /* not initialized */ },
182 { MCAST_LEAVE_SOURCE_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
183 OP_NODEFAULT, sizeof (struct group_source_req),
184 -1 /* not initialized */ },
185
186 { IPV6_MULTICAST_IF, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
187 sizeof (int), 0 },
188
189 { IPV6_MULTICAST_HOPS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
190 OP_DEF_FN, sizeof (int), -1 /* not initialized */ },
191
192 { IPV6_MULTICAST_LOOP, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
193 OP_DEF_FN, sizeof (int), -1 /* not initialized */},
194
195 { IPV6_JOIN_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP, OP_NODEFAULT,
196 sizeof (struct ipv6_mreq), -1 /* not initialized */ },
197
198 { IPV6_LEAVE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
199 OP_NODEFAULT,
200 sizeof (struct ipv6_mreq), -1 /* not initialized */ },
201
202 { IPV6_UNICAST_HOPS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_DEF_FN,
203 sizeof (int), -1 /* not initialized */ },
204
205 { IPV6_BOUND_IF, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
206 sizeof (int), 0 /* no ifindex */ },
207
208 { IPV6_UNSPEC_SRC, IPPROTO_IPV6, OA_R, OA_RW, OP_RAW, 0,
209 sizeof (int), 0 },
210
211 { IPV6_PKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
212 (OP_NODEFAULT|OP_VARLEN),
213 sizeof (struct in6_pktinfo), -1 /* not initialized */ },
214 { IPV6_HOPLIMIT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
215 OP_NODEFAULT,
216 sizeof (int), -1 /* not initialized */ },
217 { IPV6_NEXTHOP, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
218 (OP_NODEFAULT|OP_VARLEN),
219 sizeof (sin6_t), -1 /* not initialized */ },
220 { IPV6_HOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
221 (OP_VARLEN|OP_NODEFAULT),
222 MAX_EHDR_LEN, -1 /* not initialized */ },
223 { IPV6_DSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
224 (OP_VARLEN|OP_NODEFAULT),
225 MAX_EHDR_LEN, -1 /* not initialized */ },
226 { IPV6_RTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
227 (OP_VARLEN|OP_NODEFAULT),
228 MAX_EHDR_LEN, -1 /* not initialized */ },
229 { IPV6_RTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
230 (OP_VARLEN|OP_NODEFAULT),
231 MAX_EHDR_LEN, -1 /* not initialized */ },
232 { IPV6_TCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
233 OP_NODEFAULT,
234 sizeof (int), -1 /* not initialized */ },
235 { IPV6_PATHMTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
236 OP_NODEFAULT,
237 sizeof (struct ip6_mtuinfo), -1 },
238 { IPV6_DONTFRAG, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
239 sizeof (int), 0 },
240 { IPV6_USE_MIN_MTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
241 sizeof (int), 0 },
242 { IPV6_V6ONLY, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
243 sizeof (int), 0 },
244
245 { IPV6_RECVPKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
246 sizeof (int), 0 },
247 { IPV6_RECVHOPLIMIT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
248 sizeof (int), 0 },
249 { IPV6_RECVHOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
250 sizeof (int), 0 },
251 { _OLD_IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
252 sizeof (int), 0 },
253 { IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
254 sizeof (int), 0 },
255 { IPV6_RECVRTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
256 sizeof (int), 0 },
257 { IPV6_RECVRTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
258 sizeof (int), 0 },
259 { IPV6_RECVPATHMTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
260 0, sizeof (int), 0 },
261 { IPV6_RECVTCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
262 sizeof (int), 0 },
263
264 { IPV6_SEC_OPT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_NODEFAULT,
265 sizeof (ipsec_req_t), -1 /* not initialized */ },
266 { IPV6_SRC_PREFERENCES, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0,
267 sizeof (uint32_t), IPV6_PREFER_SRC_DEFAULT },
268
269 { MCAST_JOIN_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
270 OP_NODEFAULT, sizeof (struct group_req),
271 -1 /* not initialized */ },
272 { MCAST_LEAVE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
273 OP_NODEFAULT, sizeof (struct group_req),
274 -1 /* not initialized */ },
275 { MCAST_BLOCK_SOURCE, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
276 OP_NODEFAULT, sizeof (struct group_source_req),
277 -1 /* not initialized */ },
278 { MCAST_UNBLOCK_SOURCE, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
279 OP_NODEFAULT, sizeof (struct group_source_req),
280 -1 /* not initialized */ },
281 { MCAST_JOIN_SOURCE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
282 OP_NODEFAULT, sizeof (struct group_source_req),
283 -1 /* not initialized */ },
284 { MCAST_LEAVE_SOURCE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
285 OP_NODEFAULT, sizeof (struct group_source_req),
286 -1 /* not initialized */ },
287
288 { UDP_ANONPRIVBIND, IPPROTO_UDP, OA_R, OA_RW, OP_PRIVPORT, 0,
289 sizeof (int), 0 },
290 { UDP_EXCLBIND, IPPROTO_UDP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0
291 },
292 { UDP_RCVHDR, IPPROTO_UDP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0
293 },
294 { UDP_NAT_T_ENDPOINT, IPPROTO_UDP, OA_RW, OA_RW, OP_PRIVPORT, 0, sizeof (int),
295 0 },
296 { UDP_SRCPORT_HASH, IPPROTO_UDP, OA_R, OA_RW, OP_CONFIG, 0, sizeof (int), 0 },
297 { UDP_SND_TO_CONNECTED, IPPROTO_UDP, OA_R, OA_RW, OP_CONFIG, 0, sizeof (int),
298 0 }
299 };
300
301 /*
302 * Table of all supported levels
303 * Note: Some levels (e.g. XTI_GENERIC) may be valid but may not have
304 * any supported options so we need this info separately.
305 *
306 * This is needed only for topmost tpi providers and is used only by
307 * XTI interfaces.
308 */
309 optlevel_t udp_valid_levels_arr[] = {
310 XTI_GENERIC,
311 SOL_SOCKET,
312 IPPROTO_UDP,
313 IPPROTO_IP,
314 IPPROTO_IPV6
315 };
316
317 #define UDP_VALID_LEVELS_CNT A_CNT(udp_valid_levels_arr)
318 #define UDP_OPT_ARR_CNT A_CNT(udp_opt_arr)
319
320 uint_t udp_max_optsize; /* initialized when UDP driver is loaded */
321
322 /*
323 * Initialize option database object for UDP
324 *
325 * This object represents database of options to search passed to
326 * {sock,tpi}optcom_req() interface routine to take care of option
327 * management and associated methods.
328 */
329
330 optdb_obj_t udp_opt_obj = {
331 udp_opt_default, /* UDP default value function pointer */
332 udp_tpi_opt_get, /* UDP get function pointer */
333 udp_tpi_opt_set, /* UDP set function pointer */
334 UDP_OPT_ARR_CNT, /* UDP option database count of entries */
335 udp_opt_arr, /* UDP option database */
336 UDP_VALID_LEVELS_CNT, /* UDP valid level count of entries */
337 udp_valid_levels_arr /* UDP valid level array */
338 };