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7fc02572 RW |
1 | /* |
2 | * Copyright (C) 2016 by Open Source Routing. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
7fc02572 RW |
19 | */ |
20 | ||
d3e2c74a | 21 | #include <zebra.h> |
ddfeb486 DL |
22 | |
23 | #ifdef OPEN_BSD | |
24 | ||
d3e2c74a RW |
25 | #include <netmpls/mpls.h> |
26 | #include "zebra/rt.h" | |
27 | #include "zebra/zebra_mpls.h" | |
28 | #include "zebra/debug.h" | |
364fed6b | 29 | #include "zebra/zebra_errors.h" |
b3f2b590 | 30 | #include "zebra/zebra_router.h" |
d3e2c74a RW |
31 | |
32 | #include "privs.h" | |
33 | #include "prefix.h" | |
34 | #include "interface.h" | |
35 | #include "log.h" | |
174482ef | 36 | #include "lib_errors.h" |
d3e2c74a RW |
37 | |
38 | extern struct zebra_privs_t zserv_privs; | |
39 | ||
40 | struct { | |
d7c0a89a | 41 | uint32_t rtseq; |
d62a17ae | 42 | int fd; |
d42127da | 43 | int ioctl_fd; |
d3e2c74a RW |
44 | } kr_state; |
45 | ||
d62a17ae | 46 | static int kernel_send_rtmsg_v4(int action, mpls_label_t in_label, |
81793ac1 | 47 | const zebra_nhlfe_t *nhlfe) |
d3e2c74a | 48 | { |
d62a17ae | 49 | struct iovec iov[5]; |
50 | struct rt_msghdr hdr; | |
51 | struct sockaddr_mpls sa_label_in, sa_label_out; | |
52 | struct sockaddr_in nexthop; | |
53 | int iovcnt = 0; | |
54 | int ret; | |
55 | ||
56 | if (IS_ZEBRA_DEBUG_KERNEL) | |
57 | zlog_debug("%s: 0x%x, label=%u", __func__, action, in_label); | |
58 | ||
59 | /* initialize header */ | |
60 | memset(&hdr, 0, sizeof(hdr)); | |
61 | hdr.rtm_version = RTM_VERSION; | |
62 | ||
63 | hdr.rtm_type = action; | |
64 | hdr.rtm_flags = RTF_UP; | |
65 | hdr.rtm_fmask = RTF_MPLS; | |
66 | hdr.rtm_seq = kr_state.rtseq++; /* overflow doesn't matter */ | |
67 | hdr.rtm_msglen = sizeof(hdr); | |
68 | hdr.rtm_hdrlen = sizeof(struct rt_msghdr); | |
69 | hdr.rtm_priority = 0; | |
70 | /* adjust iovec */ | |
71 | iov[iovcnt].iov_base = &hdr; | |
72 | iov[iovcnt++].iov_len = sizeof(hdr); | |
73 | ||
74 | /* in label */ | |
75 | memset(&sa_label_in, 0, sizeof(sa_label_in)); | |
76 | sa_label_in.smpls_len = sizeof(sa_label_in); | |
77 | sa_label_in.smpls_family = AF_MPLS; | |
78 | sa_label_in.smpls_label = htonl(in_label << MPLS_LABEL_OFFSET); | |
79 | /* adjust header */ | |
80 | hdr.rtm_flags |= RTF_MPLS | RTF_MPATH; | |
81 | hdr.rtm_addrs |= RTA_DST; | |
82 | hdr.rtm_msglen += sizeof(sa_label_in); | |
83 | /* adjust iovec */ | |
84 | iov[iovcnt].iov_base = &sa_label_in; | |
85 | iov[iovcnt++].iov_len = sizeof(sa_label_in); | |
86 | ||
87 | /* nexthop */ | |
88 | memset(&nexthop, 0, sizeof(nexthop)); | |
89 | nexthop.sin_len = sizeof(nexthop); | |
90 | nexthop.sin_family = AF_INET; | |
91 | nexthop.sin_addr = nhlfe->nexthop->gate.ipv4; | |
92 | /* adjust header */ | |
93 | hdr.rtm_flags |= RTF_GATEWAY; | |
94 | hdr.rtm_addrs |= RTA_GATEWAY; | |
95 | hdr.rtm_msglen += sizeof(nexthop); | |
96 | /* adjust iovec */ | |
97 | iov[iovcnt].iov_base = &nexthop; | |
98 | iov[iovcnt++].iov_len = sizeof(nexthop); | |
99 | ||
100 | /* If action is RTM_DELETE we have to get rid of MPLS infos */ | |
101 | if (action != RTM_DELETE) { | |
102 | memset(&sa_label_out, 0, sizeof(sa_label_out)); | |
103 | sa_label_out.smpls_len = sizeof(sa_label_out); | |
104 | sa_label_out.smpls_family = AF_MPLS; | |
105 | sa_label_out.smpls_label = | |
106 | htonl(nhlfe->nexthop->nh_label->label[0] | |
107 | << MPLS_LABEL_OFFSET); | |
108 | /* adjust header */ | |
109 | hdr.rtm_addrs |= RTA_SRC; | |
110 | hdr.rtm_flags |= RTF_MPLS; | |
111 | hdr.rtm_msglen += sizeof(sa_label_out); | |
112 | /* adjust iovec */ | |
113 | iov[iovcnt].iov_base = &sa_label_out; | |
114 | iov[iovcnt++].iov_len = sizeof(sa_label_out); | |
115 | ||
116 | if (nhlfe->nexthop->nh_label->label[0] == MPLS_LABEL_IMPLNULL) | |
117 | hdr.rtm_mpls = MPLS_OP_POP; | |
118 | else | |
119 | hdr.rtm_mpls = MPLS_OP_SWAP; | |
120 | } | |
121 | ||
0cf6db21 | 122 | frr_with_privs(&zserv_privs) { |
01b9e3fd DL |
123 | ret = writev(kr_state.fd, iov, iovcnt); |
124 | } | |
d62a17ae | 125 | |
126 | if (ret == -1) | |
450971aa | 127 | flog_err_sys(EC_LIB_SOCKET, "%s: %s", __func__, |
09c866e3 | 128 | safe_strerror(errno)); |
d62a17ae | 129 | |
130 | return ret; | |
e07486ce RW |
131 | } |
132 | ||
133 | #if !defined(ROUNDUP) | |
d62a17ae | 134 | #define ROUNDUP(a) \ |
135 | (((a) & (sizeof(long) - 1)) ? (1 + ((a) | (sizeof(long) - 1))) : (a)) | |
e07486ce RW |
136 | #endif |
137 | ||
d62a17ae | 138 | static int kernel_send_rtmsg_v6(int action, mpls_label_t in_label, |
81793ac1 | 139 | const zebra_nhlfe_t *nhlfe) |
e07486ce | 140 | { |
d62a17ae | 141 | struct iovec iov[5]; |
142 | struct rt_msghdr hdr; | |
143 | struct sockaddr_mpls sa_label_in, sa_label_out; | |
144 | struct pad { | |
145 | struct sockaddr_in6 addr; | |
146 | char pad[sizeof(long)]; /* thank you IPv6 */ | |
147 | } nexthop; | |
148 | int iovcnt = 0; | |
149 | int ret; | |
150 | ||
151 | if (IS_ZEBRA_DEBUG_KERNEL) | |
152 | zlog_debug("%s: 0x%x, label=%u", __func__, action, in_label); | |
153 | ||
154 | /* initialize header */ | |
155 | memset(&hdr, 0, sizeof(hdr)); | |
156 | hdr.rtm_version = RTM_VERSION; | |
157 | ||
158 | hdr.rtm_type = action; | |
159 | hdr.rtm_flags = RTF_UP; | |
160 | hdr.rtm_fmask = RTF_MPLS; | |
161 | hdr.rtm_seq = kr_state.rtseq++; /* overflow doesn't matter */ | |
162 | hdr.rtm_msglen = sizeof(hdr); | |
163 | hdr.rtm_hdrlen = sizeof(struct rt_msghdr); | |
164 | hdr.rtm_priority = 0; | |
165 | /* adjust iovec */ | |
166 | iov[iovcnt].iov_base = &hdr; | |
167 | iov[iovcnt++].iov_len = sizeof(hdr); | |
168 | ||
169 | /* in label */ | |
170 | memset(&sa_label_in, 0, sizeof(sa_label_in)); | |
171 | sa_label_in.smpls_len = sizeof(sa_label_in); | |
172 | sa_label_in.smpls_family = AF_MPLS; | |
173 | sa_label_in.smpls_label = htonl(in_label << MPLS_LABEL_OFFSET); | |
174 | /* adjust header */ | |
175 | hdr.rtm_flags |= RTF_MPLS | RTF_MPATH; | |
176 | hdr.rtm_addrs |= RTA_DST; | |
177 | hdr.rtm_msglen += sizeof(sa_label_in); | |
178 | /* adjust iovec */ | |
179 | iov[iovcnt].iov_base = &sa_label_in; | |
180 | iov[iovcnt++].iov_len = sizeof(sa_label_in); | |
181 | ||
182 | /* nexthop */ | |
183 | memset(&nexthop, 0, sizeof(nexthop)); | |
184 | nexthop.addr.sin6_len = sizeof(struct sockaddr_in6); | |
185 | nexthop.addr.sin6_family = AF_INET6; | |
186 | nexthop.addr.sin6_addr = nhlfe->nexthop->gate.ipv6; | |
187 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop.addr.sin6_addr)) { | |
188 | uint16_t tmp16; | |
189 | struct sockaddr_in6 *sin6 = &nexthop.addr; | |
190 | ||
191 | nexthop.addr.sin6_scope_id = nhlfe->nexthop->ifindex; | |
192 | ||
193 | memcpy(&tmp16, &sin6->sin6_addr.s6_addr[2], sizeof(tmp16)); | |
194 | tmp16 = htons(sin6->sin6_scope_id); | |
195 | memcpy(&sin6->sin6_addr.s6_addr[2], &tmp16, sizeof(tmp16)); | |
196 | sin6->sin6_scope_id = 0; | |
197 | } | |
198 | ||
199 | /* adjust header */ | |
200 | hdr.rtm_flags |= RTF_GATEWAY; | |
201 | hdr.rtm_addrs |= RTA_GATEWAY; | |
202 | hdr.rtm_msglen += ROUNDUP(sizeof(struct sockaddr_in6)); | |
203 | /* adjust iovec */ | |
204 | iov[iovcnt].iov_base = &nexthop; | |
205 | iov[iovcnt++].iov_len = ROUNDUP(sizeof(struct sockaddr_in6)); | |
206 | ||
207 | /* If action is RTM_DELETE we have to get rid of MPLS infos */ | |
208 | if (action != RTM_DELETE) { | |
209 | memset(&sa_label_out, 0, sizeof(sa_label_out)); | |
210 | sa_label_out.smpls_len = sizeof(sa_label_out); | |
211 | sa_label_out.smpls_family = AF_MPLS; | |
212 | sa_label_out.smpls_label = | |
213 | htonl(nhlfe->nexthop->nh_label->label[0] | |
214 | << MPLS_LABEL_OFFSET); | |
215 | /* adjust header */ | |
216 | hdr.rtm_addrs |= RTA_SRC; | |
217 | hdr.rtm_flags |= RTF_MPLS; | |
218 | hdr.rtm_msglen += sizeof(sa_label_out); | |
219 | /* adjust iovec */ | |
220 | iov[iovcnt].iov_base = &sa_label_out; | |
221 | iov[iovcnt++].iov_len = sizeof(sa_label_out); | |
222 | ||
223 | if (nhlfe->nexthop->nh_label->label[0] == MPLS_LABEL_IMPLNULL) | |
224 | hdr.rtm_mpls = MPLS_OP_POP; | |
225 | else | |
226 | hdr.rtm_mpls = MPLS_OP_SWAP; | |
227 | } | |
228 | ||
0cf6db21 | 229 | frr_with_privs(&zserv_privs) { |
01b9e3fd DL |
230 | ret = writev(kr_state.fd, iov, iovcnt); |
231 | } | |
d62a17ae | 232 | |
233 | if (ret == -1) | |
450971aa | 234 | flog_err_sys(EC_LIB_SOCKET, "%s: %s", __func__, |
09c866e3 | 235 | safe_strerror(errno)); |
d62a17ae | 236 | |
237 | return ret; | |
d3e2c74a RW |
238 | } |
239 | ||
fc608372 | 240 | static int kernel_lsp_cmd(struct zebra_dplane_ctx *ctx) |
d3e2c74a | 241 | { |
ee70f629 | 242 | const struct nhlfe_list_head *head; |
81793ac1 | 243 | const zebra_nhlfe_t *nhlfe; |
ee70f629 | 244 | const struct nexthop *nexthop = NULL; |
d62a17ae | 245 | unsigned int nexthop_num = 0; |
fc608372 MS |
246 | int action; |
247 | ||
248 | switch (dplane_ctx_get_op(ctx)) { | |
249 | case DPLANE_OP_LSP_DELETE: | |
250 | action = RTM_DELETE; | |
251 | break; | |
252 | case DPLANE_OP_LSP_INSTALL: | |
253 | action = RTM_ADD; | |
254 | break; | |
255 | case DPLANE_OP_LSP_UPDATE: | |
256 | action = RTM_CHANGE; | |
257 | break; | |
258 | default: | |
259 | return -1; | |
260 | } | |
d62a17ae | 261 | |
ee70f629 MS |
262 | head = dplane_ctx_get_nhlfe_list(ctx); |
263 | frr_each(nhlfe_list_const, head, nhlfe) { | |
d62a17ae | 264 | nexthop = nhlfe->nexthop; |
265 | if (!nexthop) | |
266 | continue; | |
267 | ||
b3f2b590 | 268 | if (nexthop_num >= zrouter.multipath_num) |
d62a17ae | 269 | break; |
270 | ||
271 | if (((action == RTM_ADD || action == RTM_CHANGE) | |
272 | && (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED) | |
273 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))) | |
274 | || (action == RTM_DELETE | |
275 | && (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) | |
276 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)))) { | |
5e8c8947 | 277 | if (nhlfe->nexthop->nh_label->num_labels > 1) { |
e914ccbe | 278 | flog_warn(EC_ZEBRA_MAX_LABELS_PUSH, |
3efd0893 | 279 | "%s: can't push %u labels at once (maximum is 1)", |
9df414fe QY |
280 | __func__, |
281 | nhlfe->nexthop->nh_label->num_labels); | |
5e8c8947 RW |
282 | continue; |
283 | } | |
284 | ||
d62a17ae | 285 | nexthop_num++; |
286 | ||
287 | switch (NHLFE_FAMILY(nhlfe)) { | |
288 | case AF_INET: | |
fc608372 MS |
289 | kernel_send_rtmsg_v4( |
290 | action, | |
291 | dplane_ctx_get_in_label(ctx), | |
292 | nhlfe); | |
d62a17ae | 293 | break; |
294 | case AF_INET6: | |
fc608372 MS |
295 | kernel_send_rtmsg_v6( |
296 | action, | |
297 | dplane_ctx_get_in_label(ctx), | |
298 | nhlfe); | |
d62a17ae | 299 | break; |
300 | default: | |
301 | break; | |
302 | } | |
d62a17ae | 303 | } |
304 | } | |
305 | ||
95f7965d | 306 | return 0; |
d3e2c74a RW |
307 | } |
308 | ||
fc608372 | 309 | enum zebra_dplane_result kernel_lsp_update(struct zebra_dplane_ctx *ctx) |
d3e2c74a | 310 | { |
d62a17ae | 311 | int ret; |
c4c8dec0 | 312 | |
fc608372 | 313 | ret = kernel_lsp_cmd(ctx); |
c4c8dec0 | 314 | |
fc608372 MS |
315 | return (ret == 0 ? |
316 | ZEBRA_DPLANE_REQUEST_SUCCESS : ZEBRA_DPLANE_REQUEST_FAILURE); | |
16c628de MS |
317 | } |
318 | ||
97d8d05a | 319 | static enum zebra_dplane_result kmpw_install(struct zebra_dplane_ctx *ctx) |
d42127da RW |
320 | { |
321 | struct ifreq ifr; | |
322 | struct ifmpwreq imr; | |
323 | struct sockaddr_storage ss; | |
324 | struct sockaddr_in *sa_in = (struct sockaddr_in *)&ss; | |
325 | struct sockaddr_in6 *sa_in6 = (struct sockaddr_in6 *)&ss; | |
97d8d05a | 326 | const union g_addr *gaddr; |
d42127da RW |
327 | |
328 | memset(&imr, 0, sizeof(imr)); | |
97d8d05a | 329 | switch (dplane_ctx_get_pw_type(ctx)) { |
d42127da RW |
330 | case PW_TYPE_ETHERNET: |
331 | imr.imr_type = IMR_TYPE_ETHERNET; | |
332 | break; | |
333 | case PW_TYPE_ETHERNET_TAGGED: | |
334 | imr.imr_type = IMR_TYPE_ETHERNET_TAGGED; | |
335 | break; | |
336 | default: | |
9df414fe | 337 | zlog_debug("%s: unhandled pseudowire type (%#X)", __func__, |
97d8d05a MS |
338 | dplane_ctx_get_pw_type(ctx)); |
339 | return ZEBRA_DPLANE_REQUEST_FAILURE; | |
d42127da RW |
340 | } |
341 | ||
97d8d05a | 342 | if (dplane_ctx_get_pw_flags(ctx) & F_PSEUDOWIRE_CWORD) |
d42127da RW |
343 | imr.imr_flags |= IMR_FLAG_CONTROLWORD; |
344 | ||
345 | /* pseudowire nexthop */ | |
346 | memset(&ss, 0, sizeof(ss)); | |
16d69787 | 347 | gaddr = dplane_ctx_get_pw_dest(ctx); |
97d8d05a | 348 | switch (dplane_ctx_get_pw_af(ctx)) { |
d42127da RW |
349 | case AF_INET: |
350 | sa_in->sin_family = AF_INET; | |
351 | sa_in->sin_len = sizeof(struct sockaddr_in); | |
97d8d05a | 352 | sa_in->sin_addr = gaddr->ipv4; |
d42127da RW |
353 | break; |
354 | case AF_INET6: | |
355 | sa_in6->sin6_family = AF_INET6; | |
356 | sa_in6->sin6_len = sizeof(struct sockaddr_in6); | |
97d8d05a | 357 | sa_in6->sin6_addr = gaddr->ipv6; |
d42127da RW |
358 | break; |
359 | default: | |
9df414fe | 360 | zlog_debug("%s: unhandled pseudowire address-family (%u)", |
97d8d05a MS |
361 | __func__, dplane_ctx_get_pw_af(ctx)); |
362 | return ZEBRA_DPLANE_REQUEST_FAILURE; | |
d42127da RW |
363 | } |
364 | memcpy(&imr.imr_nexthop, (struct sockaddr *)&ss, | |
365 | sizeof(imr.imr_nexthop)); | |
366 | ||
367 | /* pseudowire local/remote labels */ | |
97d8d05a MS |
368 | imr.imr_lshim.shim_label = dplane_ctx_get_pw_local_label(ctx); |
369 | imr.imr_rshim.shim_label = dplane_ctx_get_pw_remote_label(ctx); | |
d42127da RW |
370 | |
371 | /* ioctl */ | |
372 | memset(&ifr, 0, sizeof(ifr)); | |
7c7ef4a8 | 373 | strlcpy(ifr.ifr_name, dplane_ctx_get_ifname(ctx), |
97d8d05a | 374 | sizeof(ifr.ifr_name)); |
d42127da RW |
375 | ifr.ifr_data = (caddr_t)&imr; |
376 | if (ioctl(kr_state.ioctl_fd, SIOCSETMPWCFG, &ifr) == -1) { | |
450971aa | 377 | flog_err_sys(EC_LIB_SYSTEM_CALL, "ioctl SIOCSETMPWCFG: %s", |
09c866e3 | 378 | safe_strerror(errno)); |
97d8d05a | 379 | return ZEBRA_DPLANE_REQUEST_FAILURE; |
d42127da RW |
380 | } |
381 | ||
97d8d05a | 382 | return ZEBRA_DPLANE_REQUEST_SUCCESS; |
d42127da RW |
383 | } |
384 | ||
97d8d05a | 385 | static enum zebra_dplane_result kmpw_uninstall(struct zebra_dplane_ctx *ctx) |
d42127da RW |
386 | { |
387 | struct ifreq ifr; | |
388 | struct ifmpwreq imr; | |
389 | ||
390 | memset(&ifr, 0, sizeof(ifr)); | |
391 | memset(&imr, 0, sizeof(imr)); | |
7c7ef4a8 | 392 | strlcpy(ifr.ifr_name, dplane_ctx_get_ifname(ctx), |
97d8d05a | 393 | sizeof(ifr.ifr_name)); |
d42127da RW |
394 | ifr.ifr_data = (caddr_t)&imr; |
395 | if (ioctl(kr_state.ioctl_fd, SIOCSETMPWCFG, &ifr) == -1) { | |
450971aa | 396 | flog_err_sys(EC_LIB_SYSTEM_CALL, "ioctl SIOCSETMPWCFG: %s", |
09c866e3 | 397 | safe_strerror(errno)); |
97d8d05a | 398 | return ZEBRA_DPLANE_REQUEST_FAILURE; |
d42127da RW |
399 | } |
400 | ||
97d8d05a MS |
401 | return ZEBRA_DPLANE_REQUEST_SUCCESS; |
402 | } | |
403 | ||
404 | /* | |
405 | * Pseudowire update api for openbsd. | |
406 | */ | |
407 | enum zebra_dplane_result kernel_pw_update(struct zebra_dplane_ctx *ctx) | |
408 | { | |
409 | enum zebra_dplane_result result = ZEBRA_DPLANE_REQUEST_FAILURE; | |
410 | ||
411 | switch (dplane_ctx_get_op(ctx)) { | |
412 | case DPLANE_OP_PW_INSTALL: | |
413 | result = kmpw_install(ctx); | |
414 | break; | |
415 | case DPLANE_OP_PW_UNINSTALL: | |
416 | result = kmpw_uninstall(ctx); | |
417 | break; | |
418 | default: | |
419 | break; | |
5b94ec50 | 420 | } |
97d8d05a MS |
421 | |
422 | return result; | |
d42127da RW |
423 | } |
424 | ||
d3e2c74a | 425 | #define MAX_RTSOCK_BUF 128 * 1024 |
d62a17ae | 426 | int mpls_kernel_init(void) |
d3e2c74a | 427 | { |
d62a17ae | 428 | int rcvbuf, default_rcvbuf; |
429 | socklen_t optlen; | |
430 | ||
431 | if ((kr_state.fd = socket(AF_ROUTE, SOCK_RAW, 0)) == -1) { | |
450971aa | 432 | flog_err_sys(EC_LIB_SOCKET, "%s: socket", __func__); |
d62a17ae | 433 | return -1; |
434 | } | |
435 | ||
d42127da RW |
436 | if ((kr_state.ioctl_fd = socket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0)) |
437 | == -1) { | |
450971aa | 438 | flog_err_sys(EC_LIB_SOCKET, "%s: ioctl socket", __func__); |
d42127da RW |
439 | return -1; |
440 | } | |
441 | ||
d62a17ae | 442 | /* grow receive buffer, don't wanna miss messages */ |
443 | optlen = sizeof(default_rcvbuf); | |
444 | if (getsockopt(kr_state.fd, SOL_SOCKET, SO_RCVBUF, &default_rcvbuf, | |
445 | &optlen) | |
446 | == -1) | |
450971aa | 447 | flog_err_sys(EC_LIB_SOCKET, |
9df414fe | 448 | "kr_init getsockopt SOL_SOCKET SO_RCVBUF"); |
d62a17ae | 449 | else |
450 | for (rcvbuf = MAX_RTSOCK_BUF; | |
451 | rcvbuf > default_rcvbuf | |
452 | && setsockopt(kr_state.fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, | |
453 | sizeof(rcvbuf)) | |
454 | == -1 | |
455 | && errno == ENOBUFS; | |
456 | rcvbuf /= 2) | |
457 | ; /* nothing */ | |
458 | ||
459 | kr_state.rtseq = 1; | |
460 | ||
461 | return 0; | |
d3e2c74a | 462 | } |
ddfeb486 DL |
463 | |
464 | #endif /* OPEN_BSD */ |