Merge tag 'pull-la-20220814' of https://gitlab.com/rth7680/qemu into staging
[qemu.git] / linux-user / fd-trans.c
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, see <http://www.gnu.org/licenses/>.
14 */
15
16 #include "qemu/osdep.h"
17
18 #include <sys/signalfd.h>
19 #include <linux/unistd.h>
20 #include <linux/audit.h>
21 #ifdef CONFIG_INOTIFY
22 #include <sys/inotify.h>
23 #endif
24 #include <linux/netlink.h>
25 #ifdef CONFIG_RTNETLINK
26 #include <linux/rtnetlink.h>
27 #include <linux/if_bridge.h>
28 #endif
29 #include "qemu.h"
30 #include "fd-trans.h"
31
32 enum {
33 QEMU_IFLA_BR_UNSPEC,
34 QEMU_IFLA_BR_FORWARD_DELAY,
35 QEMU_IFLA_BR_HELLO_TIME,
36 QEMU_IFLA_BR_MAX_AGE,
37 QEMU_IFLA_BR_AGEING_TIME,
38 QEMU_IFLA_BR_STP_STATE,
39 QEMU_IFLA_BR_PRIORITY,
40 QEMU_IFLA_BR_VLAN_FILTERING,
41 QEMU_IFLA_BR_VLAN_PROTOCOL,
42 QEMU_IFLA_BR_GROUP_FWD_MASK,
43 QEMU_IFLA_BR_ROOT_ID,
44 QEMU_IFLA_BR_BRIDGE_ID,
45 QEMU_IFLA_BR_ROOT_PORT,
46 QEMU_IFLA_BR_ROOT_PATH_COST,
47 QEMU_IFLA_BR_TOPOLOGY_CHANGE,
48 QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
49 QEMU_IFLA_BR_HELLO_TIMER,
50 QEMU_IFLA_BR_TCN_TIMER,
51 QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER,
52 QEMU_IFLA_BR_GC_TIMER,
53 QEMU_IFLA_BR_GROUP_ADDR,
54 QEMU_IFLA_BR_FDB_FLUSH,
55 QEMU_IFLA_BR_MCAST_ROUTER,
56 QEMU_IFLA_BR_MCAST_SNOOPING,
57 QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR,
58 QEMU_IFLA_BR_MCAST_QUERIER,
59 QEMU_IFLA_BR_MCAST_HASH_ELASTICITY,
60 QEMU_IFLA_BR_MCAST_HASH_MAX,
61 QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT,
62 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT,
63 QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL,
64 QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL,
65 QEMU_IFLA_BR_MCAST_QUERIER_INTVL,
66 QEMU_IFLA_BR_MCAST_QUERY_INTVL,
67 QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL,
68 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL,
69 QEMU_IFLA_BR_NF_CALL_IPTABLES,
70 QEMU_IFLA_BR_NF_CALL_IP6TABLES,
71 QEMU_IFLA_BR_NF_CALL_ARPTABLES,
72 QEMU_IFLA_BR_VLAN_DEFAULT_PVID,
73 QEMU_IFLA_BR_PAD,
74 QEMU_IFLA_BR_VLAN_STATS_ENABLED,
75 QEMU_IFLA_BR_MCAST_STATS_ENABLED,
76 QEMU_IFLA_BR_MCAST_IGMP_VERSION,
77 QEMU_IFLA_BR_MCAST_MLD_VERSION,
78 QEMU_IFLA_BR_VLAN_STATS_PER_PORT,
79 QEMU_IFLA_BR_MULTI_BOOLOPT,
80 QEMU___IFLA_BR_MAX,
81 };
82
83 enum {
84 QEMU_IFLA_UNSPEC,
85 QEMU_IFLA_ADDRESS,
86 QEMU_IFLA_BROADCAST,
87 QEMU_IFLA_IFNAME,
88 QEMU_IFLA_MTU,
89 QEMU_IFLA_LINK,
90 QEMU_IFLA_QDISC,
91 QEMU_IFLA_STATS,
92 QEMU_IFLA_COST,
93 QEMU_IFLA_PRIORITY,
94 QEMU_IFLA_MASTER,
95 QEMU_IFLA_WIRELESS,
96 QEMU_IFLA_PROTINFO,
97 QEMU_IFLA_TXQLEN,
98 QEMU_IFLA_MAP,
99 QEMU_IFLA_WEIGHT,
100 QEMU_IFLA_OPERSTATE,
101 QEMU_IFLA_LINKMODE,
102 QEMU_IFLA_LINKINFO,
103 QEMU_IFLA_NET_NS_PID,
104 QEMU_IFLA_IFALIAS,
105 QEMU_IFLA_NUM_VF,
106 QEMU_IFLA_VFINFO_LIST,
107 QEMU_IFLA_STATS64,
108 QEMU_IFLA_VF_PORTS,
109 QEMU_IFLA_PORT_SELF,
110 QEMU_IFLA_AF_SPEC,
111 QEMU_IFLA_GROUP,
112 QEMU_IFLA_NET_NS_FD,
113 QEMU_IFLA_EXT_MASK,
114 QEMU_IFLA_PROMISCUITY,
115 QEMU_IFLA_NUM_TX_QUEUES,
116 QEMU_IFLA_NUM_RX_QUEUES,
117 QEMU_IFLA_CARRIER,
118 QEMU_IFLA_PHYS_PORT_ID,
119 QEMU_IFLA_CARRIER_CHANGES,
120 QEMU_IFLA_PHYS_SWITCH_ID,
121 QEMU_IFLA_LINK_NETNSID,
122 QEMU_IFLA_PHYS_PORT_NAME,
123 QEMU_IFLA_PROTO_DOWN,
124 QEMU_IFLA_GSO_MAX_SEGS,
125 QEMU_IFLA_GSO_MAX_SIZE,
126 QEMU_IFLA_PAD,
127 QEMU_IFLA_XDP,
128 QEMU_IFLA_EVENT,
129 QEMU_IFLA_NEW_NETNSID,
130 QEMU_IFLA_IF_NETNSID,
131 QEMU_IFLA_CARRIER_UP_COUNT,
132 QEMU_IFLA_CARRIER_DOWN_COUNT,
133 QEMU_IFLA_NEW_IFINDEX,
134 QEMU_IFLA_MIN_MTU,
135 QEMU_IFLA_MAX_MTU,
136 QEMU___IFLA_MAX
137 };
138
139 enum {
140 QEMU_IFLA_BRPORT_UNSPEC,
141 QEMU_IFLA_BRPORT_STATE,
142 QEMU_IFLA_BRPORT_PRIORITY,
143 QEMU_IFLA_BRPORT_COST,
144 QEMU_IFLA_BRPORT_MODE,
145 QEMU_IFLA_BRPORT_GUARD,
146 QEMU_IFLA_BRPORT_PROTECT,
147 QEMU_IFLA_BRPORT_FAST_LEAVE,
148 QEMU_IFLA_BRPORT_LEARNING,
149 QEMU_IFLA_BRPORT_UNICAST_FLOOD,
150 QEMU_IFLA_BRPORT_PROXYARP,
151 QEMU_IFLA_BRPORT_LEARNING_SYNC,
152 QEMU_IFLA_BRPORT_PROXYARP_WIFI,
153 QEMU_IFLA_BRPORT_ROOT_ID,
154 QEMU_IFLA_BRPORT_BRIDGE_ID,
155 QEMU_IFLA_BRPORT_DESIGNATED_PORT,
156 QEMU_IFLA_BRPORT_DESIGNATED_COST,
157 QEMU_IFLA_BRPORT_ID,
158 QEMU_IFLA_BRPORT_NO,
159 QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
160 QEMU_IFLA_BRPORT_CONFIG_PENDING,
161 QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER,
162 QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER,
163 QEMU_IFLA_BRPORT_HOLD_TIMER,
164 QEMU_IFLA_BRPORT_FLUSH,
165 QEMU_IFLA_BRPORT_MULTICAST_ROUTER,
166 QEMU_IFLA_BRPORT_PAD,
167 QEMU_IFLA_BRPORT_MCAST_FLOOD,
168 QEMU_IFLA_BRPORT_MCAST_TO_UCAST,
169 QEMU_IFLA_BRPORT_VLAN_TUNNEL,
170 QEMU_IFLA_BRPORT_BCAST_FLOOD,
171 QEMU_IFLA_BRPORT_GROUP_FWD_MASK,
172 QEMU_IFLA_BRPORT_NEIGH_SUPPRESS,
173 QEMU_IFLA_BRPORT_ISOLATED,
174 QEMU_IFLA_BRPORT_BACKUP_PORT,
175 QEMU___IFLA_BRPORT_MAX
176 };
177
178 enum {
179 QEMU_IFLA_TUN_UNSPEC,
180 QEMU_IFLA_TUN_OWNER,
181 QEMU_IFLA_TUN_GROUP,
182 QEMU_IFLA_TUN_TYPE,
183 QEMU_IFLA_TUN_PI,
184 QEMU_IFLA_TUN_VNET_HDR,
185 QEMU_IFLA_TUN_PERSIST,
186 QEMU_IFLA_TUN_MULTI_QUEUE,
187 QEMU_IFLA_TUN_NUM_QUEUES,
188 QEMU_IFLA_TUN_NUM_DISABLED_QUEUES,
189 QEMU___IFLA_TUN_MAX,
190 };
191
192 enum {
193 QEMU_IFLA_INFO_UNSPEC,
194 QEMU_IFLA_INFO_KIND,
195 QEMU_IFLA_INFO_DATA,
196 QEMU_IFLA_INFO_XSTATS,
197 QEMU_IFLA_INFO_SLAVE_KIND,
198 QEMU_IFLA_INFO_SLAVE_DATA,
199 QEMU___IFLA_INFO_MAX,
200 };
201
202 enum {
203 QEMU_IFLA_INET_UNSPEC,
204 QEMU_IFLA_INET_CONF,
205 QEMU___IFLA_INET_MAX,
206 };
207
208 enum {
209 QEMU_IFLA_INET6_UNSPEC,
210 QEMU_IFLA_INET6_FLAGS,
211 QEMU_IFLA_INET6_CONF,
212 QEMU_IFLA_INET6_STATS,
213 QEMU_IFLA_INET6_MCAST,
214 QEMU_IFLA_INET6_CACHEINFO,
215 QEMU_IFLA_INET6_ICMP6STATS,
216 QEMU_IFLA_INET6_TOKEN,
217 QEMU_IFLA_INET6_ADDR_GEN_MODE,
218 QEMU___IFLA_INET6_MAX
219 };
220
221 enum {
222 QEMU_IFLA_XDP_UNSPEC,
223 QEMU_IFLA_XDP_FD,
224 QEMU_IFLA_XDP_ATTACHED,
225 QEMU_IFLA_XDP_FLAGS,
226 QEMU_IFLA_XDP_PROG_ID,
227 QEMU___IFLA_XDP_MAX,
228 };
229
230 enum {
231 QEMU_RTA_UNSPEC,
232 QEMU_RTA_DST,
233 QEMU_RTA_SRC,
234 QEMU_RTA_IIF,
235 QEMU_RTA_OIF,
236 QEMU_RTA_GATEWAY,
237 QEMU_RTA_PRIORITY,
238 QEMU_RTA_PREFSRC,
239 QEMU_RTA_METRICS,
240 QEMU_RTA_MULTIPATH,
241 QEMU_RTA_PROTOINFO, /* no longer used */
242 QEMU_RTA_FLOW,
243 QEMU_RTA_CACHEINFO,
244 QEMU_RTA_SESSION, /* no longer used */
245 QEMU_RTA_MP_ALGO, /* no longer used */
246 QEMU_RTA_TABLE,
247 QEMU_RTA_MARK,
248 QEMU_RTA_MFC_STATS,
249 QEMU_RTA_VIA,
250 QEMU_RTA_NEWDST,
251 QEMU_RTA_PREF,
252 QEMU_RTA_ENCAP_TYPE,
253 QEMU_RTA_ENCAP,
254 QEMU_RTA_EXPIRES,
255 QEMU_RTA_PAD,
256 QEMU_RTA_UID,
257 QEMU_RTA_TTL_PROPAGATE,
258 QEMU_RTA_IP_PROTO,
259 QEMU_RTA_SPORT,
260 QEMU_RTA_DPORT,
261 QEMU___RTA_MAX
262 };
263
264 TargetFdTrans **target_fd_trans;
265 unsigned int target_fd_max;
266
267 static void tswap_nlmsghdr(struct nlmsghdr *nlh)
268 {
269 nlh->nlmsg_len = tswap32(nlh->nlmsg_len);
270 nlh->nlmsg_type = tswap16(nlh->nlmsg_type);
271 nlh->nlmsg_flags = tswap16(nlh->nlmsg_flags);
272 nlh->nlmsg_seq = tswap32(nlh->nlmsg_seq);
273 nlh->nlmsg_pid = tswap32(nlh->nlmsg_pid);
274 }
275
276 static abi_long host_to_target_for_each_nlmsg(struct nlmsghdr *nlh,
277 size_t len,
278 abi_long (*host_to_target_nlmsg)
279 (struct nlmsghdr *))
280 {
281 uint32_t nlmsg_len;
282 uint32_t aligned_nlmsg_len;
283 abi_long ret;
284
285 while (len > sizeof(struct nlmsghdr)) {
286
287 nlmsg_len = nlh->nlmsg_len;
288 if (nlmsg_len < sizeof(struct nlmsghdr) ||
289 nlmsg_len > len) {
290 break;
291 }
292
293 switch (nlh->nlmsg_type) {
294 case NLMSG_DONE:
295 tswap_nlmsghdr(nlh);
296 return 0;
297 case NLMSG_NOOP:
298 break;
299 case NLMSG_ERROR:
300 {
301 struct nlmsgerr *e = NLMSG_DATA(nlh);
302 e->error = tswap32(e->error);
303 tswap_nlmsghdr(&e->msg);
304 tswap_nlmsghdr(nlh);
305 return 0;
306 }
307 default:
308 ret = host_to_target_nlmsg(nlh);
309 if (ret < 0) {
310 tswap_nlmsghdr(nlh);
311 return ret;
312 }
313 break;
314 }
315 tswap_nlmsghdr(nlh);
316
317 aligned_nlmsg_len = NLMSG_ALIGN(nlmsg_len);
318 if (aligned_nlmsg_len >= len) {
319 break;
320 }
321 len -= aligned_nlmsg_len;
322 nlh = (struct nlmsghdr *)(((char*)nlh) + aligned_nlmsg_len);
323 }
324 return 0;
325 }
326
327 static abi_long target_to_host_for_each_nlmsg(struct nlmsghdr *nlh,
328 size_t len,
329 abi_long (*target_to_host_nlmsg)
330 (struct nlmsghdr *))
331 {
332 uint32_t aligned_nlmsg_len;
333 int ret;
334
335 while (len > sizeof(struct nlmsghdr)) {
336 if (tswap32(nlh->nlmsg_len) < sizeof(struct nlmsghdr) ||
337 tswap32(nlh->nlmsg_len) > len) {
338 break;
339 }
340 tswap_nlmsghdr(nlh);
341 switch (nlh->nlmsg_type) {
342 case NLMSG_DONE:
343 return 0;
344 case NLMSG_NOOP:
345 break;
346 case NLMSG_ERROR:
347 {
348 struct nlmsgerr *e = NLMSG_DATA(nlh);
349 e->error = tswap32(e->error);
350 tswap_nlmsghdr(&e->msg);
351 return 0;
352 }
353 default:
354 ret = target_to_host_nlmsg(nlh);
355 if (ret < 0) {
356 return ret;
357 }
358 }
359
360 aligned_nlmsg_len = NLMSG_ALIGN(nlh->nlmsg_len);
361 if (aligned_nlmsg_len >= len) {
362 break;
363 }
364 len -= aligned_nlmsg_len;
365 nlh = (struct nlmsghdr *)(((char *)nlh) + aligned_nlmsg_len);
366 }
367 return 0;
368 }
369
370 #ifdef CONFIG_RTNETLINK
371 static abi_long host_to_target_for_each_nlattr(struct nlattr *nlattr,
372 size_t len, void *context,
373 abi_long (*host_to_target_nlattr)
374 (struct nlattr *,
375 void *context))
376 {
377 unsigned short nla_len;
378 unsigned short aligned_nla_len;
379 abi_long ret;
380
381 while (len > sizeof(struct nlattr)) {
382 nla_len = nlattr->nla_len;
383 if (nla_len < sizeof(struct nlattr) ||
384 nla_len > len) {
385 break;
386 }
387 ret = host_to_target_nlattr(nlattr, context);
388 nlattr->nla_len = tswap16(nlattr->nla_len);
389 nlattr->nla_type = tswap16(nlattr->nla_type);
390 if (ret < 0) {
391 return ret;
392 }
393
394 aligned_nla_len = NLA_ALIGN(nla_len);
395 if (aligned_nla_len >= len) {
396 break;
397 }
398 len -= aligned_nla_len;
399 nlattr = (struct nlattr *)(((char *)nlattr) + aligned_nla_len);
400 }
401 return 0;
402 }
403
404 static abi_long host_to_target_for_each_rtattr(struct rtattr *rtattr,
405 size_t len,
406 abi_long (*host_to_target_rtattr)
407 (struct rtattr *))
408 {
409 unsigned short rta_len;
410 unsigned short aligned_rta_len;
411 abi_long ret;
412
413 while (len > sizeof(struct rtattr)) {
414 rta_len = rtattr->rta_len;
415 if (rta_len < sizeof(struct rtattr) ||
416 rta_len > len) {
417 break;
418 }
419 ret = host_to_target_rtattr(rtattr);
420 rtattr->rta_len = tswap16(rtattr->rta_len);
421 rtattr->rta_type = tswap16(rtattr->rta_type);
422 if (ret < 0) {
423 return ret;
424 }
425
426 aligned_rta_len = RTA_ALIGN(rta_len);
427 if (aligned_rta_len >= len) {
428 break;
429 }
430 len -= aligned_rta_len;
431 rtattr = (struct rtattr *)(((char *)rtattr) + aligned_rta_len);
432 }
433 return 0;
434 }
435
436 #define NLA_DATA(nla) ((void *)((char *)(nla)) + NLA_HDRLEN)
437
438 static abi_long host_to_target_data_bridge_nlattr(struct nlattr *nlattr,
439 void *context)
440 {
441 uint16_t *u16;
442 uint32_t *u32;
443 uint64_t *u64;
444
445 switch (nlattr->nla_type) {
446 /* no data */
447 case QEMU_IFLA_BR_FDB_FLUSH:
448 break;
449 /* binary */
450 case QEMU_IFLA_BR_GROUP_ADDR:
451 break;
452 /* uint8_t */
453 case QEMU_IFLA_BR_VLAN_FILTERING:
454 case QEMU_IFLA_BR_TOPOLOGY_CHANGE:
455 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED:
456 case QEMU_IFLA_BR_MCAST_ROUTER:
457 case QEMU_IFLA_BR_MCAST_SNOOPING:
458 case QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR:
459 case QEMU_IFLA_BR_MCAST_QUERIER:
460 case QEMU_IFLA_BR_NF_CALL_IPTABLES:
461 case QEMU_IFLA_BR_NF_CALL_IP6TABLES:
462 case QEMU_IFLA_BR_NF_CALL_ARPTABLES:
463 case QEMU_IFLA_BR_VLAN_STATS_ENABLED:
464 case QEMU_IFLA_BR_MCAST_STATS_ENABLED:
465 case QEMU_IFLA_BR_MCAST_IGMP_VERSION:
466 case QEMU_IFLA_BR_MCAST_MLD_VERSION:
467 case QEMU_IFLA_BR_VLAN_STATS_PER_PORT:
468 break;
469 /* uint16_t */
470 case QEMU_IFLA_BR_PRIORITY:
471 case QEMU_IFLA_BR_VLAN_PROTOCOL:
472 case QEMU_IFLA_BR_GROUP_FWD_MASK:
473 case QEMU_IFLA_BR_ROOT_PORT:
474 case QEMU_IFLA_BR_VLAN_DEFAULT_PVID:
475 u16 = NLA_DATA(nlattr);
476 *u16 = tswap16(*u16);
477 break;
478 /* uint32_t */
479 case QEMU_IFLA_BR_FORWARD_DELAY:
480 case QEMU_IFLA_BR_HELLO_TIME:
481 case QEMU_IFLA_BR_MAX_AGE:
482 case QEMU_IFLA_BR_AGEING_TIME:
483 case QEMU_IFLA_BR_STP_STATE:
484 case QEMU_IFLA_BR_ROOT_PATH_COST:
485 case QEMU_IFLA_BR_MCAST_HASH_ELASTICITY:
486 case QEMU_IFLA_BR_MCAST_HASH_MAX:
487 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT:
488 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT:
489 u32 = NLA_DATA(nlattr);
490 *u32 = tswap32(*u32);
491 break;
492 /* uint64_t */
493 case QEMU_IFLA_BR_HELLO_TIMER:
494 case QEMU_IFLA_BR_TCN_TIMER:
495 case QEMU_IFLA_BR_GC_TIMER:
496 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER:
497 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL:
498 case QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL:
499 case QEMU_IFLA_BR_MCAST_QUERIER_INTVL:
500 case QEMU_IFLA_BR_MCAST_QUERY_INTVL:
501 case QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL:
502 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL:
503 u64 = NLA_DATA(nlattr);
504 *u64 = tswap64(*u64);
505 break;
506 /* ifla_bridge_id: uin8_t[] */
507 case QEMU_IFLA_BR_ROOT_ID:
508 case QEMU_IFLA_BR_BRIDGE_ID:
509 break;
510 /* br_boolopt_multi { uint32_t, uint32_t } */
511 case QEMU_IFLA_BR_MULTI_BOOLOPT:
512 u32 = NLA_DATA(nlattr);
513 u32[0] = tswap32(u32[0]); /* optval */
514 u32[1] = tswap32(u32[1]); /* optmask */
515 break;
516 default:
517 gemu_log("Unknown QEMU_IFLA_BR type %d\n", nlattr->nla_type);
518 break;
519 }
520 return 0;
521 }
522
523 static abi_long host_to_target_slave_data_bridge_nlattr(struct nlattr *nlattr,
524 void *context)
525 {
526 uint16_t *u16;
527 uint32_t *u32;
528 uint64_t *u64;
529
530 switch (nlattr->nla_type) {
531 /* uint8_t */
532 case QEMU_IFLA_BRPORT_STATE:
533 case QEMU_IFLA_BRPORT_MODE:
534 case QEMU_IFLA_BRPORT_GUARD:
535 case QEMU_IFLA_BRPORT_PROTECT:
536 case QEMU_IFLA_BRPORT_FAST_LEAVE:
537 case QEMU_IFLA_BRPORT_LEARNING:
538 case QEMU_IFLA_BRPORT_UNICAST_FLOOD:
539 case QEMU_IFLA_BRPORT_PROXYARP:
540 case QEMU_IFLA_BRPORT_LEARNING_SYNC:
541 case QEMU_IFLA_BRPORT_PROXYARP_WIFI:
542 case QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK:
543 case QEMU_IFLA_BRPORT_CONFIG_PENDING:
544 case QEMU_IFLA_BRPORT_MULTICAST_ROUTER:
545 case QEMU_IFLA_BRPORT_MCAST_FLOOD:
546 case QEMU_IFLA_BRPORT_MCAST_TO_UCAST:
547 case QEMU_IFLA_BRPORT_VLAN_TUNNEL:
548 case QEMU_IFLA_BRPORT_BCAST_FLOOD:
549 case QEMU_IFLA_BRPORT_NEIGH_SUPPRESS:
550 case QEMU_IFLA_BRPORT_ISOLATED:
551 break;
552 /* uint16_t */
553 case QEMU_IFLA_BRPORT_PRIORITY:
554 case QEMU_IFLA_BRPORT_DESIGNATED_PORT:
555 case QEMU_IFLA_BRPORT_DESIGNATED_COST:
556 case QEMU_IFLA_BRPORT_ID:
557 case QEMU_IFLA_BRPORT_NO:
558 case QEMU_IFLA_BRPORT_GROUP_FWD_MASK:
559 u16 = NLA_DATA(nlattr);
560 *u16 = tswap16(*u16);
561 break;
562 /* uin32_t */
563 case QEMU_IFLA_BRPORT_COST:
564 case QEMU_IFLA_BRPORT_BACKUP_PORT:
565 u32 = NLA_DATA(nlattr);
566 *u32 = tswap32(*u32);
567 break;
568 /* uint64_t */
569 case QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER:
570 case QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER:
571 case QEMU_IFLA_BRPORT_HOLD_TIMER:
572 u64 = NLA_DATA(nlattr);
573 *u64 = tswap64(*u64);
574 break;
575 /* ifla_bridge_id: uint8_t[] */
576 case QEMU_IFLA_BRPORT_ROOT_ID:
577 case QEMU_IFLA_BRPORT_BRIDGE_ID:
578 break;
579 default:
580 gemu_log("Unknown QEMU_IFLA_BRPORT type %d\n", nlattr->nla_type);
581 break;
582 }
583 return 0;
584 }
585
586 static abi_long host_to_target_data_tun_nlattr(struct nlattr *nlattr,
587 void *context)
588 {
589 uint32_t *u32;
590
591 switch (nlattr->nla_type) {
592 /* uint8_t */
593 case QEMU_IFLA_TUN_TYPE:
594 case QEMU_IFLA_TUN_PI:
595 case QEMU_IFLA_TUN_VNET_HDR:
596 case QEMU_IFLA_TUN_PERSIST:
597 case QEMU_IFLA_TUN_MULTI_QUEUE:
598 break;
599 /* uint32_t */
600 case QEMU_IFLA_TUN_NUM_QUEUES:
601 case QEMU_IFLA_TUN_NUM_DISABLED_QUEUES:
602 case QEMU_IFLA_TUN_OWNER:
603 case QEMU_IFLA_TUN_GROUP:
604 u32 = NLA_DATA(nlattr);
605 *u32 = tswap32(*u32);
606 break;
607 default:
608 gemu_log("Unknown QEMU_IFLA_TUN type %d\n", nlattr->nla_type);
609 break;
610 }
611 return 0;
612 }
613
614 struct linkinfo_context {
615 int len;
616 char *name;
617 int slave_len;
618 char *slave_name;
619 };
620
621 static abi_long host_to_target_data_linkinfo_nlattr(struct nlattr *nlattr,
622 void *context)
623 {
624 struct linkinfo_context *li_context = context;
625
626 switch (nlattr->nla_type) {
627 /* string */
628 case QEMU_IFLA_INFO_KIND:
629 li_context->name = NLA_DATA(nlattr);
630 li_context->len = nlattr->nla_len - NLA_HDRLEN;
631 break;
632 case QEMU_IFLA_INFO_SLAVE_KIND:
633 li_context->slave_name = NLA_DATA(nlattr);
634 li_context->slave_len = nlattr->nla_len - NLA_HDRLEN;
635 break;
636 /* stats */
637 case QEMU_IFLA_INFO_XSTATS:
638 /* FIXME: only used by CAN */
639 break;
640 /* nested */
641 case QEMU_IFLA_INFO_DATA:
642 if (strncmp(li_context->name, "bridge",
643 li_context->len) == 0) {
644 return host_to_target_for_each_nlattr(NLA_DATA(nlattr),
645 nlattr->nla_len,
646 NULL,
647 host_to_target_data_bridge_nlattr);
648 } else if (strncmp(li_context->name, "tun",
649 li_context->len) == 0) {
650 return host_to_target_for_each_nlattr(NLA_DATA(nlattr),
651 nlattr->nla_len,
652 NULL,
653 host_to_target_data_tun_nlattr);
654 } else {
655 gemu_log("Unknown QEMU_IFLA_INFO_KIND %s\n", li_context->name);
656 }
657 break;
658 case QEMU_IFLA_INFO_SLAVE_DATA:
659 if (strncmp(li_context->slave_name, "bridge",
660 li_context->slave_len) == 0) {
661 return host_to_target_for_each_nlattr(NLA_DATA(nlattr),
662 nlattr->nla_len,
663 NULL,
664 host_to_target_slave_data_bridge_nlattr);
665 } else {
666 gemu_log("Unknown QEMU_IFLA_INFO_SLAVE_KIND %s\n",
667 li_context->slave_name);
668 }
669 break;
670 default:
671 gemu_log("Unknown host QEMU_IFLA_INFO type: %d\n", nlattr->nla_type);
672 break;
673 }
674
675 return 0;
676 }
677
678 static abi_long host_to_target_data_inet_nlattr(struct nlattr *nlattr,
679 void *context)
680 {
681 uint32_t *u32;
682 int i;
683
684 switch (nlattr->nla_type) {
685 case QEMU_IFLA_INET_CONF:
686 u32 = NLA_DATA(nlattr);
687 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32);
688 i++) {
689 u32[i] = tswap32(u32[i]);
690 }
691 break;
692 default:
693 gemu_log("Unknown host AF_INET type: %d\n", nlattr->nla_type);
694 }
695 return 0;
696 }
697
698 static abi_long host_to_target_data_inet6_nlattr(struct nlattr *nlattr,
699 void *context)
700 {
701 uint32_t *u32;
702 uint64_t *u64;
703 struct ifla_cacheinfo *ci;
704 int i;
705
706 switch (nlattr->nla_type) {
707 /* binaries */
708 case QEMU_IFLA_INET6_TOKEN:
709 break;
710 /* uint8_t */
711 case QEMU_IFLA_INET6_ADDR_GEN_MODE:
712 break;
713 /* uint32_t */
714 case QEMU_IFLA_INET6_FLAGS:
715 u32 = NLA_DATA(nlattr);
716 *u32 = tswap32(*u32);
717 break;
718 /* uint32_t[] */
719 case QEMU_IFLA_INET6_CONF:
720 u32 = NLA_DATA(nlattr);
721 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32);
722 i++) {
723 u32[i] = tswap32(u32[i]);
724 }
725 break;
726 /* ifla_cacheinfo */
727 case QEMU_IFLA_INET6_CACHEINFO:
728 ci = NLA_DATA(nlattr);
729 ci->max_reasm_len = tswap32(ci->max_reasm_len);
730 ci->tstamp = tswap32(ci->tstamp);
731 ci->reachable_time = tswap32(ci->reachable_time);
732 ci->retrans_time = tswap32(ci->retrans_time);
733 break;
734 /* uint64_t[] */
735 case QEMU_IFLA_INET6_STATS:
736 case QEMU_IFLA_INET6_ICMP6STATS:
737 u64 = NLA_DATA(nlattr);
738 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u64);
739 i++) {
740 u64[i] = tswap64(u64[i]);
741 }
742 break;
743 default:
744 gemu_log("Unknown host AF_INET6 type: %d\n", nlattr->nla_type);
745 }
746 return 0;
747 }
748
749 static abi_long host_to_target_data_spec_nlattr(struct nlattr *nlattr,
750 void *context)
751 {
752 switch (nlattr->nla_type) {
753 case AF_INET:
754 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len,
755 NULL,
756 host_to_target_data_inet_nlattr);
757 case AF_INET6:
758 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len,
759 NULL,
760 host_to_target_data_inet6_nlattr);
761 default:
762 gemu_log("Unknown host AF_SPEC type: %d\n", nlattr->nla_type);
763 break;
764 }
765 return 0;
766 }
767
768 static abi_long host_to_target_data_xdp_nlattr(struct nlattr *nlattr,
769 void *context)
770 {
771 uint32_t *u32;
772
773 switch (nlattr->nla_type) {
774 /* uint8_t */
775 case QEMU_IFLA_XDP_ATTACHED:
776 break;
777 /* uint32_t */
778 case QEMU_IFLA_XDP_PROG_ID:
779 u32 = NLA_DATA(nlattr);
780 *u32 = tswap32(*u32);
781 break;
782 default:
783 gemu_log("Unknown host XDP type: %d\n", nlattr->nla_type);
784 break;
785 }
786 return 0;
787 }
788
789 static abi_long host_to_target_data_link_rtattr(struct rtattr *rtattr)
790 {
791 uint32_t *u32;
792 struct rtnl_link_stats *st;
793 struct rtnl_link_stats64 *st64;
794 struct rtnl_link_ifmap *map;
795 struct linkinfo_context li_context;
796
797 switch (rtattr->rta_type) {
798 /* binary stream */
799 case QEMU_IFLA_ADDRESS:
800 case QEMU_IFLA_BROADCAST:
801 /* string */
802 case QEMU_IFLA_IFNAME:
803 case QEMU_IFLA_QDISC:
804 break;
805 /* uin8_t */
806 case QEMU_IFLA_OPERSTATE:
807 case QEMU_IFLA_LINKMODE:
808 case QEMU_IFLA_CARRIER:
809 case QEMU_IFLA_PROTO_DOWN:
810 break;
811 /* uint32_t */
812 case QEMU_IFLA_MTU:
813 case QEMU_IFLA_LINK:
814 case QEMU_IFLA_WEIGHT:
815 case QEMU_IFLA_TXQLEN:
816 case QEMU_IFLA_CARRIER_CHANGES:
817 case QEMU_IFLA_NUM_RX_QUEUES:
818 case QEMU_IFLA_NUM_TX_QUEUES:
819 case QEMU_IFLA_PROMISCUITY:
820 case QEMU_IFLA_EXT_MASK:
821 case QEMU_IFLA_LINK_NETNSID:
822 case QEMU_IFLA_GROUP:
823 case QEMU_IFLA_MASTER:
824 case QEMU_IFLA_NUM_VF:
825 case QEMU_IFLA_GSO_MAX_SEGS:
826 case QEMU_IFLA_GSO_MAX_SIZE:
827 case QEMU_IFLA_CARRIER_UP_COUNT:
828 case QEMU_IFLA_CARRIER_DOWN_COUNT:
829 case QEMU_IFLA_MIN_MTU:
830 case QEMU_IFLA_MAX_MTU:
831 u32 = RTA_DATA(rtattr);
832 *u32 = tswap32(*u32);
833 break;
834 /* struct rtnl_link_stats */
835 case QEMU_IFLA_STATS:
836 st = RTA_DATA(rtattr);
837 st->rx_packets = tswap32(st->rx_packets);
838 st->tx_packets = tswap32(st->tx_packets);
839 st->rx_bytes = tswap32(st->rx_bytes);
840 st->tx_bytes = tswap32(st->tx_bytes);
841 st->rx_errors = tswap32(st->rx_errors);
842 st->tx_errors = tswap32(st->tx_errors);
843 st->rx_dropped = tswap32(st->rx_dropped);
844 st->tx_dropped = tswap32(st->tx_dropped);
845 st->multicast = tswap32(st->multicast);
846 st->collisions = tswap32(st->collisions);
847
848 /* detailed rx_errors: */
849 st->rx_length_errors = tswap32(st->rx_length_errors);
850 st->rx_over_errors = tswap32(st->rx_over_errors);
851 st->rx_crc_errors = tswap32(st->rx_crc_errors);
852 st->rx_frame_errors = tswap32(st->rx_frame_errors);
853 st->rx_fifo_errors = tswap32(st->rx_fifo_errors);
854 st->rx_missed_errors = tswap32(st->rx_missed_errors);
855
856 /* detailed tx_errors */
857 st->tx_aborted_errors = tswap32(st->tx_aborted_errors);
858 st->tx_carrier_errors = tswap32(st->tx_carrier_errors);
859 st->tx_fifo_errors = tswap32(st->tx_fifo_errors);
860 st->tx_heartbeat_errors = tswap32(st->tx_heartbeat_errors);
861 st->tx_window_errors = tswap32(st->tx_window_errors);
862
863 /* for cslip etc */
864 st->rx_compressed = tswap32(st->rx_compressed);
865 st->tx_compressed = tswap32(st->tx_compressed);
866 break;
867 /* struct rtnl_link_stats64 */
868 case QEMU_IFLA_STATS64:
869 st64 = RTA_DATA(rtattr);
870 st64->rx_packets = tswap64(st64->rx_packets);
871 st64->tx_packets = tswap64(st64->tx_packets);
872 st64->rx_bytes = tswap64(st64->rx_bytes);
873 st64->tx_bytes = tswap64(st64->tx_bytes);
874 st64->rx_errors = tswap64(st64->rx_errors);
875 st64->tx_errors = tswap64(st64->tx_errors);
876 st64->rx_dropped = tswap64(st64->rx_dropped);
877 st64->tx_dropped = tswap64(st64->tx_dropped);
878 st64->multicast = tswap64(st64->multicast);
879 st64->collisions = tswap64(st64->collisions);
880
881 /* detailed rx_errors: */
882 st64->rx_length_errors = tswap64(st64->rx_length_errors);
883 st64->rx_over_errors = tswap64(st64->rx_over_errors);
884 st64->rx_crc_errors = tswap64(st64->rx_crc_errors);
885 st64->rx_frame_errors = tswap64(st64->rx_frame_errors);
886 st64->rx_fifo_errors = tswap64(st64->rx_fifo_errors);
887 st64->rx_missed_errors = tswap64(st64->rx_missed_errors);
888
889 /* detailed tx_errors */
890 st64->tx_aborted_errors = tswap64(st64->tx_aborted_errors);
891 st64->tx_carrier_errors = tswap64(st64->tx_carrier_errors);
892 st64->tx_fifo_errors = tswap64(st64->tx_fifo_errors);
893 st64->tx_heartbeat_errors = tswap64(st64->tx_heartbeat_errors);
894 st64->tx_window_errors = tswap64(st64->tx_window_errors);
895
896 /* for cslip etc */
897 st64->rx_compressed = tswap64(st64->rx_compressed);
898 st64->tx_compressed = tswap64(st64->tx_compressed);
899 break;
900 /* struct rtnl_link_ifmap */
901 case QEMU_IFLA_MAP:
902 map = RTA_DATA(rtattr);
903 map->mem_start = tswap64(map->mem_start);
904 map->mem_end = tswap64(map->mem_end);
905 map->base_addr = tswap64(map->base_addr);
906 map->irq = tswap16(map->irq);
907 break;
908 /* nested */
909 case QEMU_IFLA_LINKINFO:
910 memset(&li_context, 0, sizeof(li_context));
911 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
912 &li_context,
913 host_to_target_data_linkinfo_nlattr);
914 case QEMU_IFLA_AF_SPEC:
915 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
916 NULL,
917 host_to_target_data_spec_nlattr);
918 case QEMU_IFLA_XDP:
919 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
920 NULL,
921 host_to_target_data_xdp_nlattr);
922 default:
923 gemu_log("Unknown host QEMU_IFLA type: %d\n", rtattr->rta_type);
924 break;
925 }
926 return 0;
927 }
928
929 static abi_long host_to_target_data_addr_rtattr(struct rtattr *rtattr)
930 {
931 uint32_t *u32;
932 struct ifa_cacheinfo *ci;
933
934 switch (rtattr->rta_type) {
935 /* binary: depends on family type */
936 case IFA_ADDRESS:
937 case IFA_LOCAL:
938 break;
939 /* string */
940 case IFA_LABEL:
941 break;
942 /* u32 */
943 case IFA_FLAGS:
944 case IFA_BROADCAST:
945 u32 = RTA_DATA(rtattr);
946 *u32 = tswap32(*u32);
947 break;
948 /* struct ifa_cacheinfo */
949 case IFA_CACHEINFO:
950 ci = RTA_DATA(rtattr);
951 ci->ifa_prefered = tswap32(ci->ifa_prefered);
952 ci->ifa_valid = tswap32(ci->ifa_valid);
953 ci->cstamp = tswap32(ci->cstamp);
954 ci->tstamp = tswap32(ci->tstamp);
955 break;
956 default:
957 gemu_log("Unknown host IFA type: %d\n", rtattr->rta_type);
958 break;
959 }
960 return 0;
961 }
962
963 static abi_long host_to_target_data_route_rtattr(struct rtattr *rtattr)
964 {
965 uint32_t *u32;
966 struct rta_cacheinfo *ci;
967
968 switch (rtattr->rta_type) {
969 /* binary: depends on family type */
970 case QEMU_RTA_GATEWAY:
971 case QEMU_RTA_DST:
972 case QEMU_RTA_PREFSRC:
973 break;
974 /* u8 */
975 case QEMU_RTA_PREF:
976 break;
977 /* u32 */
978 case QEMU_RTA_PRIORITY:
979 case QEMU_RTA_TABLE:
980 case QEMU_RTA_OIF:
981 u32 = RTA_DATA(rtattr);
982 *u32 = tswap32(*u32);
983 break;
984 /* struct rta_cacheinfo */
985 case QEMU_RTA_CACHEINFO:
986 ci = RTA_DATA(rtattr);
987 ci->rta_clntref = tswap32(ci->rta_clntref);
988 ci->rta_lastuse = tswap32(ci->rta_lastuse);
989 ci->rta_expires = tswap32(ci->rta_expires);
990 ci->rta_error = tswap32(ci->rta_error);
991 ci->rta_used = tswap32(ci->rta_used);
992 #if defined(RTNETLINK_HAVE_PEERINFO)
993 ci->rta_id = tswap32(ci->rta_id);
994 ci->rta_ts = tswap32(ci->rta_ts);
995 ci->rta_tsage = tswap32(ci->rta_tsage);
996 #endif
997 break;
998 default:
999 gemu_log("Unknown host RTA type: %d\n", rtattr->rta_type);
1000 break;
1001 }
1002 return 0;
1003 }
1004
1005 static abi_long host_to_target_link_rtattr(struct rtattr *rtattr,
1006 uint32_t rtattr_len)
1007 {
1008 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
1009 host_to_target_data_link_rtattr);
1010 }
1011
1012 static abi_long host_to_target_addr_rtattr(struct rtattr *rtattr,
1013 uint32_t rtattr_len)
1014 {
1015 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
1016 host_to_target_data_addr_rtattr);
1017 }
1018
1019 static abi_long host_to_target_route_rtattr(struct rtattr *rtattr,
1020 uint32_t rtattr_len)
1021 {
1022 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
1023 host_to_target_data_route_rtattr);
1024 }
1025
1026 static abi_long host_to_target_data_route(struct nlmsghdr *nlh)
1027 {
1028 uint32_t nlmsg_len;
1029 struct ifinfomsg *ifi;
1030 struct ifaddrmsg *ifa;
1031 struct rtmsg *rtm;
1032
1033 nlmsg_len = nlh->nlmsg_len;
1034 switch (nlh->nlmsg_type) {
1035 case RTM_NEWLINK:
1036 case RTM_DELLINK:
1037 case RTM_GETLINK:
1038 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) {
1039 ifi = NLMSG_DATA(nlh);
1040 ifi->ifi_type = tswap16(ifi->ifi_type);
1041 ifi->ifi_index = tswap32(ifi->ifi_index);
1042 ifi->ifi_flags = tswap32(ifi->ifi_flags);
1043 ifi->ifi_change = tswap32(ifi->ifi_change);
1044 host_to_target_link_rtattr(IFLA_RTA(ifi),
1045 nlmsg_len - NLMSG_LENGTH(sizeof(*ifi)));
1046 }
1047 break;
1048 case RTM_NEWADDR:
1049 case RTM_DELADDR:
1050 case RTM_GETADDR:
1051 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) {
1052 ifa = NLMSG_DATA(nlh);
1053 ifa->ifa_index = tswap32(ifa->ifa_index);
1054 host_to_target_addr_rtattr(IFA_RTA(ifa),
1055 nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
1056 }
1057 break;
1058 case RTM_NEWROUTE:
1059 case RTM_DELROUTE:
1060 case RTM_GETROUTE:
1061 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) {
1062 rtm = NLMSG_DATA(nlh);
1063 rtm->rtm_flags = tswap32(rtm->rtm_flags);
1064 host_to_target_route_rtattr(RTM_RTA(rtm),
1065 nlmsg_len - NLMSG_LENGTH(sizeof(*rtm)));
1066 }
1067 break;
1068 default:
1069 return -TARGET_EINVAL;
1070 }
1071 return 0;
1072 }
1073
1074 static inline abi_long host_to_target_nlmsg_route(struct nlmsghdr *nlh,
1075 size_t len)
1076 {
1077 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_route);
1078 }
1079
1080 static abi_long target_to_host_for_each_rtattr(struct rtattr *rtattr,
1081 size_t len,
1082 abi_long (*target_to_host_rtattr)
1083 (struct rtattr *))
1084 {
1085 unsigned short aligned_rta_len;
1086 abi_long ret;
1087
1088 while (len >= sizeof(struct rtattr)) {
1089 if (tswap16(rtattr->rta_len) < sizeof(struct rtattr) ||
1090 tswap16(rtattr->rta_len) > len) {
1091 break;
1092 }
1093 rtattr->rta_len = tswap16(rtattr->rta_len);
1094 rtattr->rta_type = tswap16(rtattr->rta_type);
1095 ret = target_to_host_rtattr(rtattr);
1096 if (ret < 0) {
1097 return ret;
1098 }
1099
1100 aligned_rta_len = RTA_ALIGN(rtattr->rta_len);
1101 if (aligned_rta_len >= len) {
1102 break;
1103 }
1104 len -= aligned_rta_len;
1105 rtattr = (struct rtattr *)(((char *)rtattr) + aligned_rta_len);
1106 }
1107 return 0;
1108 }
1109
1110 static abi_long target_to_host_data_link_rtattr(struct rtattr *rtattr)
1111 {
1112 switch (rtattr->rta_type) {
1113 default:
1114 gemu_log("Unknown target QEMU_IFLA type: %d\n", rtattr->rta_type);
1115 break;
1116 }
1117 return 0;
1118 }
1119
1120 static abi_long target_to_host_data_addr_rtattr(struct rtattr *rtattr)
1121 {
1122 switch (rtattr->rta_type) {
1123 /* binary: depends on family type */
1124 case IFA_LOCAL:
1125 case IFA_ADDRESS:
1126 break;
1127 default:
1128 gemu_log("Unknown target IFA type: %d\n", rtattr->rta_type);
1129 break;
1130 }
1131 return 0;
1132 }
1133
1134 static abi_long target_to_host_data_route_rtattr(struct rtattr *rtattr)
1135 {
1136 uint32_t *u32;
1137 switch (rtattr->rta_type) {
1138 /* binary: depends on family type */
1139 case QEMU_RTA_DST:
1140 case QEMU_RTA_SRC:
1141 case QEMU_RTA_GATEWAY:
1142 break;
1143 /* u32 */
1144 case QEMU_RTA_PRIORITY:
1145 case QEMU_RTA_OIF:
1146 u32 = RTA_DATA(rtattr);
1147 *u32 = tswap32(*u32);
1148 break;
1149 default:
1150 gemu_log("Unknown target RTA type: %d\n", rtattr->rta_type);
1151 break;
1152 }
1153 return 0;
1154 }
1155
1156 static void target_to_host_link_rtattr(struct rtattr *rtattr,
1157 uint32_t rtattr_len)
1158 {
1159 target_to_host_for_each_rtattr(rtattr, rtattr_len,
1160 target_to_host_data_link_rtattr);
1161 }
1162
1163 static void target_to_host_addr_rtattr(struct rtattr *rtattr,
1164 uint32_t rtattr_len)
1165 {
1166 target_to_host_for_each_rtattr(rtattr, rtattr_len,
1167 target_to_host_data_addr_rtattr);
1168 }
1169
1170 static void target_to_host_route_rtattr(struct rtattr *rtattr,
1171 uint32_t rtattr_len)
1172 {
1173 target_to_host_for_each_rtattr(rtattr, rtattr_len,
1174 target_to_host_data_route_rtattr);
1175 }
1176
1177 static abi_long target_to_host_data_route(struct nlmsghdr *nlh)
1178 {
1179 struct ifinfomsg *ifi;
1180 struct ifaddrmsg *ifa;
1181 struct rtmsg *rtm;
1182
1183 switch (nlh->nlmsg_type) {
1184 case RTM_GETLINK:
1185 break;
1186 case RTM_NEWLINK:
1187 case RTM_DELLINK:
1188 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) {
1189 ifi = NLMSG_DATA(nlh);
1190 ifi->ifi_type = tswap16(ifi->ifi_type);
1191 ifi->ifi_index = tswap32(ifi->ifi_index);
1192 ifi->ifi_flags = tswap32(ifi->ifi_flags);
1193 ifi->ifi_change = tswap32(ifi->ifi_change);
1194 target_to_host_link_rtattr(IFLA_RTA(ifi), nlh->nlmsg_len -
1195 NLMSG_LENGTH(sizeof(*ifi)));
1196 }
1197 break;
1198 case RTM_GETADDR:
1199 case RTM_NEWADDR:
1200 case RTM_DELADDR:
1201 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) {
1202 ifa = NLMSG_DATA(nlh);
1203 ifa->ifa_index = tswap32(ifa->ifa_index);
1204 target_to_host_addr_rtattr(IFA_RTA(ifa), nlh->nlmsg_len -
1205 NLMSG_LENGTH(sizeof(*ifa)));
1206 }
1207 break;
1208 case RTM_GETROUTE:
1209 break;
1210 case RTM_NEWROUTE:
1211 case RTM_DELROUTE:
1212 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) {
1213 rtm = NLMSG_DATA(nlh);
1214 rtm->rtm_flags = tswap32(rtm->rtm_flags);
1215 target_to_host_route_rtattr(RTM_RTA(rtm), nlh->nlmsg_len -
1216 NLMSG_LENGTH(sizeof(*rtm)));
1217 }
1218 break;
1219 default:
1220 return -TARGET_EOPNOTSUPP;
1221 }
1222 return 0;
1223 }
1224
1225 static abi_long target_to_host_nlmsg_route(struct nlmsghdr *nlh, size_t len)
1226 {
1227 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_route);
1228 }
1229 #endif /* CONFIG_RTNETLINK */
1230
1231 static abi_long host_to_target_data_audit(struct nlmsghdr *nlh)
1232 {
1233 switch (nlh->nlmsg_type) {
1234 default:
1235 gemu_log("Unknown host audit message type %d\n",
1236 nlh->nlmsg_type);
1237 return -TARGET_EINVAL;
1238 }
1239 return 0;
1240 }
1241
1242 static inline abi_long host_to_target_nlmsg_audit(struct nlmsghdr *nlh,
1243 size_t len)
1244 {
1245 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_audit);
1246 }
1247
1248 static abi_long target_to_host_data_audit(struct nlmsghdr *nlh)
1249 {
1250 switch (nlh->nlmsg_type) {
1251 case AUDIT_USER:
1252 case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG:
1253 case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2:
1254 break;
1255 default:
1256 gemu_log("Unknown target audit message type %d\n",
1257 nlh->nlmsg_type);
1258 return -TARGET_EINVAL;
1259 }
1260
1261 return 0;
1262 }
1263
1264 static abi_long target_to_host_nlmsg_audit(struct nlmsghdr *nlh, size_t len)
1265 {
1266 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_audit);
1267 }
1268
1269 static abi_long packet_target_to_host_sockaddr(void *host_addr,
1270 abi_ulong target_addr,
1271 socklen_t len)
1272 {
1273 struct sockaddr *addr = host_addr;
1274 struct target_sockaddr *target_saddr;
1275
1276 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1277 if (!target_saddr) {
1278 return -TARGET_EFAULT;
1279 }
1280
1281 memcpy(addr, target_saddr, len);
1282 addr->sa_family = tswap16(target_saddr->sa_family);
1283 /* spkt_protocol is big-endian */
1284
1285 unlock_user(target_saddr, target_addr, 0);
1286 return 0;
1287 }
1288
1289 TargetFdTrans target_packet_trans = {
1290 .target_to_host_addr = packet_target_to_host_sockaddr,
1291 };
1292
1293 #ifdef CONFIG_RTNETLINK
1294 static abi_long netlink_route_target_to_host(void *buf, size_t len)
1295 {
1296 abi_long ret;
1297
1298 ret = target_to_host_nlmsg_route(buf, len);
1299 if (ret < 0) {
1300 return ret;
1301 }
1302
1303 return len;
1304 }
1305
1306 static abi_long netlink_route_host_to_target(void *buf, size_t len)
1307 {
1308 abi_long ret;
1309
1310 ret = host_to_target_nlmsg_route(buf, len);
1311 if (ret < 0) {
1312 return ret;
1313 }
1314
1315 return len;
1316 }
1317
1318 TargetFdTrans target_netlink_route_trans = {
1319 .target_to_host_data = netlink_route_target_to_host,
1320 .host_to_target_data = netlink_route_host_to_target,
1321 };
1322 #endif /* CONFIG_RTNETLINK */
1323
1324 static abi_long netlink_audit_target_to_host(void *buf, size_t len)
1325 {
1326 abi_long ret;
1327
1328 ret = target_to_host_nlmsg_audit(buf, len);
1329 if (ret < 0) {
1330 return ret;
1331 }
1332
1333 return len;
1334 }
1335
1336 static abi_long netlink_audit_host_to_target(void *buf, size_t len)
1337 {
1338 abi_long ret;
1339
1340 ret = host_to_target_nlmsg_audit(buf, len);
1341 if (ret < 0) {
1342 return ret;
1343 }
1344
1345 return len;
1346 }
1347
1348 TargetFdTrans target_netlink_audit_trans = {
1349 .target_to_host_data = netlink_audit_target_to_host,
1350 .host_to_target_data = netlink_audit_host_to_target,
1351 };
1352
1353 /* signalfd siginfo conversion */
1354
1355 static void
1356 host_to_target_signalfd_siginfo(struct signalfd_siginfo *tinfo,
1357 const struct signalfd_siginfo *info)
1358 {
1359 int sig = host_to_target_signal(info->ssi_signo);
1360
1361 /* linux/signalfd.h defines a ssi_addr_lsb
1362 * not defined in sys/signalfd.h but used by some kernels
1363 */
1364
1365 #ifdef BUS_MCEERR_AO
1366 if (tinfo->ssi_signo == SIGBUS &&
1367 (tinfo->ssi_code == BUS_MCEERR_AR ||
1368 tinfo->ssi_code == BUS_MCEERR_AO)) {
1369 uint16_t *ssi_addr_lsb = (uint16_t *)(&info->ssi_addr + 1);
1370 uint16_t *tssi_addr_lsb = (uint16_t *)(&tinfo->ssi_addr + 1);
1371 *tssi_addr_lsb = tswap16(*ssi_addr_lsb);
1372 }
1373 #endif
1374
1375 tinfo->ssi_signo = tswap32(sig);
1376 tinfo->ssi_errno = tswap32(tinfo->ssi_errno);
1377 tinfo->ssi_code = tswap32(info->ssi_code);
1378 tinfo->ssi_pid = tswap32(info->ssi_pid);
1379 tinfo->ssi_uid = tswap32(info->ssi_uid);
1380 tinfo->ssi_fd = tswap32(info->ssi_fd);
1381 tinfo->ssi_tid = tswap32(info->ssi_tid);
1382 tinfo->ssi_band = tswap32(info->ssi_band);
1383 tinfo->ssi_overrun = tswap32(info->ssi_overrun);
1384 tinfo->ssi_trapno = tswap32(info->ssi_trapno);
1385 tinfo->ssi_status = tswap32(info->ssi_status);
1386 tinfo->ssi_int = tswap32(info->ssi_int);
1387 tinfo->ssi_ptr = tswap64(info->ssi_ptr);
1388 tinfo->ssi_utime = tswap64(info->ssi_utime);
1389 tinfo->ssi_stime = tswap64(info->ssi_stime);
1390 tinfo->ssi_addr = tswap64(info->ssi_addr);
1391 }
1392
1393 static abi_long host_to_target_data_signalfd(void *buf, size_t len)
1394 {
1395 int i;
1396
1397 for (i = 0; i < len; i += sizeof(struct signalfd_siginfo)) {
1398 host_to_target_signalfd_siginfo(buf + i, buf + i);
1399 }
1400
1401 return len;
1402 }
1403
1404 TargetFdTrans target_signalfd_trans = {
1405 .host_to_target_data = host_to_target_data_signalfd,
1406 };
1407
1408 static abi_long swap_data_eventfd(void *buf, size_t len)
1409 {
1410 uint64_t *counter = buf;
1411 int i;
1412
1413 if (len < sizeof(uint64_t)) {
1414 return -EINVAL;
1415 }
1416
1417 for (i = 0; i < len; i += sizeof(uint64_t)) {
1418 *counter = tswap64(*counter);
1419 counter++;
1420 }
1421
1422 return len;
1423 }
1424
1425 TargetFdTrans target_eventfd_trans = {
1426 .host_to_target_data = swap_data_eventfd,
1427 .target_to_host_data = swap_data_eventfd,
1428 };
1429
1430 #if (defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)) || \
1431 (defined(CONFIG_INOTIFY1) && defined(TARGET_NR_inotify_init1) && \
1432 defined(__NR_inotify_init1))
1433 static abi_long host_to_target_data_inotify(void *buf, size_t len)
1434 {
1435 struct inotify_event *ev;
1436 int i;
1437 uint32_t name_len;
1438
1439 for (i = 0; i < len; i += sizeof(struct inotify_event) + name_len) {
1440 ev = (struct inotify_event *)((char *)buf + i);
1441 name_len = ev->len;
1442
1443 ev->wd = tswap32(ev->wd);
1444 ev->mask = tswap32(ev->mask);
1445 ev->cookie = tswap32(ev->cookie);
1446 ev->len = tswap32(name_len);
1447 }
1448
1449 return len;
1450 }
1451
1452 TargetFdTrans target_inotify_trans = {
1453 .host_to_target_data = host_to_target_data_inotify,
1454 };
1455 #endif