VirtualBox

source: vbox/trunk/src/VBox/Main/src-server/darwin/NetIf-darwin.cpp

Last change on this file was 106061, checked in by vboxsync, 8 weeks ago

Copyright year updates by scm.

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1/* $Id: NetIf-darwin.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2/** @file
3 * Main - NetIfList, Darwin implementation.
4 */
5
6/*
7 * Copyright (C) 2008-2024 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * SPDX-License-Identifier: GPL-3.0-only
26 */
27
28
29
30/*********************************************************************************************************************************
31* Header Files *
32*********************************************************************************************************************************/
33#define LOG_GROUP LOG_GROUP_MAIN_HOST
34
35/*
36 * Deal with conflicts first.
37 * PVM - BSD mess, that FreeBSD has correct a long time ago.
38 * iprt/types.h before sys/param.h - prevents UINT32_C and friends.
39 */
40#include <iprt/types.h>
41#include <sys/param.h>
42#undef PVM
43
44#include <iprt/errcore.h>
45#include <iprt/alloc.h>
46
47#include <string.h>
48#include <sys/socket.h>
49#include <sys/ioctl.h>
50#include <sys/sysctl.h>
51#include <netinet/in.h>
52#include <net/if.h>
53#include <net/if_dl.h>
54#include <net/if_types.h>
55#include <net/route.h>
56#include <ifaddrs.h>
57#include <errno.h>
58#include <unistd.h>
59#include <list>
60
61#include "HostNetworkInterfaceImpl.h"
62#include "netif.h"
63#include "iokit.h"
64#include "LoggingNew.h"
65
66#if 0
67int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
68{
69 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
70 if (sock < 0)
71 {
72 Log(("NetIfList: socket() -> %d\n", errno));
73 return NULL;
74 }
75 struct ifaddrs *IfAddrs, *pAddr;
76 int iRc = getifaddrs(&IfAddrs);
77 if (iRc)
78 {
79 close(sock);
80 Log(("NetIfList: getifaddrs() -> %d\n", iRc));
81 return VERR_INTERNAL_ERROR;
82 }
83
84 PDARWINETHERNIC pEtherNICs = DarwinGetEthernetControllers();
85 while (pEtherNICs)
86 {
87 size_t cbNameLen = strlen(pEtherNICs->szName) + 1;
88 PNETIFINFO pNew = (PNETIFINFO)RTMemAllocZ(RT_OFFSETOF(NETIFINFO, szName[cbNameLen]));
89 pNew->MACAddress = pEtherNICs->Mac;
90 pNew->enmMediumType = NETIF_T_ETHERNET;
91 pNew->Uuid = pEtherNICs->Uuid;
92 Assert(sizeof(pNew->szShortName) > sizeof(pEtherNICs->szBSDName));
93 memcpy(pNew->szShortName, pEtherNICs->szBSDName, sizeof(pEtherNICs->szBSDName));
94 pNew->szShortName[sizeof(pEtherNICs->szBSDName)] = '\0';
95 memcpy(pNew->szName, pEtherNICs->szName, cbNameLen);
96
97 struct ifreq IfReq;
98 RTStrCopy(IfReq.ifr_name, sizeof(IfReq.ifr_name), pNew->szShortName);
99 if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
100 {
101 Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
102 pNew->enmStatus = NETIF_S_UNKNOWN;
103 }
104 else
105 pNew->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
106
107 for (pAddr = IfAddrs; pAddr != NULL; pAddr = pAddr->ifa_next)
108 {
109 if (strcmp(pNew->szShortName, pAddr->ifa_name))
110 continue;
111
112 struct sockaddr_in *pIPAddr, *pIPNetMask;
113 struct sockaddr_in6 *pIPv6Addr, *pIPv6NetMask;
114
115 switch (pAddr->ifa_addr->sa_family)
116 {
117 case AF_INET:
118 if (pNew->IPAddress.u)
119 break;
120 pIPAddr = (struct sockaddr_in *)pAddr->ifa_addr;
121 Assert(sizeof(pNew->IPAddress) == sizeof(pIPAddr->sin_addr));
122 pNew->IPAddress.u = pIPAddr->sin_addr.s_addr;
123 pIPNetMask = (struct sockaddr_in *)pAddr->ifa_netmask;
124 Assert(pIPNetMask->sin_family == AF_INET);
125 Assert(sizeof(pNew->IPNetMask) == sizeof(pIPNetMask->sin_addr));
126 pNew->IPNetMask.u = pIPNetMask->sin_addr.s_addr;
127 break;
128 case AF_INET6:
129 if (pNew->IPv6Address.s.Lo || pNew->IPv6Address.s.Hi)
130 break;
131 pIPv6Addr = (struct sockaddr_in6 *)pAddr->ifa_addr;
132 Assert(sizeof(pNew->IPv6Address) == sizeof(pIPv6Addr->sin6_addr));
133 memcpy(pNew->IPv6Address.au8,
134 pIPv6Addr->sin6_addr.__u6_addr.__u6_addr8,
135 sizeof(pNew->IPv6Address));
136 pIPv6NetMask = (struct sockaddr_in6 *)pAddr->ifa_netmask;
137 Assert(pIPv6NetMask->sin6_family == AF_INET6);
138 Assert(sizeof(pNew->IPv6NetMask) == sizeof(pIPv6NetMask->sin6_addr));
139 memcpy(pNew->IPv6NetMask.au8,
140 pIPv6NetMask->sin6_addr.__u6_addr.__u6_addr8,
141 sizeof(pNew->IPv6NetMask));
142 break;
143 }
144 }
145
146 ComObjPtr<HostNetworkInterface> IfObj;
147 IfObj.createObject();
148 if (SUCCEEDED(IfObj->init(Bstr(pEtherNICs->szName), HostNetworkInterfaceType_Bridged, pNew)))
149 list.push_back(IfObj);
150 RTMemFree(pNew);
151
152 /* next, free current */
153 void *pvFree = pEtherNICs;
154 pEtherNICs = pEtherNICs->pNext;
155 RTMemFree(pvFree);
156 }
157
158 freeifaddrs(IfAddrs);
159 close(sock);
160 return VINF_SUCCESS;
161}
162#else
163
164#define ROUNDUP(a) \
165 (((a) & (sizeof(u_long) - 1)) ? (1 + ((a) | (sizeof(u_long) - 1))) : (a))
166#define ADVANCE(x, n) (x += (n)->sa_len ? ROUNDUP((n)->sa_len) : sizeof(u_long))
167
168static void extractAddresses(int iAddrMask, caddr_t cp, caddr_t cplim, struct sockaddr **pAddresses)
169{
170 struct sockaddr *sa;
171
172 for (int i = 0; i < RTAX_MAX && cp < cplim; i++) {
173 if (iAddrMask & (1 << i))
174 {
175 sa = (struct sockaddr *)cp;
176
177 pAddresses[i] = sa;
178
179 ADVANCE(cp, sa);
180 }
181 else
182 pAddresses[i] = NULL;
183 }
184}
185
186static void extractAddressesToNetInfo(int iAddrMask, caddr_t cp, caddr_t cplim, PNETIFINFO pInfo)
187{
188 struct sockaddr *addresses[RTAX_MAX];
189
190 extractAddresses(iAddrMask, cp, cplim, addresses);
191 switch (addresses[RTAX_IFA]->sa_family)
192 {
193 case AF_INET:
194 if (!pInfo->IPAddress.u)
195 {
196 pInfo->IPAddress.u = ((struct sockaddr_in *)addresses[RTAX_IFA])->sin_addr.s_addr;
197 pInfo->IPNetMask.u = ((struct sockaddr_in *)addresses[RTAX_NETMASK])->sin_addr.s_addr;
198 }
199 break;
200 case AF_INET6:
201 if (!pInfo->IPv6Address.s.Lo && !pInfo->IPv6Address.s.Hi)
202 {
203 memcpy(pInfo->IPv6Address.au8,
204 ((struct sockaddr_in6 *)addresses[RTAX_IFA])->sin6_addr.__u6_addr.__u6_addr8,
205 sizeof(pInfo->IPv6Address));
206 memcpy(pInfo->IPv6NetMask.au8,
207 ((struct sockaddr_in6 *)addresses[RTAX_NETMASK])->sin6_addr.__u6_addr.__u6_addr8,
208 sizeof(pInfo->IPv6NetMask));
209 }
210 break;
211 default:
212 Log(("NetIfList: Unsupported address family: %u\n", addresses[RTAX_IFA]->sa_family));
213 break;
214 }
215}
216
217static int getDefaultIfaceIndex(unsigned short *pu16Index)
218{
219 size_t cbNeeded;
220 char *pBuf, *pNext;
221 int aiMib[6];
222 struct sockaddr *addresses[RTAX_MAX];
223
224 aiMib[0] = CTL_NET;
225 aiMib[1] = PF_ROUTE;
226 aiMib[2] = 0;
227 aiMib[3] = PF_INET; /* address family */
228 aiMib[4] = NET_RT_DUMP;
229 aiMib[5] = 0;
230
231 if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
232 {
233 Log(("getDefaultIfaceIndex: Failed to get estimate for list size (errno=%d).\n", errno));
234 return RTErrConvertFromErrno(errno);
235 }
236 if ((pBuf = (char *)RTMemAlloc(cbNeeded)) == NULL)
237 return VERR_NO_MEMORY;
238 if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
239 {
240 RTMemFree(pBuf);
241 Log(("getDefaultIfaceIndex: Failed to retrieve interface table (errno=%d).\n", errno));
242 return RTErrConvertFromErrno(errno);
243 }
244
245 char *pEnd = pBuf + cbNeeded;
246 struct rt_msghdr *pRtMsg;
247 for (pNext = pBuf; pNext < pEnd; pNext += pRtMsg->rtm_msglen)
248 {
249 pRtMsg = (struct rt_msghdr *)pNext;
250
251 if (pRtMsg->rtm_type != RTM_GET)
252 {
253 Log(("getDefaultIfaceIndex: Got message %u while expecting %u.\n",
254 pRtMsg->rtm_type, RTM_GET));
255 //vrc = VERR_INTERNAL_ERROR;
256 continue;
257 }
258 if ((char*)(pRtMsg + 1) < pEnd)
259 {
260 /* Extract addresses from the message. */
261 extractAddresses(pRtMsg->rtm_addrs, (char *)(pRtMsg + 1),
262 pRtMsg->rtm_msglen + 1 + (char *)pRtMsg, addresses);
263 if ((pRtMsg->rtm_addrs & RTA_DST)
264 && (pRtMsg->rtm_addrs & RTA_NETMASK))
265 {
266 if (addresses[RTAX_DST]->sa_family != AF_INET)
267 continue;
268 struct sockaddr_in *addr = (struct sockaddr_in *)addresses[RTAX_DST];
269 struct sockaddr_in *mask = (struct sockaddr_in *)addresses[RTAX_NETMASK];
270 if ((addr->sin_addr.s_addr == INADDR_ANY) &&
271 mask &&
272 (ntohl(mask->sin_addr.s_addr) == 0L ||
273 mask->sin_len == 0))
274 {
275 *pu16Index = pRtMsg->rtm_index;
276 RTMemFree(pBuf);
277 return VINF_SUCCESS;
278 }
279 }
280 }
281 }
282 RTMemFree(pBuf);
283 return 0; /* Failed to find default interface, take the first one in the list. */
284}
285
286int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
287{
288 int vrc = VINF_SUCCESS;
289 size_t cbNeeded;
290 char *pBuf, *pNext;
291 int aiMib[6];
292 unsigned short u16DefaultIface = 0; /* initialized to shut up gcc */
293
294 /* Get the index of the interface associated with default route. */
295 vrc = getDefaultIfaceIndex(&u16DefaultIface);
296 if (RT_FAILURE(vrc))
297 return vrc;
298
299 aiMib[0] = CTL_NET;
300 aiMib[1] = PF_ROUTE;
301 aiMib[2] = 0;
302 aiMib[3] = 0; /* address family */
303 aiMib[4] = NET_RT_IFLIST;
304 aiMib[5] = 0;
305
306 if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
307 {
308 Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
309 return RTErrConvertFromErrno(errno);
310 }
311 if ((pBuf = (char*)RTMemAlloc(cbNeeded)) == NULL)
312 return VERR_NO_MEMORY;
313 if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
314 {
315 RTMemFree(pBuf);
316 Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
317 return RTErrConvertFromErrno(errno);
318 }
319
320 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
321 if (sock < 0)
322 {
323 RTMemFree(pBuf);
324 Log(("NetIfList: socket() -> %d\n", errno));
325 return RTErrConvertFromErrno(errno);
326 }
327
328 PDARWINETHERNIC pNIC;
329 PDARWINETHERNIC pEtherNICs = DarwinGetEthernetControllers();
330
331 char *pEnd = pBuf + cbNeeded;
332 for (pNext = pBuf; pNext < pEnd;)
333 {
334 struct if_msghdr *pIfMsg = (struct if_msghdr *)pNext;
335
336 if (pIfMsg->ifm_type != RTM_IFINFO)
337 {
338 Log(("NetIfList: Got message %u while expecting %u.\n",
339 pIfMsg->ifm_type, RTM_IFINFO));
340 vrc = VERR_INTERNAL_ERROR;
341 break;
342 }
343 struct sockaddr_dl *pSdl = (struct sockaddr_dl *)(pIfMsg + 1);
344
345 size_t cbNameLen = pSdl->sdl_nlen + 1;
346 Assert(pSdl->sdl_nlen < sizeof(pNIC->szBSDName));
347 for (pNIC = pEtherNICs; pNIC; pNIC = pNIC->pNext)
348 if ( !strncmp(pSdl->sdl_data, pNIC->szBSDName, pSdl->sdl_nlen)
349 && pNIC->szBSDName[pSdl->sdl_nlen] == '\0')
350 {
351 cbNameLen = strlen(pNIC->szName) + 1;
352 break;
353 }
354 PNETIFINFO pNew = (PNETIFINFO)RTMemAllocZ(RT_UOFFSETOF_DYN(NETIFINFO, szName[cbNameLen]));
355 if (!pNew)
356 {
357 vrc = VERR_NO_MEMORY;
358 break;
359 }
360 memcpy(pNew->MACAddress.au8, LLADDR(pSdl), sizeof(pNew->MACAddress.au8));
361 pNew->enmMediumType = NETIF_T_ETHERNET;
362 Assert(sizeof(pNew->szShortName) > pSdl->sdl_nlen);
363 memcpy(pNew->szShortName, pSdl->sdl_data, RT_MIN(pSdl->sdl_nlen, sizeof(pNew->szShortName) - 1));
364
365 /*
366 * If we found the adapter in the list returned by
367 * DarwinGetEthernetControllers() copy the name and UUID from there.
368 */
369 if (pNIC)
370 {
371 memcpy(pNew->szName, pNIC->szName, cbNameLen);
372 pNew->Uuid = pNIC->Uuid;
373 pNew->fWireless = pNIC->fWireless;
374 }
375 else
376 {
377 memcpy(pNew->szName, pSdl->sdl_data, pSdl->sdl_nlen);
378 /* Generate UUID from name and MAC address. */
379 RTUUID uuid;
380 RTUuidClear(&uuid);
381 memcpy(&uuid, pNew->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
382 uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
383 uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
384 memcpy(uuid.Gen.au8Node, pNew->MACAddress.au8, sizeof(uuid.Gen.au8Node));
385 pNew->Uuid = uuid;
386 }
387
388 pNext += pIfMsg->ifm_msglen;
389 while (pNext < pEnd)
390 {
391 struct ifa_msghdr *pIfAddrMsg = (struct ifa_msghdr *)pNext;
392
393 if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
394 break;
395 extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
396 (char *)(pIfAddrMsg + 1),
397 pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
398 pNew);
399 pNext += pIfAddrMsg->ifam_msglen;
400 }
401
402 if (pSdl->sdl_type == IFT_ETHER)
403 {
404 struct ifreq IfReq;
405 RTStrCopy(IfReq.ifr_name, sizeof(IfReq.ifr_name), pNew->szShortName);
406 if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
407 {
408 Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
409 pNew->enmStatus = NETIF_S_UNKNOWN;
410 }
411 else
412 pNew->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
413
414 HostNetworkInterfaceType_T enmType;
415 if (strncmp(pNew->szName, RT_STR_TUPLE("vboxnet")))
416 enmType = HostNetworkInterfaceType_Bridged;
417 else
418 enmType = HostNetworkInterfaceType_HostOnly;
419
420 ComObjPtr<HostNetworkInterface> IfObj;
421 IfObj.createObject();
422 if (SUCCEEDED(IfObj->init(Bstr(pNew->szName), enmType, pNew)))
423 {
424 /* Make sure the default interface gets to the beginning. */
425 if (pIfMsg->ifm_index == u16DefaultIface)
426 list.push_front(IfObj);
427 else
428 list.push_back(IfObj);
429 }
430 }
431 RTMemFree(pNew);
432 }
433 for (pNIC = pEtherNICs; pNIC;)
434 {
435 void *pvFree = pNIC;
436 pNIC = pNIC->pNext;
437 RTMemFree(pvFree);
438 }
439 close(sock);
440 RTMemFree(pBuf);
441 return vrc;
442}
443
444int NetIfGetConfigByName(PNETIFINFO pInfo)
445{
446 int vrc = VINF_SUCCESS;
447 size_t cbNeeded;
448 char *pBuf, *pNext;
449 int aiMib[6];
450
451 aiMib[0] = CTL_NET;
452 aiMib[1] = PF_ROUTE;
453 aiMib[2] = 0;
454 aiMib[3] = 0; /* address family */
455 aiMib[4] = NET_RT_IFLIST;
456 aiMib[5] = 0;
457
458 if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
459 {
460 Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
461 return RTErrConvertFromErrno(errno);
462 }
463 if ((pBuf = (char*)RTMemAlloc(cbNeeded)) == NULL)
464 return VERR_NO_MEMORY;
465 if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
466 {
467 RTMemFree(pBuf);
468 Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
469 return RTErrConvertFromErrno(errno);
470 }
471
472 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
473 if (sock < 0)
474 {
475 RTMemFree(pBuf);
476 Log(("NetIfList: socket() -> %d\n", errno));
477 return RTErrConvertFromErrno(errno);
478 }
479
480 char *pEnd = pBuf + cbNeeded;
481 for (pNext = pBuf; pNext < pEnd;)
482 {
483 struct if_msghdr *pIfMsg = (struct if_msghdr *)pNext;
484
485 if (pIfMsg->ifm_type != RTM_IFINFO)
486 {
487 Log(("NetIfList: Got message %u while expecting %u.\n",
488 pIfMsg->ifm_type, RTM_IFINFO));
489 vrc = VERR_INTERNAL_ERROR;
490 break;
491 }
492 struct sockaddr_dl *pSdl = (struct sockaddr_dl *)(pIfMsg + 1);
493
494 bool fSkip = !!strncmp(pInfo->szShortName, pSdl->sdl_data, pSdl->sdl_nlen)
495 || pInfo->szShortName[pSdl->sdl_nlen] != '\0';
496
497 pNext += pIfMsg->ifm_msglen;
498 while (pNext < pEnd)
499 {
500 struct ifa_msghdr *pIfAddrMsg = (struct ifa_msghdr *)pNext;
501
502 if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
503 break;
504 if (!fSkip)
505 extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
506 (char *)(pIfAddrMsg + 1),
507 pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
508 pInfo);
509 pNext += pIfAddrMsg->ifam_msglen;
510 }
511
512 if (!fSkip && pSdl->sdl_type == IFT_ETHER)
513 {
514 size_t cbNameLen = pSdl->sdl_nlen + 1;
515 memcpy(pInfo->MACAddress.au8, LLADDR(pSdl), sizeof(pInfo->MACAddress.au8));
516 pInfo->enmMediumType = NETIF_T_ETHERNET;
517 /* Generate UUID from name and MAC address. */
518 RTUUID uuid;
519 RTUuidClear(&uuid);
520 memcpy(&uuid, pInfo->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
521 uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
522 uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
523 memcpy(uuid.Gen.au8Node, pInfo->MACAddress.au8, sizeof(uuid.Gen.au8Node));
524 pInfo->Uuid = uuid;
525
526 struct ifreq IfReq;
527 RTStrCopy(IfReq.ifr_name, sizeof(IfReq.ifr_name), pInfo->szShortName);
528 if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
529 {
530 Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
531 pInfo->enmStatus = NETIF_S_UNKNOWN;
532 }
533 else
534 pInfo->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
535
536 return VINF_SUCCESS;
537 }
538 }
539 close(sock);
540 RTMemFree(pBuf);
541 return vrc;
542}
543
544/**
545 * Retrieve the physical link speed in megabits per second. If the interface is
546 * not up or otherwise unavailable the zero speed is returned.
547 *
548 * @returns VBox status code.
549 *
550 * @param pcszIfName Interface name.
551 * @param puMbits Where to store the link speed.
552 */
553int NetIfGetLinkSpeed(const char *pcszIfName, uint32_t *puMbits)
554{
555 RT_NOREF(pcszIfName, puMbits);
556 return VERR_NOT_IMPLEMENTED;
557}
558#endif
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