2 * Copyright (c) 2006 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/platform/vkernel/platform/init.c,v 1.42 2007/07/02 03:44:12 dillon Exp $
37 #include <sys/types.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
43 #include <sys/random.h>
44 #include <sys/vkernel.h>
46 #include <sys/reboot.h>
48 #include <sys/msgbuf.h>
49 #include <sys/vmspace.h>
50 #include <sys/socket.h>
51 #include <sys/sockio.h>
52 #include <vm/vm_page.h>
54 #include <machine/globaldata.h>
55 #include <machine/tls.h>
56 #include <machine/md_var.h>
57 #include <machine/vmparam.h>
60 #include <net/if_arp.h>
61 #include <net/ethernet.h>
62 #include <net/bridge/if_bridgevar.h>
63 #include <netinet/in.h>
64 #include <arpa/inet.h>
76 vm_paddr_t phys_avail[16];
78 vm_paddr_t Maxmem_bytes;
80 struct vkdisk_info DiskInfo[VKDISK_MAX];
82 struct vknetif_info NetifInfo[VKNETIF_MAX];
88 vm_offset_t virtual_start;
89 vm_offset_t virtual_end;
90 vm_offset_t kernel_vm_end;
91 vm_offset_t crashdumpmap;
92 vm_offset_t clean_sva;
93 vm_offset_t clean_eva;
94 struct msgbuf *msgbufp;
97 vpte_t *KernelPTA; /* Warning: Offset for direct VA translation */
98 u_int cpu_feature; /* XXX */
99 u_int tsc_present; /* XXX */
100 int optcpus; /* number of cpus - see mp_start() */
102 struct privatespace *CPU_prvspace;
104 static struct trapframe proc0_tf;
105 static void *proc0paddr;
107 static void init_sys_memory(char *imageFile);
108 static void init_kern_memory(void);
109 static void init_globaldata(void);
110 static void init_vkernel(void);
111 static void init_disk(char *diskExp[], int diskFileNum, enum vkdisk_type type);
112 static void init_netif(char *netifExp[], int netifFileNum);
113 static void writepid( void );
114 static void cleanpid( void );
115 static void usage(const char *ctl, ...);
118 static char **save_av;
121 * Kernel startup for virtual kernels - standard main()
124 main(int ac, char **av)
126 char *memImageFile = NULL;
127 char *netifFile[VKNETIF_MAX];
128 char *diskFile[VKDISK_MAX];
129 char *cdFile[VKDISK_MAX];
131 int netifFileNum = 0;
144 kernel_mem_readonly = 1;
149 while ((c = getopt(ac, av, "c:svm:n:r:e:i:p:I:U")) != -1) {
153 * name=value:name=value:name=value...
156 kern_envp = malloc(n + 2);
157 for (i = 0; i < n; ++i) {
158 if (optarg[i] == ':')
161 kern_envp[i] = optarg[i];
167 boothowto |= RB_SINGLE;
173 memImageFile = optarg;
176 if (netifFileNum < VKNETIF_MAX)
177 netifFile[netifFileNum++] = strdup(optarg);
180 if (diskFileNum + cdFileNum < VKDISK_MAX)
181 diskFile[diskFileNum++] = strdup(optarg);
184 if (diskFileNum + cdFileNum < VKDISK_MAX)
185 cdFile[cdFileNum++] = strdup(optarg);
188 Maxmem_bytes = strtoull(optarg, &suffix, 0);
205 usage("Bad maxmem option");
213 * This value is set up by mp_start(), don't just
217 optcpus = strtol(optarg, NULL, 0);
218 if (optcpus < 1 || optcpus > MAXCPU)
219 usage("Bad ncpus, valid range is 1-%d", MAXCPU);
221 if (strtol(optarg, NULL, 0) != 1) {
222 usage("You built a UP vkernel, only 1 cpu!");
230 kernel_mem_readonly = 0;
237 init_sys_memory(memImageFile);
242 init_disk(diskFile, diskFileNum, VKD_DISK);
243 init_disk(cdFile, cdFileNum, VKD_CD);
244 init_netif(netifFile, netifFileNum);
252 * Initialize system memory. This is the virtual kernel's 'RAM'.
256 init_sys_memory(char *imageFile)
263 * Figure out the system memory image size. If an image file was
264 * specified and -m was not specified, use the image file's size.
267 if (imageFile && stat(imageFile, &st) == 0 && Maxmem_bytes == 0)
268 Maxmem_bytes = (vm_paddr_t)st.st_size;
269 if ((imageFile == NULL || stat(imageFile, &st) < 0) &&
271 err(1, "Cannot create new memory file %s unless "
272 "system memory size is specified with -m",
278 * Maxmem must be known at this time
280 if (Maxmem_bytes < 32 * 1024 * 1024 || (Maxmem_bytes & SEG_MASK)) {
281 err(1, "Bad maxmem specification: 32MB minimum, "
282 "multiples of %dMB only",
283 SEG_SIZE / 1024 / 1024);
288 * Generate an image file name if necessary, then open/create the
289 * file exclusively locked. Do not allow multiple virtual kernels
290 * to use the same image file.
292 if (imageFile == NULL) {
293 for (i = 0; i < 1000000; ++i) {
294 asprintf(&imageFile, "/var/vkernel/memimg.%06d", i);
296 O_RDWR|O_CREAT|O_EXLOCK|O_NONBLOCK, 0644);
297 if (fd < 0 && errno == EWOULDBLOCK) {
304 fd = open(imageFile, O_RDWR|O_CREAT|O_EXLOCK|O_NONBLOCK, 0644);
306 printf("Using memory file: %s\n", imageFile);
307 if (fd < 0 || fstat(fd, &st) < 0) {
308 err(1, "Unable to open/create %s", imageFile);
313 * Truncate or extend the file as necessary.
315 if (st.st_size > Maxmem_bytes) {
316 ftruncate(fd, Maxmem_bytes);
317 } else if (st.st_size < Maxmem_bytes) {
319 off_t off = st.st_size & ~SEG_MASK;
321 kprintf("%s: Reserving blocks for memory image\n", imageFile);
322 zmem = malloc(SEG_SIZE);
323 bzero(zmem, SEG_SIZE);
324 lseek(fd, off, SEEK_SET);
325 while (off < Maxmem_bytes) {
326 if (write(fd, zmem, SEG_SIZE) != SEG_SIZE) {
327 err(1, "Unable to reserve blocks for memory image");
333 err(1, "Unable to reserve blocks for memory image");
337 Maxmem = Maxmem_bytes >> PAGE_SHIFT;
341 * Initialize kernel memory. This reserves kernel virtual memory by using
347 init_kern_memory(void)
353 char *topofstack = &dummy;
358 * Memory map our kernel virtual memory space. Note that the
359 * kernel image itself is not made part of this memory for the
362 * The memory map must be segment-aligned so we can properly
365 * If the system kernel has a different MAXDSIZ, it might not
366 * be possible to map kernel memory in its prefered location.
367 * Try a number of different locations.
369 try = (void *)0x40000000;
371 while ((char *)try + KERNEL_KVA_SIZE < topofstack) {
372 base = mmap(try, KERNEL_KVA_SIZE, PROT_READ|PROT_WRITE,
373 MAP_FILE|MAP_SHARED|MAP_VPAGETABLE,
377 if (base != MAP_FAILED)
378 munmap(base, KERNEL_KVA_SIZE);
379 try = (char *)try + 0x10000000;
382 err(1, "Unable to mmap() kernel virtual memory!");
385 madvise(base, KERNEL_KVA_SIZE, MADV_NOSYNC);
386 KvaStart = (vm_offset_t)base;
387 KvaSize = KERNEL_KVA_SIZE;
388 KvaEnd = KvaStart + KvaSize;
389 printf("KVM mapped at %p-%p\n", (void *)KvaStart, (void *)KvaEnd);
392 * Create a top-level page table self-mapping itself.
394 * Initialize the page directory at physical page index 0 to point
395 * to an array of page table pages starting at physical page index 1
397 lseek(MemImageFd, 0L, 0);
398 for (i = 0; i < KERNEL_KVA_SIZE / SEG_SIZE; ++i) {
399 pte = ((i + 1) * PAGE_SIZE) | VPTE_V | VPTE_R | VPTE_W;
400 write(MemImageFd, &pte, sizeof(pte));
404 * Initialize the PTEs in the page table pages required to map the
405 * page table itself. This includes mapping the page directory page
406 * at the base so we go one more loop then normal.
408 lseek(MemImageFd, PAGE_SIZE, 0);
409 for (i = 0; i <= KERNEL_KVA_SIZE / SEG_SIZE * sizeof(vpte_t); ++i) {
410 pte = (i * PAGE_SIZE) | VPTE_V | VPTE_R | VPTE_W;
411 write(MemImageFd, &pte, sizeof(pte));
415 * Initialize remaining PTEs to 0. We may be reusing a memory image
416 * file. This is approximately a megabyte.
418 i = (KERNEL_KVA_SIZE / PAGE_SIZE - i) * sizeof(pte);
419 zero = malloc(PAGE_SIZE);
420 bzero(zero, PAGE_SIZE);
422 write(MemImageFd, zero, (i > PAGE_SIZE) ? PAGE_SIZE : i);
423 i = i - ((i > PAGE_SIZE) ? PAGE_SIZE : i);
428 * Enable the page table and calculate pointers to our self-map
429 * for easy kernel page table manipulation.
431 * KernelPTA must be offset so we can do direct VA translations
433 mcontrol(base, KERNEL_KVA_SIZE, MADV_SETMAP,
434 0 | VPTE_R | VPTE_W | VPTE_V);
435 KernelPTD = (vpte_t *)base; /* pg directory */
436 KernelPTA = (vpte_t *)((char *)base + PAGE_SIZE); /* pg table pages */
437 KernelPTA -= KvaStart >> PAGE_SHIFT;
440 * phys_avail[] represents unallocated physical memory. MI code
441 * will use phys_avail[] to create the vm_page array.
443 phys_avail[0] = PAGE_SIZE +
444 KERNEL_KVA_SIZE / PAGE_SIZE * sizeof(vpte_t);
445 phys_avail[0] = (phys_avail[0] + PAGE_MASK) & ~(vm_paddr_t)PAGE_MASK;
446 phys_avail[1] = Maxmem_bytes;
449 * (virtual_start, virtual_end) represent unallocated kernel virtual
450 * memory. MI code will create kernel_map using these parameters.
452 virtual_start = KvaStart + PAGE_SIZE +
453 KERNEL_KVA_SIZE / PAGE_SIZE * sizeof(vpte_t);
454 virtual_start = (virtual_start + PAGE_MASK) & ~(vm_offset_t)PAGE_MASK;
455 virtual_end = KvaStart + KERNEL_KVA_SIZE;
458 * kernel_vm_end could be set to virtual_end but we want some
459 * indication of how much of the kernel_map we've used, so
460 * set it low and let pmap_growkernel increase it even though we
461 * don't need to create any new page table pages.
463 kernel_vm_end = virtual_start;
466 * Allocate space for process 0's UAREA.
468 proc0paddr = (void *)virtual_start;
469 for (i = 0; i < UPAGES; ++i) {
470 pmap_kenter_quick(virtual_start, phys_avail[0]);
471 virtual_start += PAGE_SIZE;
472 phys_avail[0] += PAGE_SIZE;
478 crashdumpmap = virtual_start;
479 virtual_start += MAXDUMPPGS * PAGE_SIZE;
482 * msgbufp maps the system message buffer
484 assert((MSGBUF_SIZE & PAGE_MASK) == 0);
485 msgbufp = (void *)virtual_start;
486 for (i = 0; i < (MSGBUF_SIZE >> PAGE_SHIFT); ++i) {
487 pmap_kenter_quick(virtual_start, phys_avail[0]);
488 virtual_start += PAGE_SIZE;
489 phys_avail[0] += PAGE_SIZE;
491 msgbufinit(msgbufp, MSGBUF_SIZE);
494 * used by kern_memio for /dev/mem access
496 ptvmmap = (caddr_t)virtual_start;
497 virtual_start += PAGE_SIZE;
500 * Bootstrap the kernel_pmap
506 * Map the per-cpu globaldata for cpu #0. Allocate the space using
507 * virtual_start and phys_avail[0]
511 init_globaldata(void)
518 * Reserve enough KVA to cover possible cpus. This is a considerable
519 * amount of KVA since the privatespace structure includes two
520 * whole page table mappings.
522 virtual_start = (virtual_start + SEG_MASK) & ~(vm_offset_t)SEG_MASK;
523 CPU_prvspace = (void *)virtual_start;
524 virtual_start += sizeof(struct privatespace) * SMP_MAXCPU;
527 * Allocate enough physical memory to cover the mdglobaldata
528 * portion of the space and the idle stack and map the pages
529 * into KVA. For cpu #0 only.
531 for (i = 0; i < sizeof(struct mdglobaldata); i += PAGE_SIZE) {
533 va = (vm_offset_t)&CPU_prvspace[0].mdglobaldata + i;
534 pmap_kenter_quick(va, pa);
535 phys_avail[0] += PAGE_SIZE;
537 for (i = 0; i < sizeof(CPU_prvspace[0].idlestack); i += PAGE_SIZE) {
539 va = (vm_offset_t)&CPU_prvspace[0].idlestack + i;
540 pmap_kenter_quick(va, pa);
541 phys_avail[0] += PAGE_SIZE;
545 * Setup the %gs for cpu #0. The mycpu macro works after this
548 tls_set_fs(&CPU_prvspace[0], sizeof(struct privatespace));
552 * Initialize very low level systems including thread0, proc0, etc.
558 struct mdglobaldata *gd;
560 gd = &CPU_prvspace[0].mdglobaldata;
561 bzero(gd, sizeof(*gd));
563 gd->mi.gd_curthread = &thread0;
564 thread0.td_gd = &gd->mi;
566 ncpus2 = 1; /* rounded down power of 2 */
567 ncpus_fit = 1; /* rounded up power of 2 */
568 /* ncpus2_mask and ncpus_fit_mask are 0 */
570 gd->mi.gd_prvspace = &CPU_prvspace[0];
571 mi_gdinit(&gd->mi, 0);
573 mi_proc0init(&gd->mi, proc0paddr);
574 lwp0.lwp_md.md_regs = &proc0_tf;
579 #if 0 /* #ifdef DDB */
581 if (boothowto & RB_KDB)
582 Debugger("Boot flags requested debugger");
585 initializecpu(); /* Initialize CPU registers */
587 init_param2((phys_avail[1] - phys_avail[0]) / PAGE_SIZE);
591 * Map the message buffer
593 for (off = 0; off < round_page(MSGBUF_SIZE); off += PAGE_SIZE)
594 pmap_kenter((vm_offset_t)msgbufp + off, avail_end + off);
595 msgbufinit(msgbufp, MSGBUF_SIZE);
598 thread0.td_pcb_cr3 ... MMU
599 lwp0.lwp_md.md_regs = &proc0_tf;
604 * Filesystem image paths for the virtual kernel are optional.
605 * If specified they each should point to a disk image,
606 * the first of which will become the root disk.
608 * The virtual kernel caches data from our 'disk' just like a normal kernel,
609 * so we do not really want the real kernel to cache the data too. Use
610 * O_DIRECT to remove the duplication.
614 init_disk(char *diskExp[], int diskFileNum, enum vkdisk_type type)
618 if (diskFileNum == 0)
621 for(i=0; i < diskFileNum; i++){
626 warnx("Invalid argument to '-r'");
630 if (DiskNum < VKDISK_MAX) {
632 struct vkdisk_info* info = NULL;
636 if (type == VKD_DISK)
637 fd = open(fname, O_RDWR|O_DIRECT|O_EXLOCK|O_NONBLOCK, 0644);
639 fd = open(fname, O_RDONLY|O_DIRECT, 0644);
640 if (fd < 0 || fstat(fd, &st) < 0) {
642 fprintf(stderr, "You may already have a vkernel using this disk image!\n");
643 err(1, "Unable to open/create %s", fname);
646 /* get rid of O_NONBLOCK, keep O_DIRECT */
647 if (type == VKD_DISK)
648 fcntl(fd, F_SETFL, O_DIRECT);
650 info = &DiskInfo[DiskNum];
656 memcpy(info->fname, fname, l);
660 rootdevnames[0] = "cd9660:vcd0a";
661 else if (type == VKD_DISK)
662 rootdevnames[0] = "ufs:vkd0s0a";
667 warnx("vkd%d (%s) > VKDISK_MAX", DiskNum, fname);
675 netif_set_tapflags(int tap_unit, int f, int s)
680 bzero(&ifr, sizeof(ifr));
682 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "tap%d", tap_unit);
683 if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0) {
684 warn("tap%d: ioctl(SIOCGIFFLAGS) failed", tap_unit);
691 * If the flags are already set/cleared, then we return
692 * immediately to avoid extra syscalls
694 flags = (ifr.ifr_flags & 0xffff) | (ifr.ifr_flagshigh << 16);
698 if ((flags & f) == 0)
709 * Fix up ifreq.ifr_name, since it may be trashed
710 * in previous ioctl(SIOCGIFFLAGS)
712 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "tap%d", tap_unit);
714 ifr.ifr_flags = flags & 0xffff;
715 ifr.ifr_flagshigh = flags >> 16;
716 if (ioctl(s, SIOCSIFFLAGS, &ifr) < 0) {
717 warn("tap%d: ioctl(SIOCSIFFLAGS) failed", tap_unit);
725 netif_set_tapaddr(int tap_unit, in_addr_t addr, in_addr_t mask, int s)
727 struct ifaliasreq ifra;
728 struct sockaddr_in *in;
730 bzero(&ifra, sizeof(ifra));
731 snprintf(ifra.ifra_name, sizeof(ifra.ifra_name), "tap%d", tap_unit);
734 in = (struct sockaddr_in *)&ifra.ifra_addr;
735 in->sin_family = AF_INET;
736 in->sin_len = sizeof(*in);
737 in->sin_addr.s_addr = addr;
741 in = (struct sockaddr_in *)&ifra.ifra_mask;
742 in->sin_len = sizeof(*in);
743 in->sin_addr.s_addr = mask;
746 if (ioctl(s, SIOCAIFADDR, &ifra) < 0) {
747 warn("tap%d: ioctl(SIOCAIFADDR) failed", tap_unit);
755 netif_add_tap2brg(int tap_unit, const char *ifbridge, int s)
760 bzero(&ifbr, sizeof(ifbr));
761 snprintf(ifbr.ifbr_ifsname, sizeof(ifbr.ifbr_ifsname),
764 bzero(&ifd, sizeof(ifd));
765 strlcpy(ifd.ifd_name, ifbridge, sizeof(ifd.ifd_name));
766 ifd.ifd_cmd = BRDGADD;
767 ifd.ifd_len = sizeof(ifbr);
768 ifd.ifd_data = &ifbr;
770 if (ioctl(s, SIOCSDRVSPEC, &ifd) < 0) {
772 * 'errno == EEXIST' means that the tap(4) is already
773 * a member of the bridge(4)
775 if (errno != EEXIST) {
776 warn("ioctl(%s, SIOCSDRVSPEC) failed", ifbridge);
783 #define TAPDEV_OFLAGS (O_RDWR | O_NONBLOCK)
785 /* XXX major()/minor() can't be used in vkernel */
786 #define TAPDEV_MAJOR(x) ((int)(((u_int)(x) >> 8) & 0xff))
787 #define TAPDEV_MINOR(x) ((int)((x) & 0xffff00ff))
789 #ifndef TAP_CDEV_MAJOR
790 #define TAP_CDEV_MAJOR 149
794 * Locate the first unused tap(4) device file if auto mode is requested,
795 * or open the user supplied device file, and bring up the corresponding
798 * NOTE: Only tap(4) device file is supported currently
802 netif_open_tap(const char *netif, int *tap_unit, int s)
804 char tap_dev[MAXPATHLEN];
810 if (strcmp(netif, "auto") == 0) {
814 * Find first unused tap(4) device file
817 snprintf(tap_dev, sizeof(tap_dev), "/dev/tap%d", i);
818 tap_fd = open(tap_dev, TAPDEV_OFLAGS);
819 if (tap_fd >= 0 || errno == ENOENT)
823 warnx("Unable to find a free tap(4)");
828 * User supplied tap(4) device file
830 if (netif[0] == '/') /* Absolute path */
831 strlcpy(tap_dev, netif, sizeof(tap_dev));
833 snprintf(tap_dev, sizeof(tap_dev), "/dev/%s", netif);
835 tap_fd = open(tap_dev, TAPDEV_OFLAGS);
837 warn("Unable to open %s", tap_dev);
843 * Check whether the device file is a tap(4)
846 if (fstat(tap_fd, &st) == 0 && S_ISCHR(st.st_mode) &&
847 TAPDEV_MAJOR(st.st_rdev) == TAP_CDEV_MAJOR) {
848 *tap_unit = TAPDEV_MINOR(st.st_rdev);
851 * Bring up the corresponding tap(4) interface
853 if (netif_set_tapflags(*tap_unit, IFF_UP, s) == 0)
856 warnx("%s is not a tap(4) device", tap_dev);
872 * Following syntax is supported,
873 * 1) x.x.x.x tap(4)'s address is x.x.x.x
875 * 2) x.x.x.x/z tap(4)'s address is x.x.x.x
876 * tap(4)'s netmask len is z
878 * 3) x.x.x.x:y.y.y.y tap(4)'s address is x.x.x.x
879 * pseudo netif's address is y.y.y.y
881 * 4) x.x.x.x:y.y.y.y/z tap(4)'s address is x.x.x.x
882 * pseudo netif's address is y.y.y.y
883 * tap(4) and pseudo netif's netmask len are z
885 * 5) bridgeX tap(4) will be added to bridgeX
887 * 6) bridgeX:y.y.y.y tap(4) will be added to bridgeX
888 * pseudo netif's address is y.y.y.y
890 * 7) bridgeX:y.y.y.y/z tap(4) will be added to bridgeX
891 * pseudo netif's address is y.y.y.y
892 * pseudo netif's netmask len is z
896 netif_init_tap(int tap_unit, in_addr_t *addr, in_addr_t *mask, int s)
898 in_addr_t tap_addr, netmask, netif_addr;
900 char *tok, *masklen_str, *ifbridge;
905 tok = strtok(NULL, ":/");
908 * Nothing special, simply use tap(4) as backend
913 if (inet_pton(AF_INET, tok, &tap_addr) > 0) {
915 * tap(4)'s address is supplied
920 * If there is next token, then it may be pseudo
921 * netif's address or netmask len for tap(4)
926 * Not tap(4)'s address, assume it as a bridge(4)
933 * If there is next token, then it must be pseudo
939 netmask = netif_addr = 0;
941 tok = strtok(NULL, ":/");
945 if (inet_pton(AF_INET, tok, &netif_addr) <= 0) {
946 if (next_netif_addr) {
947 warnx("Invalid pseudo netif address: %s", tok);
953 * Current token is not address, then it must be netmask len
958 * Current token is pseudo netif address, if there is next token
959 * it must be netmask len
961 masklen_str = strtok(NULL, "/");
964 /* Calculate netmask */
965 if (masklen_str != NULL) {
968 masklen = strtoul(masklen_str, NULL, 10);
969 if (masklen < 32 && masklen > 0) {
970 netmask = htonl(~((1LL << (32 - masklen)) - 1)
973 warnx("Invalid netmask len: %lu", masklen);
978 /* Make sure there is no more token left */
979 if (strtok(NULL, ":/") != NULL) {
980 warnx("Invalid argument to '-I'");
985 if (ifbridge == NULL) {
986 /* Set tap(4) address/netmask */
987 if (netif_set_tapaddr(tap_unit, tap_addr, netmask, s) < 0)
990 /* Tie tap(4) to bridge(4) */
991 if (netif_add_tap2brg(tap_unit, ifbridge, s) < 0)
1001 * NetifInfo[] will be filled for pseudo netif initialization.
1002 * NetifNum will be bumped to reflect the number of valid entries
1007 init_netif(char *netifExp[], int netifExpNum)
1011 if (netifExpNum == 0)
1014 s = socket(AF_INET, SOCK_DGRAM, 0); /* for ioctl(SIOC) */
1018 for (i = 0; i < netifExpNum; ++i) {
1019 struct vknetif_info *info;
1020 in_addr_t netif_addr, netif_mask;
1021 int tap_fd, tap_unit;
1024 netif = strtok(netifExp[i], ":");
1025 if (netif == NULL) {
1026 warnx("Invalid argument to '-I'");
1031 * Open tap(4) device file and bring up the
1032 * corresponding interface
1034 tap_fd = netif_open_tap(netif, &tap_unit, s);
1039 * Initialize tap(4) and get address/netmask
1042 * NB: Rest part of netifExp[i] is passed
1043 * to netif_init_tap() implicitly.
1045 if (netif_init_tap(tap_unit, &netif_addr, &netif_mask, s) < 0) {
1047 * NB: Closing tap(4) device file will bring
1048 * down the corresponding interface
1054 info = &NetifInfo[NetifNum];
1055 info->tap_fd = tap_fd;
1056 info->tap_unit = tap_unit;
1057 info->netif_addr = netif_addr;
1058 info->netif_mask = netif_mask;
1061 if (NetifNum >= VKNETIF_MAX) /* XXX will this happen? */
1074 if (pid_file != NULL) {
1076 fp = fopen(pid_file, "w");
1079 fprintf(fp, "%ld\n", (long)self);
1083 perror("Warning: couldn't open pidfile");
1092 if (pid_file != NULL) {
1093 if ( unlink(pid_file) != 0 )
1094 perror("Warning: couldn't remove pidfile");
1100 usage(const char *ctl, ...)
1105 vfprintf(stderr, ctl, va);
1107 fprintf(stderr, "\n");
1114 kprintf("cpu reset, rebooting vkernel\n");
1117 execv(save_av[0], save_av);
1123 kprintf("cpu halt, exiting vkernel\n");