[vbox-dev] [PATCH] FreeBSD: Add VIMAGE support to VBoxNetAdp

[Bernhard Froehlich]

Currently VBoxNetAdp does not support VIMAGE on FreeBSD hosts. If you
try to enable it you get a panic like this:

#0  doadump (textdump=-2022600704) at pcpu.h:244
#1  0x8051af69 in db_fncall (dummy1=1, dummy2=0, dummy3=-2127583648, 
dummy4=0xdcb61838 "")
     at /home/golub/freebsd/base/head/sys/ddb/db_command.c:573
#2  0x8051b361 in db_command (last_cmdp=0x811221fc, cmd_table=0x0, 
dopager=1)
     at /home/golub/freebsd/base/head/sys/ddb/db_command.c:449
#3  0x8051b4ba in db_command_loop () at 
/home/golub/freebsd/base/head/sys/ddb/db_command.c:502
#4  0x8051d4ad in db_trap (type=12, code=0)
     at /home/golub/freebsd/base/head/sys/ddb/db_main.c:229
#5  0x80a81d96 in kdb_trap (type=12, code=0, tf=0xdcb61ad4)
     at /home/golub/freebsd/base/head/sys/kern/subr_kdb.c:629
#6  0x80dd22af in trap_fatal (frame=0xdcb61ad4, eva=24)
     at /home/golub/freebsd/base/head/sys/i386/i386/trap.c:1014
#7  0x80dd2387 in trap_pfault (frame=0xdcb61ad4, usermode=0, eva=24)
     at /home/golub/freebsd/base/head/sys/i386/i386/trap.c:835
#8  0x80dd3451 in trap (frame=0xdcb61ad4)
     at /home/golub/freebsd/base/head/sys/i386/i386/trap.c:547
#9  0x80dbccac in calltrap () at 
/home/golub/freebsd/base/head/sys/i386/i386/exception.s:169
#10 0x80b0633e in ifindex_alloc_locked (idxp=0xdcb61b56)
     at /home/golub/freebsd/base/head/sys/net/if.c:279
#11 0x80b09172 in if_alloc (type=6 '\006') at 
/home/golub/freebsd/base/head/sys/net/if.c:435
#12 0x8b01e8e7 in vboxNetAdpOsCreate () from 
/boot/modules/vboxnetadp.ko
#13 0x8b01ef00 in vboxNetAdpCreate () from /boot/modules/vboxnetadp.ko
#14 0x8b01ecd8 in VBoxNetAdpFreeBSDCtrlioctl () from 
/boot/modules/vboxnetadp.ko
#15 0x8095c6bb in devfs_ioctl_f (fp=0x8b6f8118, com=3223352833, 
data=0x8b022360,
     cred=0x87759b00, td=0x89fdf2e0)
     at /home/golub/freebsd/base/head/sys/fs/devfs/devfs_vnops.c:757
#16 0x80a9b4ed in kern_ioctl (td=0x89fdf2e0, fd=3, com=3223352833, 
data=0x8b022360 "vboxnet0")
     at file.h:287
#17 0x80a9b674 in sys_ioctl (td=0x89fdf2e0, uap=0xdcb61cec)
     at /home/golub/freebsd/base/head/sys/kern/sys_generic.c:691
#18 0x80dd29ae in syscall (frame=0xdcb61d28) at subr_syscall.c:135


The attached patch adds support for VIMAGE to VBoxNetAdp and thus
also fixes that panic.

The Author agrees that the patch is under MIT License.

Author: Mikolaj Golub <trociny at freebsd.org>
Reference: 
http://lists.freebsd.org/pipermail/freebsd-emulation/2012-April/009646.html

-- 
Bernhard Fröhlich
http://www.bluelife.at/
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