firewire network with fwip on 8.3.0-RELEASE-p1 - kernel panik

[xiv]

Hi all,

I am trying to get a secondary network connection over firewire 800 on the current stable version of FreeNAS (8.3.0-RELEASE-p1 x64). (The system has been stable since September 2012 and with the last update a week ago.)

Following http://www.unix.com/man-page/freebsd/4/FWIP/ I added a tunable for if_fwip_load="YES" to load the kernel module for fwip.

However, the required file /boot/kernel/if_fwip.ko could not be loaded because it is not part of the FreeNAS distribution.

I found the file in the corresponding FreeBSD distribution (FreeBSD-8.3-RELEASE-amd64-disc1.iso) and copied it to /boot/kernel/

After a reboot, the module was loaded as shown by kldstst:

Code:

Id Refs Address            Size     Name
 1   26 0xffffffff80100000 e26df8   kernel
 2    1 0xffffffff80f27000 7540     geom_gate.ko
 3    1 0xffffffff80f2f000 20d90    geom_mirror.ko
 4    1 0xffffffff80f50000 22830    geom_raid3.ko
 5    1 0xffffffff80f73000 8f08     geom_stripe.ko
 6    1 0xffffffff80f7c000 15ea8    fuse.ko
 7    1 0xffffffff80f92000 7e90     geom_multipath.ko
 8    1 0xffffffff80f9a000 79c0     if_fwip.ko
 9    1 0xffffffff81012000 132c28   zfs.ko
10    1 0xffffffff81145000 1fb4     opensolaris.ko

I sucessfully created a network interface fw0 with a static IP (10.0.0.1 / 255.255.255.0).
These are the relevant boot messages from dmesg:

Code:

fwohci0: <Texas Instruments TSB82AA2> mem 0xf7a04000-0xf7a047ff,0xf7a00000-0xf7a03fff irq 20 at device 1.0 on pci5
fwohci0: [ITHREAD]
fwohci0: OHCI version 1.10 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:13:3b:01:00:01:02:31
fwohci0: invalid speed 7 (fixed to 3).
fwohci0: Phy 1394a available S800, 3 ports.
fwohci0: Link S800, max_rec 4096 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwip0: <IP over FireWire> on firewire0
fwip0: Firewire address: 00:13:3b:01:00:01:02:31 @ 0xfffe00000000, S800, maxrec 4096
fwohci0: Initiate bus reset
fwohci0: fwohci_intr_core: BUS reset
fwohci0: fwohci_intr_core: node_id=0x00000000, SelfID Count=1, CYCLEMASTER mode
[...]
firewire0: 1 nodes, maxhop <= 0 cable IRM irm(0)  (me) 
firewire0: bus manager 0 
fwohci0: phy int

But when I connect the FreeNAS server to my Macbook Pro using a Firewire 800 cable, I always instantly get a kernel panic.
These are the last syslog messages:

Code:

freenas kernel: fwohci0: fwohci_intr_core: BUS reset
freenas kernel: fwohci0: fwohci_intr_core: node_id=0x00000001, SelfID Count=2, CYCLEMASTER mode
freenas kernel: firewire0: 2 nodes, maxhop <= 1 cable IRM irm(1)  (me) 
freenas kernel: firewire0: bus manager 1 
freenas kernel: fwohci0: fwohci_intr_core: BUS reset
freenas kernel: fwohci0: fwohci_intr_core: node_id=0x00000001, SelfID Count=3, CYCLEMASTER mode
freenas kernel: firewire0: 2 nodes, maxhop <= 1 cable IRM irm(1)  (me) 
freenas kernel: firewire0: bus manager 1 
freenas kernel: fwohci0: fwohci_intr_core: BUS reset
freenas kernel: fwohci0: fwohci_intr_core: node_id=0x00000001, SelfID Count=4, CYCLEMASTER mode
freenas kernel: firewire0: 2 nodes, maxhop <= 1 cable IRM irm(1)  (me) 
freenas kernel: firewire0: bus manager 1 
freenas kernel: firewire0: New S800 device ID:001b63fffe7c1162

Here's what the kernel panic looks like:

Code:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 02
fault virtual address   = 0x28
fault code                  = supervisor read data, page not present
[...]
current process	        = 0 (fw0_taskq)
[...]
Stopped at         	ip_fastforward+0x30: 	movq	0x28(%rax),%rax

That's were I'm stuck. Has anybody an idea that could help me solve this problem?
My bet is that the if_fwip.ko module is not fully okay. But if so, where would I find the right version?

Cheers,
xiv

 

[xiv]

Come on! Does nobody have any clue how to solve this? Has anybody even tried using fwip?

Cheers,
xiv

 

[tingo]

Firewire isn't very common these days. Perhaps nobody else but you are using Firewire as a network transport?

 

[cyberjock]

Firewire used to have some great uses, but these days its almost useless. The 800Mb/sec is slower than Gb LAN, Firewire allows for memory reading by devices which can pose serious security risks. I disable firewire on my machines in the BIOS because someone can use FW to gain control of your machine without even logging in.