Hi Daren;
this is the information from the panic trace when calling
net_inject(netdata, NI_DIRECT_OUT,...)
without cloning and without deep copy , and when returning 1 after
net_inject() ,
I get the following crash: packet->mp->b_next == 0L.
I see it in the kernel logs and I made 3 trials.
The info from ::msgbuf and ::panicinfo is this:
::msgbuf
=========
panic[cpu0]/thread=fffffe80000b9c80:
assertion failed: packet->mp->b_next == 0L, file:
../../common/io/e1000g/e1000g_tx.c, line: 972
fffffe80000b9b20 genunix:assfail+83 ()
fffffe80000b9ba0 e1000g:e1000g_recycle+37c ()
fffffe80000b9bf0 e1000g:e1000g_intr+1e8 ()
fffffe80000b9c60 unix:av_dispatch_autovect+97 ()
fffffe80000b9c70 unix:intr_thread+50 ()
syncing file systems...
done
dumping to /dev/dsk/c1d0s1, offset 125042688, content: kernel
===
> ::panicinfo
cpu 0
thread fffffe80000b9c80
message
assertion failed: packet->mp->b_next == 0L, file:
../../common/io/e1000g/e1000g_tx.c, line: 972
rdi fffffffffbb7c870
rsi fffffe80000b9aa8
rdx fffffffff40538f8
rcx 3cc
r8 fffffe80000b9ae0
r9 ffffffff8fac1100
rax 0
rbx 3cc
rbp fffffe80000b9ad0
r10 fffffe80000b99f0
r10 fffffe80000b99f0
r11 5d00
r12 fffffffff40538f8
r13 fffffffff4053920
r14 ffffffff85c73280
r15 0
fsbase ffffffff80000000
gsbase fffffffffbc27b90
ds 43
es 43
fs 0
gs 1c3
trapno 0
err 0
rip fffffffffb83cba0
cs 28
rflags 246
rsp fffffe80000b99e8
ss 30
gdt_hi 0
gdt_lo defacedd
idt_hi 0
idt_lo 83700fff
ldt 0
task 60
cr0 8005003b
cr2 fffffd7fff2f1000
cr3 11652000
Regards
Diego B
Diego B wrote:
Hi;
Thanks again.
I will try to reproduce the panic to send more info.
Another question.
I saw b50 yesterday but without the packet filter code. I was told
here in SUN Isreal that b50
will include the packet filter hook code.
There is any new ipfhook code comming for b50? I saw also in a blog that
ipfhook will be part of the Solaris 10 3 beta ( 11/06 beta ), is this
correct ?
Thanks
Diego B
Darren Reed wrote:
Diego B wrote:
Hi Darren
Pls see inline.
Thanks for your help.
Darren Reed wrote:
Diego B wrote:
Hi;
We are implementing a module based on the early packet filtering
hooks API.
This module is ported from the netfilter Linux API.
Now my question;
We are trying to put packets on the net as soon as we got them and
change some parameters to the IP and UDP
headers.
So we catch them in the pre-routing hook (PHYSCAL_IN), change some
fields
and we want to put it on the wire ASAP.
My question is: What is the bes way to do that ?
We tried doing net_inject(DIRECT) with the modified packet but the
system panic all the time.
Can I get any sample code on how to use net_inject ? It is full
implemented ?
Or doing net_inject(DIRECT) is not the best way ?
How do you want the system to treat the packet?
If you know the exact interface to send it out and you do not want
to see it again with PHYSICAL_OUT, then you can use DIRECT.
Yes, that is exactly what I want. The packet has to go out from the
same interface it comes in.
I actually change the source IP address, the Dst IP address, the
source UDP port and the dst UDP port.
And want the packet to go out. There is any extra field I have to
add/change in order to send this packet ?
If you are just swapping fields around, there should be no need to
change anything.
And nothing you are doing, by changing the packet in this way, should
make a panic.
Do I need to set any routing parameters ? checksums or others ?
I don't believe you need to do any of these.
Do I need to clone ( make a deep copy ) the packet I got as
parameter of the hook
to send in net_inject?
No.
Or I can just modify it an send it in net_inject ?
That is the intention, yes.
Darren
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