Hi, I have a 64bit system, RHEL 4.5.
I can get more details if needed.
It has the modular ip_queue, netfilter headers, bridge
control package and the like.
For my queue program, I had to get the source for
1.2.11 (the version indicated in the rpm).
I compiled the sample QUEUE from the manpages.
The 2 differences:
1. I printf the indev and outdev
2. my verdict returns the payload (m->data_len,
m->payload) from the ipq_get_packet()) as in the end I
want to mangle the packet (but do not in this example)
I added the hooks:
iptables -t mangle -A PREROUTING -i br0 -j QUEUE
iptables -t mangle -A POSTROUTING -o br0 -j QUEUE
I make my br0 bridge from eth0 to eth1.
I modprobe the ip_queue.
So I have the section:
case IPQM_PACKET:
ipq_packet_msg_t *m=ipq_get_packet(buf);
status=ipq_set_verdict(h,m->packet_id,NF_ACCEPT,m->data_len,
m->payload);
I get the expected stream of messages from the test
app but it will, invariably and relatively fast, cause
the system to lock up completely, keyboard LEDs
flashing.
I did go in and remove the payload return (0,NULL) and
it actually seems to be running just fine, a concern
since I need to alter the payload data in the end.
Does anyone have thoughts as to why I panic when
returning the same payload?
-Scott
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