That's correct when you have the ethernet header. I don't have it, so I
inject it into the stack to fill
up all the routing information needed , mainly detination mac address.
Chava
----- Original Message -----
From: "Gilboa Davara" <[EMAIL PROTECTED]>
To: "IL Linux" <linux-il@linux.org.il>
Sent: Thursday, October 05, 2006 5:45 PM
Subject: Re: netif_rx and dev stack
On Thu, 2006-10-05 at 16:02 +0200, Chava Leviatan wrote:
Hello,
I have a 2.4.18 machine with 2 ethernet interfaces.
I am trying to simulate a scenario where packet has just arrived from
one interface and going to the other.
I have build a kernel module that runs a kernel thread. That kernel
thread is invoked every second, and then
it does the following ;
- alloc_skb
- Fill the proper sk_buff fields
- Fill IP header fields
- Fill ICMP header fields
- skb_put with the data length
- call to netif_rx
I am able to see the packets with ethreal (on the correct interface).
I have also put some debug prints into the
kernel code (dev.c) and I am able to see those packets getting into
__kfree_skb.
However, when i do the rmmod the machine crashes , i.e., performs a
reset !!
When I remove the netif_rx the rmmod returns ok.
Can anyone please explain why does it crash ??
Any help is apreciated,
Thanks,
Chava
If my memory serves me right, you should use dev_queue_xmit to send the
SKB, instead of calling netif_rx directly.
- Gilboa.
P.S. Posting in HTML is considered bad netiquette in MLs.
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