Re: How to get Ethernet data from Socket buffer.

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Hi 
	Thanks for your support, Yeah, my modules hook on NF_IP_POST_ROUTING
and NF_IP_PRE_ROUTING. my computer hang, my meaning is my computer
completely stop working :(.

Nhanle
On Mon, 2005-12-12 at 03:53, Parag N wrote:
> Hi,
>      Can you tell in which hook you are copying data? You can only do
> this at NF_IP_PRE_ROUTING or NF_IP_POST_ROUTING. you said your
> computer hang that mean you got oops message right?
> regards,
> Parag.
> 
> On 10 Dec 2005 15:55:09 -0500, Nhan Thanh Le <ltnhan@xxxxxxxxxx>
> wrote:
>         Hi All,
>         
>           My kernel module get data socket buffer from Netfilter, When
>         I try to
>         copy data from socket buffer filed skb->mac.raw or
>         skb->mac.ethernet to
>         my ethernet data then my computer will be hang on. Would you
>         please show 
>         me how to fix this? Or please help me to how fill my ethernet
>         header
>         when I get data from socket buffer. Thank you very much and
>         appreciate
>         for help.
>         
>         Both function bellow is not work properly.
>         
>         inline static int build_ethernet(const struct sk_buff *skb,
>         struct 
>         ethhdr vs_hdr)
>         {
>           struct ethhdr *eth_header;
>           eth_header=(struct ethhdr *)skb->mac.raw;
>           if (eth_header == NULL)
>             return -1;
>           memcpy(&vs_hdr,skb->mac.raw,sizeof(struct ethhdr));
>         
>           return 0;
>         }
>         
>         inline static int build_ethernet(const struct sk_buff
>         *skb,  struct
>         ethhdr vs_hdr)
>         {
>           struct ethhdr *eth_header;
>           eth_header=skb->mac.ethernet;
>           if (eth_header == NULL)
>             return -1; 
>           memcpy(&vs_hdr,skb->mac.ethernet,sizeof(struct ethhdr));
>         
>           return 0;
>         }
>         
>         Nhanle
>         
>         
>         --
>         Kernelnewbies: Help each other learn about the Linux kernel.
>         Archive:       http://mail.nl.linux.org/kernelnewbies/
>         FAQ:           http://kernelnewbies.org/faq/
>         
> 


--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
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