Hello,
I am also working on implemenring my own 8 byte header after IP
header. To access header values did you check skb pointers at
transport layes? Are you have taken into consideration about pointers
require to move 8 bytes towards payload when you try to access udp
header values after adding own 8 byte header?
regards,
cranium
On Thu, 10 Feb 2005 06:24:00 +0530 (IST), durgam@xxxxxxxxxxxxx
<durgam@xxxxxxxxxxxxx> wrote:
> i am implementing a virtual network device driver. I added my own header
> of 8 bytes after ip header. Then I am accessing udp header values source
> and dest(both ports). I used spinlock before accessing these two values(to
> avoid conccurent access to kerenl). But it is not receiving proper udp
> header ports. some times it is giving correct values and some times it is
> giving random values. Is there any way to access the header value?
>
> The following code i am using to access the code.
>
> spin_lock(&udp_lock)
> uh=skb->h.uh;
> sport=uh->source;
> dport=uh->dest;
> spin_lock(&udp_lock)
>
> thanks in advance
> phani
>
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