* skb_* function to get pointer to udp payload
@ 2012-08-07 13:42 Arif Hossain
2012-08-08 18:03 ` Jan Engelhardt
0 siblings, 1 reply; 2+ messages in thread
From: Arif Hossain @ 2012-08-07 13:42 UTC (permalink / raw)
To: netfilter-devel
Hi,
I need to get a pointer to udp payload in my xtables module in following
scenario:
1. From NF_INET_LOCAL_PREROUTING hook. As Transport headers are not yet
initialized, may be i need to play with offsets like
skb_header_pointer(skb, par->thoff,....). Not sure if its correct to use
skb_header_pointer this way though.
2. From NF_INET_LOCAL_OUT. This time as transport fields are already
initialized, i guess there is a direct function to get pointer to udp
payload.
Thanks in advance.
--
Cheers
aft
aftnix@gmail.com
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: skb_* function to get pointer to udp payload
2012-08-07 13:42 skb_* function to get pointer to udp payload Arif Hossain
@ 2012-08-08 18:03 ` Jan Engelhardt
0 siblings, 0 replies; 2+ messages in thread
From: Jan Engelhardt @ 2012-08-08 18:03 UTC (permalink / raw)
To: Arif Hossain; +Cc: netfilter-devel
On Tuesday 2012-08-07 15:42, Arif Hossain wrote:
>Hi,
>
>I need to get a pointer to udp payload in my xtables module in following
>scenario:
>
>1. From NF_INET_LOCAL_PREROUTING hook. As Transport headers are not yet
>initialized, may be i need to play with offsets like
>skb_header_pointer(skb, par->thoff,....). Not sure if its correct to use
>skb_header_pointer this way though.
It is correct to use skb_h_p in either chain.
^ permalink raw reply [flat|nested] 2+ messages in thread
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