On Friday 2008-11-21 03:17, 赵磊 wrote:
>Hi,
>
>I register a NF_IP_PRE_ROUTING hook that check the incoming packets. I’m
>trying to return NF_STOLEN on particular TCP packets and later pass them
>to the TCP module of the kernel. Any advice about how this can be achieved?
PREROUTING is invoked from here:
net/ipv4/ip_input.c:
return NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING, skb, dev, NULL,
ip_rcv_finish);
or here, net/ipv6/ip6_input.c:
return NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING, skb, dev, NULL,
ip6_rcv_finish);
(or whichever other protocol you use)
So you just call the appropriate functions (ip{,6}_rcv_finish).
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