Hi,
I'm developing a bridge application (Ethernet <--> wireless) for both AP
and Station.
I would like to keep a single kernel image for both AP and station.
However the netfilter capabilities (conntrack) are only required at the
Station.
I have configured the required netfilter capabilities to be loaded as
modules. still there are some basic configurations i can't set as
modules but only as built-ins.
So even-though i don't really need the netfilter in the AP these basic
configuration exists and causes performance issue for network traffic
(15% desegregation).
After a brief debug session i found out that when running the system
without netfilter the packet (travailing : Eth-->Bridge-->Wireless) is
passed with the same skb (all the way), while when netfilter is on the
packet has a different skb while in Eth driver then the skb in the
wireless driver. I suspect the skb switch/copy has happened in the
bridge code.
1. Is there a way to maintain a single kernel image without hurting the
performance so bad?
2. Why is the packet copied from one skb to another?
Regards,
Raviv
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