cpu localize dummynet(4) stage 1

[Sepherosa Ziehau]

Hi all,

Following patch is the first step to cpu-localize dummynet(4); this
patch also completely decouples dummynet(4) and ipfw(4):
http://leaf.dragonflybsd.org/~sephe/dummynet_cpu0.diff

Please review it.

I want to put various dummynet(4) related bits in netinet/ip_input.c
into net/dummynet/ip_dummynet_glue.c, which will be marked as
"standard" in conf/files.  Any suggestions?

Best Regards,
sephe

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