Michele 'mydecay' Marchetto wrote:
hi all.
i have noticed that in list_for_each_entry_rcu the checks
(!ptype->dev || ptype->dev == skb->dev) are made on the current
packet but the function (delived_skb) is called on the previous one.
i can't understand why this make sense.. anyone can explain me?
I've seen that idiom used elsewhere in the kernel...
look down further after the loop, I'll bet the last
one found is used later. ... yup. See
http://lxr.linux.no/source/net/core/dev.c?v=2.6.0-test7#L1534
pt_prev is referenced after the loop.
Took me a while to see it the first time, too.
- Dan
--
Dan Kegel
http://www.kegel.com
http://counter.li.org/cgi-bin/runscript/display-person.cgi?user=78045
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