netdev - Re: [RFC Patch net-next] ipv6: look up neighbours on demand in ip6_finish

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Message-Id: <20130114.133004.19237632940616685.davem@davemloft.net>
Date:	Mon, 14 Jan 2013 13:30:04 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	xiyou.wangcong@...il.com
Cc:	netdev@...r.kernel.org, roland@...estorage.com
Subject: Re: [RFC Patch net-next] ipv6: look up neighbours on demand in
 ip6_finish_output2()

This is a very incomplete patch.

If this change were so simple, it would have been done by someone
else a long time ago.

You must, in addition to the incredibly obvious changes in the packet
output path, completely eliminate the caching of the neighbour entry
in the ipv6 routes themselves.

This means replacing every rt6->n access or test with something
equivalent.
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