Messages in this thread | | | From | Vitaly Kuznetsov <> | Subject | Re: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V | Date | Thu, 17 Sep 2015 11:03:25 +0200 |
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David Miller <davem@davemloft.net> writes:
> From: David Laight <David.Laight@ACULAB.COM> > Date: Wed, 16 Sep 2015 16:25:03 +0000 > >> Am I right in thinking this is adding an extra 96 unused bytes to the front >> of almost all skb just so that hyper-v can make its link level header >> contiguous with whatever follows (IP header ?). >> >> Doesn't sound ideal. > > Agreed, this is rediculous, and the entire stack will incur this cost > just because hyperv is enabled in the kernel config.
That's what 'RFC' in the subject was about :-)
We already have a precedent of increasing LL_MAX_HEADER globaly because of a config option (CONFIG_MAC80211_MESH) but Hyper-V needs more.
-- Vitaly
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