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authorAnton Blanchard <anton@samba.org>2006-03-31 02:27:06 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-31 02:27:06 -0800
commit025be81e83043f20538dcced1e12c5f8d152fbdb (patch)
treeb5789ee2931739c7066f5369ce699ef4f3fa758e /net
parent0803dbed7a23721d091639c9e173c0389dcd524a (diff)
downloadop-kernel-dev-025be81e83043f20538dcced1e12c5f8d152fbdb.zip
op-kernel-dev-025be81e83043f20538dcced1e12c5f8d152fbdb.tar.gz
[NET]: Allow skb headroom to be overridden
Previously we added NET_IP_ALIGN so an architecture can override the padding done to align headers. The next step is to allow the skb headroom to be overridden. We currently always reserve 16 bytes to grow into, meaning all DMAs start 16 bytes into a cacheline. On ppc64 we really want DMA writes to start on a cacheline boundary, so we increase that headroom to one cacheline. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
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