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authorEric Dumazet <edumazet@google.com>2012-10-05 08:23:55 +0200
committerDavid S. Miller <davem@davemloft.net>2012-10-07 06:40:54 +0200
commitacb600def2110b1310466c0e485c0d26299898ae (patch)
tree21036c7d0518601aba70dde0246ac229cd8dfc0c /drivers/net/ethernet/dec
parentinfiniband: pass rdma_cm module to netlink_dump_start (diff)
downloadlinux-acb600def2110b1310466c0e485c0d26299898ae.tar.xz
linux-acb600def2110b1310466c0e485c0d26299898ae.zip
net: remove skb recycling
Over time, skb recycling infrastructure got litle interest and many bugs. Generic rx path skb allocation is now using page fragments for efficient GRO / TCP coalescing, and recyling a tx skb for rx path is not worth the pain. Last identified bug is that fat skbs can be recycled and it can endup using high order pages after few iterations. With help from Maxime Bizon, who pointed out that commit 87151b8689d (net: allow pskb_expand_head() to get maximum tailroom) introduced this regression for recycled skbs. Instead of fixing this bug, lets remove skb recycling. Drivers wanting really hot skbs should use build_skb() anyway, to allocate/populate sk_buff right before netif_receive_skb() Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/dec')
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