[ofa-general] NetEffect, iw_nes and kernel warning

[Herbert Xu]

Roland Dreier <rdreier at cisco.com> wrote:
> 
> OK, thanks... what confused me is that several other drivers also do
> skb_linearize() in their hard_start_xmit method... eg bnx2x,
> via-velocity, mv643xx_eth.  So there are several other lurking bugs to
> deal with here I guess.

I don't know about the rest but bnx2x is certainly OK since it
only does so with IRQ enabled.  It is legal to call skb_linearize
as long as you're sure that IRQs are enabled, which is always the
case for hard_start_xmit upon entry.

So the only time you can't call it in hard_start_xmit is if you've
just disabled IRQs yourself.

Cheers,
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