Re: [PATCH] cli()/sti() fix for drivers/net/depca.c

From: Francois Romieu (romieu@cogenit.fr)
Date: Wed Oct 02 2002 - 17:12:28 EST

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Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua> :
[...]
> Ho to do it properly? Make a copy on stack under lock, release lock,
> proceed with copy_to_user? That's 88 bytes at least...

Please see ETHTOOL_GSTATS usage in drivers/net/8139cp.c.

> > - on SMP, pktStat can be updated while the copy progresses, see depca_rx().
>
> Should I place these pktStat updates under lp->lock?

You may.

depca_rx() looks strange:
buf = skb_put(skb, len);
[...]
netif_rx(skb);
[...]
if (buf[0] & ...)

-- 
Ueimor
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