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SubjectRe: Longstanding networking / SMP issue? (duplextest)
On Thu, Feb 20, 2003 at 01:20:43AM -0800, Simon Kirby wrote:
> On Thu, Feb 20, 2003 at 08:52:46AM +0100, Andi Kleen wrote:
>
> > That's probably because of the lazy ICMP socket locking used for the
> > ICMP socket. When an ICMP is already in process the next ICMP triggered
> > from a softirq (e.g. ECHO-REQUEST) is dropped
> > (see net/ipv4/icmp_xmit_lock_bh())
>
> Hmm...and this is considered desired behavior? It seems like an odd way
> of handling packets intended to test latency and reliability. :)

IP is best-effort. Dropping packets in odd cases to make locking simpler
is not unreasonable. Would you prefer an slower kernel?

-Andi

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