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Re: [lwip-users] Relationship between lwIP options

From: Alexandre Malo
Subject: Re: [lwip-users] Relationship between lwIP options
Date: Tue, 4 Aug 2009 08:31:26 -0400

Should we create a new pool for SNMP response and trap?


----- Original Message ----- 
From: "Simon Goldschmidt" <address@hidden>
To: "Mailing list for lwIP users" <address@hidden>
Sent: Tuesday, August 04, 2009 1:23 AM
Subject: Re: [lwip-users] Relationship between lwIP options

> > If you say PBUF pool is only for incoming packet, then lwip SNMP driver
> > in Fault.
> I know, there's some 'room for improvement' in the snmp code... In any
case it's a bad example and the pbuf pool really should only be used for
incoming packets right now.
> The reason is that *if* outgoing packets would empty the pbuf pool, there
would be no pbufs left for incoming packets and the stack might stall (e.g.
incoming packets would be needed to free outgoing TCP packet that are queued
for ACK).
> Simon
> -- 
> GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
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