[lwip-devel] [bug #34427] In RAW/NO_SYS mode, tcp_output may send out large number of ARQ REQ if destination ARP entry has expired

[Amir Shalem]

Follow-up Comment #5, bug #34427 (project lwip):

I'm attaching a patch for this bug,
I fix two bugs in ARP layer:

* re-sending arp requests, every 1second, until entry is stable or purge out
(ARP_MAXPENDING)
   arp requests are sent only when there's a new timer, or on etharp_tmr

* maximum packets in queue, up to 3 packets, until entry is stable
   in case someone is sending lots of packets without the entry resolved,
   makes sure we don't run out of MEMP_ARP_QUEUE for sending packets to other
IPs.

patch included.

(file #24184)
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Additional Item Attachment:

File name: arp-queuing.patch              Size:6 KB


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