Re: [lwip-users] "pack dropped, no space" after 7 hrs and 35 min

[Patrick Klos]

On 8/7/2019 3:04 AM, santosh_ts via lwip-users wrote:

Hello all,

Can anyone help me on this topic ?

Here's a guess based on what you've shared:

You previously said:

At what rate are you attempting to send these UDP packets?  
>I tried to send packets with 10 ms duration and 100ms duration, in both
cases it stopped transmitting after 7 hrs 35 min.

That implies that you sent about 2,730,000 (at 10ms) or 273,000 (at 100ms) packets.  That suggests it's not a buffering issue.

You said your platform is a Zynq eval board?  That suggests you have an FPGA component in your solution, which also suggests you're using some IP libraries.  What are the chances you're using a "demo" version of some IP library that has a "time limit" built into it that shuts the IP off at 7 hours and 35 minutes??  Just a thought... it happens...  Does it stop if you send only 1 packet per second?  Or 1 packet every few seconds??  If it always stops at 7 hours and 35 minutes, that's a pretty significant clue.

Patrick Klos
Klos Technologies, Inc.