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R: [lwip-users] Returning ERR_MEM from low_level_output()?
From: |
Ceresoli Luca |
Subject: |
R: [lwip-users] Returning ERR_MEM from low_level_output()? |
Date: |
Fri, 18 Apr 2008 11:47:58 +0200 |
Simon wrote:
> netif->linkoutput is called e.g. from udp_output (which calls
> ip_output_*, which calls netif->output/etharp_output which calls
> netif->linkoutput)
Thanks Simon.
So, at least in UDP raw mode, the return value of low_level_output() climbs up
to the original call (e.g. udp_send()).
(forward-tracking was much easier than backtracking!)
And the @note actually means: "Try your best to enqueue the packet. If you
_really_ can't, return ERR_MEM."...
Correct?
Luca