there is not buffer for outgoing pckets in LwIP, I
think. LwIP "send" function only store
packet data to MACB DMA buffer "pcTxBuffer" (file "macb.c", function
"lMACBSend") - if there is free descriptor "xTxDescriptors", in other
case function waiting for release - and then return. Transmitting process
to ethernet line is asynchronous and is controlled by MACB unit & DMA
in AVR32 and depend on type of connected ethernet devices (hub / switch, half
duplex / full duplex, ...)
----- Original Message -----
Sent: Friday, April 23, 2010 1:47
Subject: [lwip-users] Function send
I´m using EVK1100 with FreeRTOS and
lwip, and i would like to know this question.
When i called the
send function, is the packet sent to the ethernet line or this is queued and
the return say me only that situation?
It´s importan for me to measure
the time to proccess the send functions.
Thank you in
"En la vida hay tres cosas
que nunca dan marcha atras, la palabra pronunciada, la flecha lanzada y la