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lwIP copy tx vs DMA

Question asked by tcmichals on Feb 19, 2018
Latest reply on Mar 19, 2018 by EricGregori

In file nifce_driver.c  function: low_level_output(struct netif* netif, struct pbuf* p) For the Blackfin,

The pbufs from lwip are copied into a TX buffer then sent to the Ethernet driver.  Is there a way to just loan the pb_bufs to the driver?  This would help in cases where sending a lot of traffic, instead of copying using the process, allow driver to use the buffer directly.