xiaoxiang781216 commented on PR #20576: URL: https://github.com/apache/nuttx/pull/20576#issuecomment-6099375323
> The copy in each direction is unavoidable here: the IOB buffers are not DMA aligned and the descriptors need buffers in the KSEG0/KSEG1 window of g_buffers. @zhhyu7 improve network stack recently which allow: 1. wrap the external buffer with the iob header 2. try to allocate iob from driver before sending 3. call xxx_input by wrapping the internal buffer in driver this improvement could hlep the driver writer to avoid memory copy as much as possible. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
