Hi Tim, On 9/5/25 19:45, Tim Harvey wrote: > Hi Jerome, > > I'm working with a board that has an IMX ENETC MAC on it > drivers/net/fsl_enetc.c and when configured for LWIP it fails and > warns about RX buffers not being 64B aligned: > WARNING at drivers/net/fsl_enetc.c:776/enetc_setup_rx_bdr()! > > I tried changing MEM_ALIGNMENT to 64 in lib/lwip/u-boot/lwipopts.h but > that did not align the buffers to 64B. Where are the lwip buffers > created and do you have any suggestions for working around this?
The LwIP RX buffers are created in net-lwip.c. See eth_init_rings(). You might have PKTSIZE_ALIGN and/or PKTALIGN set wrongly. Regards, -- Jerome > > Best Regards, > > Tim
