Hi all: There has been some discussions about adding checksum hint in AF_XDP such as this thread[1]. Now, we also plan to add checksum hint. My questions are: 1. In this msg[2], is it appropriate if xdp_csum_status only includes 4 enums/macros(CHECKSUM_NONE...CHECKSUM_PARTIAL in skbuff.h)? Thus it becomes more generic. Also, in this msg[3] we can simply pass skb->ip_summed to csum_status in veth_xdp_rx_csum(). 2. What should be taken care of if I want to add a new hint? IOW, what is acceptable to add a new hint? Thanks! [1] https://lore.kernel.org/bpf/CAADnVQJPgpo7J0qVTQJYYocZ=Jnw=O5GfN2=PyAQ55+WWG_DVg@xxxxxxxxxxxxxx/ [2] https://lore.kernel.org/bpf/20230728173923.1318596-13-larysa.zaremba@xxxxxxxxx/ [3] https://lore.kernel.org/bpf/20230728173923.1318596-18-larysa.zaremba@xxxxxxxxx/
