On 9/5/25 10:33 AM, Amery Hung wrote:
An unused argument, flags is reserved for future extension (e.g., tossing the data instead of copying it to the linear data area).
+__bpf_kfunc int bpf_xdp_pull_data(struct xdp_md *x, u32 len, u64 flags)
I was thinking the flag may be needed to avoid copy. I think we have recently concluded that bpf_xdp_adjust_head can support shrink on multi buf also. If it is the case, it is probably better to keep a similar api as the bpf_skb_pull_data which does not have the flags argument.
