On 25/08/2025 22:39, Amery Hung wrote: > Move skb_frag_t adjustment into bpf_xdp_shrink_data() and extend its > functionality to be able to shrink an xdp fragment from both head and > tail. In a later patch, bpf_xdp_pull_data() will reuse it to shrink an > xdp fragment from head. I had assumed that XDP multi-buffer frags must always be the same size, except for the last one. If that’s the case, shrinking from the head seems to break this rule.
