> On Tue, 03 Jan 2023 16:19:49 +0100 Toke Høiland-Jørgensen wrote: > > Hmm, good question! I don't think we've ever explicitly documented any > > assumptions one way or the other. My own mental model has certainly > > always assumed the first frag would continue to be the same size as in > > non-multi-buf packets. > > Interesting! :) My mental model was closer to GRO by frags > so the linear part would have no data, just headers. That is assumption as well. Regards, Lorenzo > > A random datapoint is that bpf_xdp_adjust_head() seems > to enforce that there is at least ETH_HLEN.
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