Possibly related (same subject, not in this thread)

• 2025-06-11 · Re: Re: Re: Re: Re: [PATCH bpf v2] xsk: Fix out of order segment free in __xsk_generic_xmit() · Maciej Fijalkowski <maciej.fijalkowski@intel.com>
• 2025-06-10 · RE: Re: Re: Re: Re: [PATCH bpf v2] xsk: Fix out of order segment free in __xsk_generic_xmit() · Eryk Kubanski <hidden>

xsk_build_skb() doesn't seem to handle
zerocopy case in that situation.
(IFF_TX_SKB_NO_LINEAR device flag)

How to return descriptors back after
building skb in zerocopy mode?
How does it work in this situation?