linux-kernel - RE: Re: Re: Re: Re: [PATCH bpf v2] xsk: Fix out of order segment free in __xsk_generic

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Message-ID: <20250610093533eucms1p2874b3734a3663d8bcc277e2f7edea665@eucms1p2>
Date: Tue, 10 Jun 2025 11:35:33 +0200
From: Eryk Kubanski <e.kubanski@...tner.samsung.com>
To: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
CC: Stanislav Fomichev <stfomichev@...il.com>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "bjorn@...nel.org" <bjorn@...nel.org>,
	"magnus.karlsson@...el.com" <magnus.karlsson@...el.com>,
	"jonathan.lemon@...il.com" <jonathan.lemon@...il.com>
Subject: RE: Re: Re: Re: Re: [PATCH bpf v2] xsk: Fix out of order segment
 free in __xsk_generic_xmit()

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?