netdev - Re: [PATCH bpf-next v7 0/8] Add kfunc bpf_xdp_pull

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Message-ID: <87568a0b-93c8-4fc1-a721-dbfeda01d0bb@linux.dev>
Date: Tue, 23 Sep 2025 18:41:40 -0700
From: Martin KaFai Lau <martin.lau@...ux.dev>
To: Amery Hung <ameryhung@...il.com>
Cc: bpf@...r.kernel.org, netdev@...r.kernel.org,
 alexei.starovoitov@...il.com, andrii@...nel.org, daniel@...earbox.net,
 paul.chaignon@...il.com, kuba@...nel.org, stfomichev@...il.com,
 martin.lau@...nel.org, mohsin.bashr@...il.com, noren@...dia.com,
 dtatulea@...dia.com, saeedm@...dia.com, tariqt@...dia.com,
 mbloch@...dia.com, maciej.fijalkowski@...el.com, kernel-team@...a.com
Subject: Re: [PATCH bpf-next v7 0/8] Add kfunc bpf_xdp_pull_data

On 9/22/25 4:33 PM, Amery Hung wrote:
>    bpf: Clear pfmemalloc flag when freeing all fragments
>    bpf: Allow bpf_xdp_shrink_data to shrink a frag from head and tail
>    bpf: Support pulling non-linear xdp data
>    bpf: Clear packet pointers after changing packet data in kfuncs

Please follow up with a selftest for this change. For global func, there is an 
example in commit 3f23ee5590d9.

>    bpf: Make variables in bpf_prog_test_run_xdp less confusing

This makes the code easier to reason. Thanks. Applied.

>    bpf: Support specifying linear xdp packet data size for
>      BPF_PROG_TEST_RUN
>    selftests/bpf: Test bpf_xdp_pull_data
>    selftests: drv-net: Pull data before parsing headers