> -----Original Message-----
> From: Stanislav Fomichev <stfomichev@xxxxxxxxx>
> Sent: Thursday, February 20, 2025 11:17 PM
> To: Vyavahare, Tushar <tushar.vyavahare@xxxxxxxxx>
> Cc: bpf@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; bjorn@xxxxxxxxxx; Karlsson,
> Magnus <magnus.karlsson@xxxxxxxxx>; Fijalkowski, Maciej
> <maciej.fijalkowski@xxxxxxxxx>; jonathan.lemon@xxxxxxxxx;
> davem@xxxxxxxxxxxxx; kuba@xxxxxxxxxx; pabeni@xxxxxxxxxx; ast@xxxxxxxxxx;
> daniel@xxxxxxxxxxxxx
> Subject: Re: [PATCH bpf-next 2/6] selftests/xsk: Add tail adjustment functionality
> to XDP
>
> On 02/20, Tushar Vyavahare wrote:
> > Introduce a new function, xsk_xdp_adjust_tail, within the XDP program
> > to adjust the tail of packets. This function utilizes
> > bpf_xdp_adjust_tail to modify the packet size dynamically based on the 'count'
> variable.
> >
> > If the adjustment fails, the packet is dropped using XDP_DROP to
> > ensure processing of only correctly modified packets.
> >
> > Signed-off-by: Tushar Vyavahare <tushar.vyavahare@xxxxxxxxx>
>
> Any reason not to combine patches 2..5 into a single one? I looked through each
> one briefly and it's a bit hard to follow when trying to put everything together..
Maybe that was too many patches. How about this?
#1: selftests/xsk: Add packet stream replacement function
#2: selftests/xsk: Add tail adjustment test functionality to AF_XDP.
#3: selftests/xsk: Add support check for bpf_xdp_adjust_tail() helper in
xskxceiver
#4: selftests/xsk: Implement and test packet resizing with
bpf_xdp_adjust_tail
