On 02/25, Vyavahare, Tushar wrote: > > > > -----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 Even that might be too much. #1 is clearly refactoring - keep it separate. The rest seems like it belongs to the same testcase(s)? I'd put patches 2,3,4,5,6 in the same patch. For example, you add bpf xsk_xdp_adjust_tail function, but there are not callers in the same patch, so it's not clear what's the context. Same for testapp_xdp_adjust_tail - there is no caller, so the reader needs to go to the next patch to put it all together. Same for testapp_adjust_tail...
