On 12 Jun 2019, at 8:56, Maxim Mikityanskiy wrote: > This series contains improvements to the AF_XDP kernel infrastructure > and AF_XDP support in mlx5e. The infrastructure improvements are > required for mlx5e, but also some of them benefit to all drivers, and > some can be useful for other drivers that want to implement AF_XDP. > > The performance testing was performed on a machine with the following > configuration: > > - 24 cores of Intel Xeon E5-2620 v3 @ 2.40 GHz > - Mellanox ConnectX-5 Ex with 100 Gbit/s link > > The results with retpoline disabled, single stream: > > txonly: 33.3 Mpps (21.5 Mpps with queue and app pinned to the same CPU) > rxdrop: 12.2 Mpps > l2fwd: 9.4 Mpps > > The results with retpoline enabled, single stream: > > txonly: 21.3 Mpps (14.1 Mpps with queue and app pinned to the same CPU) > rxdrop: 9.9 Mpps > l2fwd: 6.8 Mpps > > v2 changes: > > Added patches for mlx5e and addressed the comments for v1. Rebased for > bpf-next. > > v3 changes: > > Rebased for the newer bpf-next, resolved conflicts in libbpf. Addressed > Björn's comments for coding style. Fixed a bug in error handling flow in > mlx5e_open_xsk. > > v4 changes: > > UAPI is not changed, XSK RX queues are exposed to the kernel. The lower > half of the available amount of RX queues are regular queues, and the > upper half are XSK RX queues. The patch "xsk: Extend channels to support > combined XSK/non-XSK traffic" was dropped. The final patch was reworked > accordingly. > > Added "net/mlx5e: Attach/detach XDP program safely", as the changes > introduced in the XSK patch base on the stuff from this one. > > Added "libbpf: Support drivers with non-combined channels", which aligns > the condition in libbpf with the condition in the kernel. > > Rebased over the newer bpf-next. Very nice change for the RX queues! For the series: Tested-by: Jonathan Lemon <jonathan.lemon@xxxxxxxxx>
