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| author |   Jesper Dangaard Brouer <brouer@redhat.com> | 2018-01-03 11:25:18 +0100 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2018-01-05 15:21:20 -0800 |
| commit | 0ddf543226acacfb9f521dafc6c817d5b04c7b1f (patch) | |
| tree | 7ecdc35234c261098aefc513df21dfd8354664c7 /drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | |
| parent | xdp: base API for new XDP rx-queue info concept (diff) | |
| download | linux-dev-0ddf543226acacfb9f521dafc6c817d5b04c7b1f.tar.xz linux-dev-0ddf543226acacfb9f521dafc6c817d5b04c7b1f.zip | |
xdp/mlx5: setup xdp_rxq_info
The mlx5 driver have a special drop-RQ queue (one per interface) that
simply drops all incoming traffic. It helps driver keep other HW
objects (flow steering) alive upon down/up operations. It is
temporarily pointed by flow steering objects during the interface
setup, and when interface is down. It lacks many fields that are set
in a regular RQ (for example its state is never switched to
MLX5_RQC_STATE_RDY). (Thanks to Tariq Toukan for explanation).
The XDP RX-queue info for this drop-RQ marked as unused, which
allow us to use the same takedown/free code path as other RX-queues.
Driver hook points for xdp_rxq_info:
* reg : mlx5e_alloc_rq()
* unused: mlx5e_alloc_drop_rq()
* unreg : mlx5e_free_rq()
Tested on actual hardware with samples/bpf program
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Matan Barak <matanb@mellanox.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index 5b499c7a698f..7b38480811d4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -812,6 +812,7 @@ static inline int mlx5e_xdp_handle(struct mlx5e_rq *rq, xdp_set_data_meta_invalid(&xdp); xdp.data_end = xdp.data + *len; xdp.data_hard_start = va; + xdp.rxq = &rq->xdp_rxq; act = bpf_prog_run_xdp(prog, &xdp); switch (act) { |