mlx4: bpf_xdp_metadata_rx_hash add xdp rss hash type

Update API for bpf_xdp_metadata_rx_hash() with arg for xdp rss hash type
via matching individual Completion Queue Entry (CQE) status bits.

Fixes: ab46182d0dcb ("net/mlx4_en: Support RX XDP metadata")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/168132893562.340624.12779118462402031248.stgit@firesoul
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 73d10aa..332472f 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -685,11 +685,28 @@ int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
                        enum xdp_rss_hash_type *rss_type)
 {
        struct mlx4_en_xdp_buff *_ctx = (void *)ctx;
+       struct mlx4_cqe *cqe = _ctx->cqe;
+       enum xdp_rss_hash_type xht = 0;
+       __be16 status;
 
        if (unlikely(!(_ctx->dev->features & NETIF_F_RXHASH)))
                return -ENODATA;
 
-       *hash = be32_to_cpu(_ctx->cqe->immed_rss_invalid);
+       *hash = be32_to_cpu(cqe->immed_rss_invalid);
+       status = cqe->status;
+       if (status & cpu_to_be16(MLX4_CQE_STATUS_TCP))
+               xht = XDP_RSS_L4_TCP;
+       if (status & cpu_to_be16(MLX4_CQE_STATUS_UDP))
+               xht = XDP_RSS_L4_UDP;
+       if (status & cpu_to_be16(MLX4_CQE_STATUS_IPV4 | MLX4_CQE_STATUS_IPV4F))
+               xht |= XDP_RSS_L3_IPV4;
+       if (status & cpu_to_be16(MLX4_CQE_STATUS_IPV6)) {
+               xht |= XDP_RSS_L3_IPV6;
+               if (cqe->ipv6_ext_mask)
+                       xht |= XDP_RSS_L3_DYNHDR;
+       }
+       *rss_type = xht;
+
        return 0;
 }