+ priv->hw_rss_sup = device_attr_ex.rss_caps.rx_hash_fields_mask;
+ if (!priv->hw_rss_sup) {
+ WARN("no RSS capabilities reported; disabling support"
+ " for UDP RSS");
+ /* Fake support for all possible RSS hash fields. */
+ priv->hw_rss_sup = ~UINT64_C(0);
+ priv->hw_rss_sup = mlx4_conv_rss_hf(priv, -1);
+ /* Filter out known unsupported fields. */
+ priv->hw_rss_sup &=
+ ~(uint64_t)(IBV_RX_HASH_SRC_PORT_UDP |
+ IBV_RX_HASH_DST_PORT_UDP);
+ }
+ DEBUG("supported RSS hash fields mask: %016" PRIx64,
+ priv->hw_rss_sup);