net/sfc: query RSS key and hash types config

[dpdk.git] / drivers / net / sfc / sfc_ethdev.c

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index ed2d9e0..3dbfb95 100644 (file)
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -996,6 +996,36 @@ sfc_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
        return 0;
 }
 
+#if EFSYS_OPT_RX_SCALE
+static int
+sfc_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
+                         struct rte_eth_rss_conf *rss_conf)
+{
+       struct sfc_adapter *sa = dev->data->dev_private;
+
+       if ((sa->rss_channels == 1) ||
+           (sa->rss_support != EFX_RX_SCALE_EXCLUSIVE))
+               return -ENOTSUP;
+
+       sfc_adapter_lock(sa);
+
+       /*
+        * Mapping of hash configuration between RTE and EFX is not one-to-one,
+        * hence, conversion is done here to derive a correct set of ETH_RSS
+        * flags which corresponds to the active EFX configuration stored
+        * locally in 'sfc_adapter' and kept up-to-date
+        */
+       rss_conf->rss_hf = sfc_efx_to_rte_hash_type(sa->rss_hash_types);
+       rss_conf->rss_key_len = SFC_RSS_KEY_SIZE;
+       if (rss_conf->rss_key != NULL)
+               rte_memcpy(rss_conf->rss_key, sa->rss_key, SFC_RSS_KEY_SIZE);
+
+       sfc_adapter_unlock(sa);
+
+       return 0;
+}
+#endif
+
 static const struct eth_dev_ops sfc_eth_dev_ops = {
        .dev_configure                  = sfc_dev_configure,
        .dev_start                      = sfc_dev_start,
@@ -1027,6 +1057,9 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
        .flow_ctrl_get                  = sfc_flow_ctrl_get,
        .flow_ctrl_set                  = sfc_flow_ctrl_set,
        .mac_addr_set                   = sfc_mac_addr_set,
+#if EFSYS_OPT_RX_SCALE
+       .rss_hash_conf_get              = sfc_dev_rss_hash_conf_get,
+#endif
        .set_mc_addr_list               = sfc_set_mc_addr_list,
        .rxq_info_get                   = sfc_rx_queue_info_get,
        .txq_info_get                   = sfc_tx_queue_info_get,