net/sfc: query RSS redirection table

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 3d7483d..1d5696f 100644 (file)
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1086,6 +1086,36 @@ fail_scale_mode_set:
        sfc_adapter_unlock(sa);
        return -rc;
 }
+
+static int
+sfc_dev_rss_reta_query(struct rte_eth_dev *dev,
+                      struct rte_eth_rss_reta_entry64 *reta_conf,
+                      uint16_t reta_size)
+{
+       struct sfc_adapter *sa = dev->data->dev_private;
+       int entry;
+
+       if ((sa->rss_channels == 1) ||
+           (sa->rss_support != EFX_RX_SCALE_EXCLUSIVE))
+               return -ENOTSUP;
+
+       if (reta_size != EFX_RSS_TBL_SIZE)
+               return -EINVAL;
+
+       sfc_adapter_lock(sa);
+
+       for (entry = 0; entry < reta_size; entry++) {
+               int grp = entry / RTE_RETA_GROUP_SIZE;
+               int grp_idx = entry % RTE_RETA_GROUP_SIZE;
+
+               if ((reta_conf[grp].mask >> grp_idx) & 1)
+                       reta_conf[grp].reta[grp_idx] = sa->rss_tbl[entry];
+       }
+
+       sfc_adapter_unlock(sa);
+
+       return 0;
+}
 #endif
 
 static const struct eth_dev_ops sfc_eth_dev_ops = {
@@ -1120,6 +1150,7 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
        .flow_ctrl_set                  = sfc_flow_ctrl_set,
        .mac_addr_set                   = sfc_mac_addr_set,
 #if EFSYS_OPT_RX_SCALE
+       .reta_query                     = sfc_dev_rss_reta_query,
        .rss_hash_update                = sfc_dev_rss_hash_update,
        .rss_hash_conf_get              = sfc_dev_rss_hash_conf_get,
 #endif