[dpdk-dev] [PATCH v2 30/32] net/sfc: add callback to query RSS redirection table

[Andrew Rybchenko]

From: Ivan Malov <ivan.ma...@oktetlabs.ru>

Signed-off-by: Ivan Malov <ivan.ma...@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybche...@solarflare.com>
Reviewed-by: Andrew Lee <a...@solarflare.com>
Reviewed-by: Robert Stonehouse <rstoneho...@solarflare.com>
---
 drivers/net/sfc/sfc_ethdev.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index f9a766c..0cd96ac 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1087,6 +1087,36 @@ sfc_dev_rss_hash_update(struct rte_eth_dev *dev,
        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 = {
@@ -1121,6 +1151,7 @@ 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
-- 
2.5.5