net: hns: fixes a bug of RSS

If trying to get receive flow hash indirection table by ethtool, it needs
to call .get_rxnfc to get ring number first. So this patch implements the
.get_rxnfc of ethtool. And the data type of rss_indir_table is u32, it has
to be multiply by the width of data type when using memcpy.

Signed-off-by: Kejian Yan <yankejian@huawei.com>
Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 22 insertions, 2 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
index 648b31a5425d..285c893ab135 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
@@ -791,7 +791,8 @@ static int hns_ae_get_rss(struct hnae_handle *handle, u32 *indir, u8 *key,
                 memcpy(key, ppe_cb->rss_key, HNS_PPEV2_RSS_KEY_SIZE);
 
         /* update the current hash->queue mappings from the shadow RSS table */
-        memcpy(indir, ppe_cb->rss_indir_table, HNS_PPEV2_RSS_IND_TBL_SIZE);
+        memcpy(indir, ppe_cb->rss_indir_table,
+               HNS_PPEV2_RSS_IND_TBL_SIZE * sizeof(*indir));
 
         return 0;
 }
@@ -806,7 +807,8 @@ static int hns_ae_set_rss(struct hnae_handle *handle, const u32 *indir,
                 hns_ppe_set_rss_key(ppe_cb, (u32 *)key);
 
         /* update the shadow RSS table with user specified qids */
-        memcpy(ppe_cb->rss_indir_table, indir, HNS_PPEV2_RSS_IND_TBL_SIZE);
+        memcpy(ppe_cb->rss_indir_table, indir,
+               HNS_PPEV2_RSS_IND_TBL_SIZE * sizeof(*indir));
 
         /* now update the hardware */
         hns_ppe_set_indir_table(ppe_cb, ppe_cb->rss_indir_table);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 2229905625ca..9c3ba65988e1 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -1245,6 +1245,23 @@ hns_set_rss(struct net_device *netdev, const u32 *indir, const u8 *key,
         return ops->set_rss(priv->ae_handle, indir, key, hfunc);
 }
 
+static int hns_get_rxnfc(struct net_device *netdev,
+                         struct ethtool_rxnfc *cmd,
+                         u32 *rule_locs)
+{
+        struct hns_nic_priv *priv = netdev_priv(netdev);
+
+        switch (cmd->cmd) {
+        case ETHTOOL_GRXRINGS:
+                cmd->data = priv->ae_handle->q_num;
+                break;
+        default:
+                return -EOPNOTSUPP;
+        }
+
+        return 0;
+}
+
 static struct ethtool_ops hns_ethtool_ops = {
         .get_drvinfo = hns_nic_get_drvinfo,
         .get_link  = hns_nic_get_link,
@@ -1268,6 +1285,7 @@ static struct ethtool_ops hns_ethtool_ops = {
         .get_rxfh_indir_size = hns_get_rss_indir_size,
         .get_rxfh = hns_get_rss,
         .set_rxfh = hns_set_rss,
+        .get_rxnfc = hns_get_rxnfc,
 };
 
 void hns_ethtool_set_ops(struct net_device *ndev)