Add a control private flag in ethtool for enable/disable
DIM feature.

Signed-off-by: Huazhong Tan <tanhuazh...@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hnae3.h        |  7 +++
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c    |  1 +
 drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 71 ++++++++++++++++++++++
 3 files changed, 79 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h 
b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index f9d4d23..18b3e43 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -716,6 +716,11 @@ struct hnae3_roce_private_info {
 #define HNAE3_UPE              (HNAE3_USER_UPE | HNAE3_OVERFLOW_UPE)
 #define HNAE3_MPE              (HNAE3_USER_MPE | HNAE3_OVERFLOW_MPE)
 
+enum hnae3_pflag {
+       HNAE3_PFLAG_DIM_ENABLE,
+       HNAE3_PFLAG_MAX
+};
+
 struct hnae3_handle {
        struct hnae3_client *client;
        struct pci_dev *pdev;
@@ -738,6 +743,8 @@ struct hnae3_handle {
 
        /* Network interface message level enabled bits */
        u32 msg_enable;
+
+       unsigned long priv_flags;
 };
 
 #define hnae3_set_field(origin, mask, shift, val) \
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 9e895b9..a567557 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -4246,6 +4246,7 @@ static int hns3_client_init(struct hnae3_handle *handle)
 
        set_bit(HNS3_NIC_STATE_INITED, &priv->state);
        set_bit(HNS3_NIC_STATE_DIM_ENABLE, &priv->state);
+       handle->priv_flags |= BIT(HNAE3_PFLAG_DIM_ENABLE);
 
        if (netif_msg_drv(handle))
                hns3_info_show(priv);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index c30d5d3..e8adc70 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -18,6 +18,11 @@ struct hns3_sfp_type {
        u8 ext_type;
 };
 
+struct hns3_pflag_desc {
+       char name[ETH_GSTRING_LEN];
+       void (*handler)(struct net_device *netdev, bool enable);
+};
+
 /* tqp related stats */
 #define HNS3_TQP_STAT(_string, _member)        {                       \
        .stats_string = _string,                                \
@@ -59,6 +64,8 @@ static const struct hns3_stats hns3_rxq_stats[] = {
        HNS3_TQP_STAT("non_reuse_pg", non_reuse_pg),
 };
 
+#define HNS3_PRIV_FLAGS_LEN ARRAY_SIZE(hns3_priv_flags)
+
 #define HNS3_RXQ_STATS_COUNT ARRAY_SIZE(hns3_rxq_stats)
 
 #define HNS3_TQP_STATS_COUNT (HNS3_TXQ_STATS_COUNT + HNS3_RXQ_STATS_COUNT)
@@ -394,6 +401,26 @@ static void hns3_self_test(struct net_device *ndev,
        netif_dbg(h, drv, ndev, "self test end\n");
 }
 
+static void hns3_update_state(struct net_device *netdev,
+                             enum hns3_nic_state state, bool enable)
+{
+       struct hns3_nic_priv *priv = netdev_priv(netdev);
+
+       if (enable)
+               set_bit(state, &priv->state);
+       else
+               clear_bit(state, &priv->state);
+}
+
+static void hns3_update_dim_state(struct net_device *netdev, bool enable)
+{
+       hns3_update_state(netdev, HNS3_NIC_STATE_DIM_ENABLE, enable);
+}
+
+static const struct hns3_pflag_desc hns3_priv_flags[HNAE3_PFLAG_MAX] = {
+       { "dim_enable",         hns3_update_dim_state },
+};
+
 static int hns3_get_sset_count(struct net_device *netdev, int stringset)
 {
        struct hnae3_handle *h = hns3_get_handle(netdev);
@@ -410,6 +437,9 @@ static int hns3_get_sset_count(struct net_device *netdev, 
int stringset)
        case ETH_SS_TEST:
                return ops->get_sset_count(h, stringset);
 
+       case ETH_SS_PRIV_FLAGS:
+               return HNAE3_PFLAG_MAX;
+
        default:
                return -EOPNOTSUPP;
        }
@@ -463,6 +493,7 @@ static void hns3_get_strings(struct net_device *netdev, u32 
stringset, u8 *data)
        struct hnae3_handle *h = hns3_get_handle(netdev);
        const struct hnae3_ae_ops *ops = h->ae_algo->ops;
        char *buff = (char *)data;
+       int i;
 
        if (!ops->get_strings)
                return;
@@ -475,6 +506,13 @@ static void hns3_get_strings(struct net_device *netdev, 
u32 stringset, u8 *data)
        case ETH_SS_TEST:
                ops->get_strings(h, stringset, data);
                break;
+       case ETH_SS_PRIV_FLAGS:
+               for (i = 0; i < HNS3_PRIV_FLAGS_LEN; i++) {
+                       snprintf(buff, ETH_GSTRING_LEN, "%s",
+                                hns3_priv_flags[i].name);
+                       buff += ETH_GSTRING_LEN;
+               }
+               break;
        default:
                break;
        }
@@ -1516,6 +1554,35 @@ static int hns3_get_module_eeprom(struct net_device 
*netdev,
        return ops->get_module_eeprom(handle, ee->offset, ee->len, data);
 }
 
+static u32 hns3_get_priv_flags(struct net_device *netdev)
+{
+       struct hnae3_handle *handle = hns3_get_handle(netdev);
+
+       return handle->priv_flags;
+}
+
+static int hns3_set_priv_flags(struct net_device *netdev, u32 pflags)
+{
+       struct hnae3_handle *handle = hns3_get_handle(netdev);
+       u32 changed = pflags ^ handle->priv_flags;
+       u32 i;
+
+       for (i = 0; i < HNAE3_PFLAG_MAX; i++) {
+               if (changed & BIT(i)) {
+                       bool enable = !(handle->priv_flags & BIT(i));
+
+                       if (enable)
+                               handle->priv_flags |= BIT(i);
+                       else
+                               handle->priv_flags &= ~BIT(i);
+
+                       hns3_priv_flags[i].handler(netdev, enable);
+               }
+       }
+
+       return 0;
+}
+
 #define HNS3_ETHTOOL_COALESCE  (ETHTOOL_COALESCE_USECS |               \
                                 ETHTOOL_COALESCE_USE_ADAPTIVE |        \
                                 ETHTOOL_COALESCE_RX_USECS_HIGH |       \
@@ -1546,6 +1613,8 @@ static const struct ethtool_ops hns3vf_ethtool_ops = {
        .get_link = hns3_get_link,
        .get_msglevel = hns3_get_msglevel,
        .set_msglevel = hns3_set_msglevel,
+       .get_priv_flags = hns3_get_priv_flags,
+       .set_priv_flags = hns3_set_priv_flags,
 };
 
 static const struct ethtool_ops hns3_ethtool_ops = {
@@ -1582,6 +1651,8 @@ static const struct ethtool_ops hns3_ethtool_ops = {
        .set_fecparam = hns3_set_fecparam,
        .get_module_info = hns3_get_module_info,
        .get_module_eeprom = hns3_get_module_eeprom,
+       .get_priv_flags = hns3_get_priv_flags,
+       .set_priv_flags = hns3_set_priv_flags,
 };
 
 void hns3_ethtool_set_ops(struct net_device *netdev)
-- 
2.7.4

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