1 files changed, 446 insertions, 11 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
index 762af16ed021..7f6c225666c1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
@@ -38,16 +38,77 @@
 #define MLX5E_100MB (100000)
 #define MLX5E_1GB   (1000000)
 
+#define MLX5E_CEE_STATE_UP    1
+#define MLX5E_CEE_STATE_DOWN  0
+
+/* If dcbx mode is non-host set the dcbx mode to host.
+ */
+static int mlx5e_dcbnl_set_dcbx_mode(struct mlx5e_priv *priv,
+				     enum mlx5_dcbx_oper_mode mode)
+{
+	struct mlx5_core_dev *mdev = priv->mdev;
+	u32 param[MLX5_ST_SZ_DW(dcbx_param)];
+	int err;
+
+	err = mlx5_query_port_dcbx_param(mdev, param);
+	if (err)
+		return err;
+
+	MLX5_SET(dcbx_param, param, version_admin, mode);
+	if (mode != MLX5E_DCBX_PARAM_VER_OPER_HOST)
+		MLX5_SET(dcbx_param, param, willing_admin, 1);
+
+	return mlx5_set_port_dcbx_param(mdev, param);
+}
+
+static int mlx5e_dcbnl_switch_to_host_mode(struct mlx5e_priv *priv)
+{
+	struct mlx5e_dcbx *dcbx = &priv->dcbx;
+	int err;
+
+	if (!MLX5_CAP_GEN(priv->mdev, dcbx))
+		return 0;
+
+	if (dcbx->mode == MLX5E_DCBX_PARAM_VER_OPER_HOST)
+		return 0;
+
+	err = mlx5e_dcbnl_set_dcbx_mode(priv, MLX5E_DCBX_PARAM_VER_OPER_HOST);
+	if (err)
+		return err;
+
+	dcbx->mode = MLX5E_DCBX_PARAM_VER_OPER_HOST;
+	return 0;
+}
+
 static int mlx5e_dcbnl_ieee_getets(struct net_device *netdev,
 				   struct ieee_ets *ets)
 {
 	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5_core_dev *mdev = priv->mdev;
+	int err = 0;
+	int i;
 
 	if (!MLX5_CAP_GEN(priv->mdev, ets))
 		return -ENOTSUPP;
 
-	memcpy(ets, &priv->params.ets, sizeof(*ets));
-	return 0;
+	ets->ets_cap = mlx5_max_tc(priv->mdev) + 1;
+	for (i = 0; i < ets->ets_cap; i++) {
+		err = mlx5_query_port_prio_tc(mdev, i, &ets->prio_tc[i]);
+		if (err)
+			return err;
+	}
+
+	for (i = 0; i < ets->ets_cap; i++) {
+		err = mlx5_query_port_tc_bw_alloc(mdev, i, &ets->tc_tx_bw[i]);
+		if (err)
+			return err;
+		if (ets->tc_tx_bw[i] < MLX5E_MAX_BW_ALLOC)
+			priv->dcbx.tc_tsa[i] = IEEE_8021QAZ_TSA_ETS;
+	}
+
+	memcpy(ets->tc_tsa, priv->dcbx.tc_tsa, sizeof(ets->tc_tsa));
+
+	return err;
 }
 
 enum {
@@ -110,9 +171,6 @@ int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets)
 	int max_tc = mlx5_max_tc(mdev);
 	int err;
 
-	if (!MLX5_CAP_GEN(mdev, ets))
-		return -ENOTSUPP;
-
 	mlx5e_build_tc_group(ets, tc_group, max_tc);
 	mlx5e_build_tc_tx_bw(ets, tc_tx_bw, tc_group, max_tc);
 
@@ -124,7 +182,14 @@ int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets)
 	if (err)
 		return err;
 
-	return mlx5_set_port_tc_bw_alloc(mdev, tc_tx_bw);
+	err = mlx5_set_port_tc_bw_alloc(mdev, tc_tx_bw);
+
+	if (err)
+		return err;
+
+	memcpy(priv->dcbx.tc_tsa, ets->tc_tsa, sizeof(ets->tc_tsa));
+
+	return err;
 }
 
 static int mlx5e_dbcnl_validate_ets(struct net_device *netdev,
@@ -170,6 +235,9 @@ static int mlx5e_dcbnl_ieee_setets(struct net_device *netdev,
 	struct mlx5e_priv *priv = netdev_priv(netdev);
 	int err;
 
+	if (!MLX5_CAP_GEN(priv->mdev, ets))
+		return -ENOTSUPP;
+
 	err = mlx5e_dbcnl_validate_ets(netdev, ets);
 	if (err)
 		return err;
@@ -178,9 +246,6 @@ static int mlx5e_dcbnl_ieee_setets(struct net_device *netdev,
 	if (err)
 		return err;
 
-	memcpy(&priv->params.ets, ets, sizeof(*ets));
-	priv->params.ets.ets_cap = mlx5_max_tc(priv->mdev) + 1;
-
 	return 0;
 }
 
@@ -222,13 +287,39 @@ static int mlx5e_dcbnl_ieee_setpfc(struct net_device *dev,
 
 static u8 mlx5e_dcbnl_getdcbx(struct net_device *dev)
 {
-	return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
+	struct mlx5e_priv *priv = netdev_priv(dev);
+	struct mlx5e_dcbx *dcbx = &priv->dcbx;
+	u8 mode = DCB_CAP_DCBX_VER_IEEE | DCB_CAP_DCBX_VER_CEE;
+
+	if (dcbx->mode == MLX5E_DCBX_PARAM_VER_OPER_HOST)
+		mode |= DCB_CAP_DCBX_HOST;
+
+	return mode;
 }
 
 static u8 mlx5e_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 {
+	struct mlx5e_priv *priv = netdev_priv(dev);
+	struct mlx5e_dcbx *dcbx = &priv->dcbx;
+
+	if ((!mode) && MLX5_CAP_GEN(priv->mdev, dcbx)) {
+		if (dcbx->mode == MLX5E_DCBX_PARAM_VER_OPER_AUTO)
+			return 0;
+
+		/* set dcbx to fw controlled */
+		if (!mlx5e_dcbnl_set_dcbx_mode(priv, MLX5E_DCBX_PARAM_VER_OPER_AUTO)) {
+			dcbx->mode = MLX5E_DCBX_PARAM_VER_OPER_AUTO;
+			return 0;
+		}
+
+		return 1;
+	}
+
+	if (mlx5e_dcbnl_switch_to_host_mode(netdev_priv(dev)))
+		return 1;
+
 	if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
-	    (mode & DCB_CAP_DCBX_VER_CEE) ||
+	    !(mode & DCB_CAP_DCBX_VER_CEE) ||
 	    !(mode & DCB_CAP_DCBX_VER_IEEE) ||
 	    !(mode & DCB_CAP_DCBX_HOST))
 		return 1;
@@ -304,6 +395,284 @@ static int mlx5e_dcbnl_ieee_setmaxrate(struct net_device *netdev,
 	return mlx5_modify_port_ets_rate_limit(mdev, max_bw_value, max_bw_unit);
 }
 
+static u8 mlx5e_dcbnl_setall(struct net_device *netdev)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg;
+	struct mlx5_core_dev *mdev = priv->mdev;
+	struct ieee_ets ets;
+	struct ieee_pfc pfc;
+	int err = -ENOTSUPP;
+	int i;
+
+	if (!MLX5_CAP_GEN(mdev, ets))
+		goto out;
+
+	memset(&ets, 0, sizeof(ets));
+	memset(&pfc, 0, sizeof(pfc));
+
+	ets.ets_cap = IEEE_8021QAZ_MAX_TCS;
+	for (i = 0; i < CEE_DCBX_MAX_PGS; i++) {
+		ets.tc_tx_bw[i] = cee_cfg->pg_bw_pct[i];
+		ets.tc_rx_bw[i] = cee_cfg->pg_bw_pct[i];
+		ets.tc_tsa[i]   = IEEE_8021QAZ_TSA_ETS;
+		ets.prio_tc[i]  = cee_cfg->prio_to_pg_map[i];
+	}
+
+	err = mlx5e_dbcnl_validate_ets(netdev, &ets);
+	if (err) {
+		netdev_err(netdev,
+			   "%s, Failed to validate ETS: %d\n", __func__, err);
+		goto out;
+	}
+
+	err = mlx5e_dcbnl_ieee_setets_core(priv, &ets);
+	if (err) {
+		netdev_err(netdev,
+			   "%s, Failed to set ETS: %d\n", __func__, err);
+		goto out;
+	}
+
+	/* Set PFC */
+	pfc.pfc_cap = mlx5_max_tc(mdev) + 1;
+	if (!cee_cfg->pfc_enable)
+		pfc.pfc_en = 0;
+	else
+		for (i = 0; i < CEE_DCBX_MAX_PRIO; i++)
+			pfc.pfc_en |= cee_cfg->pfc_setting[i] << i;
+
+	err = mlx5e_dcbnl_ieee_setpfc(netdev, &pfc);
+	if (err) {
+		netdev_err(netdev,
+			   "%s, Failed to set PFC: %d\n", __func__, err);
+		goto out;
+	}
+out:
+	return err ? MLX5_DCB_NO_CHG : MLX5_DCB_CHG_RESET;
+}
+
+static u8 mlx5e_dcbnl_getstate(struct net_device *netdev)
+{
+	return MLX5E_CEE_STATE_UP;
+}
+
+static void mlx5e_dcbnl_getpermhwaddr(struct net_device *netdev,
+				      u8 *perm_addr)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+
+	if (!perm_addr)
+		return;
+
+	mlx5_query_nic_vport_mac_address(priv->mdev, 0, perm_addr);
+}
+
+static void mlx5e_dcbnl_setpgtccfgtx(struct net_device *netdev,
+				     int priority, u8 prio_type,
+				     u8 pgid, u8 bw_pct, u8 up_map)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg;
+
+	if (priority >= CEE_DCBX_MAX_PRIO) {
+		netdev_err(netdev,
+			   "%s, priority is out of range\n", __func__);
+		return;
+	}
+
+	if (pgid >= CEE_DCBX_MAX_PGS) {
+		netdev_err(netdev,
+			   "%s, priority group is out of range\n", __func__);
+		return;
+	}
+
+	cee_cfg->prio_to_pg_map[priority] = pgid;
+}
+
+static void mlx5e_dcbnl_setpgbwgcfgtx(struct net_device *netdev,
+				      int pgid, u8 bw_pct)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg;
+
+	if (pgid >= CEE_DCBX_MAX_PGS) {
+		netdev_err(netdev,
+			   "%s, priority group is out of range\n", __func__);
+		return;
+	}
+
+	cee_cfg->pg_bw_pct[pgid] = bw_pct;
+}
+
+static void mlx5e_dcbnl_getpgtccfgtx(struct net_device *netdev,
+				     int priority, u8 *prio_type,
+				     u8 *pgid, u8 *bw_pct, u8 *up_map)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5_core_dev *mdev = priv->mdev;
+
+	if (priority >= CEE_DCBX_MAX_PRIO) {
+		netdev_err(netdev,
+			   "%s, priority is out of range\n", __func__);
+		return;
+	}
+
+	*prio_type = 0;
+	*bw_pct = 0;
+	*up_map = 0;
+
+	if (mlx5_query_port_prio_tc(mdev, priority, pgid))
+		*pgid = 0;
+}
+
+static void mlx5e_dcbnl_getpgbwgcfgtx(struct net_device *netdev,
+				      int pgid, u8 *bw_pct)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5_core_dev *mdev = priv->mdev;
+
+	if (pgid >= CEE_DCBX_MAX_PGS) {
+		netdev_err(netdev,
+			   "%s, priority group is out of range\n", __func__);
+		return;
+	}
+
+	if (mlx5_query_port_tc_bw_alloc(mdev, pgid, bw_pct))
+		*bw_pct = 0;
+}
+
+static void mlx5e_dcbnl_setpfccfg(struct net_device *netdev,
+				  int priority, u8 setting)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg;
+
+	if (priority >= CEE_DCBX_MAX_PRIO) {
+		netdev_err(netdev,
+			   "%s, priority is out of range\n", __func__);
+		return;
+	}
+
+	if (setting > 1)
+		return;
+
+	cee_cfg->pfc_setting[priority] = setting;
+}
+
+static int
+mlx5e_dcbnl_get_priority_pfc(struct net_device *netdev,
+			     int priority, u8 *setting)
+{
+	struct ieee_pfc pfc;
+	int err;
+
+	err = mlx5e_dcbnl_ieee_getpfc(netdev, &pfc);
+
+	if (err)
+		*setting = 0;
+	else
+		*setting = (pfc.pfc_en >> priority) & 0x01;
+
+	return err;
+}
+
+static void mlx5e_dcbnl_getpfccfg(struct net_device *netdev,
+				  int priority, u8 *setting)
+{
+	if (priority >= CEE_DCBX_MAX_PRIO) {
+		netdev_err(netdev,
+			   "%s, priority is out of range\n", __func__);
+		return;
+	}
+
+	if (!setting)
+		return;
+
+	mlx5e_dcbnl_get_priority_pfc(netdev, priority, setting);
+}
+
+static u8 mlx5e_dcbnl_getcap(struct net_device *netdev,
+			     int capid, u8 *cap)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5_core_dev *mdev = priv->mdev;
+	u8 rval = 0;
+
+	switch (capid) {
+	case DCB_CAP_ATTR_PG:
+		*cap = true;
+		break;
+	case DCB_CAP_ATTR_PFC:
+		*cap = true;
+		break;
+	case DCB_CAP_ATTR_UP2TC:
+		*cap = false;
+		break;
+	case DCB_CAP_ATTR_PG_TCS:
+		*cap = 1 << mlx5_max_tc(mdev);
+		break;
+	case DCB_CAP_ATTR_PFC_TCS:
+		*cap = 1 << mlx5_max_tc(mdev);
+		break;
+	case DCB_CAP_ATTR_GSP:
+		*cap = false;
+		break;
+	case DCB_CAP_ATTR_BCN:
+		*cap = false;
+		break;
+	case DCB_CAP_ATTR_DCBX:
+		*cap = (DCB_CAP_DCBX_LLD_MANAGED |
+			DCB_CAP_DCBX_VER_CEE |
+			DCB_CAP_DCBX_STATIC);
+		break;
+	default:
+		*cap = 0;
+		rval = 1;
+		break;
+	}
+
+	return rval;
+}
+
+static int mlx5e_dcbnl_getnumtcs(struct net_device *netdev,
+				 int tcs_id, u8 *num)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5_core_dev *mdev = priv->mdev;
+
+	switch (tcs_id) {
+	case DCB_NUMTCS_ATTR_PG:
+	case DCB_NUMTCS_ATTR_PFC:
+		*num = mlx5_max_tc(mdev) + 1;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static u8 mlx5e_dcbnl_getpfcstate(struct net_device *netdev)
+{
+	struct ieee_pfc pfc;
+
+	if (mlx5e_dcbnl_ieee_getpfc(netdev, &pfc))
+		return MLX5E_CEE_STATE_DOWN;
+
+	return pfc.pfc_en ? MLX5E_CEE_STATE_UP : MLX5E_CEE_STATE_DOWN;
+}
+
+static void mlx5e_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+	struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg;
+
+	if ((state != MLX5E_CEE_STATE_UP) && (state != MLX5E_CEE_STATE_DOWN))
+		return;
+
+	cee_cfg->pfc_enable = state;
+}
+
 const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops = {
 	.ieee_getets	= mlx5e_dcbnl_ieee_getets,
 	.ieee_setets	= mlx5e_dcbnl_ieee_setets,
@@ -313,4 +682,70 @@ const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops = {
 	.ieee_setpfc	= mlx5e_dcbnl_ieee_setpfc,
 	.getdcbx	= mlx5e_dcbnl_getdcbx,
 	.setdcbx	= mlx5e_dcbnl_setdcbx,
+
+/* CEE interfaces */
+	.setall         = mlx5e_dcbnl_setall,
+	.getstate       = mlx5e_dcbnl_getstate,
+	.getpermhwaddr  = mlx5e_dcbnl_getpermhwaddr,
+
+	.setpgtccfgtx   = mlx5e_dcbnl_setpgtccfgtx,
+	.setpgbwgcfgtx  = mlx5e_dcbnl_setpgbwgcfgtx,
+	.getpgtccfgtx   = mlx5e_dcbnl_getpgtccfgtx,
+	.getpgbwgcfgtx  = mlx5e_dcbnl_getpgbwgcfgtx,
+
+	.setpfccfg      = mlx5e_dcbnl_setpfccfg,
+	.getpfccfg      = mlx5e_dcbnl_getpfccfg,
+	.getcap         = mlx5e_dcbnl_getcap,
+	.getnumtcs      = mlx5e_dcbnl_getnumtcs,
+	.getpfcstate    = mlx5e_dcbnl_getpfcstate,
+	.setpfcstate    = mlx5e_dcbnl_setpfcstate,
 };
+
+static void mlx5e_dcbnl_query_dcbx_mode(struct mlx5e_priv *priv,
+					enum mlx5_dcbx_oper_mode *mode)
+{
+	u32 out[MLX5_ST_SZ_DW(dcbx_param)];
+
+	*mode = MLX5E_DCBX_PARAM_VER_OPER_HOST;
+
+	if (!mlx5_query_port_dcbx_param(priv->mdev, out))
+		*mode = MLX5_GET(dcbx_param, out, version_oper);
+
+	/* From driver's point of view, we only care if the mode
+	 * is host (HOST) or non-host (AUTO)
+	 */
+	if (*mode != MLX5E_DCBX_PARAM_VER_OPER_HOST)
+		*mode = MLX5E_DCBX_PARAM_VER_OPER_AUTO;
+}
+
+static void mlx5e_ets_init(struct mlx5e_priv *priv)
+{
+	int i;
+	struct ieee_ets ets;
+
+	memset(&ets, 0, sizeof(ets));
+	ets.ets_cap = mlx5_max_tc(priv->mdev) + 1;
+	for (i = 0; i < ets.ets_cap; i++) {
+		ets.tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC;
+		ets.tc_tsa[i] = IEEE_8021QAZ_TSA_VENDOR;
+		ets.prio_tc[i] = i;
+	}
+
+	memcpy(priv->dcbx.tc_tsa, ets.tc_tsa, sizeof(ets.tc_tsa));
+
+	/* tclass[prio=0]=1, tclass[prio=1]=0, tclass[prio=i]=i (for i>1) */
+	ets.prio_tc[0] = 1;
+	ets.prio_tc[1] = 0;
+
+	mlx5e_dcbnl_ieee_setets_core(priv, &ets);
+}
+
+void mlx5e_dcbnl_initialize(struct mlx5e_priv *priv)
+{
+	struct mlx5e_dcbx *dcbx = &priv->dcbx;
+
+	if (MLX5_CAP_GEN(priv->mdev, dcbx))
+		mlx5e_dcbnl_query_dcbx_mode(priv, &dcbx->mode);
+
+	mlx5e_ets_init(priv);
+}