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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
....@@ -35,6 +35,8 @@
3535 #include "en/port.h"
3636 #include "en/port_buffer.h"
3737 
38
+#define MLX5E_MAX_BW_ALLOC 100 /* Max percentage of BW allocation */
39
+
3840 #define MLX5E_100MB (100000)
3941 #define MLX5E_1GB   (1000000)
4042 
....@@ -47,6 +49,12 @@
4749 enum {
4850 	MLX5E_VENDOR_TC_GROUP_NUM = 7,
4951 	MLX5E_LOWEST_PRIO_GROUP   = 0,
52
+};
53
+
54
+enum {
55
+	MLX5_DCB_CHG_RESET,
56
+	MLX5_DCB_NO_CHG,
57
+	MLX5_DCB_CHG_NO_RESET,
5058 };
5159 
5260 #define MLX5_DSCP_SUPPORTED(mdev) (MLX5_CAP_GEN(mdev, qcam_reg)  && \
....@@ -109,12 +117,14 @@
109117 	if (!MLX5_CAP_GEN(priv->mdev, ets))
110118 		return -EOPNOTSUPP;
111119 
112
-	ets->ets_cap = mlx5_max_tc(priv->mdev) + 1;
113
-	for (i = 0; i < ets->ets_cap; i++) {
120
+	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
114121 		err = mlx5_query_port_prio_tc(mdev, i, &ets->prio_tc[i]);
115122 		if (err)
116123 			return err;
124
+	}
117125 
126
+	ets->ets_cap = mlx5_max_tc(priv->mdev) + 1;
127
+	for (i = 0; i < ets->ets_cap; i++) {
118128 		err = mlx5_query_port_tc_group(mdev, i, &tc_group[i]);
119129 		if (err)
120130 			return err;
....@@ -238,7 +248,7 @@
238248  *   Report both group #0 and #1 as ETS type.
239249  *     All the tcs in group #0 will be reported with 0% BW.
240250  */
241
-int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets)
251
+static int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets)
242252 {
243253 	struct mlx5_core_dev *mdev = priv->mdev;
244254 	u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS];
....@@ -680,7 +690,7 @@
680690 
681691 	memset(perm_addr, 0xff, MAX_ADDR_LEN);
682692 
683
-	mlx5_query_nic_vport_mac_address(priv->mdev, 0, perm_addr);
693
+	mlx5_query_mac_address(priv->mdev, perm_addr);
684694 }
685695 
686696 static void mlx5e_dcbnl_setpgtccfgtx(struct net_device *netdev,
....@@ -977,7 +987,7 @@
977987 	return err;
978988 }
979989 
980
-const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops = {
990
+static const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops = {
981991 	.ieee_getets	= mlx5e_dcbnl_ieee_getets,
982992 	.ieee_setets	= mlx5e_dcbnl_ieee_setets,
983993 	.ieee_getmaxrate = mlx5e_dcbnl_ieee_getmaxrate,
....@@ -1008,6 +1018,24 @@
10081018 	.getpfcstate    = mlx5e_dcbnl_getpfcstate,
10091019 	.setpfcstate    = mlx5e_dcbnl_setpfcstate,
10101020 };
1021
+
1022
+void mlx5e_dcbnl_build_netdev(struct net_device *netdev)
1023
+{
1024
+	struct mlx5e_priv *priv = netdev_priv(netdev);
1025
+	struct mlx5_core_dev *mdev = priv->mdev;
1026
+
1027
+	if (MLX5_CAP_GEN(mdev, vport_group_manager) && MLX5_CAP_GEN(mdev, qos))
1028
+		netdev->dcbnl_ops = &mlx5e_dcbnl_ops;
1029
+}
1030
+
1031
+void mlx5e_dcbnl_build_rep_netdev(struct net_device *netdev)
1032
+{
1033
+	struct mlx5e_priv *priv = netdev_priv(netdev);
1034
+	struct mlx5_core_dev *mdev = priv->mdev;
1035
+
1036
+	if (MLX5_CAP_GEN(mdev, qos))
1037
+		netdev->dcbnl_ops = &mlx5e_dcbnl_ops;
1038
+}
10111039 
10121040 static void mlx5e_dcbnl_query_dcbx_mode(struct mlx5e_priv *priv,
10131041 					enum mlx5_dcbx_oper_mode *mode)
....@@ -1098,51 +1126,62 @@
10981126 	mlx5e_dcbnl_dscp_app(priv, DELETE);
10991127 }
11001128 
1101
-static void mlx5e_trust_update_tx_min_inline_mode(struct mlx5e_priv *priv,
1102
-						  struct mlx5e_params *params)
1129
+static void mlx5e_params_calc_trust_tx_min_inline_mode(struct mlx5_core_dev *mdev,
1130
+						       struct mlx5e_params *params,
1131
+						       u8 trust_state)
11031132 {
1104
-	params->tx_min_inline_mode = mlx5e_params_calculate_tx_min_inline(priv->mdev);
1105
-	if (priv->dcbx_dp.trust_state == MLX5_QPTS_TRUST_DSCP &&
1133
+	mlx5_query_min_inline(mdev, &params->tx_min_inline_mode);
1134
+	if (trust_state == MLX5_QPTS_TRUST_DSCP &&
11061135 	    params->tx_min_inline_mode == MLX5_INLINE_MODE_L2)
11071136 		params->tx_min_inline_mode = MLX5_INLINE_MODE_IP;
11081137 }
11091138 
1110
-static void mlx5e_trust_update_sq_inline_mode(struct mlx5e_priv *priv)
1139
+static int mlx5e_update_trust_state_hw(struct mlx5e_priv *priv, void *context)
11111140 {
1112
-	struct mlx5e_channels new_channels = {};
1141
+	u8 *trust_state = context;
1142
+	int err;
11131143 
1114
-	mutex_lock(&priv->state_lock);
1144
+	err = mlx5_set_trust_state(priv->mdev, *trust_state);
1145
+	if (err)
1146
+		return err;
1147
+	priv->dcbx_dp.trust_state = *trust_state;
11151148 
1116
-	new_channels.params = priv->channels.params;
1117
-	mlx5e_trust_update_tx_min_inline_mode(priv, &new_channels.params);
1118
-
1119
-	if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
1120
-		priv->channels.params = new_channels.params;
1121
-		goto out;
1122
-	}
1123
-
1124
-	/* Skip if tx_min_inline is the same */
1125
-	if (new_channels.params.tx_min_inline_mode ==
1126
-	    priv->channels.params.tx_min_inline_mode)
1127
-		goto out;
1128
-
1129
-	if (mlx5e_open_channels(priv, &new_channels))
1130
-		goto out;
1131
-	mlx5e_switch_priv_channels(priv, &new_channels, NULL);
1132
-
1133
-out:
1134
-	mutex_unlock(&priv->state_lock);
1149
+	return 0;
11351150 }
11361151 
11371152 static int mlx5e_set_trust_state(struct mlx5e_priv *priv, u8 trust_state)
11381153 {
1139
-	int err;
1154
+	struct mlx5e_channels new_channels = {};
1155
+	bool reset_channels = true;
1156
+	bool opened;
1157
+	int err = 0;
11401158 
1141
-	err = mlx5_set_trust_state(priv->mdev, trust_state);
1142
-	if (err)
1143
-		return err;
1144
-	priv->dcbx_dp.trust_state = trust_state;
1145
-	mlx5e_trust_update_sq_inline_mode(priv);
1159
+	mutex_lock(&priv->state_lock);
1160
+
1161
+	new_channels.params = priv->channels.params;
1162
+	mlx5e_params_calc_trust_tx_min_inline_mode(priv->mdev, &new_channels.params,
1163
+						   trust_state);
1164
+
1165
+	opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
1166
+	if (!opened)
1167
+		reset_channels = false;
1168
+
1169
+	/* Skip if tx_min_inline is the same */
1170
+	if (new_channels.params.tx_min_inline_mode ==
1171
+	    priv->channels.params.tx_min_inline_mode)
1172
+		reset_channels = false;
1173
+
1174
+	if (reset_channels) {
1175
+		err = mlx5e_safe_switch_channels(priv, &new_channels,
1176
+						 mlx5e_update_trust_state_hw,
1177
+						 &trust_state);
1178
+	} else {
1179
+		err = mlx5e_update_trust_state_hw(priv, &trust_state);
1180
+		if (!err && !opened)
1181
+			priv->channels.params = new_channels.params;
1182
+	}
1183
+
1184
+	mutex_unlock(&priv->state_lock);
11461185 
11471186 	return err;
11481187 }
....@@ -1173,13 +1212,42 @@
11731212 	if (err)
11741213 		return err;
11751214 
1176
-	mlx5e_trust_update_tx_min_inline_mode(priv, &priv->channels.params);
1215
+	if (priv->dcbx_dp.trust_state == MLX5_QPTS_TRUST_PCP && priv->dcbx.dscp_app_cnt) {
1216
+		/*
1217
+		 * Align the driver state with the register state.
1218
+		 * Temporary state change is required to enable the app list reset.
1219
+		 */
1220
+		priv->dcbx_dp.trust_state = MLX5_QPTS_TRUST_DSCP;
1221
+		mlx5e_dcbnl_delete_app(priv);
1222
+		priv->dcbx_dp.trust_state = MLX5_QPTS_TRUST_PCP;
1223
+	}
1224
+
1225
+	mlx5e_params_calc_trust_tx_min_inline_mode(priv->mdev, &priv->channels.params,
1226
+						   priv->dcbx_dp.trust_state);
11771227 
11781228 	err = mlx5_query_dscp2prio(priv->mdev, priv->dcbx_dp.dscp2prio);
11791229 	if (err)
11801230 		return err;
11811231 
11821232 	return 0;
1233
+}
1234
+
1235
+#define MLX5E_BUFFER_CELL_SHIFT 7
1236
+
1237
+static u16 mlx5e_query_port_buffers_cell_size(struct mlx5e_priv *priv)
1238
+{
1239
+	struct mlx5_core_dev *mdev = priv->mdev;
1240
+	u32 out[MLX5_ST_SZ_DW(sbcam_reg)] = {};
1241
+	u32 in[MLX5_ST_SZ_DW(sbcam_reg)] = {};
1242
+
1243
+	if (!MLX5_CAP_GEN(mdev, sbcam_reg))
1244
+		return (1 << MLX5E_BUFFER_CELL_SHIFT);
1245
+
1246
+	if (mlx5_core_access_reg(mdev, in, sizeof(in), out, sizeof(out),
1247
+				 MLX5_REG_SBCAM, 0, 0))
1248
+		return (1 << MLX5E_BUFFER_CELL_SHIFT);
1249
+
1250
+	return MLX5_GET(sbcam_reg, out, cap_cell_size);
11831251 }
11841252 
11851253 void mlx5e_dcbnl_initialize(struct mlx5e_priv *priv)
....@@ -1199,6 +1267,7 @@
11991267 	if (priv->dcbx.mode == MLX5E_DCBX_PARAM_VER_OPER_HOST)
12001268 		priv->dcbx.cap |= DCB_CAP_DCBX_HOST;
12011269 
1270
+	priv->dcbx.port_buff_cell_sz = mlx5e_query_port_buffers_cell_size(priv);
12021271 	priv->dcbx.manual_buffer = false;
12031272 	priv->dcbx.cable_len = MLX5E_DEFAULT_CABLE_LEN;
12041273