X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=drivers%2Fnet%2Fmlx4%2Fport.c;h=eca7d8596f8753c1f4f6f4fd6fce5b2fab376e21;hp=451339559bdc16bd64e07e124850f5280ef02b3d;hb=16c29dafcc86024048f1dbb8349d31cb22c7c55a;hpb=eca0bdd326d2cf9127bbb6ac602bfbcbf169c10d

diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c
index 451339559bdc..eca7d8596f87 100644
--- a/drivers/net/mlx4/port.c
+++ b/drivers/net/mlx4/port.c
@@ -90,12 +90,79 @@ static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
 	return err;
 }
 
-int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index)
+static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port,
+			     u64 mac, int *qpn, u8 reserve)
 {
-	struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
+	struct mlx4_qp qp;
+	u8 gid[16] = {0};
+	int err;
+
+	if (reserve) {
+		err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
+		if (err) {
+			mlx4_err(dev, "Failed to reserve qp for mac registration\n");
+			return err;
+		}
+	}
+	qp.qpn = *qpn;
+
+	mac &= 0xffffffffffffULL;
+	mac = cpu_to_be64(mac << 16);
+	memcpy(&gid[10], &mac, ETH_ALEN);
+	gid[5] = port;
+	gid[7] = MLX4_UC_STEER << 1;
+
+	err = mlx4_qp_attach_common(dev, &qp, gid, 0,
+				    MLX4_PROT_ETH, MLX4_UC_STEER);
+	if (err && reserve)
+		mlx4_qp_release_range(dev, *qpn, 1);
+
+	return err;
+}
+
+static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
+				  u64 mac, int qpn, u8 free)
+{
+	struct mlx4_qp qp;
+	u8 gid[16] = {0};
+
+	qp.qpn = qpn;
+	mac &= 0xffffffffffffULL;
+	mac = cpu_to_be64(mac << 16);
+	memcpy(&gid[10], &mac, ETH_ALEN);
+	gid[5] = port;
+	gid[7] = MLX4_UC_STEER << 1;
+
+	mlx4_qp_detach_common(dev, &qp, gid, MLX4_PROT_ETH, MLX4_UC_STEER);
+	if (free)
+		mlx4_qp_release_range(dev, qpn, 1);
+}
+
+int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *qpn, u8 wrap)
+{
+	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+	struct mlx4_mac_table *table = &info->mac_table;
+	struct mlx4_mac_entry *entry;
 	int i, err = 0;
 	int free = -1;
 
+	if (dev->caps.vep_uc_steering) {
+		err = mlx4_uc_steer_add(dev, port, mac, qpn, 1);
+		if (!err) {
+			entry = kmalloc(sizeof *entry, GFP_KERNEL);
+			if (!entry) {
+				mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
+				return -ENOMEM;
+			}
+			entry->mac = mac;
+			err = radix_tree_insert(&info->mac_tree, *qpn, entry);
+			if (err) {
+				mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
+				return err;
+			}
+		} else
+			return err;
+	}
 	mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);
 	mutex_lock(&table->mutex);
 	for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
@@ -106,7 +173,6 @@ int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index)
 
 		if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
 			/* MAC already registered, increase refernce count */
-			*index = i;
 			++table->refs[i];
 			goto out;
 		}
@@ -137,7 +203,8 @@ int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index)
 		goto out;
 	}
 
-	*index = free;
+	if (!dev->caps.vep_uc_steering)
+		*qpn = info->base_qpn + free;
 	++table->total;
 out:
 	mutex_unlock(&table->mutex);
@@ -145,20 +212,52 @@ out:
 }
 EXPORT_SYMBOL_GPL(mlx4_register_mac);
 
-void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index)
+static int validate_index(struct mlx4_dev *dev,
+			  struct mlx4_mac_table *table, int index)
 {
-	struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
+	int err = 0;
 
-	mutex_lock(&table->mutex);
-	if (!table->refs[index]) {
-		mlx4_warn(dev, "No MAC entry for index %d\n", index);
-		goto out;
+	if (index < 0 || index >= table->max || !table->entries[index]) {
+		mlx4_warn(dev, "No valid Mac entry for the given index\n");
+		err = -EINVAL;
 	}
-	if (--table->refs[index]) {
-		mlx4_warn(dev, "Have more references for index %d,"
-			  "no need to modify MAC table\n", index);
-		goto out;
+	return err;
+}
+
+static int find_index(struct mlx4_dev *dev,
+		      struct mlx4_mac_table *table, u64 mac)
+{
+	int i;
+	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
+		if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
+			return i;
 	}
+	/* Mac not found */
+	return -EINVAL;
+}
+
+void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn)
+{
+	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+	struct mlx4_mac_table *table = &info->mac_table;
+	int index = qpn - info->base_qpn;
+	struct mlx4_mac_entry *entry;
+
+	if (dev->caps.vep_uc_steering) {
+		entry = radix_tree_lookup(&info->mac_tree, qpn);
+		if (entry) {
+			mlx4_uc_steer_release(dev, port, entry->mac, qpn, 1);
+			radix_tree_delete(&info->mac_tree, qpn);
+			index = find_index(dev, table, entry->mac);
+			kfree(entry);
+		}
+	}
+
+	mutex_lock(&table->mutex);
+
+	if (validate_index(dev, table, index))
+		goto out;
+
 	table->entries[index] = 0;
 	mlx4_set_port_mac_table(dev, port, table->entries);
 	--table->total;
@@ -167,6 +266,44 @@ out:
 }
 EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
 
+int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac, u8 wrap)
+{
+	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+	struct mlx4_mac_table *table = &info->mac_table;
+	int index = qpn - info->base_qpn;
+	struct mlx4_mac_entry *entry;
+	int err;
+
+	if (dev->caps.vep_uc_steering) {
+		entry = radix_tree_lookup(&info->mac_tree, qpn);
+		if (!entry)
+			return -EINVAL;
+		index = find_index(dev, table, entry->mac);
+		mlx4_uc_steer_release(dev, port, entry->mac, qpn, 0);
+		entry->mac = new_mac;
+		err = mlx4_uc_steer_add(dev, port, entry->mac, &qpn, 0);
+		if (err || index < 0)
+			return err;
+	}
+
+	mutex_lock(&table->mutex);
+
+	err = validate_index(dev, table, index);
+	if (err)
+		goto out;
+
+	table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
+
+	err = mlx4_set_port_mac_table(dev, port, table->entries);
+	if (unlikely(err)) {
+		mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) new_mac);
+		table->entries[index] = 0;
+	}
+out:
+	mutex_unlock(&table->mutex);
+	return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_replace_mac);
 static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
 				    __be32 *entries)
 {