diff options
Diffstat (limited to 'drivers/net/mlx4/port.c')
| -rw-r--r-- | drivers/net/mlx4/port.c | 165 |
1 files changed, 151 insertions, 14 deletions
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) { |