From bd40e9d6d5386d08ae1e54f28444f3e98c23485c Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Tue, 15 Dec 2015 16:03:36 +0100 Subject: [PATCH] mlxsw: spectrum: Allocate active VLANs only for port netdevs When adding support for bridges between VLAN interfaces, we'll introduce a new entity called a vPort, which is a represntation of the VLAN interface in the hardware. The main difference between a vPort and a physical port is that several FIDs can be bound to the latter, whereas only one (called a vFID) can be bound to the first. Therefore, it makes sense to use the same struct to represent the two, but to only allocate the 'active_vlans' bitmap in case of a physical port. Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 10 ++++++++++ drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 2 +- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 322ed54..6bacdcf5 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -1245,6 +1245,7 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port) struct mlxsw_sp_port *mlxsw_sp_port; struct net_device *dev; bool usable; + size_t bytes; int err; dev = alloc_etherdev(sizeof(struct mlxsw_sp_port)); @@ -1258,6 +1259,12 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port) mlxsw_sp_port->learning_sync = 1; mlxsw_sp_port->uc_flood = 1; mlxsw_sp_port->pvid = 1; + bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE); + mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL); + if (!mlxsw_sp_port->active_vlans) { + err = -ENOMEM; + goto err_port_active_vlans_alloc; + } mlxsw_sp_port->pcpu_stats = netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats); @@ -1359,6 +1366,8 @@ err_port_module_check: err_dev_addr_init: free_percpu(mlxsw_sp_port->pcpu_stats); err_alloc_stats: + kfree(mlxsw_sp_port->active_vlans); +err_port_active_vlans_alloc: free_netdev(dev); return err; } @@ -1381,6 +1390,7 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port) unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */ mlxsw_sp_port_switchdev_fini(mlxsw_sp_port); free_percpu(mlxsw_sp_port->pcpu_stats); + kfree(mlxsw_sp_port->active_vlans); free_netdev(mlxsw_sp_port->dev); } diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index 48be5a6..608be6e 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -103,7 +103,7 @@ struct mlxsw_sp_port { u16 pvid; u16 lag_id; /* 802.1Q bridge VLANs */ - unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; + unsigned long *active_vlans; /* VLAN interfaces */ unsigned long active_vfids[BITS_TO_LONGS(VLAN_N_VID)]; u16 nr_vfids; -- 2.7.4