mlxsw: spectrum: Use per-FID struct for the VLAN-aware bridge

In a very similar way to the vFIDs, make the first 4K FIDs - used in the
VLAN-aware bridge - use the new FID struct.

Upon first use of the FID by any of the ports do the following:

1) Create the FID
2) Setup a matching flooding entry
3) Create a mapping for the FID

Unlike vFIDs, upon creation of a FID we always create a global
VID-to-FID mapping, so that ports without upper vPorts can use it
instead of creating an explicit {Port, VID} to FID mapping.

When a port leaves a FID the reverse is performed. Whenever the FID's
reference count reaches zero the FID is deleted along with the global
mapping.

The per-FID struct will later allow us to configure L3 interfaces on top
of the VLAN-aware bridge.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-06-20 23:04:15 +02:00 committed by David S. Miller
parent 37286d2571
commit 14d39461b3
3 changed files with 195 additions and 125 deletions

View File

@ -2396,6 +2396,7 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
mlxsw_sp->core = mlxsw_core;
mlxsw_sp->bus_info = mlxsw_bus_info;
INIT_LIST_HEAD(&mlxsw_sp->fids);
INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
@ -2472,6 +2473,7 @@ static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
mlxsw_sp_traps_fini(mlxsw_sp);
mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
mlxsw_sp_ports_remove(mlxsw_sp);
WARN_ON(!list_empty(&mlxsw_sp->fids));
}
static struct mlxsw_config_profile mlxsw_sp_config_profile = {

View File

@ -165,7 +165,7 @@ struct mlxsw_sp {
struct list_head list;
DECLARE_BITMAP(mapped, MLXSW_SP_MID_MAX);
} br_mids;
DECLARE_BITMAP(active_fids, VLAN_N_VID);
struct list_head fids; /* VLAN-aware bridge FIDs */
struct mlxsw_sp_port **ports;
struct mlxsw_core *core;
const struct mlxsw_bus_info *bus_info;

View File

@ -384,6 +384,192 @@ static int mlxsw_sp_port_attr_set(struct net_device *dev,
return err;
}
static struct mlxsw_sp_fid *mlxsw_sp_fid_find(struct mlxsw_sp *mlxsw_sp,
u16 fid)
{
struct mlxsw_sp_fid *f;
list_for_each_entry(f, &mlxsw_sp->fids, list)
if (f->fid == fid)
return f;
return NULL;
}
static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
{
char sfmr_pl[MLXSW_REG_SFMR_LEN];
mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}
static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
{
enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
char svfa_pl[MLXSW_REG_SVFA_LEN];
mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
}
static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
{
struct mlxsw_sp_fid *f;
f = kzalloc(sizeof(*f), GFP_KERNEL);
if (!f)
return NULL;
f->fid = fid;
return f;
}
static struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp,
u16 fid)
{
struct mlxsw_sp_fid *f;
int err;
err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
if (err)
return ERR_PTR(err);
/* Although all the ports member in the FID might be using a
* {Port, VID} to FID mapping, we create a global VID-to-FID
* mapping. This allows a port to transition to VLAN mode,
* knowing the global mapping exists.
*/
err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
if (err)
goto err_fid_map;
f = mlxsw_sp_fid_alloc(fid);
if (!f) {
err = -ENOMEM;
goto err_allocate_fid;
}
list_add(&f->list, &mlxsw_sp->fids);
return f;
err_allocate_fid:
mlxsw_sp_fid_map(mlxsw_sp, fid, false);
err_fid_map:
mlxsw_sp_fid_op(mlxsw_sp, fid, false);
return ERR_PTR(err);
}
static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fid *f)
{
u16 fid = f->fid;
list_del(&f->list);
kfree(f);
mlxsw_sp_fid_op(mlxsw_sp, fid, false);
}
static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid)
{
struct mlxsw_sp_fid *f;
f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
if (!f) {
f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
if (IS_ERR(f))
return PTR_ERR(f);
}
f->ref_count++;
return 0;
}
static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid)
{
struct mlxsw_sp_fid *f;
f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
if (WARN_ON(!f))
return;
if (--f->ref_count == 0)
mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
}
static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
bool valid)
{
enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
/* If port doesn't have vPorts, then it can use the global
* VID-to-FID mapping.
*/
if (list_empty(&mlxsw_sp_port->vports_list))
return 0;
return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
}
static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid_begin, u16 fid_end)
{
int fid, err;
for (fid = fid_begin; fid <= fid_end; fid++) {
err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
if (err)
goto err_port_fid_join;
}
err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
true, false);
if (err)
goto err_port_flood_set;
for (fid = fid_begin; fid <= fid_end; fid++) {
err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
if (err)
goto err_port_fid_map;
}
return 0;
err_port_fid_map:
for (fid--; fid >= fid_begin; fid--)
mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
__mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
false);
err_port_flood_set:
fid = fid_end;
err_port_fid_join:
for (fid--; fid >= fid_begin; fid--)
__mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
return err;
}
static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid_begin, u16 fid_end)
{
int fid;
for (fid = fid_begin; fid <= fid_end; fid++)
mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
__mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
false);
for (fid = fid_begin; fid <= fid_end; fid++)
__mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
}
static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid)
{
@ -441,55 +627,6 @@ err_port_allow_untagged_set:
return err;
}
static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
{
char sfmr_pl[MLXSW_REG_SFMR_LEN];
int err;
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
if (err)
return err;
set_bit(fid, mlxsw_sp->active_fids);
return 0;
}
static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
{
char sfmr_pl[MLXSW_REG_SFMR_LEN];
clear_bit(fid, mlxsw_sp->active_fids);
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
fid, fid);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}
static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
{
enum mlxsw_reg_svfa_mt mt;
if (!list_empty(&mlxsw_sp_port->vports_list))
mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
else
mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
}
static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
{
enum mlxsw_reg_svfa_mt mt;
if (list_empty(&mlxsw_sp_port->vports_list))
return 0;
mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
}
static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
u16 vid_end)
{
@ -534,10 +671,8 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid_begin, u16 vid_end,
bool flag_untagged, bool flag_pvid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *dev = mlxsw_sp_port->dev;
u16 vid, last_visited_vid, old_pvid;
enum mlxsw_reg_svfa_mt mt;
u16 vid, old_pvid;
int err;
/* In case this is invoked with BRIDGE_FLAGS_SELF and port is
@ -547,44 +682,10 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
if (!mlxsw_sp_port->bridged)
return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
for (vid = vid_begin; vid <= vid_end; vid++) {
if (!test_bit(vid, mlxsw_sp->active_fids)) {
err = mlxsw_sp_fid_create(mlxsw_sp, vid);
if (err) {
netdev_err(dev, "Failed to create FID=%d\n",
vid);
return err;
}
/* When creating a FID, we set a VID to FID mapping
* regardless of the port's mode.
*/
mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
true, vid, vid);
if (err) {
netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
vid);
goto err_port_vid_to_fid_set;
}
}
}
/* Set FID mapping according to port's mode */
for (vid = vid_begin; vid <= vid_end; vid++) {
err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
if (err) {
netdev_err(dev, "Failed to map FID=%d", vid);
last_visited_vid = --vid;
goto err_port_fid_map;
}
}
err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
true, false);
err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
if (err) {
netdev_err(dev, "Failed to configure flooding\n");
goto err_port_flood_set;
netdev_err(dev, "Failed to join FIDs\n");
return err;
}
err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
@ -629,10 +730,6 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
return 0;
err_port_vid_to_fid_set:
mlxsw_sp_fid_destroy(mlxsw_sp, vid);
return err;
err_port_stp_state_set:
for (vid = vid_begin; vid <= vid_end; vid++)
clear_bit(vid, mlxsw_sp_port->active_vlans);
@ -642,13 +739,7 @@ err_port_pvid_set:
__mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
false);
err_port_vlans_set:
__mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
false);
err_port_flood_set:
last_visited_vid = vid_end;
err_port_fid_map:
for (vid = last_visited_vid; vid >= vid_begin; vid--)
mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
return err;
}
@ -971,21 +1062,7 @@ static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
}
}
err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
false, false);
if (err) {
netdev_err(dev, "Failed to clear flooding\n");
return err;
}
for (vid = vid_begin; vid <= vid_end; vid++) {
/* Remove FID mapping in case of Virtual mode */
err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
if (err) {
netdev_err(dev, "Failed to unmap FID=%d", vid);
return err;
}
}
mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
out:
/* Changing activity bits only if HW operation succeded */
@ -1490,14 +1567,6 @@ static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
}
static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
{
u16 fid;
for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
mlxsw_sp_fid_destroy(mlxsw_sp, fid);
}
int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
{
return mlxsw_sp_fdb_init(mlxsw_sp);
@ -1506,7 +1575,6 @@ int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
{
mlxsw_sp_fdb_fini(mlxsw_sp);
mlxsw_sp_fids_fini(mlxsw_sp);
}
int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)