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net: dsa: mv88e6xxx: assign default FDB to ports

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Restore per-port FDB. Assign them on setup, allow adding and deleting
addresses into them, and dump them.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2016-02-26 13:16:04 -05:00 committed by David S. Miller
parent 3285f9e869
commit 2db9ce1fd9
2 changed files with 91 additions and 7 deletions
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96
drivers/net/dsa/mv88e6xxx.c
View File

@ -1458,14 +1458,82 @@ loadpurge:
return _mv88e6xxx_vtu_cmd(ds, GLOBAL_VTU_OP_STU_LOAD_PURGE);
}
static int _mv88e6xxx_port_fid(struct dsa_switch *ds, int port, u16 *new,
u16 *old)
{
u16 fid;
int ret;
/* Port's default FID bits 3:0 are located in reg 0x06, offset 12 */
ret = _mv88e6xxx_reg_read(ds, REG_PORT(port), PORT_BASE_VLAN);
if (ret < 0)
return ret;
fid = (ret & PORT_BASE_VLAN_FID_3_0_MASK) >> 12;
if (new) {
ret &= ~PORT_BASE_VLAN_FID_3_0_MASK;
ret |= (*new << 12) & PORT_BASE_VLAN_FID_3_0_MASK;
ret = _mv88e6xxx_reg_write(ds, REG_PORT(port), PORT_BASE_VLAN,
ret);
if (ret < 0)
return ret;
}
/* Port's default FID bits 11:4 are located in reg 0x05, offset 0 */
ret = _mv88e6xxx_reg_read(ds, REG_PORT(port), PORT_CONTROL_1);
if (ret < 0)
return ret;
fid |= (ret & PORT_CONTROL_1_FID_11_4_MASK) << 4;
if (new) {
ret &= ~PORT_CONTROL_1_FID_11_4_MASK;
ret |= (*new >> 4) & PORT_CONTROL_1_FID_11_4_MASK;
ret = _mv88e6xxx_reg_write(ds, REG_PORT(port), PORT_CONTROL_1,
ret);
if (ret < 0)
return ret;
netdev_dbg(ds->ports[port], "FID %d (was %d)\n", *new, fid);
}
if (old)
*old = fid;
return 0;
}
static int _mv88e6xxx_port_fid_get(struct dsa_switch *ds, int port, u16 *fid)
{
return _mv88e6xxx_port_fid(ds, port, NULL, fid);
}
static int _mv88e6xxx_port_fid_set(struct dsa_switch *ds, int port, u16 fid)
{
return _mv88e6xxx_port_fid(ds, port, &fid, NULL);
}
static int _mv88e6xxx_fid_new(struct dsa_switch *ds, u16 *fid)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
DECLARE_BITMAP(fid_bitmap, MV88E6XXX_N_FID);
struct mv88e6xxx_vtu_stu_entry vlan;
int err;
int i, err;
bitmap_zero(fid_bitmap, MV88E6XXX_N_FID);
/* Set every FID bit used by the (un)bridged ports */
for (i = 0; i < ps->num_ports; ++i) {
err = _mv88e6xxx_port_fid_get(ds, i, fid);
if (err)
return err;
set_bit(*fid, fid_bitmap);
}
/* Set every FID bit used by the VLAN entries */
err = _mv88e6xxx_vtu_vid_write(ds, GLOBAL_VTU_VID_MASK);
if (err)
@ -1824,7 +1892,11 @@ static int _mv88e6xxx_port_fdb_load(struct dsa_switch *ds, int port,
struct mv88e6xxx_vtu_stu_entry vlan;
int err;
err = _mv88e6xxx_vtu_get(ds, vid, &vlan, false);
/* Null VLAN ID corresponds to the port private database */
if (vid == 0)
err = _mv88e6xxx_port_fid_get(ds, port, &vlan.fid);
else
err = _mv88e6xxx_vtu_get(ds, vid, &vlan, false);
if (err)
return err;
@ -1843,10 +1915,6 @@ int mv88e6xxx_port_fdb_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_fdb *fdb,
struct switchdev_trans *trans)
{
/* We don't use per-port FDB */
if (fdb->vid == 0)
return -EOPNOTSUPP;
/* We don't need any dynamic resource from the kernel (yet),
* so skip the prepare phase.
*/
@ -1982,10 +2050,20 @@ int mv88e6xxx_port_fdb_dump(struct dsa_switch *ds, int port,
struct mv88e6xxx_vtu_stu_entry vlan = {
.vid = GLOBAL_VTU_VID_MASK, /* all ones */
};
u16 fid;
int err;
mutex_lock(&ps->smi_mutex);
/* Dump port's default Filtering Information Database (VLAN ID 0) */
err = _mv88e6xxx_port_fid_get(ds, port, &fid);
if (err)
goto unlock;
err = _mv88e6xxx_port_fdb_dump_one(ds, fid, 0, port, fdb, cb);
if (err)
goto unlock;
/* Dump VLANs' Filtering Information Databases */
err = _mv88e6xxx_vtu_vid_write(ds, vlan.vid);
if (err)
@ -2286,9 +2364,13 @@ static int mv88e6xxx_setup_port(struct dsa_switch *ds, int port)
if (ret)
goto abort;
/* Port based VLAN map: do not give each port its own address
/* Port based VLAN map: give each port its own address
* database, and allow every port to egress frames on all other ports.
*/
ret = _mv88e6xxx_port_fid_set(ds, port, port + 1);
if (ret)
goto abort;
reg = BIT(ps->num_ports) - 1; /* all ports */
reg &= ~BIT(port); /* except itself */
ret = _mv88e6xxx_port_vlan_map_set(ds, port, reg);

2
drivers/net/dsa/mv88e6xxx.h
View File

@ -133,7 +133,9 @@
#define PORT_CONTROL_STATE_LEARNING 0x02
#define PORT_CONTROL_STATE_FORWARDING 0x03
#define PORT_CONTROL_1 0x05
#define PORT_CONTROL_1_FID_11_4_MASK (0xff << 0)
#define PORT_BASE_VLAN 0x06
#define PORT_BASE_VLAN_FID_3_0_MASK (0xf << 12)
#define PORT_DEFAULT_VLAN 0x07
#define PORT_DEFAULT_VLAN_MASK 0xfff
#define PORT_CONTROL_2 0x08