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Date: Fri, 26 Feb 2016 13:16:04 -0500
From: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
"David S. Miller" <davem@...emloft.net>,
Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
Guenter Roeck <linux@...ck-us.net>,
Neil Armstrong <narmstrong@...libre.com>,
Sascha Hauer <s.hauer@...gutronix.de>,
Russell King <rmk+kernel@....linux.org.uk>,
Kevin Smith <kevin.smith@...csyscorp.com>,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH net-next 5/9] net: dsa: mv88e6xxx: assign default FDB to ports
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@...oirfairelinux.com>
---
drivers/net/dsa/mv88e6xxx.c | 96 +++++++++++++++++++++++++++++++++++++++++----
drivers/net/dsa/mv88e6xxx.h | 2 +
2 files changed, 91 insertions(+), 7 deletions(-)
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index b4b2f05..0f06488 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -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);
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index 9df331e..85a4166 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -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
--
2.7.1
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