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net: dsa: make the STP state function return void

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The DSA layer doesn't care about the return code of the port_stp_update
routine, so make it void in the layer and the DSA drivers.

Replace the useless dsa_slave_stp_update function with a
dsa_slave_stp_state function used to reply to the switchdev
SWITCHDEV_ATTR_ID_PORT_STP_STATE attribute.

In the meantime, rename port_stp_update to port_stp_state_set to
explicit the state change.

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 2016-04-06 11:55:03 -04:00 committed by David S. Miller
parent f453939c1a
commit 43c44a9f65
8 changed files with 29 additions and 37 deletions
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2
Documentation/networking/dsa/dsa.txt
View File

@ -533,7 +533,7 @@ Bridge layer
out at the switch hardware for the switch to (re) learn MAC addresses behind
this port.
- port_stp_update: bridge layer function invoked when a given switch port STP
- port_stp_state_set: bridge layer function invoked when a given switch port STP
state is computed by the bridge layer and should be propagated to switch
hardware to forward/block/learn traffic. The switch driver is responsible for
computing a STP state change based on current and asked parameters and perform

16
drivers/net/dsa/bcm_sf2.c
View File

@ -545,12 +545,11 @@ static void bcm_sf2_sw_br_leave(struct dsa_switch *ds, int port)
priv->port_sts[port].bridge_dev = NULL;
}
static int bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
u8 state)
static void bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
u8 state)
{
struct bcm_sf2_priv *priv = ds_to_priv(ds);
u8 hw_state, cur_hw_state;
int ret = 0;
u32 reg;
reg = core_readl(priv, CORE_G_PCTL_PORT(port));
@ -574,7 +573,7 @@ static int bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
break;
default:
pr_err("%s: invalid STP state: %d\n", __func__, state);
return -EINVAL;
return;
}
/* Fast-age ARL entries if we are moving a port from Learning or
@ -584,10 +583,9 @@ static int bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
if (cur_hw_state != hw_state) {
if (cur_hw_state >= G_MISTP_LEARN_STATE &&
hw_state <= G_MISTP_LISTEN_STATE) {
ret = bcm_sf2_sw_fast_age_port(ds, port);
if (ret) {
if (bcm_sf2_sw_fast_age_port(ds, port)) {
pr_err("%s: fast-ageing failed\n", __func__);
return ret;
return;
}
}
}
@ -596,8 +594,6 @@ static int bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
reg &= ~(G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT);
reg |= hw_state;
core_writel(priv, reg, CORE_G_PCTL_PORT(port));
return 0;
}
/* Address Resolution Logic routines */
@ -1387,7 +1383,7 @@ static struct dsa_switch_driver bcm_sf2_switch_driver = {
.set_eee = bcm_sf2_sw_set_eee,
.port_bridge_join = bcm_sf2_sw_br_join,
.port_bridge_leave = bcm_sf2_sw_br_leave,
.port_stp_update = bcm_sf2_sw_br_set_stp_state,
.port_stp_state_set = bcm_sf2_sw_br_set_stp_state,
.port_fdb_prepare = bcm_sf2_sw_fdb_prepare,
.port_fdb_add = bcm_sf2_sw_fdb_add,
.port_fdb_del = bcm_sf2_sw_fdb_del,

2
drivers/net/dsa/mv88e6171.c
View File

@ -105,7 +105,7 @@ struct dsa_switch_driver mv88e6171_switch_driver = {
.get_regs = mv88e6xxx_get_regs,
.port_bridge_join = mv88e6xxx_port_bridge_join,
.port_bridge_leave = mv88e6xxx_port_bridge_leave,
.port_stp_update = mv88e6xxx_port_stp_update,
.port_stp_state_set = mv88e6xxx_port_stp_state_set,
.port_vlan_filtering = mv88e6xxx_port_vlan_filtering,
.port_vlan_prepare = mv88e6xxx_port_vlan_prepare,
.port_vlan_add = mv88e6xxx_port_vlan_add,

2
drivers/net/dsa/mv88e6352.c
View File

@ -326,7 +326,7 @@ struct dsa_switch_driver mv88e6352_switch_driver = {
.get_regs = mv88e6xxx_get_regs,
.port_bridge_join = mv88e6xxx_port_bridge_join,
.port_bridge_leave = mv88e6xxx_port_bridge_leave,
.port_stp_update = mv88e6xxx_port_stp_update,
.port_stp_state_set = mv88e6xxx_port_stp_state_set,
.port_vlan_filtering = mv88e6xxx_port_vlan_filtering,
.port_vlan_prepare = mv88e6xxx_port_vlan_prepare,
.port_vlan_add = mv88e6xxx_port_vlan_add,

6
drivers/net/dsa/mv88e6xxx.c
View File

@ -1193,7 +1193,7 @@ static int _mv88e6xxx_port_based_vlan_map(struct dsa_switch *ds, int port)
return _mv88e6xxx_reg_write(ds, REG_PORT(port), PORT_BASE_VLAN, reg);
}
int mv88e6xxx_port_stp_update(struct dsa_switch *ds, int port, u8 state)
void mv88e6xxx_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int stp_state;
@ -1215,14 +1215,12 @@ int mv88e6xxx_port_stp_update(struct dsa_switch *ds, int port, u8 state)
break;
}
/* mv88e6xxx_port_stp_update may be called with softirqs disabled,
/* mv88e6xxx_port_stp_state_set may be called with softirqs disabled,
* so we can not update the port state directly but need to schedule it.
*/
ps->ports[port].state = stp_state;
set_bit(port, ps->port_state_update_mask);
schedule_work(&ps->bridge_work);
return 0;
}
static int _mv88e6xxx_port_pvid(struct dsa_switch *ds, int port, u16 *new,

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

@ -497,7 +497,7 @@ int mv88e6xxx_set_eee(struct dsa_switch *ds, int port,
int mv88e6xxx_port_bridge_join(struct dsa_switch *ds, int port,
struct net_device *bridge);
void mv88e6xxx_port_bridge_leave(struct dsa_switch *ds, int port);
int mv88e6xxx_port_stp_update(struct dsa_switch *ds, int port, u8 state);
void mv88e6xxx_port_stp_state_set(struct dsa_switch *ds, int port, u8 state);
int mv88e6xxx_port_vlan_filtering(struct dsa_switch *ds, int port,
bool vlan_filtering);
int mv88e6xxx_port_vlan_prepare(struct dsa_switch *ds, int port,

4
include/net/dsa.h
View File

@ -299,8 +299,8 @@ struct dsa_switch_driver {
int (*port_bridge_join)(struct dsa_switch *ds, int port,
struct net_device *bridge);
void (*port_bridge_leave)(struct dsa_switch *ds, int port);
int (*port_stp_update)(struct dsa_switch *ds, int port,
u8 state);
void (*port_stp_state_set)(struct dsa_switch *ds, int port,
u8 state);
/*
* VLAN support

32
net/dsa/slave.c
View File

@ -104,8 +104,8 @@ static int dsa_slave_open(struct net_device *dev)
goto clear_promisc;
}
if (ds->drv->port_stp_update)
ds->drv->port_stp_update(ds, p->port, stp_state);
if (ds->drv->port_stp_state_set)
ds->drv->port_stp_state_set(ds, p->port, stp_state);
if (p->phy)
phy_start(p->phy);
@ -147,8 +147,8 @@ static int dsa_slave_close(struct net_device *dev)
if (ds->drv->port_disable)
ds->drv->port_disable(ds, p->port, p->phy);
if (ds->drv->port_stp_update)
ds->drv->port_stp_update(ds, p->port, BR_STATE_DISABLED);
if (ds->drv->port_stp_state_set)
ds->drv->port_stp_state_set(ds, p->port, BR_STATE_DISABLED);
return 0;
}
@ -305,16 +305,19 @@ static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return -EOPNOTSUPP;
}
static int dsa_slave_stp_update(struct net_device *dev, u8 state)
static int dsa_slave_stp_state_set(struct net_device *dev,
const struct switchdev_attr *attr,
struct switchdev_trans *trans)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
int ret = -EOPNOTSUPP;
if (ds->drv->port_stp_update)
ret = ds->drv->port_stp_update(ds, p->port, state);
if (switchdev_trans_ph_prepare(trans))
return ds->drv->port_stp_state_set ? 0 : -EOPNOTSUPP;
return ret;
ds->drv->port_stp_state_set(ds, p->port, attr->u.stp_state);
return 0;
}
static int dsa_slave_vlan_filtering(struct net_device *dev,
@ -339,17 +342,11 @@ static int dsa_slave_port_attr_set(struct net_device *dev,
const struct switchdev_attr *attr,
struct switchdev_trans *trans)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
int ret;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
if (switchdev_trans_ph_prepare(trans))
ret = ds->drv->port_stp_update ? 0 : -EOPNOTSUPP;
else
ret = ds->drv->port_stp_update(ds, p->port,
attr->u.stp_state);
ret = dsa_slave_stp_state_set(dev, attr, trans);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
ret = dsa_slave_vlan_filtering(dev, attr, trans);
@ -468,7 +465,8 @@ static void dsa_slave_bridge_port_leave(struct net_device *dev)
/* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
* so allow it to be in BR_STATE_FORWARDING to be kept functional
*/
dsa_slave_stp_update(dev, BR_STATE_FORWARDING);
if (ds->drv->port_stp_state_set)
ds->drv->port_stp_state_set(ds, p->port, BR_STATE_FORWARDING);
}
static int dsa_slave_port_attr_get(struct net_device *dev,