mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
da0efa8888
A follow-up patch enables emitting VLAN notifications for the bridge CPU port in addition to the existing slave port notifications. These notifications have orig_dev set to the bridge in question. Because there's no specific support for these VLANs, just ignore the notifications to maintain the current behavior. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
449 lines
9.9 KiB
C
449 lines
9.9 KiB
C
/*
|
|
* Handling of a single switch port
|
|
*
|
|
* Copyright (c) 2017 Savoir-faire Linux Inc.
|
|
* Vivien Didelot <vivien.didelot@savoirfairelinux.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/if_bridge.h>
|
|
#include <linux/notifier.h>
|
|
#include <linux/of_mdio.h>
|
|
#include <linux/of_net.h>
|
|
|
|
#include "dsa_priv.h"
|
|
|
|
static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v)
|
|
{
|
|
struct raw_notifier_head *nh = &dp->ds->dst->nh;
|
|
int err;
|
|
|
|
err = raw_notifier_call_chain(nh, e, v);
|
|
|
|
return notifier_to_errno(err);
|
|
}
|
|
|
|
int dsa_port_set_state(struct dsa_port *dp, u8 state,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
|
|
if (switchdev_trans_ph_prepare(trans))
|
|
return ds->ops->port_stp_state_set ? 0 : -EOPNOTSUPP;
|
|
|
|
if (ds->ops->port_stp_state_set)
|
|
ds->ops->port_stp_state_set(ds, port, state);
|
|
|
|
if (ds->ops->port_fast_age) {
|
|
/* Fast age FDB entries or flush appropriate forwarding database
|
|
* for the given port, if we are moving it from Learning or
|
|
* Forwarding state, to Disabled or Blocking or Listening state.
|
|
*/
|
|
|
|
if ((dp->stp_state == BR_STATE_LEARNING ||
|
|
dp->stp_state == BR_STATE_FORWARDING) &&
|
|
(state == BR_STATE_DISABLED ||
|
|
state == BR_STATE_BLOCKING ||
|
|
state == BR_STATE_LISTENING))
|
|
ds->ops->port_fast_age(ds, port);
|
|
}
|
|
|
|
dp->stp_state = state;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dsa_port_set_state_now(struct dsa_port *dp, u8 state)
|
|
{
|
|
int err;
|
|
|
|
err = dsa_port_set_state(dp, state, NULL);
|
|
if (err)
|
|
pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
|
|
}
|
|
|
|
int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
|
|
{
|
|
u8 stp_state = dp->bridge_dev ? BR_STATE_BLOCKING : BR_STATE_FORWARDING;
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
int err;
|
|
|
|
if (ds->ops->port_enable) {
|
|
err = ds->ops->port_enable(ds, port, phy);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
dsa_port_set_state_now(dp, stp_state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void dsa_port_disable(struct dsa_port *dp, struct phy_device *phy)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
|
|
dsa_port_set_state_now(dp, BR_STATE_DISABLED);
|
|
|
|
if (ds->ops->port_disable)
|
|
ds->ops->port_disable(ds, port, phy);
|
|
}
|
|
|
|
int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br)
|
|
{
|
|
struct dsa_notifier_bridge_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.br = br,
|
|
};
|
|
int err;
|
|
|
|
/* Here the port is already bridged. Reflect the current configuration
|
|
* so that drivers can program their chips accordingly.
|
|
*/
|
|
dp->bridge_dev = br;
|
|
|
|
err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_JOIN, &info);
|
|
|
|
/* The bridging is rolled back on error */
|
|
if (err)
|
|
dp->bridge_dev = NULL;
|
|
|
|
return err;
|
|
}
|
|
|
|
void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
|
|
{
|
|
struct dsa_notifier_bridge_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.br = br,
|
|
};
|
|
int err;
|
|
|
|
/* Here the port is already unbridged. Reflect the current configuration
|
|
* so that drivers can program their chips accordingly.
|
|
*/
|
|
dp->bridge_dev = NULL;
|
|
|
|
err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_LEAVE, &info);
|
|
if (err)
|
|
pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n");
|
|
|
|
/* 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_port_set_state_now(dp, BR_STATE_FORWARDING);
|
|
}
|
|
|
|
int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
/* bridge skips -EOPNOTSUPP, so skip the prepare phase */
|
|
if (switchdev_trans_ph_prepare(trans))
|
|
return 0;
|
|
|
|
if (ds->ops->port_vlan_filtering)
|
|
return ds->ops->port_vlan_filtering(ds, dp->index,
|
|
vlan_filtering);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
|
|
unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
|
|
struct dsa_notifier_ageing_time_info info = {
|
|
.ageing_time = ageing_time,
|
|
.trans = trans,
|
|
};
|
|
|
|
if (switchdev_trans_ph_prepare(trans))
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
|
|
|
|
dp->ageing_time = ageing_time;
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
|
|
}
|
|
|
|
int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
|
|
u16 vid)
|
|
{
|
|
struct dsa_notifier_fdb_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.addr = addr,
|
|
.vid = vid,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
|
|
}
|
|
|
|
int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
|
|
u16 vid)
|
|
{
|
|
struct dsa_notifier_fdb_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.addr = addr,
|
|
.vid = vid,
|
|
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
|
|
}
|
|
|
|
int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
|
|
if (!ds->ops->port_fdb_dump)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->port_fdb_dump(ds, port, cb, data);
|
|
}
|
|
|
|
int dsa_port_mdb_add(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct dsa_notifier_mdb_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.trans = trans,
|
|
.mdb = mdb,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
|
|
}
|
|
|
|
int dsa_port_mdb_del(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb)
|
|
{
|
|
struct dsa_notifier_mdb_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.mdb = mdb,
|
|
};
|
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
|
|
}
|
|
|
|
int dsa_port_vlan_add(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct dsa_notifier_vlan_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.trans = trans,
|
|
.vlan = vlan,
|
|
};
|
|
|
|
if (netif_is_bridge_master(vlan->obj.orig_dev))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (br_vlan_enabled(dp->bridge_dev))
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_port_vlan_del(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan)
|
|
{
|
|
struct dsa_notifier_vlan_info info = {
|
|
.sw_index = dp->ds->index,
|
|
.port = dp->index,
|
|
.vlan = vlan,
|
|
};
|
|
|
|
if (netif_is_bridge_master(vlan->obj.orig_dev))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (br_vlan_enabled(dp->bridge_dev))
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
|
|
{
|
|
struct device_node *phy_dn;
|
|
struct phy_device *phydev;
|
|
|
|
phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
|
|
if (!phy_dn)
|
|
return NULL;
|
|
|
|
phydev = of_phy_find_device(phy_dn);
|
|
if (!phydev) {
|
|
of_node_put(phy_dn);
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
}
|
|
|
|
return phydev;
|
|
}
|
|
|
|
static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable)
|
|
{
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct phy_device *phydev;
|
|
int port = dp->index;
|
|
int err = 0;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (!phydev)
|
|
return 0;
|
|
|
|
if (IS_ERR(phydev))
|
|
return PTR_ERR(phydev);
|
|
|
|
if (enable) {
|
|
err = genphy_config_init(phydev);
|
|
if (err < 0)
|
|
goto err_put_dev;
|
|
|
|
err = genphy_resume(phydev);
|
|
if (err < 0)
|
|
goto err_put_dev;
|
|
|
|
err = genphy_read_status(phydev);
|
|
if (err < 0)
|
|
goto err_put_dev;
|
|
} else {
|
|
err = genphy_suspend(phydev);
|
|
if (err < 0)
|
|
goto err_put_dev;
|
|
}
|
|
|
|
if (ds->ops->adjust_link)
|
|
ds->ops->adjust_link(ds, port, phydev);
|
|
|
|
dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));
|
|
|
|
err_put_dev:
|
|
put_device(&phydev->mdio.dev);
|
|
return err;
|
|
}
|
|
|
|
static int dsa_port_fixed_link_register_of(struct dsa_port *dp)
|
|
{
|
|
struct device_node *dn = dp->dn;
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct phy_device *phydev;
|
|
int port = dp->index;
|
|
int mode;
|
|
int err;
|
|
|
|
err = of_phy_register_fixed_link(dn);
|
|
if (err) {
|
|
dev_err(ds->dev,
|
|
"failed to register the fixed PHY of port %d\n",
|
|
port);
|
|
return err;
|
|
}
|
|
|
|
phydev = of_phy_find_device(dn);
|
|
|
|
mode = of_get_phy_mode(dn);
|
|
if (mode < 0)
|
|
mode = PHY_INTERFACE_MODE_NA;
|
|
phydev->interface = mode;
|
|
|
|
genphy_config_init(phydev);
|
|
genphy_read_status(phydev);
|
|
|
|
if (ds->ops->adjust_link)
|
|
ds->ops->adjust_link(ds, port, phydev);
|
|
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_port_link_register_of(struct dsa_port *dp)
|
|
{
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return dsa_port_fixed_link_register_of(dp);
|
|
else
|
|
return dsa_port_setup_phy_of(dp, true);
|
|
}
|
|
|
|
void dsa_port_link_unregister_of(struct dsa_port *dp)
|
|
{
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
of_phy_deregister_fixed_link(dp->dn);
|
|
else
|
|
dsa_port_setup_phy_of(dp, false);
|
|
}
|
|
|
|
int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data)
|
|
{
|
|
struct phy_device *phydev;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return ret;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (IS_ERR_OR_NULL(phydev))
|
|
return ret;
|
|
|
|
ret = phy_ethtool_get_strings(phydev, data);
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);
|
|
|
|
int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data)
|
|
{
|
|
struct phy_device *phydev;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return ret;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (IS_ERR_OR_NULL(phydev))
|
|
return ret;
|
|
|
|
ret = phy_ethtool_get_stats(phydev, NULL, data);
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);
|
|
|
|
int dsa_port_get_phy_sset_count(struct dsa_port *dp)
|
|
{
|
|
struct phy_device *phydev;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (of_phy_is_fixed_link(dp->dn))
|
|
return ret;
|
|
|
|
phydev = dsa_port_get_phy_device(dp);
|
|
if (IS_ERR_OR_NULL(phydev))
|
|
return ret;
|
|
|
|
ret = phy_ethtool_get_sset_count(phydev);
|
|
put_device(&phydev->mdio.dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);
|