#include <linux/if_bridge.h>
#include <linux/if_vlan.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <net/netevent.h>
#include <net/switchdev.h>
#include "prestera.h"
#include "prestera_hw.h"
#include "prestera_switchdev.h"
#define PRESTERA_VID_ALL (0xffff)
#define PRESTERA_DEFAULT_AGEING_TIME_MS 300000
#define PRESTERA_MAX_AGEING_TIME_MS 1000000000
#define PRESTERA_MIN_AGEING_TIME_MS 32000
struct prestera_fdb_event_work {
struct work_struct work;
struct switchdev_notifier_fdb_info fdb_info;
struct net_device *dev;
unsigned long event;
};
struct prestera_switchdev {
struct prestera_switch *sw;
struct list_head bridge_list;
bool bridge_8021q_exists;
struct notifier_block swdev_nb_blk;
struct notifier_block swdev_nb;
};
struct prestera_bridge {
struct list_head head;
struct net_device *dev;
struct prestera_switchdev *swdev;
struct list_head port_list;
struct list_head br_mdb_entry_list;
bool mrouter_exist;
bool vlan_enabled;
bool multicast_enabled;
u16 bridge_id;
};
struct prestera_bridge_port {
struct list_head head;
struct net_device *dev;
struct prestera_bridge *bridge;
struct list_head vlan_list;
struct list_head br_mdb_port_list;
refcount_t ref_count;
unsigned long flags;
bool mrouter;
u8 stp_state;
};
struct prestera_bridge_vlan {
struct list_head head;
struct list_head port_vlan_list;
u16 vid;
};
struct prestera_port_vlan {
struct list_head br_vlan_head;
struct list_head port_head;
struct prestera_port *port;
struct prestera_bridge_port *br_port;
u16 vid;
};
struct prestera_br_mdb_port {
struct prestera_bridge_port *br_port;
struct list_head br_mdb_port_node;
};
struct prestera_br_mdb_entry {
struct prestera_bridge *bridge;
struct prestera_mdb_entry *mdb;
struct list_head br_mdb_port_list;
struct list_head br_mdb_entry_node;
bool enabled;
};
static struct workqueue_struct *swdev_wq;
static void prestera_bridge_port_put(struct prestera_bridge_port *br_port);
static int prestera_port_vid_stp_set(struct prestera_port *port, u16 vid,
u8 state);
static struct prestera_bridge *
prestera_bridge_find(const struct prestera_switch *sw,
const struct net_device *br_dev)
{
struct prestera_bridge *bridge;
list_for_each_entry(bridge, &sw->swdev->bridge_list, head)
if (bridge->dev == br_dev)
return bridge;
return NULL;
}
static struct prestera_bridge_port *
__prestera_bridge_port_find(const struct prestera_bridge *bridge,
const struct net_device *brport_dev)
{
struct prestera_bridge_port *br_port;
list_for_each_entry(br_port, &bridge->port_list, head)
if (br_port->dev == brport_dev)
return br_port;
return NULL;
}
static struct prestera_bridge_port *
prestera_bridge_port_find(struct prestera_switch *sw,
struct net_device *brport_dev)
{
struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev);
struct prestera_bridge *bridge;
if (!br_dev)
return NULL;
bridge = prestera_bridge_find(sw, br_dev);
if (!bridge)
return NULL;
return __prestera_bridge_port_find(bridge, brport_dev);
}
static void
prestera_br_port_flags_reset(struct prestera_bridge_port *br_port,
struct prestera_port *port)
{
prestera_port_uc_flood_set(port, false);
prestera_port_mc_flood_set(port, false);
prestera_port_learning_set(port, false);
prestera_port_br_locked_set(port, false);
}
static int prestera_br_port_flags_set(struct prestera_bridge_port *br_port,
struct prestera_port *port)
{
int err;
err = prestera_port_uc_flood_set(port, br_port->flags & BR_FLOOD);
if (err)
goto err_out;
err = prestera_port_mc_flood_set(port, br_port->flags & BR_MCAST_FLOOD);
if (err)
goto err_out;
err = prestera_port_learning_set(port, br_port->flags & BR_LEARNING);
if (err)
goto err_out;
err = prestera_port_br_locked_set(port,
br_port->flags & BR_PORT_LOCKED);
if (err)
goto err_out;
return 0;
err_out:
prestera_br_port_flags_reset(br_port, port);
return err;
}
static struct prestera_bridge_vlan *
prestera_bridge_vlan_create(struct prestera_bridge_port *br_port, u16 vid)
{
struct prestera_bridge_vlan *br_vlan;
br_vlan = kzalloc_obj(*br_vlan);
if (!br_vlan)
return NULL;
INIT_LIST_HEAD(&br_vlan->port_vlan_list);
br_vlan->vid = vid;
list_add(&br_vlan->head, &br_port->vlan_list);
return br_vlan;
}
static void prestera_bridge_vlan_destroy(struct prestera_bridge_vlan *br_vlan)
{
list_del(&br_vlan->head);
WARN_ON(!list_empty(&br_vlan->port_vlan_list));
kfree(br_vlan);
}
static struct prestera_bridge_vlan *
prestera_bridge_vlan_by_vid(struct prestera_bridge_port *br_port, u16 vid)
{
struct prestera_bridge_vlan *br_vlan;
list_for_each_entry(br_vlan, &br_port->vlan_list, head) {
if (br_vlan->vid == vid)
return br_vlan;
}
return NULL;
}
static int prestera_bridge_vlan_port_count(struct prestera_bridge *bridge,
u16 vid)
{
struct prestera_bridge_port *br_port;
struct prestera_bridge_vlan *br_vlan;
int count = 0;
list_for_each_entry(br_port, &bridge->port_list, head) {
list_for_each_entry(br_vlan, &br_port->vlan_list, head) {
if (br_vlan->vid == vid) {
count += 1;
break;
}
}
}
return count;
}
static void prestera_bridge_vlan_put(struct prestera_bridge_vlan *br_vlan)
{
if (list_empty(&br_vlan->port_vlan_list))
prestera_bridge_vlan_destroy(br_vlan);
}
static struct prestera_port_vlan *
prestera_port_vlan_by_vid(struct prestera_port *port, u16 vid)
{
struct prestera_port_vlan *port_vlan;
list_for_each_entry(port_vlan, &port->vlans_list, port_head) {
if (port_vlan->vid == vid)
return port_vlan;
}
return NULL;
}
static struct prestera_port_vlan *
prestera_port_vlan_create(struct prestera_port *port, u16 vid, bool untagged)
{
struct prestera_port_vlan *port_vlan;
int err;
port_vlan = prestera_port_vlan_by_vid(port, vid);
if (port_vlan)
return ERR_PTR(-EEXIST);
err = prestera_hw_vlan_port_set(port, vid, true, untagged);
if (err)
return ERR_PTR(err);
port_vlan = kzalloc_obj(*port_vlan);
if (!port_vlan) {
err = -ENOMEM;
goto err_port_vlan_alloc;
}
port_vlan->port = port;
port_vlan->vid = vid;
list_add(&port_vlan->port_head, &port->vlans_list);
return port_vlan;
err_port_vlan_alloc:
prestera_hw_vlan_port_set(port, vid, false, false);
return ERR_PTR(err);
}
static int prestera_fdb_add(struct prestera_port *port,
const unsigned char *mac, u16 vid, bool dynamic)
{
if (prestera_port_is_lag_member(port))
return prestera_hw_lag_fdb_add(port->sw, prestera_port_lag_id(port),
mac, vid, dynamic);
return prestera_hw_fdb_add(port, mac, vid, dynamic);
}
static int prestera_fdb_del(struct prestera_port *port,
const unsigned char *mac, u16 vid)
{
if (prestera_port_is_lag_member(port))
return prestera_hw_lag_fdb_del(port->sw, prestera_port_lag_id(port),
mac, vid);
else
return prestera_hw_fdb_del(port, mac, vid);
}
static int prestera_fdb_flush_port_vlan(struct prestera_port *port, u16 vid,
u32 mode)
{
if (prestera_port_is_lag_member(port))
return prestera_hw_fdb_flush_lag_vlan(port->sw, prestera_port_lag_id(port),
vid, mode);
else
return prestera_hw_fdb_flush_port_vlan(port, vid, mode);
}
static int prestera_fdb_flush_port(struct prestera_port *port, u32 mode)
{
if (prestera_port_is_lag_member(port))
return prestera_hw_fdb_flush_lag(port->sw, prestera_port_lag_id(port),
mode);
else
return prestera_hw_fdb_flush_port(port, mode);
}
static void
prestera_mdb_port_del(struct prestera_mdb_entry *mdb,
struct net_device *orig_dev)
{
struct prestera_flood_domain *fl_domain = mdb->flood_domain;
struct prestera_flood_domain_port *flood_domain_port;
flood_domain_port = prestera_flood_domain_port_find(fl_domain,
orig_dev,
mdb->vid);
if (flood_domain_port)
prestera_flood_domain_port_destroy(flood_domain_port);
}
static void
prestera_br_mdb_entry_put(struct prestera_br_mdb_entry *br_mdb)
{
struct prestera_bridge_port *br_port;
if (list_empty(&br_mdb->br_mdb_port_list)) {
list_for_each_entry(br_port, &br_mdb->bridge->port_list, head)
prestera_mdb_port_del(br_mdb->mdb, br_port->dev);
prestera_mdb_entry_destroy(br_mdb->mdb);
list_del(&br_mdb->br_mdb_entry_node);
kfree(br_mdb);
}
}
static void
prestera_br_mdb_port_del(struct prestera_br_mdb_entry *br_mdb,
struct prestera_bridge_port *br_port)
{
struct prestera_br_mdb_port *br_mdb_port, *tmp;
list_for_each_entry_safe(br_mdb_port, tmp, &br_mdb->br_mdb_port_list,
br_mdb_port_node) {
if (br_mdb_port->br_port == br_port) {
list_del(&br_mdb_port->br_mdb_port_node);
kfree(br_mdb_port);
}
}
}
static void
prestera_mdb_flush_bridge_port(struct prestera_bridge_port *br_port)
{
struct prestera_br_mdb_port *br_mdb_port, *tmp_port;
struct prestera_br_mdb_entry *br_mdb, *br_mdb_tmp;
struct prestera_bridge *br_dev = br_port->bridge;
list_for_each_entry_safe(br_mdb, br_mdb_tmp, &br_dev->br_mdb_entry_list,
br_mdb_entry_node) {
list_for_each_entry_safe(br_mdb_port, tmp_port,
&br_mdb->br_mdb_port_list,
br_mdb_port_node) {
prestera_mdb_port_del(br_mdb->mdb,
br_mdb_port->br_port->dev);
prestera_br_mdb_port_del(br_mdb, br_mdb_port->br_port);
}
prestera_br_mdb_entry_put(br_mdb);
}
}
static void
prestera_port_vlan_bridge_leave(struct prestera_port_vlan *port_vlan)
{
u32 fdb_flush_mode = PRESTERA_FDB_FLUSH_MODE_DYNAMIC;
struct prestera_port *port = port_vlan->port;
struct prestera_bridge_vlan *br_vlan;
struct prestera_bridge_port *br_port;
bool last_port, last_vlan;
u16 vid = port_vlan->vid;
int port_count;
br_port = port_vlan->br_port;
port_count = prestera_bridge_vlan_port_count(br_port->bridge, vid);
br_vlan = prestera_bridge_vlan_by_vid(br_port, vid);
last_vlan = list_is_singular(&br_port->vlan_list);
last_port = port_count == 1;
if (last_vlan)
prestera_fdb_flush_port(port, fdb_flush_mode);
else if (last_port)
prestera_hw_fdb_flush_vlan(port->sw, vid, fdb_flush_mode);
else
prestera_fdb_flush_port_vlan(port, vid, fdb_flush_mode);
prestera_mdb_flush_bridge_port(br_port);
list_del(&port_vlan->br_vlan_head);
prestera_bridge_vlan_put(br_vlan);
prestera_bridge_port_put(br_port);
port_vlan->br_port = NULL;
}
static void prestera_port_vlan_destroy(struct prestera_port_vlan *port_vlan)
{
struct prestera_port *port = port_vlan->port;
u16 vid = port_vlan->vid;
if (port_vlan->br_port)
prestera_port_vlan_bridge_leave(port_vlan);
prestera_hw_vlan_port_set(port, vid, false, false);
list_del(&port_vlan->port_head);
kfree(port_vlan);
}
static struct prestera_bridge *
prestera_bridge_create(struct prestera_switchdev *swdev, struct net_device *dev)
{
bool vlan_enabled = br_vlan_enabled(dev);
struct prestera_bridge *bridge;
u16 bridge_id;
int err;
if (vlan_enabled && swdev->bridge_8021q_exists) {
netdev_err(dev, "Only one VLAN-aware bridge is supported\n");
return ERR_PTR(-EINVAL);
}
bridge = kzalloc_obj(*bridge);
if (!bridge)
return ERR_PTR(-ENOMEM);
if (vlan_enabled) {
swdev->bridge_8021q_exists = true;
} else {
err = prestera_hw_bridge_create(swdev->sw, &bridge_id);
if (err) {
kfree(bridge);
return ERR_PTR(err);
}
bridge->bridge_id = bridge_id;
}
bridge->vlan_enabled = vlan_enabled;
bridge->swdev = swdev;
bridge->dev = dev;
bridge->multicast_enabled = br_multicast_enabled(dev);
INIT_LIST_HEAD(&bridge->port_list);
INIT_LIST_HEAD(&bridge->br_mdb_entry_list);
list_add(&bridge->head, &swdev->bridge_list);
return bridge;
}
static void prestera_bridge_destroy(struct prestera_bridge *bridge)
{
struct prestera_switchdev *swdev = bridge->swdev;
list_del(&bridge->head);
if (bridge->vlan_enabled)
swdev->bridge_8021q_exists = false;
else
prestera_hw_bridge_delete(swdev->sw, bridge->bridge_id);
WARN_ON(!list_empty(&bridge->br_mdb_entry_list));
WARN_ON(!list_empty(&bridge->port_list));
kfree(bridge);
}
static void prestera_bridge_put(struct prestera_bridge *bridge)
{
if (list_empty(&bridge->port_list))
prestera_bridge_destroy(bridge);
}
static
struct prestera_bridge *prestera_bridge_by_dev(struct prestera_switchdev *swdev,
const struct net_device *dev)
{
struct prestera_bridge *bridge;
list_for_each_entry(bridge, &swdev->bridge_list, head)
if (bridge->dev == dev)
return bridge;
return NULL;
}
static struct prestera_bridge_port *
__prestera_bridge_port_by_dev(struct prestera_bridge *bridge,
struct net_device *dev)
{
struct prestera_bridge_port *br_port;
list_for_each_entry(br_port, &bridge->port_list, head) {
if (br_port->dev == dev)
return br_port;
}
return NULL;
}
static int prestera_match_upper_bridge_dev(struct net_device *dev,
struct netdev_nested_priv *priv)
{
if (netif_is_bridge_master(dev))
priv->data = dev;
return 0;
}
static struct net_device *prestera_get_upper_bridge_dev(struct net_device *dev)
{
struct netdev_nested_priv priv = { };
netdev_walk_all_upper_dev_rcu(dev, prestera_match_upper_bridge_dev,
&priv);
return priv.data;
}
static struct prestera_bridge_port *
prestera_bridge_port_by_dev(struct prestera_switchdev *swdev,
struct net_device *dev)
{
struct net_device *br_dev = prestera_get_upper_bridge_dev(dev);
struct prestera_bridge *bridge;
if (!br_dev)
return NULL;
bridge = prestera_bridge_by_dev(swdev, br_dev);
if (!bridge)
return NULL;
return __prestera_bridge_port_by_dev(bridge, dev);
}
static struct prestera_bridge_port *
prestera_bridge_port_create(struct prestera_bridge *bridge,
struct net_device *dev)
{
struct prestera_bridge_port *br_port;
br_port = kzalloc_obj(*br_port);
if (!br_port)
return NULL;
br_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC |
BR_MCAST_FLOOD;
br_port->stp_state = BR_STATE_DISABLED;
refcount_set(&br_port->ref_count, 1);
br_port->bridge = bridge;
br_port->dev = dev;
INIT_LIST_HEAD(&br_port->vlan_list);
list_add(&br_port->head, &bridge->port_list);
INIT_LIST_HEAD(&br_port->br_mdb_port_list);
return br_port;
}
static void
prestera_bridge_port_destroy(struct prestera_bridge_port *br_port)
{
list_del(&br_port->head);
WARN_ON(!list_empty(&br_port->vlan_list));
WARN_ON(!list_empty(&br_port->br_mdb_port_list));
kfree(br_port);
}
static void prestera_bridge_port_get(struct prestera_bridge_port *br_port)
{
refcount_inc(&br_port->ref_count);
}
static void prestera_bridge_port_put(struct prestera_bridge_port *br_port)
{
struct prestera_bridge *bridge = br_port->bridge;
if (refcount_dec_and_test(&br_port->ref_count)) {
prestera_bridge_port_destroy(br_port);
prestera_bridge_put(bridge);
}
}
static struct prestera_bridge_port *
prestera_bridge_port_add(struct prestera_bridge *bridge, struct net_device *dev)
{
struct prestera_bridge_port *br_port;
br_port = __prestera_bridge_port_by_dev(bridge, dev);
if (br_port) {
prestera_bridge_port_get(br_port);
return br_port;
}
br_port = prestera_bridge_port_create(bridge, dev);
if (!br_port)
return ERR_PTR(-ENOMEM);
return br_port;
}
static int
prestera_bridge_1d_port_join(struct prestera_bridge_port *br_port)
{
struct prestera_port *port = netdev_priv(br_port->dev);
struct prestera_bridge *bridge = br_port->bridge;
int err;
err = prestera_hw_bridge_port_add(port, bridge->bridge_id);
if (err)
return err;
err = prestera_br_port_flags_set(br_port, port);
if (err)
goto err_flags2port_set;
return 0;
err_flags2port_set:
prestera_hw_bridge_port_delete(port, bridge->bridge_id);
return err;
}
int prestera_bridge_port_join(struct net_device *br_dev,
struct prestera_port *port,
struct netlink_ext_ack *extack)
{
struct prestera_switchdev *swdev = port->sw->swdev;
struct prestera_bridge_port *br_port;
struct prestera_bridge *bridge;
int err;
bridge = prestera_bridge_by_dev(swdev, br_dev);
if (!bridge) {
bridge = prestera_bridge_create(swdev, br_dev);
if (IS_ERR(bridge))
return PTR_ERR(bridge);
}
br_port = prestera_bridge_port_add(bridge, port->dev);
if (IS_ERR(br_port)) {
prestera_bridge_put(bridge);
return PTR_ERR(br_port);
}
err = switchdev_bridge_port_offload(br_port->dev, port->dev, NULL,
NULL, NULL, false, extack);
if (err)
goto err_switchdev_offload;
if (bridge->vlan_enabled)
return 0;
err = prestera_bridge_1d_port_join(br_port);
if (err)
goto err_port_join;
return 0;
err_port_join:
switchdev_bridge_port_unoffload(br_port->dev, NULL, NULL, NULL);
err_switchdev_offload:
prestera_bridge_port_put(br_port);
return err;
}
static void prestera_bridge_1q_port_leave(struct prestera_bridge_port *br_port)
{
struct prestera_port *port = netdev_priv(br_port->dev);
prestera_hw_fdb_flush_port(port, PRESTERA_FDB_FLUSH_MODE_ALL);
prestera_port_pvid_set(port, PRESTERA_DEFAULT_VID);
}
static void prestera_bridge_1d_port_leave(struct prestera_bridge_port *br_port)
{
struct prestera_port *port = netdev_priv(br_port->dev);
prestera_hw_fdb_flush_port(port, PRESTERA_FDB_FLUSH_MODE_ALL);
prestera_hw_bridge_port_delete(port, br_port->bridge->bridge_id);
}
static int prestera_port_vid_stp_set(struct prestera_port *port, u16 vid,
u8 state)
{
u8 hw_state = state;
switch (state) {
case BR_STATE_DISABLED:
hw_state = PRESTERA_STP_DISABLED;
break;
case BR_STATE_BLOCKING:
case BR_STATE_LISTENING:
hw_state = PRESTERA_STP_BLOCK_LISTEN;
break;
case BR_STATE_LEARNING:
hw_state = PRESTERA_STP_LEARN;
break;
case BR_STATE_FORWARDING:
hw_state = PRESTERA_STP_FORWARD;
break;
default:
return -EINVAL;
}
return prestera_hw_vlan_port_stp_set(port, vid, hw_state);
}
void prestera_bridge_port_leave(struct net_device *br_dev,
struct prestera_port *port)
{
struct prestera_switchdev *swdev = port->sw->swdev;
struct prestera_bridge_port *br_port;
struct prestera_bridge *bridge;
bridge = prestera_bridge_by_dev(swdev, br_dev);
if (!bridge)
return;
br_port = __prestera_bridge_port_by_dev(bridge, port->dev);
if (!br_port)
return;
bridge = br_port->bridge;
if (bridge->vlan_enabled)
prestera_bridge_1q_port_leave(br_port);
else
prestera_bridge_1d_port_leave(br_port);
switchdev_bridge_port_unoffload(br_port->dev, NULL, NULL, NULL);
prestera_mdb_flush_bridge_port(br_port);
prestera_br_port_flags_reset(br_port, port);
prestera_port_vid_stp_set(port, PRESTERA_VID_ALL, BR_STATE_FORWARDING);
prestera_bridge_port_put(br_port);
}
static int prestera_port_attr_br_flags_set(struct prestera_port *port,
struct net_device *dev,
struct switchdev_brport_flags flags)
{
struct prestera_bridge_port *br_port;
br_port = prestera_bridge_port_by_dev(port->sw->swdev, dev);
if (!br_port)
return 0;
br_port->flags &= ~flags.mask;
br_port->flags |= flags.val & flags.mask;
return prestera_br_port_flags_set(br_port, port);
}
static int prestera_port_attr_br_ageing_set(struct prestera_port *port,
unsigned long ageing_clock_t)
{
unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
u32 ageing_time_ms = jiffies_to_msecs(ageing_jiffies);
struct prestera_switch *sw = port->sw;
if (ageing_time_ms < PRESTERA_MIN_AGEING_TIME_MS ||
ageing_time_ms > PRESTERA_MAX_AGEING_TIME_MS)
return -ERANGE;
return prestera_hw_switch_ageing_set(sw, ageing_time_ms);
}
static int prestera_port_attr_br_vlan_set(struct prestera_port *port,
struct net_device *dev,
bool vlan_enabled)
{
struct prestera_switch *sw = port->sw;
struct prestera_bridge *bridge;
bridge = prestera_bridge_by_dev(sw->swdev, dev);
if (WARN_ON(!bridge))
return -EINVAL;
if (bridge->vlan_enabled == vlan_enabled)
return 0;
netdev_err(bridge->dev, "VLAN filtering can't be changed for existing bridge\n");
return -EINVAL;
}
static int prestera_port_bridge_vlan_stp_set(struct prestera_port *port,
struct prestera_bridge_vlan *br_vlan,
u8 state)
{
struct prestera_port_vlan *port_vlan;
list_for_each_entry(port_vlan, &br_vlan->port_vlan_list, br_vlan_head) {
if (port_vlan->port != port)
continue;
return prestera_port_vid_stp_set(port, br_vlan->vid, state);
}
return 0;
}
static int prestera_port_attr_stp_state_set(struct prestera_port *port,
struct net_device *dev,
u8 state)
{
struct prestera_bridge_port *br_port;
struct prestera_bridge_vlan *br_vlan;
int err;
u16 vid;
br_port = prestera_bridge_port_by_dev(port->sw->swdev, dev);
if (!br_port)
return 0;
if (!br_port->bridge->vlan_enabled) {
vid = br_port->bridge->bridge_id;
err = prestera_port_vid_stp_set(port, vid, state);
if (err)
goto err_port_stp_set;
} else {
list_for_each_entry(br_vlan, &br_port->vlan_list, head) {
err = prestera_port_bridge_vlan_stp_set(port, br_vlan,
state);
if (err)
goto err_port_vlan_stp_set;
}
}
br_port->stp_state = state;
return 0;
err_port_vlan_stp_set:
list_for_each_entry_continue_reverse(br_vlan, &br_port->vlan_list, head)
prestera_port_bridge_vlan_stp_set(port, br_vlan, br_port->stp_state);
return err;
err_port_stp_set:
prestera_port_vid_stp_set(port, vid, br_port->stp_state);
return err;
}
static int
prestera_br_port_lag_mdb_mc_enable_sync(struct prestera_bridge_port *br_port,
bool enabled)
{
struct prestera_port *pr_port;
struct prestera_switch *sw;
u16 lag_id;
int err;
pr_port = prestera_port_dev_lower_find(br_port->dev);
if (!pr_port)
return 0;
sw = pr_port->sw;
err = prestera_lag_id(sw, br_port->dev, &lag_id);
if (err)
return err;
list_for_each_entry(pr_port, &sw->port_list, list) {
if (pr_port->lag->lag_id == lag_id) {
err = prestera_port_mc_flood_set(pr_port, enabled);
if (err)
return err;
}
}
return 0;
}
static int prestera_br_mdb_mc_enable_sync(struct prestera_bridge *br_dev)
{
struct prestera_bridge_port *br_port;
struct prestera_port *port;
bool enabled;
int err;
list_for_each_entry(br_port, &br_dev->port_list, head) {
if (br_dev->multicast_enabled && br_dev->mrouter_exist)
enabled = br_port->mrouter;
else
enabled = br_port->flags & BR_MCAST_FLOOD;
if (netif_is_lag_master(br_port->dev)) {
err = prestera_br_port_lag_mdb_mc_enable_sync(br_port,
enabled);
if (err)
return err;
continue;
}
port = prestera_port_dev_lower_find(br_port->dev);
if (!port)
continue;
err = prestera_port_mc_flood_set(port, enabled);
if (err)
return err;
}
return 0;
}
static bool
prestera_br_mdb_port_is_member(struct prestera_br_mdb_entry *br_mdb,
struct net_device *orig_dev)
{
struct prestera_br_mdb_port *tmp_port;
list_for_each_entry(tmp_port, &br_mdb->br_mdb_port_list,
br_mdb_port_node)
if (tmp_port->br_port->dev == orig_dev)
return true;
return false;
}
static int
prestera_mdb_port_add(struct prestera_mdb_entry *mdb,
struct net_device *orig_dev,
const unsigned char addr[ETH_ALEN], u16 vid)
{
struct prestera_flood_domain *flood_domain = mdb->flood_domain;
int err;
if (!prestera_flood_domain_port_find(flood_domain,
orig_dev, vid)) {
err = prestera_flood_domain_port_create(flood_domain, orig_dev,
vid);
if (err)
return err;
}
return 0;
}
static int prestera_br_mdb_sync(struct prestera_bridge *br_dev)
{
struct prestera_br_mdb_port *br_mdb_port;
struct prestera_bridge_port *br_port;
struct prestera_br_mdb_entry *br_mdb;
struct prestera_mdb_entry *mdb;
struct prestera_port *pr_port;
int err = 0;
if (!br_dev->multicast_enabled)
return 0;
list_for_each_entry(br_mdb, &br_dev->br_mdb_entry_list,
br_mdb_entry_node) {
mdb = br_mdb->mdb;
list_for_each_entry(br_mdb_port, &br_mdb->br_mdb_port_list,
br_mdb_port_node) {
br_port = br_mdb_port->br_port;
pr_port = prestera_port_dev_lower_find(br_port->dev);
if (br_dev->vlan_enabled &&
!prestera_port_vlan_by_vid(pr_port,
mdb->vid))
continue;
if (prestera_br_mdb_port_is_member(br_mdb,
br_mdb_port->br_port->dev) &&
br_dev->mrouter_exist)
err = prestera_mdb_port_add(mdb, br_port->dev,
mdb->addr,
mdb->vid);
else
prestera_mdb_port_del(mdb, br_port->dev);
if (err)
return err;
}
list_for_each_entry(br_port, &br_dev->port_list, head) {
pr_port = prestera_port_dev_lower_find(br_port->dev);
if (br_dev->vlan_enabled &&
!prestera_port_vlan_by_vid(pr_port,
mdb->vid))
continue;
if (br_port->mrouter) {
err = prestera_mdb_port_add(mdb, br_port->dev,
mdb->addr,
mdb->vid);
if (err)
return err;
} else if (!br_port->mrouter &&
!prestera_br_mdb_port_is_member
(br_mdb, br_port->dev)) {
prestera_mdb_port_del(mdb, br_port->dev);
}
}
}
return 0;
}
static int
prestera_mdb_enable_set(struct prestera_br_mdb_entry *br_mdb, bool enable)
{
int err;
if (enable != br_mdb->enabled) {
if (enable)
err = prestera_hw_mdb_create(br_mdb->mdb);
else
err = prestera_hw_mdb_destroy(br_mdb->mdb);
if (err)
return err;
br_mdb->enabled = enable;
}
return 0;
}
static int
prestera_br_mdb_enable_set(struct prestera_bridge *br_dev, bool enable)
{
struct prestera_br_mdb_entry *br_mdb;
int err;
list_for_each_entry(br_mdb, &br_dev->br_mdb_entry_list,
br_mdb_entry_node) {
err = prestera_mdb_enable_set(br_mdb, enable);
if (err)
return err;
}
return 0;
}
static int prestera_port_attr_br_mc_disabled_set(struct prestera_port *port,
struct net_device *orig_dev,
bool mc_disabled)
{
struct prestera_switch *sw = port->sw;
struct prestera_bridge *br_dev;
br_dev = prestera_bridge_find(sw, orig_dev);
if (!br_dev)
return 0;
br_dev->multicast_enabled = !mc_disabled;
WARN_ON(prestera_br_mdb_enable_set(br_dev, br_dev->multicast_enabled &&
br_dev->mrouter_exist));
WARN_ON(prestera_br_mdb_sync(br_dev));
WARN_ON(prestera_br_mdb_mc_enable_sync(br_dev));
return 0;
}
static bool
prestera_bridge_mdb_mc_mrouter_exists(struct prestera_bridge *br_dev)
{
struct prestera_bridge_port *br_port;
list_for_each_entry(br_port, &br_dev->port_list, head)
if (br_port->mrouter)
return true;
return false;
}
static int
prestera_port_attr_mrouter_set(struct prestera_port *port,
struct net_device *orig_dev,
bool is_port_mrouter)
{
struct prestera_bridge_port *br_port;
struct prestera_bridge *br_dev;
br_port = prestera_bridge_port_find(port->sw, orig_dev);
if (!br_port)
return 0;
br_dev = br_port->bridge;
br_port->mrouter = is_port_mrouter;
br_dev->mrouter_exist = prestera_bridge_mdb_mc_mrouter_exists(br_dev);
WARN_ON(prestera_br_mdb_enable_set(br_dev, br_dev->multicast_enabled &&
br_dev->mrouter_exist));
WARN_ON(prestera_br_mdb_sync(br_dev));
WARN_ON(prestera_br_mdb_mc_enable_sync(br_dev));
return 0;
}
static int prestera_port_obj_attr_set(struct net_device *dev, const void *ctx,
const struct switchdev_attr *attr,
struct netlink_ext_ack *extack)
{
struct prestera_port *port = netdev_priv(dev);
int err = 0;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
err = prestera_port_attr_stp_state_set(port, attr->orig_dev,
attr->u.stp_state);
break;
case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
if (attr->u.brport_flags.mask &
~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_PORT_LOCKED))
err = -EINVAL;
break;
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
err = prestera_port_attr_br_flags_set(port, attr->orig_dev,
attr->u.brport_flags);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
err = prestera_port_attr_br_ageing_set(port,
attr->u.ageing_time);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
err = prestera_port_attr_br_vlan_set(port, attr->orig_dev,
attr->u.vlan_filtering);
break;
case SWITCHDEV_ATTR_ID_PORT_MROUTER:
err = prestera_port_attr_mrouter_set(port, attr->orig_dev,
attr->u.mrouter);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
err = prestera_port_attr_br_mc_disabled_set(port, attr->orig_dev,
attr->u.mc_disabled);
break;
default:
err = -EOPNOTSUPP;
}
return err;
}
static void
prestera_fdb_offload_notify(struct prestera_port *port,
struct switchdev_notifier_fdb_info *info)
{
struct switchdev_notifier_fdb_info send_info = {};
send_info.addr = info->addr;
send_info.vid = info->vid;
send_info.offloaded = true;
call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, port->dev,
&send_info.info, NULL);
}
static int prestera_port_fdb_set(struct prestera_port *port,
struct switchdev_notifier_fdb_info *fdb_info,
bool adding)
{
struct prestera_switch *sw = port->sw;
struct prestera_bridge_port *br_port;
struct prestera_bridge *bridge;
int err;
u16 vid;
br_port = prestera_bridge_port_by_dev(sw->swdev, port->dev);
if (!br_port)
return -EINVAL;
bridge = br_port->bridge;
if (bridge->vlan_enabled)
vid = fdb_info->vid;
else
vid = bridge->bridge_id;
if (adding)
err = prestera_fdb_add(port, fdb_info->addr, vid, false);
else
err = prestera_fdb_del(port, fdb_info->addr, vid);
return err;
}
static void prestera_fdb_event_work(struct work_struct *work)
{
struct switchdev_notifier_fdb_info *fdb_info;
struct prestera_fdb_event_work *swdev_work;
struct prestera_port *port;
struct net_device *dev;
int err;
swdev_work = container_of(work, struct prestera_fdb_event_work, work);
dev = swdev_work->dev;
rtnl_lock();
port = prestera_port_dev_lower_find(dev);
if (!port)
goto out_unlock;
switch (swdev_work->event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE:
fdb_info = &swdev_work->fdb_info;
if (!fdb_info->added_by_user || fdb_info->is_local)
break;
err = prestera_port_fdb_set(port, fdb_info, true);
if (err)
break;
prestera_fdb_offload_notify(port, fdb_info);
break;
case SWITCHDEV_FDB_DEL_TO_DEVICE:
fdb_info = &swdev_work->fdb_info;
prestera_port_fdb_set(port, fdb_info, false);
break;
}
out_unlock:
rtnl_unlock();
kfree(swdev_work->fdb_info.addr);
kfree(swdev_work);
dev_put(dev);
}
static int prestera_switchdev_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
struct switchdev_notifier_fdb_info *fdb_info;
struct switchdev_notifier_info *info = ptr;
struct prestera_fdb_event_work *swdev_work;
struct net_device *upper;
int err;
if (event == SWITCHDEV_PORT_ATTR_SET) {
err = switchdev_handle_port_attr_set(dev, ptr,
prestera_netdev_check,
prestera_port_obj_attr_set);
return notifier_from_errno(err);
}
if (!prestera_netdev_check(dev))
return NOTIFY_DONE;
upper = netdev_master_upper_dev_get_rcu(dev);
if (!upper)
return NOTIFY_DONE;
if (!netif_is_bridge_master(upper))
return NOTIFY_DONE;
swdev_work = kzalloc_obj(*swdev_work, GFP_ATOMIC);
if (!swdev_work)
return NOTIFY_BAD;
swdev_work->event = event;
swdev_work->dev = dev;
switch (event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE:
case SWITCHDEV_FDB_DEL_TO_DEVICE:
fdb_info = container_of(info,
struct switchdev_notifier_fdb_info,
info);
INIT_WORK(&swdev_work->work, prestera_fdb_event_work);
memcpy(&swdev_work->fdb_info, ptr,
sizeof(swdev_work->fdb_info));
swdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
if (!swdev_work->fdb_info.addr)
goto out_bad;
ether_addr_copy((u8 *)swdev_work->fdb_info.addr,
fdb_info->addr);
dev_hold(dev);
break;
default:
kfree(swdev_work);
return NOTIFY_DONE;
}
queue_work(swdev_wq, &swdev_work->work);
return NOTIFY_DONE;
out_bad:
kfree(swdev_work);
return NOTIFY_BAD;
}
static int
prestera_port_vlan_bridge_join(struct prestera_port_vlan *port_vlan,
struct prestera_bridge_port *br_port)
{
struct prestera_port *port = port_vlan->port;
struct prestera_bridge_vlan *br_vlan;
u16 vid = port_vlan->vid;
int err;
if (port_vlan->br_port)
return 0;
err = prestera_br_port_flags_set(br_port, port);
if (err)
goto err_flags2port_set;
err = prestera_port_vid_stp_set(port, vid, br_port->stp_state);
if (err)
goto err_port_vid_stp_set;
br_vlan = prestera_bridge_vlan_by_vid(br_port, vid);
if (!br_vlan) {
br_vlan = prestera_bridge_vlan_create(br_port, vid);
if (!br_vlan) {
err = -ENOMEM;
goto err_bridge_vlan_get;
}
}
list_add(&port_vlan->br_vlan_head, &br_vlan->port_vlan_list);
prestera_bridge_port_get(br_port);
port_vlan->br_port = br_port;
return 0;
err_bridge_vlan_get:
prestera_port_vid_stp_set(port, vid, BR_STATE_FORWARDING);
err_port_vid_stp_set:
prestera_br_port_flags_reset(br_port, port);
err_flags2port_set:
return err;
}
static int
prestera_bridge_port_vlan_add(struct prestera_port *port,
struct prestera_bridge_port *br_port,
u16 vid, bool is_untagged, bool is_pvid,
struct netlink_ext_ack *extack)
{
struct prestera_port_vlan *port_vlan;
u16 old_pvid = port->pvid;
u16 pvid;
int err;
if (is_pvid)
pvid = vid;
else
pvid = port->pvid == vid ? 0 : port->pvid;
port_vlan = prestera_port_vlan_by_vid(port, vid);
if (port_vlan && port_vlan->br_port != br_port)
return -EEXIST;
if (!port_vlan) {
port_vlan = prestera_port_vlan_create(port, vid, is_untagged);
if (IS_ERR(port_vlan))
return PTR_ERR(port_vlan);
} else {
err = prestera_hw_vlan_port_set(port, vid, true, is_untagged);
if (err)
goto err_port_vlan_set;
}
err = prestera_port_pvid_set(port, pvid);
if (err)
goto err_port_pvid_set;
err = prestera_port_vlan_bridge_join(port_vlan, br_port);
if (err)
goto err_port_vlan_bridge_join;
return 0;
err_port_vlan_bridge_join:
prestera_port_pvid_set(port, old_pvid);
err_port_pvid_set:
prestera_hw_vlan_port_set(port, vid, false, false);
err_port_vlan_set:
prestera_port_vlan_destroy(port_vlan);
return err;
}
static void
prestera_bridge_port_vlan_del(struct prestera_port *port,
struct prestera_bridge_port *br_port, u16 vid)
{
u16 pvid = port->pvid == vid ? 0 : port->pvid;
struct prestera_port_vlan *port_vlan;
port_vlan = prestera_port_vlan_by_vid(port, vid);
if (WARN_ON(!port_vlan))
return;
prestera_port_vlan_bridge_leave(port_vlan);
prestera_port_pvid_set(port, pvid);
prestera_port_vlan_destroy(port_vlan);
}
static int prestera_port_vlans_add(struct prestera_port *port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
{
bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
struct net_device *orig_dev = vlan->obj.orig_dev;
struct prestera_bridge_port *br_port;
struct prestera_switch *sw = port->sw;
struct prestera_bridge *bridge;
if (netif_is_bridge_master(orig_dev))
return 0;
br_port = prestera_bridge_port_by_dev(sw->swdev, port->dev);
if (WARN_ON(!br_port))
return -EINVAL;
bridge = br_port->bridge;
if (!bridge->vlan_enabled)
return 0;
return prestera_bridge_port_vlan_add(port, br_port,
vlan->vid, flag_untagged,
flag_pvid, extack);
}
static struct prestera_br_mdb_entry *
prestera_br_mdb_entry_create(struct prestera_switch *sw,
struct prestera_bridge *br_dev,
const unsigned char *addr, u16 vid)
{
struct prestera_br_mdb_entry *br_mdb_entry;
struct prestera_mdb_entry *mdb_entry;
br_mdb_entry = kzalloc_obj(*br_mdb_entry);
if (!br_mdb_entry)
return NULL;
mdb_entry = prestera_mdb_entry_create(sw, addr, vid);
if (!mdb_entry)
goto err_mdb_alloc;
br_mdb_entry->mdb = mdb_entry;
br_mdb_entry->bridge = br_dev;
br_mdb_entry->enabled = true;
INIT_LIST_HEAD(&br_mdb_entry->br_mdb_port_list);
list_add(&br_mdb_entry->br_mdb_entry_node, &br_dev->br_mdb_entry_list);
return br_mdb_entry;
err_mdb_alloc:
kfree(br_mdb_entry);
return NULL;
}
static int prestera_br_mdb_port_add(struct prestera_br_mdb_entry *br_mdb,
struct prestera_bridge_port *br_port)
{
struct prestera_br_mdb_port *br_mdb_port;
list_for_each_entry(br_mdb_port, &br_mdb->br_mdb_port_list,
br_mdb_port_node)
if (br_mdb_port->br_port == br_port)
return 0;
br_mdb_port = kzalloc_obj(*br_mdb_port);
if (!br_mdb_port)
return -ENOMEM;
br_mdb_port->br_port = br_port;
list_add(&br_mdb_port->br_mdb_port_node,
&br_mdb->br_mdb_port_list);
return 0;
}
static struct prestera_br_mdb_entry *
prestera_br_mdb_entry_find(struct prestera_bridge *br_dev,
const unsigned char *addr, u16 vid)
{
struct prestera_br_mdb_entry *br_mdb;
list_for_each_entry(br_mdb, &br_dev->br_mdb_entry_list,
br_mdb_entry_node)
if (ether_addr_equal(&br_mdb->mdb->addr[0], addr) &&
vid == br_mdb->mdb->vid)
return br_mdb;
return NULL;
}
static struct prestera_br_mdb_entry *
prestera_br_mdb_entry_get(struct prestera_switch *sw,
struct prestera_bridge *br_dev,
const unsigned char *addr, u16 vid)
{
struct prestera_br_mdb_entry *br_mdb;
br_mdb = prestera_br_mdb_entry_find(br_dev, addr, vid);
if (br_mdb)
return br_mdb;
return prestera_br_mdb_entry_create(sw, br_dev, addr, vid);
}
static int
prestera_mdb_port_addr_obj_add(const struct switchdev_obj_port_mdb *mdb)
{
struct prestera_br_mdb_entry *br_mdb;
struct prestera_bridge_port *br_port;
struct prestera_bridge *br_dev;
struct prestera_switch *sw;
struct prestera_port *port;
int err;
sw = prestera_switch_get(mdb->obj.orig_dev);
port = prestera_port_dev_lower_find(mdb->obj.orig_dev);
br_port = prestera_bridge_port_find(sw, mdb->obj.orig_dev);
if (!br_port)
return 0;
br_dev = br_port->bridge;
if (mdb->vid && !prestera_port_vlan_by_vid(port, mdb->vid))
return 0;
if (mdb->vid)
br_mdb = prestera_br_mdb_entry_get(sw, br_dev, &mdb->addr[0],
mdb->vid);
else
br_mdb = prestera_br_mdb_entry_get(sw, br_dev, &mdb->addr[0],
br_dev->bridge_id);
if (!br_mdb)
return -ENOMEM;
WARN_ON(prestera_mdb_enable_set(br_mdb, br_dev->multicast_enabled &&
br_dev->mrouter_exist));
err = prestera_br_mdb_port_add(br_mdb, br_port);
if (err) {
prestera_br_mdb_entry_put(br_mdb);
return err;
}
err = prestera_br_mdb_sync(br_dev);
if (err)
return err;
return 0;
}
static int prestera_port_obj_add(struct net_device *dev, const void *ctx,
const struct switchdev_obj *obj,
struct netlink_ext_ack *extack)
{
struct prestera_port *port = netdev_priv(dev);
const struct switchdev_obj_port_vlan *vlan;
const struct switchdev_obj_port_mdb *mdb;
int err = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
return prestera_port_vlans_add(port, vlan, extack);
case SWITCHDEV_OBJ_ID_PORT_MDB:
mdb = SWITCHDEV_OBJ_PORT_MDB(obj);
err = prestera_mdb_port_addr_obj_add(mdb);
break;
case SWITCHDEV_OBJ_ID_HOST_MDB:
fallthrough;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int prestera_port_vlans_del(struct prestera_port *port,
const struct switchdev_obj_port_vlan *vlan)
{
struct net_device *orig_dev = vlan->obj.orig_dev;
struct prestera_bridge_port *br_port;
struct prestera_switch *sw = port->sw;
if (netif_is_bridge_master(orig_dev))
return -EOPNOTSUPP;
br_port = prestera_bridge_port_by_dev(sw->swdev, port->dev);
if (WARN_ON(!br_port))
return -EINVAL;
if (!br_port->bridge->vlan_enabled)
return 0;
prestera_bridge_port_vlan_del(port, br_port, vlan->vid);
return 0;
}
static int
prestera_mdb_port_addr_obj_del(struct prestera_port *port,
const struct switchdev_obj_port_mdb *mdb)
{
struct prestera_br_mdb_entry *br_mdb;
struct prestera_bridge_port *br_port;
struct prestera_bridge *br_dev;
int err;
br_port = prestera_bridge_port_find(port->sw, mdb->obj.orig_dev);
if (!br_port)
return 0;
if (mdb->vid && !prestera_port_vlan_by_vid(port, mdb->vid))
return 0;
br_dev = br_port->bridge;
if (br_port->bridge->vlan_enabled)
br_mdb = prestera_br_mdb_entry_find(br_dev, &mdb->addr[0],
mdb->vid);
else
br_mdb = prestera_br_mdb_entry_find(br_dev, &mdb->addr[0],
br_port->bridge->bridge_id);
if (!br_mdb)
return 0;
prestera_br_mdb_port_del(br_mdb, br_port);
prestera_br_mdb_entry_put(br_mdb);
err = prestera_br_mdb_sync(br_dev);
if (err)
return err;
return 0;
}
static int prestera_port_obj_del(struct net_device *dev, const void *ctx,
const struct switchdev_obj *obj)
{
struct prestera_port *port = netdev_priv(dev);
const struct switchdev_obj_port_mdb *mdb;
int err = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
return prestera_port_vlans_del(port, SWITCHDEV_OBJ_PORT_VLAN(obj));
case SWITCHDEV_OBJ_ID_PORT_MDB:
mdb = SWITCHDEV_OBJ_PORT_MDB(obj);
err = prestera_mdb_port_addr_obj_del(port, mdb);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int prestera_switchdev_blk_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
int err;
switch (event) {
case SWITCHDEV_PORT_OBJ_ADD:
err = switchdev_handle_port_obj_add(dev, ptr,
prestera_netdev_check,
prestera_port_obj_add);
break;
case SWITCHDEV_PORT_OBJ_DEL:
err = switchdev_handle_port_obj_del(dev, ptr,
prestera_netdev_check,
prestera_port_obj_del);
break;
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
prestera_netdev_check,
prestera_port_obj_attr_set);
break;
default:
return NOTIFY_DONE;
}
return notifier_from_errno(err);
}
static void prestera_fdb_event(struct prestera_switch *sw,
struct prestera_event *evt, void *arg)
{
struct switchdev_notifier_fdb_info info = {};
struct net_device *dev = NULL;
struct prestera_port *port;
struct prestera_lag *lag;
switch (evt->fdb_evt.type) {
case PRESTERA_FDB_ENTRY_TYPE_REG_PORT:
port = prestera_find_port(sw, evt->fdb_evt.dest.port_id);
if (port)
dev = port->dev;
break;
case PRESTERA_FDB_ENTRY_TYPE_LAG:
lag = prestera_lag_by_id(sw, evt->fdb_evt.dest.lag_id);
if (lag)
dev = lag->dev;
break;
default:
return;
}
if (!dev)
return;
info.addr = evt->fdb_evt.data.mac;
info.vid = evt->fdb_evt.vid;
info.offloaded = true;
rtnl_lock();
switch (evt->id) {
case PRESTERA_FDB_EVENT_LEARNED:
call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
dev, &info.info, NULL);
break;
case PRESTERA_FDB_EVENT_AGED:
call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
dev, &info.info, NULL);
break;
}
rtnl_unlock();
}
static int prestera_fdb_init(struct prestera_switch *sw)
{
int err;
err = prestera_hw_event_handler_register(sw, PRESTERA_EVENT_TYPE_FDB,
prestera_fdb_event, NULL);
if (err)
return err;
err = prestera_hw_switch_ageing_set(sw, PRESTERA_DEFAULT_AGEING_TIME_MS);
if (err)
goto err_ageing_set;
return 0;
err_ageing_set:
prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_FDB,
prestera_fdb_event);
return err;
}
static void prestera_fdb_fini(struct prestera_switch *sw)
{
prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_FDB,
prestera_fdb_event);
}
static int prestera_switchdev_handler_init(struct prestera_switchdev *swdev)
{
int err;
swdev->swdev_nb.notifier_call = prestera_switchdev_event;
err = register_switchdev_notifier(&swdev->swdev_nb);
if (err)
goto err_register_swdev_notifier;
swdev->swdev_nb_blk.notifier_call = prestera_switchdev_blk_event;
err = register_switchdev_blocking_notifier(&swdev->swdev_nb_blk);
if (err)
goto err_register_blk_swdev_notifier;
return 0;
err_register_blk_swdev_notifier:
unregister_switchdev_notifier(&swdev->swdev_nb);
err_register_swdev_notifier:
destroy_workqueue(swdev_wq);
return err;
}
static void prestera_switchdev_handler_fini(struct prestera_switchdev *swdev)
{
unregister_switchdev_blocking_notifier(&swdev->swdev_nb_blk);
unregister_switchdev_notifier(&swdev->swdev_nb);
}
int prestera_switchdev_init(struct prestera_switch *sw)
{
struct prestera_switchdev *swdev;
int err;
swdev = kzalloc_obj(*swdev);
if (!swdev)
return -ENOMEM;
sw->swdev = swdev;
swdev->sw = sw;
INIT_LIST_HEAD(&swdev->bridge_list);
swdev_wq = alloc_ordered_workqueue("%s_ordered", 0, "prestera_br");
if (!swdev_wq) {
err = -ENOMEM;
goto err_alloc_wq;
}
err = prestera_switchdev_handler_init(swdev);
if (err)
goto err_swdev_init;
err = prestera_fdb_init(sw);
if (err)
goto err_fdb_init;
return 0;
err_fdb_init:
err_swdev_init:
destroy_workqueue(swdev_wq);
err_alloc_wq:
kfree(swdev);
return err;
}
void prestera_switchdev_fini(struct prestera_switch *sw)
{
struct prestera_switchdev *swdev = sw->swdev;
prestera_fdb_fini(sw);
prestera_switchdev_handler_fini(swdev);
destroy_workqueue(swdev_wq);
kfree(swdev);
}
