263 lines
7.5 KiB
C
263 lines
7.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* net/dsa/dsa_priv.h - Hardware switch handling
|
|
* Copyright (c) 2008-2009 Marvell Semiconductor
|
|
*/
|
|
|
|
#ifndef __DSA_PRIV_H
|
|
#define __DSA_PRIV_H
|
|
|
|
#include <linux/if_bridge.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/netpoll.h>
|
|
#include <net/dsa.h>
|
|
#include <net/gro_cells.h>
|
|
|
|
enum {
|
|
DSA_NOTIFIER_AGEING_TIME,
|
|
DSA_NOTIFIER_BRIDGE_JOIN,
|
|
DSA_NOTIFIER_BRIDGE_LEAVE,
|
|
DSA_NOTIFIER_FDB_ADD,
|
|
DSA_NOTIFIER_FDB_DEL,
|
|
DSA_NOTIFIER_MDB_ADD,
|
|
DSA_NOTIFIER_MDB_DEL,
|
|
DSA_NOTIFIER_VLAN_ADD,
|
|
DSA_NOTIFIER_VLAN_DEL,
|
|
DSA_NOTIFIER_MTU,
|
|
};
|
|
|
|
/* DSA_NOTIFIER_AGEING_TIME */
|
|
struct dsa_notifier_ageing_time_info {
|
|
struct switchdev_trans *trans;
|
|
unsigned int ageing_time;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_BRIDGE_* */
|
|
struct dsa_notifier_bridge_info {
|
|
struct net_device *br;
|
|
int tree_index;
|
|
int sw_index;
|
|
int port;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_FDB_* */
|
|
struct dsa_notifier_fdb_info {
|
|
int sw_index;
|
|
int port;
|
|
const unsigned char *addr;
|
|
u16 vid;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_MDB_* */
|
|
struct dsa_notifier_mdb_info {
|
|
const struct switchdev_obj_port_mdb *mdb;
|
|
struct switchdev_trans *trans;
|
|
int sw_index;
|
|
int port;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_VLAN_* */
|
|
struct dsa_notifier_vlan_info {
|
|
const struct switchdev_obj_port_vlan *vlan;
|
|
struct switchdev_trans *trans;
|
|
int sw_index;
|
|
int port;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_MTU */
|
|
struct dsa_notifier_mtu_info {
|
|
bool propagate_upstream;
|
|
int sw_index;
|
|
int port;
|
|
int mtu;
|
|
};
|
|
|
|
struct dsa_slave_priv {
|
|
/* Copy of CPU port xmit for faster access in slave transmit hot path */
|
|
struct sk_buff * (*xmit)(struct sk_buff *skb,
|
|
struct net_device *dev);
|
|
|
|
struct gro_cells gcells;
|
|
|
|
/* DSA port data, such as switch, port index, etc. */
|
|
struct dsa_port *dp;
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
struct netpoll *netpoll;
|
|
#endif
|
|
|
|
/* TC context */
|
|
struct list_head mall_tc_list;
|
|
};
|
|
|
|
/* dsa.c */
|
|
const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol);
|
|
void dsa_tag_driver_put(const struct dsa_device_ops *ops);
|
|
|
|
bool dsa_schedule_work(struct work_struct *work);
|
|
const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
|
|
|
|
int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev,
|
|
const unsigned char *addr, u16 vid,
|
|
u16 flags,
|
|
struct netlink_ext_ack *extack);
|
|
int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev,
|
|
const unsigned char *addr, u16 vid);
|
|
|
|
/* master.c */
|
|
int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp);
|
|
void dsa_master_teardown(struct net_device *dev);
|
|
|
|
static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
|
|
int device, int port)
|
|
{
|
|
struct dsa_port *cpu_dp = dev->dsa_ptr;
|
|
struct dsa_switch_tree *dst = cpu_dp->dst;
|
|
struct dsa_port *dp;
|
|
|
|
list_for_each_entry(dp, &dst->ports, list)
|
|
if (dp->ds->index == device && dp->index == port &&
|
|
dp->type == DSA_PORT_TYPE_USER)
|
|
return dp->slave;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* port.c */
|
|
int dsa_port_set_state(struct dsa_port *dp, u8 state,
|
|
struct switchdev_trans *trans);
|
|
int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy);
|
|
int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
|
|
void dsa_port_disable_rt(struct dsa_port *dp);
|
|
void dsa_port_disable(struct dsa_port *dp);
|
|
int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br);
|
|
void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
|
|
int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
|
|
struct switchdev_trans *trans);
|
|
bool dsa_port_skip_vlan_configuration(struct dsa_port *dp);
|
|
int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
|
|
struct switchdev_trans *trans);
|
|
int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
|
|
bool propagate_upstream);
|
|
int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
|
|
u16 vid);
|
|
int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
|
|
u16 vid);
|
|
int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data);
|
|
int dsa_port_mdb_add(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb,
|
|
struct switchdev_trans *trans);
|
|
int dsa_port_mdb_del(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb);
|
|
int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags,
|
|
struct switchdev_trans *trans);
|
|
int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags,
|
|
struct switchdev_trans *trans);
|
|
int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
|
|
struct switchdev_trans *trans);
|
|
int dsa_port_vlan_add(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct switchdev_trans *trans);
|
|
int dsa_port_vlan_del(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan);
|
|
int dsa_port_link_register_of(struct dsa_port *dp);
|
|
void dsa_port_link_unregister_of(struct dsa_port *dp);
|
|
extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;
|
|
|
|
/* slave.c */
|
|
extern const struct dsa_device_ops notag_netdev_ops;
|
|
void dsa_slave_mii_bus_init(struct dsa_switch *ds);
|
|
int dsa_slave_create(struct dsa_port *dp);
|
|
void dsa_slave_destroy(struct net_device *slave_dev);
|
|
bool dsa_slave_dev_check(const struct net_device *dev);
|
|
int dsa_slave_suspend(struct net_device *slave_dev);
|
|
int dsa_slave_resume(struct net_device *slave_dev);
|
|
int dsa_slave_register_notifier(void);
|
|
void dsa_slave_unregister_notifier(void);
|
|
|
|
static inline struct dsa_port *dsa_slave_to_port(const struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
return p->dp;
|
|
}
|
|
|
|
static inline struct net_device *
|
|
dsa_slave_to_master(const struct net_device *dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return dp->cpu_dp->master;
|
|
}
|
|
|
|
/* If under a bridge with vlan_filtering=0, make sure to send pvid-tagged
|
|
* frames as untagged, since the bridge will not untag them.
|
|
*/
|
|
static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(skb->dev);
|
|
struct net_device *br = dp->bridge_dev;
|
|
struct net_device *dev = skb->dev;
|
|
struct net_device *upper_dev;
|
|
u16 vid, pvid, proto;
|
|
int err;
|
|
|
|
if (!br || br_vlan_enabled(br))
|
|
return skb;
|
|
|
|
err = br_vlan_get_proto(br, &proto);
|
|
if (err)
|
|
return skb;
|
|
|
|
/* Move VLAN tag from data to hwaccel */
|
|
if (!skb_vlan_tag_present(skb) && skb->protocol == htons(proto)) {
|
|
skb = skb_vlan_untag(skb);
|
|
if (!skb)
|
|
return NULL;
|
|
}
|
|
|
|
if (!skb_vlan_tag_present(skb))
|
|
return skb;
|
|
|
|
vid = skb_vlan_tag_get_id(skb);
|
|
|
|
/* We already run under an RCU read-side critical section since
|
|
* we are called from netif_receive_skb_list_internal().
|
|
*/
|
|
err = br_vlan_get_pvid_rcu(dev, &pvid);
|
|
if (err)
|
|
return skb;
|
|
|
|
if (vid != pvid)
|
|
return skb;
|
|
|
|
/* The sad part about attempting to untag from DSA is that we
|
|
* don't know, unless we check, if the skb will end up in
|
|
* the bridge's data path - br_allowed_ingress() - or not.
|
|
* For example, there might be an 8021q upper for the
|
|
* default_pvid of the bridge, which will steal VLAN-tagged traffic
|
|
* from the bridge's data path. This is a configuration that DSA
|
|
* supports because vlan_filtering is 0. In that case, we should
|
|
* definitely keep the tag, to make sure it keeps working.
|
|
*/
|
|
upper_dev = __vlan_find_dev_deep_rcu(br, htons(proto), vid);
|
|
if (upper_dev)
|
|
return skb;
|
|
|
|
__vlan_hwaccel_clear_tag(skb);
|
|
|
|
return skb;
|
|
}
|
|
|
|
/* switch.c */
|
|
int dsa_switch_register_notifier(struct dsa_switch *ds);
|
|
void dsa_switch_unregister_notifier(struct dsa_switch *ds);
|
|
|
|
/* dsa2.c */
|
|
extern struct list_head dsa_tree_list;
|
|
|
|
#endif
|