582 строки
20 KiB
C
582 строки
20 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/if_vlan.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/netpoll.h>
|
|
#include <net/dsa.h>
|
|
#include <net/gro_cells.h>
|
|
|
|
#define DSA_MAX_NUM_OFFLOADING_BRIDGES BITS_PER_LONG
|
|
|
|
enum {
|
|
DSA_NOTIFIER_AGEING_TIME,
|
|
DSA_NOTIFIER_BRIDGE_JOIN,
|
|
DSA_NOTIFIER_BRIDGE_LEAVE,
|
|
DSA_NOTIFIER_FDB_ADD,
|
|
DSA_NOTIFIER_FDB_DEL,
|
|
DSA_NOTIFIER_HOST_FDB_ADD,
|
|
DSA_NOTIFIER_HOST_FDB_DEL,
|
|
DSA_NOTIFIER_LAG_FDB_ADD,
|
|
DSA_NOTIFIER_LAG_FDB_DEL,
|
|
DSA_NOTIFIER_LAG_CHANGE,
|
|
DSA_NOTIFIER_LAG_JOIN,
|
|
DSA_NOTIFIER_LAG_LEAVE,
|
|
DSA_NOTIFIER_MDB_ADD,
|
|
DSA_NOTIFIER_MDB_DEL,
|
|
DSA_NOTIFIER_HOST_MDB_ADD,
|
|
DSA_NOTIFIER_HOST_MDB_DEL,
|
|
DSA_NOTIFIER_VLAN_ADD,
|
|
DSA_NOTIFIER_VLAN_DEL,
|
|
DSA_NOTIFIER_HOST_VLAN_ADD,
|
|
DSA_NOTIFIER_HOST_VLAN_DEL,
|
|
DSA_NOTIFIER_MTU,
|
|
DSA_NOTIFIER_TAG_PROTO,
|
|
DSA_NOTIFIER_TAG_PROTO_CONNECT,
|
|
DSA_NOTIFIER_TAG_PROTO_DISCONNECT,
|
|
DSA_NOTIFIER_TAG_8021Q_VLAN_ADD,
|
|
DSA_NOTIFIER_TAG_8021Q_VLAN_DEL,
|
|
DSA_NOTIFIER_MASTER_STATE_CHANGE,
|
|
};
|
|
|
|
/* DSA_NOTIFIER_AGEING_TIME */
|
|
struct dsa_notifier_ageing_time_info {
|
|
unsigned int ageing_time;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_BRIDGE_* */
|
|
struct dsa_notifier_bridge_info {
|
|
const struct dsa_port *dp;
|
|
struct dsa_bridge bridge;
|
|
bool tx_fwd_offload;
|
|
struct netlink_ext_ack *extack;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_FDB_* */
|
|
struct dsa_notifier_fdb_info {
|
|
const struct dsa_port *dp;
|
|
const unsigned char *addr;
|
|
u16 vid;
|
|
struct dsa_db db;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_LAG_FDB_* */
|
|
struct dsa_notifier_lag_fdb_info {
|
|
struct dsa_lag *lag;
|
|
const unsigned char *addr;
|
|
u16 vid;
|
|
struct dsa_db db;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_MDB_* */
|
|
struct dsa_notifier_mdb_info {
|
|
const struct dsa_port *dp;
|
|
const struct switchdev_obj_port_mdb *mdb;
|
|
struct dsa_db db;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_LAG_* */
|
|
struct dsa_notifier_lag_info {
|
|
const struct dsa_port *dp;
|
|
struct dsa_lag lag;
|
|
struct netdev_lag_upper_info *info;
|
|
struct netlink_ext_ack *extack;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_VLAN_* */
|
|
struct dsa_notifier_vlan_info {
|
|
const struct dsa_port *dp;
|
|
const struct switchdev_obj_port_vlan *vlan;
|
|
struct netlink_ext_ack *extack;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_MTU */
|
|
struct dsa_notifier_mtu_info {
|
|
const struct dsa_port *dp;
|
|
int mtu;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_TAG_PROTO_* */
|
|
struct dsa_notifier_tag_proto_info {
|
|
const struct dsa_device_ops *tag_ops;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_TAG_8021Q_VLAN_* */
|
|
struct dsa_notifier_tag_8021q_vlan_info {
|
|
const struct dsa_port *dp;
|
|
u16 vid;
|
|
};
|
|
|
|
/* DSA_NOTIFIER_MASTER_STATE_CHANGE */
|
|
struct dsa_notifier_master_state_info {
|
|
const struct net_device *master;
|
|
bool operational;
|
|
};
|
|
|
|
struct dsa_switchdev_event_work {
|
|
struct net_device *dev;
|
|
struct net_device *orig_dev;
|
|
struct work_struct work;
|
|
unsigned long event;
|
|
/* Specific for SWITCHDEV_FDB_ADD_TO_DEVICE and
|
|
* SWITCHDEV_FDB_DEL_TO_DEVICE
|
|
*/
|
|
unsigned char addr[ETH_ALEN];
|
|
u16 vid;
|
|
bool host_addr;
|
|
};
|
|
|
|
enum dsa_standalone_event {
|
|
DSA_UC_ADD,
|
|
DSA_UC_DEL,
|
|
DSA_MC_ADD,
|
|
DSA_MC_DEL,
|
|
};
|
|
|
|
struct dsa_standalone_event_work {
|
|
struct work_struct work;
|
|
struct net_device *dev;
|
|
enum dsa_standalone_event event;
|
|
unsigned char addr[ETH_ALEN];
|
|
u16 vid;
|
|
};
|
|
|
|
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);
|
|
const struct dsa_device_ops *dsa_find_tagger_by_name(const char *buf);
|
|
|
|
bool dsa_db_equal(const struct dsa_db *a, const struct dsa_db *b);
|
|
|
|
bool dsa_schedule_work(struct work_struct *work);
|
|
const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
|
|
|
|
static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops)
|
|
{
|
|
return ops->needed_headroom + ops->needed_tailroom;
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* netlink.c */
|
|
extern struct rtnl_link_ops dsa_link_ops __read_mostly;
|
|
|
|
/* port.c */
|
|
void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
|
|
const struct dsa_device_ops *tag_ops);
|
|
int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age);
|
|
int dsa_port_set_mst_state(struct dsa_port *dp,
|
|
const struct switchdev_mst_state *state,
|
|
struct netlink_ext_ack *extack);
|
|
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,
|
|
struct netlink_ext_ack *extack);
|
|
void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br);
|
|
void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
|
|
int dsa_port_lag_change(struct dsa_port *dp,
|
|
struct netdev_lag_lower_state_info *linfo);
|
|
int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev,
|
|
struct netdev_lag_upper_info *uinfo,
|
|
struct netlink_ext_ack *extack);
|
|
void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag_dev);
|
|
void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev);
|
|
int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
|
|
struct netlink_ext_ack *extack);
|
|
bool dsa_port_skip_vlan_configuration(struct dsa_port *dp);
|
|
int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock);
|
|
int dsa_port_mst_enable(struct dsa_port *dp, bool on,
|
|
struct netlink_ext_ack *extack);
|
|
int dsa_port_vlan_msti(struct dsa_port *dp,
|
|
const struct switchdev_vlan_msti *msti);
|
|
int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu);
|
|
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_standalone_host_fdb_add(struct dsa_port *dp,
|
|
const unsigned char *addr, u16 vid);
|
|
int dsa_port_standalone_host_fdb_del(struct dsa_port *dp,
|
|
const unsigned char *addr, u16 vid);
|
|
int dsa_port_bridge_host_fdb_add(struct dsa_port *dp, const unsigned char *addr,
|
|
u16 vid);
|
|
int dsa_port_bridge_host_fdb_del(struct dsa_port *dp, const unsigned char *addr,
|
|
u16 vid);
|
|
int dsa_port_lag_fdb_add(struct dsa_port *dp, const unsigned char *addr,
|
|
u16 vid);
|
|
int dsa_port_lag_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);
|
|
int dsa_port_mdb_del(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb);
|
|
int dsa_port_standalone_host_mdb_add(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb);
|
|
int dsa_port_standalone_host_mdb_del(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb);
|
|
int dsa_port_bridge_host_mdb_add(const struct dsa_port *dp,
|
|
const struct switchdev_obj_port_mdb *mdb);
|
|
int dsa_port_bridge_host_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,
|
|
struct switchdev_brport_flags flags,
|
|
struct netlink_ext_ack *extack);
|
|
int dsa_port_bridge_flags(struct dsa_port *dp,
|
|
struct switchdev_brport_flags flags,
|
|
struct netlink_ext_ack *extack);
|
|
int dsa_port_vlan_add(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct netlink_ext_ack *extack);
|
|
int dsa_port_vlan_del(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan);
|
|
int dsa_port_host_vlan_add(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct netlink_ext_ack *extack);
|
|
int dsa_port_host_vlan_del(struct dsa_port *dp,
|
|
const struct switchdev_obj_port_vlan *vlan);
|
|
int dsa_port_mrp_add(const struct dsa_port *dp,
|
|
const struct switchdev_obj_mrp *mrp);
|
|
int dsa_port_mrp_del(const struct dsa_port *dp,
|
|
const struct switchdev_obj_mrp *mrp);
|
|
int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
|
|
const struct switchdev_obj_ring_role_mrp *mrp);
|
|
int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
|
|
const struct switchdev_obj_ring_role_mrp *mrp);
|
|
int dsa_port_phylink_create(struct dsa_port *dp);
|
|
int dsa_shared_port_link_register_of(struct dsa_port *dp);
|
|
void dsa_shared_port_link_unregister_of(struct dsa_port *dp);
|
|
int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr);
|
|
void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr);
|
|
int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid, bool broadcast);
|
|
void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid, bool broadcast);
|
|
void dsa_port_set_host_flood(struct dsa_port *dp, bool uc, bool mc);
|
|
int dsa_port_change_master(struct dsa_port *dp, struct net_device *master,
|
|
struct netlink_ext_ack *extack);
|
|
|
|
/* slave.c */
|
|
extern const struct dsa_device_ops notag_netdev_ops;
|
|
extern struct notifier_block dsa_slave_switchdev_notifier;
|
|
extern struct notifier_block dsa_slave_switchdev_blocking_notifier;
|
|
|
|
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);
|
|
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);
|
|
void dsa_slave_sync_ha(struct net_device *dev);
|
|
void dsa_slave_unsync_ha(struct net_device *dev);
|
|
void dsa_slave_setup_tagger(struct net_device *slave);
|
|
int dsa_slave_change_mtu(struct net_device *dev, int new_mtu);
|
|
int dsa_slave_change_master(struct net_device *dev, struct net_device *master,
|
|
struct netlink_ext_ack *extack);
|
|
int dsa_slave_manage_vlan_filtering(struct net_device *dev,
|
|
bool vlan_filtering);
|
|
|
|
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 dsa_port_to_master(dp);
|
|
}
|
|
|
|
/* 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 = dsa_port_bridge_dev_get(dp);
|
|
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;
|
|
}
|
|
|
|
/* For switches without hardware support for DSA tagging to be able
|
|
* to support termination through the bridge.
|
|
*/
|
|
static inline struct net_device *
|
|
dsa_find_designated_bridge_port_by_vid(struct net_device *master, u16 vid)
|
|
{
|
|
struct dsa_port *cpu_dp = master->dsa_ptr;
|
|
struct dsa_switch_tree *dst = cpu_dp->dst;
|
|
struct bridge_vlan_info vinfo;
|
|
struct net_device *slave;
|
|
struct dsa_port *dp;
|
|
int err;
|
|
|
|
list_for_each_entry(dp, &dst->ports, list) {
|
|
if (dp->type != DSA_PORT_TYPE_USER)
|
|
continue;
|
|
|
|
if (!dp->bridge)
|
|
continue;
|
|
|
|
if (dp->stp_state != BR_STATE_LEARNING &&
|
|
dp->stp_state != BR_STATE_FORWARDING)
|
|
continue;
|
|
|
|
/* Since the bridge might learn this packet, keep the CPU port
|
|
* affinity with the port that will be used for the reply on
|
|
* xmit.
|
|
*/
|
|
if (dp->cpu_dp != cpu_dp)
|
|
continue;
|
|
|
|
slave = dp->slave;
|
|
|
|
err = br_vlan_get_info_rcu(slave, vid, &vinfo);
|
|
if (err)
|
|
continue;
|
|
|
|
return slave;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* If the ingress port offloads the bridge, we mark the frame as autonomously
|
|
* forwarded by hardware, so the software bridge doesn't forward in twice, back
|
|
* to us, because we already did. However, if we're in fallback mode and we do
|
|
* software bridging, we are not offloading it, therefore the dp->bridge
|
|
* pointer is not populated, and flooding needs to be done by software (we are
|
|
* effectively operating in standalone ports mode).
|
|
*/
|
|
static inline void dsa_default_offload_fwd_mark(struct sk_buff *skb)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(skb->dev);
|
|
|
|
skb->offload_fwd_mark = !!(dp->bridge);
|
|
}
|
|
|
|
/* Helper for removing DSA header tags from packets in the RX path.
|
|
* Must not be called before skb_pull(len).
|
|
* skb->data
|
|
* |
|
|
* v
|
|
* | | | | | | | | | | | | | | | | | | |
|
|
* +-----------------------+-----------------------+---------------+-------+
|
|
* | Destination MAC | Source MAC | DSA header | EType |
|
|
* +-----------------------+-----------------------+---------------+-------+
|
|
* | |
|
|
* <----- len -----> <----- len ----->
|
|
* |
|
|
* >>>>>>> v
|
|
* >>>>>>> | | | | | | | | | | | | | | |
|
|
* >>>>>>> +-----------------------+-----------------------+-------+
|
|
* >>>>>>> | Destination MAC | Source MAC | EType |
|
|
* +-----------------------+-----------------------+-------+
|
|
* ^
|
|
* |
|
|
* skb->data
|
|
*/
|
|
static inline void dsa_strip_etype_header(struct sk_buff *skb, int len)
|
|
{
|
|
memmove(skb->data - ETH_HLEN, skb->data - ETH_HLEN - len, 2 * ETH_ALEN);
|
|
}
|
|
|
|
/* Helper for creating space for DSA header tags in TX path packets.
|
|
* Must not be called before skb_push(len).
|
|
*
|
|
* Before:
|
|
*
|
|
* <<<<<<< | | | | | | | | | | | | | | |
|
|
* ^ <<<<<<< +-----------------------+-----------------------+-------+
|
|
* | <<<<<<< | Destination MAC | Source MAC | EType |
|
|
* | +-----------------------+-----------------------+-------+
|
|
* <----- len ----->
|
|
* |
|
|
* |
|
|
* skb->data
|
|
*
|
|
* After:
|
|
*
|
|
* | | | | | | | | | | | | | | | | | | |
|
|
* +-----------------------+-----------------------+---------------+-------+
|
|
* | Destination MAC | Source MAC | DSA header | EType |
|
|
* +-----------------------+-----------------------+---------------+-------+
|
|
* ^ | |
|
|
* | <----- len ----->
|
|
* skb->data
|
|
*/
|
|
static inline void dsa_alloc_etype_header(struct sk_buff *skb, int len)
|
|
{
|
|
memmove(skb->data, skb->data + len, 2 * ETH_ALEN);
|
|
}
|
|
|
|
/* On RX, eth_type_trans() on the DSA master pulls ETH_HLEN bytes starting from
|
|
* skb_mac_header(skb), which leaves skb->data pointing at the first byte after
|
|
* what the DSA master perceives as the EtherType (the beginning of the L3
|
|
* protocol). Since DSA EtherType header taggers treat the EtherType as part of
|
|
* the DSA tag itself, and the EtherType is 2 bytes in length, the DSA header
|
|
* is located 2 bytes behind skb->data. Note that EtherType in this context
|
|
* means the first 2 bytes of the DSA header, not the encapsulated EtherType
|
|
* that will become visible after the DSA header is stripped.
|
|
*/
|
|
static inline void *dsa_etype_header_pos_rx(struct sk_buff *skb)
|
|
{
|
|
return skb->data - 2;
|
|
}
|
|
|
|
/* On TX, skb->data points to skb_mac_header(skb), which means that EtherType
|
|
* header taggers start exactly where the EtherType is (the EtherType is
|
|
* treated as part of the DSA header).
|
|
*/
|
|
static inline void *dsa_etype_header_pos_tx(struct sk_buff *skb)
|
|
{
|
|
return skb->data + 2 * ETH_ALEN;
|
|
}
|
|
|
|
/* switch.c */
|
|
int dsa_switch_register_notifier(struct dsa_switch *ds);
|
|
void dsa_switch_unregister_notifier(struct dsa_switch *ds);
|
|
|
|
static inline bool dsa_switch_supports_uc_filtering(struct dsa_switch *ds)
|
|
{
|
|
return ds->ops->port_fdb_add && ds->ops->port_fdb_del &&
|
|
ds->fdb_isolation && !ds->vlan_filtering_is_global &&
|
|
!ds->needs_standalone_vlan_filtering;
|
|
}
|
|
|
|
static inline bool dsa_switch_supports_mc_filtering(struct dsa_switch *ds)
|
|
{
|
|
return ds->ops->port_mdb_add && ds->ops->port_mdb_del &&
|
|
ds->fdb_isolation && !ds->vlan_filtering_is_global &&
|
|
!ds->needs_standalone_vlan_filtering;
|
|
}
|
|
|
|
/* dsa2.c */
|
|
void dsa_lag_map(struct dsa_switch_tree *dst, struct dsa_lag *lag);
|
|
void dsa_lag_unmap(struct dsa_switch_tree *dst, struct dsa_lag *lag);
|
|
struct dsa_lag *dsa_tree_lag_find(struct dsa_switch_tree *dst,
|
|
const struct net_device *lag_dev);
|
|
struct net_device *dsa_tree_find_first_master(struct dsa_switch_tree *dst);
|
|
int dsa_tree_notify(struct dsa_switch_tree *dst, unsigned long e, void *v);
|
|
int dsa_broadcast(unsigned long e, void *v);
|
|
int dsa_tree_change_tag_proto(struct dsa_switch_tree *dst,
|
|
const struct dsa_device_ops *tag_ops,
|
|
const struct dsa_device_ops *old_tag_ops);
|
|
void dsa_tree_master_admin_state_change(struct dsa_switch_tree *dst,
|
|
struct net_device *master,
|
|
bool up);
|
|
void dsa_tree_master_oper_state_change(struct dsa_switch_tree *dst,
|
|
struct net_device *master,
|
|
bool up);
|
|
unsigned int dsa_bridge_num_get(const struct net_device *bridge_dev, int max);
|
|
void dsa_bridge_num_put(const struct net_device *bridge_dev,
|
|
unsigned int bridge_num);
|
|
struct dsa_bridge *dsa_tree_bridge_find(struct dsa_switch_tree *dst,
|
|
const struct net_device *br);
|
|
|
|
/* tag_8021q.c */
|
|
int dsa_switch_tag_8021q_vlan_add(struct dsa_switch *ds,
|
|
struct dsa_notifier_tag_8021q_vlan_info *info);
|
|
int dsa_switch_tag_8021q_vlan_del(struct dsa_switch *ds,
|
|
struct dsa_notifier_tag_8021q_vlan_info *info);
|
|
|
|
extern struct list_head dsa_tree_list;
|
|
|
|
#endif
|