392 lines
11 KiB
C
392 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* net/dsa/dsa_priv.h - Hardware switch handling
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*/
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#ifndef __DSA_PRIV_H
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#define __DSA_PRIV_H
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#include <linux/if_bridge.h>
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#include <linux/phy.h>
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#include <linux/netdevice.h>
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#include <linux/netpoll.h>
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#include <net/dsa.h>
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#include <net/gro_cells.h>
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enum {
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DSA_NOTIFIER_AGEING_TIME,
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DSA_NOTIFIER_BRIDGE_JOIN,
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DSA_NOTIFIER_BRIDGE_LEAVE,
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DSA_NOTIFIER_FDB_ADD,
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DSA_NOTIFIER_FDB_DEL,
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DSA_NOTIFIER_HOST_FDB_ADD,
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DSA_NOTIFIER_HOST_FDB_DEL,
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DSA_NOTIFIER_HSR_JOIN,
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DSA_NOTIFIER_HSR_LEAVE,
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DSA_NOTIFIER_LAG_CHANGE,
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DSA_NOTIFIER_LAG_JOIN,
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DSA_NOTIFIER_LAG_LEAVE,
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DSA_NOTIFIER_MDB_ADD,
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DSA_NOTIFIER_MDB_DEL,
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DSA_NOTIFIER_HOST_MDB_ADD,
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DSA_NOTIFIER_HOST_MDB_DEL,
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DSA_NOTIFIER_VLAN_ADD,
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DSA_NOTIFIER_VLAN_DEL,
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DSA_NOTIFIER_MTU,
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DSA_NOTIFIER_TAG_PROTO,
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DSA_NOTIFIER_MRP_ADD,
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DSA_NOTIFIER_MRP_DEL,
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DSA_NOTIFIER_MRP_ADD_RING_ROLE,
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DSA_NOTIFIER_MRP_DEL_RING_ROLE,
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};
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/* DSA_NOTIFIER_AGEING_TIME */
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struct dsa_notifier_ageing_time_info {
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unsigned int ageing_time;
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};
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/* DSA_NOTIFIER_BRIDGE_* */
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struct dsa_notifier_bridge_info {
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struct net_device *br;
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int tree_index;
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int sw_index;
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int port;
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};
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/* DSA_NOTIFIER_FDB_* */
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struct dsa_notifier_fdb_info {
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int sw_index;
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int port;
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const unsigned char *addr;
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u16 vid;
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};
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/* DSA_NOTIFIER_MDB_* */
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struct dsa_notifier_mdb_info {
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const struct switchdev_obj_port_mdb *mdb;
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int sw_index;
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int port;
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};
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/* DSA_NOTIFIER_LAG_* */
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struct dsa_notifier_lag_info {
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struct net_device *lag;
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int sw_index;
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int port;
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struct netdev_lag_upper_info *info;
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};
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/* DSA_NOTIFIER_VLAN_* */
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struct dsa_notifier_vlan_info {
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const struct switchdev_obj_port_vlan *vlan;
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int sw_index;
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int port;
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struct netlink_ext_ack *extack;
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};
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/* DSA_NOTIFIER_MTU */
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struct dsa_notifier_mtu_info {
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bool targeted_match;
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int sw_index;
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int port;
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int mtu;
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};
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/* DSA_NOTIFIER_TAG_PROTO_* */
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struct dsa_notifier_tag_proto_info {
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const struct dsa_device_ops *tag_ops;
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};
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/* DSA_NOTIFIER_MRP_* */
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struct dsa_notifier_mrp_info {
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const struct switchdev_obj_mrp *mrp;
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int sw_index;
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int port;
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};
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/* DSA_NOTIFIER_MRP_* */
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struct dsa_notifier_mrp_ring_role_info {
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const struct switchdev_obj_ring_role_mrp *mrp;
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int sw_index;
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int port;
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};
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struct dsa_switchdev_event_work {
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struct dsa_switch *ds;
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int port;
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struct net_device *dev;
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struct work_struct work;
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unsigned long event;
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/* Specific for SWITCHDEV_FDB_ADD_TO_DEVICE and
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* SWITCHDEV_FDB_DEL_TO_DEVICE
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*/
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unsigned char addr[ETH_ALEN];
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u16 vid;
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bool host_addr;
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};
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/* DSA_NOTIFIER_HSR_* */
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struct dsa_notifier_hsr_info {
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struct net_device *hsr;
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int sw_index;
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int port;
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};
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struct dsa_slave_priv {
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/* Copy of CPU port xmit for faster access in slave transmit hot path */
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struct sk_buff * (*xmit)(struct sk_buff *skb,
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struct net_device *dev);
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struct gro_cells gcells;
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/* DSA port data, such as switch, port index, etc. */
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struct dsa_port *dp;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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struct netpoll *netpoll;
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#endif
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/* TC context */
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struct list_head mall_tc_list;
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};
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/* dsa.c */
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const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol);
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void dsa_tag_driver_put(const struct dsa_device_ops *ops);
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const struct dsa_device_ops *dsa_find_tagger_by_name(const char *buf);
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bool dsa_schedule_work(struct work_struct *work);
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const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
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static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops)
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{
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return ops->needed_headroom + ops->needed_tailroom;
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}
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/* master.c */
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int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp);
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void dsa_master_teardown(struct net_device *dev);
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static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
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int device, int port)
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{
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struct dsa_port *cpu_dp = dev->dsa_ptr;
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struct dsa_switch_tree *dst = cpu_dp->dst;
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struct dsa_port *dp;
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list_for_each_entry(dp, &dst->ports, list)
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if (dp->ds->index == device && dp->index == port &&
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dp->type == DSA_PORT_TYPE_USER)
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return dp->slave;
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return NULL;
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}
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/* port.c */
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void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
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const struct dsa_device_ops *tag_ops);
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int dsa_port_set_state(struct dsa_port *dp, u8 state);
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int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy);
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int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
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void dsa_port_disable_rt(struct dsa_port *dp);
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void dsa_port_disable(struct dsa_port *dp);
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int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
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struct netlink_ext_ack *extack);
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int dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br,
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struct netlink_ext_ack *extack);
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void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
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int dsa_port_lag_change(struct dsa_port *dp,
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struct netdev_lag_lower_state_info *linfo);
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int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev,
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struct netdev_lag_upper_info *uinfo,
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struct netlink_ext_ack *extack);
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int dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag_dev,
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struct netlink_ext_ack *extack);
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void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev);
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int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
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struct netlink_ext_ack *extack);
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bool dsa_port_skip_vlan_configuration(struct dsa_port *dp);
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int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock);
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int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
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bool targeted_match);
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int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
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u16 vid);
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int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
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u16 vid);
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int dsa_port_host_fdb_add(struct dsa_port *dp, const unsigned char *addr,
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u16 vid);
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int dsa_port_host_fdb_del(struct dsa_port *dp, const unsigned char *addr,
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u16 vid);
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int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data);
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int dsa_port_mdb_add(const struct dsa_port *dp,
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const struct switchdev_obj_port_mdb *mdb);
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int dsa_port_mdb_del(const struct dsa_port *dp,
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const struct switchdev_obj_port_mdb *mdb);
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int dsa_port_host_mdb_add(const struct dsa_port *dp,
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const struct switchdev_obj_port_mdb *mdb);
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int dsa_port_host_mdb_del(const struct dsa_port *dp,
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const struct switchdev_obj_port_mdb *mdb);
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int dsa_port_pre_bridge_flags(const struct dsa_port *dp,
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struct switchdev_brport_flags flags,
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struct netlink_ext_ack *extack);
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int dsa_port_bridge_flags(const struct dsa_port *dp,
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struct switchdev_brport_flags flags,
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struct netlink_ext_ack *extack);
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int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
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struct netlink_ext_ack *extack);
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int dsa_port_vlan_add(struct dsa_port *dp,
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const struct switchdev_obj_port_vlan *vlan,
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struct netlink_ext_ack *extack);
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int dsa_port_vlan_del(struct dsa_port *dp,
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const struct switchdev_obj_port_vlan *vlan);
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int dsa_port_mrp_add(const struct dsa_port *dp,
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const struct switchdev_obj_mrp *mrp);
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int dsa_port_mrp_del(const struct dsa_port *dp,
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const struct switchdev_obj_mrp *mrp);
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int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
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const struct switchdev_obj_ring_role_mrp *mrp);
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int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
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const struct switchdev_obj_ring_role_mrp *mrp);
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int dsa_port_link_register_of(struct dsa_port *dp);
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void dsa_port_link_unregister_of(struct dsa_port *dp);
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int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr);
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void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr);
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extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;
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static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp,
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struct net_device *dev)
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{
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return dsa_port_to_bridge_port(dp) == dev;
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}
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static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
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struct net_device *bridge_dev)
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{
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/* DSA ports connected to a bridge, and event was emitted
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* for the bridge.
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*/
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return dp->bridge_dev == bridge_dev;
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}
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/* Returns true if any port of this tree offloads the given net_device */
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static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst,
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struct net_device *dev)
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{
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struct dsa_port *dp;
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list_for_each_entry(dp, &dst->ports, list)
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if (dsa_port_offloads_bridge_port(dp, dev))
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return true;
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return false;
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}
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/* slave.c */
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extern const struct dsa_device_ops notag_netdev_ops;
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extern struct notifier_block dsa_slave_switchdev_notifier;
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extern struct notifier_block dsa_slave_switchdev_blocking_notifier;
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void dsa_slave_mii_bus_init(struct dsa_switch *ds);
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int dsa_slave_create(struct dsa_port *dp);
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void dsa_slave_destroy(struct net_device *slave_dev);
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int dsa_slave_suspend(struct net_device *slave_dev);
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int dsa_slave_resume(struct net_device *slave_dev);
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int dsa_slave_register_notifier(void);
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void dsa_slave_unregister_notifier(void);
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void dsa_slave_setup_tagger(struct net_device *slave);
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int dsa_slave_change_mtu(struct net_device *dev, int new_mtu);
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static inline struct dsa_port *dsa_slave_to_port(const struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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return p->dp;
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}
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static inline struct net_device *
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dsa_slave_to_master(const struct net_device *dev)
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{
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struct dsa_port *dp = dsa_slave_to_port(dev);
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return dp->cpu_dp->master;
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}
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/* If under a bridge with vlan_filtering=0, make sure to send pvid-tagged
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* frames as untagged, since the bridge will not untag them.
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*/
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static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb)
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{
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struct dsa_port *dp = dsa_slave_to_port(skb->dev);
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struct net_device *br = dp->bridge_dev;
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struct net_device *dev = skb->dev;
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struct net_device *upper_dev;
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u16 vid, pvid, proto;
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int err;
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if (!br || br_vlan_enabled(br))
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return skb;
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err = br_vlan_get_proto(br, &proto);
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if (err)
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return skb;
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/* Move VLAN tag from data to hwaccel */
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if (!skb_vlan_tag_present(skb) && skb->protocol == htons(proto)) {
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skb = skb_vlan_untag(skb);
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if (!skb)
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return NULL;
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}
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if (!skb_vlan_tag_present(skb))
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return skb;
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vid = skb_vlan_tag_get_id(skb);
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/* We already run under an RCU read-side critical section since
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* we are called from netif_receive_skb_list_internal().
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*/
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err = br_vlan_get_pvid_rcu(dev, &pvid);
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if (err)
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return skb;
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if (vid != pvid)
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return skb;
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/* The sad part about attempting to untag from DSA is that we
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* don't know, unless we check, if the skb will end up in
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* the bridge's data path - br_allowed_ingress() - or not.
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* For example, there might be an 8021q upper for the
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* default_pvid of the bridge, which will steal VLAN-tagged traffic
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* from the bridge's data path. This is a configuration that DSA
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* supports because vlan_filtering is 0. In that case, we should
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* definitely keep the tag, to make sure it keeps working.
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*/
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upper_dev = __vlan_find_dev_deep_rcu(br, htons(proto), vid);
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if (upper_dev)
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return skb;
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__vlan_hwaccel_clear_tag(skb);
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return skb;
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}
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/* switch.c */
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int dsa_switch_register_notifier(struct dsa_switch *ds);
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void dsa_switch_unregister_notifier(struct dsa_switch *ds);
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/* dsa2.c */
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void dsa_lag_map(struct dsa_switch_tree *dst, struct net_device *lag);
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void dsa_lag_unmap(struct dsa_switch_tree *dst, struct net_device *lag);
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int dsa_tree_notify(struct dsa_switch_tree *dst, unsigned long e, void *v);
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int dsa_broadcast(unsigned long e, void *v);
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int dsa_tree_change_tag_proto(struct dsa_switch_tree *dst,
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struct net_device *master,
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const struct dsa_device_ops *tag_ops,
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const struct dsa_device_ops *old_tag_ops);
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extern struct list_head dsa_tree_list;
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#endif
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