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389 lines
11 KiB
389 lines
11 KiB
/* 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_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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