1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2
  3#ifndef _BR_PRIVATE_MRP_H_
  4#define _BR_PRIVATE_MRP_H_
  5
  6#include "br_private.h"
  7#include <uapi/linux/mrp_bridge.h>
  8
  9#define MRP_OPT_PADDING		0x2
 10
 11struct br_mrp {
 12	/* list of mrp instances */
 13	struct hlist_node		list;
 14
 15	struct net_bridge_port __rcu	*p_port;
 16	struct net_bridge_port __rcu	*s_port;
 17	struct net_bridge_port __rcu	*i_port;
 18
 19	u32				ring_id;
 20	u16				in_id;
 21	u16				prio;
 22
 23	enum br_mrp_ring_role_type	ring_role;
 24	u8				ring_role_offloaded;
 25	enum br_mrp_ring_state_type	ring_state;
 26	u32				ring_transitions;
 27
 28	enum br_mrp_in_role_type	in_role;
 29	u8				in_role_offloaded;
 30	enum br_mrp_in_state_type	in_state;
 31	u32				in_transitions;
 32
 33	struct delayed_work		test_work;
 34	u32				test_interval;
 35	unsigned long			test_end;
 36	u32				test_count_miss;
 37	u32				test_max_miss;
 38	bool				test_monitor;
 39
 40	struct delayed_work		in_test_work;
 41	u32				in_test_interval;
 42	unsigned long			in_test_end;
 43	u32				in_test_count_miss;
 44	u32				in_test_max_miss;
 45
 46	u32				seq_id;
 47
 48	struct rcu_head			rcu;
 49};
 50
 51/* This type is returned by br_mrp_switchdev functions that allow to have a SW
 52 * backup in case the HW can't implement completely the protocol.
 53 * BR_MRP_NONE - means the HW can't run at all the protocol, so the SW stops
 54 *               configuring the node anymore.
 55 * BR_MRP_SW - the HW can help the SW to run the protocol, by redirecting MRP
 56 *             frames to CPU.
 57 * BR_MRP_HW - the HW can implement completely the protocol.
 58 */
 59enum br_mrp_hw_support {
 60	BR_MRP_NONE,
 61	BR_MRP_SW,
 62	BR_MRP_HW,
 63};
 64
 65/* br_mrp.c */
 66int br_mrp_add(struct net_bridge *br, struct br_mrp_instance *instance);
 67int br_mrp_del(struct net_bridge *br, struct br_mrp_instance *instance);
 68int br_mrp_set_port_state(struct net_bridge_port *p,
 69			  enum br_mrp_port_state_type state);
 70int br_mrp_set_port_role(struct net_bridge_port *p,
 71			 enum br_mrp_port_role_type role);
 72int br_mrp_set_ring_state(struct net_bridge *br,
 73			  struct br_mrp_ring_state *state);
 74int br_mrp_set_ring_role(struct net_bridge *br, struct br_mrp_ring_role *role);
 75int br_mrp_start_test(struct net_bridge *br, struct br_mrp_start_test *test);
 76int br_mrp_set_in_state(struct net_bridge *br, struct br_mrp_in_state *state);
 77int br_mrp_set_in_role(struct net_bridge *br, struct br_mrp_in_role *role);
 78int br_mrp_start_in_test(struct net_bridge *br,
 79			 struct br_mrp_start_in_test *test);
 80
 81/* br_mrp_switchdev.c */
 82int br_mrp_switchdev_add(struct net_bridge *br, struct br_mrp *mrp);
 83int br_mrp_switchdev_del(struct net_bridge *br, struct br_mrp *mrp);
 84enum br_mrp_hw_support
 85br_mrp_switchdev_set_ring_role(struct net_bridge *br, struct br_mrp *mrp,
 86			       enum br_mrp_ring_role_type role);
 87int br_mrp_switchdev_set_ring_state(struct net_bridge *br, struct br_mrp *mrp,
 88				    enum br_mrp_ring_state_type state);
 89enum br_mrp_hw_support
 90br_mrp_switchdev_send_ring_test(struct net_bridge *br, struct br_mrp *mrp,
 91				u32 interval, u8 max_miss, u32 period,
 92				bool monitor);
 93int br_mrp_port_switchdev_set_state(struct net_bridge_port *p, u32 state);
 94int br_mrp_port_switchdev_set_role(struct net_bridge_port *p,
 95				   enum br_mrp_port_role_type role);
 96enum br_mrp_hw_support
 97br_mrp_switchdev_set_in_role(struct net_bridge *br, struct br_mrp *mrp,
 98			     u16 in_id, u32 ring_id,
 99			     enum br_mrp_in_role_type role);
100int br_mrp_switchdev_set_in_state(struct net_bridge *br, struct br_mrp *mrp,
101				  enum br_mrp_in_state_type state);
102enum br_mrp_hw_support
103br_mrp_switchdev_send_in_test(struct net_bridge *br, struct br_mrp *mrp,
104			      u32 interval, u8 max_miss, u32 period);
105
106/* br_mrp_netlink.c  */
107int br_mrp_ring_port_open(struct net_device *dev, u8 loc);
108int br_mrp_in_port_open(struct net_device *dev, u8 loc);
109
110/* MRP protocol data units */
111struct br_mrp_tlv_hdr {
112	__u8 type;
113	__u8 length;
114};
115
116struct br_mrp_common_hdr {
117	__be16 seq_id;
118	__u8 domain[MRP_DOMAIN_UUID_LENGTH];
119};
120
121struct br_mrp_ring_test_hdr {
122	__be16 prio;
123	__u8 sa[ETH_ALEN];
124	__be16 port_role;
125	__be16 state;
126	__be16 transitions;
127	__be32 timestamp;
128} __attribute__((__packed__));
129
130struct br_mrp_in_test_hdr {
131	__be16 id;
132	__u8 sa[ETH_ALEN];
133	__be16 port_role;
134	__be16 state;
135	__be16 transitions;
136	__be32 timestamp;
137} __attribute__((__packed__));
138
139struct br_mrp_oui_hdr {
140	__u8 oui[MRP_OUI_LENGTH];
141};
142
143struct br_mrp_sub_option1_hdr {
144	__u8 type;
145	__u8 data[MRP_MANUFACTURE_DATA_LENGTH];
146};
147
148#endif /* _BR_PRIVATE_MRP_H */