Merge tag 'block-5.14-2021-08-20' of git://git.kernel.dk/linux-block
[linux-block.git] / net / bridge / br_private_mrp.h
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
11 struct 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  */
59 enum br_mrp_hw_support {
60         BR_MRP_NONE,
61         BR_MRP_SW,
62         BR_MRP_HW,
63 };
64
65 /* br_mrp.c */
66 int br_mrp_add(struct net_bridge *br, struct br_mrp_instance *instance);
67 int br_mrp_del(struct net_bridge *br, struct br_mrp_instance *instance);
68 int br_mrp_set_port_state(struct net_bridge_port *p,
69                           enum br_mrp_port_state_type state);
70 int br_mrp_set_port_role(struct net_bridge_port *p,
71                          enum br_mrp_port_role_type role);
72 int br_mrp_set_ring_state(struct net_bridge *br,
73                           struct br_mrp_ring_state *state);
74 int br_mrp_set_ring_role(struct net_bridge *br, struct br_mrp_ring_role *role);
75 int br_mrp_start_test(struct net_bridge *br, struct br_mrp_start_test *test);
76 int br_mrp_set_in_state(struct net_bridge *br, struct br_mrp_in_state *state);
77 int br_mrp_set_in_role(struct net_bridge *br, struct br_mrp_in_role *role);
78 int br_mrp_start_in_test(struct net_bridge *br,
79                          struct br_mrp_start_in_test *test);
80
81 /* br_mrp_switchdev.c */
82 int br_mrp_switchdev_add(struct net_bridge *br, struct br_mrp *mrp);
83 int br_mrp_switchdev_del(struct net_bridge *br, struct br_mrp *mrp);
84 enum br_mrp_hw_support
85 br_mrp_switchdev_set_ring_role(struct net_bridge *br, struct br_mrp *mrp,
86                                enum br_mrp_ring_role_type role);
87 int br_mrp_switchdev_set_ring_state(struct net_bridge *br, struct br_mrp *mrp,
88                                     enum br_mrp_ring_state_type state);
89 enum br_mrp_hw_support
90 br_mrp_switchdev_send_ring_test(struct net_bridge *br, struct br_mrp *mrp,
91                                 u32 interval, u8 max_miss, u32 period,
92                                 bool monitor);
93 int br_mrp_port_switchdev_set_state(struct net_bridge_port *p, u32 state);
94 int br_mrp_port_switchdev_set_role(struct net_bridge_port *p,
95                                    enum br_mrp_port_role_type role);
96 enum br_mrp_hw_support
97 br_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);
100 int br_mrp_switchdev_set_in_state(struct net_bridge *br, struct br_mrp *mrp,
101                                   enum br_mrp_in_state_type state);
102 enum br_mrp_hw_support
103 br_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  */
107 int br_mrp_ring_port_open(struct net_device *dev, u8 loc);
108 int br_mrp_in_port_open(struct net_device *dev, u8 loc);
109
110 /* MRP protocol data units */
111 struct br_mrp_tlv_hdr {
112         __u8 type;
113         __u8 length;
114 };
115
116 struct br_mrp_common_hdr {
117         __be16 seq_id;
118         __u8 domain[MRP_DOMAIN_UUID_LENGTH];
119 };
120
121 struct 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
130 struct 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
139 struct br_mrp_oui_hdr {
140         __u8 oui[MRP_OUI_LENGTH];
141 };
142
143 struct br_mrp_sub_option1_hdr {
144         __u8 type;
145         __u8 data[MRP_MANUFACTURE_DATA_LENGTH];
146 };
147
148 #endif /* _BR_PRIVATE_MRP_H */