1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2
3 #ifndef _BR_PRIVATE_CFM_H_
4 #define _BR_PRIVATE_CFM_H_
5
6 #include "br_private.h"
7 #include <uapi/linux/cfm_bridge.h>
8
9 struct br_cfm_mep_create {
10 enum br_cfm_domain domain; /* Domain for this MEP */
11 enum br_cfm_mep_direction direction; /* Up or Down MEP direction */
12 u32 ifindex; /* Residence port */
13 };
14
15 int br_cfm_mep_create(struct net_bridge *br,
16 const u32 instance,
17 struct br_cfm_mep_create *const create,
18 struct netlink_ext_ack *extack);
19
20 int br_cfm_mep_delete(struct net_bridge *br,
21 const u32 instance,
22 struct netlink_ext_ack *extack);
23
24 struct br_cfm_mep_config {
25 u32 mdlevel;
26 u32 mepid; /* MEPID for this MEP */
27 struct mac_addr unicast_mac; /* The MEP unicast MAC */
28 };
29
30 int br_cfm_mep_config_set(struct net_bridge *br,
31 const u32 instance,
32 const struct br_cfm_mep_config *const config,
33 struct netlink_ext_ack *extack);
34
35 struct br_cfm_maid {
36 u8 data[CFM_MAID_LENGTH];
37 };
38
39 struct br_cfm_cc_config {
40 /* Expected received CCM PDU MAID. */
41 struct br_cfm_maid exp_maid;
42
43 /* Expected received CCM PDU interval. */
44 /* Transmitting CCM PDU interval when CCM tx is enabled. */
45 enum br_cfm_ccm_interval exp_interval;
46
47 bool enable; /* Enable/disable CCM PDU handling */
48 };
49
50 int br_cfm_cc_config_set(struct net_bridge *br,
51 const u32 instance,
52 const struct br_cfm_cc_config *const config,
53 struct netlink_ext_ack *extack);
54
55 int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance,
56 u32 peer_mep_id,
57 struct netlink_ext_ack *extack);
58 int br_cfm_cc_peer_mep_remove(struct net_bridge *br, const u32 instance,
59 u32 peer_mep_id,
60 struct netlink_ext_ack *extack);
61
62 /* Transmitted CCM Remote Defect Indication status set.
63 * This RDI is inserted in transmitted CCM PDUs if CCM transmission is enabled.
64 * See br_cfm_cc_ccm_tx() with interval != BR_CFM_CCM_INTERVAL_NONE
65 */
66 int br_cfm_cc_rdi_set(struct net_bridge *br, const u32 instance,
67 const bool rdi, struct netlink_ext_ack *extack);
68
69 /* OAM PDU Tx information */
70 struct br_cfm_cc_ccm_tx_info {
71 struct mac_addr dmac;
72 /* The CCM will be transmitted for this period in seconds.
73 * Call br_cfm_cc_ccm_tx before timeout to keep transmission alive.
74 * When period is zero any ongoing transmission will be stopped.
75 */
76 u32 period;
77
78 bool seq_no_update; /* Update Tx CCM sequence number */
79 bool if_tlv; /* Insert Interface Status TLV */
80 u8 if_tlv_value; /* Interface Status TLV value */
81 bool port_tlv; /* Insert Port Status TLV */
82 u8 port_tlv_value; /* Port Status TLV value */
83 /* Sender ID TLV ??
84 * Organization-Specific TLV ??
85 */
86 };
87
88 int br_cfm_cc_ccm_tx(struct net_bridge *br, const u32 instance,
89 const struct br_cfm_cc_ccm_tx_info *const tx_info,
90 struct netlink_ext_ack *extack);
91
92 struct br_cfm_mep_status {
93 /* Indications that an OAM PDU has been seen. */
94 bool opcode_unexp_seen; /* RX of OAM PDU with unexpected opcode */
95 bool version_unexp_seen; /* RX of OAM PDU with unexpected version */
96 bool rx_level_low_seen; /* Rx of OAM PDU with level low */
97 };
98
99 struct br_cfm_cc_peer_status {
100 /* This CCM related status is based on the latest received CCM PDU. */
101 u8 port_tlv_value; /* Port Status TLV value */
102 u8 if_tlv_value; /* Interface Status TLV value */
103
104 /* CCM has not been received for 3.25 intervals */
105 u8 ccm_defect:1;
106
107 /* (RDI == 1) for last received CCM PDU */
108 u8 rdi:1;
109
110 /* Indications that a CCM PDU has been seen. */
111 u8 seen:1; /* CCM PDU received */
112 u8 tlv_seen:1; /* CCM PDU with TLV received */
113 /* CCM PDU with unexpected sequence number received */
114 u8 seq_unexp_seen:1;
115 };
116
117 struct br_cfm_mep {
118 /* list header of MEP instances */
119 struct hlist_node head;
120 u32 instance;
121 struct br_cfm_mep_create create;
122 struct br_cfm_mep_config config;
123 struct br_cfm_cc_config cc_config;
124 struct br_cfm_cc_ccm_tx_info cc_ccm_tx_info;
125 /* List of multiple peer MEPs */
126 struct hlist_head peer_mep_list;
127 struct net_bridge_port __rcu *b_port;
128 unsigned long ccm_tx_end;
129 struct delayed_work ccm_tx_dwork;
130 u32 ccm_tx_snumber;
131 u32 ccm_rx_snumber;
132 struct br_cfm_mep_status status;
133 bool rdi;
134 struct rcu_head rcu;
135 };
136
137 struct br_cfm_peer_mep {
138 struct hlist_node head;
139 struct br_cfm_mep *mep;
140 struct delayed_work ccm_rx_dwork;
141 u32 mepid;
142 struct br_cfm_cc_peer_status cc_status;
143 u32 ccm_rx_count_miss;
144 struct rcu_head rcu;
145 };
146
147 #endif /* _BR_PRIVATE_CFM_H_ */
148
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