LXR linux/net/bridge/br_private

   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
   9struct 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
  15int 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
  20int br_cfm_mep_delete(struct net_bridge *br,
  21                      const u32 instance,
  22                      struct netlink_ext_ack *extack);
  23
  24struct 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
  30int 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
  35struct br_cfm_maid {
  36        u8 data[CFM_MAID_LENGTH];
  37};
  38
  39struct 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
  50int 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
  55int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance,
  56                           u32 peer_mep_id,
  57                           struct netlink_ext_ack *extack);
  58int 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 */
  66int 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 */
  70struct 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
  88int 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
  92struct 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
  99struct 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
 117struct 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
 137struct 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