X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fcfm.h;h=13fdc60a64ca9360c770c1cedc2672a64b96dd4a;hb=HEAD;hp=651b1c4b27a840b3146995e5cebbc782f1deae6b;hpb=2a899f6e8ab6abf416fc4fdabacc9ae707d5b1c3;p=sliver-openvswitch.git diff --git a/lib/cfm.h b/lib/cfm.h index 651b1c4b2..13fdc60a6 100644 --- a/lib/cfm.h +++ b/lib/cfm.h @@ -1,5 +1,4 @@ -/* - * Copyright (c) 2010 Nicira Networks. +/* Copyright (c) 2010, 2011 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -24,88 +23,66 @@ struct flow; struct ofpbuf; - -/* Ethernet destination address of CCM packets. */ -static const uint8_t eth_addr_ccm[6] OVS_UNUSED - = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x30 }; - -#define ETH_TYPE_CFM 0x8902 - -/* A 'ccm' represents a Continuity Check Message from the 802.1ag - * specification. Continuity Check Messages are broadcast periodically so that - * hosts can determine who they have connectivity to. */ -#define CCM_LEN 74 -#define CCM_MAID_LEN 48 -struct ccm { - uint8_t mdlevel_version; /* MD Level and Version */ - uint8_t opcode; - uint8_t flags; - uint8_t tlv_offset; - ovs_be32 seq; - ovs_be16 mpid; - uint8_t maid[CCM_MAID_LEN]; - uint8_t zero[16]; /* Defined by ITU-T Y.1731 should be zero */ -} __attribute__((packed)); -BUILD_ASSERT_DECL(CCM_LEN == sizeof(struct ccm)); - -/* A 'cfm' represent a local Maintenance Point (MP) and its Connectivity Fault - * Management (CFM) state machine. Its configuration variables should be set - * by clients of the CFM library. */ -struct cfm { - /* Configuration Variables. */ - uint16_t mpid; /* The MPID of this CFM. */ - uint8_t maid[CCM_MAID_LEN]; /* The MAID of this CFM. */ - int interval; /* The requested transmission interval. */ - - /* Statistics. */ - struct hmap remote_mps; /* Expected remote MPs. */ - struct hmap x_remote_mps; /* Unexpected remote MPs. */ - struct hmap x_remote_maids; /* Unexpected remote MAIDs. */ - bool fault; /* Indicates connectivity vaults. */ +struct netdev; +struct flow_wildcards; + +#define CFM_RANDOM_VLAN UINT16_MAX + +#define CFM_FAULT_REASONS \ + CFM_FAULT_REASON(RECV, recv) \ + CFM_FAULT_REASON(RDI, rdi) \ + CFM_FAULT_REASON(MAID, maid) \ + CFM_FAULT_REASON(LOOPBACK, loopback) \ + CFM_FAULT_REASON(OVERFLOW, overflow) \ + CFM_FAULT_REASON(OVERRIDE, override) + +enum cfm_fault_bit_index { +#define CFM_FAULT_REASON(NAME, STR) CFM_FAULT_INDEX_##NAME, + CFM_FAULT_REASONS +#undef CFM_FAULT_REASON + CFM_FAULT_N_REASONS }; -/* Remote MPs represent foreign network entities that are configured to have - * the same MAID as this CFM instance. */ -struct remote_mp { - uint16_t mpid; /* The Maintenance Point ID of this 'remote_mp'. */ - struct hmap_node node; /* In 'cfm' 'remote_mps' or 'x_remote_mps'. */ - - long long recv_time; /* Time the most recent CCM was received. */ - bool fault; /* Indicates a connectivity fault. */ +enum cfm_fault_reason { +#define CFM_FAULT_REASON(NAME, STR) \ + CFM_FAULT_##NAME = 1 << CFM_FAULT_INDEX_##NAME, + CFM_FAULT_REASONS +#undef CFM_FAULT_REASON }; -/* Remote MAIDs keep track of incoming CCM messages which have a different MAID - * than this CFM instance. */ -struct remote_maid { - uint8_t maid[CCM_MAID_LEN]; /* The remote MAID. */ - struct hmap_node node; /* In 'cfm' 'x_remote_maids'. */ - - long long recv_time; /* Most recent receive time for this 'remote_maid'. */ +struct cfm_settings { + uint64_t mpid; /* The MPID of this CFM. */ + int interval; /* The requested transmission interval. */ + bool extended; /* Run in extended mode. */ + bool demand; /* Run in demand mode. */ + bool opup; /* Operational State. */ + uint16_t ccm_vlan; /* CCM Vlan tag. Zero if none. + CFM_RANDOM_VLAN if random. */ + uint8_t ccm_pcp; /* CCM Priority. Zero if none. */ + + bool check_tnl_key; /* Verify inbound packet key? */ }; -struct cfm *cfm_create(void); - -void cfm_destroy(struct cfm *); - +void cfm_init(void); +struct cfm *cfm_create(const struct netdev *); +struct cfm *cfm_ref(const struct cfm *); +void cfm_unref(struct cfm *); void cfm_run(struct cfm *); - bool cfm_should_send_ccm(struct cfm *); - -void cfm_compose_ccm(struct cfm *, struct ccm *); - +void cfm_compose_ccm(struct cfm *, struct ofpbuf *packet, uint8_t eth_src[6]); void cfm_wait(struct cfm *); - -bool cfm_configure(struct cfm *); - -void cfm_update_remote_mps(struct cfm *, const uint16_t *mpid, size_t n_mpids); - -const struct remote_mp *cfm_get_remote_mp(const struct cfm *, uint16_t mpid); - -bool cfm_generate_maid(const char *md_name, const char *ma_name, - uint8_t maid[CCM_MAID_LEN]); - -bool cfm_should_process_flow(const struct flow *); - +bool cfm_configure(struct cfm *, const struct cfm_settings *); +void cfm_set_netdev(struct cfm *, const struct netdev *); +bool cfm_should_process_flow(const struct cfm *cfm, const struct flow *, + struct flow_wildcards *); void cfm_process_heartbeat(struct cfm *, const struct ofpbuf *packet); - +bool cfm_check_status_change(struct cfm *); +int cfm_get_fault(const struct cfm *); +uint64_t cfm_get_flap_count(const struct cfm *); +int cfm_get_health(const struct cfm *); +int cfm_get_opup(const struct cfm *); +void cfm_get_remote_mpids(const struct cfm *, uint64_t **rmps, size_t *n_rmps); +const char *cfm_fault_reason_to_str(int fault); + +long long int cfm_wake_time(struct cfm*); #endif /* cfm.h */