X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fbfd%2Fbfd_main.h;h=9e2a12e1f9b26c271e2afd084c5784ec02cb35f1;hb=878c646aea9b9ccf68011ffd964694c43bbe5fdd;hp=3be3694c0f5ca674cbdc79575c91b45c2a9365ff;hpb=738844871220f853629504f61c248f0c9402dc77;p=vpp.git diff --git a/src/vnet/bfd/bfd_main.h b/src/vnet/bfd/bfd_main.h index 3be3694c0f5..9e2a12e1f9b 100644 --- a/src/vnet/bfd/bfd_main.h +++ b/src/vnet/bfd/bfd_main.h @@ -23,6 +23,7 @@ #include #include #include +#include #define foreach_bfd_mode(F) \ F (asynchronous) \ @@ -37,19 +38,19 @@ typedef enum typedef struct { - /* global configuration key ID */ + /** global configuration key ID */ u32 conf_key_id; - /* keeps track of how many sessions reference this key */ + /** keeps track of how many sessions reference this key */ u32 use_count; - /* + /** * key data directly usable for bfd purposes - already padded with zeroes * (so we don't need the actual length) */ u8 key[20]; - /* authentication type for this key */ + /** authentication type for this key */ bfd_auth_type_e auth_type; } bfd_auth_key_t; @@ -66,204 +67,246 @@ typedef enum #undef F } bfd_poll_state_e; +/** + * hop types + */ +#define foreach_bfd_hop(F) \ + F (SINGLE, "single") \ + F (MULTI, "multi") \ + +typedef enum +{ +#define F(sym, str) BFD_HOP_TYPE_##sym, + foreach_bfd_hop (F) +#undef F +} bfd_hop_type_e; + typedef struct bfd_session_s { - /* index in bfd_main.sessions pool */ + /** index in bfd_main.sessions pool */ u32 bs_idx; - /* session state */ + /** session state */ bfd_state_e local_state; - /* remote session state */ + /** remote session state */ bfd_state_e remote_state; - /* local diagnostics */ + /** BFD hop type */ + bfd_hop_type_e hop_type; + + /** local diagnostics */ bfd_diag_code_e local_diag; - /* remote diagnostics */ + /** remote diagnostics */ bfd_diag_code_e remote_diag; - /* local discriminator */ + /** local discriminator */ u32 local_discr; - /* remote discriminator */ + /** remote discriminator */ u32 remote_discr; - /* configured desired min tx interval (microseconds) */ + /** configured desired min tx interval (microseconds) */ u32 config_desired_min_tx_usec; - /* configured desired min tx interval (clocks) */ + /** configured desired min tx interval (clocks) */ u64 config_desired_min_tx_clocks; - /* effective desired min tx interval (clocks) */ + /** effective desired min tx interval (clocks) */ u64 effective_desired_min_tx_clocks; - /* configured required min rx interval (microseconds) */ + /** configured required min rx interval (microseconds) */ u32 config_required_min_rx_usec; - /* configured required min rx interval (clocks) */ + /** configured required min rx interval (clocks) */ u64 config_required_min_rx_clocks; - /* effective required min rx interval (clocks) */ + /** effective required min rx interval (clocks) */ u64 effective_required_min_rx_clocks; - /* remote min rx interval (microseconds) */ + /** remote min rx interval (microseconds) */ u64 remote_min_rx_usec; - /* remote min rx interval (clocks) */ + /** remote min rx interval (clocks) */ u64 remote_min_rx_clocks; - /* remote min echo rx interval (microseconds) */ + /** remote min echo rx interval (microseconds) */ u64 remote_min_echo_rx_usec; - /* remote min echo rx interval (clocks) */ + /** remote min echo rx interval (clocks) */ u64 remote_min_echo_rx_clocks; - /* remote desired min tx interval (clocks) */ + /** remote desired min tx interval (clocks) */ u64 remote_desired_min_tx_clocks; - /* configured detect multiplier */ + /** configured detect multiplier */ u8 local_detect_mult; - /* 1 if remote system sets demand mode, 0 otherwise */ + /** 1 if remote system sets demand mode, 0 otherwise */ u8 remote_demand; - /* remote detect multiplier */ + /** remote detect multiplier */ u8 remote_detect_mult; - /* 1 is echo function is active, 0 otherwise */ + /** 1 is echo function is active, 0 otherwise */ u8 echo; - /* set to value of timer in timing wheel, 0 if never set */ + /** set to value of timer in timing wheel, 0 if never set */ u64 wheel_time_clocks; - /* transmit interval */ + /** transmit interval */ u64 transmit_interval_clocks; - /* next time at which to transmit a packet */ + /** next time at which to transmit a packet */ u64 tx_timeout_clocks; - /* timestamp of last packet transmitted */ + /** timestamp of last packet transmitted */ u64 last_tx_clocks; - /* timestamp of last packet received */ + /** timestamp of last packet received */ u64 last_rx_clocks; - /* transmit interval for echo packets */ + /** transmit interval for echo packets */ u64 echo_transmit_interval_clocks; - /* next time at which to transmit echo packet */ + /** next time at which to transmit echo packet */ u64 echo_tx_timeout_clocks; - /* timestamp of last echo packet transmitted */ + /** timestamp of last echo packet transmitted */ u64 echo_last_tx_clocks; - /* timestamp of last echo packet received */ + /** timestamp of last echo packet received */ u64 echo_last_rx_clocks; - /* secret used for calculating/checking checksum of echo packets */ + /** secret used for calculating/checking checksum of echo packets */ u32 echo_secret; - /* detection time */ + /** detection time */ u64 detection_time_clocks; - /* state info regarding poll sequence */ + /** state info regarding poll sequence */ bfd_poll_state_e poll_state; - /* + /** * helper for delayed poll sequence - marks either start of running poll * sequence or timeout, after which we can start the next poll sequnce */ u64 poll_state_start_or_timeout_clocks; - /* authentication information */ + /** authentication information */ struct { - /* current key in use */ + /** current key in use */ bfd_auth_key_t *curr_key; - /* + /** * set to next key to use if delayed switch is enabled - in that case * the key is switched when first incoming packet is signed with next_key */ bfd_auth_key_t *next_key; - /* sequence number incremented occasionally or always (if meticulous) */ + /** sequence number incremented occasionally or always (if meticulous) */ u32 local_seq_number; - /* remote sequence number */ + /** remote sequence number */ u32 remote_seq_number; - /* set to 1 if remote sequence number is known */ + /** set to 1 if remote sequence number is known */ u8 remote_seq_number_known; - /* current key ID sent out in bfd packet */ + /** current key ID sent out in bfd packet */ u8 curr_bfd_key_id; - /* key ID to use when switched to next_key */ + /** key ID to use when switched to next_key */ u8 next_bfd_key_id; - /* + /** * set to 1 if delayed action is pending, which might be activation * of authentication, change of key or deactivation */ u8 is_delayed; } auth; - /* transport type for this session */ + /** transport type for this session */ bfd_transport_e transport; - /* union of transport-specific data */ + /** union of transport-specific data */ union { bfd_udp_session_t udp; }; } bfd_session_t; +/** + * listener events + */ +#define foreach_bfd_listen_event(F) \ + F (CREATE, "sesion-created") \ + F (UPDATE, "session-updated") \ + F (DELETE, "session-deleted") + +typedef enum +{ +#define F(sym, str) BFD_LISTEN_EVENT_##sym, + foreach_bfd_listen_event (F) +#undef F +} bfd_listen_event_e; + +/** + * session nitification call back function type + */ +typedef void (*bfd_notify_fn_t) (bfd_listen_event_e, const bfd_session_t *); + typedef struct { - /* pool of bfd sessions context data */ + /** pool of bfd sessions context data */ bfd_session_t *sessions; - /* timing wheel for scheduling timeouts */ + /** timing wheel for scheduling timeouts */ timing_wheel_t wheel; - /* timing wheel inaccuracy, in clocks */ + /** timing wheel inaccuracy, in clocks */ u64 wheel_inaccuracy; - /* hashmap - bfd session by discriminator */ + /** hashmap - bfd session by discriminator */ u32 *session_by_disc; - /* background process node index */ + /** background process node index */ u32 bfd_process_node_index; - /* convenience variables */ + /** convenience variables */ vlib_main_t *vlib_main; vnet_main_t *vnet_main; - /* cpu clocks per second */ + /** cpu clocks per second */ f64 cpu_cps; - /* default desired min tx in clocks */ + /** default desired min tx in clocks */ u64 default_desired_min_tx_clocks; - /* minimum required min rx while echo function is active - clocks */ + /** minimum required min rx while echo function is active - clocks */ u64 min_required_min_rx_while_echo_clocks; - /* for generating random numbers */ + /** for generating random numbers */ u32 random_seed; - /* pool of authentication keys */ + /** pool of authentication keys */ bfd_auth_key_t *auth_keys; - /* hashmap - index in pool auth_keys by conf_key_id */ + /** hashmap - index in pool auth_keys by conf_key_id */ u32 *auth_key_by_conf_key_id; + /** vector of callback notification functions */ + bfd_notify_fn_t *listeners; + + /** log class */ + vlib_log_class_t log_class; } bfd_main_t; extern bfd_main_t bfd_main; -/* Packet counters */ +/** Packet counters */ #define foreach_bfd_error(F) \ F (NONE, "good bfd packets (processed)") \ F (BAD, "invalid bfd packets") \ @@ -277,7 +320,7 @@ typedef enum BFD_N_ERROR, } bfd_error_t; -/* bfd packet trace capture */ +/** bfd packet trace capture */ typedef struct { u32 len; @@ -291,14 +334,14 @@ enum BFD_EVENT_CONFIG_CHANGED, } bfd_process_event_e; -/* echo packet structure */ /* *INDENT-OFF* */ +/** echo packet structure */ typedef CLIB_PACKED (struct { - /* local discriminator */ + /** local discriminator */ u32 discriminator; - /* expire time of this packet - clocks */ + /** expire time of this packet - clocks */ u64 expire_time_clocks; - /* checksum - based on discriminator, local secret and expire time */ + /** checksum - based on discriminator, local secret and expire time */ u64 checksum; }) bfd_echo_pkt_t; /* *INDENT-ON* */ @@ -316,8 +359,10 @@ int bfd_verify_pkt_auth (const bfd_pkt_t * pkt, u16 pkt_size, bfd_session_t * bs); void bfd_event (bfd_main_t * bm, bfd_session_t * bs); void bfd_init_final_control_frame (vlib_main_t * vm, vlib_buffer_t * b, - bfd_main_t * bm, bfd_session_t * bs); + bfd_main_t * bm, bfd_session_t * bs, + int is_local); u8 *format_bfd_session (u8 * s, va_list * args); +u8 *format_bfd_session_brief (u8 * s, va_list * args); u8 *format_bfd_auth_key (u8 * s, va_list * args); void bfd_session_set_flags (bfd_session_t * bs, u8 admin_up_down); unsigned bfd_auth_type_supported (bfd_auth_type_e auth_type); @@ -335,15 +380,20 @@ const char *bfd_poll_state_string (bfd_poll_state_e state); #define USEC_PER_MS 1000LL #define USEC_PER_SECOND (1000 * USEC_PER_MS) -/* default, slow transmission interval for BFD packets, per spec at least 1s */ +/** default, slow transmission interval for BFD packets, per spec at least 1s */ #define BFD_DEFAULT_DESIRED_MIN_TX_USEC USEC_PER_SECOND -/* +/** * minimum required min rx set locally when echo function is used, per spec * should be set to at least 1s */ #define BFD_REQUIRED_MIN_RX_USEC_WHILE_ECHO USEC_PER_SECOND +/** + * Register a callback function to receive session notifications. + */ +void bfd_register_listener (bfd_notify_fn_t fn); + #endif /* __included_bfd_main_h__ */ /*