diff options
Diffstat (limited to 'src/plugins/lacp/ptx_machine.c')
| -rw-r--r-- | src/plugins/lacp/ptx_machine.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/plugins/lacp/ptx_machine.c b/src/plugins/lacp/ptx_machine.c new file mode 100644 index 00000000000..ac83444b08a --- /dev/null +++ b/src/plugins/lacp/ptx_machine.c @@ -0,0 +1,202 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE + +#include <vnet/bonding/node.h> +#include <lacp/node.h> + +/* + * LACP State = NO_PERIODIC + */ +static lacp_fsm_state_t lacp_ptx_state_no_periodic[] = { + {LACP_ACTION_NO_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 0 BEGIN + {LACP_NOACTION, LACP_PTX_STATE_NO_PERIODIC}, // event 1 LONG_TIMEOUT + {LACP_NOACTION, LACP_PTX_STATE_NO_PERIODIC}, // event 2 TIMER_EXPIRED + {LACP_NOACTION, LACP_PTX_STATE_NO_PERIODIC}, // event 3 SHORT_TIMEOUT +}; + +/* + * LACP State = FAST_PERIODIC + */ +static lacp_fsm_state_t lacp_ptx_state_fast_periodic[] = { + {LACP_ACTION_FAST_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 0 BEGIN + {LACP_ACTION_SLOW_PERIODIC, LACP_PTX_STATE_SLOW_PERIODIC}, // event 1 LONG_TIMEOUT + {LACP_ACTION_TIMER_EXPIRED, LACP_PTX_STATE_PERIODIC_TX}, // event 2 TIMER_EXPIRED + {LACP_ACTION_FAST_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 3 SHORT_TIMEOUT +}; + +/* + * LACP State = SLOW_PERIODIC + */ +static lacp_fsm_state_t lacp_ptx_state_slow_periodic[] = { + {LACP_ACTION_NO_PERIODIC, LACP_PTX_STATE_NO_PERIODIC}, // event 0 BEGIN + {LACP_ACTION_SLOW_PERIODIC, LACP_PTX_STATE_SLOW_PERIODIC}, // event 1 LONG_TIMEOUT + {LACP_ACTION_TIMER_EXPIRED, LACP_PTX_STATE_PERIODIC_TX}, // event 2 TIMER_EXPIRED + {LACP_ACTION_FAST_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 3 SHORT_TIMEOUT +}; + +/* + * LACP State = PERIODIC_TX + */ +static lacp_fsm_state_t lacp_ptx_state_periodic_tx[] = { + {LACP_ACTION_NO_PERIODIC, LACP_PTX_STATE_NO_PERIODIC}, // event 0 BEGIN + {LACP_NOACTION, LACP_PTX_STATE_PERIODIC_TX}, // event 1 LONG_TIMEOUT + {LACP_ACTION_TIMER_EXPIRED, LACP_PTX_STATE_PERIODIC_TX}, // event 2 TIMER_EXPIRED + {LACP_NOACTION, LACP_PTX_STATE_PERIODIC_TX}, // event 3 SHORT_TIMEOUT +}; + + +static lacp_fsm_machine_t lacp_ptx_fsm_table[] = { + {lacp_ptx_state_no_periodic}, + {lacp_ptx_state_fast_periodic}, + {lacp_ptx_state_slow_periodic}, + {lacp_ptx_state_periodic_tx}, +}; + +lacp_machine_t lacp_ptx_machine = { + lacp_ptx_fsm_table, + lacp_ptx_debug_func, +}; + +int +lacp_ptx_action_no_periodic (void *p1, void *p2) +{ + vlib_main_t *vm = (vlib_main_t *) p1; + slave_if_t *sif = (slave_if_t *) p2; + + lacp_stop_timer (&sif->periodic_timer); + + lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, + LACP_PTX_EVENT_BEGIN, &sif->ptx_state); + + return 0; +} + +int +lacp_ptx_action_slow_periodic (void *p1, void *p2) +{ + vlib_main_t *vm = (vlib_main_t *) p1; + slave_if_t *sif = (slave_if_t *) p2; + u8 timer_expired; + lacp_main_t *lm = &lacp_main; + + if (lacp_timer_is_running (sif->periodic_timer) && + lacp_timer_is_expired (lm->vlib_main, sif->periodic_timer)) + timer_expired = 1; + else + timer_expired = 0; + + lacp_start_periodic_timer (lm->vlib_main, sif, LACP_SLOW_PERIODIC_TIMER); + + if (timer_expired || (sif->partner.state & LACP_STATE_LACP_TIMEOUT)) + lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, + LACP_PTX_EVENT_TIMER_EXPIRED, &sif->ptx_state); + + return 0; +} + +int +lacp_ptx_action_fast_periodic (void *p1, void *p2) +{ + vlib_main_t *vm = (vlib_main_t *) p1; + slave_if_t *sif = (slave_if_t *) p2; + u8 timer_expired; + lacp_main_t *lm = &lacp_main; + + if (lacp_timer_is_running (sif->periodic_timer) && + lacp_timer_is_expired (lm->vlib_main, sif->periodic_timer)) + timer_expired = 1; + else + timer_expired = 0; + + lacp_start_periodic_timer (lm->vlib_main, sif, LACP_FAST_PERIODIC_TIMER); + + if (timer_expired) + lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, + LACP_PTX_EVENT_TIMER_EXPIRED, &sif->ptx_state); + + if (!(sif->partner.state & LACP_STATE_LACP_TIMEOUT)) + lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, + LACP_PTX_EVENT_LONG_TIMEOUT, &sif->ptx_state); + + return 0; +} + +int +lacp_ptx_action_timer_expired (void *p1, void *p2) +{ + vlib_main_t *vm = (vlib_main_t *) p1; + slave_if_t *sif = (slave_if_t *) p2; + + sif->ntt = 1; + lacp_machine_dispatch (&lacp_tx_machine, vm, sif, LACP_TX_EVENT_NTT, + &sif->tx_state); + if (sif->partner.state & LACP_STATE_LACP_TIMEOUT) + lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, + LACP_PTX_EVENT_SHORT_TIMEOUT, &sif->ptx_state); + else + lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, + LACP_PTX_EVENT_LONG_TIMEOUT, &sif->ptx_state); + + return 0; +} + +static u8 * +format_ptx_event (u8 * s, va_list * args) +{ + static lacp_event_struct lacp_ptx_event_array[] = { +#define _(b, s, n) {.bit = b, .str = #s, }, + foreach_lacp_ptx_event +#undef _ + {.str = NULL} + }; + int e = va_arg (*args, int); + lacp_event_struct *event_entry = + (lacp_event_struct *) & lacp_ptx_event_array; + + if (e >= (sizeof (lacp_ptx_event_array) / sizeof (*event_entry))) + s = format (s, "Bad event %d", e); + else + s = format (s, "%s", event_entry[e].str); + + return s; +} + +void +lacp_ptx_debug_func (slave_if_t * sif, int event, int state, + lacp_fsm_state_t * transition) +{ + clib_warning ("%U-PTX: event %U, old state %U, new state %U", + format_vnet_sw_if_index_name, vnet_get_main (), + sif->sw_if_index, format_ptx_event, + event, format_ptx_sm_state, state, format_ptx_sm_state, + transition->next_state); +} + +void +lacp_init_ptx_machine (vlib_main_t * vm, slave_if_t * sif) +{ + lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, LACP_PTX_EVENT_BEGIN, + &sif->ptx_state); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |