/* * 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_schedule_periodic_timer (lm->vlib_main, sif); 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: */