/* * 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 <vlib/vlib.h> #include <vnet/bonding/node.h> #include <lacp/node.h> /* * LACP State = DETACHED */ static lacp_fsm_state_t lacp_mux_state_detached[] = { {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 0 BEGIN {LACP_ACTION_WAITING, LACP_MUX_STATE_WAITING}, // event 1 SELECTED {LACP_ACTION_WAITING, LACP_MUX_STATE_WAITING}, // event 2 STANDBY {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 3 UNSELECTED {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 4 READY {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 5 SYNC }; /* * LACP State = WAITING */ static lacp_fsm_state_t lacp_mux_state_waiting[] = { {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 0 BEGIN {LACP_ACTION_WAITING, LACP_MUX_STATE_WAITING}, // event 1 SELECTED {LACP_ACTION_WAITING, LACP_MUX_STATE_WAITING}, // event 2 STANDBY {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 3 UNSELECTED {LACP_ACTION_ATTACHED, LACP_MUX_STATE_ATTACHED}, // event 4 READY {LACP_ACTION_WAITING, LACP_MUX_STATE_WAITING}, // event 5 SYNC }; /* * LACP State = ATTACHED */ static lacp_fsm_state_t lacp_mux_state_attached[] = { {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 0 BEGIN {LACP_ACTION_ATTACHED, LACP_MUX_STATE_ATTACHED}, // event 1 SELECTED {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 2 STANDBY {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 3 UNSELECTED {LACP_ACTION_ATTACHED, LACP_MUX_STATE_ATTACHED}, // event 4 READY {LACP_ACTION_COLLECTING_DISTRIBUTING, LACP_MUX_STATE_COLLECTING_DISTRIBUTING}, // event 5_SYNC }; /* * LACP State = COLLECTING_DISTRIBUTING */ static lacp_fsm_state_t lacp_mux_state_collecting_distributing[] = { {LACP_ACTION_DETACHED, LACP_MUX_STATE_DETACHED}, // event 0 BEGIN {LACP_ACTION_COLLECTING_DISTRIBUTING, LACP_MUX_STATE_COLLECTING_DISTRIBUTING}, // event 1 SELECTED {LACP_ACTION_COLLECTING_DISTRIBUTING, LACP_MUX_STATE_COLLECTING_DISTRIBUTING}, // event 2 STANDBY {LACP_ACTION_ATTACHED, LACP_MUX_STATE_ATTACHED}, // event 3 UNSELECTED {LACP_ACTION_COLLECTING_DISTRIBUTING, LACP_MUX_STATE_COLLECTING_DISTRIBUTING}, // event 4 READY {LACP_ACTION_COLLECTING_DISTRIBUTING, LACP_MUX_STATE_COLLECTING_DISTRIBUTING}, // event 5 SYNC }; static lacp_fsm_machine_t lacp_mux_fsm_table[] = { {lacp_mux_state_detached}, {lacp_mux_state_waiting}, {lacp_mux_state_attached}, {lacp_mux_state_collecting_distributing}, }; lacp_machine_t lacp_mux_machine = { lacp_mux_fsm_table, lacp_mux_debug_func, }; static void lacp_detach_mux_from_aggregator (vlib_main_t * vm, slave_if_t * sif) { sif->actor.state &= ~LACP_STATE_SYNCHRONIZATION; sif->ready = 0; sif->ready_n = 0; } static void lacp_attach_mux_to_aggregator (vlib_main_t * vm, slave_if_t * sif) { sif->actor.state |= LACP_STATE_SYNCHRONIZATION; } int lacp_mux_action_detached (void *p1, void *p2) { vlib_main_t *vm = (vlib_main_t *) p1; slave_if_t *sif = (slave_if_t *) p2; lacp_main_t *lm = &lacp_main; lacp_detach_mux_from_aggregator (vm, sif); sif->actor.state &= ~LACP_STATE_COLLECTING; bond_disable_collecting_distributing (vm, sif); sif->actor.state &= ~LACP_STATE_DISTRIBUTING; sif->ntt = 1; lacp_start_periodic_timer (lm->vlib_main, sif, 0); if (sif->selected == LACP_PORT_SELECTED) lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_SELECTED, &sif->mux_state); if (sif->selected == LACP_PORT_STANDBY) lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_STANDBY, &sif->mux_state); return 0; } int lacp_mux_action_attached (void *p1, void *p2) { vlib_main_t *vm = (vlib_main_t *) p1; slave_if_t *sif = (slave_if_t *) p2; lacp_main_t *lm = &lacp_main; lacp_attach_mux_to_aggregator (vm, sif); sif->actor.state &= ~LACP_STATE_COLLECTING; bond_disable_collecting_distributing (vm, sif); sif->actor.state &= ~LACP_STATE_DISTRIBUTING; sif->ntt = 1; lacp_start_periodic_timer (lm->vlib_main, sif, 0); if ((sif->selected == LACP_PORT_UNSELECTED) || (sif->selected == LACP_PORT_STANDBY)) lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_UNSELECTED, &sif->mux_state); if ((sif->selected == LACP_PORT_SELECTED) && (sif->partner.state & LACP_STATE_SYNCHRONIZATION)) lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_SYNC, &sif->mux_state); return 0; } int lacp_mux_action_waiting (void *p1, void *p2) { vlib_main_t *vm = (vlib_main_t *) p1; slave_if_t *sif = (slave_if_t *) p2; lacp_main_t *lm = &lacp_main; if (!lacp_timer_is_running (sif->wait_while_timer)) lacp_start_wait_while_timer (lm->vlib_main, sif, LACP_AGGREGATE_WAIT_TIME); if ((sif->selected == LACP_PORT_SELECTED) && sif->ready) lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_READY, &sif->mux_state); if (sif->selected == LACP_PORT_UNSELECTED) lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_UNSELECTED, &sif->mux_state); return 0; } int lacp_mux_action_collecting_distributing (void *p1, void *p2) { vlib_main_t *vm = (vlib_main_t *) p1; slave_if_t *sif = (slave_if_t *) p2; lacp_main_t *lm = &lacp_main; sif->actor.state |= LACP_STATE_SYNCHRONIZATION | LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING; bond_enable_collecting_distributing (vm, sif); sif->ntt = 1; lacp_start_periodic_timer (lm->vlib_main, sif, 0); if ((sif->selected == LACP_PORT_UNSELECTED) || (sif->selected == LACP_PORT_STANDBY) || !(sif->partner.state & LACP_STATE_SYNCHRONIZATION)) lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_UNSELECTED, &sif->mux_state); return 0; } static u8 * format_mux_event (u8 * s, va_list * args) { static lacp_event_struct lacp_mux_event_array[] = { #define _(b, s, n) {.bit = b, .str = #s, }, foreach_lacp_mux_event #undef _ {.str = NULL} }; int e = va_arg (*args, int); lacp_event_struct *event_entry = (lacp_event_struct *) & lacp_mux_event_array; if (e >= (sizeof (lacp_mux_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_mux_debug_func (slave_if_t * sif, int event, int state, lacp_fsm_state_t * transition) { clib_warning ("%U-MUX: event %U, old state %U, new state %U", format_vnet_sw_if_index_name, vnet_get_main (), sif->sw_if_index, format_mux_event, event, format_mux_sm_state, state, format_mux_sm_state, transition->next_state); } void lacp_init_mux_machine (vlib_main_t * vm, slave_if_t * sif) { lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_BEGIN, &sif->mux_state); } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */