/* * 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, member_if_t * mif) { mif->actor.state &= ~LACP_STATE_SYNCHRONIZATION; mif->ready = 0; mif->ready_n = 0; } static void lacp_attach_mux_to_aggregator (vlib_main_t * vm, member_if_t * mif) { mif->actor.state |= LACP_STATE_SYNCHRONIZATION; } int lacp_mux_action_detached (void *p1, void *p2) { vlib_main_t *vm = p1; member_if_t *mif = p2; lacp_detach_mux_from_aggregator (vm, mif); mif->actor.state &= ~LACP_STATE_COLLECTING; bond_disable_collecting_distributing (vm, mif); mif->actor.state &= ~LACP_STATE_DISTRIBUTING; mif->ntt = 1; lacp_start_periodic_timer (vm, mif, 0); if (mif->selected == LACP_PORT_SELECTED) lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_SELECTED, &mif->mux_state); if (mif->selected == LACP_PORT_STANDBY) lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_STANDBY, &mif->mux_state); return 0; } int lacp_mux_action_attached (void *p1, void *p2) { vlib_main_t *vm = p1; member_if_t *mif = p2; lacp_attach_mux_to_aggregator (vm, mif); mif->actor.state &= ~LACP_STATE_COLLECTING; bond_disable_collecting_distributing (vm, mif); mif->actor.state &= ~LACP_STATE_DISTRIBUTING; mif->ntt = 1; lacp_start_periodic_timer (vm, mif, 0); if ((mif->selected == LACP_PORT_UNSELECTED) || (mif->selected == LACP_PORT_STANDBY)) lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_UNSELECTED, &mif->mux_state); if ((mif->selected == LACP_PORT_SELECTED) && (mif->partner.state & LACP_STATE_SYNCHRONIZATION)) lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_SYNC, &mif->mux_state); return 0; } int lacp_mux_action_waiting (void *p1, void *p2) { vlib_main_t *vm = p1; member_if_t *mif = p2; if (!lacp_timer_is_running (mif->wait_while_timer)) lacp_start_wait_while_timer (vm, mif, LACP_AGGREGATE_WAIT_TIME); if ((mif->selected == LACP_PORT_SELECTED) && mif->ready) lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_READY, &mif->mux_state); if (mif->selected == LACP_PORT_UNSELECTED) lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_UNSELECTED, &mif->mux_state); return 0; } int lacp_mux_action_collecting_distributing (void *p1, void *p2) { vlib_main_t *vm = p1; member_if_t *mif = p2; mif->actor.state |= LACP_STATE_SYNCHRONIZATION | LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING; bond_enable_collecting_distributing (vm, mif); mif->ntt = 1; lacp_start_periodic_timer (vm, mif, 0); if ((mif->selected == LACP_PORT_UNSELECTED) || (mif->selected == LACP_PORT_STANDBY) || !(mif->partner.state & LACP_STATE_SYNCHRONIZATION)) lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_UNSELECTED, &mif->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_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 (member_if_t * mif, int event, int state, lacp_fsm_state_t * transition) { vlib_worker_thread_t *w = vlib_worker_threads + os_get_thread_index (); /* *INDENT-OFF* */ ELOG_TYPE_DECLARE (e) = { .format = "%s", .format_args = "T4", }; /* *INDENT-ON* */ struct { u32 event; } *ed = 0; ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); ed->event = elog_string (&vlib_global_main.elog_main, "%U-MUX: %U, %U->%U%c", format_vnet_sw_if_index_name, vnet_get_main (), mif->sw_if_index, format_mux_event, event, format_mux_sm_state, state, format_mux_sm_state, transition->next_state, 0); } void lacp_init_mux_machine (vlib_main_t * vm, member_if_t * mif) { lacp_machine_dispatch (&lacp_mux_machine, vm, mif, LACP_MUX_EVENT_BEGIN, &mif->mux_state); } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */