diff options
Diffstat (limited to 'src/plugins/lacp/mux_machine.c')
| -rw-r--r-- | src/plugins/lacp/mux_machine.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/plugins/lacp/mux_machine.c b/src/plugins/lacp/mux_machine.c new file mode 100644 index 00000000000..f33c2642f20 --- /dev/null +++ b/src/plugins/lacp/mux_machine.c @@ -0,0 +1,236 @@ +/* + * 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_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_machine_dispatch (&lacp_tx_machine, vm, sif, LACP_TX_EVENT_NTT, + &sif->tx_state); + + 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_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_machine_dispatch (&lacp_tx_machine, vm, sif, LACP_TX_EVENT_NTT, + &sif->tx_state); + + 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; + + sif->actor.state |= LACP_STATE_SYNCHRONIZATION | LACP_STATE_COLLECTING | + LACP_STATE_DISTRIBUTING; + bond_enable_collecting_distributing (vm, sif); + sif->ntt = 1; + lacp_machine_dispatch (&lacp_tx_machine, vm, sif, LACP_TX_EVENT_NTT, + &sif->tx_state); + 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: + */ |