2 * Copyright (c) 2017 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
18 #include <vnet/bonding/node.h>
19 #include <lacp/node.h>
22 * LACP State = INITIALIZE
24 static lacp_fsm_state_t lacp_rx_state_initialize[] = {
25 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_PORT_DISABLED}, // event 0 BEGIN
26 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_PORT_DISABLED}, // event 1 PORT_DISABLED
27 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_PORT_DISABLED}, // event 2 PORT_MOVED
28 {LACP_NOACTION, LACP_RX_STATE_INITIALIZE}, // event 3 LACP_ENABLED
29 {LACP_NOACTION, LACP_RX_STATE_INITIALIZE}, // event 4 LACP_DISABLED
30 {LACP_NOACTION, LACP_RX_STATE_INITIALIZE}, // event 5 PDU_RECEIVED
31 {LACP_NOACTION, LACP_RX_STATE_INITIALIZE}, // event 6 TIMER_EXPIRED
35 * LACP State = PORT_DISABLED
37 static lacp_fsm_state_t lacp_rx_state_port_disabled[] = {
38 {LACP_ACTION_PORT_DISABLED, LACP_RX_STATE_PORT_DISABLED}, // event 0 BEGIN
39 {LACP_ACTION_PORT_DISABLED, LACP_RX_STATE_PORT_DISABLED}, // event 1 PORT_DISABLED
40 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_INITIALIZE}, // event 2 PORT_MOVED
41 {LACP_ACTION_EXPIRED, LACP_RX_STATE_EXPIRED}, // event 3 LACP_ENABLED
42 {LACP_ACTION_LACP_DISABLED, LACP_RX_STATE_LACP_DISABLED}, // event 4 LACP_DISABLED
43 {LACP_NOACTION, LACP_RX_STATE_PORT_DISABLED}, // event 5 PDU_RECEIVED
44 {LACP_NOACTION, LACP_RX_STATE_PORT_DISABLED}, // event 6 TIMER_EXPIRED
48 * LACP State = EXPIRED
50 static lacp_fsm_state_t lacp_rx_state_expired[] = {
51 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_INITIALIZE}, // event 0 BEGIN
52 {LACP_NOACTION, LACP_RX_STATE_EXPIRED}, // event 1 PORT_DISABLED
53 {LACP_NOACTION, LACP_RX_STATE_EXPIRED}, // event 2 PORT_MOVED
54 {LACP_NOACTION, LACP_RX_STATE_EXPIRED}, // event 3 LACP_ENABLED
55 {LACP_NOACTION, LACP_RX_STATE_EXPIRED}, // event 4 LACP_DISABLED
56 {LACP_ACTION_CURRENT, LACP_RX_STATE_CURRENT}, // event 5 PDU_RECEIVED
57 {LACP_ACTION_DEFAULTED, LACP_RX_STATE_DEFAULTED}, // event 6 TIMER_EXPIRED
61 * LACP State = LACP_DISABLED
63 static lacp_fsm_state_t lacp_rx_state_lacp_disabled[] = {
64 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_INITIALIZE}, // event 0 BEGIN
65 {LACP_NOACTION, LACP_RX_STATE_LACP_DISABLED}, // event 1 PORT_DISABLED
66 {LACP_NOACTION, LACP_RX_STATE_LACP_DISABLED}, // event 2 PORT_MOVED
67 {LACP_ACTION_EXPIRED, LACP_RX_STATE_EXPIRED}, // event 3 LACP_ENABLED XXX
68 {LACP_ACTION_LACP_DISABLED, LACP_RX_STATE_LACP_DISABLED}, // event 4 LACP_DISABLED
69 {LACP_NOACTION, LACP_RX_STATE_LACP_DISABLED}, // event 5 PDU_RECEIVED
70 {LACP_NOACTION, LACP_RX_STATE_LACP_DISABLED}, // event 6 TIMER_EXPIRED
74 * LACP State = DEFAULTED
76 static lacp_fsm_state_t lacp_rx_state_defaulted[] = {
77 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_INITIALIZE}, // event 0 BEGIN
78 {LACP_NOACTION, LACP_RX_STATE_DEFAULTED}, // event 1 PORT_DISABLED
79 {LACP_NOACTION, LACP_RX_STATE_DEFAULTED}, // event 2 PORT_MOVED
80 {LACP_NOACTION, LACP_RX_STATE_DEFAULTED}, // event 3 LACP_ENABLED
81 {LACP_ACTION_LACP_DISABLED, LACP_RX_STATE_LACP_DISABLED}, // event 4 LACP_DISABLED
82 {LACP_ACTION_CURRENT, LACP_RX_STATE_CURRENT}, // event 5 PDU_RECEIVED
83 {LACP_ACTION_DEFAULTED, LACP_RX_STATE_DEFAULTED}, // event 6 TIMER_EXPIRED
87 * LACP State = CURRENT
89 static lacp_fsm_state_t lacp_rx_state_current[] = {
90 {LACP_ACTION_INITIALIZE, LACP_RX_STATE_INITIALIZE}, // event 0 BEGIN
91 {LACP_NOACTION, LACP_RX_STATE_CURRENT}, // event 1 PORT_DISABLED
92 {LACP_NOACTION, LACP_RX_STATE_CURRENT}, // event 1 PORT_MOVED
93 {LACP_NOACTION, LACP_RX_STATE_CURRENT}, // event 2 LACP_ENABLED
94 {LACP_ACTION_LACP_DISABLED, LACP_RX_STATE_LACP_DISABLED}, // event 3 LACP_DISABLED
95 {LACP_ACTION_CURRENT, LACP_RX_STATE_CURRENT}, // event 4 PDU_RECEIVED
96 {LACP_ACTION_EXPIRED, LACP_RX_STATE_EXPIRED}, // event 5 TIMER_EXPIRED
99 static lacp_fsm_machine_t lacp_rx_fsm_table[] = {
100 {lacp_rx_state_initialize},
101 {lacp_rx_state_port_disabled},
102 {lacp_rx_state_expired},
103 {lacp_rx_state_lacp_disabled},
104 {lacp_rx_state_defaulted},
105 {lacp_rx_state_current},
108 lacp_machine_t lacp_rx_machine = {
114 lacp_set_port_unselected (vlib_main_t * vm, slave_if_t * sif)
116 sif->selected = LACP_PORT_UNSELECTED;
118 switch (sif->mux_state)
120 case LACP_MUX_STATE_DETACHED:
122 case LACP_MUX_STATE_WAITING:
124 case LACP_MUX_STATE_ATTACHED:
127 case LACP_MUX_STATE_COLLECTING_DISTRIBUTING:
128 if (sif->partner.state & LACP_STATE_SYNCHRONIZATION)
134 lacp_machine_dispatch (&lacp_mux_machine, vm, sif,
135 LACP_MUX_EVENT_UNSELECTED, &sif->mux_state);
139 lacp_update_default_selected (vlib_main_t * vm, slave_if_t * sif)
141 if ((sif->partner_admin.state & LACP_STATE_AGGREGATION) !=
142 (sif->partner.state & LACP_STATE_AGGREGATION) ||
143 memcmp (&sif->partner, &sif->partner_admin,
144 sizeof (sif->partner) - sizeof (sif->partner.state)))
146 lacp_set_port_unselected (vm, sif);
151 lacp_record_default (slave_if_t * sif)
153 sif->partner = sif->partner_admin;
154 sif->actor.state |= LACP_STATE_DEFAULTED;
158 lacp_update_selected (vlib_main_t * vm, slave_if_t * sif)
160 lacp_pdu_t *lacpdu = (lacp_pdu_t *) sif->last_rx_pkt;
162 if ((lacpdu->actor.port_info.state & LACP_STATE_AGGREGATION) !=
163 (sif->partner.state & LACP_STATE_AGGREGATION) ||
164 memcmp (&sif->partner, &lacpdu->actor.port_info,
165 sizeof (sif->partner) - sizeof (sif->partner.state)))
167 lacp_set_port_unselected (vm, sif);
172 lacp_update_ntt (vlib_main_t * vm, slave_if_t * sif)
174 lacp_pdu_t *lacpdu = (lacp_pdu_t *) sif->last_rx_pkt;
175 u8 states = LACP_STATE_LACP_ACTIVITY | LACP_STATE_LACP_TIMEOUT |
176 LACP_STATE_SYNCHRONIZATION | LACP_STATE_AGGREGATION;
177 lacp_main_t *lm = &lacp_main;
179 if ((states & lacpdu->partner.port_info.state) !=
180 (states & sif->actor.state)
181 || memcmp (&sif->actor, &lacpdu->partner.port_info,
182 sizeof (sif->actor) - sizeof (sif->actor.state)))
185 lacp_start_periodic_timer (lm->vlib_main, sif, 0);
190 * compare lacpdu partner info against sif->partner. Return 1 if they match, 0
194 lacp_compare_partner (slave_if_t * sif)
196 lacp_pdu_t *lacpdu = (lacp_pdu_t *) sif->last_rx_pkt;
198 if ((!memcmp (&sif->partner, &lacpdu->actor.port_info,
199 sizeof (sif->partner) - sizeof (sif->partner.state)) &&
200 ((sif->actor.state & LACP_STATE_AGGREGATION) ==
201 (lacpdu->partner.port_info.state & LACP_STATE_AGGREGATION))) ||
202 ((lacpdu->actor.port_info.state & LACP_STATE_AGGREGATION) == 0))
209 lacp_record_pdu (slave_if_t * sif)
211 lacp_pdu_t *lacpdu = (lacp_pdu_t *) sif->last_rx_pkt;
214 match = lacp_compare_partner (sif);
215 sif->partner = lacpdu->actor.port_info;
216 sif->actor.state &= ~LACP_STATE_DEFAULTED;
217 if (match && (lacpdu->actor.port_info.state & LACP_STATE_SYNCHRONIZATION))
218 sif->partner.state |= LACP_STATE_SYNCHRONIZATION;
220 sif->partner.state &= ~LACP_STATE_SYNCHRONIZATION;
224 lacp_set_port_moved (vlib_main_t * vm, slave_if_t * sif, u8 val)
226 sif->port_moved = val;
229 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
230 LACP_RX_EVENT_PORT_MOVED, &sif->rx_state);
231 else if (!sif->port_enabled)
232 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
233 LACP_RX_EVENT_PORT_DISABLED, &sif->rx_state);
237 lacp_rx_action_initialize (void *p1, void *p2)
239 vlib_main_t *vm = (vlib_main_t *) p1;
240 slave_if_t *sif = (slave_if_t *) p2;
242 lacp_set_port_unselected (vm, sif);
243 lacp_record_default (sif);
244 sif->actor.state &= ~LACP_STATE_EXPIRED;
245 lacp_set_port_moved (vm, sif, 0);
247 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
248 LACP_RX_EVENT_BEGIN, &sif->rx_state);
254 lacp_rx_action_port_disabled (void *p1, void *p2)
256 vlib_main_t *vm = (vlib_main_t *) p1;
257 slave_if_t *sif = (slave_if_t *) p2;
259 sif->partner.state &= ~LACP_STATE_SYNCHRONIZATION;
262 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
263 LACP_RX_EVENT_PORT_MOVED, &sif->rx_state);
265 if (sif->port_enabled)
267 if (sif->lacp_enabled)
268 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
269 LACP_RX_EVENT_LACP_ENABLED, &sif->rx_state);
271 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
272 LACP_RX_EVENT_LACP_DISABLED, &sif->rx_state);
279 lacp_rx_action_expired (void *p1, void *p2)
281 vlib_main_t *vm = (vlib_main_t *) p1;
282 slave_if_t *sif = (slave_if_t *) p2;
284 lacp_main_t *lm = &lacp_main;
286 sif->partner.state &= ~LACP_STATE_SYNCHRONIZATION;
287 sif->partner.state |= LACP_STATE_LACP_TIMEOUT;
288 lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
289 LACP_PTX_EVENT_SHORT_TIMEOUT, &sif->ptx_state);
290 if (lacp_timer_is_running (sif->current_while_timer) &&
291 lacp_timer_is_expired (lm->vlib_main, sif->current_while_timer))
295 lacp_start_current_while_timer (lm->vlib_main, sif, sif->ttl_in_seconds);
296 sif->actor.state |= LACP_STATE_EXPIRED;
298 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
299 LACP_RX_EVENT_TIMER_EXPIRED, &sif->rx_state);
300 if (sif->last_rx_pkt && vec_len (sif->last_rx_pkt))
301 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
302 LACP_RX_EVENT_PDU_RECEIVED, &sif->rx_state);
308 lacp_rx_action_lacp_disabled (void *p1, void *p2)
310 vlib_main_t *vm = (vlib_main_t *) p1;
311 slave_if_t *sif = (slave_if_t *) p2;
313 lacp_set_port_unselected (vm, sif);
314 lacp_record_default (sif);
315 sif->partner.state &= ~LACP_STATE_AGGREGATION;
316 sif->actor.state &= ~LACP_STATE_EXPIRED;
322 lacp_rx_action_defaulted (void *p1, void *p2)
324 vlib_main_t *vm = (vlib_main_t *) p1;
325 slave_if_t *sif = (slave_if_t *) p2;
327 lacp_update_default_selected (vm, sif);
328 lacp_record_default (sif);
329 sif->actor.state &= ~LACP_STATE_EXPIRED;
330 if (sif->last_rx_pkt && vec_len (sif->last_rx_pkt))
331 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
332 LACP_RX_EVENT_PDU_RECEIVED, &sif->rx_state);
338 lacp_port_is_moved (vlib_main_t * vm, slave_if_t * sif)
340 bond_main_t *bm = &bond_main;
342 lacp_pdu_t *lacpdu = (lacp_pdu_t *) sif->last_rx_pkt;
345 pool_foreach (sif2, bm->neighbors, {
347 if ((sif != sif2) && (sif2->rx_state == LACP_RX_STATE_PORT_DISABLED) &&
348 !memcmp (sif2->partner.system,
349 lacpdu->partner.port_info.system, 6) &&
350 (sif2->partner.port_number == lacpdu->partner.port_info.port_number))
360 lacp_rx_action_current (void *p1, void *p2)
362 vlib_main_t *vm = (vlib_main_t *) p1;
363 slave_if_t *sif = (slave_if_t *) p2;
364 lacp_main_t *lm = &lacp_main;
366 lacp_update_selected (vm, sif);
367 lacp_update_ntt (vm, sif);
368 lacp_record_pdu (sif);
369 lacp_start_current_while_timer (lm->vlib_main, sif, sif->ttl_in_seconds);
370 sif->actor.state &= ~LACP_STATE_EXPIRED;
371 if (lacp_port_is_moved (vm, sif))
372 lacp_set_port_moved (vm, sif, 1);
373 lacp_selection_logic (vm, sif);
379 format_rx_event (u8 * s, va_list * args)
381 static lacp_event_struct lacp_rx_event_array[] = {
382 #define _(b, s, n) {.bit = b, .str = #s, },
383 foreach_lacp_rx_event
387 int e = va_arg (*args, int);
388 lacp_event_struct *event_entry =
389 (lacp_event_struct *) & lacp_rx_event_array;
391 if (e >= (sizeof (lacp_rx_event_array) / sizeof (*event_entry)))
392 s = format (s, "Bad event %d", e);
394 s = format (s, "%s", event_entry[e].str);
400 lacp_rx_debug_func (slave_if_t * sif, int event, int state,
401 lacp_fsm_state_t * transition)
403 clib_warning ("%U-RX: event %U, old state %U, new state %U",
404 format_vnet_sw_if_index_name, vnet_get_main (),
405 sif->sw_if_index, format_rx_event,
406 event, format_rx_sm_state, state, format_rx_sm_state,
407 transition->next_state);
411 lacp_init_rx_machine (vlib_main_t * vm, slave_if_t * sif)
413 lacp_machine_dispatch (&lacp_rx_machine, vm, sif, LACP_RX_EVENT_BEGIN,
415 lacp_machine_dispatch (&lacp_rx_machine, vm, sif,
416 LACP_RX_EVENT_LACP_ENABLED, &sif->rx_state);
420 * fd.io coding-style-patch-verification: ON
423 * eval: (c-set-style "gnu")