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, member_if_t * mif)
116 mif->selected = LACP_PORT_UNSELECTED;
118 switch (mif->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 (mif->partner.state & LACP_STATE_SYNCHRONIZATION)
134 lacp_machine_dispatch (&lacp_mux_machine, vm, mif,
135 LACP_MUX_EVENT_UNSELECTED, &mif->mux_state);
139 lacp_update_default_selected (vlib_main_t * vm, member_if_t * mif)
141 if ((mif->partner_admin.state & LACP_STATE_AGGREGATION) !=
142 (mif->partner.state & LACP_STATE_AGGREGATION) ||
143 memcmp (&mif->partner, &mif->partner_admin,
144 sizeof (mif->partner) - sizeof (mif->partner.state)))
146 lacp_set_port_unselected (vm, mif);
151 lacp_record_default (member_if_t * mif)
153 mif->partner = mif->partner_admin;
154 mif->actor.state |= LACP_STATE_DEFAULTED;
158 lacp_update_selected (vlib_main_t * vm, member_if_t * mif)
160 lacp_pdu_t *lacpdu = (lacp_pdu_t *) mif->last_rx_pkt;
162 if ((lacpdu->actor.port_info.state & LACP_STATE_AGGREGATION) !=
163 (mif->partner.state & LACP_STATE_AGGREGATION) ||
164 memcmp (&mif->partner, &lacpdu->actor.port_info,
165 sizeof (mif->partner) - sizeof (mif->partner.state)))
167 lacp_set_port_unselected (vm, mif);
172 lacp_update_ntt (vlib_main_t * vm, member_if_t * mif)
174 lacp_pdu_t *lacpdu = (lacp_pdu_t *) mif->last_rx_pkt;
175 u8 states = LACP_STATE_LACP_ACTIVITY | LACP_STATE_LACP_TIMEOUT |
176 LACP_STATE_SYNCHRONIZATION | LACP_STATE_AGGREGATION;
178 if ((states & lacpdu->partner.port_info.state) !=
179 (states & mif->actor.state)
180 || memcmp (&mif->actor, &lacpdu->partner.port_info,
181 sizeof (mif->actor) - sizeof (mif->actor.state)))
184 lacp_start_periodic_timer (vm, mif, 0);
189 * compare lacpdu partner info against mif->partner. Return 1 if they match, 0
193 lacp_compare_partner (member_if_t * mif)
195 lacp_pdu_t *lacpdu = (lacp_pdu_t *) mif->last_rx_pkt;
197 if ((!memcmp (&mif->partner, &lacpdu->actor.port_info,
198 sizeof (mif->partner) - sizeof (mif->partner.state)) &&
199 ((mif->actor.state & LACP_STATE_AGGREGATION) ==
200 (lacpdu->partner.port_info.state & LACP_STATE_AGGREGATION))) ||
201 ((lacpdu->actor.port_info.state & LACP_STATE_AGGREGATION) == 0))
208 lacp_record_pdu (vlib_main_t * vm, member_if_t * mif)
210 lacp_pdu_t *lacpdu = (lacp_pdu_t *) mif->last_rx_pkt;
213 /* Transition PTX out of NO_PERIODIC if needed */
214 if (!(mif->partner.state & LACP_STATE_LACP_ACTIVITY) &&
215 (lacpdu->actor.port_info.state & LACP_STATE_LACP_ACTIVITY))
216 lacp_ptx_post_short_timeout_event (vm, mif);
217 match = lacp_compare_partner (mif);
218 mif->partner = lacpdu->actor.port_info;
219 mif->actor.state &= ~LACP_STATE_DEFAULTED;
220 if (match && (lacpdu->actor.port_info.state & LACP_STATE_SYNCHRONIZATION))
221 mif->partner.state |= LACP_STATE_SYNCHRONIZATION;
223 mif->partner.state &= ~LACP_STATE_SYNCHRONIZATION;
227 lacp_set_port_moved (vlib_main_t * vm, member_if_t * mif, u8 val)
229 mif->port_moved = val;
232 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
233 LACP_RX_EVENT_PORT_MOVED, &mif->rx_state);
234 else if (!mif->port_enabled)
235 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
236 LACP_RX_EVENT_PORT_DISABLED, &mif->rx_state);
240 lacp_rx_action_initialize (void *p1, void *p2)
242 vlib_main_t *vm = p1;
243 member_if_t *mif = p2;
245 lacp_set_port_unselected (vm, mif);
246 lacp_record_default (mif);
247 mif->actor.state &= ~LACP_STATE_EXPIRED;
248 lacp_set_port_moved (vm, mif, 0);
250 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
251 LACP_RX_EVENT_BEGIN, &mif->rx_state);
257 lacp_rx_action_port_disabled (void *p1, void *p2)
259 vlib_main_t *vm = p1;
260 member_if_t *mif = p2;
262 mif->partner.state &= ~LACP_STATE_SYNCHRONIZATION;
265 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
266 LACP_RX_EVENT_PORT_MOVED, &mif->rx_state);
268 if (mif->port_enabled)
270 if (mif->lacp_enabled)
271 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
272 LACP_RX_EVENT_LACP_ENABLED, &mif->rx_state);
274 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
275 LACP_RX_EVENT_LACP_DISABLED, &mif->rx_state);
282 lacp_rx_action_expired (void *p1, void *p2)
284 vlib_main_t *vm = p1;
285 member_if_t *mif = p2;
288 mif->partner.state &= ~LACP_STATE_SYNCHRONIZATION;
289 mif->partner.state |= LACP_STATE_LACP_TIMEOUT;
290 lacp_ptx_post_short_timeout_event (vm, mif);
291 if (lacp_timer_is_running (mif->current_while_timer) &&
292 lacp_timer_is_expired (vm, mif->current_while_timer))
296 lacp_start_current_while_timer (vm, mif, mif->ttl_in_seconds);
297 mif->actor.state |= LACP_STATE_EXPIRED;
299 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
300 LACP_RX_EVENT_TIMER_EXPIRED, &mif->rx_state);
301 if (mif->last_rx_pkt && vec_len (mif->last_rx_pkt))
302 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
303 LACP_RX_EVENT_PDU_RECEIVED, &mif->rx_state);
309 lacp_rx_action_lacp_disabled (void *p1, void *p2)
311 vlib_main_t *vm = p1;
312 member_if_t *mif = p2;
314 lacp_set_port_unselected (vm, mif);
315 lacp_record_default (mif);
316 mif->partner.state &= ~LACP_STATE_AGGREGATION;
317 mif->actor.state &= ~LACP_STATE_EXPIRED;
323 lacp_rx_action_defaulted (void *p1, void *p2)
325 vlib_main_t *vm = p1;
326 member_if_t *mif = p2;
328 lacp_stop_timer (&mif->current_while_timer);
329 lacp_update_default_selected (vm, mif);
330 lacp_record_default (mif);
331 mif->actor.state &= ~LACP_STATE_EXPIRED;
332 if (mif->last_rx_pkt && vec_len (mif->last_rx_pkt))
333 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
334 LACP_RX_EVENT_PDU_RECEIVED, &mif->rx_state);
340 lacp_port_is_moved (vlib_main_t * vm, member_if_t * mif)
342 bond_main_t *bm = &bond_main;
344 lacp_pdu_t *lacpdu = (lacp_pdu_t *) mif->last_rx_pkt;
347 pool_foreach (mif2, bm->neighbors, {
349 if ((mif != mif2) && (mif2->rx_state == LACP_RX_STATE_PORT_DISABLED) &&
350 !memcmp (mif2->partner.system,
351 lacpdu->partner.port_info.system, 6) &&
352 (mif2->partner.port_number == lacpdu->partner.port_info.port_number))
362 lacp_rx_action_current (void *p1, void *p2)
364 vlib_main_t *vm = p1;
365 member_if_t *mif = p2;
367 lacp_update_selected (vm, mif);
368 lacp_update_ntt (vm, mif);
369 lacp_record_pdu (vm, mif);
370 lacp_start_current_while_timer (vm, mif, mif->ttl_in_seconds);
371 mif->actor.state &= ~LACP_STATE_EXPIRED;
372 if (lacp_port_is_moved (vm, mif))
373 lacp_set_port_moved (vm, mif, 1);
374 lacp_selection_logic (vm, mif);
380 format_rx_event (u8 * s, va_list * args)
382 static lacp_event_struct lacp_rx_event_array[] = {
383 #define _(b, s, n) {.bit = b, .str = #s, },
384 foreach_lacp_rx_event
388 int e = va_arg (*args, int);
389 lacp_event_struct *event_entry = 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 (member_if_t * mif, int event, int state,
401 lacp_fsm_state_t * transition)
403 vlib_worker_thread_t *w = vlib_worker_threads + os_get_thread_index ();
405 ELOG_TYPE_DECLARE (e) =
416 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track);
417 ed->event = elog_string (&vlib_global_main.elog_main, "%U-RX: %U, %U->%U%c",
418 format_vnet_sw_if_index_name, vnet_get_main (),
419 mif->sw_if_index, format_rx_event, event,
420 format_rx_sm_state, state, format_rx_sm_state,
421 transition->next_state, 0);
425 lacp_init_rx_machine (vlib_main_t * vm, member_if_t * mif)
427 lacp_machine_dispatch (&lacp_rx_machine, vm, mif, LACP_RX_EVENT_BEGIN,
429 lacp_machine_dispatch (&lacp_rx_machine, vm, mif,
430 LACP_RX_EVENT_LACP_ENABLED, &mif->rx_state);
434 * fd.io coding-style-patch-verification: ON
437 * eval: (c-set-style "gnu")