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/*
* 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 <vnet/bonding/node.h>
#include <lacp/node.h>
/*
* LACP State = NO_PERIODIC
*/
static lacp_fsm_state_t lacp_ptx_state_no_periodic[] = {
{LACP_ACTION_NO_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 0 BEGIN
{LACP_NOACTION, LACP_PTX_STATE_NO_PERIODIC}, // event 1 LONG_TIMEOUT
{LACP_NOACTION, LACP_PTX_STATE_NO_PERIODIC}, // event 2 TIMER_EXPIRED
{LACP_NOACTION, LACP_PTX_STATE_NO_PERIODIC}, // event 3 SHORT_TIMEOUT
};
/*
* LACP State = FAST_PERIODIC
*/
static lacp_fsm_state_t lacp_ptx_state_fast_periodic[] = {
{LACP_ACTION_FAST_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 0 BEGIN
{LACP_ACTION_SLOW_PERIODIC, LACP_PTX_STATE_SLOW_PERIODIC}, // event 1 LONG_TIMEOUT
{LACP_ACTION_TIMER_EXPIRED, LACP_PTX_STATE_PERIODIC_TX}, // event 2 TIMER_EXPIRED
{LACP_ACTION_FAST_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 3 SHORT_TIMEOUT
};
/*
* LACP State = SLOW_PERIODIC
*/
static lacp_fsm_state_t lacp_ptx_state_slow_periodic[] = {
{LACP_ACTION_NO_PERIODIC, LACP_PTX_STATE_NO_PERIODIC}, // event 0 BEGIN
{LACP_ACTION_SLOW_PERIODIC, LACP_PTX_STATE_SLOW_PERIODIC}, // event 1 LONG_TIMEOUT
{LACP_ACTION_TIMER_EXPIRED, LACP_PTX_STATE_PERIODIC_TX}, // event 2 TIMER_EXPIRED
{LACP_ACTION_FAST_PERIODIC, LACP_PTX_STATE_FAST_PERIODIC}, // event 3 SHORT_TIMEOUT
};
/*
* LACP State = PERIODIC_TX
*/
static lacp_fsm_state_t lacp_ptx_state_periodic_tx[] = {
{LACP_ACTION_NO_PERIODIC, LACP_PTX_STATE_NO_PERIODIC}, // event 0 BEGIN
{LACP_NOACTION, LACP_PTX_STATE_PERIODIC_TX}, // event 1 LONG_TIMEOUT
{LACP_ACTION_TIMER_EXPIRED, LACP_PTX_STATE_PERIODIC_TX}, // event 2 TIMER_EXPIRED
{LACP_NOACTION, LACP_PTX_STATE_PERIODIC_TX}, // event 3 SHORT_TIMEOUT
};
static lacp_fsm_machine_t lacp_ptx_fsm_table[] = {
{lacp_ptx_state_no_periodic},
{lacp_ptx_state_fast_periodic},
{lacp_ptx_state_slow_periodic},
{lacp_ptx_state_periodic_tx},
};
lacp_machine_t lacp_ptx_machine = {
lacp_ptx_fsm_table,
lacp_ptx_debug_func,
};
int
lacp_ptx_action_no_periodic (void *p1, void *p2)
{
vlib_main_t *vm = (vlib_main_t *) p1;
slave_if_t *sif = (slave_if_t *) p2;
lacp_stop_timer (&sif->periodic_timer);
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
LACP_PTX_EVENT_BEGIN, &sif->ptx_state);
return 0;
}
int
lacp_ptx_action_slow_periodic (void *p1, void *p2)
{
vlib_main_t *vm = (vlib_main_t *) p1;
slave_if_t *sif = (slave_if_t *) p2;
u8 timer_expired;
lacp_main_t *lm = &lacp_main;
if (lacp_timer_is_running (sif->periodic_timer) &&
lacp_timer_is_expired (lm->vlib_main, sif->periodic_timer))
timer_expired = 1;
else
timer_expired = 0;
lacp_schedule_periodic_timer (lm->vlib_main, sif);
if (timer_expired || (sif->partner.state & LACP_STATE_LACP_TIMEOUT))
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
LACP_PTX_EVENT_TIMER_EXPIRED, &sif->ptx_state);
return 0;
}
int
lacp_ptx_action_fast_periodic (void *p1, void *p2)
{
vlib_main_t *vm = (vlib_main_t *) p1;
slave_if_t *sif = (slave_if_t *) p2;
u8 timer_expired;
lacp_main_t *lm = &lacp_main;
if (lacp_timer_is_running (sif->periodic_timer) &&
lacp_timer_is_expired (lm->vlib_main, sif->periodic_timer))
timer_expired = 1;
else
timer_expired = 0;
lacp_start_periodic_timer (lm->vlib_main, sif, LACP_FAST_PERIODIC_TIMER);
if (timer_expired)
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
LACP_PTX_EVENT_TIMER_EXPIRED, &sif->ptx_state);
if (!(sif->partner.state & LACP_STATE_LACP_TIMEOUT))
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
LACP_PTX_EVENT_LONG_TIMEOUT, &sif->ptx_state);
return 0;
}
int
lacp_ptx_action_timer_expired (void *p1, void *p2)
{
vlib_main_t *vm = (vlib_main_t *) p1;
slave_if_t *sif = (slave_if_t *) p2;
sif->ntt = 1;
lacp_machine_dispatch (&lacp_tx_machine, vm, sif, LACP_TX_EVENT_NTT,
&sif->tx_state);
if (sif->partner.state & LACP_STATE_LACP_TIMEOUT)
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
LACP_PTX_EVENT_SHORT_TIMEOUT, &sif->ptx_state);
else
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
LACP_PTX_EVENT_LONG_TIMEOUT, &sif->ptx_state);
return 0;
}
static u8 *
format_ptx_event (u8 * s, va_list * args)
{
static lacp_event_struct lacp_ptx_event_array[] = {
#define _(b, s, n) {.bit = b, .str = #s, },
foreach_lacp_ptx_event
#undef _
{.str = NULL}
};
int e = va_arg (*args, int);
lacp_event_struct *event_entry =
(lacp_event_struct *) & lacp_ptx_event_array;
if (e >= (sizeof (lacp_ptx_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_ptx_debug_func (slave_if_t * sif, int event, int state,
lacp_fsm_state_t * transition)
{
clib_warning ("%U-PTX: event %U, old state %U, new state %U",
format_vnet_sw_if_index_name, vnet_get_main (),
sif->sw_if_index, format_ptx_event,
event, format_ptx_sm_state, state, format_ptx_sm_state,
transition->next_state);
}
void
lacp_init_ptx_machine (vlib_main_t * vm, slave_if_t * sif)
{
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif, LACP_PTX_EVENT_BEGIN,
&sif->ptx_state);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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