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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.
*/
#ifndef ___LACP_PTX_MACHINE_H__
#define ___LACP_PTX_MACHINE_H__
#include <stdint.h>
#include <lacp/machine.h>
#define foreach_lacp_ptx_event \
_(0, NO_PERIODIC, "no periodic") \
_(1, LONG_TIMEOUT, "long tiemout") \
_(2, TIMER_EXPIRED, "timer expired") \
_(3, SHORT_TIMEOUT, "short timeout")
typedef enum
{
#define _(a, b, c) LACP_PTX_EVENT_##b = (a),
foreach_lacp_ptx_event
#undef _
} lacp_ptx_event_t;
#define foreach_lacp_ptx_sm_state \
_(0, NO_PERIODIC, "no periodic") \
_(1, FAST_PERIODIC, "fast periodic") \
_(2, SLOW_PERIODIC, "slow periodic") \
_(3, PERIODIC_TX, "periodic transmission")
typedef enum
{
#define _(a, b, c) LACP_PTX_STATE_##b = (a),
foreach_lacp_ptx_sm_state
#undef _
} lacp_ptx_sm_state_t;
extern lacp_machine_t lacp_ptx_machine;
int lacp_ptx_action_no_periodic (void *p1, void *p2);
int lacp_ptx_action_slow_periodic (void *p1, void *p2);
int lacp_ptx_action_fast_periodic (void *p1, void *p2);
int lacp_ptx_action_timer_expired (void *p1, void *p2);
void lacp_ptx_debug_func (slave_if_t * sif, int event, int state,
lacp_fsm_state_t * transition);
#define LACP_ACTION_NO_PERIODIC \
LACP_ACTION_ROUTINE(lacp_ptx_action_no_periodic)
#define LACP_ACTION_SLOW_PERIODIC \
LACP_ACTION_ROUTINE(lacp_ptx_action_slow_periodic)
#define LACP_ACTION_FAST_PERIODIC \
LACP_ACTION_ROUTINE(lacp_ptx_action_fast_periodic)
#define LACP_ACTION_TIMER_EXPIRED \
LACP_ACTION_ROUTINE(lacp_ptx_action_timer_expired)
static inline void
lacp_start_periodic_timer (vlib_main_t * vm, slave_if_t * sif, u8 expiration)
{
sif->periodic_timer = vlib_time_now (vm) + expiration;
}
static inline void
lacp_schedule_periodic_timer (vlib_main_t * vm, slave_if_t * sif)
{
// do fast rate if partner is in short timeout or
// we are not yet synchronized
if ((sif->partner.state & LACP_STATE_LACP_TIMEOUT) ||
(((sif->actor.state & (LACP_STATE_SYNCHRONIZATION |
LACP_STATE_COLLECTING |
LACP_STATE_DISTRIBUTING)) !=
(LACP_STATE_SYNCHRONIZATION | LACP_STATE_COLLECTING |
LACP_STATE_DISTRIBUTING))
&& (sif->partner.state & LACP_STATE_AGGREGATION)))
lacp_start_periodic_timer (vm, sif, LACP_FAST_PERIODIC_TIMER);
else
lacp_start_periodic_timer (vm, sif, LACP_SLOW_PERIODIC_TIMER);
}
static inline void
lacp_ptx_post_short_timeout_event (vlib_main_t * vm, slave_if_t * sif)
{
if (sif->lacp_enabled && sif->port_enabled &&
((sif->partner.state & LACP_STATE_LACP_ACTIVITY) ||
(sif->actor.state & LACP_STATE_LACP_ACTIVITY)))
lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
LACP_PTX_EVENT_SHORT_TIMEOUT, &sif->ptx_state);
}
#endif /* __LACP_PTX_MACHINE_H__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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