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Vector Packet Processing
ptx_machine.h
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1 /*
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:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15 
16 #ifndef ___LACP_PTX_MACHINE_H__
17 #define ___LACP_PTX_MACHINE_H__
18 
19 #include <stdint.h>
20 #include <lacp/machine.h>
21 
22 #define foreach_lacp_ptx_event \
23  _(0, NO_PERIODIC, "no periodic") \
24  _(1, LONG_TIMEOUT, "long tiemout") \
25  _(2, TIMER_EXPIRED, "timer expired") \
26  _(3, SHORT_TIMEOUT, "short timeout")
27 
28 typedef enum
29 {
30 #define _(a, b, c) LACP_PTX_EVENT_##b = (a),
32 #undef _
34 
35 #define foreach_lacp_ptx_sm_state \
36  _(0, NO_PERIODIC, "no periodic") \
37  _(1, FAST_PERIODIC, "fast periodic") \
38  _(2, SLOW_PERIODIC, "slow periodic") \
39  _(3, PERIODIC_TX, "periodic transmission")
40 
41 typedef enum
42 {
43 #define _(a, b, c) LACP_PTX_STATE_##b = (a),
45 #undef _
47 
49 
50 int lacp_ptx_action_no_periodic (void *p1, void *p2);
51 int lacp_ptx_action_slow_periodic (void *p1, void *p2);
52 int lacp_ptx_action_fast_periodic (void *p1, void *p2);
53 int lacp_ptx_action_timer_expired (void *p1, void *p2);
54 void lacp_ptx_debug_func (slave_if_t * sif, int event, int state,
55  lacp_fsm_state_t * transition);
56 
57 #define LACP_ACTION_NO_PERIODIC \
58  LACP_ACTION_ROUTINE(lacp_ptx_action_no_periodic)
59 #define LACP_ACTION_SLOW_PERIODIC \
60  LACP_ACTION_ROUTINE(lacp_ptx_action_slow_periodic)
61 #define LACP_ACTION_FAST_PERIODIC \
62  LACP_ACTION_ROUTINE(lacp_ptx_action_fast_periodic)
63 #define LACP_ACTION_TIMER_EXPIRED \
64  LACP_ACTION_ROUTINE(lacp_ptx_action_timer_expired)
65 
66 static inline void
68 {
69  sif->periodic_timer = vlib_time_now (vm) + expiration;
70 }
71 
72 static inline void
74 {
75  // do fast rate if partner is in short timeout or
76  // we are not yet synchronized
77  if ((sif->partner.state & LACP_STATE_LACP_TIMEOUT) ||
78  (((sif->actor.state & (LACP_STATE_SYNCHRONIZATION |
79  LACP_STATE_COLLECTING |
80  LACP_STATE_DISTRIBUTING)) !=
81  (LACP_STATE_SYNCHRONIZATION | LACP_STATE_COLLECTING |
82  LACP_STATE_DISTRIBUTING))
83  && (sif->partner.state & LACP_STATE_AGGREGATION)))
85  else
87 }
88 
89 static inline void
91 {
92  if (sif->lacp_enabled && sif->port_enabled &&
93  ((sif->partner.state & LACP_STATE_LACP_ACTIVITY) ||
94  (sif->actor.state & LACP_STATE_LACP_ACTIVITY)))
95  lacp_machine_dispatch (&lacp_ptx_machine, vm, sif,
96  LACP_PTX_EVENT_SHORT_TIMEOUT, &sif->ptx_state);
97 }
98 
99 #endif /* __LACP_PTX_MACHINE_H__ */
100 
101 /*
102  * fd.io coding-style-patch-verification: ON
103  *
104  * Local Variables:
105  * eval: (c-set-style "gnu")
106  * End:
107  */
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:279
#define LACP_FAST_PERIODIC_TIMER
Definition: node.h:25
unsigned char u8
Definition: types.h:56
f64 periodic_timer
Definition: node.h:295
lacp_ptx_sm_state_t
Definition: ptx_machine.h:41
lacp_port_info_t actor
Definition: node.h:246
int lacp_ptx_action_timer_expired(void *p1, void *p2)
Definition: ptx_machine.c:151
vhost_vring_state_t state
Definition: vhost_user.h:146
#define LACP_SLOW_PERIODIC_TIMER
Definition: node.h:27
lacp_machine_t lacp_ptx_machine
Definition: ptx_machine.c:69
int ptx_state
Definition: node.h:307
lacp_ptx_event_t
Definition: ptx_machine.h:28
vlib_main_t * vm
Definition: buffer.c:323
int lacp_ptx_action_no_periodic(void *p1, void *p2)
Definition: ptx_machine.c:75
lacp_port_info_t partner
Definition: node.h:245
void lacp_ptx_debug_func(slave_if_t *sif, int event, int state, lacp_fsm_state_t *transition)
Definition: ptx_machine.c:197
#define foreach_lacp_ptx_event
Definition: ptx_machine.h:22
static void lacp_schedule_periodic_timer(vlib_main_t *vm, slave_if_t *sif)
Definition: ptx_machine.h:73
#define foreach_lacp_ptx_sm_state
Definition: ptx_machine.h:35
u8 lacp_enabled
Definition: node.h:262
static void lacp_start_periodic_timer(vlib_main_t *vm, slave_if_t *sif, u8 expiration)
Definition: ptx_machine.h:67
u8 port_enabled
Definition: node.h:256
int lacp_ptx_action_slow_periodic(void *p1, void *p2)
Definition: ptx_machine.c:86
static void lacp_ptx_post_short_timeout_event(vlib_main_t *vm, slave_if_t *sif)
Definition: ptx_machine.h:90
int lacp_ptx_action_fast_periodic(void *p1, void *p2)
Definition: ptx_machine.c:116
int lacp_machine_dispatch(lacp_machine_t *machine, vlib_main_t *vm, slave_if_t *sif, int event, int *state)
Definition: lacp.c:300