FD.io VPP  v17.07-30-g839fa73
Vector Packet Processing
api.c
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1 /*
2  * Copyright (c) 2016 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 #include <lb/lb.h>
17 
18 #include <vppinfra/byte_order.h>
19 #include <vlibapi/api.h>
20 #include <vlibapi/api.h>
21 #include <vlibmemory/api.h>
22 #include <vlibsocket/api.h>
23 
24 #define vl_msg_id(n,h) n,
25 typedef enum {
26 #include <lb/lb.api.h>
27  /* We'll want to know how many messages IDs we need... */
29 } vl_msg_id_t;
30 #undef vl_msg_id
31 
32 
33 /* define message structures */
34 #define vl_typedefs
35 #include <lb/lb.api.h>
36 #undef vl_typedefs
37 
38 /* define generated endian-swappers */
39 #define vl_endianfun
40 #include <lb/lb.api.h>
41 #undef vl_endianfun
42 
43 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
44 
45 /* Get the API version number */
46 #define vl_api_version(n,v) static u32 api_version=(v);
47 #include <lb/lb.api.h>
48 #undef vl_api_version
49 
50 #define vl_msg_name_crc_list
51 #include <lb/lb.api.h>
52 #undef vl_msg_name_crc_list
53 
54 
55 #define REPLY_MSG_ID_BASE lbm->msg_id_base
57 
58 static void
60 {
61 #define _(id,n,crc) \
62  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + lbm->msg_id_base);
63  foreach_vl_msg_name_crc_lb;
64 #undef _
65 }
66 
67 /* Macro to finish up custom dump fns */
68 #define FINISH \
69  vec_add1 (s, 0); \
70  vl_print (handle, (char *)s); \
71  vec_free (s); \
72  return handle;
73 
74 static void
77 {
78  lb_main_t *lbm = &lb_main;
79  vl_api_lb_conf_reply_t * rmp;
80  int rv = 0;
81 
85  mp->flow_timeout);
86 
87  REPLY_MACRO (VL_API_LB_CONF_REPLY);
88 }
89 
90 static void *vl_api_lb_conf_t_print
91 (vl_api_lb_conf_t *mp, void * handle)
92 {
93  u8 * s;
94  s = format (0, "SCRIPT: lb_conf ");
95  s = format (s, "%U ", format_ip4_address, (ip4_address_t *)&mp->ip4_src_address);
97  s = format (s, "%u ", mp->sticky_buckets_per_core);
98  s = format (s, "%u ", mp->flow_timeout);
99  FINISH;
100 }
101 
102 
103 static void
106 {
107  lb_main_t *lbm = &lb_main;
108  vl_api_lb_conf_reply_t * rmp;
109  int rv = 0;
110  ip46_address_t prefix;
111  memcpy(&prefix.ip6, mp->ip_prefix, sizeof(prefix.ip6));
112 
113  if (mp->is_del) {
114  u32 vip_index;
115  if (!(rv = lb_vip_find_index(&prefix, mp->prefix_length, &vip_index)))
116  rv = lb_vip_del(vip_index);
117  } else {
118  u32 vip_index;
119  lb_vip_type_t type;
120  if (ip46_prefix_is_ip4(&prefix, mp->prefix_length)) {
122  } else {
124  }
125 
126  rv = lb_vip_add(&prefix, mp->prefix_length, type,
127  mp->new_flows_table_length, &vip_index);
128  }
129  REPLY_MACRO (VL_API_LB_CONF_REPLY);
130 }
131 
133 (vl_api_lb_add_del_vip_t *mp, void * handle)
134 {
135  u8 * s;
136  s = format (0, "SCRIPT: lb_add_del_vip ");
137  s = format (s, "%U ", format_ip46_prefix,
138  (ip46_address_t *)mp->ip_prefix, mp->prefix_length, IP46_TYPE_ANY);
139  s = format (s, "%s ", mp->is_gre4?"gre4":"gre6");
140  s = format (s, "%u ", mp->new_flows_table_length);
141  s = format (s, "%s ", mp->is_del?"del":"add");
142  FINISH;
143 }
144 
145 static void
148 {
149  lb_main_t *lbm = &lb_main;
150  vl_api_lb_conf_reply_t * rmp;
151  int rv = 0;
152  u32 vip_index;
153  if ((rv = lb_vip_find_index((ip46_address_t *)mp->vip_ip_prefix,
154  mp->vip_prefix_length, &vip_index)))
155  goto done;
156 
157  if (mp->is_del)
158  rv = lb_vip_del_ass(vip_index, (ip46_address_t *)mp->as_address, 1);
159  else
160  rv = lb_vip_add_ass(vip_index, (ip46_address_t *)mp->as_address, 1);
161 
162 done:
163  REPLY_MACRO (VL_API_LB_CONF_REPLY);
164 }
165 
166 static void *vl_api_lb_add_del_as_t_print
167 (vl_api_lb_add_del_as_t *mp, void * handle)
168 {
169  u8 * s;
170  s = format (0, "SCRIPT: lb_add_del_as ");
171  s = format (s, "%U ", format_ip46_prefix,
172  (ip46_address_t *)mp->vip_ip_prefix, mp->vip_prefix_length, IP46_TYPE_ANY);
173  s = format (s, "%U ", format_ip46_address,
174  (ip46_address_t *)mp->as_address, IP46_TYPE_ANY);
175  s = format (s, "%s ", mp->is_del?"del":"add");
176  FINISH;
177 }
178 
179 /* List of message types that this plugin understands */
180 #define foreach_lb_plugin_api_msg \
181 _(LB_CONF, lb_conf) \
182 _(LB_ADD_DEL_VIP, lb_add_del_vip) \
183 _(LB_ADD_DEL_AS, lb_add_del_as)
184 
186 {
187  lb_main_t *lbm = &lb_main;
188  u8 *name = format (0, "lb_%08x%c", api_version, 0);
190  ((char *) name, VL_MSG_FIRST_AVAILABLE);
191 
192 #define _(N,n) \
193  vl_msg_api_set_handlers((VL_API_##N + lbm->msg_id_base), \
194  #n, \
195  vl_api_##n##_t_handler, \
196  vl_noop_handler, \
197  vl_api_##n##_t_endian, \
198  vl_api_##n##_t_print, \
199  sizeof(vl_api_##n##_t), 1);
201 #undef _
202 
203  /* Add our API messages to the global name_crc hash table */
205 
206  return 0;
207 }
208 
static void vl_api_lb_conf_t_handler(vl_api_lb_conf_t *mp)
Definition: api.c:76
u32 flow_timeout
Definition: lb.api:18
static void * vl_api_lb_add_del_vip_t_print(vl_api_lb_add_del_vip_t *mp, void *handle)
Definition: api.c:133
u16 vl_msg_api_get_msg_ids(const char *name, int n)
Definition: api_shared.c:837
u16 msg_id_base
API dynamically registered base ID.
Definition: lb.h:298
int lb_conf(ip4_address_t *ip4_address, ip6_address_t *ip6_address, u32 per_cpu_sticky_buckets, u32 flow_timeout)
Fix global load-balancer parameters.
Definition: lb.c:363
u8 * format_ip46_prefix(u8 *s, va_list *args)
Definition: util.c:54
int lb_vip_add_ass(u32 vip_index, ip46_address_t *addresses, u32 n)
Definition: lb.c:426
format_function_t format_ip46_address
Definition: format.h:61
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
static void * vl_api_lb_conf_t_print(vl_api_lb_conf_t *mp, void *handle)
Definition: api.c:91
u8 ip6_src_address[16]
Definition: lb.api:16
static void * vl_api_lb_add_del_as_t_print(vl_api_lb_add_del_as_t *mp, void *handle)
Definition: api.c:167
vl_msg_id_t
Definition: api.c:25
format_function_t format_ip4_address
Definition: format.h:79
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
lb_main_t lb_main
Definition: lb.c:27
Definition: lb.h:228
#define FINISH
Definition: api.c:68
int lb_vip_del(u32 vip_index)
Definition: lb.c:696
#define foreach_lb_plugin_api_msg
Definition: api.c:180
#define REPLY_MACRO(t)
Add an application server for a given VIP.
Definition: lb.api:49
u8 vip_ip_prefix[16]
Definition: lb.api:52
#define ip46_prefix_is_ip4(ip46, len)
Definition: util.h:27
api_main_t api_main
Definition: api_shared.c:35
int lb_vip_add(ip46_address_t *prefix, u8 plen, lb_vip_type_t type, u32 new_length, u32 *vip_index)
Definition: lb.c:638
format_function_t format_ip6_address
Definition: format.h:95
u32 new_flows_table_length
Definition: lb.api:37
int lb_vip_del_ass(u32 vip_index, ip46_address_t *addresses, u32 n)
Definition: lb.c:583
u32 sticky_buckets_per_core
Definition: lb.api:17
Add a virtual address (or prefix)
Definition: lb.api:31
unsigned int u32
Definition: types.h:88
lb_vip_type_t
The load balancer supports IPv4 and IPv6 traffic and GRE4 and GRE6 encap.
Definition: lb.h:135
u8 as_address[16]
Definition: lb.api:54
int lb_vip_find_index(ip46_address_t *prefix, u8 plen, u32 *vip_index)
Definition: lb.c:399
Configure Load-Balancer global parameters.
Definition: lb.api:11
unsigned char u8
Definition: types.h:56
u32 ip4_src_address
Definition: lb.api:15
static void vl_api_lb_add_del_vip_t_handler(vl_api_lb_add_del_vip_t *mp)
Definition: api.c:105
static void vl_api_lb_add_del_as_t_handler(vl_api_lb_add_del_as_t *mp)
Definition: api.c:147
static void setup_message_id_table(lb_main_t *lbm, api_main_t *am)
Definition: api.c:59
static clib_error_t * lb_api_init(vlib_main_t *vm)
Definition: api.c:185