pipe_api.c revision 39d69112
1/*
2 *------------------------------------------------------------------
3 * Copyright (c) 2018 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
16 */
17
18#include <vnet/vnet.h>
19#include <vlibmemory/api.h>
20
21#include <vnet/devices/pipe/pipe.h>
22#include <vnet/vnet_msg_enum.h>
23
24#define vl_typedefs		/* define message structures */
25#include <vnet/vnet_all_api_h.h>
26#undef vl_typedefs
27
28#define vl_endianfun		/* define message structures */
29#include <vnet/vnet_all_api_h.h>
30#undef vl_endianfun
31
32/* instantiate all the print functions we know about */
33#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
34#define vl_printfun
35#include <vnet/vnet_all_api_h.h>
36#undef vl_printfun
37
38#include <vlibapi/api_helper_macros.h>
39extern vpe_api_main_t vpe_api_main;
40
41#define foreach_vpe_api_msg                                     \
42  _(PIPE_CREATE, pipe_create)                                   \
43  _(PIPE_DELETE, pipe_delete)                                   \
44  _(PIPE_DUMP,   pipe_dump)
45
46static void
47vl_api_pipe_create_t_handler (vl_api_pipe_create_t * mp)
48{
49  vl_api_pipe_create_reply_t *rmp;
50  u32 parent_sw_if_index;
51  u32 pipe_sw_if_index[2];
52  int rv;
53  u8 is_specified = mp->is_specified;
54  u32 user_instance = ntohl (mp->user_instance);
55
56  rv = vnet_create_pipe_interface (is_specified, user_instance,
57				   &parent_sw_if_index, pipe_sw_if_index);
58
59  /* *INDENT-OFF* */
60  REPLY_MACRO2(VL_API_PIPE_CREATE_REPLY,
61  ({
62    rmp->sw_if_index = ntohl (parent_sw_if_index);
63    rmp->pipe_sw_if_index[0] = ntohl (pipe_sw_if_index[0]);
64    rmp->pipe_sw_if_index[1] = ntohl (pipe_sw_if_index[1]);
65  }));
66  /* *INDENT-ON* */
67}
68
69static void
70vl_api_pipe_delete_t_handler (vl_api_pipe_delete_t * mp)
71{
72  vl_api_pipe_delete_reply_t *rmp;
73  int rv;
74
75  rv = vnet_delete_pipe_interface (ntohl (mp->sw_if_index));
76
77  REPLY_MACRO (VL_API_PIPE_DELETE_REPLY);
78}
79
80typedef struct pipe_dump_walk_t_
81{
82  vl_api_registration_t *reg;
83  u32 context;
84} pipe_dump_walk_t;
85
86static walk_rc_t
87pipe_send_details (u32 parent_sw_if_index,
88		   u32 pipe_sw_if_index[2], u32 instance, void *args)
89{
90  pipe_dump_walk_t *ctx = args;
91  vl_api_pipe_details_t *mp;
92
93  mp = vl_msg_api_alloc (sizeof (*mp));
94  if (!mp)
95    return (WALK_STOP);
96
97  mp->_vl_msg_id = ntohs (VL_API_PIPE_DETAILS);
98  mp->context = ctx->context;
99
100  mp->instance = ntohl (instance);
101  mp->sw_if_index = ntohl (parent_sw_if_index);
102  mp->pipe_sw_if_index[0] = ntohl (pipe_sw_if_index[0]);
103  mp->pipe_sw_if_index[1] = ntohl (pipe_sw_if_index[1]);
104
105  vl_api_send_msg (ctx->reg, (u8 *) mp);
106
107  return (WALK_CONTINUE);
108}
109
110static void
111vl_api_pipe_dump_t_handler (vl_api_pipe_dump_t * mp)
112{
113  vl_api_registration_t *reg;
114
115  reg = vl_api_client_index_to_registration (mp->client_index);
116  if (!reg)
117    return;
118
119  pipe_dump_walk_t ctx = {
120    .reg = reg,
121    .context = mp->context,
122  };
123
124  pipe_walk (pipe_send_details, &ctx);
125}
126
127/*
128 * vpe_api_hookup
129 * Add vpe's API message handlers to the table.
130 * vlib has already mapped shared memory and
131 * added the client registration handlers.
132 * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
133 */
134#define vl_msg_name_crc_list
135#include <vnet/devices/pipe/pipe.api.h>
136#undef vl_msg_name_crc_list
137
138static void
139setup_message_id_table (api_main_t * am)
140{
141#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
142  foreach_vl_msg_name_crc_pipe;
143#undef _
144}
145
146static clib_error_t *
147pipe_api_hookup (vlib_main_t * vm)
148{
149  api_main_t *am = vlibapi_get_main ();
150
151#define _(N,n)                                                  \
152    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
153                           vl_api_##n##_t_handler,              \
154                           vl_noop_handler,                     \
155                           vl_api_##n##_t_endian,               \
156                           vl_api_##n##_t_print,                \
157                           sizeof(vl_api_##n##_t), 1);
158  foreach_vpe_api_msg;
159#undef _
160
161  /*
162   * Set up the (msg_name, crc, message-id) table
163   */
164  setup_message_id_table (am);
165
166  return 0;
167}
168
169VLIB_API_INIT_FUNCTION (pipe_api_hookup);
170
171/*
172 * fd.io coding-style-patch-verification: ON
173 *
174 * Local Variables:
175 * eval: (c-set-style "gnu")
176 * End:
177 */
178