1/*
2 *------------------------------------------------------------------
3 * pg_api.c - vnet pg api
4 *
5 * Copyright (c) 2016 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
18 */
19
20#include <vnet/vnet.h>
21#include <vlibmemory/api.h>
22
23#include <vnet/pg/pg.h>
24
25#include <vnet/vnet_msg_enum.h>
26
27#define vl_typedefs		/* define message structures */
28#include <vnet/vnet_all_api_h.h>
29#undef vl_typedefs
30
31#define vl_endianfun		/* define message structures */
32#include <vnet/vnet_all_api_h.h>
33#undef vl_endianfun
34
35/* instantiate all the print functions we know about */
36#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
37#define vl_printfun
38#include <vnet/vnet_all_api_h.h>
39#undef vl_printfun
40
41#include <vlibapi/api_helper_macros.h>
42
43
44#define foreach_pg_api_msg                                              \
45_(PG_CREATE_INTERFACE, pg_create_interface)                             \
46_(PG_CAPTURE, pg_capture)                                               \
47_(PG_ENABLE_DISABLE, pg_enable_disable)
48
49static void
50vl_api_pg_create_interface_t_handler (vl_api_pg_create_interface_t * mp)
51{
52  vl_api_pg_create_interface_reply_t *rmp;
53  int rv = 0;
54
55  pg_main_t *pg = &pg_main;
56  u32 pg_if_id = pg_interface_add_or_get (pg, ntohl (mp->interface_id),
57					  mp->gso_enabled,
58					  ntohl (mp->gso_size));
59  pg_interface_t *pi = pool_elt_at_index (pg->interfaces, pg_if_id);
60
61  /* *INDENT-OFF* */
62  REPLY_MACRO2(VL_API_PG_CREATE_INTERFACE_REPLY,
63  ({
64    rmp->sw_if_index = ntohl(pi->sw_if_index);
65  }));
66  /* *INDENT-ON* */
67}
68
69static void
70vl_api_pg_capture_t_handler (vl_api_pg_capture_t * mp)
71{
72  vl_api_pg_capture_reply_t *rmp;
73  int rv = 0;
74
75  vnet_main_t *vnm = vnet_get_main ();
76  vnet_interface_main_t *im = &vnm->interface_main;
77  vnet_hw_interface_t *hi = 0;
78
79  u8 *intf_name = format (0, "pg%d", ntohl (mp->interface_id), 0);
80  vec_terminate_c_string (intf_name);
81  u32 hw_if_index = ~0;
82  uword *p = hash_get_mem (im->hw_interface_by_name, intf_name);
83  if (p)
84    hw_if_index = *p;
85  vec_free (intf_name);
86
87  if (hw_if_index != ~0)
88    {
89      pg_capture_args_t _a, *a = &_a;
90      char *pcap_file_name =
91	vl_api_from_api_to_new_c_string (&mp->pcap_file_name);
92
93      hi = vnet_get_sup_hw_interface (vnm, hw_if_index);
94      a->hw_if_index = hw_if_index;
95      a->dev_instance = hi->dev_instance;
96      a->is_enabled = mp->is_enabled;
97      a->pcap_file_name = pcap_file_name;
98      a->count = ntohl (mp->count);
99
100      clib_error_t *e = pg_capture (a);
101      if (e)
102	{
103	  clib_error_report (e);
104	  rv = VNET_API_ERROR_CANNOT_CREATE_PCAP_FILE;
105	}
106
107      vec_free (pcap_file_name);
108    }
109  REPLY_MACRO (VL_API_PG_CAPTURE_REPLY);
110}
111
112static void
113vl_api_pg_enable_disable_t_handler (vl_api_pg_enable_disable_t * mp)
114{
115  vl_api_pg_enable_disable_reply_t *rmp;
116  int rv = 0;
117
118  pg_main_t *pg = &pg_main;
119  u32 stream_index = ~0;
120
121  int is_enable = mp->is_enabled != 0;
122
123  if (vl_api_string_len (&mp->stream_name) > 0)
124    {
125      u8 *stream_name = vl_api_from_api_to_new_vec (mp, &mp->stream_name);
126      uword *p = hash_get_mem (pg->stream_index_by_name, stream_name);
127      if (p)
128	stream_index = *p;
129      vec_free (stream_name);
130    }
131
132  pg_enable_disable (stream_index, is_enable);
133
134  REPLY_MACRO (VL_API_PG_ENABLE_DISABLE_REPLY);
135}
136
137#define vl_msg_name_crc_list
138#include <vnet/pg/pg.api.h>
139#undef vl_msg_name_crc_list
140
141static void
142setup_message_id_table (api_main_t * am)
143{
144#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
145  foreach_vl_msg_name_crc_pg;
146#undef _
147}
148
149static clib_error_t *
150pg_api_hookup (vlib_main_t * vm)
151{
152  api_main_t *am = vlibapi_get_main ();
153
154#define _(N,n)                                                  \
155    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
156                           vl_api_##n##_t_handler,              \
157                           vl_noop_handler,                     \
158                           vl_api_##n##_t_endian,               \
159                           vl_api_##n##_t_print,                \
160                           sizeof(vl_api_##n##_t), 1);
161  foreach_pg_api_msg;
162#undef _
163
164  /*
165   * Set up the (msg_name, crc, message-id) table
166   */
167  setup_message_id_table (am);
168
169  return 0;
170}
171
172VLIB_API_INIT_FUNCTION (pg_api_hookup);
173
174/*
175 * fd.io coding-style-patch-verification: ON
176 *
177 * Local Variables:
178 * eval: (c-set-style "gnu")
179 * End:
180 */
181