FD.io VPP  v19.04.4-rc0-5-ge88582fac
Vector Packet Processing
pg_api.c
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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 
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 
49 extern void stats_dslock_with_hint (int hint, int tag);
50 extern void stats_dsunlock (void);
51 
52 static void
54 {
56  int rv = 0;
57 
58  pg_main_t *pg = &pg_main;
59  u32 pg_if_id = pg_interface_add_or_get (pg, ntohl (mp->interface_id));
60  pg_interface_t *pi = pool_elt_at_index (pg->interfaces, pg_if_id);
61 
62  /* *INDENT-OFF* */
63  REPLY_MACRO2(VL_API_PG_CREATE_INTERFACE_REPLY,
64  ({
65  rmp->sw_if_index = ntohl(pi->sw_if_index);
66  }));
67  /* *INDENT-ON* */
68 }
69 
70 static void
72 {
73  vl_api_pg_capture_reply_t *rmp;
74  int rv = 0;
75 
76  vnet_main_t *vnm = vnet_get_main ();
79 
80  u8 *intf_name = format (0, "pg%d", ntohl (mp->interface_id), 0);
81  vec_terminate_c_string (intf_name);
82  u32 hw_if_index = ~0;
83  uword *p = hash_get_mem (im->hw_interface_by_name, intf_name);
84  if (p)
85  hw_if_index = *p;
86  vec_free (intf_name);
87 
88  if (hw_if_index != ~0)
89  {
90  pg_capture_args_t _a, *a = &_a;
91 
92  u32 len = ntohl (mp->pcap_name_length);
93  u8 *pcap_file_name = vec_new (u8, len);
94  clib_memcpy (pcap_file_name, mp->pcap_file_name, len);
95 
96  hi = vnet_get_sup_hw_interface (vnm, hw_if_index);
97  a->hw_if_index = hw_if_index;
98  a->dev_instance = hi->dev_instance;
99  a->is_enabled = mp->is_enabled;
100  a->pcap_file_name = pcap_file_name;
101  a->count = ntohl (mp->count);
102 
103  clib_error_t *e = pg_capture (a);
104  if (e)
105  {
106  clib_error_report (e);
107  rv = VNET_API_ERROR_CANNOT_CREATE_PCAP_FILE;
108  }
109 
110  vec_free (pcap_file_name);
111  }
112  REPLY_MACRO (VL_API_PG_CAPTURE_REPLY);
113 }
114 
115 static void
117 {
118  vl_api_pg_enable_disable_reply_t *rmp;
119  int rv = 0;
120 
121  pg_main_t *pg = &pg_main;
122  u32 stream_index = ~0;
123 
124  int is_enable = mp->is_enabled != 0;
125  u32 len = ntohl (mp->stream_name_length) - 1;
126 
127  if (len > 0)
128  {
129  u8 *stream_name = vec_new (u8, len);
130  clib_memcpy (stream_name, mp->stream_name, len);
131  uword *p = hash_get_mem (pg->stream_index_by_name, stream_name);
132  if (p)
133  stream_index = *p;
134  vec_free (stream_name);
135  }
136 
137  pg_enable_disable (stream_index, is_enable);
138 
139  REPLY_MACRO (VL_API_PG_ENABLE_DISABLE_REPLY);
140 }
141 
142 #define vl_msg_name_crc_list
143 #include <vnet/pg/pg.api.h>
144 #undef vl_msg_name_crc_list
145 
146 static void
148 {
149 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
150  foreach_vl_msg_name_crc_pg;
151 #undef _
152 }
153 
154 static clib_error_t *
156 {
157  api_main_t *am = &api_main;
158 
159 #define _(N,n) \
160  vl_msg_api_set_handlers(VL_API_##N, #n, \
161  vl_api_##n##_t_handler, \
162  vl_noop_handler, \
163  vl_api_##n##_t_endian, \
164  vl_api_##n##_t_print, \
165  sizeof(vl_api_##n##_t), 1);
167 #undef _
168 
169  /*
170  * Set up the (msg_name, crc, message-id) table
171  */
173 
174  return 0;
175 }
176 
178 
179 /*
180  * fd.io coding-style-patch-verification: ON
181  *
182  * Local Variables:
183  * eval: (c-set-style "gnu")
184  * End:
185  */
u32 sw_if_index
Definition: pg.h:297
vmrglw vmrglh hi
#define foreach_pg_api_msg
Definition: pg_api.c:44
clib_error_t * pg_capture(pg_capture_args_t *a)
Definition: cli.c:81
a
Definition: bitmap.h:538
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: pg.h:313
vnet_interface_main_t interface_main
Definition: vnet.h:56
#define REPLY_MACRO2(t, body)
uword * stream_index_by_name
Definition: pg.h:322
#define vec_terminate_c_string(V)
(If necessary) NULL terminate a vector containing a c-string.
Definition: vec.h:1014
VLIB_API_INIT_FUNCTION(pg_api_hookup)
u32 hw_if_index
Definition: pg.h:373
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
Enable / disable packet generator request.
Definition: pg.api:71
static void vl_api_pg_enable_disable_t_handler(vl_api_pg_enable_disable_t *mp)
Definition: pg_api.c:116
unsigned char u8
Definition: types.h:56
#define clib_memcpy(d, s, n)
Definition: string.h:180
u8 pcap_file_name[pcap_name_length]
Definition: pg.api:62
PacketGenerator capture packets on given interface request.
Definition: pg.api:54
#define vec_new(T, N)
Create new vector of given type and length (unspecified alignment, no header).
Definition: vec.h:311
unsigned int u32
Definition: types.h:88
static clib_error_t * pg_api_hookup(vlib_main_t *vm)
Definition: pg_api.c:155
u8 * pcap_file_name
Definition: pg.h:376
uword * hw_interface_by_name
Definition: interface.h:804
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
u8 stream_name[stream_name_length]
Definition: pg.api:77
u32 pcap_name_length
Definition: pg.api:61
#define REPLY_MACRO(t)
u32 pg_interface_add_or_get(pg_main_t *pg, uword stream_index)
Definition: stream.c:182
u8 len
Definition: ip_types.api:49
API main structure, used by both vpp and binary API clients.
Definition: api_common.h:202
PacketGenerator create interface request.
Definition: pg.api:28
void stats_dslock_with_hint(int hint, int tag)
vlib_main_t * vm
Definition: buffer.c:312
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
static void setup_message_id_table(api_main_t *am)
Definition: pg_api.c:147
void pg_enable_disable(u32 stream_index, int is_enable)
Definition: cli.c:58
static void vl_api_pg_create_interface_t_handler(vl_api_pg_create_interface_t *mp)
Definition: pg_api.c:53
#define clib_error_report(e)
Definition: error.h:113
u32 interface_id
Definition: pg.api:58
u64 uword
Definition: types.h:112
PacketGenerator create interface response.
Definition: pg.api:39
static void vl_api_pg_capture_t_handler(vl_api_pg_capture_t *mp)
Definition: pg_api.c:71
u32 dev_instance
Definition: pg.h:374
#define hash_get_mem(h, key)
Definition: hash.h:269
pg_main_t pg_main
Definition: init.c:44
u8 is_enabled
Definition: pg.h:375
api_main_t api_main
Definition: api_shared.c:35
pg_interface_t * interfaces
Definition: pg.h:325
void stats_dsunlock(void)