cli.c revision 0ba86cb1
1/*
2 *------------------------------------------------------------------
3 * Copyright (c) 2016 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#include <stdint.h>
18#include <net/if.h>
19#include <sys/ioctl.h>
20#include <inttypes.h>
21
22#include <vlib/vlib.h>
23#include <vlib/unix/unix.h>
24#include <vnet/ethernet/ethernet.h>
25#include <vnet/ip/ip4_packet.h>
26#include <vnet/ip/ip6_packet.h>
27#include <vnet/ip/format.h>
28#include <linux/virtio_net.h>
29#include <linux/vhost.h>
30#include <vnet/devices/virtio/virtio.h>
31#include <vnet/devices/tap/tap.h>
32
33static clib_error_t *
34tap_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
35		       vlib_cli_command_t * cmd)
36{
37  unformat_input_t _line_input, *line_input = &_line_input;
38  tap_create_if_args_t args = { 0 };
39  int ip_addr_set = 0;
40  u32 tmp;
41
42  args.id = ~0;
43  args.tap_flags = 0;
44  args.rv = -1;
45
46  /* Get a line of input. */
47  if (unformat_user (input, unformat_line_input, line_input))
48    {
49      while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
50	{
51	  if (unformat (line_input, "id %u", &args.id))
52	    ;
53	  else
54	    if (unformat (line_input, "host-if-name %s", &args.host_if_name))
55	    ;
56	  else if (unformat (line_input, "host-ns %s", &args.host_namespace))
57	    ;
58	  else if (unformat (line_input, "host-mac-addr %U",
59			     unformat_ethernet_address, args.host_mac_addr))
60	    ;
61	  else if (unformat (line_input, "host-bridge %s", &args.host_bridge))
62	    ;
63	  else if (unformat (line_input, "host-ip4-addr %U/%d",
64			     unformat_ip4_address, &args.host_ip4_addr,
65			     &args.host_ip4_prefix_len))
66	    ip_addr_set = 1;
67	  else if (unformat (line_input, "host-ip4-gw %U",
68			     unformat_ip4_address, &args.host_ip4_gw))
69	    args.host_ip4_gw_set = 1;
70	  else if (unformat (line_input, "host-ip6-addr %U/%d",
71			     unformat_ip6_address, &args.host_ip6_addr,
72			     &args.host_ip6_prefix_len))
73	    ip_addr_set = 1;
74	  else if (unformat (line_input, "host-ip6-gw %U",
75			     unformat_ip6_address, &args.host_ip6_gw))
76	    args.host_ip6_gw_set = 1;
77	  else if (unformat (line_input, "rx-ring-size %d", &tmp))
78	    args.rx_ring_sz = tmp;
79	  else if (unformat (line_input, "tx-ring-size %d", &tmp))
80	    args.tx_ring_sz = tmp;
81	  else
82	    if (unformat
83		(line_input, "host-mtu-size %d", &args.host_mtu_size))
84	    args.host_mtu_set = 1;
85	  else if (unformat (line_input, "no-gso"))
86	    args.tap_flags &= ~TAP_FLAG_GSO;
87	  else if (unformat (line_input, "gso"))
88	    args.tap_flags |= TAP_FLAG_GSO;
89	  else if (unformat (line_input, "hw-addr %U",
90			     unformat_ethernet_address, args.mac_addr))
91	    args.mac_addr_set = 1;
92	  else
93	    {
94	      unformat_free (line_input);
95	      return clib_error_return (0, "unknown input `%U'",
96					format_unformat_error, input);
97	    }
98	}
99      unformat_free (line_input);
100    }
101
102  if (ip_addr_set && args.host_bridge)
103    return clib_error_return (0, "Please specify either host ip address or "
104			      "host bridge");
105
106  tap_create_if (vm, &args);
107
108  if (!args.rv)
109    vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
110		     vnet_get_main (), args.sw_if_index);
111
112  vec_free (args.host_if_name);
113  vec_free (args.host_namespace);
114  vec_free (args.host_bridge);
115
116  return args.error;
117
118}
119
120/* *INDENT-OFF* */
121VLIB_CLI_COMMAND (tap_create_command, static) = {
122  .path = "create tap",
123  .short_help = "create tap {id <if-id>} [hw-addr <mac-address>] "
124    "[rx-ring-size <size>] [tx-ring-size <size>] [host-ns <netns>] "
125    "[host-bridge <bridge-name>] [host-ip4-addr <ip4addr/mask>] "
126    "[host-ip6-addr <ip6-addr>] [host-ip4-gw <ip4-addr>] "
127    "[host-ip6-gw <ip6-addr>] [host-mac-addr <host-mac-address>] "
128    "[host-if-name <name>] [host-mtu-size <size>] [no-gso|gso]",
129  .function = tap_create_command_fn,
130};
131/* *INDENT-ON* */
132
133static clib_error_t *
134tap_delete_command_fn (vlib_main_t * vm, unformat_input_t * input,
135		       vlib_cli_command_t * cmd)
136{
137  unformat_input_t _line_input, *line_input = &_line_input;
138  u32 sw_if_index = ~0;
139  vnet_main_t *vnm = vnet_get_main ();
140  int rv;
141
142  /* Get a line of input. */
143  if (!unformat_user (input, unformat_line_input, line_input))
144    return clib_error_return (0, "Missing <interface>");
145
146  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
147    {
148      if (unformat (line_input, "sw_if_index %d", &sw_if_index))
149	;
150      else if (unformat (line_input, "%U", unformat_vnet_sw_interface,
151			 vnm, &sw_if_index))
152	;
153      else
154	return clib_error_return (0, "unknown input `%U'",
155				  format_unformat_error, input);
156    }
157  unformat_free (line_input);
158
159  if (sw_if_index == ~0)
160    return clib_error_return (0,
161			      "please specify interface name or sw_if_index");
162
163  rv = tap_delete_if (vm, sw_if_index);
164  if (rv == VNET_API_ERROR_INVALID_SW_IF_INDEX)
165    return clib_error_return (0, "not a tap interface");
166  else if (rv != 0)
167    return clib_error_return (0, "error on deleting tap interface");
168
169  return 0;
170}
171
172/* *INDENT-OFF* */
173VLIB_CLI_COMMAND (tap_delete__command, static) =
174{
175  .path = "delete tap",
176  .short_help = "delete tap {<interface> | sw_if_index <sw_idx>}",
177  .function = tap_delete_command_fn,
178};
179/* *INDENT-ON* */
180
181static clib_error_t *
182tap_gso_command_fn (vlib_main_t * vm, unformat_input_t * input,
183		    vlib_cli_command_t * cmd)
184{
185  unformat_input_t _line_input, *line_input = &_line_input;
186  u32 sw_if_index = ~0;
187  vnet_main_t *vnm = vnet_get_main ();
188  int enable = 1;
189  int rv;
190
191  /* Get a line of input. */
192  if (!unformat_user (input, unformat_line_input, line_input))
193    return clib_error_return (0, "Missing <interface>");
194
195  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
196    {
197      if (unformat (line_input, "sw_if_index %d", &sw_if_index))
198	;
199      else if (unformat (line_input, "%U", unformat_vnet_sw_interface,
200			 vnm, &sw_if_index))
201	;
202      else if (unformat (line_input, "enable"))
203	enable = 1;
204      else if (unformat (line_input, "disable"))
205	enable = 0;
206      else
207	return clib_error_return (0, "unknown input `%U'",
208				  format_unformat_error, input);
209    }
210  unformat_free (line_input);
211
212  if (sw_if_index == ~0)
213    return clib_error_return (0,
214			      "please specify interface name or sw_if_index");
215
216  rv = tap_gso_enable_disable (vm, sw_if_index, enable);
217  if (rv == VNET_API_ERROR_INVALID_SW_IF_INDEX)
218    return clib_error_return (0, "not a tap interface");
219  else if (rv != 0)
220    return clib_error_return (0, "error on configuring GSO on tap interface");
221
222  return 0;
223}
224
225/* *INDENT-OFF* */
226VLIB_CLI_COMMAND (tap_gso__command, static) =
227{
228  .path = "set tap gso",
229  .short_help = "set tap gso {<interface> | sw_if_index <sw_idx>} <enable|disable>",
230  .function = tap_gso_command_fn,
231};
232/* *INDENT-ON* */
233
234static clib_error_t *
235tap_show_command_fn (vlib_main_t * vm, unformat_input_t * input,
236		     vlib_cli_command_t * cmd)
237{
238  virtio_main_t *mm = &virtio_main;
239  virtio_if_t *vif;
240  vnet_main_t *vnm = vnet_get_main ();
241  int show_descr = 0;
242  clib_error_t *error = 0;
243  u32 hw_if_index, *hw_if_indices = 0;
244
245  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
246    {
247      if (unformat
248	  (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
249	vec_add1 (hw_if_indices, hw_if_index);
250      else if (unformat (input, "descriptors"))
251	show_descr = 1;
252      else
253	{
254	  error = clib_error_return (0, "unknown input `%U'",
255				     format_unformat_error, input);
256	  goto done;
257	}
258    }
259
260  if (vec_len (hw_if_indices) == 0)
261    {
262      /* *INDENT-OFF* */
263      pool_foreach (vif, mm->interfaces,
264	  vec_add1 (hw_if_indices, vif->hw_if_index);
265      );
266      /* *INDENT-ON* */
267    }
268
269  virtio_show (vm, hw_if_indices, show_descr, VIRTIO_IF_TYPE_TAP);
270
271done:
272  vec_free (hw_if_indices);
273  return error;
274}
275
276/* *INDENT-OFF* */
277VLIB_CLI_COMMAND (tap_show_command, static) = {
278  .path = "show tap",
279  .short_help = "show tap {<interface>] [descriptors]",
280  .function = tap_show_command_fn,
281};
282/* *INDENT-ON* */
283
284clib_error_t *
285tap_cli_init (vlib_main_t * vm)
286{
287  return 0;
288}
289
290VLIB_INIT_FUNCTION (tap_cli_init);
291
292/*
293 * fd.io coding-style-patch-verification: ON
294 *
295 * Local Variables:
296 * eval: (c-set-style "gnu")
297 * End:
298 */
299