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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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 *------------------------------------------------------------------
19 #include <sys/ioctl.h>
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>
34 tap_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
35 vlib_cli_command_t * cmd)
37 unformat_input_t _line_input, *line_input = &_line_input;
38 tap_create_if_args_t args = { 0 };
41 /* Get a line of input. */
42 if (!unformat_user (input, unformat_line_input, line_input))
43 return clib_error_return (0, "Missing name <interface>");
45 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
47 if (unformat (line_input, "name %s", &args.name))
49 else if (unformat (line_input, "host-ns %s", &args.host_namespace))
51 else if (unformat (line_input, "host-bridge %s", &args.host_bridge))
53 else if (unformat (line_input, "host-ip4-addr %U/%d",
54 unformat_ip4_address, &args.host_ip4_addr,
55 &args.host_ip4_prefix_len))
57 else if (unformat (line_input, "host-ip6-addr %U/%d",
58 unformat_ip6_address, &args.host_ip6_addr,
59 &args.host_ip6_prefix_len))
61 else if (unformat (line_input, "rx-ring-size %d", &args.rx_ring_sz))
63 else if (unformat (line_input, "tx-ring-size %d", &args.tx_ring_sz))
65 else if (unformat (line_input, "hw-addr %U",
66 unformat_ethernet_address, args.hw_addr))
69 return clib_error_return (0, "unknown input `%U'",
70 format_unformat_error, input);
72 unformat_free (line_input);
74 if (ip_addr_set && args.host_bridge)
75 return clib_error_return (0, "Please specify either host ip address or "
78 tap_create_if (vm, &args);
81 vec_free (args.host_namespace);
82 vec_free (args.host_bridge);
89 VLIB_CLI_COMMAND (tap_create_command, static) = {
91 .short_help = "create tap {name <if-name>} [hw-addr <mac-address>] "
92 "[rx-ring-size <size>] [tx-ring-size <size>] [host-ns <netns>] "
93 "[host-bridge <bridge-name>] [host-ip4-addr <ip4addr/mask>] "
94 "[host-ip6-addr <ip6-addr]",
95 .function = tap_create_command_fn,
100 tap_delete_command_fn (vlib_main_t * vm, unformat_input_t * input,
101 vlib_cli_command_t * cmd)
103 unformat_input_t _line_input, *line_input = &_line_input;
104 u32 sw_if_index = ~0;
105 vnet_main_t *vnm = vnet_get_main ();
108 /* Get a line of input. */
109 if (!unformat_user (input, unformat_line_input, line_input))
110 return clib_error_return (0, "Missing <interface>");
112 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
114 if (unformat (line_input, "sw_if_index %d", &sw_if_index))
116 else if (unformat (line_input, "%U", unformat_vnet_sw_interface,
120 return clib_error_return (0, "unknown input `%U'",
121 format_unformat_error, input);
123 unformat_free (line_input);
125 if (sw_if_index == ~0)
126 return clib_error_return (0,
127 "please specify interface name or sw_if_index");
129 rv = tap_delete_if (vm, sw_if_index);
130 if (rv == VNET_API_ERROR_INVALID_SW_IF_INDEX)
131 return clib_error_return (0, "not a tap interface");
133 return clib_error_return (0, "error on deleting tap interface");
139 VLIB_CLI_COMMAND (tap_delete__command, static) =
141 .path = "delete tap",
142 .short_help = "delete tap {<interface> | sw_if_index <sw_idx>}",
143 .function = tap_delete_command_fn,
147 static clib_error_t *
148 tap_show_command_fn (vlib_main_t * vm, unformat_input_t * input,
149 vlib_cli_command_t * cmd)
151 virtio_main_t *mm = &virtio_main;
153 vnet_main_t *vnm = vnet_get_main ();
155 clib_error_t *error = 0;
156 u32 hw_if_index, *hw_if_indices = 0;
157 virtio_vring_t *vring;
164 struct feat_struct *feat_entry;
166 static struct feat_struct feat_array[] = {
167 #define _(s,b) { .str = #s, .bit = b, },
168 foreach_virtio_net_features
173 struct feat_struct *flag_entry;
174 static struct feat_struct flags_array[] = {
175 #define _(b,e,s) { .bit = b, .str = s, },
176 foreach_virtio_if_flag
181 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
184 (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
185 vec_add1 (hw_if_indices, hw_if_index);
186 else if (unformat (input, "descriptors"))
190 error = clib_error_return (0, "unknown input `%U'",
191 format_unformat_error, input);
196 if (vec_len (hw_if_indices) == 0)
199 pool_foreach (vif, mm->interfaces,
200 vec_add1 (hw_if_indices, vif->hw_if_index);
205 for (hw_if_index = 0; hw_if_index < vec_len (hw_if_indices); hw_if_index++)
207 vnet_hw_interface_t *hi =
208 vnet_get_hw_interface (vnm, hw_if_indices[hw_if_index]);
209 vif = pool_elt_at_index (mm->interfaces, hi->dev_instance);
210 vlib_cli_output (vm, "interface %U", format_vnet_sw_if_index_name,
211 vnm, vif->sw_if_index);
213 vlib_cli_output (vm, " name \"%s\"", vif->name);
215 vlib_cli_output (vm, " host-ns \"%s\"", vif->net_ns);
216 vlib_cli_output (vm, " flags 0x%x", vif->flags);
217 flag_entry = (struct feat_struct *) &flags_array;
218 while (flag_entry->str)
220 if (vif->flags & (1ULL << flag_entry->bit))
221 vlib_cli_output (vm, " %s (%d)", flag_entry->str,
225 vlib_cli_output (vm, " fd %d", vif->fd);
226 vlib_cli_output (vm, " tap-fd %d", vif->tap_fd);
227 vlib_cli_output (vm, " features 0x%lx", vif->features);
228 feat_entry = (struct feat_struct *) &feat_array;
229 while (feat_entry->str)
231 if (vif->features & (1ULL << feat_entry->bit))
232 vlib_cli_output (vm, " %s (%d)", feat_entry->str,
236 vlib_cli_output (vm, " remote-features 0x%lx", vif->remote_features);
237 feat_entry = (struct feat_struct *) &feat_array;
238 while (feat_entry->str)
240 if (vif->remote_features & (1ULL << feat_entry->bit))
241 vlib_cli_output (vm, " %s (%d)", feat_entry->str,
245 vec_foreach_index (i, vif->vrings)
248 vring = vec_elt_at_index (vif->vrings, i);
249 vlib_cli_output (vm, " Virtqueue (%s)", (i & 1) ? "TX" : "RX");
250 vlib_cli_output (vm, " qsz %d, last_used_idx %d, desc_in_use %d",
251 vring->size, vring->last_used_idx,
254 " avail.flags 0x%x avail.idx %d used.flags 0x%x used.idx %d",
255 vring->avail->flags, vring->avail->idx,
256 vring->used->flags, vring->used->idx);
257 vlib_cli_output (vm, " kickfd %d, callfd %d", vring->kick_fd,
261 vlib_cli_output (vm, "\n descriptor table:\n");
263 " id addr len flags next user_addr\n");
265 " ===== ================== ===== ====== ===== ==================\n");
267 for (j = 0; j < vring->size; j++)
269 struct vring_desc *desc = &vring->desc[j];
271 " %-5d 0x%016lx %-5d 0x%04x %-5d 0x%016lx\n",
274 desc->flags, desc->next, desc->addr);
280 vec_free (hw_if_indices);
285 VLIB_CLI_COMMAND (tap_show_command, static) = {
287 .short_help = "show tap {<interface>] [descriptors]",
288 .function = tap_show_command_fn,
293 tap_cli_init (vlib_main_t * vm)
298 VLIB_INIT_FUNCTION (tap_cli_init);
301 * fd.io coding-style-patch-verification: ON
304 * eval: (c-set-style "gnu")