1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
*------------------------------------------------------------------
* Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#include <stdint.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/devices/netmap/net_netmap.h>
#include <vnet/devices/netmap/netmap.h>
static clib_error_t *
netmap_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
u8 *host_if_name = NULL;
u8 hwaddr[6];
u8 *hw_addr_ptr = 0;
int r;
u8 is_pipe = 0;
u8 is_master = 0;
u32 sw_if_index = ~0;
clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "name %s", &host_if_name))
;
else
if (unformat
(line_input, "hw-addr %U", unformat_ethernet_address, hwaddr))
hw_addr_ptr = hwaddr;
else if (unformat (line_input, "pipe"))
is_pipe = 1;
else if (unformat (line_input, "master"))
is_master = 1;
else if (unformat (line_input, "slave"))
is_master = 0;
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, line_input);
goto done;
}
}
if (host_if_name == NULL)
{
error = clib_error_return (0, "missing host interface name");
goto done;
}
r =
netmap_create_if (vm, host_if_name, hw_addr_ptr, is_pipe, is_master,
&sw_if_index);
if (r == VNET_API_ERROR_SYSCALL_ERROR_1)
{
error = clib_error_return (0, "%s (errno %d)", strerror (errno), errno);
goto done;
}
if (r == VNET_API_ERROR_INVALID_INTERFACE)
{
error = clib_error_return (0, "Invalid interface name");
goto done;
}
if (r == VNET_API_ERROR_SUBIF_ALREADY_EXISTS)
{
error = clib_error_return (0, "Interface already exists");
goto done;
}
vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
sw_if_index);
done:
unformat_free (line_input);
return error;
}
/*?
* '<em>netmap</em>' is a framework for very fast packet I/O from userspace.
* '<em>VALE</em>' is an equally fast in-kernel software switch using the
* netmap API. '<em>netmap</em>' includes '<em>netmap pipes</em>', a shared
* memory packet transport channel. Together, they provide a high speed
* user-space interface that allows VPP to patch into a linux namespace, a
* linux container, or a physical NIC without the use of DPDK. Netmap/VALE
* generates the '<em>netmap.ko</em>' kernel module that needs to be loaded
* before netmap interfaces can be created.
* - https://github.com/luigirizzo/netmap - Netmap/VALE repo.
* - https://github.com/vpp-dev/netmap - VPP development package for Netmap/VALE,
* which is a snapshot of the Netmap/VALE repo with minor changes to work
* with containers and modified kernel drivers to work with NICs.
*
* Create a netmap interface that will attach to a linux interface.
* The interface must already exist. Once created, a new netmap interface
* will exist in VPP with the name '<em>netmap-<ifname></em>', where
* '<em><ifname></em>' takes one of two forms:
* - <b>ifname</b> - Linux interface to bind too.
* - <b>valeXXX:YYY</b> -
* - Where '<em>valeXXX</em>' is an arbitrary name for a VALE
* interface that must start with '<em>vale</em>' and is less
* than 16 characters.
* - Where '<em>YYY</em>' is an existing linux namespace.
*
* This command has the following optional parameters:
*
* - <b>hw-addr <mac-addr></b> - Optional ethernet address, can be in either
* X:X:X:X:X:X unix or X.X.X cisco format.
*
* - <b>pipe</b> - Optional flag to indicate that a '<em>netmap pipe</em>'
* instance should be created.
*
* - <b>master | slave</b> - Optional flag to indicate whether VPP should
* be the master or slave of the '<em>netmap pipe</em>'. Only considered
* if '<em>pipe</em>' is entered. Defaults to '<em>slave</em>' if not entered.
*
* @cliexpar
* Example of how to create a netmap interface tied to the linux
* namespace '<em>vpp1</em>':
* @cliexstart{create netmap name vale00:vpp1 hw-addr 02:FE:3F:34:15:9B pipe master}
* netmap-vale00:vpp1
* @cliexend
* Once the netmap interface is created, enable the interface using:
* @cliexcmd{set interface state netmap-vale00:vpp1 up}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (netmap_create_command, static) = {
.path = "create netmap",
.short_help = "create netmap name <ifname>|valeXXX:YYY "
"[hw-addr <mac-addr>] [pipe] [master|slave]",
.function = netmap_create_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
netmap_delete_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
u8 *host_if_name = NULL;
clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "name %s", &host_if_name))
;
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, line_input);
goto done;
}
}
if (host_if_name == NULL)
{
error = clib_error_return (0, "missing host interface name");
goto done;
}
netmap_delete_if (vm, host_if_name);
done:
unformat_free (line_input);
return error;
}
/*?
* Delete a netmap interface. Use the '<em><ifname></em>' to identify
* the netmap interface to be deleted. In VPP, netmap interfaces are
* named as '<em>netmap-<ifname></em>', where '<em><ifname></em>'
* takes one of two forms:
* - <b>ifname</b> - Linux interface to bind too.
* - <b>valeXXX:YYY</b> -
* - Where '<em>valeXXX</em>' is an arbitrary name for a VALE
* interface that must start with '<em>vale</em>' and is less
* than 16 characters.
* - Where '<em>YYY</em>' is an existing linux namespace.
*
* @cliexpar
* Example of how to delete a netmap interface named '<em>netmap-vale00:vpp1</em>':
* @cliexcmd{delete netmap name vale00:vpp1}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (netmap_delete_command, static) = {
.path = "delete netmap",
.short_help = "delete netmap name <ifname>|valeXXX:YYY",
.function = netmap_delete_command_fn,
};
/* *INDENT-ON* */
clib_error_t *
netmap_cli_init (vlib_main_t * vm)
{
return 0;
}
VLIB_INIT_FUNCTION (netmap_cli_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
