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
|
/*
*------------------------------------------------------------------
* af_packet.c - linux kernel packet interface
*
* 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 <fcntl.h> /* for open */
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/uio.h> /* for iovec */
#include <netinet/in.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/devices/af_packet/af_packet.h>
/**
* @file
* @brief CLI for Host Interface Device Driver.
*
* This file contains the source code for CLI for the host interface.
*/
static clib_error_t *
af_packet_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;
u32 sw_if_index;
int r;
/* 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
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
unformat_free (line_input);
if (host_if_name == NULL)
return clib_error_return (0, "missing host interface name");
r = af_packet_create_if (vm, host_if_name, hw_addr_ptr, &sw_if_index);
vec_free (host_if_name);
if (r == VNET_API_ERROR_SYSCALL_ERROR_1)
return clib_error_return (0, "%s (errno %d)", strerror (errno), errno);
if (r == VNET_API_ERROR_INVALID_INTERFACE)
return clib_error_return (0, "Invalid interface name");
if (r == VNET_API_ERROR_SUBIF_ALREADY_EXISTS)
return clib_error_return (0, "Interface elready exists");
vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
sw_if_index);
return 0;
}
/*?
* Create a host interface that will attach to a linux AF_PACKET
* interface, one side of a veth pair. The veth pair must already
* exist. Once created, a new host interface will exist in VPP
* with the name '<em>host-<ifname></em>', where '<em><ifname></em>'
* is the name of the specified veth pair. Use the
* '<em>show interfaces</em>' command to display host interface details.
*
* @cliexpar
* Example of how to create a host interface tied to one side of an
* existing linux veth pair named vpp1:
* @cliexstart{create host-interface name vpp1}
* host-vpp1
* @cliexend
* Once the host interface is created, enable the interface using:
* @cliexcmd{set interface state host-vpp1 up}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (af_packet_create_command, static) = {
.path = "create host-interface",
.short_help = "create host-interface name <ifname> [hw-addr <mac-addr>]",
.function = af_packet_create_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
af_packet_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;
/* 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
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
unformat_free (line_input);
if (host_if_name == NULL)
return clib_error_return (0, "missing host interface name");
af_packet_delete_if (vm, host_if_name);
vec_free (host_if_name);
return 0;
}
/*?
* Delete a host interface. Use the linux interface name to identify
* the host interface to be deleted. In VPP, host interfaces are
* named as '<em>host-<ifname></em>', where '<em><ifname></em>'
* is the name of the linux interface.
*
* @cliexpar
* Example of how to delete a host interface named host-vpp1:
* @cliexcmd{delete host-interface name vpp1}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (af_packet_delete_command, static) = {
.path = "delete host-interface",
.short_help = "delete host-interface name <ifname>",
.function = af_packet_delete_command_fn,
};
/* *INDENT-ON* */
clib_error_t *
af_packet_cli_init (vlib_main_t * vm)
{
return 0;
}
VLIB_INIT_FUNCTION (af_packet_cli_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
