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
237
238
239
240
241
242
243
244
|
/*
* 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 <vnet/classify/policer_classify.h>
#include <vnet/l2/l2_input.h>
policer_classify_main_t policer_classify_main;
static void
vnet_policer_classify_feature_enable (vlib_main_t * vnm,
policer_classify_main_t * pcm,
u32 sw_if_index,
policer_classify_table_id_t tid,
int feature_enable)
{
if (tid == POLICER_CLASSIFY_TABLE_L2)
{
l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_POLICER_CLAS,
feature_enable);
}
else
{
vnet_feature_config_main_t *fcm;
u8 arc;
if (tid == POLICER_CLASSIFY_TABLE_IP4)
{
vnet_feature_enable_disable ("ip4-unicast", "ip4-policer-classify",
sw_if_index, feature_enable, 0, 0);
arc = vnet_get_feature_arc_index ("ip4-unicast");
}
else
{
vnet_feature_enable_disable ("ip6-unicast", "ip6-policer-classify",
sw_if_index, feature_enable, 0, 0);
arc = vnet_get_feature_arc_index ("ip6-unicast");
}
fcm = vnet_get_feature_arc_config_main (arc);
pcm->vnet_config_main[tid] = &fcm->config_main;
}
}
int
vnet_set_policer_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
u32 ip4_table_index, u32 ip6_table_index,
u32 l2_table_index, u32 is_add)
{
policer_classify_main_t *pcm = &policer_classify_main;
vnet_classify_main_t *vcm = pcm->vnet_classify_main;
u32 pct[POLICER_CLASSIFY_N_TABLES] = { ip4_table_index, ip6_table_index,
l2_table_index
};
u32 ti;
/* Assume that we've validated sw_if_index in the API layer */
for (ti = 0; ti < POLICER_CLASSIFY_N_TABLES; ti++)
{
if (pct[ti] == ~0)
continue;
if (pool_is_free_index (vcm->tables, pct[ti]))
return VNET_API_ERROR_NO_SUCH_TABLE;
vec_validate_init_empty
(pcm->classify_table_index_by_sw_if_index[ti], sw_if_index, ~0);
/* Reject any DEL operation with wrong sw_if_index */
if (!is_add &&
(pct[ti] !=
pcm->classify_table_index_by_sw_if_index[ti][sw_if_index]))
{
clib_warning
("Non-existent intf_idx=%d with table_index=%d for delete",
sw_if_index, pct[ti]);
return VNET_API_ERROR_NO_SUCH_TABLE;
}
/* Return ok on ADD operaton if feature is already enabled */
if (is_add &&
pcm->classify_table_index_by_sw_if_index[ti][sw_if_index] != ~0)
return 0;
vnet_policer_classify_feature_enable (vm, pcm, sw_if_index, ti, is_add);
if (is_add)
pcm->classify_table_index_by_sw_if_index[ti][sw_if_index] = pct[ti];
else
pcm->classify_table_index_by_sw_if_index[ti][sw_if_index] = ~0;
}
return 0;
}
static clib_error_t *
set_policer_classify_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
vnet_main_t *vnm = vnet_get_main ();
u32 sw_if_index = ~0;
u32 ip4_table_index = ~0;
u32 ip6_table_index = ~0;
u32 l2_table_index = ~0;
u32 is_add = 1;
u32 idx_cnt = 0;
int rv;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "interface %U", unformat_vnet_sw_interface,
vnm, &sw_if_index))
;
else if (unformat (input, "ip4-table %d", &ip4_table_index))
idx_cnt++;
else if (unformat (input, "ip6-table %d", &ip6_table_index))
idx_cnt++;
else if (unformat (input, "l2-table %d", &l2_table_index))
idx_cnt++;
else if (unformat (input, "del"))
is_add = 0;
else
break;
}
if (sw_if_index == ~0)
return clib_error_return (0, "Interface must be specified.");
if (!idx_cnt)
return clib_error_return (0, "Table index should be specified.");
if (idx_cnt > 1)
return clib_error_return (0, "Only one table index per API is allowed.");
rv = vnet_set_policer_classify_intfc (vm, sw_if_index, ip4_table_index,
ip6_table_index, l2_table_index,
is_add);
switch (rv)
{
case 0:
break;
case VNET_API_ERROR_NO_MATCHING_INTERFACE:
return clib_error_return (0, "No such interface");
case VNET_API_ERROR_NO_SUCH_ENTRY:
return clib_error_return (0, "No such classifier table");
}
return 0;
}
VLIB_CLI_COMMAND (set_policer_classify_command, static) = {
.path = "set policer classify",
.short_help =
"set policer classify interface <int> [ip4-table <index>]\n"
" [ip6-table <index>] [l2-table <index>] [del]",
.function = set_policer_classify_command_fn,
};
static uword
unformat_table_type (unformat_input_t * input, va_list * va)
{
u32 *r = va_arg (*va, u32 *);
u32 tid;
if (unformat (input, "ip4"))
tid = POLICER_CLASSIFY_TABLE_IP4;
else if (unformat (input, "ip6"))
tid = POLICER_CLASSIFY_TABLE_IP6;
else if (unformat (input, "l2"))
tid = POLICER_CLASSIFY_TABLE_L2;
else
return 0;
*r = tid;
return 1;
}
static clib_error_t *
show_policer_classify_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
policer_classify_main_t *pcm = &policer_classify_main;
u32 type = POLICER_CLASSIFY_N_TABLES;
u32 *vec_tbl;
int i;
if (unformat (input, "type %U", unformat_table_type, &type))
;
else
return clib_error_return (0, "Type must be specified.");;
if (type == POLICER_CLASSIFY_N_TABLES)
return clib_error_return (0, "Invalid table type.");
vec_tbl = pcm->classify_table_index_by_sw_if_index[type];
if (vec_len (vec_tbl))
vlib_cli_output (vm, "%10s%20s\t\t%s", "Intfc idx", "Classify table",
"Interface name");
else
vlib_cli_output (vm, "No tables configured.");
for (i = 0; i < vec_len (vec_tbl); i++)
{
if (vec_elt (vec_tbl, i) == ~0)
continue;
vlib_cli_output (vm, "%10d%20d\t\t%U", i, vec_elt (vec_tbl, i),
format_vnet_sw_if_index_name, pcm->vnet_main, i);
}
return 0;
}
VLIB_CLI_COMMAND (show_policer_classify_command, static) = {
.path = "show classify policer",
.short_help = "show classify policer type [ip4|ip6|l2]",
.function = show_policer_classify_command_fn,
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
