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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
|
/*
* lib/route/act/skbedit.c skbedit action
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2015 Cong Wang <xiyou.wangcong@gmail.com>
*/
/**
* @ingroup act
* @defgroup act_skbedit SKB Editing
*
* @{
*/
#include <netlink-private/netlink.h>
#include <netlink-private/tc.h>
#include <netlink/netlink.h>
#include <netlink/attr.h>
#include <netlink/utils.h>
#include <netlink-private/route/tc-api.h>
#include <netlink/route/act/skbedit.h>
static struct nla_policy skbedit_policy[TCA_SKBEDIT_MAX + 1] = {
[TCA_SKBEDIT_PARMS] = { .minlen = sizeof(struct tc_skbedit) },
[TCA_SKBEDIT_PRIORITY] = { .type = NLA_U32 },
[TCA_SKBEDIT_QUEUE_MAPPING] = { .type = NLA_U16 },
[TCA_SKBEDIT_MARK] = { .type = NLA_U32 },
};
static int skbedit_msg_parser(struct rtnl_tc *tc, void *data)
{
struct rtnl_skbedit *u = data;
struct nlattr *tb[TCA_SKBEDIT_MAX + 1];
int err;
err = tca_parse(tb, TCA_SKBEDIT_MAX, tc, skbedit_policy);
if (err < 0)
return err;
if (!tb[TCA_SKBEDIT_PARMS])
return -NLE_MISSING_ATTR;
u->s_flags = 0;
if (tb[TCA_SKBEDIT_PRIORITY] != NULL) {
u->s_flags |= SKBEDIT_F_PRIORITY;
u->s_prio = nla_get_u32(tb[TCA_SKBEDIT_PRIORITY]);
}
if (tb[TCA_SKBEDIT_QUEUE_MAPPING] != NULL) {
u->s_flags |= SKBEDIT_F_QUEUE_MAPPING;
u->s_queue_mapping = nla_get_u16(tb[TCA_SKBEDIT_QUEUE_MAPPING]);
}
if (tb[TCA_SKBEDIT_MARK] != NULL) {
u->s_flags |= SKBEDIT_F_MARK;
u->s_mark = nla_get_u32(tb[TCA_SKBEDIT_MARK]);
}
return 0;
}
static void skbedit_free_data(struct rtnl_tc *tc, void *data)
{
}
static int skbedit_clone(void *_dst, void *_src)
{
struct rtnl_skbedit *dst = _dst, *src = _src;
memcpy(dst, src, sizeof(*src));
return 0;
}
static void skbedit_dump_line(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_skbedit *u = data;
if (!u)
return;
if (u->s_flags & SKBEDIT_F_PRIORITY)
nl_dump(p, " priority %u", u->s_prio);
if (u->s_flags & SKBEDIT_F_MARK)
nl_dump(p, " mark %u", u->s_mark);
if (u->s_flags & SKBEDIT_F_QUEUE_MAPPING)
nl_dump(p, " queue_mapping %u", u->s_queue_mapping);
switch(u->s_parm.action){
case TC_ACT_UNSPEC:
nl_dump(p, " unspecified");
break;
case TC_ACT_PIPE:
nl_dump(p, " pipe");
break;
case TC_ACT_STOLEN:
nl_dump(p, " stolen");
break;
case TC_ACT_SHOT:
nl_dump(p, " shot");
break;
case TC_ACT_QUEUED:
nl_dump(p, " queued");
break;
case TC_ACT_REPEAT:
nl_dump(p, " repeat");
break;
}
}
static void skbedit_dump_details(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
}
static void skbedit_dump_stats(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_skbedit *u = data;
if (!u)
return;
/* TODO */
}
static int skbedit_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg)
{
struct rtnl_skbedit *u = data;
if (!u)
return 0;
NLA_PUT(msg, TCA_SKBEDIT_PARMS, sizeof(u->s_parm), &u->s_parm);
if (u->s_flags & SKBEDIT_F_MARK)
NLA_PUT_U32(msg, TCA_SKBEDIT_MARK, u->s_mark);
if (u->s_flags & SKBEDIT_F_PRIORITY)
NLA_PUT_U32(msg, TCA_SKBEDIT_PRIORITY, u->s_prio);
if (u->s_flags & SKBEDIT_F_QUEUE_MAPPING)
NLA_PUT_U32(msg, TCA_SKBEDIT_QUEUE_MAPPING, u->s_queue_mapping);
return 0;
nla_put_failure:
return -NLE_NOMEM;
}
/**
* @name Attribute Modifications
* @{
*/
int rtnl_skbedit_set_action(struct rtnl_act *act, int action)
{
struct rtnl_skbedit *u;
if (!(u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
if (action > TC_ACT_REPEAT || action < TC_ACT_UNSPEC)
return -NLE_INVAL;
u->s_parm.action = action;
return 0;
}
int rtnl_skbedit_get_action(struct rtnl_act *act)
{
struct rtnl_skbedit *u;
if (!(u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
return u->s_parm.action;
}
int rtnl_skbedit_set_queue_mapping(struct rtnl_act *act, uint16_t index)
{
struct rtnl_skbedit *u;
if (!(u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
u->s_queue_mapping = index;
u->s_flags |= SKBEDIT_F_QUEUE_MAPPING;
return 0;
}
int rtnl_skbedit_get_queue_mapping(struct rtnl_act *act, uint16_t *index)
{
struct rtnl_skbedit *u;
u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act));
if (!u)
return -NLE_NOMEM;
if (!(u->s_flags & SKBEDIT_F_QUEUE_MAPPING))
return -NLE_NOATTR;
*index = u->s_queue_mapping;
return 0;
}
int rtnl_skbedit_set_mark(struct rtnl_act *act, uint32_t mark)
{
struct rtnl_skbedit *u;
if (!(u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
u->s_mark = mark;
u->s_flags |= SKBEDIT_F_MARK;
return 0;
}
int rtnl_skbedit_get_mark(struct rtnl_act *act, uint32_t *mark)
{
struct rtnl_skbedit *u;
u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act));
if (!u)
return -NLE_NOMEM;
if (!(u->s_flags & SKBEDIT_F_MARK))
return -NLE_NOATTR;
*mark = u->s_mark;
return 0;
}
int rtnl_skbedit_set_priority(struct rtnl_act *act, uint32_t prio)
{
struct rtnl_skbedit *u;
if (!(u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
u->s_prio = prio;
u->s_flags |= SKBEDIT_F_PRIORITY;
return 0;
}
int rtnl_skbedit_get_priority(struct rtnl_act *act, uint32_t *prio)
{
struct rtnl_skbedit *u;
u = (struct rtnl_skbedit *) rtnl_tc_data(TC_CAST(act));
if (!u)
return -NLE_NOMEM;
if (!(u->s_flags & SKBEDIT_F_PRIORITY))
return -NLE_NOATTR;
*prio = u->s_prio;
return 0;
}
/** @} */
static struct rtnl_tc_ops skbedit_ops = {
.to_kind = "skbedit",
.to_type = RTNL_TC_TYPE_ACT,
.to_size = sizeof(struct rtnl_skbedit),
.to_msg_parser = skbedit_msg_parser,
.to_free_data = skbedit_free_data,
.to_clone = skbedit_clone,
.to_msg_fill = skbedit_msg_fill,
.to_dump = {
[NL_DUMP_LINE] = skbedit_dump_line,
[NL_DUMP_DETAILS] = skbedit_dump_details,
[NL_DUMP_STATS] = skbedit_dump_stats,
},
};
static void __init skbedit_init(void)
{
rtnl_tc_register(&skbedit_ops);
}
static void __exit skbedit_exit(void)
{
rtnl_tc_unregister(&skbedit_ops);
}
/** @} */
|
