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
|
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/kernel.h>
#include <linux/slab.h>
#include <net/flow_offload.h>
#include <net/pkt_cls.h>
struct flow_rule *flow_rule_alloc(unsigned int num_actions)
{
struct flow_rule *rule;
rule = kzalloc(struct_size(rule, action.entries, num_actions),
GFP_KERNEL);
if (!rule)
return NULL;
rule->action.num_entries = num_actions;
return rule;
}
EXPORT_SYMBOL(flow_rule_alloc);
#define FLOW_DISSECTOR_MATCH(__rule, __type, __out) \
const struct flow_match *__m = &(__rule)->match; \
struct flow_dissector *__d = (__m)->dissector; \
\
(__out)->key = skb_flow_dissector_target(__d, __type, (__m)->key); \
(__out)->mask = skb_flow_dissector_target(__d, __type, (__m)->mask); \
void flow_rule_match_meta(const struct flow_rule *rule,
struct flow_match_meta *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_META, out);
}
EXPORT_SYMBOL(flow_rule_match_meta);
void flow_rule_match_basic(const struct flow_rule *rule,
struct flow_match_basic *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_BASIC, out);
}
EXPORT_SYMBOL(flow_rule_match_basic);
void flow_rule_match_control(const struct flow_rule *rule,
struct flow_match_control *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_CONTROL, out);
}
EXPORT_SYMBOL(flow_rule_match_control);
void flow_rule_match_eth_addrs(const struct flow_rule *rule,
struct flow_match_eth_addrs *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS, out);
}
EXPORT_SYMBOL(flow_rule_match_eth_addrs);
void flow_rule_match_vlan(const struct flow_rule *rule,
struct flow_match_vlan *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_VLAN, out);
}
EXPORT_SYMBOL(flow_rule_match_vlan);
void flow_rule_match_cvlan(const struct flow_rule *rule,
struct flow_match_vlan *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_CVLAN, out);
}
EXPORT_SYMBOL(flow_rule_match_cvlan);
void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
struct flow_match_ipv4_addrs *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS, out);
}
EXPORT_SYMBOL(flow_rule_match_ipv4_addrs);
void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
struct flow_match_ipv6_addrs *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_IPV6_ADDRS, out);
}
EXPORT_SYMBOL(flow_rule_match_ipv6_addrs);
void flow_rule_match_ip(const struct flow_rule *rule,
struct flow_match_ip *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_IP, out);
}
EXPORT_SYMBOL(flow_rule_match_ip);
void flow_rule_match_ports(const struct flow_rule *rule,
struct flow_match_ports *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_PORTS, out);
}
EXPORT_SYMBOL(flow_rule_match_ports);
void flow_rule_match_tcp(const struct flow_rule *rule,
struct flow_match_tcp *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_TCP, out);
}
EXPORT_SYMBOL(flow_rule_match_tcp);
void flow_rule_match_icmp(const struct flow_rule *rule,
struct flow_match_icmp *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ICMP, out);
}
EXPORT_SYMBOL(flow_rule_match_icmp);
void flow_rule_match_mpls(const struct flow_rule *rule,
struct flow_match_mpls *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_MPLS, out);
}
EXPORT_SYMBOL(flow_rule_match_mpls);
void flow_rule_match_enc_control(const struct flow_rule *rule,
struct flow_match_control *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL, out);
}
EXPORT_SYMBOL(flow_rule_match_enc_control);
void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
struct flow_match_ipv4_addrs *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, out);
}
EXPORT_SYMBOL(flow_rule_match_enc_ipv4_addrs);
void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
struct flow_match_ipv6_addrs *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, out);
}
EXPORT_SYMBOL(flow_rule_match_enc_ipv6_addrs);
void flow_rule_match_enc_ip(const struct flow_rule *rule,
struct flow_match_ip *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_IP, out);
}
EXPORT_SYMBOL(flow_rule_match_enc_ip);
void flow_rule_match_enc_ports(const struct flow_rule *rule,
struct flow_match_ports *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_PORTS, out);
}
EXPORT_SYMBOL(flow_rule_match_enc_ports);
void flow_rule_match_enc_keyid(const struct flow_rule *rule,
struct flow_match_enc_keyid *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_KEYID, out);
}
EXPORT_SYMBOL(flow_rule_match_enc_keyid);
void flow_rule_match_enc_opts(const struct flow_rule *rule,
struct flow_match_enc_opts *out)
{
FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_OPTS, out);
}
EXPORT_SYMBOL(flow_rule_match_enc_opts);
struct flow_block_cb *flow_block_cb_alloc(struct net *net, tc_setup_cb_t *cb,
void *cb_ident, void *cb_priv,
void (*release)(void *cb_priv))
{
struct flow_block_cb *block_cb;
block_cb = kzalloc(sizeof(*block_cb), GFP_KERNEL);
if (!block_cb)
return ERR_PTR(-ENOMEM);
block_cb->net = net;
block_cb->cb = cb;
block_cb->cb_ident = cb_ident;
block_cb->cb_priv = cb_priv;
block_cb->release = release;
return block_cb;
}
EXPORT_SYMBOL(flow_block_cb_alloc);
void flow_block_cb_free(struct flow_block_cb *block_cb)
{
if (block_cb->release)
block_cb->release(block_cb->cb_priv);
kfree(block_cb);
}
EXPORT_SYMBOL(flow_block_cb_free);
struct flow_block_cb *flow_block_cb_lookup(struct flow_block_offload *f,
tc_setup_cb_t *cb, void *cb_ident)
{
struct flow_block_cb *block_cb;
list_for_each_entry(block_cb, f->driver_block_list, driver_list) {
if (block_cb->net == f->net &&
block_cb->cb == cb &&
block_cb->cb_ident == cb_ident)
return block_cb;
}
return NULL;
}
EXPORT_SYMBOL(flow_block_cb_lookup);
void *flow_block_cb_priv(struct flow_block_cb *block_cb)
{
return block_cb->cb_priv;
}
EXPORT_SYMBOL(flow_block_cb_priv);
void flow_block_cb_incref(struct flow_block_cb *block_cb)
{
block_cb->refcnt++;
}
EXPORT_SYMBOL(flow_block_cb_incref);
unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb)
{
return --block_cb->refcnt;
}
EXPORT_SYMBOL(flow_block_cb_decref);
int flow_block_cb_setup_simple(struct flow_block_offload *f,
struct list_head *driver_block_list,
tc_setup_cb_t *cb, void *cb_ident, void *cb_priv,
bool ingress_only)
{
if (ingress_only &&
f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
return -EOPNOTSUPP;
f->driver_block_list = driver_block_list;
switch (f->command) {
case FLOW_BLOCK_BIND:
return tcf_block_cb_register(f->block, cb, cb_ident, cb_priv,
f->extack);
case FLOW_BLOCK_UNBIND:
tcf_block_cb_unregister(f->block, cb, cb_ident);
return 0;
default:
return -EOPNOTSUPP;
}
}
EXPORT_SYMBOL(flow_block_cb_setup_simple);
|
