This source file includes following definitions.
- ingress_leaf
- ingress_find
- ingress_bind_filter
- ingress_unbind_filter
- ingress_walk
- ingress_tcf_block
- clsact_chain_head_change
- ingress_ingress_block_set
- ingress_ingress_block_get
- ingress_init
- ingress_destroy
- ingress_dump
- clsact_find
- clsact_bind_filter
- clsact_tcf_block
- clsact_ingress_block_set
- clsact_egress_block_set
- clsact_ingress_block_get
- clsact_egress_block_get
- clsact_init
- clsact_destroy
- ingress_module_init
- ingress_module_exit
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7 #include <linux/module.h>
8 #include <linux/types.h>
9 #include <linux/list.h>
10 #include <linux/skbuff.h>
11 #include <linux/rtnetlink.h>
12
13 #include <net/netlink.h>
14 #include <net/pkt_sched.h>
15 #include <net/pkt_cls.h>
16
17 struct ingress_sched_data {
18 struct tcf_block *block;
19 struct tcf_block_ext_info block_info;
20 struct mini_Qdisc_pair miniqp;
21 };
22
23 static struct Qdisc *ingress_leaf(struct Qdisc *sch, unsigned long arg)
24 {
25 return NULL;
26 }
27
28 static unsigned long ingress_find(struct Qdisc *sch, u32 classid)
29 {
30 return TC_H_MIN(classid) + 1;
31 }
32
33 static unsigned long ingress_bind_filter(struct Qdisc *sch,
34 unsigned long parent, u32 classid)
35 {
36 return ingress_find(sch, classid);
37 }
38
39 static void ingress_unbind_filter(struct Qdisc *sch, unsigned long cl)
40 {
41 }
42
43 static void ingress_walk(struct Qdisc *sch, struct qdisc_walker *walker)
44 {
45 }
46
47 static struct tcf_block *ingress_tcf_block(struct Qdisc *sch, unsigned long cl,
48 struct netlink_ext_ack *extack)
49 {
50 struct ingress_sched_data *q = qdisc_priv(sch);
51
52 return q->block;
53 }
54
55 static void clsact_chain_head_change(struct tcf_proto *tp_head, void *priv)
56 {
57 struct mini_Qdisc_pair *miniqp = priv;
58
59 mini_qdisc_pair_swap(miniqp, tp_head);
60 };
61
62 static void ingress_ingress_block_set(struct Qdisc *sch, u32 block_index)
63 {
64 struct ingress_sched_data *q = qdisc_priv(sch);
65
66 q->block_info.block_index = block_index;
67 }
68
69 static u32 ingress_ingress_block_get(struct Qdisc *sch)
70 {
71 struct ingress_sched_data *q = qdisc_priv(sch);
72
73 return q->block_info.block_index;
74 }
75
76 static int ingress_init(struct Qdisc *sch, struct nlattr *opt,
77 struct netlink_ext_ack *extack)
78 {
79 struct ingress_sched_data *q = qdisc_priv(sch);
80 struct net_device *dev = qdisc_dev(sch);
81
82 net_inc_ingress_queue();
83
84 mini_qdisc_pair_init(&q->miniqp, sch, &dev->miniq_ingress);
85
86 q->block_info.binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS;
87 q->block_info.chain_head_change = clsact_chain_head_change;
88 q->block_info.chain_head_change_priv = &q->miniqp;
89
90 return tcf_block_get_ext(&q->block, sch, &q->block_info, extack);
91 }
92
93 static void ingress_destroy(struct Qdisc *sch)
94 {
95 struct ingress_sched_data *q = qdisc_priv(sch);
96
97 tcf_block_put_ext(q->block, sch, &q->block_info);
98 net_dec_ingress_queue();
99 }
100
101 static int ingress_dump(struct Qdisc *sch, struct sk_buff *skb)
102 {
103 struct nlattr *nest;
104
105 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
106 if (nest == NULL)
107 goto nla_put_failure;
108
109 return nla_nest_end(skb, nest);
110
111 nla_put_failure:
112 nla_nest_cancel(skb, nest);
113 return -1;
114 }
115
116 static const struct Qdisc_class_ops ingress_class_ops = {
117 .flags = QDISC_CLASS_OPS_DOIT_UNLOCKED,
118 .leaf = ingress_leaf,
119 .find = ingress_find,
120 .walk = ingress_walk,
121 .tcf_block = ingress_tcf_block,
122 .bind_tcf = ingress_bind_filter,
123 .unbind_tcf = ingress_unbind_filter,
124 };
125
126 static struct Qdisc_ops ingress_qdisc_ops __read_mostly = {
127 .cl_ops = &ingress_class_ops,
128 .id = "ingress",
129 .priv_size = sizeof(struct ingress_sched_data),
130 .static_flags = TCQ_F_CPUSTATS,
131 .init = ingress_init,
132 .destroy = ingress_destroy,
133 .dump = ingress_dump,
134 .ingress_block_set = ingress_ingress_block_set,
135 .ingress_block_get = ingress_ingress_block_get,
136 .owner = THIS_MODULE,
137 };
138
139 struct clsact_sched_data {
140 struct tcf_block *ingress_block;
141 struct tcf_block *egress_block;
142 struct tcf_block_ext_info ingress_block_info;
143 struct tcf_block_ext_info egress_block_info;
144 struct mini_Qdisc_pair miniqp_ingress;
145 struct mini_Qdisc_pair miniqp_egress;
146 };
147
148 static unsigned long clsact_find(struct Qdisc *sch, u32 classid)
149 {
150 switch (TC_H_MIN(classid)) {
151 case TC_H_MIN(TC_H_MIN_INGRESS):
152 case TC_H_MIN(TC_H_MIN_EGRESS):
153 return TC_H_MIN(classid);
154 default:
155 return 0;
156 }
157 }
158
159 static unsigned long clsact_bind_filter(struct Qdisc *sch,
160 unsigned long parent, u32 classid)
161 {
162 return clsact_find(sch, classid);
163 }
164
165 static struct tcf_block *clsact_tcf_block(struct Qdisc *sch, unsigned long cl,
166 struct netlink_ext_ack *extack)
167 {
168 struct clsact_sched_data *q = qdisc_priv(sch);
169
170 switch (cl) {
171 case TC_H_MIN(TC_H_MIN_INGRESS):
172 return q->ingress_block;
173 case TC_H_MIN(TC_H_MIN_EGRESS):
174 return q->egress_block;
175 default:
176 return NULL;
177 }
178 }
179
180 static void clsact_ingress_block_set(struct Qdisc *sch, u32 block_index)
181 {
182 struct clsact_sched_data *q = qdisc_priv(sch);
183
184 q->ingress_block_info.block_index = block_index;
185 }
186
187 static void clsact_egress_block_set(struct Qdisc *sch, u32 block_index)
188 {
189 struct clsact_sched_data *q = qdisc_priv(sch);
190
191 q->egress_block_info.block_index = block_index;
192 }
193
194 static u32 clsact_ingress_block_get(struct Qdisc *sch)
195 {
196 struct clsact_sched_data *q = qdisc_priv(sch);
197
198 return q->ingress_block_info.block_index;
199 }
200
201 static u32 clsact_egress_block_get(struct Qdisc *sch)
202 {
203 struct clsact_sched_data *q = qdisc_priv(sch);
204
205 return q->egress_block_info.block_index;
206 }
207
208 static int clsact_init(struct Qdisc *sch, struct nlattr *opt,
209 struct netlink_ext_ack *extack)
210 {
211 struct clsact_sched_data *q = qdisc_priv(sch);
212 struct net_device *dev = qdisc_dev(sch);
213 int err;
214
215 net_inc_ingress_queue();
216 net_inc_egress_queue();
217
218 mini_qdisc_pair_init(&q->miniqp_ingress, sch, &dev->miniq_ingress);
219
220 q->ingress_block_info.binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS;
221 q->ingress_block_info.chain_head_change = clsact_chain_head_change;
222 q->ingress_block_info.chain_head_change_priv = &q->miniqp_ingress;
223
224 err = tcf_block_get_ext(&q->ingress_block, sch, &q->ingress_block_info,
225 extack);
226 if (err)
227 return err;
228
229 mini_qdisc_pair_init(&q->miniqp_egress, sch, &dev->miniq_egress);
230
231 q->egress_block_info.binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS;
232 q->egress_block_info.chain_head_change = clsact_chain_head_change;
233 q->egress_block_info.chain_head_change_priv = &q->miniqp_egress;
234
235 return tcf_block_get_ext(&q->egress_block, sch, &q->egress_block_info, extack);
236 }
237
238 static void clsact_destroy(struct Qdisc *sch)
239 {
240 struct clsact_sched_data *q = qdisc_priv(sch);
241
242 tcf_block_put_ext(q->egress_block, sch, &q->egress_block_info);
243 tcf_block_put_ext(q->ingress_block, sch, &q->ingress_block_info);
244
245 net_dec_ingress_queue();
246 net_dec_egress_queue();
247 }
248
249 static const struct Qdisc_class_ops clsact_class_ops = {
250 .flags = QDISC_CLASS_OPS_DOIT_UNLOCKED,
251 .leaf = ingress_leaf,
252 .find = clsact_find,
253 .walk = ingress_walk,
254 .tcf_block = clsact_tcf_block,
255 .bind_tcf = clsact_bind_filter,
256 .unbind_tcf = ingress_unbind_filter,
257 };
258
259 static struct Qdisc_ops clsact_qdisc_ops __read_mostly = {
260 .cl_ops = &clsact_class_ops,
261 .id = "clsact",
262 .priv_size = sizeof(struct clsact_sched_data),
263 .static_flags = TCQ_F_CPUSTATS,
264 .init = clsact_init,
265 .destroy = clsact_destroy,
266 .dump = ingress_dump,
267 .ingress_block_set = clsact_ingress_block_set,
268 .egress_block_set = clsact_egress_block_set,
269 .ingress_block_get = clsact_ingress_block_get,
270 .egress_block_get = clsact_egress_block_get,
271 .owner = THIS_MODULE,
272 };
273
274 static int __init ingress_module_init(void)
275 {
276 int ret;
277
278 ret = register_qdisc(&ingress_qdisc_ops);
279 if (!ret) {
280 ret = register_qdisc(&clsact_qdisc_ops);
281 if (ret)
282 unregister_qdisc(&ingress_qdisc_ops);
283 }
284
285 return ret;
286 }
287
288 static void __exit ingress_module_exit(void)
289 {
290 unregister_qdisc(&ingress_qdisc_ops);
291 unregister_qdisc(&clsact_qdisc_ops);
292 }
293
294 module_init(ingress_module_init);
295 module_exit(ingress_module_exit);
296
297 MODULE_ALIAS("sch_clsact");
298 MODULE_LICENSE("GPL");