This source file includes following definitions.
- mtype_gc_init
- mtype_ext_cleanup
- mtype_destroy
- mtype_flush
- mtype_memsize
- mtype_head
- mtype_test
- mtype_add
- mtype_del
- mtype_is_filled
- mtype_list
- mtype_gc
1
2
3
4 #ifndef __IP_SET_BITMAP_IP_GEN_H
5 #define __IP_SET_BITMAP_IP_GEN_H
6
7 #define mtype_do_test IPSET_TOKEN(MTYPE, _do_test)
8 #define mtype_gc_test IPSET_TOKEN(MTYPE, _gc_test)
9 #define mtype_is_filled IPSET_TOKEN(MTYPE, _is_filled)
10 #define mtype_do_add IPSET_TOKEN(MTYPE, _do_add)
11 #define mtype_ext_cleanup IPSET_TOKEN(MTYPE, _ext_cleanup)
12 #define mtype_do_del IPSET_TOKEN(MTYPE, _do_del)
13 #define mtype_do_list IPSET_TOKEN(MTYPE, _do_list)
14 #define mtype_do_head IPSET_TOKEN(MTYPE, _do_head)
15 #define mtype_adt_elem IPSET_TOKEN(MTYPE, _adt_elem)
16 #define mtype_add_timeout IPSET_TOKEN(MTYPE, _add_timeout)
17 #define mtype_gc_init IPSET_TOKEN(MTYPE, _gc_init)
18 #define mtype_kadt IPSET_TOKEN(MTYPE, _kadt)
19 #define mtype_uadt IPSET_TOKEN(MTYPE, _uadt)
20 #define mtype_destroy IPSET_TOKEN(MTYPE, _destroy)
21 #define mtype_memsize IPSET_TOKEN(MTYPE, _memsize)
22 #define mtype_flush IPSET_TOKEN(MTYPE, _flush)
23 #define mtype_head IPSET_TOKEN(MTYPE, _head)
24 #define mtype_same_set IPSET_TOKEN(MTYPE, _same_set)
25 #define mtype_elem IPSET_TOKEN(MTYPE, _elem)
26 #define mtype_test IPSET_TOKEN(MTYPE, _test)
27 #define mtype_add IPSET_TOKEN(MTYPE, _add)
28 #define mtype_del IPSET_TOKEN(MTYPE, _del)
29 #define mtype_list IPSET_TOKEN(MTYPE, _list)
30 #define mtype_gc IPSET_TOKEN(MTYPE, _gc)
31 #define mtype MTYPE
32
33 #define get_ext(set, map, id) ((map)->extensions + ((set)->dsize * (id)))
34
35 static void
36 mtype_gc_init(struct ip_set *set, void (*gc)(struct timer_list *t))
37 {
38 struct mtype *map = set->data;
39
40 timer_setup(&map->gc, gc, 0);
41 mod_timer(&map->gc, jiffies + IPSET_GC_PERIOD(set->timeout) * HZ);
42 }
43
44 static void
45 mtype_ext_cleanup(struct ip_set *set)
46 {
47 struct mtype *map = set->data;
48 u32 id;
49
50 for (id = 0; id < map->elements; id++)
51 if (test_bit(id, map->members))
52 ip_set_ext_destroy(set, get_ext(set, map, id));
53 }
54
55 static void
56 mtype_destroy(struct ip_set *set)
57 {
58 struct mtype *map = set->data;
59
60 if (SET_WITH_TIMEOUT(set))
61 del_timer_sync(&map->gc);
62
63 if (set->dsize && set->extensions & IPSET_EXT_DESTROY)
64 mtype_ext_cleanup(set);
65 ip_set_free(map->members);
66 ip_set_free(map);
67
68 set->data = NULL;
69 }
70
71 static void
72 mtype_flush(struct ip_set *set)
73 {
74 struct mtype *map = set->data;
75
76 if (set->extensions & IPSET_EXT_DESTROY)
77 mtype_ext_cleanup(set);
78 bitmap_zero(map->members, map->elements);
79 set->elements = 0;
80 set->ext_size = 0;
81 }
82
83
84 static size_t
85 mtype_memsize(const struct mtype *map, size_t dsize)
86 {
87 return sizeof(*map) + map->memsize +
88 map->elements * dsize;
89 }
90
91 static int
92 mtype_head(struct ip_set *set, struct sk_buff *skb)
93 {
94 const struct mtype *map = set->data;
95 struct nlattr *nested;
96 size_t memsize = mtype_memsize(map, set->dsize) + set->ext_size;
97
98 nested = nla_nest_start(skb, IPSET_ATTR_DATA);
99 if (!nested)
100 goto nla_put_failure;
101 if (mtype_do_head(skb, map) ||
102 nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref)) ||
103 nla_put_net32(skb, IPSET_ATTR_MEMSIZE, htonl(memsize)) ||
104 nla_put_net32(skb, IPSET_ATTR_ELEMENTS, htonl(set->elements)))
105 goto nla_put_failure;
106 if (unlikely(ip_set_put_flags(skb, set)))
107 goto nla_put_failure;
108 nla_nest_end(skb, nested);
109
110 return 0;
111 nla_put_failure:
112 return -EMSGSIZE;
113 }
114
115 static int
116 mtype_test(struct ip_set *set, void *value, const struct ip_set_ext *ext,
117 struct ip_set_ext *mext, u32 flags)
118 {
119 struct mtype *map = set->data;
120 const struct mtype_adt_elem *e = value;
121 void *x = get_ext(set, map, e->id);
122 int ret = mtype_do_test(e, map, set->dsize);
123
124 if (ret <= 0)
125 return ret;
126 return ip_set_match_extensions(set, ext, mext, flags, x);
127 }
128
129 static int
130 mtype_add(struct ip_set *set, void *value, const struct ip_set_ext *ext,
131 struct ip_set_ext *mext, u32 flags)
132 {
133 struct mtype *map = set->data;
134 const struct mtype_adt_elem *e = value;
135 void *x = get_ext(set, map, e->id);
136 int ret = mtype_do_add(e, map, flags, set->dsize);
137
138 if (ret == IPSET_ADD_FAILED) {
139 if (SET_WITH_TIMEOUT(set) &&
140 ip_set_timeout_expired(ext_timeout(x, set))) {
141 set->elements--;
142 ret = 0;
143 } else if (!(flags & IPSET_FLAG_EXIST)) {
144 set_bit(e->id, map->members);
145 return -IPSET_ERR_EXIST;
146 }
147
148 ip_set_ext_destroy(set, x);
149 }
150 if (ret > 0)
151 set->elements--;
152
153 if (SET_WITH_TIMEOUT(set))
154 #ifdef IP_SET_BITMAP_STORED_TIMEOUT
155 mtype_add_timeout(ext_timeout(x, set), e, ext, set, map, ret);
156 #else
157 ip_set_timeout_set(ext_timeout(x, set), ext->timeout);
158 #endif
159
160 if (SET_WITH_COUNTER(set))
161 ip_set_init_counter(ext_counter(x, set), ext);
162 if (SET_WITH_COMMENT(set))
163 ip_set_init_comment(set, ext_comment(x, set), ext);
164 if (SET_WITH_SKBINFO(set))
165 ip_set_init_skbinfo(ext_skbinfo(x, set), ext);
166
167
168 set_bit(e->id, map->members);
169 set->elements++;
170
171 return 0;
172 }
173
174 static int
175 mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
176 struct ip_set_ext *mext, u32 flags)
177 {
178 struct mtype *map = set->data;
179 const struct mtype_adt_elem *e = value;
180 void *x = get_ext(set, map, e->id);
181
182 if (mtype_do_del(e, map))
183 return -IPSET_ERR_EXIST;
184
185 ip_set_ext_destroy(set, x);
186 set->elements--;
187 if (SET_WITH_TIMEOUT(set) &&
188 ip_set_timeout_expired(ext_timeout(x, set)))
189 return -IPSET_ERR_EXIST;
190
191 return 0;
192 }
193
194 #ifndef IP_SET_BITMAP_STORED_TIMEOUT
195 static inline bool
196 mtype_is_filled(const struct mtype_elem *x)
197 {
198 return true;
199 }
200 #endif
201
202 static int
203 mtype_list(const struct ip_set *set,
204 struct sk_buff *skb, struct netlink_callback *cb)
205 {
206 struct mtype *map = set->data;
207 struct nlattr *adt, *nested;
208 void *x;
209 u32 id, first = cb->args[IPSET_CB_ARG0];
210 int ret = 0;
211
212 adt = nla_nest_start(skb, IPSET_ATTR_ADT);
213 if (!adt)
214 return -EMSGSIZE;
215
216 rcu_read_lock();
217 for (; cb->args[IPSET_CB_ARG0] < map->elements;
218 cb->args[IPSET_CB_ARG0]++) {
219 cond_resched_rcu();
220 id = cb->args[IPSET_CB_ARG0];
221 x = get_ext(set, map, id);
222 if (!test_bit(id, map->members) ||
223 (SET_WITH_TIMEOUT(set) &&
224 #ifdef IP_SET_BITMAP_STORED_TIMEOUT
225 mtype_is_filled(x) &&
226 #endif
227 ip_set_timeout_expired(ext_timeout(x, set))))
228 continue;
229 nested = nla_nest_start(skb, IPSET_ATTR_DATA);
230 if (!nested) {
231 if (id == first) {
232 nla_nest_cancel(skb, adt);
233 ret = -EMSGSIZE;
234 goto out;
235 }
236
237 goto nla_put_failure;
238 }
239 if (mtype_do_list(skb, map, id, set->dsize))
240 goto nla_put_failure;
241 if (ip_set_put_extensions(skb, set, x, mtype_is_filled(x)))
242 goto nla_put_failure;
243 nla_nest_end(skb, nested);
244 }
245 nla_nest_end(skb, adt);
246
247
248 cb->args[IPSET_CB_ARG0] = 0;
249
250 goto out;
251
252 nla_put_failure:
253 nla_nest_cancel(skb, nested);
254 if (unlikely(id == first)) {
255 cb->args[IPSET_CB_ARG0] = 0;
256 ret = -EMSGSIZE;
257 }
258 nla_nest_end(skb, adt);
259 out:
260 rcu_read_unlock();
261 return ret;
262 }
263
264 static void
265 mtype_gc(struct timer_list *t)
266 {
267 struct mtype *map = from_timer(map, t, gc);
268 struct ip_set *set = map->set;
269 void *x;
270 u32 id;
271
272
273
274
275 spin_lock_bh(&set->lock);
276 for (id = 0; id < map->elements; id++)
277 if (mtype_gc_test(id, map, set->dsize)) {
278 x = get_ext(set, map, id);
279 if (ip_set_timeout_expired(ext_timeout(x, set))) {
280 clear_bit(id, map->members);
281 ip_set_ext_destroy(set, x);
282 set->elements--;
283 }
284 }
285 spin_unlock_bh(&set->lock);
286
287 map->gc.expires = jiffies + IPSET_GC_PERIOD(set->timeout) * HZ;
288 add_timer(&map->gc);
289 }
290
291 static const struct ip_set_type_variant mtype = {
292 .kadt = mtype_kadt,
293 .uadt = mtype_uadt,
294 .adt = {
295 [IPSET_ADD] = mtype_add,
296 [IPSET_DEL] = mtype_del,
297 [IPSET_TEST] = mtype_test,
298 },
299 .destroy = mtype_destroy,
300 .flush = mtype_flush,
301 .head = mtype_head,
302 .list = mtype_list,
303 .same_set = mtype_same_set,
304 };
305
306 #endif