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x86/msr-index: Cleanup bit defines
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1/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
2 * Copyright (C) 2013 Smoothwall Ltd. <vytas.dauksa@smoothwall.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9/* Kernel module implementing an IP set type: the hash:ip,mark type */
10
11#include <linux/jhash.h>
12#include <linux/module.h>
13#include <linux/ip.h>
14#include <linux/skbuff.h>
15#include <linux/errno.h>
16#include <linux/random.h>
17#include <net/ip.h>
18#include <net/ipv6.h>
19#include <net/netlink.h>
20#include <net/tcp.h>
21
22#include <linux/netfilter.h>
23#include <linux/netfilter/ipset/pfxlen.h>
24#include <linux/netfilter/ipset/ip_set.h>
25#include <linux/netfilter/ipset/ip_set_hash.h>
26
27#define IPSET_TYPE_REV_MIN 0
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28/* 1 Forceadd support */
29#define IPSET_TYPE_REV_MAX 2 /* skbinfo support */
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30
31MODULE_LICENSE("GPL");
32MODULE_AUTHOR("Vytas Dauksa <vytas.dauksa@smoothwall.net>");
33IP_SET_MODULE_DESC("hash:ip,mark", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
34MODULE_ALIAS("ip_set_hash:ip,mark");
35
36/* Type specific function prefix */
37#define HTYPE hash_ipmark
4d0e5c07 38#define IP_SET_HASH_WITH_MARKMASK
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39
40/* IPv4 variant */
41
42/* Member elements */
43struct hash_ipmark4_elem {
44 __be32 ip;
45 __u32 mark;
46};
47
48/* Common functions */
49
50static inline bool
51hash_ipmark4_data_equal(const struct hash_ipmark4_elem *ip1,
52 const struct hash_ipmark4_elem *ip2,
53 u32 *multi)
54{
55 return ip1->ip == ip2->ip &&
56 ip1->mark == ip2->mark;
57}
58
59static bool
60hash_ipmark4_data_list(struct sk_buff *skb,
61 const struct hash_ipmark4_elem *data)
62{
63 if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) ||
64 nla_put_net32(skb, IPSET_ATTR_MARK, htonl(data->mark)))
65 goto nla_put_failure;
728a7e69 66 return false;
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67
68nla_put_failure:
728a7e69 69 return true;
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70}
71
72static inline void
73hash_ipmark4_data_next(struct hash_ipmark4_elem *next,
74 const struct hash_ipmark4_elem *d)
75{
76 next->ip = d->ip;
77}
78
1823fb79
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79#define MTYPE hash_ipmark4
80#define HOST_MASK 32
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81#include "ip_set_hash_gen.h"
82
83static int
84hash_ipmark4_kadt(struct ip_set *set, const struct sk_buff *skb,
85 const struct xt_action_param *par,
86 enum ipset_adt adt, struct ip_set_adt_opt *opt)
87{
21956ab2 88 const struct hash_ipmark4 *h = set->data;
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89 ipset_adtfn adtfn = set->variant->adt[adt];
90 struct hash_ipmark4_elem e = { };
91 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
92
93 e.mark = skb->mark;
4d0e5c07 94 e.mark &= h->markmask;
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95
96 ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip);
97 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
98}
99
100static int
101hash_ipmark4_uadt(struct ip_set *set, struct nlattr *tb[],
102 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
103{
21956ab2 104 const struct hash_ipmark4 *h = set->data;
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105 ipset_adtfn adtfn = set->variant->adt[adt];
106 struct hash_ipmark4_elem e = { };
107 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
108 u32 ip, ip_to = 0;
109 int ret;
110
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111 if (tb[IPSET_ATTR_LINENO])
112 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
113
3b02b56c 114 if (unlikely(!tb[IPSET_ATTR_IP] ||
7dd37bc8 115 !ip_set_attr_netorder(tb, IPSET_ATTR_MARK)))
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116 return -IPSET_ERR_PROTOCOL;
117
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118 ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &e.ip);
119 if (ret)
120 return ret;
121
122 ret = ip_set_get_extensions(set, tb, &ext);
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123 if (ret)
124 return ret;
125
2006aa4a 126 e.mark = ntohl(nla_get_be32(tb[IPSET_ATTR_MARK]));
4d0e5c07 127 e.mark &= h->markmask;
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128
129 if (adt == IPSET_TEST ||
130 !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR])) {
131 ret = adtfn(set, &e, &ext, &ext, flags);
132 return ip_set_eexist(ret, flags) ? 0 : ret;
133 }
134
135 ip_to = ip = ntohl(e.ip);
136 if (tb[IPSET_ATTR_IP_TO]) {
137 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
138 if (ret)
139 return ret;
140 if (ip > ip_to)
141 swap(ip, ip_to);
142 } else if (tb[IPSET_ATTR_CIDR]) {
143 u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
144
cabfd139 145 if (!cidr || cidr > HOST_MASK)
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146 return -IPSET_ERR_INVALID_CIDR;
147 ip_set_mask_from_to(ip, ip_to, cidr);
148 }
149
150 if (retried)
151 ip = ntohl(h->next.ip);
48596a8d 152 for (; ip <= ip_to; ip++) {
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153 e.ip = htonl(ip);
154 ret = adtfn(set, &e, &ext, &ext, flags);
155
156 if (ret && !ip_set_eexist(ret, flags))
157 return ret;
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158
159 ret = 0;
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160 }
161 return ret;
162}
163
164/* IPv6 variant */
165
166struct hash_ipmark6_elem {
167 union nf_inet_addr ip;
168 __u32 mark;
169};
170
171/* Common functions */
172
173static inline bool
174hash_ipmark6_data_equal(const struct hash_ipmark6_elem *ip1,
175 const struct hash_ipmark6_elem *ip2,
176 u32 *multi)
177{
178 return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) &&
179 ip1->mark == ip2->mark;
180}
181
182static bool
183hash_ipmark6_data_list(struct sk_buff *skb,
184 const struct hash_ipmark6_elem *data)
185{
186 if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) ||
187 nla_put_net32(skb, IPSET_ATTR_MARK, htonl(data->mark)))
188 goto nla_put_failure;
728a7e69 189 return false;
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190
191nla_put_failure:
728a7e69 192 return true;
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193}
194
195static inline void
21956ab2 196hash_ipmark6_data_next(struct hash_ipmark6_elem *next,
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197 const struct hash_ipmark6_elem *d)
198{
199}
200
201#undef MTYPE
3b02b56c 202#undef HOST_MASK
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203
204#define MTYPE hash_ipmark6
3b02b56c 205#define HOST_MASK 128
1823fb79 206#define IP_SET_EMIT_CREATE
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207#include "ip_set_hash_gen.h"
208
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209static int
210hash_ipmark6_kadt(struct ip_set *set, const struct sk_buff *skb,
211 const struct xt_action_param *par,
212 enum ipset_adt adt, struct ip_set_adt_opt *opt)
213{
21956ab2 214 const struct hash_ipmark6 *h = set->data;
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215 ipset_adtfn adtfn = set->variant->adt[adt];
216 struct hash_ipmark6_elem e = { };
217 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
218
219 e.mark = skb->mark;
4d0e5c07 220 e.mark &= h->markmask;
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221
222 ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip.in6);
223 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
224}
225
226static int
227hash_ipmark6_uadt(struct ip_set *set, struct nlattr *tb[],
228 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
229{
21956ab2 230 const struct hash_ipmark6 *h = set->data;
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231 ipset_adtfn adtfn = set->variant->adt[adt];
232 struct hash_ipmark6_elem e = { };
233 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
234 int ret;
235
a212e08e
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236 if (tb[IPSET_ATTR_LINENO])
237 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
238
3b02b56c 239 if (unlikely(!tb[IPSET_ATTR_IP] ||
2c227f27 240 !ip_set_attr_netorder(tb, IPSET_ATTR_MARK)))
3b02b56c 241 return -IPSET_ERR_PROTOCOL;
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242 if (unlikely(tb[IPSET_ATTR_IP_TO]))
243 return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
244 if (unlikely(tb[IPSET_ATTR_CIDR])) {
245 u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
246
247 if (cidr != HOST_MASK)
248 return -IPSET_ERR_INVALID_CIDR;
249 }
3b02b56c 250
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251 ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
252 if (ret)
253 return ret;
254
255 ret = ip_set_get_extensions(set, tb, &ext);
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256 if (ret)
257 return ret;
258
2006aa4a 259 e.mark = ntohl(nla_get_be32(tb[IPSET_ATTR_MARK]));
4d0e5c07 260 e.mark &= h->markmask;
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261
262 if (adt == IPSET_TEST) {
263 ret = adtfn(set, &e, &ext, &ext, flags);
264 return ip_set_eexist(ret, flags) ? 0 : ret;
265 }
266
267 ret = adtfn(set, &e, &ext, &ext, flags);
268 if (ret && !ip_set_eexist(ret, flags))
269 return ret;
3b02b56c 270
ca0f6a5c 271 return 0;
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272}
273
274static struct ip_set_type hash_ipmark_type __read_mostly = {
275 .name = "hash:ip,mark",
276 .protocol = IPSET_PROTOCOL,
277 .features = IPSET_TYPE_IP | IPSET_TYPE_MARK,
278 .dimension = IPSET_DIM_TWO,
279 .family = NFPROTO_UNSPEC,
280 .revision_min = IPSET_TYPE_REV_MIN,
281 .revision_max = IPSET_TYPE_REV_MAX,
282 .create = hash_ipmark_create,
283 .create_policy = {
4d0e5c07 284 [IPSET_ATTR_MARKMASK] = { .type = NLA_U32 },
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285 [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
286 [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
287 [IPSET_ATTR_PROBES] = { .type = NLA_U8 },
288 [IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
289 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
290 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
291 },
292 .adt_policy = {
293 [IPSET_ATTR_IP] = { .type = NLA_NESTED },
294 [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
295 [IPSET_ATTR_MARK] = { .type = NLA_U32 },
296 [IPSET_ATTR_CIDR] = { .type = NLA_U8 },
297 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
298 [IPSET_ATTR_LINENO] = { .type = NLA_U32 },
299 [IPSET_ATTR_BYTES] = { .type = NLA_U64 },
300 [IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
03726186
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301 [IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING,
302 .len = IPSET_MAX_COMMENT_SIZE },
af331419
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303 [IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
304 [IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
305 [IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
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306 },
307 .me = THIS_MODULE,
308};
309
310static int __init
311hash_ipmark_init(void)
312{
313 return ip_set_type_register(&hash_ipmark_type);
314}
315
316static void __exit
317hash_ipmark_fini(void)
318{
18f84d41 319 rcu_barrier();
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320 ip_set_type_unregister(&hash_ipmark_type);
321}
322
323module_init(hash_ipmark_init);
324module_exit(hash_ipmark_fini);