Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 1 | /* Copyright (C) 2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 as |
| 5 | * published by the Free Software Foundation. |
| 6 | */ |
| 7 | |
| 8 | /* Kernel module implementing an IP set type: the hash:net,iface type */ |
| 9 | |
| 10 | #include <linux/jhash.h> |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/ip.h> |
| 13 | #include <linux/skbuff.h> |
| 14 | #include <linux/errno.h> |
| 15 | #include <linux/random.h> |
| 16 | #include <linux/rbtree.h> |
| 17 | #include <net/ip.h> |
| 18 | #include <net/ipv6.h> |
| 19 | #include <net/netlink.h> |
| 20 | |
| 21 | #include <linux/netfilter.h> |
| 22 | #include <linux/netfilter/ipset/pfxlen.h> |
| 23 | #include <linux/netfilter/ipset/ip_set.h> |
| 24 | #include <linux/netfilter/ipset/ip_set_timeout.h> |
| 25 | #include <linux/netfilter/ipset/ip_set_hash.h> |
| 26 | |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 27 | #define REVISION_MIN 0 |
| 28 | /* 1 nomatch flag support added */ |
| 29 | #define REVISION_MAX 2 /* /0 support added */ |
| 30 | |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 31 | MODULE_LICENSE("GPL"); |
| 32 | MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 33 | IP_SET_MODULE_DESC("hash:net,iface", REVISION_MIN, REVISION_MAX); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 34 | MODULE_ALIAS("ip_set_hash:net,iface"); |
| 35 | |
| 36 | /* Interface name rbtree */ |
| 37 | |
| 38 | struct iface_node { |
| 39 | struct rb_node node; |
| 40 | char iface[IFNAMSIZ]; |
| 41 | }; |
| 42 | |
| 43 | #define iface_data(n) (rb_entry(n, struct iface_node, node)->iface) |
| 44 | |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 45 | static void |
| 46 | rbtree_destroy(struct rb_root *root) |
| 47 | { |
| 48 | struct rb_node *p, *n = root->rb_node; |
| 49 | struct iface_node *node; |
| 50 | |
| 51 | /* Non-recursive destroy, like in ext3 */ |
| 52 | while (n) { |
| 53 | if (n->rb_left) { |
| 54 | n = n->rb_left; |
| 55 | continue; |
| 56 | } |
| 57 | if (n->rb_right) { |
| 58 | n = n->rb_right; |
| 59 | continue; |
| 60 | } |
| 61 | p = rb_parent(n); |
| 62 | node = rb_entry(n, struct iface_node, node); |
| 63 | if (!p) |
| 64 | *root = RB_ROOT; |
| 65 | else if (p->rb_left == n) |
| 66 | p->rb_left = NULL; |
| 67 | else if (p->rb_right == n) |
| 68 | p->rb_right = NULL; |
| 69 | |
| 70 | kfree(node); |
| 71 | n = p; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | static int |
| 76 | iface_test(struct rb_root *root, const char **iface) |
| 77 | { |
| 78 | struct rb_node *n = root->rb_node; |
| 79 | |
| 80 | while (n) { |
| 81 | const char *d = iface_data(n); |
Florian Westphal | ef5b6e1 | 2012-06-17 09:56:46 +0000 | [diff] [blame] | 82 | int res = strcmp(*iface, d); |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 83 | |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 84 | if (res < 0) |
| 85 | n = n->rb_left; |
| 86 | else if (res > 0) |
| 87 | n = n->rb_right; |
| 88 | else { |
| 89 | *iface = d; |
| 90 | return 1; |
| 91 | } |
| 92 | } |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | static int |
| 97 | iface_add(struct rb_root *root, const char **iface) |
| 98 | { |
| 99 | struct rb_node **n = &(root->rb_node), *p = NULL; |
| 100 | struct iface_node *d; |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 101 | |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 102 | while (*n) { |
| 103 | char *ifname = iface_data(*n); |
Florian Westphal | ef5b6e1 | 2012-06-17 09:56:46 +0000 | [diff] [blame] | 104 | int res = strcmp(*iface, ifname); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 105 | |
| 106 | p = *n; |
| 107 | if (res < 0) |
| 108 | n = &((*n)->rb_left); |
| 109 | else if (res > 0) |
| 110 | n = &((*n)->rb_right); |
| 111 | else { |
| 112 | *iface = ifname; |
| 113 | return 0; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | d = kzalloc(sizeof(*d), GFP_ATOMIC); |
| 118 | if (!d) |
| 119 | return -ENOMEM; |
| 120 | strcpy(d->iface, *iface); |
| 121 | |
| 122 | rb_link_node(&d->node, p, n); |
| 123 | rb_insert_color(&d->node, root); |
| 124 | |
| 125 | *iface = d->iface; |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | /* Type specific function prefix */ |
| 130 | #define TYPE hash_netiface |
| 131 | |
| 132 | static bool |
| 133 | hash_netiface_same_set(const struct ip_set *a, const struct ip_set *b); |
| 134 | |
| 135 | #define hash_netiface4_same_set hash_netiface_same_set |
| 136 | #define hash_netiface6_same_set hash_netiface_same_set |
| 137 | |
| 138 | #define STREQ(a, b) (strcmp(a, b) == 0) |
| 139 | |
| 140 | /* The type variant functions: IPv4 */ |
| 141 | |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 142 | struct hash_netiface4_elem_hashed { |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 143 | __be32 ip; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 144 | u8 physdev; |
| 145 | u8 cidr; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 146 | u8 nomatch; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 147 | u8 elem; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 148 | }; |
| 149 | |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 150 | #define HKEY_DATALEN sizeof(struct hash_netiface4_elem_hashed) |
| 151 | |
| 152 | /* Member elements without timeout */ |
| 153 | struct hash_netiface4_elem { |
| 154 | __be32 ip; |
| 155 | u8 physdev; |
| 156 | u8 cidr; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 157 | u8 nomatch; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 158 | u8 elem; |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 159 | const char *iface; |
| 160 | }; |
| 161 | |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 162 | /* Member elements with timeout support */ |
| 163 | struct hash_netiface4_telem { |
| 164 | __be32 ip; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 165 | u8 physdev; |
| 166 | u8 cidr; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 167 | u8 nomatch; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 168 | u8 elem; |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 169 | const char *iface; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 170 | unsigned long timeout; |
| 171 | }; |
| 172 | |
| 173 | static inline bool |
| 174 | hash_netiface4_data_equal(const struct hash_netiface4_elem *ip1, |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 175 | const struct hash_netiface4_elem *ip2, |
| 176 | u32 *multi) |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 177 | { |
| 178 | return ip1->ip == ip2->ip && |
| 179 | ip1->cidr == ip2->cidr && |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 180 | (++*multi) && |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 181 | ip1->physdev == ip2->physdev && |
| 182 | ip1->iface == ip2->iface; |
| 183 | } |
| 184 | |
| 185 | static inline bool |
| 186 | hash_netiface4_data_isnull(const struct hash_netiface4_elem *elem) |
| 187 | { |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 188 | return elem->elem == 0; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | static inline void |
| 192 | hash_netiface4_data_copy(struct hash_netiface4_elem *dst, |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 193 | const struct hash_netiface4_elem *src) |
| 194 | { |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 195 | memcpy(dst, src, sizeof(*dst)); |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | static inline void |
| 199 | hash_netiface4_data_flags(struct hash_netiface4_elem *dst, u32 flags) |
| 200 | { |
| 201 | dst->nomatch = flags & IPSET_FLAG_NOMATCH; |
| 202 | } |
| 203 | |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 204 | static inline int |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 205 | hash_netiface4_data_match(const struct hash_netiface4_elem *elem) |
| 206 | { |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 207 | return elem->nomatch ? -ENOTEMPTY : 1; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | static inline void |
| 211 | hash_netiface4_data_netmask(struct hash_netiface4_elem *elem, u8 cidr) |
| 212 | { |
| 213 | elem->ip &= ip_set_netmask(cidr); |
| 214 | elem->cidr = cidr; |
| 215 | } |
| 216 | |
| 217 | static inline void |
| 218 | hash_netiface4_data_zero_out(struct hash_netiface4_elem *elem) |
| 219 | { |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 220 | elem->elem = 0; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | static bool |
| 224 | hash_netiface4_data_list(struct sk_buff *skb, |
| 225 | const struct hash_netiface4_elem *data) |
| 226 | { |
| 227 | u32 flags = data->physdev ? IPSET_FLAG_PHYSDEV : 0; |
| 228 | |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 229 | if (data->nomatch) |
| 230 | flags |= IPSET_FLAG_NOMATCH; |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 231 | if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) || |
| 232 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 233 | nla_put_string(skb, IPSET_ATTR_IFACE, data->iface) || |
| 234 | (flags && |
| 235 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) |
| 236 | goto nla_put_failure; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 237 | return 0; |
| 238 | |
| 239 | nla_put_failure: |
| 240 | return 1; |
| 241 | } |
| 242 | |
| 243 | static bool |
| 244 | hash_netiface4_data_tlist(struct sk_buff *skb, |
| 245 | const struct hash_netiface4_elem *data) |
| 246 | { |
| 247 | const struct hash_netiface4_telem *tdata = |
| 248 | (const struct hash_netiface4_telem *)data; |
| 249 | u32 flags = data->physdev ? IPSET_FLAG_PHYSDEV : 0; |
| 250 | |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 251 | if (data->nomatch) |
| 252 | flags |= IPSET_FLAG_NOMATCH; |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 253 | if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) || |
| 254 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 255 | nla_put_string(skb, IPSET_ATTR_IFACE, data->iface) || |
| 256 | (flags && |
| 257 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))) || |
| 258 | nla_put_net32(skb, IPSET_ATTR_TIMEOUT, |
| 259 | htonl(ip_set_timeout_get(tdata->timeout)))) |
| 260 | goto nla_put_failure; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 261 | |
| 262 | return 0; |
| 263 | |
| 264 | nla_put_failure: |
| 265 | return 1; |
| 266 | } |
| 267 | |
| 268 | #define IP_SET_HASH_WITH_NETS |
| 269 | #define IP_SET_HASH_WITH_RBTREE |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 270 | #define IP_SET_HASH_WITH_MULTI |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 271 | |
| 272 | #define PF 4 |
| 273 | #define HOST_MASK 32 |
| 274 | #include <linux/netfilter/ipset/ip_set_ahash.h> |
| 275 | |
| 276 | static inline void |
| 277 | hash_netiface4_data_next(struct ip_set_hash *h, |
| 278 | const struct hash_netiface4_elem *d) |
| 279 | { |
Jozsef Kadlecsik | 6e27c9b | 2012-09-21 21:44:58 +0200 | [diff] [blame] | 280 | h->next.ip = d->ip; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | static int |
| 284 | hash_netiface4_kadt(struct ip_set *set, const struct sk_buff *skb, |
| 285 | const struct xt_action_param *par, |
| 286 | enum ipset_adt adt, const struct ip_set_adt_opt *opt) |
| 287 | { |
| 288 | struct ip_set_hash *h = set->data; |
| 289 | ipset_adtfn adtfn = set->variant->adt[adt]; |
| 290 | struct hash_netiface4_elem data = { |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 291 | .cidr = h->nets[0].cidr ? h->nets[0].cidr : HOST_MASK, |
| 292 | .elem = 1, |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 293 | }; |
| 294 | int ret; |
| 295 | |
| 296 | if (data.cidr == 0) |
| 297 | return -EINVAL; |
| 298 | if (adt == IPSET_TEST) |
| 299 | data.cidr = HOST_MASK; |
| 300 | |
| 301 | ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip); |
| 302 | data.ip &= ip_set_netmask(data.cidr); |
| 303 | |
| 304 | #define IFACE(dir) (par->dir ? par->dir->name : NULL) |
| 305 | #define PHYSDEV(dir) (nf_bridge->dir ? nf_bridge->dir->name : NULL) |
| 306 | #define SRCDIR (opt->flags & IPSET_DIM_TWO_SRC) |
| 307 | |
| 308 | if (opt->cmdflags & IPSET_FLAG_PHYSDEV) { |
| 309 | #ifdef CONFIG_BRIDGE_NETFILTER |
| 310 | const struct nf_bridge_info *nf_bridge = skb->nf_bridge; |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 311 | |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 312 | if (!nf_bridge) |
| 313 | return -EINVAL; |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 314 | data.iface = SRCDIR ? PHYSDEV(physindev) : PHYSDEV(physoutdev); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 315 | data.physdev = 1; |
| 316 | #else |
| 317 | data.iface = NULL; |
| 318 | #endif |
| 319 | } else |
| 320 | data.iface = SRCDIR ? IFACE(in) : IFACE(out); |
| 321 | |
| 322 | if (!data.iface) |
| 323 | return -EINVAL; |
| 324 | ret = iface_test(&h->rbtree, &data.iface); |
| 325 | if (adt == IPSET_ADD) { |
| 326 | if (!ret) { |
| 327 | ret = iface_add(&h->rbtree, &data.iface); |
| 328 | if (ret) |
| 329 | return ret; |
| 330 | } |
| 331 | } else if (!ret) |
| 332 | return ret; |
| 333 | |
| 334 | return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags); |
| 335 | } |
| 336 | |
| 337 | static int |
| 338 | hash_netiface4_uadt(struct ip_set *set, struct nlattr *tb[], |
| 339 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
| 340 | { |
| 341 | struct ip_set_hash *h = set->data; |
| 342 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 343 | struct hash_netiface4_elem data = { .cidr = HOST_MASK, .elem = 1 }; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 344 | u32 ip = 0, ip_to, last; |
| 345 | u32 timeout = h->timeout; |
Florian Westphal | ef5b6e1 | 2012-06-17 09:56:46 +0000 | [diff] [blame] | 346 | char iface[IFNAMSIZ]; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 347 | int ret; |
| 348 | |
| 349 | if (unlikely(!tb[IPSET_ATTR_IP] || |
| 350 | !tb[IPSET_ATTR_IFACE] || |
| 351 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || |
| 352 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS))) |
| 353 | return -IPSET_ERR_PROTOCOL; |
| 354 | |
| 355 | if (tb[IPSET_ATTR_LINENO]) |
| 356 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 357 | |
| 358 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip); |
| 359 | if (ret) |
| 360 | return ret; |
| 361 | |
| 362 | if (tb[IPSET_ATTR_CIDR]) { |
| 363 | data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 364 | if (data.cidr > HOST_MASK) |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 365 | return -IPSET_ERR_INVALID_CIDR; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | if (tb[IPSET_ATTR_TIMEOUT]) { |
| 369 | if (!with_timeout(h->timeout)) |
| 370 | return -IPSET_ERR_TIMEOUT; |
| 371 | timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); |
| 372 | } |
| 373 | |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 374 | strcpy(iface, nla_data(tb[IPSET_ATTR_IFACE])); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 375 | data.iface = iface; |
| 376 | ret = iface_test(&h->rbtree, &data.iface); |
| 377 | if (adt == IPSET_ADD) { |
| 378 | if (!ret) { |
| 379 | ret = iface_add(&h->rbtree, &data.iface); |
| 380 | if (ret) |
| 381 | return ret; |
| 382 | } |
| 383 | } else if (!ret) |
| 384 | return ret; |
| 385 | |
| 386 | if (tb[IPSET_ATTR_CADT_FLAGS]) { |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 387 | u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); |
| 388 | if (cadt_flags & IPSET_FLAG_PHYSDEV) |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 389 | data.physdev = 1; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 390 | if (adt == IPSET_ADD && (cadt_flags & IPSET_FLAG_NOMATCH)) |
| 391 | flags |= (cadt_flags << 16); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 392 | } |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 393 | if (adt == IPSET_TEST || !tb[IPSET_ATTR_IP_TO]) { |
| 394 | data.ip = htonl(ip & ip_set_hostmask(data.cidr)); |
| 395 | ret = adtfn(set, &data, timeout, flags); |
| 396 | return ip_set_eexist(ret, flags) ? 0 : ret; |
| 397 | } |
| 398 | |
| 399 | if (tb[IPSET_ATTR_IP_TO]) { |
| 400 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); |
| 401 | if (ret) |
| 402 | return ret; |
| 403 | if (ip_to < ip) |
| 404 | swap(ip, ip_to); |
| 405 | if (ip + UINT_MAX == ip_to) |
| 406 | return -IPSET_ERR_HASH_RANGE; |
| 407 | } else { |
| 408 | ip_set_mask_from_to(ip, ip_to, data.cidr); |
| 409 | } |
| 410 | |
| 411 | if (retried) |
Jozsef Kadlecsik | 6e27c9b | 2012-09-21 21:44:58 +0200 | [diff] [blame] | 412 | ip = ntohl(h->next.ip); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 413 | while (!after(ip, ip_to)) { |
| 414 | data.ip = htonl(ip); |
| 415 | last = ip_set_range_to_cidr(ip, ip_to, &data.cidr); |
| 416 | ret = adtfn(set, &data, timeout, flags); |
| 417 | |
| 418 | if (ret && !ip_set_eexist(ret, flags)) |
| 419 | return ret; |
| 420 | else |
| 421 | ret = 0; |
| 422 | ip = last + 1; |
| 423 | } |
| 424 | return ret; |
| 425 | } |
| 426 | |
| 427 | static bool |
| 428 | hash_netiface_same_set(const struct ip_set *a, const struct ip_set *b) |
| 429 | { |
| 430 | const struct ip_set_hash *x = a->data; |
| 431 | const struct ip_set_hash *y = b->data; |
| 432 | |
| 433 | /* Resizing changes htable_bits, so we ignore it */ |
| 434 | return x->maxelem == y->maxelem && |
| 435 | x->timeout == y->timeout; |
| 436 | } |
| 437 | |
| 438 | /* The type variant functions: IPv6 */ |
| 439 | |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 440 | struct hash_netiface6_elem_hashed { |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 441 | union nf_inet_addr ip; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 442 | u8 physdev; |
| 443 | u8 cidr; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 444 | u8 nomatch; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 445 | u8 elem; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 446 | }; |
| 447 | |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 448 | #define HKEY_DATALEN sizeof(struct hash_netiface6_elem_hashed) |
| 449 | |
| 450 | struct hash_netiface6_elem { |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 451 | union nf_inet_addr ip; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 452 | u8 physdev; |
| 453 | u8 cidr; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 454 | u8 nomatch; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 455 | u8 elem; |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 456 | const char *iface; |
| 457 | }; |
| 458 | |
| 459 | struct hash_netiface6_telem { |
| 460 | union nf_inet_addr ip; |
| 461 | u8 physdev; |
| 462 | u8 cidr; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 463 | u8 nomatch; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 464 | u8 elem; |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 465 | const char *iface; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 466 | unsigned long timeout; |
| 467 | }; |
| 468 | |
| 469 | static inline bool |
| 470 | hash_netiface6_data_equal(const struct hash_netiface6_elem *ip1, |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 471 | const struct hash_netiface6_elem *ip2, |
| 472 | u32 *multi) |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 473 | { |
| 474 | return ipv6_addr_cmp(&ip1->ip.in6, &ip2->ip.in6) == 0 && |
| 475 | ip1->cidr == ip2->cidr && |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 476 | (++*multi) && |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 477 | ip1->physdev == ip2->physdev && |
| 478 | ip1->iface == ip2->iface; |
| 479 | } |
| 480 | |
| 481 | static inline bool |
| 482 | hash_netiface6_data_isnull(const struct hash_netiface6_elem *elem) |
| 483 | { |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 484 | return elem->elem == 0; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 485 | } |
| 486 | |
| 487 | static inline void |
| 488 | hash_netiface6_data_copy(struct hash_netiface6_elem *dst, |
| 489 | const struct hash_netiface6_elem *src) |
| 490 | { |
| 491 | memcpy(dst, src, sizeof(*dst)); |
| 492 | } |
| 493 | |
| 494 | static inline void |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 495 | hash_netiface6_data_flags(struct hash_netiface6_elem *dst, u32 flags) |
| 496 | { |
| 497 | dst->nomatch = flags & IPSET_FLAG_NOMATCH; |
| 498 | } |
| 499 | |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 500 | static inline int |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 501 | hash_netiface6_data_match(const struct hash_netiface6_elem *elem) |
| 502 | { |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 503 | return elem->nomatch ? -ENOTEMPTY : 1; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | static inline void |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 507 | hash_netiface6_data_zero_out(struct hash_netiface6_elem *elem) |
| 508 | { |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 509 | elem->elem = 0; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | static inline void |
| 513 | ip6_netmask(union nf_inet_addr *ip, u8 prefix) |
| 514 | { |
| 515 | ip->ip6[0] &= ip_set_netmask6(prefix)[0]; |
| 516 | ip->ip6[1] &= ip_set_netmask6(prefix)[1]; |
| 517 | ip->ip6[2] &= ip_set_netmask6(prefix)[2]; |
| 518 | ip->ip6[3] &= ip_set_netmask6(prefix)[3]; |
| 519 | } |
| 520 | |
| 521 | static inline void |
| 522 | hash_netiface6_data_netmask(struct hash_netiface6_elem *elem, u8 cidr) |
| 523 | { |
| 524 | ip6_netmask(&elem->ip, cidr); |
| 525 | elem->cidr = cidr; |
| 526 | } |
| 527 | |
| 528 | static bool |
| 529 | hash_netiface6_data_list(struct sk_buff *skb, |
| 530 | const struct hash_netiface6_elem *data) |
| 531 | { |
| 532 | u32 flags = data->physdev ? IPSET_FLAG_PHYSDEV : 0; |
| 533 | |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 534 | if (data->nomatch) |
| 535 | flags |= IPSET_FLAG_NOMATCH; |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 536 | if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) || |
| 537 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 538 | nla_put_string(skb, IPSET_ATTR_IFACE, data->iface) || |
| 539 | (flags && |
| 540 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) |
| 541 | goto nla_put_failure; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 542 | return 0; |
| 543 | |
| 544 | nla_put_failure: |
| 545 | return 1; |
| 546 | } |
| 547 | |
| 548 | static bool |
| 549 | hash_netiface6_data_tlist(struct sk_buff *skb, |
| 550 | const struct hash_netiface6_elem *data) |
| 551 | { |
| 552 | const struct hash_netiface6_telem *e = |
| 553 | (const struct hash_netiface6_telem *)data; |
| 554 | u32 flags = data->physdev ? IPSET_FLAG_PHYSDEV : 0; |
| 555 | |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 556 | if (data->nomatch) |
| 557 | flags |= IPSET_FLAG_NOMATCH; |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 558 | if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &e->ip.in6) || |
| 559 | nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr) || |
| 560 | nla_put_string(skb, IPSET_ATTR_IFACE, data->iface) || |
| 561 | (flags && |
| 562 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))) || |
| 563 | nla_put_net32(skb, IPSET_ATTR_TIMEOUT, |
| 564 | htonl(ip_set_timeout_get(e->timeout)))) |
| 565 | goto nla_put_failure; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 566 | return 0; |
| 567 | |
| 568 | nla_put_failure: |
| 569 | return 1; |
| 570 | } |
| 571 | |
| 572 | #undef PF |
| 573 | #undef HOST_MASK |
| 574 | |
| 575 | #define PF 6 |
| 576 | #define HOST_MASK 128 |
| 577 | #include <linux/netfilter/ipset/ip_set_ahash.h> |
| 578 | |
| 579 | static inline void |
| 580 | hash_netiface6_data_next(struct ip_set_hash *h, |
| 581 | const struct hash_netiface6_elem *d) |
| 582 | { |
| 583 | } |
| 584 | |
| 585 | static int |
| 586 | hash_netiface6_kadt(struct ip_set *set, const struct sk_buff *skb, |
| 587 | const struct xt_action_param *par, |
| 588 | enum ipset_adt adt, const struct ip_set_adt_opt *opt) |
| 589 | { |
| 590 | struct ip_set_hash *h = set->data; |
| 591 | ipset_adtfn adtfn = set->variant->adt[adt]; |
| 592 | struct hash_netiface6_elem data = { |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 593 | .cidr = h->nets[0].cidr ? h->nets[0].cidr : HOST_MASK, |
| 594 | .elem = 1, |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 595 | }; |
| 596 | int ret; |
| 597 | |
| 598 | if (data.cidr == 0) |
| 599 | return -EINVAL; |
| 600 | if (adt == IPSET_TEST) |
| 601 | data.cidr = HOST_MASK; |
| 602 | |
| 603 | ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip.in6); |
| 604 | ip6_netmask(&data.ip, data.cidr); |
| 605 | |
| 606 | if (opt->cmdflags & IPSET_FLAG_PHYSDEV) { |
| 607 | #ifdef CONFIG_BRIDGE_NETFILTER |
| 608 | const struct nf_bridge_info *nf_bridge = skb->nf_bridge; |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 609 | |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 610 | if (!nf_bridge) |
| 611 | return -EINVAL; |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 612 | data.iface = SRCDIR ? PHYSDEV(physindev) : PHYSDEV(physoutdev); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 613 | data.physdev = 1; |
| 614 | #else |
| 615 | data.iface = NULL; |
| 616 | #endif |
| 617 | } else |
| 618 | data.iface = SRCDIR ? IFACE(in) : IFACE(out); |
| 619 | |
| 620 | if (!data.iface) |
| 621 | return -EINVAL; |
| 622 | ret = iface_test(&h->rbtree, &data.iface); |
| 623 | if (adt == IPSET_ADD) { |
| 624 | if (!ret) { |
| 625 | ret = iface_add(&h->rbtree, &data.iface); |
| 626 | if (ret) |
| 627 | return ret; |
| 628 | } |
| 629 | } else if (!ret) |
| 630 | return ret; |
| 631 | |
| 632 | return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags); |
| 633 | } |
| 634 | |
| 635 | static int |
| 636 | hash_netiface6_uadt(struct ip_set *set, struct nlattr *tb[], |
| 637 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
| 638 | { |
| 639 | struct ip_set_hash *h = set->data; |
| 640 | ipset_adtfn adtfn = set->variant->adt[adt]; |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 641 | struct hash_netiface6_elem data = { .cidr = HOST_MASK, .elem = 1 }; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 642 | u32 timeout = h->timeout; |
Florian Westphal | ef5b6e1 | 2012-06-17 09:56:46 +0000 | [diff] [blame] | 643 | char iface[IFNAMSIZ]; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 644 | int ret; |
| 645 | |
| 646 | if (unlikely(!tb[IPSET_ATTR_IP] || |
| 647 | !tb[IPSET_ATTR_IFACE] || |
| 648 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || |
| 649 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS))) |
| 650 | return -IPSET_ERR_PROTOCOL; |
| 651 | if (unlikely(tb[IPSET_ATTR_IP_TO])) |
| 652 | return -IPSET_ERR_HASH_RANGE_UNSUPPORTED; |
| 653 | |
| 654 | if (tb[IPSET_ATTR_LINENO]) |
| 655 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 656 | |
| 657 | ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &data.ip); |
| 658 | if (ret) |
| 659 | return ret; |
| 660 | |
| 661 | if (tb[IPSET_ATTR_CIDR]) |
| 662 | data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); |
Jozsef Kadlecsik | bd9087e | 2012-09-10 21:22:23 +0200 | [diff] [blame] | 663 | if (data.cidr > HOST_MASK) |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 664 | return -IPSET_ERR_INVALID_CIDR; |
| 665 | ip6_netmask(&data.ip, data.cidr); |
| 666 | |
| 667 | if (tb[IPSET_ATTR_TIMEOUT]) { |
| 668 | if (!with_timeout(h->timeout)) |
| 669 | return -IPSET_ERR_TIMEOUT; |
| 670 | timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); |
| 671 | } |
| 672 | |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 673 | strcpy(iface, nla_data(tb[IPSET_ATTR_IFACE])); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 674 | data.iface = iface; |
| 675 | ret = iface_test(&h->rbtree, &data.iface); |
| 676 | if (adt == IPSET_ADD) { |
| 677 | if (!ret) { |
| 678 | ret = iface_add(&h->rbtree, &data.iface); |
| 679 | if (ret) |
| 680 | return ret; |
| 681 | } |
| 682 | } else if (!ret) |
| 683 | return ret; |
| 684 | |
| 685 | if (tb[IPSET_ATTR_CADT_FLAGS]) { |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 686 | u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); |
| 687 | if (cadt_flags & IPSET_FLAG_PHYSDEV) |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 688 | data.physdev = 1; |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 689 | if (adt == IPSET_ADD && (cadt_flags & IPSET_FLAG_NOMATCH)) |
| 690 | flags |= (cadt_flags << 16); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | ret = adtfn(set, &data, timeout, flags); |
| 694 | |
| 695 | return ip_set_eexist(ret, flags) ? 0 : ret; |
| 696 | } |
| 697 | |
| 698 | /* Create hash:ip type of sets */ |
| 699 | |
| 700 | static int |
| 701 | hash_netiface_create(struct ip_set *set, struct nlattr *tb[], u32 flags) |
| 702 | { |
| 703 | struct ip_set_hash *h; |
| 704 | u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM; |
| 705 | u8 hbits; |
Jozsef Kadlecsik | 26a5d3c | 2012-05-14 01:47:01 +0000 | [diff] [blame] | 706 | size_t hsize; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 707 | |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 708 | if (!(set->family == NFPROTO_IPV4 || set->family == NFPROTO_IPV6)) |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 709 | return -IPSET_ERR_INVALID_FAMILY; |
| 710 | |
| 711 | if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) || |
| 712 | !ip_set_optattr_netorder(tb, IPSET_ATTR_MAXELEM) || |
| 713 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT))) |
| 714 | return -IPSET_ERR_PROTOCOL; |
| 715 | |
| 716 | if (tb[IPSET_ATTR_HASHSIZE]) { |
| 717 | hashsize = ip_set_get_h32(tb[IPSET_ATTR_HASHSIZE]); |
| 718 | if (hashsize < IPSET_MIMINAL_HASHSIZE) |
| 719 | hashsize = IPSET_MIMINAL_HASHSIZE; |
| 720 | } |
| 721 | |
| 722 | if (tb[IPSET_ATTR_MAXELEM]) |
| 723 | maxelem = ip_set_get_h32(tb[IPSET_ATTR_MAXELEM]); |
| 724 | |
| 725 | h = kzalloc(sizeof(*h) |
| 726 | + sizeof(struct ip_set_hash_nets) |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 727 | * (set->family == NFPROTO_IPV4 ? 32 : 128), GFP_KERNEL); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 728 | if (!h) |
| 729 | return -ENOMEM; |
| 730 | |
| 731 | h->maxelem = maxelem; |
| 732 | get_random_bytes(&h->initval, sizeof(h->initval)); |
| 733 | h->timeout = IPSET_NO_TIMEOUT; |
Jozsef Kadlecsik | 89dc79b | 2011-07-21 12:06:18 +0200 | [diff] [blame] | 734 | h->ahash_max = AHASH_MAX_SIZE; |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 735 | |
| 736 | hbits = htable_bits(hashsize); |
Jozsef Kadlecsik | 26a5d3c | 2012-05-14 01:47:01 +0000 | [diff] [blame] | 737 | hsize = htable_size(hbits); |
| 738 | if (hsize == 0) { |
| 739 | kfree(h); |
| 740 | return -ENOMEM; |
| 741 | } |
| 742 | h->table = ip_set_alloc(hsize); |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 743 | if (!h->table) { |
| 744 | kfree(h); |
| 745 | return -ENOMEM; |
| 746 | } |
| 747 | h->table->htable_bits = hbits; |
| 748 | h->rbtree = RB_ROOT; |
| 749 | |
| 750 | set->data = h; |
| 751 | |
| 752 | if (tb[IPSET_ATTR_TIMEOUT]) { |
| 753 | h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); |
| 754 | |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 755 | set->variant = set->family == NFPROTO_IPV4 |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 756 | ? &hash_netiface4_tvariant : &hash_netiface6_tvariant; |
| 757 | |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 758 | if (set->family == NFPROTO_IPV4) |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 759 | hash_netiface4_gc_init(set); |
| 760 | else |
| 761 | hash_netiface6_gc_init(set); |
| 762 | } else { |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 763 | set->variant = set->family == NFPROTO_IPV4 |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 764 | ? &hash_netiface4_variant : &hash_netiface6_variant; |
| 765 | } |
| 766 | |
| 767 | pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n", |
| 768 | set->name, jhash_size(h->table->htable_bits), |
| 769 | h->table->htable_bits, h->maxelem, set->data, h->table); |
| 770 | |
| 771 | return 0; |
| 772 | } |
| 773 | |
| 774 | static struct ip_set_type hash_netiface_type __read_mostly = { |
| 775 | .name = "hash:net,iface", |
| 776 | .protocol = IPSET_PROTOCOL, |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 777 | .features = IPSET_TYPE_IP | IPSET_TYPE_IFACE | |
| 778 | IPSET_TYPE_NOMATCH, |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 779 | .dimension = IPSET_DIM_TWO, |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 780 | .family = NFPROTO_UNSPEC, |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 781 | .revision_min = REVISION_MIN, |
| 782 | .revision_max = REVISION_MAX, |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 783 | .create = hash_netiface_create, |
| 784 | .create_policy = { |
| 785 | [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 }, |
| 786 | [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 }, |
| 787 | [IPSET_ATTR_PROBES] = { .type = NLA_U8 }, |
| 788 | [IPSET_ATTR_RESIZE] = { .type = NLA_U8 }, |
| 789 | [IPSET_ATTR_PROTO] = { .type = NLA_U8 }, |
| 790 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
| 791 | }, |
| 792 | .adt_policy = { |
| 793 | [IPSET_ATTR_IP] = { .type = NLA_NESTED }, |
| 794 | [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED }, |
| 795 | [IPSET_ATTR_IFACE] = { .type = NLA_NUL_STRING, |
| 796 | .len = IPSET_MAXNAMELEN - 1 }, |
| 797 | [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, |
| 798 | [IPSET_ATTR_CIDR] = { .type = NLA_U8 }, |
| 799 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
| 800 | [IPSET_ATTR_LINENO] = { .type = NLA_U32 }, |
| 801 | }, |
| 802 | .me = THIS_MODULE, |
| 803 | }; |
| 804 | |
| 805 | static int __init |
| 806 | hash_netiface_init(void) |
| 807 | { |
| 808 | return ip_set_type_register(&hash_netiface_type); |
| 809 | } |
| 810 | |
| 811 | static void __exit |
| 812 | hash_netiface_fini(void) |
| 813 | { |
| 814 | ip_set_type_unregister(&hash_netiface_type); |
| 815 | } |
| 816 | |
| 817 | module_init(hash_netiface_init); |
| 818 | module_exit(hash_netiface_fini); |