19 #include <netinet/in.h>
22 #include <libmnl/libmnl.h>
23 #include <linux/netfilter/nfnetlink.h>
24 #include <linux/netfilter/nf_tables.h>
26 #include <libnftnl/table.h>
30 struct list_head head;
40 EXPORT_SYMBOL(nftnl_table_alloc);
46 EXPORT_SYMBOL(nftnl_table_free);
49 if (t->flags & (1 << NFTNL_TABLE_NAME))
55 EXPORT_SYMBOL(nftnl_table_is_set);
56 bool nftnl_table_is_set(
const struct nftnl_table *t, uint16_t attr)
58 return t->flags & (1 << attr);
61 EXPORT_SYMBOL(nftnl_table_unset);
62 void nftnl_table_unset(
struct nftnl_table *t, uint16_t attr)
64 if (!(t->flags & (1 << attr)))
68 case NFTNL_TABLE_NAME:
71 case NFTNL_TABLE_FLAGS:
72 case NFTNL_TABLE_HANDLE:
73 case NFTNL_TABLE_FAMILY:
78 t->flags &= ~(1 << attr);
81 static uint32_t nftnl_table_validate[NFTNL_TABLE_MAX + 1] = {
82 [NFTNL_TABLE_FLAGS] =
sizeof(uint32_t),
83 [NFTNL_TABLE_FAMILY] =
sizeof(uint32_t),
84 [NFTNL_TABLE_HANDLE] =
sizeof(uint64_t),
87 EXPORT_SYMBOL(nftnl_table_set_data);
88 int nftnl_table_set_data(
struct nftnl_table *t, uint16_t attr,
89 const void *data, uint32_t data_len)
91 nftnl_assert_attr_exists(attr, NFTNL_TABLE_MAX);
92 nftnl_assert_validate(data, nftnl_table_validate, attr, data_len);
95 case NFTNL_TABLE_NAME:
96 if (t->flags & (1 << NFTNL_TABLE_NAME))
99 t->name = strdup(data);
103 case NFTNL_TABLE_HANDLE:
104 memcpy(&t->handle, data,
sizeof(t->handle));
106 case NFTNL_TABLE_FLAGS:
107 memcpy(&t->table_flags, data,
sizeof(t->table_flags));
109 case NFTNL_TABLE_FAMILY:
110 memcpy(&t->family, data,
sizeof(t->family));
112 case NFTNL_TABLE_USE:
113 memcpy(&t->use, data,
sizeof(t->use));
116 t->flags |= (1 << attr);
120 EXPORT_SYMBOL(nftnl_table_set);
121 void nftnl_table_set(
struct nftnl_table *t, uint16_t attr,
const void *data)
123 nftnl_table_set_data(t, attr, data, nftnl_table_validate[attr]);
126 EXPORT_SYMBOL(nftnl_table_set_u32);
127 void nftnl_table_set_u32(
struct nftnl_table *t, uint16_t attr, uint32_t val)
129 nftnl_table_set_data(t, attr, &val,
sizeof(uint32_t));
132 EXPORT_SYMBOL(nftnl_table_set_u64);
133 void nftnl_table_set_u64(
struct nftnl_table *t, uint16_t attr, uint64_t val)
135 nftnl_table_set_data(t, attr, &val,
sizeof(uint64_t));
138 EXPORT_SYMBOL(nftnl_table_set_u8);
139 void nftnl_table_set_u8(
struct nftnl_table *t, uint16_t attr, uint8_t val)
141 nftnl_table_set_data(t, attr, &val,
sizeof(uint8_t));
144 EXPORT_SYMBOL(nftnl_table_set_str);
145 int nftnl_table_set_str(
struct nftnl_table *t, uint16_t attr,
const char *str)
147 return nftnl_table_set_data(t, attr, str, strlen(str) + 1);
150 EXPORT_SYMBOL(nftnl_table_get_data);
151 const void *nftnl_table_get_data(
const struct nftnl_table *t, uint16_t attr,
154 if (!(t->flags & (1 << attr)))
158 case NFTNL_TABLE_NAME:
159 *data_len = strlen(t->name) + 1;
161 case NFTNL_TABLE_HANDLE:
162 *data_len =
sizeof(uint64_t);
164 case NFTNL_TABLE_FLAGS:
165 *data_len =
sizeof(uint32_t);
166 return &t->table_flags;
167 case NFTNL_TABLE_FAMILY:
168 *data_len =
sizeof(uint32_t);
170 case NFTNL_TABLE_USE:
171 *data_len =
sizeof(uint32_t);
177 EXPORT_SYMBOL(nftnl_table_get);
178 const void *nftnl_table_get(
const struct nftnl_table *t, uint16_t attr)
181 return nftnl_table_get_data(t, attr, &data_len);
184 EXPORT_SYMBOL(nftnl_table_get_u32);
185 uint32_t nftnl_table_get_u32(
const struct nftnl_table *t, uint16_t attr)
187 const void *ret = nftnl_table_get(t, attr);
188 return ret == NULL ? 0 : *((uint32_t *)ret);
191 EXPORT_SYMBOL(nftnl_table_get_u64);
192 uint64_t nftnl_table_get_u64(
const struct nftnl_table *t, uint16_t attr)
194 const void *ret = nftnl_table_get(t, attr);
195 return ret == NULL ? 0 : *((uint64_t *)ret);
198 EXPORT_SYMBOL(nftnl_table_get_u8);
199 uint8_t nftnl_table_get_u8(
const struct nftnl_table *t, uint16_t attr)
201 const void *ret = nftnl_table_get(t, attr);
202 return ret == NULL ? 0 : *((uint8_t *)ret);
205 EXPORT_SYMBOL(nftnl_table_get_str);
206 const char *nftnl_table_get_str(
const struct nftnl_table *t, uint16_t attr)
208 return nftnl_table_get(t, attr);
211 EXPORT_SYMBOL(nftnl_table_nlmsg_build_payload);
212 void nftnl_table_nlmsg_build_payload(
struct nlmsghdr *nlh,
const struct nftnl_table *t)
214 if (t->flags & (1 << NFTNL_TABLE_NAME))
215 mnl_attr_put_strz(nlh, NFTA_TABLE_NAME, t->name);
216 if (t->flags & (1 << NFTNL_TABLE_HANDLE))
217 mnl_attr_put_u64(nlh, NFTA_TABLE_HANDLE, htobe64(t->handle));
218 if (t->flags & (1 << NFTNL_TABLE_FLAGS))
219 mnl_attr_put_u32(nlh, NFTA_TABLE_FLAGS, htonl(t->table_flags));
222 static int nftnl_table_parse_attr_cb(
const struct nlattr *attr,
void *data)
224 const struct nlattr **tb = data;
225 int type = mnl_attr_get_type(attr);
227 if (mnl_attr_type_valid(attr, NFTA_TABLE_MAX) < 0)
231 case NFTA_TABLE_NAME:
232 if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0)
235 case NFTA_TABLE_HANDLE:
236 if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
239 case NFTA_TABLE_FLAGS:
241 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
250 EXPORT_SYMBOL(nftnl_table_nlmsg_parse);
251 int nftnl_table_nlmsg_parse(
const struct nlmsghdr *nlh,
struct nftnl_table *t)
253 struct nlattr *tb[NFTA_TABLE_MAX+1] = {};
254 struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
256 if (mnl_attr_parse(nlh,
sizeof(*nfg), nftnl_table_parse_attr_cb, tb) < 0)
259 if (tb[NFTA_TABLE_NAME]) {
260 if (t->flags & (1 << NFTNL_TABLE_NAME))
262 t->name = strdup(mnl_attr_get_str(tb[NFTA_TABLE_NAME]));
265 t->flags |= (1 << NFTNL_TABLE_NAME);
267 if (tb[NFTA_TABLE_FLAGS]) {
268 t->table_flags = ntohl(mnl_attr_get_u32(tb[NFTA_TABLE_FLAGS]));
269 t->flags |= (1 << NFTNL_TABLE_FLAGS);
271 if (tb[NFTA_TABLE_USE]) {
272 t->use = ntohl(mnl_attr_get_u32(tb[NFTA_TABLE_USE]));
273 t->flags |= (1 << NFTNL_TABLE_USE);
275 if (tb[NFTA_TABLE_HANDLE]) {
276 t->handle = be64toh(mnl_attr_get_u64(tb[NFTA_TABLE_HANDLE]));
277 t->flags |= (1 << NFTNL_TABLE_HANDLE);
280 t->family = nfg->nfgen_family;
281 t->flags |= (1 << NFTNL_TABLE_FAMILY);
286 static int nftnl_table_do_parse(
struct nftnl_table *t,
enum nftnl_parse_type type,
287 const void *data,
struct nftnl_parse_err *err,
288 enum nftnl_parse_input input)
293 case NFTNL_PARSE_JSON:
294 case NFTNL_PARSE_XML:
304 EXPORT_SYMBOL(nftnl_table_parse);
305 int nftnl_table_parse(
struct nftnl_table *t,
enum nftnl_parse_type type,
306 const char *data,
struct nftnl_parse_err *err)
308 return nftnl_table_do_parse(t, type, data, err, NFTNL_PARSE_BUFFER);
311 EXPORT_SYMBOL(nftnl_table_parse_file);
312 int nftnl_table_parse_file(
struct nftnl_table *t,
enum nftnl_parse_type type,
313 FILE *fp,
struct nftnl_parse_err *err)
315 return nftnl_table_do_parse(t, type, fp, err, NFTNL_PARSE_FILE);
318 static int nftnl_table_snprintf_default(
char *buf,
size_t size,
321 return snprintf(buf, size,
"table %s %s flags %x use %d handle %llu",
322 t->name, nftnl_family2str(t->family),
323 t->table_flags, t->use, (
unsigned long long)t->handle);
326 static int nftnl_table_cmd_snprintf(
char *buf,
size_t size,
328 uint32_t type, uint32_t flags)
330 int ret, remain = size, offset = 0;
333 case NFTNL_OUTPUT_DEFAULT:
334 ret = nftnl_table_snprintf_default(buf + offset, remain, t);
335 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
337 case NFTNL_OUTPUT_XML:
338 case NFTNL_OUTPUT_JSON:
346 EXPORT_SYMBOL(nftnl_table_snprintf);
347 int nftnl_table_snprintf(
char *buf,
size_t size,
const struct nftnl_table *t,
348 uint32_t type, uint32_t flags)
353 return nftnl_table_cmd_snprintf(buf, size, t, nftnl_flag2cmd(flags), type,
357 static int nftnl_table_do_snprintf(
char *buf,
size_t size,
const void *t,
358 uint32_t cmd, uint32_t type, uint32_t flags)
360 return nftnl_table_snprintf(buf, size, t, type, flags);
363 EXPORT_SYMBOL(nftnl_table_fprintf);
364 int nftnl_table_fprintf(FILE *fp,
const struct nftnl_table *t, uint32_t type,
367 return nftnl_fprintf(fp, t, NFTNL_CMD_UNSPEC, type, flags,
368 nftnl_table_do_snprintf);
372 struct list_head list;
375 EXPORT_SYMBOL(nftnl_table_list_alloc);
384 INIT_LIST_HEAD(&list->list);
389 EXPORT_SYMBOL(nftnl_table_list_free);
394 list_for_each_entry_safe(r, tmp, &list->list, head) {
401 EXPORT_SYMBOL(nftnl_table_list_is_empty);
404 return list_empty(&list->list);
407 EXPORT_SYMBOL(nftnl_table_list_add);
410 list_add(&r->head, &list->list);
413 EXPORT_SYMBOL(nftnl_table_list_add_tail);
416 list_add_tail(&r->head, &list->list);
419 EXPORT_SYMBOL(nftnl_table_list_del);
425 EXPORT_SYMBOL(nftnl_table_list_foreach);
433 list_for_each_entry_safe(cur, tmp, &table_list->list, head) {
446 EXPORT_SYMBOL(nftnl_table_list_iter_create);
457 if (nftnl_table_list_is_empty(l))
460 iter->cur = list_entry(l->list.next,
struct nftnl_table, head);
465 EXPORT_SYMBOL(nftnl_table_list_iter_next);
474 iter->cur = list_entry(iter->cur->head.next,
struct nftnl_table, head);
475 if (&iter->cur->head == iter->list->list.next)
481 EXPORT_SYMBOL(nftnl_table_list_iter_destroy);