16#include <linux/netfilter/nf_tables.h>
19#include <libmnl/libmnl.h>
20#include <libnftnl/expr.h>
21#include <libnftnl/rule.h>
29nftnl_expr_connlimit_set(
struct nftnl_expr *e, uint16_t type,
30 const void *data, uint32_t data_len)
35 case NFTNL_EXPR_CONNLIMIT_COUNT:
36 memcpy(&connlimit->count, data, data_len);
38 case NFTNL_EXPR_CONNLIMIT_FLAGS:
39 memcpy(&connlimit->flags, data, data_len);
46nftnl_expr_connlimit_get(
const struct nftnl_expr *e, uint16_t type,
52 case NFTNL_EXPR_CONNLIMIT_COUNT:
53 *data_len =
sizeof(connlimit->count);
54 return &connlimit->count;
55 case NFTNL_EXPR_CONNLIMIT_FLAGS:
56 *data_len =
sizeof(connlimit->flags);
57 return &connlimit->flags;
62static int nftnl_expr_connlimit_cb(
const struct nlattr *attr,
void *data)
64 const struct nlattr **tb = data;
65 int type = mnl_attr_get_type(attr);
67 if (mnl_attr_type_valid(attr, NFTA_CONNLIMIT_MAX) < 0)
71 case NFTA_CONNLIMIT_COUNT:
72 case NFTA_CONNLIMIT_FLAGS:
73 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
83nftnl_expr_connlimit_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
87 if (e->flags & (1 << NFTNL_EXPR_CONNLIMIT_COUNT))
88 mnl_attr_put_u32(nlh, NFTA_CONNLIMIT_COUNT,
89 htonl(connlimit->count));
90 if (e->flags & (1 << NFTNL_EXPR_CONNLIMIT_FLAGS))
91 mnl_attr_put_u32(nlh, NFTA_CONNLIMIT_FLAGS,
92 htonl(connlimit->flags));
96nftnl_expr_connlimit_parse(
struct nftnl_expr *e,
struct nlattr *attr)
99 struct nlattr *tb[NFTA_CONNLIMIT_MAX+1] = {};
101 if (mnl_attr_parse_nested(attr, nftnl_expr_connlimit_cb, tb) < 0)
104 if (tb[NFTA_CONNLIMIT_COUNT]) {
106 ntohl(mnl_attr_get_u32(tb[NFTA_CONNLIMIT_COUNT]));
107 e->flags |= (1 << NFTNL_EXPR_CONNLIMIT_COUNT);
109 if (tb[NFTA_CONNLIMIT_FLAGS]) {
111 ntohl(mnl_attr_get_u32(tb[NFTA_CONNLIMIT_FLAGS]));
112 e->flags |= (1 << NFTNL_EXPR_CONNLIMIT_FLAGS);
118static int nftnl_expr_connlimit_snprintf(
char *buf,
size_t len,
120 const struct nftnl_expr *e)
124 return snprintf(buf, len,
"count %u flags %x ",
125 connlimit->count, connlimit->flags);
128static struct attr_policy connlimit_attr_policy[__NFTNL_EXPR_CONNLIMIT_MAX] = {
129 [NFTNL_EXPR_CONNLIMIT_COUNT] = { .maxlen =
sizeof(uint32_t) },
130 [NFTNL_EXPR_CONNLIMIT_FLAGS] = { .maxlen =
sizeof(uint32_t) },
133struct expr_ops expr_ops_connlimit = {
136 .nftnl_max_attr = __NFTNL_EXPR_CONNLIMIT_MAX - 1,
137 .attr_policy = connlimit_attr_policy,
138 .set = nftnl_expr_connlimit_set,
139 .get = nftnl_expr_connlimit_get,
140 .parse = nftnl_expr_connlimit_parse,
141 .build = nftnl_expr_connlimit_build,
142 .output = nftnl_expr_connlimit_snprintf,