12#include <linux/netfilter/nf_tables.h>
15#include <libmnl/libmnl.h>
16#include <libnftnl/expr.h>
17#include <libnftnl/rule.h>
25nftnl_expr_connlimit_set(
struct nftnl_expr *e, uint16_t type,
26 const void *data, uint32_t data_len)
31 case NFTNL_EXPR_CONNLIMIT_COUNT:
32 memcpy(&connlimit->count, data, data_len);
34 case NFTNL_EXPR_CONNLIMIT_FLAGS:
35 memcpy(&connlimit->flags, data, data_len);
42nftnl_expr_connlimit_get(
const struct nftnl_expr *e, uint16_t type,
48 case NFTNL_EXPR_CONNLIMIT_COUNT:
49 *data_len =
sizeof(connlimit->count);
50 return &connlimit->count;
51 case NFTNL_EXPR_CONNLIMIT_FLAGS:
52 *data_len =
sizeof(connlimit->flags);
53 return &connlimit->flags;
58static int nftnl_expr_connlimit_cb(
const struct nlattr *attr,
void *data)
60 const struct nlattr **tb = data;
61 int type = mnl_attr_get_type(attr);
63 if (mnl_attr_type_valid(attr, NFTA_CONNLIMIT_MAX) < 0)
67 case NFTA_CONNLIMIT_COUNT:
68 case NFTA_CONNLIMIT_FLAGS:
69 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
79nftnl_expr_connlimit_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
83 if (e->flags & (1 << NFTNL_EXPR_CONNLIMIT_COUNT))
84 mnl_attr_put_u32(nlh, NFTA_CONNLIMIT_COUNT,
85 htonl(connlimit->count));
86 if (e->flags & (1 << NFTNL_EXPR_CONNLIMIT_FLAGS))
87 mnl_attr_put_u32(nlh, NFTA_CONNLIMIT_FLAGS,
88 htonl(connlimit->flags));
92nftnl_expr_connlimit_parse(
struct nftnl_expr *e,
struct nlattr *attr)
95 struct nlattr *tb[NFTA_CONNLIMIT_MAX+1] = {};
97 if (mnl_attr_parse_nested(attr, nftnl_expr_connlimit_cb, tb) < 0)
100 if (tb[NFTA_CONNLIMIT_COUNT]) {
102 ntohl(mnl_attr_get_u32(tb[NFTA_CONNLIMIT_COUNT]));
103 e->flags |= (1 << NFTNL_EXPR_CONNLIMIT_COUNT);
105 if (tb[NFTA_CONNLIMIT_FLAGS]) {
107 ntohl(mnl_attr_get_u32(tb[NFTA_CONNLIMIT_FLAGS]));
108 e->flags |= (1 << NFTNL_EXPR_CONNLIMIT_FLAGS);
114static int nftnl_expr_connlimit_snprintf(
char *buf,
size_t len,
116 const struct nftnl_expr *e)
120 return snprintf(buf, len,
"count %u flags %x ",
121 connlimit->count, connlimit->flags);
124static struct attr_policy connlimit_attr_policy[__NFTNL_EXPR_CONNLIMIT_MAX] = {
125 [NFTNL_EXPR_CONNLIMIT_COUNT] = { .maxlen =
sizeof(uint32_t) },
126 [NFTNL_EXPR_CONNLIMIT_FLAGS] = { .maxlen =
sizeof(uint32_t) },
129struct expr_ops expr_ops_connlimit = {
132 .nftnl_max_attr = __NFTNL_EXPR_CONNLIMIT_MAX - 1,
133 .attr_policy = connlimit_attr_policy,
134 .set = nftnl_expr_connlimit_set,
135 .get = nftnl_expr_connlimit_get,
136 .parse = nftnl_expr_connlimit_parse,
137 .build = nftnl_expr_connlimit_build,
138 .output = nftnl_expr_connlimit_snprintf,