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,
sizeof(connlimit->count));
38 case NFTNL_EXPR_CONNLIMIT_FLAGS:
39 memcpy(&connlimit->flags, data,
sizeof(connlimit->flags));
48nftnl_expr_connlimit_get(
const struct nftnl_expr *e, uint16_t type,
54 case NFTNL_EXPR_CONNLIMIT_COUNT:
55 *data_len =
sizeof(connlimit->count);
56 return &connlimit->count;
57 case NFTNL_EXPR_CONNLIMIT_FLAGS:
58 *data_len =
sizeof(connlimit->flags);
59 return &connlimit->flags;
64static int nftnl_expr_connlimit_cb(
const struct nlattr *attr,
void *data)
66 const struct nlattr **tb = data;
67 int type = mnl_attr_get_type(attr);
69 if (mnl_attr_type_valid(attr, NFTA_CONNLIMIT_MAX) < 0)
73 case NFTA_CONNLIMIT_COUNT:
74 case NFTA_CONNLIMIT_FLAGS:
75 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
85nftnl_expr_connlimit_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
89 if (e->flags & (1 << NFTNL_EXPR_CONNLIMIT_COUNT))
90 mnl_attr_put_u32(nlh, NFTA_CONNLIMIT_COUNT,
91 htonl(connlimit->count));
92 if (e->flags & (1 << NFTNL_EXPR_CONNLIMIT_FLAGS))
93 mnl_attr_put_u32(nlh, NFTA_CONNLIMIT_FLAGS,
94 htonl(connlimit->flags));
98nftnl_expr_connlimit_parse(
struct nftnl_expr *e,
struct nlattr *attr)
101 struct nlattr *tb[NFTA_CONNLIMIT_MAX+1] = {};
103 if (mnl_attr_parse_nested(attr, nftnl_expr_connlimit_cb, tb) < 0)
106 if (tb[NFTA_CONNLIMIT_COUNT]) {
108 ntohl(mnl_attr_get_u32(tb[NFTA_CONNLIMIT_COUNT]));
109 e->flags |= (1 << NFTNL_EXPR_CONNLIMIT_COUNT);
111 if (tb[NFTA_CONNLIMIT_FLAGS]) {
113 ntohl(mnl_attr_get_u32(tb[NFTA_CONNLIMIT_FLAGS]));
114 e->flags |= (1 << NFTNL_EXPR_CONNLIMIT_FLAGS);
120static int nftnl_expr_connlimit_snprintf(
char *buf,
size_t len,
122 const struct nftnl_expr *e)
126 return snprintf(buf, len,
"count %u flags %x ",
127 connlimit->count, connlimit->flags);
130struct expr_ops expr_ops_connlimit = {
133 .max_attr = NFTA_CONNLIMIT_MAX,
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,