16#include <linux/netfilter/nf_tables.h>
19#include <libmnl/libmnl.h>
20#include <libnftnl/expr.h>
21#include <libnftnl/rule.h>
29static int nftnl_expr_quota_set(
struct nftnl_expr *e, uint16_t type,
30 const void *data, uint32_t data_len)
35 case NFTNL_EXPR_QUOTA_BYTES:
36 memcpy("a->bytes, data, data_len);
38 case NFTNL_EXPR_QUOTA_CONSUMED:
39 memcpy("a->consumed, data, data_len);
41 case NFTNL_EXPR_QUOTA_FLAGS:
42 memcpy("a->flags, data, data_len);
48static const void *nftnl_expr_quota_get(
const struct nftnl_expr *e,
49 uint16_t type, uint32_t *data_len)
54 case NFTNL_EXPR_QUOTA_BYTES:
55 *data_len =
sizeof(quota->bytes);
57 case NFTNL_EXPR_QUOTA_CONSUMED:
58 *data_len =
sizeof(quota->consumed);
59 return "a->consumed;
60 case NFTNL_EXPR_QUOTA_FLAGS:
61 *data_len =
sizeof(quota->flags);
67static int nftnl_expr_quota_cb(
const struct nlattr *attr,
void *data)
69 int type = mnl_attr_get_type(attr);
70 const struct nlattr **tb = data;
72 if (mnl_attr_type_valid(attr, NFTA_QUOTA_MAX) < 0)
76 case NFTA_QUOTA_BYTES:
77 case NFTA_QUOTA_CONSUMED:
78 if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
81 case NFTA_QUOTA_FLAGS:
82 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
92nftnl_expr_quota_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
96 if (e->flags & (1 << NFTNL_EXPR_QUOTA_BYTES))
97 mnl_attr_put_u64(nlh, NFTA_QUOTA_BYTES, htobe64(quota->bytes));
98 if (e->flags & (1 << NFTNL_EXPR_QUOTA_CONSUMED))
99 mnl_attr_put_u64(nlh, NFTA_QUOTA_CONSUMED, htobe64(quota->consumed));
100 if (e->flags & (1 << NFTNL_EXPR_QUOTA_FLAGS))
101 mnl_attr_put_u32(nlh, NFTA_QUOTA_FLAGS, htonl(quota->flags));
105nftnl_expr_quota_parse(
struct nftnl_expr *e,
struct nlattr *attr)
108 struct nlattr *tb[NFTA_QUOTA_MAX + 1] = {};
110 if (mnl_attr_parse_nested(attr, nftnl_expr_quota_cb, tb) < 0)
113 if (tb[NFTA_QUOTA_BYTES]) {
114 quota->bytes = be64toh(mnl_attr_get_u64(tb[NFTA_QUOTA_BYTES]));
115 e->flags |= (1 << NFTNL_EXPR_QUOTA_BYTES);
117 if (tb[NFTA_QUOTA_CONSUMED]) {
118 quota->consumed = be64toh(mnl_attr_get_u64(tb[NFTA_QUOTA_CONSUMED]));
119 e->flags |= (1 << NFTNL_EXPR_QUOTA_CONSUMED);
121 if (tb[NFTA_QUOTA_FLAGS]) {
122 quota->flags = ntohl(mnl_attr_get_u32(tb[NFTA_QUOTA_FLAGS]));
123 e->flags |= (1 << NFTNL_EXPR_QUOTA_FLAGS);
129static int nftnl_expr_quota_snprintf(
char *buf,
size_t len,
131 const struct nftnl_expr *e)
135 return snprintf(buf, len,
136 "bytes %"PRIu64
" consumed %"PRIu64
" flags %u ",
137 quota->bytes, quota->consumed, quota->flags);
140static struct attr_policy quota_attr_policy[__NFTNL_EXPR_QUOTA_MAX] = {
141 [NFTNL_EXPR_QUOTA_BYTES] = { .maxlen =
sizeof(uint64_t) },
142 [NFTNL_EXPR_QUOTA_FLAGS] = { .maxlen =
sizeof(uint32_t) },
143 [NFTNL_EXPR_QUOTA_CONSUMED] = { .maxlen =
sizeof(uint64_t) },
146struct expr_ops expr_ops_quota = {
149 .nftnl_max_attr = __NFTNL_EXPR_QUOTA_MAX - 1,
150 .attr_policy = quota_attr_policy,
151 .set = nftnl_expr_quota_set,
152 .get = nftnl_expr_quota_get,
153 .parse = nftnl_expr_quota_parse,
154 .build = nftnl_expr_quota_build,
155 .output = nftnl_expr_quota_snprintf,