12 #include <linux/netfilter/nf_tables.h>
15 #include <libmnl/libmnl.h>
16 #include <libnftnl/expr.h>
17 #include <libnftnl/rule.h>
25 static int nftnl_expr_quota_set(
struct nftnl_expr *e, uint16_t type,
26 const void *data, uint32_t data_len)
31 case NFTNL_EXPR_QUOTA_BYTES:
32 memcpy("a->bytes, data, data_len);
34 case NFTNL_EXPR_QUOTA_CONSUMED:
35 memcpy("a->consumed, data, data_len);
37 case NFTNL_EXPR_QUOTA_FLAGS:
38 memcpy("a->flags, data, data_len);
44 static const void *nftnl_expr_quota_get(
const struct nftnl_expr *e,
45 uint16_t type, uint32_t *data_len)
50 case NFTNL_EXPR_QUOTA_BYTES:
51 *data_len =
sizeof(quota->bytes);
53 case NFTNL_EXPR_QUOTA_CONSUMED:
54 *data_len =
sizeof(quota->consumed);
55 return "a->consumed;
56 case NFTNL_EXPR_QUOTA_FLAGS:
57 *data_len =
sizeof(quota->flags);
63 static int nftnl_expr_quota_cb(
const struct nlattr *attr,
void *data)
65 int type = mnl_attr_get_type(attr);
66 const struct nlattr **tb = data;
68 if (mnl_attr_type_valid(attr, NFTA_QUOTA_MAX) < 0)
72 case NFTA_QUOTA_BYTES:
73 case NFTA_QUOTA_CONSUMED:
74 if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
77 case NFTA_QUOTA_FLAGS:
78 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
88 nftnl_expr_quota_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
92 if (e->flags & (1 << NFTNL_EXPR_QUOTA_BYTES))
93 mnl_attr_put_u64(nlh, NFTA_QUOTA_BYTES, htobe64(quota->bytes));
94 if (e->flags & (1 << NFTNL_EXPR_QUOTA_CONSUMED))
95 mnl_attr_put_u64(nlh, NFTA_QUOTA_CONSUMED, htobe64(quota->consumed));
96 if (e->flags & (1 << NFTNL_EXPR_QUOTA_FLAGS))
97 mnl_attr_put_u32(nlh, NFTA_QUOTA_FLAGS, htonl(quota->flags));
101 nftnl_expr_quota_parse(
struct nftnl_expr *e,
struct nlattr *attr)
104 struct nlattr *tb[NFTA_QUOTA_MAX + 1] = {};
106 if (mnl_attr_parse_nested(attr, nftnl_expr_quota_cb, tb) < 0)
109 if (tb[NFTA_QUOTA_BYTES]) {
110 quota->bytes = be64toh(mnl_attr_get_u64(tb[NFTA_QUOTA_BYTES]));
111 e->flags |= (1 << NFTNL_EXPR_QUOTA_BYTES);
113 if (tb[NFTA_QUOTA_CONSUMED]) {
114 quota->consumed = be64toh(mnl_attr_get_u64(tb[NFTA_QUOTA_CONSUMED]));
115 e->flags |= (1 << NFTNL_EXPR_QUOTA_CONSUMED);
117 if (tb[NFTA_QUOTA_FLAGS]) {
118 quota->flags = ntohl(mnl_attr_get_u32(tb[NFTA_QUOTA_FLAGS]));
119 e->flags |= (1 << NFTNL_EXPR_QUOTA_FLAGS);
125 static int nftnl_expr_quota_snprintf(
char *buf,
size_t len,
127 const struct nftnl_expr *e)
131 return snprintf(buf, len,
132 "bytes %"PRIu64
" consumed %"PRIu64
" flags %u ",
133 quota->bytes, quota->consumed, quota->flags);
136 static struct attr_policy quota_attr_policy[__NFTNL_EXPR_QUOTA_MAX] = {
137 [NFTNL_EXPR_QUOTA_BYTES] = { .maxlen =
sizeof(uint64_t) },
138 [NFTNL_EXPR_QUOTA_FLAGS] = { .maxlen =
sizeof(uint32_t) },
139 [NFTNL_EXPR_QUOTA_CONSUMED] = { .maxlen =
sizeof(uint64_t) },
142 struct expr_ops expr_ops_quota = {
145 .nftnl_max_attr = __NFTNL_EXPR_QUOTA_MAX - 1,
146 .attr_policy = quota_attr_policy,
147 .set = nftnl_expr_quota_set,
148 .get = nftnl_expr_quota_get,
149 .parse = nftnl_expr_quota_parse,
150 .build = nftnl_expr_quota_build,
151 .output = nftnl_expr_quota_snprintf,