12 #include <arpa/inet.h>
16 #include <linux/netfilter/nf_tables.h>
18 #include <libmnl/libmnl.h>
19 #include <libnftnl/object.h>
25 nftnl_obj_counter_set(
struct nftnl_obj *e, uint16_t type,
26 const void *data, uint32_t data_len)
28 struct nftnl_obj_counter *ctr = nftnl_obj_data(e);
31 case NFTNL_OBJ_CTR_BYTES:
32 memcpy(&ctr->bytes, data, data_len);
34 case NFTNL_OBJ_CTR_PKTS:
35 memcpy(&ctr->pkts, data, data_len);
42 nftnl_obj_counter_get(
const struct nftnl_obj *e, uint16_t type,
45 struct nftnl_obj_counter *ctr = nftnl_obj_data(e);
48 case NFTNL_OBJ_CTR_BYTES:
49 *data_len =
sizeof(ctr->bytes);
51 case NFTNL_OBJ_CTR_PKTS:
52 *data_len =
sizeof(ctr->pkts);
58 static int nftnl_obj_counter_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_COUNTER_MAX) < 0)
67 case NFTA_COUNTER_BYTES:
68 case NFTA_COUNTER_PACKETS:
69 if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
79 nftnl_obj_counter_build(
struct nlmsghdr *nlh,
const struct nftnl_obj *e)
81 struct nftnl_obj_counter *ctr = nftnl_obj_data(e);
83 if (e->flags & (1 << NFTNL_OBJ_CTR_BYTES))
84 mnl_attr_put_u64(nlh, NFTA_COUNTER_BYTES, htobe64(ctr->bytes));
85 if (e->flags & (1 << NFTNL_OBJ_CTR_PKTS))
86 mnl_attr_put_u64(nlh, NFTA_COUNTER_PACKETS, htobe64(ctr->pkts));
90 nftnl_obj_counter_parse(
struct nftnl_obj *e,
struct nlattr *attr)
92 struct nftnl_obj_counter *ctr = nftnl_obj_data(e);
93 struct nlattr *tb[NFTA_COUNTER_MAX+1] = {};
95 if (mnl_attr_parse_nested(attr, nftnl_obj_counter_cb, tb) < 0)
98 if (tb[NFTA_COUNTER_BYTES]) {
99 ctr->bytes = be64toh(mnl_attr_get_u64(tb[NFTA_COUNTER_BYTES]));
100 e->flags |= (1 << NFTNL_OBJ_CTR_BYTES);
102 if (tb[NFTA_COUNTER_PACKETS]) {
103 ctr->pkts = be64toh(mnl_attr_get_u64(tb[NFTA_COUNTER_PACKETS]));
104 e->flags |= (1 << NFTNL_OBJ_CTR_PKTS);
110 static int nftnl_obj_counter_snprintf(
char *buf,
size_t len, uint32_t flags,
111 const struct nftnl_obj *e)
113 struct nftnl_obj_counter *ctr = nftnl_obj_data(e);
115 return snprintf(buf, len,
"pkts %"PRIu64
" bytes %"PRIu64
" ",
116 ctr->pkts, ctr->bytes);
119 static struct attr_policy obj_ctr_attr_policy[__NFTNL_OBJ_CTR_MAX] = {
120 [NFTNL_OBJ_CTR_BYTES] = { .maxlen =
sizeof(uint64_t) },
121 [NFTNL_OBJ_CTR_PKTS] = { .maxlen =
sizeof(uint64_t) },
124 struct obj_ops obj_ops_counter = {
126 .type = NFT_OBJECT_COUNTER,
127 .alloc_len =
sizeof(
struct nftnl_obj_counter),
128 .nftnl_max_attr = __NFTNL_OBJ_CTR_MAX - 1,
129 .attr_policy = obj_ctr_attr_policy,
130 .set = nftnl_obj_counter_set,
131 .get = nftnl_obj_counter_get,
132 .parse = nftnl_obj_counter_parse,
133 .build = nftnl_obj_counter_build,
134 .output = nftnl_obj_counter_snprintf,