14 #include <arpa/inet.h>
18 #include <linux/netfilter/nf_tables.h>
21 #include <libmnl/libmnl.h>
22 #include <libnftnl/expr.h>
23 #include <libnftnl/rule.h>
31 nftnl_expr_counter_set(
struct nftnl_expr *e, uint16_t type,
32 const void *data, uint32_t data_len)
37 case NFTNL_EXPR_CTR_BYTES:
38 ctr->bytes = *((uint64_t *)data);
40 case NFTNL_EXPR_CTR_PACKETS:
41 ctr->pkts = *((uint64_t *)data);
50 nftnl_expr_counter_get(
const struct nftnl_expr *e, uint16_t type,
56 case NFTNL_EXPR_CTR_BYTES:
57 *data_len =
sizeof(ctr->bytes);
59 case NFTNL_EXPR_CTR_PACKETS:
60 *data_len =
sizeof(ctr->pkts);
66 static int nftnl_expr_counter_cb(
const struct nlattr *attr,
void *data)
68 const struct nlattr **tb = data;
69 int type = mnl_attr_get_type(attr);
71 if (mnl_attr_type_valid(attr, NFTA_COUNTER_MAX) < 0)
75 case NFTA_COUNTER_BYTES:
76 case NFTA_COUNTER_PACKETS:
77 if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
87 nftnl_expr_counter_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
91 if (e->flags & (1 << NFTNL_EXPR_CTR_BYTES))
92 mnl_attr_put_u64(nlh, NFTA_COUNTER_BYTES, htobe64(ctr->bytes));
93 if (e->flags & (1 << NFTNL_EXPR_CTR_PACKETS))
94 mnl_attr_put_u64(nlh, NFTA_COUNTER_PACKETS, htobe64(ctr->pkts));
98 nftnl_expr_counter_parse(
struct nftnl_expr *e,
struct nlattr *attr)
101 struct nlattr *tb[NFTA_COUNTER_MAX+1] = {};
103 if (mnl_attr_parse_nested(attr, nftnl_expr_counter_cb, tb) < 0)
106 if (tb[NFTA_COUNTER_BYTES]) {
107 ctr->bytes = be64toh(mnl_attr_get_u64(tb[NFTA_COUNTER_BYTES]));
108 e->flags |= (1 << NFTNL_EXPR_CTR_BYTES);
110 if (tb[NFTA_COUNTER_PACKETS]) {
111 ctr->pkts = be64toh(mnl_attr_get_u64(tb[NFTA_COUNTER_PACKETS]));
112 e->flags |= (1 << NFTNL_EXPR_CTR_PACKETS);
119 nftnl_expr_counter_json_parse(
struct nftnl_expr *e, json_t *root,
120 struct nftnl_parse_err *err)
125 if (nftnl_jansson_parse_val(root,
"pkts", NFTNL_TYPE_U64, &uval64,
127 nftnl_expr_set_u64(e, NFTNL_EXPR_CTR_PACKETS, uval64);
129 if (nftnl_jansson_parse_val(root,
"bytes", NFTNL_TYPE_U64, &uval64,
131 nftnl_expr_set_u64(e, NFTNL_EXPR_CTR_BYTES, uval64);
140 static int nftnl_expr_counter_export(
char *buf,
size_t size,
141 const struct nftnl_expr *e,
int type)
144 NFTNL_BUF_INIT(b, buf, size);
146 if (e->flags & (1 << NFTNL_EXPR_CTR_PACKETS))
147 nftnl_buf_u64(&b, type, ctr->pkts, PKTS);
148 if (e->flags & (1 << NFTNL_EXPR_CTR_BYTES))
149 nftnl_buf_u64(&b, type, ctr->bytes, BYTES);
151 return nftnl_buf_done(&b);
154 static int nftnl_expr_counter_snprintf_default(
char *buf,
size_t len,
155 const struct nftnl_expr *e)
159 return snprintf(buf, len,
"pkts %"PRIu64
" bytes %"PRIu64
" ",
160 ctr->pkts, ctr->bytes);
163 static int nftnl_expr_counter_snprintf(
char *buf,
size_t len, uint32_t type,
165 const struct nftnl_expr *e)
168 case NFTNL_OUTPUT_DEFAULT:
169 return nftnl_expr_counter_snprintf_default(buf, len, e);
170 case NFTNL_OUTPUT_XML:
171 case NFTNL_OUTPUT_JSON:
172 return nftnl_expr_counter_export(buf, len, e, type);
179 static bool nftnl_expr_counter_cmp(
const struct nftnl_expr *e1,
180 const struct nftnl_expr *e2)
186 if (e1->flags & (1 << NFTNL_EXPR_CTR_PACKETS))
187 eq &= (c1->pkts == c2->pkts);
188 if (e1->flags & (1 << NFTNL_EXPR_CTR_BYTES))
189 eq &= (c1->pkts == c2->pkts);
194 struct expr_ops expr_ops_counter = {
197 .max_attr = NFTA_COUNTER_MAX,
198 .cmp = nftnl_expr_counter_cmp,
199 .set = nftnl_expr_counter_set,
200 .get = nftnl_expr_counter_get,
201 .parse = nftnl_expr_counter_parse,
202 .build = nftnl_expr_counter_build,
203 .snprintf = nftnl_expr_counter_snprintf,
204 .json_parse = nftnl_expr_counter_json_parse,