@@ -75,6 +75,11 @@ bool nftnl_udata_put_u32(struct nftnl_udata_buf *buf, uint8_t type,
bool nftnl_udata_put_strz(struct nftnl_udata_buf *buf, uint8_t type,
const char *strz);
+/* nest */
+struct nftnl_udata *nftnl_udata_nest_start(struct nftnl_udata_buf *buf,
+ uint8_t type);
+void nftnl_udata_nest_end(struct nftnl_udata_buf *buf, struct nftnl_udata *ud);
+
/* nftnl_udata_attr */
uint8_t nftnl_udata_type(const struct nftnl_udata *attr);
uint8_t nftnl_udata_len(const struct nftnl_udata *attr);
@@ -359,3 +359,8 @@ LIBNFTNL_13 {
nftnl_obj_set_data;
nftnl_flowtable_set_data;
} LIBNFTNL_12;
+
+LIBNFTNL_14 {
+ nftnl_udata_nest_start;
+ nftnl_udata_nest_end;
+} LIBNFTNL_13;
@@ -150,3 +150,20 @@ int nftnl_udata_parse(const void *data, uint32_t data_len, nftnl_udata_cb_t cb,
return ret;
}
+
+EXPORT_SYMBOL(nftnl_udata_nest_start);
+struct nftnl_udata *nftnl_udata_nest_start(struct nftnl_udata_buf *buf,
+ uint8_t type)
+{
+ struct nftnl_udata *ud = nftnl_udata_end(buf);
+
+ nftnl_udata_put(buf, type, 0, NULL);
+
+ return ud;
+}
+
+EXPORT_SYMBOL(nftnl_udata_nest_end);
+void nftnl_udata_nest_end(struct nftnl_udata_buf *buf, struct nftnl_udata *ud)
+{
+ ud->len = buf->end - (char *)ud;
+}
This patch adds nftnl_udata_nest_start() and nftnl_udata_nest_end() to build attribute nests. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> --- include/libnftnl/udata.h | 5 +++++ src/libnftnl.map | 5 +++++ src/udata.c | 17 +++++++++++++++++ 3 files changed, 27 insertions(+)