diff options
Diffstat (limited to 'include/libnftnl/udata.h')
-rw-r--r-- | include/libnftnl/udata.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/libnftnl/udata.h b/include/libnftnl/udata.h new file mode 100644 index 0000000..312ce26 --- /dev/null +++ b/include/libnftnl/udata.h @@ -0,0 +1,52 @@ +#ifndef _LIBNFTNL_UDATA_H_ +#define _LIBNFTNL_UDATA_H_ + +#include <stdio.h> +#include <stdint.h> +#include <stdbool.h> + +/* + * nftnl user data attributes API + */ +struct nftnl_udata; +struct nftnl_udata_buf; + +/* nftnl_udata_buf */ +struct nftnl_udata_buf *nftnl_udata_buf_alloc(uint32_t data_size); +void nftnl_udata_buf_free(struct nftnl_udata_buf *buf); +uint32_t nftnl_udata_buf_len(const struct nftnl_udata_buf *buf); +void *nftnl_udata_buf_data(const struct nftnl_udata_buf *buf); +void nftnl_udata_buf_put(struct nftnl_udata_buf *buf, const void *data, + uint32_t len); +struct nftnl_udata *nftnl_udata_start(const struct nftnl_udata_buf *buf); +struct nftnl_udata *nftnl_udata_end(const struct nftnl_udata_buf *buf); + +/* putters */ +bool nftnl_udata_put(struct nftnl_udata_buf *buf, uint8_t type, uint32_t len, + const void *value); +bool nftnl_udata_put_strz(struct nftnl_udata_buf *buf, uint8_t type, + const char *strz); + +/* nftnl_udata_attr */ +uint8_t nftnl_udata_type(const struct nftnl_udata *attr); +uint8_t nftnl_udata_len(const struct nftnl_udata *attr); +void *nftnl_udata_get(const struct nftnl_udata *attr); + +/* iterator */ +struct nftnl_udata *nftnl_udata_next(const struct nftnl_udata *attr); + +#define nftnl_udata_for_each(buf, attr) \ + for ((attr) = nftnl_udata_start(buf); \ + (char *)(nftnl_udata_end(buf)) > (char *)(attr); \ + (attr) = nftnl_udata_next(attr)) + +#define nftnl_udata_for_each_data(data, data_len, attr) \ + for ((attr) = (struct nftnl_udata *)(data); \ + (char *)(data + data_len) > (char *)(attr); \ + (attr) = nftnl_udata_next(attr)) + +typedef int (*nftnl_udata_cb_t)(const struct nftnl_udata *attr, void *data); +int nftnl_udata_parse(const void *data, uint32_t data_len, nftnl_udata_cb_t cb, + void *cb_data); + +#endif /* _LIBNFTNL_UDATA_H_ */ |