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#ifndef _LIBNFTNL_UDATA_INTERNAL_H_
#define _LIBNFTNL_UDATA_INTERNAL_H_
#include <stdint.h>
#include <stddef.h>
/*
* TLV structures:
* nftnl_udata
* <-------- HEADER --------> <------ PAYLOAD ------>
* +------------+-------------+- - - - - - - - - - - -+
* | type | len | value |
* | (1 byte) | (1 byte) | |
* +--------------------------+- - - - - - - - - - - -+
* <-- sizeof(nftnl_udata) -> <-- nftnl_udata->len -->
*/
struct nftnl_udata {
uint8_t type;
uint8_t len;
unsigned char value[];
} __attribute__((__packed__));
/*
* +---------------------------------++
* | data[] ||
* | || ||
* | \/ \/
* +-------+-------+-------+-------+ ... +-------+- - - - - - -+
* | size | end | TLV | TLV | | TLV | Empty |
* +-------+-------+-------+-------+ ... +-------+- - - - - - -+
* |<---- nftnl_udata_len() ---->|
* |<----------- nftnl_udata_size() ---------->|
*/
struct nftnl_udata_buf {
uint32_t size;
char *end;
char data[];
};
#endif /* _LIBNFTNL_UDATA_INTERNAL_H_ */
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