[mirror_frr.git] / nhrpd / znl.h

// SPDX-License-Identifier: GPL-2.0-or-later
/* Netlink helpers for zbuf
 * Copyright (c) 2014-2015 Timo Teräs
 */

#include "zbuf.h"

#define ZNL_BUFFER_SIZE		8192

void *znl_push(struct zbuf *zb, size_t n);
void *znl_pull(struct zbuf *zb, size_t n);

struct nlmsghdr *znl_nlmsg_push(struct zbuf *zb, uint16_t type, uint16_t flags);
void znl_nlmsg_complete(struct zbuf *zb, struct nlmsghdr *n);
struct nlmsghdr *znl_nlmsg_pull(struct zbuf *zb, struct zbuf *payload);

struct rtattr *znl_rta_push(struct zbuf *zb, uint16_t type, const void *val,
			    size_t len);
struct rtattr *znl_rta_push_u32(struct zbuf *zb, uint16_t type, uint32_t val);
struct rtattr *znl_rta_nested_push(struct zbuf *zb, uint16_t type);
void znl_rta_nested_complete(struct zbuf *zb, struct rtattr *rta);

struct rtattr *znl_rta_pull(struct zbuf *zb, struct zbuf *payload);

int znl_open(int protocol, int groups);
Commit	Line	Data
acddc0ed	1	// SPDX-License-Identifier: GPL-2.0-or-later
2fb975da TT	2	/* Netlink helpers for zbuf
2fb975da TT	3	* Copyright (c) 2014-2015 Timo Teräs
2fb975da TT	4	*/
	5
	6	#include "zbuf.h"
	7
	8	#define ZNL_BUFFER_SIZE 8192
	9
	10	void znl_push(struct zbuf zb, size_t n);
	11	void znl_pull(struct zbuf zb, size_t n);
	12
	13	struct nlmsghdr znl_nlmsg_push(struct zbuf zb, uint16_t type, uint16_t flags);
	14	void znl_nlmsg_complete(struct zbuf zb, struct nlmsghdr n);
	15	struct nlmsghdr znl_nlmsg_pull(struct zbuf zb, struct zbuf *payload);
	16
996c9314 LB	17	struct rtattr znl_rta_push(struct zbuf zb, uint16_t type, const void *val,
996c9314 LB	18	size_t len);
2fb975da TT	19	struct rtattr znl_rta_push_u32(struct zbuf zb, uint16_t type, uint32_t val);
	20	struct rtattr znl_rta_nested_push(struct zbuf zb, uint16_t type);
	21	void znl_rta_nested_complete(struct zbuf zb, struct rtattr rta);
	22
	23	struct rtattr znl_rta_pull(struct zbuf zb, struct zbuf *payload);
	24
	25	int znl_open(int protocol, int groups);