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/* SPDX-License-Identifier: LGPL-2.1-only */
/*
* Copyright (c) 2014 Thomas Graf <tgraf@suug.ch>
*/
#ifndef __LIB_NL_CORE_H__
#define __LIB_NL_CORE_H__
struct nl_cb
{
nl_recvmsg_msg_cb_t cb_set[NL_CB_TYPE_MAX+1];
void * cb_args[NL_CB_TYPE_MAX+1];
nl_recvmsg_err_cb_t cb_err;
void * cb_err_arg;
/** May be used to replace nl_recvmsgs with your own implementation
* in all internal calls to nl_recvmsgs. */
int (*cb_recvmsgs_ow)(struct nl_sock *,
struct nl_cb *);
/** Overwrite internal calls to nl_recv, must return the number of
* octets read and allocate a buffer for the received data. */
int (*cb_recv_ow)(struct nl_sock *,
struct sockaddr_nl *,
unsigned char **,
struct ucred **);
/** Overwrites internal calls to nl_send, must send the netlink
* message. */
int (*cb_send_ow)(struct nl_sock *,
struct nl_msg *);
int cb_refcnt;
/** indicates the callback that is currently active */
enum nl_cb_type cb_active;
};
static inline int nl_cb_call(struct nl_cb *cb, enum nl_cb_type type, struct nl_msg *msg)
{
int ret;
cb->cb_active = type;
ret = cb->cb_set[type](msg, cb->cb_args[type]);
cb->cb_active = __NL_CB_TYPE_MAX;
return ret;
}
int _nl_socket_is_local_port_unspecified (struct nl_sock *sk);
uint32_t _nl_socket_set_local_port_no_release(struct nl_sock *sk, int generate_other);
void _nl_socket_used_ports_release_all(const uint32_t *used_ports);
void _nl_socket_used_ports_set(uint32_t *used_ports, uint32_t port);
extern int nl_cache_parse(struct nl_cache_ops *, struct sockaddr_nl *,
struct nlmsghdr *, struct nl_parser_param *);
extern void dump_from_ops(struct nl_object *, struct nl_dump_params *);
#endif /* __LIB_NL_CORE_H__ */
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