1*4dc78e53SAndroid Build Coastguard Worker /* SPDX-License-Identifier: LGPL-2.1-only */
2*4dc78e53SAndroid Build Coastguard Worker /*
3*4dc78e53SAndroid Build Coastguard Worker * Copyright (c) 2014 Thomas Graf <[email protected]>
4*4dc78e53SAndroid Build Coastguard Worker */
5*4dc78e53SAndroid Build Coastguard Worker
6*4dc78e53SAndroid Build Coastguard Worker #ifndef __LIB_NL_CORE_H__
7*4dc78e53SAndroid Build Coastguard Worker #define __LIB_NL_CORE_H__
8*4dc78e53SAndroid Build Coastguard Worker
9*4dc78e53SAndroid Build Coastguard Worker struct nl_cb
10*4dc78e53SAndroid Build Coastguard Worker {
11*4dc78e53SAndroid Build Coastguard Worker nl_recvmsg_msg_cb_t cb_set[NL_CB_TYPE_MAX+1];
12*4dc78e53SAndroid Build Coastguard Worker void * cb_args[NL_CB_TYPE_MAX+1];
13*4dc78e53SAndroid Build Coastguard Worker
14*4dc78e53SAndroid Build Coastguard Worker nl_recvmsg_err_cb_t cb_err;
15*4dc78e53SAndroid Build Coastguard Worker void * cb_err_arg;
16*4dc78e53SAndroid Build Coastguard Worker
17*4dc78e53SAndroid Build Coastguard Worker /** May be used to replace nl_recvmsgs with your own implementation
18*4dc78e53SAndroid Build Coastguard Worker * in all internal calls to nl_recvmsgs. */
19*4dc78e53SAndroid Build Coastguard Worker int (*cb_recvmsgs_ow)(struct nl_sock *,
20*4dc78e53SAndroid Build Coastguard Worker struct nl_cb *);
21*4dc78e53SAndroid Build Coastguard Worker
22*4dc78e53SAndroid Build Coastguard Worker /** Overwrite internal calls to nl_recv, must return the number of
23*4dc78e53SAndroid Build Coastguard Worker * octets read and allocate a buffer for the received data. */
24*4dc78e53SAndroid Build Coastguard Worker int (*cb_recv_ow)(struct nl_sock *,
25*4dc78e53SAndroid Build Coastguard Worker struct sockaddr_nl *,
26*4dc78e53SAndroid Build Coastguard Worker unsigned char **,
27*4dc78e53SAndroid Build Coastguard Worker struct ucred **);
28*4dc78e53SAndroid Build Coastguard Worker
29*4dc78e53SAndroid Build Coastguard Worker /** Overwrites internal calls to nl_send, must send the netlink
30*4dc78e53SAndroid Build Coastguard Worker * message. */
31*4dc78e53SAndroid Build Coastguard Worker int (*cb_send_ow)(struct nl_sock *,
32*4dc78e53SAndroid Build Coastguard Worker struct nl_msg *);
33*4dc78e53SAndroid Build Coastguard Worker
34*4dc78e53SAndroid Build Coastguard Worker int cb_refcnt;
35*4dc78e53SAndroid Build Coastguard Worker /** indicates the callback that is currently active */
36*4dc78e53SAndroid Build Coastguard Worker enum nl_cb_type cb_active;
37*4dc78e53SAndroid Build Coastguard Worker };
38*4dc78e53SAndroid Build Coastguard Worker
nl_cb_call(struct nl_cb * cb,enum nl_cb_type type,struct nl_msg * msg)39*4dc78e53SAndroid Build Coastguard Worker static inline int nl_cb_call(struct nl_cb *cb, enum nl_cb_type type, struct nl_msg *msg)
40*4dc78e53SAndroid Build Coastguard Worker {
41*4dc78e53SAndroid Build Coastguard Worker int ret;
42*4dc78e53SAndroid Build Coastguard Worker
43*4dc78e53SAndroid Build Coastguard Worker cb->cb_active = type;
44*4dc78e53SAndroid Build Coastguard Worker ret = cb->cb_set[type](msg, cb->cb_args[type]);
45*4dc78e53SAndroid Build Coastguard Worker cb->cb_active = __NL_CB_TYPE_MAX;
46*4dc78e53SAndroid Build Coastguard Worker return ret;
47*4dc78e53SAndroid Build Coastguard Worker }
48*4dc78e53SAndroid Build Coastguard Worker
49*4dc78e53SAndroid Build Coastguard Worker int _nl_socket_is_local_port_unspecified (struct nl_sock *sk);
50*4dc78e53SAndroid Build Coastguard Worker uint32_t _nl_socket_set_local_port_no_release(struct nl_sock *sk, int generate_other);
51*4dc78e53SAndroid Build Coastguard Worker
52*4dc78e53SAndroid Build Coastguard Worker void _nl_socket_used_ports_release_all(const uint32_t *used_ports);
53*4dc78e53SAndroid Build Coastguard Worker void _nl_socket_used_ports_set(uint32_t *used_ports, uint32_t port);
54*4dc78e53SAndroid Build Coastguard Worker
55*4dc78e53SAndroid Build Coastguard Worker extern int nl_cache_parse(struct nl_cache_ops *, struct sockaddr_nl *,
56*4dc78e53SAndroid Build Coastguard Worker struct nlmsghdr *, struct nl_parser_param *);
57*4dc78e53SAndroid Build Coastguard Worker
58*4dc78e53SAndroid Build Coastguard Worker extern void dump_from_ops(struct nl_object *, struct nl_dump_params *);
59*4dc78e53SAndroid Build Coastguard Worker
60*4dc78e53SAndroid Build Coastguard Worker #endif /* __LIB_NL_CORE_H__ */
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