2 * netlink/handlers.c default netlink message handlers
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
9 * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
12 #ifndef NETLINK_HANDLERS_H_
13 #define NETLINK_HANDLERS_H_
17 #include <sys/types.h>
18 #include <netlink/netlink-compat.h>
19 #include <netlink/netlink-kernel.h>
31 * @name Callback Typedefs
36 * nl_recvmsgs() callback for message processing customization
38 * @arg msg netlink message being processed
39 * @arg arg argument passwd on through caller
41 typedef int (*nl_recvmsg_msg_cb_t)(struct nl_msg *msg, void *arg);
44 * nl_recvmsgs() callback for error message processing customization
46 * @arg nla netlink address of the peer
47 * @arg nlerr netlink error message being processed
48 * @arg arg argument passed on through caller
50 typedef int (*nl_recvmsg_err_cb_t)(struct sockaddr_nl *nla,
51 struct nlmsgerr *nlerr, void *arg);
60 /** Proceed with wathever would come next */
62 /** Skip this message */
64 /** Stop parsing altogether and discard remaining messages */
73 /** Default handlers (quiet) */
75 /** Verbose default handlers (error messages printed) */
77 /** Debug handlers for debugging */
79 /** Customized handler specified by the user */
84 #define NL_CB_KIND_MAX (__NL_CB_KIND_MAX - 1)
91 /** Message is valid */
93 /** Last message in a series of multi part messages received */
95 /** Report received that data was lost */
97 /** Message wants to be skipped */
99 /** Message is an acknowledge */
101 /** Called for every message received */
103 /** Called for every message sent out except for nl_sendto() */
105 /** Message is malformed and invalid */
107 /** Called instead of internal sequence number checking */
109 /** Sending of an acknowledge message has been requested */
114 #define NL_CB_TYPE_MAX (__NL_CB_TYPE_MAX - 1)
116 extern struct nl_cb * nl_cb_alloc(enum nl_cb_kind);
117 extern struct nl_cb * nl_cb_clone(struct nl_cb *);
118 extern struct nl_cb * nl_cb_get(struct nl_cb *);
119 extern void nl_cb_put(struct nl_cb *);
121 extern int nl_cb_set(struct nl_cb *, enum nl_cb_type, enum nl_cb_kind,
122 nl_recvmsg_msg_cb_t, void *);
123 extern int nl_cb_set_all(struct nl_cb *, enum nl_cb_kind,
124 nl_recvmsg_msg_cb_t, void *);
125 extern int nl_cb_err(struct nl_cb *, enum nl_cb_kind, nl_recvmsg_err_cb_t,
128 extern void nl_cb_overwrite_recvmsgs(struct nl_cb *,
129 int (*func)(struct nl_sock *,
131 extern void nl_cb_overwrite_recv(struct nl_cb *,
132 int (*func)(struct nl_sock *,
133 struct sockaddr_nl *,
136 extern void nl_cb_overwrite_send(struct nl_cb *,
137 int (*func)(struct nl_sock *,