proto.h

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #ifndef __NETIFD_PROTO_H
  15 #define __NETIFD_PROTO_H
  16
  17 struct interface;
  18 struct interface_proto_state;
  19 struct proto_handler;
  20
  21 enum interface_proto_event {
  22         IFPEV_UP,
  23         IFPEV_DOWN,
  24         IFPEV_LINK_LOST,
  25         IFPEV_RENEW,
  26 };
  27
  28 enum interface_proto_cmd {
  29         PROTO_CMD_SETUP,
  30         PROTO_CMD_TEARDOWN,
  31         PROTO_CMD_RENEW,
  32 };
  33
  34 enum {
  35         PROTO_FLAG_IMMEDIATE = (1 << 0),
  36         PROTO_FLAG_NODEV = (1 << 1),
  37         PROTO_FLAG_INIT_AVAILABLE = (1 << 2),
  38         PROTO_FLAG_RENEW_AVAILABLE = (1 << 3),
  39         PROTO_FLAG_FORCE_LINK_DEFAULT = (1 << 4),
  40         PROTO_FLAG_LASTERROR = (1 << 5),
  41         PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN = (1 << 6),
  42         PROTO_FLAG_NO_TASK = (1 << 7),
  43 };
  44
  45 struct interface_proto_state {
  46         const struct proto_handler *handler;
  47         struct interface *iface;
  48
  49         /* filled in by the protocol user */
  50         void (*proto_event)(struct interface_proto_state *, enum interface_proto_event ev);
  51
  52         /* filled in by the protocol handler */
  53         int (*notify)(struct interface_proto_state *, struct blob_attr *data);
  54         int (*cb)(struct interface_proto_state *, enum interface_proto_cmd cmd, bool force);
  55         void (*free)(struct interface_proto_state *);
  56 };
  57
  58
  59 struct proto_handler {
  60         struct avl_node avl;
  61
  62         unsigned int flags;
  63
  64         const char *name;
  65         const struct uci_blob_param_list *config_params;
  66
  67         struct interface_proto_state *(*attach)(const struct proto_handler *h,
  68                 struct interface *iface, struct blob_attr *attr);
  69 };
  70
  71 extern const struct uci_blob_param_list proto_ip_attr;
  72
  73 void add_proto_handler(struct proto_handler *p);
  74 void proto_init_interface(struct interface *iface, struct blob_attr *attr);
  75 void proto_attach_interface(struct interface *iface, const char *proto_name);
  76 int interface_proto_event(struct interface_proto_state *proto,
  77                           enum interface_proto_cmd cmd, bool force);
  78
  79 unsigned int parse_netmask_string(const char *str, bool v6);
  80 int proto_apply_static_ip_settings(struct interface *iface, struct blob_attr *attr);
  81 int proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext);
  82 void proto_dump_handlers(struct blob_buf *b);
  83 void proto_shell_init(void);
  84
  85 #endif