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c35af0617a
- make "debug.h" a private header so that the DEBUG() macro does not interfere with Xcode Debug builds, which set DEBUG=1 - move all #include "debug.h" from headers into .c files - move 'struct idebug' into a new public header "idebug.h" so that "log.h" can be public - move HTTPD port number defs from "httpd.h" to "constants.h", so that "httpd.h" can be private and "conf.h" can be public - add missing nested includes so each header compiles stand-alone without error - #include "sodium.h" instead of <sodium.h> - #include "sqlite3.h" instead of <sqlite3.h> - add header guard to "fifo.h" - fix header guard in "sync_keys.h"
143 lines
4.8 KiB
C
143 lines
4.8 KiB
C
/*
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Serval DNA overlay network interfaces
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Copyright (C) 2010 Paul Gardner-Stephen
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Copyright (C) 2012-2013 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __SERVAL_DNA__OVERLAY_INTERFACE_H
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#define __SERVAL_DNA__OVERLAY_INTERFACE_H
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#include "os.h" // for time_ms_t
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#include "socket.h"
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#include "limit.h"
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#define INTERFACE_STATE_DOWN 0
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#define INTERFACE_STATE_UP 1
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struct overlay_interface;
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// where should packets be sent to?
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struct network_destination {
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int _ref_count;
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// which interface are we actually sending packets out of
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struct overlay_interface *interface;
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// The network destination address
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// this may be the interface broadcast IP address
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// but could be a unicast address
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struct socket_address address;
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// should outgoing packets be marked as unicast?
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char unicast;
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char packet_version;
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struct config_mdp_iftype ifconfig;
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// time last packet was sent
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time_ms_t last_tx;
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int min_rtt;
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int max_rtt;
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int resend_delay;
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// sequence number of last packet sent to this destination.
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// Used to allow NACKs that can request retransmission of recent packets.
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int sequence_number;
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int last_ack_seq;
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// rate limit for outgoing packets
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struct limit_state transfer_limit;
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};
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typedef struct overlay_interface {
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struct sched_ent alarm;
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char name[256];
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short detected_type;
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off_t recv_offset; /* file offset */
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int recv_count;
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int tx_count;
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struct radio_link_state *radio_link_state;
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struct config_network_interface ifconfig;
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char local_echo;
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struct network_destination *destination;
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struct subscriber *other_device;
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// the actual address of the interface.
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struct socket_address address;
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struct in_addr netmask;
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/* Use one of the INTERFACE_STATE_* constants to indicate the state of this interface.
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If the interface stops working or disappears, it will be marked as DOWN and the socket closed.
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But if it comes back up again, we should try to reuse this structure, even if the broadcast address has changed.
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*/
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int state;
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} overlay_interface;
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/* Maximum interface count is rather arbitrary.
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Memory consumption is O(n) with respect to this parameter, so let's not make it too big for now.
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*/
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extern overlay_interface overlay_interfaces[OVERLAY_MAX_INTERFACES];
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struct network_destination * new_destination(struct overlay_interface *interface);
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struct network_destination * create_unicast_destination(struct socket_address *addr, struct overlay_interface *interface);
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struct network_destination * add_destination_ref(struct network_destination *ref);
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void release_destination_ref(struct network_destination *ref);
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int set_destination_ref(struct network_destination **ptr, struct network_destination *ref);
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void overlay_interface_config_change();
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struct config_mdp_iftype;
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int overlay_destination_configure(struct network_destination *dest, const struct config_mdp_iftype *ifconfig);
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struct config_network_interface;
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int overlay_interface_configure(struct overlay_interface *interface, const struct config_network_interface *ifconfig);
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int
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overlay_interface_init(const char *name,
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short detected_type,
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const struct socket_address *addr,
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const struct socket_address *netmask,
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const struct socket_address *broadcast,
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const struct config_network_interface *ifconfig);
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void overlay_interface_close(overlay_interface *interface);
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int overlay_interface_register(const char *name,
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struct socket_address *addr,
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const struct socket_address *netmask,
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struct socket_address *broadcast);
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overlay_interface * overlay_interface_get_default();
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overlay_interface * overlay_interface_find(struct in_addr addr, int return_default);
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overlay_interface * overlay_interface_find_name_addr(const char *name, struct socket_address *addr);
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int overlay_interface_compare(overlay_interface *one, overlay_interface *two);
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int overlay_broadcast_ensemble(struct network_destination *destination, struct overlay_buffer *buffer);
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void interface_state_html(struct strbuf *b, struct overlay_interface *interface);
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void overlay_interface_monitor_up();
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DECLARE_TRIGGER(iupdown, struct overlay_interface *, unsigned count);
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#endif // __SERVAL_DNA__OVERLAY_INTERFACE_H
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