2015-12-31 23:01:03 +00:00
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/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
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2010-12-13 11:19:28 +00:00
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*
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* Marek Lindner, Simon Wunderlich
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*
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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 version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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2013-11-03 19:40:48 +00:00
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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2010-12-13 11:19:28 +00:00
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*/
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#ifndef _NET_BATMAN_ADV_MAIN_H_
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#define _NET_BATMAN_ADV_MAIN_H_
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2013-10-12 14:10:03 +00:00
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#define BATADV_DRIVER_AUTHOR "Marek Lindner <mareklindner@neomailbox.ch>, " \
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2013-10-10 21:59:10 +00:00
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"Simon Wunderlich <sw@simonwunderlich.de>"
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2012-06-03 20:19:17 +00:00
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#define BATADV_DRIVER_DESC "B.A.T.M.A.N. advanced"
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#define BATADV_DRIVER_DEVICE "batman-adv"
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2010-12-13 11:19:28 +00:00
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2012-06-03 20:19:17 +00:00
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#ifndef BATADV_SOURCE_VERSION
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2016-08-09 05:50:46 +00:00
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#define BATADV_SOURCE_VERSION "2016.4"
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2011-07-05 08:42:51 +00:00
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#endif
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2010-12-13 11:19:28 +00:00
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/* B.A.T.M.A.N. parameters */
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2012-06-03 20:19:17 +00:00
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#define BATADV_TQ_MAX_VALUE 255
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2016-01-16 08:40:12 +00:00
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#define BATADV_THROUGHPUT_MAX_VALUE 0xFFFFFFFF
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2012-06-03 20:19:17 +00:00
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#define BATADV_JITTER 20
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2010-12-13 11:19:28 +00:00
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2012-05-12 00:09:43 +00:00
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/* Time To Live of broadcast messages */
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2012-06-03 20:19:17 +00:00
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#define BATADV_TTL 50
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2011-05-08 10:45:45 +00:00
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2015-11-23 18:57:22 +00:00
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/* maximum sequence number age of broadcast messages */
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#define BATADV_BCAST_MAX_AGE 64
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2011-05-08 10:45:45 +00:00
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/* purge originators after time in seconds if no valid packet comes in
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2012-06-03 20:19:17 +00:00
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* -> TODO: check influence on BATADV_TQ_LOCAL_WINDOW_SIZE
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2012-05-12 00:09:43 +00:00
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*/
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2012-06-03 20:19:17 +00:00
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#define BATADV_PURGE_TIMEOUT 200000 /* 200 seconds */
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2012-11-08 21:16:15 +00:00
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#define BATADV_TT_LOCAL_TIMEOUT 600000 /* in milliseconds */
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2012-07-01 17:07:31 +00:00
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#define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000 /* in milliseconds */
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2012-07-05 21:38:29 +00:00
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#define BATADV_TT_CLIENT_TEMP_TIMEOUT 600000 /* in milliseconds */
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2012-12-25 12:14:37 +00:00
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#define BATADV_TT_WORK_PERIOD 5000 /* 5 seconds */
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#define BATADV_ORIG_WORK_PERIOD 1000 /* 1 second */
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2015-02-18 14:19:20 +00:00
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#define BATADV_DAT_ENTRY_TIMEOUT (5 * 60000) /* 5 mins in milliseconds */
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2011-07-09 15:52:13 +00:00
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/* sliding packet range of received originator messages in sequence numbers
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2012-05-12 00:09:43 +00:00
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* (should be a multiple of our word size)
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*/
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2012-06-03 20:19:17 +00:00
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#define BATADV_TQ_LOCAL_WINDOW_SIZE 64
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2012-07-01 17:07:31 +00:00
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/* milliseconds we have to keep pending tt_req */
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2012-06-03 20:19:17 +00:00
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#define BATADV_TT_REQUEST_TIMEOUT 3000
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2011-04-27 12:27:44 +00:00
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2012-06-03 20:19:17 +00:00
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#define BATADV_TQ_GLOBAL_WINDOW_SIZE 5
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#define BATADV_TQ_LOCAL_BIDRECT_SEND_MINIMUM 1
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#define BATADV_TQ_LOCAL_BIDRECT_RECV_MINIMUM 1
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#define BATADV_TQ_TOTAL_BIDRECT_LIMIT 1
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2010-12-13 11:19:28 +00:00
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2016-01-16 08:40:10 +00:00
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/* B.A.T.M.A.N. V */
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2015-11-10 17:50:51 +00:00
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#define BATADV_THROUGHPUT_DEFAULT_VALUE 10 /* 1 Mbps */
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2015-11-10 17:51:22 +00:00
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#define BATADV_ELP_PROBES_PER_NODE 2
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#define BATADV_ELP_MIN_PROBE_SIZE 200 /* bytes */
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#define BATADV_ELP_PROBE_MAX_TX_DIFF 100 /* milliseconds */
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2016-01-16 08:40:10 +00:00
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#define BATADV_ELP_MAX_AGE 64
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2016-01-16 08:40:13 +00:00
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#define BATADV_OGM_MAX_ORIGDIFF 5
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#define BATADV_OGM_MAX_AGE 64
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2016-01-16 08:40:10 +00:00
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2012-06-03 20:19:17 +00:00
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/* number of OGMs sent with the last tt diff */
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#define BATADV_TT_OGM_APPEND_MAX 3
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2011-04-27 12:27:44 +00:00
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2012-05-12 00:09:43 +00:00
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/* Time in which a client can roam at most ROAMING_MAX_COUNT times in
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2012-07-01 17:07:31 +00:00
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* milliseconds
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2012-05-12 00:09:43 +00:00
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*/
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2012-06-03 20:19:17 +00:00
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#define BATADV_ROAMING_MAX_TIME 20000
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#define BATADV_ROAMING_MAX_COUNT 5
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2011-04-27 12:27:57 +00:00
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2012-06-03 20:19:17 +00:00
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#define BATADV_NO_FLAGS 0
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2011-06-09 15:13:09 +00:00
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2012-06-03 20:19:17 +00:00
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#define BATADV_NULL_IFINDEX 0 /* dummy ifindex used to avoid iface checks */
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2011-07-07 13:35:35 +00:00
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2013-11-16 11:03:48 +00:00
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#define BATADV_NO_MARK 0
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2013-11-13 18:14:46 +00:00
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/* default interface for multi interface operation. The default interface is
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* used for communication which originated locally (i.e. is not forwarded)
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* or where special forwarding is not desired/necessary.
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*/
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#define BATADV_IF_DEFAULT ((struct batadv_hard_iface *)NULL)
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2012-06-03 20:19:17 +00:00
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#define BATADV_NUM_WORDS BITS_TO_LONGS(BATADV_TQ_LOCAL_WINDOW_SIZE)
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2010-12-13 11:19:28 +00:00
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2012-06-03 20:19:17 +00:00
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#define BATADV_LOG_BUF_LEN 8192 /* has to be a power of 2 */
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2010-12-13 11:19:28 +00:00
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2013-03-09 22:14:23 +00:00
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/* number of packets to send for broadcasts on different interface types */
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#define BATADV_NUM_BCASTS_DEFAULT 1
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#define BATADV_NUM_BCASTS_WIRELESS 3
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#define BATADV_NUM_BCASTS_MAX 3
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2016-05-05 11:09:43 +00:00
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/* length of the single packet used by the TP meter */
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#define BATADV_TP_PACKET_LEN ETH_DATA_LEN
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2011-06-26 01:37:18 +00:00
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/* msecs after which an ARP_REQUEST is sent in broadcast as fallback */
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#define ARP_REQ_DELAY 250
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2011-11-23 10:35:44 +00:00
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/* numbers of originator to contact for any PUT/GET DHT operation */
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#define BATADV_DAT_CANDIDATES_NUM 3
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2014-07-15 07:41:08 +00:00
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/* BATADV_TQ_SIMILARITY_THRESHOLD - TQ points that a secondary metric can differ
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* at most from the primary one in order to be still considered acceptable
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2013-09-02 10:15:05 +00:00
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*/
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#define BATADV_TQ_SIMILARITY_THRESHOLD 50
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2011-05-08 10:45:45 +00:00
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/* should not be bigger than 512 bytes or change the size of
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2012-05-12 00:09:43 +00:00
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* forw_packet->direct_link_flags
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*/
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2012-06-03 20:19:17 +00:00
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#define BATADV_MAX_AGGREGATION_BYTES 512
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#define BATADV_MAX_AGGREGATION_MS 100
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2010-12-13 11:19:28 +00:00
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2012-06-03 20:19:17 +00:00
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#define BATADV_BLA_PERIOD_LENGTH 10000 /* 10 seconds */
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2015-11-09 15:20:53 +00:00
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#define BATADV_BLA_BACKBONE_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 6)
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2012-06-03 20:19:17 +00:00
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#define BATADV_BLA_CLAIM_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 10)
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2012-09-13 16:18:46 +00:00
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#define BATADV_BLA_WAIT_PERIODS 3
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2016-03-12 09:49:33 +00:00
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#define BATADV_BLA_LOOPDETECT_PERIODS 6
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#define BATADV_BLA_LOOPDETECT_TIMEOUT 3000 /* 3 seconds */
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2012-01-22 19:00:24 +00:00
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2012-06-03 20:19:17 +00:00
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#define BATADV_DUPLIST_SIZE 16
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#define BATADV_DUPLIST_TIMEOUT 500 /* 500 ms */
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2011-05-08 10:45:45 +00:00
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/* don't reset again within 30 seconds */
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2012-06-03 20:19:17 +00:00
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#define BATADV_RESET_PROTECTION_MS 30000
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#define BATADV_EXPECTED_SEQNO_RANGE 65536
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2010-12-13 11:19:28 +00:00
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2013-01-25 10:12:39 +00:00
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#define BATADV_NC_NODE_TIMEOUT 10000 /* Milliseconds */
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2016-05-05 11:09:43 +00:00
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/**
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* BATADV_TP_MAX_NUM - maximum number of simultaneously active tp sessions
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*/
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#define BATADV_TP_MAX_NUM 5
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2012-06-03 20:19:22 +00:00
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enum batadv_mesh_state {
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BATADV_MESH_INACTIVE,
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BATADV_MESH_ACTIVE,
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BATADV_MESH_DEACTIVATING,
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2011-06-04 09:26:00 +00:00
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};
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2010-12-13 11:19:28 +00:00
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2012-06-03 20:19:17 +00:00
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#define BATADV_BCAST_QUEUE_LEN 256
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#define BATADV_BATMAN_QUEUE_LEN 256
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2010-12-13 11:19:28 +00:00
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2012-06-03 20:19:22 +00:00
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enum batadv_uev_action {
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BATADV_UEV_ADD = 0,
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BATADV_UEV_DEL,
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BATADV_UEV_CHANGE,
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2016-03-12 09:49:33 +00:00
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BATADV_UEV_LOOPDETECT,
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2011-04-26 16:26:01 +00:00
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};
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2012-06-03 20:19:22 +00:00
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enum batadv_uev_type {
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BATADV_UEV_GW = 0,
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2016-03-12 09:49:33 +00:00
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BATADV_UEV_BLA,
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2011-04-26 16:26:01 +00:00
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};
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2012-06-03 20:19:17 +00:00
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#define BATADV_GW_THRESHOLD 50
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2011-04-26 19:31:45 +00:00
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2013-05-23 14:53:02 +00:00
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/* Number of fragment chains for each orig_node */
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#define BATADV_FRAG_BUFFER_COUNT 8
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/* Maximum number of fragments for one packet */
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#define BATADV_FRAG_MAX_FRAGMENTS 16
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/* Maxumim size of each fragment */
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#define BATADV_FRAG_MAX_FRAG_SIZE 1400
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/* Time to keep fragments while waiting for rest of the fragments */
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#define BATADV_FRAG_TIMEOUT 10000
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2011-11-23 10:35:44 +00:00
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#define BATADV_DAT_CANDIDATE_NOT_FOUND 0
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#define BATADV_DAT_CANDIDATE_ORIG 1
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2012-03-07 08:07:46 +00:00
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/* Debug Messages */
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2010-12-13 11:19:28 +00:00
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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2011-05-08 10:45:45 +00:00
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/* Append 'batman-adv: ' before kernel messages */
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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2010-12-13 11:19:28 +00:00
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2012-03-07 08:07:46 +00:00
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/* Kernel headers */
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2010-12-13 11:19:28 +00:00
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2015-04-17 17:40:28 +00:00
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#include <linux/bitops.h> /* for packet.h */
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#include <linux/compiler.h>
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#include <linux/cpumask.h>
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#include <linux/etherdevice.h>
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#include <linux/if_ether.h> /* for packet.h */
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2016-05-15 09:07:42 +00:00
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#include <linux/if_vlan.h>
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#include <linux/jiffies.h>
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#include <linux/percpu.h>
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2015-04-17 17:40:28 +00:00
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#include <linux/types.h>
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2013-06-04 10:11:41 +00:00
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2010-12-13 11:19:28 +00:00
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#include "types.h"
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2016-05-15 21:48:31 +00:00
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struct net_device;
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struct packet_type;
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2015-04-17 17:40:28 +00:00
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struct seq_file;
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struct sk_buff;
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2015-04-23 16:22:24 +00:00
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#define BATADV_PRINT_VID(vid) ((vid & BATADV_VLAN_HAS_TAG) ? \
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2013-04-19 16:07:00 +00:00
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(int)(vid & VLAN_VID_MASK) : -1)
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2012-05-12 00:09:42 +00:00
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extern struct list_head batadv_hardif_list;
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extern unsigned char batadv_broadcast_addr[];
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extern struct workqueue_struct *batadv_event_workqueue;
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int batadv_mesh_init(struct net_device *soft_iface);
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void batadv_mesh_free(struct net_device *soft_iface);
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2015-05-26 16:34:26 +00:00
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bool batadv_is_my_mac(struct batadv_priv *bat_priv, const u8 *addr);
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2012-08-03 15:15:46 +00:00
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struct batadv_hard_iface *
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batadv_seq_print_text_primary_if_get(struct seq_file *seq);
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2013-05-08 05:31:59 +00:00
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int batadv_max_header_len(void);
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2013-07-29 15:56:44 +00:00
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void batadv_skb_set_priority(struct sk_buff *skb, int offset);
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2012-05-12 00:09:42 +00:00
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int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *ptype,
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struct net_device *orig_dev);
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2012-06-05 20:31:31 +00:00
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int
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2015-05-26 16:34:26 +00:00
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batadv_recv_handler_register(u8 packet_type,
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2012-06-05 20:31:31 +00:00
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int (*recv_handler)(struct sk_buff *,
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struct batadv_hard_iface *));
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2015-05-26 16:34:26 +00:00
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void batadv_recv_handler_unregister(u8 packet_type);
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2012-10-17 19:10:39 +00:00
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__be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr);
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2010-12-13 11:19:28 +00:00
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2015-09-15 17:00:48 +00:00
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/**
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* batadv_compare_eth - Compare two not u16 aligned Ethernet addresses
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2015-10-31 11:29:29 +00:00
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* @data1: Pointer to a six-byte array containing the Ethernet address
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* @data2: Pointer other six-byte array containing the Ethernet address
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2011-02-18 12:28:08 +00:00
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*
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2013-09-01 22:45:08 +00:00
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* note: can't use ether_addr_equal() as it requires aligned memory
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2015-09-15 17:00:48 +00:00
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*
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2016-02-22 20:02:39 +00:00
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* Return: true if they are the same ethernet addr
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2011-02-18 12:28:08 +00:00
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*/
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2014-12-26 11:41:39 +00:00
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static inline bool batadv_compare_eth(const void *data1, const void *data2)
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2011-02-18 12:28:08 +00:00
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{
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2013-12-06 22:39:46 +00:00
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return ether_addr_equal_unaligned(data1, data2);
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2011-02-18 12:28:08 +00:00
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}
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2012-07-10 10:55:09 +00:00
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/**
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2016-03-11 15:36:19 +00:00
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* batadv_has_timed_out - compares current time (jiffies) and timestamp +
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* timeout
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2011-12-08 12:32:41 +00:00
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* @timestamp: base value to compare with (in jiffies)
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* @timeout: added to base value before comparing (in milliseconds)
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*
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2015-09-15 17:00:48 +00:00
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* Return: true if current time is after timestamp + timeout
|
2011-12-08 12:32:41 +00:00
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|
*/
|
2012-05-12 11:48:58 +00:00
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static inline bool batadv_has_timed_out(unsigned long timestamp,
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unsigned int timeout)
|
2011-12-08 12:32:41 +00:00
|
|
|
{
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|
|
|
return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout));
|
|
|
|
}
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2011-05-14 21:14:50 +00:00
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2012-05-16 18:23:22 +00:00
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#define batadv_atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
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2011-04-20 07:52:56 +00:00
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2011-05-18 07:20:50 +00:00
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/* Returns the smallest signed integer in two's complement with the sizeof x */
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2012-05-16 18:23:22 +00:00
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#define batadv_smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
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2011-05-18 07:20:50 +00:00
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|
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|
|
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/* Checks if a sequence number x is a predecessor/successor of y.
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|
|
|
* they handle overflows/underflows and can correctly check for a
|
|
|
|
* predecessor/successor unless the variable sequence number has grown by
|
|
|
|
* more then 2**(bitwidth(x)-1)-1.
|
2015-05-26 16:34:26 +00:00
|
|
|
* This means that for a u8 with the maximum value 255, it would think:
|
2011-05-18 07:20:50 +00:00
|
|
|
* - when adding nothing - it is neither a predecessor nor a successor
|
|
|
|
* - before adding more than 127 to the starting value - it is a predecessor,
|
|
|
|
* - when adding 128 - it is neither a predecessor nor a successor,
|
2012-05-12 00:09:43 +00:00
|
|
|
* - after adding more than 127 to the starting value - it is a successor
|
|
|
|
*/
|
2014-09-01 12:37:26 +00:00
|
|
|
#define batadv_seq_before(x, y) ({typeof(x)_d1 = (x); \
|
|
|
|
typeof(y)_d2 = (y); \
|
|
|
|
typeof(x)_dummy = (_d1 - _d2); \
|
|
|
|
(void)(&_d1 == &_d2); \
|
2012-05-16 18:23:22 +00:00
|
|
|
_dummy > batadv_smallest_signed_int(_dummy); })
|
|
|
|
#define batadv_seq_after(x, y) batadv_seq_before(y, x)
|
2011-05-18 07:20:50 +00:00
|
|
|
|
2012-04-20 15:02:45 +00:00
|
|
|
/* Stop preemption on local cpu while incrementing the counter */
|
2012-06-05 20:31:31 +00:00
|
|
|
static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx,
|
2012-04-20 15:02:45 +00:00
|
|
|
size_t count)
|
|
|
|
{
|
2012-11-13 01:53:26 +00:00
|
|
|
this_cpu_add(bat_priv->bat_counters[idx], count);
|
2012-04-20 15:02:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1)
|
|
|
|
|
2015-09-15 17:00:48 +00:00
|
|
|
/**
|
|
|
|
* batadv_sum_counter - Sum the cpu-local counters for index 'idx'
|
2015-10-31 11:29:29 +00:00
|
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
|
|
* @idx: index of counter to sum up
|
2015-09-15 17:00:48 +00:00
|
|
|
*
|
|
|
|
* Return: sum of all cpu-local counters
|
|
|
|
*/
|
2015-05-26 16:34:26 +00:00
|
|
|
static inline u64 batadv_sum_counter(struct batadv_priv *bat_priv, size_t idx)
|
2012-04-20 15:02:45 +00:00
|
|
|
{
|
2015-05-26 16:34:26 +00:00
|
|
|
u64 *counters, sum = 0;
|
2012-04-20 15:02:45 +00:00
|
|
|
int cpu;
|
|
|
|
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
|
|
counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
|
|
|
|
sum += counters[idx];
|
|
|
|
}
|
|
|
|
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
|
2013-01-25 10:12:41 +00:00
|
|
|
/* Define a macro to reach the control buffer of the skb. The members of the
|
|
|
|
* control buffer are defined in struct batadv_skb_cb in types.h.
|
|
|
|
* The macro is inspired by the similar macro TCP_SKB_CB() in tcp.h.
|
|
|
|
*/
|
|
|
|
#define BATADV_SKB_CB(__skb) ((struct batadv_skb_cb *)&((__skb)->cb[0]))
|
|
|
|
|
2013-06-04 10:11:39 +00:00
|
|
|
unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len);
|
2013-11-16 11:03:51 +00:00
|
|
|
bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid);
|
2013-04-23 13:39:57 +00:00
|
|
|
|
2010-12-13 11:19:28 +00:00
|
|
|
#endif /* _NET_BATMAN_ADV_MAIN_H_ */
|