Antonio Quartulli | 0b87393 | 2013-01-04 03:05:31 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 2 | * |
| 3 | * Marek Lindner, Simon Wunderlich |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of version 2 of the GNU General Public |
| 7 | * License as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 17 | * 02110-1301, USA |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | #ifndef _NET_BATMAN_ADV_MAIN_H_ |
| 21 | #define _NET_BATMAN_ADV_MAIN_H_ |
| 22 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 23 | #define BATADV_DRIVER_AUTHOR "Marek Lindner <lindner_marek@yahoo.de>, " \ |
| 24 | "Simon Wunderlich <siwu@hrz.tu-chemnitz.de>" |
| 25 | #define BATADV_DRIVER_DESC "B.A.T.M.A.N. advanced" |
| 26 | #define BATADV_DRIVER_DEVICE "batman-adv" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 27 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 28 | #ifndef BATADV_SOURCE_VERSION |
Antonio Quartulli | 5ac2a17 | 2013-01-03 12:22:10 +0100 | [diff] [blame] | 29 | #define BATADV_SOURCE_VERSION "2013.1.0" |
Sven Eckelmann | 44c4349 | 2011-07-05 10:42:51 +0200 | [diff] [blame] | 30 | #endif |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 31 | |
| 32 | /* B.A.T.M.A.N. parameters */ |
| 33 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 34 | #define BATADV_TQ_MAX_VALUE 255 |
| 35 | #define BATADV_JITTER 20 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 36 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 37 | /* Time To Live of broadcast messages */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 38 | #define BATADV_TTL 50 |
Sven Eckelmann | 6e215fd | 2011-05-08 12:45:45 +0200 | [diff] [blame] | 39 | |
| 40 | /* purge originators after time in seconds if no valid packet comes in |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 41 | * -> TODO: check influence on BATADV_TQ_LOCAL_WINDOW_SIZE |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 42 | */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 43 | #define BATADV_PURGE_TIMEOUT 200000 /* 200 seconds */ |
Antonio Quartulli | 7cf4d52 | 2012-11-08 22:16:15 +0100 | [diff] [blame] | 44 | #define BATADV_TT_LOCAL_TIMEOUT 600000 /* in milliseconds */ |
Antonio Quartulli | a51fb9b | 2012-07-01 19:07:31 +0200 | [diff] [blame] | 45 | #define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000 /* in milliseconds */ |
Antonio Quartulli | 30cfd02 | 2012-07-05 23:38:29 +0200 | [diff] [blame] | 46 | #define BATADV_TT_CLIENT_TEMP_TIMEOUT 600000 /* in milliseconds */ |
Antonio Quartulli | 7241444 | 2012-12-25 13:14:37 +0100 | [diff] [blame] | 47 | #define BATADV_TT_WORK_PERIOD 5000 /* 5 seconds */ |
| 48 | #define BATADV_ORIG_WORK_PERIOD 1000 /* 1 second */ |
Antonio Quartulli | 2f1dfbe | 2012-06-30 20:01:19 +0200 | [diff] [blame] | 49 | #define BATADV_DAT_ENTRY_TIMEOUT (5*60000) /* 5 mins in milliseconds */ |
Antonio Quartulli | 015758d | 2011-07-09 17:52:13 +0200 | [diff] [blame] | 50 | /* sliding packet range of received originator messages in sequence numbers |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 51 | * (should be a multiple of our word size) |
| 52 | */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 53 | #define BATADV_TQ_LOCAL_WINDOW_SIZE 64 |
Antonio Quartulli | a51fb9b | 2012-07-01 19:07:31 +0200 | [diff] [blame] | 54 | /* milliseconds we have to keep pending tt_req */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 55 | #define BATADV_TT_REQUEST_TIMEOUT 3000 |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 56 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 57 | #define BATADV_TQ_GLOBAL_WINDOW_SIZE 5 |
| 58 | #define BATADV_TQ_LOCAL_BIDRECT_SEND_MINIMUM 1 |
| 59 | #define BATADV_TQ_LOCAL_BIDRECT_RECV_MINIMUM 1 |
| 60 | #define BATADV_TQ_TOTAL_BIDRECT_LIMIT 1 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 61 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 62 | /* number of OGMs sent with the last tt diff */ |
| 63 | #define BATADV_TT_OGM_APPEND_MAX 3 |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 64 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 65 | /* Time in which a client can roam at most ROAMING_MAX_COUNT times in |
Antonio Quartulli | a51fb9b | 2012-07-01 19:07:31 +0200 | [diff] [blame] | 66 | * milliseconds |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 67 | */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 68 | #define BATADV_ROAMING_MAX_TIME 20000 |
| 69 | #define BATADV_ROAMING_MAX_COUNT 5 |
Antonio Quartulli | cc47f66 | 2011-04-27 14:27:57 +0200 | [diff] [blame] | 70 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 71 | #define BATADV_NO_FLAGS 0 |
Marek Lindner | ecbd532 | 2011-06-09 17:13:09 +0200 | [diff] [blame] | 72 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 73 | #define BATADV_NULL_IFINDEX 0 /* dummy ifindex used to avoid iface checks */ |
Antonio Quartulli | bc27908 | 2011-07-07 15:35:35 +0200 | [diff] [blame] | 74 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 75 | #define BATADV_NUM_WORDS BITS_TO_LONGS(BATADV_TQ_LOCAL_WINDOW_SIZE) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 76 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 77 | #define BATADV_LOG_BUF_LEN 8192 /* has to be a power of 2 */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 78 | |
Antonio Quartulli | c384ea3 | 2011-06-26 03:37:18 +0200 | [diff] [blame] | 79 | /* msecs after which an ARP_REQUEST is sent in broadcast as fallback */ |
| 80 | #define ARP_REQ_DELAY 250 |
Antonio Quartulli | 785ea11 | 2011-11-23 11:35:44 +0100 | [diff] [blame] | 81 | /* numbers of originator to contact for any PUT/GET DHT operation */ |
| 82 | #define BATADV_DAT_CANDIDATES_NUM 3 |
| 83 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 84 | #define BATADV_VIS_INTERVAL 5000 /* 5 seconds */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 85 | |
Sven Eckelmann | 6e215fd | 2011-05-08 12:45:45 +0200 | [diff] [blame] | 86 | /* how much worse secondary interfaces may be to be considered as bonding |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 87 | * candidates |
| 88 | */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 89 | #define BATADV_BONDING_TQ_THRESHOLD 50 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 90 | |
Sven Eckelmann | 6e215fd | 2011-05-08 12:45:45 +0200 | [diff] [blame] | 91 | /* should not be bigger than 512 bytes or change the size of |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 92 | * forw_packet->direct_link_flags |
| 93 | */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 94 | #define BATADV_MAX_AGGREGATION_BYTES 512 |
| 95 | #define BATADV_MAX_AGGREGATION_MS 100 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 96 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 97 | #define BATADV_BLA_PERIOD_LENGTH 10000 /* 10 seconds */ |
| 98 | #define BATADV_BLA_BACKBONE_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 3) |
| 99 | #define BATADV_BLA_CLAIM_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 10) |
Simon Wunderlich | 2870987 | 2012-09-13 18:18:46 +0200 | [diff] [blame] | 100 | #define BATADV_BLA_WAIT_PERIODS 3 |
Simon Wunderlich | fe2da6f | 2012-01-22 20:00:24 +0100 | [diff] [blame] | 101 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 102 | #define BATADV_DUPLIST_SIZE 16 |
| 103 | #define BATADV_DUPLIST_TIMEOUT 500 /* 500 ms */ |
Sven Eckelmann | 6e215fd | 2011-05-08 12:45:45 +0200 | [diff] [blame] | 104 | /* don't reset again within 30 seconds */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 105 | #define BATADV_RESET_PROTECTION_MS 30000 |
| 106 | #define BATADV_EXPECTED_SEQNO_RANGE 65536 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 107 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 108 | enum batadv_mesh_state { |
| 109 | BATADV_MESH_INACTIVE, |
| 110 | BATADV_MESH_ACTIVE, |
| 111 | BATADV_MESH_DEACTIVATING, |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 112 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 113 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 114 | #define BATADV_BCAST_QUEUE_LEN 256 |
| 115 | #define BATADV_BATMAN_QUEUE_LEN 256 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 116 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 117 | enum batadv_uev_action { |
| 118 | BATADV_UEV_ADD = 0, |
| 119 | BATADV_UEV_DEL, |
| 120 | BATADV_UEV_CHANGE, |
Antonio Quartulli | c6bda68 | 2011-04-26 18:26:01 +0200 | [diff] [blame] | 121 | }; |
| 122 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 123 | enum batadv_uev_type { |
| 124 | BATADV_UEV_GW = 0, |
Antonio Quartulli | c6bda68 | 2011-04-26 18:26:01 +0200 | [diff] [blame] | 125 | }; |
| 126 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 127 | #define BATADV_GW_THRESHOLD 50 |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 128 | |
Antonio Quartulli | 785ea11 | 2011-11-23 11:35:44 +0100 | [diff] [blame] | 129 | #define BATADV_DAT_CANDIDATE_NOT_FOUND 0 |
| 130 | #define BATADV_DAT_CANDIDATE_ORIG 1 |
| 131 | |
Sven Eckelmann | 21a1236 | 2012-03-07 09:07:46 +0100 | [diff] [blame] | 132 | /* Debug Messages */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 133 | #ifdef pr_fmt |
| 134 | #undef pr_fmt |
| 135 | #endif |
Sven Eckelmann | 6e215fd | 2011-05-08 12:45:45 +0200 | [diff] [blame] | 136 | /* Append 'batman-adv: ' before kernel messages */ |
| 137 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 138 | |
Sven Eckelmann | 21a1236 | 2012-03-07 09:07:46 +0100 | [diff] [blame] | 139 | /* Kernel headers */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 140 | |
| 141 | #include <linux/mutex.h> /* mutex */ |
| 142 | #include <linux/module.h> /* needed by all modules */ |
| 143 | #include <linux/netdevice.h> /* netdevice */ |
Antonio Quartulli | 015758d | 2011-07-09 17:52:13 +0200 | [diff] [blame] | 144 | #include <linux/etherdevice.h> /* ethernet address classification */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 145 | #include <linux/if_ether.h> /* ethernet header */ |
| 146 | #include <linux/poll.h> /* poll_table */ |
| 147 | #include <linux/kthread.h> /* kernel threads */ |
| 148 | #include <linux/pkt_sched.h> /* schedule types */ |
| 149 | #include <linux/workqueue.h> /* workqueue */ |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 150 | #include <linux/percpu.h> |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 151 | #include <linux/slab.h> |
| 152 | #include <net/sock.h> /* struct sock */ |
| 153 | #include <linux/jiffies.h> |
| 154 | #include <linux/seq_file.h> |
| 155 | #include "types.h" |
| 156 | |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 157 | extern char batadv_routing_algo[]; |
| 158 | extern struct list_head batadv_hardif_list; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 159 | |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 160 | extern unsigned char batadv_broadcast_addr[]; |
| 161 | extern struct workqueue_struct *batadv_event_workqueue; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 162 | |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 163 | int batadv_mesh_init(struct net_device *soft_iface); |
| 164 | void batadv_mesh_free(struct net_device *soft_iface); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 165 | int batadv_is_my_mac(const uint8_t *addr); |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 166 | struct batadv_hard_iface * |
| 167 | batadv_seq_print_text_primary_if_get(struct seq_file *seq); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 168 | int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, |
| 169 | struct packet_type *ptype, |
| 170 | struct net_device *orig_dev); |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 171 | int |
| 172 | batadv_recv_handler_register(uint8_t packet_type, |
| 173 | int (*recv_handler)(struct sk_buff *, |
| 174 | struct batadv_hard_iface *)); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 175 | void batadv_recv_handler_unregister(uint8_t packet_type); |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 176 | int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops); |
| 177 | int batadv_algo_select(struct batadv_priv *bat_priv, char *name); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 178 | int batadv_algo_seq_print_text(struct seq_file *seq, void *offset); |
Sven Eckelmann | 95a066d | 2012-10-17 21:10:39 +0200 | [diff] [blame] | 179 | __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 180 | |
Antonio Quartulli | 0aca86c | 2012-08-27 11:45:37 +0200 | [diff] [blame] | 181 | /** |
| 182 | * enum batadv_dbg_level - available log levels |
| 183 | * @BATADV_DBG_BATMAN: OGM and TQ computations related messages |
| 184 | * @BATADV_DBG_ROUTES: route added / changed / deleted |
| 185 | * @BATADV_DBG_TT: translation table messages |
| 186 | * @BATADV_DBG_BLA: bridge loop avoidance messages |
Antonio Quartulli | 0e861a3 | 2012-10-01 09:57:36 +0200 | [diff] [blame] | 187 | * @BATADV_DBG_DAT: ARP snooping and DAT related messages |
Antonio Quartulli | 0aca86c | 2012-08-27 11:45:37 +0200 | [diff] [blame] | 188 | * @BATADV_DBG_ALL: the union of all the above log levels |
| 189 | */ |
Sven Eckelmann | 8de47de | 2012-07-08 16:32:09 +0200 | [diff] [blame] | 190 | enum batadv_dbg_level { |
| 191 | BATADV_DBG_BATMAN = BIT(0), |
Antonio Quartulli | 0aca86c | 2012-08-27 11:45:37 +0200 | [diff] [blame] | 192 | BATADV_DBG_ROUTES = BIT(1), |
| 193 | BATADV_DBG_TT = BIT(2), |
| 194 | BATADV_DBG_BLA = BIT(3), |
Antonio Quartulli | 0e861a3 | 2012-10-01 09:57:36 +0200 | [diff] [blame] | 195 | BATADV_DBG_DAT = BIT(4), |
| 196 | BATADV_DBG_ALL = 31, |
Sven Eckelmann | 8de47de | 2012-07-08 16:32:09 +0200 | [diff] [blame] | 197 | }; |
| 198 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 199 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 200 | int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) |
Sven Eckelmann | 40a072d | 2012-05-12 02:09:23 +0200 | [diff] [blame] | 201 | __printf(2, 3); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 202 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 203 | #define batadv_dbg(type, bat_priv, fmt, arg...) \ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 204 | do { \ |
| 205 | if (atomic_read(&bat_priv->log_level) & type) \ |
Sven Eckelmann | 40a072d | 2012-05-12 02:09:23 +0200 | [diff] [blame] | 206 | batadv_debug_log(bat_priv, fmt, ## arg);\ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 207 | } \ |
| 208 | while (0) |
| 209 | #else /* !CONFIG_BATMAN_ADV_DEBUG */ |
Sven Eckelmann | d3a547b | 2011-05-14 23:14:46 +0200 | [diff] [blame] | 210 | __printf(3, 4) |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 211 | static inline void batadv_dbg(int type __always_unused, |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 212 | struct batadv_priv *bat_priv __always_unused, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 213 | const char *fmt __always_unused, ...) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 214 | { |
| 215 | } |
| 216 | #endif |
| 217 | |
Sven Eckelmann | 3e34819 | 2012-05-16 20:23:22 +0200 | [diff] [blame] | 218 | #define batadv_info(net_dev, fmt, arg...) \ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 219 | do { \ |
| 220 | struct net_device *_netdev = (net_dev); \ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 221 | struct batadv_priv *_batpriv = netdev_priv(_netdev); \ |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 222 | batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 223 | pr_info("%s: " fmt, _netdev->name, ## arg); \ |
| 224 | } while (0) |
Sven Eckelmann | 3e34819 | 2012-05-16 20:23:22 +0200 | [diff] [blame] | 225 | #define batadv_err(net_dev, fmt, arg...) \ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 226 | do { \ |
| 227 | struct net_device *_netdev = (net_dev); \ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 228 | struct batadv_priv *_batpriv = netdev_priv(_netdev); \ |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 229 | batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 230 | pr_err("%s: " fmt, _netdev->name, ## arg); \ |
| 231 | } while (0) |
| 232 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 233 | /* returns 1 if they are the same ethernet addr |
Marek Lindner | 39901e7 | 2011-02-18 12:28:08 +0000 | [diff] [blame] | 234 | * |
| 235 | * note: can't use compare_ether_addr() as it requires aligned memory |
| 236 | */ |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 237 | static inline int batadv_compare_eth(const void *data1, const void *data2) |
Marek Lindner | 39901e7 | 2011-02-18 12:28:08 +0000 | [diff] [blame] | 238 | { |
| 239 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); |
| 240 | } |
| 241 | |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 242 | /** |
| 243 | * has_timed_out - compares current time (jiffies) and timestamp + timeout |
Martin Hundebøll | a04ccd5 | 2011-12-08 13:32:41 +0100 | [diff] [blame] | 244 | * @timestamp: base value to compare with (in jiffies) |
| 245 | * @timeout: added to base value before comparing (in milliseconds) |
| 246 | * |
| 247 | * Returns true if current time is after timestamp + timeout |
| 248 | */ |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 249 | static inline bool batadv_has_timed_out(unsigned long timestamp, |
| 250 | unsigned int timeout) |
Martin Hundebøll | a04ccd5 | 2011-12-08 13:32:41 +0100 | [diff] [blame] | 251 | { |
| 252 | return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout)); |
| 253 | } |
Sven Eckelmann | 747e422 | 2011-05-14 23:14:50 +0200 | [diff] [blame] | 254 | |
Sven Eckelmann | 3e34819 | 2012-05-16 20:23:22 +0200 | [diff] [blame] | 255 | #define batadv_atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) |
Antonio Quartulli | 5f657ec | 2011-04-20 09:52:56 +0200 | [diff] [blame] | 256 | |
Antonio Quartulli | f5d33d3 | 2011-05-18 09:20:50 +0200 | [diff] [blame] | 257 | /* Returns the smallest signed integer in two's complement with the sizeof x */ |
Sven Eckelmann | 3e34819 | 2012-05-16 20:23:22 +0200 | [diff] [blame] | 258 | #define batadv_smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u))) |
Antonio Quartulli | f5d33d3 | 2011-05-18 09:20:50 +0200 | [diff] [blame] | 259 | |
| 260 | /* Checks if a sequence number x is a predecessor/successor of y. |
| 261 | * they handle overflows/underflows and can correctly check for a |
| 262 | * predecessor/successor unless the variable sequence number has grown by |
| 263 | * more then 2**(bitwidth(x)-1)-1. |
| 264 | * This means that for a uint8_t with the maximum value 255, it would think: |
| 265 | * - when adding nothing - it is neither a predecessor nor a successor |
| 266 | * - before adding more than 127 to the starting value - it is a predecessor, |
| 267 | * - when adding 128 - it is neither a predecessor nor a successor, |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 268 | * - after adding more than 127 to the starting value - it is a successor |
| 269 | */ |
Sven Eckelmann | 3e34819 | 2012-05-16 20:23:22 +0200 | [diff] [blame] | 270 | #define batadv_seq_before(x, y) ({typeof(x) _d1 = (x); \ |
| 271 | typeof(y) _d2 = (y); \ |
| 272 | typeof(x) _dummy = (_d1 - _d2); \ |
| 273 | (void) (&_d1 == &_d2); \ |
| 274 | _dummy > batadv_smallest_signed_int(_dummy); }) |
| 275 | #define batadv_seq_after(x, y) batadv_seq_before(y, x) |
Antonio Quartulli | f5d33d3 | 2011-05-18 09:20:50 +0200 | [diff] [blame] | 276 | |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 277 | /* Stop preemption on local cpu while incrementing the counter */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 278 | static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx, |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 279 | size_t count) |
| 280 | { |
Shan Wei | 5691744 | 2012-11-13 09:53:26 +0800 | [diff] [blame] | 281 | this_cpu_add(bat_priv->bat_counters[idx], count); |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | #define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1) |
| 285 | |
| 286 | /* Sum and return the cpu-local counters for index 'idx' */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 287 | static inline uint64_t batadv_sum_counter(struct batadv_priv *bat_priv, |
| 288 | size_t idx) |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 289 | { |
Marek Lindner | 0c5e45b | 2012-06-23 11:46:05 +0200 | [diff] [blame] | 290 | uint64_t *counters, sum = 0; |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 291 | int cpu; |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 292 | |
| 293 | for_each_possible_cpu(cpu) { |
| 294 | counters = per_cpu_ptr(bat_priv->bat_counters, cpu); |
| 295 | sum += counters[idx]; |
| 296 | } |
| 297 | |
| 298 | return sum; |
| 299 | } |
| 300 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 301 | #endif /* _NET_BATMAN_ADV_MAIN_H_ */ |