Antonio Quartulli | 0b87393 | 2013-01-04 03:05:31 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 2 | * |
| 3 | * Marek Lindner |
| 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 | #include "main.h" |
Sven Eckelmann | b706b13 | 2012-06-10 23:58:51 +0200 | [diff] [blame] | 21 | #include "sysfs.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 22 | #include "gateway_client.h" |
| 23 | #include "gateway_common.h" |
| 24 | #include "hard-interface.h" |
Linus Lüssing | 57f0c07 | 2011-03-14 22:43:33 +0000 | [diff] [blame] | 25 | #include "originator.h" |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 26 | #include "translation-table.h" |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 27 | #include "routing.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 28 | #include <linux/ip.h> |
| 29 | #include <linux/ipv6.h> |
| 30 | #include <linux/udp.h> |
| 31 | #include <linux/if_vlan.h> |
| 32 | |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 33 | /* This is the offset of the options field in a dhcp packet starting at |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 34 | * the beginning of the dhcp header |
| 35 | */ |
Sven Eckelmann | 347c80f | 2012-06-03 22:19:07 +0200 | [diff] [blame] | 36 | #define BATADV_DHCP_OPTIONS_OFFSET 240 |
| 37 | #define BATADV_DHCP_REQUEST 3 |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 38 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 39 | static void batadv_gw_node_free_ref(struct batadv_gw_node *gw_node) |
Marek Lindner | 25b6d3c | 2011-02-10 14:33:49 +0000 | [diff] [blame] | 40 | { |
| 41 | if (atomic_dec_and_test(&gw_node->refcount)) |
Paul E. McKenney | eb340b2 | 2011-05-01 23:25:02 -0700 | [diff] [blame] | 42 | kfree_rcu(gw_node, rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 43 | } |
| 44 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 45 | static struct batadv_gw_node * |
| 46 | batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 47 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 48 | struct batadv_gw_node *gw_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 49 | |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 50 | rcu_read_lock(); |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 51 | gw_node = rcu_dereference(bat_priv->gw.curr_gw); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 52 | if (!gw_node) |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 53 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 54 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 55 | if (!atomic_inc_not_zero(&gw_node->refcount)) |
| 56 | gw_node = NULL; |
| 57 | |
| 58 | out: |
| 59 | rcu_read_unlock(); |
| 60 | return gw_node; |
| 61 | } |
| 62 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 63 | struct batadv_orig_node * |
| 64 | batadv_gw_get_selected_orig(struct batadv_priv *bat_priv) |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 65 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 66 | struct batadv_gw_node *gw_node; |
| 67 | struct batadv_orig_node *orig_node = NULL; |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 68 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 69 | gw_node = batadv_gw_get_selected_gw_node(bat_priv); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 70 | if (!gw_node) |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 71 | goto out; |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 72 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 73 | rcu_read_lock(); |
| 74 | orig_node = gw_node->orig_node; |
| 75 | if (!orig_node) |
| 76 | goto unlock; |
| 77 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 78 | if (!atomic_inc_not_zero(&orig_node->refcount)) |
| 79 | orig_node = NULL; |
Linus Lüssing | 43c70ad | 2011-02-13 21:13:04 +0000 | [diff] [blame] | 80 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 81 | unlock: |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 82 | rcu_read_unlock(); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 83 | out: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 84 | if (gw_node) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 85 | batadv_gw_node_free_ref(gw_node); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 86 | return orig_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 87 | } |
| 88 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 89 | static void batadv_gw_select(struct batadv_priv *bat_priv, |
| 90 | struct batadv_gw_node *new_gw_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 91 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 92 | struct batadv_gw_node *curr_gw_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 93 | |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 94 | spin_lock_bh(&bat_priv->gw.list_lock); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 95 | |
Marek Lindner | 25b6d3c | 2011-02-10 14:33:49 +0000 | [diff] [blame] | 96 | if (new_gw_node && !atomic_inc_not_zero(&new_gw_node->refcount)) |
| 97 | new_gw_node = NULL; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 98 | |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 99 | curr_gw_node = rcu_dereference_protected(bat_priv->gw.curr_gw, 1); |
| 100 | rcu_assign_pointer(bat_priv->gw.curr_gw, new_gw_node); |
Marek Lindner | 25b6d3c | 2011-02-10 14:33:49 +0000 | [diff] [blame] | 101 | |
| 102 | if (curr_gw_node) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 103 | batadv_gw_node_free_ref(curr_gw_node); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 104 | |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 105 | spin_unlock_bh(&bat_priv->gw.list_lock); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 106 | } |
| 107 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 108 | void batadv_gw_deselect(struct batadv_priv *bat_priv) |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 109 | { |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 110 | atomic_set(&bat_priv->gw.reselect, 1); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 111 | } |
| 112 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 113 | static struct batadv_gw_node * |
| 114 | batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 115 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 116 | struct batadv_neigh_node *router; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 117 | struct batadv_gw_node *gw_node, *curr_gw = NULL; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 118 | uint32_t max_gw_factor = 0, tmp_gw_factor = 0; |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 119 | uint32_t gw_divisor; |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 120 | uint8_t max_tq = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 121 | int down, up; |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 122 | uint8_t tq_avg; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 123 | struct batadv_orig_node *orig_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 124 | |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 125 | gw_divisor = BATADV_TQ_LOCAL_WINDOW_SIZE * BATADV_TQ_LOCAL_WINDOW_SIZE; |
| 126 | gw_divisor *= 64; |
| 127 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 128 | rcu_read_lock(); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 129 | hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) { |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 130 | if (gw_node->deleted) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 131 | continue; |
| 132 | |
Sven Eckelmann | 84d5e5e | 2012-05-12 02:09:30 +0200 | [diff] [blame] | 133 | orig_node = gw_node->orig_node; |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 134 | router = batadv_orig_node_get_router(orig_node); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 135 | if (!router) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 136 | continue; |
| 137 | |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 138 | if (!atomic_inc_not_zero(&gw_node->refcount)) |
| 139 | goto next; |
| 140 | |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 141 | tq_avg = router->tq_avg; |
| 142 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 143 | switch (atomic_read(&bat_priv->gw_sel_class)) { |
| 144 | case 1: /* fast connection */ |
Sven Eckelmann | 84d5e5e | 2012-05-12 02:09:30 +0200 | [diff] [blame] | 145 | batadv_gw_bandwidth_to_kbit(orig_node->gw_flags, |
| 146 | &down, &up); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 147 | |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 148 | tmp_gw_factor = tq_avg * tq_avg * down * 100 * 100; |
| 149 | tmp_gw_factor /= gw_divisor; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 150 | |
| 151 | if ((tmp_gw_factor > max_gw_factor) || |
| 152 | ((tmp_gw_factor == max_gw_factor) && |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 153 | (tq_avg > max_tq))) { |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 154 | if (curr_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 155 | batadv_gw_node_free_ref(curr_gw); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 156 | curr_gw = gw_node; |
| 157 | atomic_inc(&curr_gw->refcount); |
| 158 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 159 | break; |
| 160 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 161 | default: /* 2: stable connection (use best statistic) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 162 | * 3: fast-switch (use best statistic but change as |
| 163 | * soon as a better gateway appears) |
| 164 | * XX: late-switch (use best statistic but change as |
| 165 | * soon as a better gateway appears which has |
| 166 | * $routing_class more tq points) |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 167 | */ |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 168 | if (tq_avg > max_tq) { |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 169 | if (curr_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 170 | batadv_gw_node_free_ref(curr_gw); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 171 | curr_gw = gw_node; |
| 172 | atomic_inc(&curr_gw->refcount); |
| 173 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 174 | break; |
| 175 | } |
| 176 | |
Sven Eckelmann | c67893d | 2012-07-08 18:33:51 +0200 | [diff] [blame] | 177 | if (tq_avg > max_tq) |
| 178 | max_tq = tq_avg; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 179 | |
| 180 | if (tmp_gw_factor > max_gw_factor) |
| 181 | max_gw_factor = tmp_gw_factor; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 182 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 183 | batadv_gw_node_free_ref(gw_node); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 184 | |
| 185 | next: |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 186 | batadv_neigh_node_free_ref(router); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 187 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 188 | rcu_read_unlock(); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 189 | |
| 190 | return curr_gw; |
| 191 | } |
| 192 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 193 | void batadv_gw_election(struct batadv_priv *bat_priv) |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 194 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 195 | struct batadv_gw_node *curr_gw = NULL, *next_gw = NULL; |
| 196 | struct batadv_neigh_node *router = NULL; |
Antonio Quartulli | 19595e0 | 2011-06-12 11:58:58 +0200 | [diff] [blame] | 197 | char gw_addr[18] = { '\0' }; |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 198 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 199 | /* The batman daemon checks here if we already passed a full originator |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 200 | * cycle in order to make sure we don't choose the first gateway we |
| 201 | * hear about. This check is based on the daemon's uptime which we |
| 202 | * don't have. |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 203 | */ |
Sven Eckelmann | cd646ab | 2012-06-03 22:19:18 +0200 | [diff] [blame] | 204 | if (atomic_read(&bat_priv->gw_mode) != BATADV_GW_MODE_CLIENT) |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 205 | goto out; |
| 206 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 207 | curr_gw = batadv_gw_get_selected_gw_node(bat_priv); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 208 | |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 209 | if (!batadv_atomic_dec_not_zero(&bat_priv->gw.reselect) && curr_gw) |
Marek Lindner | caa0bf6 | 2012-08-04 04:13:26 +0000 | [diff] [blame] | 210 | goto out; |
| 211 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 212 | next_gw = batadv_gw_get_best_gw_node(bat_priv); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 213 | |
| 214 | if (curr_gw == next_gw) |
| 215 | goto out; |
| 216 | |
| 217 | if (next_gw) { |
Antonio Quartulli | 19595e0 | 2011-06-12 11:58:58 +0200 | [diff] [blame] | 218 | sprintf(gw_addr, "%pM", next_gw->orig_node->orig); |
| 219 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 220 | router = batadv_orig_node_get_router(next_gw->orig_node); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 221 | if (!router) { |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 222 | batadv_gw_deselect(bat_priv); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 223 | goto out; |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | if ((curr_gw) && (!next_gw)) { |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 228 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 229 | "Removing selected gateway - no gateway in range\n"); |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 230 | batadv_throw_uevent(bat_priv, BATADV_UEV_GW, BATADV_UEV_DEL, |
| 231 | NULL); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 232 | } else if ((!curr_gw) && (next_gw)) { |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 233 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 234 | "Adding route to gateway %pM (gw_flags: %i, tq: %i)\n", |
| 235 | next_gw->orig_node->orig, |
| 236 | next_gw->orig_node->gw_flags, router->tq_avg); |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 237 | batadv_throw_uevent(bat_priv, BATADV_UEV_GW, BATADV_UEV_ADD, |
| 238 | gw_addr); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 239 | } else { |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 240 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 241 | "Changing route to gateway %pM (gw_flags: %i, tq: %i)\n", |
| 242 | next_gw->orig_node->orig, |
| 243 | next_gw->orig_node->gw_flags, router->tq_avg); |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 244 | batadv_throw_uevent(bat_priv, BATADV_UEV_GW, BATADV_UEV_CHANGE, |
| 245 | gw_addr); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 246 | } |
| 247 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 248 | batadv_gw_select(bat_priv, next_gw); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 249 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 250 | out: |
| 251 | if (curr_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 252 | batadv_gw_node_free_ref(curr_gw); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 253 | if (next_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 254 | batadv_gw_node_free_ref(next_gw); |
Antonio Quartulli | 2265c14 | 2011-04-27 00:22:00 +0200 | [diff] [blame] | 255 | if (router) |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 256 | batadv_neigh_node_free_ref(router); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 257 | } |
| 258 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 259 | void batadv_gw_check_election(struct batadv_priv *bat_priv, |
| 260 | struct batadv_orig_node *orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 261 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 262 | struct batadv_orig_node *curr_gw_orig; |
| 263 | struct batadv_neigh_node *router_gw = NULL, *router_orig = NULL; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 264 | uint8_t gw_tq_avg, orig_tq_avg; |
| 265 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 266 | curr_gw_orig = batadv_gw_get_selected_orig(bat_priv); |
Linus Lüssing | 57f0c07 | 2011-03-14 22:43:33 +0000 | [diff] [blame] | 267 | if (!curr_gw_orig) |
| 268 | goto deselect; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 269 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 270 | router_gw = batadv_orig_node_get_router(curr_gw_orig); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 271 | if (!router_gw) |
| 272 | goto deselect; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 273 | |
| 274 | /* this node already is the gateway */ |
Linus Lüssing | 57f0c07 | 2011-03-14 22:43:33 +0000 | [diff] [blame] | 275 | if (curr_gw_orig == orig_node) |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 276 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 277 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 278 | router_orig = batadv_orig_node_get_router(orig_node); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 279 | if (!router_orig) |
| 280 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 281 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 282 | gw_tq_avg = router_gw->tq_avg; |
| 283 | orig_tq_avg = router_orig->tq_avg; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 284 | |
| 285 | /* the TQ value has to be better */ |
| 286 | if (orig_tq_avg < gw_tq_avg) |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 287 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 288 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 289 | /* if the routing class is greater than 3 the value tells us how much |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 290 | * greater the TQ value of the new gateway must be |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 291 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 292 | if ((atomic_read(&bat_priv->gw_sel_class) > 3) && |
| 293 | (orig_tq_avg - gw_tq_avg < atomic_read(&bat_priv->gw_sel_class))) |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 294 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 295 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 296 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 297 | "Restarting gateway selection: better gateway found (tq curr: %i, tq new: %i)\n", |
| 298 | gw_tq_avg, orig_tq_avg); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 299 | |
| 300 | deselect: |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 301 | batadv_gw_deselect(bat_priv); |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 302 | out: |
Linus Lüssing | 57f0c07 | 2011-03-14 22:43:33 +0000 | [diff] [blame] | 303 | if (curr_gw_orig) |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 304 | batadv_orig_node_free_ref(curr_gw_orig); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 305 | if (router_gw) |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 306 | batadv_neigh_node_free_ref(router_gw); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 307 | if (router_orig) |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 308 | batadv_neigh_node_free_ref(router_orig); |
Linus Lüssing | 57f0c07 | 2011-03-14 22:43:33 +0000 | [diff] [blame] | 309 | |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 310 | return; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 311 | } |
| 312 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 313 | static void batadv_gw_node_add(struct batadv_priv *bat_priv, |
| 314 | struct batadv_orig_node *orig_node, |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 315 | uint8_t new_gwflags) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 316 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 317 | struct batadv_gw_node *gw_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 318 | int down, up; |
| 319 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 320 | gw_node = kzalloc(sizeof(*gw_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 321 | if (!gw_node) |
| 322 | return; |
| 323 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 324 | INIT_HLIST_NODE(&gw_node->list); |
| 325 | gw_node->orig_node = orig_node; |
Marek Lindner | 25b6d3c | 2011-02-10 14:33:49 +0000 | [diff] [blame] | 326 | atomic_set(&gw_node->refcount, 1); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 327 | |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 328 | spin_lock_bh(&bat_priv->gw.list_lock); |
| 329 | hlist_add_head_rcu(&gw_node->list, &bat_priv->gw.list); |
| 330 | spin_unlock_bh(&bat_priv->gw.list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 331 | |
Sven Eckelmann | 84d5e5e | 2012-05-12 02:09:30 +0200 | [diff] [blame] | 332 | batadv_gw_bandwidth_to_kbit(new_gwflags, &down, &up); |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 333 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 334 | "Found new gateway %pM -> gw_class: %i - %i%s/%i%s\n", |
| 335 | orig_node->orig, new_gwflags, |
| 336 | (down > 2048 ? down / 1024 : down), |
| 337 | (down > 2048 ? "MBit" : "KBit"), |
| 338 | (up > 2048 ? up / 1024 : up), |
| 339 | (up > 2048 ? "MBit" : "KBit")); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 340 | } |
| 341 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 342 | void batadv_gw_node_update(struct batadv_priv *bat_priv, |
| 343 | struct batadv_orig_node *orig_node, |
| 344 | uint8_t new_gwflags) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 345 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 346 | struct batadv_gw_node *gw_node, *curr_gw; |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 347 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 348 | /* Note: We don't need a NULL check here, since curr_gw never gets |
Antonio Quartulli | 71e4aa9 | 2011-04-25 22:44:32 +0200 | [diff] [blame] | 349 | * dereferenced. If curr_gw is NULL we also should not exit as we may |
| 350 | * have this gateway in our list (duplication check!) even though we |
| 351 | * have no currently selected gateway. |
| 352 | */ |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 353 | curr_gw = batadv_gw_get_selected_gw_node(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 354 | |
| 355 | rcu_read_lock(); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 356 | hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 357 | if (gw_node->orig_node != orig_node) |
| 358 | continue; |
| 359 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 360 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 361 | "Gateway class of originator %pM changed from %i to %i\n", |
| 362 | orig_node->orig, gw_node->orig_node->gw_flags, |
| 363 | new_gwflags); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 364 | |
| 365 | gw_node->deleted = 0; |
| 366 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 367 | if (new_gwflags == BATADV_NO_FLAGS) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 368 | gw_node->deleted = jiffies; |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 369 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 370 | "Gateway %pM removed from gateway list\n", |
| 371 | orig_node->orig); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 372 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 373 | if (gw_node == curr_gw) |
| 374 | goto deselect; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 375 | } |
| 376 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 377 | goto unlock; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 378 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 379 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 380 | if (new_gwflags == BATADV_NO_FLAGS) |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 381 | goto unlock; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 382 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 383 | batadv_gw_node_add(bat_priv, orig_node, new_gwflags); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 384 | goto unlock; |
| 385 | |
| 386 | deselect: |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 387 | batadv_gw_deselect(bat_priv); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 388 | unlock: |
| 389 | rcu_read_unlock(); |
Antonio Quartulli | 71e4aa9 | 2011-04-25 22:44:32 +0200 | [diff] [blame] | 390 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 391 | if (curr_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 392 | batadv_gw_node_free_ref(curr_gw); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 395 | void batadv_gw_node_delete(struct batadv_priv *bat_priv, |
| 396 | struct batadv_orig_node *orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 397 | { |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 398 | batadv_gw_node_update(bat_priv, orig_node, 0); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 399 | } |
| 400 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 401 | void batadv_gw_node_purge(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 402 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 403 | struct batadv_gw_node *gw_node, *curr_gw; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 404 | struct hlist_node *node_tmp; |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 405 | unsigned long timeout = msecs_to_jiffies(2 * BATADV_PURGE_TIMEOUT); |
Sven Eckelmann | b4e1705 | 2011-06-15 09:41:37 +0200 | [diff] [blame] | 406 | int do_deselect = 0; |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 407 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 408 | curr_gw = batadv_gw_get_selected_gw_node(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 409 | |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 410 | spin_lock_bh(&bat_priv->gw.list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 411 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 412 | hlist_for_each_entry_safe(gw_node, node_tmp, |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 413 | &bat_priv->gw.list, list) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 414 | if (((!gw_node->deleted) || |
| 415 | (time_before(jiffies, gw_node->deleted + timeout))) && |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 416 | atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 417 | continue; |
| 418 | |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 419 | if (curr_gw == gw_node) |
| 420 | do_deselect = 1; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 421 | |
| 422 | hlist_del_rcu(&gw_node->list); |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 423 | batadv_gw_node_free_ref(gw_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 424 | } |
| 425 | |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 426 | spin_unlock_bh(&bat_priv->gw.list_lock); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 427 | |
| 428 | /* gw_deselect() needs to acquire the gw_list_lock */ |
| 429 | if (do_deselect) |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 430 | batadv_gw_deselect(bat_priv); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 431 | |
| 432 | if (curr_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 433 | batadv_gw_node_free_ref(curr_gw); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 434 | } |
| 435 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 436 | /* fails if orig_node has no router */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 437 | static int batadv_write_buffer_text(struct batadv_priv *bat_priv, |
| 438 | struct seq_file *seq, |
| 439 | const struct batadv_gw_node *gw_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 440 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 441 | struct batadv_gw_node *curr_gw; |
| 442 | struct batadv_neigh_node *router; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 443 | int down, up, ret = -1; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 444 | |
Sven Eckelmann | 84d5e5e | 2012-05-12 02:09:30 +0200 | [diff] [blame] | 445 | batadv_gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags, &down, &up); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 446 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 447 | router = batadv_orig_node_get_router(gw_node->orig_node); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 448 | if (!router) |
| 449 | goto out; |
| 450 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 451 | curr_gw = batadv_gw_get_selected_gw_node(bat_priv); |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 452 | |
| 453 | ret = seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %3i - %i%s/%i%s\n", |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 454 | (curr_gw == gw_node ? "=>" : " "), |
| 455 | gw_node->orig_node->orig, |
| 456 | router->tq_avg, router->addr, |
| 457 | router->if_incoming->net_dev->name, |
| 458 | gw_node->orig_node->gw_flags, |
| 459 | (down > 2048 ? down / 1024 : down), |
| 460 | (down > 2048 ? "MBit" : "KBit"), |
| 461 | (up > 2048 ? up / 1024 : up), |
| 462 | (up > 2048 ? "MBit" : "KBit")); |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 463 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 464 | batadv_neigh_node_free_ref(router); |
Marek Lindner | c4aac1a | 2011-03-23 11:24:34 +0100 | [diff] [blame] | 465 | if (curr_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 466 | batadv_gw_node_free_ref(curr_gw); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 467 | out: |
Linus Lüssing | 5d02b3c | 2011-02-13 21:13:02 +0000 | [diff] [blame] | 468 | return ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 469 | } |
| 470 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 471 | int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 472 | { |
| 473 | struct net_device *net_dev = (struct net_device *)seq->private; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 474 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
| 475 | struct batadv_hard_iface *primary_if; |
| 476 | struct batadv_gw_node *gw_node; |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 477 | int gw_count = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 478 | |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 479 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
| 480 | if (!primary_if) |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 481 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 482 | |
Sven Eckelmann | 86ceb36 | 2012-03-07 09:07:45 +0100 | [diff] [blame] | 483 | seq_printf(seq, |
| 484 | " %-12s (%s/%i) %17s [%10s]: gw_class ... [B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 485 | "Gateway", "#", BATADV_TQ_MAX_VALUE, "Nexthop", "outgoingIF", |
| 486 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 487 | primary_if->net_dev->dev_addr, net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 488 | |
| 489 | rcu_read_lock(); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 490 | hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 491 | if (gw_node->deleted) |
| 492 | continue; |
| 493 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 494 | /* fails if orig_node has no router */ |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 495 | if (batadv_write_buffer_text(bat_priv, seq, gw_node) < 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 496 | continue; |
| 497 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 498 | gw_count++; |
| 499 | } |
| 500 | rcu_read_unlock(); |
| 501 | |
| 502 | if (gw_count == 0) |
Antonio Quartulli | 0c81465 | 2013-03-21 09:23:29 +0100 | [diff] [blame] | 503 | seq_puts(seq, "No gateways in range ...\n"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 504 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 505 | out: |
| 506 | if (primary_if) |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 507 | batadv_hardif_free_ref(primary_if); |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 508 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 509 | } |
| 510 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 511 | static bool batadv_is_type_dhcprequest(struct sk_buff *skb, int header_len) |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 512 | { |
| 513 | int ret = false; |
| 514 | unsigned char *p; |
| 515 | int pkt_len; |
| 516 | |
| 517 | if (skb_linearize(skb) < 0) |
| 518 | goto out; |
| 519 | |
| 520 | pkt_len = skb_headlen(skb); |
| 521 | |
Sven Eckelmann | 347c80f | 2012-06-03 22:19:07 +0200 | [diff] [blame] | 522 | if (pkt_len < header_len + BATADV_DHCP_OPTIONS_OFFSET + 1) |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 523 | goto out; |
| 524 | |
Sven Eckelmann | 347c80f | 2012-06-03 22:19:07 +0200 | [diff] [blame] | 525 | p = skb->data + header_len + BATADV_DHCP_OPTIONS_OFFSET; |
| 526 | pkt_len -= header_len + BATADV_DHCP_OPTIONS_OFFSET + 1; |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 527 | |
| 528 | /* Access the dhcp option lists. Each entry is made up by: |
Antonio Quartulli | 015758d | 2011-07-09 17:52:13 +0200 | [diff] [blame] | 529 | * - octet 1: option type |
| 530 | * - octet 2: option data len (only if type != 255 and 0) |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 531 | * - octet 3: option data |
| 532 | */ |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 533 | while (*p != 255 && !ret) { |
Antonio Quartulli | 015758d | 2011-07-09 17:52:13 +0200 | [diff] [blame] | 534 | /* p now points to the first octet: option type */ |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 535 | if (*p == 53) { |
| 536 | /* type 53 is the message type option. |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 537 | * Jump the len octet and go to the data octet |
| 538 | */ |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 539 | if (pkt_len < 2) |
| 540 | goto out; |
| 541 | p += 2; |
| 542 | |
| 543 | /* check if the message type is what we need */ |
Sven Eckelmann | 347c80f | 2012-06-03 22:19:07 +0200 | [diff] [blame] | 544 | if (*p == BATADV_DHCP_REQUEST) |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 545 | ret = true; |
| 546 | break; |
| 547 | } else if (*p == 0) { |
| 548 | /* option type 0 (padding), just go forward */ |
| 549 | if (pkt_len < 1) |
| 550 | goto out; |
| 551 | pkt_len--; |
| 552 | p++; |
| 553 | } else { |
| 554 | /* This is any other option. So we get the length... */ |
| 555 | if (pkt_len < 1) |
| 556 | goto out; |
| 557 | pkt_len--; |
| 558 | p++; |
| 559 | |
| 560 | /* ...and then we jump over the data */ |
Antonio Quartulli | 9205cc5 | 2012-02-27 11:29:53 +0100 | [diff] [blame] | 561 | if (pkt_len < 1 + (*p)) |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 562 | goto out; |
Antonio Quartulli | 9205cc5 | 2012-02-27 11:29:53 +0100 | [diff] [blame] | 563 | pkt_len -= 1 + (*p); |
| 564 | p += 1 + (*p); |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 565 | } |
| 566 | } |
| 567 | out: |
| 568 | return ret; |
| 569 | } |
| 570 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 571 | bool batadv_gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 572 | { |
| 573 | struct ethhdr *ethhdr; |
| 574 | struct iphdr *iphdr; |
| 575 | struct ipv6hdr *ipv6hdr; |
| 576 | struct udphdr *udphdr; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 577 | |
| 578 | /* check for ethernet header */ |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 579 | if (!pskb_may_pull(skb, *header_len + ETH_HLEN)) |
| 580 | return false; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 581 | ethhdr = (struct ethhdr *)skb->data; |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 582 | *header_len += ETH_HLEN; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 583 | |
| 584 | /* check for initial vlan header */ |
| 585 | if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) { |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 586 | if (!pskb_may_pull(skb, *header_len + VLAN_HLEN)) |
| 587 | return false; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 588 | ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 589 | *header_len += VLAN_HLEN; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | /* check for ip header */ |
| 593 | switch (ntohs(ethhdr->h_proto)) { |
| 594 | case ETH_P_IP: |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 595 | if (!pskb_may_pull(skb, *header_len + sizeof(*iphdr))) |
| 596 | return false; |
| 597 | iphdr = (struct iphdr *)(skb->data + *header_len); |
| 598 | *header_len += iphdr->ihl * 4; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 599 | |
| 600 | /* check for udp header */ |
| 601 | if (iphdr->protocol != IPPROTO_UDP) |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 602 | return false; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 603 | |
| 604 | break; |
| 605 | case ETH_P_IPV6: |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 606 | if (!pskb_may_pull(skb, *header_len + sizeof(*ipv6hdr))) |
| 607 | return false; |
| 608 | ipv6hdr = (struct ipv6hdr *)(skb->data + *header_len); |
| 609 | *header_len += sizeof(*ipv6hdr); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 610 | |
| 611 | /* check for udp header */ |
| 612 | if (ipv6hdr->nexthdr != IPPROTO_UDP) |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 613 | return false; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 614 | |
| 615 | break; |
| 616 | default: |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 617 | return false; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 618 | } |
| 619 | |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 620 | if (!pskb_may_pull(skb, *header_len + sizeof(*udphdr))) |
| 621 | return false; |
| 622 | udphdr = (struct udphdr *)(skb->data + *header_len); |
| 623 | *header_len += sizeof(*udphdr); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 624 | |
| 625 | /* check for bootp port */ |
| 626 | if ((ntohs(ethhdr->h_proto) == ETH_P_IP) && |
Sven Eckelmann | 7c64fd9 | 2012-02-28 10:55:36 +0100 | [diff] [blame] | 627 | (ntohs(udphdr->dest) != 67)) |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 628 | return false; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 629 | |
| 630 | if ((ntohs(ethhdr->h_proto) == ETH_P_IPV6) && |
| 631 | (ntohs(udphdr->dest) != 547)) |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 632 | return false; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 633 | |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 634 | return true; |
| 635 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 636 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 637 | bool batadv_gw_out_of_range(struct batadv_priv *bat_priv, |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 638 | struct sk_buff *skb, struct ethhdr *ethhdr) |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 639 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 640 | struct batadv_neigh_node *neigh_curr = NULL, *neigh_old = NULL; |
| 641 | struct batadv_orig_node *orig_dst_node = NULL; |
| 642 | struct batadv_gw_node *curr_gw = NULL; |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 643 | bool ret, out_of_range = false; |
| 644 | unsigned int header_len = 0; |
| 645 | uint8_t curr_tq_avg; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 646 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 647 | ret = batadv_gw_is_dhcp_target(skb, &header_len); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 648 | if (!ret) |
| 649 | goto out; |
| 650 | |
Sven Eckelmann | 08c36d3 | 2012-05-12 02:09:39 +0200 | [diff] [blame] | 651 | orig_dst_node = batadv_transtable_search(bat_priv, ethhdr->h_source, |
| 652 | ethhdr->h_dest); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 653 | if (!orig_dst_node) |
| 654 | goto out; |
| 655 | |
| 656 | if (!orig_dst_node->gw_flags) |
| 657 | goto out; |
| 658 | |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 659 | ret = batadv_is_type_dhcprequest(skb, header_len); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 660 | if (!ret) |
| 661 | goto out; |
| 662 | |
| 663 | switch (atomic_read(&bat_priv->gw_mode)) { |
Sven Eckelmann | cd646ab | 2012-06-03 22:19:18 +0200 | [diff] [blame] | 664 | case BATADV_GW_MODE_SERVER: |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 665 | /* If we are a GW then we are our best GW. We can artificially |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 666 | * set the tq towards ourself as the maximum value |
| 667 | */ |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 668 | curr_tq_avg = BATADV_TQ_MAX_VALUE; |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 669 | break; |
Sven Eckelmann | cd646ab | 2012-06-03 22:19:18 +0200 | [diff] [blame] | 670 | case BATADV_GW_MODE_CLIENT: |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 671 | curr_gw = batadv_gw_get_selected_gw_node(bat_priv); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 672 | if (!curr_gw) |
| 673 | goto out; |
| 674 | |
| 675 | /* packet is going to our gateway */ |
| 676 | if (curr_gw->orig_node == orig_dst_node) |
| 677 | goto out; |
| 678 | |
| 679 | /* If the dhcp packet has been sent to a different gw, |
| 680 | * we have to evaluate whether the old gw is still |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 681 | * reliable enough |
| 682 | */ |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 683 | neigh_curr = batadv_find_router(bat_priv, curr_gw->orig_node, |
| 684 | NULL); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 685 | if (!neigh_curr) |
| 686 | goto out; |
| 687 | |
| 688 | curr_tq_avg = neigh_curr->tq_avg; |
| 689 | break; |
Sven Eckelmann | cd646ab | 2012-06-03 22:19:18 +0200 | [diff] [blame] | 690 | case BATADV_GW_MODE_OFF: |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 691 | default: |
| 692 | goto out; |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 693 | } |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 694 | |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 695 | neigh_old = batadv_find_router(bat_priv, orig_dst_node, NULL); |
Dan Carpenter | 2ef04f4 | 2011-11-29 09:09:09 +0300 | [diff] [blame] | 696 | if (!neigh_old) |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 697 | goto out; |
| 698 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 699 | if (curr_tq_avg - neigh_old->tq_avg > BATADV_GW_THRESHOLD) |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 700 | out_of_range = true; |
| 701 | |
| 702 | out: |
| 703 | if (orig_dst_node) |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 704 | batadv_orig_node_free_ref(orig_dst_node); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 705 | if (curr_gw) |
Sven Eckelmann | 1409a83 | 2012-05-12 18:33:55 +0200 | [diff] [blame] | 706 | batadv_gw_node_free_ref(curr_gw); |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 707 | if (neigh_old) |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 708 | batadv_neigh_node_free_ref(neigh_old); |
Antonio Quartulli | 43676ab | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 709 | if (neigh_curr) |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 710 | batadv_neigh_node_free_ref(neigh_curr); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 711 | return out_of_range; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 712 | } |