Simon Wunderlich | e19f975 | 2014-01-04 18:04:25 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2007-2014 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 |
Antonio Quartulli | ebf38fb | 2013-11-03 20:40:48 +0100 | [diff] [blame] | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 16 | */ |
| 17 | |
| 18 | #include "main.h" |
| 19 | #include "soft-interface.h" |
| 20 | #include "hard-interface.h" |
Antonio Quartulli | c384ea3 | 2011-06-26 03:37:18 +0200 | [diff] [blame] | 21 | #include "distributed-arp-table.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 22 | #include "routing.h" |
| 23 | #include "send.h" |
Sven Eckelmann | b706b13 | 2012-06-10 23:58:51 +0200 | [diff] [blame] | 24 | #include "debugfs.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 25 | #include "translation-table.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 26 | #include "hash.h" |
| 27 | #include "gateway_common.h" |
| 28 | #include "gateway_client.h" |
Sven Eckelmann | b706b13 | 2012-06-10 23:58:51 +0200 | [diff] [blame] | 29 | #include "sysfs.h" |
Antonio Quartulli | 43676ab5 | 2011-04-26 21:31:45 +0200 | [diff] [blame] | 30 | #include "originator.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 31 | #include <linux/slab.h> |
| 32 | #include <linux/ethtool.h> |
| 33 | #include <linux/etherdevice.h> |
| 34 | #include <linux/if_vlan.h> |
Linus Lüssing | 1d8ab8d | 2014-02-15 17:47:52 +0100 | [diff] [blame] | 35 | #include "multicast.h" |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 36 | #include "bridge_loop_avoidance.h" |
Martin Hundebøll | d353d8d | 2013-01-25 11:12:38 +0100 | [diff] [blame] | 37 | #include "network-coding.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 38 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 39 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); |
| 40 | static void batadv_get_drvinfo(struct net_device *dev, |
| 41 | struct ethtool_drvinfo *info); |
| 42 | static u32 batadv_get_msglevel(struct net_device *dev); |
| 43 | static void batadv_set_msglevel(struct net_device *dev, u32 value); |
| 44 | static u32 batadv_get_link(struct net_device *dev); |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 45 | static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data); |
| 46 | static void batadv_get_ethtool_stats(struct net_device *dev, |
| 47 | struct ethtool_stats *stats, u64 *data); |
| 48 | static int batadv_get_sset_count(struct net_device *dev, int stringset); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 49 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 50 | static const struct ethtool_ops batadv_ethtool_ops = { |
| 51 | .get_settings = batadv_get_settings, |
| 52 | .get_drvinfo = batadv_get_drvinfo, |
| 53 | .get_msglevel = batadv_get_msglevel, |
| 54 | .set_msglevel = batadv_set_msglevel, |
| 55 | .get_link = batadv_get_link, |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 56 | .get_strings = batadv_get_strings, |
| 57 | .get_ethtool_stats = batadv_get_ethtool_stats, |
| 58 | .get_sset_count = batadv_get_sset_count, |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 59 | }; |
| 60 | |
Sven Eckelmann | 04b482a | 2012-05-12 02:09:38 +0200 | [diff] [blame] | 61 | int batadv_skb_head_push(struct sk_buff *skb, unsigned int len) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 62 | { |
| 63 | int result; |
| 64 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 65 | /* TODO: We must check if we can release all references to non-payload |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 66 | * data using skb_header_release in our skbs to allow skb_cow_header to |
| 67 | * work optimally. This means that those skbs are not allowed to read |
| 68 | * or write any data which is before the current position of skb->data |
| 69 | * after that call and thus allow other skbs with the same data buffer |
| 70 | * to write freely in that area. |
| 71 | */ |
| 72 | result = skb_cow_head(skb, len); |
| 73 | if (result < 0) |
| 74 | return result; |
| 75 | |
| 76 | skb_push(skb, len); |
| 77 | return 0; |
| 78 | } |
| 79 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 80 | static int batadv_interface_open(struct net_device *dev) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 81 | { |
| 82 | netif_start_queue(dev); |
| 83 | return 0; |
| 84 | } |
| 85 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 86 | static int batadv_interface_release(struct net_device *dev) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 87 | { |
| 88 | netif_stop_queue(dev); |
| 89 | return 0; |
| 90 | } |
| 91 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 92 | static struct net_device_stats *batadv_interface_stats(struct net_device *dev) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 93 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 94 | struct batadv_priv *bat_priv = netdev_priv(dev); |
Marek Lindner | 1c9b055 | 2012-06-23 11:47:53 +0200 | [diff] [blame] | 95 | struct net_device_stats *stats = &bat_priv->stats; |
| 96 | |
| 97 | stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX); |
| 98 | stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES); |
| 99 | stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED); |
| 100 | stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX); |
| 101 | stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES); |
| 102 | return stats; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 103 | } |
| 104 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 105 | static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 106 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 107 | struct batadv_priv *bat_priv = netdev_priv(dev); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 108 | struct sockaddr *addr = p; |
Def | 40a3eb3 | 2012-09-20 14:56:13 +0200 | [diff] [blame] | 109 | uint8_t old_addr[ETH_ALEN]; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 110 | |
| 111 | if (!is_valid_ether_addr(addr->sa_data)) |
| 112 | return -EADDRNOTAVAIL; |
| 113 | |
Antonio Quartulli | 8fdd015 | 2014-01-22 00:42:11 +0100 | [diff] [blame] | 114 | ether_addr_copy(old_addr, dev->dev_addr); |
| 115 | ether_addr_copy(dev->dev_addr, addr->sa_data); |
Def | 40a3eb3 | 2012-09-20 14:56:13 +0200 | [diff] [blame] | 116 | |
Antonio Quartulli | 015758d | 2011-07-09 17:52:13 +0200 | [diff] [blame] | 117 | /* only modify transtable if it has been initialized before */ |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 118 | if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) { |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 119 | batadv_tt_local_remove(bat_priv, old_addr, BATADV_NO_FLAGS, |
Sven Eckelmann | 08c36d3 | 2012-05-12 02:09:39 +0200 | [diff] [blame] | 120 | "mac address changed", false); |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 121 | batadv_tt_local_add(dev, addr->sa_data, BATADV_NO_FLAGS, |
Antonio Quartulli | 9464d07 | 2013-11-16 12:03:48 +0100 | [diff] [blame] | 122 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 123 | } |
| 124 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 125 | return 0; |
| 126 | } |
| 127 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 128 | static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 129 | { |
| 130 | /* check ranges */ |
Sven Eckelmann | 9563877 | 2012-05-12 02:09:31 +0200 | [diff] [blame] | 131 | if ((new_mtu < 68) || (new_mtu > batadv_hardif_min_mtu(dev))) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 132 | return -EINVAL; |
| 133 | |
| 134 | dev->mtu = new_mtu; |
| 135 | |
| 136 | return 0; |
| 137 | } |
| 138 | |
Linus Lüssing | a4deee1a | 2013-05-26 17:56:07 +0200 | [diff] [blame] | 139 | /** |
| 140 | * batadv_interface_set_rx_mode - set the rx mode of a device |
| 141 | * @dev: registered network device to modify |
| 142 | * |
| 143 | * We do not actually need to set any rx filters for the virtual batman |
| 144 | * soft interface. However a dummy handler enables a user to set static |
| 145 | * multicast listeners for instance. |
| 146 | */ |
| 147 | static void batadv_interface_set_rx_mode(struct net_device *dev) |
| 148 | { |
| 149 | } |
| 150 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 151 | static int batadv_interface_tx(struct sk_buff *skb, |
| 152 | struct net_device *soft_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 153 | { |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 154 | struct ethhdr *ethhdr; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 155 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
| 156 | struct batadv_hard_iface *primary_if = NULL; |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 157 | struct batadv_bcast_packet *bcast_packet; |
Antonio Quartulli | 293e933 | 2013-05-19 12:55:16 +0200 | [diff] [blame] | 158 | __be16 ethertype = htons(ETH_P_BATMAN); |
Simon Wunderlich | 4934ab9 | 2012-08-19 20:10:09 +0200 | [diff] [blame] | 159 | static const uint8_t stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, |
| 160 | 0x00, 0x00}; |
| 161 | static const uint8_t ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00, |
| 162 | 0x00, 0x00}; |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 163 | enum batadv_dhcp_recipient dhcp_rcp = BATADV_DHCP_NO; |
| 164 | uint8_t *dst_hint = NULL, chaddr[ETH_ALEN]; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 165 | struct vlan_ethhdr *vhdr; |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 166 | unsigned int header_len = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 167 | int data_len = skb->len, ret; |
Antonio Quartulli | c384ea3 | 2011-06-26 03:37:18 +0200 | [diff] [blame] | 168 | unsigned long brd_delay = 1; |
Marek Lindner | a19d3d8 | 2013-05-27 15:33:25 +0800 | [diff] [blame] | 169 | bool do_bcast = false, client_added; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 170 | unsigned short vid; |
| 171 | uint32_t seqno; |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 172 | int gw_mode; |
Linus Lüssing | 1d8ab8d | 2014-02-15 17:47:52 +0100 | [diff] [blame] | 173 | enum batadv_forw_mode forw_mode; |
| 174 | struct batadv_orig_node *mcast_single_orig = NULL; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 175 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 176 | if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 177 | goto dropped; |
| 178 | |
| 179 | soft_iface->trans_start = jiffies; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 180 | vid = batadv_get_vid(skb, 0); |
Linus Lüssing | 927c2ed | 2014-01-19 22:22:45 +0100 | [diff] [blame] | 181 | ethhdr = eth_hdr(skb); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 182 | |
| 183 | switch (ntohs(ethhdr->h_proto)) { |
| 184 | case ETH_P_8021Q: |
Linus Lüssing | 927c2ed | 2014-01-19 22:22:45 +0100 | [diff] [blame] | 185 | vhdr = vlan_eth_hdr(skb); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 186 | |
Sven Eckelmann | 7e071c7 | 2012-06-03 22:19:13 +0200 | [diff] [blame] | 187 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 188 | break; |
| 189 | |
| 190 | /* fall through */ |
Antonio Quartulli | af5d4f7 | 2012-11-26 00:38:50 +0100 | [diff] [blame] | 191 | case ETH_P_BATMAN: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 192 | goto dropped; |
Simon Wunderlich | a7f6ee9 | 2012-01-22 20:00:18 +0100 | [diff] [blame] | 193 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 194 | |
Sven Eckelmann | 08adf15 | 2012-05-12 13:38:47 +0200 | [diff] [blame] | 195 | if (batadv_bla_tx(bat_priv, skb, vid)) |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 196 | goto dropped; |
| 197 | |
Linus Lüssing | 9d2c948 | 2013-08-06 20:21:15 +0200 | [diff] [blame] | 198 | /* skb->data might have been reallocated by batadv_bla_tx() */ |
Linus Lüssing | 927c2ed | 2014-01-19 22:22:45 +0100 | [diff] [blame] | 199 | ethhdr = eth_hdr(skb); |
Linus Lüssing | 9d2c948 | 2013-08-06 20:21:15 +0200 | [diff] [blame] | 200 | |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 201 | /* Register the client MAC in the transtable */ |
Marek Lindner | a19d3d8 | 2013-05-27 15:33:25 +0800 | [diff] [blame] | 202 | if (!is_multicast_ether_addr(ethhdr->h_source)) { |
| 203 | client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source, |
Antonio Quartulli | 9464d07 | 2013-11-16 12:03:48 +0100 | [diff] [blame] | 204 | vid, skb->skb_iif, |
| 205 | skb->mark); |
Marek Lindner | a19d3d8 | 2013-05-27 15:33:25 +0800 | [diff] [blame] | 206 | if (!client_added) |
| 207 | goto dropped; |
| 208 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 209 | |
Simon Wunderlich | b1a8c04 | 2012-01-22 20:00:25 +0100 | [diff] [blame] | 210 | /* don't accept stp packets. STP does not help in meshes. |
| 211 | * better use the bridge loop avoidance ... |
Simon Wunderlich | 4934ab9 | 2012-08-19 20:10:09 +0200 | [diff] [blame] | 212 | * |
| 213 | * The same goes for ECTP sent at least by some Cisco Switches, |
| 214 | * it might confuse the mesh when used with bridge loop avoidance. |
Simon Wunderlich | b1a8c04 | 2012-01-22 20:00:25 +0100 | [diff] [blame] | 215 | */ |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 216 | if (batadv_compare_eth(ethhdr->h_dest, stp_addr)) |
Simon Wunderlich | b1a8c04 | 2012-01-22 20:00:25 +0100 | [diff] [blame] | 217 | goto dropped; |
| 218 | |
Simon Wunderlich | 4934ab9 | 2012-08-19 20:10:09 +0200 | [diff] [blame] | 219 | if (batadv_compare_eth(ethhdr->h_dest, ectp_addr)) |
| 220 | goto dropped; |
| 221 | |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 222 | gw_mode = atomic_read(&bat_priv->gw_mode); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 223 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 224 | /* if gw mode is off, broadcast every packet */ |
| 225 | if (gw_mode == BATADV_GW_MODE_OFF) { |
| 226 | do_bcast = true; |
| 227 | goto send; |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 228 | } |
Linus Lüssing | 9d2c948 | 2013-08-06 20:21:15 +0200 | [diff] [blame] | 229 | |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 230 | dhcp_rcp = batadv_gw_dhcp_recipient_get(skb, &header_len, |
| 231 | chaddr); |
| 232 | /* skb->data may have been modified by |
| 233 | * batadv_gw_dhcp_recipient_get() |
Linus Lüssing | 9d2c948 | 2013-08-06 20:21:15 +0200 | [diff] [blame] | 234 | */ |
Linus Lüssing | 927c2ed | 2014-01-19 22:22:45 +0100 | [diff] [blame] | 235 | ethhdr = eth_hdr(skb); |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 236 | /* if gw_mode is on, broadcast any non-DHCP message. |
| 237 | * All the DHCP packets are going to be sent as unicast |
| 238 | */ |
| 239 | if (dhcp_rcp == BATADV_DHCP_NO) { |
| 240 | do_bcast = true; |
| 241 | goto send; |
| 242 | } |
| 243 | |
| 244 | if (dhcp_rcp == BATADV_DHCP_TO_CLIENT) |
| 245 | dst_hint = chaddr; |
| 246 | else if ((gw_mode == BATADV_GW_MODE_SERVER) && |
| 247 | (dhcp_rcp == BATADV_DHCP_TO_SERVER)) |
| 248 | /* gateways should not forward any DHCP message if |
| 249 | * directed to a DHCP server |
| 250 | */ |
| 251 | goto dropped; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 252 | |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 253 | send: |
Linus Lüssing | 1d8ab8d | 2014-02-15 17:47:52 +0100 | [diff] [blame] | 254 | if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) { |
| 255 | forw_mode = batadv_mcast_forw_mode(bat_priv, skb, |
| 256 | &mcast_single_orig); |
| 257 | if (forw_mode == BATADV_FORW_NONE) |
| 258 | goto dropped; |
| 259 | |
| 260 | if (forw_mode == BATADV_FORW_SINGLE) |
| 261 | do_bcast = false; |
| 262 | } |
| 263 | } |
| 264 | |
Simon Wunderlich | c54f38c | 2013-07-29 17:56:44 +0200 | [diff] [blame] | 265 | batadv_skb_set_priority(skb, 0); |
| 266 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 267 | /* ethernet packet should be broadcasted */ |
| 268 | if (do_bcast) { |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 269 | primary_if = batadv_primary_if_get_selected(bat_priv); |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 270 | if (!primary_if) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 271 | goto dropped; |
| 272 | |
Antonio Quartulli | c384ea3 | 2011-06-26 03:37:18 +0200 | [diff] [blame] | 273 | /* in case of ARP request, we do not immediately broadcasti the |
| 274 | * packet, instead we first wait for DAT to try to retrieve the |
| 275 | * correct ARP entry |
| 276 | */ |
| 277 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) |
| 278 | brd_delay = msecs_to_jiffies(ARP_REQ_DELAY); |
| 279 | |
Sven Eckelmann | 04b482a | 2012-05-12 02:09:38 +0200 | [diff] [blame] | 280 | if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 281 | goto dropped; |
| 282 | |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 283 | bcast_packet = (struct batadv_bcast_packet *)skb->data; |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 284 | bcast_packet->version = BATADV_COMPAT_VERSION; |
| 285 | bcast_packet->ttl = BATADV_TTL; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 286 | |
| 287 | /* batman packet type: broadcast */ |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 288 | bcast_packet->packet_type = BATADV_BCAST; |
Sven Eckelmann | 162d549 | 2012-06-28 11:56:52 +0200 | [diff] [blame] | 289 | bcast_packet->reserved = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 290 | |
| 291 | /* hw address of first interface is the orig mac because only |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 292 | * this mac is known throughout the mesh |
| 293 | */ |
Antonio Quartulli | 8fdd015 | 2014-01-22 00:42:11 +0100 | [diff] [blame] | 294 | ether_addr_copy(bcast_packet->orig, |
| 295 | primary_if->net_dev->dev_addr); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 296 | |
| 297 | /* set broadcast sequence number */ |
Sven Eckelmann | bbb1f90 | 2012-07-08 17:13:15 +0200 | [diff] [blame] | 298 | seqno = atomic_inc_return(&bat_priv->bcast_seqno); |
| 299 | bcast_packet->seqno = htonl(seqno); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 300 | |
Antonio Quartulli | c384ea3 | 2011-06-26 03:37:18 +0200 | [diff] [blame] | 301 | batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 302 | |
| 303 | /* a copy is stored in the bcast list, therefore removing |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 304 | * the original skb. |
| 305 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 306 | kfree_skb(skb); |
| 307 | |
| 308 | /* unicast packet */ |
| 309 | } else { |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 310 | /* DHCP packets going to a server will use the GW feature */ |
| 311 | if (dhcp_rcp == BATADV_DHCP_TO_SERVER) { |
Linus Lüssing | 9d2c948 | 2013-08-06 20:21:15 +0200 | [diff] [blame] | 312 | ret = batadv_gw_out_of_range(bat_priv, skb); |
Marek Lindner | be7af5c | 2011-09-08 13:12:53 +0200 | [diff] [blame] | 313 | if (ret) |
| 314 | goto dropped; |
Linus Lüssing | e300d31 | 2013-07-03 10:40:00 +0200 | [diff] [blame] | 315 | ret = batadv_send_skb_via_gw(bat_priv, skb, vid); |
Linus Lüssing | 1d8ab8d | 2014-02-15 17:47:52 +0100 | [diff] [blame] | 316 | } else if (mcast_single_orig) { |
| 317 | ret = batadv_send_skb_unicast(bat_priv, skb, |
| 318 | BATADV_UNICAST, 0, |
| 319 | mcast_single_orig, vid); |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 320 | } else { |
| 321 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, |
| 322 | skb)) |
| 323 | goto dropped; |
Linus Lüssing | e300d31 | 2013-07-03 10:40:00 +0200 | [diff] [blame] | 324 | |
Antonio Quartulli | 6c413b1 | 2013-11-05 19:31:08 +0100 | [diff] [blame] | 325 | batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb); |
| 326 | |
| 327 | ret = batadv_send_skb_via_tt(bat_priv, skb, dst_hint, |
| 328 | vid); |
| 329 | } |
Linus Lüssing | e300d31 | 2013-07-03 10:40:00 +0200 | [diff] [blame] | 330 | if (ret == NET_XMIT_DROP) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 331 | goto dropped_freed; |
| 332 | } |
| 333 | |
Marek Lindner | 1c9b055 | 2012-06-23 11:47:53 +0200 | [diff] [blame] | 334 | batadv_inc_counter(bat_priv, BATADV_CNT_TX); |
| 335 | batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 336 | goto end; |
| 337 | |
| 338 | dropped: |
| 339 | kfree_skb(skb); |
| 340 | dropped_freed: |
Marek Lindner | 1c9b055 | 2012-06-23 11:47:53 +0200 | [diff] [blame] | 341 | batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 342 | end: |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 343 | if (primary_if) |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 344 | batadv_hardif_free_ref(primary_if); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 345 | return NETDEV_TX_OK; |
| 346 | } |
| 347 | |
Sven Eckelmann | 04b482a | 2012-05-12 02:09:38 +0200 | [diff] [blame] | 348 | void batadv_interface_rx(struct net_device *soft_iface, |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 349 | struct sk_buff *skb, struct batadv_hard_iface *recv_if, |
Antonio Quartulli | 3713517 | 2012-07-05 23:38:30 +0200 | [diff] [blame] | 350 | int hdr_size, struct batadv_orig_node *orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 351 | { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 352 | struct batadv_bcast_packet *batadv_bcast_packet; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 353 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
Antonio Quartulli | 293e933 | 2013-05-19 12:55:16 +0200 | [diff] [blame] | 354 | __be16 ethertype = htons(ETH_P_BATMAN); |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 355 | struct vlan_ethhdr *vhdr; |
| 356 | struct ethhdr *ethhdr; |
| 357 | unsigned short vid; |
Simon Wunderlich | 2d3f6cc | 2012-07-04 20:38:19 +0200 | [diff] [blame] | 358 | bool is_bcast; |
| 359 | |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 360 | batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; |
| 361 | is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 362 | |
| 363 | /* check if enough space is available for pulling, and pull */ |
| 364 | if (!pskb_may_pull(skb, hdr_size)) |
| 365 | goto dropped; |
| 366 | |
| 367 | skb_pull_rcsum(skb, hdr_size); |
| 368 | skb_reset_mac_header(skb); |
| 369 | |
Antonio Quartulli | 55883fd | 2013-12-23 01:28:05 +0100 | [diff] [blame] | 370 | /* clean the netfilter state now that the batman-adv header has been |
| 371 | * removed |
| 372 | */ |
| 373 | nf_reset(skb); |
| 374 | |
Antonio Quartulli | 2b1e2cb | 2013-12-23 21:43:39 +0100 | [diff] [blame] | 375 | vid = batadv_get_vid(skb, 0); |
Antonio Quartulli | 7ed4be9 | 2013-04-08 15:08:18 +0200 | [diff] [blame] | 376 | ethhdr = eth_hdr(skb); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 377 | |
| 378 | switch (ntohs(ethhdr->h_proto)) { |
| 379 | case ETH_P_8021Q: |
| 380 | vhdr = (struct vlan_ethhdr *)skb->data; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 381 | |
Sven Eckelmann | 7e071c7 | 2012-06-03 22:19:13 +0200 | [diff] [blame] | 382 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 383 | break; |
| 384 | |
| 385 | /* fall through */ |
Antonio Quartulli | af5d4f7 | 2012-11-26 00:38:50 +0100 | [diff] [blame] | 386 | case ETH_P_BATMAN: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 387 | goto dropped; |
| 388 | } |
| 389 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 390 | /* skb->dev & skb->pkt_type are set here */ |
| 391 | if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) |
| 392 | goto dropped; |
| 393 | skb->protocol = eth_type_trans(skb, soft_iface); |
| 394 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 395 | /* should not be necessary anymore as we use skb_pull_rcsum() |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 396 | * TODO: please verify this and remove this TODO |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 397 | * -- Dec 21st 2009, Simon Wunderlich |
| 398 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 399 | |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 400 | /* skb->ip_summed = CHECKSUM_UNNECESSARY; */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 401 | |
Marek Lindner | 1c9b055 | 2012-06-23 11:47:53 +0200 | [diff] [blame] | 402 | batadv_inc_counter(bat_priv, BATADV_CNT_RX); |
| 403 | batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, |
| 404 | skb->len + ETH_HLEN); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 405 | |
| 406 | soft_iface->last_rx = jiffies; |
| 407 | |
Antonio Quartulli | 74490f9 | 2012-11-08 21:55:30 +0100 | [diff] [blame] | 408 | /* Let the bridge loop avoidance check the packet. If will |
| 409 | * not handle it, we can safely push it up. |
| 410 | */ |
| 411 | if (batadv_bla_rx(bat_priv, skb, vid, is_bcast)) |
| 412 | goto out; |
| 413 | |
Antonio Quartulli | 3713517 | 2012-07-05 23:38:30 +0200 | [diff] [blame] | 414 | if (orig_node) |
| 415 | batadv_tt_add_temporary_global_entry(bat_priv, orig_node, |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 416 | ethhdr->h_source, vid); |
Antonio Quartulli | 3713517 | 2012-07-05 23:38:30 +0200 | [diff] [blame] | 417 | |
Antonio Quartulli | 42cb0be | 2013-11-16 12:03:52 +0100 | [diff] [blame] | 418 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
| 419 | /* set the mark on broadcast packets if AP isolation is ON and |
| 420 | * the packet is coming from an "isolated" client |
| 421 | */ |
| 422 | if (batadv_vlan_ap_isola_get(bat_priv, vid) && |
| 423 | batadv_tt_global_is_isolated(bat_priv, ethhdr->h_source, |
| 424 | vid)) { |
| 425 | /* save bits in skb->mark not covered by the mask and |
| 426 | * apply the mark on the rest |
| 427 | */ |
| 428 | skb->mark &= ~bat_priv->isolation_mark_mask; |
| 429 | skb->mark |= bat_priv->isolation_mark; |
| 430 | } |
| 431 | } else if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, |
| 432 | ethhdr->h_dest, vid)) { |
Antonio Quartulli | 59b699c | 2011-07-07 15:35:36 +0200 | [diff] [blame] | 433 | goto dropped; |
Antonio Quartulli | 42cb0be | 2013-11-16 12:03:52 +0100 | [diff] [blame] | 434 | } |
Antonio Quartulli | 59b699c | 2011-07-07 15:35:36 +0200 | [diff] [blame] | 435 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 436 | netif_rx(skb); |
Simon Wunderlich | ba85fac | 2011-04-17 20:34:27 +0200 | [diff] [blame] | 437 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 438 | |
| 439 | dropped: |
| 440 | kfree_skb(skb); |
| 441 | out: |
| 442 | return; |
| 443 | } |
| 444 | |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 445 | /** |
| 446 | * batadv_softif_vlan_free_ref - decrease the vlan object refcounter and |
| 447 | * possibly free it |
| 448 | * @softif_vlan: the vlan object to release |
| 449 | */ |
Antonio Quartulli | 35df3b2 | 2014-05-08 17:13:15 +0200 | [diff] [blame] | 450 | void batadv_softif_vlan_free_ref(struct batadv_softif_vlan *vlan) |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 451 | { |
Antonio Quartulli | 35df3b2 | 2014-05-08 17:13:15 +0200 | [diff] [blame] | 452 | if (atomic_dec_and_test(&vlan->refcount)) { |
| 453 | spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock); |
| 454 | hlist_del_rcu(&vlan->list); |
| 455 | spin_unlock_bh(&vlan->bat_priv->softif_vlan_list_lock); |
| 456 | |
| 457 | kfree_rcu(vlan, rcu); |
| 458 | } |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | /** |
| 462 | * batadv_softif_vlan_get - get the vlan object for a specific vid |
| 463 | * @bat_priv: the bat priv with all the soft interface information |
| 464 | * @vid: the identifier of the vlan object to retrieve |
| 465 | * |
| 466 | * Returns the private data of the vlan matching the vid passed as argument or |
| 467 | * NULL otherwise. The refcounter of the returned object is incremented by 1. |
| 468 | */ |
Antonio Quartulli | 90f4435 | 2013-07-02 11:04:35 +0200 | [diff] [blame] | 469 | struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, |
| 470 | unsigned short vid) |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 471 | { |
| 472 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; |
| 473 | |
| 474 | rcu_read_lock(); |
| 475 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { |
| 476 | if (vlan_tmp->vid != vid) |
| 477 | continue; |
| 478 | |
| 479 | if (!atomic_inc_not_zero(&vlan_tmp->refcount)) |
| 480 | continue; |
| 481 | |
| 482 | vlan = vlan_tmp; |
| 483 | break; |
| 484 | } |
| 485 | rcu_read_unlock(); |
| 486 | |
| 487 | return vlan; |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | * batadv_create_vlan - allocate the needed resources for a new vlan |
| 492 | * @bat_priv: the bat priv with all the soft interface information |
| 493 | * @vid: the VLAN identifier |
| 494 | * |
| 495 | * Returns 0 on success, a negative error otherwise. |
| 496 | */ |
| 497 | int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) |
| 498 | { |
| 499 | struct batadv_softif_vlan *vlan; |
Antonio Quartulli | 90f4435 | 2013-07-02 11:04:35 +0200 | [diff] [blame] | 500 | int err; |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 501 | |
| 502 | vlan = batadv_softif_vlan_get(bat_priv, vid); |
| 503 | if (vlan) { |
| 504 | batadv_softif_vlan_free_ref(vlan); |
| 505 | return -EEXIST; |
| 506 | } |
| 507 | |
| 508 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); |
| 509 | if (!vlan) |
| 510 | return -ENOMEM; |
| 511 | |
Antonio Quartulli | 35df3b2 | 2014-05-08 17:13:15 +0200 | [diff] [blame] | 512 | vlan->bat_priv = bat_priv; |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 513 | vlan->vid = vid; |
| 514 | atomic_set(&vlan->refcount, 1); |
| 515 | |
Antonio Quartulli | b8cbd81 | 2013-07-02 11:04:36 +0200 | [diff] [blame] | 516 | atomic_set(&vlan->ap_isolation, 0); |
| 517 | |
Antonio Quartulli | 90f4435 | 2013-07-02 11:04:35 +0200 | [diff] [blame] | 518 | err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); |
| 519 | if (err) { |
| 520 | kfree(vlan); |
| 521 | return err; |
| 522 | } |
| 523 | |
Antonio Quartulli | 35df3b2 | 2014-05-08 17:13:15 +0200 | [diff] [blame] | 524 | spin_lock_bh(&bat_priv->softif_vlan_list_lock); |
| 525 | hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); |
| 526 | spin_unlock_bh(&bat_priv->softif_vlan_list_lock); |
| 527 | |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 528 | /* add a new TT local entry. This one will be marked with the NOPURGE |
| 529 | * flag |
| 530 | */ |
| 531 | batadv_tt_local_add(bat_priv->soft_iface, |
| 532 | bat_priv->soft_iface->dev_addr, vid, |
Antonio Quartulli | 9464d07 | 2013-11-16 12:03:48 +0100 | [diff] [blame] | 533 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 534 | |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 535 | return 0; |
| 536 | } |
| 537 | |
| 538 | /** |
| 539 | * batadv_softif_destroy_vlan - remove and destroy a softif_vlan object |
| 540 | * @bat_priv: the bat priv with all the soft interface information |
| 541 | * @vlan: the object to remove |
| 542 | */ |
| 543 | static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, |
| 544 | struct batadv_softif_vlan *vlan) |
| 545 | { |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 546 | /* explicitly remove the associated TT local entry because it is marked |
| 547 | * with the NOPURGE flag |
| 548 | */ |
| 549 | batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, |
| 550 | vlan->vid, "vlan interface destroyed", false); |
| 551 | |
Antonio Quartulli | 35df3b2 | 2014-05-08 17:13:15 +0200 | [diff] [blame] | 552 | batadv_sysfs_del_vlan(bat_priv, vlan); |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 553 | batadv_softif_vlan_free_ref(vlan); |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * batadv_interface_add_vid - ndo_add_vid API implementation |
| 558 | * @dev: the netdev of the mesh interface |
| 559 | * @vid: identifier of the new vlan |
| 560 | * |
| 561 | * Set up all the internal structures for handling the new vlan on top of the |
| 562 | * mesh interface |
| 563 | * |
| 564 | * Returns 0 on success or a negative error code in case of failure. |
| 565 | */ |
| 566 | static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, |
| 567 | unsigned short vid) |
| 568 | { |
| 569 | struct batadv_priv *bat_priv = netdev_priv(dev); |
Antonio Quartulli | 35df3b2 | 2014-05-08 17:13:15 +0200 | [diff] [blame] | 570 | struct batadv_softif_vlan *vlan; |
| 571 | int ret; |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 572 | |
| 573 | /* only 802.1Q vlans are supported. |
| 574 | * batman-adv does not know how to handle other types |
| 575 | */ |
| 576 | if (proto != htons(ETH_P_8021Q)) |
| 577 | return -EINVAL; |
| 578 | |
| 579 | vid |= BATADV_VLAN_HAS_TAG; |
| 580 | |
Antonio Quartulli | 35df3b2 | 2014-05-08 17:13:15 +0200 | [diff] [blame] | 581 | /* if a new vlan is getting created and it already exists, it means that |
| 582 | * it was not deleted yet. batadv_softif_vlan_get() increases the |
| 583 | * refcount in order to revive the object. |
| 584 | * |
| 585 | * if it does not exist then create it. |
| 586 | */ |
| 587 | vlan = batadv_softif_vlan_get(bat_priv, vid); |
| 588 | if (!vlan) |
| 589 | return batadv_softif_create_vlan(bat_priv, vid); |
| 590 | |
| 591 | /* recreate the sysfs object if it was already destroyed (and it should |
| 592 | * be since we received a kill_vid() for this vlan |
| 593 | */ |
| 594 | if (!vlan->kobj) { |
| 595 | ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); |
| 596 | if (ret) { |
| 597 | batadv_softif_vlan_free_ref(vlan); |
| 598 | return ret; |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | /* add a new TT local entry. This one will be marked with the NOPURGE |
| 603 | * flag. This must be added again, even if the vlan object already |
| 604 | * exists, because the entry was deleted by kill_vid() |
| 605 | */ |
| 606 | batadv_tt_local_add(bat_priv->soft_iface, |
| 607 | bat_priv->soft_iface->dev_addr, vid, |
| 608 | BATADV_NULL_IFINDEX, BATADV_NO_MARK); |
| 609 | |
| 610 | return 0; |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | /** |
| 614 | * batadv_interface_kill_vid - ndo_kill_vid API implementation |
| 615 | * @dev: the netdev of the mesh interface |
| 616 | * @vid: identifier of the deleted vlan |
| 617 | * |
| 618 | * Destroy all the internal structures used to handle the vlan identified by vid |
| 619 | * on top of the mesh interface |
| 620 | * |
| 621 | * Returns 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q |
| 622 | * or -ENOENT if the specified vlan id wasn't registered. |
| 623 | */ |
| 624 | static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, |
| 625 | unsigned short vid) |
| 626 | { |
| 627 | struct batadv_priv *bat_priv = netdev_priv(dev); |
| 628 | struct batadv_softif_vlan *vlan; |
| 629 | |
| 630 | /* only 802.1Q vlans are supported. batman-adv does not know how to |
| 631 | * handle other types |
| 632 | */ |
| 633 | if (proto != htons(ETH_P_8021Q)) |
| 634 | return -EINVAL; |
| 635 | |
| 636 | vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); |
| 637 | if (!vlan) |
| 638 | return -ENOENT; |
| 639 | |
| 640 | batadv_softif_destroy_vlan(bat_priv, vlan); |
| 641 | |
| 642 | /* finally free the vlan object */ |
| 643 | batadv_softif_vlan_free_ref(vlan); |
| 644 | |
| 645 | return 0; |
| 646 | } |
| 647 | |
Sven Eckelmann | 36c1d15 | 2012-08-20 09:03:59 +0200 | [diff] [blame] | 648 | /* batman-adv network devices have devices nesting below it and are a special |
| 649 | * "super class" of normal network devices; split their locks off into a |
| 650 | * separate class since they always nest. |
| 651 | */ |
| 652 | static struct lock_class_key batadv_netdev_xmit_lock_key; |
| 653 | static struct lock_class_key batadv_netdev_addr_lock_key; |
| 654 | |
| 655 | /** |
| 656 | * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue |
| 657 | * @dev: device which owns the tx queue |
| 658 | * @txq: tx queue to modify |
| 659 | * @_unused: always NULL |
| 660 | */ |
| 661 | static void batadv_set_lockdep_class_one(struct net_device *dev, |
| 662 | struct netdev_queue *txq, |
| 663 | void *_unused) |
| 664 | { |
| 665 | lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key); |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | * batadv_set_lockdep_class - Set txq and addr_list lockdep class |
| 670 | * @dev: network device to modify |
| 671 | */ |
| 672 | static void batadv_set_lockdep_class(struct net_device *dev) |
| 673 | { |
| 674 | lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key); |
| 675 | netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL); |
| 676 | } |
| 677 | |
| 678 | /** |
Simon Wunderlich | 5bc44dc | 2013-01-11 10:19:51 +0100 | [diff] [blame] | 679 | * batadv_softif_destroy_finish - cleans up the remains of a softif |
| 680 | * @work: work queue item |
| 681 | * |
| 682 | * Free the parts of the soft interface which can not be removed under |
| 683 | * rtnl lock (to prevent deadlock situations). |
| 684 | */ |
| 685 | static void batadv_softif_destroy_finish(struct work_struct *work) |
| 686 | { |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 687 | struct batadv_softif_vlan *vlan; |
Simon Wunderlich | 5bc44dc | 2013-01-11 10:19:51 +0100 | [diff] [blame] | 688 | struct batadv_priv *bat_priv; |
| 689 | struct net_device *soft_iface; |
| 690 | |
| 691 | bat_priv = container_of(work, struct batadv_priv, |
| 692 | cleanup_work); |
| 693 | soft_iface = bat_priv->soft_iface; |
| 694 | |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 695 | /* destroy the "untagged" VLAN */ |
| 696 | vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); |
| 697 | if (vlan) { |
| 698 | batadv_softif_destroy_vlan(bat_priv, vlan); |
| 699 | batadv_softif_vlan_free_ref(vlan); |
| 700 | } |
| 701 | |
Simon Wunderlich | 5bc44dc | 2013-01-11 10:19:51 +0100 | [diff] [blame] | 702 | batadv_sysfs_del_meshif(soft_iface); |
Marek Lindner | af63fde | 2014-02-08 23:28:18 +0800 | [diff] [blame] | 703 | unregister_netdev(soft_iface); |
Simon Wunderlich | 5bc44dc | 2013-01-11 10:19:51 +0100 | [diff] [blame] | 704 | } |
| 705 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 706 | /** |
| 707 | * batadv_softif_init_late - late stage initialization of soft interface |
| 708 | * @dev: registered network device to modify |
| 709 | * |
| 710 | * Returns error code on failures |
| 711 | */ |
| 712 | static int batadv_softif_init_late(struct net_device *dev) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 713 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 714 | struct batadv_priv *bat_priv; |
Martin Hundebøll | ee75ed8 | 2013-05-23 16:53:03 +0200 | [diff] [blame] | 715 | uint32_t random_seqno; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 716 | int ret; |
Sven Eckelmann | d69909d | 2012-06-03 22:19:20 +0200 | [diff] [blame] | 717 | size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 718 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 719 | batadv_set_lockdep_class(dev); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 720 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 721 | bat_priv = netdev_priv(dev); |
| 722 | bat_priv->soft_iface = dev; |
Simon Wunderlich | 5bc44dc | 2013-01-11 10:19:51 +0100 | [diff] [blame] | 723 | INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish); |
Marek Lindner | 1c9b055 | 2012-06-23 11:47:53 +0200 | [diff] [blame] | 724 | |
| 725 | /* batadv_interface_stats() needs to be available as soon as |
| 726 | * register_netdevice() has been called |
| 727 | */ |
| 728 | bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t)); |
| 729 | if (!bat_priv->bat_counters) |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 730 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 731 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 732 | atomic_set(&bat_priv->aggregated_ogms, 1); |
| 733 | atomic_set(&bat_priv->bonding, 0); |
Antonio Quartulli | fa70655 | 2012-11-26 01:27:29 +0100 | [diff] [blame] | 734 | #ifdef CONFIG_BATMAN_ADV_BLA |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 735 | atomic_set(&bat_priv->bridge_loop_avoidance, 0); |
Antonio Quartulli | fa70655 | 2012-11-26 01:27:29 +0100 | [diff] [blame] | 736 | #endif |
Antonio Quartulli | 33af49a | 2012-08-08 18:50:57 +0200 | [diff] [blame] | 737 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 738 | atomic_set(&bat_priv->distributed_arp_table, 1); |
| 739 | #endif |
Linus Lüssing | 60432d7 | 2014-02-15 17:47:51 +0100 | [diff] [blame] | 740 | #ifdef CONFIG_BATMAN_ADV_MCAST |
| 741 | bat_priv->mcast.flags = BATADV_NO_FLAGS; |
Linus Lüssing | 1d8ab8d | 2014-02-15 17:47:52 +0100 | [diff] [blame] | 742 | atomic_set(&bat_priv->multicast_mode, 1); |
Linus Lüssing | 60432d7 | 2014-02-15 17:47:51 +0100 | [diff] [blame] | 743 | atomic_set(&bat_priv->mcast.num_disabled, 0); |
Linus Lüssing | ab49886 | 2014-02-15 17:47:53 +0100 | [diff] [blame] | 744 | atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0); |
Linus Lüssing | 4c8755d | 2014-02-15 17:47:54 +0100 | [diff] [blame] | 745 | atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0); |
| 746 | atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0); |
Linus Lüssing | 60432d7 | 2014-02-15 17:47:51 +0100 | [diff] [blame] | 747 | #endif |
Sven Eckelmann | cd646ab | 2012-06-03 22:19:18 +0200 | [diff] [blame] | 748 | atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 749 | atomic_set(&bat_priv->gw_sel_class, 20); |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 750 | atomic_set(&bat_priv->gw.bandwidth_down, 100); |
| 751 | atomic_set(&bat_priv->gw.bandwidth_up, 20); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 752 | atomic_set(&bat_priv->orig_interval, 1000); |
Simon Wunderlich | e03366e | 2014-06-17 12:16:03 +0200 | [diff] [blame] | 753 | atomic_set(&bat_priv->hop_penalty, 30); |
Marek Lindner | 0c430d0 | 2012-12-16 13:53:15 +0800 | [diff] [blame] | 754 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 755 | atomic_set(&bat_priv->log_level, 0); |
Marek Lindner | 0c430d0 | 2012-12-16 13:53:15 +0800 | [diff] [blame] | 756 | #endif |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 757 | atomic_set(&bat_priv->fragmentation, 1); |
Marek Lindner | a19d3d8 | 2013-05-27 15:33:25 +0800 | [diff] [blame] | 758 | atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN); |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 759 | atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); |
| 760 | atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 761 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 762 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 763 | atomic_set(&bat_priv->bcast_seqno, 1); |
Sven Eckelmann | 807736f | 2012-07-15 22:26:51 +0200 | [diff] [blame] | 764 | atomic_set(&bat_priv->tt.vn, 0); |
| 765 | atomic_set(&bat_priv->tt.local_changes, 0); |
| 766 | atomic_set(&bat_priv->tt.ogm_append_cnt, 0); |
| 767 | #ifdef CONFIG_BATMAN_ADV_BLA |
| 768 | atomic_set(&bat_priv->bla.num_requests, 0); |
| 769 | #endif |
| 770 | bat_priv->tt.last_changeset = NULL; |
| 771 | bat_priv->tt.last_changeset_len = 0; |
Antonio Quartulli | c42edfe | 2013-11-16 12:03:47 +0100 | [diff] [blame] | 772 | bat_priv->isolation_mark = 0; |
| 773 | bat_priv->isolation_mark_mask = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 774 | |
Martin Hundebøll | ee75ed8 | 2013-05-23 16:53:03 +0200 | [diff] [blame] | 775 | /* randomize initial seqno to avoid collision */ |
| 776 | get_random_bytes(&random_seqno, sizeof(random_seqno)); |
| 777 | atomic_set(&bat_priv->frag_seqno, random_seqno); |
| 778 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 779 | bat_priv->primary_if = NULL; |
| 780 | bat_priv->num_ifaces = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 781 | |
Martin Hundebøll | d353d8d | 2013-01-25 11:12:38 +0100 | [diff] [blame] | 782 | batadv_nc_init_bat_priv(bat_priv); |
| 783 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 784 | ret = batadv_algo_select(bat_priv, batadv_routing_algo); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 785 | if (ret < 0) |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 786 | goto free_bat_counters; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 787 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 788 | ret = batadv_debugfs_add_meshif(dev); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 789 | if (ret < 0) |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 790 | goto free_bat_counters; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 791 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 792 | ret = batadv_mesh_init(dev); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 793 | if (ret < 0) |
| 794 | goto unreg_debugfs; |
| 795 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 796 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 797 | |
| 798 | unreg_debugfs: |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 799 | batadv_debugfs_del_meshif(dev); |
Marek Lindner | 1c9b055 | 2012-06-23 11:47:53 +0200 | [diff] [blame] | 800 | free_bat_counters: |
| 801 | free_percpu(bat_priv->bat_counters); |
Martin Hundebøll | f69ae77 | 2013-04-17 21:13:16 +0200 | [diff] [blame] | 802 | bat_priv->bat_counters = NULL; |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 803 | |
| 804 | return ret; |
| 805 | } |
| 806 | |
Sven Eckelmann | 3dbd550 | 2013-02-11 17:10:27 +0800 | [diff] [blame] | 807 | /** |
| 808 | * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface |
| 809 | * @dev: batadv_soft_interface used as master interface |
| 810 | * @slave_dev: net_device which should become the slave interface |
| 811 | * |
| 812 | * Return 0 if successful or error otherwise. |
| 813 | */ |
| 814 | static int batadv_softif_slave_add(struct net_device *dev, |
| 815 | struct net_device *slave_dev) |
| 816 | { |
| 817 | struct batadv_hard_iface *hard_iface; |
| 818 | int ret = -EINVAL; |
| 819 | |
| 820 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); |
| 821 | if (!hard_iface || hard_iface->soft_iface != NULL) |
| 822 | goto out; |
| 823 | |
| 824 | ret = batadv_hardif_enable_interface(hard_iface, dev->name); |
| 825 | |
| 826 | out: |
| 827 | if (hard_iface) |
| 828 | batadv_hardif_free_ref(hard_iface); |
| 829 | return ret; |
| 830 | } |
| 831 | |
| 832 | /** |
| 833 | * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface |
| 834 | * @dev: batadv_soft_interface used as master interface |
| 835 | * @slave_dev: net_device which should be removed from the master interface |
| 836 | * |
| 837 | * Return 0 if successful or error otherwise. |
| 838 | */ |
| 839 | static int batadv_softif_slave_del(struct net_device *dev, |
| 840 | struct net_device *slave_dev) |
| 841 | { |
| 842 | struct batadv_hard_iface *hard_iface; |
| 843 | int ret = -EINVAL; |
| 844 | |
| 845 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); |
| 846 | |
| 847 | if (!hard_iface || hard_iface->soft_iface != dev) |
| 848 | goto out; |
| 849 | |
| 850 | batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP); |
| 851 | ret = 0; |
| 852 | |
| 853 | out: |
| 854 | if (hard_iface) |
| 855 | batadv_hardif_free_ref(hard_iface); |
| 856 | return ret; |
| 857 | } |
| 858 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 859 | static const struct net_device_ops batadv_netdev_ops = { |
| 860 | .ndo_init = batadv_softif_init_late, |
| 861 | .ndo_open = batadv_interface_open, |
| 862 | .ndo_stop = batadv_interface_release, |
| 863 | .ndo_get_stats = batadv_interface_stats, |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 864 | .ndo_vlan_rx_add_vid = batadv_interface_add_vid, |
| 865 | .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid, |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 866 | .ndo_set_mac_address = batadv_interface_set_mac_addr, |
| 867 | .ndo_change_mtu = batadv_interface_change_mtu, |
Linus Lüssing | a4deee1a | 2013-05-26 17:56:07 +0200 | [diff] [blame] | 868 | .ndo_set_rx_mode = batadv_interface_set_rx_mode, |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 869 | .ndo_start_xmit = batadv_interface_tx, |
Sven Eckelmann | 3dbd550 | 2013-02-11 17:10:27 +0800 | [diff] [blame] | 870 | .ndo_validate_addr = eth_validate_addr, |
| 871 | .ndo_add_slave = batadv_softif_slave_add, |
| 872 | .ndo_del_slave = batadv_softif_slave_del, |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 873 | }; |
| 874 | |
| 875 | /** |
Sven Eckelmann | b324602 | 2013-02-11 17:10:23 +0800 | [diff] [blame] | 876 | * batadv_softif_free - Deconstructor of batadv_soft_interface |
| 877 | * @dev: Device to cleanup and remove |
| 878 | */ |
| 879 | static void batadv_softif_free(struct net_device *dev) |
| 880 | { |
| 881 | batadv_debugfs_del_meshif(dev); |
| 882 | batadv_mesh_free(dev); |
Antonio Quartulli | 0c50134 | 2013-04-19 11:04:52 +0200 | [diff] [blame] | 883 | |
| 884 | /* some scheduled RCU callbacks need the bat_priv struct to accomplish |
| 885 | * their tasks. Wait for them all to be finished before freeing the |
| 886 | * netdev and its private data (bat_priv) |
| 887 | */ |
| 888 | rcu_barrier(); |
| 889 | |
Sven Eckelmann | b324602 | 2013-02-11 17:10:23 +0800 | [diff] [blame] | 890 | free_netdev(dev); |
| 891 | } |
| 892 | |
| 893 | /** |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 894 | * batadv_softif_init_early - early stage initialization of soft interface |
| 895 | * @dev: registered network device to modify |
| 896 | */ |
| 897 | static void batadv_softif_init_early(struct net_device *dev) |
| 898 | { |
| 899 | struct batadv_priv *priv = netdev_priv(dev); |
| 900 | |
| 901 | ether_setup(dev); |
| 902 | |
| 903 | dev->netdev_ops = &batadv_netdev_ops; |
Sven Eckelmann | b324602 | 2013-02-11 17:10:23 +0800 | [diff] [blame] | 904 | dev->destructor = batadv_softif_free; |
Antonio Quartulli | 5d2c05b | 2013-07-02 11:04:34 +0200 | [diff] [blame] | 905 | dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 906 | dev->tx_queue_len = 0; |
| 907 | |
| 908 | /* can't call min_mtu, because the needed variables |
| 909 | * have not been initialized yet |
| 910 | */ |
| 911 | dev->mtu = ETH_DATA_LEN; |
| 912 | /* reserve more space in the skbuff for our header */ |
Marek Lindner | 411d6ed | 2013-05-08 13:31:59 +0800 | [diff] [blame] | 913 | dev->hard_header_len = batadv_max_header_len(); |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 914 | |
| 915 | /* generate random address */ |
| 916 | eth_hw_addr_random(dev); |
| 917 | |
Wilfried Klaebe | 7ad24ea | 2014-05-11 00:12:32 +0000 | [diff] [blame] | 918 | dev->ethtool_ops = &batadv_ethtool_ops; |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 919 | |
| 920 | memset(priv, 0, sizeof(*priv)); |
| 921 | } |
| 922 | |
| 923 | struct net_device *batadv_softif_create(const char *name) |
| 924 | { |
| 925 | struct net_device *soft_iface; |
| 926 | int ret; |
| 927 | |
| 928 | soft_iface = alloc_netdev(sizeof(struct batadv_priv), name, |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 929 | NET_NAME_UNKNOWN, batadv_softif_init_early); |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 930 | if (!soft_iface) |
| 931 | return NULL; |
| 932 | |
Sven Eckelmann | a4ac28c | 2013-02-11 17:10:26 +0800 | [diff] [blame] | 933 | soft_iface->rtnl_link_ops = &batadv_link_ops; |
| 934 | |
Sven Eckelmann | 3713029 | 2013-02-11 17:10:22 +0800 | [diff] [blame] | 935 | ret = register_netdevice(soft_iface); |
| 936 | if (ret < 0) { |
| 937 | pr_err("Unable to register the batman interface '%s': %i\n", |
| 938 | name, ret); |
| 939 | free_netdev(soft_iface); |
| 940 | return NULL; |
| 941 | } |
| 942 | |
| 943 | return soft_iface; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 944 | } |
| 945 | |
Marek Lindner | e07932a | 2013-02-11 17:10:25 +0800 | [diff] [blame] | 946 | /** |
| 947 | * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs |
| 948 | * @soft_iface: the to-be-removed batman-adv interface |
| 949 | */ |
| 950 | void batadv_softif_destroy_sysfs(struct net_device *soft_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 951 | { |
Simon Wunderlich | 5bc44dc | 2013-01-11 10:19:51 +0100 | [diff] [blame] | 952 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
| 953 | |
Simon Wunderlich | 5bc44dc | 2013-01-11 10:19:51 +0100 | [diff] [blame] | 954 | queue_work(batadv_event_workqueue, &bat_priv->cleanup_work); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 955 | } |
| 956 | |
Sven Eckelmann | a4ac28c | 2013-02-11 17:10:26 +0800 | [diff] [blame] | 957 | /** |
| 958 | * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink |
| 959 | * @soft_iface: the to-be-removed batman-adv interface |
| 960 | * @head: list pointer |
| 961 | */ |
| 962 | static void batadv_softif_destroy_netlink(struct net_device *soft_iface, |
| 963 | struct list_head *head) |
| 964 | { |
| 965 | struct batadv_hard_iface *hard_iface; |
| 966 | |
| 967 | list_for_each_entry(hard_iface, &batadv_hardif_list, list) { |
| 968 | if (hard_iface->soft_iface == soft_iface) |
| 969 | batadv_hardif_disable_interface(hard_iface, |
| 970 | BATADV_IF_CLEANUP_KEEP); |
| 971 | } |
| 972 | |
| 973 | batadv_sysfs_del_meshif(soft_iface); |
| 974 | unregister_netdevice_queue(soft_iface, head); |
| 975 | } |
| 976 | |
Sven Eckelmann | 04b482a | 2012-05-12 02:09:38 +0200 | [diff] [blame] | 977 | int batadv_softif_is_valid(const struct net_device *net_dev) |
Sven Eckelmann | e44d8fe | 2011-03-04 21:36:41 +0000 | [diff] [blame] | 978 | { |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 979 | if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) |
Sven Eckelmann | e44d8fe | 2011-03-04 21:36:41 +0000 | [diff] [blame] | 980 | return 1; |
Sven Eckelmann | e44d8fe | 2011-03-04 21:36:41 +0000 | [diff] [blame] | 981 | |
| 982 | return 0; |
| 983 | } |
| 984 | |
Sven Eckelmann | a4ac28c | 2013-02-11 17:10:26 +0800 | [diff] [blame] | 985 | struct rtnl_link_ops batadv_link_ops __read_mostly = { |
| 986 | .kind = "batadv", |
| 987 | .priv_size = sizeof(struct batadv_priv), |
| 988 | .setup = batadv_softif_init_early, |
| 989 | .dellink = batadv_softif_destroy_netlink, |
| 990 | }; |
| 991 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 992 | /* ethtool */ |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 993 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 994 | { |
| 995 | cmd->supported = 0; |
| 996 | cmd->advertising = 0; |
David Decotigny | 7073949 | 2011-04-27 18:32:40 +0000 | [diff] [blame] | 997 | ethtool_cmd_speed_set(cmd, SPEED_10); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 998 | cmd->duplex = DUPLEX_FULL; |
| 999 | cmd->port = PORT_TP; |
| 1000 | cmd->phy_address = 0; |
| 1001 | cmd->transceiver = XCVR_INTERNAL; |
| 1002 | cmd->autoneg = AUTONEG_DISABLE; |
| 1003 | cmd->maxtxpkt = 0; |
| 1004 | cmd->maxrxpkt = 0; |
| 1005 | |
| 1006 | return 0; |
| 1007 | } |
| 1008 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 1009 | static void batadv_get_drvinfo(struct net_device *dev, |
| 1010 | struct ethtool_drvinfo *info) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1011 | { |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 1012 | strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver)); |
| 1013 | strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version)); |
| 1014 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); |
| 1015 | strlcpy(info->bus_info, "batman", sizeof(info->bus_info)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1016 | } |
| 1017 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 1018 | static u32 batadv_get_msglevel(struct net_device *dev) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1019 | { |
| 1020 | return -EOPNOTSUPP; |
| 1021 | } |
| 1022 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 1023 | static void batadv_set_msglevel(struct net_device *dev, u32 value) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1024 | { |
| 1025 | } |
| 1026 | |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 1027 | static u32 batadv_get_link(struct net_device *dev) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1028 | { |
| 1029 | return 1; |
| 1030 | } |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1031 | |
| 1032 | /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702 |
| 1033 | * Declare each description string in struct.name[] to get fixed sized buffer |
| 1034 | * and compile time checking for strings longer than ETH_GSTRING_LEN. |
| 1035 | */ |
| 1036 | static const struct { |
| 1037 | const char name[ETH_GSTRING_LEN]; |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 1038 | } batadv_counters_strings[] = { |
Marek Lindner | 1c9b055 | 2012-06-23 11:47:53 +0200 | [diff] [blame] | 1039 | { "tx" }, |
| 1040 | { "tx_bytes" }, |
| 1041 | { "tx_dropped" }, |
| 1042 | { "rx" }, |
| 1043 | { "rx_bytes" }, |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1044 | { "forward" }, |
| 1045 | { "forward_bytes" }, |
| 1046 | { "mgmt_tx" }, |
| 1047 | { "mgmt_tx_bytes" }, |
| 1048 | { "mgmt_rx" }, |
| 1049 | { "mgmt_rx_bytes" }, |
Martin Hundebøll | ee75ed8 | 2013-05-23 16:53:03 +0200 | [diff] [blame] | 1050 | { "frag_tx" }, |
| 1051 | { "frag_tx_bytes" }, |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 1052 | { "frag_rx" }, |
| 1053 | { "frag_rx_bytes" }, |
| 1054 | { "frag_fwd" }, |
| 1055 | { "frag_fwd_bytes" }, |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1056 | { "tt_request_tx" }, |
| 1057 | { "tt_request_rx" }, |
| 1058 | { "tt_response_tx" }, |
| 1059 | { "tt_response_rx" }, |
| 1060 | { "tt_roam_adv_tx" }, |
| 1061 | { "tt_roam_adv_rx" }, |
Martin Hundebøll | 4046b24 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1062 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 1063 | { "dat_get_tx" }, |
| 1064 | { "dat_get_rx" }, |
| 1065 | { "dat_put_tx" }, |
| 1066 | { "dat_put_rx" }, |
| 1067 | { "dat_cached_reply_tx" }, |
| 1068 | #endif |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 1069 | #ifdef CONFIG_BATMAN_ADV_NC |
| 1070 | { "nc_code" }, |
| 1071 | { "nc_code_bytes" }, |
| 1072 | { "nc_recode" }, |
| 1073 | { "nc_recode_bytes" }, |
Martin Hundebøll | 612d2b4 | 2013-01-25 11:12:42 +0100 | [diff] [blame] | 1074 | { "nc_buffer" }, |
Martin Hundebøll | 2df5278 | 2013-01-25 11:12:43 +0100 | [diff] [blame] | 1075 | { "nc_decode" }, |
| 1076 | { "nc_decode_bytes" }, |
| 1077 | { "nc_decode_failed" }, |
| 1078 | { "nc_sniffed" }, |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 1079 | #endif |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1080 | }; |
| 1081 | |
| 1082 | static void batadv_get_strings(struct net_device *dev, uint32_t stringset, |
| 1083 | uint8_t *data) |
| 1084 | { |
| 1085 | if (stringset == ETH_SS_STATS) |
Sven Eckelmann | 0294ca0 | 2012-05-16 20:23:15 +0200 | [diff] [blame] | 1086 | memcpy(data, batadv_counters_strings, |
| 1087 | sizeof(batadv_counters_strings)); |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1088 | } |
| 1089 | |
| 1090 | static void batadv_get_ethtool_stats(struct net_device *dev, |
| 1091 | struct ethtool_stats *stats, |
| 1092 | uint64_t *data) |
| 1093 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 1094 | struct batadv_priv *bat_priv = netdev_priv(dev); |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1095 | int i; |
| 1096 | |
Sven Eckelmann | d69909d | 2012-06-03 22:19:20 +0200 | [diff] [blame] | 1097 | for (i = 0; i < BATADV_CNT_NUM; i++) |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1098 | data[i] = batadv_sum_counter(bat_priv, i); |
| 1099 | } |
| 1100 | |
| 1101 | static int batadv_get_sset_count(struct net_device *dev, int stringset) |
| 1102 | { |
| 1103 | if (stringset == ETH_SS_STATS) |
Sven Eckelmann | d69909d | 2012-06-03 22:19:20 +0200 | [diff] [blame] | 1104 | return BATADV_CNT_NUM; |
Martin Hundebøll | f821486 | 2012-04-20 17:02:45 +0200 | [diff] [blame] | 1105 | |
| 1106 | return -EOPNOTSUPP; |
| 1107 | } |