^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Marek Lindner, Simon Wunderlich
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include "soft-interface.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "main.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/byteorder/generic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/cpumask.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/ethtool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/if_vlan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/kref.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/lockdep.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/percpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/printk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/rculist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/rcupdate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/stddef.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <uapi/linux/batadv_packet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <uapi/linux/batman_adv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include "bat_algo.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include "bridge_loop_avoidance.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include "debugfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include "distributed-arp-table.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include "gateway_client.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include "hard-interface.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include "multicast.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include "network-coding.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include "originator.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include "send.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include "sysfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include "translation-table.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * batadv_skb_head_push() - Increase header size and move (push) head pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * @skb: packet buffer which should be modified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * @len: number of bytes to add
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Return: 0 on success or negative error number in case of failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int batadv_skb_head_push(struct sk_buff *skb, unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /* TODO: We must check if we can release all references to non-payload
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * data using __skb_header_release in our skbs to allow skb_cow_header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * to work optimally. This means that those skbs are not allowed to read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * or write any data which is before the current position of skb->data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * after that call and thus allow other skbs with the same data buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * to write freely in that area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) result = skb_cow_head(skb, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (result < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) skb_push(skb, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static int batadv_interface_open(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) netif_start_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int batadv_interface_release(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * batadv_sum_counter() - Sum the cpu-local counters for index 'idx'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * @bat_priv: the bat priv with all the soft interface information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @idx: index of counter to sum up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * Return: sum of all cpu-local counters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static u64 batadv_sum_counter(struct batadv_priv *bat_priv, size_t idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) u64 *counters, sum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) for_each_possible_cpu(cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) sum += counters[idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return sum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static struct net_device_stats *batadv_interface_stats(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct batadv_priv *bat_priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct net_device_stats *stats = &dev->stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct batadv_priv *bat_priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct batadv_softif_vlan *vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct sockaddr *addr = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) u8 old_addr[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (!is_valid_ether_addr(addr->sa_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) ether_addr_copy(old_addr, dev->dev_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ether_addr_copy(dev->dev_addr, addr->sa_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* only modify transtable if it has been initialized before */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) batadv_tt_local_remove(bat_priv, old_addr, vlan->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) "mac address changed", false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) batadv_tt_local_add(dev, addr->sa_data, vlan->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) BATADV_NULL_IFINDEX, BATADV_NO_MARK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* check ranges */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (new_mtu < 68 || new_mtu > batadv_hardif_min_mtu(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) dev->mtu = new_mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * batadv_interface_set_rx_mode() - set the rx mode of a device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * @dev: registered network device to modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * We do not actually need to set any rx filters for the virtual batman
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * soft interface. However a dummy handler enables a user to set static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * multicast listeners for instance.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static void batadv_interface_set_rx_mode(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static netdev_tx_t batadv_interface_tx(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct net_device *soft_iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct ethhdr *ethhdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct batadv_priv *bat_priv = netdev_priv(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct batadv_hard_iface *primary_if = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct batadv_bcast_packet *bcast_packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static const u8 stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 0x00, 0x00};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static const u8 ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 0x00, 0x00};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) enum batadv_dhcp_recipient dhcp_rcp = BATADV_DHCP_NO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) u8 *dst_hint = NULL, chaddr[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct vlan_ethhdr *vhdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) unsigned int header_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) int data_len = skb->len, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) unsigned long brd_delay = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) bool do_bcast = false, client_added;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) unsigned short vid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u32 seqno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int gw_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) enum batadv_forw_mode forw_mode = BATADV_FORW_SINGLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct batadv_orig_node *mcast_single_orig = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) int mcast_is_routable = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) int network_offset = ETH_HLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) __be16 proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /* reset control block to avoid left overs from previous users */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) memset(skb->cb, 0, sizeof(struct batadv_skb_cb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) netif_trans_update(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) vid = batadv_get_vid(skb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ethhdr = eth_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) proto = ethhdr->h_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) switch (ntohs(proto)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) case ETH_P_8021Q:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (!pskb_may_pull(skb, sizeof(*vhdr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) vhdr = vlan_eth_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) proto = vhdr->h_vlan_encapsulated_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /* drop batman-in-batman packets to prevent loops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (proto != htons(ETH_P_BATMAN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) network_offset += VLAN_HLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) case ETH_P_BATMAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) skb_set_network_header(skb, network_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (batadv_bla_tx(bat_priv, skb, vid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /* skb->data might have been reallocated by batadv_bla_tx() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) ethhdr = eth_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* Register the client MAC in the transtable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (!is_multicast_ether_addr(ethhdr->h_source) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) !batadv_bla_is_loopdetect_mac(ethhdr->h_source)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) vid, skb->skb_iif,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) skb->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (!client_added)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) /* Snoop address candidates from DHCPACKs for early DAT filling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) batadv_dat_snoop_outgoing_dhcp_ack(bat_priv, skb, proto, vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) /* don't accept stp packets. STP does not help in meshes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * better use the bridge loop avoidance ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * The same goes for ECTP sent at least by some Cisco Switches,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * it might confuse the mesh when used with bridge loop avoidance.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (batadv_compare_eth(ethhdr->h_dest, stp_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (batadv_compare_eth(ethhdr->h_dest, ectp_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) gw_mode = atomic_read(&bat_priv->gw.mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (is_multicast_ether_addr(ethhdr->h_dest)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /* if gw mode is off, broadcast every packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (gw_mode == BATADV_GW_MODE_OFF) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) do_bcast = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) goto send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) dhcp_rcp = batadv_gw_dhcp_recipient_get(skb, &header_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) chaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) /* skb->data may have been modified by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * batadv_gw_dhcp_recipient_get()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ethhdr = eth_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* if gw_mode is on, broadcast any non-DHCP message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * All the DHCP packets are going to be sent as unicast
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (dhcp_rcp == BATADV_DHCP_NO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) do_bcast = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) goto send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (dhcp_rcp == BATADV_DHCP_TO_CLIENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) dst_hint = chaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) else if ((gw_mode == BATADV_GW_MODE_SERVER) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) (dhcp_rcp == BATADV_DHCP_TO_SERVER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) /* gateways should not forward any DHCP message if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * directed to a DHCP server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) send:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) forw_mode = batadv_mcast_forw_mode(bat_priv, skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) &mcast_single_orig,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) &mcast_is_routable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (forw_mode == BATADV_FORW_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (forw_mode == BATADV_FORW_SINGLE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) forw_mode == BATADV_FORW_SOME)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) do_bcast = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) batadv_skb_set_priority(skb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* ethernet packet should be broadcasted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (do_bcast) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) primary_if = batadv_primary_if_get_selected(bat_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (!primary_if)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /* in case of ARP request, we do not immediately broadcasti the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * packet, instead we first wait for DAT to try to retrieve the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * correct ARP entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) brd_delay = msecs_to_jiffies(ARP_REQ_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) bcast_packet = (struct batadv_bcast_packet *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) bcast_packet->version = BATADV_COMPAT_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) bcast_packet->ttl = BATADV_TTL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /* batman packet type: broadcast */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) bcast_packet->packet_type = BATADV_BCAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) bcast_packet->reserved = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* hw address of first interface is the orig mac because only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * this mac is known throughout the mesh
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) ether_addr_copy(bcast_packet->orig,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) primary_if->net_dev->dev_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /* set broadcast sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) seqno = atomic_inc_return(&bat_priv->bcast_seqno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) bcast_packet->seqno = htonl(seqno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /* a copy is stored in the bcast list, therefore removing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * the original skb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) consume_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) /* unicast packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* DHCP packets going to a server will use the GW feature */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (dhcp_rcp == BATADV_DHCP_TO_SERVER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) ret = batadv_gw_out_of_range(bat_priv, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) ret = batadv_send_skb_via_gw(bat_priv, skb, vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) } else if (mcast_single_orig) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) ret = batadv_mcast_forw_send_orig(bat_priv, skb, vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) mcast_single_orig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) } else if (forw_mode == BATADV_FORW_SOME) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) ret = batadv_mcast_forw_send(bat_priv, skb, vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) mcast_is_routable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (batadv_dat_snoop_outgoing_arp_request(bat_priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ret = batadv_send_skb_via_tt(bat_priv, skb, dst_hint,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (ret != NET_XMIT_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) goto dropped_freed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) batadv_inc_counter(bat_priv, BATADV_CNT_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) dropped:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) dropped_freed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (mcast_single_orig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) batadv_orig_node_put(mcast_single_orig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (primary_if)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) batadv_hardif_put(primary_if);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * batadv_interface_rx() - receive ethernet frame on local batman-adv interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) * @soft_iface: local interface which will receive the ethernet frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * @skb: ethernet frame for @soft_iface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) * @hdr_size: size of already parsed batman-adv header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) * @orig_node: originator from which the batman-adv packet was sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) * Sends an ethernet frame to the receive path of the local @soft_iface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * skb->data has still point to the batman-adv header with the size @hdr_size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * The caller has to have parsed this header already and made sure that at least
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * @hdr_size bytes are still available for pull in @skb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * The packet may still get dropped. This can happen when the encapsulated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * ethernet frame is invalid or contains again an batman-adv packet. Also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * unicast packets will be dropped directly when it was sent between two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * isolated clients.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) void batadv_interface_rx(struct net_device *soft_iface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct sk_buff *skb, int hdr_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct batadv_orig_node *orig_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct batadv_bcast_packet *batadv_bcast_packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct batadv_priv *bat_priv = netdev_priv(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) struct vlan_ethhdr *vhdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct ethhdr *ethhdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) unsigned short vid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) int packet_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) packet_type = batadv_bcast_packet->packet_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) skb_pull_rcsum(skb, hdr_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) /* clean the netfilter state now that the batman-adv header has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) * removed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) nf_reset_ct(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) vid = batadv_get_vid(skb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) ethhdr = eth_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) switch (ntohs(ethhdr->h_proto)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) case ETH_P_8021Q:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (!pskb_may_pull(skb, VLAN_ETH_HLEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) vhdr = (struct vlan_ethhdr *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* drop batman-in-batman packets to prevent loops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (vhdr->h_vlan_encapsulated_proto != htons(ETH_P_BATMAN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) case ETH_P_BATMAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /* skb->dev & skb->pkt_type are set here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) skb->protocol = eth_type_trans(skb, soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) batadv_inc_counter(bat_priv, BATADV_CNT_RX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) skb->len + ETH_HLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) /* Let the bridge loop avoidance check the packet. If will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * not handle it, we can safely push it up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (batadv_bla_rx(bat_priv, skb, vid, packet_type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) if (orig_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) batadv_tt_add_temporary_global_entry(bat_priv, orig_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) ethhdr->h_source, vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (is_multicast_ether_addr(ethhdr->h_dest)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /* set the mark on broadcast packets if AP isolation is ON and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * the packet is coming from an "isolated" client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (batadv_vlan_ap_isola_get(bat_priv, vid) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) batadv_tt_global_is_isolated(bat_priv, ethhdr->h_source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) vid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) /* save bits in skb->mark not covered by the mask and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * apply the mark on the rest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) skb->mark &= ~bat_priv->isolation_mark_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) skb->mark |= bat_priv->isolation_mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) } else if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) ethhdr->h_dest, vid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) goto dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) netif_rx(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) dropped:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) * batadv_softif_vlan_release() - release vlan from lists and queue for free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) * after rcu grace period
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) * @ref: kref pointer of the vlan object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) void batadv_softif_vlan_release(struct kref *ref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) struct batadv_softif_vlan *vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) vlan = container_of(ref, struct batadv_softif_vlan, refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) hlist_del_rcu(&vlan->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) spin_unlock_bh(&vlan->bat_priv->softif_vlan_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) kfree_rcu(vlan, rcu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * batadv_softif_vlan_get() - get the vlan object for a specific vid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * @bat_priv: the bat priv with all the soft interface information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * @vid: the identifier of the vlan object to retrieve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * Return: the private data of the vlan matching the vid passed as argument or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * NULL otherwise. The refcounter of the returned object is incremented by 1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) unsigned short vid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct batadv_softif_vlan *vlan_tmp, *vlan = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (vlan_tmp->vid != vid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (!kref_get_unless_zero(&vlan_tmp->refcount))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) vlan = vlan_tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) return vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * batadv_softif_create_vlan() - allocate the needed resources for a new vlan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * @bat_priv: the bat priv with all the soft interface information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) * @vid: the VLAN identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * Return: 0 on success, a negative error otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) struct batadv_softif_vlan *vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) spin_lock_bh(&bat_priv->softif_vlan_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) vlan = batadv_softif_vlan_get(bat_priv, vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (vlan) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (!vlan) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) vlan->bat_priv = bat_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) vlan->vid = vid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) kref_init(&vlan->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) atomic_set(&vlan->ap_isolation, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) kref_get(&vlan->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) /* batadv_sysfs_add_vlan cannot be in the spinlock section due to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) * sleeping behavior of the sysfs functions and the fs_reclaim lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) /* ref for the function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) /* ref for the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) /* add a new TT local entry. This one will be marked with the NOPURGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) batadv_tt_local_add(bat_priv->soft_iface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) bat_priv->soft_iface->dev_addr, vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) BATADV_NULL_IFINDEX, BATADV_NO_MARK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /* don't return reference to new softif_vlan */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * batadv_softif_destroy_vlan() - remove and destroy a softif_vlan object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * @bat_priv: the bat priv with all the soft interface information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * @vlan: the object to remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) struct batadv_softif_vlan *vlan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) /* explicitly remove the associated TT local entry because it is marked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * with the NOPURGE flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) vlan->vid, "vlan interface destroyed", false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) batadv_sysfs_del_vlan(bat_priv, vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) * batadv_interface_add_vid() - ndo_add_vid API implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) * @dev: the netdev of the mesh interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) * @proto: protocol of the vlan id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) * @vid: identifier of the new vlan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) * Set up all the internal structures for handling the new vlan on top of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) * mesh interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) * Return: 0 on success or a negative error code in case of failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) static int batadv_interface_add_vid(struct net_device *dev, __be16 proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) unsigned short vid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) struct batadv_priv *bat_priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) struct batadv_softif_vlan *vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) /* only 802.1Q vlans are supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * batman-adv does not know how to handle other types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (proto != htons(ETH_P_8021Q))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) vid |= BATADV_VLAN_HAS_TAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) /* if a new vlan is getting created and it already exists, it means that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) * it was not deleted yet. batadv_softif_vlan_get() increases the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * refcount in order to revive the object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) * if it does not exist then create it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) vlan = batadv_softif_vlan_get(bat_priv, vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if (!vlan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return batadv_softif_create_vlan(bat_priv, vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /* recreate the sysfs object if it was already destroyed (and it should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) * be since we received a kill_vid() for this vlan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) if (!vlan->kobj) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) /* add a new TT local entry. This one will be marked with the NOPURGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) * flag. This must be added again, even if the vlan object already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * exists, because the entry was deleted by kill_vid()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) batadv_tt_local_add(bat_priv->soft_iface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) bat_priv->soft_iface->dev_addr, vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) BATADV_NULL_IFINDEX, BATADV_NO_MARK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) * batadv_interface_kill_vid() - ndo_kill_vid API implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) * @dev: the netdev of the mesh interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) * @proto: protocol of the vlan id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) * @vid: identifier of the deleted vlan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) * Destroy all the internal structures used to handle the vlan identified by vid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) * on top of the mesh interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) * Return: 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) * or -ENOENT if the specified vlan id wasn't registered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) unsigned short vid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) struct batadv_priv *bat_priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) struct batadv_softif_vlan *vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) /* only 802.1Q vlans are supported. batman-adv does not know how to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) * handle other types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (proto != htons(ETH_P_8021Q))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (!vlan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) batadv_softif_destroy_vlan(bat_priv, vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) /* finally free the vlan object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) /* batman-adv network devices have devices nesting below it and are a special
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) * "super class" of normal network devices; split their locks off into a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) * separate class since they always nest.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) static struct lock_class_key batadv_netdev_xmit_lock_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) static struct lock_class_key batadv_netdev_addr_lock_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) * batadv_set_lockdep_class_one() - Set lockdep class for a single tx queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) * @dev: device which owns the tx queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) * @txq: tx queue to modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) * @_unused: always NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) static void batadv_set_lockdep_class_one(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct netdev_queue *txq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) void *_unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) * batadv_set_lockdep_class() - Set txq and addr_list lockdep class
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) * @dev: network device to modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) static void batadv_set_lockdep_class(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) * batadv_softif_init_late() - late stage initialization of soft interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) * @dev: registered network device to modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) * Return: error code on failures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) static int batadv_softif_init_late(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) struct batadv_priv *bat_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) u32 random_seqno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) size_t cnt_len = sizeof(u64) * BATADV_CNT_NUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) batadv_set_lockdep_class(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) bat_priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) bat_priv->soft_iface = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) /* batadv_interface_stats() needs to be available as soon as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) * register_netdevice() has been called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) if (!bat_priv->bat_counters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) atomic_set(&bat_priv->aggregated_ogms, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) atomic_set(&bat_priv->bonding, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) #ifdef CONFIG_BATMAN_ADV_BLA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) atomic_set(&bat_priv->bridge_loop_avoidance, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) #ifdef CONFIG_BATMAN_ADV_DAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) atomic_set(&bat_priv->distributed_arp_table, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) #ifdef CONFIG_BATMAN_ADV_MCAST
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) atomic_set(&bat_priv->multicast_mode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) atomic_set(&bat_priv->multicast_fanout, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) atomic_set(&bat_priv->gw.mode, BATADV_GW_MODE_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) atomic_set(&bat_priv->gw.bandwidth_down, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) atomic_set(&bat_priv->gw.bandwidth_up, 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) atomic_set(&bat_priv->orig_interval, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) atomic_set(&bat_priv->hop_penalty, 30);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) #ifdef CONFIG_BATMAN_ADV_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) atomic_set(&bat_priv->log_level, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) atomic_set(&bat_priv->fragmentation, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) atomic_set(&bat_priv->bcast_seqno, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) atomic_set(&bat_priv->tt.vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) atomic_set(&bat_priv->tt.local_changes, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) #ifdef CONFIG_BATMAN_ADV_BLA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) atomic_set(&bat_priv->bla.num_requests, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) atomic_set(&bat_priv->tp_num, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) bat_priv->tt.last_changeset = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) bat_priv->tt.last_changeset_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) bat_priv->isolation_mark = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) bat_priv->isolation_mark_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) /* randomize initial seqno to avoid collision */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) get_random_bytes(&random_seqno, sizeof(random_seqno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) atomic_set(&bat_priv->frag_seqno, random_seqno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) bat_priv->primary_if = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) batadv_nc_init_bat_priv(bat_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) ret = batadv_algo_select(bat_priv, batadv_routing_algo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) goto free_bat_counters;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) ret = batadv_debugfs_add_meshif(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) goto free_bat_counters;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) ret = batadv_mesh_init(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) goto unreg_debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) unreg_debugfs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) batadv_debugfs_del_meshif(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) free_bat_counters:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) free_percpu(bat_priv->bat_counters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) bat_priv->bat_counters = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) * batadv_softif_slave_add() - Add a slave interface to a batadv_soft_interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) * @dev: batadv_soft_interface used as master interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) * @slave_dev: net_device which should become the slave interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) * @extack: extended ACK report struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) * Return: 0 if successful or error otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) static int batadv_softif_slave_add(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) struct net_device *slave_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) struct batadv_hard_iface *hard_iface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) struct net *net = dev_net(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) hard_iface = batadv_hardif_get_by_netdev(slave_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) if (!hard_iface || hard_iface->soft_iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) ret = batadv_hardif_enable_interface(hard_iface, net, dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) if (hard_iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) batadv_hardif_put(hard_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) * batadv_softif_slave_del() - Delete a slave iface from a batadv_soft_interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) * @dev: batadv_soft_interface used as master interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) * @slave_dev: net_device which should be removed from the master interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) * Return: 0 if successful or error otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) static int batadv_softif_slave_del(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) struct net_device *slave_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) struct batadv_hard_iface *hard_iface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) hard_iface = batadv_hardif_get_by_netdev(slave_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) if (!hard_iface || hard_iface->soft_iface != dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) if (hard_iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) batadv_hardif_put(hard_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) static const struct net_device_ops batadv_netdev_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) .ndo_init = batadv_softif_init_late,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) .ndo_open = batadv_interface_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) .ndo_stop = batadv_interface_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) .ndo_get_stats = batadv_interface_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) .ndo_vlan_rx_add_vid = batadv_interface_add_vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) .ndo_set_mac_address = batadv_interface_set_mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) .ndo_change_mtu = batadv_interface_change_mtu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) .ndo_set_rx_mode = batadv_interface_set_rx_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) .ndo_start_xmit = batadv_interface_tx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) .ndo_validate_addr = eth_validate_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) .ndo_add_slave = batadv_softif_slave_add,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) .ndo_del_slave = batadv_softif_slave_del,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) static void batadv_get_drvinfo(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) struct ethtool_drvinfo *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) strscpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) strscpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) strscpy(info->fw_version, "N/A", sizeof(info->fw_version));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) strscpy(info->bus_info, "batman", sizeof(info->bus_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) * Declare each description string in struct.name[] to get fixed sized buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) * and compile time checking for strings longer than ETH_GSTRING_LEN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) static const struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) const char name[ETH_GSTRING_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) } batadv_counters_strings[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) { "tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) { "tx_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) { "tx_dropped" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) { "rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) { "rx_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) { "forward" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) { "forward_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) { "mgmt_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) { "mgmt_tx_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) { "mgmt_rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) { "mgmt_rx_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) { "frag_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) { "frag_tx_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) { "frag_rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) { "frag_rx_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) { "frag_fwd" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) { "frag_fwd_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) { "tt_request_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) { "tt_request_rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) { "tt_response_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) { "tt_response_rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) { "tt_roam_adv_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) { "tt_roam_adv_rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) #ifdef CONFIG_BATMAN_ADV_DAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) { "dat_get_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) { "dat_get_rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) { "dat_put_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) { "dat_put_rx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) { "dat_cached_reply_tx" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) #ifdef CONFIG_BATMAN_ADV_NC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) { "nc_code" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) { "nc_code_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) { "nc_recode" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) { "nc_recode_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) { "nc_buffer" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) { "nc_decode" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) { "nc_decode_bytes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) { "nc_decode_failed" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) { "nc_sniffed" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) if (stringset == ETH_SS_STATS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) memcpy(data, batadv_counters_strings,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) sizeof(batadv_counters_strings));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) static void batadv_get_ethtool_stats(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) struct ethtool_stats *stats, u64 *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) struct batadv_priv *bat_priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) for (i = 0; i < BATADV_CNT_NUM; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) data[i] = batadv_sum_counter(bat_priv, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) static int batadv_get_sset_count(struct net_device *dev, int stringset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (stringset == ETH_SS_STATS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) return BATADV_CNT_NUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) static const struct ethtool_ops batadv_ethtool_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) .get_drvinfo = batadv_get_drvinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) .get_link = ethtool_op_get_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) .get_strings = batadv_get_strings,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) .get_ethtool_stats = batadv_get_ethtool_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) .get_sset_count = batadv_get_sset_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) * batadv_softif_free() - Deconstructor of batadv_soft_interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) * @dev: Device to cleanup and remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) static void batadv_softif_free(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) batadv_debugfs_del_meshif(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) batadv_mesh_free(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) /* some scheduled RCU callbacks need the bat_priv struct to accomplish
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) * their tasks. Wait for them all to be finished before freeing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) * netdev and its private data (bat_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) * batadv_softif_init_early() - early stage initialization of soft interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) * @dev: registered network device to modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) static void batadv_softif_init_early(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) ether_setup(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) dev->netdev_ops = &batadv_netdev_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) dev->needs_free_netdev = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) dev->priv_destructor = batadv_softif_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_NETNS_LOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) dev->features |= NETIF_F_LLTX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) dev->priv_flags |= IFF_NO_QUEUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) /* can't call min_mtu, because the needed variables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) * have not been initialized yet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) dev->mtu = ETH_DATA_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) /* generate random address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) eth_hw_addr_random(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) dev->ethtool_ops = &batadv_ethtool_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) * batadv_softif_create() - Create and register soft interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) * @net: the applicable net namespace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) * @name: name of the new soft interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) * Return: newly allocated soft_interface, NULL on errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) struct net_device *batadv_softif_create(struct net *net, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) struct net_device *soft_iface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) soft_iface = alloc_netdev(sizeof(struct batadv_priv), name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) NET_NAME_UNKNOWN, batadv_softif_init_early);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) if (!soft_iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) dev_net_set(soft_iface, net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) soft_iface->rtnl_link_ops = &batadv_link_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) ret = register_netdevice(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) pr_err("Unable to register the batman interface '%s': %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) name, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) free_netdev(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) return soft_iface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) * batadv_softif_destroy_sysfs() - deletion of batadv_soft_interface via sysfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) * @soft_iface: the to-be-removed batman-adv interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) void batadv_softif_destroy_sysfs(struct net_device *soft_iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) struct batadv_priv *bat_priv = netdev_priv(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) struct batadv_softif_vlan *vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) ASSERT_RTNL();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) /* destroy the "untagged" VLAN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) if (vlan) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) batadv_softif_destroy_vlan(bat_priv, vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) batadv_sysfs_del_meshif(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) unregister_netdevice(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) * batadv_softif_destroy_netlink() - deletion of batadv_soft_interface via
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) * netlink
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) * @soft_iface: the to-be-removed batman-adv interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) * @head: list pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) struct list_head *head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) struct batadv_priv *bat_priv = netdev_priv(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) struct batadv_hard_iface *hard_iface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) struct batadv_softif_vlan *vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) if (hard_iface->soft_iface == soft_iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) batadv_hardif_disable_interface(hard_iface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) BATADV_IF_CLEANUP_KEEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) /* destroy the "untagged" VLAN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) if (vlan) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) batadv_softif_destroy_vlan(bat_priv, vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) batadv_softif_vlan_put(vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) batadv_sysfs_del_meshif(soft_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) unregister_netdevice_queue(soft_iface, head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) * batadv_softif_is_valid() - Check whether device is a batadv soft interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) * @net_dev: device which should be checked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) * Return: true when net_dev is a batman-adv interface, false otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) bool batadv_softif_is_valid(const struct net_device *net_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) struct rtnl_link_ops batadv_link_ops __read_mostly = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) .kind = "batadv",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) .priv_size = sizeof(struct batadv_priv),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) .setup = batadv_softif_init_early,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) .dellink = batadv_softif_destroy_netlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags