diff options
Diffstat (limited to 'net/batman-adv/soft-interface.c')
| -rw-r--r-- | net/batman-adv/soft-interface.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 89c51b3cf430..822d788a5f86 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -159,7 +159,7 @@ static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) if (new_mtu < ETH_MIN_MTU || new_mtu > batadv_hardif_min_mtu(dev)) return -EINVAL; - dev->mtu = new_mtu; + WRITE_ONCE(dev->mtu, new_mtu); bat_priv->mtu_set_by_user = new_mtu; return 0; @@ -637,6 +637,14 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, if (proto != htons(ETH_P_8021Q)) return -EINVAL; + /* VID 0 is only used to indicate "priority tag" frames which only + * contain priority information and no VID. No management structures + * should be created for this VID and it should be handled like an + * untagged frame. + */ + if (vid == 0) + return 0; + vid |= BATADV_VLAN_HAS_TAG; /* if a new vlan is getting created and it already exists, it means that @@ -684,6 +692,12 @@ static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, if (proto != htons(ETH_P_8021Q)) return -EINVAL; + /* "priority tag" frames are handled like "untagged" frames + * and no softif_vlan needs to be destroyed + */ + if (vid == 0) + return 0; + vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); if (!vlan) return -ENOENT; @@ -783,13 +797,13 @@ static int batadv_softif_init_late(struct net_device *dev) atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); atomic_set(&bat_priv->bcast_seqno, 1); atomic_set(&bat_priv->tt.vn, 0); - atomic_set(&bat_priv->tt.local_changes, 0); atomic_set(&bat_priv->tt.ogm_append_cnt, 0); #ifdef CONFIG_BATMAN_ADV_BLA atomic_set(&bat_priv->bla.num_requests, 0); #endif atomic_set(&bat_priv->tp_num, 0); + WRITE_ONCE(bat_priv->tt.local_changes, 0); bat_priv->tt.last_changeset = NULL; bat_priv->tt.last_changeset_len = 0; bat_priv->isolation_mark = 0; @@ -1020,9 +1034,10 @@ static void batadv_softif_init_early(struct net_device *dev) dev->netdev_ops = &batadv_netdev_ops; dev->needs_free_netdev = true; dev->priv_destructor = batadv_softif_free; - dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_NETNS_LOCAL; - dev->features |= NETIF_F_LLTX; + dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; dev->priv_flags |= IFF_NO_QUEUE; + dev->lltx = true; + dev->netns_local = true; /* can't call min_mtu, because the needed variables * have not been initialized yet |