diff options
Diffstat (limited to 'net/batman-adv/bat_iv_ogm.c')
| -rw-r--r-- | net/batman-adv/bat_iv_ogm.c | 69 |
1 files changed, 65 insertions, 4 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index aa11296e6bf8..4815db978c27 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -30,6 +30,7 @@ #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jiffies.h> +#include <linux/kernel.h> #include <linux/list.h> #include <linux/kref.h> #include <linux/lockdep.h> @@ -58,6 +59,8 @@ #include "send.h" #include "translation-table.h" +static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work); + /** * enum batadv_dup_status - duplicate status * @BATADV_NO_DUP: the packet is no duplicate @@ -731,7 +734,7 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, /* start timer for this packet */ INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work, - batadv_send_outstanding_bat_ogm_packet); + batadv_iv_send_outstanding_bat_ogm_packet); queue_delayed_work(batadv_event_workqueue, &forw_packet_aggr->delayed_work, send_time - jiffies); @@ -938,6 +941,19 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) u16 tvlv_len = 0; unsigned long send_time; + if ((hard_iface->if_status == BATADV_IF_NOT_IN_USE) || + (hard_iface->if_status == BATADV_IF_TO_BE_REMOVED)) + return; + + /* the interface gets activated here to avoid race conditions between + * the moment of activating the interface in + * hardif_activate_interface() where the originator mac is set and + * outdated packets (especially uninitialized mac addresses) in the + * packet queue + */ + if (hard_iface->if_status == BATADV_IF_TO_BE_ACTIVATED) + hard_iface->if_status = BATADV_IF_ACTIVE; + primary_if = batadv_primary_if_get_selected(bat_priv); if (hard_iface == primary_if) { @@ -1779,6 +1795,45 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, batadv_orig_node_put(orig_node); } +static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work) +{ + struct delayed_work *delayed_work; + struct batadv_forw_packet *forw_packet; + struct batadv_priv *bat_priv; + + delayed_work = to_delayed_work(work); + forw_packet = container_of(delayed_work, struct batadv_forw_packet, + delayed_work); + bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); + spin_lock_bh(&bat_priv->forw_bat_list_lock); + hlist_del(&forw_packet->list); + spin_unlock_bh(&bat_priv->forw_bat_list_lock); + + if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_DEACTIVATING) + goto out; + + batadv_iv_ogm_emit(forw_packet); + + /* we have to have at least one packet in the queue to determine the + * queues wake up time unless we are shutting down. + * + * only re-schedule if this is the "original" copy, e.g. the OGM of the + * primary interface should only be rescheduled once per period, but + * this function will be called for the forw_packet instances of the + * other secondary interfaces as well. + */ + if (forw_packet->own && + forw_packet->if_incoming == forw_packet->if_outgoing) + batadv_iv_ogm_schedule(forw_packet->if_incoming); + +out: + /* don't count own packet */ + if (!forw_packet->own) + atomic_inc(&bat_priv->batman_queue_left); + + batadv_forw_packet_free(forw_packet); +} + static int batadv_iv_ogm_receive(struct sk_buff *skb, struct batadv_hard_iface *if_incoming) { @@ -1795,7 +1850,8 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb, /* did we receive a B.A.T.M.A.N. IV OGM packet on an interface * that does not have B.A.T.M.A.N. IV enabled ? */ - if (bat_priv->bat_algo_ops->bat_ogm_emit != batadv_iv_ogm_emit) + if (bat_priv->bat_algo_ops->bat_iface_enable != + batadv_iv_ogm_iface_enable) return NET_RX_DROP; batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_RX); @@ -2053,14 +2109,19 @@ out: return ret; } +static void batadv_iv_iface_activate(struct batadv_hard_iface *hard_iface) +{ + /* begin scheduling originator messages on that interface */ + batadv_iv_ogm_schedule(hard_iface); +} + static struct batadv_algo_ops batadv_batman_iv __read_mostly = { .name = "BATMAN_IV", + .bat_iface_activate = batadv_iv_iface_activate, .bat_iface_enable = batadv_iv_ogm_iface_enable, .bat_iface_disable = batadv_iv_ogm_iface_disable, .bat_iface_update_mac = batadv_iv_ogm_iface_update_mac, .bat_primary_iface_set = batadv_iv_ogm_primary_iface_set, - .bat_ogm_schedule = batadv_iv_ogm_schedule, - .bat_ogm_emit = batadv_iv_ogm_emit, .bat_neigh_cmp = batadv_iv_ogm_neigh_cmp, .bat_neigh_is_similar_or_better = batadv_iv_ogm_neigh_is_sob, .bat_neigh_print = batadv_iv_neigh_print, |