diff options
| author | Antonio Quartulli <ordex@autistici.org> | 2012-08-08 20:50:57 +0400 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2012-11-07 23:00:22 +0400 |
| commit | 33af49ad8ae44de52c0ac30b1a9707dad5e4c418 (patch) | |
| tree | 8534639935a6962d862d88d7e18a4586ced67951 /net/batman-adv/distributed-arp-table.c | |
| parent | 172244748204c894864def59133d0133ccfabe30 (diff) | |
| download | linux-33af49ad8ae44de52c0ac30b1a9707dad5e4c418.tar.xz | |
batman-adv: Distributed ARP Table - add runtime switch
This patch adds a runtime switch that enables the user to turn the DAT feature
on or off at runtime
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv/distributed-arp-table.c')
| -rw-r--r-- | net/batman-adv/distributed-arp-table.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index f43bf8e4a2b7..c1a74a126f58 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -621,6 +621,9 @@ out: */ static void batadv_dat_hash_free(struct batadv_priv *bat_priv) { + if (!bat_priv->dat.hash) + return; + __batadv_dat_purge(bat_priv, NULL); batadv_hash_destroy(bat_priv->dat.hash); @@ -790,6 +793,9 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, struct sk_buff *skb_new; struct batadv_hard_iface *primary_if = NULL; + if (!atomic_read(&bat_priv->distributed_arp_table)) + goto out; + type = batadv_arp_get_type(bat_priv, skb, 0); /* If the node gets an ARP_REQUEST it has to send a DHT_GET unicast * message to the selected DHT candidates @@ -861,6 +867,9 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv, bool ret = false; int err; + if (!atomic_read(&bat_priv->distributed_arp_table)) + goto out; + type = batadv_arp_get_type(bat_priv, skb, hdr_size); if (type != ARPOP_REQUEST) goto out; @@ -924,6 +933,9 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, __be32 ip_src, ip_dst; uint8_t *hw_src, *hw_dst; + if (!atomic_read(&bat_priv->distributed_arp_table)) + return; + type = batadv_arp_get_type(bat_priv, skb, 0); if (type != ARPOP_REPLY) return; @@ -959,6 +971,9 @@ bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv, uint8_t *hw_src, *hw_dst; bool ret = false; + if (!atomic_read(&bat_priv->distributed_arp_table)) + goto out; + type = batadv_arp_get_type(bat_priv, skb, hdr_size); if (type != ARPOP_REPLY) goto out; @@ -1003,6 +1018,9 @@ bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv, bool ret = false; const size_t bcast_len = sizeof(struct batadv_bcast_packet); + if (!atomic_read(&bat_priv->distributed_arp_table)) + goto out; + /* If this packet is an ARP_REQUEST and the node already has the * information that it is going to ask, then the packet can be dropped */ |