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authorAntonio Quartulli <ordex@autistici.org>2012-10-01 09:57:35 +0200
committerAntonio Quartulli <ordex@autistici.org>2012-11-07 20:00:18 +0100
commit7cdcf6dddc428c90ac867267a8d301e9e8b25612 (patch)
tree7cdbf95a57239352f9203b96dc915649bc0be253 /net/batman-adv/routing.c
parentf6c57a460913f3c83b0e8eb51f4021fcf1c83cdc (diff)
downloadop-kernel-dev-7cdcf6dddc428c90ac867267a8d301e9e8b25612.zip
op-kernel-dev-7cdcf6dddc428c90ac867267a8d301e9e8b25612.tar.gz
batman-adv: add UNICAST_4ADDR packet type
The current unicast packet type does not contain the orig source address. This patches add a new unicast packet (called UNICAST_4ADDR) which provides two new fields: the originator source address and the subtype (the type of the data contained in the packet payload). The former is useful to identify the node which injected the packet into the network and the latter is useful to avoid creating new unicast packet types in the future: a macro defining a new subtype will be enough. Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv/routing.c')
-rw-r--r--net/batman-adv/routing.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 46dd5b4..859679b 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -986,14 +986,18 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
struct batadv_unicast_packet *unicast_packet;
int hdr_size = sizeof(*unicast_packet);
+ unicast_packet = (struct batadv_unicast_packet *)skb->data;
+
+ /* the caller function should have already pulled 2 bytes */
+ if (unicast_packet->header.packet_type == BATADV_UNICAST_4ADDR)
+ hdr_size = sizeof(struct batadv_unicast_4addr_packet);
+
if (batadv_check_unicast_packet(skb, hdr_size) < 0)
return NET_RX_DROP;
if (!batadv_check_unicast_ttvn(bat_priv, skb))
return NET_RX_DROP;
- unicast_packet = (struct batadv_unicast_packet *)skb->data;
-
/* packet for me */
if (batadv_is_my_mac(unicast_packet->dest)) {
batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,
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