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-rw-r--r--net/batman-adv/send.c87
1 files changed, 67 insertions, 20 deletions
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index acaa7ff..c83be5e 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -234,35 +234,31 @@ out:
}
/**
- * batadv_send_generic_unicast_skb - send an skb as unicast
+ * batadv_send_skb_unicast - encapsulate and send an skb via unicast
* @bat_priv: the bat priv with all the soft interface information
* @skb: payload to send
* @packet_type: the batman unicast packet type to use
* @packet_subtype: the unicast 4addr packet subtype (only relevant for unicast
* 4addr packets)
+ * @orig_node: the originator to send the packet to
* @vid: the vid to be used to search the translation table
*
- * Returns 1 in case of error or 0 otherwise.
+ * Wrap the given skb into a batman-adv unicast or unicast-4addr header
+ * depending on whether BATADV_UNICAST or BATADV_UNICAST_4ADDR was supplied
+ * as packet_type. Then send this frame to the given orig_node and release a
+ * reference to this orig_node.
+ *
+ * Returns NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
*/
-int batadv_send_skb_generic_unicast(struct batadv_priv *bat_priv,
- struct sk_buff *skb, int packet_type,
- int packet_subtype,
- unsigned short vid)
+static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
+ struct sk_buff *skb, int packet_type,
+ int packet_subtype,
+ struct batadv_orig_node *orig_node,
+ unsigned short vid)
{
struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
struct batadv_unicast_packet *unicast_packet;
- struct batadv_orig_node *orig_node;
- int ret = NET_RX_DROP;
-
- /* get routing information */
- if (is_multicast_ether_addr(ethhdr->h_dest))
- orig_node = batadv_gw_get_selected_orig(bat_priv);
- else
- /* check for tt host - increases orig_node refcount.
- * returns NULL in case of AP isolation
- */
- orig_node = batadv_transtable_search(bat_priv, ethhdr->h_source,
- ethhdr->h_dest, vid);
+ int ret = NET_XMIT_DROP;
if (!orig_node)
goto out;
@@ -296,16 +292,67 @@ int batadv_send_skb_generic_unicast(struct batadv_priv *bat_priv,
unicast_packet->ttvn = unicast_packet->ttvn - 1;
if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
- ret = 0;
+ ret = NET_XMIT_SUCCESS;
out:
if (orig_node)
batadv_orig_node_free_ref(orig_node);
- if (ret == NET_RX_DROP)
+ if (ret == NET_XMIT_DROP)
kfree_skb(skb);
return ret;
}
+/**
+ * batadv_send_skb_via_tt_generic - send an skb via TT lookup
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: payload to send
+ * @packet_type: the batman unicast packet type to use
+ * @packet_subtype: the unicast 4addr packet subtype (only relevant for unicast
+ * 4addr packets)
+ * @vid: the vid to be used to search the translation table
+ *
+ * Look up the recipient node for the destination address in the ethernet
+ * header via the translation table. Wrap the given skb into a batman-adv
+ * unicast or unicast-4addr header depending on whether BATADV_UNICAST or
+ * BATADV_UNICAST_4ADDR was supplied as packet_type. Then send this frame
+ * to the according destination node.
+ *
+ * Returns NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
+ */
+int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
+ struct sk_buff *skb, int packet_type,
+ int packet_subtype, unsigned short vid)
+{
+ struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
+ struct batadv_orig_node *orig_node;
+
+ orig_node = batadv_transtable_search(bat_priv, ethhdr->h_source,
+ ethhdr->h_dest, vid);
+ return batadv_send_skb_unicast(bat_priv, skb, packet_type,
+ packet_subtype, orig_node, vid);
+}
+
+/**
+ * batadv_send_skb_via_gw - send an skb via gateway lookup
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: payload to send
+ * @vid: the vid to be used to search the translation table
+ *
+ * Look up the currently selected gateway. Wrap the given skb into a batman-adv
+ * unicast header and send this frame to this gateway node.
+ *
+ * Returns NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
+ */
+int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ unsigned short vid)
+{
+ struct batadv_orig_node *orig_node;
+
+ orig_node = batadv_gw_get_selected_orig(bat_priv);
+ return batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST, 0,
+ orig_node, vid);
+}
+
void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
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