Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / batman-adv / distributed-arp-table.h

diff --git a/kernel/net/batman-adv/distributed-arp-table.h b/kernel/net/batman-adv/distributed-arp-table.h
new file mode 100644 (file)
index 0000000..2fe0764
--- /dev/null
+++ b/kernel/net/batman-adv/distributed-arp-table.h
@@ -0,0 +1,171 @@
+/* Copyright (C) 2011-2014 B.A.T.M.A.N. contributors:
+ *
+ * Antonio Quartulli
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
+#define _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
+
+#ifdef CONFIG_BATMAN_ADV_DAT
+
+#include "types.h"
+#include "originator.h"
+
+#include <linux/if_arp.h>
+
+/* BATADV_DAT_ADDR_MAX - maximum address value in the DHT space */
+#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
+
+void batadv_dat_status_update(struct net_device *net_dev);
+bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
+                                          struct sk_buff *skb);
+bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
+                                          struct sk_buff *skb, int hdr_size);
+void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
+                                        struct sk_buff *skb);
+bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
+                                        struct sk_buff *skb, int hdr_size);
+bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
+                                     struct batadv_forw_packet *forw_packet);
+
+/**
+ * batadv_dat_init_orig_node_addr - assign a DAT address to the orig_node
+ * @orig_node: the node to assign the DAT address to
+ */
+static inline void
+batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
+{
+       uint32_t addr;
+
+       addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX);
+       orig_node->dat_addr = (batadv_dat_addr_t)addr;
+}
+
+/**
+ * batadv_dat_init_own_addr - assign a DAT address to the node itself
+ * @bat_priv: the bat priv with all the soft interface information
+ * @primary_if: a pointer to the primary interface
+ */
+static inline void
+batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
+                        struct batadv_hard_iface *primary_if)
+{
+       uint32_t addr;
+
+       addr = batadv_choose_orig(primary_if->net_dev->dev_addr,
+                                 BATADV_DAT_ADDR_MAX);
+
+       bat_priv->dat.addr = (batadv_dat_addr_t)addr;
+}
+
+int batadv_dat_init(struct batadv_priv *bat_priv);
+void batadv_dat_free(struct batadv_priv *bat_priv);
+int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset);
+
+/**
+ * batadv_dat_inc_counter - increment the correct DAT packet counter
+ * @bat_priv: the bat priv with all the soft interface information
+ * @subtype: the 4addr subtype of the packet to be counted
+ *
+ * Updates the ethtool statistics for the received packet if it is a DAT subtype
+ */
+static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
+                                         uint8_t subtype)
+{
+       switch (subtype) {
+       case BATADV_P_DAT_DHT_GET:
+               batadv_inc_counter(bat_priv,
+                                  BATADV_CNT_DAT_GET_RX);
+               break;
+       case BATADV_P_DAT_DHT_PUT:
+               batadv_inc_counter(bat_priv,
+                                  BATADV_CNT_DAT_PUT_RX);
+               break;
+       }
+}
+
+#else
+
+static inline void batadv_dat_status_update(struct net_device *net_dev)
+{
+}
+
+static inline bool
+batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
+                                     struct sk_buff *skb)
+{
+       return false;
+}
+
+static inline bool
+batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
+                                     struct sk_buff *skb, int hdr_size)
+{
+       return false;
+}
+
+static inline bool
+batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
+                                   struct sk_buff *skb)
+{
+       return false;
+}
+
+static inline bool
+batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
+                                   struct sk_buff *skb, int hdr_size)
+{
+       return false;
+}
+
+static inline bool
+batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
+                                struct batadv_forw_packet *forw_packet)
+{
+       return false;
+}
+
+static inline void
+batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
+{
+}
+
+static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
+                                           struct batadv_hard_iface *iface)
+{
+}
+
+static inline void batadv_arp_change_timeout(struct net_device *soft_iface,
+                                            const char *name)
+{
+}
+
+static inline int batadv_dat_init(struct batadv_priv *bat_priv)
+{
+       return 0;
+}
+
+static inline void batadv_dat_free(struct batadv_priv *bat_priv)
+{
+}
+
+static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
+                                         uint8_t subtype)
+{
+}
+
+#endif /* CONFIG_BATMAN_ADV_DAT */
+
+#endif /* _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_ */