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Diffstat (limited to 'net/batman-adv/types.h')
-rw-r--r--net/batman-adv/types.h73
1 files changed, 73 insertions, 0 deletions
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index faaebd6c814..8ce16c1cbaf 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -28,6 +28,17 @@
(ETH_HLEN + max(sizeof(struct batadv_unicast_packet), \
sizeof(struct batadv_bcast_packet)))
+#ifdef CONFIG_BATMAN_ADV_DAT
+
+/* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed,
+ * BATADV_DAT_ADDR_MAX is changed as well.
+ *
+ * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
+ */
+#define batadv_dat_addr_t uint16_t
+
+#endif /* CONFIG_BATMAN_ADV_DAT */
+
/**
* struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data
* @ogm_buff: buffer holding the OGM packet
@@ -73,6 +84,9 @@ struct batadv_orig_node {
uint8_t orig[ETH_ALEN];
uint8_t primary_addr[ETH_ALEN];
struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
+#ifdef CONFIG_BATMAN_ADV_DAT
+ batadv_dat_addr_t dat_addr;
+#endif
unsigned long *bcast_own;
uint8_t *bcast_own_sum;
unsigned long last_seen;
@@ -172,6 +186,13 @@ enum batadv_counters {
BATADV_CNT_TT_RESPONSE_RX,
BATADV_CNT_TT_ROAM_ADV_TX,
BATADV_CNT_TT_ROAM_ADV_RX,
+#ifdef CONFIG_BATMAN_ADV_DAT
+ BATADV_CNT_DAT_GET_TX,
+ BATADV_CNT_DAT_GET_RX,
+ BATADV_CNT_DAT_PUT_TX,
+ BATADV_CNT_DAT_PUT_RX,
+ BATADV_CNT_DAT_CACHED_REPLY_TX,
+#endif
BATADV_CNT_NUM,
};
@@ -238,6 +259,20 @@ struct batadv_priv_vis {
struct batadv_vis_info *my_info;
};
+/**
+ * struct batadv_priv_dat - per mesh interface DAT private data
+ * @addr: node DAT address
+ * @hash: hashtable representing the local ARP cache
+ * @work: work queue callback item for cache purging
+ */
+#ifdef CONFIG_BATMAN_ADV_DAT
+struct batadv_priv_dat {
+ batadv_dat_addr_t addr;
+ struct batadv_hashtable *hash;
+ struct delayed_work work;
+};
+#endif
+
struct batadv_priv {
atomic_t mesh_state;
struct net_device_stats stats;
@@ -247,6 +282,9 @@ struct batadv_priv {
atomic_t fragmentation; /* boolean */
atomic_t ap_isolation; /* boolean */
atomic_t bridge_loop_avoidance; /* boolean */
+#ifdef CONFIG_BATMAN_ADV_DAT
+ atomic_t distributed_arp_table; /* boolean */
+#endif
atomic_t vis_mode; /* VIS_TYPE_* */
atomic_t gw_mode; /* GW_MODE_* */
atomic_t gw_sel_class; /* uint */
@@ -275,6 +313,9 @@ struct batadv_priv {
struct batadv_priv_gw gw;
struct batadv_priv_tt tt;
struct batadv_priv_vis vis;
+#ifdef CONFIG_BATMAN_ADV_DAT
+ struct batadv_priv_dat dat;
+#endif
};
struct batadv_socket_client {
@@ -447,4 +488,36 @@ struct batadv_algo_ops {
void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
};
+/**
+ * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
+ * is used to stored ARP entries needed for the global DAT cache
+ * @ip: the IPv4 corresponding to this DAT/ARP entry
+ * @mac_addr: the MAC address associated to the stored IPv4
+ * @last_update: time in jiffies when this entry was refreshed last time
+ * @hash_entry: hlist node for batadv_priv_dat::hash
+ * @refcount: number of contexts the object is used
+ * @rcu: struct used for freeing in an RCU-safe manner
+ */
+struct batadv_dat_entry {
+ __be32 ip;
+ uint8_t mac_addr[ETH_ALEN];
+ unsigned long last_update;
+ struct hlist_node hash_entry;
+ atomic_t refcount;
+ struct rcu_head rcu;
+};
+
+/**
+ * struct batadv_dat_candidate - candidate destination for DAT operations
+ * @type: the type of the selected candidate. It can one of the following:
+ * - BATADV_DAT_CANDIDATE_NOT_FOUND
+ * - BATADV_DAT_CANDIDATE_ORIG
+ * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
+ * corresponding originator node structure
+ */
+struct batadv_dat_candidate {
+ int type;
+ struct batadv_orig_node *orig_node;
+};
+
#endif /* _NET_BATMAN_ADV_TYPES_H_ */