/*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
/* Time, in seconds, before expiring a mac_entry due to inactivity. */
#define MAC_ENTRY_IDLE_TIME 60
+/* Time, in seconds, to lock an entry updated by a gratuitous ARP to avoid
+ * relearning based on a reflection from a bond slave. */
+#define MAC_GRAT_ARP_LOCK_TIME 5
+
+enum grat_arp_lock_type {
+ GRAT_ARP_LOCK_NONE,
+ GRAT_ARP_LOCK_SET,
+ GRAT_ARP_LOCK_CHECK
+};
+
/* A MAC learning table entry. */
struct mac_entry {
struct list hash_node; /* Element in a mac_learning 'table' list. */
struct list lru_node; /* Element in 'lrus' or 'free' list. */
time_t expires; /* Expiration time. */
+ time_t grat_arp_lock; /* Gratuitous ARP lock expiration time. */
uint8_t mac[ETH_ADDR_LEN]; /* Known MAC address. */
uint16_t vlan; /* VLAN tag. */
int port; /* Port on which MAC was most recently seen. */
front, most recently used at the back. */
struct list table[MAC_HASH_SIZE]; /* Hash table. */
struct mac_entry entries[MAC_MAX]; /* All entries. */
- uint32_t secret; /* Secret for */
- unsigned long *non_learning_vlans; /* Bitmap of learning disabled VLANs. */
+ uint32_t secret; /* Secret for randomizing hash table. */
+ unsigned long *flood_vlans; /* Bitmap of learning disabled VLANs. */
};
struct mac_learning *mac_learning_create(void);
void mac_learning_destroy(struct mac_learning *);
-bool mac_learning_set_disabled_vlans(struct mac_learning *,
- unsigned long *bitmap);
+bool mac_learning_set_flood_vlans(struct mac_learning *,
+ unsigned long *bitmap);
tag_type mac_learning_learn(struct mac_learning *,
const uint8_t src[ETH_ADDR_LEN], uint16_t vlan,
- uint16_t src_port);
+ uint16_t src_port, enum grat_arp_lock_type
+ lock_type);
int mac_learning_lookup(const struct mac_learning *,
- const uint8_t dst[ETH_ADDR_LEN], uint16_t vlan);
+ const uint8_t dst[ETH_ADDR_LEN], uint16_t vlan,
+ bool *is_grat_arp_locked);
int mac_learning_lookup_tag(const struct mac_learning *,
const uint8_t dst[ETH_ADDR_LEN],
- uint16_t vlan, tag_type *tag);
+ uint16_t vlan, tag_type *tag,
+ bool *is_grat_arp_locked);
void mac_learning_flush(struct mac_learning *);
void mac_learning_run(struct mac_learning *, struct tag_set *);
void mac_learning_wait(struct mac_learning *);