#define ALB_TIMER_TICKS_PER_SEC 10 /* should be a divisor of HZ */ #define BOND_TLB_REBALANCE_INTERVAL 10 /* In seconds, periodic re-balancing. * Used for division - never set * to zero !!!
*/ #define BOND_ALB_DEFAULT_LP_INTERVAL 1 #define BOND_ALB_LP_INTERVAL(bond) (bond->params.lp_interval) /* In seconds, periodic send of * learning packets to the switch
*/
#define TLB_HASH_TABLE_SIZE 256 /* The size of the clients hash table. * Note that this value MUST NOT be smaller * because the key hash table is BYTE wide !
*/
#define TLB_NULL_INDEX 0xffffffff
/* rlb defs */ #define RLB_HASH_TABLE_SIZE 256 #define RLB_NULL_INDEX 0xffffffff #define RLB_UPDATE_DELAY (2*ALB_TIMER_TICKS_PER_SEC) /* 2 seconds */ #define RLB_ARP_BURST_SIZE 2 #define RLB_UPDATE_RETRY 3 /* 3-ticks - must be smaller than the rlb * rebalance interval (5 min).
*/ /* RLB_PROMISC_TIMEOUT = 10 sec equals the time that the current slave is * promiscuous after failover
*/ #define RLB_PROMISC_TIMEOUT (10*ALB_TIMER_TICKS_PER_SEC)
struct tlb_client_info { struct slave *tx_slave; /* A pointer to slave used for transmitting * packets to a Client that the Hash function * gave this entry index.
*/
u32 tx_bytes; /* Each Client accumulates the BytesTx that * were transmitted to it, and after each * CallBack the LoadHistory is divided * by the balance interval
*/
u32 load_history; /* This field contains the amount of Bytes * that were transmitted to this client by * the server on the previous balance * interval in Bps.
*/
u32 next; /* The next Hash table entry index, assigned * to use the same adapter for transmit.
*/
u32 prev; /* The previous Hash table entry index, * assigned to use the same
*/
};
/* ------------------------------------------------------------------------- * struct rlb_client_info contains all info related to a specific rx client * connection. This is the Clients Hash Table entry struct. * Note that this is not a proper hash table; if a new client's IP address * hash collides with an existing client entry, the old entry is replaced. * * There is a linked list (linked by the used_next and used_prev members) * linking all the used entries of the hash table. This allows updating * all the clients without walking over all the unused elements of the table. * * There are also linked lists of entries with identical hash(ip_src). These * allow cleaning up the table from ip_src<->mac_src associations that have * become outdated and would cause sending out invalid ARP updates to the * network. These are linked by the (src_next and src_prev members). * -------------------------------------------------------------------------
*/ struct rlb_client_info {
__be32 ip_src; /* the server IP address */
__be32 ip_dst; /* the client IP address */
u8 mac_src[ETH_ALEN]; /* the server MAC address */
u8 mac_dst[ETH_ALEN]; /* the client MAC address */
/* list of used hash table entries, starting at rx_hashtbl_used_head */
u32 used_next;
u32 used_prev;
/* ip_src based hashing */
u32 src_next; /* next entry with same hash(ip_src) */
u32 src_prev; /* prev entry with same hash(ip_src) */
u32 src_first; /* first entry with hash(ip_src) == this entry's index */
u8 assigned; /* checking whether this entry is assigned */
u8 ntt; /* flag - need to transmit client info */ struct slave *slave; /* the slave assigned to this client */ unsignedshort vlan_id; /* VLAN tag associated with IP address */
};
struct tlb_slave_info {
u32 head; /* Index to the head of the bi-directional clients * hash table entries list. The entries in the list * are the entries that were assigned to use this * slave for transmit.
*/
u32 load; /* Each slave sums the loadHistory of all clients * assigned to it
*/
};
struct alb_bond_info { struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */
u32 unbalanced_load;
atomic_t tx_rebalance_counter; int lp_counter; /* -------- rlb parameters -------- */ int rlb_enabled; struct rlb_client_info *rx_hashtbl; /* Receive hash table */
u32 rx_hashtbl_used_head;
u8 rx_ntt; /* flag - need to transmit * to all rx clients
*/ struct slave *rx_slave;/* last slave to xmit from */
u8 primary_is_promisc; /* boolean */
u32 rlb_promisc_timeout_counter;/* counts primary * promiscuity time
*/
u32 rlb_update_delay_counter;
u32 rlb_update_retry_counter;/* counter of retries * of client update
*/
u8 rlb_rebalance; /* flag - indicates that the * rx traffic should be * rebalanced
*/
};
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