| /* |
| * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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/>. |
| * |
| * The full GNU General Public License is included in this distribution in the |
| * file called LICENSE. |
| * |
| */ |
| |
| #ifndef _NET_BOND_ALB_H |
| #define _NET_BOND_ALB_H |
| |
| #include <linux/if_ether.h> |
| |
| struct bonding; |
| struct slave; |
| |
| #define BOND_ALB_INFO(bond) ((bond)->alb_info) |
| #define SLAVE_TLB_INFO(slave) ((slave)->tlb_info) |
| |
| #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 BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \ |
| * ALB_TIMER_TICKS_PER_SEC) |
| |
| #define BOND_ALB_LP_TICKS(bond) (BOND_ALB_LP_INTERVAL(bond) \ |
| * ALB_TIMER_TICKS_PER_SEC) |
| |
| #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 transmiting |
| * 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 */ |
| unsigned short 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; |
| int 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 |
| */ |
| }; |
| |
| int bond_alb_initialize(struct bonding *bond, int rlb_enabled); |
| void bond_alb_deinitialize(struct bonding *bond); |
| int bond_alb_init_slave(struct bonding *bond, struct slave *slave); |
| void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave); |
| void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link); |
| void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave); |
| int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev); |
| int bond_tlb_xmit(struct sk_buff *skb, struct net_device *bond_dev); |
| void bond_alb_monitor(struct work_struct *); |
| int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr); |
| void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id); |
| #endif /* _NET_BOND_ALB_H */ |
| |