1/* 2 * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the 6 * Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * for more details. 13 * 14 * You should have received a copy of the GNU General Public License along 15 * with this program; if not, write to the Free Software Foundation, Inc., 16 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 * 18 * The full GNU General Public License is included in this distribution in the 19 * file called LICENSE. 20 * 21 */ 22 23#ifndef __BOND_ALB_H__ 24#define __BOND_ALB_H__ 25 26#include <linux/if_ether.h> 27 28struct bonding; 29struct slave; 30 31#define BOND_ALB_INFO(bond) ((bond)->alb_info) 32#define SLAVE_TLB_INFO(slave) ((slave)->tlb_info) 33 34struct tlb_client_info { 35 struct slave *tx_slave; /* A pointer to slave used for transmiting 36 * packets to a Client that the Hash function 37 * gave this entry index. 38 */ 39 u32 tx_bytes; /* Each Client acumulates the BytesTx that 40 * were tranmitted to it, and after each 41 * CallBack the LoadHistory is devided 42 * by the balance interval 43 */ 44 u32 load_history; /* This field contains the amount of Bytes 45 * that were transmitted to this client by 46 * the server on the previous balance 47 * interval in Bps. 48 */ 49 u32 next; /* The next Hash table entry index, assigned 50 * to use the same adapter for transmit. 51 */ 52 u32 prev; /* The previous Hash table entry index, 53 * assigned to use the same 54 */ 55}; 56 57/* ------------------------------------------------------------------------- 58 * struct rlb_client_info contains all info related to a specific rx client 59 * connection. This is the Clients Hash Table entry struct 60 * ------------------------------------------------------------------------- 61 */ 62struct rlb_client_info { 63 __be32 ip_src; /* the server IP address */ 64 __be32 ip_dst; /* the client IP address */ 65 u8 mac_dst[ETH_ALEN]; /* the client MAC address */ 66 u32 next; /* The next Hash table entry index */ 67 u32 prev; /* The previous Hash table entry index */ 68 u8 assigned; /* checking whether this entry is assigned */ 69 u8 ntt; /* flag - need to transmit client info */ 70 struct slave *slave; /* the slave assigned to this client */ 71 u8 tag; /* flag - need to tag skb */ 72 unsigned short vlan_id; /* VLAN tag associated with IP address */ 73}; 74 75struct tlb_slave_info { 76 u32 head; /* Index to the head of the bi-directional clients 77 * hash table entries list. The entries in the list 78 * are the entries that were assigned to use this 79 * slave for transmit. 80 */ 81 u32 load; /* Each slave sums the loadHistory of all clients 82 * assigned to it 83 */ 84}; 85 86struct alb_bond_info { 87 struct timer_list alb_timer; 88 struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */ 89 spinlock_t tx_hashtbl_lock; 90 u32 unbalanced_load; 91 int tx_rebalance_counter; 92 int lp_counter; 93 /* -------- rlb parameters -------- */ 94 int rlb_enabled; 95 struct packet_type rlb_pkt_type; 96 struct rlb_client_info *rx_hashtbl; /* Receive hash table */ 97 spinlock_t rx_hashtbl_lock; 98 u32 rx_hashtbl_head; 99 u8 rx_ntt; /* flag - need to transmit 100 * to all rx clients 101 */ 102 struct slave *next_rx_slave;/* next slave to be assigned 103 * to a new rx client for 104 */ 105 u32 rlb_interval_counter; 106 u8 primary_is_promisc; /* boolean */ 107 u32 rlb_promisc_timeout_counter;/* counts primary 108 * promiscuity time 109 */ 110 u32 rlb_update_delay_counter; 111 u32 rlb_update_retry_counter;/* counter of retries 112 * of client update 113 */ 114 u8 rlb_rebalance; /* flag - indicates that the 115 * rx traffic should be 116 * rebalanced 117 */ 118 struct vlan_entry *current_alb_vlan; 119}; 120 121int bond_alb_initialize(struct bonding *bond, int rlb_enabled); 122void bond_alb_deinitialize(struct bonding *bond); 123int bond_alb_init_slave(struct bonding *bond, struct slave *slave); 124void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave); 125void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link); 126void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave); 127int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev); 128void bond_alb_monitor(struct work_struct *); 129int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr); 130void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id); 131#endif /* __BOND_ALB_H__ */ 132 133