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 * Changes: 23 * 24 * 2003/08/06 - Amir Noam <amir.noam at intel dot com> 25 * - Add support for setting bond's MAC address with special 26 * handling required for ALB/TLB. 27 * 28 * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com> 29 * - Code cleanup and style changes 30 */ 31 32 #ifndef __BOND_ALB_H__ 33 #define __BOND_ALB_H__ 34 35 #include <linux/if_ether.h> 36 37 struct bonding; 38 struct slave; 39 40 #define BOND_ALB_INFO(bond) ((bond)->alb_info) 41 #define SLAVE_TLB_INFO(slave) ((slave)->tlb_info) 42 43 struct tlb_client_info { 44 struct slave *tx_slave; /* A pointer to slave used for transmiting 45 * packets to a Client that the Hash function 46 * gave this entry index. 47 */ 48 u32 tx_bytes; /* Each Client acumulates the BytesTx that 49 * were tranmitted to it, and after each 50 * CallBack the LoadHistory is devided 51 * by the balance interval 52 */ 53 u32 load_history; /* This field contains the amount of Bytes 54 * that were transmitted to this client by 55 * the server on the previous balance 56 * interval in Bps. 57 */ 58 u32 next; /* The next Hash table entry index, assigned 59 * to use the same adapter for transmit. 60 */ 61 u32 prev; /* The previous Hash table entry index, 62 * assigned to use the same 63 */ 64 }; 65 66 /* ------------------------------------------------------------------------- 67 * struct rlb_client_info contains all info related to a specific rx client 68 * connection. This is the Clients Hash Table entry struct 69 * ------------------------------------------------------------------------- 70 */ 71 struct rlb_client_info { 72 u32 ip_src; /* the server IP address */ 73 u32 ip_dst; /* the client IP address */ 74 u8 mac_dst[ETH_ALEN]; /* the client MAC address */ 75 u32 next; /* The next Hash table entry index */ 76 u32 prev; /* The previous Hash table entry index */ 77 u8 assigned; /* checking whether this entry is assigned */ 78 u8 ntt; /* flag - need to transmit client info */ 79 struct slave *slave; /* the slave assigned to this client */ 80 u8 tag; /* flag - need to tag skb */ 81 unsigned short vlan_id; /* VLAN tag associated with IP address */ 82 }; 83 84 struct tlb_slave_info { 85 u32 head; /* Index to the head of the bi-directional clients 86 * hash table entries list. The entries in the list 87 * are the entries that were assigned to use this 88 * slave for transmit. 89 */ 90 u32 load; /* Each slave sums the loadHistory of all clients 91 * assigned to it 92 */ 93 }; 94 95 struct alb_bond_info { 96 struct timer_list alb_timer; 97 struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */ 98 spinlock_t tx_hashtbl_lock; 99 u32 unbalanced_load; 100 int tx_rebalance_counter; 101 int lp_counter; 102 /* -------- rlb parameters -------- */ 103 int rlb_enabled; 104 struct packet_type rlb_pkt_type; 105 struct rlb_client_info *rx_hashtbl; /* Receive hash table */ 106 spinlock_t rx_hashtbl_lock; 107 u32 rx_hashtbl_head; 108 u8 rx_ntt; /* flag - need to transmit 109 * to all rx clients 110 */ 111 struct slave *next_rx_slave;/* next slave to be assigned 112 * to a new rx client for 113 */ 114 u32 rlb_interval_counter; 115 u8 primary_is_promisc; /* boolean */ 116 u32 rlb_promisc_timeout_counter;/* counts primary 117 * promiscuity time 118 */ 119 u32 rlb_update_delay_counter; 120 u32 rlb_update_retry_counter;/* counter of retries 121 * of client update 122 */ 123 u8 rlb_rebalance; /* flag - indicates that the 124 * rx traffic should be 125 * rebalanced 126 */ 127 struct vlan_entry *current_alb_vlan; 128 }; 129 130 int bond_alb_initialize(struct bonding *bond, int rlb_enabled); 131 void bond_alb_deinitialize(struct bonding *bond); 132 int bond_alb_init_slave(struct bonding *bond, struct slave *slave); 133 void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave); 134 void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link); 135 void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave); 136 int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev); 137 void bond_alb_monitor(struct bonding *bond); 138 int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr); 139 void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id); 140 #endif /* __BOND_ALB_H__ */ 141 142