Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/drivers/net/bonding/bond_alb.h
Version:
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1 /* 2 * Copyright(c) 1999 - 2003 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 #ifndef __BOND_ALB_H__ 23 #define __BOND_ALB_H__ 24 25 #include <linux/if_ether.h> 26 27 struct bonding; 28 struct slave; 29 30 #define BOND_ALB_INFO(bond) ((bond)->alb_info) 31 #define SLAVE_TLB_INFO(slave) ((slave)->tlb_info) 32 33 struct tlb_client_info { 34 struct slave *tx_slave; /* A pointer to slave used for transmiting 35 * packets to a Client that the Hash function 36 * gave this entry index. 37 */ 38 u32 tx_bytes; /* Each Client acumulates the BytesTx that 39 * were tranmitted to it, and after each 40 * CallBack the LoadHistory is devided 41 * by the balance interval 42 */ 43 u32 load_history; /* This field contains the amount of Bytes 44 * that were transmitted to this client by 45 * the server on the previous balance 46 * interval in Bps. 47 */ 48 u32 next; /* The next Hash table entry index, assigned 49 * to use the same adapter for transmit. 50 */ 51 u32 prev; /* The previous Hash table entry index, 52 * assigned to use the same 53 */ 54 }; 55 56 /* ------------------------------------------------------------------------- 57 * struct rlb_client_info contains all info related to a specific rx client 58 * connection. This is the Clients Hash Table entry struct 59 * ------------------------------------------------------------------------- 60 */ 61 struct rlb_client_info { 62 u32 ip_src; /* the server IP address */ 63 u32 ip_dst; /* the client IP address */ 64 u8 mac_dst[ETH_ALEN]; /* the client MAC address */ 65 u32 next; /* The next Hash table entry index */ 66 u32 prev; /* The previous Hash table entry index */ 67 u8 assigned; /* checking whether this entry is assigned */ 68 u8 ntt; /* flag - need to transmit client info */ 69 struct slave *slave; /* the slave assigned to this client */ 70 }; 71 72 struct tlb_slave_info { 73 u32 head; /* Index to the head of the bi-directional clients 74 * hash table entries list. The entries in the list 75 * are the entries that were assigned to use this 76 * slave for transmit. 77 */ 78 u32 load; /* Each slave sums the loadHistory of all clients 79 * assigned to it 80 */ 81 }; 82 83 struct alb_bond_info { 84 struct timer_list alb_timer; 85 struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */ 86 spinlock_t tx_hashtbl_lock; 87 u32 unbalanced_load; 88 int tx_rebalance_counter; 89 int lp_counter; 90 /* -------- rlb parameters -------- */ 91 int rlb_enabled; 92 struct packet_type rlb_pkt_type; 93 struct rlb_client_info *rx_hashtbl; /* Receive hash table */ 94 spinlock_t rx_hashtbl_lock; 95 u32 rx_hashtbl_head; 96 u8 rx_ntt; /* flag - need to transmit 97 * to all rx clients 98 */ 99 struct slave *next_rx_slave;/* next slave to be assigned 100 * to a new rx client for 101 */ 102 u32 rlb_interval_counter; 103 u8 primary_is_promisc; /* boolean */ 104 u32 rlb_promisc_timeout_counter;/* counts primary 105 * promiscuity time 106 */ 107 u32 rlb_update_delay_counter; 108 u32 rlb_update_retry_counter;/* counter of retries 109 * of client update 110 */ 111 u8 rlb_rebalance; /* flag - indicates that the 112 * rx traffic should be 113 * rebalanced 114 */ 115 }; 116 117 int bond_alb_initialize(struct bonding *bond, int rlb_enabled); 118 void bond_alb_deinitialize(struct bonding *bond); 119 int bond_alb_init_slave(struct bonding *bond, struct slave *slave); 120 void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave); 121 void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link); 122 void bond_alb_assign_current_slave(struct bonding *bond, struct slave *new_slave); 123 int bond_alb_xmit(struct sk_buff *skb, struct net_device *dev); 124 void bond_alb_monitor(struct bonding *bond); 125 126 #endif /* __BOND_ALB_H__ */ 127
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