1/* 2 * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'. 3 * 4 * 5 * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes 6 * NCM: Network and Communications Management, Inc. 7 * 8 * BUT, I'm the one who modified it for ethernet, so: 9 * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov 10 * 11 * This software may be used and distributed according to the terms 12 * of the GNU Public License, incorporated herein by reference. 13 * 14 */ 15 16#ifndef _LINUX_IF_BONDING_H 17#define _LINUX_IF_BONDING_H 18 19#ifdef __KERNEL__ 20#include <linux/timer.h> 21#include <linux/if.h> 22#include <linux/proc_fs.h> 23#endif /* __KERNEL__ */ 24 25#include <linux/types.h> 26 27/* 28 * We can remove these ioctl definitions in 2.5. People should use the 29 * SIOC*** versions of them instead 30 */ 31#define BOND_ENSLAVE_OLD (SIOCDEVPRIVATE) 32#define BOND_RELEASE_OLD (SIOCDEVPRIVATE + 1) 33#define BOND_SETHWADDR_OLD (SIOCDEVPRIVATE + 2) 34#define BOND_SLAVE_INFO_QUERY_OLD (SIOCDEVPRIVATE + 11) 35#define BOND_INFO_QUERY_OLD (SIOCDEVPRIVATE + 12) 36#define BOND_CHANGE_ACTIVE_OLD (SIOCDEVPRIVATE + 13) 37 38#define BOND_CHECK_MII_STATUS (SIOCGMIIPHY) 39 40#define BOND_MODE_ROUNDROBIN 0 41#define BOND_MODE_ACTIVEBACKUP 1 42#define BOND_MODE_XOR 2 43 44/* each slave's link has 4 states */ 45#define BOND_LINK_UP 0 /* link is up and running */ 46#define BOND_LINK_FAIL 1 /* link has just gone down */ 47#define BOND_LINK_DOWN 2 /* link has been down for too long time */ 48#define BOND_LINK_BACK 3 /* link is going back */ 49 50/* each slave has several states */ 51#define BOND_STATE_ACTIVE 0 /* link is active */ 52#define BOND_STATE_BACKUP 1 /* link is backup */ 53 54#define BOND_DEFAULT_MAX_BONDS 1 /* Default maximum number of devices to support */ 55 56typedef struct ifbond { 57 __s32 bond_mode; 58 __s32 num_slaves; 59 __s32 miimon; 60} ifbond; 61 62typedef struct ifslave 63{ 64 __s32 slave_id; /* Used as an IN param to the BOND_SLAVE_INFO_QUERY ioctl */ 65 char slave_name[IFNAMSIZ]; 66 char link; 67 char state; 68 __u32 link_failure_count; 69} ifslave; 70 71#ifdef __KERNEL__ 72typedef struct slave { 73 struct slave *next; 74 struct slave *prev; 75 struct net_device *dev; 76 short delay; 77 char link; /* one of BOND_LINK_XXXX */ 78 char state; /* one of BOND_STATE_XXXX */ 79 unsigned short original_flags; 80 u32 link_failure_count; 81} slave_t; 82 83/* 84 * Here are the locking policies for the two bonding locks: 85 * 86 * 1) Get bond->lock when reading/writing slave list. 87 * 2) Get bond->ptrlock when reading/writing bond->current_slave. 88 * (It is unnecessary when the write-lock is put with bond->lock.) 89 * 3) When we lock with bond->ptrlock, we must lock with bond->lock 90 * beforehand. 91 */ 92typedef struct bonding { 93 slave_t *next; 94 slave_t *prev; 95 slave_t *current_slave; 96 __s32 slave_cnt; 97 rwlock_t lock; 98 rwlock_t ptrlock; 99 struct timer_list mii_timer; 100 struct timer_list arp_timer; 101 struct net_device_stats *stats; 102#ifdef CONFIG_PROC_FS 103 struct proc_dir_entry *bond_proc_dir; 104 struct proc_dir_entry *bond_proc_info_file; 105#endif /* CONFIG_PROC_FS */ 106 struct bonding *next_bond; 107 struct net_device *device; 108 struct dev_mc_list *mc_list; 109 unsigned short flags; 110} bonding_t; 111#endif /* __KERNEL__ */ 112 113#endif /* _LINUX_BOND_H */ 114 115/* 116 * Local variables: 117 * version-control: t 118 * kept-new-versions: 5 119 * c-indent-level: 8 120 * c-basic-offset: 8 121 * tab-width: 8 122 * End: 123 */ 124