[linux-2.6-block.git] / drivers / net / bonding / bonding.h

/*
 * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
 *
 * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
 * NCM: Network and Communications Management, Inc.
 *
 * BUT, I'm the one who modified it for ethernet, so:
 * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
 *
 *	This software may be used and distributed according to the terms
 *	of the GNU Public License, incorporated herein by reference.
 *
 */

#ifndef _LINUX_BONDING_H
#define _LINUX_BONDING_H

#include <linux/timer.h>
#include <linux/proc_fs.h>
#include <linux/if_bonding.h>
#include <linux/cpumask.h>
#include <linux/in6.h>
#include <linux/netpoll.h>
#include "bond_3ad.h"
#include "bond_alb.h"

#define DRV_VERSION	"3.7.0"
#define DRV_RELDATE	"June 2, 2010"
#define DRV_NAME	"bonding"
#define DRV_DESCRIPTION	"Ethernet Channel Bonding Driver"

#define BOND_MAX_ARP_TARGETS	16

#define IS_UP(dev)					   \
	      ((((dev)->flags & IFF_UP) == IFF_UP)	&& \
	       netif_running(dev)			&& \
	       netif_carrier_ok(dev))

/*
 * Checks whether bond is ready for transmit.
 *
 * Caller must hold bond->lock
 */
#define BOND_IS_OK(bond)			     \
		   (((bond)->dev->flags & IFF_UP) && \
		    netif_running((bond)->dev)	  && \
		    ((bond)->slave_cnt > 0))

/*
 * Checks whether slave is ready for transmit.
 */
#define SLAVE_IS_OK(slave)			        \
		    (((slave)->dev->flags & IFF_UP)  && \
		     netif_running((slave)->dev)     && \
		     ((slave)->link == BOND_LINK_UP) && \
		     ((slave)->state == BOND_STATE_ACTIVE))


#define USES_PRIMARY(mode)				\
		(((mode) == BOND_MODE_ACTIVEBACKUP) ||	\
		 ((mode) == BOND_MODE_TLB)          ||	\
		 ((mode) == BOND_MODE_ALB))

#define TX_QUEUE_OVERRIDE(mode)				\
			(((mode) == BOND_MODE_ACTIVEBACKUP) ||	\
			 ((mode) == BOND_MODE_ROUNDROBIN))
/*
 * Less bad way to call ioctl from within the kernel; this needs to be
 * done some other way to get the call out of interrupt context.
 * Needs "ioctl" variable to be supplied by calling context.
 */
#define IOCTL(dev, arg, cmd) ({		\
	int res = 0;			\
	mm_segment_t fs = get_fs();	\
	set_fs(get_ds());		\
	res = ioctl(dev, arg, cmd);	\
	set_fs(fs);			\
	res; })

/**
 * bond_for_each_slave_from - iterate the slaves list from a starting point
 * @bond:	the bond holding this list.
 * @pos:	current slave.
 * @cnt:	counter for max number of moves
 * @start:	starting point.
 *
 * Caller must hold bond->lock
 */
#define bond_for_each_slave_from(bond, pos, cnt, start)	\
	for (cnt = 0, pos = start;				\
	     cnt < (bond)->slave_cnt;				\
             cnt++, pos = (pos)->next)

/**
 * bond_for_each_slave_from_to - iterate the slaves list from start point to stop point
 * @bond:	the bond holding this list.
 * @pos:	current slave.
 * @cnt:	counter for number max of moves
 * @start:	start point.
 * @stop:	stop point.
 *
 * Caller must hold bond->lock
 */
#define bond_for_each_slave_from_to(bond, pos, cnt, start, stop)	\
	for (cnt = 0, pos = start;					\
	     ((cnt < (bond)->slave_cnt) && (pos != (stop)->next));	\
             cnt++, pos = (pos)->next)

/**
 * bond_for_each_slave - iterate the slaves list from head
 * @bond:	the bond holding this list.
 * @pos:	current slave.
 * @cnt:	counter for max number of moves
 *
 * Caller must hold bond->lock
 */
#define bond_for_each_slave(bond, pos, cnt)	\
		bond_for_each_slave_from(bond, pos, cnt, (bond)->first_slave)


#ifdef CONFIG_NET_POLL_CONTROLLER
extern atomic_t netpoll_block_tx;

static inline void block_netpoll_tx(void)
{
	atomic_inc(&netpoll_block_tx);
}

static inline void unblock_netpoll_tx(void)
{
	atomic_dec(&netpoll_block_tx);
}

static inline int is_netpoll_tx_blocked(struct net_device *dev)
{
	if (unlikely(netpoll_tx_running(dev)))
		return atomic_read(&netpoll_block_tx);
	return 0;
}
#else
#define block_netpoll_tx()
#define unblock_netpoll_tx()
#define is_netpoll_tx_blocked(dev) (0)
#endif

struct bond_params {
	int mode;
	int xmit_policy;
	int miimon;
	int num_grat_arp;
	int num_unsol_na;
	int arp_interval;
	int arp_validate;
	int use_carrier;
	int fail_over_mac;
	int updelay;
	int downdelay;
	int lacp_fast;
	int ad_select;
	char primary[IFNAMSIZ];
	int primary_reselect;
	__be32 arp_targets[BOND_MAX_ARP_TARGETS];
	int tx_queues;
	int all_slaves_active;
	int resend_igmp;
};

struct bond_parm_tbl {
	char *modename;
	int mode;
};

#define BOND_MAX_MODENAME_LEN 20

struct vlan_entry {
	struct list_head vlan_list;
	__be32 vlan_ip;
	unsigned short vlan_id;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
	struct in6_addr vlan_ipv6;
#endif
};

struct slave {
	struct net_device *dev; /* first - useful for panic debug */
	struct slave *next;
	struct slave *prev;
	int    delay;
	unsigned long jiffies;
	unsigned long last_arp_rx;
	s8     link;    /* one of BOND_LINK_XXXX */
	s8     new_link;
	s8     state;   /* one of BOND_STATE_XXXX */
	u32    original_mtu;
	u32    link_failure_count;
	u8     perm_hwaddr[ETH_ALEN];
	u16    speed;
	u8     duplex;
	u16    queue_id;
	struct ad_slave_info ad_info; /* HUGE - better to dynamically alloc */
	struct tlb_slave_info tlb_info;
#ifdef CONFIG_NET_POLL_CONTROLLER
	struct netpoll *np;
#endif
};

/*
 * Link pseudo-state only used internally by monitors
 */
#define BOND_LINK_NOCHANGE -1

/*
 * Here are the locking policies for the two bonding locks:
 *
 * 1) Get bond->lock when reading/writing slave list.
 * 2) Get bond->curr_slave_lock when reading/writing bond->curr_active_slave.
 *    (It is unnecessary when the write-lock is put with bond->lock.)
 * 3) When we lock with bond->curr_slave_lock, we must lock with bond->lock
 *    beforehand.
 */
struct bonding {
	struct   net_device *dev; /* first - useful for panic debug */
	struct   slave *first_slave;
	struct   slave *curr_active_slave;
	struct   slave *current_arp_slave;
	struct   slave *primary_slave;
	bool     force_primary;
	s32      slave_cnt; /* never change this value outside the attach/detach wrappers */
	rwlock_t lock;
	rwlock_t curr_slave_lock;
	s8       kill_timers;
	s8	 send_grat_arp;
	s8	 send_unsol_na;
	s8	 setup_by_slave;
	s8       igmp_retrans;
#ifdef CONFIG_PROC_FS
	struct   proc_dir_entry *proc_entry;
	char     proc_file_name[IFNAMSIZ];
#endif /* CONFIG_PROC_FS */
	struct   list_head bond_list;
	struct   netdev_hw_addr_list mc_list;
	int      (*xmit_hash_policy)(struct sk_buff *, int);
	__be32   master_ip;
	u16      flags;
	u16      rr_tx_counter;
	struct   ad_bond_info ad_info;
	struct   alb_bond_info alb_info;
	struct   bond_params params;
	struct   list_head vlan_list;
	struct   vlan_group *vlgrp;
	struct   packet_type arp_mon_pt;
	struct   workqueue_struct *wq;
	struct   delayed_work mii_work;
	struct   delayed_work arp_work;
	struct   delayed_work alb_work;
	struct   delayed_work ad_work;
	struct   delayed_work mcast_work;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
	struct   in6_addr master_ipv6;
#endif
#ifdef CONFIG_DEBUG_FS
	/* debugging suport via debugfs */
	struct	 dentry *debug_dir;
#endif /* CONFIG_DEBUG_FS */
};

/**
 * Returns NULL if the net_device does not belong to any of the bond's slaves
 *
 * Caller must hold bond lock for read
 */
static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,
						  struct net_device *slave_dev)
{
	struct slave *slave = NULL;
	int i;

	bond_for_each_slave(bond, slave, i) {
		if (slave->dev == slave_dev) {
			return slave;
		}
	}

	return NULL;
}

static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
{
	if (!slave || !slave->dev->master) {
		return NULL;
	}

	return netdev_priv(slave->dev->master);
}

static inline bool bond_is_lb(const struct bonding *bond)
{
	return (bond->params.mode == BOND_MODE_TLB ||
		bond->params.mode == BOND_MODE_ALB);
}

#define BOND_PRI_RESELECT_ALWAYS	0
#define BOND_PRI_RESELECT_BETTER	1
#define BOND_PRI_RESELECT_FAILURE	2

#define BOND_FOM_NONE			0
#define BOND_FOM_ACTIVE			1
#define BOND_FOM_FOLLOW			2

#define BOND_ARP_VALIDATE_NONE		0
#define BOND_ARP_VALIDATE_ACTIVE	(1 << BOND_STATE_ACTIVE)
#define BOND_ARP_VALIDATE_BACKUP	(1 << BOND_STATE_BACKUP)
#define BOND_ARP_VALIDATE_ALL		(BOND_ARP_VALIDATE_ACTIVE | \
					 BOND_ARP_VALIDATE_BACKUP)

static inline int slave_do_arp_validate(struct bonding *bond,
					struct slave *slave)
{
	return bond->params.arp_validate & (1 << slave->state);
}

static inline unsigned long slave_last_rx(struct bonding *bond,
					struct slave *slave)
{
	if (slave_do_arp_validate(bond, slave))
		return slave->last_arp_rx;

	return slave->dev->last_rx;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
static inline void bond_netpoll_send_skb(const struct slave *slave,
					 struct sk_buff *skb)
{
	struct netpoll *np = slave->np;

	if (np)
		netpoll_send_skb(np, skb);
}
#else
static inline void bond_netpoll_send_skb(const struct slave *slave,
					 struct sk_buff *skb)
{
}
#endif

static inline void bond_set_slave_inactive_flags(struct slave *slave)
{
	struct bonding *bond = netdev_priv(slave->dev->master);
	if (!bond_is_lb(bond))
		slave->state = BOND_STATE_BACKUP;
	if (!bond->params.all_slaves_active)
		slave->dev->priv_flags |= IFF_SLAVE_INACTIVE;
	if (slave_do_arp_validate(bond, slave))
		slave->dev->priv_flags |= IFF_SLAVE_NEEDARP;
}

static inline void bond_set_slave_active_flags(struct slave *slave)
{
	slave->state = BOND_STATE_ACTIVE;
	slave->dev->priv_flags &= ~(IFF_SLAVE_INACTIVE | IFF_SLAVE_NEEDARP);
}

static inline void bond_set_master_3ad_flags(struct bonding *bond)
{
	bond->dev->priv_flags |= IFF_MASTER_8023AD;
}

static inline void bond_unset_master_3ad_flags(struct bonding *bond)
{
	bond->dev->priv_flags &= ~IFF_MASTER_8023AD;
}

static inline void bond_set_master_alb_flags(struct bonding *bond)
{
	bond->dev->priv_flags |= IFF_MASTER_ALB;
}

static inline void bond_unset_master_alb_flags(struct bonding *bond)
{
	bond->dev->priv_flags &= ~IFF_MASTER_ALB;
}

struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr);
int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
int bond_create(struct net *net, const char *name);
int bond_create_sysfs(void);
void bond_destroy_sysfs(void);
void bond_prepare_sysfs_group(struct bonding *bond);
int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave);
void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave);
int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev);
int bond_release(struct net_device *bond_dev, struct net_device *slave_dev);
void bond_mii_monitor(struct work_struct *);
void bond_loadbalance_arp_mon(struct work_struct *);
void bond_activebackup_arp_mon(struct work_struct *);
void bond_set_mode_ops(struct bonding *bond, int mode);
int bond_parse_parm(const char *mode_arg, const struct bond_parm_tbl *tbl);
void bond_select_active_slave(struct bonding *bond);
void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
void bond_register_arp(struct bonding *);
void bond_unregister_arp(struct bonding *);
void bond_create_debugfs(void);
void bond_destroy_debugfs(void);
void bond_debug_register(struct bonding *bond);
void bond_debug_unregister(struct bonding *bond);
void bond_debug_reregister(struct bonding *bond);

struct bond_net {
	struct net *		net;	/* Associated network namespace */
	struct list_head	dev_list;
#ifdef CONFIG_PROC_FS
	struct proc_dir_entry *	proc_dir;
#endif
};

/* exported from bond_main.c */
extern int bond_net_id;
extern const struct bond_parm_tbl bond_lacp_tbl[];
extern const struct bond_parm_tbl bond_mode_tbl[];
extern const struct bond_parm_tbl xmit_hashtype_tbl[];
extern const struct bond_parm_tbl arp_validate_tbl[];
extern const struct bond_parm_tbl fail_over_mac_tbl[];
extern const struct bond_parm_tbl pri_reselect_tbl[];
extern struct bond_parm_tbl ad_select_tbl[];

#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
void bond_send_unsolicited_na(struct bonding *bond);
void bond_register_ipv6_notifier(void);
void bond_unregister_ipv6_notifier(void);
#else
static inline void bond_send_unsolicited_na(struct bonding *bond)
{
	return;
}
static inline void bond_register_ipv6_notifier(void)
{
	return;
}
static inline void bond_unregister_ipv6_notifier(void)
{
	return;
}
#endif

#endif /* _LINUX_BONDING_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
	3	*
	4	* Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
	5	* NCM: Network and Communications Management, Inc.
	6	*
	7	* BUT, I'm the one who modified it for ethernet, so:
	8	* (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
	9	*
	10	* This software may be used and distributed according to the terms
	11	* of the GNU Public License, incorporated herein by reference.
	12	*
1da177e4 LT	13	*/
	14
	15	#ifndef _LINUX_BONDING_H
	16	#define _LINUX_BONDING_H
	17
	18	#include <linux/timer.h>
	19	#include <linux/proc_fs.h>
	20	#include <linux/if_bonding.h>
e843fa50	21	#include <linux/cpumask.h>
305d552a	22	#include <linux/in6.h>
8a8efa22	23	#include <linux/netpoll.h>
1da177e4 LT	24	#include "bond_3ad.h"
	25	#include "bond_alb.h"
	26
bb1d9123 AG	27	#define DRV_VERSION "3.7.0"
bb1d9123 AG	28	#define DRV_RELDATE "June 2, 2010"
1da177e4 LT	29	#define DRV_NAME "bonding"
	30	#define DRV_DESCRIPTION "Ethernet Channel Bonding Driver"
	31
	32	#define BOND_MAX_ARP_TARGETS 16
	33
1da177e4 LT	34	#define IS_UP(dev) \
	35	((((dev)->flags & IFF_UP) == IFF_UP) && \
	36	netif_running(dev) && \
	37	netif_carrier_ok(dev))
	38
	39	/*
	40	* Checks whether bond is ready for transmit.
	41	*
	42	* Caller must hold bond->lock
	43	*/
	44	#define BOND_IS_OK(bond) \
	45	(((bond)->dev->flags & IFF_UP) && \
	46	netif_running((bond)->dev) && \
	47	((bond)->slave_cnt > 0))
	48
	49	/*
	50	* Checks whether slave is ready for transmit.
	51	*/
	52	#define SLAVE_IS_OK(slave) \
	53	(((slave)->dev->flags & IFF_UP) && \
	54	netif_running((slave)->dev) && \
	55	((slave)->link == BOND_LINK_UP) && \
	56	((slave)->state == BOND_STATE_ACTIVE))
	57
	58
	59	#define USES_PRIMARY(mode) \
	60	(((mode) == BOND_MODE_ACTIVEBACKUP) \|\| \
	61	((mode) == BOND_MODE_TLB) \|\| \
	62	((mode) == BOND_MODE_ALB))
	63
bb1d9123 AG	64	#define TX_QUEUE_OVERRIDE(mode) \
	65	(((mode) == BOND_MODE_ACTIVEBACKUP) \|\| \
	66	((mode) == BOND_MODE_ROUNDROBIN))
1da177e4 LT	67	/*
	68	* Less bad way to call ioctl from within the kernel; this needs to be
	69	* done some other way to get the call out of interrupt context.
	70	* Needs "ioctl" variable to be supplied by calling context.
	71	*/
	72	#define IOCTL(dev, arg, cmd) ({ \
	73	int res = 0; \
	74	mm_segment_t fs = get_fs(); \
	75	set_fs(get_ds()); \
	76	res = ioctl(dev, arg, cmd); \
	77	set_fs(fs); \
	78	res; })
	79
	80	/**
	81	* bond_for_each_slave_from - iterate the slaves list from a starting point
	82	* @bond: the bond holding this list.
	83	* @pos: current slave.
	84	* @cnt: counter for max number of moves
	85	* @start: starting point.
	86	*
	87	* Caller must hold bond->lock
	88	*/
	89	#define bond_for_each_slave_from(bond, pos, cnt, start) \
	90	for (cnt = 0, pos = start; \
	91	cnt < (bond)->slave_cnt; \
	92	cnt++, pos = (pos)->next)
	93
	94	/**
	95	* bond_for_each_slave_from_to - iterate the slaves list from start point to stop point
	96	* @bond: the bond holding this list.
	97	* @pos: current slave.
	98	* @cnt: counter for number max of moves
	99	* @start: start point.
	100	* @stop: stop point.
	101	*
	102	* Caller must hold bond->lock
	103	*/
	104	#define bond_for_each_slave_from_to(bond, pos, cnt, start, stop) \
	105	for (cnt = 0, pos = start; \
	106	((cnt < (bond)->slave_cnt) && (pos != (stop)->next)); \
	107	cnt++, pos = (pos)->next)
	108
	109	/**
	110	* bond_for_each_slave - iterate the slaves list from head
	111	* @bond: the bond holding this list.
	112	* @pos: current slave.
	113	* @cnt: counter for max number of moves
	114	*
	115	* Caller must hold bond->lock
	116	*/
	117	#define bond_for_each_slave(bond, pos, cnt) \
	118	bond_for_each_slave_from(bond, pos, cnt, (bond)->first_slave)
	119
	120
e843fa50	121	#ifdef CONFIG_NET_POLL_CONTROLLER
fb4fa76a	122	extern atomic_t netpoll_block_tx;
e843fa50 NH	123
	124	static inline void block_netpoll_tx(void)
	125	{
fb4fa76a	126	atomic_inc(&netpoll_block_tx);
e843fa50 NH	127	}
	128
	129	static inline void unblock_netpoll_tx(void)
	130	{
fb4fa76a	131	atomic_dec(&netpoll_block_tx);
e843fa50 NH	132	}
	133
	134	static inline int is_netpoll_tx_blocked(struct net_device *dev)
	135	{
080e4130	136	if (unlikely(netpoll_tx_running(dev)))
fb4fa76a	137	return atomic_read(&netpoll_block_tx);
e843fa50 NH	138	return 0;
	139	}
	140	#else
	141	#define block_netpoll_tx()
	142	#define unblock_netpoll_tx()
	143	#define is_netpoll_tx_blocked(dev) (0)
	144	#endif
	145
1da177e4 LT	146	struct bond_params {
1da177e4 LT	147	int mode;
169a3e66	148	int xmit_policy;
1da177e4	149	int miimon;
7893b249	150	int num_grat_arp;
305d552a	151	int num_unsol_na;
1da177e4	152	int arp_interval;
f5b2b966	153	int arp_validate;
1da177e4	154	int use_carrier;
dd957c57	155	int fail_over_mac;
1da177e4 LT	156	int updelay;
	157	int downdelay;
	158	int lacp_fast;
fd989c83	159	int ad_select;
1da177e4	160	char primary[IFNAMSIZ];
a549952a	161	int primary_reselect;
d3bb52b0	162	__be32 arp_targets[BOND_MAX_ARP_TARGETS];
bb1d9123	163	int tx_queues;
ebd8e497	164	int all_slaves_active;
c2952c31	165	int resend_igmp;
1da177e4 LT	166	};
1da177e4 LT	167
12479f9a MW	168	struct bond_parm_tbl {
	169	char *modename;
	170	int mode;
	171	};
	172
ece95f7f JV	173	#define BOND_MAX_MODENAME_LEN 20
ece95f7f JV	174
1da177e4 LT	175	struct vlan_entry {
1da177e4 LT	176	struct list_head vlan_list;
d3bb52b0	177	__be32 vlan_ip;
1da177e4	178	unsigned short vlan_id;
305d552a BH	179	#if defined(CONFIG_IPV6) \|\| defined(CONFIG_IPV6_MODULE)
	180	struct in6_addr vlan_ipv6;
	181	#endif
1da177e4 LT	182	};
	183
	184	struct slave {
e944ef79	185	struct net_device dev; / first - useful for panic debug */
1da177e4 LT	186	struct slave *next;
1da177e4 LT	187	struct slave *prev;
8bb5f96b	188	int delay;
f8a8ccd5 AG	189	unsigned long jiffies;
f8a8ccd5 AG	190	unsigned long last_arp_rx;
1da177e4	191	s8 link; /* one of BOND_LINK_XXXX */
b2220cad	192	s8 new_link;
1da177e4	193	s8 state; /* one of BOND_STATE_XXXX */
3158bf7d	194	u32 original_mtu;
1da177e4	195	u32 link_failure_count;
885a136c	196	u8 perm_hwaddr[ETH_ALEN];
1da177e4 LT	197	u16 speed;
1da177e4 LT	198	u8 duplex;
bb1d9123	199	u16 queue_id;
1da177e4 LT	200	struct ad_slave_info ad_info; /* HUGE - better to dynamically alloc */
1da177e4 LT	201	struct tlb_slave_info tlb_info;
8a8efa22 AW	202	#ifdef CONFIG_NET_POLL_CONTROLLER
	203	struct netpoll *np;
	204	#endif
1da177e4 LT	205	};
1da177e4 LT	206
b2220cad JV	207	/*
	208	* Link pseudo-state only used internally by monitors
	209	*/
	210	#define BOND_LINK_NOCHANGE -1
	211
1da177e4 LT	212	/*
	213	* Here are the locking policies for the two bonding locks:
	214	*
	215	* 1) Get bond->lock when reading/writing slave list.
	216	* 2) Get bond->curr_slave_lock when reading/writing bond->curr_active_slave.
	217	* (It is unnecessary when the write-lock is put with bond->lock.)
	218	* 3) When we lock with bond->curr_slave_lock, we must lock with bond->lock
	219	* beforehand.
	220	*/
	221	struct bonding {
e944ef79	222	struct net_device dev; / first - useful for panic debug */
1da177e4 LT	223	struct slave *first_slave;
	224	struct slave *curr_active_slave;
	225	struct slave *current_arp_slave;
	226	struct slave *primary_slave;
a549952a	227	bool force_primary;
1da177e4 LT	228	s32 slave_cnt; /* never change this value outside the attach/detach wrappers */
	229	rwlock_t lock;
	230	rwlock_t curr_slave_lock;
1da177e4	231	s8 kill_timers;
1053f62c	232	s8 send_grat_arp;
305d552a	233	s8 send_unsol_na;
d90a162a	234	s8 setup_by_slave;
c2952c31	235	s8 igmp_retrans;
1da177e4 LT	236	#ifdef CONFIG_PROC_FS
	237	struct proc_dir_entry *proc_entry;
	238	char proc_file_name[IFNAMSIZ];
	239	#endif /* CONFIG_PROC_FS */
	240	struct list_head bond_list;
22bedad3	241	struct netdev_hw_addr_list mc_list;
a361c83c	242	int (xmit_hash_policy)(struct sk_buff , int);
d3bb52b0	243	__be32 master_ip;
1da177e4	244	u16 flags;
cf5f9044	245	u16 rr_tx_counter;
1da177e4 LT	246	struct ad_bond_info ad_info;
	247	struct alb_bond_info alb_info;
	248	struct bond_params params;
	249	struct list_head vlan_list;
	250	struct vlan_group *vlgrp;
f5b2b966	251	struct packet_type arp_mon_pt;
1b76b316 JV	252	struct workqueue_struct *wq;
	253	struct delayed_work mii_work;
	254	struct delayed_work arp_work;
	255	struct delayed_work alb_work;
	256	struct delayed_work ad_work;
5a37e8ca	257	struct delayed_work mcast_work;
305d552a BH	258	#if defined(CONFIG_IPV6) \|\| defined(CONFIG_IPV6_MODULE)
	259	struct in6_addr master_ipv6;
	260	#endif
f073c7ca TI	261	#ifdef CONFIG_DEBUG_FS
	262	/* debugging suport via debugfs */
	263	struct dentry *debug_dir;
	264	#endif /* CONFIG_DEBUG_FS */
1da177e4 LT	265	};
	266
	267	/**
	268	* Returns NULL if the net_device does not belong to any of the bond's slaves
	269	*
	270	* Caller must hold bond lock for read
	271	*/
4ec952b8	272	static inline struct slave bond_get_slave_by_dev(struct bonding bond,
4ec952b8	273	struct net_device *slave_dev)
1da177e4 LT	274	{
	275	struct slave *slave = NULL;
	276	int i;
	277
	278	bond_for_each_slave(bond, slave, i) {
	279	if (slave->dev == slave_dev) {
af3e5bd5	280	return slave;
1da177e4 LT	281	}
	282	}
	283
4ec952b8	284	return NULL;
1da177e4 LT	285	}
1da177e4 LT	286
cceb904f	287	static inline struct bonding bond_get_bond_by_slave(struct slave slave)
1da177e4 LT	288	{
	289	if (!slave \|\| !slave->dev->master) {
	290	return NULL;
	291	}
	292
c04914af	293	return netdev_priv(slave->dev->master);
1da177e4 LT	294	}
1da177e4 LT	295
58402054 HE	296	static inline bool bond_is_lb(const struct bonding *bond)
58402054 HE	297	{
8e95a202 JP	298	return (bond->params.mode == BOND_MODE_TLB \|\|
8e95a202 JP	299	bond->params.mode == BOND_MODE_ALB);
58402054 HE	300	}
58402054 HE	301
a549952a JP	302	#define BOND_PRI_RESELECT_ALWAYS 0
	303	#define BOND_PRI_RESELECT_BETTER 1
	304	#define BOND_PRI_RESELECT_FAILURE 2
	305
3915c1e8 JV	306	#define BOND_FOM_NONE 0
	307	#define BOND_FOM_ACTIVE 1
	308	#define BOND_FOM_FOLLOW 2
	309
f5b2b966 JV	310	#define BOND_ARP_VALIDATE_NONE 0
	311	#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
	312	#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
	313	#define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE \| \
	314	BOND_ARP_VALIDATE_BACKUP)
	315
079ca7da AB	316	static inline int slave_do_arp_validate(struct bonding *bond,
079ca7da AB	317	struct slave *slave)
f5b2b966 JV	318	{
	319	return bond->params.arp_validate & (1 << slave->state);
	320	}
	321
079ca7da	322	static inline unsigned long slave_last_rx(struct bonding *bond,
f8a8ccd5	323	struct slave *slave)
f5b2b966 JV	324	{
	325	if (slave_do_arp_validate(bond, slave))
	326	return slave->last_arp_rx;
	327
	328	return slave->dev->last_rx;
	329	}
	330
8a8efa22 AW	331	#ifdef CONFIG_NET_POLL_CONTROLLER
	332	static inline void bond_netpoll_send_skb(const struct slave *slave,
	333	struct sk_buff *skb)
	334	{
	335	struct netpoll *np = slave->np;
	336
	337	if (np)
	338	netpoll_send_skb(np, skb);
	339	}
	340	#else
	341	static inline void bond_netpoll_send_skb(const struct slave *slave,
	342	struct sk_buff *skb)
	343	{
	344	}
	345	#endif
	346
cceb904f	347	static inline void bond_set_slave_inactive_flags(struct slave *slave)
1da177e4	348	{
454d7c9b	349	struct bonding *bond = netdev_priv(slave->dev->master);
ae63e808	350	if (!bond_is_lb(bond))
8f903c70	351	slave->state = BOND_STATE_BACKUP;
ebd8e497 AG	352	if (!bond->params.all_slaves_active)
ebd8e497 AG	353	slave->dev->priv_flags \|= IFF_SLAVE_INACTIVE;
f5b2b966 JV	354	if (slave_do_arp_validate(bond, slave))
f5b2b966 JV	355	slave->dev->priv_flags \|= IFF_SLAVE_NEEDARP;
1da177e4 LT	356	}
1da177e4 LT	357
cceb904f	358	static inline void bond_set_slave_active_flags(struct slave *slave)
1da177e4 LT	359	{
1da177e4 LT	360	slave->state = BOND_STATE_ACTIVE;
f5b2b966	361	slave->dev->priv_flags &= ~(IFF_SLAVE_INACTIVE \| IFF_SLAVE_NEEDARP);
8f903c70 JV	362	}
	363
	364	static inline void bond_set_master_3ad_flags(struct bonding *bond)
	365	{
	366	bond->dev->priv_flags \|= IFF_MASTER_8023AD;
	367	}
	368
	369	static inline void bond_unset_master_3ad_flags(struct bonding *bond)
	370	{
	371	bond->dev->priv_flags &= ~IFF_MASTER_8023AD;
	372	}
	373
	374	static inline void bond_set_master_alb_flags(struct bonding *bond)
	375	{
	376	bond->dev->priv_flags \|= IFF_MASTER_ALB;
	377	}
	378
	379	static inline void bond_unset_master_alb_flags(struct bonding *bond)
	380	{
	381	bond->dev->priv_flags &= ~IFF_MASTER_ALB;
1da177e4 LT	382	}
	383
	384	struct vlan_entry bond_next_vlan(struct bonding bond, struct vlan_entry *curr);
	385	int bond_dev_queue_xmit(struct bonding bond, struct sk_buff skb, struct net_device *slave_dev);
ec87fd3b	386	int bond_create(struct net net, const char name);
b76cdba9 MW	387	int bond_create_sysfs(void);
b76cdba9 MW	388	void bond_destroy_sysfs(void);
6151b3d4	389	void bond_prepare_sysfs_group(struct bonding *bond);
b76cdba9 MW	390	int bond_create_slave_symlinks(struct net_device master, struct net_device slave);
b76cdba9 MW	391	void bond_destroy_slave_symlinks(struct net_device master, struct net_device slave);
a77b5325 MW	392	int bond_enslave(struct net_device bond_dev, struct net_device slave_dev);
a77b5325 MW	393	int bond_release(struct net_device bond_dev, struct net_device slave_dev);
1b76b316 JV	394	void bond_mii_monitor(struct work_struct *);
	395	void bond_loadbalance_arp_mon(struct work_struct *);
	396	void bond_activebackup_arp_mon(struct work_struct *);
a77b5325	397	void bond_set_mode_ops(struct bonding *bond, int mode);
325dcf7a	398	int bond_parse_parm(const char mode_arg, const struct bond_parm_tbl tbl);
a77b5325 MW	399	void bond_select_active_slave(struct bonding *bond);
a77b5325 MW	400	void bond_change_active_slave(struct bonding bond, struct slave new_active);
f5b2b966 JV	401	void bond_register_arp(struct bonding *);
f5b2b966 JV	402	void bond_unregister_arp(struct bonding *);
f073c7ca TI	403	void bond_create_debugfs(void);
	404	void bond_destroy_debugfs(void);
	405	void bond_debug_register(struct bonding *bond);
	406	void bond_debug_unregister(struct bonding *bond);
	407	void bond_debug_reregister(struct bonding *bond);
1da177e4	408
ec87fd3b EB	409	struct bond_net {
	410	struct net * net; /* Associated network namespace */
	411	struct list_head dev_list;
	412	#ifdef CONFIG_PROC_FS
	413	struct proc_dir_entry * proc_dir;
	414	#endif
	415	};
	416
b2259672	417	/* exported from bond_main.c */
ec87fd3b	418	extern int bond_net_id;
e97fd7c6 HE	419	extern const struct bond_parm_tbl bond_lacp_tbl[];
	420	extern const struct bond_parm_tbl bond_mode_tbl[];
	421	extern const struct bond_parm_tbl xmit_hashtype_tbl[];
	422	extern const struct bond_parm_tbl arp_validate_tbl[];
	423	extern const struct bond_parm_tbl fail_over_mac_tbl[];
a549952a	424	extern const struct bond_parm_tbl pri_reselect_tbl[];
b06715b7 HE	425	extern struct bond_parm_tbl ad_select_tbl[];
b06715b7 HE	426
305d552a BH	427	#if defined(CONFIG_IPV6) \|\| defined(CONFIG_IPV6_MODULE)
	428	void bond_send_unsolicited_na(struct bonding *bond);
	429	void bond_register_ipv6_notifier(void);
	430	void bond_unregister_ipv6_notifier(void);
	431	#else
	432	static inline void bond_send_unsolicited_na(struct bonding *bond)
	433	{
	434	return;
	435	}
	436	static inline void bond_register_ipv6_notifier(void)
	437	{
	438	return;
	439	}
	440	static inline void bond_unregister_ipv6_notifier(void)
	441	{
	442	return;
	443	}
	444	#endif
	445
1da177e4	446	#endif /* _LINUX_BONDING_H */