[mirror_ubuntu-artful-kernel.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 "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(dev->priv_flags & IFF_IN_NETPOLL))
		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;
};

/*
 * 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 0;
}

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;
}

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