diff options
Diffstat (limited to 'drivers/net/bonding/bonding.h')
| -rw-r--r-- | drivers/net/bonding/bonding.h | 517 |
1 files changed, 0 insertions, 517 deletions
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h deleted file mode 100644 index 42d1c6599cba..000000000000 --- a/drivers/net/bonding/bonding.h +++ /dev/null @@ -1,517 +0,0 @@ -/* - * 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 <linux/inetdevice.h> -#include <linux/etherdevice.h> -#include "bond_3ad.h" -#include "bond_alb.h" - -#define DRV_VERSION "3.7.1" -#define DRV_RELDATE "April 27, 2011" -#define DRV_NAME "bonding" -#define DRV_DESCRIPTION "Ethernet Channel Bonding Driver" - -#define bond_version DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n" - -#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 slave is ready for transmit. - */ -#define SLAVE_IS_OK(slave) \ - (((slave)->dev->flags & IFF_UP) && \ - netif_running((slave)->dev) && \ - ((slave)->link == BOND_LINK_UP) && \ - bond_is_active_slave(slave)) - - -#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; - u8 num_peer_notif; - int arp_interval; - int arp_validate; - int arp_all_targets; - int use_carrier; - int fail_over_mac; - int updelay; - int downdelay; - int lacp_fast; - unsigned int min_links; - 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; - unsigned short vlan_id; -}; - -struct slave { - struct net_device *dev; /* first - useful for panic debug */ - struct slave *next; - struct slave *prev; - struct bonding *bond; /* our master */ - int delay; - unsigned long jiffies; - unsigned long last_arp_rx; - unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; - s8 link; /* one of BOND_LINK_XXXX */ - s8 new_link; - u8 backup:1, /* indicates backup slave. Value corresponds with - BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ - inactive:1; /* indicates inactive slave */ - u8 duplex; - u32 original_mtu; - u32 link_failure_count; - u32 speed; - u16 queue_id; - u8 perm_hwaddr[ETH_ALEN]; - 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 */ - int (*recv_probe)(const struct sk_buff *, struct bonding *, - struct slave *); - rwlock_t lock; - rwlock_t curr_slave_lock; - u8 send_peer_notif; - u8 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; - int (*xmit_hash_policy)(struct sk_buff *, int); - 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 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; -#ifdef CONFIG_DEBUG_FS - /* debugging support via debugfs */ - struct dentry *debug_dir; -#endif /* CONFIG_DEBUG_FS */ -}; - -static inline bool bond_vlan_used(struct bonding *bond) -{ - return !list_empty(&bond->vlan_list); -} - -#define bond_slave_get_rcu(dev) \ - ((struct slave *) rcu_dereference(dev->rx_handler_data)) - -#define bond_slave_get_rtnl(dev) \ - ((struct slave *) rtnl_dereference(dev->rx_handler_data)) - -/** - * 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->bond) - return NULL; - return slave->bond; -} - -static inline bool bond_is_lb(const struct bonding *bond) -{ - return (bond->params.mode == BOND_MODE_TLB || - bond->params.mode == BOND_MODE_ALB); -} - -static inline void bond_set_active_slave(struct slave *slave) -{ - slave->backup = 0; -} - -static inline void bond_set_backup_slave(struct slave *slave) -{ - slave->backup = 1; -} - -static inline int bond_slave_state(struct slave *slave) -{ - return slave->backup; -} - -static inline bool bond_is_active_slave(struct slave *slave) -{ - return !bond_slave_state(slave); -} - -#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_TARGETS_ANY 0 -#define BOND_ARP_TARGETS_ALL 1 - -#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 << bond_slave_state(slave)); -} - -/* Get the oldest arp which we've received on this slave for bond's - * arp_targets. - */ -static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, - struct slave *slave) -{ - int i = 1; - unsigned long ret = slave->target_last_arp_rx[0]; - - for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) - if (time_before(slave->target_last_arp_rx[i], ret)) - ret = slave->target_last_arp_rx[i]; - - return ret; -} - -static inline unsigned long slave_last_rx(struct bonding *bond, - struct slave *slave) -{ - if (slave_do_arp_validate(bond, slave)) { - if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) - return slave_oldest_target_arp_rx(bond, slave); - else - 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) -{ - if (!bond_is_lb(slave->bond)) - bond_set_backup_slave(slave); - if (!slave->bond->params.all_slaves_active) - slave->inactive = 1; -} - -static inline void bond_set_slave_active_flags(struct slave *slave) -{ - bond_set_active_slave(slave); - slave->inactive = 0; -} - -static inline bool bond_is_slave_inactive(struct slave *slave) -{ - return slave->inactive; -} - -static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) -{ - struct in_device *in_dev; - __be32 addr = 0; - - rcu_read_lock(); - in_dev = __in_dev_get_rcu(dev); - - if (in_dev) - addr = inet_confirm_addr(in_dev, dst, local, RT_SCOPE_HOST); - - rcu_read_unlock(); - return addr; -} - -struct bond_net; - -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(struct bond_net *net); -void bond_destroy_sysfs(struct bond_net *net); -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_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); -const char *bond_mode_name(int mode); - -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 - struct class_attribute class_attr_bonding_masters; -}; - -#ifdef CONFIG_PROC_FS -void bond_create_proc_entry(struct bonding *bond); -void bond_remove_proc_entry(struct bonding *bond); -void bond_create_proc_dir(struct bond_net *bn); -void bond_destroy_proc_dir(struct bond_net *bn); -#else -static inline void bond_create_proc_entry(struct bonding *bond) -{ -} - -static inline void bond_remove_proc_entry(struct bonding *bond) -{ -} - -static inline void bond_create_proc_dir(struct bond_net *bn) -{ -} - -static inline void bond_destroy_proc_dir(struct bond_net *bn) -{ -} -#endif - -static inline struct slave *bond_slave_has_mac(struct bonding *bond, - const u8 *mac) -{ - int i = 0; - struct slave *tmp; - - bond_for_each_slave(bond, tmp, i) - if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) - return tmp; - - return NULL; -} - -/* Check if the ip is present in arp ip list, or first free slot if ip == 0 - * Returns -1 if not found, index if found - */ -static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) -{ - int i; - - for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) - if (targets[i] == ip) - return i; - else if (targets[i] == 0) - break; - - return -1; -} - -/* 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 arp_all_targets_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[]; - -#endif /* _LINUX_BONDING_H */ |
