| /* |
| * 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/kobject.h> |
| #include <linux/in6.h> |
| #include "bond_3ad.h" |
| #include "bond_alb.h" |
| |
| #define DRV_VERSION "3.7.0-chelsio-1" |
| #define DRV_RELDATE "June 2, 2010" |
| #define DRV_NAME "bonding" |
| #define DRV_DESCRIPTION "Ethernet Channel Bonding Driver with Offload" |
| |
| #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) |
| |
| |
| 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; |
| }; |
| |
| 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; |
| #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; |
| #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) |
| struct in6_addr master_ipv6; |
| #endif |
| }; |
| |
| /** |
| * 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) { |
| break; |
| } |
| } |
| |
| return slave; |
| } |
| |
| static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
| { |
| if (!slave || !slave->dev->master) { |
| return NULL; |
| } |
| |
| return (struct bonding *)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_release_and_destroy(struct net_device *bond_dev, struct net_device *slave_dev); |
| 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 *); |
| |
| 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 */ |
