diff options
Diffstat (limited to 'drivers/net/bonding/bonding.h')
| -rw-r--r-- | drivers/net/bonding/bonding.h | 353 |
1 files changed, 223 insertions, 130 deletions
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index 7ad8bd5cc94..0b4d9cde0b0 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -23,8 +23,11 @@ #include <linux/netpoll.h> #include <linux/inetdevice.h> #include <linux/etherdevice.h> +#include <linux/reciprocal_div.h> + #include "bond_3ad.h" #include "bond_alb.h" +#include "bond_options.h" #define DRV_VERSION "3.7.1" #define DRV_RELDATE "April 27, 2011" @@ -33,32 +36,12 @@ #define bond_version DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n" +#define BOND_MAX_VLAN_ENCAP 2 #define BOND_MAX_ARP_TARGETS 16 -#define IS_UP(dev) \ - ((((dev)->flags & IFF_UP) == IFF_UP) && \ - netif_running(dev) && \ - netif_carrier_ok(dev)) +#define BOND_DEFAULT_MIIMON 100 /* - * 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. @@ -71,64 +54,44 @@ set_fs(fs); \ res; }) +#define BOND_MODE(bond) ((bond)->params.mode) + /* slave list primitives */ -#define bond_to_slave(ptr) list_entry(ptr, struct slave, list) +#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) + +#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ #define bond_first_slave(bond) \ - list_first_entry_or_null(&(bond)->slave_list, struct slave, list) + (bond_has_slaves(bond) ? \ + netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ + NULL) #define bond_last_slave(bond) \ - (list_empty(&(bond)->slave_list) ? NULL : \ - bond_to_slave((bond)->slave_list.prev)) - -#define bond_is_first_slave(bond, pos) ((pos)->list.prev == &(bond)->slave_list) -#define bond_is_last_slave(bond, pos) ((pos)->list.next == &(bond)->slave_list) + (bond_has_slaves(bond) ? \ + netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ + NULL) -/* Since bond_first/last_slave can return NULL, these can return NULL too */ -#define bond_next_slave(bond, pos) \ - (bond_is_last_slave(bond, pos) ? bond_first_slave(bond) : \ - bond_to_slave((pos)->list.next)) - -#define bond_prev_slave(bond, pos) \ - (bond_is_first_slave(bond, pos) ? bond_last_slave(bond) : \ - bond_to_slave((pos)->list.prev)) +/* Caller must have rcu_read_lock */ +#define bond_first_slave_rcu(bond) \ + netdev_lower_get_first_private_rcu(bond->dev) -/** - * 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; pos && cnt < (bond)->slave_cnt; \ - cnt++, pos = bond_next_slave(bond, pos)) +#define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond)) +#define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond)) /** * bond_for_each_slave - iterate over all slaves * @bond: the bond holding this list * @pos: current slave + * @iter: list_head * iterator * * Caller must hold bond->lock */ -#define bond_for_each_slave(bond, pos) \ - list_for_each_entry(pos, &(bond)->slave_list, list) +#define bond_for_each_slave(bond, pos, iter) \ + netdev_for_each_lower_private((bond)->dev, pos, iter) /* Caller must have rcu_read_lock */ -#define bond_for_each_slave_rcu(bond, pos) \ - list_for_each_entry_rcu(pos, &(bond)->slave_list, list) - -/** - * bond_for_each_slave_reverse - iterate in reverse from a given position - * @bond: the bond holding this list - * @pos: slave to continue from - * - * Caller must hold bond->lock - */ -#define bond_for_each_slave_continue_reverse(bond, pos) \ - list_for_each_entry_continue_reverse(pos, &(bond)->slave_list, list) +#define bond_for_each_slave_rcu(bond, pos, iter) \ + netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) #ifdef CONFIG_NET_POLL_CONTROLLER extern atomic_t netpoll_block_tx; @@ -176,6 +139,10 @@ struct bond_params { int tx_queues; int all_slaves_active; int resend_igmp; + int lp_interval; + int packets_per_slave; + int tlb_dynamic_lb; + struct reciprocal_value reciprocal_packets_per_slave; }; struct bond_parm_tbl { @@ -183,32 +150,32 @@ struct bond_parm_tbl { int mode; }; -#define BOND_MAX_MODENAME_LEN 20 - struct slave { struct net_device *dev; /* first - useful for panic debug */ - struct list_head list; struct bonding *bond; /* our master */ int delay; - unsigned long jiffies; - unsigned long last_arp_rx; + /* all three in jiffies */ + unsigned long last_link_up; + unsigned long last_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 */ + inactive:1, /* indicates inactive slave */ + should_notify:1; /* indicateds whether the state changed */ 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 ad_slave_info *ad_info; struct tlb_slave_info tlb_info; #ifdef CONFIG_NET_POLL_CONTROLLER struct netpoll *np; #endif + struct kobject kobj; }; /* @@ -227,7 +194,6 @@ struct slave { */ struct bonding { struct net_device *dev; /* first - useful for panic debug */ - struct list_head slave_list; struct slave *curr_active_slave; struct slave *current_arp_slave; struct slave *primary_slave; @@ -244,8 +210,7 @@ struct bonding { 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; + u32 rr_tx_counter; struct ad_bond_info ad_info; struct alb_bond_info alb_info; struct bond_params params; @@ -267,6 +232,11 @@ struct bonding { #define bond_slave_get_rtnl(dev) \ ((struct slave *) rtnl_dereference(dev->rx_handler_data)) +struct bond_vlan_tag { + __be16 vlan_proto; + unsigned short vlan_id; +}; + /** * Returns NULL if the net_device does not belong to any of the bond's slaves * @@ -275,36 +245,106 @@ struct bonding { static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, struct net_device *slave_dev) { - struct slave *slave = NULL; - - bond_for_each_slave(bond, slave) - if (slave->dev == slave_dev) - return slave; - - return NULL; + return netdev_lower_dev_get_private(bond->dev, slave_dev); } 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_should_override_tx_queue(struct bonding *bond) +{ + return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || + BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; +} + static inline bool bond_is_lb(const struct bonding *bond) { - return (bond->params.mode == BOND_MODE_TLB || - bond->params.mode == BOND_MODE_ALB); + return BOND_MODE(bond) == BOND_MODE_TLB || + BOND_MODE(bond) == BOND_MODE_ALB; +} + +static inline bool bond_mode_uses_arp(int mode) +{ + return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && + mode != BOND_MODE_ALB; +} + +static inline bool bond_mode_uses_primary(int mode) +{ + return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || + mode == BOND_MODE_ALB; +} + +static inline bool bond_uses_primary(struct bonding *bond) +{ + return bond_mode_uses_primary(BOND_MODE(bond)); +} + +static inline bool bond_slave_is_up(struct slave *slave) +{ + return netif_running(slave->dev) && netif_carrier_ok(slave->dev); } static inline void bond_set_active_slave(struct slave *slave) { - slave->backup = 0; + if (slave->backup) { + slave->backup = 0; + rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); + } } static inline void bond_set_backup_slave(struct slave *slave) { - slave->backup = 1; + if (!slave->backup) { + slave->backup = 1; + rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); + } +} + +static inline void bond_set_slave_state(struct slave *slave, + int slave_state, bool notify) +{ + if (slave->backup == slave_state) + return; + + slave->backup = slave_state; + if (notify) { + rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); + slave->should_notify = 0; + } else { + if (slave->should_notify) + slave->should_notify = 0; + else + slave->should_notify = 1; + } +} + +static inline void bond_slave_state_change(struct bonding *bond) +{ + struct list_head *iter; + struct slave *tmp; + + bond_for_each_slave(bond, tmp, iter) { + if (tmp->link == BOND_LINK_UP) + bond_set_active_slave(tmp); + else if (tmp->link == BOND_LINK_DOWN) + bond_set_backup_slave(tmp); + } +} + +static inline void bond_slave_state_notify(struct bonding *bond) +{ + struct list_head *iter; + struct slave *tmp; + + bond_for_each_slave(bond, tmp, iter) { + if (tmp->should_notify) { + rtmsg_ifinfo(RTM_NEWLINK, tmp->dev, 0, GFP_ATOMIC); + tmp->should_notify = 0; + } + } } static inline int bond_slave_state(struct slave *slave) @@ -317,6 +357,12 @@ static inline bool bond_is_active_slave(struct slave *slave) return !bond_slave_state(slave); } +static inline bool bond_slave_can_tx(struct slave *slave) +{ + return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && + bond_is_active_slave(slave); +} + #define BOND_PRI_RESELECT_ALWAYS 0 #define BOND_PRI_RESELECT_BETTER 1 #define BOND_PRI_RESELECT_FAILURE 2 @@ -333,6 +379,14 @@ static inline bool bond_is_active_slave(struct slave *slave) #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ BOND_ARP_VALIDATE_BACKUP) +#define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) +#define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ + BOND_ARP_FILTER) +#define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ + BOND_ARP_FILTER) + +#define BOND_SLAVE_NOTIFY_NOW true +#define BOND_SLAVE_NOTIFY_LATER false static inline int slave_do_arp_validate(struct bonding *bond, struct slave *slave) @@ -340,6 +394,16 @@ static inline int slave_do_arp_validate(struct bonding *bond, return bond->params.arp_validate & (1 << bond_slave_state(slave)); } +static inline int slave_do_arp_validate_only(struct bonding *bond) +{ + return bond->params.arp_validate & BOND_ARP_FILTER; +} + +static inline int bond_is_ip_target_ok(__be32 addr) +{ + return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); +} + /* Get the oldest arp which we've received on this slave for bond's * arp_targets. */ @@ -359,14 +423,10 @@ static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 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; - } + if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) + return slave_oldest_target_arp_rx(bond, slave); - return slave->dev->last_rx; + return slave->last_rx; } #ifdef CONFIG_NET_POLL_CONTROLLER @@ -385,17 +445,19 @@ static inline void bond_netpoll_send_skb(const struct slave *slave, } #endif -static inline void bond_set_slave_inactive_flags(struct slave *slave) +static inline void bond_set_slave_inactive_flags(struct slave *slave, + bool notify) { if (!bond_is_lb(slave->bond)) - bond_set_backup_slave(slave); + bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); if (!slave->bond->params.all_slaves_active) slave->inactive = 1; } -static inline void bond_set_slave_active_flags(struct slave *slave) +static inline void bond_set_slave_active_flags(struct slave *slave, + bool notify) { - bond_set_active_slave(slave); + bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); slave->inactive = 0; } @@ -413,40 +475,32 @@ static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be3 in_dev = __in_dev_get_rcu(dev); if (in_dev) - addr = inet_confirm_addr(in_dev, dst, local, RT_SCOPE_HOST); - + addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, + RT_SCOPE_HOST); rcu_read_unlock(); return addr; } -static inline bool slave_can_tx(struct slave *slave) -{ - if (IS_UP(slave->dev) && slave->link == BOND_LINK_UP && - bond_is_active_slave(slave)) - return true; - else - return false; -} - -struct bond_net; +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; +}; int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); -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); -void bond_xmit_slave_id(struct bonding *bond, struct sk_buff *skb, int slave_id); +void 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_sysfs_slave_add(struct slave *slave); +void bond_sysfs_slave_del(struct slave *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); +u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 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); @@ -455,15 +509,16 @@ 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; -}; +void bond_setup(struct net_device *bond_dev); +unsigned int bond_get_num_tx_queues(void); +int bond_netlink_init(void); +void bond_netlink_fini(void); +struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); +struct net_device *bond_option_active_slave_get(struct bonding *bond); +const char *bond_slave_link_status(s8 link); +bool bond_verify_device_path(struct net_device *start_dev, + struct net_device *end_dev, + struct bond_vlan_tag *tags); #ifdef CONFIG_PROC_FS void bond_create_proc_entry(struct bonding *bond); @@ -491,15 +546,51 @@ static inline void bond_destroy_proc_dir(struct bond_net *bn) static inline struct slave *bond_slave_has_mac(struct bonding *bond, const u8 *mac) { + struct list_head *iter; + struct slave *tmp; + + bond_for_each_slave(bond, tmp, iter) + if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) + return tmp; + + return NULL; +} + +/* Caller must hold rcu_read_lock() for read */ +static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, + const u8 *mac) +{ + struct list_head *iter; struct slave *tmp; - bond_for_each_slave(bond, tmp) + bond_for_each_slave_rcu(bond, tmp, iter) if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) return tmp; return NULL; } +/* Caller must hold rcu_read_lock() for read */ +static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) +{ + struct list_head *iter; + struct slave *tmp; + struct netdev_hw_addr *ha; + + bond_for_each_slave_rcu(bond, tmp, iter) + if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) + return true; + + if (netdev_uc_empty(bond->dev)) + return false; + + netdev_for_each_uc_addr(ha, bond->dev) + if (ether_addr_equal_64bits(mac, ha->addr)) + return true; + + return false; +} + /* 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 */ @@ -519,7 +610,6 @@ static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) /* 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[]; @@ -527,4 +617,7 @@ 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[]; +/* exported from bond_netlink.c */ +extern struct rtnl_link_ops bond_link_ops; + #endif /* _LINUX_BONDING_H */ |