diff options
Diffstat (limited to 'drivers/net/bonding/bond_3ad.c')
-rw-r--r-- | drivers/net/bonding/bond_3ad.c | 82 |
1 files changed, 47 insertions, 35 deletions
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index 6006c2e8fa2b..e58a1e0cadd2 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -84,11 +84,13 @@ enum ad_link_speed_type { static const u8 null_mac_addr[ETH_ALEN + 2] __long_aligned = { 0, 0, 0, 0, 0, 0 }; -static u16 ad_ticks_per_sec; + +static const u16 ad_ticks_per_sec = 1000 / AD_TIMER_INTERVAL; static const int ad_delta_in_ticks = (AD_TIMER_INTERVAL * HZ) / 1000; -static const u8 lacpdu_mcast_addr[ETH_ALEN + 2] __long_aligned = - MULTICAST_LACPDU_ADDR; +const u8 lacpdu_mcast_addr[ETH_ALEN + 2] __long_aligned = { + 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 +}; /* ================= main 802.3ad protocol functions ================== */ static int ad_lacpdu_send(struct port *port); @@ -225,7 +227,7 @@ static inline int __check_agg_selection_timer(struct port *port) if (bond == NULL) return 0; - return BOND_AD_INFO(bond).agg_select_timer ? 1 : 0; + return atomic_read(&BOND_AD_INFO(bond).agg_select_timer) ? 1 : 0; } /** @@ -1021,8 +1023,8 @@ static void ad_mux_machine(struct port *port, bool *update_slave_arr) if (port->aggregator && port->aggregator->is_active && !__port_is_enabled(port)) { - __enable_port(port); + *update_slave_arr = true; } } break; @@ -1779,6 +1781,7 @@ static void ad_agg_selection_logic(struct aggregator *agg, port = port->next_port_in_aggregator) { __enable_port(port); } + *update_slave_arr = true; } } @@ -1994,42 +1997,30 @@ static void ad_marker_response_received(struct bond_marker *marker, */ void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout) { - BOND_AD_INFO(bond).agg_select_timer = timeout; + atomic_set(&BOND_AD_INFO(bond).agg_select_timer, timeout); } /** * bond_3ad_initialize - initialize a bond's 802.3ad parameters and structures * @bond: bonding struct to work on - * @tick_resolution: tick duration (millisecond resolution) * * Can be called only after the mac address of the bond is set. */ -void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution) +void bond_3ad_initialize(struct bonding *bond) { - /* check that the bond is not initialized yet */ - if (!MAC_ADDRESS_EQUAL(&(BOND_AD_INFO(bond).system.sys_mac_addr), - bond->dev->dev_addr)) { - - BOND_AD_INFO(bond).aggregator_identifier = 0; - - BOND_AD_INFO(bond).system.sys_priority = - bond->params.ad_actor_sys_prio; - if (is_zero_ether_addr(bond->params.ad_actor_system)) - BOND_AD_INFO(bond).system.sys_mac_addr = - *((struct mac_addr *)bond->dev->dev_addr); - else - BOND_AD_INFO(bond).system.sys_mac_addr = - *((struct mac_addr *)bond->params.ad_actor_system); - - /* initialize how many times this module is called in one - * second (should be about every 100ms) - */ - ad_ticks_per_sec = tick_resolution; + BOND_AD_INFO(bond).aggregator_identifier = 0; + BOND_AD_INFO(bond).system.sys_priority = + bond->params.ad_actor_sys_prio; + if (is_zero_ether_addr(bond->params.ad_actor_system)) + BOND_AD_INFO(bond).system.sys_mac_addr = + *((struct mac_addr *)bond->dev->dev_addr); + else + BOND_AD_INFO(bond).system.sys_mac_addr = + *((struct mac_addr *)bond->params.ad_actor_system); - bond_3ad_initiate_agg_selection(bond, - AD_AGGREGATOR_SELECTION_TIMER * - ad_ticks_per_sec); - } + bond_3ad_initiate_agg_selection(bond, + AD_AGGREGATOR_SELECTION_TIMER * + ad_ticks_per_sec); } /** @@ -2227,7 +2218,8 @@ void bond_3ad_unbind_slave(struct slave *slave) temp_aggregator->num_of_ports--; if (__agg_active_ports(temp_aggregator) == 0) { select_new_active_agg = temp_aggregator->is_active; - ad_clear_agg(temp_aggregator); + if (temp_aggregator->num_of_ports == 0) + ad_clear_agg(temp_aggregator); if (select_new_active_agg) { slave_info(bond->dev, slave->dev, "Removing an active aggregator\n"); /* select new active aggregator */ @@ -2278,6 +2270,28 @@ void bond_3ad_update_ad_actor_settings(struct bonding *bond) } /** + * bond_agg_timer_advance - advance agg_select_timer + * @bond: bonding structure + * + * Return true when agg_select_timer reaches 0. + */ +static bool bond_agg_timer_advance(struct bonding *bond) +{ + int val, nval; + + while (1) { + val = atomic_read(&BOND_AD_INFO(bond).agg_select_timer); + if (!val) + return false; + nval = val - 1; + if (atomic_cmpxchg(&BOND_AD_INFO(bond).agg_select_timer, + val, nval) == val) + break; + } + return nval == 0; +} + +/** * bond_3ad_state_machine_handler - handle state machines timeout * @work: work context to fetch bonding struct to work on from * @@ -2312,9 +2326,7 @@ void bond_3ad_state_machine_handler(struct work_struct *work) if (!bond_has_slaves(bond)) goto re_arm; - /* check if agg_select_timer timer after initialize is timed out */ - if (BOND_AD_INFO(bond).agg_select_timer && - !(--BOND_AD_INFO(bond).agg_select_timer)) { + if (bond_agg_timer_advance(bond)) { slave = bond_first_slave_rcu(bond); port = slave ? &(SLAVE_AD_INFO(slave)->port) : NULL; |