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bonding: make 802.3ad use latest lacp_rate 

There is bug that when you modify lacp_rate via sysfs,
802.3ad won't use the new value of lacp_rate to transmit packets.
This is because port->actor_oper_port_state isn't changed.

Signed-off-by: Weiping Pan <panweiping3@gmail.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter Pan(潘卫平) 2011-06-08 21:19:01 +00:00 committed by David S. Miller
parent b880a954b9
commit ba824a8b2d
3 changed files with 33 additions and 0 deletions
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31
drivers/net/bonding/bond_3ad.c
View File

@ -2473,3 +2473,34 @@ void bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond,
bond_3ad_rx_indication((struct lacpdu *) skb->data, slave, skb->len);
read_unlock(&bond->lock);
}
/*
* When modify lacp_rate parameter via sysfs,
* update actor_oper_port_state of each port.
*
* Hold slave->state_machine_lock,
* so we can modify port->actor_oper_port_state,
* no matter bond is up or down.
*/
void bond_3ad_update_lacp_rate(struct bonding *bond)
{
int i;
struct slave *slave;
struct port *port = NULL;
int lacp_fast;
read_lock(&bond->lock);
lacp_fast = bond->params.lacp_fast;
bond_for_each_slave(bond, slave, i) {
port = &(SLAVE_AD_INFO(slave).port);
__get_state_machine_lock(port);
if (lacp_fast)
port->actor_oper_port_state |= AD_STATE_LACP_TIMEOUT;
else
port->actor_oper_port_state &= ~AD_STATE_LACP_TIMEOUT;
__release_state_machine_lock(port);
}
read_unlock(&bond->lock);
}

1
drivers/net/bonding/bond_3ad.h
View File

@ -282,5 +282,6 @@ int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev);
void bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond,
struct slave *slave);
int bond_3ad_set_carrier(struct bonding *bond);
void bond_3ad_update_lacp_rate(struct bonding *bond);
#endif //__BOND_3AD_H__

1
drivers/net/bonding/bond_sysfs.c
View File

@ -804,6 +804,7 @@ static ssize_t bonding_store_lacp(struct device *d,
if ((new_value == 1) || (new_value == 0)) {
bond->params.lacp_fast = new_value;
bond_3ad_update_lacp_rate(bond);
pr_info("%s: Setting LACP rate to %s (%d).\n",
bond->dev->name, bond_lacp_tbl[new_value].modename,
new_value);