diff options
| -rw-r--r-- | Documentation/networking/bonding.txt | 13 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 12 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_sysfs.c | 10 |
3 files changed, 23 insertions, 12 deletions
diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt index 1f45bd887d6..675612ff41a 100644 --- a/Documentation/networking/bonding.txt +++ b/Documentation/networking/bonding.txt @@ -770,8 +770,17 @@ resend_igmp a failover event. One membership report is issued immediately after the failover, subsequent packets are sent in each 200ms interval. - The valid range is 0 - 255; the default value is 1. This option - was added for bonding version 3.7.0. + The valid range is 0 - 255; the default value is 1. A value of 0 + prevents the IGMP membership report from being issued in response + to the failover event. + + This option is useful for bonding modes balance-rr (0), active-backup + (1), balance-tlb (5) and balance-alb (6), in which a failover can + switch the IGMP traffic from one slave to another. Therefore a fresh + IGMP report must be issued to cause the switch to forward the incoming + IGMP traffic over the newly selected slave. + + This option was added for bonding version 3.7.0. 3. Configuring Bonding Devices ============================== diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 9ec4a505a79..6141667c5fb 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -852,7 +852,7 @@ static void bond_resend_igmp_join_requests(struct bonding *bond) static void bond_resend_igmp_join_requests_delayed(struct work_struct *work) { struct bonding *bond = container_of(work, struct bonding, - mcast_work.work); + mcast_work.work); bond_resend_igmp_join_requests(bond); } @@ -1172,10 +1172,12 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active) } /* resend IGMP joins since active slave has changed or - * all were sent on curr_active_slave */ - if (((USES_PRIMARY(bond->params.mode) && new_active) || - bond->params.mode == BOND_MODE_ROUNDROBIN) && - netif_running(bond->dev)) { + * all were sent on curr_active_slave. + * resend only if bond is brought up with the affected + * bonding modes and the retransmission is enabled */ + if (netif_running(bond->dev) && (bond->params.resend_igmp > 0) && + ((USES_PRIMARY(bond->params.mode) && new_active) || + bond->params.mode == BOND_MODE_ROUNDROBIN)) { bond->igmp_retrans = bond->params.resend_igmp; queue_delayed_work(bond->wq, &bond->mcast_work, 0); } diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index bb1319f9f17..88fcb25e554 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -1533,8 +1533,8 @@ static DEVICE_ATTR(all_slaves_active, S_IRUGO | S_IWUSR, * Show and set the number of IGMP membership reports to send on link failure */ static ssize_t bonding_show_resend_igmp(struct device *d, - struct device_attribute *attr, - char *buf) + struct device_attribute *attr, + char *buf) { struct bonding *bond = to_bond(d); @@ -1542,8 +1542,8 @@ static ssize_t bonding_show_resend_igmp(struct device *d, } static ssize_t bonding_store_resend_igmp(struct device *d, - struct device_attribute *attr, - const char *buf, size_t count) + struct device_attribute *attr, + const char *buf, size_t count) { int new_value, ret = count; struct bonding *bond = to_bond(d); @@ -1555,7 +1555,7 @@ static ssize_t bonding_store_resend_igmp(struct device *d, goto out; } - if (new_value < 0) { + if (new_value < 0 || new_value > 255) { pr_err("%s: Invalid resend_igmp value %d not in range 0-255; rejected.\n", bond->dev->name, new_value); ret = -EINVAL; |