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ipmi: Add a maintenance mode for IPMB messages
If you send a command to another BMC that might take some extra time, increase the timeouts temporarily. Signed-off-by: Corey Minyard <cminyard@mvista.com>
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@ -143,6 +143,12 @@ module_param(default_retry_ms, ulong, 0644);
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MODULE_PARM_DESC(default_retry_ms,
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"The time (milliseconds) between retry sends");
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/* The default timeout for maintenance mode message retries. */
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static unsigned long default_maintenance_retry_ms = 3000;
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module_param(default_maintenance_retry_ms, ulong, 0644);
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MODULE_PARM_DESC(default_maintenance_retry_ms,
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"The time (milliseconds) between retry sends in maintenance mode");
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/* The default maximum number of retries */
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static unsigned int default_max_retries = 4;
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module_param(default_max_retries, uint, 0644);
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@ -524,6 +530,13 @@ struct ipmi_smi {
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int auto_maintenance_timeout;
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spinlock_t maintenance_mode_lock; /* Used in a timer... */
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/*
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* If we are doing maintenance on something on IPMB, extend
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* the timeout time to avoid timeouts writing firmware and
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* such.
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*/
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int ipmb_maintenance_mode_timeout;
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/*
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* A cheap hack, if this is non-null and a message to an
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* interface comes in with a NULL user, call this routine with
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@ -1861,6 +1874,15 @@ static int i_ipmi_request(ipmi_user_t user,
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spin_lock_irqsave(&(intf->seq_lock), flags);
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if (is_maintenance_mode_cmd(msg))
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intf->ipmb_maintenance_mode_timeout =
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maintenance_mode_timeout_ms;
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if (intf->ipmb_maintenance_mode_timeout &&
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retry_time_ms == 0)
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/* Different default in maintenance mode */
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retry_time_ms = default_maintenance_retry_ms;
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/*
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* Create a sequence number with a 1 second
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* timeout and 4 retries.
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@ -4710,6 +4732,12 @@ static unsigned int ipmi_timeout_handler(ipmi_smi_t intf,
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*/
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INIT_LIST_HEAD(&timeouts);
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spin_lock_irqsave(&intf->seq_lock, flags);
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if (intf->ipmb_maintenance_mode_timeout) {
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if (intf->ipmb_maintenance_mode_timeout <= timeout_period)
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intf->ipmb_maintenance_mode_timeout = 0;
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else
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intf->ipmb_maintenance_mode_timeout -= timeout_period;
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}
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for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++)
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check_msg_timeout(intf, &(intf->seq_table[i]),
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&timeouts, timeout_period, i,
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