sfc: Run event/IRQ self-test asynchronously when interface is brought up
Generate a test event on each event queue whenever the interface is
brought up, then after 1 second check that we have either handled a
test event or handled another IRQ for each event queue.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 0b95505..27fe85f 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -325,7 +325,7 @@
* @eventq_mask: Event queue pointer mask
* @eventq_read_ptr: Event queue read pointer
* @last_eventq_read_ptr: Last event queue read pointer value.
- * @last_irq_cpu: Last CPU to handle interrupt for this channel
+ * @event_test_cpu: Last CPU to handle interrupt or test event for this channel
* @irq_count: Number of IRQs since last adaptive moderation decision
* @irq_mod_score: IRQ moderation score
* @rx_alloc_level: Watermark based heuristic counter for pushing descriptors
@@ -356,8 +356,8 @@
unsigned int eventq_mask;
unsigned int eventq_read_ptr;
unsigned int last_eventq_read_ptr;
+ int event_test_cpu;
- int last_irq_cpu;
unsigned int irq_count;
unsigned int irq_mod_score;
#ifdef CONFIG_RFS_ACCEL
@@ -678,6 +678,7 @@
* @irq_status: Interrupt status buffer
* @irq_zero_count: Number of legacy IRQs seen with queue flags == 0
* @irq_level: IRQ level/index for IRQs not triggered by an event queue
+ * @selftest_work: Work item for asynchronous self-test
* @mtd_list: List of MTDs attached to the NIC
* @nic_data: Hardware dependent state
* @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode,
@@ -791,6 +792,7 @@
struct efx_buffer irq_status;
unsigned irq_zero_count;
unsigned irq_level;
+ struct delayed_work selftest_work;
#ifdef CONFIG_SFC_MTD
struct list_head mtd_list;