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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c
index 4c47b7569145..4a9a5beec8fc 100644
--- a/drivers/net/ethernet/sfc/nic.c
+++ b/drivers/net/ethernet/sfc/nic.c
@@ -1083,7 +1083,7 @@ efx_handle_generated_event(struct efx_channel *channel, efx_qword_t *event)
         code = _EFX_CHANNEL_MAGIC_CODE(magic);
 
         if (magic == EFX_CHANNEL_MAGIC_TEST(channel)) {
-                /* ignore */
+                channel->event_test_cpu = raw_smp_processor_id();
         } else if (rx_queue && magic == EFX_CHANNEL_MAGIC_FILL(rx_queue)) {
                 /* The queue must be empty, so we won't receive any rx
                  * events, so efx_process_channel() won't refill the
@@ -1334,7 +1334,7 @@ void efx_nic_remove_eventq(struct efx_channel *channel)
 
 void efx_nic_event_test_start(struct efx_channel *channel)
 {
-        channel->last_irq_cpu = -1;
+        channel->event_test_cpu = -1;
         smp_wmb();
         efx_magic_event(channel, EFX_CHANNEL_MAGIC_TEST(channel));
 }