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sfc: Run event/IRQ self-test asynchronously when interface is brought up

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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>
This commit is contained in:
Ben Hutchings
2012-02-28 23:40:21 +00:00
parent eee6f6a9e0
commit dd40781e3a
7 changed files with 51 additions and 7 deletions
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4
drivers/net/ethernet/sfc/nic.c
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@@ -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));
}