sfc: Implement message level control

Replace EFX_ERR() with netif_err(), EFX_INFO() with netif_info(),
EFX_LOG() with netif_dbg() and EFX_TRACE() and EFX_REGDUMP() with
netif_vdbg().

Replace EFX_ERR_RL(), EFX_INFO_RL() and EFX_LOG_RL() using explicit
calls to net_ratelimit().

Implement the ethtool operations to get and set message level flags,
and add a 'debug' module parameter for the initial value.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 73 insertions, 53 deletions

diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index 1f83404af63b..85f015f005d5 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -123,7 +123,7 @@ static int efx_test_interrupts(struct efx_nic *efx,
 {
 	struct efx_channel *channel;
 
-	EFX_LOG(efx, "testing interrupts\n");
+	netif_dbg(efx, drv, efx->net_dev, "testing interrupts\n");
 	tests->interrupt = -1;
 
 	/* Reset interrupt flag */
@@ -142,16 +142,17 @@ static int efx_test_interrupts(struct efx_nic *efx,
 	efx_nic_generate_interrupt(efx);
 
 	/* Wait for arrival of test interrupt. */
-	EFX_LOG(efx, "waiting for test interrupt\n");
+	netif_dbg(efx, drv, efx->net_dev, "waiting for test interrupt\n");
 	schedule_timeout_uninterruptible(HZ / 10);
 	if (efx->last_irq_cpu >= 0)
 		goto success;
 
-	EFX_ERR(efx, "timed out waiting for interrupt\n");
+	netif_err(efx, drv, efx->net_dev, "timed out waiting for interrupt\n");
 	return -ETIMEDOUT;
 
  success:
-	EFX_LOG(efx, "%s test interrupt seen on CPU%d\n", INT_MODE(efx),
+	netif_dbg(efx, drv, efx->net_dev, "%s test interrupt seen on CPU%d\n",
+		  INT_MODE(efx),
 		efx->last_irq_cpu);
 	tests->interrupt = 1;
 	return 0;
@@ -161,6 +162,7 @@ static int efx_test_interrupts(struct efx_nic *efx,
 static int efx_test_eventq_irq(struct efx_channel *channel,
 			       struct efx_self_tests *tests)
 {
+	struct efx_nic *efx = channel->efx;
 	unsigned int magic_count, count;
 
 	tests->eventq_dma[channel->channel] = -1;
@@ -185,29 +187,32 @@ static int efx_test_eventq_irq(struct efx_channel *channel,
 			goto eventq_ok;
 	} while (++count < 2);
 
-	EFX_ERR(channel->efx, "channel %d timed out waiting for event queue\n",
-		channel->channel);
+	netif_err(efx, drv, efx->net_dev,
+		  "channel %d timed out waiting for event queue\n",
+		  channel->channel);
 
 	/* See if interrupt arrived */
 	if (channel->efx->last_irq_cpu >= 0) {
-		EFX_ERR(channel->efx, "channel %d saw interrupt on CPU%d "
-			"during event queue test\n", channel->channel,
-			raw_smp_processor_id());
+		netif_err(efx, drv, efx->net_dev,
+			  "channel %d saw interrupt on CPU%d "
+			  "during event queue test\n", channel->channel,
+			  raw_smp_processor_id());
 		tests->eventq_int[channel->channel] = 1;
 	}
 
 	/* Check to see if event was received even if interrupt wasn't */
 	efx_process_channel_now(channel);
 	if (channel->magic_count != magic_count) {
-		EFX_ERR(channel->efx, "channel %d event was generated, but "
-			"failed to trigger an interrupt\n", channel->channel);
+		netif_err(efx, drv, efx->net_dev,
+			  "channel %d event was generated, but "
+			  "failed to trigger an interrupt\n", channel->channel);
 		tests->eventq_dma[channel->channel] = 1;
 	}
 
 	return -ETIMEDOUT;
  eventq_ok:
-	EFX_LOG(channel->efx, "channel %d event queue passed\n",
-		channel->channel);
+	netif_dbg(efx, drv, efx->net_dev, "channel %d event queue passed\n",
+		  channel->channel);
 	tests->eventq_dma[channel->channel] = 1;
 	tests->eventq_int[channel->channel] = 1;
 	tests->eventq_poll[channel->channel] = 1;
@@ -260,51 +265,57 @@ void efx_loopback_rx_packet(struct efx_nic *efx,
 
 	/* Check that header exists */
 	if (pkt_len < sizeof(received->header)) {
-		EFX_ERR(efx, "saw runt RX packet (length %d) in %s loopback "
-			"test\n", pkt_len, LOOPBACK_MODE(efx));
+		netif_err(efx, drv, efx->net_dev,
+			  "saw runt RX packet (length %d) in %s loopback "
+			  "test\n", pkt_len, LOOPBACK_MODE(efx));
 		goto err;
 	}
 
 	/* Check that the ethernet header exists */
 	if (memcmp(&received->header, &payload->header, ETH_HLEN) != 0) {
-		EFX_ERR(efx, "saw non-loopback RX packet in %s loopback test\n",
-			LOOPBACK_MODE(efx));
+		netif_err(efx, drv, efx->net_dev,
+			  "saw non-loopback RX packet in %s loopback test\n",
+			  LOOPBACK_MODE(efx));
 		goto err;
 	}
 
 	/* Check packet length */
 	if (pkt_len != sizeof(*payload)) {
-		EFX_ERR(efx, "saw incorrect RX packet length %d (wanted %d) in "
-			"%s loopback test\n", pkt_len, (int)sizeof(*payload),
-			LOOPBACK_MODE(efx));
+		netif_err(efx, drv, efx->net_dev,
+			  "saw incorrect RX packet length %d (wanted %d) in "
+			  "%s loopback test\n", pkt_len, (int)sizeof(*payload),
+			  LOOPBACK_MODE(efx));
 		goto err;
 	}
 
 	/* Check that IP header matches */
 	if (memcmp(&received->ip, &payload->ip, sizeof(payload->ip)) != 0) {
-		EFX_ERR(efx, "saw corrupted IP header in %s loopback test\n",
-			LOOPBACK_MODE(efx));
+		netif_err(efx, drv, efx->net_dev,
+			  "saw corrupted IP header in %s loopback test\n",
+			  LOOPBACK_MODE(efx));
 		goto err;
 	}
 
 	/* Check that msg and padding matches */
 	if (memcmp(&received->msg, &payload->msg, sizeof(received->msg)) != 0) {
-		EFX_ERR(efx, "saw corrupted RX packet in %s loopback test\n",
-			LOOPBACK_MODE(efx));
+		netif_err(efx, drv, efx->net_dev,
+			  "saw corrupted RX packet in %s loopback test\n",
+			  LOOPBACK_MODE(efx));
 		goto err;
 	}
 
 	/* Check that iteration matches */
 	if (received->iteration != payload->iteration) {
-		EFX_ERR(efx, "saw RX packet from iteration %d (wanted %d) in "
-			"%s loopback test\n", ntohs(received->iteration),
-			ntohs(payload->iteration), LOOPBACK_MODE(efx));
+		netif_err(efx, drv, efx->net_dev,
+			  "saw RX packet from iteration %d (wanted %d) in "
+			  "%s loopback test\n", ntohs(received->iteration),
+			  ntohs(payload->iteration), LOOPBACK_MODE(efx));
 		goto err;
 	}
 
 	/* Increase correct RX count */
-	EFX_TRACE(efx, "got loopback RX in %s loopback test\n",
-		  LOOPBACK_MODE(efx));
+	netif_vdbg(efx, drv, efx->net_dev,
+		   "got loopback RX in %s loopback test\n", LOOPBACK_MODE(efx));
 
 	atomic_inc(&state->rx_good);
 	return;
@@ -312,10 +323,10 @@ void efx_loopback_rx_packet(struct efx_nic *efx,
  err:
 #ifdef EFX_ENABLE_DEBUG
 	if (atomic_read(&state->rx_bad) == 0) {
-		EFX_ERR(efx, "received packet:\n");
+		netif_err(efx, drv, efx->net_dev, "received packet:\n");
 		print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
 			       buf_ptr, pkt_len, 0);
-		EFX_ERR(efx, "expected packet:\n");
+		netif_err(efx, drv, efx->net_dev, "expected packet:\n");
 		print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
 			       &state->payload, sizeof(state->payload), 0);
 	}
@@ -396,9 +407,11 @@ static int efx_begin_loopback(struct efx_tx_queue *tx_queue)
 			netif_tx_unlock_bh(efx->net_dev);
 
 		if (rc != NETDEV_TX_OK) {
-			EFX_ERR(efx, "TX queue %d could not transmit packet %d "
-				"of %d in %s loopback test\n", tx_queue->queue,
-				i + 1, state->packet_count, LOOPBACK_MODE(efx));
+			netif_err(efx, drv, efx->net_dev,
+				  "TX queue %d could not transmit packet %d of "
+				  "%d in %s loopback test\n", tx_queue->queue,
+				  i + 1, state->packet_count,
+				  LOOPBACK_MODE(efx));
 
 			/* Defer cleaning up the other skbs for the caller */
 			kfree_skb(skb);
@@ -454,20 +467,22 @@ static int efx_end_loopback(struct efx_tx_queue *tx_queue,
 		/* Don't free the skbs; they will be picked up on TX
 		 * overflow or channel teardown.
 		 */
-		EFX_ERR(efx, "TX queue %d saw only %d out of an expected %d "
-			"TX completion events in %s loopback test\n",
-			tx_queue->queue, tx_done, state->packet_count,
-			LOOPBACK_MODE(efx));
+		netif_err(efx, drv, efx->net_dev,
+			  "TX queue %d saw only %d out of an expected %d "
+			  "TX completion events in %s loopback test\n",
+			  tx_queue->queue, tx_done, state->packet_count,
+			  LOOPBACK_MODE(efx));
 		rc = -ETIMEDOUT;
 		/* Allow to fall through so we see the RX errors as well */
 	}
 
 	/* We may always be up to a flush away from our desired packet total */
 	if (rx_good != state->packet_count) {
-		EFX_LOG(efx, "TX queue %d saw only %d out of an expected %d "
-			"received packets in %s loopback test\n",
-			tx_queue->queue, rx_good, state->packet_count,
-			LOOPBACK_MODE(efx));
+		netif_dbg(efx, drv, efx->net_dev,
+			  "TX queue %d saw only %d out of an expected %d "
+			  "received packets in %s loopback test\n",
+			  tx_queue->queue, rx_good, state->packet_count,
+			  LOOPBACK_MODE(efx));
 		rc = -ETIMEDOUT;
 		/* Fall through */
 	}
@@ -499,9 +514,10 @@ efx_test_loopback(struct efx_tx_queue *tx_queue,
 			return -ENOMEM;
 		state->flush = false;
 
-		EFX_LOG(efx, "TX queue %d testing %s loopback with %d "
-			"packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
-			state->packet_count);
+		netif_dbg(efx, drv, efx->net_dev,
+			  "TX queue %d testing %s loopback with %d packets\n",
+			  tx_queue->queue, LOOPBACK_MODE(efx),
+			  state->packet_count);
 
 		efx_iterate_state(efx);
 		begin_rc = efx_begin_loopback(tx_queue);
@@ -525,9 +541,10 @@ efx_test_loopback(struct efx_tx_queue *tx_queue,
 		}
 	}
 
-	EFX_LOG(efx, "TX queue %d passed %s loopback test with a burst length "
-		"of %d packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
-		state->packet_count);
+	netif_dbg(efx, drv, efx->net_dev,
+		  "TX queue %d passed %s loopback test with a burst length "
+		  "of %d packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
+		  state->packet_count);
 
 	return 0;
 }
@@ -602,15 +619,17 @@ static int efx_test_loopbacks(struct efx_nic *efx, struct efx_self_tests *tests,
 		rc = __efx_reconfigure_port(efx);
 		mutex_unlock(&efx->mac_lock);
 		if (rc) {
-			EFX_ERR(efx, "unable to move into %s loopback\n",
-				LOOPBACK_MODE(efx));
+			netif_err(efx, drv, efx->net_dev,
+				  "unable to move into %s loopback\n",
+				  LOOPBACK_MODE(efx));
 			goto out;
 		}
 
 		rc = efx_wait_for_link(efx);
 		if (rc) {
-			EFX_ERR(efx, "loopback %s never came up\n",
-				LOOPBACK_MODE(efx));
+			netif_err(efx, drv, efx->net_dev,
+				  "loopback %s never came up\n",
+				  LOOPBACK_MODE(efx));
 			goto out;
 		}
 
@@ -718,7 +737,8 @@ int efx_selftest(struct efx_nic *efx, struct efx_self_tests *tests,
 		rc_reset = rc;
 
 	if (rc_reset) {
-		EFX_ERR(efx, "Unable to recover from chip test\n");
+		netif_err(efx, drv, efx->net_dev,
+			  "Unable to recover from chip test\n");
 		efx_schedule_reset(efx, RESET_TYPE_DISABLE);
 		return rc_reset;
 	}