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, 34 insertions, 22 deletions

diff --git a/drivers/net/sfc/rx.c b/drivers/net/sfc/rx.c
index 9fb698e3519d..d9ed20ee0dc5 100644
--- a/drivers/net/sfc/rx.c
+++ b/drivers/net/sfc/rx.c
@@ -348,10 +348,11 @@ void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue)
 	if (space < EFX_RX_BATCH)
 		goto out;
 
-	EFX_TRACE(rx_queue->efx, "RX queue %d fast-filling descriptor ring from"
-		  " level %d to level %d using %s allocation\n",
-		  rx_queue->queue, fill_level, rx_queue->fast_fill_limit,
-		  channel->rx_alloc_push_pages ? "page" : "skb");
+	netif_vdbg(rx_queue->efx, rx_status, rx_queue->efx->net_dev,
+		   "RX queue %d fast-filling descriptor ring from"
+		   " level %d to level %d using %s allocation\n",
+		   rx_queue->queue, fill_level, rx_queue->fast_fill_limit,
+		   channel->rx_alloc_push_pages ? "page" : "skb");
 
 	do {
 		if (channel->rx_alloc_push_pages)
@@ -366,9 +367,10 @@ void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue)
 		}
 	} while ((space -= EFX_RX_BATCH) >= EFX_RX_BATCH);
 
-	EFX_TRACE(rx_queue->efx, "RX queue %d fast-filled descriptor ring "
-		  "to level %d\n", rx_queue->queue,
-		  rx_queue->added_count - rx_queue->removed_count);
+	netif_vdbg(rx_queue->efx, rx_status, rx_queue->efx->net_dev,
+		   "RX queue %d fast-filled descriptor ring "
+		   "to level %d\n", rx_queue->queue,
+		   rx_queue->added_count - rx_queue->removed_count);
 
  out:
 	if (rx_queue->notified_count != rx_queue->added_count)
@@ -402,10 +404,12 @@ static void efx_rx_packet__check_len(struct efx_rx_queue *rx_queue,
 	*discard = true;
 
 	if ((len > rx_buf->len) && EFX_WORKAROUND_8071(efx)) {
-		EFX_ERR_RL(efx, " RX queue %d seriously overlength "
-			   "RX event (0x%x > 0x%x+0x%x). Leaking\n",
-			   rx_queue->queue, len, max_len,
-			   efx->type->rx_buffer_padding);
+		if (net_ratelimit())
+			netif_err(efx, rx_err, efx->net_dev,
+				  " RX queue %d seriously overlength "
+				  "RX event (0x%x > 0x%x+0x%x). Leaking\n",
+				  rx_queue->queue, len, max_len,
+				  efx->type->rx_buffer_padding);
 		/* If this buffer was skb-allocated, then the meta
 		 * data at the end of the skb will be trashed. So
 		 * we have no choice but to leak the fragment.
@@ -413,8 +417,11 @@ static void efx_rx_packet__check_len(struct efx_rx_queue *rx_queue,
 		*leak_packet = (rx_buf->skb != NULL);
 		efx_schedule_reset(efx, RESET_TYPE_RX_RECOVERY);
 	} else {
-		EFX_ERR_RL(efx, " RX queue %d overlength RX event "
-			   "(0x%x > 0x%x)\n", rx_queue->queue, len, max_len);
+		if (net_ratelimit())
+			netif_err(efx, rx_err, efx->net_dev,
+				  " RX queue %d overlength RX event "
+				  "(0x%x > 0x%x)\n",
+				  rx_queue->queue, len, max_len);
 	}
 
 	rx_queue->channel->n_rx_overlength++;
@@ -502,11 +509,12 @@ void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
 	efx_rx_packet__check_len(rx_queue, rx_buf, len,
 				 &discard, &leak_packet);
 
-	EFX_TRACE(efx, "RX queue %d received id %x at %llx+%x %s%s\n",
-		  rx_queue->queue, index,
-		  (unsigned long long)rx_buf->dma_addr, len,
-		  (checksummed ? " [SUMMED]" : ""),
-		  (discard ? " [DISCARD]" : ""));
+	netif_vdbg(efx, rx_status, efx->net_dev,
+		   "RX queue %d received id %x at %llx+%x %s%s\n",
+		   rx_queue->queue, index,
+		   (unsigned long long)rx_buf->dma_addr, len,
+		   (checksummed ? " [SUMMED]" : ""),
+		   (discard ? " [DISCARD]" : ""));
 
 	/* Discard packet, if instructed to do so */
 	if (unlikely(discard)) {
@@ -621,7 +629,8 @@ int efx_probe_rx_queue(struct efx_rx_queue *rx_queue)
 	unsigned int rxq_size;
 	int rc;
 
-	EFX_LOG(efx, "creating RX queue %d\n", rx_queue->queue);
+	netif_dbg(efx, probe, efx->net_dev,
+		  "creating RX queue %d\n", rx_queue->queue);
 
 	/* Allocate RX buffers */
 	rxq_size = EFX_RXQ_SIZE * sizeof(*rx_queue->buffer);
@@ -641,7 +650,8 @@ void efx_init_rx_queue(struct efx_rx_queue *rx_queue)
 {
 	unsigned int max_fill, trigger, limit;
 
-	EFX_LOG(rx_queue->efx, "initialising RX queue %d\n", rx_queue->queue);
+	netif_dbg(rx_queue->efx, drv, rx_queue->efx->net_dev,
+		  "initialising RX queue %d\n", rx_queue->queue);
 
 	/* Initialise ptr fields */
 	rx_queue->added_count = 0;
@@ -668,7 +678,8 @@ void efx_fini_rx_queue(struct efx_rx_queue *rx_queue)
 	int i;
 	struct efx_rx_buffer *rx_buf;
 
-	EFX_LOG(rx_queue->efx, "shutting down RX queue %d\n", rx_queue->queue);
+	netif_dbg(rx_queue->efx, drv, rx_queue->efx->net_dev,
+		  "shutting down RX queue %d\n", rx_queue->queue);
 
 	del_timer_sync(&rx_queue->slow_fill);
 	efx_nic_fini_rx(rx_queue);
@@ -684,7 +695,8 @@ void efx_fini_rx_queue(struct efx_rx_queue *rx_queue)
 
 void efx_remove_rx_queue(struct efx_rx_queue *rx_queue)
 {
-	EFX_LOG(rx_queue->efx, "destroying RX queue %d\n", rx_queue->queue);
+	netif_dbg(rx_queue->efx, drv, rx_queue->efx->net_dev,
+		  "destroying RX queue %d\n", rx_queue->queue);
 
 	efx_nic_remove_rx(rx_queue);