[netdevice] Retain and report detailed error breakdowns

netdev_rx_err() and netdev_tx_complete_err() get passed the error
code, but currently use it only in debug messages.

Retain error numbers and frequencey counts for up to
NETDEV_MAX_UNIQUE_ERRORS (4) different errors for each of TX and RX.
This allows the "ifstat" command to report the reasons for TX/RX
errors in most cases, even in non-debug builds.

2 files changed, 18 insertions, 15 deletions

diff --git a/src/interface/efi/efi_snp.c b/src/interface/efi/efi_snp.c
index f84bf10e0..40136623b 100644
--- a/src/interface/efi/efi_snp.c
+++ b/src/interface/efi/efi_snp.c
@@ -317,14 +317,14 @@ efi_snp_statistics ( EFI_SIMPLE_NETWORK_PROTOCOL *snp, BOOLEAN reset,
 
 	/* Gather statistics */
 	memset ( &stats_buf, 0, sizeof ( stats_buf ) );
-	stats_buf.TxGoodFrames = snpdev->netdev->stats.tx_ok;
-	stats_buf.TxDroppedFrames = snpdev->netdev->stats.tx_err;
-	stats_buf.TxTotalFrames = ( snpdev->netdev->stats.tx_ok +
-				    snpdev->netdev->stats.tx_err );
-	stats_buf.RxGoodFrames = snpdev->netdev->stats.rx_ok;
-	stats_buf.RxDroppedFrames = snpdev->netdev->stats.rx_err;
-	stats_buf.RxTotalFrames = ( snpdev->netdev->stats.rx_ok +
-				    snpdev->netdev->stats.rx_err );
+	stats_buf.TxGoodFrames = snpdev->netdev->tx_stats.good;
+	stats_buf.TxDroppedFrames = snpdev->netdev->tx_stats.bad;
+	stats_buf.TxTotalFrames = ( snpdev->netdev->tx_stats.good +
+				    snpdev->netdev->tx_stats.bad );
+	stats_buf.RxGoodFrames = snpdev->netdev->rx_stats.good;
+	stats_buf.RxDroppedFrames = snpdev->netdev->rx_stats.bad;
+	stats_buf.RxTotalFrames = ( snpdev->netdev->rx_stats.good +
+				    snpdev->netdev->rx_stats.bad );
 	if ( *stats_len > sizeof ( stats_buf ) )
 		*stats_len = sizeof ( stats_buf );
 	if ( stats )
@@ -332,8 +332,10 @@ efi_snp_statistics ( EFI_SIMPLE_NETWORK_PROTOCOL *snp, BOOLEAN reset,
 
 	/* Reset statistics if requested to do so */
 	if ( reset ) {
-		memset ( &snpdev->netdev->stats, 0,
-			 sizeof ( snpdev->netdev->stats ) );
+		memset ( &snpdev->netdev->tx_stats, 0,
+			 sizeof ( snpdev->netdev->tx_stats ) );
+		memset ( &snpdev->netdev->rx_stats, 0,
+			 sizeof ( snpdev->netdev->rx_stats ) );
 	}
 
 	return 0;
diff --git a/src/interface/pxe/pxe_undi.c b/src/interface/pxe/pxe_undi.c
index f32106296..4e4a3da0c 100644
--- a/src/interface/pxe/pxe_undi.c
+++ b/src/interface/pxe/pxe_undi.c
@@ -392,10 +392,10 @@ PXENV_EXIT_t pxenv_undi_get_statistics ( struct s_PXENV_UNDI_GET_STATISTICS
 					 *undi_get_statistics ) {
 	DBG ( "PXENV_UNDI_GET_STATISTICS" );
 
-	undi_get_statistics->XmtGoodFrames = pxe_netdev->stats.tx_ok;
-	undi_get_statistics->RcvGoodFrames = pxe_netdev->stats.rx_ok;
-	undi_get_statistics->RcvCRCErrors = pxe_netdev->stats.rx_err;
-	undi_get_statistics->RcvResourceErrors = pxe_netdev->stats.rx_err;
+	undi_get_statistics->XmtGoodFrames = pxe_netdev->tx_stats.good;
+	undi_get_statistics->RcvGoodFrames = pxe_netdev->rx_stats.good;
+	undi_get_statistics->RcvCRCErrors = pxe_netdev->rx_stats.bad;
+	undi_get_statistics->RcvResourceErrors = pxe_netdev->rx_stats.bad;
 
 	undi_get_statistics->Status = PXENV_STATUS_SUCCESS;
 	return PXENV_EXIT_SUCCESS;
@@ -409,7 +409,8 @@ PXENV_EXIT_t pxenv_undi_clear_statistics ( struct s_PXENV_UNDI_CLEAR_STATISTICS
 					   *undi_clear_statistics ) {
 	DBG ( "PXENV_UNDI_CLEAR_STATISTICS" );
 
-	memset ( &pxe_netdev->stats, 0, sizeof ( pxe_netdev->stats ) );
+	memset ( &pxe_netdev->tx_stats, 0, sizeof ( pxe_netdev->tx_stats ) );
+	memset ( &pxe_netdev->rx_stats, 0, sizeof ( pxe_netdev->rx_stats ) );
 
 	undi_clear_statistics->Status = PXENV_STATUS_SUCCESS;
 	return PXENV_EXIT_SUCCESS;