[intelxl] Show virtual function packet statistics for debugging

Signed-off-by: Michael Brown <mcb30@ipxe.org>

2 files changed, 88 insertions, 0 deletions

diff --git a/src/drivers/net/intelxlvf.c b/src/drivers/net/intelxlvf.c
index 3567be456..c58520a6f 100644
--- a/src/drivers/net/intelxlvf.c
+++ b/src/drivers/net/intelxlvf.c
@@ -391,6 +391,57 @@ static int intelxlvf_admin_get_resources ( struct net_device *netdev ) {
 	return 0;
 }
 
+/**
+ * Get statistics (for debugging)
+ *
+ * @v netdev		Network device
+ * @ret rc		Return status code
+ */
+static int intelxlvf_admin_stats ( struct net_device *netdev ) {
+	struct intelxl_nic *intelxl = netdev->priv;
+	struct intelxlvf_admin_descriptor *cmd;
+	union intelxlvf_admin_buffer *buf;
+	struct intelxlvf_admin_stats *tx;
+	struct intelxlvf_admin_stats *rx;
+	int rc;
+
+	/* Populate descriptor */
+	cmd = intelxlvf_admin_command_descriptor ( intelxl );
+	cmd->vopcode = cpu_to_le32 ( INTELXLVF_ADMIN_GET_STATS );
+	cmd->flags = cpu_to_le16 ( INTELXL_ADMIN_FL_RD | INTELXL_ADMIN_FL_BUF );
+	cmd->len = cpu_to_le16 ( sizeof ( buf->queues ) );
+	buf = intelxlvf_admin_command_buffer ( intelxl );
+	buf->queues.vsi = cpu_to_le16 ( intelxl->vsi );
+	tx = &buf->stats.tx;
+	rx = &buf->stats.rx;
+
+	/* Issue command */
+	if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
+		return rc;
+	DBGC ( intelxl, "INTELXL %p TX bytes %#llx discards %#llx errors "
+	       "%#llx\n", intelxl,
+	       ( ( unsigned long long ) le64_to_cpu ( tx->bytes ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( tx->discards ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( tx->errors ) ) );
+	DBGC ( intelxl, "INTELXL %p TX unicasts %#llx multicasts %#llx "
+	       "broadcasts %#llx\n", intelxl,
+	       ( ( unsigned long long ) le64_to_cpu ( tx->unicasts ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( tx->multicasts ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( tx->broadcasts ) ) );
+	DBGC ( intelxl, "INTELXL %p RX bytes %#llx discards %#llx errors "
+	       "%#llx\n", intelxl,
+	       ( ( unsigned long long ) le64_to_cpu ( rx->bytes ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( rx->discards ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( rx->errors ) ) );
+	DBGC ( intelxl, "INTELXL %p RX unicasts %#llx multicasts %#llx "
+	       "broadcasts %#llx\n", intelxl,
+	       ( ( unsigned long long ) le64_to_cpu ( rx->unicasts ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( rx->multicasts ) ),
+	       ( ( unsigned long long ) le64_to_cpu ( rx->broadcasts ) ) );
+
+	return 0;
+}
+
 /******************************************************************************
  *
  * Network device interface
@@ -565,6 +616,10 @@ static int intelxlvf_open ( struct net_device *netdev ) {
 	if ( ( rc = intelxlvf_admin_promisc ( netdev ) ) != 0 )
 		goto err_promisc;
 
+	/* Reset statistics counters (if debugging) */
+	if ( DBG_LOG )
+		intelxlvf_admin_stats ( netdev );
+
 	return 0;
 
  err_promisc:
@@ -588,6 +643,10 @@ static void intelxlvf_close ( struct net_device *netdev ) {
 	struct intelxl_nic *intelxl = netdev->priv;
 	int rc;
 
+	/* Show statistics (if debugging) */
+	if ( DBG_LOG )
+		intelxlvf_admin_stats ( netdev );
+
 	/* Disable queues */
 	if ( ( rc = intelxlvf_admin_queues ( netdev, 0 ) ) != 0 ) {
 		/* Leak memory; there's nothing else we can do */
diff --git a/src/drivers/net/intelxlvf.h b/src/drivers/net/intelxlvf.h
index 5c2227577..c537f6a15 100644
--- a/src/drivers/net/intelxlvf.h
+++ b/src/drivers/net/intelxlvf.h
@@ -253,6 +253,33 @@ struct intelxlvf_admin_promisc_buffer {
 	uint16_t flags;
 } __attribute__ (( packed ));
 
+/** Admin Queue VF Get Statistics opcode */
+#define INTELXLVF_ADMIN_GET_STATS 0x0000000f
+
+/** VF statistics */
+struct intelxlvf_admin_stats {
+	/** Bytes */
+	uint64_t bytes;
+	/** Unicast packets */
+	uint64_t unicasts;
+	/** Multicast packets */
+	uint64_t multicasts;
+	/** Broadcast packets */
+	uint64_t broadcasts;
+	/** Discarded packets */
+	uint64_t discards;
+	/** Errors */
+	uint64_t errors;
+} __attribute__ (( packed ));
+
+/** Admin Queue VF Get Statistics data buffer */
+struct intelxlvf_admin_stats_buffer {
+	/** Receive statistics */
+	struct intelxlvf_admin_stats rx;
+	/** Transmit statistics */
+	struct intelxlvf_admin_stats tx;
+} __attribute__ (( packed ));
+
 /** Admin queue data buffer */
 union intelxlvf_admin_buffer {
 	/** Original 40 Gigabit Ethernet data buffer */
@@ -271,6 +298,8 @@ union intelxlvf_admin_buffer {
 	struct intelxlvf_admin_promisc_buffer promisc;
 	/** VF IRQ Map data buffer */
 	struct intelxlvf_admin_irq_map_buffer irq;
+	/** VF Get Statistics data buffer */
+	struct intelxlvf_admin_stats_buffer stats;
 } __attribute__ (( packed ));
 
 /** Admin queue descriptor */