liquidio: Enhanced ethtool stats

1. Added red_drops stats. Inbound packets dropped by RED, buffer exhaustion
2. Included fcs_err, jabber_err, l2_err and frame_err errors under
   rx_errors
3. Included fifo_err, dmac_drop, red_drops, fw_err_pko, fw_err_link and
   fw_err_drop under rx_dropped
4. Included max_collision_fail, max_deferral_fail, total_collisions,
   fw_err_pko, fw_err_link, fw_err_drop and fw_err_pki under tx_dropped
5. Counting dma mapping errors
6. Added some firmware stats description and removed for some

Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com>
Acked-by: Derek Chickles <derek.chickles@cavium.com>
Acked-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 49 insertions, 26 deletions

diff --git a/drivers/net/ethernet/cavium/liquidio/liquidio_common.h b/drivers/net/ethernet/cavium/liquidio/liquidio_common.h
index 75eea83c7cc6..34a94daca590 100644
--- a/drivers/net/ethernet/cavium/liquidio/liquidio_common.h
+++ b/drivers/net/ethernet/cavium/liquidio/liquidio_common.h
@@ -779,18 +779,24 @@ struct liquidio_if_cfg_info {
 /** Stats for each NIC port in RX direction. */
 struct nic_rx_stats {
 	/* link-level stats */
-	u64 total_rcvd;
-	u64 bytes_rcvd;
-	u64 total_bcst;
-	u64 total_mcst;
-	u64 runts;
-	u64 ctl_rcvd;
-	u64 fifo_err;      /* Accounts for over/under-run of buffers */
-	u64 dmac_drop;
-	u64 fcs_err;
-	u64 jabber_err;
-	u64 l2_err;
-	u64 frame_err;
+	u64 total_rcvd;		/* Received packets */
+	u64 bytes_rcvd;		/* Octets of received packets */
+	u64 total_bcst;		/* Number of non-dropped L2 broadcast packets */
+	u64 total_mcst;		/* Number of non-dropped L2 multicast packets */
+	u64 runts;		/* Packets shorter than allowed */
+	u64 ctl_rcvd;		/* Received PAUSE packets */
+	u64 fifo_err;		/* Packets dropped due to RX FIFO full */
+	u64 dmac_drop;		/* Packets dropped by the DMAC filter */
+	u64 fcs_err;		/* Sum of fragment, overrun, and FCS errors */
+	u64 jabber_err;		/* Packets larger than allowed */
+	u64 l2_err;		/* Sum of DMA, parity, PCAM access, no memory,
+				 * buffer overflow, malformed L2 header or
+				 * length, oversize errors
+				 **/
+	u64 frame_err;		/* Sum of IPv4 and L4 checksum errors */
+	u64 red_drops;		/* Packets dropped by RED due to buffer
+				 * exhaustion
+				 **/
 
 	/* firmware stats */
 	u64 fw_total_rcvd;
@@ -806,11 +812,11 @@ struct nic_rx_stats {
 	u64 fw_lro_pkts;   /* Number of packets that are LROed      */
 	u64 fw_lro_octs;   /* Number of octets that are LROed       */
 	u64 fw_total_lro;  /* Number of LRO packets formed          */
-	u64 fw_lro_aborts; /* Number of times lRO of packet aborted */
+	u64 fw_lro_aborts; /* Number of times LRO of packet aborted */
 	u64 fw_lro_aborts_port;
 	u64 fw_lro_aborts_seq;
 	u64 fw_lro_aborts_tsval;
-	u64 fw_lro_aborts_timer;
+	u64 fw_lro_aborts_timer;	/* Timer setting error */
 	/* intrmod: packet forward rate */
 	u64 fwd_rate;
 };
@@ -818,18 +824,35 @@ struct nic_rx_stats {
 /** Stats for each NIC port in RX direction. */
 struct nic_tx_stats {
 	/* link-level stats */
-	u64 total_pkts_sent;
-	u64 total_bytes_sent;
-	u64 mcast_pkts_sent;
-	u64 bcast_pkts_sent;
-	u64 ctl_sent;
-	u64 one_collision_sent;   /* Packets sent after one collision*/
-	u64 multi_collision_sent; /* Packets sent after multiple collision*/
-	u64 max_collision_fail;   /* Packets not sent due to max collisions */
-	u64 max_deferral_fail;   /* Packets not sent due to max deferrals */
-	u64 fifo_err;       /* Accounts for over/under-run of buffers */
-	u64 runts;
-	u64 total_collisions; /* Total number of collisions detected */
+	u64 total_pkts_sent;		/* Total frames sent on the interface */
+	u64 total_bytes_sent;		/* Total octets sent on the interface */
+	u64 mcast_pkts_sent;		/* Packets sent to the multicast DMAC */
+	u64 bcast_pkts_sent;		/* Packets sent to a broadcast DMAC */
+	u64 ctl_sent;			/* Control/PAUSE packets sent */
+	u64 one_collision_sent;		/* Packets sent that experienced a
+					 * single collision before successful
+					 * transmission
+					 **/
+	u64 multi_collision_sent;	/* Packets sent that experienced
+					 * multiple collisions before successful
+					 * transmission
+					 **/
+	u64 max_collision_fail;		/* Packets dropped due to excessive
+					 * collisions
+					 **/
+	u64 max_deferral_fail;		/* Packets not sent due to max
+					 * deferrals
+					 **/
+	u64 fifo_err;			/* Packets sent that experienced a
+					 * transmit underflow and were
+					 * truncated
+					 **/
+	u64 runts;			/* Packets sent with an octet count
+					 * lessthan 64
+					 **/
+	u64 total_collisions;		/* Packets dropped due to excessive
+					 * collisions
+					 **/
 
 	/* firmware stats */
 	u64 fw_total_sent;