path: root/drivers/net/ethernet/emulex/benet/be_ethtool.c

/*
 * Copyright (C) 2005 - 2014 Emulex
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Contact Information:
 * linux-drivers@emulex.com
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 */

#include "be.h"
#include "be_cmds.h"
#include <linux/ethtool.h>

struct be_ethtool_stat {
	char desc[ETH_GSTRING_LEN];
	int type;
	int size;
	int offset;
};

enum {DRVSTAT_TX, DRVSTAT_RX, DRVSTAT};
#define FIELDINFO(_struct, field) FIELD_SIZEOF(_struct, field), \
					offsetof(_struct, field)
#define DRVSTAT_TX_INFO(field)	#field, DRVSTAT_TX,\
					FIELDINFO(struct be_tx_stats, field)
#define DRVSTAT_RX_INFO(field)	#field, DRVSTAT_RX,\
					FIELDINFO(struct be_rx_stats, field)
#define	DRVSTAT_INFO(field)	#field, DRVSTAT,\
					FIELDINFO(struct be_drv_stats, field)

static const struct be_ethtool_stat et_stats[] = {
	{DRVSTAT_INFO(rx_crc_errors)},
	{DRVSTAT_INFO(rx_alignment_symbol_errors)},
	{DRVSTAT_INFO(rx_pause_frames)},
	{DRVSTAT_INFO(rx_control_frames)},
	/* Received packets dropped when the Ethernet length field
	 * is not equal to the actual Ethernet data length.
	 */
	{DRVSTAT_INFO(rx_in_range_errors)},
	/* Received packets dropped when their length field is >= 1501 bytes
	 * and <= 1535 bytes.
	 */
	{DRVSTAT_INFO(rx_out_range_errors)},
	/* Received packets dropped when they are longer than 9216 bytes */
	{DRVSTAT_INFO(rx_frame_too_long)},
	/* Received packets dropped when they don't pass the unicast or
	 * multicast address filtering.
	 */
	{DRVSTAT_INFO(rx_address_filtered)},
	/* Received packets dropped when IP packet length field is less than
	 * the IP header length field.
	 */
	{DRVSTAT_INFO(rx_dropped_too_small)},
	/* Received packets dropped when IP length field is greater than
	 * the actual packet length.
	 */
	{DRVSTAT_INFO(rx_dropped_too_short)},
	/* Received packets dropped when the IP header length field is less
	 * than 5.
	 */
	{DRVSTAT_INFO(rx_dropped_header_too_small)},
	/* Received packets dropped when the TCP header length field is less
	 * than 5 or the TCP header length + IP header length is more
	 * than IP packet length.
	 */
	{DRVSTAT_INFO(rx_dropped_tcp_length)},
	{DRVSTAT_INFO(rx_dropped_runt)},
	/* Number of received packets dropped when a fifo for descriptors going
	 * into the packet demux block overflows. In normal operation, this
	 * fifo must never overflow.
	 */
	{DRVSTAT_INFO(rxpp_fifo_overflow_drop)},
	{DRVSTAT_INFO(rx_input_fifo_overflow_drop)},
	{DRVSTAT_INFO(rx_ip_checksum_errs)},
	{DRVSTAT_INFO(rx_tcp_checksum_errs)},
	{DRVSTAT_INFO(rx_udp_checksum_errs)},
	{DRVSTAT_INFO(tx_pauseframes)},
	{DRVSTAT_INFO(tx_controlframes)},
	{DRVSTAT_INFO(rx_priority_pause_frames)},
	{DRVSTAT_INFO(tx_priority_pauseframes)},
	/* Received packets dropped when an internal fifo going into
	 * main packet buffer tank (PMEM) overflows.
	 */
	{DRVSTAT_INFO(pmem_fifo_overflow_drop)},
	{DRVSTAT_INFO(jabber_events)},
	/* Received packets dropped due to lack of available HW packet buffers
	 * used to temporarily hold the received packets.
	 */
	{DRVSTAT_INFO(rx_drops_no_pbuf)},
	/* Received packets dropped due to input receive buffer
	 * descriptor fifo overflowing.
	 */
	{DRVSTAT_INFO(rx_drops_no_erx_descr)},
	/* Packets dropped because the internal FIFO to the offloaded TCP
	 * receive processing block is full. This could happen only for
	 * offloaded iSCSI or FCoE trarffic.
	 */
	{DRVSTAT_INFO(rx_drops_no_tpre_descr)},
	/* Received packets dropped when they need more than 8
	 * receive buffers. This cannot happen as the driver configures
	 * 2048 byte receive buffers.
	 */
	{DRVSTAT_INFO(rx_drops_too_many_frags)},
	{DRVSTAT_INFO(forwarded_packets)},
	/* Received packets dropped when the frame length
	 * is more than 9018 bytes
	 */
	{DRVSTAT_INFO(rx_drops_mtu)},
	/* Number of packets dropped due to random early drop function */
	{DRVSTAT_INFO(eth_red_drops)},
	{DRVSTAT_INFO(be_on_die_temperature)},
	{DRVSTAT_INFO(rx_roce_bytes_lsd)},
	{DRVSTAT_INFO(rx_roce_bytes_msd)},
	{DRVSTAT_INFO(rx_roce_frames)},
	{DRVSTAT_INFO(roce_drops_payload_len)},
	{DRVSTAT_INFO(roce_drops_crc)}
};
#define ETHTOOL_STATS_NUM ARRAY_SIZE(et_stats)

/* Stats related to multi RX queues: get_stats routine assumes bytes, pkts
 * are first and second members respectively.
 */
static const struct be_ethtool_stat et_rx_stats[] = {
	{DRVSTAT_RX_INFO(rx_bytes)},/* If moving this member see above note */
	{DRVSTAT_RX_INFO(rx_pkts)}, /* If moving this member see above note */
	{DRVSTAT_RX_INFO(rx_compl)},
	{DRVSTAT_RX_INFO(rx_compl_err)},
	{DRVSTAT_RX_INFO(rx_mcast_pkts)},
	/* Number of page allocation failures while posting receive buffers
	 * to HW.
	 */
	{DRVSTAT_RX_INFO(rx_post_fail)},
	/* Recevied packets dropped due to skb allocation failure */
	{DRVSTAT_RX_INFO(rx_drops_no_skbs)},
	/* Received packets dropped due to lack of available fetched buffers
	 * posted by the driver.
	 */
	{DRVSTAT_RX_INFO(rx_drops_no_frags)}
};
#define ETHTOOL_RXSTATS_NUM (ARRAY_SIZE(et_rx_stats))

/* Stats related to multi TX queues: get_stats routine assumes compl is the
 * first member
 */
static const struct be_ethtool_stat et_tx_stats[] = {
	{DRVSTAT_TX_INFO(tx_compl)}, /* If moving this member see above note */