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Commit 20c1d28e authored by Vasundhara Volam's avatar Vasundhara Volam Committed by David S. Miller
Browse files

bnxt_en: Display function level rx/tx_discard_pkts via ethtool 



Add counters to display sum of rx/tx_discard_pkts of all rings as
function level statistics via ethtool.

Signed-off-by: default avatarVasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2727c888

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

+33 −0
Original line number Diff line number Diff line
@@ -140,6 +140,19 @@ static int bnxt_set_coalesce(struct net_device *dev, 
#define BNXT_RX_STATS_EXT_ENTRY(counter)	\

	{ BNXT_RX_STATS_EXT_OFFSET(counter), __stringify(counter) }



enum {

	RX_TOTAL_DISCARDS,

	TX_TOTAL_DISCARDS,

};



static struct {

	u64			counter;

	char			string[ETH_GSTRING_LEN];

} bnxt_sw_func_stats[] = {

	{0, "rx_total_discard_pkts"},

	{0, "tx_total_discard_pkts"},

};



static const struct {

	long offset;

	char string[ETH_GSTRING_LEN];
@@ -237,6 +250,7 @@ static const struct { 
	BNXT_RX_STATS_EXT_ENTRY(resume_roce_pause_events),

};



#define BNXT_NUM_SW_FUNC_STATS	ARRAY_SIZE(bnxt_sw_func_stats)

#define BNXT_NUM_PORT_STATS ARRAY_SIZE(bnxt_port_stats_arr)

#define BNXT_NUM_PORT_STATS_EXT ARRAY_SIZE(bnxt_port_stats_ext_arr)
@@ -244,6 +258,8 @@ static int bnxt_get_num_stats(struct bnxt *bp) 
{

	int num_stats = BNXT_NUM_STATS * bp->cp_nr_rings;



	num_stats += BNXT_NUM_SW_FUNC_STATS;



	if (bp->flags & BNXT_FLAG_PORT_STATS)

		num_stats += BNXT_NUM_PORT_STATS;
@@ -279,6 +295,9 @@ static void bnxt_get_ethtool_stats(struct net_device *dev, 
	if (!bp->bnapi)

		return;



	for (i = 0; i < BNXT_NUM_SW_FUNC_STATS; i++)

		bnxt_sw_func_stats[i].counter = 0;



	for (i = 0; i < bp->cp_nr_rings; i++) {

		struct bnxt_napi *bnapi = bp->bnapi[i];

		struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring;
@@ -288,7 +307,16 @@ static void bnxt_get_ethtool_stats(struct net_device *dev, 
		for (k = 0; k < stat_fields; j++, k++)

			buf[j] = le64_to_cpu(hw_stats[k]);

		buf[j++] = cpr->rx_l4_csum_errors;



		bnxt_sw_func_stats[RX_TOTAL_DISCARDS].counter +=

			le64_to_cpu(cpr->hw_stats->rx_discard_pkts);

		bnxt_sw_func_stats[TX_TOTAL_DISCARDS].counter +=

			le64_to_cpu(cpr->hw_stats->tx_discard_pkts);

	}



	for (i = 0; i < BNXT_NUM_SW_FUNC_STATS; i++, j++)

		buf[j] = bnxt_sw_func_stats[i].counter;



	if (bp->flags & BNXT_FLAG_PORT_STATS) {

		__le64 *port_stats = (__le64 *)bp->hw_rx_port_stats;
@@ -359,6 +387,11 @@ static void bnxt_get_strings(struct net_device *dev, u32 stringset, u8 *buf) 
			sprintf(buf, "[%d]: rx_l4_csum_errors", i);

			buf += ETH_GSTRING_LEN;

		}

		for (i = 0; i < BNXT_NUM_SW_FUNC_STATS; i++) {

			strcpy(buf, bnxt_sw_func_stats[i].string);

			buf += ETH_GSTRING_LEN;

		}



		if (bp->flags & BNXT_FLAG_PORT_STATS) {

			for (i = 0; i < BNXT_NUM_PORT_STATS; i++) {

				strcpy(buf, bnxt_port_stats_arr[i].string);