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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: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vasundhara Volam 2018-04-26 17:44:36 -04:00 committed by David S. Miller
parent 2727c888f2
commit 20c1d28e10
1 changed files with 33 additions and 0 deletions
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33
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
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@ -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);