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bnxt_en: Add pcie_ctx_v2 support for ethtool -d

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Add support to dump the expanded v2 struct that contains PCIE read/write
latency and credit histogram data.

Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Shruti Parab <shruti.parab@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250819163919.104075-5-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Shruti Parab
2025-08-19 09:39:18 -07:00
committed by Jakub Kicinski
parent b530173d3c
commit 5a4cf42322
1 changed files with 11 additions and 3 deletions
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14
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
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@@ -2088,14 +2088,16 @@ __bnxt_hwrm_pcie_qstats(struct bnxt *bp, struct hwrm_pcie_qstats_input *req)
}
#define BNXT_PCIE_32B_ENTRY(start, end) \
{ offsetof(struct pcie_ctx_hw_stats, start), \
offsetof(struct pcie_ctx_hw_stats, end) }
{ offsetof(struct pcie_ctx_hw_stats_v2, start),\
offsetof(struct pcie_ctx_hw_stats_v2, end) }
static const struct {
u16 start;
u16 end;
} bnxt_pcie_32b_entries[] = {
BNXT_PCIE_32B_ENTRY(pcie_ltssm_histogram[0], pcie_ltssm_histogram[3]),
BNXT_PCIE_32B_ENTRY(pcie_tl_credit_nph_histogram[0], unused_1),
BNXT_PCIE_32B_ENTRY(pcie_rd_latency_histogram[0], unused_2),
};
static void bnxt_get_regs(struct net_device *dev, struct ethtool_regs *regs,
@@ -2123,7 +2125,13 @@ static void bnxt_get_regs(struct net_device *dev, struct ethtool_regs *regs,
int i, j, len;
len = min(bp->pcie_stat_len, le16_to_cpu(resp->pcie_stat_size));
regs->version = 1;
if (len <= sizeof(struct pcie_ctx_hw_stats))
regs->version = 1;
else if (len < sizeof(struct pcie_ctx_hw_stats_v2))
regs->version = 2;
else
regs->version = 3;
for (i = 0, j = 0; i < len; ) {
if (i >= bnxt_pcie_32b_entries[j].start &&
i <= bnxt_pcie_32b_entries[j].end) {