netdev - [PATCH net-next 4/5] bnxt_en: Add pcie_ctx

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Message-ID: <20250818004940.5663-5-michael.chan@broadcom.com>
Date: Sun, 17 Aug 2025 17:49:39 -0700
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	pavan.chebbi@...adcom.com,
	andrew.gospodarek@...adcom.com,
	Shruti Parab <shruti.parab@...adcom.com>,
	Kalesh AP <kalesh-anakkur.purayil@...adcom.com>
Subject: [PATCH net-next 4/5] bnxt_en: Add pcie_ctx_v2 support for ethtool -d

From: Shruti Parab <shruti.parab@...adcom.com>

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@...adcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@...adcom.com>
Signed-off-by: Shruti Parab <shruti.parab@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index abb895fb1a9c..2830a2b17a27 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -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) {
-- 
2.30.1