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bnxt_en: Add pcie_stat_len to struct bp

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Add this length field to capture the length of the pcie stats structure
supported by the FW.  This length will be determined in
bnxt_ethtool_init().  The minimum of this FW length and the length
known to the driver will determine the actual ethtool -d length.

Suggested-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@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/20250819163919.104075-4-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Shruti Parab 2025-08-19 09:39:17 -07:00 committed by Jakub Kicinski
parent 1cc174d33a
commit b530173d3c
2 changed files with 28 additions and 10 deletions
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1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -2543,6 +2543,7 @@ struct bnxt {
u16 fw_rx_stats_ext_size;
u16 fw_tx_stats_ext_size;
u16 hw_ring_stats_size;
u16 pcie_stat_len;
u8 pri2cos_idx[8];
u8 pri2cos_valid;

37
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View File

@ -2061,17 +2061,11 @@ static void bnxt_get_drvinfo(struct net_device *dev,
static int bnxt_get_regs_len(struct net_device *dev)
{
struct bnxt *bp = netdev_priv(dev);
int reg_len;
if (!BNXT_PF(bp))
return -EOPNOTSUPP;
reg_len = BNXT_PXP_REG_LEN;
if (bp->fw_cap & BNXT_FW_CAP_PCIE_STATS_SUPPORTED)
reg_len += sizeof(struct pcie_ctx_hw_stats);
return reg_len;
return BNXT_PXP_REG_LEN + bp->pcie_stat_len;
}
static void *
@ -2107,6 +2101,7 @@ static const struct {
static void bnxt_get_regs(struct net_device *dev, struct ethtool_regs *regs,
void *_p)
{
struct hwrm_pcie_qstats_output *resp;
struct hwrm_pcie_qstats_input *req;
struct bnxt *bp = netdev_priv(dev);
u8 *src;
@ -2121,14 +2116,15 @@ static void bnxt_get_regs(struct net_device *dev, struct ethtool_regs *regs,
if (hwrm_req_init(bp, req, HWRM_PCIE_QSTATS))
return;
hwrm_req_hold(bp, req);
resp = hwrm_req_hold(bp, req);
src = __bnxt_hwrm_pcie_qstats(bp, req);
if (src) {
u8 *dst = (u8 *)(_p + BNXT_PXP_REG_LEN);
int i, j;
int i, j, len;
len = min(bp->pcie_stat_len, le16_to_cpu(resp->pcie_stat_size));
regs->version = 1;
for (i = 0, j = 0; i < sizeof(struct pcie_ctx_hw_stats); ) {
for (i = 0, j = 0; i < len; ) {
if (i >= bnxt_pcie_32b_entries[j].start &&
i <= bnxt_pcie_32b_entries[j].end) {
u32 *dst32 = (u32 *)(dst + i);
@ -5273,6 +5269,26 @@ static int bnxt_get_ts_info(struct net_device *dev,
return 0;
}
static void bnxt_hwrm_pcie_qstats(struct bnxt *bp)
{
struct hwrm_pcie_qstats_output *resp;
struct hwrm_pcie_qstats_input *req;
bp->pcie_stat_len = 0;
if (!(bp->fw_cap & BNXT_FW_CAP_PCIE_STATS_SUPPORTED))
return;
if (hwrm_req_init(bp, req, HWRM_PCIE_QSTATS))
return;
resp = hwrm_req_hold(bp, req);
if (__bnxt_hwrm_pcie_qstats(bp, req))
bp->pcie_stat_len = min_t(u16,
le16_to_cpu(resp->pcie_stat_size),
sizeof(struct pcie_ctx_hw_stats_v2));
hwrm_req_drop(bp, req);
}
void bnxt_ethtool_init(struct bnxt *bp)
{
struct hwrm_selftest_qlist_output *resp;
@ -5281,6 +5297,7 @@ void bnxt_ethtool_init(struct bnxt *bp)
struct net_device *dev = bp->dev;
int i, rc;
bnxt_hwrm_pcie_qstats(bp);
if (!(bp->fw_cap & BNXT_FW_CAP_PKG_VER))
bnxt_get_pkgver(dev);