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Date:   Sun, 26 Apr 2020 16:24:39 -0400
From:   Michael Chan <>
        Vasundhara Volam <>
Subject: [PATCH net 2/5] bnxt_en: Reduce BNXT_MSIX_VEC_MAX value to supported CQs per PF.

From: Vasundhara Volam <>

Broadcom adapters support only maximum of 512 CQs per PF. If user sets
MSIx vectors more than supported CQs, firmware is setting incorrect value
for msix_vec_per_pf_max parameter. Fix it by reducing the BNXT_MSIX_VEC_MAX
value to 512, even though the maximum # of MSIx vectors supported by adapter
are 1280.

Fixes: f399e8497826 ("bnxt_en: Use msix_vec_per_pf_max and msix_vec_per_pf_min devlink params.")
Signed-off-by: Vasundhara Volam <>
Signed-off-by: Michael Chan <>
 drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
index 95f893f..d5c8bd4 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
@@ -43,7 +43,7 @@ static inline void bnxt_link_bp_to_dl(struct bnxt *bp, struct devlink *dl)
 #define BNXT_NVM_CFG_VER_BITS		24
-#define BNXT_MSIX_VEC_MAX	1280
+#define BNXT_MSIX_VEC_MAX	512
 #define BNXT_MSIX_VEC_MIN_MAX	128
 enum bnxt_nvm_dir_type {

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