bnx2x: disable fairness if ETS is enabled

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>

2 files changed, 8 insertions, 2 deletions

diff --git a/drivers/net/bnx2x/bnx2x_dcb.h b/drivers/net/bnx2x/bnx2x_dcb.h
index bed369d67e02..5bedd85e94df 100644
--- a/drivers/net/bnx2x/bnx2x_dcb.h
+++ b/drivers/net/bnx2x/bnx2x_dcb.h
@@ -60,6 +60,8 @@ struct bnx2x_dcbx_port_params {
 #define BNX2X_DCBX_OVERWRITE_SETTINGS_DISABLE           0
 #define BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE            1
 #define BNX2X_DCBX_OVERWRITE_SETTINGS_INVALID   (BNX2X_DCBX_CONFIG_INV_VALUE)
+#define BNX2X_IS_ETS_ENABLED(bp) ((bp)->dcb_state == BNX2X_DCB_STATE_ON &&\
+                                  (bp)->dcbx_port_params.ets.enabled)
 
 struct bnx2x_config_lldp_params {
         u32 overwrite_settings;
diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c
index 637ff5ac2445..bc516bbcd9fd 100644
--- a/drivers/net/bnx2x/bnx2x_main.c
+++ b/drivers/net/bnx2x/bnx2x_main.c
@@ -1892,8 +1892,12 @@ static void bnx2x_calc_vn_weight_sum(struct bnx2x *bp)
                 bp->vn_weight_sum += vn_min_rate;
         }
 
-        /* ... only if all min rates are zeros - disable fairness */
-        if (all_zero) {
+        /* if ETS or all min rates are zeros - disable fairness */
+        if (BNX2X_IS_ETS_ENABLED(bp)) {
+                bp->cmng.flags.cmng_enables &=
+                                        ~CMNG_FLAGS_PER_PORT_FAIRNESS_VN;
+                DP(NETIF_MSG_IFUP, "Fairness will be disabled due to ETS\n");
+        } else if (all_zero) {
                 bp->cmng.flags.cmng_enables &=
                                         ~CMNG_FLAGS_PER_PORT_FAIRNESS_VN;
                 DP(NETIF_MSG_IFUP, "All MIN values are zeroes"