Merge branch 'amd-xgbe-next'

Tom Lendacky says:

====================
amd-xgbe: AMD XGBE driver updates 2016-02-12

The following updates and fixes are included in this driver update series:

- Disable VLAN filtering in promiscuous mode
- Change from using napi_complete to napi_complete_done
- Use __napi_schedule_irqoff when running in interrupt context
- Verify ethtool speed setting is valid for the selected speedset
- Enable PFC based on the pfc_en setting
- Fix the mapping of priorities to traffic classes
- Do traffic class setup when DCB nl callbacks are invoked
- Check Rx queue fifos before stopping Rx queue DMA
- Switch from disable_irq to masking interrupts for auto-negotiation

This patch series is based on net-next.

Changes from v1:
- Removed #ifndef and #define of CRCPOLY_LE as part of the patch to
  disable VLAN filtering in promiscuous mode
- Reworked changes to xgbe_setup_tc to resolve conflicts with commit
  16e5cc6 (net: rework setup_tc ndo op to consume general tc operand)
====================

Signed-off-by: David S. Miller <[email protected]>

Author: davem330

drivers/net/ethernet/amd/xgbe/xgbe-common.h

@@ -6,7 +6,7 @@
  *
  * License 1: GPLv2
  *
- * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
  *
  * This file is free software; you may copy, redistribute and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -56,7 +56,7 @@
  *
  * License 2: Modified BSD
  *
- * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -768,12 +768,16 @@
 #define MTL_Q_TQDR			0x08
 #define MTL_Q_RQOMR			0x40
 #define MTL_Q_RQMPOCR			0x44
-#define MTL_Q_RQDR			0x4c
+#define MTL_Q_RQDR			0x48
 #define MTL_Q_RQFCR			0x50
 #define MTL_Q_IER			0x70
 #define MTL_Q_ISR			0x74
 
 /* MTL queue register entry bit positions and sizes */
+#define MTL_Q_RQDR_PRXQ_INDEX		16
+#define MTL_Q_RQDR_PRXQ_WIDTH		14
+#define MTL_Q_RQDR_RXQSTS_INDEX		4
+#define MTL_Q_RQDR_RXQSTS_WIDTH		2
 #define MTL_Q_RQFCR_RFA_INDEX		1
 #define MTL_Q_RQFCR_RFA_WIDTH		6
 #define MTL_Q_RQFCR_RFD_INDEX		17

drivers/net/ethernet/amd/xgbe/xgbe-dcb.c

@@ -6,7 +6,7 @@
  *
  * License 1: GPLv2
  *
- * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
  *
  * This file is free software; you may copy, redistribute and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -56,7 +56,7 @@
  *
  * License 2: Modified BSD
  *
- * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -146,6 +146,7 @@ static int xgbe_dcb_ieee_setets(struct net_device *netdev,
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	unsigned int i, tc_ets, tc_ets_weight;
+	u8 max_tc = 0;
 
 	tc_ets = 0;
 	tc_ets_weight = 0;
@@ -157,12 +158,9 @@ static int xgbe_dcb_ieee_setets(struct net_device *netdev,
 		netif_dbg(pdata, drv, netdev, "PRIO%u: TC=%hhu\n", i,
 			  ets->prio_tc[i]);
 
-		if ((ets->tc_tx_bw[i] || ets->tc_tsa[i]) &&
-		    (i >= pdata->hw_feat.tc_cnt))
-				return -EINVAL;
-
-		if (ets->prio_tc[i] >= pdata->hw_feat.tc_cnt)
-			return -EINVAL;
+		max_tc = max_t(u8, max_tc, ets->prio_tc[i]);
+		if ((ets->tc_tx_bw[i] || ets->tc_tsa[i]))
+			max_tc = max_t(u8, max_tc, i);
 
 		switch (ets->tc_tsa[i]) {
 		case IEEE_8021QAZ_TSA_STRICT:
@@ -171,15 +169,28 @@ static int xgbe_dcb_ieee_setets(struct net_device *netdev,
 			tc_ets = 1;
 			tc_ets_weight += ets->tc_tx_bw[i];
 			break;
-
 		default:
+			netif_err(pdata, drv, netdev,
+				  "unsupported TSA algorithm (%hhu)\n",
+				  ets->tc_tsa[i]);
 			return -EINVAL;
 		}
 	}
 
+	/* Check maximum traffic class requested */
+	if (max_tc >= pdata->hw_feat.tc_cnt) {
+		netif_err(pdata, drv, netdev,
+			  "exceeded number of supported traffic classes\n");
+		return -EINVAL;
+	}
+
 	/* Weights must add up to 100% */
-	if (tc_ets && (tc_ets_weight != 100))
+	if (tc_ets && (tc_ets_weight != 100)) {
+		netif_err(pdata, drv, netdev,
+			  "sum of ETS algorithm weights is not 100 (%u)\n",
+			  tc_ets_weight);
 		return -EINVAL;
+	}
 
 	if (!pdata->ets) {
 		pdata->ets = devm_kzalloc(pdata->dev, sizeof(*pdata->ets),
@@ -188,6 +199,7 @@ static int xgbe_dcb_ieee_setets(struct net_device *netdev,
 			return -ENOMEM;
 	}
 
+	pdata->num_tcs = max_tc + 1;
 	memcpy(pdata->ets, ets, sizeof(*pdata->ets));
 
 	pdata->hw_if.config_dcb_tc(pdata);
@@ -221,6 +233,13 @@ static int xgbe_dcb_ieee_setpfc(struct net_device *netdev,
 		  "cap=%hhu, en=%#hhx, mbc=%hhu, delay=%hhu\n",
 		  pfc->pfc_cap, pfc->pfc_en, pfc->mbc, pfc->delay);
 
+	/* Check PFC for supported number of traffic classes */
+	if (pfc->pfc_en & ~((1 << pdata->hw_feat.tc_cnt) - 1)) {
+		netif_err(pdata, drv, netdev,
+			  "PFC requested for unsupported traffic class\n");
+		return -EINVAL;
+	}
+
 	if (!pdata->pfc) {
 		pdata->pfc = devm_kzalloc(pdata->dev, sizeof(*pdata->pfc),
 					  GFP_KERNEL);