Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 727 insertions, 0 deletions

diff --git a/drivers/net/ixgbe/base/ixgbe_dcb.c b/drivers/net/ixgbe/base/ixgbe_dcb.c
new file mode 100644
index 00000000..9a6a5085
--- /dev/null
+++ b/drivers/net/ixgbe/base/ixgbe_dcb.c
@@ -0,0 +1,727 @@
+/*******************************************************************************
+
+Copyright (c) 2001-2015, Intel Corporation
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+    this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+
+ 3. Neither the name of the Intel Corporation nor the names of its
+    contributors may be used to endorse or promote products derived from
+    this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+***************************************************************************/
+
+
+#include "ixgbe_type.h"
+#include "ixgbe_dcb.h"
+#include "ixgbe_dcb_82598.h"
+#include "ixgbe_dcb_82599.h"
+
+/**
+ * ixgbe_dcb_calculate_tc_credits - This calculates the ieee traffic class
+ * credits from the configured bandwidth percentages. Credits
+ * are the smallest unit programmable into the underlying
+ * hardware. The IEEE 802.1Qaz specification do not use bandwidth
+ * groups so this is much simplified from the CEE case.
+ */
+s32 ixgbe_dcb_calculate_tc_credits(u8 *bw, u16 *refill, u16 *max,
+				   int max_frame_size)
+{
+	int min_percent = 100;
+	int min_credit, multiplier;
+	int i;
+
+	min_credit = ((max_frame_size / 2) + IXGBE_DCB_CREDIT_QUANTUM - 1) /
+			IXGBE_DCB_CREDIT_QUANTUM;
+
+	for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
+		if (bw[i] < min_percent && bw[i])
+			min_percent = bw[i];
+	}
+
+	multiplier = (min_credit / min_percent) + 1;
+
+	/* Find out the hw credits for each TC */
+	for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
+		int val = min(bw[i] * multiplier, IXGBE_DCB_MAX_CREDIT_REFILL);
+
+		if (val < min_credit)
+			val = min_credit;
+		refill[i] = (u16)val;
+
+		max[i] = bw[i] ? (bw[i]*IXGBE_DCB_MAX_CREDIT)/100 : min_credit;
+	}
+
+	return 0;
+}
+
+/**
+ * ixgbe_dcb_calculate_tc_credits_cee - Calculates traffic class credits
+ * @ixgbe_dcb_config: Struct containing DCB settings.
+ * @direction: Configuring either Tx or Rx.
+ *
+ * This function calculates the credits allocated to each traffic class.
+ * It should be called only after the rules are checked by
+ * ixgbe_dcb_check_config_cee().
+ */
+s32 ixgbe_dcb_calculate_tc_credits_cee(struct ixgbe_hw *hw,
+				   struct ixgbe_dcb_config *dcb_config,
+				   u32 max_frame_size, u8 direction)
+{
+	struct ixgbe_dcb_tc_path *p;
+	u32 min_multiplier	= 0;
+	u16 min_percent		= 100;
+	s32 ret_val =		IXGBE_SUCCESS;
+	/* Initialization values default for Tx settings */
+	u32 min_credit		= 0;
+	u32 credit_refill	= 0;
+	u32 credit_max		= 0;
+	u16 link_percentage	= 0;
+	u8  bw_percent		= 0;
+	u8  i;
+
+	if (dcb_config == NULL) {
+		ret_val = IXGBE_ERR_CONFIG;
+		goto out;
+	}
+
+	min_credit = ((max_frame_size / 2) + IXGBE_DCB_CREDIT_QUANTUM - 1) /
+		     IXGBE_DCB_CREDIT_QUANTUM;
+
+	/* Find smallest link percentage */
+	for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
+		p = &dcb_config->tc_config[i].path[direction];
+		bw_percent = dcb_config->bw_percentage[direction][p->bwg_id];
+		link_percentage = p->bwg_percent;
+
+		link_percentage = (link_percentage * bw_percent) / 100;
+
+		if (link_percentage && link_percentage < min_percent)
+			min_percent = link_percentage;
+	}
+
+	/*
+	 * The ratio between traffic classes will control the bandwidth
+	 * percentages seen on the wire. To calculate this ratio we use
+	 * a multiplier. It is required that the refill credits must be
+	 * larger than the max frame size so here we find the smallest
+	 * multiplier that will allow all bandwidth percentages to be
+	 * greater than the max frame size.
+	 */
+	min_multiplier = (min_credit / min_percent) + 1;
+
+	/* Find out the link percentage for each TC first */
+	for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
+		p = &dcb_config->tc_config[i].path[direction];
+		bw_percent = dcb_config->bw_percentage[direction][p->bwg_id];
+
+		link_percentage = p->bwg_percent;
+		/* Must be careful of integer division for very small nums */
+		link_percentage = (link_percentage * bw_percent) / 100;
+		if (p->bwg_percent > 0 && link_percentage == 0)
+			link_percentage = 1;
+
+		/* Save link_percentage for reference */
+		p->link_percent = (u8)link_percentage;
+
+		/* Calculate credit refill ratio using multiplier */
+		credit_refill = min(link_percentage * min_multiplier,
+				    (u32)IXGBE_DCB_MAX_CREDIT_REFILL);
+
+		/* Refill at least minimum credit */
+		if (credit_refill < min_credit)
+			credit_refill = min_credit;
+
+		p->data_credits_refill = (u16)credit_refill;
+
+		/* Calculate maximum credit for the TC */
+		credit_max = (link_percentage * IXGBE_DCB_MAX_CREDIT) / 100;
+
+		/*
+		 * Adjustment based on rule checking, if the percentage
+		 * of a TC is too small, the maximum credit may not be
+		 * enough to send out a jumbo frame in data plane arbitration.
+		 */
+		if (credit_max < min_credit)
+			credit_max = min_credit;
+
+		if (direction == IXGBE_DCB_TX_CONFIG) {
+			/*
+			 * Adjustment based on rule checking, if the
+			 * percentage of a TC is too small, the maximum
+			 * credit may not be enough to send out a TSO
+			 * packet in descriptor plane arbitration.
+			 */
+			if (credit_max && (credit_max <
+			    IXGBE_DCB_MIN_TSO_CREDIT)
+			    && (hw->mac.type == ixgbe_mac_82598EB))
+				credit_max = IXGBE_DCB_MIN_TSO_CREDIT;
+
+			dcb_config->tc_config[i].desc_credits_max =
+								(u16)credit_max;
+		}
+
+		p->data_credits_max = (u16)credit_max;
+	}
+
+out:
+	return ret_val;
+}
+
+/**
+ * ixgbe_dcb_unpack_pfc_cee - Unpack dcb_config PFC info
+ * @cfg: dcb configuration to unpack into hardware consumable fields
+ * @map: user priority to traffic class map
+ * @pfc_up: u8 to store user priority PFC bitmask
+ *
+ * This unpacks the dcb configuration PFC info which is stored per
+ * traffic class into a 8bit user priority bitmask that can be
+ * consumed by hardware routines. The priority to tc map must be
+ * updated before calling this routine to use current up-to maps.
+ */
+void ixgbe_dcb_unpack_pfc_cee(struct ixgbe_dcb_config *cfg, u8 *map, u8 *pfc_up)
+{
+	struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0];
+	int up;
+
+	/*
+	 * If the TC for this user priority has PFC enabled then set the
+	 * matching bit in 'pfc_up' to reflect that PFC is enabled.
+	 */
+	for (*pfc_up = 0, up = 0; up < IXGBE_DCB_MAX_USER_PRIORITY; up++) {
+		if (tc_config[map[up]].pfc != ixgbe_dcb_pfc_disabled)
+			*pfc_up |= 1 << up;
+	}
+}
+
+void ixgbe_dcb_unpack_refill_cee(struct ixgbe_dcb_config *cfg, int direction,
+			     u16 *refill)
+{
+	struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0];
+	int tc;
+
+	for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++)
+		refill[tc] = tc_config[tc].path[direction].data_credits_refill;
+}
+
+void ixgbe_dcb_unpack_max_cee(struct ixgbe_dcb_config *cfg, u16 *max)
+{
+	struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0];
+	int tc;
+
+	for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++)
+		max[tc] = tc_config[tc].desc_credits_max;
+}
+
+void ixgbe_dcb_unpack_bwgid_cee(struct ixgbe_dcb_config *cfg, int direction,
+			    u8 *bwgid)
+{
+	struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0];
+	int tc;
+
+	for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++)
+		bwgid[tc] = tc_config[tc].path[direction].bwg_id;
+}
+
+void ixgbe_dcb_unpack_tsa_cee(struct ixgbe_dcb_config *cfg, int direction,
+			   u8 *tsa)
+{
+	struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0];
+	int tc;
+
+	for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++)
+		tsa[tc] = tc_config[tc].path[direction].tsa;
+}
+
+u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *cfg, int direction, u8 up)
+{
+	struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0];
+	u8 prio_mask = 1 << up;
+	u8 tc = cfg->num_tcs.pg_tcs;
+
+	/* If tc is 0 then DCB is likely not enabled or supported */
+	if (!tc)
+		goto out;
+
+	/*
+	 * Test from maximum TC to 1 and report the first match we find.  If
+	 * we find no match we can assume that the TC is 0 since the TC must
+	 * be set for all user priorities
+	 */
+	for (tc--; tc; tc--) {
+		if (prio_mask & tc_config[tc].path[direction].up_to_tc_bitmap)
+			break;
+	}
+out:
+	return tc;
+}
+
+void ixgbe_dcb_unpack_map_cee(struct ixgbe_dcb_config *cfg, int direction,
+			      u8 *map)
+{
+	u8 up;
+
+	for (up = 0; up < IXGBE_DCB_MAX_USER_PRIORITY; up++)
+		map[up] = ixgbe_dcb_get_tc_from_up(cfg, direction, up);
+}
+
+/**
+ * ixgbe_dcb_config - Struct containing DCB settings.
+ * @dcb_config: Pointer to DCB config structure
+ *
+ * This function checks DCB rules for DCB settings.
+ * The following rules are checked:
+ * 1. The sum of bandwidth percentages of all Bandwidth Groups must total 100%.
+ * 2. The sum of bandwidth percentages of all Traffic Classes within a Bandwidth
+ *    Group must total 100.
+ * 3. A Traffic Class should not be set to both Link Strict Priority
+ *    and Group Strict Priority.
+ * 4. Link strict Bandwidth Groups can only have link strict traffic classes
+ *    with zero bandwidth.
+ */
+s32 ixgbe_dcb_check_config_cee(struct ixgbe_dcb_config *dcb_config)
+{
+	struct ixgbe_dcb_tc_path *p;
+	s32 ret_val = IXGBE_SUCCESS;
+	u8 i, j, bw = 0, bw_id;
+	u8 bw_sum[2][IXGBE_DCB_MAX_BW_GROUP];
+	bool link_strict[2][IXGBE_DCB_MAX_BW_GROUP];
+
+	memset(bw_sum, 0, sizeof(bw_sum));
+	memset(link_strict, 0, sizeof(link_strict));
+
+	/* First Tx, then Rx */
+	for (i = 0; i < 2; i++) {
+		/* Check each traffic class for rule violation */
+		for (j = 0; j < IXGBE_DCB_MAX_TRAFFIC_CLASS; j++) {
+			p = &dcb_config->tc_config[j].path[i];
+
+			bw = p->bwg_percent;
+			bw_id = p->bwg_id;
+
+			if (bw_id >= IXGBE_DCB_MAX_BW_GROUP) {
+				ret_val = IXGBE_ERR_CONFIG;
+				goto err_config;
+			}
+			if (p->tsa == ixgbe_dcb_tsa_strict) {
+				link_strict[i][bw_id] = true;
+				/* Link strict should have zero bandwidth */
+				if (bw) {
+					ret_val = IXGBE_ERR_CONFIG;
+					goto err_config;
+				}
+			} else if (!bw) {
+				/*
+				 * Traffic classes without link strict
+				 * should have non-zero bandwidth.
+				 */
+				ret_val = IXGBE_ERR_CONFIG;
+				goto err_config;
+			}
+			bw_sum[i][bw_id] += bw;
+		}
+
+		bw = 0;
+
+		/* Check each bandwidth group for rule violation */
+		for (j = 0; j < IXGBE_DCB_MAX_BW_GROUP; j++) {
+			bw += dcb_config->bw_percentage[i][j];
+			/*
+			 * Sum of bandwidth percentages of all traffic classes
+			 * within a Bandwidth Group must total 100 except for
+			 * link strict group (zero bandwidth).
+			 */
+			if (link_strict[i][j]) {
+				if (bw_sum[i][j]) {
+					/*
+					 * Link strict group should have zero
+					 * bandwidth.
+					 */
+					ret_val = IXGBE_ERR_CONFIG;
+					goto err_config;
+				}
+			} else if (bw_sum[i][j] != IXGBE_DCB_BW_PERCENT &&
+				   bw_sum[i][j] != 0) {
+				ret_val = IXGBE_ERR_CONFIG;
+				goto err_config;
+			}
+		}
+
+		if (bw != IXGBE_DCB_BW_PERCENT) {
+			ret_val = IXGBE_ERR_CONFIG;
+			goto err_config;
+		}
+	}
+
+err_config:
+
+	return ret_val;
+}
+
+/**
+ * ixgbe_dcb_get_tc_stats - Returns status of each traffic class
+ * @hw: pointer to hardware structure
+ * @stats: pointer to statistics structure
+ * @tc_count:  Number of elements in bwg_array.
+ *
+ * This function returns the status data for each of the Traffic Classes in use.
+ */
+s32 ixgbe_dcb_get_tc_stats(struct ixgbe_hw *hw, struct ixgbe_hw_stats *stats,
+			   u8 tc_count)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_get_tc_stats_82598(hw, stats, tc_count);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_get_tc_stats_82599(hw, stats, tc_count);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+/**
+ * ixgbe_dcb_get_pfc_stats - Returns CBFC status of each traffic class
+ * @hw: pointer to hardware structure
+ * @stats: pointer to statistics structure
+ * @tc_count:  Number of elements in bwg_array.
+ *
+ * This function returns the CBFC status data for each of the Traffic Classes.
+ */
+s32 ixgbe_dcb_get_pfc_stats(struct ixgbe_hw *hw, struct ixgbe_hw_stats *stats,
+			    u8 tc_count)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_get_pfc_stats_82598(hw, stats, tc_count);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_get_pfc_stats_82599(hw, stats, tc_count);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+/**
+ * ixgbe_dcb_config_rx_arbiter_cee - Config Rx arbiter
+ * @hw: pointer to hardware structure
+ * @dcb_config: pointer to ixgbe_dcb_config structure
+ *
+ * Configure Rx Data Arbiter and credits for each traffic class.
+ */
+s32 ixgbe_dcb_config_rx_arbiter_cee(struct ixgbe_hw *hw,
+				struct ixgbe_dcb_config *dcb_config)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS]	= { 0 };
+	u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS]	= { 0 };
+	u8 map[IXGBE_DCB_MAX_USER_PRIORITY]	= { 0 };
+	u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS]	= { 0 };
+	u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS]	= { 0 };
+
+	ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
+	ixgbe_dcb_unpack_max_cee(dcb_config, max);
+	ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
+	ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
+	ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map);
+
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwgid,
+							tsa, map);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+/**
+ * ixgbe_dcb_config_tx_desc_arbiter_cee - Config Tx Desc arbiter
+ * @hw: pointer to hardware structure
+ * @dcb_config: pointer to ixgbe_dcb_config structure
+ *
+ * Configure Tx Descriptor Arbiter and credits for each traffic class.
+ */
+s32 ixgbe_dcb_config_tx_desc_arbiter_cee(struct ixgbe_hw *hw,
+				     struct ixgbe_dcb_config *dcb_config)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+
+	ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
+	ixgbe_dcb_unpack_max_cee(dcb_config, max);
+	ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
+	ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
+
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max,
+							     bwgid, tsa);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max,
+							     bwgid, tsa);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+/**
+ * ixgbe_dcb_config_tx_data_arbiter_cee - Config Tx data arbiter
+ * @hw: pointer to hardware structure
+ * @dcb_config: pointer to ixgbe_dcb_config structure
+ *
+ * Configure Tx Data Arbiter and credits for each traffic class.
+ */
+s32 ixgbe_dcb_config_tx_data_arbiter_cee(struct ixgbe_hw *hw,
+				     struct ixgbe_dcb_config *dcb_config)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u8 map[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 };
+	u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+
+	ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
+	ixgbe_dcb_unpack_max_cee(dcb_config, max);
+	ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
+	ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
+	ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map);
+
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max,
+							     bwgid, tsa);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max,
+							     bwgid, tsa,
+							     map);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+/**
+ * ixgbe_dcb_config_pfc_cee - Config priority flow control
+ * @hw: pointer to hardware structure
+ * @dcb_config: pointer to ixgbe_dcb_config structure
+ *
+ * Configure Priority Flow Control for each traffic class.
+ */
+s32 ixgbe_dcb_config_pfc_cee(struct ixgbe_hw *hw,
+			 struct ixgbe_dcb_config *dcb_config)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	u8 pfc_en;
+	u8 map[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 };
+
+	ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map);
+	ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en);
+
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_config_pfc_82598(hw, pfc_en);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_config_pfc_82599(hw, pfc_en, map);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+/**
+ * ixgbe_dcb_config_tc_stats - Config traffic class statistics
+ * @hw: pointer to hardware structure
+ *
+ * Configure queue statistics registers, all queues belonging to same traffic
+ * class uses a single set of queue statistics counters.
+ */
+s32 ixgbe_dcb_config_tc_stats(struct ixgbe_hw *hw)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_config_tc_stats_82598(hw);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_config_tc_stats_82599(hw, NULL);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+/**
+ * ixgbe_dcb_hw_config_cee - Config and enable DCB
+ * @hw: pointer to hardware structure
+ * @dcb_config: pointer to ixgbe_dcb_config structure
+ *
+ * Configure dcb settings and enable dcb mode.
+ */
+s32 ixgbe_dcb_hw_config_cee(struct ixgbe_hw *hw,
+			struct ixgbe_dcb_config *dcb_config)
+{
+	s32 ret = IXGBE_NOT_IMPLEMENTED;
+	u8 pfc_en;
+	u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u8 map[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 };
+	u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+	u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS];
+
+	/* Unpack CEE standard containers */
+	ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
+	ixgbe_dcb_unpack_max_cee(dcb_config, max);
+	ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
+	ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
+	ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map);
+
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_hw_config_82598(hw, dcb_config->link_speed,
+						refill, max, bwgid, tsa);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ixgbe_dcb_config_82599(hw, dcb_config);
+		ret = ixgbe_dcb_hw_config_82599(hw, dcb_config->link_speed,
+						refill, max, bwgid,
+						tsa, map);
+
+		ixgbe_dcb_config_tc_stats_82599(hw, dcb_config);
+		break;
+	default:
+		break;
+	}
+
+	if (!ret && dcb_config->pfc_mode_enable) {
+		ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en);
+		ret = ixgbe_dcb_config_pfc(hw, pfc_en, map);
+	}
+
+	return ret;
+}
+
+/* Helper routines to abstract HW specifics from DCB netlink ops */
+s32 ixgbe_dcb_config_pfc(struct ixgbe_hw *hw, u8 pfc_en, u8 *map)
+{
+	int ret = IXGBE_ERR_PARAM;
+
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ret = ixgbe_dcb_config_pfc_82598(hw, pfc_en);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ret = ixgbe_dcb_config_pfc_82599(hw, pfc_en, map);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+s32 ixgbe_dcb_hw_config(struct ixgbe_hw *hw, u16 *refill, u16 *max,
+			    u8 *bwg_id, u8 *tsa, u8 *map)
+{
+	switch (hw->mac.type) {
+	case ixgbe_mac_82598EB:
+		ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa);
+		ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id,
+						       tsa);
+		ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id,
+						       tsa);
+		break;
+	case ixgbe_mac_82599EB:
+	case ixgbe_mac_X540:
+	case ixgbe_mac_X550:
+	case ixgbe_mac_X550EM_x:
+	case ixgbe_mac_X550EM_a:
+		ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id,
+						  tsa, map);
+		ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id,
+						       tsa);
+		ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,
+						       tsa, map);
+		break;
+	default:
+		break;
+	}
+	return 0;
+}