Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1987 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_dcb.c b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
new file mode 100644
index 000000000..90638b67f
--- /dev/null
+++ b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
@@ -0,0 +1,1987 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2013 - 2021 Intel Corporation. */
+
+#include "i40e_adminq.h"
+#include "i40e_prototype.h"
+#include "i40e_dcb.h"
+
+/**
+ * i40e_get_dcbx_status
+ * @hw: pointer to the hw struct
+ * @status: Embedded DCBX Engine Status
+ *
+ * Get the DCBX status from the Firmware
+ **/
+int i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
+{
+	u32 reg;
+
+	if (!status)
+		return I40E_ERR_PARAM;
+
+	reg = rd32(hw, I40E_PRTDCB_GENS);
+	*status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >>
+			I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT);
+
+	return 0;
+}
+
+/**
+ * i40e_parse_ieee_etscfg_tlv
+ * @tlv: IEEE 802.1Qaz ETS CFG TLV
+ * @dcbcfg: Local store to update ETS CFG data
+ *
+ * Parses IEEE 802.1Qaz ETS CFG TLV
+ **/
+static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
+				       struct i40e_dcbx_config *dcbcfg)
+{
+	struct i40e_dcb_ets_config *etscfg;
+	u8 *buf = tlv->tlvinfo;
+	u16 offset = 0;
+	u8 priority;
+	int i;
+
+	/* First Octet post subtype
+	 * --------------------------
+	 * |will-|CBS  | Re-  | Max |
+	 * |ing  |     |served| TCs |
+	 * --------------------------
+	 * |1bit | 1bit|3 bits|3bits|
+	 */
+	etscfg = &dcbcfg->etscfg;
+	etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >>
+			       I40E_IEEE_ETS_WILLING_SHIFT);
+	etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >>
+			   I40E_IEEE_ETS_CBS_SHIFT);
+	etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >>
+			      I40E_IEEE_ETS_MAXTC_SHIFT);
+
+	/* Move offset to Priority Assignment Table */
+	offset++;
+
+	/* Priority Assignment Table (4 octets)
+	 * Octets:|    1    |    2    |    3    |    4    |
+	 *        -----------------------------------------
+	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
+	 *        -----------------------------------------
+	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
+	 *        -----------------------------------------
+	 */
+	for (i = 0; i < 4; i++) {
+		priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
+				I40E_IEEE_ETS_PRIO_1_SHIFT);
+		etscfg->prioritytable[i * 2] =  priority;
+		priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
+				I40E_IEEE_ETS_PRIO_0_SHIFT);
+		etscfg->prioritytable[i * 2 + 1] = priority;
+		offset++;
+	}
+
+	/* TC Bandwidth Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		etscfg->tcbwtable[i] = buf[offset++];
+
+	/* TSA Assignment Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		etscfg->tsatable[i] = buf[offset++];
+}
+
+/**
+ * i40e_parse_ieee_etsrec_tlv
+ * @tlv: IEEE 802.1Qaz ETS REC TLV
+ * @dcbcfg: Local store to update ETS REC data
+ *
+ * Parses IEEE 802.1Qaz ETS REC TLV
+ **/
+static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
+				       struct i40e_dcbx_config *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+	u16 offset = 0;
+	u8 priority;
+	int i;
+
+	/* Move offset to priority table */
+	offset++;
+
+	/* Priority Assignment Table (4 octets)
+	 * Octets:|    1    |    2    |    3    |    4    |
+	 *        -----------------------------------------
+	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
+	 *        -----------------------------------------
+	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
+	 *        -----------------------------------------
+	 */
+	for (i = 0; i < 4; i++) {
+		priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
+				I40E_IEEE_ETS_PRIO_1_SHIFT);
+		dcbcfg->etsrec.prioritytable[i*2] =  priority;
+		priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
+				I40E_IEEE_ETS_PRIO_0_SHIFT);
+		dcbcfg->etsrec.prioritytable[i*2 + 1] = priority;
+		offset++;
+	}
+
+	/* TC Bandwidth Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
+
+	/* TSA Assignment Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		dcbcfg->etsrec.tsatable[i] = buf[offset++];
+}
+
+/**
+ * i40e_parse_ieee_pfccfg_tlv
+ * @tlv: IEEE 802.1Qaz PFC CFG TLV
+ * @dcbcfg: Local store to update PFC CFG data
+ *
+ * Parses IEEE 802.1Qaz PFC CFG TLV
+ **/
+static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
+				       struct i40e_dcbx_config *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+
+	/* ----------------------------------------
+	 * |will-|MBC  | Re-  | PFC |  PFC Enable  |
+	 * |ing  |     |served| cap |              |
+	 * -----------------------------------------
+	 * |1bit | 1bit|2 bits|4bits| 1 octet      |
+	 */
+	dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >>
+				   I40E_IEEE_PFC_WILLING_SHIFT);
+	dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >>
+			       I40E_IEEE_PFC_MBC_SHIFT);
+	dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >>
+				  I40E_IEEE_PFC_CAP_SHIFT);
+	dcbcfg->pfc.pfcenable = buf[1];
+}
+
+/**
+ * i40e_parse_ieee_app_tlv
+ * @tlv: IEEE 802.1Qaz APP TLV
+ * @dcbcfg: Local store to update APP PRIO data
+ *
+ * Parses IEEE 802.1Qaz APP PRIO TLV
+ **/
+static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
+				    struct i40e_dcbx_config *dcbcfg)
+{
+	u16 typelength;
+	u16 offset = 0;
+	u16 length;
+	int i = 0;
+	u8 *buf;
+
+	typelength = ntohs(tlv->typelength);
+	length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
+		       I40E_LLDP_TLV_LEN_SHIFT);
+	buf = tlv->tlvinfo;
+
+	/* The App priority table starts 5 octets after TLV header */
+	length -= (sizeof(tlv->ouisubtype) + 1);
+
+	/* Move offset to App Priority Table */
+	offset++;
+
+	/* Application Priority Table (3 octets)
+	 * Octets:|         1          |    2    |    3    |
+	 *        -----------------------------------------
+	 *        |Priority|Rsrvd| Sel |    Protocol ID    |
+	 *        -----------------------------------------
+	 *   Bits:|23    21|20 19|18 16|15                0|
+	 *        -----------------------------------------
+	 */
+	while (offset < length) {
+		dcbcfg->app[i].priority = (u8)((buf[offset] &
+						I40E_IEEE_APP_PRIO_MASK) >>
+					       I40E_IEEE_APP_PRIO_SHIFT);
+		dcbcfg->app[i].selector = (u8)((buf[offset] &
+						I40E_IEEE_APP_SEL_MASK) >>
+					       I40E_IEEE_APP_SEL_SHIFT);
+		dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
+					     buf[offset + 2];
+		/* Move to next app */
+		offset += 3;
+		i++;
+		if (i >= I40E_DCBX_MAX_APPS)
+			break;
+	}
+
+	dcbcfg->numapps = i;
+}
+
+/**
+ * i40e_parse_ieee_tlv
+ * @tlv: IEEE 802.1Qaz TLV
+ * @dcbcfg: Local store to update ETS REC data
+ *
+ * Get the TLV subtype and send it to parsing function
+ * based on the subtype value
+ **/
+static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
+				struct i40e_dcbx_config *dcbcfg)
+{
+	u32 ouisubtype;
+	u8 subtype;
+
+	ouisubtype = ntohl(tlv->ouisubtype);
+	subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
+		       I40E_LLDP_TLV_SUBTYPE_SHIFT);
+	switch (subtype) {
+	case I40E_IEEE_SUBTYPE_ETS_CFG:
+		i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
+		break;
+	case I40E_IEEE_SUBTYPE_ETS_REC:
+		i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
+		break;
+	case I40E_IEEE_SUBTYPE_PFC_CFG:
+		i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
+		break;
+	case I40E_IEEE_SUBTYPE_APP_PRI:
+		i40e_parse_ieee_app_tlv(tlv, dcbcfg);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * i40e_parse_cee_pgcfg_tlv
+ * @tlv: CEE DCBX PG CFG TLV
+ * @dcbcfg: Local store to update ETS CFG data
+ *
+ * Parses CEE DCBX PG CFG TLV
+ **/
+static void i40e_parse_cee_pgcfg_tlv(struct i40e_cee_feat_tlv *tlv,
+				     struct i40e_dcbx_config *dcbcfg)
+{
+	struct i40e_dcb_ets_config *etscfg;
+	u8 *buf = tlv->tlvinfo;
+	u16 offset = 0;
+	u8 priority;
+	int i;
+
+	etscfg = &dcbcfg->etscfg;
+
+	if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
+		etscfg->willing = 1;
+
+	etscfg->cbs = 0;
+	/* Priority Group Table (4 octets)
+	 * Octets:|    1    |    2    |    3    |    4    |
+	 *        -----------------------------------------
+	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
+	 *        -----------------------------------------
+	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
+	 *        -----------------------------------------
+	 */
+	for (i = 0; i < 4; i++) {
+		priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_1_MASK) >>
+				 I40E_CEE_PGID_PRIO_1_SHIFT);
+		etscfg->prioritytable[i * 2] =  priority;
+		priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_0_MASK) >>
+				 I40E_CEE_PGID_PRIO_0_SHIFT);
+		etscfg->prioritytable[i * 2 + 1] = priority;
+		offset++;
+	}
+
+	/* PG Percentage Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		etscfg->tcbwtable[i] = buf[offset++];
+
+	/* Number of TCs supported (1 octet) */
+	etscfg->maxtcs = buf[offset];
+}
+
+/**
+ * i40e_parse_cee_pfccfg_tlv
+ * @tlv: CEE DCBX PFC CFG TLV
+ * @dcbcfg: Local store to update PFC CFG data
+ *
+ * Parses CEE DCBX PFC CFG TLV
+ **/
+static void i40e_parse_cee_pfccfg_tlv(struct i40e_cee_feat_tlv *tlv,
+				      struct i40e_dcbx_config *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+
+	if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
+		dcbcfg->pfc.willing = 1;
+
+	/* ------------------------
+	 * | PFC Enable | PFC TCs |
+	 * ------------------------
+	 * | 1 octet    | 1 octet |
+	 */
+	dcbcfg->pfc.pfcenable = buf[0];
+	dcbcfg->pfc.pfccap = buf[1];
+}
+
+/**
+ * i40e_parse_cee_app_tlv
+ * @tlv: CEE DCBX APP TLV
+ * @dcbcfg: Local store to update APP PRIO data
+ *
+ * Parses CEE DCBX APP PRIO TLV
+ **/
+static void i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv *tlv,
+				   struct i40e_dcbx_config *dcbcfg)
+{
+	u16 length, typelength, offset = 0;
+	struct i40e_cee_app_prio *app;
+	u8 i;
+
+	typelength = ntohs(tlv->hdr.typelen);
+	length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
+		       I40E_LLDP_TLV_LEN_SHIFT);
+
+	dcbcfg->numapps = length / sizeof(*app);
+
+	if (!dcbcfg->numapps)
+		return;
+	if (dcbcfg->numapps > I40E_DCBX_MAX_APPS)
+		dcbcfg->numapps = I40E_DCBX_MAX_APPS;
+
+	for (i = 0; i < dcbcfg->numapps; i++) {
+		u8 up, selector;
+
+		app = (struct i40e_cee_app_prio *)(tlv->tlvinfo + offset);
+		for (up = 0; up < I40E_MAX_USER_PRIORITY; up++) {
+			if (app->prio_map & BIT(up))
+				break;
+		}
+		dcbcfg->app[i].priority = up;
+
+		/* Get Selector from lower 2 bits, and convert to IEEE */
+		selector = (app->upper_oui_sel & I40E_CEE_APP_SELECTOR_MASK);
+		switch (selector) {
+		case I40E_CEE_APP_SEL_ETHTYPE:
+			dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
+			break;
+		case I40E_CEE_APP_SEL_TCPIP:
+			dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
+			break;
+		default:
+			/* Keep selector as it is for unknown types */
+			dcbcfg->app[i].selector = selector;
+		}
+
+		dcbcfg->app[i].protocolid = ntohs(app->protocol);
+		/* Move to next app */
+		offset += sizeof(*app);
+	}
+}
+
+/**
+ * i40e_parse_cee_tlv
+ * @tlv: CEE DCBX TLV
+ * @dcbcfg: Local store to update DCBX config data
+ *
+ * Get the TLV subtype and send it to parsing function
+ * based on the subtype value
+ **/
+static void i40e_parse_cee_tlv(struct i40e_lldp_org_tlv *tlv,
+			       struct i40e_dcbx_config *dcbcfg)
+{
+	u16 len, tlvlen, sublen, typelength;
+	struct i40e_cee_feat_tlv *sub_tlv;
+	u8 subtype, feat_tlv_count = 0;
+	u32 ouisubtype;
+
+	ouisubtype = ntohl(tlv->ouisubtype);
+	subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
+		       I40E_LLDP_TLV_SUBTYPE_SHIFT);
+	/* Return if not CEE DCBX */
+	if (subtype != I40E_CEE_DCBX_TYPE)
+		return;
+
+	typelength = ntohs(tlv->typelength);
+	tlvlen = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
+			I40E_LLDP_TLV_LEN_SHIFT);
+	len = sizeof(tlv->typelength) + sizeof(ouisubtype) +
+	      sizeof(struct i40e_cee_ctrl_tlv);
+	/* Return if no CEE DCBX Feature TLVs */
+	if (tlvlen <= len)
+		return;
+
+	sub_tlv = (struct i40e_cee_feat_tlv *)((char *)tlv + len);
+	while (feat_tlv_count < I40E_CEE_MAX_FEAT_TYPE) {
+		typelength = ntohs(sub_tlv->hdr.typelen);
+		sublen = (u16)((typelength &
+				I40E_LLDP_TLV_LEN_MASK) >>
+				I40E_LLDP_TLV_LEN_SHIFT);
+		subtype = (u8)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
+				I40E_LLDP_TLV_TYPE_SHIFT);
+		switch (subtype) {
+		case I40E_CEE_SUBTYPE_PG_CFG:
+			i40e_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
+			break;
+		case I40E_CEE_SUBTYPE_PFC_CFG:
+			i40e_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
+			break;
+		case I40E_CEE_SUBTYPE_APP_PRI:
+			i40e_parse_cee_app_tlv(sub_tlv, dcbcfg);
+			break;
+		default:
+			return; /* Invalid Sub-type return */
+		}
+		feat_tlv_count++;
+		/* Move to next sub TLV */
+		sub_tlv = (struct i40e_cee_feat_tlv *)((char *)sub_tlv +
+						sizeof(sub_tlv->hdr.typelen) +
+						sublen);
+	}
+}
+
+/**
+ * i40e_parse_org_tlv
+ * @tlv: Organization specific TLV
+ * @dcbcfg: Local store to update ETS REC data
+ *
+ * Currently only IEEE 802.1Qaz TLV is supported, all others
+ * will be returned
+ **/
+static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
+			       struct i40e_dcbx_config *dcbcfg)
+{
+	u32 ouisubtype;
+	u32 oui;
+
+	ouisubtype = ntohl(tlv->ouisubtype);
+	oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >>
+		    I40E_LLDP_TLV_OUI_SHIFT);
+	switch (oui) {
+	case I40E_IEEE_8021QAZ_OUI:
+		i40e_parse_ieee_tlv(tlv, dcbcfg);
+		break;
+	case I40E_CEE_DCBX_OUI:
+		i40e_parse_cee_tlv(tlv, dcbcfg);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * i40e_lldp_to_dcb_config
+ * @lldpmib: LLDPDU to be parsed
+ * @dcbcfg: store for LLDPDU data
+ *
+ * Parse DCB configuration from the LLDPDU
+ **/
+int i40e_lldp_to_dcb_config(u8 *lldpmib,
+			    struct i40e_dcbx_config *dcbcfg)
+{
+	struct i40e_lldp_org_tlv *tlv;
+	u16 typelength;
+	u16 offset = 0;
+	int ret = 0;
+	u16 length;
+	u16 type;
+
+	if (!lldpmib || !dcbcfg)
+		return I40E_ERR_PARAM;
+
+	/* set to the start of LLDPDU */
+	lldpmib += ETH_HLEN;
+	tlv = (struct i40e_lldp_org_tlv *)lldpmib;
+	while (1) {
+		typelength = ntohs(tlv->typelength);
+		type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
+			     I40E_LLDP_TLV_TYPE_SHIFT);
+		length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
+			       I40E_LLDP_TLV_LEN_SHIFT);
+		offset += sizeof(typelength) + length;
+
+		/* END TLV or beyond LLDPDU size */
+		if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE))
+			break;
+
+		switch (type) {
+		case I40E_TLV_TYPE_ORG:
+			i40e_parse_org_tlv(tlv, dcbcfg);
+			break;
+		default:
+			break;
+		}
+
+		/* Move to next TLV */
+		tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
+						    sizeof(tlv->typelength) +
+						    length);
+	}
+
+	return ret;
+}
+
+/**
+ * i40e_aq_get_dcb_config
+ * @hw: pointer to the hw struct
+ * @mib_type: mib type for the query
+ * @bridgetype: bridge type for the query (remote)
+ * @dcbcfg: store for LLDPDU data
+ *
+ * Query DCB configuration from the Firmware
+ **/
+int i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
+			   u8 bridgetype,
+			   struct i40e_dcbx_config *dcbcfg)
+{
+	struct i40e_virt_mem mem;
+	int ret = 0;
+	u8 *lldpmib;
+
+	/* Allocate the LLDPDU */
+	ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
+	if (ret)
+		return ret;
+
+	lldpmib = (u8 *)mem.va;
+	ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
+				   (void *)lldpmib, I40E_LLDPDU_SIZE,
+				   NULL, NULL, NULL);
+	if (ret)
+		goto free_mem;
+
+	/* Parse LLDP MIB to get dcb configuration */
+	ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
+
+free_mem:
+	i40e_free_virt_mem(hw, &mem);
+	return ret;
+}
+
+/**
+ * i40e_cee_to_dcb_v1_config
+ * @cee_cfg: pointer to CEE v1 response configuration struct
+ * @dcbcfg: DCB configuration struct
+ *
+ * Convert CEE v1 configuration from firmware to DCB configuration
+ **/
+static void i40e_cee_to_dcb_v1_config(
+			struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg,
+			struct i40e_dcbx_config *dcbcfg)
+{
+	u16 status, tlv_status = le16_to_cpu(cee_cfg->tlv_status);
+	u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
+	u8 i, tc, err;
+
+	/* CEE PG data to ETS config */
+	dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
+
+	/* Note that the FW creates the oper_prio_tc nibbles reversed
+	 * from those in the CEE Priority Group sub-TLV.
+	 */
+	for (i = 0; i < 4; i++) {
+		tc = (u8)((cee_cfg->oper_prio_tc[i] &
+			 I40E_CEE_PGID_PRIO_0_MASK) >>
+			 I40E_CEE_PGID_PRIO_0_SHIFT);
+		dcbcfg->etscfg.prioritytable[i * 2] =  tc;
+		tc = (u8)((cee_cfg->oper_prio_tc[i] &
+			 I40E_CEE_PGID_PRIO_1_MASK) >>
+			 I40E_CEE_PGID_PRIO_1_SHIFT);
+		dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
+	}
+
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
+
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
+			/* Map it to next empty TC */
+			dcbcfg->etscfg.prioritytable[i] =
+						cee_cfg->oper_num_tc - 1;
+			dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
+		} else {
+			dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
+		}
+	}
+
+	/* CEE PFC data to ETS config */
+	dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
+	dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
+
+	status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
+		  I40E_AQC_CEE_APP_STATUS_SHIFT;
+	err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
+	/* Add APPs if Error is False */
+	if (!err) {
+		/* CEE operating configuration supports FCoE/iSCSI/FIP only */
+		dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
+
+		/* FCoE APP */
+		dcbcfg->app[0].priority =
+			(app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
+			 I40E_AQC_CEE_APP_FCOE_SHIFT;
+		dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
+		dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
+
+		/* iSCSI APP */
+		dcbcfg->app[1].priority =
+			(app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
+			 I40E_AQC_CEE_APP_ISCSI_SHIFT;
+		dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
+		dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
+
+		/* FIP APP */
+		dcbcfg->app[2].priority =
+			(app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
+			 I40E_AQC_CEE_APP_FIP_SHIFT;
+		dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
+		dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
+	}
+}
+
+/**
+ * i40e_cee_to_dcb_config
+ * @cee_cfg: pointer to CEE configuration struct
+ * @dcbcfg: DCB configuration struct
+ *
+ * Convert CEE configuration from firmware to DCB configuration
+ **/
+static void i40e_cee_to_dcb_config(
+				struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg,
+				struct i40e_dcbx_config *dcbcfg)
+{
+	u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
+	u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
+	u8 i, tc, err, sync, oper;
+
+	/* CEE PG data to ETS config */
+	dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
+
+	/* Note that the FW creates the oper_prio_tc nibbles reversed
+	 * from those in the CEE Priority Group sub-TLV.
+	 */
+	for (i = 0; i < 4; i++) {
+		tc = (u8)((cee_cfg->oper_prio_tc[i] &
+			 I40E_CEE_PGID_PRIO_0_MASK) >>
+			 I40E_CEE_PGID_PRIO_0_SHIFT);
+		dcbcfg->etscfg.prioritytable[i * 2] =  tc;
+		tc = (u8)((cee_cfg->oper_prio_tc[i] &
+			 I40E_CEE_PGID_PRIO_1_MASK) >>
+			 I40E_CEE_PGID_PRIO_1_SHIFT);
+		dcbcfg->etscfg.prioritytable[i * 2 + 1] = tc;
+	}
+
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
+
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
+			/* Map it to next empty TC */
+			dcbcfg->etscfg.prioritytable[i] =
+						cee_cfg->oper_num_tc - 1;
+			dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
+		} else {
+			dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
+		}
+	}
+
+	/* CEE PFC data to ETS config */
+	dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
+	dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
+
+	i = 0;
+	status = (tlv_status & I40E_AQC_CEE_FCOE_STATUS_MASK) >>
+		  I40E_AQC_CEE_FCOE_STATUS_SHIFT;
+	err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
+	sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
+	oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
+	/* Add FCoE APP if Error is False and Oper/Sync is True */
+	if (!err && sync && oper) {
+		/* FCoE APP */
+		dcbcfg->app[i].priority =
+			(app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
+			 I40E_AQC_CEE_APP_FCOE_SHIFT;
+		dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
+		dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE;
+		i++;
+	}
+
+	status = (tlv_status & I40E_AQC_CEE_ISCSI_STATUS_MASK) >>
+		  I40E_AQC_CEE_ISCSI_STATUS_SHIFT;
+	err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
+	sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
+	oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
+	/* Add iSCSI APP if Error is False and Oper/Sync is True */
+	if (!err && sync && oper) {
+		/* iSCSI APP */
+		dcbcfg->app[i].priority =
+			(app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
+			 I40E_AQC_CEE_APP_ISCSI_SHIFT;
+		dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
+		dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI;
+		i++;
+	}
+
+	status = (tlv_status & I40E_AQC_CEE_FIP_STATUS_MASK) >>
+		  I40E_AQC_CEE_FIP_STATUS_SHIFT;
+	err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
+	sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
+	oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
+	/* Add FIP APP if Error is False and Oper/Sync is True */
+	if (!err && sync && oper) {
+		/* FIP APP */
+		dcbcfg->app[i].priority =
+			(app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
+			 I40E_AQC_CEE_APP_FIP_SHIFT;
+		dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
+		dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FIP;
+		i++;
+	}
+	dcbcfg->numapps = i;
+}
+
+/**
+ * i40e_get_ieee_dcb_config
+ * @hw: pointer to the hw struct
+ *
+ * Get IEEE mode DCB configuration from the Firmware
+ **/
+static int i40e_get_ieee_dcb_config(struct i40e_hw *hw)
+{
+	int ret = 0;
+
+	/* IEEE mode */
+	hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE;
+	/* Get Local DCB Config */
+	ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
+				     &hw->local_dcbx_config);
+	if (ret)
+		goto out;
+
+	/* Get Remote DCB Config */
+	ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
+				     I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
+				     &hw->remote_dcbx_config);
+	/* Don't treat ENOENT as an error for Remote MIBs */
+	if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
+		ret = 0;
+
+out:
+	return ret;
+}
+
+/**
+ * i40e_get_dcb_config
+ * @hw: pointer to the hw struct
+ *
+ * Get DCB configuration from the Firmware
+ **/
+int i40e_get_dcb_config(struct i40e_hw *hw)
+{
+	struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg;
+	struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg;
+	int ret = 0;
+
+	/* If Firmware version < v4.33 on X710/XL710, IEEE only */
+	if ((hw->mac.type == I40E_MAC_XL710) &&
+	    (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) ||
+	      (hw->aq.fw_maj_ver < 4)))
+		return i40e_get_ieee_dcb_config(hw);
+
+	/* If Firmware version == v4.33 on X710/XL710, use old CEE struct */
+	if ((hw->mac.type == I40E_MAC_XL710) &&
+	    ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 33))) {
+		ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg,
+						 sizeof(cee_v1_cfg), NULL);
+		if (!ret) {
+			/* CEE mode */
+			hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
+			hw->local_dcbx_config.tlv_status =
+					le16_to_cpu(cee_v1_cfg.tlv_status);
+			i40e_cee_to_dcb_v1_config(&cee_v1_cfg,
+						  &hw->local_dcbx_config);
+		}
+	} else {
+		ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg,
+						 sizeof(cee_cfg), NULL);
+		if (!ret) {
+			/* CEE mode */
+			hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
+			hw->local_dcbx_config.tlv_status =
+					le32_to_cpu(cee_cfg.tlv_status);
+			i40e_cee_to_dcb_config(&cee_cfg,
+					       &hw->local_dcbx_config);
+		}
+	}
+
+	/* CEE mode not enabled try querying IEEE data */
+	if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
+		return i40e_get_ieee_dcb_config(hw);
+
+	if (ret)
+		goto out;
+
+	/* Get CEE DCB Desired Config */
+	ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
+				     &hw->desired_dcbx_config);
+	if (ret)
+		goto out;
+
+	/* Get Remote DCB Config */
+	ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
+				     I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
+				     &hw->remote_dcbx_config);
+	/* Don't treat ENOENT as an error for Remote MIBs */
+	if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
+		ret = 0;
+
+out:
+	return ret;
+}
+
+/**
+ * i40e_init_dcb
+ * @hw: pointer to the hw struct
+ * @enable_mib_change: enable mib change event
+ *
+ * Update DCB configuration from the Firmware
+ **/
+int i40e_init_dcb(struct i40e_hw *hw, bool enable_mib_change)
+{
+	struct i40e_lldp_variables lldp_cfg;
+	u8 adminstatus = 0;
+	int ret = 0;
+
+	if (!hw->func_caps.dcb)
+		return I40E_NOT_SUPPORTED;
+
+	/* Read LLDP NVM area */
+	if (hw->flags & I40E_HW_FLAG_FW_LLDP_PERSISTENT) {
+		u8 offset = 0;
+
+		if (hw->mac.type == I40E_MAC_XL710)
+			offset = I40E_LLDP_CURRENT_STATUS_XL710_OFFSET;
+		else if (hw->mac.type == I40E_MAC_X722)
+			offset = I40E_LLDP_CURRENT_STATUS_X722_OFFSET;
+		else
+			return I40E_NOT_SUPPORTED;
+
+		ret = i40e_read_nvm_module_data(hw,
+						I40E_SR_EMP_SR_SETTINGS_PTR,
+						offset,
+						I40E_LLDP_CURRENT_STATUS_OFFSET,
+						I40E_LLDP_CURRENT_STATUS_SIZE,
+						&lldp_cfg.adminstatus);
+	} else {
+		ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
+	}
+	if (ret)
+		return I40E_ERR_NOT_READY;
+
+	/* Get the LLDP AdminStatus for the current port */
+	adminstatus = lldp_cfg.adminstatus >> (hw->port * 4);
+	adminstatus &= 0xF;
+
+	/* LLDP agent disabled */
+	if (!adminstatus) {
+		hw->dcbx_status = I40E_DCBX_STATUS_DISABLED;
+		return I40E_ERR_NOT_READY;
+	}
+
+	/* Get DCBX status */
+	ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
+	if (ret)
+		return ret;
+
+	/* Check the DCBX Status */
+	if (hw->dcbx_status == I40E_DCBX_STATUS_DONE ||
+	    hw->dcbx_status == I40E_DCBX_STATUS_IN_PROGRESS) {
+		/* Get current DCBX configuration */
+		ret = i40e_get_dcb_config(hw);
+		if (ret)
+			return ret;
+	} else if (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED) {
+		return I40E_ERR_NOT_READY;
+	}
+
+	/* Configure the LLDP MIB change event */
+	if (enable_mib_change)
+		ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
+
+	return ret;
+}
+
+/**
+ * i40e_get_fw_lldp_status
+ * @hw: pointer to the hw struct
+ * @lldp_status: pointer to the status enum
+ *
+ * Get status of FW Link Layer Discovery Protocol (LLDP) Agent.
+ * Status of agent is reported via @lldp_status parameter.
+ **/
+int
+i40e_get_fw_lldp_status(struct i40e_hw *hw,
+			enum i40e_get_fw_lldp_status_resp *lldp_status)
+{
+	struct i40e_virt_mem mem;
+	u8 *lldpmib;
+	int ret;
+
+	if (!lldp_status)
+		return I40E_ERR_PARAM;
+
+	/* Allocate buffer for the LLDPDU */
+	ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
+	if (ret)
+		return ret;
+
+	lldpmib = (u8 *)mem.va;
+	ret = i40e_aq_get_lldp_mib(hw, 0, 0, (void *)lldpmib,
+				   I40E_LLDPDU_SIZE, NULL, NULL, NULL);
+
+	if (!ret) {
+		*lldp_status = I40E_GET_FW_LLDP_STATUS_ENABLED;
+	} else if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT) {
+		/* MIB is not available yet but the agent is running */
+		*lldp_status = I40E_GET_FW_LLDP_STATUS_ENABLED;
+		ret = 0;
+	} else if (hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
+		*lldp_status = I40E_GET_FW_LLDP_STATUS_DISABLED;
+		ret = 0;
+	}
+
+	i40e_free_virt_mem(hw, &mem);
+	return ret;
+}
+
+/**
+ * i40e_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
+ * @tlv: Fill the ETS config data in IEEE format
+ * @dcbcfg: Local store which holds the DCB Config
+ *
+ * Prepare IEEE 802.1Qaz ETS CFG TLV
+ **/
+static void i40e_add_ieee_ets_tlv(struct i40e_lldp_org_tlv *tlv,
+				  struct i40e_dcbx_config *dcbcfg)
+{
+	u8 priority0, priority1, maxtcwilling = 0;
+	struct i40e_dcb_ets_config *etscfg;
+	u16 offset = 0, typelength, i;
+	u8 *buf = tlv->tlvinfo;
+	u32 ouisubtype;
+
+	typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
+			I40E_IEEE_ETS_TLV_LENGTH);
+	tlv->typelength = htons(typelength);
+
+	ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
+			I40E_IEEE_SUBTYPE_ETS_CFG);
+	tlv->ouisubtype = htonl(ouisubtype);
+
+	/* First Octet post subtype
+	 * --------------------------
+	 * |will-|CBS  | Re-  | Max |
+	 * |ing  |     |served| TCs |
+	 * --------------------------
+	 * |1bit | 1bit|3 bits|3bits|
+	 */
+	etscfg = &dcbcfg->etscfg;
+	if (etscfg->willing)
+		maxtcwilling = BIT(I40E_IEEE_ETS_WILLING_SHIFT);
+	maxtcwilling |= etscfg->maxtcs & I40E_IEEE_ETS_MAXTC_MASK;
+	buf[offset] = maxtcwilling;
+
+	/* Move offset to Priority Assignment Table */
+	offset++;
+
+	/* Priority Assignment Table (4 octets)
+	 * Octets:|    1    |    2    |    3    |    4    |
+	 *        -----------------------------------------
+	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
+	 *        -----------------------------------------
+	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
+	 *        -----------------------------------------
+	 */
+	for (i = 0; i < 4; i++) {
+		priority0 = etscfg->prioritytable[i * 2] & 0xF;
+		priority1 = etscfg->prioritytable[i * 2 + 1] & 0xF;
+		buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
+				priority1;
+		offset++;
+	}
+
+	/* TC Bandwidth Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		buf[offset++] = etscfg->tcbwtable[i];
+
+	/* TSA Assignment Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		buf[offset++] = etscfg->tsatable[i];
+}
+
+/**
+ * i40e_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
+ * @tlv: Fill ETS Recommended TLV in IEEE format
+ * @dcbcfg: Local store which holds the DCB Config
+ *
+ * Prepare IEEE 802.1Qaz ETS REC TLV
+ **/
+static void i40e_add_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
+				     struct i40e_dcbx_config *dcbcfg)
+{
+	struct i40e_dcb_ets_config *etsrec;
+	u16 offset = 0, typelength, i;
+	u8 priority0, priority1;
+	u8 *buf = tlv->tlvinfo;
+	u32 ouisubtype;
+
+	typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
+			I40E_IEEE_ETS_TLV_LENGTH);
+	tlv->typelength = htons(typelength);
+
+	ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
+			I40E_IEEE_SUBTYPE_ETS_REC);
+	tlv->ouisubtype = htonl(ouisubtype);
+
+	etsrec = &dcbcfg->etsrec;
+	/* First Octet is reserved */
+	/* Move offset to Priority Assignment Table */
+	offset++;
+
+	/* Priority Assignment Table (4 octets)
+	 * Octets:|    1    |    2    |    3    |    4    |
+	 *        -----------------------------------------
+	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
+	 *        -----------------------------------------
+	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
+	 *        -----------------------------------------
+	 */
+	for (i = 0; i < 4; i++) {
+		priority0 = etsrec->prioritytable[i * 2] & 0xF;
+		priority1 = etsrec->prioritytable[i * 2 + 1] & 0xF;
+		buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
+				priority1;
+		offset++;
+	}
+
+	/* TC Bandwidth Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		buf[offset++] = etsrec->tcbwtable[i];
+
+	/* TSA Assignment Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+		buf[offset++] = etsrec->tsatable[i];
+}
+
+/**
+ * i40e_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
+ * @tlv: Fill PFC TLV in IEEE format
+ * @dcbcfg: Local store to get PFC CFG data
+ *
+ * Prepare IEEE 802.1Qaz PFC CFG TLV
+ **/
+static void i40e_add_ieee_pfc_tlv(struct i40e_lldp_org_tlv *tlv,
+				  struct i40e_dcbx_config *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+	u32 ouisubtype;
+	u16 typelength;
+
+	typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
+			I40E_IEEE_PFC_TLV_LENGTH);
+	tlv->typelength = htons(typelength);
+
+	ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
+			I40E_IEEE_SUBTYPE_PFC_CFG);
+	tlv->ouisubtype = htonl(ouisubtype);
+
+	/* ----------------------------------------
+	 * |will-|MBC  | Re-  | PFC |  PFC Enable  |
+	 * |ing  |     |served| cap |              |
+	 * -----------------------------------------
+	 * |1bit | 1bit|2 bits|4bits| 1 octet      |
+	 */
+	if (dcbcfg->pfc.willing)
+		buf[0] = BIT(I40E_IEEE_PFC_WILLING_SHIFT);
+
+	if (dcbcfg->pfc.mbc)
+		buf[0] |= BIT(I40E_IEEE_PFC_MBC_SHIFT);
+
+	buf[0] |= dcbcfg->pfc.pfccap & 0xF;
+	buf[1] = dcbcfg->pfc.pfcenable;
+}
+
+/**
+ * i40e_add_ieee_app_pri_tlv -  Prepare APP TLV in IEEE format
+ * @tlv: Fill APP TLV in IEEE format
+ * @dcbcfg: Local store to get APP CFG data
+ *
+ * Prepare IEEE 802.1Qaz APP CFG TLV
+ **/
+static void i40e_add_ieee_app_pri_tlv(struct i40e_lldp_org_tlv *tlv,
+				      struct i40e_dcbx_config *dcbcfg)
+{
+	u16 typelength, length, offset = 0;
+	u8 priority, selector, i = 0;
+	u8 *buf = tlv->tlvinfo;
+	u32 ouisubtype;
+
+	/* No APP TLVs then just return */
+	if (dcbcfg->numapps == 0)
+		return;
+	ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
+			I40E_IEEE_SUBTYPE_APP_PRI);
+	tlv->ouisubtype = htonl(ouisubtype);
+
+	/* Move offset to App Priority Table */
+	offset++;
+	/* Application Priority Table (3 octets)
+	 * Octets:|         1          |    2    |    3    |
+	 *        -----------------------------------------
+	 *        |Priority|Rsrvd| Sel |    Protocol ID    |
+	 *        -----------------------------------------
+	 *   Bits:|23    21|20 19|18 16|15                0|
+	 *        -----------------------------------------
+	 */
+	while (i < dcbcfg->numapps) {
+		priority = dcbcfg->app[i].priority & 0x7;
+		selector = dcbcfg->app[i].selector & 0x7;
+		buf[offset] = (priority << I40E_IEEE_APP_PRIO_SHIFT) | selector;
+		buf[offset + 1] = (dcbcfg->app[i].protocolid >> 0x8) & 0xFF;
+		buf[offset + 2] =  dcbcfg->app[i].protocolid & 0xFF;
+		/* Move to next app */
+		offset += 3;
+		i++;
+		if (i >= I40E_DCBX_MAX_APPS)
+			break;
+	}
+	/* length includes size of ouisubtype + 1 reserved + 3*numapps */
+	length = sizeof(tlv->ouisubtype) + 1 + (i * 3);
+	typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
+		(length & 0x1FF));
+	tlv->typelength = htons(typelength);
+}
+
+/**
+ * i40e_add_dcb_tlv - Add all IEEE TLVs
+ * @tlv: pointer to org tlv
+ * @dcbcfg: pointer to modified dcbx config structure *
+ * @tlvid: tlv id to be added
+ * add tlv information
+ **/
+static void i40e_add_dcb_tlv(struct i40e_lldp_org_tlv *tlv,
+			     struct i40e_dcbx_config *dcbcfg,
+			     u16 tlvid)
+{
+	switch (tlvid) {
+	case I40E_IEEE_TLV_ID_ETS_CFG:
+		i40e_add_ieee_ets_tlv(tlv, dcbcfg);
+		break;
+	case I40E_IEEE_TLV_ID_ETS_REC:
+		i40e_add_ieee_etsrec_tlv(tlv, dcbcfg);
+		break;
+	case I40E_IEEE_TLV_ID_PFC_CFG:
+		i40e_add_ieee_pfc_tlv(tlv, dcbcfg);
+		break;
+	case I40E_IEEE_TLV_ID_APP_PRI:
+		i40e_add_ieee_app_pri_tlv(tlv, dcbcfg);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * i40e_set_dcb_config - Set the local LLDP MIB to FW
+ * @hw: pointer to the hw struct
+ *
+ * Set DCB configuration to the Firmware
+ **/
+int i40e_set_dcb_config(struct i40e_hw *hw)
+{
+	struct i40e_dcbx_config *dcbcfg;
+	struct i40e_virt_mem mem;
+	u8 mib_type, *lldpmib;
+	u16 miblen;
+	int ret;
+
+	/* update the hw local config */
+	dcbcfg = &hw->local_dcbx_config;
+	/* Allocate the LLDPDU */
+	ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
+	if (ret)
+		return ret;
+
+	mib_type = SET_LOCAL_MIB_AC_TYPE_LOCAL_MIB;
+	if (dcbcfg->app_mode == I40E_DCBX_APPS_NON_WILLING) {
+		mib_type |= SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS <<
+			    SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS_SHIFT;
+	}
+	lldpmib = (u8 *)mem.va;
+	i40e_dcb_config_to_lldp(lldpmib, &miblen, dcbcfg);
+	ret = i40e_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen, NULL);
+
+	i40e_free_virt_mem(hw, &mem);
+	return ret;
+}
+
+/**
+ * i40e_dcb_config_to_lldp - Convert Dcbconfig to MIB format
+ * @lldpmib: pointer to mib to be output
+ * @miblen: pointer to u16 for length of lldpmib
+ * @dcbcfg: store for LLDPDU data
+ *
+ * send DCB configuration to FW
+ **/
+int i40e_dcb_config_to_lldp(u8 *lldpmib, u16 *miblen,
+			    struct i40e_dcbx_config *dcbcfg)
+{
+	u16 length, offset = 0, tlvid, typelength;
+	struct i40e_lldp_org_tlv *tlv;
+
+	tlv = (struct i40e_lldp_org_tlv *)lldpmib;
+	tlvid = I40E_TLV_ID_START;
+	do {
+		i40e_add_dcb_tlv(tlv, dcbcfg, tlvid++);
+		typelength = ntohs(tlv->typelength);
+		length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
+				I40E_LLDP_TLV_LEN_SHIFT);
+		if (length)
+			offset += length + I40E_IEEE_TLV_HEADER_LENGTH;
+		/* END TLV or beyond LLDPDU size */
+		if (tlvid >= I40E_TLV_ID_END_OF_LLDPPDU ||
+		    offset >= I40E_LLDPDU_SIZE)
+			break;
+		/* Move to next TLV */
+		if (length)
+			tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
+			      sizeof(tlv->typelength) + length);
+	} while (tlvid < I40E_TLV_ID_END_OF_LLDPPDU);
+	*miblen = offset;
+	return I40E_SUCCESS;
+}
+
+/**
+ * i40e_dcb_hw_rx_fifo_config
+ * @hw: pointer to the hw struct
+ * @ets_mode: Strict Priority or Round Robin mode
+ * @non_ets_mode: Strict Priority or Round Robin
+ * @max_exponent: Exponent to calculate max refill credits
+ * @lltc_map: Low latency TC bitmap
+ *
+ * Configure HW Rx FIFO as part of DCB configuration.
+ **/
+void i40e_dcb_hw_rx_fifo_config(struct i40e_hw *hw,
+				enum i40e_dcb_arbiter_mode ets_mode,
+				enum i40e_dcb_arbiter_mode non_ets_mode,
+				u32 max_exponent,
+				u8 lltc_map)
+{
+	u32 reg = rd32(hw, I40E_PRTDCB_RETSC);
+
+	reg &= ~I40E_PRTDCB_RETSC_ETS_MODE_MASK;
+	reg |= ((u32)ets_mode << I40E_PRTDCB_RETSC_ETS_MODE_SHIFT) &
+		I40E_PRTDCB_RETSC_ETS_MODE_MASK;
+
+	reg &= ~I40E_PRTDCB_RETSC_NON_ETS_MODE_MASK;
+	reg |= ((u32)non_ets_mode << I40E_PRTDCB_RETSC_NON_ETS_MODE_SHIFT) &
+		I40E_PRTDCB_RETSC_NON_ETS_MODE_MASK;
+
+	reg &= ~I40E_PRTDCB_RETSC_ETS_MAX_EXP_MASK;
+	reg |= (max_exponent << I40E_PRTDCB_RETSC_ETS_MAX_EXP_SHIFT) &
+		I40E_PRTDCB_RETSC_ETS_MAX_EXP_MASK;
+
+	reg &= ~I40E_PRTDCB_RETSC_LLTC_MASK;
+	reg |= (lltc_map << I40E_PRTDCB_RETSC_LLTC_SHIFT) &
+		I40E_PRTDCB_RETSC_LLTC_MASK;
+	wr32(hw, I40E_PRTDCB_RETSC, reg);
+}
+
+/**
+ * i40e_dcb_hw_rx_cmd_monitor_config
+ * @hw: pointer to the hw struct
+ * @num_tc: Total number of traffic class
+ * @num_ports: Total number of ports on device
+ *
+ * Configure HW Rx command monitor as part of DCB configuration.
+ **/
+void i40e_dcb_hw_rx_cmd_monitor_config(struct i40e_hw *hw,
+				       u8 num_tc, u8 num_ports)
+{
+	u32 threshold;
+	u32 fifo_size;
+	u32 reg;
+
+	/* Set the threshold and fifo_size based on number of ports */
+	switch (num_ports) {
+	case 1:
+		threshold = I40E_DCB_1_PORT_THRESHOLD;
+		fifo_size = I40E_DCB_1_PORT_FIFO_SIZE;
+		break;
+	case 2:
+		if (num_tc > 4) {
+			threshold = I40E_DCB_2_PORT_THRESHOLD_HIGH_NUM_TC;
+			fifo_size = I40E_DCB_2_PORT_FIFO_SIZE_HIGH_NUM_TC;
+		} else {
+			threshold = I40E_DCB_2_PORT_THRESHOLD_LOW_NUM_TC;
+			fifo_size = I40E_DCB_2_PORT_FIFO_SIZE_LOW_NUM_TC;
+		}
+		break;
+	case 4:
+		if (num_tc > 4) {
+			threshold = I40E_DCB_4_PORT_THRESHOLD_HIGH_NUM_TC;
+			fifo_size = I40E_DCB_4_PORT_FIFO_SIZE_HIGH_NUM_TC;
+		} else {
+			threshold = I40E_DCB_4_PORT_THRESHOLD_LOW_NUM_TC;
+			fifo_size = I40E_DCB_4_PORT_FIFO_SIZE_LOW_NUM_TC;
+		}
+		break;
+	default:
+		i40e_debug(hw, I40E_DEBUG_DCB, "Invalid num_ports %u.\n",
+			   (u32)num_ports);
+		return;
+	}
+
+	/* The hardware manual describes setting up of I40E_PRT_SWR_PM_THR
+	 * based on the number of ports and traffic classes for a given port as
+	 * part of DCB configuration.
+	 */
+	reg = rd32(hw, I40E_PRT_SWR_PM_THR);
+	reg &= ~I40E_PRT_SWR_PM_THR_THRESHOLD_MASK;
+	reg |= (threshold << I40E_PRT_SWR_PM_THR_THRESHOLD_SHIFT) &
+		I40E_PRT_SWR_PM_THR_THRESHOLD_MASK;
+	wr32(hw, I40E_PRT_SWR_PM_THR, reg);
+
+	reg = rd32(hw, I40E_PRTDCB_RPPMC);
+	reg &= ~I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_MASK;
+	reg |= (fifo_size << I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_SHIFT) &
+		I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_MASK;
+	wr32(hw, I40E_PRTDCB_RPPMC, reg);
+}
+
+/**
+ * i40e_dcb_hw_pfc_config
+ * @hw: pointer to the hw struct
+ * @pfc_en: Bitmap of PFC enabled priorities
+ * @prio_tc: priority to tc assignment indexed by priority
+ *
+ * Configure HW Priority Flow Controller as part of DCB configuration.
+ **/
+void i40e_dcb_hw_pfc_config(struct i40e_hw *hw,
+			    u8 pfc_en, u8 *prio_tc)
+{
+	u16 refresh_time = (u16)I40E_DEFAULT_PAUSE_TIME / 2;
+	u32 link_speed = hw->phy.link_info.link_speed;
+	u8 first_pfc_prio = 0;
+	u8 num_pfc_tc = 0;
+	u8 tc2pfc = 0;
+	u32 reg;
+	u8 i;
+
+	/* Get Number of PFC TCs and TC2PFC map */
+	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
+		if (pfc_en & BIT(i)) {
+			if (!first_pfc_prio)
+				first_pfc_prio = i;
+			/* Set bit for the PFC TC */
+			tc2pfc |= BIT(prio_tc[i]);
+			num_pfc_tc++;
+		}
+	}
+
+	switch (link_speed) {
+	case I40E_LINK_SPEED_10GB:
+		reg = rd32(hw, I40E_PRTDCB_MFLCN);
+		reg |= BIT(I40E_PRTDCB_MFLCN_DPF_SHIFT) &
+			I40E_PRTDCB_MFLCN_DPF_MASK;
+		reg &= ~I40E_PRTDCB_MFLCN_RFCE_MASK;
+		reg &= ~I40E_PRTDCB_MFLCN_RPFCE_MASK;
+		if (pfc_en) {
+			reg |= BIT(I40E_PRTDCB_MFLCN_RPFCM_SHIFT) &
+				I40E_PRTDCB_MFLCN_RPFCM_MASK;
+			reg |= ((u32)pfc_en << I40E_PRTDCB_MFLCN_RPFCE_SHIFT) &
+				I40E_PRTDCB_MFLCN_RPFCE_MASK;
+		}
+		wr32(hw, I40E_PRTDCB_MFLCN, reg);
+
+		reg = rd32(hw, I40E_PRTDCB_FCCFG);
+		reg &= ~I40E_PRTDCB_FCCFG_TFCE_MASK;
+		if (pfc_en)
+			reg |= (I40E_DCB_PFC_ENABLED <<
+				I40E_PRTDCB_FCCFG_TFCE_SHIFT) &
+				I40E_PRTDCB_FCCFG_TFCE_MASK;
+		wr32(hw, I40E_PRTDCB_FCCFG, reg);
+
+		/* FCTTV and FCRTV to be set by default */
+		break;
+	case I40E_LINK_SPEED_40GB:
+		reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP);
+		reg &= ~I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP_MASK;
+		wr32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP, reg);
+
+		reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP);
+		reg &= ~I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP_MASK;
+		reg |= BIT(I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP_SHIFT) &
+			I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP_MASK;
+		wr32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP, reg);
+
+		reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE);
+		reg &= ~I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE_MASK;
+		reg |= ((u32)pfc_en <<
+			   I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE_SHIFT) &
+			I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE_MASK;
+		wr32(hw, I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE, reg);
+
+		reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE);
+		reg &= ~I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE_MASK;
+		reg |= ((u32)pfc_en <<
+			   I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE_SHIFT) &
+			I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE_MASK;
+		wr32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE, reg);
+
+		for (i = 0; i < I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_MAX_INDEX; i++) {
+			reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER(i));
+			reg &= ~I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_MASK;
+			if (pfc_en) {
+				reg |= ((u32)refresh_time <<
+					I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_SHIFT) &
+					I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_MASK;
+			}
+			wr32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER(i), reg);
+		}
+		/* PRTMAC_HSEC_CTL_TX_PAUSE_QUANTA default value is 0xFFFF
+		 * for all user priorities
+		 */
+		break;
+	}
+
+	reg = rd32(hw, I40E_PRTDCB_TC2PFC);
+	reg &= ~I40E_PRTDCB_TC2PFC_TC2PFC_MASK;
+	reg |= ((u32)tc2pfc << I40E_PRTDCB_TC2PFC_TC2PFC_SHIFT) &
+		I40E_PRTDCB_TC2PFC_TC2PFC_MASK;
+	wr32(hw, I40E_PRTDCB_TC2PFC, reg);
+
+	reg = rd32(hw, I40E_PRTDCB_RUP);
+	reg &= ~I40E_PRTDCB_RUP_NOVLANUP_MASK;
+	reg |= ((u32)first_pfc_prio << I40E_PRTDCB_RUP_NOVLANUP_SHIFT) &
+		 I40E_PRTDCB_RUP_NOVLANUP_MASK;
+	wr32(hw, I40E_PRTDCB_RUP, reg);
+
+	reg = rd32(hw, I40E_PRTDCB_TDPMC);
+	reg &= ~I40E_PRTDCB_TDPMC_TCPM_MODE_MASK;
+	if (num_pfc_tc > I40E_DCB_PFC_FORCED_NUM_TC) {
+		reg |= BIT(I40E_PRTDCB_TDPMC_TCPM_MODE_SHIFT) &
+			I40E_PRTDCB_TDPMC_TCPM_MODE_MASK;
+	}
+	wr32(hw, I40E_PRTDCB_TDPMC, reg);
+
+	reg = rd32(hw, I40E_PRTDCB_TCPMC);
+	reg &= ~I40E_PRTDCB_TCPMC_TCPM_MODE_MASK;
+	if (num_pfc_tc > I40E_DCB_PFC_FORCED_NUM_TC) {
+		reg |= BIT(I40E_PRTDCB_TCPMC_TCPM_MODE_SHIFT) &
+			I40E_PRTDCB_TCPMC_TCPM_MODE_MASK;
+	}
+	wr32(hw, I40E_PRTDCB_TCPMC, reg);
+}
+
+/**
+ * i40e_dcb_hw_set_num_tc
+ * @hw: pointer to the hw struct
+ * @num_tc: number of traffic classes
+ *
+ * Configure number of traffic classes in HW
+ **/
+void i40e_dcb_hw_set_num_tc(struct i40e_hw *hw, u8 num_tc)
+{
+	u32 reg = rd32(hw, I40E_PRTDCB_GENC);
+
+	reg &= ~I40E_PRTDCB_GENC_NUMTC_MASK;
+	reg |= ((u32)num_tc << I40E_PRTDCB_GENC_NUMTC_SHIFT) &
+		I40E_PRTDCB_GENC_NUMTC_MASK;
+	wr32(hw, I40E_PRTDCB_GENC, reg);
+}
+
+/**
+ * i40e_dcb_hw_get_num_tc
+ * @hw: pointer to the hw struct
+ *
+ * Returns number of traffic classes configured in HW
+ **/
+u8 i40e_dcb_hw_get_num_tc(struct i40e_hw *hw)
+{
+	u32 reg = rd32(hw, I40E_PRTDCB_GENC);
+
+	return (u8)((reg & I40E_PRTDCB_GENC_NUMTC_MASK) >>
+		I40E_PRTDCB_GENC_NUMTC_SHIFT);
+}
+
+/**
+ * i40e_dcb_hw_rx_ets_bw_config
+ * @hw: pointer to the hw struct
+ * @bw_share: Bandwidth share indexed per traffic class
+ * @mode: Strict Priority or Round Robin mode between UP sharing same
+ * traffic class
+ * @prio_type: TC is ETS enabled or strict priority
+ *
+ * Configure HW Rx ETS bandwidth as part of DCB configuration.
+ **/
+void i40e_dcb_hw_rx_ets_bw_config(struct i40e_hw *hw, u8 *bw_share,
+				  u8 *mode, u8 *prio_type)
+{
+	u32 reg;
+	u8 i;
+
+	for (i = 0; i <= I40E_PRTDCB_RETSTCC_MAX_INDEX; i++) {
+		reg = rd32(hw, I40E_PRTDCB_RETSTCC(i));
+		reg &= ~(I40E_PRTDCB_RETSTCC_BWSHARE_MASK     |
+			 I40E_PRTDCB_RETSTCC_UPINTC_MODE_MASK |
+			 I40E_PRTDCB_RETSTCC_ETSTC_SHIFT);
+		reg |= ((u32)bw_share[i] << I40E_PRTDCB_RETSTCC_BWSHARE_SHIFT) &
+			 I40E_PRTDCB_RETSTCC_BWSHARE_MASK;
+		reg |= ((u32)mode[i] << I40E_PRTDCB_RETSTCC_UPINTC_MODE_SHIFT) &
+			 I40E_PRTDCB_RETSTCC_UPINTC_MODE_MASK;
+		reg |= ((u32)prio_type[i] << I40E_PRTDCB_RETSTCC_ETSTC_SHIFT) &
+			 I40E_PRTDCB_RETSTCC_ETSTC_MASK;
+		wr32(hw, I40E_PRTDCB_RETSTCC(i), reg);
+	}
+}
+
+/**
+ * i40e_dcb_hw_rx_up2tc_config
+ * @hw: pointer to the hw struct
+ * @prio_tc: priority to tc assignment indexed by priority
+ *
+ * Configure HW Rx UP2TC map as part of DCB configuration.
+ **/
+void i40e_dcb_hw_rx_up2tc_config(struct i40e_hw *hw, u8 *prio_tc)
+{
+	u32 reg = rd32(hw, I40E_PRTDCB_RUP2TC);
+#define I40E_UP2TC_REG(val, i) \
+		(((val) << I40E_PRTDCB_RUP2TC_UP##i##TC_SHIFT) & \
+		  I40E_PRTDCB_RUP2TC_UP##i##TC_MASK)
+
+	reg |= I40E_UP2TC_REG(prio_tc[0], 0);
+	reg |= I40E_UP2TC_REG(prio_tc[1], 1);
+	reg |= I40E_UP2TC_REG(prio_tc[2], 2);
+	reg |= I40E_UP2TC_REG(prio_tc[3], 3);
+	reg |= I40E_UP2TC_REG(prio_tc[4], 4);
+	reg |= I40E_UP2TC_REG(prio_tc[5], 5);
+	reg |= I40E_UP2TC_REG(prio_tc[6], 6);
+	reg |= I40E_UP2TC_REG(prio_tc[7], 7);
+
+	wr32(hw, I40E_PRTDCB_RUP2TC, reg);
+}
+
+/**
+ * i40e_dcb_hw_calculate_pool_sizes - configure dcb pool sizes
+ * @hw: pointer to the hw struct
+ * @num_ports: Number of available ports on the device
+ * @eee_enabled: EEE enabled for the given port
+ * @pfc_en: Bit map of PFC enabled traffic classes
+ * @mfs_tc: Array of max frame size for each traffic class
+ * @pb_cfg: pointer to packet buffer configuration
+ *
+ * Calculate the shared and dedicated per TC pool sizes,
+ * watermarks and threshold values.
+ **/
+void i40e_dcb_hw_calculate_pool_sizes(struct i40e_hw *hw,
+				      u8 num_ports, bool eee_enabled,
+				      u8 pfc_en, u32 *mfs_tc,
+				      struct i40e_rx_pb_config *pb_cfg)
+{
+	u32 pool_size[I40E_MAX_TRAFFIC_CLASS];
+	u32 high_wm[I40E_MAX_TRAFFIC_CLASS];
+	u32 low_wm[I40E_MAX_TRAFFIC_CLASS];
+	u32 total_pool_size = 0;
+	int shared_pool_size; /* Need signed variable */
+	u32 port_pb_size;
+	u32 mfs_max = 0;
+	u32 pcirtt;
+	u8 i;
+
+	/* Get the MFS(max) for the port */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		if (mfs_tc[i] > mfs_max)
+			mfs_max = mfs_tc[i];
+	}
+
+	pcirtt = I40E_BT2B(I40E_PCIRTT_LINK_SPEED_10G);
+
+	/* Calculate effective Rx PB size per port */
+	port_pb_size = I40E_DEVICE_RPB_SIZE / num_ports;
+	if (eee_enabled)
+		port_pb_size -= I40E_BT2B(I40E_EEE_TX_LPI_EXIT_TIME);
+	port_pb_size -= mfs_max;
+
+	/* Step 1 Calculating tc pool/shared pool sizes and watermarks */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		if (pfc_en & BIT(i)) {
+			low_wm[i] = (I40E_DCB_WATERMARK_START_FACTOR *
+				     mfs_tc[i]) + pcirtt;
+			high_wm[i] = low_wm[i];
+			high_wm[i] += ((mfs_max > I40E_MAX_FRAME_SIZE)
+					? mfs_max : I40E_MAX_FRAME_SIZE);
+			pool_size[i] = high_wm[i];
+			pool_size[i] += I40E_BT2B(I40E_STD_DV_TC(mfs_max,
+								mfs_tc[i]));
+		} else {
+			low_wm[i] = 0;
+			pool_size[i] = (I40E_DCB_WATERMARK_START_FACTOR *
+					mfs_tc[i]) + pcirtt;
+			high_wm[i] = pool_size[i];
+		}
+		total_pool_size += pool_size[i];
+	}
+
+	shared_pool_size = port_pb_size - total_pool_size;
+	if (shared_pool_size > 0) {
+		pb_cfg->shared_pool_size = shared_pool_size;
+		pb_cfg->shared_pool_high_wm = shared_pool_size;
+		pb_cfg->shared_pool_low_wm = 0;
+		for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+			pb_cfg->shared_pool_low_thresh[i] = 0;
+			pb_cfg->shared_pool_high_thresh[i] = shared_pool_size;
+			pb_cfg->tc_pool_size[i] = pool_size[i];
+			pb_cfg->tc_pool_high_wm[i] = high_wm[i];
+			pb_cfg->tc_pool_low_wm[i] = low_wm[i];
+		}
+
+	} else {
+		i40e_debug(hw, I40E_DEBUG_DCB,
+			   "The shared pool size for the port is negative %d.\n",
+			   shared_pool_size);
+	}
+}
+
+/**
+ * i40e_dcb_hw_rx_pb_config
+ * @hw: pointer to the hw struct
+ * @old_pb_cfg: Existing Rx Packet buffer configuration
+ * @new_pb_cfg: New Rx Packet buffer configuration
+ *
+ * Program the Rx Packet Buffer registers.
+ **/
+void i40e_dcb_hw_rx_pb_config(struct i40e_hw *hw,
+			      struct i40e_rx_pb_config *old_pb_cfg,
+			      struct i40e_rx_pb_config *new_pb_cfg)
+{
+	u32 old_val;
+	u32 new_val;
+	u32 reg;
+	u8 i;
+
+	/* The Rx Packet buffer register programming needs to be done in a
+	 * certain order and the following code is based on that
+	 * requirement.
+	 */
+
+	/* Program the shared pool low water mark per port if decreasing */
+	old_val = old_pb_cfg->shared_pool_low_wm;
+	new_val = new_pb_cfg->shared_pool_low_wm;
+	if (new_val < old_val) {
+		reg = rd32(hw, I40E_PRTRPB_SLW);
+		reg &= ~I40E_PRTRPB_SLW_SLW_MASK;
+		reg |= (new_val << I40E_PRTRPB_SLW_SLW_SHIFT) &
+			I40E_PRTRPB_SLW_SLW_MASK;
+		wr32(hw, I40E_PRTRPB_SLW, reg);
+	}
+
+	/* Program the shared pool low threshold and tc pool
+	 * low water mark per TC that are decreasing.
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		old_val = old_pb_cfg->shared_pool_low_thresh[i];
+		new_val = new_pb_cfg->shared_pool_low_thresh[i];
+		if (new_val < old_val) {
+			reg = rd32(hw, I40E_PRTRPB_SLT(i));
+			reg &= ~I40E_PRTRPB_SLT_SLT_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_SLT_SLT_TCN_SHIFT) &
+				I40E_PRTRPB_SLT_SLT_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_SLT(i), reg);
+		}
+
+		old_val = old_pb_cfg->tc_pool_low_wm[i];
+		new_val = new_pb_cfg->tc_pool_low_wm[i];
+		if (new_val < old_val) {
+			reg = rd32(hw, I40E_PRTRPB_DLW(i));
+			reg &= ~I40E_PRTRPB_DLW_DLW_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_DLW_DLW_TCN_SHIFT) &
+				I40E_PRTRPB_DLW_DLW_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_DLW(i), reg);
+		}
+	}
+
+	/* Program the shared pool high water mark per port if decreasing */
+	old_val = old_pb_cfg->shared_pool_high_wm;
+	new_val = new_pb_cfg->shared_pool_high_wm;
+	if (new_val < old_val) {
+		reg = rd32(hw, I40E_PRTRPB_SHW);
+		reg &= ~I40E_PRTRPB_SHW_SHW_MASK;
+		reg |= (new_val << I40E_PRTRPB_SHW_SHW_SHIFT) &
+			I40E_PRTRPB_SHW_SHW_MASK;
+		wr32(hw, I40E_PRTRPB_SHW, reg);
+	}
+
+	/* Program the shared pool high threshold and tc pool
+	 * high water mark per TC that are decreasing.
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		old_val = old_pb_cfg->shared_pool_high_thresh[i];
+		new_val = new_pb_cfg->shared_pool_high_thresh[i];
+		if (new_val < old_val) {
+			reg = rd32(hw, I40E_PRTRPB_SHT(i));
+			reg &= ~I40E_PRTRPB_SHT_SHT_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_SHT_SHT_TCN_SHIFT) &
+				I40E_PRTRPB_SHT_SHT_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_SHT(i), reg);
+		}
+
+		old_val = old_pb_cfg->tc_pool_high_wm[i];
+		new_val = new_pb_cfg->tc_pool_high_wm[i];
+		if (new_val < old_val) {
+			reg = rd32(hw, I40E_PRTRPB_DHW(i));
+			reg &= ~I40E_PRTRPB_DHW_DHW_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_DHW_DHW_TCN_SHIFT) &
+				I40E_PRTRPB_DHW_DHW_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_DHW(i), reg);
+		}
+	}
+
+	/* Write Dedicated Pool Sizes per TC */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		new_val = new_pb_cfg->tc_pool_size[i];
+		reg = rd32(hw, I40E_PRTRPB_DPS(i));
+		reg &= ~I40E_PRTRPB_DPS_DPS_TCN_MASK;
+		reg |= (new_val << I40E_PRTRPB_DPS_DPS_TCN_SHIFT) &
+			I40E_PRTRPB_DPS_DPS_TCN_MASK;
+		wr32(hw, I40E_PRTRPB_DPS(i), reg);
+	}
+
+	/* Write Shared Pool Size per port */
+	new_val = new_pb_cfg->shared_pool_size;
+	reg = rd32(hw, I40E_PRTRPB_SPS);
+	reg &= ~I40E_PRTRPB_SPS_SPS_MASK;
+	reg |= (new_val << I40E_PRTRPB_SPS_SPS_SHIFT) &
+		I40E_PRTRPB_SPS_SPS_MASK;
+	wr32(hw, I40E_PRTRPB_SPS, reg);
+
+	/* Program the shared pool low water mark per port if increasing */
+	old_val = old_pb_cfg->shared_pool_low_wm;
+	new_val = new_pb_cfg->shared_pool_low_wm;
+	if (new_val > old_val) {
+		reg = rd32(hw, I40E_PRTRPB_SLW);
+		reg &= ~I40E_PRTRPB_SLW_SLW_MASK;
+		reg |= (new_val << I40E_PRTRPB_SLW_SLW_SHIFT) &
+			I40E_PRTRPB_SLW_SLW_MASK;
+		wr32(hw, I40E_PRTRPB_SLW, reg);
+	}
+
+	/* Program the shared pool low threshold and tc pool
+	 * low water mark per TC that are increasing.
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		old_val = old_pb_cfg->shared_pool_low_thresh[i];
+		new_val = new_pb_cfg->shared_pool_low_thresh[i];
+		if (new_val > old_val) {
+			reg = rd32(hw, I40E_PRTRPB_SLT(i));
+			reg &= ~I40E_PRTRPB_SLT_SLT_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_SLT_SLT_TCN_SHIFT) &
+				I40E_PRTRPB_SLT_SLT_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_SLT(i), reg);
+		}
+
+		old_val = old_pb_cfg->tc_pool_low_wm[i];
+		new_val = new_pb_cfg->tc_pool_low_wm[i];
+		if (new_val > old_val) {
+			reg = rd32(hw, I40E_PRTRPB_DLW(i));
+			reg &= ~I40E_PRTRPB_DLW_DLW_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_DLW_DLW_TCN_SHIFT) &
+				I40E_PRTRPB_DLW_DLW_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_DLW(i), reg);
+		}
+	}
+
+	/* Program the shared pool high water mark per port if increasing */
+	old_val = old_pb_cfg->shared_pool_high_wm;
+	new_val = new_pb_cfg->shared_pool_high_wm;
+	if (new_val > old_val) {
+		reg = rd32(hw, I40E_PRTRPB_SHW);
+		reg &= ~I40E_PRTRPB_SHW_SHW_MASK;
+		reg |= (new_val << I40E_PRTRPB_SHW_SHW_SHIFT) &
+			I40E_PRTRPB_SHW_SHW_MASK;
+		wr32(hw, I40E_PRTRPB_SHW, reg);
+	}
+
+	/* Program the shared pool high threshold and tc pool
+	 * high water mark per TC that are increasing.
+	 */
+	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+		old_val = old_pb_cfg->shared_pool_high_thresh[i];
+		new_val = new_pb_cfg->shared_pool_high_thresh[i];
+		if (new_val > old_val) {
+			reg = rd32(hw, I40E_PRTRPB_SHT(i));
+			reg &= ~I40E_PRTRPB_SHT_SHT_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_SHT_SHT_TCN_SHIFT) &
+				I40E_PRTRPB_SHT_SHT_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_SHT(i), reg);
+		}
+
+		old_val = old_pb_cfg->tc_pool_high_wm[i];
+		new_val = new_pb_cfg->tc_pool_high_wm[i];
+		if (new_val > old_val) {
+			reg = rd32(hw, I40E_PRTRPB_DHW(i));
+			reg &= ~I40E_PRTRPB_DHW_DHW_TCN_MASK;
+			reg |= (new_val << I40E_PRTRPB_DHW_DHW_TCN_SHIFT) &
+				I40E_PRTRPB_DHW_DHW_TCN_MASK;
+			wr32(hw, I40E_PRTRPB_DHW(i), reg);
+		}
+	}
+}
+
+/**
+ * _i40e_read_lldp_cfg - generic read of LLDP Configuration data from NVM
+ * @hw: pointer to the HW structure
+ * @lldp_cfg: pointer to hold lldp configuration variables
+ * @module: address of the module pointer
+ * @word_offset: offset of LLDP configuration
+ *
+ * Reads the LLDP configuration data from NVM using passed addresses
+ **/
+static int _i40e_read_lldp_cfg(struct i40e_hw *hw,
+			       struct i40e_lldp_variables *lldp_cfg,
+			       u8 module, u32 word_offset)
+{
+	u32 address, offset = (2 * word_offset);
+	__le16 raw_mem;
+	int ret;
+	u16 mem;
+
+	ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+	if (ret)
+		return ret;
+
+	ret = i40e_aq_read_nvm(hw, 0x0, module * 2, sizeof(raw_mem), &raw_mem,
+			       true, NULL);
+	i40e_release_nvm(hw);
+	if (ret)
+		return ret;
+
+	mem = le16_to_cpu(raw_mem);
+	/* Check if this pointer needs to be read in word size or 4K sector
+	 * units.
+	 */
+	if (mem & I40E_PTR_TYPE)
+		address = (0x7FFF & mem) * 4096;
+	else
+		address = (0x7FFF & mem) * 2;
+
+	ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+	if (ret)
+		goto err_lldp_cfg;
+
+	ret = i40e_aq_read_nvm(hw, module, offset, sizeof(raw_mem), &raw_mem,
+			       true, NULL);
+	i40e_release_nvm(hw);
+	if (ret)
+		return ret;
+
+	mem = le16_to_cpu(raw_mem);
+	offset = mem + word_offset;
+	offset *= 2;
+
+	ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+	if (ret)
+		goto err_lldp_cfg;
+
+	ret = i40e_aq_read_nvm(hw, 0, address + offset,
+			       sizeof(struct i40e_lldp_variables), lldp_cfg,
+			       true, NULL);
+	i40e_release_nvm(hw);
+
+err_lldp_cfg:
+	return ret;
+}
+
+/**
+ * i40e_read_lldp_cfg - read LLDP Configuration data from NVM
+ * @hw: pointer to the HW structure
+ * @lldp_cfg: pointer to hold lldp configuration variables
+ *
+ * Reads the LLDP configuration data from NVM
+ **/
+int i40e_read_lldp_cfg(struct i40e_hw *hw,
+		       struct i40e_lldp_variables *lldp_cfg)
+{
+	int ret = 0;
+	u32 mem;
+
+	if (!lldp_cfg)
+		return I40E_ERR_PARAM;
+
+	ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+	if (ret)
+		return ret;
+
+	ret = i40e_aq_read_nvm(hw, I40E_SR_NVM_CONTROL_WORD, 0, sizeof(mem),
+			       &mem, true, NULL);
+	i40e_release_nvm(hw);
+	if (ret)
+		return ret;
+
+	/* Read a bit that holds information whether we are running flat or
+	 * structured NVM image. Flat image has LLDP configuration in shadow
+	 * ram, so there is a need to pass different addresses for both cases.
+	 */
+	if (mem & I40E_SR_NVM_MAP_STRUCTURE_TYPE) {
+		/* Flat NVM case */
+		ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_SR_EMP_MODULE_PTR,
+					  I40E_SR_LLDP_CFG_PTR);
+	} else {
+		/* Good old structured NVM image */
+		ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_EMP_MODULE_PTR,
+					  I40E_NVM_LLDP_CFG_PTR);
+	}
+
+	return ret;
+}