[dpdk-dev] [PATCH v4 07/32] net/ice/base: add data center bridging (DCB)

[Wenzhuo Lu <wenzhuo.lu@intel.com>]

From: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>

Add the code to handle DCB.

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
---
 drivers/net/ice/base/ice_dcb.c | 1385 ++++++++++++++++++++++++++++++++++++++++
 drivers/net/ice/base/ice_dcb.h |  220 +++++++
 2 files changed, 1605 insertions(+)
 create mode 100644 drivers/net/ice/base/ice_dcb.c
 create mode 100644 drivers/net/ice/base/ice_dcb.h

diff --git a/drivers/net/ice/base/ice_dcb.c b/drivers/net/ice/base/ice_dcb.c
new file mode 100644
index 0000000..76411d5
--- /dev/null
+++ b/drivers/net/ice/base/ice_dcb.c
@@ -0,0 +1,1385 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2001-2018
+ */
+
+#include "ice_common.h"
+#include "ice_sched.h"
+#include "ice_dcb.h"
+
+/**
+ * ice_aq_get_lldp_mib
+ * @hw: pointer to the hw struct
+ * @bridge_type: type of bridge requested
+ * @mib_type: Local, Remote or both Local and Remote MIBs
+ * @buf: pointer to the caller-supplied buffer to store the MIB block
+ * @buf_size: size of the buffer (in bytes)
+ * @local_len: length of the returned Local LLDP MIB
+ * @remote_len: length of the returned Remote LLDP MIB
+ * @cd: pointer to command details structure or NULL
+ *
+ * Requests the complete LLDP MIB (entire packet). (0x0A00)
+ */
+enum ice_status
+ice_aq_get_lldp_mib(struct ice_hw *hw, u8 bridge_type, u8 mib_type, void *buf,
+		    u16 buf_size, u16 *local_len, u16 *remote_len,
+		    struct ice_sq_cd *cd)
+{
+	struct ice_aqc_lldp_get_mib *cmd;
+	struct ice_aq_desc desc;
+	enum ice_status status;
+
+	cmd = &desc.params.lldp_get_mib;
+
+	if (buf_size == 0 || !buf)
+		return ICE_ERR_PARAM;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_get_mib);
+
+	cmd->type = mib_type & ICE_AQ_LLDP_MIB_TYPE_M;
+	cmd->type |= (bridge_type << ICE_AQ_LLDP_BRID_TYPE_S) &
+		ICE_AQ_LLDP_BRID_TYPE_M;
+
+	desc.datalen = CPU_TO_LE16(buf_size);
+
+	status = ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
+	if (!status) {
+		if (local_len)
+			*local_len = LE16_TO_CPU(cmd->local_len);
+		if (remote_len)
+			*remote_len = LE16_TO_CPU(cmd->remote_len);
+	}
+
+	return status;
+}
+
+/**
+ * ice_aq_cfg_lldp_mib_change
+ * @hw: pointer to the hw struct
+ * @ena_update: Enable or Disable event posting
+ * @cd: pointer to command details structure or NULL
+ *
+ * Enable or Disable posting of an event on ARQ when LLDP MIB
+ * associated with the interface changes (0x0A01)
+ */
+enum ice_status
+ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update,
+			   struct ice_sq_cd *cd)
+{
+	struct ice_aqc_lldp_set_mib_change *cmd;
+	struct ice_aq_desc desc;
+
+	cmd = &desc.params.lldp_set_event;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_mib_change);
+
+	if (!ena_update)
+		cmd->command |= ICE_AQ_LLDP_MIB_UPDATE_DIS;
+
+	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+}
+
+
+/**
+ * ice_aq_start_lldp
+ * @hw: pointer to the hw struct
+ * @cd: pointer to command details structure or NULL
+ *
+ * Start the embedded LLDP Agent on all ports. (0x0A06)
+ */
+enum ice_status ice_aq_start_lldp(struct ice_hw *hw, struct ice_sq_cd *cd)
+{
+	struct ice_aqc_lldp_start *cmd;
+	struct ice_aq_desc desc;
+
+	cmd = &desc.params.lldp_start;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_start);
+
+	cmd->command = ICE_AQ_LLDP_AGENT_START;
+
+	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+}
+
+/**
+ * ice_aq_set_lldp_mib - Set the LLDP MIB
+ * @hw: pointer to the hw struct
+ * @mib_type: Local, Remote or both Local and Remote MIBs
+ * @buf: pointer to the caller-supplied buffer to store the MIB block
+ * @buf_size: size of the buffer (in bytes)
+ * @cd: pointer to command details structure or NULL
+ *
+ * Set the LLDP MIB. (0x0A08)
+ */
+enum ice_status
+ice_aq_set_lldp_mib(struct ice_hw *hw, u8 mib_type, void *buf, u16 buf_size,
+		    struct ice_sq_cd *cd)
+{
+	struct ice_aqc_lldp_set_local_mib *cmd;
+	struct ice_aq_desc desc;
+
+	cmd = &desc.params.lldp_set_mib;
+
+	if (buf_size == 0 || !buf)
+		return ICE_ERR_PARAM;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_local_mib);
+
+	desc.flags |= CPU_TO_LE16((u16)ICE_AQ_FLAG_RD);
+	desc.datalen = CPU_TO_LE16(buf_size);
+
+	cmd->type = mib_type;
+	cmd->length = CPU_TO_LE16(buf_size);
+
+	return ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
+}
+
+/**
+ * ice_get_dcbx_status
+ * @hw: pointer to the hw struct
+ *
+ * Get the DCBX status from the Firmware
+ */
+u8 ice_get_dcbx_status(struct ice_hw *hw)
+{
+	u32 reg;
+
+	reg = rd32(hw, PRTDCB_GENS);
+	return (u8)((reg & PRTDCB_GENS_DCBX_STATUS_M) >>
+		    PRTDCB_GENS_DCBX_STATUS_S);
+}
+
+/**
+ * ice_parse_ieee_ets_common_tlv
+ * @buf: Data buffer to be parsed for ETS CFG/REC data
+ * @ets_cfg: Container to store parsed data
+ *
+ * Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV
+ */
+static void
+ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
+{
+	u8 offset = 0;
+	int i;
+
+	/* 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++) {
+		ets_cfg->prio_table[i * 2] =
+			((buf[offset] & ICE_IEEE_ETS_PRIO_1_M) >>
+			 ICE_IEEE_ETS_PRIO_1_S);
+		ets_cfg->prio_table[i * 2 + 1] =
+			((buf[offset] & ICE_IEEE_ETS_PRIO_0_M) >>
+			 ICE_IEEE_ETS_PRIO_0_S);
+		offset++;
+	}
+
+	/* TC Bandwidth Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 *
+	 * TSA Assignment Table (8 octets)
+	 * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 */
+	for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) {
+		ets_cfg->tcbwtable[i] = buf[offset];
+		ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
+	}
+}
+
+/**
+ * ice_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
+ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
+			  struct ice_dcbx_cfg *dcbcfg)
+{
+	struct ice_dcb_ets_cfg *etscfg;
+	u8 *buf = tlv->tlvinfo;
+
+	/* First Octet post subtype
+	 * --------------------------
+	 * |will-|CBS  | Re-  | Max |
+	 * |ing  |     |served| TCs |
+	 * --------------------------
+	 * |1bit | 1bit|3 bits|3bits|
+	 */
+	etscfg = &dcbcfg->etscfg;
+	etscfg->willing = ((buf[0] & ICE_IEEE_ETS_WILLING_M) >>
+			   ICE_IEEE_ETS_WILLING_S);
+	etscfg->cbs = ((buf[0] & ICE_IEEE_ETS_CBS_M) >> ICE_IEEE_ETS_CBS_S);
+	etscfg->maxtcs = ((buf[0] & ICE_IEEE_ETS_MAXTC_M) >>
+			  ICE_IEEE_ETS_MAXTC_S);
+
+	/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
+	ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
+}
+
+/**
+ * ice_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
+ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
+			  struct ice_dcbx_cfg *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+
+	/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
+	ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
+}
+
+/**
+ * ice_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
+ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
+			  struct ice_dcbx_cfg *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+
+	/* ----------------------------------------
+	 * |will-|MBC  | Re-  | PFC |  PFC Enable  |
+	 * |ing  |     |served| cap |              |
+	 * -----------------------------------------
+	 * |1bit | 1bit|2 bits|4bits| 1 octet      |
+	 */
+	dcbcfg->pfc.willing = ((buf[0] & ICE_IEEE_PFC_WILLING_M) >>
+			       ICE_IEEE_PFC_WILLING_S);
+	dcbcfg->pfc.mbc = ((buf[0] & ICE_IEEE_PFC_MBC_M) >> ICE_IEEE_PFC_MBC_S);
+	dcbcfg->pfc.pfccap = ((buf[0] & ICE_IEEE_PFC_CAP_M) >>
+			      ICE_IEEE_PFC_CAP_S);
+	dcbcfg->pfc.pfcena = buf[1];
+}
+
+/**
+ * ice_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
+ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
+		       struct ice_dcbx_cfg *dcbcfg)
+{
+	u16 offset = 0;
+	u16 typelen;
+	int i = 0;
+	u16 len;
+	u8 *buf;
+
+	typelen = NTOHS(tlv->typelen);
+	len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
+	buf = tlv->tlvinfo;
+
+	/* Removing sizeof(ouisubtype) and reserved byte from len.
+	 * Remaining len div 3 is number of APP TLVs.
+	 */
+	len -= (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 < len) {
+		dcbcfg->app[i].priority = ((buf[offset] &
+					    ICE_IEEE_APP_PRIO_M) >>
+					   ICE_IEEE_APP_PRIO_S);
+		dcbcfg->app[i].selector = ((buf[offset] &
+					    ICE_IEEE_APP_SEL_M) >>
+					   ICE_IEEE_APP_SEL_S);
+		dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
+			buf[offset + 2];
+		/* Move to next app */
+		offset += 3;
+		i++;
+		if (i >= ICE_DCBX_MAX_APPS)
+			break;
+	}
+
+	dcbcfg->numapps = i;
+}
+
+/**
+ * ice_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
+ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
+{
+	u32 ouisubtype;
+	u8 subtype;
+
+	ouisubtype = NTOHL(tlv->ouisubtype);
+	subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
+		       ICE_LLDP_TLV_SUBTYPE_S);
+	switch (subtype) {
+	case ICE_IEEE_SUBTYPE_ETS_CFG:
+		ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
+		break;
+	case ICE_IEEE_SUBTYPE_ETS_REC:
+		ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
+		break;
+	case ICE_IEEE_SUBTYPE_PFC_CFG:
+		ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
+		break;
+	case ICE_IEEE_SUBTYPE_APP_PRI:
+		ice_parse_ieee_app_tlv(tlv, dcbcfg);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * ice_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
+ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
+			struct ice_dcbx_cfg *dcbcfg)
+{
+	struct ice_dcb_ets_cfg *etscfg;
+	u8 *buf = tlv->tlvinfo;
+	u16 offset = 0;
+	int i;
+
+	etscfg = &dcbcfg->etscfg;
+
+	if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
+		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++) {
+		etscfg->prio_table[i * 2] =
+			((buf[offset] & ICE_CEE_PGID_PRIO_1_M) >>
+			 ICE_CEE_PGID_PRIO_1_S);
+		etscfg->prio_table[i * 2 + 1] =
+			((buf[offset] & ICE_CEE_PGID_PRIO_0_M) >>
+			 ICE_CEE_PGID_PRIO_0_S);
+		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 < ICE_MAX_TRAFFIC_CLASS; i++)
+		etscfg->tcbwtable[i] = buf[offset++];
+
+	/* Number of TCs supported (1 octet) */
+	etscfg->maxtcs = buf[offset];
+}
+
+/**
+ * ice_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
+ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
+			 struct ice_dcbx_cfg *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+
+	if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
+		dcbcfg->pfc.willing = 1;
+
+	/* ------------------------
+	 * | PFC Enable | PFC TCs |
+	 * ------------------------
+	 * | 1 octet    | 1 octet |
+	 */
+	dcbcfg->pfc.pfcena = buf[0];
+	dcbcfg->pfc.pfccap = buf[1];
+}
+
+/**
+ * ice_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
+ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
+{
+	u16 len, typelen, offset = 0;
+	struct ice_cee_app_prio *app;
+	u8 i;
+
+	typelen = NTOHS(tlv->hdr.typelen);
+	len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
+
+	dcbcfg->numapps = len / sizeof(*app);
+	if (!dcbcfg->numapps)
+		return;
+	if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
+		dcbcfg->numapps = ICE_DCBX_MAX_APPS;
+
+	for (i = 0; i < dcbcfg->numapps; i++) {
+		u8 up, selector;
+
+		app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
+		for (up = 0; up < ICE_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 & ICE_CEE_APP_SELECTOR_M);
+		switch (selector) {
+		case ICE_CEE_APP_SEL_ETHTYPE:
+			dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
+			break;
+		case ICE_CEE_APP_SEL_TCPIP:
+			dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
+			break;
+		default:
+			/* Keep selector as it is for unknown types */
+			dcbcfg->app[i].selector = selector;
+		}
+
+		dcbcfg->app[i].prot_id = NTOHS(app->protocol);
+		/* Move to next app */
+		offset += sizeof(*app);
+	}
+}
+
+/**
+ * ice_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
+ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
+{
+	struct ice_cee_feat_tlv *sub_tlv;
+	u8 subtype, feat_tlv_count = 0;
+	u16 len, tlvlen, typelen;
+	u32 ouisubtype;
+
+	ouisubtype = NTOHL(tlv->ouisubtype);
+	subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
+		       ICE_LLDP_TLV_SUBTYPE_S);
+	/* Return if not CEE DCBX */
+	if (subtype != ICE_CEE_DCBX_TYPE)
+		return;
+
+	typelen = NTOHS(tlv->typelen);
+	tlvlen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
+	len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
+		sizeof(struct ice_cee_ctrl_tlv);
+	/* Return if no CEE DCBX Feature TLVs */
+	if (tlvlen <= len)
+		return;
+
+	sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
+	while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
+		u16 sublen;
+
+		typelen = NTOHS(sub_tlv->hdr.typelen);
+		sublen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
+		subtype = (u8)((typelen & ICE_LLDP_TLV_TYPE_M) >>
+			       ICE_LLDP_TLV_TYPE_S);
+		switch (subtype) {
+		case ICE_CEE_SUBTYPE_PG_CFG:
+			ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
+			break;
+		case ICE_CEE_SUBTYPE_PFC_CFG:
+			ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
+			break;
+		case ICE_CEE_SUBTYPE_APP_PRI:
+			ice_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 ice_cee_feat_tlv *)
+			  ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
+			   sublen);
+	}
+}
+
+/**
+ * ice_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
+ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
+{
+	u32 ouisubtype;
+	u32 oui;
+
+	ouisubtype = NTOHL(tlv->ouisubtype);
+	oui = ((ouisubtype & ICE_LLDP_TLV_OUI_M) >> ICE_LLDP_TLV_OUI_S);
+	switch (oui) {
+	case ICE_IEEE_8021QAZ_OUI:
+		ice_parse_ieee_tlv(tlv, dcbcfg);
+		break;
+	case ICE_CEE_DCBX_OUI:
+		ice_parse_cee_tlv(tlv, dcbcfg);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * ice_lldp_to_dcb_cfg
+ * @lldpmib: LLDPDU to be parsed
+ * @dcbcfg: store for LLDPDU data
+ *
+ * Parse DCB configuration from the LLDPDU
+ */
+enum ice_status ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
+{
+	struct ice_lldp_org_tlv *tlv;
+	enum ice_status ret = ICE_SUCCESS;
+	u16 offset = 0;
+	u16 typelen;
+	u16 type;
+	u16 len;
+
+	if (!lldpmib || !dcbcfg)
+		return ICE_ERR_PARAM;
+
+	/* set to the start of LLDPDU */
+	lldpmib += ETH_HEADER_LEN;
+	tlv = (struct ice_lldp_org_tlv *)lldpmib;
+	while (1) {
+		typelen = NTOHS(tlv->typelen);
+		type = ((typelen & ICE_LLDP_TLV_TYPE_M) >> ICE_LLDP_TLV_TYPE_S);
+		len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
+		offset += sizeof(typelen) + len;
+
+		/* END TLV or beyond LLDPDU size */
+		if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
+			break;
+
+		switch (type) {
+		case ICE_TLV_TYPE_ORG:
+			ice_parse_org_tlv(tlv, dcbcfg);
+			break;
+		default:
+			break;
+		}
+
+		/* Move to next TLV */
+		tlv = (struct ice_lldp_org_tlv *)
+		      ((char *)tlv + sizeof(tlv->typelen) + len);
+	}
+
+	return ret;
+}
+
+/**
+ * ice_aq_get_dcb_cfg
+ * @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
+ */
+enum ice_status
+ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
+		   struct ice_dcbx_cfg *dcbcfg)
+{
+	enum ice_status ret;
+	u8 *lldpmib;
+
+	/* Allocate the LLDPDU */
+	lldpmib = (u8 *)ice_malloc(hw, ICE_LLDPDU_SIZE);
+	if (!lldpmib)
+		return ICE_ERR_NO_MEMORY;
+
+	ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
+				  ICE_LLDPDU_SIZE, NULL, NULL, NULL);
+
+	if (ret == ICE_SUCCESS)
+		/* Parse LLDP MIB to get dcb configuration */
+		ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
+
+	ice_free(hw, lldpmib);
+
+	return ret;
+}
+
+
+/**
+ * ice_aq_start_stop_dcbx - Start/Stop DCBx service in FW
+ * @hw: pointer to the hw struct
+ * @start_dcbx_agent: True if DCBx Agent needs to be started
+ *		      False if DCBx Agent needs to be stopped
+ * @dcbx_agent_status: FW indicates back the DCBx agent status
+ *		       True if DCBx Agent is active
+ *		       False if DCBx Agent is stopped
+ * @cd: pointer to command details structure or NULL
+ *
+ * Start/Stop the embedded dcbx Agent. In case that this wrapper function
+ * returns ICE_SUCCESS, caller will need to check if FW returns back the same
+ * value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
+ */
+enum ice_status
+ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
+		       bool *dcbx_agent_status, struct ice_sq_cd *cd)
+{
+	struct ice_aqc_lldp_stop_start_specific_agent *cmd;
+	enum ice_status status;
+	struct ice_aq_desc desc;
+	u16 opcode;
+
+	cmd = &desc.params.lldp_agent_ctrl;
+
+	opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, opcode);
+
+	if (start_dcbx_agent)
+		cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
+
+	status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+
+	*dcbx_agent_status = false;
+
+	if (status == ICE_SUCCESS &&
+	    cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
+		*dcbx_agent_status = true;
+
+	return status;
+}
+
+/**
+ * ice_aq_get_cee_dcb_cfg
+ * @hw: pointer to the hw struct
+ * @buff: response buffer that stores CEE operational configuration
+ * @cd: pointer to command details structure or NULL
+ *
+ * Get CEE DCBX mode operational configuration from firmware (0x0A07)
+ */
+enum ice_status
+ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
+		       struct ice_aqc_get_cee_dcb_cfg_resp *buff,
+		       struct ice_sq_cd *cd)
+{
+	struct ice_aq_desc desc;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
+
+	return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
+}
+
+
+/**
+ * ice_cee_to_dcb_cfg
+ * @cee_cfg: pointer to CEE configuration struct
+ * @dcbcfg: DCB configuration struct
+ *
+ * Convert CEE configuration from firmware to DCB configuration
+ */
+static void
+ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
+		   struct ice_dcbx_cfg *dcbcfg)
+{
+	u32 status, tlv_status = LE32_TO_CPU(cee_cfg->tlv_status);
+	u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift;
+	u16 app_prio = LE16_TO_CPU(cee_cfg->oper_app_prio);
+	u8 i, err, sync, oper, app_index, ice_app_sel_type;
+	u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
+	u16 ice_app_prot_id_type;
+
+	/* 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 < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
+		dcbcfg->etscfg.prio_table[i * 2] =
+			((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >>
+			 ICE_CEE_PGID_PRIO_0_S);
+		dcbcfg->etscfg.prio_table[i * 2 + 1] =
+			((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >>
+			 ICE_CEE_PGID_PRIO_1_S);
+	}
+
+	for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) {
+		dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
+
+		if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
+			/* Map it to next empty TC */
+			dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
+			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
+		} else {
+			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
+		}
+	}
+
+	/* CEE PFC data to ETS config */
+	dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
+	dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
+
+	app_index = 0;
+	for (i = 0; i < 3; i++) {
+		if (i == 0) {
+			/* FCoE APP */
+			ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
+			ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
+			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
+			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
+			ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
+			ice_app_prot_id_type = ICE_APP_PROT_ID_FCOE;
+		} else if (i == 1) {
+			/* iSCSI APP */
+			ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
+			ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
+			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
+			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
+			ice_app_sel_type = ICE_APP_SEL_TCPIP;
+			ice_app_prot_id_type = ICE_APP_PROT_ID_ISCSI;
+		} else {
+			/* FIP APP */
+			ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
+			ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
+			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
+			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
+			ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
+			ice_app_prot_id_type = ICE_APP_PROT_ID_FIP;
+		}
+
+		status = (tlv_status & ice_aqc_cee_status_mask) >>
+			 ice_aqc_cee_status_shift;
+		err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
+		sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
+		oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
+		/* Add FCoE/iSCSI/FIP APP if Error is False and
+		 * Oper/Sync is True
+		 */
+		if (!err && sync && oper) {
+			dcbcfg->app[app_index].priority =
+				(app_prio & ice_aqc_cee_app_mask) >>
+				ice_aqc_cee_app_shift;
+			dcbcfg->app[app_index].selector = ice_app_sel_type;
+			dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
+			app_index++;
+		}
+	}
+
+	dcbcfg->numapps = app_index;
+}
+
+/**
+ * ice_get_ieee_dcb_cfg
+ * @pi: port information structure
+ * @dcbx_mode: mode of DCBX (IEEE or CEE)
+ *
+ * Get IEEE or CEE mode DCB configuration from the Firmware
+ */
+STATIC enum ice_status
+ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
+{
+	struct ice_dcbx_cfg *dcbx_cfg = NULL;
+	enum ice_status ret;
+
+	if (!pi)
+		return ICE_ERR_PARAM;
+
+	if (dcbx_mode == ICE_DCBX_MODE_IEEE)
+		dcbx_cfg = &pi->local_dcbx_cfg;
+	else if (dcbx_mode == ICE_DCBX_MODE_CEE)
+		dcbx_cfg = &pi->desired_dcbx_cfg;
+
+	/* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
+	 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
+	 */
+	ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
+				 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
+	if (ret)
+		goto out;
+
+	/* Get Remote DCB Config */
+	dcbx_cfg = &pi->remote_dcbx_cfg;
+	ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
+				 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
+	/* Don't treat ENOENT as an error for Remote MIBs */
+	if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
+		ret = ICE_SUCCESS;
+
+out:
+	return ret;
+}
+
+/**
+ * ice_get_dcb_cfg
+ * @pi: port information structure
+ *
+ * Get DCB configuration from the Firmware
+ */
+enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi)
+{
+	struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
+	struct ice_dcbx_cfg *dcbx_cfg;
+	enum ice_status ret;
+
+	if (!pi)
+		return ICE_ERR_PARAM;
+
+	ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
+	if (ret == ICE_SUCCESS) {
+		/* CEE mode */
+		dcbx_cfg = &pi->local_dcbx_cfg;
+		dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_CEE;
+		dcbx_cfg->tlv_status = LE32_TO_CPU(cee_cfg.tlv_status);
+		ice_cee_to_dcb_cfg(&cee_cfg, dcbx_cfg);
+		ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
+	} else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
+		/* CEE mode not enabled try querying IEEE data */
+		dcbx_cfg = &pi->local_dcbx_cfg;
+		dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
+		ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
+	}
+
+	return ret;
+}
+
+/**
+ * ice_init_dcb
+ * @hw: pointer to the hw struct
+ *
+ * Update DCB configuration from the Firmware
+ */
+enum ice_status ice_init_dcb(struct ice_hw *hw)
+{
+	struct ice_port_info *pi;
+	enum ice_status ret = ICE_SUCCESS;
+
+	if (!hw->func_caps.common_cap.dcb)
+		return ret;
+	pi = hw->port_info;
+	pi->is_sw_lldp = true;
+
+	/* Get DCBX status */
+	pi->dcbx_status = ice_get_dcbx_status(hw);
+
+	/* Check the DCBX Status */
+	switch (pi->dcbx_status) {
+	case ICE_DCBX_STATUS_NOT_STARTED:
+		break;
+	case ICE_DCBX_STATUS_DIS:
+		/* DCBx not in usable state, stop init */
+		return ret;
+	case ICE_DCBX_STATUS_DONE:
+	case ICE_DCBX_STATUS_IN_PROGRESS:
+		/* Get current DCBX configuration */
+		ret = ice_get_dcb_cfg(pi);
+		pi->is_sw_lldp = (hw->adminq.sq_last_status == ICE_AQ_RC_EPERM);
+		if (ret)
+			return ret;
+		break;
+	case ICE_DCBX_STATUS_MULTIPLE_PEERS:
+	default:
+		break;
+	}
+
+	/* Configure the LLDP MIB change event */
+	ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
+	if (!ret)
+		pi->is_sw_lldp = false;
+
+	return ret;
+}
+
+/**
+ * ice_add_ieee_ets_common_tlv
+ * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
+ * @ets_cfg: Container for ice_dcb_ets_cfg data
+ *
+ * Populate the TLV buffer with ice_dcb_ets_cfg data
+ */
+static void
+ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
+{
+	u8 priority0, priority1;
+	u8 offset = 0;
+	int i;
+
+	/* 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 < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
+		priority0 = ets_cfg->prio_table[i * 2] & 0xF;
+		priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
+		buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
+		offset++;
+	}
+
+	/* TC Bandwidth Table (8 octets)
+	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+	 *        ---------------------------------
+	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+	 *        ---------------------------------
+	 *
+	 * 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 < ICE_MAX_TRAFFIC_CLASS; i++) {
+		buf[offset] = ets_cfg->tcbwtable[i];
+		buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
+		offset++;
+	}
+}
+
+/**
+ * ice_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
+ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
+{
+	struct ice_dcb_ets_cfg *etscfg;
+	u8 *buf = tlv->tlvinfo;
+	u8 maxtcwilling = 0;
+	u32 ouisubtype;
+	u16 typelen;
+
+	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
+		   ICE_IEEE_ETS_TLV_LEN);
+	tlv->typelen = HTONS(typelen);
+
+	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
+		      ICE_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(ICE_IEEE_ETS_WILLING_S);
+	maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
+	buf[0] = maxtcwilling;
+
+	/* Begin adding at Priority Assignment Table (offset 1 in buf) */
+	ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
+}
+
+/**
+ * ice_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
+ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
+			struct ice_dcbx_cfg *dcbcfg)
+{
+	struct ice_dcb_ets_cfg *etsrec;
+	u8 *buf = tlv->tlvinfo;
+	u32 ouisubtype;
+	u16 typelen;
+
+	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
+		   ICE_IEEE_ETS_TLV_LEN);
+	tlv->typelen = HTONS(typelen);
+
+	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
+		      ICE_IEEE_SUBTYPE_ETS_REC);
+	tlv->ouisubtype = HTONL(ouisubtype);
+
+	etsrec = &dcbcfg->etsrec;
+
+	/* First Octet is reserved */
+	/* Begin adding at Priority Assignment Table (offset 1 in buf) */
+	ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
+}
+
+/**
+ * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
+ * @tlv: Fill PFC TLV in IEEE format
+ * @dcbcfg: Local store which holds the PFC CFG data
+ *
+ * Prepare IEEE 802.1Qaz PFC CFG TLV
+ */
+static void
+ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
+{
+	u8 *buf = tlv->tlvinfo;
+	u32 ouisubtype;
+	u16 typelen;
+
+	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
+		   ICE_IEEE_PFC_TLV_LEN);
+	tlv->typelen = HTONS(typelen);
+
+	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
+		      ICE_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(ICE_IEEE_PFC_WILLING_S);
+
+	if (dcbcfg->pfc.mbc)
+		buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
+
+	buf[0] |= dcbcfg->pfc.pfccap & 0xF;
+	buf[1] = dcbcfg->pfc.pfcena;
+}
+
+/**
+ * ice_add_ieee_app_pri_tlv -  Prepare APP TLV in IEEE format
+ * @tlv: Fill APP TLV in IEEE format
+ * @dcbcfg: Local store which holds the APP CFG data
+ *
+ * Prepare IEEE 802.1Qaz APP CFG TLV
+ */
+static void
+ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
+			 struct ice_dcbx_cfg *dcbcfg)
+{
+	u16 typelen, len, 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 = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
+		      ICE_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 << ICE_IEEE_APP_PRIO_S) | selector;
+		buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
+		buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
+		/* Move to next app */
+		offset += 3;
+		i++;
+		if (i >= ICE_DCBX_MAX_APPS)
+			break;
+	}
+	/* len includes size of ouisubtype + 1 reserved + 3*numapps */
+	len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
+	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
+	tlv->typelen = HTONS(typelen);
+}
+
+/**
+ * ice_add_dcb_tlv - Add all IEEE TLVs
+ * @tlv: Fill TLV data in IEEE format
+ * @dcbcfg: Local store which holds the DCB Config
+ * @tlvid: Type of IEEE TLV
+ *
+ * Add tlv information
+ */
+static void
+ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
+		u16 tlvid)
+{
+	switch (tlvid) {
+	case ICE_IEEE_TLV_ID_ETS_CFG:
+		ice_add_ieee_ets_tlv(tlv, dcbcfg);
+		break;
+	case ICE_IEEE_TLV_ID_ETS_REC:
+		ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
+		break;
+	case ICE_IEEE_TLV_ID_PFC_CFG:
+		ice_add_ieee_pfc_tlv(tlv, dcbcfg);
+		break;
+	case ICE_IEEE_TLV_ID_APP_PRI:
+		ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
+ * @lldpmib: pointer to the hw struct
+ * @miblen: length of LLDP mib
+ * @dcbcfg: Local store which holds the DCB Config
+ *
+ * Convert the DCB configuration to MIB format
+ */
+void ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
+{
+	u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
+	struct ice_lldp_org_tlv *tlv;
+	u16 typelen;
+
+	tlv = (struct ice_lldp_org_tlv *)lldpmib;
+	while (1) {
+		ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
+		typelen = NTOHS(tlv->typelen);
+		len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
+		if (len)
+			offset += len + 2;
+		/* END TLV or beyond LLDPDU size */
+		if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
+		    offset > ICE_LLDPDU_SIZE)
+			break;
+		/* Move to next TLV */
+		if (len)
+			tlv = (struct ice_lldp_org_tlv *)
+				((char *)tlv + sizeof(tlv->typelen) + len);
+	}
+	*miblen = offset;
+}
+
+/**
+ * ice_set_dcb_cfg - Set the local LLDP MIB to FW
+ * @pi: port information structure
+ *
+ * Set DCB configuration to the Firmware
+ */
+enum ice_status ice_set_dcb_cfg(struct ice_port_info *pi)
+{
+	u8 mib_type, *lldpmib = NULL;
+	struct ice_dcbx_cfg *dcbcfg;
+	enum ice_status ret;
+	struct ice_hw *hw;
+	u16 miblen;
+
+	if (!pi)
+		return ICE_ERR_PARAM;
+
+	hw = pi->hw;
+
+	/* update the hw local config */
+	dcbcfg = &pi->local_dcbx_cfg;
+	/* Allocate the LLDPDU */
+	lldpmib = (u8 *)ice_malloc(hw, ICE_LLDPDU_SIZE);
+	if (!lldpmib)
+		return ICE_ERR_NO_MEMORY;
+
+	mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
+	if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
+		mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
+
+	ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
+	ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
+				  NULL);
+
+	ice_free(hw, lldpmib);
+
+	return ret;
+}
+
+/**
+ * ice_aq_query_cfg_port_ets - query or config port ets configuration
+ * @pi: port information structure
+ * @buf: pointer to buffer
+ * @buf_size: buffer size in bytes
+ * @cd: pointer to command details structure or NULL
+ * @opcode: query or config port ets
+ *
+ * query current or config port ets configuration
+ */
+enum ice_status
+ice_aq_query_cfg_port_ets(struct ice_port_info *pi,
+			  struct ice_aqc_port_ets_elem *buf, u16 buf_size,
+			  struct ice_sq_cd *cd, enum ice_adminq_opc opcode)
+{
+	struct ice_aqc_cfg_query_port_ets *cmd;
+	struct ice_aq_desc desc;
+	enum ice_status status;
+
+	if (!pi)
+		return ICE_ERR_PARAM;
+	cmd = &desc.params.port_ets;
+	ice_fill_dflt_direct_cmd_desc(&desc, opcode);
+	cmd->port_teid = pi->root->info.node_teid;
+
+	if (opcode == ice_aqc_opc_cfg_port_ets)
+		desc.flags |= CPU_TO_LE16(ICE_AQ_FLAG_RD);
+
+	status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
+	return status;
+}
+
+/**
+ * ice_update_port_tc_tree_cfg - update tc tree configuration
+ * @pi: port information structure
+ * @buf: pointer to buffer
+ *
+ * update the SW DB with the new TC changes
+ */
+enum ice_status
+ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
+			    struct ice_aqc_port_ets_elem *buf)
+{
+	struct ice_sched_node *node, *tc_node;
+	struct ice_aqc_get_elem elem;
+	enum ice_status status = ICE_SUCCESS;
+	u32 teid1, teid2;
+	u8 i, j;
+
+	if (!pi)
+		return ICE_ERR_PARAM;
+	/* suspend the missing TC nodes */
+	for (i = 0; i < pi->root->num_children; i++) {
+		teid1 = LE32_TO_CPU(pi->root->children[i]->info.node_teid);
+		for (j = 0; j < ICE_MAX_TRAFFIC_CLASS; j++) {
+			teid2 = LE32_TO_CPU(buf->tc_node_teid[j]);
+			if (teid1 == teid2)
+				break;
+		}
+		if (j < ICE_MAX_TRAFFIC_CLASS)
+			continue;
+		/* TC is missing */
+		pi->root->children[i]->in_use = false;
+	}
+	/* add the new TC nodes */
+	for (j = 0; j < ICE_MAX_TRAFFIC_CLASS; j++) {
+		teid2 = LE32_TO_CPU(buf->tc_node_teid[j]);
+		if (teid2 == ICE_INVAL_TEID)
+			continue;
+		/* Is it already present in the tree ? */
+		for (i = 0; i < pi->root->num_children; i++) {
+			tc_node = pi->root->children[i];
+			if (!tc_node)
+				continue;
+			teid1 = LE32_TO_CPU(tc_node->info.node_teid);
+			if (teid1 == teid2) {
+				tc_node->tc_num = j;
+				tc_node->in_use = true;
+				break;
+			}
+		}
+		if (i < pi->root->num_children)
+			continue;
+		/* new TC */
+		status = ice_sched_query_elem(pi->hw, teid2, &elem);
+		if (!status)
+			status = ice_sched_add_node(pi, 1, &elem.generic[0]);
+		if (status)
+			break;
+		/* update the TC number */
+		node = ice_sched_find_node_by_teid(pi->root, teid2);
+		if (node)
+			node->tc_num = j;
+	}
+	return status;
+}
+
+/**
+ * ice_query_cfg_port_ets - query or config port ets configuration
+ * @pi: port information structure
+ * @buf: pointer to buffer
+ * @buf_size: buffer size in bytes
+ * @cd: pointer to command details structure or NULL
+ * @config: true - config port ets, false - query port ets
+ *
+ * query current/config port ets configuration and update the
+ * SW DB with the TC changes
+ */
+enum ice_status
+ice_query_cfg_port_ets(struct ice_port_info *pi,
+		       struct ice_aqc_port_ets_elem *buf, u16 buf_size,
+		       struct ice_sq_cd *cd, bool config)
+{
+	enum ice_adminq_opc opcode;
+	enum ice_status status;
+
+	opcode = config ? ice_aqc_opc_cfg_port_ets : ice_aqc_opc_query_port_ets;
+	ice_acquire_lock(&pi->sched_lock);
+	status = ice_aq_query_cfg_port_ets(pi, buf, buf_size, cd, opcode);
+	if (!status)
+		status = ice_update_port_tc_tree_cfg(pi, buf);
+	ice_release_lock(&pi->sched_lock);
+	return status;
+}
diff --git a/drivers/net/ice/base/ice_dcb.h b/drivers/net/ice/base/ice_dcb.h
new file mode 100644
index 0000000..b0e5a5f
--- /dev/null
+++ b/drivers/net/ice/base/ice_dcb.h
@@ -0,0 +1,220 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2001-2018
+ */
+
+#ifndef _ICE_DCB_H_
+#define _ICE_DCB_H_
+
+#include "ice_type.h"
+
+#define ICE_DCBX_OFFLOAD_DIS		0
+#define ICE_DCBX_OFFLOAD_ENABLED	1
+
+#define ICE_DCBX_STATUS_NOT_STARTED	0
+#define ICE_DCBX_STATUS_IN_PROGRESS	1
+#define ICE_DCBX_STATUS_DONE		2
+#define ICE_DCBX_STATUS_MULTIPLE_PEERS	3
+#define ICE_DCBX_STATUS_DIS		7
+
+#define ICE_TLV_TYPE_END		0
+#define ICE_TLV_TYPE_ORG		127
+
+#define ICE_IEEE_8021QAZ_OUI		0x0080C2
+#define ICE_IEEE_SUBTYPE_ETS_CFG	9
+#define ICE_IEEE_SUBTYPE_ETS_REC	10
+#define ICE_IEEE_SUBTYPE_PFC_CFG	11
+#define ICE_IEEE_SUBTYPE_APP_PRI	12
+
+#define ICE_CEE_DCBX_OUI		0x001B21
+#define ICE_CEE_DCBX_TYPE		2
+
+#define ICE_CEE_SUBTYPE_CTRL		1
+#define ICE_CEE_SUBTYPE_PG_CFG		2
+#define ICE_CEE_SUBTYPE_PFC_CFG		3
+#define ICE_CEE_SUBTYPE_APP_PRI		4
+
+#define ICE_CEE_MAX_FEAT_TYPE		3
+#define ICE_LLDP_ADMINSTATUS_DIS	0
+#define ICE_LLDP_ADMINSTATUS_ENA_RX	1
+#define ICE_LLDP_ADMINSTATUS_ENA_TX	2
+#define ICE_LLDP_ADMINSTATUS_ENA_RXTX	3
+
+/* Defines for LLDP TLV header */
+#define ICE_LLDP_TLV_LEN_S		0
+#define ICE_LLDP_TLV_LEN_M		(0x01FF << ICE_LLDP_TLV_LEN_S)
+#define ICE_LLDP_TLV_TYPE_S		9
+#define ICE_LLDP_TLV_TYPE_M		(0x7F << ICE_LLDP_TLV_TYPE_S)
+#define ICE_LLDP_TLV_SUBTYPE_S		0
+#define ICE_LLDP_TLV_SUBTYPE_M		(0xFF << ICE_LLDP_TLV_SUBTYPE_S)
+#define ICE_LLDP_TLV_OUI_S		8
+#define ICE_LLDP_TLV_OUI_M		(0xFFFFFFUL << ICE_LLDP_TLV_OUI_S)
+
+/* Defines for IEEE ETS TLV */
+#define ICE_IEEE_ETS_MAXTC_S	0
+#define ICE_IEEE_ETS_MAXTC_M		(0x7 << ICE_IEEE_ETS_MAXTC_S)
+#define ICE_IEEE_ETS_CBS_S		6
+#define ICE_IEEE_ETS_CBS_M		BIT(ICE_IEEE_ETS_CBS_S)
+#define ICE_IEEE_ETS_WILLING_S		7
+#define ICE_IEEE_ETS_WILLING_M		BIT(ICE_IEEE_ETS_WILLING_S)
+#define ICE_IEEE_ETS_PRIO_0_S		0
+#define ICE_IEEE_ETS_PRIO_0_M		(0x7 << ICE_IEEE_ETS_PRIO_0_S)
+#define ICE_IEEE_ETS_PRIO_1_S		4
+#define ICE_IEEE_ETS_PRIO_1_M		(0x7 << ICE_IEEE_ETS_PRIO_1_S)
+#define ICE_CEE_PGID_PRIO_0_S		0
+#define ICE_CEE_PGID_PRIO_0_M		(0xF << ICE_CEE_PGID_PRIO_0_S)
+#define ICE_CEE_PGID_PRIO_1_S		4
+#define ICE_CEE_PGID_PRIO_1_M		(0xF << ICE_CEE_PGID_PRIO_1_S)
+#define ICE_CEE_PGID_STRICT		15
+
+/* Defines for IEEE TSA types */
+#define ICE_IEEE_TSA_STRICT		0
+#define ICE_IEEE_TSA_CBS		1
+#define ICE_IEEE_TSA_ETS		2
+#define ICE_IEEE_TSA_VENDOR		255
+
+/* Defines for IEEE PFC TLV */
+#define ICE_IEEE_PFC_CAP_S		0
+#define ICE_IEEE_PFC_CAP_M		(0xF << ICE_IEEE_PFC_CAP_S)
+#define ICE_IEEE_PFC_MBC_S		6
+#define ICE_IEEE_PFC_MBC_M		BIT(ICE_IEEE_PFC_MBC_S)
+#define ICE_IEEE_PFC_WILLING_S		7
+#define ICE_IEEE_PFC_WILLING_M		BIT(ICE_IEEE_PFC_WILLING_S)
+
+/* Defines for IEEE APP TLV */
+#define ICE_IEEE_APP_SEL_S		0
+#define ICE_IEEE_APP_SEL_M		(0x7 << ICE_IEEE_APP_SEL_S)
+#define ICE_IEEE_APP_PRIO_S		5
+#define ICE_IEEE_APP_PRIO_M		(0x7 << ICE_IEEE_APP_PRIO_S)
+
+/* TLV definitions for preparing MIB */
+#define ICE_TLV_ID_CHASSIS_ID		0
+#define ICE_TLV_ID_PORT_ID		1
+#define ICE_TLV_ID_TIME_TO_LIVE		2
+#define ICE_IEEE_TLV_ID_ETS_CFG		3
+#define ICE_IEEE_TLV_ID_ETS_REC		4
+#define ICE_IEEE_TLV_ID_PFC_CFG		5
+#define ICE_IEEE_TLV_ID_APP_PRI		6
+#define ICE_TLV_ID_END_OF_LLDPPDU	7
+#define ICE_TLV_ID_START		ICE_IEEE_TLV_ID_ETS_CFG
+
+#define ICE_IEEE_ETS_TLV_LEN		25
+#define ICE_IEEE_PFC_TLV_LEN		6
+#define ICE_IEEE_APP_TLV_LEN		11
+
+#pragma pack(1)
+/* IEEE 802.1AB LLDP TLV structure */
+struct ice_lldp_generic_tlv {
+	__be16 typelen;
+	u8 tlvinfo[1];
+};
+
+/* IEEE 802.1AB LLDP Organization specific TLV */
+struct ice_lldp_org_tlv {
+	__be16 typelen;
+	__be32 ouisubtype;
+	u8 tlvinfo[1];
+};
+#pragma pack()
+
+struct ice_cee_tlv_hdr {
+	__be16 typelen;
+	u8 operver;
+	u8 maxver;
+};
+
+struct ice_cee_ctrl_tlv {
+	struct ice_cee_tlv_hdr hdr;
+	__be32 seqno;
+	__be32 ackno;
+};
+
+struct ice_cee_feat_tlv {
+	struct ice_cee_tlv_hdr hdr;
+	u8 en_will_err; /* Bits: |En|Will|Err|Reserved(5)| */
+#define ICE_CEE_FEAT_TLV_ENA_M		0x80
+#define ICE_CEE_FEAT_TLV_WILLING_M	0x40
+#define ICE_CEE_FEAT_TLV_ERR_M		0x20
+	u8 subtype;
+	u8 tlvinfo[1];
+};
+
+#pragma pack(1)
+struct ice_cee_app_prio {
+	__be16 protocol;
+	u8 upper_oui_sel; /* Bits: |Upper OUI(6)|Selector(2)| */
+#define ICE_CEE_APP_SELECTOR_M	0x03
+	__be16 lower_oui;
+	u8 prio_map;
+};
+#pragma pack()
+
+/* TODO: The below structures related LLDP/DCBX variables
+ * and statistics are defined but need to find how to get
+ * the required information from the Firmware to use them
+ */
+
+/* IEEE 802.1AB LLDP Agent Statistics */
+struct ice_lldp_stats {
+	u64 remtablelastchangetime;
+	u64 remtableinserts;
+	u64 remtabledeletes;
+	u64 remtabledrops;
+	u64 remtableageouts;
+	u64 txframestotal;
+	u64 rxframesdiscarded;
+	u64 rxportframeerrors;
+	u64 rxportframestotal;
+	u64 rxporttlvsdiscardedtotal;
+	u64 rxporttlvsunrecognizedtotal;
+	u64 remtoomanyneighbors;
+};
+
+/* IEEE 802.1Qaz DCBX variables */
+struct ice_dcbx_variables {
+	u32 defmaxtrafficclasses;
+	u32 defprioritytcmapping;
+	u32 deftcbandwidth;
+	u32 deftsaassignment;
+};
+
+
+enum ice_status
+ice_aq_get_lldp_mib(struct ice_hw *hw, u8 bridge_type, u8 mib_type, void *buf,
+		    u16 buf_size, u16 *local_len, u16 *remote_len,
+		    struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update,
+			   struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_start_lldp(struct ice_hw *hw, struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_set_lldp_mib(struct ice_hw *hw, u8 mib_type, void *buf, u16 buf_size,
+		    struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
+		       struct ice_aqc_get_cee_dcb_cfg_resp *buff,
+		       struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
+		       bool *dcbx_agent_status, struct ice_sq_cd *cd);
+u8 ice_get_dcbx_status(struct ice_hw *hw);
+enum ice_status ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg);
+enum ice_status
+ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
+		   struct ice_dcbx_cfg *dcbcfg);
+enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi);
+enum ice_status ice_init_dcb(struct ice_hw *hw);
+enum ice_status ice_set_dcb_cfg(struct ice_port_info *pi);
+void ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg);
+enum ice_status
+ice_query_cfg_port_ets(struct ice_port_info *pi,
+		       struct ice_aqc_port_ets_elem *buff, u16 buf_size,
+		       struct ice_sq_cd *cmd_details, bool config);
+enum ice_status
+ice_aq_query_cfg_port_ets(struct ice_port_info *pi,
+			  struct ice_aqc_port_ets_elem *buf, u16 buf_size,
+			  struct ice_sq_cd *cd, enum ice_adminq_opc opcode);
+enum ice_status
+ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
+			    struct ice_aqc_port_ets_elem *buf);
+#endif /* _ICE_DCB_H_ */
-- 
1.9.3