root/drivers/net/ethernet/intel/ice/ice_dcb.h
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2019, Intel Corporation. */

#ifndef _ICE_DCB_H_
#define _ICE_DCB_H_

#include "ice_type.h"
#include <scsi/iscsi_proto.h>

#define ICE_DCBX_STATUS_NOT_STARTED     0
#define ICE_DCBX_STATUS_IN_PROGRESS     1
#define ICE_DCBX_STATUS_DONE            2
#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_DSCP_OUI                    0xFFFFFF
#define ICE_DSCP_SUBTYPE_DSCP2UP        0x41
#define ICE_DSCP_SUBTYPE_ENFORCE        0x42
#define ICE_DSCP_SUBTYPE_TCBW           0x43
#define ICE_DSCP_SUBTYPE_PFC            0x44
#define ICE_DSCP_IPV6_OFFSET            80

#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
/* 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_ETS                2

/* 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_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_TLV_ID_DSCP_UP              3
#define ICE_TLV_ID_DSCP_ENF             4
#define ICE_TLV_ID_DSCP_TC_BW           5
#define ICE_TLV_ID_DSCP_TO_PFC          6

#define ICE_IEEE_ETS_TLV_LEN            25
#define ICE_IEEE_PFC_TLV_LEN            6
#define ICE_IEEE_APP_TLV_LEN            11

#define ICE_DSCP_UP_TLV_LEN             148
#define ICE_DSCP_ENF_TLV_LEN            132
#define ICE_DSCP_TC_BW_TLV_LEN          25
#define ICE_DSCP_PFC_TLV_LEN            6

/* IEEE 802.1AB LLDP Organization specific TLV */
struct ice_lldp_org_tlv {
        __be16 typelen;
        __be32 ouisubtype;
        u8 tlvinfo[];
} __packed;

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[];
};

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;
} __packed;

int ice_aq_set_pfc_mode(struct ice_hw *hw, u8 pfc_mode, struct ice_sq_cd *cd);
int
ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
                   struct ice_dcbx_cfg *dcbcfg);
int ice_get_dcb_cfg(struct ice_port_info *pi);
int ice_set_dcb_cfg(struct ice_port_info *pi);
void ice_get_dcb_cfg_from_mib_change(struct ice_port_info *pi,
                                     struct ice_rq_event_info *event);
int ice_init_dcb(struct ice_hw *hw, bool enable_mib_change);
int
ice_query_port_ets(struct ice_port_info *pi,
                   struct ice_aqc_port_ets_elem *buf, u16 buf_size,
                   struct ice_sq_cd *cmd_details);
#ifdef CONFIG_DCB
int
ice_aq_stop_lldp(struct ice_hw *hw, bool shutdown_lldp_agent, bool persist,
                 struct ice_sq_cd *cd);
int ice_aq_start_lldp(struct ice_hw *hw, bool persist, struct ice_sq_cd *cd);
int
ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
                       bool *dcbx_agent_status, struct ice_sq_cd *cd);
int ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib);
#else /* CONFIG_DCB */
static inline int
ice_aq_stop_lldp(struct ice_hw __always_unused *hw,
                 bool __always_unused shutdown_lldp_agent,
                 bool __always_unused persist,
                 struct ice_sq_cd __always_unused *cd)
{
        return 0;
}

static inline int
ice_aq_start_lldp(struct ice_hw __always_unused *hw,
                  bool __always_unused persist,
                  struct ice_sq_cd __always_unused *cd)
{
        return 0;
}

static inline int
ice_aq_start_stop_dcbx(struct ice_hw __always_unused *hw,
                       bool __always_unused start_dcbx_agent,
                       bool *dcbx_agent_status,
                       struct ice_sq_cd __always_unused *cd)
{
        *dcbx_agent_status = false;

        return 0;
}

static inline int
ice_cfg_lldp_mib_change(struct ice_hw __always_unused *hw,
                        bool __always_unused ena_mib)
{
        return 0;
}

#endif /* CONFIG_DCB */
#endif /* _ICE_DCB_H_ */