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linux_dsm_epyc7002/include/uapi/linux/dcbnl.h
Huy Nguyen e549f6f9c0 net/dcb: Add dcbnl buffer attribute 
In this patch, we add dcbnl buffer attribute to allow user
change the NIC's buffer configuration such as priority
to buffer mapping and buffer size of individual buffer.

This attribute combined with pfc attribute allows advanced user to
fine tune the qos setting for specific priority queue. For example,
user can give dedicated buffer for one or more priorities or user
can give large buffer to certain priorities.

The dcb buffer configuration will be controlled by lldptool.
lldptool -T -i eth2 -V BUFFER prio 0,2,5,7,1,2,3,6
  maps priorities 0,1,2,3,4,5,6,7 to receive buffer 0,2,5,7,1,2,3,6
lldptool -T -i eth2 -V BUFFER size 87296,87296,0,87296,0,0,0,0
  sets receive buffer size for buffer 0,1,2,3,4,5,6,7 respectively

After discussion on mailing list with Jakub, Jiri, Ido and John, we agreed to
choose dcbnl over devlink interface since this feature is intended to set
port attributes which are governed by the netdev instance of that port, where
devlink API is more suitable for global ASIC configurations.

We present an use case scenario where dcbnl buffer attribute configured
by advance user helps reduce the latency of messages of different sizes.

Scenarios description:
On ConnectX-5, we run latency sensitive traffic with
small/medium message sizes ranging from 64B to 256KB and bandwidth sensitive
traffic with large messages sizes 512KB and 1MB. We group small, medium,
and large message sizes to their own pfc enables priorities as follow.
  Priorities 1 & 2 (64B, 256B and 1KB)
  Priorities 3 & 4 (4KB, 8KB, 16KB, 64KB, 128KB and 256KB)
  Priorities 5 & 6 (512KB and 1MB)

By default, ConnectX-5 maps all pfc enabled priorities to a single
lossless fixed buffer size of 50% of total available buffer space. The
other 50% is assigned to lossy buffer. Using dcbnl buffer attribute,
we create three equal size lossless buffers. Each buffer has 25% of total
available buffer space. Thus, the lossy buffer size reduces to 25%. Priority
to lossless  buffer mappings are set as follow.
  Priorities 1 & 2 on lossless buffer #1
  Priorities 3 & 4 on lossless buffer #2
  Priorities 5 & 6 on lossless buffer #3

We observe improvements in latency for small and medium message sizes
as follows. Please note that the large message sizes bandwidth performance is
reduced but the total bandwidth remains the same.
  256B message size (42 % latency reduction)
  4K message size (21% latency reduction)
  64K message size (16% latency reduction)

CC: Ido Schimmel <idosch@idosch.org>
CC: Jakub Kicinski <jakub.kicinski@netronome.com>
CC: Jiri Pirko <jiri@resnulli.us>
CC: Or Gerlitz <gerlitz.or@gmail.com>
CC: Parav Pandit <parav@mellanox.com>
CC: Aron Silverton <aron.silverton@oracle.com>
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-05-24 14:22:59 -07:00

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Copyright (c) 2008-2011, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*
* Author: Lucy Liu <lucy.liu@intel.com>
*/
#ifndef __LINUX_DCBNL_H__
#define __LINUX_DCBNL_H__
#include <linux/types.h>
/* IEEE 802.1Qaz std supported values */
#define IEEE_8021QAZ_MAX_TCS 8
#define IEEE_8021QAZ_TSA_STRICT 0
#define IEEE_8021QAZ_TSA_CB_SHAPER 1
#define IEEE_8021QAZ_TSA_ETS 2
#define IEEE_8021QAZ_TSA_VENDOR 255
/* This structure contains the IEEE 802.1Qaz ETS managed object
*
* @willing: willing bit in ETS configuration TLV
* @ets_cap: indicates supported capacity of ets feature
* @cbs: credit based shaper ets algorithm supported
* @tc_tx_bw: tc tx bandwidth indexed by traffic class
* @tc_rx_bw: tc rx bandwidth indexed by traffic class
* @tc_tsa: TSA Assignment table, indexed by traffic class
* @prio_tc: priority assignment table mapping 8021Qp to traffic class
* @tc_reco_bw: recommended tc bandwidth indexed by traffic class for TLV
* @tc_reco_tsa: recommended tc bandwidth indexed by traffic class for TLV
* @reco_prio_tc: recommended tc tx bandwidth indexed by traffic class for TLV
*
* Recommended values are used to set fields in the ETS recommendation TLV
* with hardware offloaded LLDP.
*
* ----
* TSA Assignment 8 bit identifiers
* 0 strict priority
* 1 credit-based shaper
* 2 enhanced transmission selection
* 3-254 reserved
* 255 vendor specific
*/
struct ieee_ets {
__u8 willing;
__u8 ets_cap;
__u8 cbs;
__u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS];
__u8 tc_rx_bw[IEEE_8021QAZ_MAX_TCS];
__u8 tc_tsa[IEEE_8021QAZ_MAX_TCS];
__u8 prio_tc[IEEE_8021QAZ_MAX_TCS];
__u8 tc_reco_bw[IEEE_8021QAZ_MAX_TCS];
__u8 tc_reco_tsa[IEEE_8021QAZ_MAX_TCS];
__u8 reco_prio_tc[IEEE_8021QAZ_MAX_TCS];
};
/* This structure contains rate limit extension to the IEEE 802.1Qaz ETS
* managed object.
* Values are 64 bits long and specified in Kbps to enable usage over both
* slow and very fast networks.
*
* @tc_maxrate: maximal tc tx bandwidth indexed by traffic class
*/
struct ieee_maxrate {
__u64 tc_maxrate[IEEE_8021QAZ_MAX_TCS];
};
enum dcbnl_cndd_states {
DCB_CNDD_RESET = 0,
DCB_CNDD_EDGE,
DCB_CNDD_INTERIOR,
DCB_CNDD_INTERIOR_READY,
};
/* This structure contains the IEEE 802.1Qau QCN managed object.
*
*@rpg_enable: enable QCN RP
*@rppp_max_rps: maximum number of RPs allowed for this CNPV on this port
*@rpg_time_reset: time between rate increases if no CNMs received.
* given in u-seconds
*@rpg_byte_reset: transmitted data between rate increases if no CNMs received.
* given in Bytes
*@rpg_threshold: The number of times rpByteStage or rpTimeStage can count
* before RP rate control state machine advances states
*@rpg_max_rate: the maxinun rate, in Mbits per second,
* at which an RP can transmit
*@rpg_ai_rate: The rate, in Mbits per second,
* used to increase rpTargetRate in the RPR_ACTIVE_INCREASE
*@rpg_hai_rate: The rate, in Mbits per second,
* used to increase rpTargetRate in the RPR_HYPER_INCREASE state
*@rpg_gd: Upon CNM receive, flow rate is limited to (Fb/Gd)*CurrentRate.
* rpgGd is given as log2(Gd), where Gd may only be powers of 2
*@rpg_min_dec_fac: The minimum factor by which the current transmit rate
* can be changed by reception of a CNM.
* value is given as percentage (1-100)
*@rpg_min_rate: The minimum value, in bits per second, for rate to limit
*@cndd_state_machine: The state of the congestion notification domain
* defense state machine, as defined by IEEE 802.3Qau
* section 32.1.1. In the interior ready state,
* the QCN capable hardware may add CN-TAG TLV to the
* outgoing traffic, to specifically identify outgoing
* flows.
*/
struct ieee_qcn {
__u8 rpg_enable[IEEE_8021QAZ_MAX_TCS];
__u32 rppp_max_rps[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_time_reset[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_byte_reset[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_threshold[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_max_rate[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_ai_rate[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_hai_rate[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_gd[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_min_dec_fac[IEEE_8021QAZ_MAX_TCS];
__u32 rpg_min_rate[IEEE_8021QAZ_MAX_TCS];
__u32 cndd_state_machine[IEEE_8021QAZ_MAX_TCS];
};
/* This structure contains the IEEE 802.1Qau QCN statistics.
*
*@rppp_rp_centiseconds: the number of RP-centiseconds accumulated
* by RPs at this priority level on this Port
*@rppp_created_rps: number of active RPs(flows) that react to CNMs
*/
struct ieee_qcn_stats {
__u64 rppp_rp_centiseconds[IEEE_8021QAZ_MAX_TCS];
__u32 rppp_created_rps[IEEE_8021QAZ_MAX_TCS];
};
/* This structure contains the IEEE 802.1Qaz PFC managed object
*
* @pfc_cap: Indicates the number of traffic classes on the local device
* that may simultaneously have PFC enabled.
* @pfc_en: bitmap indicating pfc enabled traffic classes
* @mbc: enable macsec bypass capability
* @delay: the allowance made for a round-trip propagation delay of the
* link in bits.
* @requests: count of the sent pfc frames
* @indications: count of the received pfc frames
*/
struct ieee_pfc {
__u8 pfc_cap;
__u8 pfc_en;
__u8 mbc;
__u16 delay;
__u64 requests[IEEE_8021QAZ_MAX_TCS];
__u64 indications[IEEE_8021QAZ_MAX_TCS];
};
#define IEEE_8021Q_MAX_PRIORITIES 8
#define DCBX_MAX_BUFFERS 8
struct dcbnl_buffer {
/* priority to buffer mapping */
__u8 prio2buffer[IEEE_8021Q_MAX_PRIORITIES];
/* buffer size in Bytes */
__u32 buffer_size[DCBX_MAX_BUFFERS];
__u32 total_size;
};
/* CEE DCBX std supported values */
#define CEE_DCBX_MAX_PGS 8
#define CEE_DCBX_MAX_PRIO 8
/**
* struct cee_pg - CEE Priority-Group managed object
*
* @willing: willing bit in the PG tlv
* @error: error bit in the PG tlv
* @pg_en: enable bit of the PG feature
* @tcs_supported: number of traffic classes supported
* @pg_bw: bandwidth percentage for each priority group
* @prio_pg: priority to PG mapping indexed by priority
*/
struct cee_pg {
__u8 willing;
__u8 error;
__u8 pg_en;
__u8 tcs_supported;
__u8 pg_bw[CEE_DCBX_MAX_PGS];
__u8 prio_pg[CEE_DCBX_MAX_PGS];
};
/**
* struct cee_pfc - CEE PFC managed object
*
* @willing: willing bit in the PFC tlv
* @error: error bit in the PFC tlv
* @pfc_en: bitmap indicating pfc enabled traffic classes
* @tcs_supported: number of traffic classes supported
*/
struct cee_pfc {
__u8 willing;
__u8 error;
__u8 pfc_en;
__u8 tcs_supported;
};
/* IEEE 802.1Qaz std supported values */
#define IEEE_8021QAZ_APP_SEL_ETHERTYPE 1
#define IEEE_8021QAZ_APP_SEL_STREAM 2
#define IEEE_8021QAZ_APP_SEL_DGRAM 3
#define IEEE_8021QAZ_APP_SEL_ANY 4
#define IEEE_8021QAZ_APP_SEL_DSCP 5
/* This structure contains the IEEE 802.1Qaz APP managed object. This
* object is also used for the CEE std as well.
*
* @selector: protocol identifier type
* @protocol: protocol of type indicated
* @priority: 3-bit unsigned integer indicating priority for IEEE
* 8-bit 802.1p user priority bitmap for CEE
*
* ----
* Selector field values for IEEE 802.1Qaz
* 0 Reserved
* 1 Ethertype
* 2 Well known port number over TCP or SCTP
* 3 Well known port number over UDP or DCCP
* 4 Well known port number over TCP, SCTP, UDP, or DCCP
* 5-7 Reserved
*
* Selector field values for CEE
* 0 Ethertype
* 1 Well known port number over TCP or UDP
* 2-3 Reserved
*/
struct dcb_app {
__u8 selector;
__u8 priority;
__u16 protocol;
};
/**
* struct dcb_peer_app_info - APP feature information sent by the peer
*
* @willing: willing bit in the peer APP tlv
* @error: error bit in the peer APP tlv
*
* In addition to this information the full peer APP tlv also contains
* a table of 'app_count' APP objects defined above.
*/
struct dcb_peer_app_info {
__u8 willing;
__u8 error;
};
struct dcbmsg {
__u8 dcb_family;
__u8 cmd;
__u16 dcb_pad;
};
/**
* enum dcbnl_commands - supported DCB commands
*
* @DCB_CMD_UNDEFINED: unspecified command to catch errors
* @DCB_CMD_GSTATE: request the state of DCB in the device
* @DCB_CMD_SSTATE: set the state of DCB in the device
* @DCB_CMD_PGTX_GCFG: request the priority group configuration for Tx
* @DCB_CMD_PGTX_SCFG: set the priority group configuration for Tx
* @DCB_CMD_PGRX_GCFG: request the priority group configuration for Rx
* @DCB_CMD_PGRX_SCFG: set the priority group configuration for Rx
* @DCB_CMD_PFC_GCFG: request the priority flow control configuration
* @DCB_CMD_PFC_SCFG: set the priority flow control configuration
* @DCB_CMD_SET_ALL: apply all changes to the underlying device
* @DCB_CMD_GPERM_HWADDR: get the permanent MAC address of the underlying
* device. Only useful when using bonding.
* @DCB_CMD_GCAP: request the DCB capabilities of the device
* @DCB_CMD_GNUMTCS: get the number of traffic classes currently supported
* @DCB_CMD_SNUMTCS: set the number of traffic classes
* @DCB_CMD_GBCN: set backward congestion notification configuration
* @DCB_CMD_SBCN: get backward congestion notification configration.
* @DCB_CMD_GAPP: get application protocol configuration
* @DCB_CMD_SAPP: set application protocol configuration
* @DCB_CMD_IEEE_SET: set IEEE 802.1Qaz configuration
* @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration
* @DCB_CMD_GDCBX: get DCBX engine configuration
* @DCB_CMD_SDCBX: set DCBX engine configuration
* @DCB_CMD_GFEATCFG: get DCBX features flags
* @DCB_CMD_SFEATCFG: set DCBX features negotiation flags
* @DCB_CMD_CEE_GET: get CEE aggregated configuration
* @DCB_CMD_IEEE_DEL: delete IEEE 802.1Qaz configuration
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
DCB_CMD_GSTATE,
DCB_CMD_SSTATE,
DCB_CMD_PGTX_GCFG,
DCB_CMD_PGTX_SCFG,
DCB_CMD_PGRX_GCFG,
DCB_CMD_PGRX_SCFG,
DCB_CMD_PFC_GCFG,
DCB_CMD_PFC_SCFG,
DCB_CMD_SET_ALL,
DCB_CMD_GPERM_HWADDR,
DCB_CMD_GCAP,
DCB_CMD_GNUMTCS,
DCB_CMD_SNUMTCS,
DCB_CMD_PFC_GSTATE,
DCB_CMD_PFC_SSTATE,
DCB_CMD_BCN_GCFG,
DCB_CMD_BCN_SCFG,
DCB_CMD_GAPP,
DCB_CMD_SAPP,
DCB_CMD_IEEE_SET,
DCB_CMD_IEEE_GET,
DCB_CMD_GDCBX,
DCB_CMD_SDCBX,
DCB_CMD_GFEATCFG,
DCB_CMD_SFEATCFG,
DCB_CMD_CEE_GET,
DCB_CMD_IEEE_DEL,
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
};
/**
* enum dcbnl_attrs - DCB top-level netlink attributes
*
* @DCB_ATTR_UNDEFINED: unspecified attribute to catch errors
* @DCB_ATTR_IFNAME: interface name of the underlying device (NLA_STRING)
* @DCB_ATTR_STATE: enable state of DCB in the device (NLA_U8)
* @DCB_ATTR_PFC_STATE: enable state of PFC in the device (NLA_U8)
* @DCB_ATTR_PFC_CFG: priority flow control configuration (NLA_NESTED)
* @DCB_ATTR_NUM_TC: number of traffic classes supported in the device (NLA_U8)
* @DCB_ATTR_PG_CFG: priority group configuration (NLA_NESTED)
* @DCB_ATTR_SET_ALL: bool to commit changes to hardware or not (NLA_U8)
* @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
* @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED)
* @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED)
* @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED)
* @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED)
* @DCB_ATTR_DCBX: DCBX engine configuration in the device (NLA_U8)
* @DCB_ATTR_FEATCFG: DCBX features flags (NLA_NESTED)
* @DCB_ATTR_CEE: CEE std supported attributes (NLA_NESTED)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
DCB_ATTR_IFNAME,
DCB_ATTR_STATE,
DCB_ATTR_PFC_STATE,
DCB_ATTR_PFC_CFG,
DCB_ATTR_NUM_TC,
DCB_ATTR_PG_CFG,
DCB_ATTR_SET_ALL,
DCB_ATTR_PERM_HWADDR,
DCB_ATTR_CAP,
DCB_ATTR_NUMTCS,
DCB_ATTR_BCN,
DCB_ATTR_APP,
/* IEEE std attributes */
DCB_ATTR_IEEE,
DCB_ATTR_DCBX,
DCB_ATTR_FEATCFG,
/* CEE nested attributes */
DCB_ATTR_CEE,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
};
/**
* enum ieee_attrs - IEEE 802.1Qaz get/set attributes
*
* @DCB_ATTR_IEEE_UNSPEC: unspecified
* @DCB_ATTR_IEEE_ETS: negotiated ETS configuration
* @DCB_ATTR_IEEE_PFC: negotiated PFC configuration
* @DCB_ATTR_IEEE_APP_TABLE: negotiated APP configuration
* @DCB_ATTR_IEEE_PEER_ETS: peer ETS configuration - get only
* @DCB_ATTR_IEEE_PEER_PFC: peer PFC configuration - get only
* @DCB_ATTR_IEEE_PEER_APP: peer APP tlv - get only
*/
enum ieee_attrs {
DCB_ATTR_IEEE_UNSPEC,
DCB_ATTR_IEEE_ETS,
DCB_ATTR_IEEE_PFC,
DCB_ATTR_IEEE_APP_TABLE,
DCB_ATTR_IEEE_PEER_ETS,
DCB_ATTR_IEEE_PEER_PFC,
DCB_ATTR_IEEE_PEER_APP,
DCB_ATTR_IEEE_MAXRATE,
DCB_ATTR_IEEE_QCN,
DCB_ATTR_IEEE_QCN_STATS,
DCB_ATTR_DCB_BUFFER,
__DCB_ATTR_IEEE_MAX
};
#define DCB_ATTR_IEEE_MAX (__DCB_ATTR_IEEE_MAX - 1)
enum ieee_attrs_app {
DCB_ATTR_IEEE_APP_UNSPEC,
DCB_ATTR_IEEE_APP,
__DCB_ATTR_IEEE_APP_MAX
};
#define DCB_ATTR_IEEE_APP_MAX (__DCB_ATTR_IEEE_APP_MAX - 1)
/**
* enum cee_attrs - CEE DCBX get attributes.
*
* @DCB_ATTR_CEE_UNSPEC: unspecified
* @DCB_ATTR_CEE_PEER_PG: peer PG configuration - get only
* @DCB_ATTR_CEE_PEER_PFC: peer PFC configuration - get only
* @DCB_ATTR_CEE_PEER_APP_TABLE: peer APP tlv - get only
* @DCB_ATTR_CEE_TX_PG: TX PG configuration (DCB_CMD_PGTX_GCFG)
* @DCB_ATTR_CEE_RX_PG: RX PG configuration (DCB_CMD_PGRX_GCFG)
* @DCB_ATTR_CEE_PFC: PFC configuration (DCB_CMD_PFC_GCFG)
* @DCB_ATTR_CEE_APP_TABLE: APP configuration (multi DCB_CMD_GAPP)
* @DCB_ATTR_CEE_FEAT: DCBX features flags (DCB_CMD_GFEATCFG)
*
* An aggregated collection of the cee std negotiated parameters.
*/
enum cee_attrs {
DCB_ATTR_CEE_UNSPEC,
DCB_ATTR_CEE_PEER_PG,
DCB_ATTR_CEE_PEER_PFC,
DCB_ATTR_CEE_PEER_APP_TABLE,
DCB_ATTR_CEE_TX_PG,
DCB_ATTR_CEE_RX_PG,
DCB_ATTR_CEE_PFC,
DCB_ATTR_CEE_APP_TABLE,
DCB_ATTR_CEE_FEAT,
__DCB_ATTR_CEE_MAX
};
#define DCB_ATTR_CEE_MAX (__DCB_ATTR_CEE_MAX - 1)
enum peer_app_attr {
DCB_ATTR_CEE_PEER_APP_UNSPEC,
DCB_ATTR_CEE_PEER_APP_INFO,
DCB_ATTR_CEE_PEER_APP,
__DCB_ATTR_CEE_PEER_APP_MAX
};
#define DCB_ATTR_CEE_PEER_APP_MAX (__DCB_ATTR_CEE_PEER_APP_MAX - 1)
enum cee_attrs_app {
DCB_ATTR_CEE_APP_UNSPEC,
DCB_ATTR_CEE_APP,
__DCB_ATTR_CEE_APP_MAX
};
#define DCB_ATTR_CEE_APP_MAX (__DCB_ATTR_CEE_APP_MAX - 1)
/**
* enum dcbnl_pfc_attrs - DCB Priority Flow Control user priority nested attrs
*
* @DCB_PFC_UP_ATTR_UNDEFINED: unspecified attribute to catch errors
* @DCB_PFC_UP_ATTR_0: Priority Flow Control value for User Priority 0 (NLA_U8)
* @DCB_PFC_UP_ATTR_1: Priority Flow Control value for User Priority 1 (NLA_U8)
* @DCB_PFC_UP_ATTR_2: Priority Flow Control value for User Priority 2 (NLA_U8)
* @DCB_PFC_UP_ATTR_3: Priority Flow Control value for User Priority 3 (NLA_U8)
* @DCB_PFC_UP_ATTR_4: Priority Flow Control value for User Priority 4 (NLA_U8)
* @DCB_PFC_UP_ATTR_5: Priority Flow Control value for User Priority 5 (NLA_U8)
* @DCB_PFC_UP_ATTR_6: Priority Flow Control value for User Priority 6 (NLA_U8)
* @DCB_PFC_UP_ATTR_7: Priority Flow Control value for User Priority 7 (NLA_U8)
* @DCB_PFC_UP_ATTR_MAX: highest attribute number currently defined
* @DCB_PFC_UP_ATTR_ALL: apply to all priority flow control attrs (NLA_FLAG)
*
*/
enum dcbnl_pfc_up_attrs {
DCB_PFC_UP_ATTR_UNDEFINED,
DCB_PFC_UP_ATTR_0,
DCB_PFC_UP_ATTR_1,
DCB_PFC_UP_ATTR_2,
DCB_PFC_UP_ATTR_3,
DCB_PFC_UP_ATTR_4,
DCB_PFC_UP_ATTR_5,
DCB_PFC_UP_ATTR_6,
DCB_PFC_UP_ATTR_7,
DCB_PFC_UP_ATTR_ALL,
__DCB_PFC_UP_ATTR_ENUM_MAX,
DCB_PFC_UP_ATTR_MAX = __DCB_PFC_UP_ATTR_ENUM_MAX - 1,
};
/**
* enum dcbnl_pg_attrs - DCB Priority Group attributes
*
* @DCB_PG_ATTR_UNDEFINED: unspecified attribute to catch errors
* @DCB_PG_ATTR_TC_0: Priority Group Traffic Class 0 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_1: Priority Group Traffic Class 1 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_2: Priority Group Traffic Class 2 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_3: Priority Group Traffic Class 3 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_4: Priority Group Traffic Class 4 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_5: Priority Group Traffic Class 5 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_6: Priority Group Traffic Class 6 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_7: Priority Group Traffic Class 7 configuration (NLA_NESTED)
* @DCB_PG_ATTR_TC_MAX: highest attribute number currently defined
* @DCB_PG_ATTR_TC_ALL: apply to all traffic classes (NLA_NESTED)
* @DCB_PG_ATTR_BW_ID_0: Percent of link bandwidth for Priority Group 0 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_1: Percent of link bandwidth for Priority Group 1 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_2: Percent of link bandwidth for Priority Group 2 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_3: Percent of link bandwidth for Priority Group 3 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_4: Percent of link bandwidth for Priority Group 4 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_5: Percent of link bandwidth for Priority Group 5 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_6: Percent of link bandwidth for Priority Group 6 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_7: Percent of link bandwidth for Priority Group 7 (NLA_U8)
* @DCB_PG_ATTR_BW_ID_MAX: highest attribute number currently defined
* @DCB_PG_ATTR_BW_ID_ALL: apply to all priority groups (NLA_FLAG)
*
*/
enum dcbnl_pg_attrs {
DCB_PG_ATTR_UNDEFINED,
DCB_PG_ATTR_TC_0,
DCB_PG_ATTR_TC_1,
DCB_PG_ATTR_TC_2,
DCB_PG_ATTR_TC_3,
DCB_PG_ATTR_TC_4,
DCB_PG_ATTR_TC_5,
DCB_PG_ATTR_TC_6,
DCB_PG_ATTR_TC_7,
DCB_PG_ATTR_TC_MAX,
DCB_PG_ATTR_TC_ALL,
DCB_PG_ATTR_BW_ID_0,
DCB_PG_ATTR_BW_ID_1,
DCB_PG_ATTR_BW_ID_2,
DCB_PG_ATTR_BW_ID_3,
DCB_PG_ATTR_BW_ID_4,
DCB_PG_ATTR_BW_ID_5,
DCB_PG_ATTR_BW_ID_6,
DCB_PG_ATTR_BW_ID_7,
DCB_PG_ATTR_BW_ID_MAX,
DCB_PG_ATTR_BW_ID_ALL,
__DCB_PG_ATTR_ENUM_MAX,
DCB_PG_ATTR_MAX = __DCB_PG_ATTR_ENUM_MAX - 1,
};
/**
* enum dcbnl_tc_attrs - DCB Traffic Class attributes
*
* @DCB_TC_ATTR_PARAM_UNDEFINED: unspecified attribute to catch errors
* @DCB_TC_ATTR_PARAM_PGID: (NLA_U8) Priority group the traffic class belongs to
* Valid values are: 0-7
* @DCB_TC_ATTR_PARAM_UP_MAPPING: (NLA_U8) Traffic class to user priority map
* Some devices may not support changing the
* user priority map of a TC.
* @DCB_TC_ATTR_PARAM_STRICT_PRIO: (NLA_U8) Strict priority setting
* 0 - none
* 1 - group strict
* 2 - link strict
* @DCB_TC_ATTR_PARAM_BW_PCT: optional - (NLA_U8) If supported by the device and
* not configured to use link strict priority,
* this is the percentage of bandwidth of the
* priority group this traffic class belongs to
* @DCB_TC_ATTR_PARAM_ALL: (NLA_FLAG) all traffic class parameters
*
*/
enum dcbnl_tc_attrs {
DCB_TC_ATTR_PARAM_UNDEFINED,
DCB_TC_ATTR_PARAM_PGID,
DCB_TC_ATTR_PARAM_UP_MAPPING,
DCB_TC_ATTR_PARAM_STRICT_PRIO,
DCB_TC_ATTR_PARAM_BW_PCT,
DCB_TC_ATTR_PARAM_ALL,
__DCB_TC_ATTR_PARAM_ENUM_MAX,
DCB_TC_ATTR_PARAM_MAX = __DCB_TC_ATTR_PARAM_ENUM_MAX - 1,
};
/**
* enum dcbnl_cap_attrs - DCB Capability attributes
*
* @DCB_CAP_ATTR_UNDEFINED: unspecified attribute to catch errors
* @DCB_CAP_ATTR_ALL: (NLA_FLAG) all capability parameters
* @DCB_CAP_ATTR_PG: (NLA_U8) device supports Priority Groups
* @DCB_CAP_ATTR_PFC: (NLA_U8) device supports Priority Flow Control
* @DCB_CAP_ATTR_UP2TC: (NLA_U8) device supports user priority to
* traffic class mapping
* @DCB_CAP_ATTR_PG_TCS: (NLA_U8) bitmap where each bit represents a
* number of traffic classes the device
* can be configured to use for Priority Groups
* @DCB_CAP_ATTR_PFC_TCS: (NLA_U8) bitmap where each bit represents a
* number of traffic classes the device can be
* configured to use for Priority Flow Control
* @DCB_CAP_ATTR_GSP: (NLA_U8) device supports group strict priority
* @DCB_CAP_ATTR_BCN: (NLA_U8) device supports Backwards Congestion
* Notification
* @DCB_CAP_ATTR_DCBX: (NLA_U8) device supports DCBX engine
*
*/
enum dcbnl_cap_attrs {
DCB_CAP_ATTR_UNDEFINED,
DCB_CAP_ATTR_ALL,
DCB_CAP_ATTR_PG,
DCB_CAP_ATTR_PFC,
DCB_CAP_ATTR_UP2TC,
DCB_CAP_ATTR_PG_TCS,
DCB_CAP_ATTR_PFC_TCS,
DCB_CAP_ATTR_GSP,
DCB_CAP_ATTR_BCN,
DCB_CAP_ATTR_DCBX,
__DCB_CAP_ATTR_ENUM_MAX,
DCB_CAP_ATTR_MAX = __DCB_CAP_ATTR_ENUM_MAX - 1,
};
/**
* DCBX capability flags
*
* @DCB_CAP_DCBX_HOST: DCBX negotiation is performed by the host LLDP agent.
* 'set' routines are used to configure the device with
* the negotiated parameters
*
* @DCB_CAP_DCBX_LLD_MANAGED: DCBX negotiation is not performed in the host but
* by another entity
* 'get' routines are used to retrieve the
* negotiated parameters
* 'set' routines can be used to set the initial
* negotiation configuration
*
* @DCB_CAP_DCBX_VER_CEE: for a non-host DCBX engine, indicates the engine
* supports the CEE protocol flavor
*
* @DCB_CAP_DCBX_VER_IEEE: for a non-host DCBX engine, indicates the engine
* supports the IEEE protocol flavor
*
* @DCB_CAP_DCBX_STATIC: for a non-host DCBX engine, indicates the engine
* supports static configuration (i.e no actual
* negotiation is performed negotiated parameters equal
* the initial configuration)
*
*/
#define DCB_CAP_DCBX_HOST 0x01
#define DCB_CAP_DCBX_LLD_MANAGED 0x02
#define DCB_CAP_DCBX_VER_CEE 0x04
#define DCB_CAP_DCBX_VER_IEEE 0x08
#define DCB_CAP_DCBX_STATIC 0x10
/**
* enum dcbnl_numtcs_attrs - number of traffic classes
*
* @DCB_NUMTCS_ATTR_UNDEFINED: unspecified attribute to catch errors
* @DCB_NUMTCS_ATTR_ALL: (NLA_FLAG) all traffic class attributes
* @DCB_NUMTCS_ATTR_PG: (NLA_U8) number of traffic classes used for
* priority groups
* @DCB_NUMTCS_ATTR_PFC: (NLA_U8) number of traffic classes which can
* support priority flow control
*/
enum dcbnl_numtcs_attrs {
DCB_NUMTCS_ATTR_UNDEFINED,
DCB_NUMTCS_ATTR_ALL,
DCB_NUMTCS_ATTR_PG,
DCB_NUMTCS_ATTR_PFC,
__DCB_NUMTCS_ATTR_ENUM_MAX,
DCB_NUMTCS_ATTR_MAX = __DCB_NUMTCS_ATTR_ENUM_MAX - 1,
};
enum dcbnl_bcn_attrs{
DCB_BCN_ATTR_UNDEFINED = 0,
DCB_BCN_ATTR_RP_0,
DCB_BCN_ATTR_RP_1,
DCB_BCN_ATTR_RP_2,
DCB_BCN_ATTR_RP_3,
DCB_BCN_ATTR_RP_4,
DCB_BCN_ATTR_RP_5,
DCB_BCN_ATTR_RP_6,
DCB_BCN_ATTR_RP_7,
DCB_BCN_ATTR_RP_ALL,
DCB_BCN_ATTR_BCNA_0,
DCB_BCN_ATTR_BCNA_1,
DCB_BCN_ATTR_ALPHA,
DCB_BCN_ATTR_BETA,
DCB_BCN_ATTR_GD,
DCB_BCN_ATTR_GI,
DCB_BCN_ATTR_TMAX,
DCB_BCN_ATTR_TD,
DCB_BCN_ATTR_RMIN,
DCB_BCN_ATTR_W,
DCB_BCN_ATTR_RD,
DCB_BCN_ATTR_RU,
DCB_BCN_ATTR_WRTT,
DCB_BCN_ATTR_RI,
DCB_BCN_ATTR_C,
DCB_BCN_ATTR_ALL,
__DCB_BCN_ATTR_ENUM_MAX,
DCB_BCN_ATTR_MAX = __DCB_BCN_ATTR_ENUM_MAX - 1,
};
/**
* enum dcb_general_attr_values - general DCB attribute values
*
* @DCB_ATTR_UNDEFINED: value used to indicate an attribute is not supported
*
*/
enum dcb_general_attr_values {
DCB_ATTR_VALUE_UNDEFINED = 0xff
};
#define DCB_APP_IDTYPE_ETHTYPE 0x00
#define DCB_APP_IDTYPE_PORTNUM 0x01
enum dcbnl_app_attrs {
DCB_APP_ATTR_UNDEFINED,
DCB_APP_ATTR_IDTYPE,
DCB_APP_ATTR_ID,
DCB_APP_ATTR_PRIORITY,
__DCB_APP_ATTR_ENUM_MAX,
DCB_APP_ATTR_MAX = __DCB_APP_ATTR_ENUM_MAX - 1,
};
/**
* enum dcbnl_featcfg_attrs - features conifiguration flags
*
* @DCB_FEATCFG_ATTR_UNDEFINED: unspecified attribute to catch errors
* @DCB_FEATCFG_ATTR_ALL: (NLA_FLAG) all features configuration attributes
* @DCB_FEATCFG_ATTR_PG: (NLA_U8) configuration flags for priority groups
* @DCB_FEATCFG_ATTR_PFC: (NLA_U8) configuration flags for priority
* flow control
* @DCB_FEATCFG_ATTR_APP: (NLA_U8) configuration flags for application TLV
*
*/
#define DCB_FEATCFG_ERROR 0x01 /* error in feature resolution */
#define DCB_FEATCFG_ENABLE 0x02 /* enable feature */
#define DCB_FEATCFG_WILLING 0x04 /* feature is willing */
#define DCB_FEATCFG_ADVERTISE 0x08 /* advertise feature */
enum dcbnl_featcfg_attrs {
DCB_FEATCFG_ATTR_UNDEFINED,
DCB_FEATCFG_ATTR_ALL,
DCB_FEATCFG_ATTR_PG,
DCB_FEATCFG_ATTR_PFC,
DCB_FEATCFG_ATTR_APP,
__DCB_FEATCFG_ATTR_ENUM_MAX,
DCB_FEATCFG_ATTR_MAX = __DCB_FEATCFG_ATTR_ENUM_MAX - 1,
};
#endif /* __LINUX_DCBNL_H__ */
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