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numam-dpdk/lib/librte_ethdev/rte_tm.h
Nithin Dabilpuram bf4e0faae9 ethdev: support TM for shaper config in packet mode 
Some NIC hardware support shaper to work in packet mode i.e
shaping or ratelimiting traffic is in packets per second (PPS) as
opposed to default bytes per second (BPS). Hence this patch
adds support to configure shared or private shaper in packet mode,
provide rate in PPS and add related tm capabilities in port/level/node
capability structures.

This patch also updates tm port/level/node capability structures with
exiting features of scheduler wfq packet mode, scheduler wfq byte mode
and private/shared shaper byte mode.

SoftNIC PMD is also updated with new capabilities.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2020-09-18 18:55:10 +02:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017 Intel Corporation.
* Copyright(c) 2017 Cavium.
* Copyright(c) 2017 NXP.
*/
#ifndef __INCLUDE_RTE_TM_H__
#define __INCLUDE_RTE_TM_H__
/**
* @file
* RTE Generic Traffic Manager API
*
* This interface provides the ability to configure the traffic manager in a
* generic way. It includes features such as: hierarchical scheduling,
* traffic shaping, congestion management, packet marking, etc.
*
* @warning
* @b EXPERIMENTAL:
* All functions in this file may be changed or removed without prior notice.
*/
#include <stdint.h>
#include <rte_common.h>
#include <rte_meter.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Ethernet framing overhead.
*
* Overhead fields per Ethernet frame:
* 1. Preamble: 7 bytes;
* 2. Start of Frame Delimiter (SFD): 1 byte;
* 3. Inter-Frame Gap (IFG): 12 bytes.
*
* One of the typical values for the *pkt_length_adjust* field of the shaper
* profile.
*
* @see struct rte_tm_shaper_params
*/
#define RTE_TM_ETH_FRAMING_OVERHEAD 20
/**
* Ethernet framing overhead including the Frame Check Sequence (FCS) field.
* Useful when FCS is generated and added at the end of the Ethernet frame on
* TX side without any SW intervention.
*
* One of the typical values for the pkt_length_adjust field of the shaper
* profile.
*
* @see struct rte_tm_shaper_params
*/
#define RTE_TM_ETH_FRAMING_OVERHEAD_FCS 24
/**
* Invalid WRED profile ID.
*
* @see struct rte_tm_node_params
* @see rte_tm_node_add()
* @see rte_tm_node_wred_context_update()
*/
#define RTE_TM_WRED_PROFILE_ID_NONE UINT32_MAX
/**
*Invalid shaper profile ID.
*
* @see struct rte_tm_node_params
* @see rte_tm_node_add()
* @see rte_tm_node_shaper_update()
*/
#define RTE_TM_SHAPER_PROFILE_ID_NONE UINT32_MAX
/**
* Node ID for the parent of the root node.
*
* @see rte_tm_node_add()
*/
#define RTE_TM_NODE_ID_NULL UINT32_MAX
/**
* Node level ID used to disable level ID checking.
*
* @see rte_tm_node_add()
*/
#define RTE_TM_NODE_LEVEL_ID_ANY UINT32_MAX
/**
* Node statistics counter type
*/
enum rte_tm_stats_type {
/** Number of packets scheduled from current node. */
RTE_TM_STATS_N_PKTS = 1 << 0,
/** Number of bytes scheduled from current node. */
RTE_TM_STATS_N_BYTES = 1 << 1,
/** Number of green packets dropped by current leaf node. */
RTE_TM_STATS_N_PKTS_GREEN_DROPPED = 1 << 2,
/** Number of yellow packets dropped by current leaf node. */
RTE_TM_STATS_N_PKTS_YELLOW_DROPPED = 1 << 3,
/** Number of red packets dropped by current leaf node. */
RTE_TM_STATS_N_PKTS_RED_DROPPED = 1 << 4,
/** Number of green bytes dropped by current leaf node. */
RTE_TM_STATS_N_BYTES_GREEN_DROPPED = 1 << 5,
/** Number of yellow bytes dropped by current leaf node. */
RTE_TM_STATS_N_BYTES_YELLOW_DROPPED = 1 << 6,
/** Number of red bytes dropped by current leaf node. */
RTE_TM_STATS_N_BYTES_RED_DROPPED = 1 << 7,
/** Number of packets currently waiting in the packet queue of current
* leaf node.
*/
RTE_TM_STATS_N_PKTS_QUEUED = 1 << 8,
/** Number of bytes currently waiting in the packet queue of current
* leaf node.
*/
RTE_TM_STATS_N_BYTES_QUEUED = 1 << 9,
};
/**
* Node statistics counters
*/
struct rte_tm_node_stats {
/** Number of packets scheduled from current node. */
uint64_t n_pkts;
/** Number of bytes scheduled from current node. */
uint64_t n_bytes;
/** Statistics counters for leaf nodes only. */
struct {
/** Number of packets dropped by current leaf node per each
* color.
*/
uint64_t n_pkts_dropped[RTE_COLORS];
/** Number of bytes dropped by current leaf node per each
* color.
*/
uint64_t n_bytes_dropped[RTE_COLORS];
/** Number of packets currently waiting in the packet queue of
* current leaf node.
*/
uint64_t n_pkts_queued;
/** Number of bytes currently waiting in the packet queue of
* current leaf node.
*/
uint64_t n_bytes_queued;
} leaf;
};
/**
* Traffic manager dynamic updates
*/
enum rte_tm_dynamic_update_type {
/** Dynamic parent node update. The new parent node is located on same
* hierarchy level as the former parent node. Consequently, the node
* whose parent is changed preserves its hierarchy level.
*/
RTE_TM_UPDATE_NODE_PARENT_KEEP_LEVEL = 1 << 0,
/** Dynamic parent node update. The new parent node is located on
* different hierarchy level than the former parent node. Consequently,
* the node whose parent is changed also changes its hierarchy level.
*/
RTE_TM_UPDATE_NODE_PARENT_CHANGE_LEVEL = 1 << 1,
/** Dynamic node add/delete. */
RTE_TM_UPDATE_NODE_ADD_DELETE = 1 << 2,
/** Suspend/resume nodes. */
RTE_TM_UPDATE_NODE_SUSPEND_RESUME = 1 << 3,
/** Dynamic switch between byte-based and packet-based WFQ weights. */
RTE_TM_UPDATE_NODE_WFQ_WEIGHT_MODE = 1 << 4,
/** Dynamic update on number of SP priorities. */
RTE_TM_UPDATE_NODE_N_SP_PRIORITIES = 1 << 5,
/** Dynamic update of congestion management mode for leaf nodes. */
RTE_TM_UPDATE_NODE_CMAN = 1 << 6,
/** Dynamic update of the set of enabled stats counter types. */
RTE_TM_UPDATE_NODE_STATS = 1 << 7,
};
/**
* Traffic manager capabilities
*/
struct rte_tm_capabilities {
/** Maximum number of nodes. */
uint32_t n_nodes_max;
/** Maximum number of levels (i.e. number of nodes connecting the root
* node with any leaf node, including the root and the leaf).
*/
uint32_t n_levels_max;
/** When non-zero, this flag indicates that all the non-leaf nodes
* (with the exception of the root node) have identical capability set.
*/
int non_leaf_nodes_identical;
/** When non-zero, this flag indicates that all the leaf nodes have
* identical capability set.
*/
int leaf_nodes_identical;
/** Maximum number of shapers, either private or shared. In case the
* implementation does not share any resources between private and
* shared shapers, it is typically equal to the sum of
* *shaper_private_n_max* and *shaper_shared_n_max*. The
* value of zero indicates that traffic shaping is not supported.
*/
uint32_t shaper_n_max;
/** Maximum number of private shapers. Indicates the maximum number of
* nodes that can concurrently have their private shaper enabled. The
* value of zero indicates that private shapers are not supported.
*/
uint32_t shaper_private_n_max;
/** Maximum number of private shapers that support dual rate shaping.
* Indicates the maximum number of nodes that can concurrently have
* their private shaper enabled with dual rate support. Only valid when
* private shapers are supported. The value of zero indicates that dual
* rate shaping is not available for private shapers. The maximum value
* is *shaper_private_n_max*.
*/
int shaper_private_dual_rate_n_max;
/** Minimum committed/peak rate (bytes per second) for any private
* shaper. Valid only when private shapers are supported.
*/
uint64_t shaper_private_rate_min;
/** Maximum committed/peak rate (bytes per second) for any private
* shaper. Valid only when private shapers are supported.
*/
uint64_t shaper_private_rate_max;
/** Shaper private packet mode supported. When non-zero, this parameter
* indicates that there is at least one node that can be configured
* with packet mode in its private shaper. When shaper is configured
* in packet mode, committed/peak rate provided is interpreted
* in packets per second.
*/
int shaper_private_packet_mode_supported;
/** Shaper private byte mode supported. When non-zero, this parameter
* indicates that there is at least one node that can be configured
* with byte mode in its private shaper. When shaper is configured
* in byte mode, committed/peak rate provided is interpreted in
* bytes per second.
*/
int shaper_private_byte_mode_supported;
/** Maximum number of shared shapers. The value of zero indicates that
* shared shapers are not supported.
*/
uint32_t shaper_shared_n_max;
/** Maximum number of nodes that can share the same shared shaper.
* Only valid when shared shapers are supported.
*/
uint32_t shaper_shared_n_nodes_per_shaper_max;
/** Maximum number of shared shapers a node can be part of. This
* parameter indicates that there is at least one node that can be
* configured with this many shared shapers, which might not be true for
* all the nodes. Only valid when shared shapers are supported, in which
* case it ranges from 1 to *shaper_shared_n_max*.
*/
uint32_t shaper_shared_n_shapers_per_node_max;
/** Maximum number of shared shapers that can be configured with dual
* rate shaping. The value of zero indicates that dual rate shaping
* support is not available for shared shapers.
*/
uint32_t shaper_shared_dual_rate_n_max;
/** Minimum committed/peak rate (bytes per second) for any shared
* shaper. Only valid when shared shapers are supported.
*/
uint64_t shaper_shared_rate_min;
/** Maximum committed/peak rate (bytes per second) for any shared
* shaper. Only valid when shared shapers are supported.
*/
uint64_t shaper_shared_rate_max;
/** Shaper shared packet mode supported. When non-zero, this parameter
* indicates a shared shaper can be configured with packet mode.
* When shared shaper is configured in packet mode, committed/peak rate
* provided is interpreted in packets per second.
*/
int shaper_shared_packet_mode_supported;
/** Shaper shared byte mode supported. When non-zero, this parameter
* indicates that a shared shaper can be configured with byte mode.
* When shared shaper is configured in byte mode, committed/peak rate
* provided is interpreted in bytes per second.
*/
int shaper_shared_byte_mode_supported;
/** Minimum value allowed for packet length adjustment for any private
* or shared shaper.
*/
int shaper_pkt_length_adjust_min;
/** Maximum value allowed for packet length adjustment for any private
* or shared shaper.
*/
int shaper_pkt_length_adjust_max;
/** Maximum number of children nodes. This parameter indicates that
* there is at least one non-leaf node that can be configured with this
* many children nodes, which might not be true for all the non-leaf
* nodes.
*/
uint32_t sched_n_children_max;
/** Maximum number of supported priority levels. This parameter
* indicates that there is at least one non-leaf node that can be
* configured with this many priority levels for managing its children
* nodes, which might not be true for all the non-leaf nodes. The value
* of zero is invalid. The value of 1 indicates that only priority 0 is
* supported, which essentially means that Strict Priority (SP)
* algorithm is not supported.
*/
uint32_t sched_sp_n_priorities_max;
/** Maximum number of sibling nodes that can have the same priority at
* any given time, i.e. maximum size of the WFQ sibling node group. This
* parameter indicates there is at least one non-leaf node that meets
* this condition, which might not be true for all the non-leaf nodes.
* The value of zero is invalid. The value of 1 indicates that WFQ
* algorithm is not supported. The maximum value is
* *sched_n_children_max*.
*/
uint32_t sched_wfq_n_children_per_group_max;
/** Maximum number of priority levels that can have more than one child
* node at any given time, i.e. maximum number of WFQ sibling node
* groups that have two or more members. This parameter indicates there
* is at least one non-leaf node that meets this condition, which might
* not be true for all the non-leaf nodes. The value of zero states that
* WFQ algorithm is not supported. The value of 1 indicates that
* (*sched_sp_n_priorities_max* - 1) priority levels have at most one
* child node, so there can be only one priority level with two or
* more sibling nodes making up a WFQ group. The maximum value is:
* min(floor(*sched_n_children_max* / 2), *sched_sp_n_priorities_max*).
*/
uint32_t sched_wfq_n_groups_max;
/** Maximum WFQ weight. The value of 1 indicates that all sibling nodes
* with same priority have the same WFQ weight, so WFQ is reduced to FQ.
*/
uint32_t sched_wfq_weight_max;
/** WFQ packet mode supported. When non-zero, this parameter indicates
* that there is at least one non-leaf node that supports packet mode
* for WFQ among its children. WFQ weights will be applied against
* packet count for scheduling children when a non-leaf node
* is configured appropriately.
*/
int sched_wfq_packet_mode_supported;
/** WFQ byte mode supported. When non-zero, this parameter indicates
* that there is at least one non-leaf node that supports byte mode
* for WFQ among its children. WFQ weights will be applied against
* bytes for scheduling children when a non-leaf node is configured
* appropriately.
*/
int sched_wfq_byte_mode_supported;
/** WRED packet mode support. When non-zero, this parameter indicates
* that there is at least one leaf node that supports the WRED packet
* mode, which might not be true for all the leaf nodes. In packet
* mode, the WRED thresholds specify the queue length in packets, as
* opposed to bytes.
*/
int cman_wred_packet_mode_supported;
/** WRED byte mode support. When non-zero, this parameter indicates that
* there is at least one leaf node that supports the WRED byte mode,
* which might not be true for all the leaf nodes. In byte mode, the
* WRED thresholds specify the queue length in bytes, as opposed to
* packets.
*/
int cman_wred_byte_mode_supported;
/** Head drop algorithm support. When non-zero, this parameter
* indicates that there is at least one leaf node that supports the head
* drop algorithm, which might not be true for all the leaf nodes.
*/
int cman_head_drop_supported;
/** Maximum number of WRED contexts, either private or shared. In case
* the implementation does not share any resources between private and
* shared WRED contexts, it is typically equal to the sum of
* *cman_wred_context_private_n_max* and
* *cman_wred_context_shared_n_max*. The value of zero indicates that
* WRED is not supported.
*/
uint32_t cman_wred_context_n_max;
/** Maximum number of private WRED contexts. Indicates the maximum
* number of leaf nodes that can concurrently have their private WRED
* context enabled. The value of zero indicates that private WRED
* contexts are not supported.
*/
uint32_t cman_wred_context_private_n_max;
/** Maximum number of shared WRED contexts. The value of zero
* indicates that shared WRED contexts are not supported.
*/
uint32_t cman_wred_context_shared_n_max;
/** Maximum number of leaf nodes that can share the same WRED context.
* Only valid when shared WRED contexts are supported.
*/
uint32_t cman_wred_context_shared_n_nodes_per_context_max;
/** Maximum number of shared WRED contexts a leaf node can be part of.
* This parameter indicates that there is at least one leaf node that
* can be configured with this many shared WRED contexts, which might
* not be true for all the leaf nodes. Only valid when shared WRED
* contexts are supported, in which case it ranges from 1 to
* *cman_wred_context_shared_n_max*.
*/
uint32_t cman_wred_context_shared_n_contexts_per_node_max;
/** Support for VLAN DEI packet marking (per color). */
int mark_vlan_dei_supported[RTE_COLORS];
/** Support for IPv4/IPv6 ECN marking of TCP packets (per color). */
int mark_ip_ecn_tcp_supported[RTE_COLORS];
/** Support for IPv4/IPv6 ECN marking of SCTP packets (per color). */
int mark_ip_ecn_sctp_supported[RTE_COLORS];
/** Support for IPv4/IPv6 DSCP packet marking (per color). */
int mark_ip_dscp_supported[RTE_COLORS];
/** Set of supported dynamic update operations.
* @see enum rte_tm_dynamic_update_type
*/
uint64_t dynamic_update_mask;
/** Set of supported statistics counter types.
* @see enum rte_tm_stats_type
*/
uint64_t stats_mask;
};
/**
* Traffic manager level capabilities
*/
struct rte_tm_level_capabilities {
/** Maximum number of nodes for the current hierarchy level. */
uint32_t n_nodes_max;
/** Maximum number of non-leaf nodes for the current hierarchy level.
* The value of 0 indicates that current level only supports leaf
* nodes. The maximum value is *n_nodes_max*.
*/
uint32_t n_nodes_nonleaf_max;
/** Maximum number of leaf nodes for the current hierarchy level. The
* value of 0 indicates that current level only supports non-leaf
* nodes. The maximum value is *n_nodes_max*.
*/
uint32_t n_nodes_leaf_max;
/** When non-zero, this flag indicates that all the non-leaf nodes on
* this level have identical capability set. Valid only when
* *n_nodes_nonleaf_max* is non-zero.
*/
int non_leaf_nodes_identical;
/** When non-zero, this flag indicates that all the leaf nodes on this
* level have identical capability set. Valid only when
* *n_nodes_leaf_max* is non-zero.
*/
int leaf_nodes_identical;
RTE_STD_C11
union {
/** Items valid only for the non-leaf nodes on this level. */
struct {
/** Private shaper support. When non-zero, it indicates
* there is at least one non-leaf node on this level
* with private shaper support, which may not be the
* case for all the non-leaf nodes on this level.
*/
int shaper_private_supported;
/** Dual rate support for private shaper. Valid only
* when private shaper is supported for the non-leaf
* nodes on the current level. When non-zero, it
* indicates there is at least one non-leaf node on this
* level with dual rate private shaper support, which
* may not be the case for all the non-leaf nodes on
* this level.
*/
int shaper_private_dual_rate_supported;
/** Minimum committed/peak rate (bytes per second) for
* private shapers of the non-leaf nodes of this level.
* Valid only when private shaper is supported on this
* level.
*/
uint64_t shaper_private_rate_min;
/** Maximum committed/peak rate (bytes per second) for
* private shapers of the non-leaf nodes on this level.
* Valid only when private shaper is supported on this
* level.
*/
uint64_t shaper_private_rate_max;
/** Shaper private packet mode supported. When non-zero,
* this parameter indicates there is at least one
* non-leaf node at this level that can be configured
* with packet mode in its private shaper. When private
* shaper is configured in packet mode, committed/peak
* rate provided is interpreted in packets per second.
*/
int shaper_private_packet_mode_supported;
/** Shaper private byte mode supported. When non-zero,
* this parameter indicates there is at least one
* non-leaf node at this level that can be configured
* with byte mode in its private shaper. When private
* shaper is configured in byte mode, committed/peak
* rate provided is interpreted in bytes per second.
*/
int shaper_private_byte_mode_supported;
/** Maximum number of shared shapers that any non-leaf
* node on this level can be part of. The value of zero
* indicates that shared shapers are not supported by
* the non-leaf nodes on this level. When non-zero, it
* indicates there is at least one non-leaf node on this
* level that meets this condition, which may not be the
* case for all the non-leaf nodes on this level.
*/
uint32_t shaper_shared_n_max;
/** Shaper shared packet mode supported. When non-zero,
* this parameter indicates that there is at least one
* non-leaf node on this level that can be part of
* shared shapers which work in packet mode.
*/
int shaper_shared_packet_mode_supported;
/** Shaper shared byte mode supported. When non-zero,
* this parameter indicates that there is at least one
* non-leaf node on this level that can be part of
* shared shapers which work in byte mode.
*/
int shaper_shared_byte_mode_supported;
/** Maximum number of children nodes. This parameter
* indicates that there is at least one non-leaf node on
* this level that can be configured with this many
* children nodes, which might not be true for all the
* non-leaf nodes on this level.
*/
uint32_t sched_n_children_max;
/** Maximum number of supported priority levels. This
* parameter indicates that there is at least one
* non-leaf node on this level that can be configured
* with this many priority levels for managing its
* children nodes, which might not be true for all the
* non-leaf nodes on this level. The value of zero is
* invalid. The value of 1 indicates that only priority
* 0 is supported, which essentially means that Strict
* Priority (SP) algorithm is not supported on this
* level.
*/
uint32_t sched_sp_n_priorities_max;
/** Maximum number of sibling nodes that can have the
* same priority at any given time, i.e. maximum size of
* the WFQ sibling node group. This parameter indicates
* there is at least one non-leaf node on this level
* that meets this condition, which may not be true for
* all the non-leaf nodes on this level. The value of
* zero is invalid. The value of 1 indicates that WFQ
* algorithm is not supported on this level. The maximum
* value is *sched_n_children_max*.
*/
uint32_t sched_wfq_n_children_per_group_max;
/** Maximum number of priority levels that can have
* more than one child node at any given time, i.e.
* maximum number of WFQ sibling node groups that
* have two or more members. This parameter indicates
* there is at least one non-leaf node on this level
* that meets this condition, which might not be true
* for all the non-leaf nodes. The value of zero states
* that WFQ algorithm is not supported on this level.
* The value of 1 indicates that
* (*sched_sp_n_priorities_max* - 1) priority levels on
* this level have at most one child node, so there can
* be only one priority level with two or more sibling
* nodes making up a WFQ group on this level. The
* maximum value is:
* min(floor(*sched_n_children_max* / 2),
* *sched_sp_n_priorities_max*).
*/
uint32_t sched_wfq_n_groups_max;
/** Maximum WFQ weight. The value of 1 indicates that
* all sibling nodes on this level with same priority
* have the same WFQ weight, so on this level WFQ is
* reduced to FQ.
*/
uint32_t sched_wfq_weight_max;
/** WFQ packet mode supported. When non-zero, this
* parameter indicates that there is at least one
* non-leaf node at this level that supports packet
* mode for WFQ among its children. WFQ weights will
* be applied against packet count for scheduling
* children when a non-leaf node is configured
* appropriately.
*/
int sched_wfq_packet_mode_supported;
/** WFQ byte mode supported. When non-zero, this
* parameter indicates that there is at least one
* non-leaf node at this level that supports byte
* mode for WFQ among its children. WFQ weights will
* be applied against bytes for scheduling children
* when a non-leaf node is configured appropriately.
*/
int sched_wfq_byte_mode_supported;
/** Mask of statistics counter types supported by the
* non-leaf nodes on this level. Every supported
* statistics counter type is supported by at least one
* non-leaf node on this level, which may not be true
* for all the non-leaf nodes on this level.
* @see enum rte_tm_stats_type
*/
uint64_t stats_mask;
} nonleaf;
/** Items valid only for the leaf nodes on this level. */
struct {
/** Private shaper support. When non-zero, it indicates
* there is at least one leaf node on this level with
* private shaper support, which may not be the case for
* all the leaf nodes on this level.
*/
int shaper_private_supported;
/** Dual rate support for private shaper. Valid only
* when private shaper is supported for the leaf nodes
* on this level. When non-zero, it indicates there is
* at least one leaf node on this level with dual rate
* private shaper support, which may not be the case for
* all the leaf nodes on this level.
*/
int shaper_private_dual_rate_supported;
/** Minimum committed/peak rate (bytes per second) for
* private shapers of the leaf nodes of this level.
* Valid only when private shaper is supported for the
* leaf nodes on this level.
*/
uint64_t shaper_private_rate_min;
/** Maximum committed/peak rate (bytes per second) for
* private shapers of the leaf nodes on this level.
* Valid only when private shaper is supported for the
* leaf nodes on this level.
*/
uint64_t shaper_private_rate_max;
/** Shaper private packet mode supported. When non-zero,
* this parameter indicates there is at least one leaf
* node at this level that can be configured with
* packet mode in its private shaper. When private
* shaper is configured in packet mode, committed/peak
* rate provided is interpreted in packets per second.
*/
int shaper_private_packet_mode_supported;
/** Shaper private byte mode supported. When non-zero,
* this parameter indicates there is at least one leaf
* node at this level that can be configured with
* byte mode in its private shaper. When private shaper
* is configured in byte mode, committed/peak rate
* provided is interpreted in bytes per second.
*/
int shaper_private_byte_mode_supported;
/** Maximum number of shared shapers that any leaf node
* on this level can be part of. The value of zero
* indicates that shared shapers are not supported by
* the leaf nodes on this level. When non-zero, it
* indicates there is at least one leaf node on this
* level that meets this condition, which may not be the
* case for all the leaf nodes on this level.
*/
uint32_t shaper_shared_n_max;
/** Shaper shared packet mode supported. When non-zero,
* this parameter indicates that there is at least one
* leaf node on this level that can be part of
* shared shapers which work in packet mode.
*/
int shaper_shared_packet_mode_supported;
/** Shaper shared byte mode supported. When non-zero,
* this parameter indicates that there is at least one
* leaf node on this level that can be part of
* shared shapers which work in byte mode.
*/
int shaper_shared_byte_mode_supported;
/** WRED packet mode support. When non-zero, this
* parameter indicates that there is at least one leaf
* node on this level that supports the WRED packet
* mode, which might not be true for all the leaf
* nodes. In packet mode, the WRED thresholds specify
* the queue length in packets, as opposed to bytes.
*/
int cman_wred_packet_mode_supported;
/** WRED byte mode support. When non-zero, this
* parameter indicates that there is at least one leaf
* node on this level that supports the WRED byte mode,
* which might not be true for all the leaf nodes. In
* byte mode, the WRED thresholds specify the queue
* length in bytes, as opposed to packets.
*/
int cman_wred_byte_mode_supported;
/** Head drop algorithm support. When non-zero, this
* parameter indicates that there is at least one leaf
* node on this level that supports the head drop
* algorithm, which might not be true for all the leaf
* nodes on this level.
*/
int cman_head_drop_supported;
/** Private WRED context support. When non-zero, it
* indicates there is at least one node on this level
* with private WRED context support, which may not be
* true for all the leaf nodes on this level.
*/
int cman_wred_context_private_supported;
/** Maximum number of shared WRED contexts that any
* leaf node on this level can be part of. The value of
* zero indicates that shared WRED contexts are not
* supported by the leaf nodes on this level. When
* non-zero, it indicates there is at least one leaf
* node on this level that meets this condition, which
* may not be the case for all the leaf nodes on this
* level.
*/
uint32_t cman_wred_context_shared_n_max;
/** Mask of statistics counter types supported by the
* leaf nodes on this level. Every supported statistics
* counter type is supported by at least one leaf node
* on this level, which may not be true for all the leaf
* nodes on this level.
* @see enum rte_tm_stats_type
*/
uint64_t stats_mask;
} leaf;
};
};
/**
* Traffic manager node capabilities
*/
struct rte_tm_node_capabilities {
/** Private shaper support for the current node. */
int shaper_private_supported;
/** Dual rate shaping support for private shaper of current node.
* Valid only when private shaper is supported by the current node.
*/
int shaper_private_dual_rate_supported;
/** Minimum committed/peak rate (bytes per second) for private
* shaper of current node. Valid only when private shaper is supported
* by the current node.
*/
uint64_t shaper_private_rate_min;
/** Maximum committed/peak rate (bytes per second) for private
* shaper of current node. Valid only when private shaper is supported
* by the current node.
*/
uint64_t shaper_private_rate_max;
/** Shaper private packet mode supported. When non-zero, this parameter
* indicates private shaper of current node can be configured with
* packet mode. When configured in packet mode, committed/peak rate
* provided is interpreted in packets per second.
*/
int shaper_private_packet_mode_supported;
/** Shaper private byte mode supported. When non-zero, this parameter
* indicates private shaper of current node can be configured with
* byte mode. When configured in byte mode, committed/peak rate
* provided is interpreted in bytes per second.
*/
int shaper_private_byte_mode_supported;
/** Maximum number of shared shapers the current node can be part of.
* The value of zero indicates that shared shapers are not supported by
* the current node.
*/
uint32_t shaper_shared_n_max;
/** Shaper shared packet mode supported. When non-zero,
* this parameter indicates that current node can be part of
* shared shapers which work in packet mode.
*/
int shaper_shared_packet_mode_supported;
/** Shaper shared byte mode supported. When non-zero,
* this parameter indicates that current node can be part of
* shared shapers which work in byte mode.
*/
int shaper_shared_byte_mode_supported;
RTE_STD_C11
union {
/** Items valid only for non-leaf nodes. */
struct {
/** Maximum number of children nodes. */
uint32_t sched_n_children_max;
/** Maximum number of supported priority levels. The
* value of zero is invalid. The value of 1 indicates
* that only priority 0 is supported, which essentially
* means that Strict Priority (SP) algorithm is not
* supported.
*/
uint32_t sched_sp_n_priorities_max;
/** Maximum number of sibling nodes that can have the
* same priority at any given time, i.e. maximum size
* of the WFQ sibling node group. The value of zero
* is invalid. The value of 1 indicates that WFQ
* algorithm is not supported. The maximum value is
* *sched_n_children_max*.
*/
uint32_t sched_wfq_n_children_per_group_max;
/** Maximum number of priority levels that can have
* more than one child node at any given time, i.e.
* maximum number of WFQ sibling node groups that have
* two or more members. The value of zero states that
* WFQ algorithm is not supported. The value of 1
* indicates that (*sched_sp_n_priorities_max* - 1)
* priority levels have at most one child node, so there
* can be only one priority level with two or more
* sibling nodes making up a WFQ group. The maximum
* value is: min(floor(*sched_n_children_max* / 2),
* *sched_sp_n_priorities_max*).
*/
uint32_t sched_wfq_n_groups_max;
/** Maximum WFQ weight. The value of 1 indicates that
* all sibling nodes with same priority have the same
* WFQ weight, so WFQ is reduced to FQ.
*/
uint32_t sched_wfq_weight_max;
/** WFQ packet mode supported. When non-zero, this
* parameter indicates that current node supports packet
* mode for WFQ among its children. WFQ weights will be
* applied against packet count for scheduling children
* when configured appropriately.
*/
int sched_wfq_packet_mode_supported;
/** WFQ byte mode supported. When non-zero, this
* parameter indicates that current node supports byte
* mode for WFQ among its children. WFQ weights will be
* applied against bytes for scheduling children when
* configured appropriately.
*/
int sched_wfq_byte_mode_supported;
} nonleaf;
/** Items valid only for leaf nodes. */
struct {
/** WRED packet mode support for current node. */
int cman_wred_packet_mode_supported;
/** WRED byte mode support for current node. */
int cman_wred_byte_mode_supported;
/** Head drop algorithm support for current node. */
int cman_head_drop_supported;
/** Private WRED context support for current node. */
int cman_wred_context_private_supported;
/** Maximum number of shared WRED contexts the current
* node can be part of. The value of zero indicates that
* shared WRED contexts are not supported by the current
* node.
*/
uint32_t cman_wred_context_shared_n_max;
} leaf;
};
/** Mask of statistics counter types supported by the current node.
* @see enum rte_tm_stats_type
*/
uint64_t stats_mask;
};
/**
* Congestion management (CMAN) mode
*
* This is used for controlling the admission of packets into a packet queue or
* group of packet queues on congestion. On request of writing a new packet
* into the current queue while the queue is full, the *tail drop* algorithm
* drops the new packet while leaving the queue unmodified, as opposed to *head
* drop* algorithm, which drops the packet at the head of the queue (the oldest
* packet waiting in the queue) and admits the new packet at the tail of the
* queue.
*
* The *Random Early Detection (RED)* algorithm works by proactively dropping
* more and more input packets as the queue occupancy builds up. When the queue
* is full or almost full, RED effectively works as *tail drop*. The *Weighted
* RED* algorithm uses a separate set of RED thresholds for each packet color.
*/
enum rte_tm_cman_mode {
RTE_TM_CMAN_TAIL_DROP = 0, /**< Tail drop */
RTE_TM_CMAN_HEAD_DROP, /**< Head drop */
RTE_TM_CMAN_WRED, /**< Weighted Random Early Detection (WRED) */
};
/**
* Random Early Detection (RED) profile
*/
struct rte_tm_red_params {
/** Minimum queue threshold */
uint64_t min_th;
/** Maximum queue threshold */
uint64_t max_th;
/** Inverse of packet marking probability maximum value (maxp), i.e.
* maxp_inv = 1 / maxp
*/
uint16_t maxp_inv;
/** Negated log2 of queue weight (wq), i.e. wq = 1 / (2 ^ wq_log2) */
uint16_t wq_log2;
};
/**
* Weighted RED (WRED) profile
*
* Multiple WRED contexts can share the same WRED profile. Each leaf node with
* WRED enabled as its congestion management mode has zero or one private WRED
* context (only one leaf node using it) and/or zero, one or several shared
* WRED contexts (multiple leaf nodes use the same WRED context). A private
* WRED context is used to perform congestion management for a single leaf
* node, while a shared WRED context is used to perform congestion management
* for a group of leaf nodes.
*
* @see struct rte_tm_capabilities::cman_wred_packet_mode_supported
* @see struct rte_tm_capabilities::cman_wred_byte_mode_supported
*/
struct rte_tm_wred_params {
/** One set of RED parameters per packet color */
struct rte_tm_red_params red_params[RTE_COLORS];
/** When non-zero, the *min_th* and *max_th* thresholds are specified
* in packets (WRED packet mode). When zero, the *min_th* and *max_th*
* thresholds are specified in bytes (WRED byte mode)
*/
int packet_mode;
};
/**
* Token bucket
*/
struct rte_tm_token_bucket {
/** Token bucket rate (bytes per second or packets per second) */
uint64_t rate;
/** Token bucket size (bytes or packets), a.k.a. max burst size */
uint64_t size;
};
/**
* Shaper (rate limiter) profile
*
* Multiple shaper instances can share the same shaper profile. Each node has
* zero or one private shaper (only one node using it) and/or zero, one or
* several shared shapers (multiple nodes use the same shaper instance).
* A private shaper is used to perform traffic shaping for a single node, while
* a shared shaper is used to perform traffic shaping for a group of nodes.
*
* Single rate shapers use a single token bucket. A single rate shaper can be
* configured by setting the rate of the committed bucket to zero, which
* effectively disables this bucket. The peak bucket is used to limit the rate
* and the burst size for the current shaper.
*
* Dual rate shapers use both the committed and the peak token buckets. The
* rate of the peak bucket has to be bigger than zero, as well as greater than
* or equal to the rate of the committed bucket.
*
* @see struct rte_tm_capabilities::shaper_private_packet_mode_supported
* @see struct rte_tm_capabilities::shaper_private_byte_mode_supported
* @see struct rte_tm_capabilities::shaper_shared_packet_mode_supported
* @see struct rte_tm_capabilities::shaper_shared_byte_mode_supported
*/
struct rte_tm_shaper_params {
/** Committed token bucket */
struct rte_tm_token_bucket committed;
/** Peak token bucket */
struct rte_tm_token_bucket peak;
/** Signed value to be added to the length of each packet for the
* purpose of shaping. Can be used to correct the packet length with
* the framing overhead bytes that are also consumed on the wire (e.g.
* RTE_TM_ETH_FRAMING_OVERHEAD_FCS).
* This field is ignored when the profile enables packet mode.
*/
int32_t pkt_length_adjust;
/** When zero, the byte mode is enabled for the current profile, so the
* *rate* and *size* fields in both the committed and peak token buckets
* are specified in bytes per second and bytes, respectively.
* When non-zero, the packet mode is enabled for the current profile,
* so the *rate* and *size* fields in both the committed and peak token
* buckets are specified in packets per second and packets,
* respectively.
*/
int packet_mode;
};
/**
* Node parameters
*
* Each non-leaf node has multiple inputs (its children nodes) and single output
* (which is input to its parent node). It arbitrates its inputs using Strict
* Priority (SP) and Weighted Fair Queuing (WFQ) algorithms to schedule input
* packets to its output while observing its shaping (rate limiting)
* constraints.
*
* Algorithms such as Weighted Round Robin (WRR), Byte-level WRR, Deficit WRR
* (DWRR), etc. are considered approximations of the WFQ ideal and are
* assimilated to WFQ, although an associated implementation-dependent trade-off
* on accuracy, performance and resource usage might exist.
*
* Children nodes with different priorities are scheduled using the SP algorithm
* based on their priority, with zero (0) as the highest priority. Children with
* the same priority are scheduled using the WFQ algorithm according to their
* weights. The WFQ weight of a given child node is relative to the sum of the
* weights of all its sibling nodes that have the same priority, with one (1) as
* the lowest weight. For each SP priority, the WFQ weight mode can be set as
* either byte-based or packet-based.
*
* Each leaf node sits on top of a TX queue of the current Ethernet port. Hence,
* the leaf nodes are predefined, with their node IDs set to 0 .. (N-1), where N
* is the number of TX queues configured for the current Ethernet port. The
* non-leaf nodes have their IDs generated by the application.
*/
struct rte_tm_node_params {
/** Shaper profile for the private shaper. The absence of the private
* shaper for the current node is indicated by setting this parameter
* to RTE_TM_SHAPER_PROFILE_ID_NONE.
*/
uint32_t shaper_profile_id;
/** User allocated array of valid shared shaper IDs. */
uint32_t *shared_shaper_id;
/** Number of shared shaper IDs in the *shared_shaper_id* array. */
uint32_t n_shared_shapers;
RTE_STD_C11
union {
/** Parameters only valid for non-leaf nodes. */
struct {
/** WFQ weight mode for each SP priority. When NULL, it
* indicates that WFQ is to be used for all priorities.
* When non-NULL, it points to a pre-allocated array of
* *n_sp_priorities* values, with non-zero value for
* byte-mode and zero for packet-mode.
* @see struct rte_tm_node_capabilities::sched_wfq_packet_mode_supported
* @see struct rte_tm_node_capabilities::sched_wfq_byte_mode_supported
*/
int *wfq_weight_mode;
/** Number of SP priorities. */
uint32_t n_sp_priorities;
} nonleaf;
/** Parameters only valid for leaf nodes. */
struct {
/** Congestion management mode */
enum rte_tm_cman_mode cman;
/** WRED parameters (only valid when *cman* is set to
* WRED).
*/
struct {
/** WRED profile for private WRED context. The
* absence of a private WRED context for the
* current leaf node is indicated by value
* RTE_TM_WRED_PROFILE_ID_NONE.
*/
uint32_t wred_profile_id;
/** User allocated array of shared WRED context
* IDs. When set to NULL, it indicates that the
* current leaf node should not currently be
* part of any shared WRED contexts.
*/
uint32_t *shared_wred_context_id;
/** Number of elements in the
* *shared_wred_context_id* array. Only valid
* when *shared_wred_context_id* is non-NULL,
* in which case it should be non-zero.
*/
uint32_t n_shared_wred_contexts;
} wred;
} leaf;
};
/** Mask of statistics counter types to be enabled for this node. This
* needs to be a subset of the statistics counter types available for
* the current node. Any statistics counter type not included in this
* set is to be disabled for the current node.
* @see enum rte_tm_stats_type
*/
uint64_t stats_mask;
};
/**
* Verbose error types.
*
* Most of them provide the type of the object referenced by struct
* rte_tm_error::cause.
*/
enum rte_tm_error_type {
RTE_TM_ERROR_TYPE_NONE, /**< No error. */
RTE_TM_ERROR_TYPE_UNSPECIFIED, /**< Cause unspecified. */
RTE_TM_ERROR_TYPE_CAPABILITIES,
RTE_TM_ERROR_TYPE_LEVEL_ID,
RTE_TM_ERROR_TYPE_WRED_PROFILE,
RTE_TM_ERROR_TYPE_WRED_PROFILE_GREEN,
RTE_TM_ERROR_TYPE_WRED_PROFILE_YELLOW,
RTE_TM_ERROR_TYPE_WRED_PROFILE_RED,
RTE_TM_ERROR_TYPE_WRED_PROFILE_ID,
RTE_TM_ERROR_TYPE_SHARED_WRED_CONTEXT_ID,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_RATE,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_SIZE,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PEAK_RATE,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PEAK_SIZE,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PKT_ADJUST_LEN,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PACKET_MODE,
RTE_TM_ERROR_TYPE_SHAPER_PROFILE_ID,
RTE_TM_ERROR_TYPE_SHARED_SHAPER_ID,
RTE_TM_ERROR_TYPE_NODE_PARENT_NODE_ID,
RTE_TM_ERROR_TYPE_NODE_PRIORITY,
RTE_TM_ERROR_TYPE_NODE_WEIGHT,
RTE_TM_ERROR_TYPE_NODE_PARAMS,
RTE_TM_ERROR_TYPE_NODE_PARAMS_SHAPER_PROFILE_ID,
RTE_TM_ERROR_TYPE_NODE_PARAMS_SHARED_SHAPER_ID,
RTE_TM_ERROR_TYPE_NODE_PARAMS_N_SHARED_SHAPERS,
RTE_TM_ERROR_TYPE_NODE_PARAMS_WFQ_WEIGHT_MODE,
RTE_TM_ERROR_TYPE_NODE_PARAMS_N_SP_PRIORITIES,
RTE_TM_ERROR_TYPE_NODE_PARAMS_CMAN,
RTE_TM_ERROR_TYPE_NODE_PARAMS_WRED_PROFILE_ID,
RTE_TM_ERROR_TYPE_NODE_PARAMS_SHARED_WRED_CONTEXT_ID,
RTE_TM_ERROR_TYPE_NODE_PARAMS_N_SHARED_WRED_CONTEXTS,
RTE_TM_ERROR_TYPE_NODE_PARAMS_STATS,
RTE_TM_ERROR_TYPE_NODE_ID,
};
/**
* Verbose error structure definition.
*
* This object is normally allocated by applications and set by PMDs, the
* message points to a constant string which does not need to be freed by
* the application, however its pointer can be considered valid only as long
* as its associated DPDK port remains configured. Closing the underlying
* device or unloading the PMD invalidates it.
*
* Both cause and message may be NULL regardless of the error type.
*/
struct rte_tm_error {
enum rte_tm_error_type type; /**< Cause field and error type. */
const void *cause; /**< Object responsible for the error. */
const char *message; /**< Human-readable error message. */
};
/**
* Traffic manager get number of leaf nodes
*
* Each leaf node sits on on top of a TX queue of the current Ethernet port.
* Therefore, the set of leaf nodes is predefined, their number is always equal
* to N (where N is the number of TX queues configured for the current port)
* and their IDs are 0 .. (N-1).
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[out] n_leaf_nodes
* Number of leaf nodes for the current port.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*/
__rte_experimental
int
rte_tm_get_number_of_leaf_nodes(uint16_t port_id,
uint32_t *n_leaf_nodes,
struct rte_tm_error *error);
/**
* Traffic manager node ID validate and type (i.e. leaf or non-leaf) get
*
* The leaf nodes have predefined IDs in the range of 0 .. (N-1), where N is
* the number of TX queues of the current Ethernet port. The non-leaf nodes
* have their IDs generated by the application outside of the above range,
* which is reserved for leaf nodes.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID value. Needs to be valid.
* @param[out] is_leaf
* Set to non-zero value when node is leaf and to zero otherwise (non-leaf).
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*/
__rte_experimental
int
rte_tm_node_type_get(uint16_t port_id,
uint32_t node_id,
int *is_leaf,
struct rte_tm_error *error);
/**
* Traffic manager capabilities get
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[out] cap
* Traffic manager capabilities. Needs to be pre-allocated and valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*/
__rte_experimental
int
rte_tm_capabilities_get(uint16_t port_id,
struct rte_tm_capabilities *cap,
struct rte_tm_error *error);
/**
* Traffic manager level capabilities get
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] level_id
* The hierarchy level identifier. The value of 0 identifies the level of the
* root node.
* @param[out] cap
* Traffic manager level capabilities. Needs to be pre-allocated and valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*/
__rte_experimental
int
rte_tm_level_capabilities_get(uint16_t port_id,
uint32_t level_id,
struct rte_tm_level_capabilities *cap,
struct rte_tm_error *error);
/**
* Traffic manager node capabilities get
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[out] cap
* Traffic manager node capabilities. Needs to be pre-allocated and valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*/
__rte_experimental
int
rte_tm_node_capabilities_get(uint16_t port_id,
uint32_t node_id,
struct rte_tm_node_capabilities *cap,
struct rte_tm_error *error);
/**
* Traffic manager WRED profile add
*
* Create a new WRED profile with ID set to *wred_profile_id*. The new profile
* is used to create one or several WRED contexts.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] wred_profile_id
* WRED profile ID for the new profile. Needs to be unused.
* @param[in] profile
* WRED profile parameters. Needs to be pre-allocated and valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::cman_wred_context_n_max
*/
__rte_experimental
int
rte_tm_wred_profile_add(uint16_t port_id,
uint32_t wred_profile_id,
struct rte_tm_wred_params *profile,
struct rte_tm_error *error);
/**
* Traffic manager WRED profile delete
*
* Delete an existing WRED profile. This operation fails when there is
* currently at least one user (i.e. WRED context) of this WRED profile.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] wred_profile_id
* WRED profile ID. Needs to be the valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::cman_wred_context_n_max
*/
__rte_experimental
int
rte_tm_wred_profile_delete(uint16_t port_id,
uint32_t wred_profile_id,
struct rte_tm_error *error);
/**
* Traffic manager shared WRED context add or update
*
* When *shared_wred_context_id* is invalid, a new WRED context with this ID is
* created by using the WRED profile identified by *wred_profile_id*.
*
* When *shared_wred_context_id* is valid, this WRED context is no longer using
* the profile previously assigned to it and is updated to use the profile
* identified by *wred_profile_id*.
*
* A valid shared WRED context can be assigned to several hierarchy leaf nodes
* configured to use WRED as the congestion management mode.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] shared_wred_context_id
* Shared WRED context ID
* @param[in] wred_profile_id
* WRED profile ID. Needs to be the valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::cman_wred_context_shared_n_max
*/
__rte_experimental
int
rte_tm_shared_wred_context_add_update(uint16_t port_id,
uint32_t shared_wred_context_id,
uint32_t wred_profile_id,
struct rte_tm_error *error);
/**
* Traffic manager shared WRED context delete
*
* Delete an existing shared WRED context. This operation fails when there is
* currently at least one user (i.e. hierarchy leaf node) of this shared WRED
* context.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] shared_wred_context_id
* Shared WRED context ID. Needs to be the valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::cman_wred_context_shared_n_max
*/
__rte_experimental
int
rte_tm_shared_wred_context_delete(uint16_t port_id,
uint32_t shared_wred_context_id,
struct rte_tm_error *error);
/**
* Traffic manager shaper profile add
*
* Create a new shaper profile with ID set to *shaper_profile_id*. The new
* shaper profile is used to create one or several shapers.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] shaper_profile_id
* Shaper profile ID for the new profile. Needs to be unused.
* @param[in] profile
* Shaper profile parameters. Needs to be pre-allocated and valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::shaper_n_max
*/
__rte_experimental
int
rte_tm_shaper_profile_add(uint16_t port_id,
uint32_t shaper_profile_id,
struct rte_tm_shaper_params *profile,
struct rte_tm_error *error);
/**
* Traffic manager shaper profile delete
*
* Delete an existing shaper profile. This operation fails when there is
* currently at least one user (i.e. shaper) of this shaper profile.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] shaper_profile_id
* Shaper profile ID. Needs to be the valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::shaper_n_max
*/
__rte_experimental
int
rte_tm_shaper_profile_delete(uint16_t port_id,
uint32_t shaper_profile_id,
struct rte_tm_error *error);
/**
* Traffic manager shared shaper add or update
*
* When *shared_shaper_id* is not a valid shared shaper ID, a new shared shaper
* with this ID is created using the shaper profile identified by
* *shaper_profile_id*.
*
* When *shared_shaper_id* is a valid shared shaper ID, this shared shaper is
* no longer using the shaper profile previously assigned to it and is updated
* to use the shaper profile identified by *shaper_profile_id*.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] shared_shaper_id
* Shared shaper ID
* @param[in] shaper_profile_id
* Shaper profile ID. Needs to be the valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::shaper_shared_n_max
*/
__rte_experimental
int
rte_tm_shared_shaper_add_update(uint16_t port_id,
uint32_t shared_shaper_id,
uint32_t shaper_profile_id,
struct rte_tm_error *error);
/**
* Traffic manager shared shaper delete
*
* Delete an existing shared shaper. This operation fails when there is
* currently at least one user (i.e. hierarchy node) of this shared shaper.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] shared_shaper_id
* Shared shaper ID. Needs to be the valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::shaper_shared_n_max
*/
__rte_experimental
int
rte_tm_shared_shaper_delete(uint16_t port_id,
uint32_t shared_shaper_id,
struct rte_tm_error *error);
/**
* Traffic manager node add
*
* Create new node and connect it as child of an existing node. The new node is
* further identified by *node_id*, which needs to be unused by any of the
* existing nodes. The parent node is identified by *parent_node_id*, which
* needs to be the valid ID of an existing non-leaf node. The parent node is
* going to use the provided SP *priority* and WFQ *weight* to schedule its new
* child node.
*
* This function has to be called for both leaf and non-leaf nodes. In the case
* of leaf nodes (i.e. *node_id* is within the range of 0 .. (N-1), with N as
* the number of configured TX queues of the current port), the leaf node is
* configured rather than created (as the set of leaf nodes is predefined) and
* it is also connected as child of an existing node.
*
* The first node that is added becomes the root node and all the nodes that
* are subsequently added have to be added as descendants of the root node. The
* parent of the root node has to be specified as RTE_TM_NODE_ID_NULL and there
* can only be one node with this parent ID (i.e. the root node). Further
* restrictions for root node: needs to be non-leaf, its private shaper profile
* needs to be valid and single rate, cannot use any shared shapers.
*
* When called before rte_tm_hierarchy_commit() invocation, this function is
* typically used to define the initial start-up hierarchy for the port.
* Provided that dynamic hierarchy updates are supported by the current port (as
* advertised in the port capability set), this function can be also called
* after the rte_tm_hierarchy_commit() invocation.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be unused by any of the existing nodes.
* @param[in] parent_node_id
* Parent node ID. Needs to be the valid.
* @param[in] priority
* Node priority. The highest node priority is zero. Used by the SP algorithm
* running on the parent of the current node for scheduling this child node.
* @param[in] weight
* Node weight. The node weight is relative to the weight sum of all siblings
* that have the same priority. The lowest weight is one. Used by the WFQ
* algorithm running on the parent of the current node for scheduling this
* child node.
* @param[in] level_id
* Level ID that should be met by this node. The hierarchy level of the
* current node is already fully specified through its parent node (i.e. the
* level of this node is equal to the level of its parent node plus one),
* therefore the reason for providing this parameter is to enable the
* application to perform step-by-step checking of the node level during
* successive invocations of this function. When not desired, this check can
* be disabled by assigning value RTE_TM_NODE_LEVEL_ID_ANY to this parameter.
* @param[in] params
* Node parameters. Needs to be pre-allocated and valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see rte_tm_hierarchy_commit()
* @see RTE_TM_UPDATE_NODE_ADD_DELETE
* @see RTE_TM_NODE_LEVEL_ID_ANY
* @see struct rte_tm_capabilities
*/
__rte_experimental
int
rte_tm_node_add(uint16_t port_id,
uint32_t node_id,
uint32_t parent_node_id,
uint32_t priority,
uint32_t weight,
uint32_t level_id,
struct rte_tm_node_params *params,
struct rte_tm_error *error);
/**
* Traffic manager node delete
*
* Delete an existing node. This operation fails when this node currently has
* at least one user (i.e. child node).
*
* When called before rte_tm_hierarchy_commit() invocation, this function is
* typically used to define the initial start-up hierarchy for the port.
* Provided that dynamic hierarchy updates are supported by the current port (as
* advertised in the port capability set), this function can be also called
* after the rte_tm_hierarchy_commit() invocation.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see RTE_TM_UPDATE_NODE_ADD_DELETE
*/
__rte_experimental
int
rte_tm_node_delete(uint16_t port_id,
uint32_t node_id,
struct rte_tm_error *error);
/**
* Traffic manager node suspend
*
* Suspend an existing node. While the node is in suspended state, no packet is
* scheduled from this node and its descendants. The node exits the suspended
* state through the node resume operation.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see rte_tm_node_resume()
* @see RTE_TM_UPDATE_NODE_SUSPEND_RESUME
*/
__rte_experimental
int
rte_tm_node_suspend(uint16_t port_id,
uint32_t node_id,
struct rte_tm_error *error);
/**
* Traffic manager node resume
*
* Resume an existing node that is currently in suspended state. The node
* entered the suspended state as result of a previous node suspend operation.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see rte_tm_node_suspend()
* @see RTE_TM_UPDATE_NODE_SUSPEND_RESUME
*/
__rte_experimental
int
rte_tm_node_resume(uint16_t port_id,
uint32_t node_id,
struct rte_tm_error *error);
/**
* Traffic manager hierarchy commit
*
* This function is called during the port initialization phase (before the
* Ethernet port is started) to freeze the start-up hierarchy.
*
* This function typically performs the following steps:
* a) It validates the start-up hierarchy that was previously defined for the
* current port through successive rte_tm_node_add() invocations;
* b) Assuming successful validation, it performs all the necessary port
* specific configuration operations to install the specified hierarchy on
* the current port, with immediate effect once the port is started.
*
* This function fails when the currently configured hierarchy is not supported
* by the Ethernet port, in which case the user can abort or try out another
* hierarchy configuration (e.g. a hierarchy with less leaf nodes), which can be
* build from scratch (when *clear_on_fail* is enabled) or by modifying the
* existing hierarchy configuration (when *clear_on_fail* is disabled).
*
* Note that this function can still fail due to other causes (e.g. not enough
* memory available in the system, etc), even though the specified hierarchy is
* supported in principle by the current port.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] clear_on_fail
* On function call failure, hierarchy is cleared when this parameter is
* non-zero and preserved when this parameter is equal to zero.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see rte_tm_node_add()
* @see rte_tm_node_delete()
*/
__rte_experimental
int
rte_tm_hierarchy_commit(uint16_t port_id,
int clear_on_fail,
struct rte_tm_error *error);
/**
* Traffic manager node parent update
*
* This function may be used to move a node and its children to a different
* parent. Additionally, if the new parent is the same as the current parent,
* this function will update the priority/weight of an existing node.
*
* Restriction for root node: its parent cannot be changed.
*
* This function can only be called after the rte_tm_hierarchy_commit()
* invocation. Its success depends on the port support for this operation, as
* advertised through the port capability set.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[in] parent_node_id
* Node ID for the new parent. Needs to be valid.
* @param[in] priority
* Node priority. The highest node priority is zero. Used by the SP algorithm
* running on the parent of the current node for scheduling this child node.
* @param[in] weight
* Node weight. The node weight is relative to the weight sum of all siblings
* that have the same priority. The lowest weight is zero. Used by the WFQ
* algorithm running on the parent of the current node for scheduling this
* child node.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see RTE_TM_UPDATE_NODE_PARENT_KEEP_LEVEL
* @see RTE_TM_UPDATE_NODE_PARENT_CHANGE_LEVEL
*/
__rte_experimental
int
rte_tm_node_parent_update(uint16_t port_id,
uint32_t node_id,
uint32_t parent_node_id,
uint32_t priority,
uint32_t weight,
struct rte_tm_error *error);
/**
* Traffic manager node private shaper update
*
* Restriction for the root node: its private shaper profile needs to be valid
* and single rate.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[in] shaper_profile_id
* Shaper profile ID for the private shaper of the current node. Needs to be
* either valid shaper profile ID or RTE_TM_SHAPER_PROFILE_ID_NONE, with
* the latter disabling the private shaper of the current node.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::shaper_private_n_max
*/
__rte_experimental
int
rte_tm_node_shaper_update(uint16_t port_id,
uint32_t node_id,
uint32_t shaper_profile_id,
struct rte_tm_error *error);
/**
* Traffic manager node shared shapers update
*
* Restriction for root node: cannot use any shared rate shapers.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[in] shared_shaper_id
* Shared shaper ID. Needs to be valid.
* @param[in] add
* Set to non-zero value to add this shared shaper to current node or to zero
* to delete this shared shaper from current node.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::shaper_shared_n_max
*/
__rte_experimental
int
rte_tm_node_shared_shaper_update(uint16_t port_id,
uint32_t node_id,
uint32_t shared_shaper_id,
int add,
struct rte_tm_error *error);
/**
* Traffic manager node enabled statistics counters update
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[in] stats_mask
* Mask of statistics counter types to be enabled for the current node. This
* needs to be a subset of the statistics counter types available for the
* current node. Any statistics counter type not included in this set is to
* be disabled for the current node.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see enum rte_tm_stats_type
* @see RTE_TM_UPDATE_NODE_STATS
*/
__rte_experimental
int
rte_tm_node_stats_update(uint16_t port_id,
uint32_t node_id,
uint64_t stats_mask,
struct rte_tm_error *error);
/**
* Traffic manager node WFQ weight mode update
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid non-leaf node ID.
* @param[in] wfq_weight_mode
* WFQ weight mode for each SP priority. When NULL, it indicates that WFQ is
* to be used for all priorities. When non-NULL, it points to a pre-allocated
* array of *n_sp_priorities* values, with non-zero value for byte-mode and
* zero for packet-mode.
* @param[in] n_sp_priorities
* Number of SP priorities.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see RTE_TM_UPDATE_NODE_WFQ_WEIGHT_MODE
* @see RTE_TM_UPDATE_NODE_N_SP_PRIORITIES
*/
__rte_experimental
int
rte_tm_node_wfq_weight_mode_update(uint16_t port_id,
uint32_t node_id,
int *wfq_weight_mode,
uint32_t n_sp_priorities,
struct rte_tm_error *error);
/**
* Traffic manager node congestion management mode update
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid leaf node ID.
* @param[in] cman
* Congestion management mode.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see RTE_TM_UPDATE_NODE_CMAN
*/
__rte_experimental
int
rte_tm_node_cman_update(uint16_t port_id,
uint32_t node_id,
enum rte_tm_cman_mode cman,
struct rte_tm_error *error);
/**
* Traffic manager node private WRED context update
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid leaf node ID.
* @param[in] wred_profile_id
* WRED profile ID for the private WRED context of the current node. Needs to
* be either valid WRED profile ID or RTE_TM_WRED_PROFILE_ID_NONE, with the
* latter disabling the private WRED context of the current node.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::cman_wred_context_private_n_max
*/
__rte_experimental
int
rte_tm_node_wred_context_update(uint16_t port_id,
uint32_t node_id,
uint32_t wred_profile_id,
struct rte_tm_error *error);
/**
* Traffic manager node shared WRED context update
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid leaf node ID.
* @param[in] shared_wred_context_id
* Shared WRED context ID. Needs to be valid.
* @param[in] add
* Set to non-zero value to add this shared WRED context to current node or
* to zero to delete this shared WRED context from current node.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::cman_wred_context_shared_n_max
*/
__rte_experimental
int
rte_tm_node_shared_wred_context_update(uint16_t port_id,
uint32_t node_id,
uint32_t shared_wred_context_id,
int add,
struct rte_tm_error *error);
/**
* Traffic manager node statistics counters read
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] node_id
* Node ID. Needs to be valid.
* @param[out] stats
* When non-NULL, it contains the current value for the statistics counters
* enabled for the current node.
* @param[out] stats_mask
* When non-NULL, it contains the mask of statistics counter types that are
* currently enabled for this node, indicating which of the counters
* retrieved with the *stats* structure are valid.
* @param[in] clear
* When this parameter has a non-zero value, the statistics counters are
* cleared (i.e. set to zero) immediately after they have been read,
* otherwise the statistics counters are left untouched.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see enum rte_tm_stats_type
*/
__rte_experimental
int
rte_tm_node_stats_read(uint16_t port_id,
uint32_t node_id,
struct rte_tm_node_stats *stats,
uint64_t *stats_mask,
int clear,
struct rte_tm_error *error);
/**
* Traffic manager packet marking - VLAN DEI (IEEE 802.1Q)
*
* IEEE 802.1p maps the traffic class to the VLAN Priority Code Point (PCP)
* field (3 bits), while IEEE 802.1q maps the drop priority to the VLAN Drop
* Eligible Indicator (DEI) field (1 bit), which was previously named Canonical
* Format Indicator (CFI).
*
* All VLAN frames of a given color get their DEI bit set if marking is enabled
* for this color; otherwise, their DEI bit is left as is (either set or not).
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] mark_green
* Set to non-zero value to enable marking of green packets and to zero to
* disable it.
* @param[in] mark_yellow
* Set to non-zero value to enable marking of yellow packets and to zero to
* disable it.
* @param[in] mark_red
* Set to non-zero value to enable marking of red packets and to zero to
* disable it.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::mark_vlan_dei_supported
*/
__rte_experimental
int
rte_tm_mark_vlan_dei(uint16_t port_id,
int mark_green,
int mark_yellow,
int mark_red,
struct rte_tm_error *error);
/**
* Traffic manager packet marking - IPv4 / IPv6 ECN (IETF RFC 3168)
*
* IETF RFCs 2474 and 3168 reorganize the IPv4 Type of Service (TOS) field
* (8 bits) and the IPv6 Traffic Class (TC) field (8 bits) into Differentiated
* Services Codepoint (DSCP) field (6 bits) and Explicit Congestion
* Notification (ECN) field (2 bits). The DSCP field is typically used to
* encode the traffic class and/or drop priority (RFC 2597), while the ECN
* field is used by RFC 3168 to implement a congestion notification mechanism
* to be leveraged by transport layer protocols such as TCP and SCTP that have
* congestion control mechanisms.
*
* When congestion is experienced, as alternative to dropping the packet,
* routers can change the ECN field of input packets from 2'b01 or 2'b10
* (values indicating that source endpoint is ECN-capable) to 2'b11 (meaning
* that congestion is experienced). The destination endpoint can use the
* ECN-Echo (ECE) TCP flag to relay the congestion indication back to the
* source endpoint, which acknowledges it back to the destination endpoint with
* the Congestion Window Reduced (CWR) TCP flag.
*
* All IPv4/IPv6 packets of a given color with ECN set to 2’b01 or 2’b10
* carrying TCP or SCTP have their ECN set to 2’b11 if the marking feature is
* enabled for the current color, otherwise the ECN field is left as is.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] mark_green
* Set to non-zero value to enable marking of green packets and to zero to
* disable it.
* @param[in] mark_yellow
* Set to non-zero value to enable marking of yellow packets and to zero to
* disable it.
* @param[in] mark_red
* Set to non-zero value to enable marking of red packets and to zero to
* disable it.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::mark_ip_ecn_tcp_supported
* @see struct rte_tm_capabilities::mark_ip_ecn_sctp_supported
*/
__rte_experimental
int
rte_tm_mark_ip_ecn(uint16_t port_id,
int mark_green,
int mark_yellow,
int mark_red,
struct rte_tm_error *error);
/**
* Traffic manager packet marking - IPv4 / IPv6 DSCP (IETF RFC 2597)
*
* IETF RFC 2597 maps the traffic class and the drop priority to the IPv4/IPv6
* Differentiated Services Codepoint (DSCP) field (6 bits). Here are the DSCP
* values proposed by this RFC:
*
* <pre> Class 1 Class 2 Class 3 Class 4 </pre>
* <pre> +----------+----------+----------+----------+</pre>
* <pre>Low Drop Prec | 001010 | 010010 | 011010 | 100010 |</pre>
* <pre>Medium Drop Prec | 001100 | 010100 | 011100 | 100100 |</pre>
* <pre>High Drop Prec | 001110 | 010110 | 011110 | 100110 |</pre>
* <pre> +----------+----------+----------+----------+</pre>
*
* There are 4 traffic classes (classes 1 .. 4) encoded by DSCP bits 1 and 2,
* as well as 3 drop priorities (low/medium/high) encoded by DSCP bits 3 and 4.
*
* All IPv4/IPv6 packets have their color marked into DSCP bits 3 and 4 as
* follows: green mapped to Low Drop Precedence (2’b01), yellow to Medium
* (2’b10) and red to High (2’b11). Marking needs to be explicitly enabled
* for each color; when not enabled for a given color, the DSCP field of all
* packets with that color is left as is.
*
* @param[in] port_id
* The port identifier of the Ethernet device.
* @param[in] mark_green
* Set to non-zero value to enable marking of green packets and to zero to
* disable it.
* @param[in] mark_yellow
* Set to non-zero value to enable marking of yellow packets and to zero to
* disable it.
* @param[in] mark_red
* Set to non-zero value to enable marking of red packets and to zero to
* disable it.
* @param[out] error
* Error details. Filled in only on error, when not NULL.
* @return
* 0 on success, non-zero error code otherwise.
*
* @see struct rte_tm_capabilities::mark_ip_dscp_supported
*/
__rte_experimental
int
rte_tm_mark_ip_dscp(uint16_t port_id,
int mark_green,
int mark_yellow,
int mark_red,
struct rte_tm_error *error);
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_RTE_TM_H__ */
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