/*- * BSD LICENSE * * Copyright(c) 2017 Intel Corporation. * Copyright(c) 2017 Cavium. * Copyright(c) 2017 NXP. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #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: this API may change without prior notice */ #include #include #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 /** * Color */ enum rte_tm_color { RTE_TM_GREEN = 0, /**< Green */ RTE_TM_YELLOW, /**< Yellow */ RTE_TM_RED, /**< Red */ RTE_TM_COLORS /**< Number of colors */ }; /** * 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_TM_COLORS]; /** Number of bytes dropped by current leaf node per each * color. */ uint64_t n_bytes_dropped[RTE_TM_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; /** 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; /** 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; /** WRED packet mode support. When non-zero, this parameter indicates * that there is atleast 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 atleast 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_TM_COLORS]; /** Support for IPv4/IPv6 ECN marking of TCP packets (per color). */ int mark_ip_ecn_tcp_supported[RTE_TM_COLORS]; /** Support for IPv4/IPv6 ECN marking of SCTP packets (per color). */ int mark_ip_ecn_sctp_supported[RTE_TM_COLORS]; /** Support for IPv4/IPv6 DSCP packet marking (per color). */ int mark_ip_dscp_supported[RTE_TM_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; /** 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; /** 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; /** 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; /** 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; /** WRED packet mode support. When non-zero, this * parameter indicates that there is atleast 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 atleast 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; /** 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; 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; } 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_TM_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) */ uint64_t rate; /** Token bucket size (bytes), 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. */ 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). */ int32_t pkt_length_adjust; }; /** * 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. */ 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_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. */ 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. */ 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. */ 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. */ 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. */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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() */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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: * * 
                   Class 1    Class 2    Class 3    Class 4
* 
                 +----------+----------+----------+----------+
* 
Low Drop Prec    |  001010  |  010010  |  011010  |  100010  |
* 
Medium Drop Prec |  001100  |  010100  |  011100  |  100100  |
* 
High Drop Prec   |  001110  |  010110  |  011110  |  100110  |
* 
                 +----------+----------+----------+----------+
* * 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 */ 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__ */