From bd7b62d7e05daea20b81da3e26d8210b4dacf9ba Mon Sep 17 00:00:00 2001 From: Satha Rao Date: Wed, 22 Sep 2021 02:11:47 -0400 Subject: [PATCH] net/cnxk: add TM capabilities and queue rate limit handlers Initial version of TM implementation added basic infrastructure, TM node_get, capabilities operations and rate limit queue operation. Signed-off-by: Satha Rao Acked-by: Nithin Dabilpuram --- drivers/net/cnxk/cnxk_ethdev.c | 2 + drivers/net/cnxk/cnxk_ethdev.h | 3 + drivers/net/cnxk/cnxk_tm.c | 322 +++++++++++++++++++++++++++++++++ drivers/net/cnxk/cnxk_tm.h | 18 ++ drivers/net/cnxk/meson.build | 1 + 5 files changed, 346 insertions(+) create mode 100644 drivers/net/cnxk/cnxk_tm.c create mode 100644 drivers/net/cnxk/cnxk_tm.h diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c index 7152dcd002..8629193d50 100644 --- a/drivers/net/cnxk/cnxk_ethdev.c +++ b/drivers/net/cnxk/cnxk_ethdev.c @@ -1276,6 +1276,8 @@ struct eth_dev_ops cnxk_eth_dev_ops = { .rss_hash_update = cnxk_nix_rss_hash_update, .rss_hash_conf_get = cnxk_nix_rss_hash_conf_get, .set_mc_addr_list = cnxk_nix_mc_addr_list_configure, + .set_queue_rate_limit = cnxk_nix_tm_set_queue_rate_limit, + .tm_ops_get = cnxk_nix_tm_ops_get, }; static int diff --git a/drivers/net/cnxk/cnxk_ethdev.h b/drivers/net/cnxk/cnxk_ethdev.h index 27920c84f2..10e05e6b5e 100644 --- a/drivers/net/cnxk/cnxk_ethdev.h +++ b/drivers/net/cnxk/cnxk_ethdev.h @@ -330,6 +330,9 @@ int cnxk_nix_tsc_convert(struct cnxk_eth_dev *dev); int cnxk_nix_read_clock(struct rte_eth_dev *eth_dev, uint64_t *clock); uint64_t cnxk_nix_rxq_mbuf_setup(struct cnxk_eth_dev *dev); +int cnxk_nix_tm_ops_get(struct rte_eth_dev *eth_dev, void *ops); +int cnxk_nix_tm_set_queue_rate_limit(struct rte_eth_dev *eth_dev, + uint16_t queue_idx, uint16_t tx_rate); /* RSS */ uint32_t cnxk_rss_ethdev_to_nix(struct cnxk_eth_dev *dev, uint64_t ethdev_rss, diff --git a/drivers/net/cnxk/cnxk_tm.c b/drivers/net/cnxk/cnxk_tm.c new file mode 100644 index 0000000000..87fd8bec92 --- /dev/null +++ b/drivers/net/cnxk/cnxk_tm.c @@ -0,0 +1,322 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(C) 2021 Marvell. + */ +#include +#include +#include + +static int +cnxk_nix_tm_node_type_get(struct rte_eth_dev *eth_dev, uint32_t node_id, + int *is_leaf, struct rte_tm_error *error) +{ + struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev); + struct roc_nix *nix = &dev->nix; + struct roc_nix_tm_node *node; + + if (is_leaf == NULL) { + error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED; + return -EINVAL; + } + + node = roc_nix_tm_node_get(nix, node_id); + if (node_id == RTE_TM_NODE_ID_NULL || !node) { + error->type = RTE_TM_ERROR_TYPE_NODE_ID; + return -EINVAL; + } + + if (roc_nix_tm_lvl_is_leaf(nix, node->lvl)) + *is_leaf = true; + else + *is_leaf = false; + + return 0; +} + +static int +cnxk_nix_tm_capa_get(struct rte_eth_dev *eth_dev, + struct rte_tm_capabilities *cap, + struct rte_tm_error *error) +{ + struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev); + int rc, max_nr_nodes = 0, i, n_lvl; + struct roc_nix *nix = &dev->nix; + uint16_t schq[ROC_TM_LVL_MAX]; + + memset(cap, 0, sizeof(*cap)); + + rc = roc_nix_tm_rsrc_count(nix, schq); + if (rc) { + error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED; + error->message = "unexpected fatal error"; + return rc; + } + + for (i = 0; i < NIX_TXSCH_LVL_TL1; i++) + max_nr_nodes += schq[i]; + + cap->n_nodes_max = max_nr_nodes + dev->nb_txq; + + n_lvl = roc_nix_tm_lvl_cnt_get(nix); + /* Consider leaf level */ + cap->n_levels_max = n_lvl + 1; + cap->non_leaf_nodes_identical = 1; + cap->leaf_nodes_identical = 1; + + /* Shaper Capabilities */ + cap->shaper_private_n_max = max_nr_nodes; + cap->shaper_n_max = max_nr_nodes; + cap->shaper_private_dual_rate_n_max = max_nr_nodes; + cap->shaper_private_rate_min = NIX_TM_MIN_SHAPER_RATE / 8; + cap->shaper_private_rate_max = NIX_TM_MAX_SHAPER_RATE / 8; + cap->shaper_private_packet_mode_supported = 1; + cap->shaper_private_byte_mode_supported = 1; + cap->shaper_pkt_length_adjust_min = NIX_TM_LENGTH_ADJUST_MIN; + cap->shaper_pkt_length_adjust_max = NIX_TM_LENGTH_ADJUST_MAX; + + /* Schedule Capabilities */ + cap->sched_n_children_max = schq[n_lvl - 1]; + cap->sched_sp_n_priorities_max = NIX_TM_TLX_SP_PRIO_MAX; + cap->sched_wfq_n_children_per_group_max = cap->sched_n_children_max; + cap->sched_wfq_n_groups_max = 1; + cap->sched_wfq_weight_max = roc_nix_tm_max_sched_wt_get(); + cap->sched_wfq_packet_mode_supported = 1; + cap->sched_wfq_byte_mode_supported = 1; + + cap->dynamic_update_mask = RTE_TM_UPDATE_NODE_PARENT_KEEP_LEVEL | + RTE_TM_UPDATE_NODE_SUSPEND_RESUME; + cap->stats_mask = RTE_TM_STATS_N_PKTS | RTE_TM_STATS_N_BYTES | + RTE_TM_STATS_N_PKTS_RED_DROPPED | + RTE_TM_STATS_N_BYTES_RED_DROPPED; + + for (i = 0; i < RTE_COLORS; i++) { + cap->mark_vlan_dei_supported[i] = false; + cap->mark_ip_ecn_tcp_supported[i] = false; + cap->mark_ip_dscp_supported[i] = false; + } + + return 0; +} + +static int +cnxk_nix_tm_level_capa_get(struct rte_eth_dev *eth_dev, uint32_t lvl, + struct rte_tm_level_capabilities *cap, + struct rte_tm_error *error) +{ + struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev); + struct roc_nix *nix = &dev->nix; + uint16_t schq[ROC_TM_LVL_MAX]; + int rc, n_lvl; + + memset(cap, 0, sizeof(*cap)); + + rc = roc_nix_tm_rsrc_count(nix, schq); + if (rc) { + error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED; + error->message = "unexpected fatal error"; + return rc; + } + + n_lvl = roc_nix_tm_lvl_cnt_get(nix); + + if (roc_nix_tm_lvl_is_leaf(nix, lvl)) { + /* Leaf */ + cap->n_nodes_max = dev->nb_txq; + cap->n_nodes_leaf_max = dev->nb_txq; + cap->leaf_nodes_identical = 1; + cap->leaf.stats_mask = + RTE_TM_STATS_N_PKTS | RTE_TM_STATS_N_BYTES; + + } else if (lvl == ROC_TM_LVL_ROOT) { + /* Root node, a.k.a. TL2(vf)/TL1(pf) */ + cap->n_nodes_max = 1; + cap->n_nodes_nonleaf_max = 1; + cap->non_leaf_nodes_identical = 1; + + cap->nonleaf.shaper_private_supported = true; + cap->nonleaf.shaper_private_dual_rate_supported = + roc_nix_tm_lvl_have_link_access(nix, lvl) ? false : + true; + cap->nonleaf.shaper_private_rate_min = + NIX_TM_MIN_SHAPER_RATE / 8; + cap->nonleaf.shaper_private_rate_max = + NIX_TM_MAX_SHAPER_RATE / 8; + cap->nonleaf.shaper_private_packet_mode_supported = 1; + cap->nonleaf.shaper_private_byte_mode_supported = 1; + + cap->nonleaf.sched_n_children_max = schq[lvl]; + cap->nonleaf.sched_sp_n_priorities_max = + roc_nix_tm_max_prio(nix, lvl) + 1; + cap->nonleaf.sched_wfq_n_groups_max = 1; + cap->nonleaf.sched_wfq_weight_max = + roc_nix_tm_max_sched_wt_get(); + cap->nonleaf.sched_wfq_packet_mode_supported = 1; + cap->nonleaf.sched_wfq_byte_mode_supported = 1; + + if (roc_nix_tm_lvl_have_link_access(nix, lvl)) + cap->nonleaf.stats_mask = + RTE_TM_STATS_N_PKTS_RED_DROPPED | + RTE_TM_STATS_N_BYTES_RED_DROPPED; + } else if (lvl < ROC_TM_LVL_MAX) { + /* TL2, TL3, TL4, MDQ */ + cap->n_nodes_max = schq[lvl]; + cap->n_nodes_nonleaf_max = cap->n_nodes_max; + cap->non_leaf_nodes_identical = 1; + + cap->nonleaf.shaper_private_supported = true; + cap->nonleaf.shaper_private_dual_rate_supported = true; + cap->nonleaf.shaper_private_rate_min = + NIX_TM_MIN_SHAPER_RATE / 8; + cap->nonleaf.shaper_private_rate_max = + NIX_TM_MAX_SHAPER_RATE / 8; + cap->nonleaf.shaper_private_packet_mode_supported = 1; + cap->nonleaf.shaper_private_byte_mode_supported = 1; + + /* MDQ doesn't support Strict Priority */ + if ((int)lvl == (n_lvl - 1)) + cap->nonleaf.sched_n_children_max = dev->nb_txq; + else + cap->nonleaf.sched_n_children_max = schq[lvl - 1]; + cap->nonleaf.sched_sp_n_priorities_max = + roc_nix_tm_max_prio(nix, lvl) + 1; + cap->nonleaf.sched_wfq_n_groups_max = 1; + cap->nonleaf.sched_wfq_weight_max = + roc_nix_tm_max_sched_wt_get(); + cap->nonleaf.sched_wfq_packet_mode_supported = 1; + cap->nonleaf.sched_wfq_byte_mode_supported = 1; + } else { + /* unsupported level */ + error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED; + return rc; + } + return 0; +} + +static int +cnxk_nix_tm_node_capa_get(struct rte_eth_dev *eth_dev, uint32_t node_id, + struct rte_tm_node_capabilities *cap, + struct rte_tm_error *error) +{ + struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev); + struct cnxk_nix_tm_node *tm_node; + struct roc_nix *nix = &dev->nix; + uint16_t schq[ROC_TM_LVL_MAX]; + int rc, n_lvl, lvl; + + memset(cap, 0, sizeof(*cap)); + + tm_node = (struct cnxk_nix_tm_node *)roc_nix_tm_node_get(nix, node_id); + if (!tm_node) { + error->type = RTE_TM_ERROR_TYPE_NODE_ID; + error->message = "no such node"; + return -EINVAL; + } + + lvl = tm_node->nix_node.lvl; + n_lvl = roc_nix_tm_lvl_cnt_get(nix); + + /* Leaf node */ + if (roc_nix_tm_lvl_is_leaf(nix, lvl)) { + cap->stats_mask = RTE_TM_STATS_N_PKTS | RTE_TM_STATS_N_BYTES; + return 0; + } + + rc = roc_nix_tm_rsrc_count(nix, schq); + if (rc) { + error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED; + error->message = "unexpected fatal error"; + return rc; + } + + /* Non Leaf Shaper */ + cap->shaper_private_supported = true; + cap->shaper_private_rate_min = NIX_TM_MIN_SHAPER_RATE / 8; + cap->shaper_private_rate_max = NIX_TM_MAX_SHAPER_RATE / 8; + cap->shaper_private_packet_mode_supported = 1; + cap->shaper_private_byte_mode_supported = 1; + + /* Non Leaf Scheduler */ + if (lvl == (n_lvl - 1)) + cap->nonleaf.sched_n_children_max = dev->nb_txq; + else + cap->nonleaf.sched_n_children_max = schq[lvl - 1]; + + cap->nonleaf.sched_sp_n_priorities_max = + roc_nix_tm_max_prio(nix, lvl) + 1; + cap->nonleaf.sched_wfq_n_children_per_group_max = + cap->nonleaf.sched_n_children_max; + cap->nonleaf.sched_wfq_n_groups_max = 1; + cap->nonleaf.sched_wfq_weight_max = roc_nix_tm_max_sched_wt_get(); + cap->nonleaf.sched_wfq_packet_mode_supported = 1; + cap->nonleaf.sched_wfq_byte_mode_supported = 1; + + cap->shaper_private_dual_rate_supported = true; + if (roc_nix_tm_lvl_have_link_access(nix, lvl)) { + cap->shaper_private_dual_rate_supported = false; + cap->stats_mask = RTE_TM_STATS_N_PKTS_RED_DROPPED | + RTE_TM_STATS_N_BYTES_RED_DROPPED; + } + + return 0; +} + +const struct rte_tm_ops cnxk_tm_ops = { + .node_type_get = cnxk_nix_tm_node_type_get, + .capabilities_get = cnxk_nix_tm_capa_get, + .level_capabilities_get = cnxk_nix_tm_level_capa_get, + .node_capabilities_get = cnxk_nix_tm_node_capa_get, +}; + +int +cnxk_nix_tm_ops_get(struct rte_eth_dev *eth_dev __rte_unused, void *arg) +{ + if (!arg) + return -EINVAL; + + /* Check for supported revisions */ + if (roc_model_is_cn96_ax() || roc_model_is_cn95_a0()) + return -EINVAL; + + *(const void **)arg = &cnxk_tm_ops; + + return 0; +} + +int +cnxk_nix_tm_set_queue_rate_limit(struct rte_eth_dev *eth_dev, + uint16_t queue_idx, uint16_t tx_rate_mbps) +{ + struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev); + uint64_t tx_rate = tx_rate_mbps * (uint64_t)1E6; + struct roc_nix *nix = &dev->nix; + int rc = -EINVAL; + + /* Check for supported revisions */ + if (roc_model_is_cn96_ax() || roc_model_is_cn95_a0()) + goto exit; + + if (queue_idx >= eth_dev->data->nb_tx_queues) + goto exit; + + if ((roc_nix_tm_tree_type_get(nix) != ROC_NIX_TM_RLIMIT) && + eth_dev->data->nb_tx_queues > 1) { + /* + * Disable xmit will be enabled when + * new topology is available. + */ + rc = roc_nix_tm_hierarchy_disable(nix); + if (rc) + goto exit; + + rc = roc_nix_tm_prepare_rate_limited_tree(nix); + if (rc) + goto exit; + + rc = roc_nix_tm_hierarchy_enable(nix, ROC_NIX_TM_RLIMIT, true); + if (rc) + goto exit; + } + + return roc_nix_tm_rlimit_sq(nix, queue_idx, tx_rate); +exit: + return rc; +} diff --git a/drivers/net/cnxk/cnxk_tm.h b/drivers/net/cnxk/cnxk_tm.h new file mode 100644 index 0000000000..f7470c2634 --- /dev/null +++ b/drivers/net/cnxk/cnxk_tm.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(C) 2021 Marvell. + */ +#ifndef __CNXK_TM_H__ +#define __CNXK_TM_H__ + +#include + +#include + +#include "roc_api.h" + +struct cnxk_nix_tm_node { + struct roc_nix_tm_node nix_node; + struct rte_tm_node_params params; +}; + +#endif /* __CNXK_TM_H__ */ diff --git a/drivers/net/cnxk/meson.build b/drivers/net/cnxk/meson.build index d4cdd1744a..1e86144755 100644 --- a/drivers/net/cnxk/meson.build +++ b/drivers/net/cnxk/meson.build @@ -17,6 +17,7 @@ sources = files( 'cnxk_ptp.c', 'cnxk_rte_flow.c', 'cnxk_stats.c', + 'cnxk_tm.c', ) # CN9K -- 2.20.1