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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO2PR03MB2358 Subject: [dpdk-dev] [PATCH v2 05/18] net/dpaa: add frame count based tail drop with CGR X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 13:24:29 -0000 Replace the byte based tail queue congestion support with frame count based congestion groups. It can easily map to number of RX descriptors for a queue. Signed-off-by: Hemant Agrawal --- drivers/bus/dpaa/rte_bus_dpaa_version.map | 5 ++ drivers/net/dpaa/dpaa_ethdev.c | 98 +++++++++++++++++++++++++++---- drivers/net/dpaa/dpaa_ethdev.h | 8 +-- 3 files changed, 97 insertions(+), 14 deletions(-) diff --git a/drivers/bus/dpaa/rte_bus_dpaa_version.map b/drivers/bus/dpaa/rte_bus_dpaa_version.map index eeeb458..f412362 100644 --- a/drivers/bus/dpaa/rte_bus_dpaa_version.map +++ b/drivers/bus/dpaa/rte_bus_dpaa_version.map @@ -69,6 +69,11 @@ DPDK_18.02 { global: dpaa_svr_family; + qman_alloc_cgrid_range; + qman_create_cgr; + qman_delete_cgr; + qman_modify_cgr; + qman_release_cgrid_range; local: *; } DPDK_17.11; diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c index 5a2ea4f..5d94af5 100644 --- a/drivers/net/dpaa/dpaa_ethdev.c +++ b/drivers/net/dpaa/dpaa_ethdev.c @@ -47,6 +47,9 @@ /* Keep track of whether QMAN and BMAN have been globally initialized */ static int is_global_init; +/* Per FQ Taildrop in frame count */ +static unsigned int td_threshold = CGR_RX_PERFQ_THRESH; + struct rte_dpaa_xstats_name_off { char name[RTE_ETH_XSTATS_NAME_SIZE]; uint32_t offset; @@ -421,12 +424,13 @@ static void dpaa_eth_multicast_disable(struct rte_eth_dev *dev) static int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, - uint16_t nb_desc __rte_unused, + uint16_t nb_desc, unsigned int socket_id __rte_unused, const struct rte_eth_rxconf *rx_conf __rte_unused, struct rte_mempool *mp) { struct dpaa_if *dpaa_intf = dev->data->dev_private; + struct qman_fq *rxq = &dpaa_intf->rx_queues[queue_idx]; PMD_INIT_FUNC_TRACE(); @@ -462,7 +466,23 @@ int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, dpaa_intf->name, fd_offset, fman_if_get_fdoff(dpaa_intf->fif)); } - dev->data->rx_queues[queue_idx] = &dpaa_intf->rx_queues[queue_idx]; + + dev->data->rx_queues[queue_idx] = rxq; + + /* configure the CGR size as per the desc size */ + if (dpaa_intf->cgr_rx) { + struct qm_mcc_initcgr cgr_opts = {0}; + int ret; + + /* Enable tail drop with cgr on this queue */ + qm_cgr_cs_thres_set64(&cgr_opts.cgr.cs_thres, nb_desc, 0); + ret = qman_modify_cgr(dpaa_intf->cgr_rx, 0, &cgr_opts); + if (ret) { + DPAA_PMD_WARN( + "rx taildrop modify fail on fqid %d (ret=%d)", + rxq->fqid, ret); + } + } return 0; } @@ -698,11 +718,21 @@ static int dpaa_fc_set_default(struct dpaa_if *dpaa_intf) } /* Initialise an Rx FQ */ -static int dpaa_rx_queue_init(struct qman_fq *fq, +static int dpaa_rx_queue_init(struct qman_fq *fq, struct qman_cgr *cgr_rx, uint32_t fqid) { struct qm_mcc_initfq opts = {0}; int ret; + u32 flags = 0; + struct qm_mcc_initcgr cgr_opts = { + .we_mask = QM_CGR_WE_CS_THRES | + QM_CGR_WE_CSTD_EN | + QM_CGR_WE_MODE, + .cgr = { + .cstd_en = QM_CGR_EN, + .mode = QMAN_CGR_MODE_FRAME + } + }; PMD_INIT_FUNC_TRACE(); @@ -732,12 +762,24 @@ static int dpaa_rx_queue_init(struct qman_fq *fq, opts.fqd.context_a.stashing.data_cl = DPAA_IF_RX_DATA_STASH; opts.fqd.context_a.stashing.context_cl = DPAA_IF_RX_CONTEXT_STASH; - /*Enable tail drop */ - opts.we_mask = opts.we_mask | QM_INITFQ_WE_TDTHRESH; - opts.fqd.fq_ctrl = opts.fqd.fq_ctrl | QM_FQCTRL_TDE; - qm_fqd_taildrop_set(&opts.fqd.td, CONG_THRESHOLD_RX_Q, 1); - - ret = qman_init_fq(fq, 0, &opts); + if (cgr_rx) { + /* Enable tail drop with cgr on this queue */ + qm_cgr_cs_thres_set64(&cgr_opts.cgr.cs_thres, td_threshold, 0); + cgr_rx->cb = NULL; + ret = qman_create_cgr(cgr_rx, QMAN_CGR_FLAG_USE_INIT, + &cgr_opts); + if (ret) { + DPAA_PMD_WARN( + "rx taildrop init fail on rx fqid %d (ret=%d)", + fqid, ret); + goto without_cgr; + } + opts.we_mask |= QM_INITFQ_WE_CGID; + opts.fqd.cgid = cgr_rx->cgrid; + opts.fqd.fq_ctrl |= QM_FQCTRL_CGE; + } +without_cgr: + ret = qman_init_fq(fq, flags, &opts); if (ret) DPAA_PMD_ERR("init rx fqid %d failed with ret: %d", fqid, ret); return ret; @@ -819,6 +861,7 @@ dpaa_dev_init(struct rte_eth_dev *eth_dev) struct fm_eth_port_cfg *cfg; struct fman_if *fman_intf; struct fman_if_bpool *bp, *tmp_bp; + uint32_t cgrid[DPAA_MAX_NUM_PCD_QUEUES]; PMD_INIT_FUNC_TRACE(); @@ -855,10 +898,31 @@ dpaa_dev_init(struct rte_eth_dev *eth_dev) dpaa_intf->rx_queues = rte_zmalloc(NULL, sizeof(struct qman_fq) * num_rx_fqs, MAX_CACHELINE); + + /* If congestion control is enabled globally*/ + if (td_threshold) { + dpaa_intf->cgr_rx = rte_zmalloc(NULL, + sizeof(struct qman_cgr) * num_rx_fqs, MAX_CACHELINE); + + ret = qman_alloc_cgrid_range(&cgrid[0], num_rx_fqs, 1, 0); + if (ret != num_rx_fqs) { + DPAA_PMD_WARN("insufficient CGRIDs available"); + return -EINVAL; + } + } else { + dpaa_intf->cgr_rx = NULL; + } + for (loop = 0; loop < num_rx_fqs; loop++) { fqid = DPAA_PCD_FQID_START + dpaa_intf->ifid * DPAA_PCD_FQID_MULTIPLIER + loop; - ret = dpaa_rx_queue_init(&dpaa_intf->rx_queues[loop], fqid); + + if (dpaa_intf->cgr_rx) + dpaa_intf->cgr_rx[loop].cgrid = cgrid[loop]; + + ret = dpaa_rx_queue_init(&dpaa_intf->rx_queues[loop], + dpaa_intf->cgr_rx ? &dpaa_intf->cgr_rx[loop] : NULL, + fqid); if (ret) return ret; dpaa_intf->rx_queues[loop].dpaa_intf = dpaa_intf; @@ -913,6 +977,7 @@ dpaa_dev_init(struct rte_eth_dev *eth_dev) DPAA_PMD_ERR("Failed to allocate %d bytes needed to " "store MAC addresses", ETHER_ADDR_LEN * DPAA_MAX_MAC_FILTER); + rte_free(dpaa_intf->cgr_rx); rte_free(dpaa_intf->rx_queues); rte_free(dpaa_intf->tx_queues); dpaa_intf->rx_queues = NULL; @@ -951,6 +1016,7 @@ static int dpaa_dev_uninit(struct rte_eth_dev *dev) { struct dpaa_if *dpaa_intf = dev->data->dev_private; + int loop; PMD_INIT_FUNC_TRACE(); @@ -968,6 +1034,18 @@ dpaa_dev_uninit(struct rte_eth_dev *dev) if (dpaa_intf->fc_conf) rte_free(dpaa_intf->fc_conf); + /* Release RX congestion Groups */ + if (dpaa_intf->cgr_rx) { + for (loop = 0; loop < dpaa_intf->nb_rx_queues; loop++) + qman_delete_cgr(&dpaa_intf->cgr_rx[loop]); + + qman_release_cgrid_range(dpaa_intf->cgr_rx[loop].cgrid, + dpaa_intf->nb_rx_queues); + } + + rte_free(dpaa_intf->cgr_rx); + dpaa_intf->cgr_rx = NULL; + rte_free(dpaa_intf->rx_queues); dpaa_intf->rx_queues = NULL; diff --git a/drivers/net/dpaa/dpaa_ethdev.h b/drivers/net/dpaa/dpaa_ethdev.h index 548ccff..f00a77a 100644 --- a/drivers/net/dpaa/dpaa_ethdev.h +++ b/drivers/net/dpaa/dpaa_ethdev.h @@ -34,10 +34,8 @@ #define DPAA_MIN_RX_BUF_SIZE 512 #define DPAA_MAX_RX_PKT_LEN 10240 -/* RX queue tail drop threshold - * currently considering 32 KB packets. - */ -#define CONG_THRESHOLD_RX_Q (32 * 1024) +/* RX queue tail drop threshold (CGR Based) in frame count */ +#define CGR_RX_PERFQ_THRESH 256 /*max mac filter for memac(8) including primary mac addr*/ #define DPAA_MAX_MAC_FILTER (MEMAC_NUM_OF_PADDRS + 1) @@ -53,6 +51,7 @@ #define DPAA_PCD_FQID_START 0x400 #define DPAA_PCD_FQID_MULTIPLIER 0x100 #define DPAA_DEFAULT_NUM_PCD_QUEUES 1 +#define DPAA_MAX_NUM_PCD_QUEUES 32 #define DPAA_IF_TX_PRIORITY 3 #define DPAA_IF_RX_PRIORITY 4 @@ -102,6 +101,7 @@ struct dpaa_if { char *name; const struct fm_eth_port_cfg *cfg; struct qman_fq *rx_queues; + struct qman_cgr *cgr_rx; struct qman_fq *tx_queues; struct qman_fq debug_queues[2]; uint16_t nb_rx_queues; -- 2.7.4