From: Lijun Ou Date: Thu, 26 Mar 2020 07:14:30 +0000 (+0800) Subject: net/hns3: fix RSS indirection table configuration X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=920be799dbc3fe27c77c665921d053e33d43e091;p=dpdk.git net/hns3: fix RSS indirection table configuration For the current hns3 PMD driver, there are some RSS related bugs at the following scenes: 1. Start the application with the number of Rx queues equals 1(--rxq=1), modify the number of Rx queue to some number greater than 1 during normal operation. As a result, upper application can't receive packets from multiple rx queues. 2. Start testpmd application with the option disable-rss and the number of Rx queue is greater than 1(--disable-rss --rxq=N, N>1). As a result, upper application still can receive packets from multiple rx queues. The root cause as below: There are some error configuration in the RSS indirection table of hns3 network engine. This patch fixes them with the following modification. 1. When RSS size is changed, we need to update RSS redirection table maintained by driver and configure them to hardware. Besides, during the entire reset process, we need to ensure that the RSS table information are not overwritten and configured directly to the hardware in the RESET_STAGE_RESTORE stage of the reset process. 2. When sarting testpmd application with the options disable-rss, it doesn't need to configure RSS redirection table to hardware. Fixes: c37ca66f2b27 ("net/hns3: support RSS") Cc: stable@dpdk.org Signed-off-by: Lijun Ou Signed-off-by: Huisong Li Signed-off-by: Wei Hu (Xavier) --- diff --git a/drivers/net/hns3/hns3_dcb.c b/drivers/net/hns3/hns3_dcb.c index 369a40e6a7..8688de2a73 100644 --- a/drivers/net/hns3/hns3_dcb.c +++ b/drivers/net/hns3/hns3_dcb.c @@ -580,7 +580,9 @@ hns3_dcb_pri_shaper_cfg(struct hns3_hw *hw) void hns3_set_rss_size(struct hns3_hw *hw, uint16_t nb_rx_q) { + struct hns3_rss_conf *rss_cfg = &hw->rss_info; uint16_t rx_qnum_per_tc; + int i; rx_qnum_per_tc = nb_rx_q / hw->num_tc; rx_qnum_per_tc = RTE_MIN(hw->rss_size_max, rx_qnum_per_tc); @@ -590,6 +592,19 @@ hns3_set_rss_size(struct hns3_hw *hw, uint16_t nb_rx_q) hw->alloc_rss_size = rx_qnum_per_tc; } hw->used_rx_queues = hw->num_tc * hw->alloc_rss_size; + + /* + * When rss size is changed, we need to update rss redirection table + * maintained by driver. Besides, during the entire reset process, we + * need to ensure that the rss table information are not overwritten + * and configured directly to the hardware in the RESET_STAGE_RESTORE + * stage of the reset process. + */ + if (rte_atomic16_read(&hw->reset.resetting) == 0) { + for (i = 0; i < HNS3_RSS_IND_TBL_SIZE; i++) + rss_cfg->rss_indirection_tbl[i] = + i % hw->alloc_rss_size; + } } void diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c index 94e8b8ab98..1d19de0e67 100644 --- a/drivers/net/hns3/hns3_ethdev.c +++ b/drivers/net/hns3/hns3_ethdev.c @@ -4258,6 +4258,12 @@ alloc_intr_vec_error: return ret; } +static void +hns3_restore_filter(struct rte_eth_dev *dev) +{ + hns3_restore_rss_filter(dev); +} + static int hns3_dev_start(struct rte_eth_dev *dev) { @@ -4289,6 +4295,8 @@ hns3_dev_start(struct rte_eth_dev *dev) hns3_mp_req_start_rxtx(dev); rte_eal_alarm_set(HNS3_SERVICE_INTERVAL, hns3_service_handler, dev); + hns3_restore_filter(dev); + hns3_info(hw, "hns3 dev start successful!"); return 0; } diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c index e7e2cba824..3c72976f3d 100644 --- a/drivers/net/hns3/hns3_ethdev_vf.c +++ b/drivers/net/hns3/hns3_ethdev_vf.c @@ -1744,6 +1744,12 @@ vf_alloc_intr_vec_error: return ret; } +static void +hns3vf_restore_filter(struct rte_eth_dev *dev) +{ + hns3_restore_rss_filter(dev); +} + static int hns3vf_dev_start(struct rte_eth_dev *dev) { @@ -1773,6 +1779,8 @@ hns3vf_dev_start(struct rte_eth_dev *dev) hns3_mp_req_start_rxtx(dev); rte_eal_alarm_set(HNS3VF_SERVICE_INTERVAL, hns3vf_service_handler, dev); + hns3vf_restore_filter(dev); + return ret; } diff --git a/drivers/net/hns3/hns3_flow.c b/drivers/net/hns3/hns3_flow.c index 559b9d02b1..53708d2054 100644 --- a/drivers/net/hns3/hns3_flow.c +++ b/drivers/net/hns3/hns3_flow.c @@ -1546,6 +1546,19 @@ hns3_clear_rss_filter(struct rte_eth_dev *dev) return hns3_config_rss_filter(dev, &hw->rss_info, false); } +/* Restore the rss filter */ +int +hns3_restore_rss_filter(struct rte_eth_dev *dev) +{ + struct hns3_adapter *hns = dev->data->dev_private; + struct hns3_hw *hw = &hns->hw; + + if (hw->rss_info.conf.queue_num == 0) + return 0; + + return hns3_config_rss_filter(dev, &hw->rss_info, true); +} + static int hns3_flow_parse_rss(struct rte_eth_dev *dev, const struct hns3_rss_conf *conf, bool add) diff --git a/drivers/net/hns3/hns3_rss.c b/drivers/net/hns3/hns3_rss.c index dfc42f840e..737d5f1093 100644 --- a/drivers/net/hns3/hns3_rss.c +++ b/drivers/net/hns3/hns3_rss.c @@ -127,7 +127,7 @@ hns3_set_rss_indir_table(struct hns3_hw *hw, uint8_t *indir, uint16_t size) req->rss_set_bitmap = rte_cpu_to_le_16(HNS3_RSS_SET_BITMAP_MSK); for (j = 0; j < HNS3_RSS_CFG_TBL_SIZE; j++) { num = i * HNS3_RSS_CFG_TBL_SIZE + j; - req->rss_result[j] = indir[num] % hw->alloc_rss_size; + req->rss_result[j] = indir[num]; } ret = hns3_cmd_send(hw, &desc, 1); if (ret) { @@ -423,7 +423,7 @@ hns3_dev_rss_reta_query(struct rte_eth_dev *dev, shift = i % RTE_RETA_GROUP_SIZE; if (reta_conf[idx].mask & (1ULL << shift)) reta_conf[idx].reta[shift] = - rss_cfg->rss_indirection_tbl[i] % hw->alloc_rss_size; + rss_cfg->rss_indirection_tbl[i]; } rte_spinlock_unlock(&hw->lock); return 0; @@ -532,7 +532,7 @@ hns3_config_rss(struct hns3_adapter *hns) enum rte_eth_rx_mq_mode mq_mode = hw->data->dev_conf.rxmode.mq_mode; - /* When there is no open RSS, redirect the packet queue 0 */ + /* When RSS is off, redirect the packet queue 0 */ if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG) == 0) hns3_rss_uninit(hns); @@ -546,10 +546,16 @@ hns3_config_rss(struct hns3_adapter *hns) if (ret) return ret; - ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl, - HNS3_RSS_IND_TBL_SIZE); - if (ret) - goto rss_tuple_uninit; + /* + * When RSS is off, it doesn't need to configure rss redirection table + * to hardware. + */ + if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) { + ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl, + HNS3_RSS_IND_TBL_SIZE); + if (ret) + goto rss_tuple_uninit; + } ret = hns3_set_rss_tc_mode(hw); if (ret) @@ -558,9 +564,11 @@ hns3_config_rss(struct hns3_adapter *hns) return ret; rss_indir_table_uninit: - ret1 = hns3_rss_reset_indir_table(hw); - if (ret1 != 0) - return ret; + if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) { + ret1 = hns3_rss_reset_indir_table(hw); + if (ret1 != 0) + return ret; + } rss_tuple_uninit: hns3_rss_tuple_uninit(hw); diff --git a/drivers/net/hns3/hns3_rss.h b/drivers/net/hns3/hns3_rss.h index 725970f891..3c79051329 100644 --- a/drivers/net/hns3/hns3_rss.h +++ b/drivers/net/hns3/hns3_rss.h @@ -111,4 +111,6 @@ int hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw, uint64_t rss_hf); int hns3_set_rss_algo_key(struct hns3_hw *hw, uint8_t hash_algo, const uint8_t *key); +int hns3_restore_rss_filter(struct rte_eth_dev *dev); + #endif /* _HNS3_RSS_H_ */