From: Jeff Guo <jia.guo@intel.com> To: alvinx.zhang@intel.com Cc: dev@dpdk.org, beilei.xing@intel.com Subject: Re: [dpdk-dev] [PATCH v3] net/i40e: fix modify the number of qps in VF Date: Wed, 15 Jul 2020 18:17:01 +0800 Message-ID: <09d6bb96-caca-ca53-f5f9-7d6f1dc9b195@intel.com> (raw) In-Reply-To: <20200715072811.12592-1-alvinx.zhang@intel.com> hi, alvin The processing of the queue pairs configure looks better than prior version, but still have some comment. On 7/15/2020 3:28 PM, alvinx.zhang@intel.com wrote: > From: Alvin Zhang <alvinx.zhang@intel.com> > > If a VF request PF to allocate more number of queue pairs, the PF will > free the queue pairs which have been allocated and reset the VF. So, > VF should stop to work until all the process is done. This patch modify > the process of the request queue pairs. To improve efficiency and > eliminate code redundancy, the promiscuous ops were also updated. > > Fixes: c48eb308ed13 ("net/i40e: support VF request more queues") > Cc: stable@dpdk.org > > Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com> > --- > > V2: Update git log and modify codes according to comments. > V3: All the code was refactored. > --- > drivers/net/i40e/i40e_ethdev_vf.c | 109 +++++++++++++++++++++----------------- > 1 file changed, 59 insertions(+), 50 deletions(-) > > diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c > index eca716a..758d444 100644 > --- a/drivers/net/i40e/i40e_ethdev_vf.c > +++ b/drivers/net/i40e/i40e_ethdev_vf.c > @@ -91,7 +91,8 @@ static int i40evf_vlan_filter_set(struct rte_eth_dev *dev, > uint16_t vlan_id, int on); > static int i40evf_vlan_offload_set(struct rte_eth_dev *dev, int mask); > static void i40evf_dev_close(struct rte_eth_dev *dev); > -static int i40evf_dev_reset(struct rte_eth_dev *dev); > +static int i40evf_dev_reset(struct rte_eth_dev *dev); > +static int i40evf_check_vf_reset_done(struct rte_eth_dev *dev); > static int i40evf_dev_promiscuous_enable(struct rte_eth_dev *dev); > static int i40evf_dev_promiscuous_disable(struct rte_eth_dev *dev); > static int i40evf_dev_allmulticast_enable(struct rte_eth_dev *dev); > @@ -519,10 +520,17 @@ struct rte_i40evf_xstats_name_off { > > err = i40evf_execute_vf_cmd(dev, &args); > > - if (err) > - PMD_DRV_LOG(ERR, "fail to execute command " > - "CONFIG_PROMISCUOUS_MODE"); > - return err; > + if (err) { > + if (err == I40E_NOT_SUPPORTED) > + return -ENOTSUP; > + > + PMD_DRV_LOG(ERR, "Failed to set promiscuous mode"); > + return -EAGAIN; I think below is better, please try to keep the log align in driver if there is no special reason. if (err) { PMD_DRV_LOG(ERR, "fail to execute command " "CONFIG_PROMISCUOUS_MODE"); if (err == I40E_NOT_SUPPORTED) return -ENOTSUP; else return -EAGAIN; > + } > + > + vf->promisc_unicast_enabled = enable_unicast; > + vf->promisc_multicast_enabled = enable_multicast; > + return 0; > } > > static int > @@ -1081,12 +1089,31 @@ static int i40evf_dev_xstats_get(struct rte_eth_dev *dev, > args.out_size = I40E_AQ_BUF_SZ; > > rte_eal_alarm_cancel(i40evf_dev_alarm_handler, dev); > + > err = i40evf_execute_vf_cmd(dev, &args); > - if (err) > + if (err != I40E_SUCCESS) { > + rte_eal_alarm_set(I40EVF_ALARM_INTERVAL, > + i40evf_dev_alarm_handler, dev); > PMD_DRV_LOG(ERR, "fail to execute command OP_REQUEST_QUEUES"); > + return -EIO; > + } > > rte_eal_alarm_set(I40EVF_ALARM_INTERVAL, > i40evf_dev_alarm_handler, dev); > + > + /* > + * The PF will issue a reset to the VF when change the number of > + * queues. The PF will set I40E_VFGEN_RSTAT to COMPLETE first, then > + * wait 10ms and set it to ACTIVE. In this duration, vf may not catch > + * the moment that COMPLETE is set. So, for vf, we'll try to wait a > + * long time. > + */ > + rte_delay_ms(100); > + > + err = i40evf_check_vf_reset_done(dev); > + if (err) > + PMD_DRV_LOG(ERR, "VF is still resetting"); > + Please keep the return value and eliminate the duplicate, do you think below is better, you could ref err = i40evf_execute_vf_cmd(dev, &args); rte_eal_alarm_set(I40EVF_ALARM_INTERVAL, i40evf_dev_alarm_handler, dev); if (!err) { check vf reset done.... } else { PMD_DRV_LOG(ERR, "fail to execute command OP_REQUEST_QUEUES"); } > return err; > } > > @@ -1514,7 +1541,7 @@ static int i40evf_dev_xstats_get(struct rte_eth_dev *dev, > hw->bus.device = pci_dev->addr.devid; > hw->bus.func = pci_dev->addr.function; > hw->hw_addr = (void *)pci_dev->mem_resource[0].addr; > - hw->adapter_stopped = 0; > + hw->adapter_stopped = 1; > hw->adapter_closed = 0; > > /* Pass the information to the rte_eth_dev_close() that it should also > @@ -1610,10 +1637,27 @@ static int eth_i40evf_pci_remove(struct rte_pci_device *pci_dev) > ad->tx_vec_allowed = true; > > if (num_queue_pairs > vf->vsi_res->num_queue_pairs) { > - int ret = 0; > + struct i40e_hw *hw; > + int ret; > + > + /* > + * All VF resources will be reallocated, so change queue pairs > + * in secondary processes is forbidden. > + */ Please don't use an empty /* line, use /* Comment.... And seems that the word "forbidden" is not very make sense. you could ref other place about secondary process checking, simply like below / * for secondary processes, we don't configure queue pairs any further * as primary has already done this work. */ > + if (rte_eal_process_type() != RTE_PROC_PRIMARY) { > + PMD_DRV_LOG(ERR, > + "For secondary processes, change queue pairs is forbidden!"); Alignment should match open parenthesis, you could use the checkpatch.pl to check it. Add please check if below i40evf_init_vlan also no need in secondary process. If so, i suggest split this part into other specific fixing patch for secondary process configuration. > + return -ENOTSUP; > + } > > + hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); > PMD_DRV_LOG(INFO, "change queue pairs from %u to %u", > vf->vsi_res->num_queue_pairs, num_queue_pairs); > + if (hw->adapter_stopped == 0) { > + PMD_DRV_LOG(WARNING, "Device must be stopped first!"); > + return -EINVAL; I think ERR but not warning should be return here, and do you think -EBUSY should be better than -EINVAL? > + } > + > ret = i40evf_request_queues(dev, num_queue_pairs); > if (ret != 0) > return ret; > @@ -2182,68 +2226,32 @@ static int eth_i40evf_pci_remove(struct rte_pci_device *pci_dev) > i40evf_dev_promiscuous_enable(struct rte_eth_dev *dev) > { > struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); > - int ret; > - > - ret = i40evf_config_promisc(dev, 1, vf->promisc_multicast_enabled); > - if (ret == 0) > - vf->promisc_unicast_enabled = TRUE; > - else if (ret == I40E_NOT_SUPPORTED) > - ret = -ENOTSUP; > - else > - ret = -EAGAIN; > > - return ret; > + return i40evf_config_promisc(dev, true, vf->promisc_multicast_enabled); > } > > static int > i40evf_dev_promiscuous_disable(struct rte_eth_dev *dev) > { > struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); > - int ret; > - > - ret = i40evf_config_promisc(dev, 0, vf->promisc_multicast_enabled); > - if (ret == 0) > - vf->promisc_unicast_enabled = FALSE; > - else if (ret == I40E_NOT_SUPPORTED) > - ret = -ENOTSUP; > - else > - ret = -EAGAIN; > > - return ret; > + return i40evf_config_promisc(dev, false, vf->promisc_multicast_enabled); > } > > static int > i40evf_dev_allmulticast_enable(struct rte_eth_dev *dev) > { > struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); > - int ret; > - > - ret = i40evf_config_promisc(dev, vf->promisc_unicast_enabled, 1); > - if (ret == 0) > - vf->promisc_multicast_enabled = TRUE; > - else if (ret == I40E_NOT_SUPPORTED) > - ret = -ENOTSUP; > - else > - ret = -EAGAIN; > > - return ret; > + return i40evf_config_promisc(dev, vf->promisc_unicast_enabled, true); > } > > static int > i40evf_dev_allmulticast_disable(struct rte_eth_dev *dev) > { > struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); > - int ret; > - > - ret = i40evf_config_promisc(dev, vf->promisc_unicast_enabled, 0); > - if (ret == 0) > - vf->promisc_multicast_enabled = FALSE; > - else if (ret == I40E_NOT_SUPPORTED) > - ret = -ENOTSUP; > - else > - ret = -EAGAIN; > > - return ret; > + return i40evf_config_promisc(dev, vf->promisc_unicast_enabled, false); > } > > static int > @@ -2365,8 +2373,9 @@ static int eth_i40evf_pci_remove(struct rte_pci_device *pci_dev) > * it is a workaround solution when work with kernel driver > * and it is not the normal way > */ > - i40evf_dev_promiscuous_disable(dev); > - i40evf_dev_allmulticast_disable(dev); > + if (vf->promisc_unicast_enabled || vf->promisc_multicast_enabled) > + i40evf_config_promisc(dev, false, false); Need checking the return status when i40evf_config_promisc return failed? > + > rte_eal_alarm_cancel(i40evf_dev_alarm_handler, dev); > > i40evf_reset_vf(dev);
next prev parent reply other threads:[~2020-07-15 10:17 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-10 12:07 [dpdk-dev] [PATCH] net/i40e: fix modifying the number of queues alvinx.zhang 2020-06-21 13:36 ` Jeff Guo 2020-06-29 3:16 ` Zhang, AlvinX 2020-06-30 3:13 ` Jeff Guo 2020-07-02 3:26 ` [dpdk-dev] [PATCH v2] net/i40e: fix modify the number of qps in VF alvinx.zhang 2020-07-15 7:28 ` [dpdk-dev] [PATCH v3] " alvinx.zhang 2020-07-15 10:17 ` Jeff Guo [this message] 2020-07-16 1:38 ` Zhang, AlvinX 2020-07-16 1:52 ` [dpdk-dev] [PATCH v4] " alvinx.zhang 2020-07-16 4:24 ` [dpdk-dev] [PATCH v5] " alvinx.zhang 2020-07-16 4:57 ` Yang, Qiming 2020-07-16 5:13 ` Zhang, AlvinX 2020-07-16 5:12 ` alvinx.zhang 2020-07-16 6:33 ` [dpdk-dev] [PATCH v5] net/i40e: fix qps configuration " alvinx.zhang 2020-07-16 7:30 ` Jeff Guo 2020-07-16 9:14 ` Zhang, Qi Z
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