[dpdk-dev] [PATCH] net/i40e: fix modifying the number of queues
alvinx.zhang at intel.com
alvinx.zhang at intel.com
Wed Jun 10 14:07:03 CEST 2020
From: Alvin Zhang <alvinx.zhang at intel.com>
For the newly created VF, if the number of qps is greater than 4
at startup, it may fail to start. This patch updates the API
`i40evf_dev_configure`.
Fixes: c48eb308ed13 ("net/i40e: support VF request more queues")
Cc: stable at dpdk.org
Signed-off-by: Alvin Zhang <alvinx.zhang at intel.com>
---
drivers/net/i40e/i40e_ethdev_vf.c | 32 ++++++++++++++++++++++++--------
1 file changed, 24 insertions(+), 8 deletions(-)
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index bb5d28a..7500e0a 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1082,13 +1082,10 @@ static int i40evf_dev_xstats_get(struct rte_eth_dev *dev,
args.out_buffer = vf->aq_resp;
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)
PMD_DRV_LOG(ERR, "fail to execute command OP_REQUEST_QUEUES");
- rte_eal_alarm_set(I40EVF_ALARM_INTERVAL,
- i40evf_dev_alarm_handler, dev);
return err;
}
@@ -1516,7 +1513,7 @@ 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
@@ -1612,16 +1609,35 @@ 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;
+ 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;
+ }
+
+ rte_eal_alarm_cancel(i40evf_dev_alarm_handler, dev);
ret = i40evf_request_queues(dev, num_queue_pairs);
- if (ret != 0)
+ if (ret)
return ret;
- ret = i40evf_dev_reset(dev);
- if (ret != 0)
+ /*
+ * The device must be reinitiated after queue resources
+ * changed
+ */
+ i40e_shutdown_adminq(hw);
+ i40evf_disable_irq0(hw);
+ rte_free(vf->vf_res);
+ vf->vf_res = NULL;
+ rte_free(vf->aq_resp);
+ vf->aq_resp = NULL;
+
+ ret = i40evf_dev_init(dev);
+ if (ret)
return ret;
}
--
1.8.3.1
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