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authorZhirun Yan <zhirun.yan@intel.com>2018-12-20 11:01:28 +0000
committerFerruh Yigit <ferruh.yigit@intel.com>2018-12-21 16:22:41 +0100
commitc48eb308ed13320e62dc83f3f771372587708b0d (patch)
treea416e9aac87d6f797a2d17c160fe8fedc3f598da /drivers/net/i40e
parent3fcde631cba0560541ffc6c25b9c2fbe45dcf789 (diff)
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net/i40e: support VF request more queues
Before this patch, VF gets a default number of queues from the PF. This patch enables VF to request a different number. When VF configures more queues, it will send VIRTCHNL_OP_REQUEST_QUEUES to PF to request more queues, if success, PF will reset the VF. User can run "port stop all", "port config port_id rxq/txq queue_num" and "port start all" to reconfigure queue number. Signed-off-by: Zhirun Yan <zhirun.yan@intel.com> Signed-off-by: Haiyue Wang <haiyue.wang@intel.com> Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Diffstat (limited to 'drivers/net/i40e')
-rw-r--r--drivers/net/i40e/i40e_ethdev_vf.c65
1 files changed, 63 insertions, 2 deletions
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 100e71c..7e4bd73 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -359,6 +359,28 @@ i40evf_execute_vf_cmd(struct rte_eth_dev *dev, struct vf_cmd_info *args)
} while (i++ < MAX_TRY_TIMES);
_clear_cmd(vf);
break;
+ case VIRTCHNL_OP_REQUEST_QUEUES:
+ /**
+ * ignore async reply, only wait for system message,
+ * vf_reset = true if get VIRTCHNL_EVENT_RESET_IMPENDING,
+ * if not, means request queues failed.
+ */
+ err = -1;
+ do {
+ ret = i40evf_read_pfmsg(dev, &info);
+ vf->cmd_retval = info.result;
+ if (ret == I40EVF_MSG_SYS && vf->vf_reset) {
+ err = 0;
+ break;
+ } else if (ret == I40EVF_MSG_ERR ||
+ ret == I40EVF_MSG_CMD) {
+ break;
+ }
+ rte_delay_ms(ASQ_DELAY_MS);
+ /* If don't read msg or read sys event, continue */
+ } while (i++ < MAX_TRY_TIMES);
+ _clear_cmd(vf);
+ break;
default:
/* for other adminq in running time, waiting the cmd done flag */
@@ -1013,6 +1035,28 @@ i40evf_add_vlan(struct rte_eth_dev *dev, uint16_t vlanid)
}
static int
+i40evf_request_queues(struct rte_eth_dev *dev, uint16_t num)
+{
+ struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
+ struct virtchnl_vf_res_request vfres;
+ struct vf_cmd_info args;
+ int err;
+
+ vfres.num_queue_pairs = num;
+
+ args.ops = VIRTCHNL_OP_REQUEST_QUEUES;
+ args.in_args = (u8 *)&vfres;
+ args.in_args_size = sizeof(vfres);
+ args.out_buffer = vf->aq_resp;
+ args.out_size = I40E_AQ_BUF_SZ;
+ err = i40evf_execute_vf_cmd(dev, &args);
+ if (err)
+ PMD_DRV_LOG(ERR, "fail to execute command OP_REQUEST_QUEUES");
+
+ return err;
+}
+
+static int
i40evf_del_vlan(struct rte_eth_dev *dev, uint16_t vlanid)
{
struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
@@ -1522,8 +1566,11 @@ RTE_PMD_REGISTER_KMOD_DEP(net_i40e_vf, "* igb_uio | vfio-pci");
static int
i40evf_dev_configure(struct rte_eth_dev *dev)
{
+ struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
struct i40e_adapter *ad =
I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+ uint16_t num_queue_pairs = RTE_MAX(dev->data->nb_rx_queues,
+ dev->data->nb_tx_queues);
/* Initialize to TRUE. If any of Rx queues doesn't meet the bulk
* allocation or vector Rx preconditions we will reset it.
@@ -1533,6 +1580,20 @@ i40evf_dev_configure(struct rte_eth_dev *dev)
ad->tx_simple_allowed = true;
ad->tx_vec_allowed = true;
+ if (num_queue_pairs > vf->vsi_res->num_queue_pairs) {
+ int ret = 0;
+
+ PMD_DRV_LOG(INFO, "change queue pairs from %u to %u",
+ vf->vsi_res->num_queue_pairs, num_queue_pairs);
+ ret = i40evf_request_queues(dev, num_queue_pairs);
+ if (ret != 0)
+ return ret;
+
+ ret = i40evf_dev_reset(dev);
+ if (ret != 0)
+ return ret;
+ }
+
return i40evf_init_vlan(dev);
}
@@ -2151,8 +2212,8 @@ i40evf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
{
struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
- dev_info->max_rx_queues = vf->vsi_res->num_queue_pairs;
- dev_info->max_tx_queues = vf->vsi_res->num_queue_pairs;
+ dev_info->max_rx_queues = I40E_MAX_QP_NUM_PER_VF;
+ dev_info->max_tx_queues = I40E_MAX_QP_NUM_PER_VF;
dev_info->min_rx_bufsize = I40E_BUF_SIZE_MIN;
dev_info->max_rx_pktlen = I40E_FRAME_SIZE_MAX;
dev_info->hash_key_size = (I40E_VFQF_HKEY_MAX_INDEX + 1) * sizeof(uint32_t);