On Linux PF hosts, the VF has no means of changing the HW CRC strip
setting for a RX queue. It's implicitly enabled.
This patch ignores, and warns, if HW CRC stripping was disabled.
Signed-off-by: Bj?rn T?pel <bjorn.topel at intel.com>
---
drivers/net/i40e/i40e_ethdev_vf.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
b/drivers/net/i40e/i40e_ethdev_vf.c
index 2bce69b..f88eb79 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1567,6 +1567,8 @@ i40evf_dev_configure(struct rte_eth_dev *dev)
{
struct i40e_adapter *ad =
I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+ struct rte_eth_conf *conf = &dev->data->dev_conf;
+ struct i40e_vf *vf;
/* Initialize to TRUE. If any of Rx queues doesn't meet the bulk
* allocation or vector Rx preconditions we will reset it.
@@ -1576,6 +1578,19 @@ i40evf_dev_configure(struct rte_eth_dev *dev)
ad->tx_simple_allowed = true;
ad->tx_vec_allowed = true;
+ /* For Linux PF hosts, VF has no ability to disable HW CRC strip,
+ * and is implicitly enabled by the PF.
+ */
+ if (!conf->rxmode.hw_strip_crc) {
+ vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
+ if ((vf->version_major == I40E_VIRTCHNL_VERSION_MAJOR) &&
+ (vf->version_minor <= I40E_VIRTCHNL_VERSION_MINOR)) {
+ /* Peer is Linux PF host. */
+ PMD_INIT_LOG(NOTICE, "VF can't disable HW CRC Strip.");
+ conf->rxmode.hw_strip_crc = 1;
+ }
+ }
+
return i40evf_init_vlan(dev);
}
--
2.7.4
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