net/vmxnet3: update to version 3

With all vmxnet3 version 3 changes incorporated in the vmxnet3 driver,
the driver can configure emulation to run at vmxnet3 version 3, provided
the emulation advertises support for version 3.

This patch also updates release notes.

Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Acked-by: Yong Wang <yongwang@vmware.com>
Acked-by: Jin Heo <heoj@vmware.com>

diff --git a/doc/guides/rel_notes/release_17_05.rst b/doc/guides/rel_notes/release_17_05.rst
index 2c76d82..0b6c453 100644 (file)
--- a/doc/guides/rel_notes/release_17_05.rst
+++ b/doc/guides/rel_notes/release_17_05.rst
@@ -79,6 +79,12 @@ New Features
 
   i40e PMD and its vector PMD enabled by default in powerpc.
 
+* **Added vmxnet3 version 3 support.**
+
+  Added support for vmxnet3 version 3 which includes several
+  performance enhancements viz. configurable TX data ring, Receive
+  Data Ring, ability to register memory regions.
+
 
 Resolved Issues
 ---------------

diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index bb22b6d..ae3efaa 100644 (file)
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -284,7 +284,11 @@ eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
        ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
        PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
 
-       if (ver & (1 << VMXNET3_REV_2)) {
+       if (ver & (1 << VMXNET3_REV_3)) {
+               VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS,
+                                      1 << VMXNET3_REV_3);
+               hw->version = VMXNET3_REV_3 + 1;
+       } else if (ver & (1 << VMXNET3_REV_2)) {
                VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS,
                                       1 << VMXNET3_REV_2);
                hw->version = VMXNET3_REV_2 + 1;