commit 5ae3e91c3502df90fb0ca9c76ac6eb5c2363264f
author Miao Yan <yanmiaobest@gmail.com> Tue Dec 22 22:06:09 2015 -0800
committer Jason Wang <jasowang@redhat.com> Mon Jan 11 11:01:34 2016 +0800
tree ed643515757ca039e9484f3fc4168ca4a0fafe66
parent c469669ef7b4ee2ec1e0db0053ada6809c5b5f98

net/vmxnet3: return correct value for VMXNET3_CMD_GET_DEV_EXTRA_INFO

VMXNET3_CMD_GET_DEV_EXTRA_INFO should return 0 for emulation
mode

This behavior can be observed by the following steps:

1) run a Linux distro on esxi server (5.x+)
2) modify vmxnet3 Linux driver to read the register:

  VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_DEV_EXTRA_INFO);
  ret =  VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
  pr_info("vmxnet3 dev_info: 0x%x\n", ret);

The kernel log will have some like the following message:

  [ 7005.111170] vmxnet3 dev_info: 0x0

Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

hw/net/vmxnet3.c

diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
index 0aff0d4..da59d7d 100644
--- a/hw/net/vmxnet3.c
+++ b/hw/net/vmxnet3.c
@@ -1658,6 +1658,10 @@
         VMW_CBPRN("Set: Get upper part of device ID");
         break;
 
+    case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
+        VMW_CBPRN("Set: Get device extra info");
+        break;
+
     default:
         VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
         break;
@@ -1677,6 +1681,7 @@
     case VMXNET3_CMD_RESET_DEV:
     case VMXNET3_CMD_QUIESCE_DEV:
     case VMXNET3_CMD_GET_QUEUE_STATUS:
+    case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
         ret = 0;
         break;