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net/vmxnet3: return correct value for VMXNET3_CMD_GET_DEV_EXTRA_INFO

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VMXNET3_CMD_GET_DEV_EXTRA_INFO should return 0 for emulation
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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>
This commit is contained in:
Miao Yan 2015-12-22 22:06:09 -08:00 committed by Jason Wang
parent c469669ef7
commit 5ae3e91c35
1 changed files with 5 additions and 0 deletions
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5
hw/net/vmxnet3.c
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@ -1658,6 +1658,10 @@ static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
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 @@ static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
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;