projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 395e912e LE |
1 | /** @file\r |
| 2 | \r | |
| 3 | Implementation of the SNP.Start() function and its private helpers if any.\r | |
| 4 | \r | |
| 5 | Copyright (C) 2013, Red Hat, Inc.\r | |
| 6 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r | |
| 7 | \r | |
| 8 | This program and the accompanying materials are licensed and made available\r | |
| 9 | under the terms and conditions of the BSD License which accompanies this\r | |
| 10 | distribution. The full text of the license may be found at\r | |
| 11 | http://opensource.org/licenses/bsd-license.php\r | |
| 12 | \r | |
| 13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT\r | |
| 14 | WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 15 | \r | |
| 16 | **/\r | |
| 17 | \r | |
| 18 | #include <Library/UefiBootServicesTableLib.h>\r | |
| 19 | \r | |
| 20 | #include "VirtioNet.h"\r | |
| 21 | \r | |
| 22 | /**\r | |
| 23 | Changes the state of a network interface from "stopped" to "started".\r | |
| 24 | \r | |
| 25 | @param This Protocol instance pointer.\r | |
| 26 | \r | |
| 27 | @retval EFI_SUCCESS The network interface was started.\r | |
| 28 | @retval EFI_ALREADY_STARTED The network interface is already in the started\r | |
| 29 | state.\r | |
| 30 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an\r | |
| 31 | unsupported value.\r | |
| 32 | @retval EFI_DEVICE_ERROR The command could not be sent to the network\r | |
| 33 | interface.\r | |
| 34 | @retval EFI_UNSUPPORTED This function is not supported by the network\r | |
| 35 | interface.\r | |
| 36 | **/\r | |
| 37 | \r | |
| 38 | EFI_STATUS\r | |
| 39 | EFIAPI\r | |
| 40 | VirtioNetStart (\r | |
| 41 | IN EFI_SIMPLE_NETWORK_PROTOCOL *This\r | |
| 42 | )\r | |
| 43 | {\r | |
| 44 | VNET_DEV *Dev;\r | |
| 45 | EFI_TPL OldTpl;\r | |
| 46 | EFI_STATUS Status;\r | |
| 47 | \r | |
| 48 | if (This == NULL) {\r | |
| 49 | return EFI_INVALID_PARAMETER;\r | |
| 50 | }\r | |
| 51 | \r | |
| 52 | Dev = VIRTIO_NET_FROM_SNP (This);\r | |
| 53 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
| 54 | if (Dev->Snm.State != EfiSimpleNetworkStopped) {\r | |
| 55 | Status = EFI_ALREADY_STARTED;\r | |
| 56 | }\r | |
| 57 | else {\r | |
| 58 | Dev->Snm.State = EfiSimpleNetworkStarted;\r | |
| 59 | Status = EFI_SUCCESS;\r | |
| 60 | }\r | |
| 61 | \r | |
| 62 | gBS->RestoreTPL (OldTpl);\r | |
| 63 | return Status;\r | |
| 64 | }\r |