Check in gVisor.

PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463

1 files changed, 86 insertions, 0 deletions

diff --git a/pkg/abi/linux/netdevice.go b/pkg/abi/linux/netdevice.go
new file mode 100644
index 000000000..88654a1b3
--- /dev/null
+++ b/pkg/abi/linux/netdevice.go
@@ -0,0 +1,86 @@
+// Copyright 2018 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package linux
+
+import "gvisor.googlesource.com/gvisor/pkg/binary"
+
+const (
+	// IFNAMSIZ is the size of the name field for IFReq.
+	IFNAMSIZ = 16
+)
+
+// IFReq is an interface request.
+type IFReq struct {
+	// IFName is an encoded name, normally null-terminated. This should be
+	// accessed via the Name and SetName functions.
+	IFName [IFNAMSIZ]byte
+
+	// Data is the union of the following structures:
+	//
+	//	struct sockaddr ifr_addr;
+	//	struct sockaddr ifr_dstaddr;
+	//	struct sockaddr ifr_broadaddr;
+	//	struct sockaddr ifr_netmask;
+	//	struct sockaddr ifr_hwaddr;
+	//	short           ifr_flags;
+	//	int             ifr_ifindex;
+	//	int             ifr_metric;
+	//	int             ifr_mtu;
+	//	struct ifmap    ifr_map;
+	//	char            ifr_slave[IFNAMSIZ];
+	//	char            ifr_newname[IFNAMSIZ];
+	//	char           *ifr_data;
+	Data [24]byte
+}
+
+// Name returns the name.
+func (ifr *IFReq) Name() string {
+	for c := 0; c < len(ifr.IFName); c++ {
+		if ifr.IFName[c] == 0 {
+			return string(ifr.IFName[:c])
+		}
+	}
+	return string(ifr.IFName[:])
+}
+
+// SetName sets the name.
+func (ifr *IFReq) SetName(name string) {
+	n := copy(ifr.IFName[:], []byte(name))
+	for i := n; i < len(ifr.IFName); i++ {
+		ifr.IFName[i] = 0
+	}
+}
+
+// SizeOfIFReq is the binary size of an IFReq struct (40 bytes).
+var SizeOfIFReq = binary.Size(IFReq{})
+
+// IFMap contains interface hardware parameters.
+type IFMap struct {
+	MemStart uint64
+	MemEnd   uint64
+	BaseAddr int16
+	IRQ      byte
+	DMA      byte
+	Port     byte
+	_        [3]byte // Pad to sizeof(struct ifmap).
+}
+
+// IFConf is used to return a list of interfaces and their addresses. See
+// netdevice(7) and struct ifconf for more detail on its use.
+type IFConf struct {
+	Len int32
+	_   [4]byte // Pad to sizeof(struct ifconf).
+	Ptr uint64
+}