Add node_guid to infiniband class (#665)

Signed-off-by: Diego Sonaglia <[email protected]>

Author: di3go-sona

Diff for: sysfs/class_infiniband.go

@@ -124,6 +124,7 @@ type InfiniBandDevice struct {
 	Name            string
 	BoardID         string // /sys/class/infiniband/<Name>/board_id
 	FirmwareVersion string // /sys/class/infiniband/<Name>/fw_ver
+	NodeGUID        string // /sys/class/infiniband/<Name>/node_guid
 	HCAType         string // /sys/class/infiniband/<Name>/hca_type
 	Ports           map[uint]InfiniBandPort
 }
@@ -171,7 +172,7 @@ func (fs FS) parseInfiniBandDevice(name string) (*InfiniBandDevice, error) {
 	device.FirmwareVersion = value
 
 	// Not all InfiniBand drivers expose all of these.
-	for _, f := range [...]string{"board_id", "hca_type"} {
+	for _, f := range [...]string{"board_id", "hca_type", "node_guid"} {
 		name := filepath.Join(path, f)
 		value, err := util.SysReadFile(name)
 		if err != nil {
@@ -186,6 +187,8 @@ func (fs FS) parseInfiniBandDevice(name string) (*InfiniBandDevice, error) {
 			device.BoardID = value
 		case "hca_type":
 			device.HCAType = value
+		case "node_guid":
+			device.NodeGUID = value
 		}
 	}
 

Diff for: sysfs/class_infiniband_test.go

@@ -272,6 +272,7 @@ func TestInfiniBandClass(t *testing.T) {
 			BoardID:         "SM_2001000001034",
 			FirmwareVersion: "14.28.2006",
 			HCAType:         "MT4118",
+			NodeGUID:        "0a7f:bc12:45ef:d23b",
 			Ports: map[uint]InfiniBandPort{
 				1: {
 					Name:        "mlx5_0",

Diff for: testdata/fixtures.ttar

@@ -5525,6 +5525,11 @@ Lines: 1
 MT4118
 Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/class/infiniband/mlx5_0/node_guid
+Lines: 1
+0a7f:bc12:45ef:d23bEOF
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Directory: fixtures/sys/class/infiniband/mlx5_0/ports
 Mode: 755
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -