From 315af1718028f3e2af66f414396bd5ed5d56f7f8 Mon Sep 17 00:00:00 2001
From: Diego Sonaglia <diego.sonaglia@gmail.com>
Date: Wed, 2 Oct 2024 14:17:06 +0200
Subject: [PATCH] Add node_guid to infiniband class (#665)

---
 sysfs/class_infiniband.go      | 5 ++++-
 sysfs/class_infiniband_test.go | 1 +
 testdata/fixtures.ttar         | 5 +++++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/sysfs/class_infiniband.go b/sysfs/class_infiniband.go
index 7892c69a..39c97a26 100644
--- a/sysfs/class_infiniband.go
+++ b/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 --git a/sysfs/class_infiniband_test.go b/sysfs/class_infiniband_test.go
index 461e2805..c61e8bfb 100644
--- a/sysfs/class_infiniband_test.go
+++ b/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 --git a/testdata/fixtures.ttar b/testdata/fixtures.ttar
index f2bd5e56..9f05da58 100644
--- a/testdata/fixtures.ttar
+++ b/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 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -