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sysfs: add link_layer property to InfiniBandPort #700

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sysfs: add link_layer property to InfiniBandPort #700

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c8d9900
sysfs: add link_layer property to InfiniBandPort
thomasbarrett Feb 26, 2025
ff88000
Update sysfs/class_infiniband.go
thomasbarrett Oct 7, 2025
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8 changes: 8 additions & 0 deletions sysfs/class_infiniband.go
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Original file line number Diff line number Diff line change
Expand Up @@ -109,6 +109,7 @@ type InfiniBandHwCounters struct {
type InfiniBandPort struct {
Name string
Port uint
LinkLayer string // String representation from /sys/class/infiniband/<Name>/ports/<Port>/link_layer
State string // String representation from /sys/class/infiniband/<Name>/ports/<Port>/state
StateID uint // ID from /sys/class/infiniband/<Name>/ports/<Port>/state
PhysState string // String representation from /sys/class/infiniband/<Name>/ports/<Port>/phys_state
Expand Down Expand Up @@ -248,6 +249,13 @@ func (fs FS) parseInfiniBandPort(name string, port string) (*InfiniBandPort, err
ibp := InfiniBandPort{Name: name, Port: uint(portNumber)}

portPath := fs.sys.Path(infinibandClassPath, name, "ports", port)

linkLayer, err := os.ReadFile(filepath.Join(portPath, "link_layer"))
if err != nil {
return nil, err
}
ibp.LinkLayer = strings.TrimSpace(string(linkLayer))

content, err := os.ReadFile(filepath.Join(portPath, "state"))
if err != nil {
return nil, err
Expand Down
4 changes: 4 additions & 0 deletions sysfs/class_infiniband_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,7 @@ func TestInfiniBandClass(t *testing.T) {
HCAType: "",
Ports: map[uint]InfiniBandPort{
1: {
LinkLayer: "InfiniBand",
Name: "hfi1_0",
Port: 1,
State: "ACTIVE",
Expand Down Expand Up @@ -210,6 +211,7 @@ func TestInfiniBandClass(t *testing.T) {
HCAType: "MT4099",
Ports: map[uint]InfiniBandPort{
1: {
LinkLayer: "InfiniBand",
Name: "mlx4_0",
Port: 1,
State: "ACTIVE",
Expand Down Expand Up @@ -238,6 +240,7 @@ func TestInfiniBandClass(t *testing.T) {
},
},
2: {
LinkLayer: "InfiniBand",
Name: "mlx4_0",
Port: 2,
State: "ACTIVE",
Expand Down Expand Up @@ -274,6 +277,7 @@ func TestInfiniBandClass(t *testing.T) {
HCAType: "MT4118",
Ports: map[uint]InfiniBandPort{
1: {
LinkLayer: "InfiniBand",
Name: "mlx5_0",
Port: 1,
State: "ACTIVE",
Expand Down
21 changes: 21 additions & 0 deletions testdata/fixtures.ttar
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Original file line number Diff line number Diff line change
Expand Up @@ -5748,6 +5748,11 @@ Lines: 1
0
Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/hfi1_0/ports/1/link_layer
Lines: 1
InfiniBand
Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/hfi1_0/ports/1/phys_state
Lines: 1
5: LinkUp
Expand Down Expand Up @@ -5875,6 +5880,11 @@ Lines: 1
0
Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/mlx4_0/ports/1/link_layer
Lines: 1
InfiniBand
Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/mlx4_0/ports/1/phys_state
Lines: 1
5: LinkUp
Expand Down Expand Up @@ -5979,6 +5989,12 @@ Mode: 644
Path: fixtures/sys/class/infiniband/mlx4_0/ports/2/counters/symbol_error
Lines: 1
0
Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/mlx4_0/ports/2/link_layer
Lines: 2
InfiniBand

Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/mlx4_0/ports/2/phys_state
Expand Down Expand Up @@ -6256,6 +6272,11 @@ Lines: 1
742114
Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/mlx5_0/ports/1/link_layer
Lines: 1
InfiniBand
Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: fixtures/sys/class/infiniband/mlx5_0/ports/1/phys_state
Lines: 1
4: ACTIVE
Expand Down