Add VRAM max bandwidth metric to GPU status

sw/nic/gpuagent/api/include/aga_gpu.hpp

@@ -404,6 +404,8 @@ typedef struct aga_gpu_vram_status_s {
     char vendor[AGA_MAX_STR_LEN + 1];
     /// VRAM size (in MB)
     uint64_t size;
+    /// VRAM max bandwidth at max memory clock (GB/s)
+    uint64_t max_bandwidth;
 } aga_gpu_vram_status_t;
 
 /// \brief GPU page status

sw/nic/gpuagent/api/smi/amdsmi/smi_api.cc

@@ -763,6 +763,7 @@ smi_gpu_fill_status (aga_gpu_handle_t gpu_handle, uint32_t gpu_id,
         }
         status->xgmi_status.width = metrics_info.xgmi_link_width;
         status->xgmi_status.speed = metrics_info.xgmi_link_speed;
+        status->vram_status.max_bandwidth = metrics_info.vram_max_bandwidth;
     } else {
         AGA_TRACE_ERR("Failed to get GPU metrics info for GPU {}, err {}",
                       gpu_handle, amdsmi_ret);

sw/nic/gpuagent/api/smi/smi_api_mock.cc

@@ -245,6 +245,8 @@ smi_gpu_fill_status (aga_gpu_handle_t gpu_handle, uint32_t gpu_id,
     status->vram_status.type = AGA_VRAM_TYPE_HBM;
     strcpy(status->vram_status.vendor, "hynix");
     status->vram_status.size = 196592;
+    // fill VRAM max bandwidth mock value
+    status->vram_status.max_bandwidth = 3276800;
     // fill the xgmi error count
     status->xgmi_status.error_status = AGA_GPU_XGMI_STATUS_NO_ERROR;
     // fill total memory

sw/nic/gpuagent/cli/cmd/gpu.go

@@ -1042,6 +1042,11 @@ func printGPUStatus(gpu *aga.GPU, statusOnly bool) {
 			fmt.Printf(indent+"  %-36s : %v\n", "VRAM size (in MB)",
 				vram.GetSize_())
 		}
+		if vram.GetMaxBandwidth() != 0 {
+			printVRAMStatusHdr(indent)
+			fmt.Printf(indent+"  %-36s : %d\n", "VRAM max bandwidth (in GB/s)",
+				vram.GetMaxBandwidth())
+		}
 	}
 	if statusOnly {
 		fmt.Printf("\n%s\n", strings.Repeat("-", 90))

sw/nic/gpuagent/protos/gpu.proto

@@ -322,11 +322,13 @@ enum GPUThrottlingStatus {
 
 message GPUVRAMStatus {
   // VRAM memory type
-  VRAMType   Type   = 1;
+  VRAMType   Type            = 1;
   // VRAM vendor
-  string     Vendor = 2;
+  string     Vendor          = 2;
   // VRAM size (in MB)
-  uint64     Size   = 3;
+  uint64     Size            = 3;
+  // VRAM max bandwidth at max memory clock (GB/s)
+  uint64     MaxBandwidth    = 4;
 }
 
 // GPU page status

sw/nic/gpuagent/svc/gpu_to_proto.hpp

@@ -366,6 +366,7 @@ aga_gpu_vram_status_to_proto (GPUVRAMStatus *proto_status,
     proto_status->set_type(aga_gpu_vram_type_to_proto(status->type));
     proto_status->set_vendor(status->vendor);
     proto_status->set_size(status->size);
+    proto_status->set_maxbandwidth(status->max_bandwidth);
 }
 
 static inline amdgpu::GPUPageStatus