feat(input/linux): allow ds5 gamepads to have a fixed device mac based on controller index (#4158)

docs/configuration.md

@@ -416,6 +416,30 @@ editing the `conf` file in a text editor. Use the examples as reference.
     </tr>
 </table>
 
+### ds5_inputtino_randomize_mac
+
+<table>
+    <tr>
+        <td>Description</td>
+        <td colspan="2">
+            Randomize the MAC-Address for the generated virtual controller.
+            @hint{Only applies on linux for gamepads created as PS5-style controllers}
+        </td>
+    </tr>
+    <tr>
+        <td>Default</td>
+        <td colspan="2">@code{}
+            enabled
+            @endcode</td>
+    </tr>
+    <tr>
+        <td>Example</td>
+        <td colspan="2">@code{}
+            ds5_inputtino_randomize_mac = enabled
+            @endcode</td>
+    </tr>
+</table>
+
 ### back_button_timeout
 
 <table>

src/config.cpp

@@ -1216,6 +1216,7 @@ namespace config {
     bool_f(vars, "ds4_back_as_touchpad_click", input.ds4_back_as_touchpad_click);
     bool_f(vars, "motion_as_ds4", input.motion_as_ds4);
     bool_f(vars, "touchpad_as_ds4", input.touchpad_as_ds4);
+    bool_f(vars, "ds5_inputtino_randomize_mac", input.ds5_inputtino_randomize_mac);
 
     bool_f(vars, "mouse", input.mouse);
     bool_f(vars, "keyboard", input.keyboard);

src/config.h

@@ -193,6 +193,7 @@ namespace config {
     bool ds4_back_as_touchpad_click;
     bool motion_as_ds4;
     bool touchpad_as_ds4;
+    bool ds5_inputtino_randomize_mac;
 
     bool keyboard;
     bool mouse;

src/platform/linux/input/inputtino_gamepad.cpp

@@ -42,8 +42,15 @@ namespace platf::gamepad {
                                             .version = 0x8111});
   }
 
-  auto create_ds5() {
+  auto create_ds5(int globalIndex) {
-    return inputtino::PS5Joypad::create({.name = "Sunshine PS5 (virtual) pad", .vendor_id = 0x054C, .product_id = 0x0CE6, .version = 0x8111});
+    std::string device_mac = "";  // Inputtino checks empty() to generate a random MAC
+
+    if (!config::input.ds5_inputtino_randomize_mac && globalIndex >= 0 && globalIndex <= 255) {
+      // Generate private virtual device MAC based on gamepad globalIndex between 0 (00) and 255 (ff)
+      device_mac = std::format("02:00:00:00:00:{:02x}", globalIndex);
+    }
+
+    return inputtino::PS5Joypad::create({.name = "Sunshine PS5 (virtual) pad", .vendor_id = 0x054C, .product_id = 0x0CE6, .version = 0x8111, .device_phys = device_mac, .device_uniq = device_mac});
   }
 
   int alloc(input_raw_t *raw, const gamepad_id_t &id, const gamepad_arrival_t &metadata, feedback_queue_t feedback_queue) {
@@ -138,7 +145,7 @@ namespace platf::gamepad {
         }
       case DualSenseWired:
         {
-          auto ds5 = create_ds5();
+          auto ds5 = create_ds5(id.globalIndex);
           if (ds5) {
             (*ds5).set_on_rumble(on_rumble_fn);
             (*ds5).set_on_led([feedback_queue, idx = id.clientRelativeIndex, gamepad](int r, int g, int b) {
@@ -267,7 +274,7 @@ namespace platf::gamepad {
       return gps;
     }
 
-    auto ds5 = create_ds5();
+    auto ds5 = create_ds5(-1);  // Index -1 will result in a random MAC virtual device, which is fine for probing
     auto switchPro = create_switch();
     auto xOne = create_xbox_one();
 

src_assets/common/assets/web/configs/tabs/Inputs.vue

@@ -89,6 +89,32 @@ const config = ref(props.config)
           </div>
         </div>
       </template>
+      <template v-if="config.gamepad === 'ds5' || (config.gamepad === 'auto' && platform === 'linux')">
+        <div class="mb-3 accordion">
+          <div class="accordion-item">
+            <h2 class="accordion-header">
+              <button class="accordion-button" type="button" data-bs-toggle="collapse"
+                      data-bs-target="#panelsStayOpen-collapseOne">
+                {{ $t(config.gamepad === 'ds5' ? 'config.gamepad_ds5_manual' : 'config.gamepad_auto') }}
+              </button>
+            </h2>
+            <div id="panelsStayOpen-collapseOne" class="accordion-collapse collapse show"
+                 aria-labelledby="panelsStayOpen-headingOne">
+              <div class="accordion-body">
+                <!-- Controller MAC randomization (Linux only) -->
+                <template v-if="config.gamepad === 'ds5' || (config.gamepad === 'auto' && platform === 'linux')">
+                  <Checkbox class="mb-3"
+                            id="ds5_inputtino_randomize_mac"
+                            locale-prefix="config"
+                            v-model="config.ds5_inputtino_randomize_mac"
+                            default="true"
+                  ></Checkbox>
+                </template>
+              </div>
+            </div>
+          </div>
+        </div>
+      </template>
     </template>
 
     <!-- Home/Guide Button Emulation Timeout -->

src_assets/common/assets/web/public/assets/locale/en.json

@@ -195,6 +195,8 @@
     "dd_wa_hdr_toggle_delay": "High-contrast workaround for HDR",
     "ds4_back_as_touchpad_click": "Map Back/Select to Touchpad Click",
     "ds4_back_as_touchpad_click_desc": "When forcing DS4 emulation, map Back/Select to Touchpad Click",
+    "ds5_inputtino_randomize_mac": "Randomize virtual controller MAC",
+    "ds5_inputtino_randomize_mac_desc": "Upon controller registration use a random MAC instead of one based on the controllers internal index to avoid mixing configuration settings of different controllers when the are swapped on client-side.",
     "encoder": "Force a Specific Encoder",
     "encoder_desc": "Force a specific encoder, otherwise Sunshine will select the best available option. Note: If you specify a hardware encoder on Windows, it must match the GPU where the display is connected.",
     "encoder_software": "Software",
@@ -213,6 +215,7 @@
     "gamepad_ds4": "DS4 (PS4)",
     "gamepad_ds4_manual": "DS4 selection options",
     "gamepad_ds5": "DS5 (PS5)",
+    "gamepad_ds5_manual": "DS5 selection options",
     "gamepad_switch": "Nintendo Pro (Switch)",
     "gamepad_manual": "Manual DS4 options",
     "gamepad_x360": "X360 (Xbox 360)",