diff --git a/local/recipes/drivers/redbear-iwlwifi/source/src/linux_port.c b/local/recipes/drivers/redbear-iwlwifi/source/src/linux_port.c
index 2ee6134e20..27c0d04629 100644
--- a/local/recipes/drivers/redbear-iwlwifi/source/src/linux_port.c
+++ b/local/recipes/drivers/redbear-iwlwifi/source/src/linux_port.c
@@ -2716,3 +2716,44 @@ int rb_iwlwifi_bridge_tx_submit(const uint8_t *data, size_t len)
 
     return 0;
 }
+
+/*
+ * Firmware host-command dispatch (recovered from commit b22fa7e24c "wire
+ * mac80211 callbacks to firmware command transport"; the definition had been
+ * lost from linux_port.c while the extern decl + call sites remained in the
+ * Rust MLD layer, causing an undefined-reference link failure). Signature
+ * matches the Rust extern in src/mld/mod.rs: (dev, wide_id, payload, len)->i32.
+ */
+int rb_iwlwifi_send_hcmd(struct pci_dev *dev, unsigned int wide_id,
+                         const void *payload, int len)
+{
+    struct iwl_trans_pcie *trans;
+    struct {
+        struct rb_iwl_cmd_hdr hdr;
+        u8 data[256];
+    } cmd_buf;
+    int rc;
+
+    if (!dev || !payload || len <= 0 || len > 256)
+        return -EINVAL;
+
+    mutex_lock(&rb_iwlwifi_transport_lock);
+    rc = rb_iwlwifi_require_transport(dev, &trans);
+    if (rc)
+        goto out;
+    rc = rb_iwlwifi_full_init_locked(trans, 0, 0, NULL, NULL);
+    if (rc)
+        goto out;
+
+    memset(&cmd_buf, 0, sizeof(cmd_buf));
+    cmd_buf.hdr.id = wide_id;
+    cmd_buf.hdr.len = (u32)(sizeof(struct rb_iwl_cmd_hdr) + (unsigned int)len);
+    cmd_buf.hdr.cookie = (u32)atomic_add_return(1, &rb_iwlwifi_cmd_cookie);
+    memcpy(cmd_buf.data, payload, (size_t)len);
+
+    rc = iwl_pcie_send_cmd(trans, &cmd_buf, (int)cmd_buf.hdr.len);
+
+out:
+    mutex_unlock(&rb_iwlwifi_transport_lock);
+    return rc;
+}