Add LL1 Serving Cell Timing messages

This log should provide constant feedback about the serving cell's LTE
timing advance value.

lib/src/analysis/analyzer.rs

@@ -430,17 +430,14 @@ impl Harness {
                 return row;
             }
         };
-        let gsmtap_message = match gsmtap_parser::parse(qmdl_message) {
-            Ok(msg) => msg,
+        let (timestamp, gsmtap_msg) = match gsmtap_parser::parse(qmdl_message) {
+            Ok(Some(msg)) => msg,
+            Ok(None) => return row,
             Err(err) => {
                 row.skipped_message_reason = Some(format!("{err:?}"));
                 return row;
             }
         };
-
-        let Some((timestamp, gsmtap_msg)) = gsmtap_message else {
-            return row;
-        };
         row.packet_timestamp = Some(timestamp.to_datetime());
 
         let element = match InformationElement::try_from(&gsmtap_msg) {

lib/src/diag/diaglog/ll1.rs

@@ -0,0 +1,33 @@
+use deku::prelude::*;
+
+#[derive(Debug, Clone, PartialEq, DekuRead, DekuWrite)]
+#[deku(bit_order = "lsb", ctx = "_: deku::ctx::Order")]
+pub struct ServingCellTiming {
+    #[deku(assert_eq = "1")]
+    pub version: u8,
+    #[deku(bits = 5, assert = "*num_records <= 20")]
+    pub num_records: u8,
+    #[deku(bits = 4, assert = "*starting_sub_fn <= 9")]
+    pub starting_sub_fn: u8,
+    #[deku(bits = 10, pad_bits_after = "5", assert = "*starting_system_fn <= 1023")]
+    pub starting_system_fn: u16,
+    #[deku(bits = 19, pad_bits_after = "13", assert = "*starting_dl_frame_timing_offs <= 307200")]
+    pub starting_dl_frame_timing_offs: u32, // in Ts units
+    #[deku(bits = 19, assert = "*starting_ul_frame_timing_offs <= 307200")]
+    pub starting_ul_frame_timing_offs: u32, // in Ts units
+    #[deku(bits = 11, pad_bits_after = "2")]
+    pub starting_ul_timing_advance: u16, // in 16 Ts units
+    #[deku(count = "*num_records")]
+    pub timing_adjustment: Vec<TimingAdjustment>,
+}
+
+#[derive(Debug, Clone, PartialEq, DekuRead, DekuWrite)]
+#[deku(bit_order = "lsb", ctx = "_: deku::ctx::Order")]
+pub struct TimingAdjustment {
+    #[deku(bits = 11, assert = "(-512..=511).contains(dl_frame_timing_adjustment)")]
+    pub dl_frame_timing_adjustment: i16, // in Ts units
+    #[deku(bits = 5, assert = "(-16..=15).contains(ul_frame_timing_adjustment)")]
+    pub ul_frame_timing_adjustment: i8, // in Ts units
+    #[deku(bits = 8, assert = "(-128..=127).contains(timing_advance)")]
+    pub timing_advance: i8, // in 16 Ts units
+}

lib/src/diag/diaglog/mac.rs

@@ -18,7 +18,8 @@ pub struct Subpacket {
     pub id: u8,
     pub version: u8,
     pub size: u16,
-    #[deku(ctx = "*id, *version, *size")]
+    // size includes the header length, so subtract that
+    #[deku(ctx = "*id, *version, *size - 4")]
     pub body: SubpacketBody,
 }
 

lib/src/diag/diaglog/mod.rs

@@ -3,8 +3,9 @@
 use chrono::{DateTime, FixedOffset};
 use deku::prelude::*;
 
+pub mod ll1;
 pub mod mac;
-pub mod measurement;
+pub mod ml1;
 pub mod rrc;
 
 #[derive(Debug, Clone, PartialEq, DekuRead, DekuWrite)]
@@ -79,14 +80,23 @@ pub enum LogBody {
     },
     #[deku(id = "0xb17f")]
     LteMl1ServingCellMeasurementAndEvaluation {
-        data: measurement::serving_cell::MeasurementAndEvaluation,
+        data: ml1::serving_cell::MeasurementAndEvaluation,
     },
     #[deku(id = "0xb180")]
     LteMl1NeighborCellsMeasurements {
-        data: measurement::neighbor_cells::Measurements,
+        data: ml1::neighbor_cells::Measurements,
     },
     #[deku(id = "0xb062")]
     LteMacRachResponse { packet: mac::Packet },
+    #[deku(id = "0xb063")]
+    LteMacDl { packet: mac::Packet },
+    #[deku(id = "0xb064")]
+    LteMacUl { packet: mac::Packet },
+    #[deku(id = "0xb114")]
+    LteLl1ServingCellTiming {
+        #[deku(ctx = "deku::ctx::Order::Lsb0")]
+        data: ll1::ServingCellTiming,
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, DekuRead, DekuWrite)]

lib/src/diag/mod.rs

@@ -166,8 +166,9 @@ impl Message {
         match body {
             LogBody::LteRrcOtaMessage { .. } => true,
             LogBody::LteMacRachResponse { .. } => true,
+            LogBody::LteMl1NeighborCellsMeasurements { .. } => true,
             LogBody::Nas4GMessage { .. } => true,
-            _ => false,
+            _ => false
         }
     }
 }

lib/src/diag_device.rs

@@ -40,27 +40,30 @@ pub enum DiagDeviceError {
     ParseMessagesContainerError(deku::DekuError),
 }
 
-pub const LOG_CODES_FOR_RAW_PACKET_LOGGING: [u32; 14] = [
+pub const LOG_CODES_FOR_RAW_PACKET_LOGGING: [u32; 17] = [
     // Layer 2:
-    log_codes::LOG_GPRS_MAC_SIGNALLING_MESSAGE_C, // 0x5226
+    log_codes::LOG_GPRS_MAC_SIGNALLING_MESSAGE_C,
     // Layer 3:
-    log_codes::LOG_GSM_RR_SIGNALING_MESSAGE_C, // 0x512f
-    log_codes::WCDMA_SIGNALLING_MESSAGE,       // 0x412f
-    log_codes::LOG_LTE_RRC_OTA_MSG_LOG_C,      // 0xb0c0
-    log_codes::LOG_NR_RRC_OTA_MSG_LOG_C,       // 0xb821
+    log_codes::LOG_GSM_RR_SIGNALING_MESSAGE_C,
+    log_codes::WCDMA_SIGNALLING_MESSAGE,
+    log_codes::LOG_LTE_RRC_OTA_MSG_LOG_C,
+    log_codes::LOG_NR_RRC_OTA_MSG_LOG_C,
     // NAS:
-    log_codes::LOG_UMTS_NAS_OTA_MESSAGE_LOG_PACKET_C, // 0x713a
-    log_codes::LOG_LTE_NAS_ESM_OTA_IN_MSG_LOG_C,      // 0xb0e2
-    log_codes::LOG_LTE_NAS_ESM_OTA_OUT_MSG_LOG_C,     // 0xb0e3
-    log_codes::LOG_LTE_NAS_EMM_OTA_IN_MSG_LOG_C,      // 0xb0ec
-    log_codes::LOG_LTE_NAS_EMM_OTA_OUT_MSG_LOG_C,     // 0xb0ed
+    log_codes::LOG_UMTS_NAS_OTA_MESSAGE_LOG_PACKET_C,
+    log_codes::LOG_LTE_NAS_ESM_OTA_IN_MSG_LOG_C,
+    log_codes::LOG_LTE_NAS_ESM_OTA_OUT_MSG_LOG_C,
+    log_codes::LOG_LTE_NAS_EMM_OTA_IN_MSG_LOG_C,
+    log_codes::LOG_LTE_NAS_EMM_OTA_OUT_MSG_LOG_C,
     // User IP traffic:
-    log_codes::LOG_DATA_PROTOCOL_LOGGING_C, // 0x11eb
+    log_codes::LOG_DATA_PROTOCOL_LOGGING_C,
     // LTE physical layer serving cell measurements: RSRP, RSRQ, RSSI
-    log_codes::LOG_LTE_ML1_SERVING_CELL_MEAS_AND_EVAL_C, // 0xb17f
-    log_codes::LOG_LTE_ML1_NEIGHBOR_MEAS,                // 0xb180
+    log_codes::LOG_LTE_ML1_SERVING_CELL_MEAS_AND_EVAL_C,
+    log_codes::LOG_LTE_ML1_NEIGHBOR_MEAS,
     // LTE MAC Random Access Channel response: contains Timing Advance
-    log_codes::LOG_LTE_MAC_RACH_RESPONSE_C, // 0xb062
+    log_codes::LOG_LTE_MAC_RACH_RESPONSE_C,
+    log_codes::LOG_LTE_MAC_DL,
+    log_codes::LOG_LTE_MAC_UL,
+    0xb114, // maybe timing advance related?
 ];
 
 const BUFFER_LEN: usize = 1024 * 1024 * 10;

lib/src/log_codes.rs

@@ -35,6 +35,8 @@ pub const LOG_LTE_RRC_OTA_MSG_LOG_C: u32 = 0xb0c0;
 pub const LOG_LTE_ML1_SERVING_CELL_MEAS_AND_EVAL_C: u32 = 0xb17f;
 pub const LOG_LTE_ML1_SERVING_CELL_MEAS_RESPONSE: u32 = 0xb193;
 pub const LOG_LTE_ML1_NEIGHBOR_MEAS: u32 = 0xb180;
+pub const LOG_LTE_ML1_MAC_RAR_MSG1_REPORT: u32 = 0xb167;
+pub const LOG_LTE_ML1_MAC_RAR_MSG2_REPORT: u32 = 0xb168;
 // Qualcomm MAC layer RACH response log: contains Timing Advance from Random Access Response
 pub const LOG_LTE_MAC_RACH_RESPONSE_C: u32 = 0xb062;
 pub const LOG_LTE_MAC_DL: u32 = 0xb063;