rs-pfcp 0.4.0

High-performance Rust implementation of PFCP (Packet Forwarding Control Protocol) for 5G networks with 100% 3GPP TS 29.244 Release 18 compliance
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76

// src/ie/downlink_data_service_information.rs

//! Downlink Data Service Information IE and its flags.

use crate::error::PfcpError;
use crate::ie::IeType;

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct DownlinkDataServiceInformation {
    pub ppi: bool,  // Paging Policy Indication
    pub qfii: bool, // QoS Flow Identifier Indication
}

impl DownlinkDataServiceInformation {
    pub fn new(ppi: bool, qfii: bool) -> Self {
        DownlinkDataServiceInformation { ppi, qfii }
    }

    pub fn marshal(&self) -> [u8; 1] {
        let mut data = [0; 1];
        if self.ppi {
            data[0] |= 1;
        }
        if self.qfii {
            data[0] |= 1 << 1;
        }
        data
    }

    pub fn unmarshal(data: &[u8]) -> Result<Self, PfcpError> {
        if data.is_empty() {
            return Err(PfcpError::invalid_length(
                "Downlink Data Service Information",
                IeType::DownlinkDataServiceInformation,
                1,
                0,
            ));
        }
        Ok(DownlinkDataServiceInformation {
            ppi: data[0] & 1 != 0,
            qfii: data[0] & (1 << 1) != 0,
        })
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_downlink_data_service_information_marshal_unmarshal() {
        let ddsi = DownlinkDataServiceInformation::new(true, false);
        let marshaled = ddsi.marshal();
        let unmarshaled = DownlinkDataServiceInformation::unmarshal(&marshaled).unwrap();
        assert_eq!(unmarshaled, ddsi);

        let ddsi = DownlinkDataServiceInformation::new(false, true);
        let marshaled = ddsi.marshal();
        let unmarshaled = DownlinkDataServiceInformation::unmarshal(&marshaled).unwrap();
        assert_eq!(unmarshaled, ddsi);

        let ddsi = DownlinkDataServiceInformation::new(true, true);
        let marshaled = ddsi.marshal();
        let unmarshaled = DownlinkDataServiceInformation::unmarshal(&marshaled).unwrap();
        assert_eq!(unmarshaled, ddsi);
    }

    #[test]
    fn test_downlink_data_service_information_unmarshal_invalid_data() {
        let data = [];
        let result = DownlinkDataServiceInformation::unmarshal(&data);
        assert!(result.is_err());
        let err = result.unwrap_err();
        assert!(matches!(err, PfcpError::InvalidLength { .. }));
    }
}