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[SMF] Added Bi-Directional Flow (#2909)

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For bi-directions, the rules are created in the same form as for downlink
as shown below, so to apply them for uplink, we need to swap the rules
according to the interface.

RX : permit out from <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT> to <UE_IP> <UE_PORT>
GX : permit out from <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT> to <UE_IP> <UE_PORT>
PFCP : permit out from <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT> to <UE_IP> <UE_PORT>
RULE : Source <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT> Destination <UE_IP> <UE_PORT>
TFT : Local <UE_IP> <UE_PORT> REMOTE <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT>

RX : permit in from <UE_IP> <UE_PORT> to <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT>
GX : permit out from <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT> to <UE_IP> <UE_PORT>
PFCP : permit out from <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT> to <UE_IP> <UE_PORT>
RULE : Source <UE_IP> <UE_PORT> Destination <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT>
TFT : Local <UE_IP> <UE_PORT> REMOTE <P-CSCF_RTP_IP> <P-CSCF_RTP_PORT>
This commit is contained in:
Sukchan Lee
2024-02-17 20:40:08 +01:00
parent 843c4950ac
commit 41d8934677
19 changed files with 1037 additions and 138 deletions
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42
lib/proto/types.h
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2019-2023 by Sukchan Lee <acetcom@gmail.com>
* Copyright (C) 2019-2024 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
@@ -459,9 +459,40 @@ typedef struct ogs_qos_s {
int ogs_check_qos_conf(ogs_qos_t *qos);
/**********************************
* Flow Structure */
* TS29.212
* Ch 5.3.65 Flow-Direction AVP
*
* The Flow-Direction AVP (AVP code 1080) is of type Enumerated.
* It indicates the direction/directions that a filter is applicable,
* downlink only, uplink only or both down- and uplink (bidirectional).
*
* UNSPECIFIED (0)
* The corresponding filter applies for traffic to the UE (downlink),
* but has no specific direction declared. The service data flow detection
* shall apply the filter for uplink traffic as if the filter was
* bidirectional. The PCRF shall not use the value UNSPECIFIED
* in filters created by the network in NW-initiated procedures.
* The PCRF shall only include the value UNSPECIFIED in filters
* in UE-initiated procedures if the same value is received from
* in the CCR request from the PCEF.
*
* DOWNLINK (1)
* The corresponding filter applies for traffic to the UE.
*
* UPLINK (2)
* The corresponding filter applies for traffic from the UE.
*
* BIDIRECTIONAL (3)
* The corresponding filter applies for traffic both to and from the UE.
*
* NOTE: The corresponding filter data is unidirectional. The filter
* for the opposite direction has the same parameters, but having
* the source and destination address/port parameters swapped.
*/
#define OGS_FLOW_UNSPECIFIED 0
#define OGS_FLOW_DOWNLINK_ONLY 1
#define OGS_FLOW_UPLINK_ONLY 2
#define OGS_FLOW_BIDIRECTIONAL 3
typedef struct ogs_flow_s {
uint8_t direction;
char *description;
@@ -477,7 +508,11 @@ typedef struct ogs_flow_s {
} while(0)
/**********************************
* PCC Rule Structure */
* TS29.212
* Ch 5.3.2 Charging-Rule-Install AVP
*
* PCC Rule Structure
*/
typedef struct ogs_pcc_rule_s {
#define OGS_PCC_RULE_TYPE_INSTALL 1
#define OGS_PCC_RULE_TYPE_REMOVE 2
@@ -491,6 +526,7 @@ typedef struct ogs_pcc_rule_s {
int flow_status;
uint32_t precedence;
uint32_t rating_group;
ogs_qos_t qos;
} ogs_pcc_rule_t;