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gsup.h: define newly added PCO IE 

PCO - Protocol Configuration Options 3GPP TS 24.008 / 10.5.6.3.
The PCO will be used by the osmo-epdg to pass PCO internally.
The PCO will be passed towards to the PGW in the Session Request.

Related: OS#6369
Related: osmo-gsm-manuals.git Change-Id Id912ead4e1205f84a40af6505a5ddf050d1e086d
Change-Id: I0f9de90c7c67fe194b441a9d118eba70f09afb5e
This commit is contained in:
Alexander Couzens 2024-02-22 16:28:09 +01:00 committed by pespin
parent b365b1d094
commit 3938dfba5c
3 changed files with 19 additions and 0 deletions
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1
TODO-RELEASE
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@ -20,3 +20,4 @@ gsm ABI change add T200 timer states to lapdm_datalink
gsm ABI change add UI queue to struct lapdm_datalink
gsm ADD gsup.h: struct osmo_gsup_pdp_info fields pdp_type_nr, pdp_type_org, deprecate pdp_type.
gsm ABI change gsup.h: Add field pdp_address in struct osmo_gsup_pdp_info shifts the struct, and in turn fields in struct osmo_gsup_message.
gsm ABI change gsup.h: Add field pco in struct osmo_gsup_message. Length of the struct osmo_gsup_message increase.

8
include/osmocom/gsm/gsup.h
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@ -61,6 +61,7 @@
/*! Maximum number of octets encoding MSISDN in BCD format */
#define OSMO_GSUP_MAX_MSISDN_LEN 9
#define OSMO_GSUP_MAX_CALLED_PARTY_BCD_LEN 43 /* TS 24.008 10.5.4.7 */
#define OSMO_GSUP_MAX_PCO_LEN 251
/*! Information Element Identifiers for GSUP IEs */
enum osmo_gsup_iei {
@ -80,6 +81,7 @@ enum osmo_gsup_iei {
OSMO_GSUP_ACCESS_POINT_NAME_IE = 0x12,
OSMO_GSUP_PDP_QOS_IE = 0x13,
OSMO_GSUP_CHARG_CHAR_IE = 0x14,
OSMO_GSUP_PCO_IE = 0x15,
OSMO_GSUP_RAND_IE = 0x20,
OSMO_GSUP_SRES_IE = 0x21,
OSMO_GSUP_KC_IE = 0x22,
@ -406,6 +408,12 @@ struct osmo_gsup_message {
enum osmo_rat_type current_rat_type;
enum osmo_rat_type supported_rat_types[8]; /*!< arbitrary choice */
size_t supported_rat_types_len;
/*! PCO protocol option 3GPP TS 24.008 10.5.6.3 / Table 10.5.136. PCO contains Octet 3-ZA */
const uint8_t *pco;
/*! Number of bytes of the PCO. */
size_t pco_len;
};
int osmo_gsup_decode(const uint8_t *data, size_t data_len,

10
src/gsm/gsup.c
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@ -506,6 +506,11 @@ int osmo_gsup_decode(const uint8_t *const_data, size_t data_len,
gsup_msg->rand = value;
break;
case OSMO_GSUP_PCO_IE:
gsup_msg->pco = value;
gsup_msg->pco_len = value_len;
break;
case OSMO_GSUP_MSISDN_IE:
gsup_msg->msisdn_enc = value;
gsup_msg->msisdn_enc_len = value_len;
@ -872,6 +877,11 @@ int osmo_gsup_encode(struct msgb *msg, const struct osmo_gsup_message *gsup_msg)
if (gsup_msg->rand)
msgb_tlv_put(msg, OSMO_GSUP_RAND_IE, 16, gsup_msg->rand);
if (gsup_msg->pco && gsup_msg->pco_len > 0) {
if (gsup_msg->pco_len > OSMO_GSUP_MAX_PCO_LEN)
return -EINVAL;
msgb_tlv_put(msg, OSMO_GSUP_PCO_IE, gsup_msg->pco_len, gsup_msg->pco);
}
if (gsup_msg->cn_domain) {
uint8_t dn = gsup_msg->cn_domain;
msgb_tlv_put(msg, OSMO_GSUP_CN_DOMAIN_IE, 1, &dn);