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gsup: Add ePDG Tunnel Request/Error/Result messages 

These messages are used in the GSUP-based CEAI interface between
strongswan IPsec and osmo-epdg, which acts basically as a forwarding
protocol between IKEv2 on the UE side and GTPv2C S2b towards PGW + Diameter
SWm towards AAA Server.

Those fields are already present in libosmocore, GSUP reference
implementation [1].

[1] https://gitea.osmocom.org/osmocom/libosmocore/src/branch/master/include/osmocom/gsm/gsup.h#L205
This commit is contained in:
Pau Espin 2024-02-21 18:56:49 +01:00 committed by Alexis La Goutte
parent 611ed98634
commit 46123c430a
1 changed files with 7 additions and 0 deletions
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7
epan/dissectors/packet-gsm_gsup.c
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@ -183,6 +183,10 @@ enum osmo_gsup_message_type {
OSMO_GSUP_MSGT_E_ABORT = 0x4b,
OSMO_GSUP_MSGT_E_ROUTING_ERROR = 0x4e,
OSMO_GSUP_MSGT_EPDG_TUNNEL_REQUEST = 0x50,
OSMO_GSUP_MSGT_EPDG_TUNNEL_ERROR = 0x51,
OSMO_GSUP_MSGT_EPDG_TUNNEL_RESULT = 0x52,
};
#define OSMO_GSUP_IS_MSGT_REQUEST(msgt) (((msgt) & 0b00000011) == 0b00)
@ -422,6 +426,9 @@ static const value_string gsup_msg_types[] = {
{ OSMO_GSUP_MSGT_E_CLOSE, "E Close"},
{ OSMO_GSUP_MSGT_E_ABORT, "E Abort"},
{ OSMO_GSUP_MSGT_E_ROUTING_ERROR, "E Routing Error"},
{ OSMO_GSUP_MSGT_EPDG_TUNNEL_REQUEST, "ePDG Tunnel Request"},
{ OSMO_GSUP_MSGT_EPDG_TUNNEL_ERROR, "ePDG Tunnel Error"},
{ OSMO_GSUP_MSGT_EPDG_TUNNEL_RESULT, "ePDG Tunnel Result"},
{ 0, NULL }
};