Change in pysim[master]: utils.py: Add helper method to parse ePDG Selection info TLV

[herlesupreeth]

Hello Jenkins Builder, 

I'd like you to reexamine a change. Please visit

    https://gerrit.osmocom.org/c/pysim/+/20816

to look at the new patch set (#2).

Change subject: utils.py: Add helper method to parse ePDG Selection info TLV
......................................................................

utils.py: Add helper method to parse ePDG Selection info TLV

ePDG selection information TLV data object is made of following elements:

ePDG Selection Information Tag '80' (1 Byte)
Length 5n Note
PLMN 1 (3 Bytes)
ePDG Priority (2 Bytes)
ePDG FQDN format '00' or '01' (1 Byte)
...

PLMN n
...

Note: The length is coded according to ISO/IEC 8825-1 [35]

Note 2: Inconsistency in spec: 3GPP TS 31.102 version 15.2.0 Release 15, 4.2.104

As per spec, Length field value is 5n, where n is number of PLMNs
But, each PLMN entry is made of PLMN (3 Bytes) + ePDG Priority (2 Bytes) + ePDG FQDN format (1 Byte)
Totalling to 6 Bytes, maybe Length should be 6n and not 5n

Change-Id: I0f9f38961a589e3f9a53d2288a3dc6fa71a4b1b0
---
M pySim/utils.py
1 file changed, 54 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/16/20816/2
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Gerrit-Project: pysim
Gerrit-Branch: master
Gerrit-Change-Id: I0f9f38961a589e3f9a53d2288a3dc6fa71a4b1b0
Gerrit-Change-Number: 20816
Gerrit-PatchSet: 2
Gerrit-Owner: herlesupreeth <herlesupreeth at gmail.com>
Gerrit-Reviewer: Jenkins Builder
Gerrit-MessageType: newpatchset
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