Hi Redouane,
So the spec says, ME PDN ACT can come even for an implicit context
activation request associated with CGATT, which is the case with EPS.
For 3G, if this happens (ME PDN ACT) for UE initiated activation of
context, then the cid is already set with CGDCONT.
For EPS this can happen for default context, where cid is not set with
CGDCONT, but is in the range as returned by CGDCONT.
Here the cid issue, because cid is managed by ofono and is never
communicated to modem. Probably to avoid sending too many CGDCONT's
during startup. or is it something else?
I thought the default context activation will come to TE as NW ACT, with
a cid not in range of CGDCONT.
Exactly so the idea to avoid any issue was to call ofono_gprs_set_cid_range
from the driver with a range which doesn't include the CID used for initial EPS
context.
Normaly we know from the modem vendor which CID will be used for the initial
EPS context.
For instance if +CGDSCONT=? Is returning 1-25 as range then we call
ofono_gprs_set_cid_range with 2-25 as range assuming that CID 1 will be used
for the initial EPS context.
Ok so you are assuming that cid 1 will be always used for default
context, and so this is work around for the issue.
Instead we could also expect it to have a unique id.
I still feel that the default context should be a NW initiated context
and will have a unique cid.
Also why can't the context id management be done in modem instead of ofono?
Regards
Arun
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