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Code Issues

uqmi: add illegal SIM state recovery

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On some network-triggered disconnections the UIM state might end up in
"illegal". This prevents the modem from attaching to any network in
non-restricted service modes.

Detect this state and reset the SIM card. This way, the modem can attach
to networks again.

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer 2023-10-07 22:27:03 +02:00
parent ead0c19348
commit 696c9f723d
1 changed files with 31 additions and 0 deletions
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31
package/network/utils/uqmi/files/lib/netifd/proto/qmi.sh
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@ -98,6 +98,37 @@ proto_qmi_setup() {
fi
done
# Check if UIM application is stuck in illegal state
local uim_state_timeout=0
while true; do
json_load "$(uqmi -s -d "$device" --uim-get-sim-state)"
json_get_var card_application_state card_application_state
# SIM card is either completely absent or state is labeled as illegal
# Try to power-cycle the SIM card to recover from this state
if [ -z "$card_application_state" -o "$card_application_state" = "illegal" ]; then
echo "SIM in illegal state - Power-cycling SIM"
# Try to reset SIM application
uqmi -d "$device" --uim-power-off --uim-slot 1
sleep 3
uqmi -d "$device" --uim-power-on --uim-slot 1
if [ "$uim_state_timeout" -lt "$timeout" ] || [ "$timeout" = "0" ]; then
let uim_state_timeout++
sleep 1
continue
fi
# Recovery failed
proto_notify_error "$interface" SIM_ILLEGAL_STATE
proto_block_restart "$interface"
return 1
else
break
fi
done
if uqmi -s -d "$device" --uim-get-sim-state | grep -q '"Not supported"\|"Invalid QMI command"' &&
uqmi -s -d "$device" --get-pin-status | grep -q '"Not supported"\|"Invalid QMI command"' ; then
[ -n "$pincode" ] && {