[PATCH] mbim-network: query ready status and registration state before connecting

[Shawn J. Goff]

From: "Shawn J. Goff" <shawn.goff at accelecon.com>

Some modems (such as the 340u) requre these two queries before it
will attach to the packet service.

Signed-off-by: Shawn J. Goff <shawn.goff at accelecon.com>
---

As promised...

This patch does the dumbest thing possible, so there are a couple of not-perfect things:
1) There is now repeated code of build-command->echo-command->do-command->grab-trid. This could go into a function.
2) We could poll the ready-status and registration-state until they're good (with a reasonable timeout)

Let me know if you'd like either of those two things addressed or if you see any other problems.

 utils/mbim-network | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/utils/mbim-network b/utils/mbim-network
index 4b4ed41..404d511 100755
--- a/utils/mbim-network
+++ b/utils/mbim-network
@@ -105,7 +105,32 @@ connect ()
         clear_state
     fi
 
-    ATTACH_CMD="mbimcli -d $DEVICE --attach-packet-service --no-close"
+    SUBSCRIBER_READY_CMD="mbimcli -d $DEVICE --query-subscriber-ready-status --no-close"
+    echo "Querying subscriber ready status '$SUBSCRIBER_READY_CMD'..."
+
+    SUBSCRIBER_READY_OUT=`$SUBSCRIBER_READY_CMD`
+    echo $SUBSCRIBER_READY_OUT
+
+    # Save the new TRID
+    TRID=`echo "$SUBSCRIBER_READY_OUT" | sed -n "s/.*TRID.*'\(.*\)'.*/\1/p"`
+    if [ "x$TRID" != "x" ]; then
+        save_state "TRID" $TRID
+    fi
+
+
+    REGISTRATION_STATE_CMD="mbimcli -d $DEVICE --query-registration-state --no-open=$TRID --no-close"
+    echo "Querying registration state '$REGISTRATION_STATE_CMD'..."
+
+    REGISTRATION_STATE_OUT=`$REGISTRATION_STATE_CMD`
+    echo $REGISTRATION_STATE_OUT
+
+    # Save the new TRID
+    TRID=`echo "$REGISTRATION_STATE_OUT" | sed -n "s/.*TRID.*'\(.*\)'.*/\1/p"`
+    if [ "x$TRID" != "x" ]; then
+        save_state "TRID" $TRID
+    fi
+
+    ATTACH_CMD="mbimcli -d $DEVICE --attach-packet-service --no-open=$TRID --no-close"
     echo "Attaching to packet service with '$ATTACH_CMD'..."
 
     ATTACH_OUT=`$ATTACH_CMD`
-- 
1.8.2.3