sgsnemu: Make use of "dependon" feature in gengetopt
The gengetopt syntax can specify that a particular command line argument
depends on some other argument/option present. We can use this to
provide useful feedback to the user at the command line parsing state,
like --pingrate making no sense without --pinghost being specified.
Change-Id: Ief27275e90e6bce23aed1e83874dbac98dd0926b
diff --git a/sgsnemu/cmdline.ggo b/sgsnemu/cmdline.ggo
index 7592eb5..8136d3a 100644
--- a/sgsnemu/cmdline.ggo
+++ b/sgsnemu/cmdline.ggo
@@ -50,16 +50,17 @@
option "pwd" p "Login password" string default="hemmelig" no
option "createif" - "Create local network interface" flag off
-option "net" n "Network address for local interface" string no
-option "defaultroute" - "Create default route" flag off
-option "ipup" - "Script to run after link-up" string no
-option "ipdown" - "Script to run after link-down" string no
+option "net" n "Network address for local interface" string dependon="createif" no
+option "defaultroute" - "Create default route" flag dependon="createif" off
+option "ipup" - "Script to run after link-up" string dependon="createif" no
+option "ipdown" - "Script to run after link-down" string dependon="createif" no
option "tun-device" - "Name of the local network interface" string dependon="createif" no
option "pinghost" - "Ping remote host" string no
-option "pingrate" - "Number of ping req per second" int default="1" no
-option "pingsize" - "Number of ping data bytes" int default="56" no
-option "pingcount" - "Number of ping req to send" int default="0" no
-option "pingquiet" - "Do not print ping packet info" flag off
+option "pingrate" - "Number of ping req per second" int default="1" dependon="pinghost" no
+option "pingsize" - "Number of ping data bytes" int default="56" dependon="pinghost" no
+option "pingcount" - "Number of ping req to send" int default="0" dependon="pinghost" no
+option "pingquiet" - "Do not print ping packet info" flag dependon="pinghost" off
+
option "no-tx-gpdu-seq" - "Don't transmit G-PDU sequence nums" flag off
option "pdp-type" t "PDP Type" string default="v4" no typestr="(v4|v6)"