Hi ..
I am using a device EZLINK (usb serial device) that connects two computers
by means of usb port.
There is no problem when i transfer a file between
computers using Ezlink. I have usbstack and Ezlink class driver ( interact
with tty) installed on two system. This device is visible as a file
"/dev/ttyEzlink" with major number 180
Now i want to do PPP over Ezlink.
I tried by giving following options to pppd
$ pppd -detach noauth debug crtscts lock <local IP>:<remote IP> /dev/ttyEzlink &
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe5ca7a56> <pcomp> <accomp>]
LCP: timeout sending Config-Requests
Connection terminated.
But problem here, these LCP confReq are not at all sent to Ezlink serial
driver.
I want to know under want condition PPP calls tty->driver.write() ?
One more thing, Ioctl function is not implented in Ezlink serial driver.
Kernel version : 2.2.14
Linux PPP version : 2.3.10
Kind of Connection : USB Ezlink
Log mess :
Jul 25 15:24:58 usb modprobe: can't locate module char-major-180
Jul 25 15:24:58 usb kernel: CSLIP: code copyright 1989 Regents of the University of
California
Jul 25 15:24:58 usb kernel: registered device ppp0
Jul 25 15:24:58 usb pppd[866]: pppd 2.3.10 started by root, uid 0
Jul 25 15:24:58 usb kernel: ezlink_open port 0
Jul 25 15:24:58 usb kernel: ppp_ioctl: set flags to 10000
Jul 25 15:24:58 usb pppd[866]: Using interface ppp0
Jul 25 15:24:58 usb pppd[866]: Connect: ppp0 <--> /dev/ttyUSB0
Jul 25 15:24:58 usb kernel: ppp_tty_ioctl: set xmit asyncmap ffffffff
Jul 25 15:24:58 usb kernel: ppp_ioctl: set mru to 5dc
Jul 25 15:25:28 usb pppd[866]: LCP: timeout sending Config-Requests
Jul 25 15:25:28 usb pppd[866]: Connection terminated.
Jul 25 15:25:28 usb kernel: ppp: channel ppp0 closing.
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