[Openib-windows] RE: Anything new about the IPOIB arp check-in?

[Fab Tillier]

Hi Tzachi,

I've started applying the address translation functionality.  I've moved the
IOCTL definition to inc\iba.  I have the device object creation and destruction
worked out, and am working on the IOCTL handling.  Take a look at the IOCTL
definitions and let me know if you have any comments.  I added a new IOCTL to
allow getting the local GUID information for an input IP address.

I've been changing the code to incorporate the feedback I'd given when you first
sent this, as well as taking into account the parts that were already put in
place like the unload handler and the adapter list.

It's mostly the same as what you had with mostly structure name changes.  The
most notable difference is I removed the version member of output structures.
If the input structure doesn't have the right version, the call will fail.  I
don't see any time where the output structure's version would be different from
the input structure.  Let me know what you think of the header.

- Fab

Index: inc\iba\ib_at_ioctl.h
===================================================================
--- inc\iba\ib_at_ioctl.h	(revision 0)
+++ inc\iba\ib_at_ioctl.h	(revision 0)
@@ -0,0 +1,149 @@
/*
* Copyright (c) 2005 Mellanox Technologies.  All rights reserved.
* Copyright (c) 2005 SilverStorm Technologies.  All rights reserved.
*
* This software is available to you under the OpenIB.org BSD license
* below:
*
*     Redistribution and use in source and binary forms, with or
*     without modification, are permitted provided that the following
*     conditions are met:
*
*      - Redistributions of source code must retain the above
*        copyright notice, this list of conditions and the following
*        disclaimer.
*
*      - Redistributions in binary form must reproduce the above
*        copyright notice, this list of conditions and the following
*        disclaimer in the documentation and/or other materials
*        provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* $Id$
*/

/* This file is shared between user- and kernel-mode */

#ifndef _IB_AT_IOCTL_H_
#define _IB_AT_IOCTL_H_


#define IBAT_IOCTL_VERSION      2

#define IBAT_MAC_LEN            6


#define IOCTL_IBAT( n )     \
    CTL_CODE( FILE_DEVICE_UNKNOWN, (0x800 + n), \
        METHOD_BUFFERED, FILE_READ_ACCESS )

/** This IRP is used to return all available CAs ports number
 * and port guid */
#define IOCTL_IBAT_PORTS    IOCTL_IBAT( 1 )

typedef struct _IBAT_PORT_RECORD
{
    UINT64              CaGuid;
    UINT64              PortGuid;
} IBAT_PORT_RECORD;

typedef struct _IOCTL_IBAT_PORTS_IN
{
    ULONG               Version;

} IOCTL_IBAT_PORTS_IN;

typedef struct _IOCTL_IBAT_PORTS_OUT
{
    /** Total size, of the output buffer needed if the
     * suplied buffer wasn't enough */
    ULONG               Size;
    LONG                NumPorts;
    IBAT_PORT_RECORD    Ports[1];

} IOCTL_IBAT_PORTS_OUT;


/** This IRP is used to return all the ip addresses that
 * are assigned to a port */
#define IOCTL_IBAT_IP_ADDRESSES     IOCTL_IBAT( 2 )

typedef struct _IOCTL_IBAT_IP_ADDRESSES_IN
{
    ULONG               Version;
    /** The guid of the port that we are querying for.  May be
     * zero if querying for IP addresses of all ports. */
    UINT64              PortGuid;

} IOCTL_IBAT_IP_ADDRESSES_IN;

typedef struct _IP_ADDRESS
{
    /** Might only be 4 or 6 */
    CHAR                IpVersion;
    /** Sized to support both IPv4 and IPv6 */
    UCHAR               Address[16];

} IP_ADDRESS;

typedef struct _IOCTL_IBAT_IP_ADDRESSES_OUT
{
    /** Total size of the output buffer needed if the
     * suplied buffer wasn't enough */
    ULONG               Size;
    ULONG               AddressCount;
    IP_ADDRESS          Address[1];

} IOCTL_IBAT_IP_ADDRESSES_OUT;


/** This IRP is used to convert a remote MAC addresses to a remote GID */
#define IOCTL_IBAT_MAC_TO_GID IOCTL_IBAT( 3 )

typedef struct _IOCTL_IBAT_MAC_TO_GID_IN
{
    ULONG               Version;
    UINT64              SrcPortGuid;
    UCHAR               DestMac[IBAT_MAC_LEN];

} IOCTL_IBAT_MAC_TO_GID_IN;

typedef struct _IOCTL_IBAT_MAC_TO_GID_OUT
{
    ib_gid_t            DestGid;

} IOCTL_IBAT_MAC_TO_GID_OUT;


/** This IRP is used to convert a local IP address to a local port. */
#define IOCTL_IBAT_IP_TO_GUID   IOCTL_IBAT( 4 )

typedef struct _IOCTL_IBAT_IP_TO_GUID_IN
{
    ULONG               Version;
    IP_ADDRESS          Address;
} IOCTL_IBAT_IP_TO_GUID_IN;

typedef struct _IOCTL_IBAT_IP_TO_GUID_OUT
{
    /** Total size, of the output buffer needed if the
     * suplied buffer wasn't enough */
    ULONG                   Size;
    IBAT_PORT_RECORD        Port;
} IOCTL_IBAT_IP_TO_GUID_OUT;


#define IBAT_DEV_NAME   L"\\Device\\ibat"
#define IBAT_DOS_DEV_NAME L"\\DosDevices\\Global\\ibat"
#define IBAT_WIN32_NAME L"\\\\.\\ibat"

#endif  /* _IB_AT_IOCTL_H_ */