Group :: System/Kernel and hardware
RPM: vblade
Navigation
Main Changelog Spec Patches Sources Download Gear Bugs and FR Repocop
vblade-14/ 0000755 0000000 0000000 00000000000 10531575620 0012137 5 ustar 00git git 0000000 0000000 vblade-14/COPYING 0000644 0000000 0000000 00000043110 10531575620 0013171 0 ustar 00git git 0000000 0000000 GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.
vblade-14/HACKING 0000644 0000000 0000000 00000001123 10531575620 0013123 0 ustar 00git git 0000000 0000000 Contributions to the vblade are welcome.
In contributing, though, please stay true to the original simplicity
of the software. Many open source projects suffer from the "creeping
feature demon" phenomenon. If you think the vblade needs a great new
feature, first seriously try to think of a way to accomplish your goal
without adding to the vblade itself.
Patches should be clean (to the point and easy to read) and should do
one thing. Send multiple patches if necessary. Patches should be
generated with "diff -uprN" if possible, and should be designed to be
applied with "patch -p1".
vblade-14/NEWS 0000644 0000000 0000000 00000005655 10531575620 0012651 0 ustar 00git git 0000000 0000000 -*- change-log -*-
2006-11-20 Sam Hopkins <sah@coraid.com>
apply contrib jumbo patch to standard distribution
add jumbo configuration app. note in README
add jumbo README reference to manpage
add mask feature; -m flag
update manpage to describe -m flag
vblade-14
2006-10-05 Sam Hopkins <sah@coraid.com>
fix confcmd memcpy bug
correct scnt return value in read/write ata response
replace O_RDONLY fallback with explicit stat. root always wins.
vblade-13
2006-10-04 Sam Hopkins <sah@coraid.com>
fix confcmd buglets
fix atacmd buglets
add atacmd handling for bad argument errors
add O_RDONLY open if O_RDWR fails
add contrib patch directory
add contrib/README
add jumbo patch to contrib
add o_direct patch to contrib
vblade-12
2006-09-21 "Adam J. Richter" <adam@yggdrasil.com>
add install target for makefile
vblade-11
2005-12-06 Ed L. Cashin <ecashin@coraid.com>
fix u64 configuration on FreeBSD
release vblade-10
2005-12-06 Valeriy Glushkov <valery@rocketdivision.com>
implemented config string support
added handler for ATA Check power mode command
2005-11-15 Ed L. Cashin <ecashin@coraid.com>
add compatibility with platforms lacking u64 (e.g., Slackware)
release vblade-9
2005-11-10 Ed L. Cashin <ecashin@coraid.com>
call atainit on program startup
put VBLADE_VERSION in dat.h and use it in firmware version
release vblade-7
include Stacey's patch to use p{read,write} on FreeBSD
include Stacey's patch to typedef ulong on FreeBSD
fix makefile dependencies (e.g., rebuild on new aoe.c)
fix config string length specification
include Stacey's patch to avoid compile warnings on FreeBSD
release vblade-8
2005-11-10 "Stacey D. Son" <sson@verio.net>
include FreeBSD support
2005-10-03 Ed L. Cashin <ecashin@coraid.com>
don't invoke vblade with dash from vbladed
2005-08-31 20:14:12 GMT Ed L. Cashin <ecashin@coraid.com>
ATA identify: don't juggle bytes in shorts on big endian arch
add manpage for vblade, vbladed
release vblade-6
2005-03-17 15:24:30 GMT Ed L. Cashin <ecashin@coraid.com>
follow up on vblade-2's off-by-one patch, making end of device usable
release vblade-5
2005-03-15 22:03:17 GMT Ed L. Cashin <ecashin@coraid.com>
don't rely on kernel headers for defining the aoe type 0x88a2
release vblade-4
2005-03-15 17:27:01 GMT Ed L. Cashin <ecashin@coraid.com>
docs: aoe-2.6-7 is the first driver to support multiple blades per mac
release vblade-3
2005-03-11 18:30:26 GMT Ed L. Cashin <ecashin@coraid.com>
put 64-bit configuration into config.h file
don't use uninitialized variables
broadcast config query on startup
clarify desired patch format in HACKING
add sah@coraid.com's vblade-1.ata.c.patch: fix off-by-one and ext LBA
add docs, remove daemonizing code from vblade
release vblade-2
2005-02-08 20:21:52 GMT Ed L. Cashin <ecashin@coraid.com>
starting documentation
add script that daemonizes vblade process, logging output
make vblade sources -Wall clean, use daemon(3)
release vblade-1
vblade-14/README 0000644 0000000 0000000 00000011132 10531575620 0013015 0 ustar 00git git 0000000 0000000
INTRODUCTION
------------
The vblade is the virtual EtherDrive (R) blade, a program that makes a
seekable file available over an ethernet local area network (LAN) via
the ATA over Ethernet (AoE) protocol.
The seekable file is typically a block device like /dev/md0 but even
regular files will work. When vblade exports the block storage over
AoE it becomes a storage target. Another host on the same LAN can
access the storage if it has a compatible aoe kernel driver.
BUILDING
--------
The following command should build the vblade program on a Linux-based
system:
make
For FreeBSD systems, include an extra parameter like so:
make PLATFORM=freebsd
EXAMPLES
--------
There is a "vbladed" script that daemonizes the program and sends its
output to the logger program. Make sure you have logger installed if
you would like to run vblade as a daemon with the vbladed script.
ecashin@kokone vblade$ echo 'I have logger' | logger
ecashin@kokone vblade$ tail -3 /var/log/messages
Feb 8 14:52:49 kokone -- MARK --
Feb 8 15:12:49 kokone -- MARK --
Feb 8 15:19:56 kokone logger: I have logger
Here is a short example showing how to export a block device with a
vblade. (This is a loop device backed by a sparse file, but you could
use any seekable file instead of /dev/loop7.)
ecashin@kokone vblade$ make
cc -Wall -c -o aoe.o aoe.c
cc -Wall -c -o linux.o linux.c
cc -Wall -c -o ata.o ata.c
cc -o vblade aoe.o linux.o ata.o
ecashin@kokone vblade$ su
Password:
root@kokone vblade# modprobe loop
root@kokone vblade# dd if=/dev/zero bs=1k count=1 seek=`expr 1024 \* 4096` of=bd
-file
1+0 records in
1+0 records out
1024 bytes transferred in 0.009901 seconds (103423 bytes/sec)
root@kokone vblade# losetup /dev/loop7 bd-file
root@kokone vblade# ./vblade 9 0 eth0 /dev/loop7
ioctl returned 0
4294968320 bytes
pid 16967: e9.0, 8388610 sectors
Here's how you can use the Linux aoe driver to access the storage from
another host on the LAN.
ecashin@kokone ecashin$ ssh makki
Last login: Mon Feb 7 10:25:04 2005
ecashin@makki ~$ su
Password:
root@makki ecashin# modprobe aoe
root@makki ecashin# aoe-stat
e9.0 eth1 up
root@makki ecashin# mkfs -t ext3 /dev/etherd/e9.0
mke2fs 1.35 (28-Feb-2004)
...
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 24 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
root@makki ecashin# mkdir /mnt/e9.0
root@makki ecashin# mount /dev/etherd/e9.0 /mnt/e9.0
root@makki ecashin# echo hooray > /mnt/e9.0/test.txt
root@makki ecashin# cat /mnt/e9.0/test.txt
hooray
Remember: be as careful with these devices as you would with /dev/hda!
Jumbo Frame Compatibility
-------------------------
Vblade can use jumbo frames provided your initiator is jumbo frame
capable. There is one small configuration gotcha to consider
to avoid having the vblade kernel frequently drop frames.
Vblade uses a raw socket to perform AoE. The linux kernel will
only buffer a certain amount of data for a raw socket. For 2.6
kernels, this value is managed through /proc:
root@nai aoe# grep . /proc/sys/net/core/rmem_*
/proc/sys/net/core/rmem_default:128000
/proc/sys/net/core/rmem_max:128000
rmem_max is the max amount a user process may expand the receive
buffer to -- through setsockopt(...) -- and rmem_default is, as you
might expect, the default.
The gotcha is that this amount to buffer does not relate
to the amount of user data buffered, but the amount of
real data buffered. As an example, the Intel GbE controller
must be given 16KB frames to use an MTU over 8KB.
For each received frame, the kernel must be able to buffer
16KB, even if the aoe frame is only 60 bytes in length.
The linux aoe initiator will use 16 outstanding frames when
used with vblade. A good default for ensuring frames are
not dropped is to allocate 16KB for 17 frames:
for f in /proc/sys/net/core/rmem_*; do echo $((17 * 16 * 1024)) >$f; done
Be sure to start vblade after changing the buffering defaults
as the buffer value is set when the socket is opened.
AoE Initiator Compatibility
---------------------------
The Linux aoe driver for the 2.6 kernel is compatible if you use
aoe-2.6-7 or newer. You can use older aoe drivers but you will only
be able to see one vblade per MAC address.
Contrib Patches
---------------
see contrib/README
Kvblade
-------
While vblade runs as a userland process (like "ls" or "vi"), there
is another program that runs inside the kernel. It is called
kvblade. It is alpha software.
vblade-14/aoe.c 0000644 0000000 0000000 00000013067 10531575620 0013056 0 ustar 00git git 0000000 0000000 // aoe.c: the ATA over Ethernet virtual EtherDrive (R) blade
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h>
#include "dat.h"
#include "fns.h"
enum {
Nmasks= 32,
Alen= 6,
};
uchar masks[Nmasks*Alen];
int nmasks;
char config[Nconfig];
int nconfig = 0;
int maxscnt = 2;
char *ifname;
void
aoead(int fd) // advertise the virtual blade
{
uchar buf[2000];
Conf *p;
int i;
p = (Conf *)buf;
memset(p, 0, sizeof *p);
memset(p->h.dst, 0xff, 6);
memmove(p->h.src, mac, 6);
p->h.type = htons(0x88a2);
p->h.flags = Resp;
p->h.maj = htons(shelf);
p->h.min = slot;
p->h.cmd = Config;
p->bufcnt = htons(Bufcount);
p->scnt = maxscnt = (getmtu(sfd, ifname) - sizeof (Ata)) / 512;
p->firmware = htons(FWV);
p->vercmd = 0x10 | Qread;
memcpy(p->data, config, nconfig);
p->len = htons(nconfig);
if (nmasks == 0)
if (putpkt(fd, buf, sizeof *p - sizeof p->data + nconfig) == -1) {
perror("putpkt aoe id");
return;
}
for (i=0; i<nmasks; i++) {
memcpy(p->h.dst, &masks[i*Alen], Alen);
if (putpkt(fd, buf, sizeof *p - sizeof p->data + nconfig) == -1)
perror("putpkt aoe id");
}
}
int
isbcast(uchar *ea) // replace with assembler routine
{
uchar *b = (uchar *)"\377\377\377\377\377\377";
return memcmp(ea, b, 6) == 0;
}
long long
getlba(uchar *p)
{
vlong v;
int i;
v = 0;
for (i = 0; i < 6; i++)
v |= (vlong)(*p++) << i * 8;
return v;
}
int
aoeata(Ata *p) // do ATA reqeust
{
Ataregs r;
int len = 60;
int n;
r.lba = getlba(p->lba);
r.sectors = p->sectors;
r.feature = p->err;
r.cmd = p->cmd;
if (atacmd(&r, (uchar *)(p+1), maxscnt*512) < 0) {
p->h.flags |= Error;
p->h.error = BadArg;
return len;
}
if (!(p->aflag & Write))
if ((n = p->sectors)) {
n -= r.sectors;
len = sizeof (Ata) + (n*512);
}
p->sectors = r.sectors;
p->err = r.err;
p->cmd = r.status;
return len;
}
#define QCMD(x) ((x)->vercmd & 0xf)
// yes, this makes unnecessary copies.
int
confcmd(Conf *p) // process conf request
{
int len;
len = ntohs(p->len);
if (QCMD(p) != Qread)
if (len > Nconfig)
return 0; // if you can't play nice ...
switch (QCMD(p)) {
case Qtest:
if (len != nconfig)
return 0;
// fall thru
case Qprefix:
if (len > nconfig)
return 0;
if (memcmp(config, p->data, len))
return 0;
// fall thru
case Qread:
break;
case Qset:
if (nconfig)
if (nconfig != len || memcmp(config, p->data, len)) {
p->h.flags |= Error;
p->h.error = ConfigErr;
break;
}
// fall thru
case Qfset:
nconfig = len;
memcpy(config, p->data, nconfig);
break;
default:
p->h.flags |= Error;
p->h.error = BadArg;
}
memmove(p->data, config, nconfig);
p->len = htons(nconfig);
p->bufcnt = htons(Bufcount);
p->scnt = maxscnt = (getmtu(sfd, ifname) - sizeof (Ata)) / 512;
p->firmware = htons(FWV);
p->vercmd = 0x10 | QCMD(p); // aoe v.1
return nconfig + sizeof *p - sizeof p->data;
}
void
doaoe(Aoehdr *p)
{
int len;
switch (p->cmd) {
case ATAcmd:
len = aoeata((Ata*)p);
break;
case Config:
len = confcmd((Conf *)p);
if (len == 0)
return;
break;
default:
p->error = BadCmd;
len = 1024;
break;
}
memmove(p->dst, p->src, 6);
memmove(p->src, mac, 6);
p->maj = htons(shelf);
p->min = slot;
p->flags |= Resp;
if (putpkt(sfd, (uchar *) p, len) == -1) {
perror("write to network");
exit(1);
}
}
void
aoe(void)
{
Aoehdr *p;
uchar *buf;
int n, sh;
enum { bufsz = 1<<16, };
buf = malloc(bufsz);
aoead(sfd);
for (;;) {
n = getpkt(sfd, buf, bufsz);
if (n < 0) {
perror("read network");
exit(1);
}
if (n < 60)
continue;
p = (Aoehdr *) buf;
if (ntohs(p->type) != 0x88a2)
continue;
if (p->flags & Resp)
continue;
sh = ntohs(p->maj);
if (sh != shelf && sh != (ushort)~0)
continue;
if (p->min != slot && p->min != (uchar)~0)
continue;
if (nmasks && !maskok(p->src))
continue;
doaoe(p);
}
free(buf);
}
void
usage(void)
{
fprintf(stderr, "usage: %s [ -m mac[,mac...] ] shelf slot netif filename\n",
progname);
exit(1);
}
/* parseether from plan 9 */
int
parseether(uchar *to, char *from)
{
char nip[4];
char *p;
int i;
p = from;
for(i = 0; i < 6; i++){
if(*p == 0)
return -1;
nip[0] = *p++;
if(*p == 0)
return -1;
nip[1] = *p++;
nip[2] = 0;
to[i] = strtoul(nip, 0, 16);
if(*p == ':')
p++;
}
return 0;
}
void
setmask(char *ml)
{
char *p;
int n;
for (; ml; ml=p) {
p = strchr(ml, ',');
if (p)
*p++ = '\0';
n = parseether(&masks[nmasks*Alen], ml);
if (n < 0)
fprintf(stderr, "ignoring mask %s, parseether failure\n", ml);
else
nmasks++;
}
}
int
maskok(uchar *ea)
{
int i, ok = 0;
for (i=0; !ok && i<nmasks; i++)
ok = memcmp(ea, &masks[i*Alen], Alen) == 0;
return ok;
}
int
main(int argc, char **argv)
{
int ch, omode = O_RDONLY;
struct stat s;
setbuf(stdin, NULL);
atainit();
progname = *argv;
while ((ch = getopt(argc, argv, "m:")) != -1) {
switch (ch) {
case 'm':
setmask(optarg);
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 4)
usage();
if (stat(argv[3], &s) < 0) {
perror("stat");
exit(1);
}
if (s.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH))
omode = O_RDWR;
bfd = open(argv[3], omode);
if (bfd == -1) {
perror("open");
exit(1);
}
shelf = atoi(argv[0]);
slot = atoi(argv[1]);
size = getsize(bfd);
size /= 512;
ifname = argv[2];
sfd = dial(ifname);
getea(sfd, ifname, mac);
printf("pid %ld: e%d.%d, %lld sectors %s\n",
(long) getpid(), shelf, slot, size,
omode == O_RDWR ? "O_RDWR" : "O_RDONLY");
fflush(stdout);
aoe();
return 0;
}
vblade-14/ata.c 0000644 0000000 0000000 00000005751 10531575620 0013060 0 ustar 00git git 0000000 0000000 // ata.c: ATA simulator for vblade
#include "config.h"
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include "dat.h"
#include "fns.h"
enum {
// err bits
UNC = 1<<6,
MC = 1<<5,
IDNF = 1<<4,
MCR = 1<<3,
ABRT = 1<<2,
NM = 1<<1,
// status bits
BSY = 1<<7,
DRDY = 1<<6,
DF = 1<<5,
DRQ = 1<<3,
ERR = 1<<0,
};
static ushort ident[256] = {
[47] 0x8000,
[49] 0x0200,
[50] 0x4000,
[83] 0x5400,
[84] 0x4000,
[86] 0x1400,
[87] 0x4000,
[93] 0x400b,
};
static void
setfld(ushort *a, int idx, int len, char *str) // set field in ident
{
uchar *p;
p = (uchar *)(a+idx);
while (len > 0) {
if (*str == 0)
p[1] = ' ';
else
p[1] = *str++;
if (*str == 0)
p[0] = ' ';
else
p[0] = *str++;
p += 2;
len -= 2;
}
}
static void
setlba28(ushort *ident, vlong lba)
{
uchar *cp;
cp = (uchar *) &ident[60];
*cp++ = lba;
*cp++ = lba >>= 8;
*cp++ = lba >>= 8;
*cp++ = (lba >>= 8) & 0xf;
}
static void
setlba48(ushort *ident, vlong lba)
{
uchar *cp;
cp = (uchar *) &ident[100];
*cp++ = lba;
*cp++ = lba >>= 8;
*cp++ = lba >>= 8;
*cp++ = lba >>= 8;
*cp++ = lba >>= 8;
*cp++ = lba >>= 8;
}
void
atainit(void)
{
char buf[64];
setfld(ident, 27, 40, "Coraid EtherDrive vblade");
sprintf(buf, "V%d\n", VBLADE_VERSION);
setfld(ident, 23, 8, buf);
setfld(ident, 10, 20, "SSN HERE");
}
/* The ATA spec is weird in that you specify the device size as number
* of sectors and then address the sectors with an offset. That means
* with LBA 28 you shouldn't see an LBA of all ones. Still, we don't
* check for that.
*/
int
atacmd(Ataregs *p, uchar *dp, int ndp) // do the ata cmd
{
vlong lba;
ushort *ip;
int n;
enum { MAXLBA28SIZE = 0x0fffffff };
extern int maxscnt;
p->status = 0;
switch (p->cmd) {
default:
p->status = DRDY | ERR;
p->err = ABRT;
return 0;
case 0xe7: // flush cache
return 0;
case 0xec: // identify device
if (p->sectors != 1 || ndp < 512)
return -1;
memmove(dp, ident, 512);
ip = (ushort *)dp;
if (size & ~MAXLBA28SIZE)
setlba28(ip, MAXLBA28SIZE);
else
setlba28(ip, size);
setlba48(ip, size);
p->err = 0;
p->status = DRDY;
p->sectors = 0;
return 0;
case 0xe5: // check power mode
p->err = 0;
p->sectors = 0xff; // the device is active or idle
p->status = DRDY;
return 0;
case 0x20: // read sectors
case 0x30: // write sectors
lba = p->lba & MAXLBA28SIZE;
break;
case 0x24: // read sectors ext
case 0x34: // write sectors ext
lba = p->lba & 0x0000ffffffffffffLL; // full 48
break;
}
// we ought not be here unless we are a read/write
if (p->sectors > maxscnt || p->sectors*512 > ndp)
return -1;
if (lba + p->sectors > size) {
p->err = IDNF;
p->status = DRDY | ERR;
p->lba = lba;
return 0;
}
if (p->cmd == 0x20 || p->cmd == 0x24)
n = getsec(bfd, dp, lba, p->sectors);
else
n = putsec(bfd, dp, lba, p->sectors);
n /= 512;
if (n != p->sectors) {
p->err = ABRT;
p->status = ERR;
} else
p->err = 0;
p->status |= DRDY;
p->lba += n;
p->sectors -= n;
return 0;
}
vblade-14/config.h 0000644 0000000 0000000 00000000076 10531575620 0013560 0 ustar 00git git 0000000 0000000 #define _FILE_OFFSET_BITS 64
typedef unsigned long long u64;
vblade-14/config/ 0000755 0000000 0000000 00000000000 10531575620 0013404 5 ustar 00git git 0000000 0000000 vblade-14/config/config.h.in 0000644 0000000 0000000 00000000104 10531575620 0015422 0 ustar 00git git 0000000 0000000 #define _FILE_OFFSET_BITS 64
//u64 typedef unsigned long long u64;
vblade-14/config/u64.c 0000644 0000000 0000000 00000000126 10531575620 0014165 0 ustar 00git git 0000000 0000000 #include <stdio.h>
int main(void)
{
u64 n;
printf("%d\n", (int) n+2);
return 0;
}
vblade-14/contrib/ 0000755 0000000 0000000 00000000000 10531575620 0013577 5 ustar 00git git 0000000 0000000 vblade-14/contrib/README 0000644 0000000 0000000 00000000777 10531575620 0014472 0 ustar 00git git 0000000 0000000
The patches in the contrib directory enable features
that either don't work completely, aren't well tested, or
are of limited general use. They can be applied by
using patch in the vblade source directory as follows:
forfeit:~/vblade-12 # patch -p1 <contrib/jumbo.diff
patching file aoe.c
patching file fns.h
patching file freebsd.c
patching file linux.c
forfeit:~/vblade-12 #
contrib/o_direct.diff:
Enable O_DIRECT on linux to minimize cache effects of the I/O to
and from the file backing the vblade.
vblade-14/contrib/o_direct.diff 0000644 0000000 0000000 00000005754 10531575620 0016234 0 ustar 00git git 0000000 0000000 diff -uprN vblade-14rc1/aoe.c vblade-14rc2/aoe.c
--- vblade-14rc1/aoe.c 2006-11-20 12:48:05.000000000 -0500
+++ vblade-14rc2/aoe.c 2006-11-20 13:14:04.000000000 -0500
@@ -185,15 +185,42 @@ doaoe(Aoehdr *p)
}
}
+// allocate the buffer so that the ata data area
+// is page aligned for o_direct on linux
+
+void *
+bufalloc(uchar **buf, long len)
+{
+ long psize;
+ unsigned long n;
+
+ psize = sysconf(_SC_PAGESIZE);
+ if (psize == -1) {
+ perror("sysconf");
+ exit(EXIT_FAILURE);
+ }
+ n = len/psize + 3;
+ *buf = malloc(psize * n);
+ if (!*buf) {
+ perror("malloc");
+ exit(EXIT_FAILURE);
+ }
+ n = (unsigned long) *buf;
+ n += psize * 2;
+ n &= ~(psize - 1);
+ return (void *) (n - sizeof (Ata));
+}
+
void
aoe(void)
{
Aoehdr *p;
+ uchar *freeme;
uchar *buf;
int n, sh;
enum { bufsz = 1<<16, };
- buf = malloc(bufsz);
+ buf = bufalloc(&freeme, bufsz);
aoead(sfd);
for (;;) {
@@ -218,7 +245,7 @@ aoe(void)
continue;
doaoe(p);
}
- free(buf);
+ free(freeme);
}
void
@@ -310,7 +337,7 @@ main(int argc, char **argv)
}
if (s.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH))
omode = O_RDWR;
- bfd = open(argv[3], omode);
+ bfd = opendisk(argv[3], omode);
if (bfd == -1) {
perror("open");
exit(1);
diff -uprN vblade-14rc1/fns.h vblade-14rc2/fns.h
--- vblade-14rc1/fns.h 2006-11-13 16:12:31.000000000 -0500
+++ vblade-14rc2/fns.h 2006-11-20 13:13:44.000000000 -0500
@@ -21,6 +21,7 @@ int atacmd(Ataregs *, uchar *, int);
int dial(char *);
int getea(int, char *, uchar *);
+int opendisk(const char *, int);
int putsec(int, uchar *, vlong, int);
int getsec(int, uchar *, vlong, int);
int putpkt(int, uchar *, int);
diff -uprN vblade-14rc1/freebsd.c vblade-14rc2/freebsd.c
--- vblade-14rc1/freebsd.c 2006-11-13 13:57:34.000000000 -0500
+++ vblade-14rc2/freebsd.c 2006-11-20 13:13:44.000000000 -0500
@@ -241,6 +241,11 @@ getea(int s, char *eth, uchar *ea)
return(0);
}
+int
+opendisk(const char *disk, int omode)
+{
+ return open(disk, omode);
+}
int
getsec(int fd, uchar *place, vlong lba, int nsec)
diff -uprN vblade-14rc1/linux.c vblade-14rc2/linux.c
--- vblade-14rc1/linux.c 2006-11-13 13:57:34.000000000 -0500
+++ vblade-14rc2/linux.c 2006-11-20 13:13:44.000000000 -0500
@@ -1,5 +1,6 @@
// linux.c: low level access routines for Linux
#include "config.h"
+#define _GNU_SOURCE
#include <sys/socket.h>
#include <stdio.h>
#include <string.h>
@@ -22,6 +23,7 @@
#include <netinet/in.h>
#include <linux/fs.h>
#include <sys/stat.h>
+#include <fcntl.h>
#include "dat.h"
#include "fns.h"
@@ -102,17 +104,21 @@ getmtu(int s, char *name)
}
int
+opendisk(const char *disk, int omode)
+{
+ return open(disk, omode|O_DIRECT);
+}
+
+int
getsec(int fd, uchar *place, vlong lba, int nsec)
{
- lseek(fd, lba * 512, 0);
- return read(fd, place, nsec * 512);
+ return pread(fd, place, nsec * 512, lba * 512);
}
int
putsec(int fd, uchar *place, vlong lba, int nsec)
{
- lseek(fd, lba * 512, 0);
- return write(fd, place, nsec * 512);
+ return pwrite(fd, place, nsec * 512, lba * 512);
}
int
vblade-14/dat.h 0000644 0000000 0000000 00000003137 10531575620 0013064 0 ustar 00git git 0000000 0000000 /* dat.h: include file for vblade AoE target */
#define nil ((void *)0)
/*
* tunable variables
*/
enum {
VBLADE_VERSION = 12,
// Firmware version
FWV = 0x4000 + VBLADE_VERSION,
};
#undef major
#undef minor
#undef makedev
#define major(x) ((x) >> 24 & 0xFF)
#define minor(x) ((x) & 0xffffff)
#define makedev(x, y) ((x) << 24 | (y))
typedef unsigned char uchar;
//typedef unsigned short ushort;
#ifdef __FreeBSD__
typedef unsigned long ulong;
#else
//typedef unsigned long ulong;
#endif
typedef long long vlong;
typedef struct Aoehdr Aoehdr;
typedef struct Ata Ata;
typedef struct Conf Conf;
typedef struct Ataregs Ataregs;
struct Ataregs
{
vlong lba;
uchar cmd;
uchar status;
uchar err;
uchar feature;
uchar sectors;
};
struct Aoehdr
{
uchar dst[6];
uchar src[6];
ushort type;
uchar flags;
uchar error;
ushort maj;
uchar min;
uchar cmd;
uchar tag[4];
};
struct Ata
{
Aoehdr h;
uchar aflag;
uchar err;
uchar sectors;
uchar cmd;
uchar lba[6];
uchar resvd[2];
};
struct Conf
{
Aoehdr h;
ushort bufcnt;
ushort firmware;
uchar scnt;
uchar vercmd;
ushort len;
uchar data[1024];
};
enum {
AoEver = 1,
ATAcmd = 0, // command codes
Config,
Resp = (1<<3), // flags
Error = (1<<2),
BadCmd = 1,
BadArg,
DevUnavailable,
ConfigErr,
BadVersion,
Write = (1<<0),
Async = (1<<1),
Device = (1<<4),
Extend = (1<<6),
Qread = 0,
Qtest,
Qprefix,
Qset,
Qfset,
Nretries = 3,
Nconfig = 1024,
Bufcount = 16,
};
int shelf, slot;
ulong aoetag;
uchar mac[6];
int bfd; // block file descriptor
int sfd; // socket file descriptor
vlong size; // size of vblade
char *progname;
vblade-14/fns.h 0000644 0000000 0000000 00000001077 10531575620 0013103 0 ustar 00git git 0000000 0000000 // fns.h: function prototypes
// aoe.c
void aoe(void);
void aoeinit(void);
void aoequery(void);
void aoeconfig(void);
void aoead(int);
void aoeflush(int, int);
void aoetick(void);
void aoerequest(int, int, vlong, int, uchar *, int);
int maskok(uchar *);
// ata.c
void atainit(void);
int atacmd(Ataregs *, uchar *, int);
// os specific
int dial(char *);
int getea(int, char *, uchar *);
int putsec(int, uchar *, vlong, int);
int getsec(int, uchar *, vlong, int);
int putpkt(int, uchar *, int);
int getpkt(int, uchar *, int);
vlong getsize(int);
int getmtu(int, char *);
vblade-14/freebsd.c 0000644 0000000 0000000 00000014663 10531575620 0013727 0 ustar 00git git 0000000 0000000 /*
* Copyright (c) 2005, Stacey Son <sson (at) verio (dot) net>
* All rights reserved.
*/
// freebsd.c: low level access routines for FreeBSD
#include "config.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <net/ethernet.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/route.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <net/if.h>
#include <sys/stat.h>
#include <sys/disklabel.h>
#include <sys/select.h>
#include <sys/sysctl.h>
#include <fcntl.h>
#include <errno.h>
#include "dat.h"
#include "fns.h"
#define BPF_DEV "/dev/bpf0"
/* Packet buffer for getpkt() */
static uchar *pktbuf = NULL;
static int pktbufsz = 0;
int
dial(char *eth)
{
char m;
int fd = -1;
struct bpf_version bv;
u_int v;
unsigned bufsize, linktype;
char device[sizeof BPF_DEV];
struct ifreq ifr;
/* packet filter for bpf */
struct bpf_insn bpf_insns[] = {
/* Load the type into register */
BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
/* Does it match AoE Type (0x88a2)? No, goto INVALID */
BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x88a2, 0, 10),
/* Load the flags into register */
BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 14),
/* Check to see if the Resp flag is set */
BPF_STMT(BPF_ALU+BPF_AND+BPF_K, Resp),
/* Yes, goto INVALID */
BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 7),
/* Load the command into register */
BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 19),
/* Is this a ATAcmd? No, goto VALID */
BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ATAcmd, 0, 4),
/* Load the shelf number into register */
BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 16),
/* Does it match shelf number? No, goto INVALID */
BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) shelf, 0, 3),
/* Load the slot number into register */
BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 18),
/* Does it match shelf number? No, goto INVALID */
BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) slot, 0, 1),
/* VALID: return -1 (allow the packet to be read) */
BPF_STMT(BPF_RET+BPF_K, (u_int)-1),
/* INVALID: return 0 (ignore the packet) */
BPF_STMT(BPF_RET+BPF_K, 0),
};
struct bpf_program bpf_program = {
sizeof(bpf_insns)/sizeof(struct bpf_insn),
bpf_insns
};
strncpy(device, BPF_DEV, sizeof BPF_DEV);
/* find a bpf device we can use, check /dev/bpf[0-9] */
for (m = '0'; m <= '9'; m++) {
device[sizeof(BPF_DEV)-2] = m;
if ((fd = open(device, O_RDWR)) > 0)
break;
}
if (fd < 0) {
perror("open");
return -1;
}
if (ioctl(fd, BIOCVERSION, &bv) < 0) {
perror("BIOCVERSION");
goto bad;
}
if (bv.bv_major != BPF_MAJOR_VERSION ||
bv.bv_minor < BPF_MINOR_VERSION) {
fprintf(stderr,
"kernel bpf filter out of date\n");
goto bad;
}
/*
* Try finding a good size for the buffer; 65536 may be too
* big, so keep cutting it in half until we find a size
* that works, or run out of sizes to try.
*
*/
for (v = 65536; v != 0; v >>= 1) {
(void) ioctl(fd, BIOCSBLEN, (caddr_t)&v);
(void)strncpy(ifr.ifr_name, eth,
sizeof(ifr.ifr_name));
if (ioctl(fd, BIOCSETIF, (caddr_t)&ifr) >= 0)
break; /* that size worked; we're done */
if (errno != ENOBUFS) {
fprintf(stderr, "BIOCSETIF: %s: %s\n",
eth, strerror(errno));
goto bad;
}
}
if (v == 0) {
fprintf(stderr,
"BIOCSBLEN: %s: No buffer size worked\n", eth);
goto bad;
}
/* Allocate memory for the packet buffer */
pktbufsz = v;
if ((pktbuf = malloc(pktbufsz)) == NULL) {
perror("malloc");
goto bad;
}
/* Don't wait for buffer to be full or timeout */
v = 1;
if (ioctl(fd, BIOCIMMEDIATE, &v) < 0) {
perror("BIOCIMMEDIATE");
goto bad;
}
/* Only read incoming packets */
v = 0;
if (ioctl(fd, BIOCSSEESENT, &v) < 0) {
perror("BIOCSSEESENT");
goto bad;
}
/* Don't complete ethernet hdr */
v = 1;
if (ioctl(fd, BIOCSHDRCMPLT, &v) < 0) {
perror("BIOCSHDRCMPLT");
goto bad;
}
/* Get the data link layer type. */
if (ioctl(fd, BIOCGDLT, (caddr_t)&v) < 0) {
perror("BIOCGDLT");
goto bad;
}
linktype = v;
/* Get the filter buf size */
if (ioctl(fd, BIOCGBLEN, (caddr_t)&v) < 0) {
perror("BIOCGBLEN");
goto bad;
}
bufsize = v;
if (ioctl(fd, BIOCSETF, (caddr_t)&bpf_program) < 0) {
perror("BIOSETF");
goto bad;
}
return(fd);
bad:
close(fd);
return(-1);
}
int
getea(int s, char *eth, uchar *ea)
{
int mib[6];
size_t len;
char *buf, *next, *end;
struct if_msghdr *ifm;
struct sockaddr_dl *sdl;
mib[0] = CTL_NET; mib[1] = AF_ROUTE;
mib[2] = 0; mib[3] = AF_LINK;
mib[4] = NET_RT_IFLIST; mib[5] = 0;
if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
return (-1);
}
if (!(buf = (char *) malloc(len))) {
return (-1);
}
if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
free(buf);
return (-1);
}
end = buf + len;
for (next = buf; next < end; next += ifm->ifm_msglen) {
ifm = (struct if_msghdr *)next;
if (ifm->ifm_type == RTM_IFINFO) {
sdl = (struct sockaddr_dl *)(ifm + 1);
if (strncmp(&sdl->sdl_data[0], eth,
sdl->sdl_nlen) == 0) {
memcpy(ea, LLADDR(sdl), ETHER_ADDR_LEN);
break;
}
}
}
free(buf);
return(0);
}
int
getsec(int fd, uchar *place, vlong lba, int nsec)
{
return pread(fd, place, nsec * 512, lba * 512);
}
int
putsec(int fd, uchar *place, vlong lba, int nsec)
{
return pwrite(fd, place, nsec * 512, lba * 512);
}
static int pktn = 0;
static uchar *pktbp = NULL;
int
getpkt(int fd, uchar *buf, int sz)
{
register struct bpf_hdr *bh;
register int pktlen, retlen;
if (pktn <= 0) {
if ((pktn = read(fd, pktbuf, pktbufsz)) < 0) {
perror("read");
exit(1);
}
pktbp = pktbuf;
}
bh = (struct bpf_hdr *) pktbp;
retlen = (int) bh->bh_caplen;
/* This memcpy() is currently needed */
memcpy(buf, (void *)(pktbp + bh->bh_hdrlen),
retlen > sz ? sz : retlen);
pktlen = bh->bh_hdrlen + bh->bh_caplen;
pktbp = pktbp + BPF_WORDALIGN(pktlen);
pktn -= (int) BPF_WORDALIGN(pktlen);
return retlen;
}
int
putpkt(int fd, uchar *buf, int sz)
{
return write(fd, buf, sz);
}
int
getmtu(int fd, char *name)
{
return 1500;
}
vlong
getsize(int fd)
{
vlong size;
struct stat s;
int n;
struct disklabel lab;
// Try getting disklabel from block dev
if ((n = ioctl(fd, DIOCGDINFO, lab)) != -1) {
size = lab.d_secsize * lab.d_secperunit;
} else {
// must not be a block special dev
if (fstat(fd, &s) == -1) {
perror("getsize");
exit(1);
}
size = s.st_size;
}
printf("ioctl returned %d\n", n);
printf("%lld bytes\n", size);
return size;
}
vblade-14/linux.c 0000644 0000000 0000000 00000004766 10531575620 0013457 0 ustar 00git git 0000000 0000000 // linux.c: low level access routines for Linux
#include "config.h"
#include <sys/socket.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include <features.h> /* for the glibc version number */
#if __GLIBC__ >= 2 && __GLIBC_MINOR >= 1
#include <netpacket/packet.h>
#include <net/ethernet.h> /* the L2 protocols */
#else
#include <asm/types.h>
#include <linux/if_packet.h>
#include <linux/if_ether.h> /* The L2 protocols */
#endif
#include <sys/ioctl.h>
#include <sys/types.h>
#include <net/if.h>
#include <netinet/in.h>
#include <linux/fs.h>
#include <sys/stat.h>
#include "dat.h"
#include "fns.h"
int getindx(int, char *);
int getea(int, char *, uchar *);
int
dial(char *eth) // get us a raw connection to an interface
{
int i;
int n, s;
struct sockaddr_ll sa;
enum { aoe_type = 0x88a2 };
memset(&sa, 0, sizeof sa);
s = socket(PF_PACKET, SOCK_RAW, htons(aoe_type));
if (s == -1) {
perror("got bad socket");
return -1;
}
i = getindx(s, eth);
sa.sll_family = AF_PACKET;
sa.sll_protocol = htons(0x88a2);
sa.sll_ifindex = i;
n = bind(s, (struct sockaddr *)&sa, sizeof sa);
if (n == -1) {
perror("bind funky");
return -1;
}
return s;
}
int
getindx(int s, char *name) // return the index of device 'name'
{
struct ifreq xx;
int n;
strcpy(xx.ifr_name, name);
n = ioctl(s, SIOCGIFINDEX, &xx);
if (n == -1)
return -1;
return xx.ifr_ifindex;
}
int
getea(int s, char *name, uchar *ea)
{
struct ifreq xx;
int n;
strcpy(xx.ifr_name, name);
n = ioctl(s, SIOCGIFHWADDR, &xx);
if (n == -1) {
perror("Can't get hw addr");
return 0;
}
memmove(ea, xx.ifr_hwaddr.sa_data, 6);
return 1;
}
int
getmtu(int s, char *name)
{
struct ifreq xx;
int n;
strcpy(xx.ifr_name, name);
n = ioctl(s, SIOCGIFMTU, &xx);
if (n == -1) {
perror("Can't get mtu");
return 1500;
}
return xx.ifr_mtu;
}
int
getsec(int fd, uchar *place, vlong lba, int nsec)
{
lseek(fd, lba * 512, 0);
return read(fd, place, nsec * 512);
}
int
putsec(int fd, uchar *place, vlong lba, int nsec)
{
lseek(fd, lba * 512, 0);
return write(fd, place, nsec * 512);
}
int
getpkt(int fd, uchar *buf, int sz)
{
return read(fd, buf, sz);
}
int
putpkt(int fd, uchar *buf, int sz)
{
return write(fd, buf, sz);
}
vlong
getsize(int fd)
{
vlong size;
struct stat s;
int n;
n = ioctl(fd, BLKGETSIZE64, &size);
if (n == -1) { // must not be a block special
n = fstat(fd, &s);
if (n == -1) {
perror("getsize");
exit(1);
}
size = s.st_size;
}
return size;
}
vblade-14/linux.h 0000644 0000000 0000000 00000000404 10531575620 0013445 0 ustar 00git git 0000000 0000000 // linux.h: header for linux.c
typedef unsigned char uchar;
typedef long long vlong;
int dial(char *);
int getindx(int, char *);
int getea(int, char *, uchar *);
int getsec(int, uchar *, vlong, int);
int putsec(int, uchar *, vlong, int);
vlong getsize(int);
vblade-14/makefile 0000644 0000000 0000000 00000001476 10531575620 0013647 0 ustar 00git git 0000000 0000000 # makefile for vblade
# see README for others
PLATFORM=linux
prefix = /usr
sbindir = ${prefix}/sbin
sharedir = ${prefix}/share
mandir = ${sharedir}/man
O=aoe.o ${PLATFORM}.o ata.o
CFLAGS += -Wall -g -O2
CC = gcc
vblade: $O
${CC} -o vblade $O
aoe.o : aoe.c config.h dat.h fns.h makefile
${CC} ${CFLAGS} -c $<
${PLATFORM}.o : ${PLATFORM}.c config.h dat.h fns.h makefile
${CC} ${CFLAGS} -c $<
ata.o : ata.c config.h dat.h fns.h makefile
${CC} ${CFLAGS} -c $<
config.h : config/config.h.in makefile
@if ${CC} ${CFLAGS} config/u64.c > /dev/null 2>&1; then \
sh -xc "cp config/config.h.in config.h"; \
else \
sh -xc "sed 's!^//u64 !!' config/config.h.in > config.h"; \
fi
clean :
rm -f $O vblade
install : vblade vbladed
install vblade ${sbindir}/
install vbladed ${sbindir}/
install vblade.8 ${mandir}/man8/
vblade-14/vblade.8 0000644 0000000 0000000 00000003037 10531575620 0013470 0 ustar 00git git 0000000 0000000 .TH vblade 8
.SH NAME
vblade, vbladed \- export data via ATA over Ethernet
.SH SYNOPSIS
.nf
.B vblade [ -m mac[,mac...] ] shelf slot netif filename
.fi
.SH DESCRIPTION
The
.I vblade
command starts a process that uses raw sockets to perform ATA over
Ethernet, acting like a virtual EtherDrive (R) blade.
.PP
The
.I vbladed
script can be used to daemonize the vblade process,
detaching it from your terminal and sending its output to the system
logs.
.SS Arguments
.TP
\fBshelf\fP
This should be the shelf address (major AoE address) of the AoE device
to create.
.TP
\fBslot\fP
This should be the slot address (minor AoE address) of the AoE device
to create.
.TP
\fBnetif\fP
The name of the ethernet network interface to use for AoE
communications.
.TP
\fBfilename\fP
The name of the regular file or block device to export.
.SS Options
.TP
\fB-m\fP
The -m flag takes an argument, a comma separated list of MAC addresses
permitted access to the vblade. A MAC address can be specified in upper
or lower case, with or without colons.
.SH EXAMPLE
In this example, the root user on a host named
.I nai
exports a file named "3TB" to the LAN on eth0 using AoE shelf address 11
and slot address 1. The process runs in the foreground. Using
.I vbladed
would have resulted in the process running as a daemon in the
background.
.IP
.EX
.nf
nai:~# vblade 11 1 eth0 /data/3TB
.fi
.EE
.SH BUGS
Users of Jumbo frames should read the README file distributed with
vblade to learn about a workaround for kernel buffering limitations.
.SH AUTHOR
Brantley Coile (brantley@coraid.com)
vblade-14/vbladed 0000755 0000000 0000000 00000000241 10531575620 0013463 0 ustar 00git git 0000000 0000000 #! /bin/sh
# run a vblade daemon using a logger process
# output is directed to syslogd
#
sh -c "`dirname $0`/vblade $* < /dev/null 2>&1 | logger -t vbladed" &