2008-07-09 14:56:51 -06:00
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/*
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* Copyright (C) 2003-2008 Takahiro Hirofuchi
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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2011-05-11 23:33:43 -06:00
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#include <asm/byteorder.h>
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2008-07-09 14:56:51 -06:00
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#include <linux/file.h>
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2011-05-11 23:33:43 -06:00
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#include <linux/fs.h>
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#include <linux/kernel.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/slab.h>
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2012-08-16 20:22:36 -06:00
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#include <linux/stat.h>
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2011-08-30 15:50:46 -06:00
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#include <linux/module.h>
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2012-08-16 20:22:36 -06:00
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#include <linux/moduleparam.h>
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2011-05-11 23:33:43 -06:00
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#include <net/sock.h>
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2011-05-06 04:47:56 -06:00
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2008-07-09 14:56:51 -06:00
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#include "usbip_common.h"
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2011-05-06 04:47:56 -06:00
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#define DRIVER_AUTHOR "Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>"
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2011-05-11 23:33:44 -06:00
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#define DRIVER_DESC "USB/IP Core"
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2008-07-09 14:56:51 -06:00
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2011-05-11 23:33:44 -06:00
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#ifdef CONFIG_USBIP_DEBUG
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2008-07-09 14:56:51 -06:00
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unsigned long usbip_debug_flag = 0xffffffff;
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#else
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unsigned long usbip_debug_flag;
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#endif
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EXPORT_SYMBOL_GPL(usbip_debug_flag);
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2012-08-16 20:22:36 -06:00
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module_param(usbip_debug_flag, ulong, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(usbip_debug_flag, "debug flags (defined in usbip_common.h)");
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2008-07-09 14:56:51 -06:00
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/* FIXME */
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struct device_attribute dev_attr_usbip_debug;
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EXPORT_SYMBOL_GPL(dev_attr_usbip_debug);
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2013-08-26 13:02:54 -06:00
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static ssize_t usbip_debug_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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2008-07-09 14:56:51 -06:00
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{
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return sprintf(buf, "%lx\n", usbip_debug_flag);
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}
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2013-08-26 13:02:54 -06:00
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static ssize_t usbip_debug_store(struct device *dev,
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struct device_attribute *attr, const char *buf,
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size_t count)
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2008-07-09 14:56:51 -06:00
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{
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2010-01-22 13:21:57 -07:00
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sscanf(buf, "%lx", &usbip_debug_flag);
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2008-07-09 14:56:51 -06:00
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return count;
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}
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2013-08-26 13:02:54 -06:00
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DEVICE_ATTR_RW(usbip_debug);
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2008-07-09 14:56:51 -06:00
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static void usbip_dump_buffer(char *buff, int bufflen)
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{
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2011-05-19 17:47:32 -06:00
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print_hex_dump(KERN_DEBUG, "usbip-core", DUMP_PREFIX_OFFSET, 16, 4,
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2010-01-22 14:22:41 -07:00
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buff, bufflen, false);
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2008-07-09 14:56:51 -06:00
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}
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static void usbip_dump_pipe(unsigned int p)
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{
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unsigned char type = usb_pipetype(p);
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2011-05-19 22:36:56 -06:00
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unsigned char ep = usb_pipeendpoint(p);
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unsigned char dev = usb_pipedevice(p);
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unsigned char dir = usb_pipein(p);
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2008-07-09 14:56:51 -06:00
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2011-05-19 17:47:32 -06:00
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pr_debug("dev(%d) ep(%d) [%s] ", dev, ep, dir ? "IN" : "OUT");
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2008-07-09 14:56:51 -06:00
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switch (type) {
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case PIPE_ISOCHRONOUS:
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2011-05-19 17:47:32 -06:00
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pr_debug("ISO\n");
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2008-07-09 14:56:51 -06:00
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break;
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case PIPE_INTERRUPT:
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2011-05-19 17:47:32 -06:00
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pr_debug("INT\n");
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2008-07-09 14:56:51 -06:00
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break;
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case PIPE_CONTROL:
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2011-05-19 17:47:32 -06:00
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pr_debug("CTRL\n");
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2008-07-09 14:56:51 -06:00
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break;
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case PIPE_BULK:
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2011-05-19 17:47:32 -06:00
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pr_debug("BULK\n");
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2008-07-09 14:56:51 -06:00
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break;
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default:
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2011-05-19 17:47:32 -06:00
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pr_debug("ERR\n");
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2011-05-06 04:47:54 -06:00
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break;
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2008-07-09 14:56:51 -06:00
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}
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}
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static void usbip_dump_usb_device(struct usb_device *udev)
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{
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struct device *dev = &udev->dev;
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int i;
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2011-05-19 17:47:32 -06:00
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dev_dbg(dev, " devnum(%d) devpath(%s) ",
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2008-07-09 14:56:51 -06:00
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udev->devnum, udev->devpath);
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switch (udev->speed) {
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case USB_SPEED_HIGH:
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2011-05-19 17:47:32 -06:00
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pr_debug("SPD_HIGH ");
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2008-07-09 14:56:51 -06:00
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break;
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case USB_SPEED_FULL:
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2011-05-19 17:47:32 -06:00
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pr_debug("SPD_FULL ");
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2008-07-09 14:56:51 -06:00
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break;
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case USB_SPEED_LOW:
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2011-05-19 17:47:32 -06:00
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pr_debug("SPD_LOW ");
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2008-07-09 14:56:51 -06:00
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break;
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case USB_SPEED_UNKNOWN:
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2011-05-19 17:47:32 -06:00
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pr_debug("SPD_UNKNOWN ");
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2008-07-09 14:56:51 -06:00
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break;
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default:
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2011-05-19 17:47:32 -06:00
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pr_debug("SPD_ERROR ");
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2011-05-06 04:47:54 -06:00
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break;
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2008-07-09 14:56:51 -06:00
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}
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2011-05-19 17:47:32 -06:00
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pr_debug("tt %p, ttport %d\n", udev->tt, udev->ttport);
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2008-07-09 14:56:51 -06:00
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dev_dbg(dev, " ");
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for (i = 0; i < 16; i++)
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2011-05-19 17:47:32 -06:00
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pr_debug(" %2u", i);
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pr_debug("\n");
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2008-07-09 14:56:51 -06:00
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dev_dbg(dev, " toggle0(IN) :");
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for (i = 0; i < 16; i++)
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2011-05-19 17:47:32 -06:00
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pr_debug(" %2u", (udev->toggle[0] & (1 << i)) ? 1 : 0);
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pr_debug("\n");
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2008-07-09 14:56:51 -06:00
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dev_dbg(dev, " toggle1(OUT):");
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for (i = 0; i < 16; i++)
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2011-05-19 17:47:32 -06:00
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pr_debug(" %2u", (udev->toggle[1] & (1 << i)) ? 1 : 0);
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pr_debug("\n");
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2008-07-09 14:56:51 -06:00
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dev_dbg(dev, " epmaxp_in :");
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for (i = 0; i < 16; i++) {
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if (udev->ep_in[i])
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2011-05-19 17:47:32 -06:00
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pr_debug(" %2u",
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le16_to_cpu(udev->ep_in[i]->desc.wMaxPacketSize));
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2008-07-09 14:56:51 -06:00
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}
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2011-05-19 17:47:32 -06:00
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pr_debug("\n");
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2008-07-09 14:56:51 -06:00
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dev_dbg(dev, " epmaxp_out :");
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for (i = 0; i < 16; i++) {
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if (udev->ep_out[i])
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2011-05-19 17:47:32 -06:00
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pr_debug(" %2u",
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le16_to_cpu(udev->ep_out[i]->desc.wMaxPacketSize));
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2008-07-09 14:56:51 -06:00
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}
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2011-05-19 17:47:32 -06:00
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pr_debug("\n");
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2008-07-09 14:56:51 -06:00
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dev_dbg(dev, "parent %p, bus %p\n", udev->parent, udev->bus);
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|
2013-11-02 06:08:10 -06:00
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dev_dbg(dev,
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"descriptor %p, config %p, actconfig %p, rawdescriptors %p\n",
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&udev->descriptor, udev->config,
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2008-07-09 14:56:51 -06:00
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udev->actconfig, udev->rawdescriptors);
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dev_dbg(dev, "have_langid %d, string_langid %d\n",
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udev->have_langid, udev->string_langid);
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|
2012-09-04 23:44:32 -06:00
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dev_dbg(dev, "maxchild %d\n", udev->maxchild);
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2008-07-09 14:56:51 -06:00
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}
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static void usbip_dump_request_type(__u8 rt)
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{
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switch (rt & USB_RECIP_MASK) {
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case USB_RECIP_DEVICE:
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2011-05-19 17:47:32 -06:00
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pr_debug("DEVICE");
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2008-07-09 14:56:51 -06:00
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break;
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case USB_RECIP_INTERFACE:
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2011-05-19 17:47:32 -06:00
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pr_debug("INTERF");
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2008-07-09 14:56:51 -06:00
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break;
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case USB_RECIP_ENDPOINT:
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2011-05-19 17:47:32 -06:00
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pr_debug("ENDPOI");
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2008-07-09 14:56:51 -06:00
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break;
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case USB_RECIP_OTHER:
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2011-05-19 17:47:32 -06:00
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pr_debug("OTHER ");
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2008-07-09 14:56:51 -06:00
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break;
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default:
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2011-05-19 17:47:32 -06:00
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pr_debug("------");
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2011-05-06 04:47:54 -06:00
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break;
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2008-07-09 14:56:51 -06:00
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}
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}
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static void usbip_dump_usb_ctrlrequest(struct usb_ctrlrequest *cmd)
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{
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if (!cmd) {
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2011-05-19 17:47:32 -06:00
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pr_debug(" : null pointer\n");
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2008-07-09 14:56:51 -06:00
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return;
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}
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|
2011-05-19 17:47:32 -06:00
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pr_debug(" ");
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pr_debug("bRequestType(%02X) bRequest(%02X) wValue(%04X) wIndex(%04X) "
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"wLength(%04X) ", cmd->bRequestType, cmd->bRequest,
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cmd->wValue, cmd->wIndex, cmd->wLength);
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pr_debug("\n ");
|
2008-07-09 14:56:51 -06:00
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if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
|
2011-05-19 17:47:32 -06:00
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pr_debug("STANDARD ");
|
2008-07-09 14:56:51 -06:00
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switch (cmd->bRequest) {
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|
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case USB_REQ_GET_STATUS:
|
2011-05-19 17:47:32 -06:00
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pr_debug("GET_STATUS\n");
|
2008-07-09 14:56:51 -06:00
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break;
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case USB_REQ_CLEAR_FEATURE:
|
2011-05-19 17:47:32 -06:00
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pr_debug("CLEAR_FEAT\n");
|
2008-07-09 14:56:51 -06:00
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break;
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case USB_REQ_SET_FEATURE:
|
2011-06-06 07:07:31 -06:00
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pr_debug("SET_FEAT\n");
|
2008-07-09 14:56:51 -06:00
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break;
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case USB_REQ_SET_ADDRESS:
|
2011-05-19 17:47:32 -06:00
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pr_debug("SET_ADDRRS\n");
|
2008-07-09 14:56:51 -06:00
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break;
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|
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case USB_REQ_GET_DESCRIPTOR:
|
2011-05-19 17:47:32 -06:00
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pr_debug("GET_DESCRI\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
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|
|
case USB_REQ_SET_DESCRIPTOR:
|
2011-05-19 17:47:32 -06:00
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pr_debug("SET_DESCRI\n");
|
2008-07-09 14:56:51 -06:00
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break;
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|
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|
case USB_REQ_GET_CONFIGURATION:
|
2011-05-19 17:47:32 -06:00
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|
|
pr_debug("GET_CONFIG\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
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|
|
|
case USB_REQ_SET_CONFIGURATION:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("SET_CONFIG\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
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|
|
|
case USB_REQ_GET_INTERFACE:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("GET_INTERF\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
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|
|
|
case USB_REQ_SET_INTERFACE:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("SET_INTERF\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
|
|
|
|
case USB_REQ_SYNCH_FRAME:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("SYNC_FRAME\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
|
|
|
|
default:
|
2011-06-06 07:07:31 -06:00
|
|
|
pr_debug("REQ(%02X)\n", cmd->bRequest);
|
2011-05-06 04:47:54 -06:00
|
|
|
break;
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
usbip_dump_request_type(cmd->bRequestType);
|
2011-05-19 17:47:32 -06:00
|
|
|
} else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS) {
|
2011-06-06 07:07:31 -06:00
|
|
|
pr_debug("CLASS\n");
|
2011-05-19 17:47:32 -06:00
|
|
|
} else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_VENDOR) {
|
2011-06-06 07:07:31 -06:00
|
|
|
pr_debug("VENDOR\n");
|
2011-05-19 17:47:32 -06:00
|
|
|
} else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_RESERVED) {
|
|
|
|
pr_debug("RESERVED\n");
|
|
|
|
}
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
void usbip_dump_urb(struct urb *urb)
|
|
|
|
{
|
|
|
|
struct device *dev;
|
|
|
|
|
|
|
|
if (!urb) {
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("urb: null pointer!!\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!urb->dev) {
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("urb->dev: null pointer!!\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
return;
|
|
|
|
}
|
2011-05-19 17:47:32 -06:00
|
|
|
|
2008-07-09 14:56:51 -06:00
|
|
|
dev = &urb->dev->dev;
|
|
|
|
|
|
|
|
dev_dbg(dev, " urb :%p\n", urb);
|
|
|
|
dev_dbg(dev, " dev :%p\n", urb->dev);
|
|
|
|
|
|
|
|
usbip_dump_usb_device(urb->dev);
|
|
|
|
|
|
|
|
dev_dbg(dev, " pipe :%08x ", urb->pipe);
|
|
|
|
|
|
|
|
usbip_dump_pipe(urb->pipe);
|
|
|
|
|
|
|
|
dev_dbg(dev, " status :%d\n", urb->status);
|
|
|
|
dev_dbg(dev, " transfer_flags :%08X\n", urb->transfer_flags);
|
|
|
|
dev_dbg(dev, " transfer_buffer :%p\n", urb->transfer_buffer);
|
2009-07-21 00:46:13 -06:00
|
|
|
dev_dbg(dev, " transfer_buffer_length:%d\n",
|
|
|
|
urb->transfer_buffer_length);
|
2008-07-09 14:56:51 -06:00
|
|
|
dev_dbg(dev, " actual_length :%d\n", urb->actual_length);
|
|
|
|
dev_dbg(dev, " setup_packet :%p\n", urb->setup_packet);
|
|
|
|
|
|
|
|
if (urb->setup_packet && usb_pipetype(urb->pipe) == PIPE_CONTROL)
|
2011-05-06 04:47:46 -06:00
|
|
|
usbip_dump_usb_ctrlrequest(
|
2008-07-09 14:56:51 -06:00
|
|
|
(struct usb_ctrlrequest *)urb->setup_packet);
|
|
|
|
|
|
|
|
dev_dbg(dev, " start_frame :%d\n", urb->start_frame);
|
|
|
|
dev_dbg(dev, " number_of_packets :%d\n", urb->number_of_packets);
|
|
|
|
dev_dbg(dev, " interval :%d\n", urb->interval);
|
|
|
|
dev_dbg(dev, " error_count :%d\n", urb->error_count);
|
|
|
|
dev_dbg(dev, " context :%p\n", urb->context);
|
|
|
|
dev_dbg(dev, " complete :%p\n", urb->complete);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_dump_urb);
|
|
|
|
|
|
|
|
void usbip_dump_header(struct usbip_header *pdu)
|
|
|
|
{
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("BASE: cmd %u seq %u devid %u dir %u ep %u\n",
|
|
|
|
pdu->base.command,
|
|
|
|
pdu->base.seqnum,
|
|
|
|
pdu->base.devid,
|
|
|
|
pdu->base.direction,
|
|
|
|
pdu->base.ep);
|
2008-07-09 14:56:51 -06:00
|
|
|
|
|
|
|
switch (pdu->base.command) {
|
|
|
|
case USBIP_CMD_SUBMIT:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("USBIP_CMD_SUBMIT: "
|
|
|
|
"x_flags %u x_len %u sf %u #p %d iv %d\n",
|
|
|
|
pdu->u.cmd_submit.transfer_flags,
|
|
|
|
pdu->u.cmd_submit.transfer_buffer_length,
|
|
|
|
pdu->u.cmd_submit.start_frame,
|
|
|
|
pdu->u.cmd_submit.number_of_packets,
|
|
|
|
pdu->u.cmd_submit.interval);
|
2011-05-06 04:47:46 -06:00
|
|
|
break;
|
2008-07-09 14:56:51 -06:00
|
|
|
case USBIP_CMD_UNLINK:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("USBIP_CMD_UNLINK: seq %u\n",
|
|
|
|
pdu->u.cmd_unlink.seqnum);
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
|
|
|
|
case USBIP_RET_SUBMIT:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("USBIP_RET_SUBMIT: st %d al %u sf %d #p %d ec %d\n",
|
|
|
|
pdu->u.ret_submit.status,
|
|
|
|
pdu->u.ret_submit.actual_length,
|
|
|
|
pdu->u.ret_submit.start_frame,
|
|
|
|
pdu->u.ret_submit.number_of_packets,
|
|
|
|
pdu->u.ret_submit.error_count);
|
|
|
|
break;
|
2008-07-09 14:56:51 -06:00
|
|
|
case USBIP_RET_UNLINK:
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_debug("USBIP_RET_UNLINK: status %d\n",
|
|
|
|
pdu->u.ret_unlink.status);
|
2008-07-09 14:56:51 -06:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* NOT REACHED */
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_err("unknown command\n");
|
2011-05-06 04:47:54 -06:00
|
|
|
break;
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_dump_header);
|
|
|
|
|
2011-12-19 15:44:11 -07:00
|
|
|
/* Receive data over TCP/IP. */
|
|
|
|
int usbip_recv(struct socket *sock, void *buf, int size)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
int result;
|
|
|
|
struct msghdr msg;
|
|
|
|
struct kvec iov;
|
|
|
|
int total = 0;
|
|
|
|
|
2009-07-21 00:46:13 -06:00
|
|
|
/* for blocks of if (usbip_dbg_flag_xmit) */
|
2008-07-09 14:56:51 -06:00
|
|
|
char *bp = buf;
|
|
|
|
int osize = size;
|
|
|
|
|
2009-07-21 00:46:13 -06:00
|
|
|
usbip_dbg_xmit("enter\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
|
|
|
|
if (!sock || !buf || !size) {
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_err("invalid arg, sock %p buff %p size %d\n", sock, buf,
|
|
|
|
size);
|
2008-07-09 14:56:51 -06:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
do {
|
|
|
|
sock->sk->sk_allocation = GFP_NOIO;
|
|
|
|
iov.iov_base = buf;
|
|
|
|
iov.iov_len = size;
|
|
|
|
msg.msg_name = NULL;
|
|
|
|
msg.msg_namelen = 0;
|
|
|
|
msg.msg_control = NULL;
|
|
|
|
msg.msg_controllen = 0;
|
2011-12-19 15:44:11 -07:00
|
|
|
msg.msg_flags = MSG_NOSIGNAL;
|
2008-07-09 14:56:51 -06:00
|
|
|
|
2011-12-19 15:44:11 -07:00
|
|
|
result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL);
|
2008-07-09 14:56:51 -06:00
|
|
|
if (result <= 0) {
|
2011-12-19 15:44:11 -07:00
|
|
|
pr_debug("receive sock %p buf %p size %u ret %d total %d\n",
|
|
|
|
sock, buf, size, result, total);
|
2008-07-09 14:56:51 -06:00
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
size -= result;
|
|
|
|
buf += result;
|
|
|
|
total += result;
|
|
|
|
} while (size > 0);
|
|
|
|
|
2009-07-21 00:46:13 -06:00
|
|
|
if (usbip_dbg_flag_xmit) {
|
2011-12-19 15:44:11 -07:00
|
|
|
if (!in_interrupt())
|
|
|
|
pr_debug("%-10s:", current->comm);
|
|
|
|
else
|
|
|
|
pr_debug("interrupt :");
|
2008-07-09 14:56:51 -06:00
|
|
|
|
2011-12-19 15:44:11 -07:00
|
|
|
pr_debug("receiving....\n");
|
|
|
|
usbip_dump_buffer(bp, osize);
|
|
|
|
pr_debug("received, osize %d ret %d size %d total %d\n",
|
2013-04-04 08:03:07 -06:00
|
|
|
osize, result, size, total);
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
return total;
|
|
|
|
|
|
|
|
err:
|
|
|
|
return result;
|
|
|
|
}
|
2011-12-19 15:44:11 -07:00
|
|
|
EXPORT_SYMBOL_GPL(usbip_recv);
|
2008-07-09 14:56:51 -06:00
|
|
|
|
|
|
|
struct socket *sockfd_to_socket(unsigned int sockfd)
|
|
|
|
{
|
|
|
|
struct socket *socket;
|
|
|
|
struct file *file;
|
|
|
|
struct inode *inode;
|
|
|
|
|
|
|
|
file = fget(sockfd);
|
|
|
|
if (!file) {
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_err("invalid sockfd\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-01-23 15:07:38 -07:00
|
|
|
inode = file_inode(file);
|
2008-07-09 14:56:51 -06:00
|
|
|
|
2012-10-21 13:45:00 -06:00
|
|
|
if (!inode || !S_ISSOCK(inode->i_mode)) {
|
|
|
|
fput(file);
|
2008-07-09 14:56:51 -06:00
|
|
|
return NULL;
|
2012-10-21 13:45:00 -06:00
|
|
|
}
|
2008-07-09 14:56:51 -06:00
|
|
|
|
|
|
|
socket = SOCKET_I(inode);
|
|
|
|
|
|
|
|
return socket;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(sockfd_to_socket);
|
|
|
|
|
|
|
|
/* there may be more cases to tweak the flags. */
|
|
|
|
static unsigned int tweak_transfer_flags(unsigned int flags)
|
|
|
|
{
|
2010-04-30 14:35:37 -06:00
|
|
|
flags &= ~URB_NO_TRANSFER_DMA_MAP;
|
2008-07-09 14:56:51 -06:00
|
|
|
return flags;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void usbip_pack_cmd_submit(struct usbip_header *pdu, struct urb *urb,
|
2011-05-06 04:47:46 -06:00
|
|
|
int pack)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
struct usbip_header_cmd_submit *spdu = &pdu->u.cmd_submit;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Some members are not still implemented in usbip. I hope this issue
|
|
|
|
* will be discussed when usbip is ported to other operating systems.
|
|
|
|
*/
|
|
|
|
if (pack) {
|
|
|
|
spdu->transfer_flags =
|
2011-05-06 04:47:46 -06:00
|
|
|
tweak_transfer_flags(urb->transfer_flags);
|
2008-07-09 14:56:51 -06:00
|
|
|
spdu->transfer_buffer_length = urb->transfer_buffer_length;
|
|
|
|
spdu->start_frame = urb->start_frame;
|
|
|
|
spdu->number_of_packets = urb->number_of_packets;
|
|
|
|
spdu->interval = urb->interval;
|
|
|
|
} else {
|
|
|
|
urb->transfer_flags = spdu->transfer_flags;
|
|
|
|
urb->transfer_buffer_length = spdu->transfer_buffer_length;
|
|
|
|
urb->start_frame = spdu->start_frame;
|
|
|
|
urb->number_of_packets = spdu->number_of_packets;
|
|
|
|
urb->interval = spdu->interval;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void usbip_pack_ret_submit(struct usbip_header *pdu, struct urb *urb,
|
2011-05-06 04:47:46 -06:00
|
|
|
int pack)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
struct usbip_header_ret_submit *rpdu = &pdu->u.ret_submit;
|
|
|
|
|
|
|
|
if (pack) {
|
|
|
|
rpdu->status = urb->status;
|
|
|
|
rpdu->actual_length = urb->actual_length;
|
|
|
|
rpdu->start_frame = urb->start_frame;
|
2011-04-05 12:26:38 -06:00
|
|
|
rpdu->number_of_packets = urb->number_of_packets;
|
2008-07-09 14:56:51 -06:00
|
|
|
rpdu->error_count = urb->error_count;
|
|
|
|
} else {
|
|
|
|
urb->status = rpdu->status;
|
|
|
|
urb->actual_length = rpdu->actual_length;
|
|
|
|
urb->start_frame = rpdu->start_frame;
|
2011-04-05 12:26:38 -06:00
|
|
|
urb->number_of_packets = rpdu->number_of_packets;
|
2008-07-09 14:56:51 -06:00
|
|
|
urb->error_count = rpdu->error_count;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd,
|
2011-05-06 04:47:46 -06:00
|
|
|
int pack)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
switch (cmd) {
|
|
|
|
case USBIP_CMD_SUBMIT:
|
|
|
|
usbip_pack_cmd_submit(pdu, urb, pack);
|
|
|
|
break;
|
|
|
|
case USBIP_RET_SUBMIT:
|
|
|
|
usbip_pack_ret_submit(pdu, urb, pack);
|
|
|
|
break;
|
|
|
|
default:
|
2011-05-06 04:47:54 -06:00
|
|
|
/* NOT REACHED */
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_err("unknown command\n");
|
2011-05-06 04:47:54 -06:00
|
|
|
break;
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_pack_pdu);
|
|
|
|
|
|
|
|
static void correct_endian_basic(struct usbip_header_basic *base, int send)
|
|
|
|
{
|
|
|
|
if (send) {
|
|
|
|
base->command = cpu_to_be32(base->command);
|
|
|
|
base->seqnum = cpu_to_be32(base->seqnum);
|
|
|
|
base->devid = cpu_to_be32(base->devid);
|
|
|
|
base->direction = cpu_to_be32(base->direction);
|
|
|
|
base->ep = cpu_to_be32(base->ep);
|
|
|
|
} else {
|
|
|
|
base->command = be32_to_cpu(base->command);
|
|
|
|
base->seqnum = be32_to_cpu(base->seqnum);
|
|
|
|
base->devid = be32_to_cpu(base->devid);
|
|
|
|
base->direction = be32_to_cpu(base->direction);
|
|
|
|
base->ep = be32_to_cpu(base->ep);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void correct_endian_cmd_submit(struct usbip_header_cmd_submit *pdu,
|
2011-05-06 04:47:46 -06:00
|
|
|
int send)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
if (send) {
|
|
|
|
pdu->transfer_flags = cpu_to_be32(pdu->transfer_flags);
|
|
|
|
|
|
|
|
cpu_to_be32s(&pdu->transfer_buffer_length);
|
|
|
|
cpu_to_be32s(&pdu->start_frame);
|
|
|
|
cpu_to_be32s(&pdu->number_of_packets);
|
|
|
|
cpu_to_be32s(&pdu->interval);
|
|
|
|
} else {
|
|
|
|
pdu->transfer_flags = be32_to_cpu(pdu->transfer_flags);
|
|
|
|
|
|
|
|
be32_to_cpus(&pdu->transfer_buffer_length);
|
|
|
|
be32_to_cpus(&pdu->start_frame);
|
|
|
|
be32_to_cpus(&pdu->number_of_packets);
|
|
|
|
be32_to_cpus(&pdu->interval);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void correct_endian_ret_submit(struct usbip_header_ret_submit *pdu,
|
2011-05-06 04:47:46 -06:00
|
|
|
int send)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
if (send) {
|
|
|
|
cpu_to_be32s(&pdu->status);
|
|
|
|
cpu_to_be32s(&pdu->actual_length);
|
|
|
|
cpu_to_be32s(&pdu->start_frame);
|
2011-04-05 12:26:38 -06:00
|
|
|
cpu_to_be32s(&pdu->number_of_packets);
|
2008-07-09 14:56:51 -06:00
|
|
|
cpu_to_be32s(&pdu->error_count);
|
|
|
|
} else {
|
|
|
|
be32_to_cpus(&pdu->status);
|
|
|
|
be32_to_cpus(&pdu->actual_length);
|
|
|
|
be32_to_cpus(&pdu->start_frame);
|
2011-05-12 04:31:11 -06:00
|
|
|
be32_to_cpus(&pdu->number_of_packets);
|
2008-07-09 14:56:51 -06:00
|
|
|
be32_to_cpus(&pdu->error_count);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void correct_endian_cmd_unlink(struct usbip_header_cmd_unlink *pdu,
|
2011-05-06 04:47:46 -06:00
|
|
|
int send)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
if (send)
|
|
|
|
pdu->seqnum = cpu_to_be32(pdu->seqnum);
|
|
|
|
else
|
|
|
|
pdu->seqnum = be32_to_cpu(pdu->seqnum);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void correct_endian_ret_unlink(struct usbip_header_ret_unlink *pdu,
|
2011-05-06 04:47:46 -06:00
|
|
|
int send)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
if (send)
|
|
|
|
cpu_to_be32s(&pdu->status);
|
|
|
|
else
|
|
|
|
be32_to_cpus(&pdu->status);
|
|
|
|
}
|
|
|
|
|
|
|
|
void usbip_header_correct_endian(struct usbip_header *pdu, int send)
|
|
|
|
{
|
|
|
|
__u32 cmd = 0;
|
|
|
|
|
|
|
|
if (send)
|
|
|
|
cmd = pdu->base.command;
|
|
|
|
|
|
|
|
correct_endian_basic(&pdu->base, send);
|
|
|
|
|
|
|
|
if (!send)
|
|
|
|
cmd = pdu->base.command;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case USBIP_CMD_SUBMIT:
|
|
|
|
correct_endian_cmd_submit(&pdu->u.cmd_submit, send);
|
|
|
|
break;
|
|
|
|
case USBIP_RET_SUBMIT:
|
|
|
|
correct_endian_ret_submit(&pdu->u.ret_submit, send);
|
|
|
|
break;
|
|
|
|
case USBIP_CMD_UNLINK:
|
|
|
|
correct_endian_cmd_unlink(&pdu->u.cmd_unlink, send);
|
|
|
|
break;
|
|
|
|
case USBIP_RET_UNLINK:
|
|
|
|
correct_endian_ret_unlink(&pdu->u.ret_unlink, send);
|
|
|
|
break;
|
|
|
|
default:
|
2011-05-06 04:47:54 -06:00
|
|
|
/* NOT REACHED */
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_err("unknown command\n");
|
2011-05-06 04:47:54 -06:00
|
|
|
break;
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_header_correct_endian);
|
|
|
|
|
2011-05-19 22:37:01 -06:00
|
|
|
static void usbip_iso_packet_correct_endian(
|
2011-05-19 22:36:56 -06:00
|
|
|
struct usbip_iso_packet_descriptor *iso, int send)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
/* does not need all members. but copy all simply. */
|
|
|
|
if (send) {
|
|
|
|
iso->offset = cpu_to_be32(iso->offset);
|
|
|
|
iso->length = cpu_to_be32(iso->length);
|
|
|
|
iso->status = cpu_to_be32(iso->status);
|
|
|
|
iso->actual_length = cpu_to_be32(iso->actual_length);
|
|
|
|
} else {
|
|
|
|
iso->offset = be32_to_cpu(iso->offset);
|
|
|
|
iso->length = be32_to_cpu(iso->length);
|
|
|
|
iso->status = be32_to_cpu(iso->status);
|
|
|
|
iso->actual_length = be32_to_cpu(iso->actual_length);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void usbip_pack_iso(struct usbip_iso_packet_descriptor *iso,
|
2011-05-06 04:47:46 -06:00
|
|
|
struct usb_iso_packet_descriptor *uiso, int pack)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
if (pack) {
|
|
|
|
iso->offset = uiso->offset;
|
|
|
|
iso->length = uiso->length;
|
|
|
|
iso->status = uiso->status;
|
|
|
|
iso->actual_length = uiso->actual_length;
|
|
|
|
} else {
|
|
|
|
uiso->offset = iso->offset;
|
|
|
|
uiso->length = iso->length;
|
|
|
|
uiso->status = iso->status;
|
|
|
|
uiso->actual_length = iso->actual_length;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* must free buffer */
|
2012-10-10 11:34:25 -06:00
|
|
|
struct usbip_iso_packet_descriptor*
|
|
|
|
usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
struct usbip_iso_packet_descriptor *iso;
|
|
|
|
int np = urb->number_of_packets;
|
|
|
|
ssize_t size = np * sizeof(*iso);
|
|
|
|
int i;
|
|
|
|
|
2012-10-10 11:34:25 -06:00
|
|
|
iso = kzalloc(size, GFP_KERNEL);
|
|
|
|
if (!iso)
|
2008-07-09 14:56:51 -06:00
|
|
|
return NULL;
|
|
|
|
|
|
|
|
for (i = 0; i < np; i++) {
|
2012-10-10 11:34:25 -06:00
|
|
|
usbip_pack_iso(&iso[i], &urb->iso_frame_desc[i], 1);
|
|
|
|
usbip_iso_packet_correct_endian(&iso[i], 1);
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
*bufflen = size;
|
|
|
|
|
2012-10-10 11:34:25 -06:00
|
|
|
return iso;
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_alloc_iso_desc_pdu);
|
|
|
|
|
|
|
|
/* some members of urb must be substituted before. */
|
|
|
|
int usbip_recv_iso(struct usbip_device *ud, struct urb *urb)
|
|
|
|
{
|
|
|
|
void *buff;
|
|
|
|
struct usbip_iso_packet_descriptor *iso;
|
|
|
|
int np = urb->number_of_packets;
|
|
|
|
int size = np * sizeof(*iso);
|
|
|
|
int i;
|
|
|
|
int ret;
|
2011-04-05 12:26:59 -06:00
|
|
|
int total_length = 0;
|
2008-07-09 14:56:51 -06:00
|
|
|
|
|
|
|
if (!usb_pipeisoc(urb->pipe))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* my Bluetooth dongle gets ISO URBs which are np = 0 */
|
2013-01-16 20:16:05 -07:00
|
|
|
if (np == 0)
|
2008-07-09 14:56:51 -06:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
buff = kzalloc(size, GFP_KERNEL);
|
|
|
|
if (!buff)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2011-12-19 15:44:11 -07:00
|
|
|
ret = usbip_recv(ud->tcp_socket, buff, size);
|
2008-07-09 14:56:51 -06:00
|
|
|
if (ret != size) {
|
|
|
|
dev_err(&urb->dev->dev, "recv iso_frame_descriptor, %d\n",
|
|
|
|
ret);
|
|
|
|
kfree(buff);
|
|
|
|
|
|
|
|
if (ud->side == USBIP_STUB)
|
|
|
|
usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
|
|
|
|
else
|
|
|
|
usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
|
|
|
|
|
|
|
|
return -EPIPE;
|
|
|
|
}
|
|
|
|
|
2012-10-10 11:34:25 -06:00
|
|
|
iso = (struct usbip_iso_packet_descriptor *) buff;
|
2008-07-09 14:56:51 -06:00
|
|
|
for (i = 0; i < np; i++) {
|
2012-10-10 11:34:25 -06:00
|
|
|
usbip_iso_packet_correct_endian(&iso[i], 0);
|
|
|
|
usbip_pack_iso(&iso[i], &urb->iso_frame_desc[i], 0);
|
2011-04-05 12:26:59 -06:00
|
|
|
total_length += urb->iso_frame_desc[i].actual_length;
|
2008-07-09 14:56:51 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
kfree(buff);
|
|
|
|
|
2011-04-05 12:26:59 -06:00
|
|
|
if (total_length != urb->actual_length) {
|
|
|
|
dev_err(&urb->dev->dev,
|
2011-05-06 04:47:46 -06:00
|
|
|
"total length of iso packets %d not equal to actual "
|
|
|
|
"length of buffer %d\n",
|
|
|
|
total_length, urb->actual_length);
|
2011-04-05 12:26:59 -06:00
|
|
|
|
|
|
|
if (ud->side == USBIP_STUB)
|
|
|
|
usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
|
|
|
|
else
|
|
|
|
usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
|
|
|
|
|
|
|
|
return -EPIPE;
|
|
|
|
}
|
|
|
|
|
2008-07-09 14:56:51 -06:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_recv_iso);
|
|
|
|
|
2011-04-05 12:26:59 -06:00
|
|
|
/*
|
|
|
|
* This functions restores the padding which was removed for optimizing
|
|
|
|
* the bandwidth during transfer over tcp/ip
|
|
|
|
*
|
|
|
|
* buffer and iso packets need to be stored and be in propeper endian in urb
|
|
|
|
* before calling this function
|
|
|
|
*/
|
2012-01-23 08:55:46 -07:00
|
|
|
void usbip_pad_iso(struct usbip_device *ud, struct urb *urb)
|
2011-04-05 12:26:59 -06:00
|
|
|
{
|
|
|
|
int np = urb->number_of_packets;
|
|
|
|
int i;
|
|
|
|
int actualoffset = urb->actual_length;
|
|
|
|
|
|
|
|
if (!usb_pipeisoc(urb->pipe))
|
2012-01-23 08:55:46 -07:00
|
|
|
return;
|
2011-04-05 12:26:59 -06:00
|
|
|
|
|
|
|
/* if no packets or length of data is 0, then nothing to unpack */
|
|
|
|
if (np == 0 || urb->actual_length == 0)
|
2012-01-23 08:55:46 -07:00
|
|
|
return;
|
2011-04-05 12:26:59 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* if actual_length is transfer_buffer_length then no padding is
|
|
|
|
* present.
|
2012-10-10 11:34:27 -06:00
|
|
|
*/
|
2011-04-05 12:26:59 -06:00
|
|
|
if (urb->actual_length == urb->transfer_buffer_length)
|
2012-01-23 08:55:46 -07:00
|
|
|
return;
|
2011-04-05 12:26:59 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* loop over all packets from last to first (to prevent overwritting
|
|
|
|
* memory when padding) and move them into the proper place
|
|
|
|
*/
|
|
|
|
for (i = np-1; i > 0; i--) {
|
|
|
|
actualoffset -= urb->iso_frame_desc[i].actual_length;
|
|
|
|
memmove(urb->transfer_buffer + urb->iso_frame_desc[i].offset,
|
2011-05-06 04:47:46 -06:00
|
|
|
urb->transfer_buffer + actualoffset,
|
|
|
|
urb->iso_frame_desc[i].actual_length);
|
2011-04-05 12:26:59 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_pad_iso);
|
2008-07-09 14:56:51 -06:00
|
|
|
|
|
|
|
/* some members of urb must be substituted before. */
|
|
|
|
int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
int size;
|
|
|
|
|
|
|
|
if (ud->side == USBIP_STUB) {
|
|
|
|
/* the direction of urb must be OUT. */
|
|
|
|
if (usb_pipein(urb->pipe))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
size = urb->transfer_buffer_length;
|
|
|
|
} else {
|
|
|
|
/* the direction of urb must be IN. */
|
|
|
|
if (usb_pipeout(urb->pipe))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
size = urb->actual_length;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* no need to recv xbuff */
|
|
|
|
if (!(size > 0))
|
|
|
|
return 0;
|
|
|
|
|
2011-12-19 15:44:11 -07:00
|
|
|
ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size);
|
2008-07-09 14:56:51 -06:00
|
|
|
if (ret != size) {
|
|
|
|
dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);
|
|
|
|
if (ud->side == USBIP_STUB) {
|
|
|
|
usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
|
|
|
|
} else {
|
|
|
|
usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
|
|
|
|
return -EPIPE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usbip_recv_xbuff);
|
|
|
|
|
2011-05-19 22:37:05 -06:00
|
|
|
static int __init usbip_core_init(void)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
2011-05-19 17:47:32 -06:00
|
|
|
pr_info(DRIVER_DESC " v" USBIP_VERSION "\n");
|
2008-07-09 14:56:51 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-19 22:37:05 -06:00
|
|
|
static void __exit usbip_core_exit(void)
|
2008-07-09 14:56:51 -06:00
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2011-05-19 22:37:05 -06:00
|
|
|
module_init(usbip_core_init);
|
|
|
|
module_exit(usbip_core_exit);
|
2008-07-09 14:56:51 -06:00
|
|
|
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
|
|
MODULE_LICENSE("GPL");
|
2011-05-11 02:54:14 -06:00
|
|
|
MODULE_VERSION(USBIP_VERSION);
|