linux/drivers/usb/usbip/vhci_sysfs.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2003-2008 Takahiro Hirofuchi
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
* Copyright (C) 2015-2016 Nobuo Iwata
*/
#include <linux/kthread.h>
#include <linux/file.h>
#include <linux/net.h>
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
#include <linux/platform_device.h>
#include <linux/slab.h>
/* Hardening for Spectre-v1 */
#include <linux/nospec.h>
#include "usbip_common.h"
#include "vhci.h"
/* TODO: refine locking ?*/
/*
* output example:
* hub port sta spd dev sockfd local_busid
* hs 0000 004 000 00000000 000003 1-2.3
* ................................................
* ss 0008 004 000 00000000 000004 2-3.4
* ................................................
*
* Output includes socket fd instead of socket pointer address to avoid
* leaking kernel memory address in:
* /sys/devices/platform/vhci_hcd.0/status and in debug output.
* The socket pointer address is not used at the moment and it was made
* visible as a convenient way to find IP address from socket pointer
* address by looking up /proc/net/{tcp,tcp6}. As this opens a security
* hole, the change is made to use sockfd instead.
*
*/
static void port_show_vhci(char **out, int hub, int port, struct vhci_device *vdev)
{
if (hub == HUB_SPEED_HIGH)
*out += sprintf(*out, "hs %04u %03u ",
port, vdev->ud.status);
else /* hub == HUB_SPEED_SUPER */
*out += sprintf(*out, "ss %04u %03u ",
port, vdev->ud.status);
if (vdev->ud.status == VDEV_ST_USED) {
*out += sprintf(*out, "%03u %08x ",
vdev->speed, vdev->devid);
*out += sprintf(*out, "%06u %s",
vdev->ud.sockfd,
dev_name(&vdev->udev->dev));
} else {
*out += sprintf(*out, "000 00000000 ");
*out += sprintf(*out, "000000 0-0");
}
*out += sprintf(*out, "\n");
}
/* Sysfs entry to show port status */
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
static ssize_t status_show_vhci(int pdev_nr, char *out)
{
struct platform_device *pdev = vhcis[pdev_nr].pdev;
struct vhci *vhci;
struct usb_hcd *hcd;
struct vhci_hcd *vhci_hcd;
char *s = out;
int i;
unsigned long flags;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (!pdev || !out) {
usbip_dbg_vhci_sysfs("show status error\n");
return 0;
}
hcd = platform_get_drvdata(pdev);
vhci_hcd = hcd_to_vhci_hcd(hcd);
vhci = vhci_hcd->vhci;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_lock_irqsave(&vhci->lock, flags);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
for (i = 0; i < VHCI_HC_PORTS; i++) {
struct vhci_device *vdev = &vhci->vhci_hcd_hs->vdev[i];
spin_lock(&vdev->ud.lock);
port_show_vhci(&out, HUB_SPEED_HIGH,
pdev_nr * VHCI_PORTS + i, vdev);
spin_unlock(&vdev->ud.lock);
}
for (i = 0; i < VHCI_HC_PORTS; i++) {
struct vhci_device *vdev = &vhci->vhci_hcd_ss->vdev[i];
spin_lock(&vdev->ud.lock);
port_show_vhci(&out, HUB_SPEED_SUPER,
pdev_nr * VHCI_PORTS + VHCI_HC_PORTS + i, vdev);
spin_unlock(&vdev->ud.lock);
}
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_unlock_irqrestore(&vhci->lock, flags);
return out - s;
}
static ssize_t status_show_not_ready(int pdev_nr, char *out)
{
char *s = out;
int i = 0;
for (i = 0; i < VHCI_HC_PORTS; i++) {
out += sprintf(out, "hs %04u %03u ",
(pdev_nr * VHCI_PORTS) + i,
VDEV_ST_NOTASSIGNED);
out += sprintf(out, "000 00000000 0000000000000000 0-0");
out += sprintf(out, "\n");
}
for (i = 0; i < VHCI_HC_PORTS; i++) {
out += sprintf(out, "ss %04u %03u ",
(pdev_nr * VHCI_PORTS) + VHCI_HC_PORTS + i,
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
VDEV_ST_NOTASSIGNED);
out += sprintf(out, "000 00000000 0000000000000000 0-0");
out += sprintf(out, "\n");
}
return out - s;
}
static int status_name_to_id(const char *name)
{
char *c;
long val;
int ret;
c = strchr(name, '.');
if (c == NULL)
return 0;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
ret = kstrtol(c+1, 10, &val);
if (ret < 0)
return ret;
return val;
}
static ssize_t status_show(struct device *dev,
struct device_attribute *attr, char *out)
{
char *s = out;
int pdev_nr;
out += sprintf(out,
"hub port sta spd dev sockfd local_busid\n");
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
pdev_nr = status_name_to_id(attr->attr.name);
if (pdev_nr < 0)
out += status_show_not_ready(pdev_nr, out);
else
out += status_show_vhci(pdev_nr, out);
return out - s;
}
static ssize_t nports_show(struct device *dev, struct device_attribute *attr,
char *out)
{
char *s = out;
/*
* Half the ports are for SPEED_HIGH and half for SPEED_SUPER,
* thus the * 2.
*/
out += sprintf(out, "%d\n", VHCI_PORTS * vhci_num_controllers);
return out - s;
}
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
static DEVICE_ATTR_RO(nports);
/* Sysfs entry to shutdown a virtual connection */
static int vhci_port_disconnect(struct vhci_hcd *vhci_hcd, __u32 rhport)
{
struct vhci_device *vdev = &vhci_hcd->vdev[rhport];
struct vhci *vhci = vhci_hcd->vhci;
unsigned long flags;
usbip_dbg_vhci_sysfs("enter\n");
/* lock */
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_lock_irqsave(&vhci->lock, flags);
spin_lock(&vdev->ud.lock);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (vdev->ud.status == VDEV_ST_NULL) {
pr_err("not connected %d\n", vdev->ud.status);
/* unlock */
spin_unlock(&vdev->ud.lock);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_unlock_irqrestore(&vhci->lock, flags);
return -EINVAL;
}
/* unlock */
spin_unlock(&vdev->ud.lock);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_unlock_irqrestore(&vhci->lock, flags);
usbip_event_add(&vdev->ud, VDEV_EVENT_DOWN);
return 0;
}
static int valid_port(__u32 *pdev_nr, __u32 *rhport)
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
{
if (*pdev_nr >= vhci_num_controllers) {
pr_err("pdev %u\n", *pdev_nr);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
return 0;
}
*pdev_nr = array_index_nospec(*pdev_nr, vhci_num_controllers);
if (*rhport >= VHCI_HC_PORTS) {
pr_err("rhport %u\n", *rhport);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
return 0;
}
*rhport = array_index_nospec(*rhport, VHCI_HC_PORTS);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
return 1;
}
static ssize_t detach_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
__u32 port = 0, pdev_nr = 0, rhport = 0;
struct usb_hcd *hcd;
struct vhci_hcd *vhci_hcd;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
int ret;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (kstrtoint(buf, 10, &port) < 0)
return -EINVAL;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
pdev_nr = port_to_pdev_nr(port);
rhport = port_to_rhport(port);
if (!valid_port(&pdev_nr, &rhport))
return -EINVAL;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
hcd = platform_get_drvdata(vhcis[pdev_nr].pdev);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (hcd == NULL) {
dev_err(dev, "port is not ready %u\n", port);
return -EAGAIN;
}
usbip_dbg_vhci_sysfs("rhport %d\n", rhport);
if ((port / VHCI_HC_PORTS) % 2)
vhci_hcd = hcd_to_vhci_hcd(hcd)->vhci->vhci_hcd_ss;
else
vhci_hcd = hcd_to_vhci_hcd(hcd)->vhci->vhci_hcd_hs;
ret = vhci_port_disconnect(vhci_hcd, rhport);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (ret < 0)
return -EINVAL;
usbip_dbg_vhci_sysfs("Leave\n");
return count;
}
static DEVICE_ATTR_WO(detach);
static int valid_args(__u32 *pdev_nr, __u32 *rhport,
enum usb_device_speed speed)
{
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (!valid_port(pdev_nr, rhport)) {
return 0;
}
switch (speed) {
case USB_SPEED_LOW:
case USB_SPEED_FULL:
case USB_SPEED_HIGH:
case USB_SPEED_WIRELESS:
case USB_SPEED_SUPER:
break;
default:
pr_err("Failed attach request for unsupported USB speed: %s\n",
usb_speed_string(speed));
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
return 0;
}
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
return 1;
}
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
/* Sysfs entry to establish a virtual connection */
/*
* To start a new USB/IP attachment, a userland program needs to setup a TCP
* connection and then write its socket descriptor with remote device
* information into this sysfs file.
*
* A remote device is virtually attached to the root-hub port of @rhport with
* @speed. @devid is embedded into a request to specify the remote device in a
* server host.
*
* write() returns 0 on success, else negative errno.
*/
static ssize_t attach_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct socket *socket;
int sockfd = 0;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
__u32 port = 0, pdev_nr = 0, rhport = 0, devid = 0, speed = 0;
struct usb_hcd *hcd;
struct vhci_hcd *vhci_hcd;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
struct vhci_device *vdev;
struct vhci *vhci;
int err;
unsigned long flags;
/*
* @rhport: port number of vhci_hcd
* @sockfd: socket descriptor of an established TCP connection
* @devid: unique device identifier in a remote host
* @speed: usb device speed in a remote host
*/
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (sscanf(buf, "%u %u %u %u", &port, &sockfd, &devid, &speed) != 4)
return -EINVAL;
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
pdev_nr = port_to_pdev_nr(port);
rhport = port_to_rhport(port);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
usbip_dbg_vhci_sysfs("port(%u) pdev(%d) rhport(%u)\n",
port, pdev_nr, rhport);
usbip_dbg_vhci_sysfs("sockfd(%u) devid(%u) speed(%u)\n",
sockfd, devid, speed);
/* check received parameters */
if (!valid_args(&pdev_nr, &rhport, speed))
return -EINVAL;
hcd = platform_get_drvdata(vhcis[pdev_nr].pdev);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
if (hcd == NULL) {
dev_err(dev, "port %d is not ready\n", port);
return -EAGAIN;
}
vhci_hcd = hcd_to_vhci_hcd(hcd);
vhci = vhci_hcd->vhci;
if (speed == USB_SPEED_SUPER)
vdev = &vhci->vhci_hcd_ss->vdev[rhport];
else
vdev = &vhci->vhci_hcd_hs->vdev[rhport];
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
/* Extract socket from fd. */
socket = sockfd_lookup(sockfd, &err);
if (!socket)
return -EINVAL;
/* now need lock until setting vdev status as used */
/* begin a lock */
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_lock_irqsave(&vhci->lock, flags);
spin_lock(&vdev->ud.lock);
if (vdev->ud.status != VDEV_ST_NULL) {
/* end of the lock */
spin_unlock(&vdev->ud.lock);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_unlock_irqrestore(&vhci->lock, flags);
sockfd_put(socket);
dev_err(dev, "port %d already used\n", rhport);
usbip: auto retry for concurrent attach This patch adds recovery from false busy state on concurrent attach operation. The procedure of attach operation is as below. 1) Find an unused port in /sys/devices/platform/vhci_hcd/status. (userspace) 2) Request attach found port to driver through /sys/devices/platform/vhci_hcd/attach. (userspace) 3) Lock table, reserve requested port and unlock table. (vhci driver) Attaching more than one remote devices concurrently, same unused port number will be found in step-1. Then one request will succeed and others will fail even though there are some unused ports. With this patch, driver returns EBUSY when requested port has already been used. In this case, attach command retries from step-1: finding another unused port. If there's no unused port, the attach operation will fail in step-1. Otherwise it retries automatically using another unused port. vhci-hcd's interface (only errno) is changed as following. Current errno New errno Condition EINVAL same as left specified port number is in invalid range EAGAIN same as left platform_get_drvdata() failed EINVAL same as left specified socket fd is not valid EINVAL EBUSY specified port status is not free The errno EBUSY was not used in userspace src/usbip_attach.c:import_device(). It is needed to distinguish the condition to be able to retry from other unrecoverable errors. It is possible to avoid this failure by introducing userspace exclusive control. But it's exaggerated for this special condition. The locking itself has done in driver. As an alternate solution, userspace doesn't specify port number, driver searches unused port and it returns port number to the userspace. With this solution, the interface is much different than this patch. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-29 10:13:34 +08:00
/*
* Will be retried from userspace
* if there's another free port.
*/
return -EBUSY;
}
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
dev_info(dev, "pdev(%u) rhport(%u) sockfd(%d)\n",
pdev_nr, rhport, sockfd);
dev_info(dev, "devid(%u) speed(%u) speed_str(%s)\n",
devid, speed, usb_speed_string(speed));
vdev->devid = devid;
vdev->speed = speed;
vdev->ud.sockfd = sockfd;
vdev->ud.tcp_socket = socket;
vdev->ud.status = VDEV_ST_NOTASSIGNED;
spin_unlock(&vdev->ud.lock);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
spin_unlock_irqrestore(&vhci->lock, flags);
/* end the lock */
vdev->ud.tcp_rx = kthread_get_run(vhci_rx_loop, &vdev->ud, "vhci_rx");
vdev->ud.tcp_tx = kthread_get_run(vhci_tx_loop, &vdev->ud, "vhci_tx");
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
rh_port_connect(vdev, speed);
return count;
}
static DEVICE_ATTR_WO(attach);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
#define MAX_STATUS_NAME 16
struct status_attr {
struct device_attribute attr;
char name[MAX_STATUS_NAME+1];
};
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
static struct status_attr *status_attrs;
static void set_status_attr(int id)
{
struct status_attr *status;
status = status_attrs + id;
if (id == 0)
strcpy(status->name, "status");
else
snprintf(status->name, MAX_STATUS_NAME+1, "status.%d", id);
status->attr.attr.name = status->name;
status->attr.attr.mode = S_IRUGO;
status->attr.show = status_show;
usbip: fix warning in vhci_hcd_probe/lockdep_init_map vhci_hcd calls sysfs_create_group() with dynamically allocated sysfs attributes triggering the lock-class key not persistent warning. Call sysfs_attr_init() for dynamically allocated sysfs attributes to fix it. vhci_hcd vhci_hcd: USB/IP Virtual Host Controller vhci_hcd vhci_hcd: new USB bus registered, assigned bus number 2 BUG: key ffff88006a7e8d18 not in .data! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:3131 lockdep_init_map+0x60c/0x770 DEBUG_LOCKS_WARN_ON(1)[ 1.567044] Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-rc7+ #58 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 ffff88006bce6eb8 ffffffff81f96c8a ffffffff00000a02 1ffff1000d79cd6a ffffed000d79cd62 000000046bce6ed8 0000000041b58ab3 ffffffff8598af40 ffffffff81f969f8 0000000000000000 0000000041b58ab3 0000000000000200 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [<ffffffff81f96c8a>] dump_stack+0x292/0x398 lib/dump_stack.c:51 [<ffffffff812b808f>] __warn+0x19f/0x1e0 kernel/panic.c:550 [<ffffffff812b8195>] warn_slowpath_fmt+0xc5/0x110 kernel/panic.c:565 [<ffffffff813f3efc>] lockdep_init_map+0x60c/0x770 kernel/locking/lockdep.c:3131 [<ffffffff819e43d4>] __kernfs_create_file+0x114/0x2a0 fs/kernfs/file.c:954 [<ffffffff819e68f5>] sysfs_add_file_mode_ns+0x225/0x520 fs/sysfs/file.c:305 [< inline >] create_files fs/sysfs/group.c:64 [<ffffffff819e8a89>] internal_create_group+0x239/0x8f0 fs/sysfs/group.c:134 [<ffffffff819e915f>] sysfs_create_group+0x1f/0x30 fs/sysfs/group.c:156 [<ffffffff8323de24>] vhci_start+0x5b4/0x7a0 drivers/usb/usbip/vhci_hcd.c:978 [<ffffffff82c907ca>] usb_add_hcd+0x8da/0x1c60 drivers/usb/core/hcd.c:2867 [<ffffffff8323bc57>] vhci_hcd_probe+0x97/0x130 drivers/usb/usbip/vhci_hcd.c:1103 --- --- ---[ end trace c33c7b202cf3aac8 ]--- Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-12-06 03:56:38 +08:00
sysfs_attr_init(&status->attr.attr);
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
}
static int init_status_attrs(void)
{
int id;
status_attrs = kcalloc(vhci_num_controllers, sizeof(struct status_attr),
GFP_KERNEL);
if (status_attrs == NULL)
return -ENOMEM;
for (id = 0; id < vhci_num_controllers; id++)
set_status_attr(id);
return 0;
}
static void finish_status_attrs(void)
{
kfree(status_attrs);
}
struct attribute_group vhci_attr_group = {
.attrs = NULL,
};
usbip: vhci extension: modifications to vhci driver Modification to Kconfig, vhci_hc.c, vhci.h and vhci_sysfs.c. 1. kernel config Followings are added. USBIP_VHCI_HC_PORTS: Number of ports per USB/IP virtual host controller. The default is 8 - same as current VHCI_NPORTS. USBIP_VHCI_NR_HCS: Number of USB/IP virtual host controllers. The default is 1. This paratmeter is replaced with USBIP_VHCI_INIT_HCS and USBIP_VHCI_MAX_HCS included in succeeding dynamic extension patch. 2. the_controller to controllers the_controller is changed to vhci_pdevs: array of struct platform_device. 3. vhci_sysfs.c Sysfs structure is changed as following. BEFORE: /sys/devices/platform +-- vhci +-- status +-- attach +-- detach +-- usbip_debug AFTER: example for CONFIG_USBIP_NR_HCS=4 /sys/devices/platform +-- vhci | +-- nports | +-- status | +-- status.1 | +-- status.2 | +-- status.3 | +-- attach | +-- detach | +-- usbip_debug +-- vhci.1 +-- vhci.2 +-- vhci.3 vhci[.N] is shown for each host controller kobj. vhch.1, vhci.2, ... are shown only when CONFIG_USBIP_NR_HCS is more than 1. Only 'vhci' (without number) has user space interfaces. 'nports' is newly added to give ports-per-controller and number of controlles. Before that, number of ports is acquired by reading status lines. Status is divided for each controller to avoid page size (4KB) limitation. Old userspace tool binaries work with the first status within the first controller. Inconsistency between status header and content is fixed. 4th and 5th column are header: "dev bus" content(unused): "000 000" content(used): "%08x", devid Only 1st and 2nd column are used by program. In old version, sscanf() in parse_status expect no bus column. And bus_id string is shown in the last column. Then bus in the header is removed and unused content is replaced with 8 zeros. The sscanf() expects more than 5 columns and new has 6 columns so there's no compatibility issue in this change. Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-13 10:33:40 +08:00
int vhci_init_attr_group(void)
{
struct attribute **attrs;
int ret, i;
attrs = kcalloc((vhci_num_controllers + 5), sizeof(struct attribute *),
GFP_KERNEL);
if (attrs == NULL)
return -ENOMEM;
ret = init_status_attrs();
if (ret) {
kfree(attrs);
return ret;
}
*attrs = &dev_attr_nports.attr;
*(attrs + 1) = &dev_attr_detach.attr;
*(attrs + 2) = &dev_attr_attach.attr;
*(attrs + 3) = &dev_attr_usbip_debug.attr;
for (i = 0; i < vhci_num_controllers; i++)
*(attrs + i + 4) = &((status_attrs + i)->attr.attr);
vhci_attr_group.attrs = attrs;
return 0;
}
void vhci_finish_attr_group(void)
{
finish_status_attrs();
kfree(vhci_attr_group.attrs);
}