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-rw-r--r--drivers/usb/mon/Kconfig16
-rw-r--r--drivers/usb/mon/Makefile3
-rw-r--r--drivers/usb/mon/mon_main.c4
-rw-r--r--drivers/usb/mon/mon_text.c48
-rw-r--r--drivers/usb/mon/usb_mon.h2
5 files changed, 55 insertions, 18 deletions
diff --git a/drivers/usb/mon/Kconfig b/drivers/usb/mon/Kconfig
index 4e6152aa5f1..deb9ddffa40 100644
--- a/drivers/usb/mon/Kconfig
+++ b/drivers/usb/mon/Kconfig
@@ -2,21 +2,15 @@
# USB Monitor configuration
#
-# In normal life, it makes little sense to have usbmon as a module, and in fact
-# it is harmful, because there is no way to autoload the module.
-# The 'm' option is allowed for hackers who debug the usbmon itself,
-# and for those who have usbcore as a module.
config USB_MON
- tristate "USB Monitor"
- depends on USB
+ bool "USB Monitor"
+ depends on USB!=n
default y
help
If you say Y here, a component which captures the USB traffic
between peripheral-specific drivers and HC drivers will be built.
- The USB_MON is similar in spirit and may be compatible with Dave
- Harding's USBMon.
+ For more information, see <file:Documentation/usb/usbmon.txt>.
- This is somewhat experimental at this time, but it should be safe,
- as long as you aren't building this as a module and then removing it.
+ This is somewhat experimental at this time, but it should be safe.
- If unsure, say Y. Do not say M.
+ If unsure, say Y.
diff --git a/drivers/usb/mon/Makefile b/drivers/usb/mon/Makefile
index 3cff8d444bb..b0015b8a1d1 100644
--- a/drivers/usb/mon/Makefile
+++ b/drivers/usb/mon/Makefile
@@ -4,4 +4,5 @@
usbmon-objs := mon_main.o mon_stat.o mon_text.o
-obj-$(CONFIG_USB_MON) += usbmon.o
+# This does not use CONFIG_USB_MON because we want this to use a tristate.
+obj-$(CONFIG_USB) += usbmon.o
diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c
index aa9d00808e4..508a21028db 100644
--- a/drivers/usb/mon/mon_main.c
+++ b/drivers/usb/mon/mon_main.c
@@ -2,6 +2,8 @@
* The USB Monitor, inspired by Dave Harding's USBMon.
*
* mon_main.c: Main file, module initiation and exit, registrations, etc.
+ *
+ * Copyright (C) 2005 Pete Zaitcev (zaitcev@redhat.com)
*/
#include <linux/kernel.h>
@@ -311,7 +313,7 @@ static int __init mon_init(void)
mondir = debugfs_create_dir("usbmon", NULL);
if (IS_ERR(mondir)) {
- printk(KERN_NOTICE TAG ": debugs is not available\n");
+ printk(KERN_NOTICE TAG ": debugfs is not available\n");
return -ENODEV;
}
if (mondir == NULL) {
diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c
index 755a4570477..26266b30028 100644
--- a/drivers/usb/mon/mon_text.c
+++ b/drivers/usb/mon/mon_text.c
@@ -19,11 +19,16 @@
#define DATA_MAX 32
/*
+ * Defined by USB 2.0 clause 9.3, table 9.2.
+ */
+#define SETUP_MAX 8
+
+/*
* This limit exists to prevent OOMs when the user process stops reading.
*/
#define EVENT_MAX 25
-#define PRINTF_DFL 120
+#define PRINTF_DFL 130
struct mon_event_text {
struct list_head e_link;
@@ -33,7 +38,9 @@ struct mon_event_text {
unsigned int tstamp;
int length; /* Depends on type: xfer length or act length */
int status;
+ char setup_flag;
char data_flag;
+ unsigned char setup[SETUP_MAX];
unsigned char data[DATA_MAX];
};
@@ -64,6 +71,22 @@ static void mon_text_dtor(void *, kmem_cache_t *, unsigned long);
* This is called with the whole mon_bus locked, so no additional lock.
*/
+static inline char mon_text_get_setup(struct mon_event_text *ep,
+ struct urb *urb, char ev_type)
+{
+
+ if (!usb_pipecontrol(urb->pipe) || ev_type != 'S')
+ return '-';
+
+ if (urb->transfer_flags & URB_NO_SETUP_DMA_MAP)
+ return 'D';
+ if (urb->setup_packet == NULL)
+ return 'Z'; /* '0' would be not as pretty. */
+
+ memcpy(ep->setup, urb->setup_packet, SETUP_MAX);
+ return 0;
+}
+
static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb,
int len, char ev_type)
{
@@ -90,7 +113,6 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb,
/*
* Bulk is easy to shortcut reliably.
- * XXX Control needs setup packet taken.
* XXX Other pipe types need consideration. Currently, we overdo it
* and collect garbage for them: better more than less.
*/
@@ -144,6 +166,7 @@ static void mon_text_event(struct mon_reader_text *rp, struct urb *urb,
/* Collecting status makes debugging sense for submits, too */
ep->status = urb->status;
+ ep->setup_flag = mon_text_get_setup(ep, urb, ev_type);
ep->data_flag = mon_text_get_data(ep, urb, ep->length, ev_type);
rp->nevents++;
@@ -299,10 +322,25 @@ static ssize_t mon_text_read(struct file *file, char __user *buf,
default: /* PIPE_BULK */ utype = 'B';
}
cnt += snprintf(pbuf + cnt, limit - cnt,
- "%lx %u %c %c%c:%03u:%02u %d %d",
+ "%lx %u %c %c%c:%03u:%02u",
ep->id, ep->tstamp, ep->type,
- utype, udir, usb_pipedevice(ep->pipe), usb_pipeendpoint(ep->pipe),
- ep->status, ep->length);
+ utype, udir, usb_pipedevice(ep->pipe), usb_pipeendpoint(ep->pipe));
+
+ if (ep->setup_flag == 0) { /* Setup packet is present and captured */
+ cnt += snprintf(pbuf + cnt, limit - cnt,
+ " s %02x %02x %04x %04x %04x",
+ ep->setup[0],
+ ep->setup[1],
+ (ep->setup[3] << 8) | ep->setup[2],
+ (ep->setup[5] << 8) | ep->setup[4],
+ (ep->setup[7] << 8) | ep->setup[6]);
+ } else if (ep->setup_flag != '-') { /* Unable to capture setup packet */
+ cnt += snprintf(pbuf + cnt, limit - cnt,
+ " %c __ __ ____ ____ ____", ep->setup_flag);
+ } else { /* No setup for this kind of URB */
+ cnt += snprintf(pbuf + cnt, limit - cnt, " %d", ep->status);
+ }
+ cnt += snprintf(pbuf + cnt, limit - cnt, " %d", ep->length);
if ((data_len = ep->length) > 0) {
if (ep->data_flag == 0) {
diff --git a/drivers/usb/mon/usb_mon.h b/drivers/usb/mon/usb_mon.h
index ed35c18a5c4..9b06784d2c4 100644
--- a/drivers/usb/mon/usb_mon.h
+++ b/drivers/usb/mon/usb_mon.h
@@ -1,5 +1,7 @@
/*
* The USB Monitor, inspired by Dave Harding's USBMon.
+ *
+ * Copyright (C) 2005 Pete Zaitcev (zaitcev@redhat.com)
*/
#ifndef __USB_MON_H
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-02-08 02:08:49 +0000