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author | Pete Zaitcev <zaitcev@redhat.com> | 2009-02-19 22:54:45 -0700 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-24 16:20:36 -0700 |
commit | 471c604daf73ff549d374ee54f9e6bfd5a54d4e8 (patch) | |
tree | ab697965b7d4b1e017bfbe274609de6cbfd21b1a /drivers/usb/mon/mon_bin.c | |
parent | 1ded7ea47b8829a06068c3bb5e3ebe471076617a (diff) | |
download | linux-stable-471c604daf73ff549d374ee54f9e6bfd5a54d4e8.tar.gz linux-stable-471c604daf73ff549d374ee54f9e6bfd5a54d4e8.tar.bz2 linux-stable-471c604daf73ff549d374ee54f9e6bfd5a54d4e8.zip |
USB: usbmon: Add binary API v1
This patch adds an extension to the binary API so it reaches parity with
existing text API (so-called "1u"). The extension delivers additional data,
such as ISO descriptors and the interrupt interval.
Signed-Off-By: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/mon/mon_bin.c')
-rw-r--r-- | drivers/usb/mon/mon_bin.c | 142 |
1 files changed, 116 insertions, 26 deletions
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index 4cf27c72423e..f8d9045d668a 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -37,10 +37,13 @@ #define MON_IOCX_GET _IOW(MON_IOC_MAGIC, 6, struct mon_bin_get) #define MON_IOCX_MFETCH _IOWR(MON_IOC_MAGIC, 7, struct mon_bin_mfetch) #define MON_IOCH_MFLUSH _IO(MON_IOC_MAGIC, 8) +/* #9 was MON_IOCT_SETAPI */ +#define MON_IOCX_GETX _IOW(MON_IOC_MAGIC, 10, struct mon_bin_get) #ifdef CONFIG_COMPAT #define MON_IOCX_GET32 _IOW(MON_IOC_MAGIC, 6, struct mon_bin_get32) #define MON_IOCX_MFETCH32 _IOWR(MON_IOC_MAGIC, 7, struct mon_bin_mfetch32) +#define MON_IOCX_GETX32 _IOW(MON_IOC_MAGIC, 10, struct mon_bin_get32) #endif /* @@ -92,7 +95,29 @@ struct mon_bin_hdr { int status; unsigned int len_urb; /* Length of data (submitted or actual) */ unsigned int len_cap; /* Delivered length */ - unsigned char setup[SETUP_LEN]; /* Only for Control S-type */ + union { + unsigned char setup[SETUP_LEN]; /* Only for Control S-type */ + struct iso_rec { + int error_count; + int numdesc; + } iso; + } s; + int interval; + int start_frame; + unsigned int xfer_flags; + unsigned int ndesc; /* Actual number of ISO descriptors */ +}; + +/* + * ISO vector, packed into the head of data stream. + * This has to take 16 bytes to make sure that the end of buffer + * wrap is not happening in the middle of a descriptor. + */ +struct mon_bin_isodesc { + int iso_status; + unsigned int iso_off; + unsigned int iso_len; + u32 _pad; }; /* per file statistic */ @@ -102,7 +127,7 @@ struct mon_bin_stats { }; struct mon_bin_get { - struct mon_bin_hdr __user *hdr; /* Only 48 bytes, not 64. */ + struct mon_bin_hdr __user *hdr; /* Can be 48 bytes or 64. */ void __user *data; size_t alloc; /* Length of data (can be zero) */ }; @@ -131,6 +156,11 @@ struct mon_bin_mfetch32 { #define PKT_ALIGN 64 #define PKT_SIZE 64 +#define PKT_SZ_API0 48 /* API 0 (2.6.20) size */ +#define PKT_SZ_API1 64 /* API 1 size: extra fields */ + +#define ISODESC_MAX 128 /* Same number as usbfs allows, 2048 bytes. */ + /* max number of USB bus supported */ #define MON_BIN_MAX_MINOR 128 @@ -360,12 +390,8 @@ static inline char mon_bin_get_setup(unsigned char *setupb, const struct urb *urb, char ev_type) { - if (!usb_endpoint_xfer_control(&urb->ep->desc) || ev_type != 'S') - return '-'; - if (urb->setup_packet == NULL) return 'Z'; - memcpy(setupb, urb->setup_packet, SETUP_LEN); return 0; } @@ -387,6 +413,26 @@ static char mon_bin_get_data(const struct mon_reader_bin *rp, return 0; } +static void mon_bin_get_isodesc(const struct mon_reader_bin *rp, + unsigned int offset, struct urb *urb, char ev_type, unsigned int ndesc) +{ + struct mon_bin_isodesc *dp; + struct usb_iso_packet_descriptor *fp; + + fp = urb->iso_frame_desc; + while (ndesc-- != 0) { + dp = (struct mon_bin_isodesc *) + (rp->b_vec[offset / CHUNK_SIZE].ptr + offset % CHUNK_SIZE); + dp->iso_status = fp->status; + dp->iso_off = fp->offset; + dp->iso_len = (ev_type == 'S') ? fp->length : fp->actual_length; + dp->_pad = 0; + if ((offset += sizeof(struct mon_bin_isodesc)) >= rp->b_size) + offset = 0; + fp++; + } +} + static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, char ev_type, int status) { @@ -396,6 +442,7 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, unsigned int urb_length; unsigned int offset; unsigned int length; + unsigned int ndesc, lendesc; unsigned char dir; struct mon_bin_hdr *ep; char data_tag = 0; @@ -407,6 +454,19 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, /* * Find the maximum allowable length, then allocate space. */ + if (usb_endpoint_xfer_isoc(epd)) { + if (urb->number_of_packets < 0) { + ndesc = 0; + } else if (urb->number_of_packets >= ISODESC_MAX) { + ndesc = ISODESC_MAX; + } else { + ndesc = urb->number_of_packets; + } + } else { + ndesc = 0; + } + lendesc = ndesc*sizeof(struct mon_bin_isodesc); + urb_length = (ev_type == 'S') ? urb->transfer_buffer_length : urb->actual_length; length = urb_length; @@ -429,10 +489,12 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, dir = 0; } - if (rp->mmap_active) - offset = mon_buff_area_alloc_contiguous(rp, length + PKT_SIZE); - else - offset = mon_buff_area_alloc(rp, length + PKT_SIZE); + if (rp->mmap_active) { + offset = mon_buff_area_alloc_contiguous(rp, + length + PKT_SIZE + lendesc); + } else { + offset = mon_buff_area_alloc(rp, length + PKT_SIZE + lendesc); + } if (offset == ~0) { rp->cnt_lost++; spin_unlock_irqrestore(&rp->b_lock, flags); @@ -456,9 +518,31 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, ep->ts_usec = ts.tv_usec; ep->status = status; ep->len_urb = urb_length; - ep->len_cap = length; + ep->len_cap = length + lendesc; + ep->xfer_flags = urb->transfer_flags; + + if (usb_endpoint_xfer_int(epd)) { + ep->interval = urb->interval; + } else if (usb_endpoint_xfer_isoc(epd)) { + ep->interval = urb->interval; + ep->start_frame = urb->start_frame; + ep->s.iso.error_count = urb->error_count; + ep->s.iso.numdesc = urb->number_of_packets; + } + + if (usb_endpoint_xfer_control(epd) && ev_type == 'S') { + ep->flag_setup = mon_bin_get_setup(ep->s.setup, urb, ev_type); + } else { + ep->flag_setup = '-'; + } + + if (ndesc != 0) { + ep->ndesc = ndesc; + mon_bin_get_isodesc(rp, offset, urb, ev_type, ndesc); + if ((offset += lendesc) >= rp->b_size) + offset -= rp->b_size; + } - ep->flag_setup = mon_bin_get_setup(ep->setup, urb, ev_type); if (length != 0) { ep->flag_data = mon_bin_get_data(rp, offset, urb, length); if (ep->flag_data != 0) { /* Yes, it's 0x00, not '0' */ @@ -592,7 +676,8 @@ err_alloc: * Returns zero or error. */ static int mon_bin_get_event(struct file *file, struct mon_reader_bin *rp, - struct mon_bin_hdr __user *hdr, void __user *data, unsigned int nbytes) + struct mon_bin_hdr __user *hdr, unsigned int hdrbytes, + void __user *data, unsigned int nbytes) { unsigned long flags; struct mon_bin_hdr *ep; @@ -609,7 +694,7 @@ static int mon_bin_get_event(struct file *file, struct mon_reader_bin *rp, ep = MON_OFF2HDR(rp, rp->b_out); - if (copy_to_user(hdr, ep, sizeof(struct mon_bin_hdr))) { + if (copy_to_user(hdr, ep, hdrbytes)) { mutex_unlock(&rp->fetch_lock); return -EFAULT; } @@ -657,6 +742,7 @@ static ssize_t mon_bin_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { struct mon_reader_bin *rp = file->private_data; + unsigned int hdrbytes = PKT_SZ_API0; unsigned long flags; struct mon_bin_hdr *ep; unsigned int offset; @@ -674,8 +760,8 @@ static ssize_t mon_bin_read(struct file *file, char __user *buf, ep = MON_OFF2HDR(rp, rp->b_out); - if (rp->b_read < sizeof(struct mon_bin_hdr)) { - step_len = min(nbytes, sizeof(struct mon_bin_hdr) - rp->b_read); + if (rp->b_read < hdrbytes) { + step_len = min(nbytes, (size_t)(hdrbytes - rp->b_read)); ptr = ((char *)ep) + rp->b_read; if (step_len && copy_to_user(buf, ptr, step_len)) { mutex_unlock(&rp->fetch_lock); @@ -687,13 +773,13 @@ static ssize_t mon_bin_read(struct file *file, char __user *buf, done += step_len; } - if (rp->b_read >= sizeof(struct mon_bin_hdr)) { + if (rp->b_read >= hdrbytes) { step_len = ep->len_cap; - step_len -= rp->b_read - sizeof(struct mon_bin_hdr); + step_len -= rp->b_read - hdrbytes; if (step_len > nbytes) step_len = nbytes; offset = rp->b_out + PKT_SIZE; - offset += rp->b_read - sizeof(struct mon_bin_hdr); + offset += rp->b_read - hdrbytes; if (offset >= rp->b_size) offset -= rp->b_size; if (copy_from_buf(rp, offset, buf, step_len)) { @@ -709,7 +795,7 @@ static ssize_t mon_bin_read(struct file *file, char __user *buf, /* * Check if whole packet was read, and if so, jump to the next one. */ - if (rp->b_read >= sizeof(struct mon_bin_hdr) + ep->len_cap) { + if (rp->b_read >= hdrbytes + ep->len_cap) { spin_lock_irqsave(&rp->b_lock, flags); mon_buff_area_free(rp, PKT_SIZE + ep->len_cap); spin_unlock_irqrestore(&rp->b_lock, flags); @@ -908,6 +994,7 @@ static int mon_bin_ioctl(struct inode *inode, struct file *file, break; case MON_IOCX_GET: + case MON_IOCX_GETX: { struct mon_bin_get getb; @@ -917,8 +1004,9 @@ static int mon_bin_ioctl(struct inode *inode, struct file *file, if (getb.alloc > 0x10000000) /* Want to cast to u32 */ return -EINVAL; - ret = mon_bin_get_event(file, rp, - getb.hdr, getb.data, (unsigned int)getb.alloc); + ret = mon_bin_get_event(file, rp, getb.hdr, + (cmd == MON_IOCX_GET)? PKT_SZ_API0: PKT_SZ_API1, + getb.data, (unsigned int)getb.alloc); } break; @@ -984,16 +1072,18 @@ static long mon_bin_compat_ioctl(struct file *file, switch (cmd) { - case MON_IOCX_GET32: { + case MON_IOCX_GET32: + case MON_IOCX_GETX32: + { struct mon_bin_get32 getb; if (copy_from_user(&getb, (void __user *)arg, sizeof(struct mon_bin_get32))) return -EFAULT; - ret = mon_bin_get_event(file, rp, - compat_ptr(getb.hdr32), compat_ptr(getb.data32), - getb.alloc32); + ret = mon_bin_get_event(file, rp, compat_ptr(getb.hdr32), + (cmd == MON_IOCX_GET32)? PKT_SZ_API0: PKT_SZ_API1, + compat_ptr(getb.data32), getb.alloc32); if (ret < 0) return ret; } |