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path: root/drivers/ieee1394/iso.h
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Diffstat (limited to 'drivers/ieee1394/iso.h')
-rw-r--r--drivers/ieee1394/iso.h13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/ieee1394/iso.h b/drivers/ieee1394/iso.h
index fb654d9639a..3efc60b33a8 100644
--- a/drivers/ieee1394/iso.h
+++ b/drivers/ieee1394/iso.h
@@ -47,6 +47,14 @@ struct hpsb_iso_packet_info {
/* 2-bit 'tag' and 4-bit 'sy' fields of the isochronous header */
__u8 tag;
__u8 sy;
+
+ /*
+ * length in bytes of the packet including header/trailer.
+ * MUST be at structure end, since the first part of this structure is also
+ * defined in raw1394.h (i.e. struct raw1394_iso_packet_info), is copied to
+ * userspace and is accessed there through libraw1394.
+ */
+ __u16 total_len;
};
enum hpsb_iso_type { HPSB_ISO_RECV = 0, HPSB_ISO_XMIT = 1 };
@@ -111,6 +119,9 @@ struct hpsb_iso {
/* how many times the buffer has overflowed or underflowed */
atomic_t overflows;
+ /* Current number of bytes lost in discarded packets */
+ int bytes_discarded;
+
/* private flags to track initialization progress */
#define HPSB_ISO_DRIVER_INIT (1<<0)
#define HPSB_ISO_DRIVER_STARTED (1<<1)
@@ -193,7 +204,7 @@ void hpsb_iso_packet_sent(struct hpsb_iso *iso, int cycle, int error);
/* call after a packet has been received (interrupt context OK) */
void hpsb_iso_packet_received(struct hpsb_iso *iso, u32 offset, u16 len,
- u16 cycle, u8 channel, u8 tag, u8 sy);
+ u16 total_len, u16 cycle, u8 channel, u8 tag, u8 sy);
/* call to wake waiting processes after buffer space has opened up. */
void hpsb_iso_wake(struct hpsb_iso *iso);