diff options
author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-03-10 16:02:21 -0400 |
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committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-03-24 15:56:50 -0400 |
commit | 18e9b10fcdc090d3a38606958167d5923c7099b7 (patch) | |
tree | fd83055d908e8786afc9b3fbc791b57b2ba10c33 /include | |
parent | 664d8010b170ae8b3ce9268b4f4da934d27b0491 (diff) |
firewire: cdev: add closure to async stream ioctl
This changes the as yet unreleased FW_CDEV_IOC_SEND_STREAM_PACKET ioctl
to generate an fw_cdev_event_response event just like the other two
ioctls for asynchronous request transmission do. This way, clients get
feedback on successful or unsuccessful transmission.
This also adds input validation for length, tag, channel, sy, speed.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/firewire-cdev.h | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 25bc82726ef7..c6b3ca3af6df 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h | |||
@@ -606,28 +606,29 @@ struct fw_cdev_allocate_iso_resource { | |||
606 | 606 | ||
607 | /** | 607 | /** |
608 | * struct fw_cdev_send_stream_packet - send an asynchronous stream packet | 608 | * struct fw_cdev_send_stream_packet - send an asynchronous stream packet |
609 | * @generation: Bus generation where the packet is valid | 609 | * @length: Length of outgoing payload, in bytes |
610 | * @speed: Speed code to send the packet at | 610 | * @tag: Data format tag |
611 | * @channel: Channel to send the packet on | 611 | * @channel: Isochronous channel to transmit to |
612 | * @sy: Four-bit sy code for the packet | 612 | * @sy: Synchronization code |
613 | * @tag: Two-bit tag field to use for the packet | 613 | * @closure: Passed back to userspace in the response event |
614 | * @size: Size of the packet's data payload | 614 | * @data: Userspace pointer to payload |
615 | * @data: Userspace pointer to the payload | 615 | * @generation: The bus generation where packet is valid |
616 | * @speed: Speed to transmit at | ||
616 | * | 617 | * |
617 | * The %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl sends an asynchronous stream packet | 618 | * The %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl sends an asynchronous stream packet |
618 | * to every device (that is listening to the specified channel) on the | 619 | * to every device which is listening to the specified channel. The kernel |
619 | * firewire bus. It is the applications's job to ensure | 620 | * writes an &fw_cdev_event_response event which indicates success or failure of |
620 | * that the intended device(s) will be able to receive the packet at the chosen | 621 | * the transmission. |
621 | * transmit speed. | ||
622 | */ | 622 | */ |
623 | struct fw_cdev_send_stream_packet { | 623 | struct fw_cdev_send_stream_packet { |
624 | __u32 generation; | 624 | __u32 length; |
625 | __u32 speed; | 625 | __u32 tag; |
626 | __u32 channel; | 626 | __u32 channel; |
627 | __u32 sy; | 627 | __u32 sy; |
628 | __u32 tag; | 628 | __u64 closure; |
629 | __u32 size; | ||
630 | __u64 data; | 629 | __u64 data; |
630 | __u32 generation; | ||
631 | __u32 speed; | ||
631 | }; | 632 | }; |
632 | 633 | ||
633 | #endif /* _LINUX_FIREWIRE_CDEV_H */ | 634 | #endif /* _LINUX_FIREWIRE_CDEV_H */ |