diff options
Diffstat (limited to 'usb-redirection-protocol.txt')
| -rw-r--r-- | usb-redirection-protocol.txt | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/usb-redirection-protocol.txt b/usb-redirection-protocol.txt index 9d9c4c6..226e32a 100644 --- a/usb-redirection-protocol.txt +++ b/usb-redirection-protocol.txt @@ -71,9 +71,14 @@ Version 0.4.2, released 6 March 2012 Version 0.5, released 7 September 2012 - Add the posibility to use 64 bits packet ids +Version 0.5.3, released 7 October 2012 +- Extend the length field in bulk packets headers to 32 bits, the extra 16 + bits are only send / received if both sides have the + usb_redir_cap_32bits_bulk_length capability -USB redirerection protocol version 0.5 --------------------------------------- + +USB redirerection protocol version 0.5.3 +---------------------------------------- The protocol described in this document is meant for tunneling usb transfers to a single usb device. Note: not an entire hub, only a single device. @@ -248,6 +253,8 @@ enum { usb_redir_cap_ep_info_max_packet_size, /* Supports 64 bits ids in usb_redir_header */ usb_redir_cap_64bits_ids, + /* Supports 32 bits length in usb_redir_bulk_packet_header */ + usb_redir_cap_32bits_bulk_length, }; usb_redir_device_connect @@ -796,6 +803,7 @@ struct usb_redir_bulk_packet_header { uint8_t status; uint16_t length; uint32_t stream_id; + uint16_t length_high; /* High 16 bits of the packet length */ } The additional data contains the bulk msg data to be send / received. @@ -806,6 +814,10 @@ their standard meaning for usb bulk messages. The status field is only used in the usb-host's response. length is the amount of data the usb-guest is sending / expects to read (depending on the direction of the endpoint). +length_high contains the 16 high bits of length to allow packets larger +then 65535 bytes, it is only send/received if both sides have the +usb_redir_cap_32bits_bulk_length capability. + When the bulk msg has been processed by the usb-device the usb-host sends a usb_redir_bulk_packet back to the usb-guest, with the status field and length updated to match the actual results. |