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This IOCTL is used to associate the current file descriptor with a FW Client (given by UUID), and virtual tag (vtag). The IOCTL opens a communication channel between a host client and a FW client on a tagged channel. From this point on, every reader and write will communicate with the associated FW client on the tagged channel. Upon close() the communication is terminated. The IOCTL argument is a struct with a union that contains the input parameter and the output parameter for this IOCTL. The input parameter is UUID of the FW Client, a vtag [0,255] The output parameter is the properties of the FW client Clients that do not support tagged connection will respond with -EOPNOTSUPP Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200818115147.2567012-12-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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