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What: /sys/kernel/config/most_<component>
Date: March 8, 2019
KernelVersion: 5.2
Description: Interface is used to configure and connect device channels
to component drivers.
Attributes are visible only when configfs is mounted. To mount
configfs in /sys/kernel/config directory use:
# mount -t configfs none /sys/kernel/config/
What: /sys/kernel/config/most_cdev/<link>
Date: March 8, 2019
KernelVersion: 5.2
Description:
The attributes:
buffer_size configure the buffer size for this channel
subbuffer_size configure the sub-buffer size for this channel
(needed for synchronous and isochrnous data)
num_buffers configure number of buffers used for this
channel
datatype configure type of data that will travel over
this channel
direction configure whether this link will be an input
or output
dbr_size configure DBR data buffer size (this is used
for MediaLB communiction only)
packets_per_xact
configure the number of packets that will be
collected from the network before being
transmitted via USB (this is used for USB
communiction only)
device name of the device the link is to be attached to
channel name of the channel the link is to be attached to
comp_params pass parameters needed by some components
create_link write '1' to this attribute to trigger the
creation of the link. In case of speculative
configuration, the creation is post-poned until
a physical device is being attached to the bus.
destroy_link write '1' to this attribute to destroy an
active link
What: /sys/kernel/config/most_video/<link>
Date: March 8, 2019
KernelVersion: 5.2
Description:
The attributes:
buffer_size configure the buffer size for this channel
subbuffer_size configure the sub-buffer size for this channel
(needed for synchronous and isochrnous data)
num_buffers configure number of buffers used for this
channel
datatype configure type of data that will travel over
this channel
direction configure whether this link will be an input
or output
dbr_size configure DBR data buffer size (this is used
for MediaLB communiction only)
packets_per_xact
configure the number of packets that will be
collected from the network before being
transmitted via USB (this is used for USB
communiction only)
device name of the device the link is to be attached to
channel name of the channel the link is to be attached to
comp_params pass parameters needed by some components
create_link write '1' to this attribute to trigger the
creation of the link. In case of speculative
configuration, the creation is post-poned until
a physical device is being attached to the bus.
destroy_link write '1' to this attribute to destroy an
active link
What: /sys/kernel/config/most_net/<link>
Date: March 8, 2019
KernelVersion: 5.2
Description:
The attributes:
buffer_size configure the buffer size for this channel
subbuffer_size configure the sub-buffer size for this channel
(needed for synchronous and isochrnous data)
num_buffers configure number of buffers used for this
channel
datatype configure type of data that will travel over
this channel
direction configure whether this link will be an input
or output
dbr_size configure DBR data buffer size (this is used
for MediaLB communiction only)
packets_per_xact
configure the number of packets that will be
collected from the network before being
transmitted via USB (this is used for USB
communiction only)
device name of the device the link is to be attached to
channel name of the channel the link is to be attached to
comp_params pass parameters needed by some components
create_link write '1' to this attribute to trigger the
creation of the link. In case of speculative
configuration, the creation is post-poned until
a physical device is being attached to the bus.
destroy_link write '1' to this attribute to destroy an
active link
What: /sys/kernel/config/most_sound/<card>
Date: March 8, 2019
KernelVersion: 5.2
Description:
The attributes:
create_card write '1' to this attribute to trigger the
registration of the sound card with the ALSA
subsystem.
What: /sys/kernel/config/most_sound/<card>/<link>
Date: March 8, 2019
KernelVersion: 5.2
Description:
The attributes:
buffer_size configure the buffer size for this channel
subbuffer_size configure the sub-buffer size for this channel
(needed for synchronous and isochrnous data)
num_buffers configure number of buffers used for this
channel
datatype configure type of data that will travel over
this channel
direction configure whether this link will be an input
or output
dbr_size configure DBR data buffer size (this is used
for MediaLB communiction only)
packets_per_xact
configure the number of packets that will be
collected from the network before being
transmitted via USB (this is used for USB
communiction only)
device name of the device the link is to be attached to
channel name of the channel the link is to be attached to
comp_params pass parameters needed by some components
create_link write '1' to this attribute to trigger the
creation of the link. In case of speculative
configuration, the creation is post-poned until
a physical device is being attached to the bus.
destroy_link write '1' to this attribute to destroy an
active link
What: /sys/kernel/config/rdma_cm/<hca>/ports/<port-num>/default_roce_tos
Date: March 8, 2019
KernelVersion: 5.2
Description: RDMA-CM QPs from HCA <hca> at port <port-num>
will be created with this TOS as default.
This can be overridden by using the rdma_set_option API.
The possible RoCE TOS values are 0-255.
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