> On Sep 12, 2021, at 8:58 PM, Muneendra Kumar <muneendra.kumar@xxxxxxxxxxxx> wrote: > > From: Muneendra <muneendra.kumar@xxxxxxxxxxxx> > > Update documentation for sysfs node within > /sys/class/fc/fc_udev_device/ > > Signed-off-by: Muneendra <muneendra.kumar@xxxxxxxxxxxx> > --- > Documentation/ABI/testing/sysfs-class-fc | 27 ++++++++++++++++++++++++ > 1 file changed, 27 insertions(+) > create mode 100644 Documentation/ABI/testing/sysfs-class-fc > > diff --git a/Documentation/ABI/testing/sysfs-class-fc b/Documentation/ABI/testing/sysfs-class-fc > new file mode 100644 > index 000000000000..3057a6d3b8cf > --- /dev/null > +++ b/Documentation/ABI/testing/sysfs-class-fc > @@ -0,0 +1,27 @@ > +What: /sys/class/fc/fc_udev_device/appid_store > +Date: Aug 2021 > +Contact: Muneendra Kumar <muneendra.kumar@xxxxxxxxxxxxx> > +Description: > + This interface allows an admin to set an FC application > + identifier in the blkcg associated with a cgroup id. The > + identifier is typically a UUID that is associated with > + an application or logical entity such as a virtual > + machine or container group. The application or logical > + entity utilizes a block device via the cgroup id. > + FC adapter drivers may query the identifier and tag FC > + traffic based on the identifier. FC host and FC fabric > + entities can utilize the application id and FC traffic > + tag to identify traffic sources. > + > + The interface expects a string "<cgroupid>:<appid>" where: > + <cgroupid> is inode of the cgroup in hexadecimal > + <appid> is user provided string upto 128 characters > + in length. > + > + If an appid_store is done for a cgroup id that already > + has an appid set, the new value will override the > + previous value. > + > + If an admin wants to remove an FC application identifier > + from a cgroup, an appid_store should be done with the > + following string: "<cgroupid>:" > -- > 2.26.2 > Looks Good. Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> -- Himanshu Madhani Oracle Linux Engineering
