mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-04-06 11:28:23 -04:00
e435a6b531
Currently, there are two ways for PF to set the unicast MAC address space size: specified by config parameters in firmware or set to default value. That's mean if the config parameters in firmware is zero, driver will divide the whole unicast MAC address space equally to 8 PFs. However, in this case, the unicast MAC address space will be wasted a lot when the hardware actually has less then 8 PFs. And in the other hand, if one PF has much more VFs than other PFs, then each function of this PF will has much less address space than other PFs. In order to ameliorate the above two situations, introduce the third way of unicast MAC address space assignment: firmware divides the whole unicast MAC address space equally to functions of all PFs, and calculates the space size of each PF according to its function number. PF queries the space size by the querying device specification command when in initialization process. The third way assignment is lower priority than specified by config parameters, only if the config parameters is zero can be used, and if firmware does not support the third way assignment, then driver still divides the whole unicast MAC address space equally to 8 PFs. Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.