7434ed6102
A previous patch added support for init() and fini() for MDB entries. MDB entry can be updated, ports can be added and removed from the entry. Add get() and put() functions, the first one checks if the entry already exists and otherwise initializes the entry. The second removes the entry just in case that there are no more ports in this entry. Use the list of the ports which was added in a previous patch. When the list contains only one port which is not multicast router, and this port is removed, the MDB entry can be removed. Use 'struct mlxsw_sp_mdb_entry.ports_count' to know how many ports use the entry, regardless the use of multicast router ports. When mlxsw_sp_mc_mdb_entry_put() is called with specific port which supposed to be removed, check if the removal will cause a deletion of the entry. If this is the case, call mlxsw_sp_mc_mdb_entry_fini() which first deletes the MDB entry and then releases the PGT entry, to avoid a temporary situation in which the MDB entry points to an empty PGT entry, as otherwise packets will be temporarily dropped instead of being flooded. The new functions will be used in the next patches. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.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.