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In the router, some next hops may reference an encapsulating netdevice, such as GRE or IPIP. To properly offload these next hops, mlxsw needs to keep track of whether a given next hop is a regular Ethernet entry, or an IP-in-IP tunneling entry. To facilitate this book-keeping, add a type field to struct mlxsw_sp_nexthop. There is, as of this patch, only one next hop type: MLXSW_SP_NEXTHOP_TYPE_ETH. Follow-up patches will introduce the IP-in-IP variant. There are several places where next hops are initialized in the IPv4 path. Instead of replicating the logic at every one of them, factor it out to a function mlxsw_sp_nexthop4_type_init(). The corresponding fini is actually protocol-neutral, so put it to mlxsw_sp_nexthop_type_fini(), but create a corresponding protocoled _fini function that dispatches to the protocol-neutral one. The IPv6 path is simpler, but for symmetry with IPv4, create the same suite of functions with corresponding logic. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.