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Merge branch 'mlxsw-Support-for-IPv6-UC-router'
Jiri Pirko says: ==================== mlxsw: Support for IPv6 UC router Ido says: This set adds support for IPv6 unicast routes offload. The first four patches make the FIB notification chain generic so that it could be used by address families other than IPv4. This is done by having each address family register its callbacks with the common code, so that its FIB tables and rules could be dumped upon registration to the chain, while ensuring the integrity of the dump. The exact mechanics are explained in detail in the first patch. The next six patches build upon this work and add the necessary callbacks in IPv6 code. This allows listeners of the chain to receive notifications about IPv6 routes addition, deletion and replacement as well as FIB rules notifications. Unlike user space notifications for IPv6 multipath routes, the FIB notification chain notifies these on a per-nexthop basis. This allows us to keep the common code lean and is also unnecessary, as notifications are serialized by each table's lock whereas applications maintaining netlink caches may suffer from concurrent dumps and deletions / additions of routes. The next five patches audit the different code paths reading the route's reference count (rt6i_ref) and remove assumptions regarding its meaning. This is needed since non-FIB users need to be able to hold a reference on the route and a non-zero reference count no longer means the route is in the FIB. The last six patches enable the mlxsw driver to offload IPv6 unicast routes to the Spectrum ASIC. Without resorting to ACLs, lookup is done solely based on the destination IP, so the abort mechanism is invoked upon the addition of source-specific routes. Follow-up patch sets will increase the scale of gatewayed routes by consolidating identical nexthop groups to one adjacency entry in the device's adjacency table (as in IPv4), as well as add support for NH_{ADD,DEL} events which enable support for the 'ignore_routes_with_linkdown' sysctl. Changes in v2: * Provide offload indication for individual nexthops (David Ahern). * Use existing route reference count instead of adding another one. This resulted in several new patches to remove assumptions regarding current semantics of the existing reference count (David Ahern). * Add helpers to allow non-FIB users to take a reference on route. * Remove use of tb6_lock in mlxsw (David Ahern). * Add IPv6 dependency to mlxsw. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2 parents 80cf0b4 + 65e65ec commit 84b7187

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‎drivers/net/ethernet/mellanox/mlxsw/Kconfig

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@@ -75,6 +75,7 @@ config MLXSW_SPECTRUM
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depends on MLXSW_CORE && MLXSW_PCI && NET_SWITCHDEV && VLAN_8021Q
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depends on PSAMPLE || PSAMPLE=n
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depends on BRIDGE || BRIDGE=n
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depends on IPV6 || IPV6=n
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select PARMAN
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select MLXFW
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default m

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