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authorIdo Schimmel <idosch@mellanox.com>2017-02-08 11:16:38 +0100
committerDavid S. Miller <davem@davemloft.net>2017-02-08 15:25:18 -0500
commit70ad35067c99dd6fb1fefbabf11dd53806f1978c (patch)
treea222cc4da216ec11c22ba6152743b84be97b012d /net/ipv4/fib_semantics.c
parentmlxsw: spectrum_router: Determine offload status using generic function (diff)
downloadlinux-dev-70ad35067c99dd6fb1fefbabf11dd53806f1978c.tar.xz
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mlxsw: spectrum_router: Use trap action only for some route types
The device can have one of three actions associated with a route: 1) Remote - packets continue to the adjacency table 2) Local - packets continue to the neighbour table 3) Trap - packets continue to the CPU The first two actions can also trap packets to the CPU, but they do so using a different trap ID, which has a lower traffic class and less allotted bandwidth. We currently use the third action for both RTN_{LOCAL,BROADCAST} routes and RTN_UNICAST routes not pointing to the switch ports. However, packets that merely need to be forwarded by the switch are likely not control packets and can be therefore scheduled towards the CPU using a lower traffic class. Achieve the above by assigning the third action only to local and broadcast routes and have any other route use either of the first two actions, based on whether the route is gatewayed or not. This will also allow us to refresh routes using the local action and have them trap packets when their RIF is no longer valid following a NH_DEL event. One side effect of this patch is that we no longer give special treatment to multipath routes using both switch and non-switch ports towards their nexthops. If at least one of the nexthops can be resolved, then the device will forward the packets instead of trapping them. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_semantics.c')
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