nfp: flower vxlan neighbour keep-alive

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Periodically receive messages containing the destination IPs of tunnels
that have recently forwarded traffic. Update the neighbour entries 'used'
value for these IPs next hop.

This prevents the neighbour entry from expiring on timeout but rather
signals an ARP to verify the connection. From an NFP perspective, packets
will not fall back mid-flow unless the link is verified to be down.

Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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John Hurley 2017-09-25 12:23:41 +02:00 • committed by David S. Miller

parent 8e6a9046b6

commit 856f5b1357

4 changed files with 69 additions and 0 deletions

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3

drivers/net/ethernet/netronome/nfp/flower/cmsg.c

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1

drivers/net/ethernet/netronome/nfp/flower/cmsg.h

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1

drivers/net/ethernet/netronome/nfp/flower/main.h

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64

drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c

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