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mlxsw: spectrum_router: Abort on source-specific routes 

Without resorting to ACLs, the device performs route lookup solely based
on the destination IP address.

In case source-specific routing is needed, an error is returned and the
abort mechanism is activated, thus allowing the kernel to take over
forwarding decisions.

Instead of aborting, we can trap specific destination prefixes where
source-specific routes are present, but this will result in a lot more
code that is unlikely to ever be used.

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>
This commit is contained in:
Ido Schimmel 2017-08-03 13:28:30 +02:00 committed by David S. Miller
parent 0a7fd1ac2a
commit f36f5ac677
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -3528,6 +3528,9 @@ static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp,
if (mlxsw_sp->router->aborted)
return 0;
if (rt->rt6i_src.plen)
return -EINVAL;
if (mlxsw_sp_fib6_rt_should_ignore(rt))
return 0;