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authorIdo Schimmel <idosch@mellanox.com>2017-09-01 11:58:55 +0300
committerDavid S. Miller <davem@davemloft.net>2017-09-01 20:01:36 +0300
commitd3b6d3774fc2b636b12f8ef6367ed294861469ed (patch)
treef84e1c2dd0c703dde5a24693e638c83bb2b043b8 /drivers/net
parent843bd2b38d7f3929e0fa4dd7e8061ba9da7a3961 (diff)
downloadlinux-d3b6d3774fc2b636b12f8ef6367ed294861469ed.tar.xz
mlxsw: spectrum_router: Trap packets hitting anycast routes
I relied on the fact that anycast routes use the loopback device as their nexthop device to trap packets hitting them to the CPU. After commit 4832c30d5458 ("net: ipv6: put host and anycast routes on device with address") this is no longer the case and such routes are programmed with a forward action (note the 'offload' flag): anycast cafe:: dev enp3s0np7 proto kernel metric 0 offload pref medium This will prevent the router from locally receiving packets destined to the Subnet-Router anycast address. Fix this by specifically programming anycast routes with action trap, which results in the following output: anycast cafe:: dev enp3s0np7 proto kernel metric 0 pref medium Fixes: 4832c30d5458 ("net: ipv6: put host and anycast routes on device with address") 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 'drivers/net')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 0cf68102d113..00e3aec2d086 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -3659,7 +3659,7 @@ static void mlxsw_sp_fib6_entry_type_set(struct mlxsw_sp_fib_entry *fib_entry,
* local, which will cause them to be trapped with a lower
* priority than packets that need to be locally received.
*/
- if (rt->rt6i_flags & RTF_LOCAL)
+ if (rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST))
fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
else if (rt->rt6i_flags & RTF_REJECT)
fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL;