netdev - [PATCH RFC net-next 05/27] mlxsw: Fail attempts to use routes with nexthop objects

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Message-Id: <20190601033618.27702-6-dsahern@kernel.org>
Date:   Fri, 31 May 2019 20:35:56 -0700
From:   David Ahern <dsahern@...nel.org>
To:     davem@...emloft.net, netdev@...r.kernel.org
Cc:     alexei.starovoitov@...il.com, David Ahern <dsahern@...il.com>
Subject: [PATCH RFC net-next 05/27] mlxsw: Fail attempts to use routes with nexthop objects

From: David Ahern <dsahern@...il.com>

Fail attempts to use nexthop objects with routes until support can be
properly added.

Signed-off-by: David Ahern <dsahern@...il.com>
Reviewed-by: Ido Schimmel <idosch@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 4f781358aef1..23f17ea52061 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -6122,6 +6122,20 @@ static int mlxsw_sp_router_fib_event(struct notifier_block *nb,
 				NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported");
 				return notifier_from_errno(-EINVAL);
 			}
+			if (fen_info->fi->nh) {
+				NL_SET_ERR_MSG_MOD(info->extack, "IPv4 route with nexthop objects is not supported");
+				return notifier_from_errno(-EINVAL);
+			}
+		} else if (info->family == AF_INET6) {
+			struct fib6_entry_notifier_info *fen6_info;
+
+			fen6_info = container_of(info,
+						 struct fib6_entry_notifier_info,
+						 info);
+			if (fen6_info->rt->nh) {
+				NL_SET_ERR_MSG_MOD(info->extack, "IPv6 route with nexthop objects is not supported");
+				return notifier_from_errno(-EINVAL);
+			}
 		}
 		break;
 	}
-- 
2.11.0