netdev - [PATCH net-next 08/11] mlxsw: spectrum_router: Track NH ID's of group members

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Message-ID: <184ceb6b154e08f5bcf116a705b0fcb01c31895c.1709901020.git.petrm@nvidia.com>
Date: Fri, 8 Mar 2024 13:59:52 +0100
From: Petr Machata <petrm@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, <netdev@...r.kernel.org>
CC: Ido Schimmel <idosch@...dia.com>, Petr Machata <petrm@...dia.com>, "David
 Ahern" <dsahern@...nel.org>, Shuah Khan <shuah@...nel.org>,
	<mlxsw@...dia.com>
Subject: [PATCH net-next 08/11] mlxsw: spectrum_router: Track NH ID's of group members

The core interfaces for collecting per-NH statistics are built around
nexthops even for resilient groups. Because mlxsw models each bucket as a
nexthop, the core next hop that a given bucket contributes to needs to be
looked up. In order to be able to match the two up, we need to track
nexthop ID for members of group nexthop objects. For simplicity, do it for
all nexthop objects, not just group members.

Signed-off-by: Petr Machata <petrm@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 73a16c328252..922dcd9c0b5a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -3083,6 +3083,7 @@ struct mlxsw_sp_nexthop {
 		struct mlxsw_sp_ipip_entry *ipip_entry;
 	};
 	struct mlxsw_sp_nexthop_counter *counter;
+	u32 id;		/* NH ID for members of a NH object group. */
 };
 
 static struct net_device *
@@ -5054,6 +5055,7 @@ mlxsw_sp_nexthop_obj_init(struct mlxsw_sp *mlxsw_sp,
 	mlxsw_sp_nexthop_counter_enable(mlxsw_sp, nh);
 	list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list);
 	nh->ifindex = dev->ifindex;
+	nh->id = nh_obj->id;
 
 	err = mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, dev);
 	if (err)
-- 
2.43.0