From 78126cfd5dc97da7baf66415374452e3f8805faf Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 22 Jun 2023 15:33:05 +0200 Subject: [PATCH] mlxsw: spectrum_router: Maintain CRIF for fallback loopback RIF CRIFs are generally not maintained for loopback RIFs. However, the RIF for the default VRF is used for offloading of blackhole nexthops. Nexthops expect to have a valid CRIF. Therefore in this patch, add code to maintain CRIF for the loopback RIF as well. Signed-off-by: Petr Machata Reviewed-by: Danielle Ratson Link: https://lore.kernel.org/r/7f2b2fcc98770167ed1254a904c3f7f585ba43f0.1687438411.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- .../net/ethernet/mellanox/mlxsw/spectrum_router.c | 12 +++++++++++- .../net/ethernet/mellanox/mlxsw/spectrum_router.h | 1 + 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index d251a926d140..c4d538e0169e 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -10731,9 +10731,14 @@ static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) static int mlxsw_sp_lb_rif_init(struct mlxsw_sp *mlxsw_sp, struct netlink_ext_ack *extack) { + struct mlxsw_sp_router *router = mlxsw_sp->router; struct mlxsw_sp_rif *lb_rif; int err; + router->lb_crif = mlxsw_sp_crif_alloc(NULL); + if (IS_ERR(router->lb_crif)) + return PTR_ERR(router->lb_crif); + /* Create a generic loopback RIF associated with the main table * (default VRF). Any table can be used, but the main table exists * anyway, so we do not waste resources. @@ -10741,17 +10746,22 @@ static int mlxsw_sp_lb_rif_init(struct mlxsw_sp *mlxsw_sp, lb_rif = mlxsw_sp_ul_rif_get(mlxsw_sp, RT_TABLE_MAIN, extack); if (IS_ERR(lb_rif)) { err = PTR_ERR(lb_rif); - return err; + goto err_ul_rif_get; } mlxsw_sp->router->lb_rif_index = lb_rif->rif_index; return 0; + +err_ul_rif_get: + mlxsw_sp_crif_free(router->lb_crif); + return err; } static void mlxsw_sp_lb_rif_fini(struct mlxsw_sp *mlxsw_sp) { mlxsw_sp_router_ul_rif_put(mlxsw_sp, mlxsw_sp->router->lb_rif_index); + mlxsw_sp_crif_free(mlxsw_sp->router->lb_crif); } static int mlxsw_sp1_router_init(struct mlxsw_sp *mlxsw_sp) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h index b223e80303f5..0909cf229c86 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h @@ -61,6 +61,7 @@ struct mlxsw_sp_router { struct mutex lock; /* Protects shared router resources */ struct mlxsw_sp_fib_entry_op_ctx *ll_op_ctx; u16 lb_rif_index; + struct mlxsw_sp_crif *lb_crif; const struct mlxsw_sp_adj_grp_size_range *adj_grp_size_ranges; size_t adj_grp_size_ranges_count; struct delayed_work nh_grp_activity_dw;