From 933a623916a00d83616d653a82329750d94de0f1 Mon Sep 17 00:00:00 2001 From: Vadim Pasternak Date: Sun, 19 Dec 2021 09:40:34 +0000 Subject: [PATCH backport 5.10 156/182] mlxsw: minimal: Add interfaces for line card initialization and de-initialization Add callback functions for line card 'netdevice' objects initialization and de-initialization. Each line card is associated with the set of 'netdevices', which are created/destroyed dynamically, when line card is getting to active / inactive states. Add APIs for line card registration and de-registration during init and de-init. Signed-off-by: Vadim Pasternak --- drivers/net/ethernet/mellanox/mlxsw/minimal.c | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c index 27afb28e439f..0b605c6aa637 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c +++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c @@ -549,6 +549,69 @@ static void mlxsw_m_sys_event_handler(struct mlxsw_core *mlxsw_core) } } +static void +mlxsw_m_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index, + const struct mlxsw_linecard *linecard, void *priv) +{ + struct mlxsw_m *mlxsw_m = priv; + int err; + + err = mlxsw_m_ports_create(mlxsw_m, slot_index); + if (err) { + dev_err(mlxsw_m->bus_info->dev, "Failed to set line card at slot %d\n", + slot_index); + goto mlxsw_m_ports_create_fail; + } + mlxsw_m->line_cards[slot_index]->active = true; + +mlxsw_m_ports_create_fail: + return; +} + +static void +mlxsw_m_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index, + const struct mlxsw_linecard *linecard, void *priv) +{ + struct mlxsw_m *mlxsw_m = priv; + + mlxsw_m_ports_remove(mlxsw_m, slot_index); + mlxsw_m->line_cards[slot_index]->active = false; +} + +static struct mlxsw_linecards_event_ops mlxsw_m_event_ops = { + .got_active = mlxsw_m_got_active, + .got_inactive = mlxsw_m_got_inactive, +}; + +static int mlxsw_m_linecards_register(struct mlxsw_m *mlxsw_m) +{ + struct mlxsw_linecards *linecards = mlxsw_core_linecards(mlxsw_m->core); + + if (!linecards || !linecards->count) + return 0; + + return mlxsw_linecards_event_ops_register(mlxsw_m->core, + &mlxsw_m_event_ops, + mlxsw_m); +} + +static void mlxsw_m_linecards_unregister(struct mlxsw_m *mlxsw_m) +{ + struct mlxsw_linecards *linecards = mlxsw_core_linecards(mlxsw_m->core); + int i; + + if (!linecards || !linecards->count) + return; + + for (i = 1; i <= linecards->count; i++) { + if (mlxsw_m->line_cards[i]->active) + mlxsw_m_got_inactive(mlxsw_m->core, i, NULL, mlxsw_m); + } + + mlxsw_linecards_event_ops_unregister(mlxsw_m->core, + &mlxsw_m_event_ops, mlxsw_m); +} + static int mlxsw_m_init(struct mlxsw_core *mlxsw_core, const struct mlxsw_bus_info *mlxsw_bus_info, struct netlink_ext_ack *extack) @@ -587,8 +650,14 @@ static int mlxsw_m_init(struct mlxsw_core *mlxsw_core, goto err_mlxsw_m_ports_create; } + err = mlxsw_m_linecards_register(mlxsw_m); + if (err) + goto err_linecards_register; + return 0; +err_linecards_register: + mlxsw_m_ports_remove(mlxsw_m, 0); err_mlxsw_m_ports_create: mlxsw_m_line_cards_free(mlxsw_m); return err; @@ -598,6 +667,7 @@ static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core) { struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); + mlxsw_m_linecards_unregister(mlxsw_m); mlxsw_m_ports_remove(mlxsw_m, 0); mlxsw_m_line_cards_free(mlxsw_m); } -- 2.20.1