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net/mlx5: E-Switch, Centralize repersentor reg/unreg to eswitch driver

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Eswitch has two users: IB and ETH. They both register repersentors
when mlx5 interface is added, and unregister the repersentors when
mlx5 interface is removed. Ideally, each driver should only deal with
the entities which are unique to itself. However, current IB and ETH
drivers have to perform the following eswitch operations:

1. When registering, specify how many vports to register. This number
   is the same for both drivers which is the total available vport
   numbers.
2. When unregistering, specify the number of registered vports to do
   unregister. Also, unload the repersentors which are already loaded.

It's unnecessary for eswitch driver to hands out the control of above
operations to individual driver users, as they're not unique to each
driver. Instead, such operations should be centralized to eswitch
driver. This consolidates eswitch control flow, and simplified IB and
ETH driver.

This patch doesn't change any functionality.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Bodong Wang
2019-01-31 17:42:57 -06:00
committed by Saeed Mahameed
parent 29d9fd7d5a
commit f8e8fa0262
4 changed files with 43 additions and 60 deletions
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18
drivers/infiniband/hw/mlx5/ib_rep.c
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@@ -95,26 +95,20 @@ static void *mlx5_ib_vport_get_proto_dev(struct mlx5_eswitch_rep *rep)
void mlx5_ib_register_vport_reps(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
int total_vports = MLX5_TOTAL_VPORTS(mdev);
struct mlx5_eswitch_rep_if rep_if = {};
int vport;
for (vport = 0; vport < total_vports; vport++) {
rep_if.load = mlx5_ib_vport_rep_load;
rep_if.unload = mlx5_ib_vport_rep_unload;
rep_if.get_proto_dev = mlx5_ib_vport_get_proto_dev;
mlx5_eswitch_register_vport_rep(esw, vport, &rep_if, REP_IB);
}
rep_if.load = mlx5_ib_vport_rep_load;
rep_if.unload = mlx5_ib_vport_rep_unload;
rep_if.get_proto_dev = mlx5_ib_vport_get_proto_dev;
mlx5_eswitch_register_vport_reps(esw, &rep_if, REP_IB);
}
void mlx5_ib_unregister_vport_reps(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
int total_vports = MLX5_TOTAL_VPORTS(mdev);
int vport;
for (vport = total_vports - 1; vport >= 0; vport--)
mlx5_eswitch_unregister_vport_rep(esw, vport, REP_IB);
mlx5_eswitch_unregister_vport_reps(esw, REP_IB);
}
u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw)