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mlxsw: spectrum_router: Align RIF index allocation with existing code

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The way we usually allocate an index is by letting the allocation
function return an error instead of an invalid index.

Do the same for RIF index.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2017-06-04 16:53:40 +02:00 committed by David S. Miller
parent da0abcf93f
commit de5ed99e97
1 changed files with 12 additions and 12 deletions
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24
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -2979,16 +2979,18 @@ mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp,
return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type);
}
#define MLXSW_SP_INVALID_INDEX_RIF 0xffff
static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp)
static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index)
{
int i;
for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++)
if (!mlxsw_sp->router->rifs[i])
return i;
for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) {
if (!mlxsw_sp->router->rifs[i]) {
*p_rif_index = i;
return 0;
}
}
return MLXSW_SP_INVALID_INDEX_RIF;
return -ENOBUFS;
}
static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index,
@ -3048,11 +3050,9 @@ mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp,
if (IS_ERR(vr))
return ERR_CAST(vr);
rif_index = mlxsw_sp_avail_rif_get(mlxsw_sp);
if (rif_index == MLXSW_SP_INVALID_INDEX_RIF) {
err = -ERANGE;
goto err_avail_rif_get;
}
err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index);
if (err)
goto err_rif_index_alloc;
rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, params->dev);
if (!rif) {
@ -3095,7 +3095,7 @@ mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp,
err_fid_get:
kfree(rif);
err_rif_alloc:
err_avail_rif_get:
err_rif_index_alloc:
mlxsw_sp_vr_put(vr);
return ERR_PTR(err);
}