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mlxsw: spectrum: Use only one function to create vFIDs 

Simplify the code and use only one function for vFID creation /
destruction.

Unlike before, the function receives a FID index as its argument and not
a vFID index. Instead of passing 0, now one would need to pass 4K, which
is the first vFID.

This is the first step in creating a generic FID struct that will be
used for all three types of FIDs.

Signed-off-by: Ido Schimmel <idosch@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 2016-06-20 23:04:09 +02:00 committed by David S. Miller
parent 47a0a9e6c3
commit c7e920b5be
1 changed files with 37 additions and 42 deletions
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79
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -652,68 +652,61 @@ static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
MLXSW_SP_VFID_PORT_MAX);
}
static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
{
u16 fid = mlxsw_sp_vfid_to_fid(vfid);
char sfmr_pl[MLXSW_REG_SFMR_LEN];
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}
static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
{
u16 fid = mlxsw_sp_vfid_to_fid(vfid);
char sfmr_pl[MLXSW_REG_SFMR_LEN];
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}
static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
u16 vid)
{
struct device *dev = mlxsw_sp->bus_info->dev;
struct mlxsw_sp_vfid *vfid;
u16 n_vfid;
struct mlxsw_sp_vfid *f;
u16 vfid, fid;
int err;
n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
if (vfid == MLXSW_SP_VFID_PORT_MAX) {
dev_err(dev, "No available vFIDs\n");
return ERR_PTR(-ERANGE);
}
err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
fid = mlxsw_sp_vfid_to_fid(vfid);
err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
if (err) {
dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
dev_err(dev, "Failed to create FID=%d\n", fid);
return ERR_PTR(err);
}
vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
if (!vfid)
f = kzalloc(sizeof(*f), GFP_KERNEL);
if (!f)
goto err_allocate_vfid;
vfid->vfid = n_vfid;
vfid->vid = vid;
f->vfid = vfid;
f->vid = vid;
list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
list_add(&f->list, &mlxsw_sp->port_vfids.list);
set_bit(vfid, mlxsw_sp->port_vfids.mapped);
return vfid;
return f;
err_allocate_vfid:
__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
return ERR_PTR(-ENOMEM);
}
static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_vfid *vfid)
{
u16 fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
list_del(&vfid->list);
__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
kfree(vfid);
}
@ -3164,36 +3157,37 @@ static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
struct net_device *br_dev)
{
struct device *dev = mlxsw_sp->bus_info->dev;
struct mlxsw_sp_vfid *vfid;
u16 n_vfid;
struct mlxsw_sp_vfid *f;
u16 vfid, fid;
int err;
n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
if (n_vfid == MLXSW_SP_VFID_MAX) {
vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
if (vfid == MLXSW_SP_VFID_MAX) {
dev_err(dev, "No available vFIDs\n");
return ERR_PTR(-ERANGE);
}
err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
fid = mlxsw_sp_vfid_to_fid(vfid);
err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
if (err) {
dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
dev_err(dev, "Failed to create FID=%d\n", fid);
return ERR_PTR(err);
}
vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
if (!vfid)
f = kzalloc(sizeof(*f), GFP_KERNEL);
if (!f)
goto err_allocate_vfid;
vfid->vfid = n_vfid;
vfid->br_dev = br_dev;
f->vfid = vfid;
f->br_dev = br_dev;
list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
list_add(&f->list, &mlxsw_sp->br_vfids.list);
set_bit(mlxsw_sp_vfid_to_br_vfid(vfid), mlxsw_sp->br_vfids.mapped);
return vfid;
return f;
err_allocate_vfid:
__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
return ERR_PTR(-ENOMEM);
}
@ -3201,11 +3195,12 @@ static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_vfid *vfid)
{
u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
u16 fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
list_del(&vfid->list);
__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
kfree(vfid);
}