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mlxsw: spectrum_span: Put buffsize update code into helper function 

Avoid duplication of code that is doing buffsize update and put it into
a separate helper function.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2020-01-20 09:52:51 +02:00 committed by David S. Miller
parent ac9cc4e250
commit 31c25b9498
1 changed files with 16 additions and 23 deletions
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39
drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
View File

@ -754,26 +754,25 @@ static int mlxsw_sp_span_mtu_to_buffsize(const struct mlxsw_sp *mlxsw_sp,
return mlxsw_sp_bytes_cells(mlxsw_sp, mtu * 5 / 2) + 1;
}
static int
mlxsw_sp_span_port_buffsize_update(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sbib_pl[MLXSW_REG_SBIB_LEN];
u32 buffsize;
buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp, mtu);
mlxsw_reg_sbib_pack(sbib_pl, mlxsw_sp_port->local_port, buffsize);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
}
int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
{
struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
char sbib_pl[MLXSW_REG_SBIB_LEN];
int err;
/* If port is egress mirrored, the shared buffer size should be
* updated according to the mtu value
*/
if (mlxsw_sp_span_is_egress_mirror(port)) {
u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp, mtu);
mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
if (err) {
netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
return err;
}
}
if (mlxsw_sp_span_is_egress_mirror(port))
return mlxsw_sp_span_port_buffsize_update(port, mtu);
return 0;
}
@ -836,15 +835,9 @@ mlxsw_sp_span_inspected_port_add(struct mlxsw_sp_port *port,
/* if it is an egress SPAN, bind a shared buffer to it */
if (type == MLXSW_SP_SPAN_EGRESS) {
u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp,
port->dev->mtu);
mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
if (err) {
netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
err = mlxsw_sp_span_port_buffsize_update(port, port->dev->mtu);
if (err)
return err;
}
}
if (bind) {