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mlxsw: spectrum: Introduce support for Data Center Bridging (DCB)

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Introduce basic infrastructure for DCB and add the missing ops in
following patches.

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 2016-04-06 17:10:09 +02:00 committed by David S. Miller
parent 90183b980d
commit f00817df2b
5 changed files with 101 additions and 0 deletions
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8
drivers/net/ethernet/mellanox/mlxsw/Kconfig
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@ -50,3 +50,11 @@ config MLXSW_SPECTRUM
To compile this driver as a module, choose M here: the
module will be called mlxsw_spectrum.
config MLXSW_SPECTRUM_DCB
bool "Data Center Bridging (DCB) support"
depends on MLXSW_SPECTRUM && DCB
default y
---help---
Say Y here if you want to use Data Center Bridging (DCB) in the
driver.

1
drivers/net/ethernet/mellanox/mlxsw/Makefile
View File

@ -8,3 +8,4 @@ mlxsw_switchx2-objs := switchx2.o
obj-$(CONFIG_MLXSW_SPECTRUM) += mlxsw_spectrum.o
mlxsw_spectrum-objs := spectrum.o spectrum_buffers.o \
spectrum_switchdev.o
mlxsw_spectrum-$(CONFIG_MLXSW_SPECTRUM_DCB) += spectrum_dcb.o

10
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -1681,6 +1681,14 @@ static int __mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
goto err_port_ets_init;
}
/* ETS and buffers must be initialized before DCB. */
err = mlxsw_sp_port_dcb_init(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize DCB\n",
mlxsw_sp_port->local_port);
goto err_port_dcb_init;
}
mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
err = register_netdev(dev);
if (err) {
@ -1701,6 +1709,7 @@ static int __mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
err_port_vlan_init:
unregister_netdev(dev);
err_register_netdev:
err_port_dcb_init:
err_port_ets_init:
err_port_buffers_init:
err_port_admin_status_set:
@ -1771,6 +1780,7 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
devlink_port = &mlxsw_sp_port->devlink_port;
devlink_port_type_clear(devlink_port);
unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
devlink_port_unregister(devlink_port);
mlxsw_sp_port_vports_fini(mlxsw_sp_port);
mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);

17
drivers/net/ethernet/mellanox/mlxsw/spectrum.h
View File

@ -270,4 +270,21 @@ int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);
int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid);
#ifdef CONFIG_MLXSW_SPECTRUM_DCB
int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port);
void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port);
#else
static inline int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
return 0;
}
static inline void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{}
#endif
#endif

65
drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c Normal file
View File

@ -0,0 +1,65 @@
/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
* Copyright (c) 2016 Ido Schimmel <idosch@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/netdevice.h>
#include <net/dcbnl.h>
#include "spectrum.h"
static u8 mlxsw_sp_dcbnl_getdcbx(struct net_device __always_unused *dev)
{
return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
}
static u8 mlxsw_sp_dcbnl_setdcbx(struct net_device __always_unused *dev,
u8 mode)
{
return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;
}
static const struct dcbnl_rtnl_ops mlxsw_sp_dcbnl_ops = {
.getdcbx = mlxsw_sp_dcbnl_getdcbx,
.setdcbx = mlxsw_sp_dcbnl_setdcbx,
};
int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port->dev->dcbnl_ops = &mlxsw_sp_dcbnl_ops;
return 0;
}
void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
}