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OpenCloudOS-Kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum.c

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/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum.c
* Copyright (c) 2015-2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2015-2017 Jiri Pirko <jiri@mellanox.com>
* Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
* Copyright (c) 2015 Elad Raz <eladr@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/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/notifier.h>
#include <linux/dcbnl.h>
#include <linux/inetdevice.h>
#include <linux/netlink.h>
#include <net/switchdev.h>
#include <net/pkt_cls.h>
#include <net/tc_act/tc_mirred.h>
#include <net/netevent.h>
#include <net/tc_act/tc_sample.h>
#include <net/addrconf.h>
#include "spectrum.h"
#include "pci.h"
#include "core.h"
#include "reg.h"
#include "port.h"
#include "trap.h"
#include "txheader.h"
#include "spectrum_cnt.h"
#include "spectrum_dpipe.h"
#include "spectrum_acl_flex_actions.h"
#include "../mlxfw/mlxfw.h"
#define MLXSW_FWREV_MAJOR 13
#define MLXSW_FWREV_MINOR 1530
#define MLXSW_FWREV_SUBMINOR 152
static const struct mlxsw_fw_rev mlxsw_sp_supported_fw_rev = {
.major = MLXSW_FWREV_MAJOR,
.minor = MLXSW_FWREV_MINOR,
.subminor = MLXSW_FWREV_SUBMINOR
};
#define MLXSW_SP_FW_FILENAME \
"mellanox/mlxsw_spectrum-" __stringify(MLXSW_FWREV_MAJOR) \
"." __stringify(MLXSW_FWREV_MINOR) \
"." __stringify(MLXSW_FWREV_SUBMINOR) ".mfa2"
static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
static const char mlxsw_sp_driver_version[] = "1.0";
/* tx_hdr_version
* Tx header version.
* Must be set to 1.
*/
MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
/* tx_hdr_ctl
* Packet control type.
* 0 - Ethernet control (e.g. EMADs, LACP)
* 1 - Ethernet data
*/
MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
/* tx_hdr_proto
* Packet protocol type. Must be set to 1 (Ethernet).
*/
MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
/* tx_hdr_rx_is_router
* Packet is sent from the router. Valid for data packets only.
*/
MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
/* tx_hdr_fid_valid
* Indicates if the 'fid' field is valid and should be used for
* forwarding lookup. Valid for data packets only.
*/
MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
/* tx_hdr_swid
* Switch partition ID. Must be set to 0.
*/
MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
/* tx_hdr_control_tclass
* Indicates if the packet should use the control TClass and not one
* of the data TClasses.
*/
MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
/* tx_hdr_etclass
* Egress TClass to be used on the egress device on the egress port.
*/
MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
/* tx_hdr_port_mid
* Destination local port for unicast packets.
* Destination multicast ID for multicast packets.
*
* Control packets are directed to a specific egress port, while data
* packets are transmitted through the CPU port (0) into the switch partition,
* where forwarding rules are applied.
*/
MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
/* tx_hdr_fid
* Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
* set, otherwise calculated based on the packet's VID using VID to FID mapping.
* Valid for data packets only.
*/
MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
/* tx_hdr_type
* 0 - Data packets
* 6 - Control packets
*/
MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
struct mlxsw_sp_mlxfw_dev {
struct mlxfw_dev mlxfw_dev;
struct mlxsw_sp *mlxsw_sp;
};
static int mlxsw_sp_component_query(struct mlxfw_dev *mlxfw_dev,
u16 component_index, u32 *p_max_size,
u8 *p_align_bits, u16 *p_max_write_size)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcqi_pl[MLXSW_REG_MCQI_LEN];
int err;
mlxsw_reg_mcqi_pack(mcqi_pl, component_index);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcqi), mcqi_pl);
if (err)
return err;
mlxsw_reg_mcqi_unpack(mcqi_pl, p_max_size, p_align_bits,
p_max_write_size);
*p_align_bits = max_t(u8, *p_align_bits, 2);
*p_max_write_size = min_t(u16, *p_max_write_size,
MLXSW_REG_MCDA_MAX_DATA_LEN);
return 0;
}
static int mlxsw_sp_fsm_lock(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcc_pl[MLXSW_REG_MCC_LEN];
u8 control_state;
int err;
mlxsw_reg_mcc_pack(mcc_pl, 0, 0, 0, 0);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
if (err)
return err;
mlxsw_reg_mcc_unpack(mcc_pl, fwhandle, NULL, &control_state);
if (control_state != MLXFW_FSM_STATE_IDLE)
return -EBUSY;
mlxsw_reg_mcc_pack(mcc_pl,
MLXSW_REG_MCC_INSTRUCTION_LOCK_UPDATE_HANDLE,
0, *fwhandle, 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}
static int mlxsw_sp_fsm_component_update(struct mlxfw_dev *mlxfw_dev,
u32 fwhandle, u16 component_index,
u32 component_size)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcc_pl[MLXSW_REG_MCC_LEN];
mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_UPDATE_COMPONENT,
component_index, fwhandle, component_size);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}
static int mlxsw_sp_fsm_block_download(struct mlxfw_dev *mlxfw_dev,
u32 fwhandle, u8 *data, u16 size,
u32 offset)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcda_pl[MLXSW_REG_MCDA_LEN];
mlxsw_reg_mcda_pack(mcda_pl, fwhandle, offset, size, data);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcda), mcda_pl);
}
static int mlxsw_sp_fsm_component_verify(struct mlxfw_dev *mlxfw_dev,
u32 fwhandle, u16 component_index)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcc_pl[MLXSW_REG_MCC_LEN];
mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_VERIFY_COMPONENT,
component_index, fwhandle, 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}
static int mlxsw_sp_fsm_activate(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcc_pl[MLXSW_REG_MCC_LEN];
mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_ACTIVATE, 0,
fwhandle, 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}
static int mlxsw_sp_fsm_query_state(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
enum mlxfw_fsm_state *fsm_state,
enum mlxfw_fsm_state_err *fsm_state_err)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcc_pl[MLXSW_REG_MCC_LEN];
u8 control_state;
u8 error_code;
int err;
mlxsw_reg_mcc_pack(mcc_pl, 0, 0, fwhandle, 0);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
if (err)
return err;
mlxsw_reg_mcc_unpack(mcc_pl, NULL, &error_code, &control_state);
*fsm_state = control_state;
*fsm_state_err = min_t(enum mlxfw_fsm_state_err, error_code,
MLXFW_FSM_STATE_ERR_MAX);
return 0;
}
static void mlxsw_sp_fsm_cancel(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcc_pl[MLXSW_REG_MCC_LEN];
mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_CANCEL, 0,
fwhandle, 0);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}
static void mlxsw_sp_fsm_release(struct mlxfw_dev *mlxfw_dev, u32 fwhandle)
{
struct mlxsw_sp_mlxfw_dev *mlxsw_sp_mlxfw_dev =
container_of(mlxfw_dev, struct mlxsw_sp_mlxfw_dev, mlxfw_dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_mlxfw_dev->mlxsw_sp;
char mcc_pl[MLXSW_REG_MCC_LEN];
mlxsw_reg_mcc_pack(mcc_pl,
MLXSW_REG_MCC_INSTRUCTION_RELEASE_UPDATE_HANDLE, 0,
fwhandle, 0);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mcc), mcc_pl);
}
static const struct mlxfw_dev_ops mlxsw_sp_mlxfw_dev_ops = {
.component_query = mlxsw_sp_component_query,
.fsm_lock = mlxsw_sp_fsm_lock,
.fsm_component_update = mlxsw_sp_fsm_component_update,
.fsm_block_download = mlxsw_sp_fsm_block_download,
.fsm_component_verify = mlxsw_sp_fsm_component_verify,
.fsm_activate = mlxsw_sp_fsm_activate,
.fsm_query_state = mlxsw_sp_fsm_query_state,
.fsm_cancel = mlxsw_sp_fsm_cancel,
.fsm_release = mlxsw_sp_fsm_release
};
static int mlxsw_sp_firmware_flash(struct mlxsw_sp *mlxsw_sp,
const struct firmware *firmware)
{
struct mlxsw_sp_mlxfw_dev mlxsw_sp_mlxfw_dev = {
.mlxfw_dev = {
.ops = &mlxsw_sp_mlxfw_dev_ops,
.psid = mlxsw_sp->bus_info->psid,
.psid_size = strlen(mlxsw_sp->bus_info->psid),
},
.mlxsw_sp = mlxsw_sp
};
return mlxfw_firmware_flash(&mlxsw_sp_mlxfw_dev.mlxfw_dev, firmware);
}
static bool mlxsw_sp_fw_rev_ge(const struct mlxsw_fw_rev *a,
const struct mlxsw_fw_rev *b)
{
if (a->major != b->major)
return a->major > b->major;
if (a->minor != b->minor)
return a->minor > b->minor;
return a->subminor >= b->subminor;
}
static int mlxsw_sp_fw_rev_validate(struct mlxsw_sp *mlxsw_sp)
{
const struct mlxsw_fw_rev *rev = &mlxsw_sp->bus_info->fw_rev;
const struct firmware *firmware;
int err;
if (mlxsw_sp_fw_rev_ge(rev, &mlxsw_sp_supported_fw_rev))
return 0;
dev_info(mlxsw_sp->bus_info->dev, "The firmware version %d.%d.%d is out of date\n",
rev->major, rev->minor, rev->subminor);
dev_info(mlxsw_sp->bus_info->dev, "Upgrading firmware using file %s\n",
MLXSW_SP_FW_FILENAME);
err = request_firmware_direct(&firmware, MLXSW_SP_FW_FILENAME,
mlxsw_sp->bus_info->dev);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Could not request firmware file %s\n",
MLXSW_SP_FW_FILENAME);
return err;
}
err = mlxsw_sp_firmware_flash(mlxsw_sp, firmware);
release_firmware(firmware);
return err;
}
int mlxsw_sp_flow_counter_get(struct mlxsw_sp *mlxsw_sp,
unsigned int counter_index, u64 *packets,
u64 *bytes)
{
char mgpc_pl[MLXSW_REG_MGPC_LEN];
int err;
mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_NOP,
MLXSW_REG_FLOW_COUNTER_SET_TYPE_PACKETS_BYTES);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl);
if (err)
return err;
if (packets)
*packets = mlxsw_reg_mgpc_packet_counter_get(mgpc_pl);
if (bytes)
*bytes = mlxsw_reg_mgpc_byte_counter_get(mgpc_pl);
return 0;
}
static int mlxsw_sp_flow_counter_clear(struct mlxsw_sp *mlxsw_sp,
unsigned int counter_index)
{
char mgpc_pl[MLXSW_REG_MGPC_LEN];
mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_CLEAR,
MLXSW_REG_FLOW_COUNTER_SET_TYPE_PACKETS_BYTES);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl);
}
int mlxsw_sp_flow_counter_alloc(struct mlxsw_sp *mlxsw_sp,
unsigned int *p_counter_index)
{
int err;
err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
p_counter_index);
if (err)
return err;
err = mlxsw_sp_flow_counter_clear(mlxsw_sp, *p_counter_index);
if (err)
goto err_counter_clear;
return 0;
err_counter_clear:
mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
*p_counter_index);
return err;
}
void mlxsw_sp_flow_counter_free(struct mlxsw_sp *mlxsw_sp,
unsigned int counter_index)
{
mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW,
counter_index);
}
static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
const struct mlxsw_tx_info *tx_info)
{
char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
memset(txhdr, 0, MLXSW_TXHDR_LEN);
mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
mlxsw_tx_hdr_swid_set(txhdr, 0);
mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
}
int mlxsw_sp_port_vid_stp_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid,
u8 state)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
enum mlxsw_reg_spms_state spms_state;
char *spms_pl;
int err;
switch (state) {
case BR_STATE_FORWARDING:
spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
break;
case BR_STATE_LEARNING:
spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
break;
case BR_STATE_LISTENING: /* fall-through */
case BR_STATE_DISABLED: /* fall-through */
case BR_STATE_BLOCKING:
spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
break;
default:
BUG();
}
spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
if (!spms_pl)
return -ENOMEM;
mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
kfree(spms_pl);
return err;
}
static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
{
char spad_pl[MLXSW_REG_SPAD_LEN] = {0};
int err;
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
if (err)
return err;
mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
return 0;
}
static int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
{
int i;
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_SPAN))
return -EIO;
mlxsw_sp->span.entries_count = MLXSW_CORE_RES_GET(mlxsw_sp->core,
MAX_SPAN);
mlxsw_sp->span.entries = kcalloc(mlxsw_sp->span.entries_count,
sizeof(struct mlxsw_sp_span_entry),
GFP_KERNEL);
if (!mlxsw_sp->span.entries)
return -ENOMEM;
for (i = 0; i < mlxsw_sp->span.entries_count; i++)
INIT_LIST_HEAD(&mlxsw_sp->span.entries[i].bound_ports_list);
return 0;
}
static void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
{
int i;
for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
WARN_ON_ONCE(!list_empty(&curr->bound_ports_list));
}
kfree(mlxsw_sp->span.entries);
}
static struct mlxsw_sp_span_entry *
mlxsw_sp_span_entry_create(struct mlxsw_sp_port *port)
{
struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
struct mlxsw_sp_span_entry *span_entry;
char mpat_pl[MLXSW_REG_MPAT_LEN];
u8 local_port = port->local_port;
int index;
int i;
int err;
/* find a free entry to use */
index = -1;
for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
if (!mlxsw_sp->span.entries[i].used) {
index = i;
span_entry = &mlxsw_sp->span.entries[i];
break;
}
}
if (index < 0)
return NULL;
/* create a new port analayzer entry for local_port */
mlxsw_reg_mpat_pack(mpat_pl, index, local_port, true);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
if (err)
return NULL;
span_entry->used = true;
span_entry->id = index;
span_entry->ref_count = 1;
span_entry->local_port = local_port;
return span_entry;
}
static void mlxsw_sp_span_entry_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_span_entry *span_entry)
{
u8 local_port = span_entry->local_port;
char mpat_pl[MLXSW_REG_MPAT_LEN];
int pa_id = span_entry->id;
mlxsw_reg_mpat_pack(mpat_pl, pa_id, local_port, false);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
span_entry->used = false;
}
static struct mlxsw_sp_span_entry *
mlxsw_sp_span_entry_find(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
int i;
for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
if (curr->used && curr->local_port == local_port)
return curr;
}
return NULL;
}
static struct mlxsw_sp_span_entry
*mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
{
struct mlxsw_sp_span_entry *span_entry;
span_entry = mlxsw_sp_span_entry_find(port->mlxsw_sp,
port->local_port);
if (span_entry) {
/* Already exists, just take a reference */
span_entry->ref_count++;
return span_entry;
}
return mlxsw_sp_span_entry_create(port);
}
static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_span_entry *span_entry)
{
WARN_ON(!span_entry->ref_count);
if (--span_entry->ref_count == 0)
mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
return 0;
}
static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
{
struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
struct mlxsw_sp_span_inspected_port *p;
int i;
for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
list_for_each_entry(p, &curr->bound_ports_list, list)
if (p->local_port == port->local_port &&
p->type == MLXSW_SP_SPAN_EGRESS)
return true;
}
return false;
}
static int mlxsw_sp_span_mtu_to_buffsize(const struct mlxsw_sp *mlxsw_sp,
int mtu)
{
return mlxsw_sp_bytes_cells(mlxsw_sp, mtu * 5 / 2) + 1;
}
static 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;
}
}
return 0;
}
static struct mlxsw_sp_span_inspected_port *
mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
struct mlxsw_sp_span_entry *span_entry)
{
struct mlxsw_sp_span_inspected_port *p;
list_for_each_entry(p, &span_entry->bound_ports_list, list)
if (port->local_port == p->local_port)
return p;
return NULL;
}
static int
mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
struct mlxsw_sp_span_entry *span_entry,
enum mlxsw_sp_span_type type)
{
struct mlxsw_sp_span_inspected_port *inspected_port;
struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
char mpar_pl[MLXSW_REG_MPAR_LEN];
char sbib_pl[MLXSW_REG_SBIB_LEN];
int pa_id = span_entry->id;
int err;
/* 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");
return err;
}
}
/* bind the port to the SPAN entry */
mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
(enum mlxsw_reg_mpar_i_e) type, true, pa_id);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
if (err)
goto err_mpar_reg_write;
inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
if (!inspected_port) {
err = -ENOMEM;
goto err_inspected_port_alloc;
}
inspected_port->local_port = port->local_port;
inspected_port->type = type;
list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);
return 0;
err_mpar_reg_write:
err_inspected_port_alloc:
if (type == MLXSW_SP_SPAN_EGRESS) {
mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
}
return err;
}
static void
mlxsw_sp_span_inspected_port_unbind(struct mlxsw_sp_port *port,
struct mlxsw_sp_span_entry *span_entry,
enum mlxsw_sp_span_type type)
{
struct mlxsw_sp_span_inspected_port *inspected_port;
struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
char mpar_pl[MLXSW_REG_MPAR_LEN];
char sbib_pl[MLXSW_REG_SBIB_LEN];
int pa_id = span_entry->id;
inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
if (!inspected_port)
return;
/* remove the inspected port */
mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
(enum mlxsw_reg_mpar_i_e) type, false, pa_id);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
/* remove the SBIB buffer if it was egress SPAN */
if (type == MLXSW_SP_SPAN_EGRESS) {
mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
}
mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
list_del(&inspected_port->list);
kfree(inspected_port);
}
static int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
struct mlxsw_sp_port *to,
enum mlxsw_sp_span_type type)
{
struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
struct mlxsw_sp_span_entry *span_entry;
int err;
span_entry = mlxsw_sp_span_entry_get(to);
if (!span_entry)
return -ENOENT;
netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
span_entry->id);
err = mlxsw_sp_span_inspected_port_bind(from, span_entry, type);
if (err)
goto err_port_bind;
return 0;
err_port_bind:
mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
return err;
}
static void mlxsw_sp_span_mirror_remove(struct mlxsw_sp_port *from,
u8 destination_port,
enum mlxsw_sp_span_type type)
{
struct mlxsw_sp_span_entry *span_entry;
span_entry = mlxsw_sp_span_entry_find(from->mlxsw_sp,
destination_port);
if (!span_entry) {
netdev_err(from->dev, "no span entry found\n");
return;
}
netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
span_entry->id);
mlxsw_sp_span_inspected_port_unbind(from, span_entry, type);
}
static int mlxsw_sp_port_sample_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool enable, u32 rate)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char mpsc_pl[MLXSW_REG_MPSC_LEN];
mlxsw_reg_mpsc_pack(mpsc_pl, mlxsw_sp_port->local_port, enable, rate);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpsc), mpsc_pl);
}
static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool is_up)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char paos_pl[MLXSW_REG_PAOS_LEN];
mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
MLXSW_PORT_ADMIN_STATUS_DOWN);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
}
static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
unsigned char *addr)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char ppad_pl[MLXSW_REG_PPAD_LEN];
mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
}
static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
ether_addr_copy(addr, mlxsw_sp->base_mac);
addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
}
static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char pmtu_pl[MLXSW_REG_PMTU_LEN];
int max_mtu;
int err;
mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
if (err)
return err;
max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
if (mtu > max_mtu)
return -EINVAL;
mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
}
static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char pspa_pl[MLXSW_REG_PSPA_LEN];
mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
}
int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port, bool enable)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char svpe_pl[MLXSW_REG_SVPE_LEN];
mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
}
int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid,
bool learn_enable)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char *spvmlr_pl;
int err;
spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
if (!spvmlr_pl)
return -ENOMEM;
mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
learn_enable);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
kfree(spvmlr_pl);
return err;
}
static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char spvid_pl[MLXSW_REG_SPVID_LEN];
mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
}
static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool allow)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char spaft_pl[MLXSW_REG_SPAFT_LEN];
mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
}
int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
int err;
if (!vid) {
err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
if (err)
return err;
} else {
err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
if (err)
return err;
err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, true);
if (err)
goto err_port_allow_untagged_set;
}
mlxsw_sp_port->pvid = vid;
return 0;
err_port_allow_untagged_set:
__mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
return err;
}
static int
mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sspr_pl[MLXSW_REG_SSPR_LEN];
mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
}
static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
u8 local_port, u8 *p_module,
u8 *p_width, u8 *p_lane)
{
char pmlp_pl[MLXSW_REG_PMLP_LEN];
int err;
mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
if (err)
return err;
*p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
*p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
*p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
return 0;
}
static int mlxsw_sp_port_module_map(struct mlxsw_sp_port *mlxsw_sp_port,
u8 module, u8 width, u8 lane)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char pmlp_pl[MLXSW_REG_PMLP_LEN];
int i;
mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
mlxsw_reg_pmlp_width_set(pmlp_pl, width);
for (i = 0; i < width; i++) {
mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i); /* Rx & Tx */
}
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
}
static int mlxsw_sp_port_module_unmap(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char pmlp_pl[MLXSW_REG_PMLP_LEN];
mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
}
static int mlxsw_sp_port_open(struct net_device *dev)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err;
err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
if (err)
return err;
netif_start_queue(dev);
return 0;
}
static int mlxsw_sp_port_stop(struct net_device *dev)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
netif_stop_queue(dev);
return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
}
static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
const struct mlxsw_tx_info tx_info = {
.local_port = mlxsw_sp_port->local_port,
.is_emad = false,
};
u64 len;
int err;
if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
return NETDEV_TX_BUSY;
if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
struct sk_buff *skb_orig = skb;
skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
if (!skb) {
this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
dev_kfree_skb_any(skb_orig);
return NETDEV_TX_OK;
}
dev_consume_skb_any(skb_orig);
}
if (eth_skb_pad(skb)) {
this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
return NETDEV_TX_OK;
}
mlxsw_sp_txhdr_construct(skb, &tx_info);
/* TX header is consumed by HW on the way so we shouldn't count its
* bytes as being sent.
*/
len = skb->len - MLXSW_TXHDR_LEN;
/* Due to a race we might fail here because of a full queue. In that
* unlikely case we simply drop the packet.
*/
err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);
if (!err) {
pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
u64_stats_update_begin(&pcpu_stats->syncp);
pcpu_stats->tx_packets++;
pcpu_stats->tx_bytes += len;
u64_stats_update_end(&pcpu_stats->syncp);
} else {
this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
dev_kfree_skb_any(skb);
}
return NETDEV_TX_OK;
}
static void mlxsw_sp_set_rx_mode(struct net_device *dev)
{
}
static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct sockaddr *addr = p;
int err;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
if (err)
return err;
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
return 0;
}
static u16 mlxsw_sp_pg_buf_threshold_get(const struct mlxsw_sp *mlxsw_sp,
int mtu)
{
return 2 * mlxsw_sp_bytes_cells(mlxsw_sp, mtu);
}
#define MLXSW_SP_CELL_FACTOR 2 /* 2 * cell_size / (IPG + cell_size + 1) */
static u16 mlxsw_sp_pfc_delay_get(const struct mlxsw_sp *mlxsw_sp, int mtu,
u16 delay)
{
delay = mlxsw_sp_bytes_cells(mlxsw_sp, DIV_ROUND_UP(delay,
BITS_PER_BYTE));
return MLXSW_SP_CELL_FACTOR * delay + mlxsw_sp_bytes_cells(mlxsw_sp,
mtu);
}
/* Maximum delay buffer needed in case of PAUSE frames, in bytes.
* Assumes 100m cable and maximum MTU.
*/
#define MLXSW_SP_PAUSE_DELAY 58752
static u16 mlxsw_sp_pg_buf_delay_get(const struct mlxsw_sp *mlxsw_sp, int mtu,
u16 delay, bool pfc, bool pause)
{
if (pfc)
return mlxsw_sp_pfc_delay_get(mlxsw_sp, mtu, delay);
else if (pause)
return mlxsw_sp_bytes_cells(mlxsw_sp, MLXSW_SP_PAUSE_DELAY);
else
return 0;
}
static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int index, u16 size, u16 thres,
bool lossy)
{
if (lossy)
mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, index, size);
else
mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, index, size,
thres);
}
int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
u8 *prio_tc, bool pause_en,
struct ieee_pfc *my_pfc)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
u16 delay = !!my_pfc ? my_pfc->delay : 0;
char pbmc_pl[MLXSW_REG_PBMC_LEN];
int i, j, err;
mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0, 0);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
if (err)
return err;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
bool configure = false;
bool pfc = false;
bool lossy;
u16 thres;
for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
if (prio_tc[j] == i) {
pfc = pfc_en & BIT(j);
configure = true;
break;
}
}
if (!configure)
continue;
lossy = !(pfc || pause_en);
thres = mlxsw_sp_pg_buf_threshold_get(mlxsw_sp, mtu);
delay = mlxsw_sp_pg_buf_delay_get(mlxsw_sp, mtu, delay, pfc,
pause_en);
mlxsw_sp_pg_buf_pack(pbmc_pl, i, thres + delay, thres, lossy);
}
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
}
static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
int mtu, bool pause_en)
{
u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
bool dcb_en = !!mlxsw_sp_port->dcb.ets;
struct ieee_pfc *my_pfc;
u8 *prio_tc;
prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
pause_en, my_pfc);
}
static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
int err;
err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
if (err)
return err;
err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
if (err)
goto err_span_port_mtu_update;
err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
if (err)
goto err_port_mtu_set;
dev->mtu = mtu;
return 0;
err_port_mtu_set:
mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
err_span_port_mtu_update:
mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
return err;
}
static int
mlxsw_sp_port_get_sw_stats64(const struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp_port_pcpu_stats *p;
u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
u32 tx_dropped = 0;
unsigned int start;
int i;
for_each_possible_cpu(i) {
p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
do {
start = u64_stats_fetch_begin_irq(&p->syncp);
rx_packets = p->rx_packets;
rx_bytes = p->rx_bytes;
tx_packets = p->tx_packets;
tx_bytes = p->tx_bytes;
} while (u64_stats_fetch_retry_irq(&p->syncp, start));
stats->rx_packets += rx_packets;
stats->rx_bytes += rx_bytes;
stats->tx_packets += tx_packets;
stats->tx_bytes += tx_bytes;
/* tx_dropped is u32, updated without syncp protection. */
tx_dropped += p->tx_dropped;
}
stats->tx_dropped = tx_dropped;
return 0;
}
static bool mlxsw_sp_port_has_offload_stats(const struct net_device *dev, int attr_id)
{
switch (attr_id) {
case IFLA_OFFLOAD_XSTATS_CPU_HIT:
return true;
}
return false;
}
static int mlxsw_sp_port_get_offload_stats(int attr_id, const struct net_device *dev,
void *sp)
{
switch (attr_id) {
case IFLA_OFFLOAD_XSTATS_CPU_HIT:
return mlxsw_sp_port_get_sw_stats64(dev, sp);
}
return -EINVAL;
}
static int mlxsw_sp_port_get_stats_raw(struct net_device *dev, int grp,
int prio, char *ppcnt_pl)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
}
static int mlxsw_sp_port_get_hw_stats(struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
int err;
err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT,
0, ppcnt_pl);
if (err)
goto out;
stats->tx_packets =
mlxsw_reg_ppcnt_a_frames_transmitted_ok_get(ppcnt_pl);
stats->rx_packets =
mlxsw_reg_ppcnt_a_frames_received_ok_get(ppcnt_pl);
stats->tx_bytes =
mlxsw_reg_ppcnt_a_octets_transmitted_ok_get(ppcnt_pl);
stats->rx_bytes =
mlxsw_reg_ppcnt_a_octets_received_ok_get(ppcnt_pl);
stats->multicast =
mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get(ppcnt_pl);
stats->rx_crc_errors =
mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get(ppcnt_pl);
stats->rx_frame_errors =
mlxsw_reg_ppcnt_a_alignment_errors_get(ppcnt_pl);
stats->rx_length_errors = (
mlxsw_reg_ppcnt_a_in_range_length_errors_get(ppcnt_pl) +
mlxsw_reg_ppcnt_a_out_of_range_length_field_get(ppcnt_pl) +
mlxsw_reg_ppcnt_a_frame_too_long_errors_get(ppcnt_pl));
stats->rx_errors = (stats->rx_crc_errors +
stats->rx_frame_errors + stats->rx_length_errors);
out:
return err;
}
static void
mlxsw_sp_port_get_hw_xstats(struct net_device *dev,
struct mlxsw_sp_port_xstats *xstats)
{
char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
int err, i;
err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_EXT_CNT, 0,
ppcnt_pl);
if (!err)
xstats->ecn = mlxsw_reg_ppcnt_ecn_marked_get(ppcnt_pl);
for (i = 0; i < TC_MAX_QUEUE; i++) {
err = mlxsw_sp_port_get_stats_raw(dev,
MLXSW_REG_PPCNT_TC_CONG_TC,
i, ppcnt_pl);
if (!err)
xstats->wred_drop[i] =
mlxsw_reg_ppcnt_wred_discard_get(ppcnt_pl);
err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_TC_CNT,
i, ppcnt_pl);
if (err)
continue;
xstats->backlog[i] =
mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);
xstats->tail_drop[i] =
mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get(ppcnt_pl);
}
}
static void update_stats_cache(struct work_struct *work)
{
struct mlxsw_sp_port *mlxsw_sp_port =
container_of(work, struct mlxsw_sp_port,
periodic_hw_stats.update_dw.work);
if (!netif_carrier_ok(mlxsw_sp_port->dev))
goto out;
mlxsw_sp_port_get_hw_stats(mlxsw_sp_port->dev,
&mlxsw_sp_port->periodic_hw_stats.stats);
mlxsw_sp_port_get_hw_xstats(mlxsw_sp_port->dev,
&mlxsw_sp_port->periodic_hw_stats.xstats);
out:
mlxsw_core_schedule_dw(&mlxsw_sp_port->periodic_hw_stats.update_dw,
MLXSW_HW_STATS_UPDATE_TIME);
}
/* Return the stats from a cache that is updated periodically,
* as this function might get called in an atomic context.
*/
static void
mlxsw_sp_port_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
memcpy(stats, &mlxsw_sp_port->periodic_hw_stats.stats, sizeof(*stats));
}
static int __mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid_begin, u16 vid_end,
bool is_member, bool untagged)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char *spvm_pl;
int err;
spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
if (!spvm_pl)
return -ENOMEM;
mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
vid_end, is_member, untagged);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
kfree(spvm_pl);
return err;
}
int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
u16 vid_end, bool is_member, bool untagged)
{
u16 vid, vid_e;
int err;
for (vid = vid_begin; vid <= vid_end;
vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
vid_end);
err = __mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
is_member, untagged);
if (err)
return err;
}
return 0;
}
static void mlxsw_sp_port_vlan_flush(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, *tmp;
list_for_each_entry_safe(mlxsw_sp_port_vlan, tmp,
&mlxsw_sp_port->vlans_list, list)
mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
}
static struct mlxsw_sp_port_vlan *
mlxsw_sp_port_vlan_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
bool untagged = vid == 1;
int err;
err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true, untagged);
if (err)
return ERR_PTR(err);
mlxsw_sp_port_vlan = kzalloc(sizeof(*mlxsw_sp_port_vlan), GFP_KERNEL);
if (!mlxsw_sp_port_vlan) {
err = -ENOMEM;
goto err_port_vlan_alloc;
}
mlxsw_sp_port_vlan->mlxsw_sp_port = mlxsw_sp_port;
mlxsw_sp_port_vlan->vid = vid;
list_add(&mlxsw_sp_port_vlan->list, &mlxsw_sp_port->vlans_list);
return mlxsw_sp_port_vlan;
err_port_vlan_alloc:
mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
return ERR_PTR(err);
}
static void
mlxsw_sp_port_vlan_destroy(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
u16 vid = mlxsw_sp_port_vlan->vid;
list_del(&mlxsw_sp_port_vlan->list);
kfree(mlxsw_sp_port_vlan);
mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
}
struct mlxsw_sp_port_vlan *
mlxsw_sp_port_vlan_get(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
if (mlxsw_sp_port_vlan)
return mlxsw_sp_port_vlan;
return mlxsw_sp_port_vlan_create(mlxsw_sp_port, vid);
}
void mlxsw_sp_port_vlan_put(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
if (mlxsw_sp_port_vlan->bridge_port)
mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan);
else if (fid)
mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
mlxsw_sp_port_vlan_destroy(mlxsw_sp_port_vlan);
}
static int mlxsw_sp_port_add_vid(struct net_device *dev,
__be16 __always_unused proto, u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
/* VLAN 0 is added to HW filter when device goes up, but it is
* reserved in our case, so simply return.
*/
if (!vid)
return 0;
return PTR_ERR_OR_ZERO(mlxsw_sp_port_vlan_get(mlxsw_sp_port, vid));
}
static int mlxsw_sp_port_kill_vid(struct net_device *dev,
__be16 __always_unused proto, u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
/* VLAN 0 is removed from HW filter when device goes down, but
* it is reserved in our case, so simply return.
*/
if (!vid)
return 0;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
if (!mlxsw_sp_port_vlan)
return 0;
mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
return 0;
}
static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
size_t len)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
u8 module = mlxsw_sp_port->mapping.module;
u8 width = mlxsw_sp_port->mapping.width;
u8 lane = mlxsw_sp_port->mapping.lane;
int err;
if (!mlxsw_sp_port->split)
err = snprintf(name, len, "p%d", module + 1);
else
err = snprintf(name, len, "p%ds%d", module + 1,
lane / width);
if (err >= len)
return -EINVAL;
return 0;
}
static struct mlxsw_sp_port_mall_tc_entry *
mlxsw_sp_port_mall_tc_entry_find(struct mlxsw_sp_port *port,
unsigned long cookie) {
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
if (mall_tc_entry->cookie == cookie)
return mall_tc_entry;
return NULL;
}
static int
mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_port_mall_mirror_tc_entry *mirror,
const struct tc_action *a,
bool ingress)
{
enum mlxsw_sp_span_type span_type;
struct mlxsw_sp_port *to_port;
struct net_device *to_dev;
to_dev = tcf_mirred_dev(a);
if (!to_dev) {
netdev_err(mlxsw_sp_port->dev, "Could not find requested device\n");
return -EINVAL;
}
if (!mlxsw_sp_port_dev_check(to_dev)) {
netdev_err(mlxsw_sp_port->dev, "Cannot mirror to a non-spectrum port");
return -EOPNOTSUPP;
}
to_port = netdev_priv(to_dev);
mirror->to_local_port = to_port->local_port;
mirror->ingress = ingress;
span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
return mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
}
static void
mlxsw_sp_port_del_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_port_mall_mirror_tc_entry *mirror)
{
enum mlxsw_sp_span_type span_type;
span_type = mirror->ingress ?
MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
mlxsw_sp_span_mirror_remove(mlxsw_sp_port, mirror->to_local_port,
span_type);
}
static int
mlxsw_sp_port_add_cls_matchall_sample(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *cls,
const struct tc_action *a,
bool ingress)
{
int err;
if (!mlxsw_sp_port->sample)
return -EOPNOTSUPP;
if (rtnl_dereference(mlxsw_sp_port->sample->psample_group)) {
netdev_err(mlxsw_sp_port->dev, "sample already active\n");
return -EEXIST;
}
if (tcf_sample_rate(a) > MLXSW_REG_MPSC_RATE_MAX) {
netdev_err(mlxsw_sp_port->dev, "sample rate not supported\n");
return -EOPNOTSUPP;
}
rcu_assign_pointer(mlxsw_sp_port->sample->psample_group,
tcf_sample_psample_group(a));
mlxsw_sp_port->sample->truncate = tcf_sample_truncate(a);
mlxsw_sp_port->sample->trunc_size = tcf_sample_trunc_size(a);
mlxsw_sp_port->sample->rate = tcf_sample_rate(a);
err = mlxsw_sp_port_sample_set(mlxsw_sp_port, true, tcf_sample_rate(a));
if (err)
goto err_port_sample_set;
return 0;
err_port_sample_set:
RCU_INIT_POINTER(mlxsw_sp_port->sample->psample_group, NULL);
return err;
}
static void
mlxsw_sp_port_del_cls_matchall_sample(struct mlxsw_sp_port *mlxsw_sp_port)
{
if (!mlxsw_sp_port->sample)
return;
mlxsw_sp_port_sample_set(mlxsw_sp_port, false, 1);
RCU_INIT_POINTER(mlxsw_sp_port->sample->psample_group, NULL);
}
static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *f,
bool ingress)
{
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
__be16 protocol = f->common.protocol;
const struct tc_action *a;
LIST_HEAD(actions);
int err;
if (!tcf_exts_has_one_action(f->exts)) {
netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
return -EOPNOTSUPP;
}
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
if (!mall_tc_entry)
return -ENOMEM;
mall_tc_entry->cookie = f->cookie;
tcf_exts_to_list(f->exts, &actions);
a = list_first_entry(&actions, struct tc_action, list);
if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
struct mlxsw_sp_port_mall_mirror_tc_entry *mirror;
mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
mirror = &mall_tc_entry->mirror;
err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port,
mirror, a, ingress);
} else if (is_tcf_sample(a) && protocol == htons(ETH_P_ALL)) {
mall_tc_entry->type = MLXSW_SP_PORT_MALL_SAMPLE;
err = mlxsw_sp_port_add_cls_matchall_sample(mlxsw_sp_port, f,
a, ingress);
} else {
err = -EOPNOTSUPP;
}
if (err)
goto err_add_action;
list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
return 0;
err_add_action:
kfree(mall_tc_entry);
return err;
}
static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *f)
{
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
mall_tc_entry = mlxsw_sp_port_mall_tc_entry_find(mlxsw_sp_port,
f->cookie);
if (!mall_tc_entry) {
netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
return;
}
list_del(&mall_tc_entry->list);
switch (mall_tc_entry->type) {
case MLXSW_SP_PORT_MALL_MIRROR:
mlxsw_sp_port_del_cls_matchall_mirror(mlxsw_sp_port,
&mall_tc_entry->mirror);
break;
case MLXSW_SP_PORT_MALL_SAMPLE:
mlxsw_sp_port_del_cls_matchall_sample(mlxsw_sp_port);
break;
default:
WARN_ON(1);
}
kfree(mall_tc_entry);
}
static int mlxsw_sp_setup_tc_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *f,
bool ingress)
{
if (f->common.chain_index)
return -EOPNOTSUPP;
switch (f->command) {
case TC_CLSMATCHALL_REPLACE:
return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port, f,
ingress);
case TC_CLSMATCHALL_DESTROY:
mlxsw_sp_port_del_cls_matchall(mlxsw_sp_port, f);
return 0;
default:
return -EOPNOTSUPP;
}
}
static int
mlxsw_sp_setup_tc_cls_flower(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_flower_offload *f,
bool ingress)
{
switch (f->command) {
case TC_CLSFLOWER_REPLACE:
return mlxsw_sp_flower_replace(mlxsw_sp_port, ingress, f);
case TC_CLSFLOWER_DESTROY:
mlxsw_sp_flower_destroy(mlxsw_sp_port, ingress, f);
return 0;
case TC_CLSFLOWER_STATS:
return mlxsw_sp_flower_stats(mlxsw_sp_port, ingress, f);
default:
return -EOPNOTSUPP;
}
}
static int mlxsw_sp_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
void *cb_priv, bool ingress)
{
struct mlxsw_sp_port *mlxsw_sp_port = cb_priv;
if (!tc_can_offload(mlxsw_sp_port->dev))
return -EOPNOTSUPP;
switch (type) {
case TC_SETUP_CLSMATCHALL:
return mlxsw_sp_setup_tc_cls_matchall(mlxsw_sp_port, type_data,
ingress);
case TC_SETUP_CLSFLOWER:
return mlxsw_sp_setup_tc_cls_flower(mlxsw_sp_port, type_data,
ingress);
default:
return -EOPNOTSUPP;
}
}
static int mlxsw_sp_setup_tc_block_cb_ig(enum tc_setup_type type,
void *type_data, void *cb_priv)
{
return mlxsw_sp_setup_tc_block_cb(type, type_data, cb_priv, true);
}
static int mlxsw_sp_setup_tc_block_cb_eg(enum tc_setup_type type,
void *type_data, void *cb_priv)
{
return mlxsw_sp_setup_tc_block_cb(type, type_data, cb_priv, false);
}
static int mlxsw_sp_setup_tc_block(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_block_offload *f)
{
tc_setup_cb_t *cb;
if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
cb = mlxsw_sp_setup_tc_block_cb_ig;
else if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS)
cb = mlxsw_sp_setup_tc_block_cb_eg;
else
return -EOPNOTSUPP;
switch (f->command) {
case TC_BLOCK_BIND:
return tcf_block_cb_register(f->block, cb, mlxsw_sp_port,
mlxsw_sp_port);
case TC_BLOCK_UNBIND:
tcf_block_cb_unregister(f->block, cb, mlxsw_sp_port);
return 0;
default:
return -EOPNOTSUPP;
}
}
static int mlxsw_sp_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
switch (type) {
case TC_SETUP_BLOCK:
return mlxsw_sp_setup_tc_block(mlxsw_sp_port, type_data);
case TC_SETUP_QDISC_RED:
return mlxsw_sp_setup_tc_red(mlxsw_sp_port, type_data);
case TC_SETUP_QDISC_PRIO:
return mlxsw_sp_setup_tc_prio(mlxsw_sp_port, type_data);
default:
return -EOPNOTSUPP;
}
}
static int mlxsw_sp_feature_hw_tc(struct net_device *dev, bool enable)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
if (!enable && (mlxsw_sp_port->acl_rule_count ||
!list_empty(&mlxsw_sp_port->mall_tc_list))) {
netdev_err(dev, "Active offloaded tc filters, can't turn hw_tc_offload off\n");
return -EINVAL;
}
return 0;
}
typedef int (*mlxsw_sp_feature_handler)(struct net_device *dev, bool enable);
static int mlxsw_sp_handle_feature(struct net_device *dev,
netdev_features_t wanted_features,
netdev_features_t feature,
mlxsw_sp_feature_handler feature_handler)
{
netdev_features_t changes = wanted_features ^ dev->features;
bool enable = !!(wanted_features & feature);
int err;
if (!(changes & feature))
return 0;
err = feature_handler(dev, enable);
if (err) {
netdev_err(dev, "%s feature %pNF failed, err %d\n",
enable ? "Enable" : "Disable", &feature, err);
return err;
}
if (enable)
dev->features |= feature;
else
dev->features &= ~feature;
return 0;
}
static int mlxsw_sp_set_features(struct net_device *dev,
netdev_features_t features)
{
return mlxsw_sp_handle_feature(dev, features, NETIF_F_HW_TC,
mlxsw_sp_feature_hw_tc);
}
static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
.ndo_open = mlxsw_sp_port_open,
.ndo_stop = mlxsw_sp_port_stop,
.ndo_start_xmit = mlxsw_sp_port_xmit,
.ndo_setup_tc = mlxsw_sp_setup_tc,
.ndo_set_rx_mode = mlxsw_sp_set_rx_mode,
.ndo_set_mac_address = mlxsw_sp_port_set_mac_address,
.ndo_change_mtu = mlxsw_sp_port_change_mtu,
.ndo_get_stats64 = mlxsw_sp_port_get_stats64,
.ndo_has_offload_stats = mlxsw_sp_port_has_offload_stats,
.ndo_get_offload_stats = mlxsw_sp_port_get_offload_stats,
.ndo_vlan_rx_add_vid = mlxsw_sp_port_add_vid,
.ndo_vlan_rx_kill_vid = mlxsw_sp_port_kill_vid,
.ndo_get_phys_port_name = mlxsw_sp_port_get_phys_port_name,
.ndo_set_features = mlxsw_sp_set_features,
};
static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *drvinfo)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, mlxsw_sp_driver_version,
sizeof(drvinfo->version));
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"%d.%d.%d",
mlxsw_sp->bus_info->fw_rev.major,
mlxsw_sp->bus_info->fw_rev.minor,
mlxsw_sp->bus_info->fw_rev.subminor);
strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
sizeof(drvinfo->bus_info));
}
static void mlxsw_sp_port_get_pauseparam(struct net_device *dev,
struct ethtool_pauseparam *pause)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
pause->rx_pause = mlxsw_sp_port->link.rx_pause;
pause->tx_pause = mlxsw_sp_port->link.tx_pause;
}
static int mlxsw_sp_port_pause_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct ethtool_pauseparam *pause)
{
char pfcc_pl[MLXSW_REG_PFCC_LEN];
mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port);
mlxsw_reg_pfcc_pprx_set(pfcc_pl, pause->rx_pause);
mlxsw_reg_pfcc_pptx_set(pfcc_pl, pause->tx_pause);
return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc),
pfcc_pl);
}
static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
struct ethtool_pauseparam *pause)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
bool pause_en = pause->tx_pause || pause->rx_pause;
int err;
if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
netdev_err(dev, "PFC already enabled on port\n");
return -EINVAL;
}
if (pause->autoneg) {
netdev_err(dev, "PAUSE frames autonegotiation isn't supported\n");
return -EINVAL;
}
err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
if (err) {
netdev_err(dev, "Failed to configure port's headroom\n");
return err;
}
err = mlxsw_sp_port_pause_set(mlxsw_sp_port, pause);
if (err) {
netdev_err(dev, "Failed to set PAUSE parameters\n");
goto err_port_pause_configure;
}
mlxsw_sp_port->link.rx_pause = pause->rx_pause;
mlxsw_sp_port->link.tx_pause = pause->tx_pause;
return 0;
err_port_pause_configure:
pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
return err;
}
struct mlxsw_sp_port_hw_stats {
char str[ETH_GSTRING_LEN];
u64 (*getter)(const char *payload);
bool cells_bytes;
};
static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
{
.str = "a_frames_transmitted_ok",
.getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
},
{
.str = "a_frames_received_ok",
.getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
},
{
.str = "a_frame_check_sequence_errors",
.getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
},
{
.str = "a_alignment_errors",
.getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
},
{
.str = "a_octets_transmitted_ok",
.getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
},
{
.str = "a_octets_received_ok",
.getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
},
{
.str = "a_multicast_frames_xmitted_ok",
.getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
},
{
.str = "a_broadcast_frames_xmitted_ok",
.getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
},
{
.str = "a_multicast_frames_received_ok",
.getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
},
{
.str = "a_broadcast_frames_received_ok",
.getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
},
{
.str = "a_in_range_length_errors",
.getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
},
{
.str = "a_out_of_range_length_field",
.getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
},
{
.str = "a_frame_too_long_errors",
.getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
},
{
.str = "a_symbol_error_during_carrier",
.getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
},
{
.str = "a_mac_control_frames_transmitted",
.getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
},
{
.str = "a_mac_control_frames_received",
.getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
},
{
.str = "a_unsupported_opcodes_received",
.getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
},
{
.str = "a_pause_mac_ctrl_frames_received",
.getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
},
{
.str = "a_pause_mac_ctrl_frames_xmitted",
.getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
},
};
#define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_prio_stats[] = {
{
.str = "rx_octets_prio",
.getter = mlxsw_reg_ppcnt_rx_octets_get,
},
{
.str = "rx_frames_prio",
.getter = mlxsw_reg_ppcnt_rx_frames_get,
},
{
.str = "tx_octets_prio",
.getter = mlxsw_reg_ppcnt_tx_octets_get,
},
{
.str = "tx_frames_prio",
.getter = mlxsw_reg_ppcnt_tx_frames_get,
},
{
.str = "rx_pause_prio",
.getter = mlxsw_reg_ppcnt_rx_pause_get,
},
{
.str = "rx_pause_duration_prio",
.getter = mlxsw_reg_ppcnt_rx_pause_duration_get,
},
{
.str = "tx_pause_prio",
.getter = mlxsw_reg_ppcnt_tx_pause_get,
},
{
.str = "tx_pause_duration_prio",
.getter = mlxsw_reg_ppcnt_tx_pause_duration_get,
},
};
#define MLXSW_SP_PORT_HW_PRIO_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_prio_stats)
static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
{
.str = "tc_transmit_queue_tc",
.getter = mlxsw_reg_ppcnt_tc_transmit_queue_get,
.cells_bytes = true,
},
{
.str = "tc_no_buffer_discard_uc_tc",
.getter = mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get,
},
};
#define MLXSW_SP_PORT_HW_TC_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_tc_stats)
#define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
(MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
IEEE_8021QAZ_MAX_TCS)
static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
{
int i;
for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
mlxsw_sp_port_hw_prio_stats[i].str, prio);
*p += ETH_GSTRING_LEN;
}
}
static void mlxsw_sp_port_get_tc_strings(u8 **p, int tc)
{
int i;
for (i = 0; i < MLXSW_SP_PORT_HW_TC_STATS_LEN; i++) {
snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
mlxsw_sp_port_hw_tc_stats[i].str, tc);
*p += ETH_GSTRING_LEN;
}
}
static void mlxsw_sp_port_get_strings(struct net_device *dev,
u32 stringset, u8 *data)
{
u8 *p = data;
int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
memcpy(p, mlxsw_sp_port_hw_stats[i].str,
ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
mlxsw_sp_port_get_prio_strings(&p, i);
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
mlxsw_sp_port_get_tc_strings(&p, i);
break;
}
}
static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
enum ethtool_phys_id_state state)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char mlcr_pl[MLXSW_REG_MLCR_LEN];
bool active;
switch (state) {
case ETHTOOL_ID_ACTIVE:
active = true;
break;
case ETHTOOL_ID_INACTIVE:
active = false;
break;
default:
return -EOPNOTSUPP;
}
mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
}
static int
mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
int *p_len, enum mlxsw_reg_ppcnt_grp grp)
{
switch (grp) {
case MLXSW_REG_PPCNT_IEEE_8023_CNT:
*p_hw_stats = mlxsw_sp_port_hw_stats;
*p_len = MLXSW_SP_PORT_HW_STATS_LEN;
break;
case MLXSW_REG_PPCNT_PRIO_CNT:
*p_hw_stats = mlxsw_sp_port_hw_prio_stats;
*p_len = MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
break;
case MLXSW_REG_PPCNT_TC_CNT:
*p_hw_stats = mlxsw_sp_port_hw_tc_stats;
*p_len = MLXSW_SP_PORT_HW_TC_STATS_LEN;
break;
default:
WARN_ON(1);
return -EOPNOTSUPP;
}
return 0;
}
static void __mlxsw_sp_port_get_stats(struct net_device *dev,
enum mlxsw_reg_ppcnt_grp grp, int prio,
u64 *data, int data_index)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port_hw_stats *hw_stats;
char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
int i, len;
int err;
err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
if (err)
return;
mlxsw_sp_port_get_stats_raw(dev, grp, prio, ppcnt_pl);
for (i = 0; i < len; i++) {
data[data_index + i] = hw_stats[i].getter(ppcnt_pl);
if (!hw_stats[i].cells_bytes)
continue;
data[data_index + i] = mlxsw_sp_cells_bytes(mlxsw_sp,
data[data_index + i]);
}
}
static void mlxsw_sp_port_get_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
int i, data_index = 0;
/* IEEE 802.3 Counters */
__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT, 0,
data, data_index);
data_index = MLXSW_SP_PORT_HW_STATS_LEN;
/* Per-Priority Counters */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_PRIO_CNT, i,
data, data_index);
data_index += MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
}
/* Per-TC Counters */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_TC_CNT, i,
data, data_index);
data_index += MLXSW_SP_PORT_HW_TC_STATS_LEN;
}
}
static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
default:
return -EOPNOTSUPP;
}
}
struct mlxsw_sp_port_link_mode {
enum ethtool_link_mode_bit_indices mask_ethtool;
u32 mask;
u32 speed;
};
static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
.mask_ethtool = ETHTOOL_LINK_MODE_100baseT_Full_BIT,
.speed = SPEED_100,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
.mask_ethtool = ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
.speed = SPEED_1000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
.mask_ethtool = ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
.speed = SPEED_10000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
.mask_ethtool = ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
.speed = SPEED_10000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
.mask_ethtool = ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
.speed = SPEED_10000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
.mask_ethtool = ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT,
.speed = SPEED_20000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
.mask_ethtool = ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
.speed = SPEED_40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
.mask_ethtool = ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
.speed = SPEED_40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
.mask_ethtool = ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
.speed = SPEED_40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
.mask_ethtool = ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
.speed = SPEED_40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR,
.mask_ethtool = ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
.speed = SPEED_25000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR,
.mask_ethtool = ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
.speed = SPEED_25000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
.mask_ethtool = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
.speed = SPEED_25000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
.mask_ethtool = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
.speed = SPEED_25000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2,
.mask_ethtool = ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT,
.speed = SPEED_50000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
.mask_ethtool = ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT,
.speed = SPEED_50000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_SR2,
.mask_ethtool = ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT,
.speed = SPEED_50000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
.mask_ethtool = ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT,
.speed = SPEED_56000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
.mask_ethtool = ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT,
.speed = SPEED_56000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
.mask_ethtool = ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT,
.speed = SPEED_56000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
.mask_ethtool = ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT,
.speed = SPEED_56000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4,
.mask_ethtool = ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
.speed = SPEED_100000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4,
.mask_ethtool = ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
.speed = SPEED_100000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4,
.mask_ethtool = ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
.speed = SPEED_100000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
.mask_ethtool = ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT,
.speed = SPEED_100000,
},
};
#define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
static void
mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto,
struct ethtool_link_ksettings *cmd)
{
if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
MLXSW_REG_PTYS_ETH_SPEED_SGMII))
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
ethtool_link_ksettings_add_link_mode(cmd, supported, Backplane);
}
static void mlxsw_sp_from_ptys_link(u32 ptys_eth_proto, unsigned long *mode)
{
int i;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
__set_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
mode);
}
}
static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
struct ethtool_link_ksettings *cmd)
{
u32 speed = SPEED_UNKNOWN;
u8 duplex = DUPLEX_UNKNOWN;
int i;
if (!carrier_ok)
goto out;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
speed = mlxsw_sp_port_link_mode[i].speed;
duplex = DUPLEX_FULL;
break;
}
}
out:
cmd->base.speed = speed;
cmd->base.duplex = duplex;
}
static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
{
if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
MLXSW_REG_PTYS_ETH_SPEED_SGMII))
return PORT_FIBRE;
if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
return PORT_DA;
if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
return PORT_NONE;
return PORT_OTHER;
}
static u32
mlxsw_sp_to_ptys_advert_link(const struct ethtool_link_ksettings *cmd)
{
u32 ptys_proto = 0;
int i;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (test_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
cmd->link_modes.advertising))
ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
}
return ptys_proto;
}
static u32 mlxsw_sp_to_ptys_speed(u32 speed)
{
u32 ptys_proto = 0;
int i;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (speed == mlxsw_sp_port_link_mode[i].speed)
ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
}
return ptys_proto;
}
static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
{
u32 ptys_proto = 0;
int i;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
}
return ptys_proto;
}
static void mlxsw_sp_port_get_link_supported(u32 eth_proto_cap,
struct ethtool_link_ksettings *cmd)
{
ethtool_link_ksettings_add_link_mode(cmd, supported, Asym_Pause);
ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
mlxsw_sp_from_ptys_supported_port(eth_proto_cap, cmd);
mlxsw_sp_from_ptys_link(eth_proto_cap, cmd->link_modes.supported);
}
static void mlxsw_sp_port_get_link_advertise(u32 eth_proto_admin, bool autoneg,
struct ethtool_link_ksettings *cmd)
{
if (!autoneg)
return;
ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
mlxsw_sp_from_ptys_link(eth_proto_admin, cmd->link_modes.advertising);
}
static void
mlxsw_sp_port_get_link_lp_advertise(u32 eth_proto_lp, u8 autoneg_status,
struct ethtool_link_ksettings *cmd)
{
if (autoneg_status != MLXSW_REG_PTYS_AN_STATUS_OK || !eth_proto_lp)
return;
ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, Autoneg);
mlxsw_sp_from_ptys_link(eth_proto_lp, cmd->link_modes.lp_advertising);
}
static int mlxsw_sp_port_get_link_ksettings(struct net_device *dev,
struct ethtool_link_ksettings *cmd)
{
u32 eth_proto_cap, eth_proto_admin, eth_proto_oper, eth_proto_lp;
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char ptys_pl[MLXSW_REG_PTYS_LEN];
u8 autoneg_status;
bool autoneg;
int err;
autoneg = mlxsw_sp_port->link.autoneg;
mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
if (err)
return err;
mlxsw_reg_ptys_eth_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin,
&eth_proto_oper);
mlxsw_sp_port_get_link_supported(eth_proto_cap, cmd);
mlxsw_sp_port_get_link_advertise(eth_proto_admin, autoneg, cmd);
eth_proto_lp = mlxsw_reg_ptys_eth_proto_lp_advertise_get(ptys_pl);
autoneg_status = mlxsw_reg_ptys_an_status_get(ptys_pl);
mlxsw_sp_port_get_link_lp_advertise(eth_proto_lp, autoneg_status, cmd);
cmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
cmd->base.port = mlxsw_sp_port_connector_port(eth_proto_oper);
mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev), eth_proto_oper,
cmd);
return 0;
}
static int
mlxsw_sp_port_set_link_ksettings(struct net_device *dev,
const struct ethtool_link_ksettings *cmd)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char ptys_pl[MLXSW_REG_PTYS_LEN];
u32 eth_proto_cap, eth_proto_new;
bool autoneg;
int err;
mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
if (err)
return err;
mlxsw_reg_ptys_eth_unpack(ptys_pl, &eth_proto_cap, NULL, NULL);
autoneg = cmd->base.autoneg == AUTONEG_ENABLE;
eth_proto_new = autoneg ?
mlxsw_sp_to_ptys_advert_link(cmd) :
mlxsw_sp_to_ptys_speed(cmd->base.speed);
eth_proto_new = eth_proto_new & eth_proto_cap;
if (!eth_proto_new) {
netdev_err(dev, "No supported speed requested\n");
return -EINVAL;
}
mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port,
eth_proto_new);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
if (err)
return err;
if (!netif_running(dev))
return 0;
mlxsw_sp_port->link.autoneg = autoneg;
mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
return 0;
}
static int mlxsw_sp_flash_device(struct net_device *dev,
struct ethtool_flash *flash)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
const struct firmware *firmware;
int err;
if (flash->region != ETHTOOL_FLASH_ALL_REGIONS)
return -EOPNOTSUPP;
dev_hold(dev);
rtnl_unlock();
err = request_firmware_direct(&firmware, flash->data, &dev->dev);
if (err)
goto out;
err = mlxsw_sp_firmware_flash(mlxsw_sp, firmware);
release_firmware(firmware);
out:
rtnl_lock();
dev_put(dev);
return err;
}
#define MLXSW_SP_I2C_ADDR_LOW 0x50
#define MLXSW_SP_I2C_ADDR_HIGH 0x51
#define MLXSW_SP_EEPROM_PAGE_LENGTH 256
static int mlxsw_sp_query_module_eeprom(struct mlxsw_sp_port *mlxsw_sp_port,
u16 offset, u16 size, void *data,
unsigned int *p_read_size)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char eeprom_tmp[MLXSW_SP_REG_MCIA_EEPROM_SIZE];
char mcia_pl[MLXSW_REG_MCIA_LEN];
u16 i2c_addr;
int status;
int err;
size = min_t(u16, size, MLXSW_SP_REG_MCIA_EEPROM_SIZE);
if (offset < MLXSW_SP_EEPROM_PAGE_LENGTH &&
offset + size > MLXSW_SP_EEPROM_PAGE_LENGTH)
/* Cross pages read, read until offset 256 in low page */
size = MLXSW_SP_EEPROM_PAGE_LENGTH - offset;
i2c_addr = MLXSW_SP_I2C_ADDR_LOW;
if (offset >= MLXSW_SP_EEPROM_PAGE_LENGTH) {
i2c_addr = MLXSW_SP_I2C_ADDR_HIGH;
offset -= MLXSW_SP_EEPROM_PAGE_LENGTH;
}
mlxsw_reg_mcia_pack(mcia_pl, mlxsw_sp_port->mapping.module,
0, 0, offset, size, i2c_addr);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcia), mcia_pl);
if (err)
return err;
status = mlxsw_reg_mcia_status_get(mcia_pl);
if (status)
return -EIO;
mlxsw_reg_mcia_eeprom_memcpy_from(mcia_pl, eeprom_tmp);
memcpy(data, eeprom_tmp, size);
*p_read_size = size;
return 0;
}
enum mlxsw_sp_eeprom_module_info_rev_id {
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_UNSPC = 0x00,
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8436 = 0x01,
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8636 = 0x03,
};
enum mlxsw_sp_eeprom_module_info_id {
MLXSW_SP_EEPROM_MODULE_INFO_ID_SFP = 0x03,
MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP = 0x0C,
MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP_PLUS = 0x0D,
MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28 = 0x11,
};
enum mlxsw_sp_eeprom_module_info {
MLXSW_SP_EEPROM_MODULE_INFO_ID,
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID,
MLXSW_SP_EEPROM_MODULE_INFO_SIZE,
};
static int mlxsw_sp_get_module_info(struct net_device *netdev,
struct ethtool_modinfo *modinfo)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(netdev);
u8 module_info[MLXSW_SP_EEPROM_MODULE_INFO_SIZE];
u8 module_rev_id, module_id;
unsigned int read_size;
int err;
err = mlxsw_sp_query_module_eeprom(mlxsw_sp_port, 0,
MLXSW_SP_EEPROM_MODULE_INFO_SIZE,
module_info, &read_size);
if (err)
return err;
if (read_size < MLXSW_SP_EEPROM_MODULE_INFO_SIZE)
return -EIO;
module_rev_id = module_info[MLXSW_SP_EEPROM_MODULE_INFO_REV_ID];
module_id = module_info[MLXSW_SP_EEPROM_MODULE_INFO_ID];
switch (module_id) {
case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP:
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
break;
case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP_PLUS:
case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28:
if (module_id == MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28 ||
module_rev_id >= MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8636) {
modinfo->type = ETH_MODULE_SFF_8636;
modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
} else {
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
}
break;
case MLXSW_SP_EEPROM_MODULE_INFO_ID_SFP:
modinfo->type = ETH_MODULE_SFF_8472;
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
break;
default:
return -EINVAL;
}
return 0;
}
static int mlxsw_sp_get_module_eeprom(struct net_device *netdev,
struct ethtool_eeprom *ee,
u8 *data)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(netdev);
int offset = ee->offset;
unsigned int read_size;
int i = 0;
int err;
if (!ee->len)
return -EINVAL;
memset(data, 0, ee->len);
while (i < ee->len) {
err = mlxsw_sp_query_module_eeprom(mlxsw_sp_port, offset,
ee->len - i, data + i,
&read_size);
if (err) {
netdev_err(mlxsw_sp_port->dev, "Eeprom query failed\n");
return err;
}
i += read_size;
offset += read_size;
}
return 0;
}
static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
.get_drvinfo = mlxsw_sp_port_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_pauseparam = mlxsw_sp_port_get_pauseparam,
.set_pauseparam = mlxsw_sp_port_set_pauseparam,
.get_strings = mlxsw_sp_port_get_strings,
.set_phys_id = mlxsw_sp_port_set_phys_id,
.get_ethtool_stats = mlxsw_sp_port_get_stats,
.get_sset_count = mlxsw_sp_port_get_sset_count,
.get_link_ksettings = mlxsw_sp_port_get_link_ksettings,
.set_link_ksettings = mlxsw_sp_port_set_link_ksettings,
.flash_device = mlxsw_sp_flash_device,
.get_module_info = mlxsw_sp_get_module_info,
.get_module_eeprom = mlxsw_sp_get_module_eeprom,
};
static int
mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
char ptys_pl[MLXSW_REG_PTYS_LEN];
u32 eth_proto_admin;
eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
mlxsw_reg_ptys_eth_pack(ptys_pl, mlxsw_sp_port->local_port,
eth_proto_admin);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
}
int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
bool dwrr, u8 dwrr_weight)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qeec_pl[MLXSW_REG_QEEC_LEN];
mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
next_index);
mlxsw_reg_qeec_de_set(qeec_pl, true);
mlxsw_reg_qeec_dwrr_set(qeec_pl, dwrr);
mlxsw_reg_qeec_dwrr_weight_set(qeec_pl, dwrr_weight);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}
int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_qeec_hr hr, u8 index,
u8 next_index, u32 maxrate)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qeec_pl[MLXSW_REG_QEEC_LEN];
mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
next_index);
mlxsw_reg_qeec_mase_set(qeec_pl, true);
mlxsw_reg_qeec_max_shaper_rate_set(qeec_pl, maxrate);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}
int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
u8 switch_prio, u8 tclass)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qtct_pl[MLXSW_REG_QTCT_LEN];
mlxsw_reg_qtct_pack(qtct_pl, mlxsw_sp_port->local_port, switch_prio,
tclass);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtct), qtct_pl);
}
static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
int err, i;
/* Setup the elements hierarcy, so that each TC is linked to
* one subgroup, which are all member in the same group.
*/
err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HIERARCY_GROUP, 0, 0, false,
0);
if (err)
return err;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HIERARCY_SUBGROUP, i,
0, false, 0);
if (err)
return err;
}
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HIERARCY_TC, i, i,
false, 0);
if (err)
return err;
}
/* Make sure the max shaper is disabled in all hierarcies that
* support it.
*/
err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HIERARCY_PORT, 0, 0,
MLXSW_REG_QEEC_MAS_DIS);
if (err)
return err;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
i, 0,
MLXSW_REG_QEEC_MAS_DIS);
if (err)
return err;
}
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HIERARCY_TC,
i, i,
MLXSW_REG_QEEC_MAS_DIS);
if (err)
return err;
}
/* Map all priorities to traffic class 0. */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, 0);
if (err)
return err;
}
return 0;
}
static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
bool split, u8 module, u8 width, u8 lane)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
struct mlxsw_sp_port *mlxsw_sp_port;
struct net_device *dev;
int err;
err = mlxsw_core_port_init(mlxsw_sp->core, local_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
local_port);
return err;
}
dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
if (!dev) {
err = -ENOMEM;
goto err_alloc_etherdev;
}
SET_NETDEV_DEV(dev, mlxsw_sp->bus_info->dev);
mlxsw_sp_port = netdev_priv(dev);
mlxsw_sp_port->dev = dev;
mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
mlxsw_sp_port->local_port = local_port;
mlxsw_sp_port->pvid = 1;
mlxsw_sp_port->split = split;
mlxsw_sp_port->mapping.module = module;
mlxsw_sp_port->mapping.width = width;
mlxsw_sp_port->mapping.lane = lane;
mlxsw_sp_port->link.autoneg = 1;
INIT_LIST_HEAD(&mlxsw_sp_port->vlans_list);
INIT_LIST_HEAD(&mlxsw_sp_port->mall_tc_list);
mlxsw_sp_port->pcpu_stats =
netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
if (!mlxsw_sp_port->pcpu_stats) {
err = -ENOMEM;
goto err_alloc_stats;
}
mlxsw_sp_port->sample = kzalloc(sizeof(*mlxsw_sp_port->sample),
GFP_KERNEL);
if (!mlxsw_sp_port->sample) {
err = -ENOMEM;
goto err_alloc_sample;
}
INIT_DELAYED_WORK(&mlxsw_sp_port->periodic_hw_stats.update_dw,
&update_stats_cache);
dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
err = mlxsw_sp_port_module_map(mlxsw_sp_port, module, width, lane);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to map module\n",
mlxsw_sp_port->local_port);
goto err_port_module_map;
}
err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
mlxsw_sp_port->local_port);
goto err_port_swid_set;
}
err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
mlxsw_sp_port->local_port);
goto err_dev_addr_init;
}
netif_carrier_off(dev);
dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
dev->hw_features |= NETIF_F_HW_TC;
dev->min_mtu = 0;
dev->max_mtu = ETH_MAX_MTU;
/* Each packet needs to have a Tx header (metadata) on top all other
* headers.
*/
dev->needed_headroom = MLXSW_TXHDR_LEN;
err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
mlxsw_sp_port->local_port);
goto err_port_system_port_mapping_set;
}
err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
mlxsw_sp_port->local_port);
goto err_port_speed_by_width_set;
}
err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
mlxsw_sp_port->local_port);
goto err_port_mtu_set;
}
err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
if (err)
goto err_port_admin_status_set;
err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
mlxsw_sp_port->local_port);
goto err_port_buffers_init;
}
err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize ETS\n",
mlxsw_sp_port->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;
}
err = mlxsw_sp_port_fids_init(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize FIDs\n",
mlxsw_sp_port->local_port);
goto err_port_fids_init;
}
err = mlxsw_sp_tc_qdisc_init(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize TC qdiscs\n",
mlxsw_sp_port->local_port);
goto err_port_qdiscs_init;
}
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1);
if (IS_ERR(mlxsw_sp_port_vlan)) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create VID 1\n",
mlxsw_sp_port->local_port);
err = PTR_ERR(mlxsw_sp_port_vlan);
goto err_port_vlan_get;
}
mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
mlxsw_sp->ports[local_port] = mlxsw_sp_port;
err = register_netdev(dev);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
mlxsw_sp_port->local_port);
goto err_register_netdev;
}
mlxsw_core_port_eth_set(mlxsw_sp->core, mlxsw_sp_port->local_port,
mlxsw_sp_port, dev, mlxsw_sp_port->split,
module);
mlxsw_core_schedule_dw(&mlxsw_sp_port->periodic_hw_stats.update_dw, 0);
return 0;
err_register_netdev:
mlxsw_sp->ports[local_port] = NULL;
mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
err_port_vlan_get:
mlxsw_sp_tc_qdisc_fini(mlxsw_sp_port);
err_port_qdiscs_init:
mlxsw_sp_port_fids_fini(mlxsw_sp_port);
err_port_fids_init:
mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
err_port_dcb_init:
err_port_ets_init:
err_port_buffers_init:
err_port_admin_status_set:
err_port_mtu_set:
err_port_speed_by_width_set:
err_port_system_port_mapping_set:
err_dev_addr_init:
mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
err_port_swid_set:
mlxsw_sp_port_module_unmap(mlxsw_sp_port);
err_port_module_map:
kfree(mlxsw_sp_port->sample);
err_alloc_sample:
free_percpu(mlxsw_sp_port->pcpu_stats);
err_alloc_stats:
free_netdev(dev);
err_alloc_etherdev:
mlxsw_core_port_fini(mlxsw_sp->core, local_port);
return err;
}
static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
cancel_delayed_work_sync(&mlxsw_sp_port->periodic_hw_stats.update_dw);
mlxsw_core_port_clear(mlxsw_sp->core, local_port, mlxsw_sp);
unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
mlxsw_sp->ports[local_port] = NULL;
mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
mlxsw_sp_port_vlan_flush(mlxsw_sp_port);
mlxsw_sp_tc_qdisc_fini(mlxsw_sp_port);
mlxsw_sp_port_fids_fini(mlxsw_sp_port);
mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
mlxsw_sp_port_module_unmap(mlxsw_sp_port);
kfree(mlxsw_sp_port->sample);
free_percpu(mlxsw_sp_port->pcpu_stats);
WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vlans_list));
free_netdev(mlxsw_sp_port->dev);
mlxsw_core_port_fini(mlxsw_sp->core, local_port);
}
static bool mlxsw_sp_port_created(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
return mlxsw_sp->ports[local_port] != NULL;
}
static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
{
int i;
for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++)
if (mlxsw_sp_port_created(mlxsw_sp, i))
mlxsw_sp_port_remove(mlxsw_sp, i);
kfree(mlxsw_sp->port_to_module);
kfree(mlxsw_sp->ports);
}
static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
{
unsigned int max_ports = mlxsw_core_max_ports(mlxsw_sp->core);
u8 module, width, lane;
size_t alloc_size;
int i;
int err;
alloc_size = sizeof(struct mlxsw_sp_port *) * max_ports;
mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
if (!mlxsw_sp->ports)
return -ENOMEM;
mlxsw_sp->port_to_module = kmalloc_array(max_ports, sizeof(int),
GFP_KERNEL);
if (!mlxsw_sp->port_to_module) {
err = -ENOMEM;
goto err_port_to_module_alloc;
}
for (i = 1; i < max_ports; i++) {
/* Mark as invalid */
mlxsw_sp->port_to_module[i] = -1;
err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
&width, &lane);
if (err)
goto err_port_module_info_get;
if (!width)
continue;
mlxsw_sp->port_to_module[i] = module;
err = mlxsw_sp_port_create(mlxsw_sp, i, false,
module, width, lane);
if (err)
goto err_port_create;
}
return 0;
err_port_create:
err_port_module_info_get:
for (i--; i >= 1; i--)
if (mlxsw_sp_port_created(mlxsw_sp, i))
mlxsw_sp_port_remove(mlxsw_sp, i);
kfree(mlxsw_sp->port_to_module);
err_port_to_module_alloc:
kfree(mlxsw_sp->ports);
return err;
}
static u8 mlxsw_sp_cluster_base_port_get(u8 local_port)
{
u8 offset = (local_port - 1) % MLXSW_SP_PORTS_PER_CLUSTER_MAX;
return local_port - offset;
}
static int mlxsw_sp_port_split_create(struct mlxsw_sp *mlxsw_sp, u8 base_port,
u8 module, unsigned int count)
{
u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
int err, i;
for (i = 0; i < count; i++) {
err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
module, width, i * width);
if (err)
goto err_port_create;
}
return 0;
err_port_create:
for (i--; i >= 0; i--)
if (mlxsw_sp_port_created(mlxsw_sp, base_port + i))
mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
return err;
}
static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
u8 base_port, unsigned int count)
{
u8 local_port, module, width = MLXSW_PORT_MODULE_MAX_WIDTH;
int i;
/* Split by four means we need to re-create two ports, otherwise
* only one.
*/
count = count / 2;
for (i = 0; i < count; i++) {
local_port = base_port + i * 2;
if (mlxsw_sp->port_to_module[local_port] < 0)
continue;
module = mlxsw_sp->port_to_module[local_port];
mlxsw_sp_port_create(mlxsw_sp, local_port, false, module,
width, 0);
}
}
static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
unsigned int count)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
struct mlxsw_sp_port *mlxsw_sp_port;
u8 module, cur_width, base_port;
int i;
int err;
mlxsw_sp_port = mlxsw_sp->ports[local_port];
if (!mlxsw_sp_port) {
dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
local_port);
return -EINVAL;
}
module = mlxsw_sp_port->mapping.module;
cur_width = mlxsw_sp_port->mapping.width;
if (count != 2 && count != 4) {
netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
return -EINVAL;
}
if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
return -EINVAL;
}
/* Make sure we have enough slave (even) ports for the split. */
if (count == 2) {
base_port = local_port;
if (mlxsw_sp->ports[base_port + 1]) {
netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
return -EINVAL;
}
} else {
base_port = mlxsw_sp_cluster_base_port_get(local_port);
if (mlxsw_sp->ports[base_port + 1] ||
mlxsw_sp->ports[base_port + 3]) {
netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
return -EINVAL;
}
}
for (i = 0; i < count; i++)
if (mlxsw_sp_port_created(mlxsw_sp, base_port + i))
mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
err = mlxsw_sp_port_split_create(mlxsw_sp, base_port, module, count);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to create split ports\n");
goto err_port_split_create;
}
return 0;
err_port_split_create:
mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
return err;
}
static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
struct mlxsw_sp_port *mlxsw_sp_port;
u8 cur_width, base_port;
unsigned int count;
int i;
mlxsw_sp_port = mlxsw_sp->ports[local_port];
if (!mlxsw_sp_port) {
dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
local_port);
return -EINVAL;
}
if (!mlxsw_sp_port->split) {
netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
return -EINVAL;
}
cur_width = mlxsw_sp_port->mapping.width;
count = cur_width == 1 ? 4 : 2;
base_port = mlxsw_sp_cluster_base_port_get(local_port);
/* Determine which ports to remove. */
if (count == 2 && local_port >= base_port + 2)
base_port = base_port + 2;
for (i = 0; i < count; i++)
if (mlxsw_sp_port_created(mlxsw_sp, base_port + i))
mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
return 0;
}
static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
char *pude_pl, void *priv)
{
struct mlxsw_sp *mlxsw_sp = priv;
struct mlxsw_sp_port *mlxsw_sp_port;
enum mlxsw_reg_pude_oper_status status;
u8 local_port;
local_port = mlxsw_reg_pude_local_port_get(pude_pl);
mlxsw_sp_port = mlxsw_sp->ports[local_port];
if (!mlxsw_sp_port)
return;
status = mlxsw_reg_pude_oper_status_get(pude_pl);
if (status == MLXSW_PORT_OPER_STATUS_UP) {
netdev_info(mlxsw_sp_port->dev, "link up\n");
netif_carrier_on(mlxsw_sp_port->dev);
} else {
netdev_info(mlxsw_sp_port->dev, "link down\n");
netif_carrier_off(mlxsw_sp_port->dev);
}
}
static void mlxsw_sp_rx_listener_no_mark_func(struct sk_buff *skb,
u8 local_port, void *priv)
{
struct mlxsw_sp *mlxsw_sp = priv;
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
if (unlikely(!mlxsw_sp_port)) {
dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
local_port);
return;
}
skb->dev = mlxsw_sp_port->dev;
pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
u64_stats_update_begin(&pcpu_stats->syncp);
pcpu_stats->rx_packets++;
pcpu_stats->rx_bytes += skb->len;
u64_stats_update_end(&pcpu_stats->syncp);
skb->protocol = eth_type_trans(skb, skb->dev);
netif_receive_skb(skb);
}
static void mlxsw_sp_rx_listener_mark_func(struct sk_buff *skb, u8 local_port,
void *priv)
{
skb->offload_fwd_mark = 1;
return mlxsw_sp_rx_listener_no_mark_func(skb, local_port, priv);
}
static void mlxsw_sp_rx_listener_mr_mark_func(struct sk_buff *skb,
u8 local_port, void *priv)
{
skb->offload_mr_fwd_mark = 1;
skb->offload_fwd_mark = 1;
return mlxsw_sp_rx_listener_no_mark_func(skb, local_port, priv);
}
static void mlxsw_sp_rx_listener_sample_func(struct sk_buff *skb, u8 local_port,
void *priv)
{
struct mlxsw_sp *mlxsw_sp = priv;
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
struct psample_group *psample_group;
u32 size;
if (unlikely(!mlxsw_sp_port)) {
dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: sample skb received for non-existent port\n",
local_port);
goto out;
}
if (unlikely(!mlxsw_sp_port->sample)) {
dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: sample skb received on unsupported port\n",
local_port);
goto out;
}
size = mlxsw_sp_port->sample->truncate ?
mlxsw_sp_port->sample->trunc_size : skb->len;
rcu_read_lock();
psample_group = rcu_dereference(mlxsw_sp_port->sample->psample_group);
if (!psample_group)
goto out_unlock;
psample_sample_packet(psample_group, skb, size,
mlxsw_sp_port->dev->ifindex, 0,
mlxsw_sp_port->sample->rate);
out_unlock:
rcu_read_unlock();
out:
consume_skb(skb);
}
#define MLXSW_SP_RXL_NO_MARK(_trap_id, _action, _trap_group, _is_ctrl) \
MLXSW_RXL(mlxsw_sp_rx_listener_no_mark_func, _trap_id, _action, \
_is_ctrl, SP_##_trap_group, DISCARD)
#define MLXSW_SP_RXL_MARK(_trap_id, _action, _trap_group, _is_ctrl) \
MLXSW_RXL(mlxsw_sp_rx_listener_mark_func, _trap_id, _action, \
_is_ctrl, SP_##_trap_group, DISCARD)
#define MLXSW_SP_RXL_MR_MARK(_trap_id, _action, _trap_group, _is_ctrl) \
MLXSW_RXL(mlxsw_sp_rx_listener_mr_mark_func, _trap_id, _action, \
_is_ctrl, SP_##_trap_group, DISCARD)
#define MLXSW_SP_EVENTL(_func, _trap_id) \
MLXSW_EVENTL(_func, _trap_id, SP_EVENT)
static const struct mlxsw_listener mlxsw_sp_listener[] = {
/* Events */
MLXSW_SP_EVENTL(mlxsw_sp_pude_event_func, PUDE),
/* L2 traps */
MLXSW_SP_RXL_NO_MARK(STP, TRAP_TO_CPU, STP, true),
MLXSW_SP_RXL_NO_MARK(LACP, TRAP_TO_CPU, LACP, true),
MLXSW_SP_RXL_NO_MARK(LLDP, TRAP_TO_CPU, LLDP, true),
MLXSW_SP_RXL_MARK(DHCP, MIRROR_TO_CPU, DHCP, false),
MLXSW_SP_RXL_MARK(IGMP_QUERY, MIRROR_TO_CPU, IGMP, false),
MLXSW_SP_RXL_NO_MARK(IGMP_V1_REPORT, TRAP_TO_CPU, IGMP, false),
MLXSW_SP_RXL_NO_MARK(IGMP_V2_REPORT, TRAP_TO_CPU, IGMP, false),
MLXSW_SP_RXL_NO_MARK(IGMP_V2_LEAVE, TRAP_TO_CPU, IGMP, false),
MLXSW_SP_RXL_NO_MARK(IGMP_V3_REPORT, TRAP_TO_CPU, IGMP, false),
MLXSW_SP_RXL_MARK(ARPBC, MIRROR_TO_CPU, ARP, false),
MLXSW_SP_RXL_MARK(ARPUC, MIRROR_TO_CPU, ARP, false),
MLXSW_SP_RXL_NO_MARK(FID_MISS, TRAP_TO_CPU, IP2ME, false),
MLXSW_SP_RXL_MARK(IPV6_MLDV12_LISTENER_QUERY, MIRROR_TO_CPU, IPV6_MLD,
false),
MLXSW_SP_RXL_NO_MARK(IPV6_MLDV1_LISTENER_REPORT, TRAP_TO_CPU, IPV6_MLD,
false),
MLXSW_SP_RXL_NO_MARK(IPV6_MLDV1_LISTENER_DONE, TRAP_TO_CPU, IPV6_MLD,
false),
MLXSW_SP_RXL_NO_MARK(IPV6_MLDV2_LISTENER_REPORT, TRAP_TO_CPU, IPV6_MLD,
false),
/* L3 traps */
MLXSW_SP_RXL_MARK(MTUERROR, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(TTLERROR, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(LBERROR, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(IP2ME, TRAP_TO_CPU, IP2ME, false),
MLXSW_SP_RXL_MARK(IPV6_UNSPECIFIED_ADDRESS, TRAP_TO_CPU, ROUTER_EXP,
false),
MLXSW_SP_RXL_MARK(IPV6_LINK_LOCAL_DEST, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(IPV6_LINK_LOCAL_SRC, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(IPV6_ALL_NODES_LINK, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(IPV6_ALL_ROUTERS_LINK, TRAP_TO_CPU, ROUTER_EXP,
false),
MLXSW_SP_RXL_MARK(IPV4_OSPF, TRAP_TO_CPU, OSPF, false),
MLXSW_SP_RXL_MARK(IPV6_OSPF, TRAP_TO_CPU, OSPF, false),
MLXSW_SP_RXL_MARK(IPV6_DHCP, TRAP_TO_CPU, DHCP, false),
MLXSW_SP_RXL_MARK(RTR_INGRESS0, TRAP_TO_CPU, REMOTE_ROUTE, false),
MLXSW_SP_RXL_MARK(IPV4_BGP, TRAP_TO_CPU, BGP, false),
MLXSW_SP_RXL_MARK(IPV6_BGP, TRAP_TO_CPU, BGP, false),
MLXSW_SP_RXL_MARK(L3_IPV6_ROUTER_SOLICITATION, TRAP_TO_CPU, IPV6_ND,
false),
MLXSW_SP_RXL_MARK(L3_IPV6_ROUTER_ADVERTISMENT, TRAP_TO_CPU, IPV6_ND,
false),
MLXSW_SP_RXL_MARK(L3_IPV6_NEIGHBOR_SOLICITATION, TRAP_TO_CPU, IPV6_ND,
false),
MLXSW_SP_RXL_MARK(L3_IPV6_NEIGHBOR_ADVERTISMENT, TRAP_TO_CPU, IPV6_ND,
false),
MLXSW_SP_RXL_MARK(L3_IPV6_REDIRECTION, TRAP_TO_CPU, IPV6_ND, false),
MLXSW_SP_RXL_MARK(IPV6_MC_LINK_LOCAL_DEST, TRAP_TO_CPU, ROUTER_EXP,
false),
MLXSW_SP_RXL_MARK(HOST_MISS_IPV4, TRAP_TO_CPU, HOST_MISS, false),
MLXSW_SP_RXL_MARK(HOST_MISS_IPV6, TRAP_TO_CPU, HOST_MISS, false),
MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV4, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV6, TRAP_TO_CPU, ROUTER_EXP, false),
MLXSW_SP_RXL_MARK(IPIP_DECAP_ERROR, TRAP_TO_CPU, ROUTER_EXP, false),
/* PKT Sample trap */
MLXSW_RXL(mlxsw_sp_rx_listener_sample_func, PKT_SAMPLE, MIRROR_TO_CPU,
false, SP_IP2ME, DISCARD),
/* ACL trap */
MLXSW_SP_RXL_NO_MARK(ACL0, TRAP_TO_CPU, IP2ME, false),
/* Multicast Router Traps */
MLXSW_SP_RXL_MARK(IPV4_PIM, TRAP_TO_CPU, PIM, false),
MLXSW_SP_RXL_MARK(RPF, TRAP_TO_CPU, RPF, false),
MLXSW_SP_RXL_MARK(ACL1, TRAP_TO_CPU, MULTICAST, false),
MLXSW_SP_RXL_MR_MARK(ACL2, TRAP_TO_CPU, MULTICAST, false),
};
static int mlxsw_sp_cpu_policers_set(struct mlxsw_core *mlxsw_core)
{
char qpcr_pl[MLXSW_REG_QPCR_LEN];
enum mlxsw_reg_qpcr_ir_units ir_units;
int max_cpu_policers;
bool is_bytes;
u8 burst_size;
u32 rate;
int i, err;
if (!MLXSW_CORE_RES_VALID(mlxsw_core, MAX_CPU_POLICERS))
return -EIO;
max_cpu_policers = MLXSW_CORE_RES_GET(mlxsw_core, MAX_CPU_POLICERS);
ir_units = MLXSW_REG_QPCR_IR_UNITS_M;
for (i = 0; i < max_cpu_policers; i++) {
is_bytes = false;
switch (i) {
case MLXSW_REG_HTGT_TRAP_GROUP_SP_STP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_LACP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_LLDP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_OSPF:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_PIM:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_RPF:
rate = 128;
burst_size = 7;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IGMP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IPV6_MLD:
rate = 16 * 1024;
burst_size = 10;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_BGP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_ARP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_DHCP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_HOST_MISS:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_ROUTER_EXP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_REMOTE_ROUTE:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IPV6_ND:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_MULTICAST:
rate = 1024;
burst_size = 7;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IP2ME:
is_bytes = true;
rate = 4 * 1024;
burst_size = 4;
break;
default:
continue;
}
mlxsw_reg_qpcr_pack(qpcr_pl, i, ir_units, is_bytes, rate,
burst_size);
err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(qpcr), qpcr_pl);
if (err)
return err;
}
return 0;
}
static int mlxsw_sp_trap_groups_set(struct mlxsw_core *mlxsw_core)
{
char htgt_pl[MLXSW_REG_HTGT_LEN];
enum mlxsw_reg_htgt_trap_group i;
int max_cpu_policers;
int max_trap_groups;
u8 priority, tc;
u16 policer_id;
int err;
if (!MLXSW_CORE_RES_VALID(mlxsw_core, MAX_TRAP_GROUPS))
return -EIO;
max_trap_groups = MLXSW_CORE_RES_GET(mlxsw_core, MAX_TRAP_GROUPS);
max_cpu_policers = MLXSW_CORE_RES_GET(mlxsw_core, MAX_CPU_POLICERS);
for (i = 0; i < max_trap_groups; i++) {
policer_id = i;
switch (i) {
case MLXSW_REG_HTGT_TRAP_GROUP_SP_STP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_LACP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_LLDP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_OSPF:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_PIM:
priority = 5;
tc = 5;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_BGP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_DHCP:
priority = 4;
tc = 4;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IGMP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IP2ME:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IPV6_MLD:
priority = 3;
tc = 3;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_ARP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_IPV6_ND:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_RPF:
priority = 2;
tc = 2;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_HOST_MISS:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_ROUTER_EXP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_REMOTE_ROUTE:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_MULTICAST:
priority = 1;
tc = 1;
break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_EVENT:
priority = MLXSW_REG_HTGT_DEFAULT_PRIORITY;
tc = MLXSW_REG_HTGT_DEFAULT_TC;
policer_id = MLXSW_REG_HTGT_INVALID_POLICER;
break;
default:
continue;
}
if (max_cpu_policers <= policer_id &&
policer_id != MLXSW_REG_HTGT_INVALID_POLICER)
return -EIO;
mlxsw_reg_htgt_pack(htgt_pl, i, policer_id, priority, tc);
err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
if (err)
return err;
}
return 0;
}
static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
{
int i;
int err;
err = mlxsw_sp_cpu_policers_set(mlxsw_sp->core);
if (err)
return err;
err = mlxsw_sp_trap_groups_set(mlxsw_sp->core);
if (err)
return err;
for (i = 0; i < ARRAY_SIZE(mlxsw_sp_listener); i++) {
err = mlxsw_core_trap_register(mlxsw_sp->core,
&mlxsw_sp_listener[i],
mlxsw_sp);
if (err)
goto err_listener_register;
}
return 0;
err_listener_register:
for (i--; i >= 0; i--) {
mlxsw_core_trap_unregister(mlxsw_sp->core,
&mlxsw_sp_listener[i],
mlxsw_sp);
}
return err;
}
static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
{
int i;
for (i = 0; i < ARRAY_SIZE(mlxsw_sp_listener); i++) {
mlxsw_core_trap_unregister(mlxsw_sp->core,
&mlxsw_sp_listener[i],
mlxsw_sp);
}
}
static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
{
char slcr_pl[MLXSW_REG_SLCR_LEN];
int err;
mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
MLXSW_REG_SLCR_LAG_HASH_DMAC |
MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
MLXSW_REG_SLCR_LAG_HASH_VLANID |
MLXSW_REG_SLCR_LAG_HASH_SIP |
MLXSW_REG_SLCR_LAG_HASH_DIP |
MLXSW_REG_SLCR_LAG_HASH_SPORT |
MLXSW_REG_SLCR_LAG_HASH_DPORT |
MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
if (err)
return err;
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG) ||
!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG_MEMBERS))
return -EIO;
mlxsw_sp->lags = kcalloc(MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LAG),
sizeof(struct mlxsw_sp_upper),
GFP_KERNEL);
if (!mlxsw_sp->lags)
return -ENOMEM;
return 0;
}
static void mlxsw_sp_lag_fini(struct mlxsw_sp *mlxsw_sp)
{
kfree(mlxsw_sp->lags);
}
static int mlxsw_sp_basic_trap_groups_set(struct mlxsw_core *mlxsw_core)
{
char htgt_pl[MLXSW_REG_HTGT_LEN];
mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_EMAD,
MLXSW_REG_HTGT_INVALID_POLICER,
MLXSW_REG_HTGT_DEFAULT_PRIORITY,
MLXSW_REG_HTGT_DEFAULT_TC);
return mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
}
static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
unsigned long event, void *ptr);
static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
const struct mlxsw_bus_info *mlxsw_bus_info)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
int err;
mlxsw_sp->core = mlxsw_core;
mlxsw_sp->bus_info = mlxsw_bus_info;
err = mlxsw_sp_fw_rev_validate(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Could not upgrade firmware\n");
return err;
}
err = mlxsw_sp_base_mac_get(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
return err;
}
err = mlxsw_sp_kvdl_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize KVDL\n");
return err;
}
err = mlxsw_sp_fids_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize FIDs\n");
goto err_fids_init;
}
err = mlxsw_sp_traps_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps\n");
goto err_traps_init;
}
err = mlxsw_sp_buffers_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
goto err_buffers_init;
}
err = mlxsw_sp_lag_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
goto err_lag_init;
}
err = mlxsw_sp_switchdev_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
goto err_switchdev_init;
}
err = mlxsw_sp_counter_pool_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to init counter pool\n");
goto err_counter_pool_init;
}
err = mlxsw_sp_afa_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize ACL actions\n");
goto err_afa_init;
}
err = mlxsw_sp_router_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize router\n");
goto err_router_init;
}
/* Initialize netdevice notifier after router is initialized, so that
* the event handler can use router structures.
*/
mlxsw_sp->netdevice_nb.notifier_call = mlxsw_sp_netdevice_event;
err = register_netdevice_notifier(&mlxsw_sp->netdevice_nb);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to register netdev notifier\n");
goto err_netdev_notifier;
}
err = mlxsw_sp_span_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to init span system\n");
goto err_span_init;
}
err = mlxsw_sp_acl_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize ACL\n");
goto err_acl_init;
}
err = mlxsw_sp_dpipe_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to init pipeline debug\n");
goto err_dpipe_init;
}
err = mlxsw_sp_ports_create(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
goto err_ports_create;
}
return 0;
err_ports_create:
mlxsw_sp_dpipe_fini(mlxsw_sp);
err_dpipe_init:
mlxsw_sp_acl_fini(mlxsw_sp);
err_acl_init:
mlxsw_sp_span_fini(mlxsw_sp);
err_span_init:
unregister_netdevice_notifier(&mlxsw_sp->netdevice_nb);
err_netdev_notifier:
mlxsw_sp_router_fini(mlxsw_sp);
err_router_init:
mlxsw_sp_afa_fini(mlxsw_sp);
err_afa_init:
mlxsw_sp_counter_pool_fini(mlxsw_sp);
err_counter_pool_init:
mlxsw_sp_switchdev_fini(mlxsw_sp);
err_switchdev_init:
mlxsw_sp_lag_fini(mlxsw_sp);
err_lag_init:
mlxsw_sp_buffers_fini(mlxsw_sp);
err_buffers_init:
mlxsw_sp_traps_fini(mlxsw_sp);
err_traps_init:
mlxsw_sp_fids_fini(mlxsw_sp);
err_fids_init:
mlxsw_sp_kvdl_fini(mlxsw_sp);
return err;
}
static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
mlxsw_sp_ports_remove(mlxsw_sp);
mlxsw_sp_dpipe_fini(mlxsw_sp);
mlxsw_sp_acl_fini(mlxsw_sp);
mlxsw_sp_span_fini(mlxsw_sp);
unregister_netdevice_notifier(&mlxsw_sp->netdevice_nb);
mlxsw_sp_router_fini(mlxsw_sp);
mlxsw_sp_afa_fini(mlxsw_sp);
mlxsw_sp_counter_pool_fini(mlxsw_sp);
mlxsw_sp_switchdev_fini(mlxsw_sp);
mlxsw_sp_lag_fini(mlxsw_sp);
mlxsw_sp_buffers_fini(mlxsw_sp);
mlxsw_sp_traps_fini(mlxsw_sp);
mlxsw_sp_fids_fini(mlxsw_sp);
mlxsw_sp_kvdl_fini(mlxsw_sp);
}
static const struct mlxsw_config_profile mlxsw_sp_config_profile = {
.used_max_vepa_channels = 1,
.max_vepa_channels = 0,
.used_max_mid = 1,
.max_mid = MLXSW_SP_MID_MAX,
.used_max_pgt = 1,
.max_pgt = 0,
.used_flood_tables = 1,
.used_flood_mode = 1,
.flood_mode = 3,
.max_fid_offset_flood_tables = 3,
.fid_offset_flood_table_size = VLAN_N_VID - 1,
.max_fid_flood_tables = 3,
.fid_flood_table_size = MLXSW_SP_FID_8021D_MAX,
.used_max_ib_mc = 1,
.max_ib_mc = 0,
.used_max_pkey = 1,
.max_pkey = 0,
.used_kvd_split_data = 1,
.kvd_hash_granularity = MLXSW_SP_KVD_GRANULARITY,
.kvd_hash_single_parts = 59,
.kvd_hash_double_parts = 41,
.kvd_linear_size = MLXSW_SP_KVD_LINEAR_SIZE,
.swid_config = {
{
.used_type = 1,
.type = MLXSW_PORT_SWID_TYPE_ETH,
}
},
.resource_query_enable = 1,
};
static struct mlxsw_driver mlxsw_sp_driver = {
.kind = mlxsw_sp_driver_name,
.priv_size = sizeof(struct mlxsw_sp),
.init = mlxsw_sp_init,
.fini = mlxsw_sp_fini,
.basic_trap_groups_set = mlxsw_sp_basic_trap_groups_set,
.port_split = mlxsw_sp_port_split,
.port_unsplit = mlxsw_sp_port_unsplit,
.sb_pool_get = mlxsw_sp_sb_pool_get,
.sb_pool_set = mlxsw_sp_sb_pool_set,
.sb_port_pool_get = mlxsw_sp_sb_port_pool_get,
.sb_port_pool_set = mlxsw_sp_sb_port_pool_set,
.sb_tc_pool_bind_get = mlxsw_sp_sb_tc_pool_bind_get,
.sb_tc_pool_bind_set = mlxsw_sp_sb_tc_pool_bind_set,
.sb_occ_snapshot = mlxsw_sp_sb_occ_snapshot,
.sb_occ_max_clear = mlxsw_sp_sb_occ_max_clear,
.sb_occ_port_pool_get = mlxsw_sp_sb_occ_port_pool_get,
.sb_occ_tc_port_bind_get = mlxsw_sp_sb_occ_tc_port_bind_get,
.txhdr_construct = mlxsw_sp_txhdr_construct,
.txhdr_len = MLXSW_TXHDR_LEN,
.profile = &mlxsw_sp_config_profile,
};
bool mlxsw_sp_port_dev_check(const struct net_device *dev)
{
return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
}
static int mlxsw_sp_lower_dev_walk(struct net_device *lower_dev, void *data)
{
struct mlxsw_sp_port **p_mlxsw_sp_port = data;
int ret = 0;
if (mlxsw_sp_port_dev_check(lower_dev)) {
*p_mlxsw_sp_port = netdev_priv(lower_dev);
ret = 1;
}
return ret;
}
struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find(struct net_device *dev)
{
struct mlxsw_sp_port *mlxsw_sp_port;
if (mlxsw_sp_port_dev_check(dev))
return netdev_priv(dev);
mlxsw_sp_port = NULL;
netdev_walk_all_lower_dev(dev, mlxsw_sp_lower_dev_walk, &mlxsw_sp_port);
return mlxsw_sp_port;
}
struct mlxsw_sp *mlxsw_sp_lower_get(struct net_device *dev)
{
struct mlxsw_sp_port *mlxsw_sp_port;
mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev);
return mlxsw_sp_port ? mlxsw_sp_port->mlxsw_sp : NULL;
}
struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find_rcu(struct net_device *dev)
{
struct mlxsw_sp_port *mlxsw_sp_port;
if (mlxsw_sp_port_dev_check(dev))
return netdev_priv(dev);
mlxsw_sp_port = NULL;
netdev_walk_all_lower_dev_rcu(dev, mlxsw_sp_lower_dev_walk,
&mlxsw_sp_port);
return mlxsw_sp_port;
}
struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev)
{
struct mlxsw_sp_port *mlxsw_sp_port;
rcu_read_lock();
mlxsw_sp_port = mlxsw_sp_port_dev_lower_find_rcu(dev);
if (mlxsw_sp_port)
dev_hold(mlxsw_sp_port->dev);
rcu_read_unlock();
return mlxsw_sp_port;
}
void mlxsw_sp_port_dev_put(struct mlxsw_sp_port *mlxsw_sp_port)
{
dev_put(mlxsw_sp_port->dev);
}
static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
{
char sldr_pl[MLXSW_REG_SLDR_LEN];
mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}
static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
{
char sldr_pl[MLXSW_REG_SLDR_LEN];
mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}
static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id, u8 port_index)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char slcor_pl[MLXSW_REG_SLCOR_LEN];
mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
lag_id, port_index);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}
static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char slcor_pl[MLXSW_REG_SLCOR_LEN];
mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
lag_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}
static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char slcor_pl[MLXSW_REG_SLCOR_LEN];
mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
lag_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}
static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char slcor_pl[MLXSW_REG_SLCOR_LEN];
mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
lag_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}
static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
struct net_device *lag_dev,
u16 *p_lag_id)
{
struct mlxsw_sp_upper *lag;
int free_lag_id = -1;
u64 max_lag;
int i;
max_lag = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LAG);
for (i = 0; i < max_lag; i++) {
lag = mlxsw_sp_lag_get(mlxsw_sp, i);
if (lag->ref_count) {
if (lag->dev == lag_dev) {
*p_lag_id = i;
return 0;
}
} else if (free_lag_id < 0) {
free_lag_id = i;
}
}
if (free_lag_id < 0)
return -EBUSY;
*p_lag_id = free_lag_id;
return 0;
}
static bool
mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
struct net_device *lag_dev,
struct netdev_lag_upper_info *lag_upper_info,
struct netlink_ext_ack *extack)
{
u16 lag_id;
if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0) {
NL_SET_ERR_MSG(extack,
"spectrum: Exceeded number of supported LAG devices");
return false;
}
if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
NL_SET_ERR_MSG(extack,
"spectrum: LAG device using unsupported Tx type");
return false;
}
return true;
}
static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
u16 lag_id, u8 *p_port_index)
{
u64 max_lag_members;
int i;
max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core,
MAX_LAG_MEMBERS);
for (i = 0; i < max_lag_members; i++) {
if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
*p_port_index = i;
return 0;
}
}
return -EBUSY;
}
static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
struct net_device *lag_dev)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
struct mlxsw_sp_upper *lag;
u16 lag_id;
u8 port_index;
int err;
err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
if (err)
return err;
lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
if (!lag->ref_count) {
err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
if (err)
return err;
lag->dev = lag_dev;
}
err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
if (err)
return err;
err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
if (err)
goto err_col_port_add;
err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
if (err)
goto err_col_port_enable;
mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
mlxsw_sp_port->local_port);
mlxsw_sp_port->lag_id = lag_id;
mlxsw_sp_port->lagged = 1;
lag->ref_count++;
/* Port is no longer usable as a router interface */
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1);
if (mlxsw_sp_port_vlan->fid)
mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
return 0;
err_col_port_enable:
mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
err_col_port_add:
if (!lag->ref_count)
mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
return err;
}
static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
struct net_device *lag_dev)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
u16 lag_id = mlxsw_sp_port->lag_id;
struct mlxsw_sp_upper *lag;
if (!mlxsw_sp_port->lagged)
return;
lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
WARN_ON(lag->ref_count == 0);
mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
/* Any VLANs configured on the port are no longer valid */
mlxsw_sp_port_vlan_flush(mlxsw_sp_port);
if (lag->ref_count == 1)
mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
mlxsw_sp_port->local_port);
mlxsw_sp_port->lagged = 0;
lag->ref_count--;
mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1);
/* Make sure untagged frames are allowed to ingress */
mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
}
static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sldr_pl[MLXSW_REG_SLDR_LEN];
mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}
static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
u16 lag_id)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sldr_pl[MLXSW_REG_SLDR_LEN];
mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}
static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool lag_tx_enabled)
{
if (lag_tx_enabled)
return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
mlxsw_sp_port->lag_id);
else
return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
mlxsw_sp_port->lag_id);
}
static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
struct netdev_lag_lower_state_info *info)
{
return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
}
static int mlxsw_sp_port_stp_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool enable)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
enum mlxsw_reg_spms_state spms_state;
char *spms_pl;
u16 vid;
int err;
spms_state = enable ? MLXSW_REG_SPMS_STATE_FORWARDING :
MLXSW_REG_SPMS_STATE_DISCARDING;
spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
if (!spms_pl)
return -ENOMEM;
mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
for (vid = 0; vid < VLAN_N_VID; vid++)
mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
kfree(spms_pl);
return err;
}
static int mlxsw_sp_port_ovs_join(struct mlxsw_sp_port *mlxsw_sp_port)
{
u16 vid = 1;
int err;
err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
if (err)
return err;
err = mlxsw_sp_port_stp_set(mlxsw_sp_port, true);
if (err)
goto err_port_stp_set;
err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, 2, VLAN_N_VID - 1,
true, false);
if (err)
goto err_port_vlan_set;
for (; vid <= VLAN_N_VID - 1; vid++) {
err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port,
vid, false);
if (err)
goto err_vid_learning_set;
}
return 0;
err_vid_learning_set:
for (vid--; vid >= 1; vid--)
mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true);
err_port_vlan_set:
mlxsw_sp_port_stp_set(mlxsw_sp_port, false);
err_port_stp_set:
mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
return err;
}
static void mlxsw_sp_port_ovs_leave(struct mlxsw_sp_port *mlxsw_sp_port)
{
u16 vid;
for (vid = VLAN_N_VID - 1; vid >= 1; vid--)
mlxsw_sp_port_vid_learning_set(mlxsw_sp_port,
vid, true);
mlxsw_sp_port_vlan_set(mlxsw_sp_port, 2, VLAN_N_VID - 1,
false, false);
mlxsw_sp_port_stp_set(mlxsw_sp_port, false);
mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
}
static int mlxsw_sp_netdevice_port_upper_event(struct net_device *lower_dev,
struct net_device *dev,
unsigned long event, void *ptr)
{
struct netdev_notifier_changeupper_info *info;
struct mlxsw_sp_port *mlxsw_sp_port;
struct netlink_ext_ack *extack;
struct net_device *upper_dev;
struct mlxsw_sp *mlxsw_sp;
int err = 0;
mlxsw_sp_port = netdev_priv(dev);
mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
info = ptr;
extack = netdev_notifier_info_to_extack(&info->info);
switch (event) {
case NETDEV_PRECHANGEUPPER:
upper_dev = info->upper_dev;
if (!is_vlan_dev(upper_dev) &&
!netif_is_lag_master(upper_dev) &&
!netif_is_bridge_master(upper_dev) &&
!netif_is_ovs_master(upper_dev)) {
NL_SET_ERR_MSG(extack,
"spectrum: Unknown upper device type");
return -EINVAL;
}
if (!info->linking)
break;
if (netdev_has_any_upper_dev(upper_dev) &&
(!netif_is_bridge_master(upper_dev) ||
!mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp,
upper_dev))) {
NL_SET_ERR_MSG(extack,
"spectrum: Enslaving a port to a device that already has an upper device is not supported");
return -EINVAL;
}
if (netif_is_lag_master(upper_dev) &&
!mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
info->upper_info, extack))
return -EINVAL;
if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev)) {
NL_SET_ERR_MSG(extack,
"spectrum: Master device is a LAG master and this device has a VLAN");
return -EINVAL;
}
if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) &&
!netif_is_lag_master(vlan_dev_real_dev(upper_dev))) {
NL_SET_ERR_MSG(extack,
"spectrum: Can not put a VLAN on a LAG port");
return -EINVAL;
}
if (netif_is_ovs_master(upper_dev) && vlan_uses_dev(dev)) {
NL_SET_ERR_MSG(extack,
"spectrum: Master device is an OVS master and this device has a VLAN");
return -EINVAL;
}
if (netif_is_ovs_port(dev) && is_vlan_dev(upper_dev)) {
NL_SET_ERR_MSG(extack,
"spectrum: Can not put a VLAN on an OVS port");
return -EINVAL;
}
break;
case NETDEV_CHANGEUPPER:
upper_dev = info->upper_dev;
if (netif_is_bridge_master(upper_dev)) {
if (info->linking)
err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
lower_dev,
upper_dev,
extack);
else
mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
lower_dev,
upper_dev);
} else if (netif_is_lag_master(upper_dev)) {
if (info->linking)
err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
upper_dev);
else
mlxsw_sp_port_lag_leave(mlxsw_sp_port,
upper_dev);
} else if (netif_is_ovs_master(upper_dev)) {
if (info->linking)
err = mlxsw_sp_port_ovs_join(mlxsw_sp_port);
else
mlxsw_sp_port_ovs_leave(mlxsw_sp_port);
}
break;
}
return err;
}
static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
unsigned long event, void *ptr)
{
struct netdev_notifier_changelowerstate_info *info;
struct mlxsw_sp_port *mlxsw_sp_port;
int err;
mlxsw_sp_port = netdev_priv(dev);
info = ptr;
switch (event) {
case NETDEV_CHANGELOWERSTATE:
if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
info->lower_state_info);
if (err)
netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
}
break;
}
return 0;
}
static int mlxsw_sp_netdevice_port_event(struct net_device *lower_dev,
struct net_device *port_dev,
unsigned long event, void *ptr)
{
switch (event) {
case NETDEV_PRECHANGEUPPER:
case NETDEV_CHANGEUPPER:
return mlxsw_sp_netdevice_port_upper_event(lower_dev, port_dev,
event, ptr);
case NETDEV_CHANGELOWERSTATE:
return mlxsw_sp_netdevice_port_lower_event(port_dev, event,
ptr);
}
return 0;
}
static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
unsigned long event, void *ptr)
{
struct net_device *dev;
struct list_head *iter;
int ret;
netdev_for_each_lower_dev(lag_dev, dev, iter) {
if (mlxsw_sp_port_dev_check(dev)) {
ret = mlxsw_sp_netdevice_port_event(lag_dev, dev, event,
ptr);
if (ret)
return ret;
}
}
return 0;
}
static int mlxsw_sp_netdevice_port_vlan_event(struct net_device *vlan_dev,
struct net_device *dev,
unsigned long event, void *ptr,
u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct netdev_notifier_changeupper_info *info = ptr;
struct netlink_ext_ack *extack;
struct net_device *upper_dev;
int err = 0;
extack = netdev_notifier_info_to_extack(&info->info);
switch (event) {
case NETDEV_PRECHANGEUPPER:
upper_dev = info->upper_dev;
if (!netif_is_bridge_master(upper_dev)) {
NL_SET_ERR_MSG(extack, "spectrum: VLAN devices only support bridge and VRF uppers");
return -EINVAL;
}
if (!info->linking)
break;
if (netdev_has_any_upper_dev(upper_dev) &&
(!netif_is_bridge_master(upper_dev) ||
!mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp,
upper_dev))) {
NL_SET_ERR_MSG(extack, "spectrum: Enslaving a port to a device that already has an upper device is not supported");
return -EINVAL;
}
break;
case NETDEV_CHANGEUPPER:
upper_dev = info->upper_dev;
if (netif_is_bridge_master(upper_dev)) {
if (info->linking)
err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
vlan_dev,
upper_dev,
extack);
else
mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
vlan_dev,
upper_dev);
} else {
err = -EINVAL;
WARN_ON(1);
}
break;
}
return err;
}
static int mlxsw_sp_netdevice_lag_port_vlan_event(struct net_device *vlan_dev,
struct net_device *lag_dev,
unsigned long event,
void *ptr, u16 vid)
{
struct net_device *dev;
struct list_head *iter;
int ret;
netdev_for_each_lower_dev(lag_dev, dev, iter) {
if (mlxsw_sp_port_dev_check(dev)) {
ret = mlxsw_sp_netdevice_port_vlan_event(vlan_dev, dev,
event, ptr,
vid);
if (ret)
return ret;
}
}
return 0;
}
static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
unsigned long event, void *ptr)
{
struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
u16 vid = vlan_dev_vlan_id(vlan_dev);
if (mlxsw_sp_port_dev_check(real_dev))
return mlxsw_sp_netdevice_port_vlan_event(vlan_dev, real_dev,
event, ptr, vid);
else if (netif_is_lag_master(real_dev))
return mlxsw_sp_netdevice_lag_port_vlan_event(vlan_dev,
real_dev, event,
ptr, vid);
return 0;
}
static bool mlxsw_sp_is_vrf_event(unsigned long event, void *ptr)
{
struct netdev_notifier_changeupper_info *info = ptr;
if (event != NETDEV_PRECHANGEUPPER && event != NETDEV_CHANGEUPPER)
return false;
return netif_is_l3_master(info->upper_dev);
}
static int mlxsw_sp_netdevice_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct mlxsw_sp *mlxsw_sp;
int err = 0;
mlxsw_sp = container_of(nb, struct mlxsw_sp, netdevice_nb);
if (mlxsw_sp_netdev_is_ipip_ol(mlxsw_sp, dev))
err = mlxsw_sp_netdevice_ipip_ol_event(mlxsw_sp, dev,
event, ptr);
else if (mlxsw_sp_netdev_is_ipip_ul(mlxsw_sp, dev))
err = mlxsw_sp_netdevice_ipip_ul_event(mlxsw_sp, dev,
event, ptr);
else if (event == NETDEV_CHANGEADDR || event == NETDEV_CHANGEMTU)
err = mlxsw_sp_netdevice_router_port_event(dev);
else if (mlxsw_sp_is_vrf_event(event, ptr))
err = mlxsw_sp_netdevice_vrf_event(dev, event, ptr);
else if (mlxsw_sp_port_dev_check(dev))
err = mlxsw_sp_netdevice_port_event(dev, dev, event, ptr);
else if (netif_is_lag_master(dev))
err = mlxsw_sp_netdevice_lag_event(dev, event, ptr);
else if (is_vlan_dev(dev))
err = mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
return notifier_from_errno(err);
}
static struct notifier_block mlxsw_sp_inetaddr_valid_nb __read_mostly = {
.notifier_call = mlxsw_sp_inetaddr_valid_event,
};
static struct notifier_block mlxsw_sp_inetaddr_nb __read_mostly = {
.notifier_call = mlxsw_sp_inetaddr_event,
};
static struct notifier_block mlxsw_sp_inet6addr_valid_nb __read_mostly = {
.notifier_call = mlxsw_sp_inet6addr_valid_event,
};
static struct notifier_block mlxsw_sp_inet6addr_nb __read_mostly = {
.notifier_call = mlxsw_sp_inet6addr_event,
};
static const struct pci_device_id mlxsw_sp_pci_id_table[] = {
{PCI_VDEVICE(MELLANOX, PCI_DEVICE_ID_MELLANOX_SPECTRUM), 0},
{0, },
};
static struct pci_driver mlxsw_sp_pci_driver = {
.name = mlxsw_sp_driver_name,
.id_table = mlxsw_sp_pci_id_table,
};
static int __init mlxsw_sp_module_init(void)
{
int err;
register_inetaddr_validator_notifier(&mlxsw_sp_inetaddr_valid_nb);
register_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
register_inet6addr_validator_notifier(&mlxsw_sp_inet6addr_valid_nb);
register_inet6addr_notifier(&mlxsw_sp_inet6addr_nb);
err = mlxsw_core_driver_register(&mlxsw_sp_driver);
if (err)
goto err_core_driver_register;
err = mlxsw_pci_driver_register(&mlxsw_sp_pci_driver);
if (err)
goto err_pci_driver_register;
return 0;
err_pci_driver_register:
mlxsw_core_driver_unregister(&mlxsw_sp_driver);
err_core_driver_register:
unregister_inet6addr_notifier(&mlxsw_sp_inet6addr_nb);
unregister_inet6addr_validator_notifier(&mlxsw_sp_inet6addr_valid_nb);
unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
unregister_inetaddr_validator_notifier(&mlxsw_sp_inetaddr_valid_nb);
return err;
}
static void __exit mlxsw_sp_module_exit(void)
{
mlxsw_pci_driver_unregister(&mlxsw_sp_pci_driver);
mlxsw_core_driver_unregister(&mlxsw_sp_driver);
unregister_inet6addr_notifier(&mlxsw_sp_inet6addr_nb);
unregister_inet6addr_validator_notifier(&mlxsw_sp_inet6addr_valid_nb);
unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
unregister_inetaddr_validator_notifier(&mlxsw_sp_inetaddr_valid_nb);
}
module_init(mlxsw_sp_module_init);
module_exit(mlxsw_sp_module_exit);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
MODULE_DESCRIPTION("Mellanox Spectrum driver");
MODULE_DEVICE_TABLE(pci, mlxsw_sp_pci_id_table);
MODULE_FIRMWARE(MLXSW_SP_FW_FILENAME);
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