blob: dda5761e91bcbe27738cafd79d73e5a25f1f8b66 [file] [log] [blame]
/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum.c
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
* Copyright (c) 2015 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/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 <net/switchdev.h>
#include <generated/utsrelease.h>
#include <net/pkt_cls.h>
#include <net/tc_act/tc_mirred.h>
#include <net/netevent.h>
#include "spectrum.h"
#include "core.h"
#include "reg.h"
#include "port.h"
#include "trap.h"
#include "txheader.h"
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);
static bool mlxsw_sp_port_dev_check(const struct net_device *dev);
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);
}
static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
{
char spad_pl[MLXSW_REG_SPAD_LEN];
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)
{
struct mlxsw_resources *resources;
int i;
resources = mlxsw_core_resources_get(mlxsw_sp->core);
if (!resources->max_span_valid)
return -EIO;
mlxsw_sp->span.entries_count = resources->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_port *port)
{
struct mlxsw_sp *mlxsw_sp = port->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];
if (curr->used && curr->local_port == 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);
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(int mtu)
{
return MLXSW_SP_BYTES_TO_CELLS(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)) {
mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
mlxsw_sp_span_mtu_to_buffsize(mtu));
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) {
mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
mlxsw_sp_span_mtu_to_buffsize(port->dev->mtu));
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,
struct mlxsw_sp_port *to,
enum mlxsw_sp_span_type type)
{
struct mlxsw_sp_span_entry *span_entry;
span_entry = mlxsw_sp_span_entry_find(to);
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_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 *mlxsw_sp, u8 local_port,
u8 swid)
{
char pspa_pl[MLXSW_REG_PSPA_LEN];
mlxsw_reg_pspa_pack(pspa_pl, swid, local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_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;
return __mlxsw_sp_port_swid_set(mlxsw_sp, mlxsw_sp_port->local_port,
swid);
}
static 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_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
u16 vid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char svfa_pl[MLXSW_REG_SVFA_LEN];
mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
fid, vid);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
}
int __mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid_begin, u16 vid_end,
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_begin,
vid_end, learn_enable);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
kfree(spvmlr_pl);
return err;
}
static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid, bool learn_enable)
{
return __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
learn_enable);
}
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 *mlxsw_sp, u8 local_port,
u8 module, u8 width, u8 lane)
{
char pmlp_pl[MLXSW_REG_PMLP_LEN];
int i;
mlxsw_reg_pmlp_pack(pmlp_pl, 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 *mlxsw_sp, u8 local_port)
{
char pmlp_pl[MLXSW_REG_PMLP_LEN];
mlxsw_reg_pmlp_pack(pmlp_pl, 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;
}
}
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 void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int pg_index, int mtu,
bool pause_en, bool pfc_en, u16 delay)
{
u16 pg_size = 2 * MLXSW_SP_BYTES_TO_CELLS(mtu);
delay = pfc_en ? mlxsw_sp_pfc_delay_get(mtu, delay) :
MLXSW_SP_PAUSE_DELAY;
if (pause_en || pfc_en)
mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, pg_index,
pg_size + delay, pg_size);
else
mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pg_index, pg_size);
}
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;
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;
mlxsw_sp_pg_buf_pack(pbmc_pl, i, mtu, pause_en, pfc, delay);
}
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(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 update_stats_cache(struct work_struct *work)
{
struct mlxsw_sp_port *mlxsw_sp_port =
container_of(work, struct mlxsw_sp_port,
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->hw_stats.cache);
out:
mlxsw_core_schedule_dw(&mlxsw_sp_port->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 struct rtnl_link_stats64 *
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->hw_stats.cache, sizeof(*stats));
return stats;
}
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;
}
static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
{
enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
u16 vid, last_visited_vid;
int err;
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
vid);
if (err) {
last_visited_vid = vid;
goto err_port_vid_to_fid_set;
}
}
err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
if (err) {
last_visited_vid = VLAN_N_VID;
goto err_port_vid_to_fid_set;
}
return 0;
err_port_vid_to_fid_set:
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
vid);
return err;
}
static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
{
enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
u16 vid;
int err;
err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
if (err)
return err;
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
vid, vid);
if (err)
return err;
}
return 0;
}
static struct mlxsw_sp_port *
mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_vport;
mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
if (!mlxsw_sp_vport)
return NULL;
/* dev will be set correctly after the VLAN device is linked
* with the real device. In case of bridge SELF invocation, dev
* will remain as is.
*/
mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
mlxsw_sp_vport->vport.vid = vid;
list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
return mlxsw_sp_vport;
}
static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
{
list_del(&mlxsw_sp_vport->vport.list);
kfree(mlxsw_sp_vport);
}
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);
struct mlxsw_sp_port *mlxsw_sp_vport;
bool untagged = vid == 1;
int err;
/* 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;
if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid))
return 0;
mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
if (!mlxsw_sp_vport)
return -ENOMEM;
/* When adding the first VLAN interface on a bridged port we need to
* transition all the active 802.1Q bridge VLANs to use explicit
* {Port, VID} to FID mappings and set the port's mode to Virtual mode.
*/
if (list_is_singular(&mlxsw_sp_port->vports_list)) {
err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
if (err)
goto err_port_vp_mode_trans;
}
err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, untagged);
if (err)
goto err_port_add_vid;
return 0;
err_port_add_vid:
if (list_is_singular(&mlxsw_sp_port->vports_list))
mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
err_port_vp_mode_trans:
mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
return err;
}
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 *mlxsw_sp_vport;
struct mlxsw_sp_fid *f;
/* 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_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
if (WARN_ON(!mlxsw_sp_vport))
return 0;
mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
/* Drop FID reference. If this was the last reference the
* resources will be freed.
*/
f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
if (f && !WARN_ON(!f->leave))
f->leave(mlxsw_sp_vport);
/* When removing the last VLAN interface on a bridged port we need to
* transition all active 802.1Q bridge VLANs to use VID to FID
* mappings and set port's mode to VLAN mode.
*/
if (list_is_singular(&mlxsw_sp_port->vports_list))
mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
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_mirror_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 tc_cls_matchall_offload *cls,
const struct tc_action *a,
bool ingress)
{
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
struct net *net = dev_net(mlxsw_sp_port->dev);
enum mlxsw_sp_span_type span_type;
struct mlxsw_sp_port *to_port;
struct net_device *to_dev;
int ifindex;
int err;
ifindex = tcf_mirred_ifindex(a);
to_dev = __dev_get_by_index(net, ifindex);
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 -ENOTSUPP;
}
to_port = netdev_priv(to_dev);
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
if (!mall_tc_entry)
return -ENOMEM;
mall_tc_entry->cookie = cls->cookie;
mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
mall_tc_entry->mirror.to_local_port = to_port->local_port;
mall_tc_entry->mirror.ingress = ingress;
list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
err = mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
if (err)
goto err_mirror_add;
return 0;
err_mirror_add:
list_del(&mall_tc_entry->list);
kfree(mall_tc_entry);
return err;
}
static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
__be16 protocol,
struct tc_cls_matchall_offload *cls,
bool ingress)
{
const struct tc_action *a;
LIST_HEAD(actions);
int err;
if (!tc_single_action(cls->exts)) {
netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
return -ENOTSUPP;
}
tcf_exts_to_list(cls->exts, &actions);
list_for_each_entry(a, &actions, list) {
if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))
return -ENOTSUPP;
err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
a, ingress);
if (err)
return err;
}
return 0;
}
static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_cls_matchall_offload *cls)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
enum mlxsw_sp_span_type span_type;
struct mlxsw_sp_port *to_port;
mall_tc_entry = mlxsw_sp_port_mirror_entry_find(mlxsw_sp_port,
cls->cookie);
if (!mall_tc_entry) {
netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
return;
}
switch (mall_tc_entry->type) {
case MLXSW_SP_PORT_MALL_MIRROR:
to_port = mlxsw_sp->ports[mall_tc_entry->mirror.to_local_port];
span_type = mall_tc_entry->mirror.ingress ?
MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
break;
default:
WARN_ON(1);
}
list_del(&mall_tc_entry->list);
kfree(mall_tc_entry);
}
static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
__be16 proto, struct tc_to_netdev *tc)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
bool ingress = TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS);
if (tc->type == TC_SETUP_MATCHALL) {
switch (tc->cls_mall->command) {
case TC_CLSMATCHALL_REPLACE:
return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port,
proto,
tc->cls_mall,
ingress);
case TC_CLSMATCHALL_DESTROY:
mlxsw_sp_port_del_cls_matchall(mlxsw_sp_port,
tc->cls_mall);
return 0;
default:
return -EINVAL;
}
}
return -ENOTSUPP;
}
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_neigh_construct = mlxsw_sp_router_neigh_construct,
.ndo_neigh_destroy = mlxsw_sp_router_neigh_destroy,
.ndo_fdb_add = switchdev_port_fdb_add,
.ndo_fdb_del = switchdev_port_fdb_del,
.ndo_fdb_dump = switchdev_port_fdb_dump,
.ndo_bridge_setlink = switchdev_port_bridge_setlink,
.ndo_bridge_getlink = switchdev_port_bridge_getlink,
.ndo_bridge_dellink = switchdev_port_bridge_dellink,
.ndo_get_phys_port_name = mlxsw_sp_port_get_phys_port_name,
};
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)(char *payload);
};
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 u64 mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get(char *ppcnt_pl)
{
u64 transmit_queue = mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);
return MLXSW_SP_CELLS_TO_BYTES(transmit_queue);
}
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_bytes_get,
},
{
.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 -ENOTSUPP;
}
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_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);
}
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_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_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_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_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_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 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,
};
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_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_pvid_vport_create(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port->pvid = 1;
return mlxsw_sp_port_add_vid(mlxsw_sp_port->dev, 0, 1);
}
static int mlxsw_sp_port_pvid_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_port)
{
return mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
}
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 *mlxsw_sp_port;
struct net_device *dev;
size_t bytes;
int err;
dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
if (!dev)
return -ENOMEM;
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->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;
bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
if (!mlxsw_sp_port->active_vlans) {
err = -ENOMEM;
goto err_port_active_vlans_alloc;
}
mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
if (!mlxsw_sp_port->untagged_vlans) {
err = -ENOMEM;
goto err_port_untagged_vlans_alloc;
}
INIT_LIST_HEAD(&mlxsw_sp_port->vports_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->hw_stats.cache =
kzalloc(sizeof(*mlxsw_sp_port->hw_stats.cache), GFP_KERNEL);
if (!mlxsw_sp_port->hw_stats.cache) {
err = -ENOMEM;
goto err_alloc_hw_stats;
}
INIT_DELAYED_WORK(&mlxsw_sp_port->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_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;
/* 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_pvid_vport_create(mlxsw_sp_port);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create PVID vPort\n",
mlxsw_sp_port->local_port);
goto err_port_pvid_vport_create;
}
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;
}
err = mlxsw_core_port_init(mlxsw_sp->core, &mlxsw_sp_port->core_port,
mlxsw_sp_port->local_port, dev,
mlxsw_sp_port->split, module);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
mlxsw_sp_port->local_port);
goto err_core_port_init;
}
mlxsw_core_schedule_dw(&mlxsw_sp_port->hw_stats.update_dw, 0);
return 0;
err_core_port_init:
unregister_netdev(dev);
err_register_netdev:
mlxsw_sp->ports[local_port] = NULL;
mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
err_port_pvid_vport_create:
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:
kfree(mlxsw_sp_port->hw_stats.cache);
err_alloc_hw_stats:
free_percpu(mlxsw_sp_port->pcpu_stats);
err_alloc_stats:
kfree(mlxsw_sp_port->untagged_vlans);
err_port_untagged_vlans_alloc:
kfree(mlxsw_sp_port->active_vlans);
err_port_active_vlans_alloc:
free_netdev(dev);
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];
if (!mlxsw_sp_port)
return;
cancel_delayed_work_sync(&mlxsw_sp_port->hw_stats.update_dw);
mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
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_pvid_vport_destroy(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, mlxsw_sp_port->local_port);
free_percpu(mlxsw_sp_port->pcpu_stats);
kfree(mlxsw_sp_port->hw_stats.cache);
kfree(mlxsw_sp_port->untagged_vlans);
kfree(mlxsw_sp_port->active_vlans);
WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
free_netdev(mlxsw_sp_port->dev);
}
static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
{
int i;
for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
mlxsw_sp_port_remove(mlxsw_sp, i);
kfree(mlxsw_sp->ports);
}
static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
{
u8 module, width, lane;
size_t alloc_size;
int i;
int err;
alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
if (!mlxsw_sp->ports)
return -ENOMEM;
for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
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--)
mlxsw_sp_port_remove(mlxsw_sp, i);
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_module_map(mlxsw_sp, base_port + i, module,
width, i * width);
if (err)
goto err_port_module_map;
}
for (i = 0; i < count; i++) {
err = __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i, 0);
if (err)
goto err_port_swid_set;
}
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--)
mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
i = count;
err_port_swid_set:
for (i--; i >= 0; i--)
__mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i,
MLXSW_PORT_SWID_DISABLED_PORT);
i = count;
err_port_module_map:
for (i--; i >= 0; i--)
mlxsw_sp_port_module_unmap(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;
module = mlxsw_sp->port_to_module[local_port];
mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
0);
}
for (i = 0; i < count; i++)
__mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i * 2, 0);
for (i = 0; i < count; i++) {
local_port = base_port + i * 2;
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++)
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++)
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 struct mlxsw_event_listener mlxsw_sp_pude_event = {
.func = mlxsw_sp_pude_event_func,
.trap_id = MLXSW_TRAP_ID_PUDE,
};
static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_event_trap_id trap_id)
{
struct mlxsw_event_listener *el;
char hpkt_pl[MLXSW_REG_HPKT_LEN];
int err;
switch (trap_id) {
case MLXSW_TRAP_ID_PUDE:
el = &mlxsw_sp_pude_event;
break;
}
err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
if (err)
return err;
mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
if (err)
goto err_event_trap_set;
return 0;
err_event_trap_set:
mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
return err;
}
static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_event_trap_id trap_id)
{
struct mlxsw_event_listener *el;
switch (trap_id) {
case MLXSW_TRAP_ID_PUDE:
el = &mlxsw_sp_pude_event;
break;
}
mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
}
static void mlxsw_sp_rx_listener_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_func(skb, local_port, priv);
}
#define MLXSW_SP_RXL(_func, _trap_id, _action) \
{ \
.func = _func, \
.local_port = MLXSW_PORT_DONT_CARE, \
.trap_id = MLXSW_TRAP_ID_##_trap_id, \
.action = MLXSW_REG_HPKT_ACTION_##_action, \
}
static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, FDB_MC, TRAP_TO_CPU),
/* Traps for specific L2 packet types, not trapped as FDB MC */
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, STP, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LACP, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, EAPOL, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LLDP, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MMRP, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MVRP, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, RPVST, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, DHCP, MIRROR_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, IGMP_QUERY, MIRROR_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V1_REPORT, TRAP_TO_CPU),
MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V2_REPORT, TRAP_TO_CPU),