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kernel / pub / scm / linux / kernel / git / ash / linux / 2022d24e2bc03639da2630b7299d723bf88fc487 / . / drivers / net / ethernet / mellanox / mlxsw / spectrum.c
blob: 217856bdd400474d400d1e4e3dd275a096f50db5 [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 <net/switchdev.h>
#include <generated/utsrelease.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 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_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_oper_status_get(struct mlxsw_sp_port *mlxsw_sp_port,
bool *p_is_up)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char paos_pl[MLXSW_REG_PAOS_LEN];
u8 oper_status;
int err;
mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port, 0);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
if (err)
return err;
oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
*p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
return 0;
}
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_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid, enum mlxsw_reg_spms_state state)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char *spms_pl;
int err;
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, state);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
kfree(spms_pl);
return err;
}
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);
}
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);
}
static 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_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_check(struct mlxsw_sp_port *mlxsw_sp_port,
bool *p_usable)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char pmlp_pl[MLXSW_REG_PMLP_LEN];
int err;
mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
if (err)
return err;
*p_usable = mlxsw_reg_pmlp_width_get(pmlp_pl) ? true : false;
return 0;
}
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, &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);
len = skb->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, 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 int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err;
err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
if (err)
return err;
dev->mtu = mtu;
return 0;
}
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);
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 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_vfid *
mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
{
struct mlxsw_sp_vfid *vfid;
list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
if (vfid->vid == vid)
return vfid;
}
return NULL;
}
static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
{
return find_first_zero_bit(mlxsw_sp->port_vfids.mapped,
MLXSW_SP_VFID_PORT_MAX);
}
static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
{
u16 fid = mlxsw_sp_vfid_to_fid(vfid);
char sfmr_pl[MLXSW_REG_SFMR_LEN];
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}
static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
{
u16 fid = mlxsw_sp_vfid_to_fid(vfid);
char sfmr_pl[MLXSW_REG_SFMR_LEN];
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}
static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
u16 vid)
{
struct device *dev = mlxsw_sp->bus_info->dev;
struct mlxsw_sp_vfid *vfid;
u16 n_vfid;
int err;
n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
dev_err(dev, "No available vFIDs\n");
return ERR_PTR(-ERANGE);
}
err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
if (err) {
dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
return ERR_PTR(err);
}
vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
if (!vfid)
goto err_allocate_vfid;
vfid->vfid = n_vfid;
vfid->vid = vid;
list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
return vfid;
err_allocate_vfid:
__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
return ERR_PTR(-ENOMEM);
}
static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_vfid *vfid)
{
clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
list_del(&vfid->list);
__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
kfree(vfid);
}
static struct mlxsw_sp_port *
mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_vfid *vfid)
{
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.vfid = vfid;
mlxsw_sp_vport->vport.vid = vfid->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);
}
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 *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port *mlxsw_sp_vport;
struct mlxsw_sp_vfid *vfid;
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)) {
netdev_warn(dev, "VID=%d already configured\n", vid);
return 0;
}
vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
if (!vfid) {
vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
if (IS_ERR(vfid)) {
netdev_err(dev, "Failed to create vFID for VID=%d\n",
vid);
return PTR_ERR(vfid);
}
}
mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
if (!mlxsw_sp_vport) {
netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
err = -ENOMEM;
goto err_port_vport_create;
}
if (!vfid->nr_vports) {
err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
true, false);
if (err) {
netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
vfid->vfid);
goto err_vport_flood_set;
}
}
/* 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) {
netdev_err(dev, "Failed to set to Virtual mode\n");
goto err_port_vp_mode_trans;
}
}
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
true,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
if (err) {
netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
vid, vfid->vfid);
goto err_port_vid_to_fid_set;
}
err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
if (err) {
netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
goto err_port_vid_learning_set;
}
err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, false);
if (err) {
netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
vid);
goto err_port_add_vid;
}
err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
MLXSW_REG_SPMS_STATE_FORWARDING);
if (err) {
netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
goto err_port_stp_state_set;
}
vfid->nr_vports++;
return 0;
err_port_stp_state_set:
mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
err_port_add_vid:
mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
err_port_vid_learning_set:
mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
err_port_vid_to_fid_set:
if (list_is_singular(&mlxsw_sp_port->vports_list))
mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
err_port_vp_mode_trans:
if (!vfid->nr_vports)
mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
false);
err_vport_flood_set:
mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
err_port_vport_create:
if (!vfid->nr_vports)
mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
return err;
}
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_vfid *vfid;
int err;
/* 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 (!mlxsw_sp_vport) {
netdev_warn(dev, "VID=%d does not exist\n", vid);
return 0;
}
vfid = mlxsw_sp_vport->vport.vfid;
err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
MLXSW_REG_SPMS_STATE_DISCARDING);
if (err) {
netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
return err;
}
err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
if (err) {
netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
vid);
return err;
}
err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
if (err) {
netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
return err;
}
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
false,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
if (err) {
netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
vid, vfid->vfid);
return err;
}
/* 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)) {
err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
if (err) {
netdev_err(dev, "Failed to set to VLAN mode\n");
return err;
}
}
vfid->nr_vports--;
mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
/* Destroy the vFID if no vPorts are assigned to it anymore. */
if (!vfid->nr_vports)
mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
return 0;
}
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_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_vlan_rx_add_vid = mlxsw_sp_port_add_vid,
.ndo_vlan_rx_kill_vid = mlxsw_sp_port_kill_vid,
.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,
};
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));
}
struct mlxsw_sp_port_hw_stats {
char str[ETH_GSTRING_LEN];
u64 (*getter)(char *payload);
};
static const 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 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;
}
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 void mlxsw_sp_port_get_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
int i;
int err;
mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++)
data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0;
}
static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return MLXSW_SP_PORT_HW_STATS_LEN;
default:
return -EOPNOTSUPP;
}
}
struct mlxsw_sp_port_link_mode {
u32 mask;
u32 supported;
u32 advertised;
u32 speed;
};
static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
.supported = SUPPORTED_100baseT_Full,
.advertised = ADVERTISED_100baseT_Full,
.speed = 100,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
.speed = 100,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
.supported = SUPPORTED_1000baseKX_Full,
.advertised = ADVERTISED_1000baseKX_Full,
.speed = 1000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
.supported = SUPPORTED_10000baseT_Full,
.advertised = ADVERTISED_10000baseT_Full,
.speed = 10000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
.supported = SUPPORTED_10000baseKX4_Full,
.advertised = ADVERTISED_10000baseKX4_Full,
.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,
.supported = SUPPORTED_10000baseKR_Full,
.advertised = ADVERTISED_10000baseKR_Full,
.speed = 10000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
.supported = SUPPORTED_20000baseKR2_Full,
.advertised = ADVERTISED_20000baseKR2_Full,
.speed = 20000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
.supported = SUPPORTED_40000baseCR4_Full,
.advertised = ADVERTISED_40000baseCR4_Full,
.speed = 40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
.supported = SUPPORTED_40000baseKR4_Full,
.advertised = ADVERTISED_40000baseKR4_Full,
.speed = 40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
.supported = SUPPORTED_40000baseSR4_Full,
.advertised = ADVERTISED_40000baseSR4_Full,
.speed = 40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
.supported = SUPPORTED_40000baseLR4_Full,
.advertised = ADVERTISED_40000baseLR4_Full,
.speed = 40000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
.speed = 25000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
.speed = 50000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
.supported = SUPPORTED_56000baseKR4_Full,
.advertised = ADVERTISED_56000baseKR4_Full,
.speed = 56000,
},
{
.mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
.speed = 100000,
},
};
#define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
{
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))
return 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))
return SUPPORTED_Backplane;
return 0;
}
static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
{
u32 modes = 0;
int i;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
modes |= mlxsw_sp_port_link_mode[i].supported;
}
return modes;
}
static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
{
u32 modes = 0;
int i;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
modes |= mlxsw_sp_port_link_mode[i].advertised;
}
return modes;
}
static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
struct ethtool_cmd *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:
ethtool_cmd_speed_set(cmd, speed);
cmd->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 int mlxsw_sp_port_get_settings(struct net_device *dev,
struct ethtool_cmd *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;
u32 eth_proto_admin;
u32 eth_proto_oper;
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) {
netdev_err(dev, "Failed to get proto");
return err;
}
mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
&eth_proto_admin, &eth_proto_oper);
cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
SUPPORTED_Pause | SUPPORTED_Asym_Pause;
cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
eth_proto_oper, cmd);
eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
cmd->transceiver = XCVR_INTERNAL;
return 0;
}
static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
{
u32 ptys_proto = 0;
int i;
for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
if (advertising & mlxsw_sp_port_link_mode[i].advertised)
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 int mlxsw_sp_port_set_settings(struct net_device *dev,
struct ethtool_cmd *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 speed;
u32 eth_proto_new;
u32 eth_proto_cap;
u32 eth_proto_admin;
bool is_up;
int err;
speed = ethtool_cmd_speed(cmd);
eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
mlxsw_sp_to_ptys_speed(speed);
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) {
netdev_err(dev, "Failed to get proto");
return err;
}
mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
eth_proto_new = eth_proto_new & eth_proto_cap;
if (!eth_proto_new) {
netdev_err(dev, "Not supported proto admin requested");
return -EINVAL;
}
if (eth_proto_new == eth_proto_admin)
return 0;
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) {
netdev_err(dev, "Failed to set proto admin");
return err;
}
err = mlxsw_sp_port_oper_status_get(mlxsw_sp_port, &is_up);
if (err) {
netdev_err(dev, "Failed to get oper status");
return err;
}
if (!is_up)
return 0;
err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
if (err) {
netdev_err(dev, "Failed to set admin status");
return err;
}
err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
if (err) {
netdev_err(dev, "Failed to set admin status");
return err;
}
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_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_settings = mlxsw_sp_port_get_settings,
.set_settings = mlxsw_sp_port_set_settings,
};
static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
struct mlxsw_sp_port *mlxsw_sp_port;
struct net_device *dev;
bool usable;
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;
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);
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;
}
dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
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;
/* Each packet needs to have a Tx header (metadata) on top all other
* headers.
*/
dev->hard_header_len += MLXSW_TXHDR_LEN;
err = mlxsw_sp_port_module_check(mlxsw_sp_port, &usable);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to check module\n",
mlxsw_sp_port->local_port);
goto err_port_module_check;
}
if (!usable) {
dev_dbg(mlxsw_sp->bus_info->dev, "Port %d: Not usable, skipping initialization\n",
mlxsw_sp_port->local_port);
goto port_not_usable;
}
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_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_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;
}
mlxsw_sp_port_switchdev_init(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_sp_port_vlan_init(mlxsw_sp_port);
if (err)
goto err_port_vlan_init;
mlxsw_sp->ports[local_port] = mlxsw_sp_port;
return 0;
err_port_vlan_init:
unregister_netdev(dev);
err_register_netdev:
err_port_buffers_init:
err_port_admin_status_set:
err_port_mtu_set:
err_port_swid_set:
err_port_system_port_mapping_set:
port_not_usable:
err_port_module_check:
err_dev_addr_init:
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_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct net_device *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
list_for_each_entry_safe(mlxsw_sp_vport, tmp,
&mlxsw_sp_port->vports_list, vport.list) {
u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
/* vPorts created for VLAN devices should already be gone
* by now, since we unregistered the port netdev.
*/
WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
mlxsw_sp_port_kill_vid(dev, 0, vid);
}
}
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;
unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
mlxsw_sp_port_vports_fini(mlxsw_sp_port);
mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
free_percpu(mlxsw_sp_port->pcpu_stats);
kfree(mlxsw_sp_port->untagged_vlans);
kfree(mlxsw_sp_port->active_vlans);
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)
{
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_create(mlxsw_sp, i);
if (err)
goto err_port_create;
}
return 0;
err_port_create:
for (i--; i >= 1; i--)
mlxsw_sp_port_remove(mlxsw_sp, i);
kfree(mlxsw_sp->ports);
return err;
}
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) {
dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
local_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 const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_FDB_MC,
},
/* Traps for specific L2 packet types, not trapped as FDB MC */
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_STP,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_LACP,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_EAPOL,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_LLDP,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_MMRP,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_MVRP,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_RPVST,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_DHCP,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
},
{
.func = mlxsw_sp_rx_listener_func,
.local_port = MLXSW_PORT_DONT_CARE,
.trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
},
};
static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
{
char htgt_pl[MLXSW_REG_HTGT_LEN];
char hpkt_pl[MLXSW_REG_HPKT_LEN];
int i;
int err;
mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
if (err)
return err;
mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
if (err)
return err;
for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
&mlxsw_sp_rx_listener[i],
mlxsw_sp);
if (err)
goto err_rx_listener_register;
mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
mlxsw_sp_rx_listener[i].trap_id);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
if (err)
goto err_rx_trap_set;
}
return 0;
err_rx_trap_set:
mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
&mlxsw_sp_rx_listener[i],
mlxsw_sp);
err_rx_listener_register:
for (i--; i >= 0; i--) {
mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
mlxsw_sp_rx_listener[i].trap_id);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
&mlxsw_sp_rx_listener[i],
mlxsw_sp);
}
return err;
}
static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
{
char hpkt_pl[MLXSW_REG_HPKT_LEN];
int i;
for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
mlxsw_sp_rx_listener[i].trap_id);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
&mlxsw_sp_rx_listener[i],
mlxsw_sp);
}
}
static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
enum mlxsw_reg_sfgc_type type,
enum mlxsw_reg_sfgc_bridge_type bridge_type)
{
enum mlxsw_flood_table_type table_type;
enum mlxsw_sp_flood_table flood_table;
char sfgc_pl[MLXSW_REG_SFGC_LEN];
if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
else
table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
flood_table = MLXSW_SP_FLOOD_TABLE_UC;
else
flood_table = MLXSW_SP_FLOOD_TABLE_BM;
mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
flood_table);
return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
}
static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
{
int type, err;
for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
continue;
err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
if (err)
return err;
err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
if (err)
return err;
}
return 0;
}
static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
{
char slcr_pl[MLXSW_REG_SLCR_LEN];
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);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
}
static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
const struct mlxsw_bus_info *mlxsw_bus_info)
{
struct mlxsw_sp *mlxsw_sp = priv;
int err;
mlxsw_sp->core = mlxsw_core;
mlxsw_sp->bus_info = mlxsw_bus_info;
INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
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_ports_create(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
return err;
}
err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
goto err_event_register;
}
err = mlxsw_sp_traps_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
goto err_rx_listener_register;
}
err = mlxsw_sp_flood_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
goto err_flood_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;
}
return 0;
err_switchdev_init:
err_lag_init:
err_buffers_init:
err_flood_init:
mlxsw_sp_traps_fini(mlxsw_sp);
err_rx_listener_register:
mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
err_event_register:
mlxsw_sp_ports_remove(mlxsw_sp);
return err;
}
static void mlxsw_sp_fini(void *priv)
{
struct mlxsw_sp *mlxsw_sp = priv;
mlxsw_sp_switchdev_fini(mlxsw_sp);
mlxsw_sp_traps_fini(mlxsw_sp);
mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
mlxsw_sp_ports_remove(mlxsw_sp);
}
static struct mlxsw_config_profile mlxsw_sp_config_profile = {
.used_max_vepa_channels = 1,
.max_vepa_channels = 0,
.used_max_lag = 1,
.max_lag = MLXSW_SP_LAG_MAX,
.used_max_port_per_lag = 1,
.max_port_per_lag = MLXSW_SP_PORT_PER_LAG_MAX,
.used_max_mid = 1,
.max_mid = MLXSW_SP_MID_MAX,
.used_max_pgt = 1,
.max_pgt = 0,
.used_max_system_port = 1,
.max_system_port = 64,
.used_max_vlan_groups = 1,
.max_vlan_groups = 127,
.used_max_regions = 1,
.max_regions = 400,
.used_flood_tables = 1,
.used_flood_mode = 1,
.flood_mode = 3,
.max_fid_offset_flood_tables = 2,
.fid_offset_flood_table_size = VLAN_N_VID - 1,
.max_fid_flood_tables = 2,
.fid_flood_table_size = MLXSW_SP_VFID_MAX,
.used_max_ib_mc = 1,
.max_ib_mc = 0,
.used_max_pkey = 1,
.max_pkey = 0,
.swid_config = {
{
.used_type = 1,
.type = MLXSW_PORT_SWID_TYPE_ETH,
}
},
};
static struct mlxsw_driver mlxsw_sp_driver = {
.kind = MLXSW_DEVICE_KIND_SPECTRUM,
.owner = THIS_MODULE,
.priv_size = sizeof(struct mlxsw_sp),
.init = mlxsw_sp_init,
.fini = mlxsw_sp_fini,
.txhdr_construct = mlxsw_sp_txhdr_construct,
.txhdr_len = MLXSW_TXHDR_LEN,
.profile = &mlxsw_sp_config_profile,
};
static int
mlxsw_sp_port_fdb_flush_by_port(const struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sfdf_pl[MLXSW_REG_SFDF_LEN];
mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT);
mlxsw_reg_sfdf_system_port_set(sfdf_pl, mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}
static int
mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sfdf_pl[MLXSW_REG_SFDF_LEN];
mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}
static int
mlxsw_sp_port_fdb_flush_by_lag_id(const struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sfdf_pl[MLXSW_REG_SFDF_LEN];
mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG);
mlxsw_reg_sfdf_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}
static int
mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char sfdf_pl[MLXSW_REG_SFDF_LEN];
mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}
static int
__mlxsw_sp_port_fdb_flush(const struct mlxsw_sp_port *mlxsw_sp_port)
{
int err, last_err = 0;
u16 vid;
for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
err = mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, vid);
if (err)
last_err = err;
}
return last_err;
}
static int
__mlxsw_sp_port_fdb_flush_lagged(const struct mlxsw_sp_port *mlxsw_sp_port)
{
int err, last_err = 0;
u16 vid;
for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
err = mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port, vid);
if (err)
last_err = err;
}
return last_err;
}
static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
{
if (!list_empty(&mlxsw_sp_port->vports_list))
if (mlxsw_sp_port->lagged)
return __mlxsw_sp_port_fdb_flush_lagged(mlxsw_sp_port);
else
return __mlxsw_sp_port_fdb_flush(mlxsw_sp_port);
else
if (mlxsw_sp_port->lagged)
return mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port);
else
return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port);
}
static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport)
{
u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_vport);
u16 fid = mlxsw_sp_vfid_to_fid(vfid);
if (mlxsw_sp_vport->lagged)
return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
fid);
else
return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport, fid);
}
static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
{
return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
}
static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct net_device *dev = mlxsw_sp_port->dev;
int err;
/* When port is not bridged untagged packets are tagged with
* PVID=VID=1, thereby creating an implicit VLAN interface in
* the device. Remove it and let bridge code take care of its
* own VLANs.
*/
err = mlxsw_sp_port_kill_vid(dev, 0, 1);
if (err)
return err;
mlxsw_sp_port->learning = 1;
mlxsw_sp_port->learning_sync = 1;
mlxsw_sp_port->uc_flood = 1;
mlxsw_sp_port->bridged = 1;
return 0;
}
static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
bool flush_fdb)
{
struct net_device *dev = mlxsw_sp_port->dev;
if (flush_fdb && mlxsw_sp_port_fdb_flush(mlxsw_sp_port))
netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
mlxsw_sp_port->learning = 0;
mlxsw_sp_port->learning_sync = 0;
mlxsw_sp_port->uc_flood = 0;
mlxsw_sp_port->bridged = 0;
/* Add implicit VLAN interface in the device, so that untagged
* packets will be classified to the default vFID.
*/
return mlxsw_sp_port_add_vid(dev, 0, 1);
}
static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
struct net_device *br_dev)
{
return !mlxsw_sp->master_bridge.dev ||
mlxsw_sp->master_bridge.dev == br_dev;
}
static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
struct net_device *br_dev)
{
mlxsw_sp->master_bridge.dev = br_dev;
mlxsw_sp->master_bridge.ref_count++;
}
static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
struct net_device *br_dev)
{
if (--mlxsw_sp->master_bridge.ref_count == 0)
mlxsw_sp->master_bridge.dev = NULL;
}
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;
int i;
for (i = 0; i < MLXSW_SP_LAG_MAX; 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)
{
u16 lag_id;
if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
return false;
if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
return false;
return true;
}
static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
u16 lag_id, u8 *p_port_index)
{
int i;
for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; 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_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++;
return 0;
err_col_port_add:
if (!lag->ref_count)
mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
err_col_port_enable:
mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
return err;
}
static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
struct net_device *br_dev,
bool flush_fdb);
static int 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;
struct mlxsw_sp_port *mlxsw_sp_vport;
struct mlxsw_sp_upper *lag;
u16 lag_id = mlxsw_sp_port->lag_id;
int err;
if (!mlxsw_sp_port->lagged)
return 0;
lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
WARN_ON(lag->ref_count == 0);
err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
if (err)
return err;
err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
if (err)
return err;
/* In case we leave a LAG device that has bridges built on top,
* then their teardown sequence is never issued and we need to
* invoke the necessary cleanup routines ourselves.
*/
list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
vport.list) {
struct net_device *br_dev;
if (!mlxsw_sp_vport->bridged)
continue;
br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, false);
}
if (mlxsw_sp_port->bridged) {
mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
if (lag->ref_count == 1)
mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL);
}
if (lag->ref_count == 1) {
if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port))
netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
if (err)
return err;
}
mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
mlxsw_sp_port->local_port);
mlxsw_sp_port->lagged = 0;
lag->ref_count--;
return 0;
}
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_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
struct net_device *vlan_dev)
{
struct mlxsw_sp_port *mlxsw_sp_vport;
u16 vid = vlan_dev_vlan_id(vlan_dev);
mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
if (!mlxsw_sp_vport) {
WARN_ON(!mlxsw_sp_vport);
return -EINVAL;
}
mlxsw_sp_vport->dev = vlan_dev;
return 0;
}
static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
struct net_device *vlan_dev)
{
struct mlxsw_sp_port *mlxsw_sp_vport;
u16 vid = vlan_dev_vlan_id(vlan_dev);
mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
if (!mlxsw_sp_vport) {
WARN_ON(!mlxsw_sp_vport);
return -EINVAL;
}
/* When removing a VLAN device while still bridged we should first
* remove it from the bridge, as we receive the bridge's notification
* when the vPort is already gone.
*/
if (mlxsw_sp_vport->bridged) {
struct net_device *br_dev;
br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, true);
}
mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
return 0;
}
static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
unsigned long event, void *ptr)
{
struct netdev_notifier_changeupper_info *info;
struct mlxsw_sp_port *mlxsw_sp_port;
struct net_device *upper_dev;
struct mlxsw_sp *mlxsw_sp;
int err;
mlxsw_sp_port = netdev_priv(dev);
mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
info = ptr;
switch (event) {
case NETDEV_PRECHANGEUPPER:
upper_dev = info->upper_dev;
if (!info->master || !info->linking)
break;
/* HW limitation forbids to put ports to multiple bridges. */
if (netif_is_bridge_master(upper_dev) &&
!mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
return NOTIFY_BAD;
if (netif_is_lag_master(upper_dev) &&
!mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
info->upper_info))
return NOTIFY_BAD;
break;
case NETDEV_CHANGEUPPER:
upper_dev = info->upper_dev;
if (is_vlan_dev(upper_dev)) {
if (info->linking) {
err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
upper_dev);
if (err) {
netdev_err(dev, "Failed to link VLAN device\n");
return NOTIFY_BAD;
}
} else {
err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
upper_dev);
if (err) {
netdev_err(dev, "Failed to unlink VLAN device\n");
return NOTIFY_BAD;
}
}
} else if (netif_is_bridge_master(upper_dev)) {
if (info->linking) {
err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
if (err) {
netdev_err(dev, "Failed to join bridge\n");
return NOTIFY_BAD;
}
mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
} else {
err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
true);
mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
if (err) {
netdev_err(dev, "Failed to leave bridge\n");
return NOTIFY_BAD;
}
}
} else if (netif_is_lag_master(upper_dev)) {
if (info->linking) {
err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
upper_dev);
if (err) {
netdev_err(dev, "Failed to join link aggregation\n");
return NOTIFY_BAD;
}
} else {
err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
upper_dev);
if (err) {
netdev_err(dev, "Failed to leave link aggregation\n");
return NOTIFY_BAD;
}
}
}
break;
}
return NOTIFY_DONE;
}
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 NOTIFY_DONE;
}
static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
unsigned long event, void *ptr)
{
switch (event) {
case NETDEV_PRECHANGEUPPER:
case NETDEV_CHANGEUPPER:
return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
case NETDEV_CHANGELOWERSTATE:
return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
}
return NOTIFY_DONE;
}
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(dev, event, ptr);
if (ret == NOTIFY_BAD)
return ret;
}
}
return NOTIFY_DONE;
}
static struct mlxsw_sp_vfid *
mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
const struct net_device *br_dev)
{
struct mlxsw_sp_vfid *vfid;
list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
if (vfid->br_dev == br_dev)
return vfid;
}
return NULL;
}
static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
{
return vfid - MLXSW_SP_VFID_PORT_MAX;
}
static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
{
return MLXSW_SP_VFID_PORT_MAX + br_vfid;
}
static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
{
return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
MLXSW_SP_VFID_BR_MAX);
}
static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
struct net_device *br_dev)
{
struct device *dev = mlxsw_sp->bus_info->dev;
struct mlxsw_sp_vfid *vfid;
u16 n_vfid;
int err;
n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
if (n_vfid == MLXSW_SP_VFID_MAX) {
dev_err(dev, "No available vFIDs\n");
return ERR_PTR(-ERANGE);
}
err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
if (err) {
dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
return ERR_PTR(err);
}
vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
if (!vfid)
goto err_allocate_vfid;
vfid->vfid = n_vfid;
vfid->br_dev = br_dev;
list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
return vfid;
err_allocate_vfid:
__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
return ERR_PTR(-ENOMEM);
}
static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_vfid *vfid)
{
u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
list_del(&vfid->list);
__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
kfree(vfid);
}
static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
struct net_device *br_dev,
bool flush_fdb)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
struct net_device *dev = mlxsw_sp_vport->dev;
struct mlxsw_sp_vfid *vfid, *new_vfid;
int err;
vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
if (!vfid) {
WARN_ON(!vfid);
return -EINVAL;
}
/* We need a vFID to go back to after leaving the bridge's vFID. */
new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
if (!new_vfid) {
new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
if (IS_ERR(new_vfid)) {
netdev_err(dev, "Failed to create vFID for VID=%d\n",
vid);
return PTR_ERR(new_vfid);
}
}
/* Invalidate existing {Port, VID} to vFID mapping and create a new
* one for the new vFID.
*/
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
false,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
if (err) {
netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
vfid->vfid);
goto err_port_vid_to_fid_invalidate;
}
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
true,
mlxsw_sp_vfid_to_fid(new_vfid->vfid),
vid);
if (err) {
netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
new_vfid->vfid);
goto err_port_vid_to_fid_validate;
}
err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
if (err) {
netdev_err(dev, "Failed to disable learning\n");
goto err_port_vid_learning_set;
}
err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
false);
if (err) {
netdev_err(dev, "Failed clear to clear flooding\n");
goto err_vport_flood_set;
}
if (flush_fdb && mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport))
netdev_err(dev, "Failed to flush FDB\n");
/* Switch between the vFIDs and destroy the old one if needed. */
new_vfid->nr_vports++;
mlxsw_sp_vport->vport.vfid = new_vfid;
vfid->nr_vports--;
if (!vfid->nr_vports)
mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
mlxsw_sp_vport->learning = 0;
mlxsw_sp_vport->learning_sync = 0;
mlxsw_sp_vport->uc_flood = 0;
mlxsw_sp_vport->bridged = 0;
return 0;
err_vport_flood_set:
err_port_vid_learning_set:
err_port_vid_to_fid_validate:
err_port_vid_to_fid_invalidate:
/* Rollback vFID only if new. */
if (!new_vfid->nr_vports)
mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
return err;
}
static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
struct net_device *br_dev)
{
struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
struct net_device *dev = mlxsw_sp_vport->dev;
struct mlxsw_sp_vfid *vfid;
int err;
vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
if (!vfid) {
vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
if (IS_ERR(vfid)) {
netdev_err(dev, "Failed to create bridge vFID\n");
return PTR_ERR(vfid);
}
}
err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
if (err) {
netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
vfid->vfid);
goto err_port_flood_set;
}
err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
if (err) {
netdev_err(dev, "Failed to enable learning\n");
goto err_port_vid_learning_set;
}
/* We need to invalidate existing {Port, VID} to vFID mapping and
* create a new one for the bridge's vFID.
*/
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
false,
mlxsw_sp_vfid_to_fid(old_vfid->vfid),
vid);
if (err) {
netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
old_vfid->vfid);
goto err_port_vid_to_fid_invalidate;
}
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
true,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
if (err) {
netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
vfid->vfid);
goto err_port_vid_to_fid_validate;
}
/* Switch between the vFIDs and destroy the old one if needed. */
vfid->nr_vports++;
mlxsw_sp_vport->vport.vfid = vfid;
old_vfid->nr_vports--;
if (!old_vfid->nr_vports)
mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
mlxsw_sp_vport->learning = 1;
mlxsw_sp_vport->learning_sync = 1;
mlxsw_sp_vport->uc_flood = 1;
mlxsw_sp_vport->bridged = 1;
return 0;
err_port_vid_to_fid_validate:
mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
err_port_vid_to_fid_invalidate:
mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
err_port_vid_learning_set:
mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
err_port_flood_set:
if (!vfid->nr_vports)
mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
return err;
}
static bool
mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
const struct net_device *br_dev)
{
struct mlxsw_sp_port *mlxsw_sp_vport;
list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
vport.list) {
if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
return false;
}
return true;
}
static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
unsigned long event, void *ptr,
u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct netdev_notifier_changeupper_info *info = ptr;
struct mlxsw_sp_port *mlxsw_sp_vport;
struct net_device *upper_dev;
int err;
mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
switch (event) {
case NETDEV_PRECHANGEUPPER:
upper_dev = info->upper_dev;
if (!info->master || !info->linking)
break;
if (!netif_is_bridge_master(upper_dev))
return NOTIFY_BAD;
/* We can't have multiple VLAN interfaces configured on
* the same port and being members in the same bridge.
*/
if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
upper_dev))
return NOTIFY_BAD;
break;
case NETDEV_CHANGEUPPER:
upper_dev = info->upper_dev;
if (!info->master)
break;
if (info->linking) {
if (!mlxsw_sp_vport) {
WARN_ON(!mlxsw_sp_vport);
return NOTIFY_BAD;
}
err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
upper_dev);
if (err) {
netdev_err(dev, "Failed to join bridge\n");
return NOTIFY_BAD;
}
} else {
/* We ignore bridge's unlinking notifications if vPort
* is gone, since we already left the bridge when the
* VLAN device was unlinked from the real device.
*/
if (!mlxsw_sp_vport)
return NOTIFY_DONE;
err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
upper_dev, true);
if (err) {
netdev_err(dev, "Failed to leave bridge\n");
return NOTIFY_BAD;
}
}
}
return NOTIFY_DONE;
}
static int mlxsw_sp_netdevice_lag_vport_event(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_vport_event(dev, event, ptr,
vid);
if (ret == NOTIFY_BAD)
return ret;
}
}
return NOTIFY_DONE;
}
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_vport_event(real_dev, event, ptr,
vid);
else if (netif_is_lag_master(real_dev))
return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
vid);
return NOTIFY_DONE;
}
static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
if (mlxsw_sp_port_dev_check(dev))
return mlxsw_sp_netdevice_port_event(dev, event, ptr);
if (netif_is_lag_master(dev))
return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
if (is_vlan_dev(dev))
return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
return NOTIFY_DONE;
}
static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
.notifier_call = mlxsw_sp_netdevice_event,
};
static int __init mlxsw_sp_module_init(void)
{
int err;
register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
err = mlxsw_core_driver_register(&mlxsw_sp_driver);
if (err)
goto err_core_driver_register;
return 0;
err_core_driver_register:
unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
return err;
}
static void __exit mlxsw_sp_module_exit(void)
{
mlxsw_core_driver_unregister(&mlxsw_sp_driver);
unregister_netdevice_notifier(&mlxsw_sp_netdevice_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_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);