diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 1949 |
1 files changed, 1949 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c new file mode 100644 index 000000000000..3be4a2355ead --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -0,0 +1,1949 @@ +/* + * 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 <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_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid) +{ + char sfmr_pl[MLXSW_REG_SFMR_LEN]; + int err; + + mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, + MLXSW_SP_VFID_BASE + vfid, 0); + err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl); + + if (err) + return err; + + set_bit(vfid, mlxsw_sp->active_vfids); + return 0; +} + +static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid) +{ + char sfmr_pl[MLXSW_REG_SFMR_LEN]; + + clear_bit(vfid, mlxsw_sp->active_vfids); + + mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, + MLXSW_SP_VFID_BASE + vfid, 0); + mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_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_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 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; +} + +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; + char *sftr_pl; + 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 (test_bit(vid, mlxsw_sp_port->active_vfids)) { + netdev_warn(dev, "VID=%d already configured\n", vid); + return 0; + } + + if (!test_bit(vid, mlxsw_sp->active_vfids)) { + err = mlxsw_sp_vfid_create(mlxsw_sp, vid); + if (err) { + netdev_err(dev, "Failed to create vFID=%d\n", + MLXSW_SP_VFID_BASE + vid); + return err; + } + + sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); + if (!sftr_pl) { + err = -ENOMEM; + goto err_flood_table_alloc; + } + mlxsw_reg_sftr_pack(sftr_pl, 0, vid, + MLXSW_REG_SFGC_TABLE_TYPE_FID, 0, + MLXSW_PORT_CPU_PORT, true); + err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); + kfree(sftr_pl); + if (err) { + netdev_err(dev, "Failed to configure flood table\n"); + goto err_flood_table_config; + } + } + + /* In case we fail in the following steps, we intentionally do not + * destroy the associated vFID. + */ + + /* 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 (!mlxsw_sp_port->nr_vfids) { + err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port); + if (err) { + netdev_err(dev, "Failed to set to Virtual mode\n"); + return err; + } + } + + err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, + MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, + true, MLXSW_SP_VFID_BASE + vid, vid); + if (err) { + netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n", + vid, MLXSW_SP_VFID_BASE + vid); + goto err_port_vid_to_fid_set; + } + + err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, 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_port, 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_port, 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; + } + + mlxsw_sp_port->nr_vfids++; + set_bit(vid, mlxsw_sp_port->active_vfids); + + return 0; + +err_flood_table_config: +err_flood_table_alloc: + mlxsw_sp_vfid_destroy(mlxsw_sp, vid); + return err; + +err_port_stp_state_set: + mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); +err_port_add_vid: + mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); +err_port_vid_learning_set: + mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, + MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false, + MLXSW_SP_VFID_BASE + vid, vid); +err_port_vid_to_fid_set: + mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port); + 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); + 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; + + if (!test_bit(vid, mlxsw_sp_port->active_vfids)) { + netdev_warn(dev, "VID=%d does not exist\n", vid); + return 0; + } + + err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port, 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_port, 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_port, 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_port, + MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, + false, MLXSW_SP_VFID_BASE + vid, + vid); + if (err) { + netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n", + vid, MLXSW_SP_VFID_BASE + vid); + 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 (mlxsw_sp_port->nr_vfids == 1) { + err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port); + if (err) { + netdev_err(dev, "Failed to set to VLAN mode\n"); + return err; + } + } + + mlxsw_sp_port->nr_vfids--; + clear_bit(vid, mlxsw_sp_port->active_vfids); + + 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_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 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, ð_proto_cap, + ð_proto_admin, ð_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, ð_proto_cap, ð_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, + .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; + 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->learning = 1; + mlxsw_sp_port->learning_sync = 1; + mlxsw_sp_port->uc_flood = 1; + mlxsw_sp_port->pvid = 1; + + 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: + free_netdev(dev); + return err; +} + +static void mlxsw_sp_vfids_fini(struct mlxsw_sp *mlxsw_sp) +{ + u16 vfid; + + for_each_set_bit(vfid, mlxsw_sp->active_vfids, VLAN_N_VID) + mlxsw_sp_vfid_destroy(mlxsw_sp, vfid); +} + +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; + mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1); + unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */ + mlxsw_sp_port_switchdev_fini(mlxsw_sp_port); + free_percpu(mlxsw_sp_port->pcpu_stats); + 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; + flood_table = 0; + } 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 non-offloaded netdevs, flood all traffic types to CPU + * port. + */ + 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; + } + + /* For bridged ports, use one flooding table for unknown unicast + * traffic and a second table for unregistered multicast and + * broadcast. + */ + 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_1Q_FID); + if (err) + return err; + } + + return 0; +} + +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; + + 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"); + goto err_ports_create; + } + + 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_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_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); +err_ports_create: + mlxsw_sp_vfids_fini(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); + mlxsw_sp_vfids_fini(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 = 64, + .used_max_port_per_lag = 1, + .max_port_per_lag = 16, + .used_max_mid = 1, + .max_mid = 7000, + .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 = 1, + .fid_flood_table_size = VLAN_N_VID, + .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 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) + netdev_err(dev, "Failed to remove VID 1\n"); + + return err; +} + +static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port) +{ + struct net_device *dev = mlxsw_sp_port->dev; + int err; + + /* Add implicit VLAN interface in the device, so that untagged + * packets will be classified to the default vFID. + */ + err = mlxsw_sp_port_add_vid(dev, 0, 1); + if (err) + netdev_err(dev, "Failed to add VID 1\n"); + + return err; +} + +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_netdevice_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_notifier_info_to_dev(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; + + if (!mlxsw_sp_port_dev_check(dev)) + return NOTIFY_DONE; + + 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; + /* HW limitation forbids to put ports to multiple bridges. */ + if (info->master && info->linking && + netif_is_bridge_master(upper_dev) && + !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev)) + return NOTIFY_BAD; + break; + case NETDEV_CHANGEUPPER: + upper_dev = info->upper_dev; + if (info->master && + 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"); + mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev); + mlxsw_sp_port->bridged = 1; + } else { + err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port); + if (err) + netdev_err(dev, "Failed to leave bridge\n"); + mlxsw_sp_port->bridged = 0; + mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev); + } + } + break; + } + + 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); |