/* * drivers/net/ethernet/mellanox/mlxsw/spectrum.c * Copyright (c) 2015 Mellanox Technologies. All rights reserved. * Copyright (c) 2015 Jiri Pirko * Copyright (c) 2015 Ido Schimmel * Copyright (c) 2015 Elad Raz * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 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; } 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_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, 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, .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; mlxsw_sp_port->learning = 1; mlxsw_sp_port->learning_sync = 1; mlxsw_sp_port->uc_flood = 1; mlxsw_sp_port->pvid = 1; bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE); mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL); if (!mlxsw_sp_port->active_vlans) { err = -ENOMEM; goto err_port_active_vlans_alloc; } mlxsw_sp_port->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->active_vlans); err_port_active_vlans_alloc: 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); 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; 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_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; 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_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); 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 = 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 = 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_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_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_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; if (lag->ref_count == 1) { 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_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 (!info->master) break; 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"); 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); } } 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 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); 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 "); MODULE_DESCRIPTION("Mellanox Spectrum driver"); MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);