mlxsw: spectrum: Add initial support for Spectrum ASIC
Add support for new generation Mellanox Spectrum ASIC, 10/25/40/50 and
100Gb/s Ethernet Switch.
The initial driver implements bridge forwarding offload including
bridge internal VLAN support, FDB static entries, FDB learning and
HW ageing including their setup.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
new file mode 100644
index 0000000..c39b7a1
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -0,0 +1,863 @@
+/*
+ * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.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/types.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.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 <net/switchdev.h>
+
+#include "spectrum.h"
+#include "core.h"
+#include "reg.h"
+
+static int mlxsw_sp_port_attr_get(struct net_device *dev,
+ struct switchdev_attr *attr)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+
+ switch (attr->id) {
+ case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
+ attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
+ memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
+ attr->u.ppid.id_len);
+ break;
+ case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
+ attr->u.brport_flags =
+ (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
+ (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
+ u8 state)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ enum mlxsw_reg_spms_state spms_state;
+ char *spms_pl;
+ u16 vid;
+ int err;
+
+ switch (state) {
+ case BR_STATE_DISABLED: /* fall-through */
+ case BR_STATE_FORWARDING:
+ spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
+ break;
+ case BR_STATE_LISTENING: /* fall-through */
+ case BR_STATE_LEARNING:
+ spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
+ break;
+ case BR_STATE_BLOCKING:
+ spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
+ break;
+ default:
+ BUG();
+ }
+
+ spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
+ if (!spms_pl)
+ return -ENOMEM;
+ mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
+ for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
+ mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
+
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
+ kfree(spms_pl);
+ return err;
+}
+
+static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct switchdev_trans *trans,
+ u8 state)
+{
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ mlxsw_sp_port->stp_state = state;
+ return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
+}
+
+static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct switchdev_trans *trans,
+ unsigned long brport_flags)
+{
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
+ mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
+ return 0;
+}
+
+static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
+{
+ char sfdat_pl[MLXSW_REG_SFDAT_LEN];
+ int err;
+
+ mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
+ if (err)
+ return err;
+ mlxsw_sp->ageing_time = ageing_time;
+ return 0;
+}
+
+static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct switchdev_trans *trans,
+ unsigned long ageing_jiffies)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
+
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
+}
+
+static int mlxsw_sp_port_attr_set(struct net_device *dev,
+ const struct switchdev_attr *attr,
+ struct switchdev_trans *trans)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+ int err = 0;
+
+ switch (attr->id) {
+ case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
+ err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
+ attr->u.stp_state);
+ break;
+ case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
+ err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
+ attr->u.brport_flags);
+ break;
+ case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
+ err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
+ attr->u.ageing_time);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ char spvid_pl[MLXSW_REG_SPVID_LEN];
+
+ mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
+}
+
+static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
+{
+ char sfmr_pl[MLXSW_REG_SFMR_LEN];
+ int err;
+
+ mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
+
+ if (err)
+ return err;
+
+ set_bit(fid, mlxsw_sp->active_fids);
+ return 0;
+}
+
+static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
+{
+ char sfmr_pl[MLXSW_REG_SFMR_LEN];
+
+ clear_bit(fid, mlxsw_sp->active_fids);
+
+ mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
+ fid, fid);
+ mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
+}
+
+static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
+{
+ enum mlxsw_reg_svfa_mt mt;
+
+ if (mlxsw_sp_port->nr_vfids)
+ mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
+ else
+ mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
+
+ return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
+}
+
+static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
+{
+ enum mlxsw_reg_svfa_mt mt;
+
+ if (!mlxsw_sp_port->nr_vfids)
+ return 0;
+
+ mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
+ return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
+}
+
+static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
+ u16 fid, bool set, bool only_uc)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ char *sftr_pl;
+ int err;
+
+ sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
+ if (!sftr_pl)
+ return -ENOMEM;
+
+ mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, fid,
+ MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, 0,
+ mlxsw_sp_port->local_port, set);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
+ if (err)
+ goto buffer_out;
+
+ /* Flooding control allows one to decide whether a given port will
+ * flood unicast traffic for which there is no FDB entry.
+ */
+ if (only_uc)
+ goto buffer_out;
+
+ mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, fid,
+ MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, 0,
+ mlxsw_sp_port->local_port, set);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
+
+buffer_out:
+ kfree(sftr_pl);
+ return err;
+}
+
+static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
+ u16 vid_end)
+{
+ u16 vid;
+ int err;
+
+ for (vid = vid_begin; vid <= vid_end; vid++) {
+ err = mlxsw_sp_port_add_vid(dev, 0, vid);
+ if (err)
+ goto err_port_add_vid;
+ }
+ return 0;
+
+err_port_add_vid:
+ for (vid--; vid >= vid_begin; vid--)
+ mlxsw_sp_port_kill_vid(dev, 0, vid);
+ return err;
+}
+
+static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
+ u16 vid_begin, u16 vid_end,
+ bool flag_untagged, bool flag_pvid)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ struct net_device *dev = mlxsw_sp_port->dev;
+ enum mlxsw_reg_svfa_mt mt;
+ u16 vid, vid_e;
+ int err;
+
+ /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
+ * not bridged, then packets ingressing through the port with
+ * the specified VIDs will be directed to CPU.
+ */
+ if (!mlxsw_sp_port->bridged)
+ return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
+
+ for (vid = vid_begin; vid <= vid_end; vid++) {
+ if (!test_bit(vid, mlxsw_sp->active_fids)) {
+ err = mlxsw_sp_fid_create(mlxsw_sp, vid);
+ if (err) {
+ netdev_err(dev, "Failed to create FID=%d\n",
+ vid);
+ return err;
+ }
+
+ /* When creating a FID, we set a VID to FID mapping
+ * regardless of the port's mode.
+ */
+ mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
+ err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
+ true, vid, vid);
+ if (err) {
+ netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
+ vid);
+ return err;
+ }
+ }
+
+ /* Set FID mapping according to port's mode */
+ err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
+ if (err) {
+ netdev_err(dev, "Failed to map FID=%d", vid);
+ return err;
+ }
+
+ err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, true,
+ false);
+ if (err) {
+ netdev_err(dev, "Failed to set flooding for FID=%d",
+ vid);
+ return err;
+ }
+ }
+
+ for (vid = vid_begin; vid <= vid_end;
+ vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
+ vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
+ vid_end);
+
+ err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e, true,
+ flag_untagged);
+ if (err) {
+ netdev_err(mlxsw_sp_port->dev, "Unable to add VIDs %d-%d\n",
+ vid, vid_e);
+ return err;
+ }
+ }
+
+ vid = vid_begin;
+ if (flag_pvid && mlxsw_sp_port->pvid != vid) {
+ err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
+ if (err) {
+ netdev_err(mlxsw_sp_port->dev, "Unable to add PVID %d\n",
+ vid);
+ return err;
+ }
+ mlxsw_sp_port->pvid = vid;
+ }
+
+ /* Changing activity bits only if HW operation succeded */
+ for (vid = vid_begin; vid <= vid_end; vid++)
+ set_bit(vid, mlxsw_sp_port->active_vlans);
+
+ return mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
+ mlxsw_sp_port->stp_state);
+}
+
+static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct switchdev_trans *trans)
+{
+ bool untagged_flag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+ bool pvid_flag = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
+ vlan->vid_begin, vlan->vid_end,
+ untagged_flag, pvid_flag);
+}
+
+static int mlxsw_sp_port_fdb_op(struct mlxsw_sp_port *mlxsw_sp_port,
+ const char *mac, u16 vid, bool adding,
+ bool dynamic)
+{
+ enum mlxsw_reg_sfd_rec_policy policy;
+ enum mlxsw_reg_sfd_op op;
+ char *sfd_pl;
+ int err;
+
+ if (!vid)
+ vid = mlxsw_sp_port->pvid;
+
+ sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
+ if (!sfd_pl)
+ return -ENOMEM;
+
+ policy = dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
+ MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
+ op = adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
+ MLXSW_REG_SFD_OP_WRITE_REMOVE;
+ mlxsw_reg_sfd_pack(sfd_pl, op, 0);
+ mlxsw_reg_sfd_uc_pack(sfd_pl, 0, policy,
+ mac, vid, MLXSW_REG_SFD_REC_ACTION_NOP,
+ mlxsw_sp_port->local_port);
+ err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(sfd),
+ sfd_pl);
+ kfree(sfd_pl);
+
+ return err;
+}
+
+static int
+mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
+ const struct switchdev_obj_port_fdb *fdb,
+ struct switchdev_trans *trans)
+{
+ if (switchdev_trans_ph_prepare(trans))
+ return 0;
+
+ return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
+ true, false);
+}
+
+static int mlxsw_sp_port_obj_add(struct net_device *dev,
+ const struct switchdev_obj *obj,
+ struct switchdev_trans *trans)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+ int err = 0;
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
+ SWITCHDEV_OBJ_PORT_VLAN(obj),
+ trans);
+ break;
+ case SWITCHDEV_OBJ_ID_PORT_FDB:
+ err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
+ SWITCHDEV_OBJ_PORT_FDB(obj),
+ trans);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
+ u16 vid_end)
+{
+ u16 vid;
+ int err;
+
+ for (vid = vid_begin; vid <= vid_end; vid++) {
+ err = mlxsw_sp_port_kill_vid(dev, 0, vid);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
+ u16 vid_begin, u16 vid_end, bool init)
+{
+ struct net_device *dev = mlxsw_sp_port->dev;
+ u16 vid, vid_e;
+ int err;
+
+ /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
+ * not bridged, then prevent packets ingressing through the
+ * port with the specified VIDs from being trapped to CPU.
+ */
+ if (!init && !mlxsw_sp_port->bridged)
+ return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
+
+ for (vid = vid_begin; vid <= vid_end;
+ vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
+ vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
+ vid_end);
+ err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e, false,
+ false);
+ if (err) {
+ netdev_err(mlxsw_sp_port->dev, "Unable to del VIDs %d-%d\n",
+ vid, vid_e);
+ return err;
+ }
+ }
+
+ if ((mlxsw_sp_port->pvid >= vid_begin) &&
+ (mlxsw_sp_port->pvid <= vid_end)) {
+ /* Default VLAN is always 1 */
+ mlxsw_sp_port->pvid = 1;
+ err = mlxsw_sp_port_pvid_set(mlxsw_sp_port,
+ mlxsw_sp_port->pvid);
+ if (err) {
+ netdev_err(mlxsw_sp_port->dev, "Unable to del PVID %d\n",
+ vid);
+ return err;
+ }
+ }
+
+ if (init)
+ goto out;
+
+ for (vid = vid_begin; vid <= vid_end; vid++) {
+ err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, false,
+ false);
+ if (err) {
+ netdev_err(dev, "Failed to clear flooding for FID=%d",
+ vid);
+ return err;
+ }
+
+ /* Remove FID mapping in case of Virtual mode */
+ err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
+ if (err) {
+ netdev_err(dev, "Failed to unmap FID=%d", vid);
+ return err;
+ }
+ }
+
+out:
+ /* Changing activity bits only if HW operation succeded */
+ for (vid = vid_begin; vid <= vid_end; vid++)
+ clear_bit(vid, mlxsw_sp_port->active_vlans);
+
+ return 0;
+}
+
+static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
+ vlan->vid_begin, vlan->vid_end, false);
+}
+
+static int
+mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
+ const struct switchdev_obj_port_fdb *fdb)
+{
+ return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
+ false, false);
+}
+
+static int mlxsw_sp_port_obj_del(struct net_device *dev,
+ const struct switchdev_obj *obj)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+ int err = 0;
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
+ SWITCHDEV_OBJ_PORT_VLAN(obj));
+ break;
+ case SWITCHDEV_OBJ_ID_PORT_FDB:
+ err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
+ SWITCHDEV_OBJ_PORT_FDB(obj));
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct switchdev_obj_port_fdb *fdb,
+ switchdev_obj_dump_cb_t *cb)
+{
+ char *sfd_pl;
+ char mac[ETH_ALEN];
+ u16 vid;
+ u8 local_port;
+ u8 num_rec;
+ int stored_err = 0;
+ int i;
+ int err;
+
+ sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
+ if (!sfd_pl)
+ return -ENOMEM;
+
+ mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
+ do {
+ mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
+ err = mlxsw_reg_query(mlxsw_sp_port->mlxsw_sp->core,
+ MLXSW_REG(sfd), sfd_pl);
+ if (err)
+ goto out;
+
+ num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
+
+ /* Even in case of error, we have to run the dump to the end
+ * so the session in firmware is finished.
+ */
+ if (stored_err)
+ continue;
+
+ for (i = 0; i < num_rec; i++) {
+ switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
+ case MLXSW_REG_SFD_REC_TYPE_UNICAST:
+ mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &vid,
+ &local_port);
+ if (local_port == mlxsw_sp_port->local_port) {
+ ether_addr_copy(fdb->addr, mac);
+ fdb->ndm_state = NUD_REACHABLE;
+ fdb->vid = vid;
+ err = cb(&fdb->obj);
+ if (err)
+ stored_err = err;
+ }
+ }
+ }
+ } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
+
+out:
+ kfree(sfd_pl);
+ return stored_err ? stored_err : err;
+}
+
+static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct switchdev_obj_port_vlan *vlan,
+ switchdev_obj_dump_cb_t *cb)
+{
+ u16 vid;
+ int err = 0;
+
+ for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
+ vlan->flags = 0;
+ if (vid == mlxsw_sp_port->pvid)
+ vlan->flags |= BRIDGE_VLAN_INFO_PVID;
+ vlan->vid_begin = vid;
+ vlan->vid_end = vid;
+ err = cb(&vlan->obj);
+ if (err)
+ break;
+ }
+ return err;
+}
+
+static int mlxsw_sp_port_obj_dump(struct net_device *dev,
+ struct switchdev_obj *obj,
+ switchdev_obj_dump_cb_t *cb)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+ int err = 0;
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
+ SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
+ break;
+ case SWITCHDEV_OBJ_ID_PORT_FDB:
+ err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
+ SWITCHDEV_OBJ_PORT_FDB(obj), cb);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
+ .switchdev_port_attr_get = mlxsw_sp_port_attr_get,
+ .switchdev_port_attr_set = mlxsw_sp_port_attr_set,
+ .switchdev_port_obj_add = mlxsw_sp_port_obj_add,
+ .switchdev_port_obj_del = mlxsw_sp_port_obj_del,
+ .switchdev_port_obj_dump = mlxsw_sp_port_obj_dump,
+};
+
+static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
+ char *sfn_pl, int rec_index,
+ bool adding)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port;
+ char mac[ETH_ALEN];
+ u8 local_port;
+ u16 vid;
+ int err;
+
+ mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &vid, &local_port);
+ mlxsw_sp_port = mlxsw_sp->ports[local_port];
+ if (!mlxsw_sp_port) {
+ dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
+ return;
+ }
+
+ err = mlxsw_sp_port_fdb_op(mlxsw_sp_port, mac, vid,
+ adding && mlxsw_sp_port->learning, true);
+ if (err) {
+ if (net_ratelimit())
+ netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
+ return;
+ }
+
+ if (mlxsw_sp_port->learning && mlxsw_sp_port->learning_sync) {
+ struct switchdev_notifier_fdb_info info;
+ unsigned long notifier_type;
+
+ info.addr = mac;
+ info.vid = vid;
+ notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
+ call_switchdev_notifiers(notifier_type, mlxsw_sp_port->dev,
+ &info.info);
+ }
+}
+
+static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
+ char *sfn_pl, int rec_index)
+{
+ switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
+ case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
+ mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
+ rec_index, true);
+ break;
+ case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
+ mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
+ rec_index, false);
+ break;
+ }
+}
+
+static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
+{
+ schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
+ msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
+}
+
+static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
+{
+ struct mlxsw_sp *mlxsw_sp;
+ char *sfn_pl;
+ u8 num_rec;
+ int i;
+ int err;
+
+ sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
+ if (!sfn_pl)
+ return;
+
+ mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
+
+ do {
+ mlxsw_reg_sfn_pack(sfn_pl);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
+ if (err) {
+ dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
+ break;
+ }
+ num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
+ for (i = 0; i < num_rec; i++)
+ mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
+
+ } while (num_rec);
+
+ kfree(sfn_pl);
+ mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
+}
+
+static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
+{
+ int err;
+
+ err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
+ if (err) {
+ dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
+ return err;
+ }
+ INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
+ mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
+ mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
+ return 0;
+}
+
+static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
+}
+
+static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ u16 fid;
+
+ for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
+ mlxsw_sp_fid_destroy(mlxsw_sp, fid);
+}
+
+int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
+{
+ return mlxsw_sp_fdb_init(mlxsw_sp);
+}
+
+void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ mlxsw_sp_fdb_fini(mlxsw_sp);
+ mlxsw_sp_fids_fini(mlxsw_sp);
+}
+
+int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+ struct net_device *dev = mlxsw_sp_port->dev;
+ int err;
+
+ /* Allow only untagged packets to ingress and tag them internally
+ * with VID 1.
+ */
+ mlxsw_sp_port->pvid = 1;
+ err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID, true);
+ if (err) {
+ netdev_err(dev, "Unable to init VLANs\n");
+ return 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 configure default vFID\n");
+
+ return err;
+}
+
+void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+ mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
+}
+
+void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+}