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Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001/*
2 * net/dsa/slave.c - Slave device handling
Lennert Buytenheke84665c2009-03-20 09:52:09 +00003 * Copyright (c) 2008-2009 Marvell Semiconductor
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00004 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10
11#include <linux/list.h>
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -080012#include <linux/etherdevice.h>
Florian Fainellib73adef2015-02-24 13:15:33 -080013#include <linux/netdevice.h>
Lennert Buytenhek91da11f2008-10-07 13:44:02 +000014#include <linux/phy.h>
Florian Fainellia2820542014-10-17 16:02:13 -070015#include <linux/phy_fixed.h>
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -070016#include <linux/of_net.h>
17#include <linux/of_mdio.h>
Andrew Lunn7f854422016-01-06 20:11:18 +010018#include <linux/mdio.h>
Florian Fainellib73adef2015-02-24 13:15:33 -080019#include <net/rtnetlink.h>
Scott Feldman98237d42015-03-15 21:07:15 -070020#include <net/switchdev.h>
Florian Fainellib73adef2015-02-24 13:15:33 -080021#include <linux/if_bridge.h>
Florian Fainelli04ff53f2015-07-31 11:42:57 -070022#include <linux/netpoll.h>
Lennert Buytenhek91da11f2008-10-07 13:44:02 +000023#include "dsa_priv.h"
24
25/* slave mii_bus handling ***************************************************/
26static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
27{
28 struct dsa_switch *ds = bus->priv;
29
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -070030 if (ds->phys_mii_mask & (1 << addr))
Vivien Didelot9d490b42016-08-23 12:38:56 -040031 return ds->ops->phy_read(ds, addr, reg);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +000032
33 return 0xffff;
34}
35
36static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
37{
38 struct dsa_switch *ds = bus->priv;
39
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -070040 if (ds->phys_mii_mask & (1 << addr))
Vivien Didelot9d490b42016-08-23 12:38:56 -040041 return ds->ops->phy_write(ds, addr, reg, val);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +000042
43 return 0;
44}
45
46void dsa_slave_mii_bus_init(struct dsa_switch *ds)
47{
48 ds->slave_mii_bus->priv = (void *)ds;
49 ds->slave_mii_bus->name = "dsa slave smi";
50 ds->slave_mii_bus->read = dsa_slave_phy_read;
51 ds->slave_mii_bus->write = dsa_slave_phy_write;
Florian Fainelli0b7b4982016-06-07 16:32:38 -070052 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d",
53 ds->dst->tree, ds->index);
Andrew Lunnc33063d2016-05-10 23:27:23 +020054 ds->slave_mii_bus->parent = ds->dev;
Vivien Didelot24df8982015-01-20 19:13:32 -050055 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +000056}
57
58
59/* slave device handling ****************************************************/
Nicolas Dichtelabd2be02015-04-02 17:07:08 +020060static int dsa_slave_get_iflink(const struct net_device *dev)
Lennert Buytenhekc0840802009-03-20 09:49:49 +000061{
62 struct dsa_slave_priv *p = netdev_priv(dev);
Lennert Buytenhekc0840802009-03-20 09:49:49 +000063
Nicolas Dichtelabd2be02015-04-02 17:07:08 +020064 return p->parent->dst->master_netdev->ifindex;
Lennert Buytenhekc0840802009-03-20 09:49:49 +000065}
66
Florian Fainellib73adef2015-02-24 13:15:33 -080067static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p)
68{
69 return !!p->bridge_dev;
70}
71
Lennert Buytenhek91da11f2008-10-07 13:44:02 +000072static int dsa_slave_open(struct net_device *dev)
73{
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -080074 struct dsa_slave_priv *p = netdev_priv(dev);
Lennert Buytenheke84665c2009-03-20 09:52:09 +000075 struct net_device *master = p->parent->dst->master_netdev;
Florian Fainellib2f2af22014-09-24 17:05:18 -070076 struct dsa_switch *ds = p->parent;
Florian Fainellib73adef2015-02-24 13:15:33 -080077 u8 stp_state = dsa_port_is_bridged(p) ?
78 BR_STATE_BLOCKING : BR_STATE_FORWARDING;
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -080079 int err;
80
81 if (!(master->flags & IFF_UP))
82 return -ENETDOWN;
83
Joe Perches8feedbb2012-05-08 18:56:57 +000084 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +000085 err = dev_uc_add(master, dev->dev_addr);
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -080086 if (err < 0)
87 goto out;
88 }
89
90 if (dev->flags & IFF_ALLMULTI) {
91 err = dev_set_allmulti(master, 1);
92 if (err < 0)
93 goto del_unicast;
94 }
95 if (dev->flags & IFF_PROMISC) {
96 err = dev_set_promiscuity(master, 1);
97 if (err < 0)
98 goto clear_allmulti;
99 }
100
Vivien Didelot9d490b42016-08-23 12:38:56 -0400101 if (ds->ops->port_enable) {
102 err = ds->ops->port_enable(ds, p->port, p->phy);
Florian Fainellib2f2af22014-09-24 17:05:18 -0700103 if (err)
104 goto clear_promisc;
105 }
106
Vivien Didelot9d490b42016-08-23 12:38:56 -0400107 if (ds->ops->port_stp_state_set)
108 ds->ops->port_stp_state_set(ds, p->port, stp_state);
Florian Fainellib73adef2015-02-24 13:15:33 -0800109
Florian Fainellif7f1de52014-09-24 17:05:17 -0700110 if (p->phy)
111 phy_start(p->phy);
112
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000113 return 0;
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800114
Florian Fainellib2f2af22014-09-24 17:05:18 -0700115clear_promisc:
116 if (dev->flags & IFF_PROMISC)
Gilad Ben-Yossef4fdeddf2015-06-25 16:50:13 +0300117 dev_set_promiscuity(master, -1);
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800118clear_allmulti:
119 if (dev->flags & IFF_ALLMULTI)
120 dev_set_allmulti(master, -1);
121del_unicast:
Joe Perches8feedbb2012-05-08 18:56:57 +0000122 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000123 dev_uc_del(master, dev->dev_addr);
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800124out:
125 return err;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000126}
127
128static int dsa_slave_close(struct net_device *dev)
129{
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800130 struct dsa_slave_priv *p = netdev_priv(dev);
Lennert Buytenheke84665c2009-03-20 09:52:09 +0000131 struct net_device *master = p->parent->dst->master_netdev;
Florian Fainellib2f2af22014-09-24 17:05:18 -0700132 struct dsa_switch *ds = p->parent;
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800133
Florian Fainellif7f1de52014-09-24 17:05:17 -0700134 if (p->phy)
135 phy_stop(p->phy);
136
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800137 dev_mc_unsync(master, dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000138 dev_uc_unsync(master, dev);
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800139 if (dev->flags & IFF_ALLMULTI)
140 dev_set_allmulti(master, -1);
141 if (dev->flags & IFF_PROMISC)
142 dev_set_promiscuity(master, -1);
143
Joe Perches8feedbb2012-05-08 18:56:57 +0000144 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000145 dev_uc_del(master, dev->dev_addr);
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800146
Vivien Didelot9d490b42016-08-23 12:38:56 -0400147 if (ds->ops->port_disable)
148 ds->ops->port_disable(ds, p->port, p->phy);
Florian Fainellib2f2af22014-09-24 17:05:18 -0700149
Vivien Didelot9d490b42016-08-23 12:38:56 -0400150 if (ds->ops->port_stp_state_set)
151 ds->ops->port_stp_state_set(ds, p->port, BR_STATE_DISABLED);
Florian Fainellib73adef2015-02-24 13:15:33 -0800152
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000153 return 0;
154}
155
156static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
157{
158 struct dsa_slave_priv *p = netdev_priv(dev);
Lennert Buytenheke84665c2009-03-20 09:52:09 +0000159 struct net_device *master = p->parent->dst->master_netdev;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000160
161 if (change & IFF_ALLMULTI)
162 dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
163 if (change & IFF_PROMISC)
164 dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
165}
166
167static void dsa_slave_set_rx_mode(struct net_device *dev)
168{
169 struct dsa_slave_priv *p = netdev_priv(dev);
Lennert Buytenheke84665c2009-03-20 09:52:09 +0000170 struct net_device *master = p->parent->dst->master_netdev;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000171
172 dev_mc_sync(master, dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000173 dev_uc_sync(master, dev);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000174}
175
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800176static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000177{
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800178 struct dsa_slave_priv *p = netdev_priv(dev);
Lennert Buytenheke84665c2009-03-20 09:52:09 +0000179 struct net_device *master = p->parent->dst->master_netdev;
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800180 struct sockaddr *addr = a;
181 int err;
182
183 if (!is_valid_ether_addr(addr->sa_data))
184 return -EADDRNOTAVAIL;
185
186 if (!(dev->flags & IFF_UP))
187 goto out;
188
Joe Perches8feedbb2012-05-08 18:56:57 +0000189 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000190 err = dev_uc_add(master, addr->sa_data);
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800191 if (err < 0)
192 return err;
193 }
194
Joe Perches8feedbb2012-05-08 18:56:57 +0000195 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000196 dev_uc_del(master, dev->dev_addr);
Lennert Buytenhekdf02c6f2008-11-10 21:53:12 -0800197
198out:
Joe Perchesd08f1612014-01-20 09:52:20 -0800199 ether_addr_copy(dev->dev_addr, addr->sa_data);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000200
201 return 0;
202}
203
Vivien Didelot11149532015-08-13 12:52:17 -0400204static int dsa_slave_port_vlan_add(struct net_device *dev,
Jiri Pirko8f24f302015-10-01 11:03:43 +0200205 const struct switchdev_obj_port_vlan *vlan,
Jiri Pirkof8db8342015-09-24 10:02:42 +0200206 struct switchdev_trans *trans)
Vivien Didelot11149532015-08-13 12:52:17 -0400207{
Vivien Didelot11149532015-08-13 12:52:17 -0400208 struct dsa_slave_priv *p = netdev_priv(dev);
209 struct dsa_switch *ds = p->parent;
Vivien Didelot11149532015-08-13 12:52:17 -0400210
Jiri Pirko79a62eb2015-09-24 10:02:48 +0200211 if (switchdev_trans_ph_prepare(trans)) {
Vivien Didelot9d490b42016-08-23 12:38:56 -0400212 if (!ds->ops->port_vlan_prepare || !ds->ops->port_vlan_add)
Vivien Didelot11149532015-08-13 12:52:17 -0400213 return -EOPNOTSUPP;
214
Vivien Didelot9d490b42016-08-23 12:38:56 -0400215 return ds->ops->port_vlan_prepare(ds, p->port, vlan, trans);
Vivien Didelot11149532015-08-13 12:52:17 -0400216 }
217
Vivien Didelot9d490b42016-08-23 12:38:56 -0400218 ds->ops->port_vlan_add(ds, p->port, vlan, trans);
Vivien Didelot4d5770b2016-04-06 11:55:05 -0400219
Vivien Didelot11149532015-08-13 12:52:17 -0400220 return 0;
221}
222
223static int dsa_slave_port_vlan_del(struct net_device *dev,
Jiri Pirko8f24f302015-10-01 11:03:43 +0200224 const struct switchdev_obj_port_vlan *vlan)
Vivien Didelot11149532015-08-13 12:52:17 -0400225{
Vivien Didelot11149532015-08-13 12:52:17 -0400226 struct dsa_slave_priv *p = netdev_priv(dev);
227 struct dsa_switch *ds = p->parent;
Vivien Didelot11149532015-08-13 12:52:17 -0400228
Vivien Didelot9d490b42016-08-23 12:38:56 -0400229 if (!ds->ops->port_vlan_del)
Vivien Didelot11149532015-08-13 12:52:17 -0400230 return -EOPNOTSUPP;
231
Vivien Didelot9d490b42016-08-23 12:38:56 -0400232 return ds->ops->port_vlan_del(ds, p->port, vlan);
Vivien Didelot11149532015-08-13 12:52:17 -0400233}
234
235static int dsa_slave_port_vlan_dump(struct net_device *dev,
Jiri Pirko8f24f302015-10-01 11:03:43 +0200236 struct switchdev_obj_port_vlan *vlan,
Jiri Pirko648b4a92015-10-01 11:03:45 +0200237 switchdev_obj_dump_cb_t *cb)
Vivien Didelot11149532015-08-13 12:52:17 -0400238{
Vivien Didelot11149532015-08-13 12:52:17 -0400239 struct dsa_slave_priv *p = netdev_priv(dev);
240 struct dsa_switch *ds = p->parent;
Vivien Didelot11149532015-08-13 12:52:17 -0400241
Vivien Didelot9d490b42016-08-23 12:38:56 -0400242 if (ds->ops->port_vlan_dump)
243 return ds->ops->port_vlan_dump(ds, p->port, vlan, cb);
Vivien Didelot65aebfc2016-02-23 12:13:54 -0500244
Vivien Didelot477b1842016-02-23 12:13:56 -0500245 return -EOPNOTSUPP;
Vivien Didelot11149532015-08-13 12:52:17 -0400246}
247
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400248static int dsa_slave_port_fdb_add(struct net_device *dev,
Jiri Pirko52ba57c2015-10-01 11:03:44 +0200249 const struct switchdev_obj_port_fdb *fdb,
Jiri Pirkof8db8342015-09-24 10:02:42 +0200250 struct switchdev_trans *trans)
David S. Millercdf09692015-08-11 12:00:37 -0700251{
252 struct dsa_slave_priv *p = netdev_priv(dev);
253 struct dsa_switch *ds = p->parent;
Vivien Didelot146a3202015-10-08 11:35:12 -0400254
Vivien Didelot8497aa62016-04-06 11:55:04 -0400255 if (switchdev_trans_ph_prepare(trans)) {
Vivien Didelot9d490b42016-08-23 12:38:56 -0400256 if (!ds->ops->port_fdb_prepare || !ds->ops->port_fdb_add)
Vivien Didelot8497aa62016-04-06 11:55:04 -0400257 return -EOPNOTSUPP;
David S. Millercdf09692015-08-11 12:00:37 -0700258
Vivien Didelot9d490b42016-08-23 12:38:56 -0400259 return ds->ops->port_fdb_prepare(ds, p->port, fdb, trans);
Vivien Didelot8497aa62016-04-06 11:55:04 -0400260 }
David S. Millercdf09692015-08-11 12:00:37 -0700261
Vivien Didelot9d490b42016-08-23 12:38:56 -0400262 ds->ops->port_fdb_add(ds, p->port, fdb, trans);
Vivien Didelot8497aa62016-04-06 11:55:04 -0400263
264 return 0;
David S. Millercdf09692015-08-11 12:00:37 -0700265}
266
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400267static int dsa_slave_port_fdb_del(struct net_device *dev,
Jiri Pirko52ba57c2015-10-01 11:03:44 +0200268 const struct switchdev_obj_port_fdb *fdb)
David S. Millercdf09692015-08-11 12:00:37 -0700269{
270 struct dsa_slave_priv *p = netdev_priv(dev);
271 struct dsa_switch *ds = p->parent;
272 int ret = -EOPNOTSUPP;
273
Vivien Didelot9d490b42016-08-23 12:38:56 -0400274 if (ds->ops->port_fdb_del)
275 ret = ds->ops->port_fdb_del(ds, p->port, fdb);
David S. Millercdf09692015-08-11 12:00:37 -0700276
277 return ret;
278}
279
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400280static int dsa_slave_port_fdb_dump(struct net_device *dev,
Jiri Pirko52ba57c2015-10-01 11:03:44 +0200281 struct switchdev_obj_port_fdb *fdb,
Jiri Pirko648b4a92015-10-01 11:03:45 +0200282 switchdev_obj_dump_cb_t *cb)
David S. Millercdf09692015-08-11 12:00:37 -0700283{
284 struct dsa_slave_priv *p = netdev_priv(dev);
285 struct dsa_switch *ds = p->parent;
David S. Millercdf09692015-08-11 12:00:37 -0700286
Vivien Didelot9d490b42016-08-23 12:38:56 -0400287 if (ds->ops->port_fdb_dump)
288 return ds->ops->port_fdb_dump(ds, p->port, fdb, cb);
Vivien Didelotea70ba92015-10-22 09:34:38 -0400289
Vivien Didelot1a49a2f2015-10-22 09:34:43 -0400290 return -EOPNOTSUPP;
David S. Millercdf09692015-08-11 12:00:37 -0700291}
292
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000293static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
294{
295 struct dsa_slave_priv *p = netdev_priv(dev);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000296
297 if (p->phy != NULL)
Richard Cochran28b04112010-07-17 08:48:55 +0000298 return phy_mii_ioctl(p->phy, ifr, cmd);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000299
300 return -EOPNOTSUPP;
301}
302
Vivien Didelot43c44a92016-04-06 11:55:03 -0400303static int dsa_slave_stp_state_set(struct net_device *dev,
304 const struct switchdev_attr *attr,
305 struct switchdev_trans *trans)
Florian Fainellib73adef2015-02-24 13:15:33 -0800306{
307 struct dsa_slave_priv *p = netdev_priv(dev);
308 struct dsa_switch *ds = p->parent;
Florian Fainellib73adef2015-02-24 13:15:33 -0800309
Vivien Didelot43c44a92016-04-06 11:55:03 -0400310 if (switchdev_trans_ph_prepare(trans))
Vivien Didelot9d490b42016-08-23 12:38:56 -0400311 return ds->ops->port_stp_state_set ? 0 : -EOPNOTSUPP;
Florian Fainellib73adef2015-02-24 13:15:33 -0800312
Vivien Didelot9d490b42016-08-23 12:38:56 -0400313 ds->ops->port_stp_state_set(ds, p->port, attr->u.stp_state);
Vivien Didelot43c44a92016-04-06 11:55:03 -0400314
315 return 0;
Florian Fainellib73adef2015-02-24 13:15:33 -0800316}
317
Vivien Didelotfb2daba2016-02-26 13:16:00 -0500318static int dsa_slave_vlan_filtering(struct net_device *dev,
319 const struct switchdev_attr *attr,
320 struct switchdev_trans *trans)
321{
322 struct dsa_slave_priv *p = netdev_priv(dev);
323 struct dsa_switch *ds = p->parent;
324
325 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
326 if (switchdev_trans_ph_prepare(trans))
327 return 0;
328
Vivien Didelot9d490b42016-08-23 12:38:56 -0400329 if (ds->ops->port_vlan_filtering)
330 return ds->ops->port_vlan_filtering(ds, p->port,
Vivien Didelotfb2daba2016-02-26 13:16:00 -0500331 attr->u.vlan_filtering);
332
333 return 0;
334}
335
Vivien Didelot34a79f62016-07-18 20:45:38 -0400336static int dsa_fastest_ageing_time(struct dsa_switch *ds,
337 unsigned int ageing_time)
338{
339 int i;
340
341 for (i = 0; i < DSA_MAX_PORTS; ++i) {
342 struct dsa_port *dp = &ds->ports[i];
343
344 if (dp && dp->ageing_time && dp->ageing_time < ageing_time)
345 ageing_time = dp->ageing_time;
346 }
347
348 return ageing_time;
349}
350
351static int dsa_slave_ageing_time(struct net_device *dev,
352 const struct switchdev_attr *attr,
353 struct switchdev_trans *trans)
354{
355 struct dsa_slave_priv *p = netdev_priv(dev);
356 struct dsa_switch *ds = p->parent;
357 unsigned long ageing_jiffies = clock_t_to_jiffies(attr->u.ageing_time);
358 unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
359
360 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
361 if (switchdev_trans_ph_prepare(trans))
362 return 0;
363
364 /* Keep the fastest ageing time in case of multiple bridges */
365 ds->ports[p->port].ageing_time = ageing_time;
366 ageing_time = dsa_fastest_ageing_time(ds, ageing_time);
367
Vivien Didelot9d490b42016-08-23 12:38:56 -0400368 if (ds->ops->set_ageing_time)
369 return ds->ops->set_ageing_time(ds, ageing_time);
Vivien Didelot34a79f62016-07-18 20:45:38 -0400370
371 return 0;
372}
373
Scott Feldman35636062015-05-10 09:47:51 -0700374static int dsa_slave_port_attr_set(struct net_device *dev,
Jiri Pirkof7fadf32015-10-14 19:40:49 +0200375 const struct switchdev_attr *attr,
Jiri Pirko7ea6eb32015-09-24 10:02:41 +0200376 struct switchdev_trans *trans)
Scott Feldman35636062015-05-10 09:47:51 -0700377{
Vivien Didelotb8d866a2015-09-29 12:38:36 -0400378 int ret;
Scott Feldman35636062015-05-10 09:47:51 -0700379
380 switch (attr->id) {
Jiri Pirko1f868392015-10-01 11:03:42 +0200381 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
Vivien Didelot43c44a92016-04-06 11:55:03 -0400382 ret = dsa_slave_stp_state_set(dev, attr, trans);
Scott Feldman35636062015-05-10 09:47:51 -0700383 break;
Vivien Didelotfb2daba2016-02-26 13:16:00 -0500384 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
385 ret = dsa_slave_vlan_filtering(dev, attr, trans);
386 break;
Vivien Didelot34a79f62016-07-18 20:45:38 -0400387 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
388 ret = dsa_slave_ageing_time(dev, attr, trans);
389 break;
Scott Feldman35636062015-05-10 09:47:51 -0700390 default:
391 ret = -EOPNOTSUPP;
392 break;
393 }
394
395 return ret;
396}
397
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400398static int dsa_slave_port_obj_add(struct net_device *dev,
Jiri Pirko648b4a92015-10-01 11:03:45 +0200399 const struct switchdev_obj *obj,
Jiri Pirko7ea6eb32015-09-24 10:02:41 +0200400 struct switchdev_trans *trans)
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400401{
402 int err;
403
404 /* For the prepare phase, ensure the full set of changes is feasable in
405 * one go in order to signal a failure properly. If an operation is not
406 * supported, return -EOPNOTSUPP.
407 */
408
Jiri Pirko9e8f4a52015-10-01 11:03:46 +0200409 switch (obj->id) {
Jiri Pirko57d80832015-10-01 11:03:41 +0200410 case SWITCHDEV_OBJ_ID_PORT_FDB:
Jiri Pirko648b4a92015-10-01 11:03:45 +0200411 err = dsa_slave_port_fdb_add(dev,
412 SWITCHDEV_OBJ_PORT_FDB(obj),
413 trans);
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400414 break;
Jiri Pirko57d80832015-10-01 11:03:41 +0200415 case SWITCHDEV_OBJ_ID_PORT_VLAN:
Jiri Pirko648b4a92015-10-01 11:03:45 +0200416 err = dsa_slave_port_vlan_add(dev,
417 SWITCHDEV_OBJ_PORT_VLAN(obj),
418 trans);
Vivien Didelot11149532015-08-13 12:52:17 -0400419 break;
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400420 default:
421 err = -EOPNOTSUPP;
422 break;
423 }
424
425 return err;
426}
427
428static int dsa_slave_port_obj_del(struct net_device *dev,
Jiri Pirko648b4a92015-10-01 11:03:45 +0200429 const struct switchdev_obj *obj)
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400430{
431 int err;
432
Jiri Pirko9e8f4a52015-10-01 11:03:46 +0200433 switch (obj->id) {
Jiri Pirko57d80832015-10-01 11:03:41 +0200434 case SWITCHDEV_OBJ_ID_PORT_FDB:
Jiri Pirko648b4a92015-10-01 11:03:45 +0200435 err = dsa_slave_port_fdb_del(dev,
436 SWITCHDEV_OBJ_PORT_FDB(obj));
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400437 break;
Jiri Pirko57d80832015-10-01 11:03:41 +0200438 case SWITCHDEV_OBJ_ID_PORT_VLAN:
Jiri Pirko648b4a92015-10-01 11:03:45 +0200439 err = dsa_slave_port_vlan_del(dev,
440 SWITCHDEV_OBJ_PORT_VLAN(obj));
Vivien Didelot11149532015-08-13 12:52:17 -0400441 break;
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400442 default:
443 err = -EOPNOTSUPP;
444 break;
445 }
446
447 return err;
448}
449
450static int dsa_slave_port_obj_dump(struct net_device *dev,
Jiri Pirko648b4a92015-10-01 11:03:45 +0200451 struct switchdev_obj *obj,
452 switchdev_obj_dump_cb_t *cb)
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400453{
454 int err;
455
Jiri Pirko9e8f4a52015-10-01 11:03:46 +0200456 switch (obj->id) {
Jiri Pirko57d80832015-10-01 11:03:41 +0200457 case SWITCHDEV_OBJ_ID_PORT_FDB:
Jiri Pirko648b4a92015-10-01 11:03:45 +0200458 err = dsa_slave_port_fdb_dump(dev,
459 SWITCHDEV_OBJ_PORT_FDB(obj),
460 cb);
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400461 break;
Jiri Pirko57d80832015-10-01 11:03:41 +0200462 case SWITCHDEV_OBJ_ID_PORT_VLAN:
Jiri Pirko648b4a92015-10-01 11:03:45 +0200463 err = dsa_slave_port_vlan_dump(dev,
464 SWITCHDEV_OBJ_PORT_VLAN(obj),
465 cb);
Vivien Didelot11149532015-08-13 12:52:17 -0400466 break;
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400467 default:
468 err = -EOPNOTSUPP;
469 break;
470 }
471
472 return err;
473}
474
Florian Fainellib73adef2015-02-24 13:15:33 -0800475static int dsa_slave_bridge_port_join(struct net_device *dev,
476 struct net_device *br)
477{
478 struct dsa_slave_priv *p = netdev_priv(dev);
479 struct dsa_switch *ds = p->parent;
480 int ret = -EOPNOTSUPP;
481
482 p->bridge_dev = br;
483
Vivien Didelot9d490b42016-08-23 12:38:56 -0400484 if (ds->ops->port_bridge_join)
485 ret = ds->ops->port_bridge_join(ds, p->port, br);
Florian Fainellib73adef2015-02-24 13:15:33 -0800486
Vivien Didelot6debb682016-03-13 16:21:34 -0400487 return ret == -EOPNOTSUPP ? 0 : ret;
Florian Fainellib73adef2015-02-24 13:15:33 -0800488}
489
Vivien Didelot16bfa702016-03-13 16:21:33 -0400490static void dsa_slave_bridge_port_leave(struct net_device *dev)
Florian Fainellib73adef2015-02-24 13:15:33 -0800491{
492 struct dsa_slave_priv *p = netdev_priv(dev);
493 struct dsa_switch *ds = p->parent;
Florian Fainellib73adef2015-02-24 13:15:33 -0800494
495
Vivien Didelot9d490b42016-08-23 12:38:56 -0400496 if (ds->ops->port_bridge_leave)
497 ds->ops->port_bridge_leave(ds, p->port);
Florian Fainellib73adef2015-02-24 13:15:33 -0800498
499 p->bridge_dev = NULL;
500
501 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
502 * so allow it to be in BR_STATE_FORWARDING to be kept functional
503 */
Vivien Didelot9d490b42016-08-23 12:38:56 -0400504 if (ds->ops->port_stp_state_set)
505 ds->ops->port_stp_state_set(ds, p->port, BR_STATE_FORWARDING);
Florian Fainellib73adef2015-02-24 13:15:33 -0800506}
507
Scott Feldmanf8e20a92015-05-10 09:47:49 -0700508static int dsa_slave_port_attr_get(struct net_device *dev,
509 struct switchdev_attr *attr)
Florian Fainellib73adef2015-02-24 13:15:33 -0800510{
511 struct dsa_slave_priv *p = netdev_priv(dev);
512 struct dsa_switch *ds = p->parent;
513
Scott Feldmanf8e20a92015-05-10 09:47:49 -0700514 switch (attr->id) {
Jiri Pirko1f868392015-10-01 11:03:42 +0200515 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
Scott Feldman42275bd2015-05-13 11:16:50 -0700516 attr->u.ppid.id_len = sizeof(ds->index);
517 memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
Scott Feldmanf8e20a92015-05-10 09:47:49 -0700518 break;
519 default:
520 return -EOPNOTSUPP;
521 }
Florian Fainellib73adef2015-02-24 13:15:33 -0800522
523 return 0;
524}
525
Florian Fainelli04ff53f2015-07-31 11:42:57 -0700526static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
527 struct sk_buff *skb)
528{
529#ifdef CONFIG_NET_POLL_CONTROLLER
530 if (p->netpoll)
531 netpoll_send_skb(p->netpoll, skb);
532#else
533 BUG();
534#endif
535 return NETDEV_TX_OK;
536}
537
Florian Fainelli3e8a72d2014-08-27 17:04:46 -0700538static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
539{
540 struct dsa_slave_priv *p = netdev_priv(dev);
Florian Fainelli4ed70ce2015-07-31 11:42:56 -0700541 struct sk_buff *nskb;
Florian Fainelli3e8a72d2014-08-27 17:04:46 -0700542
Florian Fainelli4ed70ce2015-07-31 11:42:56 -0700543 dev->stats.tx_packets++;
544 dev->stats.tx_bytes += skb->len;
Florian Fainelli3e8a72d2014-08-27 17:04:46 -0700545
Florian Fainelli4ed70ce2015-07-31 11:42:56 -0700546 /* Transmit function may have to reallocate the original SKB */
547 nskb = p->xmit(skb, dev);
548 if (!nskb)
549 return NETDEV_TX_OK;
Florian Fainelli5aed85c2014-08-27 17:04:52 -0700550
Florian Fainelli04ff53f2015-07-31 11:42:57 -0700551 /* SKB for netpoll still need to be mangled with the protocol-specific
552 * tag to be successfully transmitted
553 */
554 if (unlikely(netpoll_tx_running(dev)))
555 return dsa_netpoll_send_skb(p, nskb);
556
Florian Fainelli4ed70ce2015-07-31 11:42:56 -0700557 /* Queue the SKB for transmission on the parent interface, but
558 * do not modify its EtherType
559 */
560 nskb->dev = p->parent->dst->master_netdev;
561 dev_queue_xmit(nskb);
Florian Fainelli5aed85c2014-08-27 17:04:52 -0700562
563 return NETDEV_TX_OK;
564}
565
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000566/* ethtool operations *******************************************************/
567static int
568dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
569{
570 struct dsa_slave_priv *p = netdev_priv(dev);
571 int err;
572
573 err = -EOPNOTSUPP;
574 if (p->phy != NULL) {
575 err = phy_read_status(p->phy);
576 if (err == 0)
577 err = phy_ethtool_gset(p->phy, cmd);
578 }
579
580 return err;
581}
582
583static int
584dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
585{
586 struct dsa_slave_priv *p = netdev_priv(dev);
587
588 if (p->phy != NULL)
589 return phy_ethtool_sset(p->phy, cmd);
590
591 return -EOPNOTSUPP;
592}
593
594static void dsa_slave_get_drvinfo(struct net_device *dev,
595 struct ethtool_drvinfo *drvinfo)
596{
Jiri Pirko7826d432013-01-06 00:44:26 +0000597 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
598 strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
599 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
600 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000601}
602
Guenter Roeck3d762a02014-10-29 10:45:04 -0700603static int dsa_slave_get_regs_len(struct net_device *dev)
604{
605 struct dsa_slave_priv *p = netdev_priv(dev);
606 struct dsa_switch *ds = p->parent;
607
Vivien Didelot9d490b42016-08-23 12:38:56 -0400608 if (ds->ops->get_regs_len)
609 return ds->ops->get_regs_len(ds, p->port);
Guenter Roeck3d762a02014-10-29 10:45:04 -0700610
611 return -EOPNOTSUPP;
612}
613
614static void
615dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
616{
617 struct dsa_slave_priv *p = netdev_priv(dev);
618 struct dsa_switch *ds = p->parent;
619
Vivien Didelot9d490b42016-08-23 12:38:56 -0400620 if (ds->ops->get_regs)
621 ds->ops->get_regs(ds, p->port, regs, _p);
Guenter Roeck3d762a02014-10-29 10:45:04 -0700622}
623
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000624static int dsa_slave_nway_reset(struct net_device *dev)
625{
626 struct dsa_slave_priv *p = netdev_priv(dev);
627
628 if (p->phy != NULL)
629 return genphy_restart_aneg(p->phy);
630
631 return -EOPNOTSUPP;
632}
633
634static u32 dsa_slave_get_link(struct net_device *dev)
635{
636 struct dsa_slave_priv *p = netdev_priv(dev);
637
638 if (p->phy != NULL) {
639 genphy_update_link(p->phy);
640 return p->phy->link;
641 }
642
643 return -EOPNOTSUPP;
644}
645
Guenter Roeck6793abb2014-10-29 10:45:01 -0700646static int dsa_slave_get_eeprom_len(struct net_device *dev)
647{
648 struct dsa_slave_priv *p = netdev_priv(dev);
649 struct dsa_switch *ds = p->parent;
650
Andrew Lunn0e576042016-06-04 21:16:52 +0200651 if (ds->cd && ds->cd->eeprom_len)
Andrew Lunnff049552016-05-10 23:27:24 +0200652 return ds->cd->eeprom_len;
Guenter Roeck6793abb2014-10-29 10:45:01 -0700653
Vivien Didelot9d490b42016-08-23 12:38:56 -0400654 if (ds->ops->get_eeprom_len)
655 return ds->ops->get_eeprom_len(ds);
Guenter Roeck6793abb2014-10-29 10:45:01 -0700656
657 return 0;
658}
659
660static int dsa_slave_get_eeprom(struct net_device *dev,
661 struct ethtool_eeprom *eeprom, u8 *data)
662{
663 struct dsa_slave_priv *p = netdev_priv(dev);
664 struct dsa_switch *ds = p->parent;
665
Vivien Didelot9d490b42016-08-23 12:38:56 -0400666 if (ds->ops->get_eeprom)
667 return ds->ops->get_eeprom(ds, eeprom, data);
Guenter Roeck6793abb2014-10-29 10:45:01 -0700668
669 return -EOPNOTSUPP;
670}
671
672static int dsa_slave_set_eeprom(struct net_device *dev,
673 struct ethtool_eeprom *eeprom, u8 *data)
674{
675 struct dsa_slave_priv *p = netdev_priv(dev);
676 struct dsa_switch *ds = p->parent;
677
Vivien Didelot9d490b42016-08-23 12:38:56 -0400678 if (ds->ops->set_eeprom)
679 return ds->ops->set_eeprom(ds, eeprom, data);
Guenter Roeck6793abb2014-10-29 10:45:01 -0700680
681 return -EOPNOTSUPP;
682}
683
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000684static void dsa_slave_get_strings(struct net_device *dev,
685 uint32_t stringset, uint8_t *data)
686{
687 struct dsa_slave_priv *p = netdev_priv(dev);
688 struct dsa_switch *ds = p->parent;
689
690 if (stringset == ETH_SS_STATS) {
691 int len = ETH_GSTRING_LEN;
692
693 strncpy(data, "tx_packets", len);
694 strncpy(data + len, "tx_bytes", len);
695 strncpy(data + 2 * len, "rx_packets", len);
696 strncpy(data + 3 * len, "rx_bytes", len);
Vivien Didelot9d490b42016-08-23 12:38:56 -0400697 if (ds->ops->get_strings)
698 ds->ops->get_strings(ds, p->port, data + 4 * len);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000699 }
700}
701
Florian Fainellibadf3ad2016-04-27 11:45:14 -0700702static void dsa_cpu_port_get_ethtool_stats(struct net_device *dev,
703 struct ethtool_stats *stats,
704 uint64_t *data)
705{
706 struct dsa_switch_tree *dst = dev->dsa_ptr;
707 struct dsa_switch *ds = dst->ds[0];
708 s8 cpu_port = dst->cpu_port;
709 int count = 0;
710
711 if (dst->master_ethtool_ops.get_sset_count) {
712 count = dst->master_ethtool_ops.get_sset_count(dev,
713 ETH_SS_STATS);
714 dst->master_ethtool_ops.get_ethtool_stats(dev, stats, data);
715 }
716
Vivien Didelot9d490b42016-08-23 12:38:56 -0400717 if (ds->ops->get_ethtool_stats)
718 ds->ops->get_ethtool_stats(ds, cpu_port, data + count);
Florian Fainellibadf3ad2016-04-27 11:45:14 -0700719}
720
721static int dsa_cpu_port_get_sset_count(struct net_device *dev, int sset)
722{
723 struct dsa_switch_tree *dst = dev->dsa_ptr;
724 struct dsa_switch *ds = dst->ds[0];
725 int count = 0;
726
727 if (dst->master_ethtool_ops.get_sset_count)
728 count += dst->master_ethtool_ops.get_sset_count(dev, sset);
729
Vivien Didelot9d490b42016-08-23 12:38:56 -0400730 if (sset == ETH_SS_STATS && ds->ops->get_sset_count)
731 count += ds->ops->get_sset_count(ds);
Florian Fainellibadf3ad2016-04-27 11:45:14 -0700732
733 return count;
734}
735
736static void dsa_cpu_port_get_strings(struct net_device *dev,
737 uint32_t stringset, uint8_t *data)
738{
739 struct dsa_switch_tree *dst = dev->dsa_ptr;
740 struct dsa_switch *ds = dst->ds[0];
741 s8 cpu_port = dst->cpu_port;
742 int len = ETH_GSTRING_LEN;
743 int mcount = 0, count;
744 unsigned int i;
745 uint8_t pfx[4];
746 uint8_t *ndata;
747
748 snprintf(pfx, sizeof(pfx), "p%.2d", cpu_port);
749 /* We do not want to be NULL-terminated, since this is a prefix */
750 pfx[sizeof(pfx) - 1] = '_';
751
752 if (dst->master_ethtool_ops.get_sset_count) {
753 mcount = dst->master_ethtool_ops.get_sset_count(dev,
754 ETH_SS_STATS);
755 dst->master_ethtool_ops.get_strings(dev, stringset, data);
756 }
757
Vivien Didelot9d490b42016-08-23 12:38:56 -0400758 if (stringset == ETH_SS_STATS && ds->ops->get_strings) {
Florian Fainellibadf3ad2016-04-27 11:45:14 -0700759 ndata = data + mcount * len;
760 /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
761 * the output after to prepend our CPU port prefix we
762 * constructed earlier
763 */
Vivien Didelot9d490b42016-08-23 12:38:56 -0400764 ds->ops->get_strings(ds, cpu_port, ndata);
765 count = ds->ops->get_sset_count(ds);
Florian Fainellibadf3ad2016-04-27 11:45:14 -0700766 for (i = 0; i < count; i++) {
767 memmove(ndata + (i * len + sizeof(pfx)),
768 ndata + i * len, len - sizeof(pfx));
769 memcpy(ndata + i * len, pfx, sizeof(pfx));
770 }
771 }
772}
773
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000774static void dsa_slave_get_ethtool_stats(struct net_device *dev,
775 struct ethtool_stats *stats,
776 uint64_t *data)
777{
778 struct dsa_slave_priv *p = netdev_priv(dev);
779 struct dsa_switch *ds = p->parent;
780
Vivien Didelot46e7b8d2016-04-18 16:10:24 -0400781 data[0] = dev->stats.tx_packets;
782 data[1] = dev->stats.tx_bytes;
783 data[2] = dev->stats.rx_packets;
784 data[3] = dev->stats.rx_bytes;
Vivien Didelot9d490b42016-08-23 12:38:56 -0400785 if (ds->ops->get_ethtool_stats)
786 ds->ops->get_ethtool_stats(ds, p->port, data + 4);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000787}
788
789static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
790{
791 struct dsa_slave_priv *p = netdev_priv(dev);
792 struct dsa_switch *ds = p->parent;
793
794 if (sset == ETH_SS_STATS) {
795 int count;
796
797 count = 4;
Vivien Didelot9d490b42016-08-23 12:38:56 -0400798 if (ds->ops->get_sset_count)
799 count += ds->ops->get_sset_count(ds);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000800
801 return count;
802 }
803
804 return -EOPNOTSUPP;
805}
806
Florian Fainelli19e57c42014-09-18 17:31:24 -0700807static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
808{
809 struct dsa_slave_priv *p = netdev_priv(dev);
810 struct dsa_switch *ds = p->parent;
811
Vivien Didelot9d490b42016-08-23 12:38:56 -0400812 if (ds->ops->get_wol)
813 ds->ops->get_wol(ds, p->port, w);
Florian Fainelli19e57c42014-09-18 17:31:24 -0700814}
815
816static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
817{
818 struct dsa_slave_priv *p = netdev_priv(dev);
819 struct dsa_switch *ds = p->parent;
820 int ret = -EOPNOTSUPP;
821
Vivien Didelot9d490b42016-08-23 12:38:56 -0400822 if (ds->ops->set_wol)
823 ret = ds->ops->set_wol(ds, p->port, w);
Florian Fainelli19e57c42014-09-18 17:31:24 -0700824
825 return ret;
826}
827
Florian Fainelli79052882014-09-24 17:05:21 -0700828static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
829{
830 struct dsa_slave_priv *p = netdev_priv(dev);
831 struct dsa_switch *ds = p->parent;
832 int ret;
833
Vivien Didelot9d490b42016-08-23 12:38:56 -0400834 if (!ds->ops->set_eee)
Florian Fainelli79052882014-09-24 17:05:21 -0700835 return -EOPNOTSUPP;
836
Vivien Didelot9d490b42016-08-23 12:38:56 -0400837 ret = ds->ops->set_eee(ds, p->port, p->phy, e);
Florian Fainelli79052882014-09-24 17:05:21 -0700838 if (ret)
839 return ret;
840
841 if (p->phy)
842 ret = phy_ethtool_set_eee(p->phy, e);
843
844 return ret;
845}
846
847static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
848{
849 struct dsa_slave_priv *p = netdev_priv(dev);
850 struct dsa_switch *ds = p->parent;
851 int ret;
852
Vivien Didelot9d490b42016-08-23 12:38:56 -0400853 if (!ds->ops->get_eee)
Florian Fainelli79052882014-09-24 17:05:21 -0700854 return -EOPNOTSUPP;
855
Vivien Didelot9d490b42016-08-23 12:38:56 -0400856 ret = ds->ops->get_eee(ds, p->port, e);
Florian Fainelli79052882014-09-24 17:05:21 -0700857 if (ret)
858 return ret;
859
860 if (p->phy)
861 ret = phy_ethtool_get_eee(p->phy, e);
862
863 return ret;
864}
865
Florian Fainelli04ff53f2015-07-31 11:42:57 -0700866#ifdef CONFIG_NET_POLL_CONTROLLER
867static int dsa_slave_netpoll_setup(struct net_device *dev,
868 struct netpoll_info *ni)
869{
870 struct dsa_slave_priv *p = netdev_priv(dev);
871 struct dsa_switch *ds = p->parent;
872 struct net_device *master = ds->dst->master_netdev;
873 struct netpoll *netpoll;
874 int err = 0;
875
876 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
877 if (!netpoll)
878 return -ENOMEM;
879
880 err = __netpoll_setup(netpoll, master);
881 if (err) {
882 kfree(netpoll);
883 goto out;
884 }
885
886 p->netpoll = netpoll;
887out:
888 return err;
889}
890
891static void dsa_slave_netpoll_cleanup(struct net_device *dev)
892{
893 struct dsa_slave_priv *p = netdev_priv(dev);
894 struct netpoll *netpoll = p->netpoll;
895
896 if (!netpoll)
897 return;
898
899 p->netpoll = NULL;
900
901 __netpoll_free_async(netpoll);
902}
903
904static void dsa_slave_poll_controller(struct net_device *dev)
905{
906}
907#endif
908
Florian Fainelliaf421922016-06-07 16:32:41 -0700909void dsa_cpu_port_ethtool_init(struct ethtool_ops *ops)
910{
911 ops->get_sset_count = dsa_cpu_port_get_sset_count;
912 ops->get_ethtool_stats = dsa_cpu_port_get_ethtool_stats;
913 ops->get_strings = dsa_cpu_port_get_strings;
914}
915
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000916static const struct ethtool_ops dsa_slave_ethtool_ops = {
917 .get_settings = dsa_slave_get_settings,
918 .set_settings = dsa_slave_set_settings,
919 .get_drvinfo = dsa_slave_get_drvinfo,
Guenter Roeck3d762a02014-10-29 10:45:04 -0700920 .get_regs_len = dsa_slave_get_regs_len,
921 .get_regs = dsa_slave_get_regs,
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000922 .nway_reset = dsa_slave_nway_reset,
923 .get_link = dsa_slave_get_link,
Guenter Roeck6793abb2014-10-29 10:45:01 -0700924 .get_eeprom_len = dsa_slave_get_eeprom_len,
925 .get_eeprom = dsa_slave_get_eeprom,
926 .set_eeprom = dsa_slave_set_eeprom,
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000927 .get_strings = dsa_slave_get_strings,
928 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
929 .get_sset_count = dsa_slave_get_sset_count,
Florian Fainelli19e57c42014-09-18 17:31:24 -0700930 .set_wol = dsa_slave_set_wol,
931 .get_wol = dsa_slave_get_wol,
Florian Fainelli79052882014-09-24 17:05:21 -0700932 .set_eee = dsa_slave_set_eee,
933 .get_eee = dsa_slave_get_eee,
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000934};
935
Florian Fainelli3e8a72d2014-08-27 17:04:46 -0700936static const struct net_device_ops dsa_slave_netdev_ops = {
Stephen Hemmingerd442ad42009-01-06 16:45:26 -0800937 .ndo_open = dsa_slave_open,
938 .ndo_stop = dsa_slave_close,
Florian Fainelli3e8a72d2014-08-27 17:04:46 -0700939 .ndo_start_xmit = dsa_slave_xmit,
Stephen Hemmingerd442ad42009-01-06 16:45:26 -0800940 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
941 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
Stephen Hemmingerd442ad42009-01-06 16:45:26 -0800942 .ndo_set_mac_address = dsa_slave_set_mac_address,
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400943 .ndo_fdb_add = switchdev_port_fdb_add,
944 .ndo_fdb_del = switchdev_port_fdb_del,
945 .ndo_fdb_dump = switchdev_port_fdb_dump,
Stephen Hemmingerd442ad42009-01-06 16:45:26 -0800946 .ndo_do_ioctl = dsa_slave_ioctl,
Nicolas Dichtelabd2be02015-04-02 17:07:08 +0200947 .ndo_get_iflink = dsa_slave_get_iflink,
Florian Fainelli04ff53f2015-07-31 11:42:57 -0700948#ifdef CONFIG_NET_POLL_CONTROLLER
949 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
950 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
951 .ndo_poll_controller = dsa_slave_poll_controller,
952#endif
Vivien Didelot11149532015-08-13 12:52:17 -0400953 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
954 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
955 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
Scott Feldman98237d42015-03-15 21:07:15 -0700956};
957
Jiri Pirko9d47c0a2015-05-10 09:47:47 -0700958static const struct switchdev_ops dsa_slave_switchdev_ops = {
Scott Feldmanf8e20a92015-05-10 09:47:49 -0700959 .switchdev_port_attr_get = dsa_slave_port_attr_get,
Scott Feldman35636062015-05-10 09:47:51 -0700960 .switchdev_port_attr_set = dsa_slave_port_attr_set,
Vivien Didelotba14d9e2015-08-10 09:09:53 -0400961 .switchdev_port_obj_add = dsa_slave_port_obj_add,
962 .switchdev_port_obj_del = dsa_slave_port_obj_del,
963 .switchdev_port_obj_dump = dsa_slave_port_obj_dump,
Stephen Hemmingerd442ad42009-01-06 16:45:26 -0800964};
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000965
Florian Fainellif37db852015-09-23 18:19:58 -0700966static struct device_type dsa_type = {
967 .name = "dsa",
968};
969
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -0700970static void dsa_slave_adjust_link(struct net_device *dev)
971{
972 struct dsa_slave_priv *p = netdev_priv(dev);
Florian Fainelliec9436b2014-08-27 17:04:53 -0700973 struct dsa_switch *ds = p->parent;
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -0700974 unsigned int status_changed = 0;
975
976 if (p->old_link != p->phy->link) {
977 status_changed = 1;
978 p->old_link = p->phy->link;
979 }
980
981 if (p->old_duplex != p->phy->duplex) {
982 status_changed = 1;
983 p->old_duplex = p->phy->duplex;
984 }
985
986 if (p->old_pause != p->phy->pause) {
987 status_changed = 1;
988 p->old_pause = p->phy->pause;
989 }
990
Vivien Didelot9d490b42016-08-23 12:38:56 -0400991 if (ds->ops->adjust_link && status_changed)
992 ds->ops->adjust_link(ds, p->port, p->phy);
Florian Fainelliec9436b2014-08-27 17:04:53 -0700993
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -0700994 if (status_changed)
995 phy_print_status(p->phy);
996}
997
Florian Fainellice31b312014-08-27 17:04:54 -0700998static int dsa_slave_fixed_link_update(struct net_device *dev,
999 struct fixed_phy_status *status)
1000{
Andrew Lunnb71be352016-03-12 00:01:37 +01001001 struct dsa_slave_priv *p;
1002 struct dsa_switch *ds;
Florian Fainellice31b312014-08-27 17:04:54 -07001003
Andrew Lunnb71be352016-03-12 00:01:37 +01001004 if (dev) {
1005 p = netdev_priv(dev);
1006 ds = p->parent;
Vivien Didelot9d490b42016-08-23 12:38:56 -04001007 if (ds->ops->fixed_link_update)
1008 ds->ops->fixed_link_update(ds, p->port, status);
Andrew Lunnb71be352016-03-12 00:01:37 +01001009 }
Florian Fainellice31b312014-08-27 17:04:54 -07001010
1011 return 0;
1012}
1013
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001014/* slave device setup *******************************************************/
Florian Fainellic305c162015-03-10 16:57:12 -07001015static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
Florian Fainellicd28a1a2015-03-10 16:57:13 -07001016 struct net_device *slave_dev,
1017 int addr)
Florian Fainellic305c162015-03-10 16:57:12 -07001018{
1019 struct dsa_switch *ds = p->parent;
1020
Andrew Lunn7f854422016-01-06 20:11:18 +01001021 p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr);
Russell Kingd25b8e72015-10-03 18:09:07 +01001022 if (!p->phy) {
1023 netdev_err(slave_dev, "no phy at %d\n", addr);
Florian Fainellic305c162015-03-10 16:57:12 -07001024 return -ENODEV;
Russell Kingd25b8e72015-10-03 18:09:07 +01001025 }
Florian Fainellic305c162015-03-10 16:57:12 -07001026
1027 /* Use already configured phy mode */
Florian Fainelli211c5042015-08-08 12:58:57 -07001028 if (p->phy_interface == PHY_INTERFACE_MODE_NA)
1029 p->phy_interface = p->phy->interface;
Florian Fainellic305c162015-03-10 16:57:12 -07001030 phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
1031 p->phy_interface);
1032
1033 return 0;
1034}
1035
Florian Fainelli9697f1c2014-12-11 12:49:16 -08001036static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001037 struct net_device *slave_dev)
1038{
1039 struct dsa_switch *ds = p->parent;
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001040 struct device_node *phy_dn, *port_dn;
Florian Fainellice31b312014-08-27 17:04:54 -07001041 bool phy_is_fixed = false;
Florian Fainelli68195632014-09-19 13:07:54 -07001042 u32 phy_flags = 0;
Guenter Roeck19334922015-02-16 21:23:51 -08001043 int mode, ret;
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001044
Andrew Lunn189b0d92016-06-04 21:16:58 +02001045 port_dn = ds->ports[p->port].dn;
Guenter Roeck19334922015-02-16 21:23:51 -08001046 mode = of_get_phy_mode(port_dn);
1047 if (mode < 0)
1048 mode = PHY_INTERFACE_MODE_NA;
1049 p->phy_interface = mode;
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001050
1051 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
1052 if (of_phy_is_fixed_link(port_dn)) {
1053 /* In the case of a fixed PHY, the DT node associated
1054 * to the fixed PHY is the Port DT node
1055 */
1056 ret = of_phy_register_fixed_link(port_dn);
1057 if (ret) {
Russell Kingd25b8e72015-10-03 18:09:07 +01001058 netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
Florian Fainelli9697f1c2014-12-11 12:49:16 -08001059 return ret;
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001060 }
Florian Fainellice31b312014-08-27 17:04:54 -07001061 phy_is_fixed = true;
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001062 phy_dn = port_dn;
1063 }
1064
Vivien Didelot9d490b42016-08-23 12:38:56 -04001065 if (ds->ops->get_phy_flags)
1066 phy_flags = ds->ops->get_phy_flags(ds, p->port);
Florian Fainelli68195632014-09-19 13:07:54 -07001067
Florian Fainellicd28a1a2015-03-10 16:57:13 -07001068 if (phy_dn) {
Russell Kingd25b8e72015-10-03 18:09:07 +01001069 int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
1070
Florian Fainellicd28a1a2015-03-10 16:57:13 -07001071 /* If this PHY address is part of phys_mii_mask, which means
1072 * that we need to divert reads and writes to/from it, then we
1073 * want to bind this device using the slave MII bus created by
1074 * DSA to make that happen.
1075 */
Russell Kingd25b8e72015-10-03 18:09:07 +01001076 if (!phy_is_fixed && phy_id >= 0 &&
1077 (ds->phys_mii_mask & (1 << phy_id))) {
1078 ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
1079 if (ret) {
1080 netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
Florian Fainellicd28a1a2015-03-10 16:57:13 -07001081 return ret;
Russell Kingd25b8e72015-10-03 18:09:07 +01001082 }
Florian Fainellicd28a1a2015-03-10 16:57:13 -07001083 } else {
1084 p->phy = of_phy_connect(slave_dev, phy_dn,
1085 dsa_slave_adjust_link,
1086 phy_flags,
1087 p->phy_interface);
1088 }
1089 }
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001090
Florian Fainellice31b312014-08-27 17:04:54 -07001091 if (p->phy && phy_is_fixed)
1092 fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
1093
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001094 /* We could not connect to a designated PHY, so use the switch internal
1095 * MDIO bus instead
1096 */
Andrew Lunnb31f65f2014-11-05 19:47:28 +01001097 if (!p->phy) {
Florian Fainellicd28a1a2015-03-10 16:57:13 -07001098 ret = dsa_slave_phy_connect(p, slave_dev, p->port);
Russell Kingd25b8e72015-10-03 18:09:07 +01001099 if (ret) {
1100 netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
Florian Fainellic305c162015-03-10 16:57:12 -07001101 return ret;
Russell Kingd25b8e72015-10-03 18:09:07 +01001102 }
Andrew Lunnb31f65f2014-11-05 19:47:28 +01001103 }
Florian Fainelli9697f1c2014-12-11 12:49:16 -08001104
Andrew Lunn22209432016-01-06 20:11:13 +01001105 phy_attached_info(p->phy);
1106
Florian Fainelli9697f1c2014-12-11 12:49:16 -08001107 return 0;
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001108}
1109
Andrew Lunn448b4482015-05-06 01:09:56 +02001110static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1111static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1112 struct netdev_queue *txq,
1113 void *_unused)
1114{
1115 lockdep_set_class(&txq->_xmit_lock,
1116 &dsa_slave_netdev_xmit_lock_key);
1117}
1118
Florian Fainelli24462542014-09-18 17:31:22 -07001119int dsa_slave_suspend(struct net_device *slave_dev)
1120{
1121 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1122
Florian Fainelli24462542014-09-18 17:31:22 -07001123 if (p->phy) {
1124 phy_stop(p->phy);
1125 p->old_pause = -1;
1126 p->old_link = -1;
1127 p->old_duplex = -1;
1128 phy_suspend(p->phy);
1129 }
1130
1131 return 0;
1132}
1133
1134int dsa_slave_resume(struct net_device *slave_dev)
1135{
1136 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1137
1138 netif_device_attach(slave_dev);
1139
1140 if (p->phy) {
1141 phy_resume(p->phy);
1142 phy_start(p->phy);
1143 }
1144
1145 return 0;
1146}
1147
Guenter Roeckd87d6f42015-02-24 13:15:32 -08001148int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
Andrew Lunn83c0afa2016-06-04 21:17:07 +02001149 int port, const char *name)
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001150{
Florian Fainellibadf3ad2016-04-27 11:45:14 -07001151 struct dsa_switch_tree *dst = ds->dst;
Andrew Lunn83c0afa2016-06-04 21:17:07 +02001152 struct net_device *master;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001153 struct net_device *slave_dev;
1154 struct dsa_slave_priv *p;
1155 int ret;
1156
Andrew Lunn83c0afa2016-06-04 21:17:07 +02001157 master = ds->dst->master_netdev;
1158 if (ds->master_netdev)
1159 master = ds->master_netdev;
1160
Tom Gundersenc835a672014-07-14 16:37:24 +02001161 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
1162 NET_NAME_UNKNOWN, ether_setup);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001163 if (slave_dev == NULL)
Guenter Roeckd87d6f42015-02-24 13:15:32 -08001164 return -ENOMEM;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001165
1166 slave_dev->features = master->vlan_features;
Wilfried Klaebe7ad24ea2014-05-11 00:12:32 +00001167 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
Bjørn Mork2fcc8002013-08-30 18:08:46 +02001168 eth_hw_addr_inherit(slave_dev, master);
Phil Sutter0a5f1072015-08-18 10:30:41 +02001169 slave_dev->priv_flags |= IFF_NO_QUEUE;
Florian Fainelli3e8a72d2014-08-27 17:04:46 -07001170 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
Jiri Pirko9d47c0a2015-05-10 09:47:47 -07001171 slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
Florian Fainellif37db852015-09-23 18:19:58 -07001172 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
Stephen Hemmingerd442ad42009-01-06 16:45:26 -08001173
Andrew Lunn448b4482015-05-06 01:09:56 +02001174 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1175 NULL);
1176
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001177 SET_NETDEV_DEV(slave_dev, parent);
Andrew Lunn189b0d92016-06-04 21:16:58 +02001178 slave_dev->dev.of_node = ds->ports[port].dn;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001179 slave_dev->vlan_features = master->vlan_features;
1180
1181 p = netdev_priv(slave_dev);
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001182 p->parent = ds;
1183 p->port = port;
Andrew Lunn39a7f2a2016-06-04 21:17:03 +02001184 p->xmit = dst->tag_ops->xmit;
Alexander Duyck50753142014-09-15 13:00:19 -04001185
Florian Fainelli0d8bcdd2014-08-27 17:04:51 -07001186 p->old_pause = -1;
1187 p->old_link = -1;
1188 p->old_duplex = -1;
1189
Andrew Lunnc8b09802016-06-04 21:16:57 +02001190 ds->ports[port].netdev = slave_dev;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001191 ret = register_netdev(slave_dev);
1192 if (ret) {
Joe Perchesa2ae6002014-11-09 16:32:46 -08001193 netdev_err(master, "error %d registering interface %s\n",
1194 ret, slave_dev->name);
Andrew Lunnc8b09802016-06-04 21:16:57 +02001195 ds->ports[port].netdev = NULL;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001196 free_netdev(slave_dev);
Guenter Roeckd87d6f42015-02-24 13:15:32 -08001197 return ret;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001198 }
1199
1200 netif_carrier_off(slave_dev);
1201
Andrew Lunn0071f562016-01-06 20:11:20 +01001202 ret = dsa_slave_phy_setup(p, slave_dev);
1203 if (ret) {
1204 netdev_err(master, "error %d setting up slave phy\n", ret);
Florian Fainelli73dcb552016-02-17 18:43:22 -08001205 unregister_netdev(slave_dev);
Andrew Lunn0071f562016-01-06 20:11:20 +01001206 free_netdev(slave_dev);
1207 return ret;
1208 }
1209
Guenter Roeckd87d6f42015-02-24 13:15:32 -08001210 return 0;
Lennert Buytenhek91da11f2008-10-07 13:44:02 +00001211}
Florian Fainellib73adef2015-02-24 13:15:33 -08001212
Neil Armstrongcda5c152015-12-07 13:57:35 +01001213void dsa_slave_destroy(struct net_device *slave_dev)
1214{
1215 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1216
1217 netif_carrier_off(slave_dev);
1218 if (p->phy)
1219 phy_disconnect(p->phy);
1220 unregister_netdev(slave_dev);
1221 free_netdev(slave_dev);
1222}
1223
Florian Fainellib73adef2015-02-24 13:15:33 -08001224static bool dsa_slave_dev_check(struct net_device *dev)
1225{
1226 return dev->netdev_ops == &dsa_slave_netdev_ops;
1227}
1228
Vivien Didelot6debb682016-03-13 16:21:34 -04001229static int dsa_slave_port_upper_event(struct net_device *dev,
1230 unsigned long event, void *ptr)
Florian Fainellib73adef2015-02-24 13:15:33 -08001231{
Vivien Didelot6debb682016-03-13 16:21:34 -04001232 struct netdev_notifier_changeupper_info *info = ptr;
1233 struct net_device *upper = info->upper_dev;
Florian Fainellib73adef2015-02-24 13:15:33 -08001234 int err = 0;
1235
Vivien Didelot6debb682016-03-13 16:21:34 -04001236 switch (event) {
1237 case NETDEV_CHANGEUPPER:
1238 if (netif_is_bridge_master(upper)) {
1239 if (info->linking)
1240 err = dsa_slave_bridge_port_join(dev, upper);
1241 else
1242 dsa_slave_bridge_port_leave(dev);
1243 }
Florian Fainellib73adef2015-02-24 13:15:33 -08001244
Vivien Didelot6debb682016-03-13 16:21:34 -04001245 break;
1246 }
1247
1248 return notifier_from_errno(err);
1249}
1250
1251static int dsa_slave_port_event(struct net_device *dev, unsigned long event,
1252 void *ptr)
1253{
1254 switch (event) {
1255 case NETDEV_CHANGEUPPER:
1256 return dsa_slave_port_upper_event(dev, event, ptr);
1257 }
1258
1259 return NOTIFY_DONE;
Florian Fainellib73adef2015-02-24 13:15:33 -08001260}
1261
1262int dsa_slave_netdevice_event(struct notifier_block *unused,
1263 unsigned long event, void *ptr)
1264{
Vivien Didelot6debb682016-03-13 16:21:34 -04001265 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
Florian Fainellib73adef2015-02-24 13:15:33 -08001266
Vivien Didelot6debb682016-03-13 16:21:34 -04001267 if (dsa_slave_dev_check(dev))
1268 return dsa_slave_port_event(dev, event, ptr);
Florian Fainellib73adef2015-02-24 13:15:33 -08001269
Florian Fainellib73adef2015-02-24 13:15:33 -08001270 return NOTIFY_DONE;
1271}