Loading...
1/*
2 * net/dsa/slave.c - Slave device handling
3 * Copyright (c) 2008-2009 Marvell Semiconductor
4 *
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>
12#include <linux/netdevice.h>
13#include <linux/etherdevice.h>
14#include <linux/phy.h>
15#include "dsa_priv.h"
16
17/* slave mii_bus handling ***************************************************/
18static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
19{
20 struct dsa_switch *ds = bus->priv;
21
22 if (ds->phys_port_mask & (1 << addr))
23 return ds->drv->phy_read(ds, addr, reg);
24
25 return 0xffff;
26}
27
28static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
29{
30 struct dsa_switch *ds = bus->priv;
31
32 if (ds->phys_port_mask & (1 << addr))
33 return ds->drv->phy_write(ds, addr, reg, val);
34
35 return 0;
36}
37
38void dsa_slave_mii_bus_init(struct dsa_switch *ds)
39{
40 ds->slave_mii_bus->priv = (void *)ds;
41 ds->slave_mii_bus->name = "dsa slave smi";
42 ds->slave_mii_bus->read = dsa_slave_phy_read;
43 ds->slave_mii_bus->write = dsa_slave_phy_write;
44 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "%s:%.2x",
45 ds->master_mii_bus->id, ds->pd->sw_addr);
46 ds->slave_mii_bus->parent = &ds->master_mii_bus->dev;
47}
48
49
50/* slave device handling ****************************************************/
51static int dsa_slave_init(struct net_device *dev)
52{
53 struct dsa_slave_priv *p = netdev_priv(dev);
54
55 dev->iflink = p->parent->dst->master_netdev->ifindex;
56
57 return 0;
58}
59
60static int dsa_slave_open(struct net_device *dev)
61{
62 struct dsa_slave_priv *p = netdev_priv(dev);
63 struct net_device *master = p->parent->dst->master_netdev;
64 int err;
65
66 if (!(master->flags & IFF_UP))
67 return -ENETDOWN;
68
69 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
70 err = dev_uc_add(master, dev->dev_addr);
71 if (err < 0)
72 goto out;
73 }
74
75 if (dev->flags & IFF_ALLMULTI) {
76 err = dev_set_allmulti(master, 1);
77 if (err < 0)
78 goto del_unicast;
79 }
80 if (dev->flags & IFF_PROMISC) {
81 err = dev_set_promiscuity(master, 1);
82 if (err < 0)
83 goto clear_allmulti;
84 }
85
86 return 0;
87
88clear_allmulti:
89 if (dev->flags & IFF_ALLMULTI)
90 dev_set_allmulti(master, -1);
91del_unicast:
92 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
93 dev_uc_del(master, dev->dev_addr);
94out:
95 return err;
96}
97
98static int dsa_slave_close(struct net_device *dev)
99{
100 struct dsa_slave_priv *p = netdev_priv(dev);
101 struct net_device *master = p->parent->dst->master_netdev;
102
103 dev_mc_unsync(master, dev);
104 dev_uc_unsync(master, dev);
105 if (dev->flags & IFF_ALLMULTI)
106 dev_set_allmulti(master, -1);
107 if (dev->flags & IFF_PROMISC)
108 dev_set_promiscuity(master, -1);
109
110 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
111 dev_uc_del(master, dev->dev_addr);
112
113 return 0;
114}
115
116static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
117{
118 struct dsa_slave_priv *p = netdev_priv(dev);
119 struct net_device *master = p->parent->dst->master_netdev;
120
121 if (change & IFF_ALLMULTI)
122 dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
123 if (change & IFF_PROMISC)
124 dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
125}
126
127static void dsa_slave_set_rx_mode(struct net_device *dev)
128{
129 struct dsa_slave_priv *p = netdev_priv(dev);
130 struct net_device *master = p->parent->dst->master_netdev;
131
132 dev_mc_sync(master, dev);
133 dev_uc_sync(master, dev);
134}
135
136static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
137{
138 struct dsa_slave_priv *p = netdev_priv(dev);
139 struct net_device *master = p->parent->dst->master_netdev;
140 struct sockaddr *addr = a;
141 int err;
142
143 if (!is_valid_ether_addr(addr->sa_data))
144 return -EADDRNOTAVAIL;
145
146 if (!(dev->flags & IFF_UP))
147 goto out;
148
149 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
150 err = dev_uc_add(master, addr->sa_data);
151 if (err < 0)
152 return err;
153 }
154
155 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
156 dev_uc_del(master, dev->dev_addr);
157
158out:
159 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
160
161 return 0;
162}
163
164static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
165{
166 struct dsa_slave_priv *p = netdev_priv(dev);
167
168 if (p->phy != NULL)
169 return phy_mii_ioctl(p->phy, ifr, cmd);
170
171 return -EOPNOTSUPP;
172}
173
174
175/* ethtool operations *******************************************************/
176static int
177dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
178{
179 struct dsa_slave_priv *p = netdev_priv(dev);
180 int err;
181
182 err = -EOPNOTSUPP;
183 if (p->phy != NULL) {
184 err = phy_read_status(p->phy);
185 if (err == 0)
186 err = phy_ethtool_gset(p->phy, cmd);
187 }
188
189 return err;
190}
191
192static int
193dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
194{
195 struct dsa_slave_priv *p = netdev_priv(dev);
196
197 if (p->phy != NULL)
198 return phy_ethtool_sset(p->phy, cmd);
199
200 return -EOPNOTSUPP;
201}
202
203static void dsa_slave_get_drvinfo(struct net_device *dev,
204 struct ethtool_drvinfo *drvinfo)
205{
206 strncpy(drvinfo->driver, "dsa", 32);
207 strncpy(drvinfo->version, dsa_driver_version, 32);
208 strncpy(drvinfo->fw_version, "N/A", 32);
209 strncpy(drvinfo->bus_info, "platform", 32);
210}
211
212static int dsa_slave_nway_reset(struct net_device *dev)
213{
214 struct dsa_slave_priv *p = netdev_priv(dev);
215
216 if (p->phy != NULL)
217 return genphy_restart_aneg(p->phy);
218
219 return -EOPNOTSUPP;
220}
221
222static u32 dsa_slave_get_link(struct net_device *dev)
223{
224 struct dsa_slave_priv *p = netdev_priv(dev);
225
226 if (p->phy != NULL) {
227 genphy_update_link(p->phy);
228 return p->phy->link;
229 }
230
231 return -EOPNOTSUPP;
232}
233
234static void dsa_slave_get_strings(struct net_device *dev,
235 uint32_t stringset, uint8_t *data)
236{
237 struct dsa_slave_priv *p = netdev_priv(dev);
238 struct dsa_switch *ds = p->parent;
239
240 if (stringset == ETH_SS_STATS) {
241 int len = ETH_GSTRING_LEN;
242
243 strncpy(data, "tx_packets", len);
244 strncpy(data + len, "tx_bytes", len);
245 strncpy(data + 2 * len, "rx_packets", len);
246 strncpy(data + 3 * len, "rx_bytes", len);
247 if (ds->drv->get_strings != NULL)
248 ds->drv->get_strings(ds, p->port, data + 4 * len);
249 }
250}
251
252static void dsa_slave_get_ethtool_stats(struct net_device *dev,
253 struct ethtool_stats *stats,
254 uint64_t *data)
255{
256 struct dsa_slave_priv *p = netdev_priv(dev);
257 struct dsa_switch *ds = p->parent;
258
259 data[0] = p->dev->stats.tx_packets;
260 data[1] = p->dev->stats.tx_bytes;
261 data[2] = p->dev->stats.rx_packets;
262 data[3] = p->dev->stats.rx_bytes;
263 if (ds->drv->get_ethtool_stats != NULL)
264 ds->drv->get_ethtool_stats(ds, p->port, data + 4);
265}
266
267static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
268{
269 struct dsa_slave_priv *p = netdev_priv(dev);
270 struct dsa_switch *ds = p->parent;
271
272 if (sset == ETH_SS_STATS) {
273 int count;
274
275 count = 4;
276 if (ds->drv->get_sset_count != NULL)
277 count += ds->drv->get_sset_count(ds);
278
279 return count;
280 }
281
282 return -EOPNOTSUPP;
283}
284
285static const struct ethtool_ops dsa_slave_ethtool_ops = {
286 .get_settings = dsa_slave_get_settings,
287 .set_settings = dsa_slave_set_settings,
288 .get_drvinfo = dsa_slave_get_drvinfo,
289 .nway_reset = dsa_slave_nway_reset,
290 .get_link = dsa_slave_get_link,
291 .get_strings = dsa_slave_get_strings,
292 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
293 .get_sset_count = dsa_slave_get_sset_count,
294};
295
296#ifdef CONFIG_NET_DSA_TAG_DSA
297static const struct net_device_ops dsa_netdev_ops = {
298 .ndo_init = dsa_slave_init,
299 .ndo_open = dsa_slave_open,
300 .ndo_stop = dsa_slave_close,
301 .ndo_start_xmit = dsa_xmit,
302 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
303 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
304 .ndo_set_mac_address = dsa_slave_set_mac_address,
305 .ndo_do_ioctl = dsa_slave_ioctl,
306};
307#endif
308#ifdef CONFIG_NET_DSA_TAG_EDSA
309static const struct net_device_ops edsa_netdev_ops = {
310 .ndo_init = dsa_slave_init,
311 .ndo_open = dsa_slave_open,
312 .ndo_stop = dsa_slave_close,
313 .ndo_start_xmit = edsa_xmit,
314 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
315 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
316 .ndo_set_mac_address = dsa_slave_set_mac_address,
317 .ndo_do_ioctl = dsa_slave_ioctl,
318};
319#endif
320#ifdef CONFIG_NET_DSA_TAG_TRAILER
321static const struct net_device_ops trailer_netdev_ops = {
322 .ndo_init = dsa_slave_init,
323 .ndo_open = dsa_slave_open,
324 .ndo_stop = dsa_slave_close,
325 .ndo_start_xmit = trailer_xmit,
326 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
327 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
328 .ndo_set_mac_address = dsa_slave_set_mac_address,
329 .ndo_do_ioctl = dsa_slave_ioctl,
330};
331#endif
332
333/* slave device setup *******************************************************/
334struct net_device *
335dsa_slave_create(struct dsa_switch *ds, struct device *parent,
336 int port, char *name)
337{
338 struct net_device *master = ds->dst->master_netdev;
339 struct net_device *slave_dev;
340 struct dsa_slave_priv *p;
341 int ret;
342
343 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv),
344 name, ether_setup);
345 if (slave_dev == NULL)
346 return slave_dev;
347
348 slave_dev->features = master->vlan_features;
349 SET_ETHTOOL_OPS(slave_dev, &dsa_slave_ethtool_ops);
350 memcpy(slave_dev->dev_addr, master->dev_addr, ETH_ALEN);
351 slave_dev->tx_queue_len = 0;
352
353 switch (ds->dst->tag_protocol) {
354#ifdef CONFIG_NET_DSA_TAG_DSA
355 case htons(ETH_P_DSA):
356 slave_dev->netdev_ops = &dsa_netdev_ops;
357 break;
358#endif
359#ifdef CONFIG_NET_DSA_TAG_EDSA
360 case htons(ETH_P_EDSA):
361 slave_dev->netdev_ops = &edsa_netdev_ops;
362 break;
363#endif
364#ifdef CONFIG_NET_DSA_TAG_TRAILER
365 case htons(ETH_P_TRAILER):
366 slave_dev->netdev_ops = &trailer_netdev_ops;
367 break;
368#endif
369 default:
370 BUG();
371 }
372
373 SET_NETDEV_DEV(slave_dev, parent);
374 slave_dev->vlan_features = master->vlan_features;
375
376 p = netdev_priv(slave_dev);
377 p->dev = slave_dev;
378 p->parent = ds;
379 p->port = port;
380 p->phy = ds->slave_mii_bus->phy_map[port];
381
382 ret = register_netdev(slave_dev);
383 if (ret) {
384 printk(KERN_ERR "%s: error %d registering interface %s\n",
385 master->name, ret, slave_dev->name);
386 free_netdev(slave_dev);
387 return NULL;
388 }
389
390 netif_carrier_off(slave_dev);
391
392 if (p->phy != NULL) {
393 phy_attach(slave_dev, dev_name(&p->phy->dev),
394 0, PHY_INTERFACE_MODE_GMII);
395
396 p->phy->autoneg = AUTONEG_ENABLE;
397 p->phy->speed = 0;
398 p->phy->duplex = 0;
399 p->phy->advertising = p->phy->supported | ADVERTISED_Autoneg;
400 phy_start_aneg(p->phy);
401 }
402
403 return slave_dev;
404}
1/*
2 * net/dsa/slave.c - Slave device handling
3 * Copyright (c) 2008-2009 Marvell Semiconductor
4 *
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>
12#include <linux/etherdevice.h>
13#include <linux/netdevice.h>
14#include <linux/phy.h>
15#include <linux/phy_fixed.h>
16#include <linux/of_net.h>
17#include <linux/of_mdio.h>
18#include <linux/mdio.h>
19#include <net/rtnetlink.h>
20#include <net/pkt_cls.h>
21#include <net/tc_act/tc_mirred.h>
22#include <linux/if_bridge.h>
23#include <linux/netpoll.h>
24#include <linux/ptp_classify.h>
25
26#include "dsa_priv.h"
27
28static bool dsa_slave_dev_check(struct net_device *dev);
29
30/* slave mii_bus handling ***************************************************/
31static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
32{
33 struct dsa_switch *ds = bus->priv;
34
35 if (ds->phys_mii_mask & (1 << addr))
36 return ds->ops->phy_read(ds, addr, reg);
37
38 return 0xffff;
39}
40
41static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
42{
43 struct dsa_switch *ds = bus->priv;
44
45 if (ds->phys_mii_mask & (1 << addr))
46 return ds->ops->phy_write(ds, addr, reg, val);
47
48 return 0;
49}
50
51void dsa_slave_mii_bus_init(struct dsa_switch *ds)
52{
53 ds->slave_mii_bus->priv = (void *)ds;
54 ds->slave_mii_bus->name = "dsa slave smi";
55 ds->slave_mii_bus->read = dsa_slave_phy_read;
56 ds->slave_mii_bus->write = dsa_slave_phy_write;
57 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d",
58 ds->dst->index, ds->index);
59 ds->slave_mii_bus->parent = ds->dev;
60 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
61}
62
63
64/* slave device handling ****************************************************/
65static int dsa_slave_get_iflink(const struct net_device *dev)
66{
67 return dsa_slave_to_master(dev)->ifindex;
68}
69
70static int dsa_slave_open(struct net_device *dev)
71{
72 struct net_device *master = dsa_slave_to_master(dev);
73 struct dsa_port *dp = dsa_slave_to_port(dev);
74 int err;
75
76 if (!(master->flags & IFF_UP))
77 return -ENETDOWN;
78
79 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
80 err = dev_uc_add(master, dev->dev_addr);
81 if (err < 0)
82 goto out;
83 }
84
85 if (dev->flags & IFF_ALLMULTI) {
86 err = dev_set_allmulti(master, 1);
87 if (err < 0)
88 goto del_unicast;
89 }
90 if (dev->flags & IFF_PROMISC) {
91 err = dev_set_promiscuity(master, 1);
92 if (err < 0)
93 goto clear_allmulti;
94 }
95
96 err = dsa_port_enable(dp, dev->phydev);
97 if (err)
98 goto clear_promisc;
99
100 if (dev->phydev)
101 phy_start(dev->phydev);
102
103 return 0;
104
105clear_promisc:
106 if (dev->flags & IFF_PROMISC)
107 dev_set_promiscuity(master, -1);
108clear_allmulti:
109 if (dev->flags & IFF_ALLMULTI)
110 dev_set_allmulti(master, -1);
111del_unicast:
112 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
113 dev_uc_del(master, dev->dev_addr);
114out:
115 return err;
116}
117
118static int dsa_slave_close(struct net_device *dev)
119{
120 struct net_device *master = dsa_slave_to_master(dev);
121 struct dsa_port *dp = dsa_slave_to_port(dev);
122
123 if (dev->phydev)
124 phy_stop(dev->phydev);
125
126 dsa_port_disable(dp, dev->phydev);
127
128 dev_mc_unsync(master, dev);
129 dev_uc_unsync(master, dev);
130 if (dev->flags & IFF_ALLMULTI)
131 dev_set_allmulti(master, -1);
132 if (dev->flags & IFF_PROMISC)
133 dev_set_promiscuity(master, -1);
134
135 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
136 dev_uc_del(master, dev->dev_addr);
137
138 return 0;
139}
140
141static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
142{
143 struct net_device *master = dsa_slave_to_master(dev);
144
145 if (change & IFF_ALLMULTI)
146 dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
147 if (change & IFF_PROMISC)
148 dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
149}
150
151static void dsa_slave_set_rx_mode(struct net_device *dev)
152{
153 struct net_device *master = dsa_slave_to_master(dev);
154
155 dev_mc_sync(master, dev);
156 dev_uc_sync(master, dev);
157}
158
159static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
160{
161 struct net_device *master = dsa_slave_to_master(dev);
162 struct sockaddr *addr = a;
163 int err;
164
165 if (!is_valid_ether_addr(addr->sa_data))
166 return -EADDRNOTAVAIL;
167
168 if (!(dev->flags & IFF_UP))
169 goto out;
170
171 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
172 err = dev_uc_add(master, addr->sa_data);
173 if (err < 0)
174 return err;
175 }
176
177 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
178 dev_uc_del(master, dev->dev_addr);
179
180out:
181 ether_addr_copy(dev->dev_addr, addr->sa_data);
182
183 return 0;
184}
185
186struct dsa_slave_dump_ctx {
187 struct net_device *dev;
188 struct sk_buff *skb;
189 struct netlink_callback *cb;
190 int idx;
191};
192
193static int
194dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid,
195 bool is_static, void *data)
196{
197 struct dsa_slave_dump_ctx *dump = data;
198 u32 portid = NETLINK_CB(dump->cb->skb).portid;
199 u32 seq = dump->cb->nlh->nlmsg_seq;
200 struct nlmsghdr *nlh;
201 struct ndmsg *ndm;
202
203 if (dump->idx < dump->cb->args[2])
204 goto skip;
205
206 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
207 sizeof(*ndm), NLM_F_MULTI);
208 if (!nlh)
209 return -EMSGSIZE;
210
211 ndm = nlmsg_data(nlh);
212 ndm->ndm_family = AF_BRIDGE;
213 ndm->ndm_pad1 = 0;
214 ndm->ndm_pad2 = 0;
215 ndm->ndm_flags = NTF_SELF;
216 ndm->ndm_type = 0;
217 ndm->ndm_ifindex = dump->dev->ifindex;
218 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
219
220 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
221 goto nla_put_failure;
222
223 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
224 goto nla_put_failure;
225
226 nlmsg_end(dump->skb, nlh);
227
228skip:
229 dump->idx++;
230 return 0;
231
232nla_put_failure:
233 nlmsg_cancel(dump->skb, nlh);
234 return -EMSGSIZE;
235}
236
237static int
238dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
239 struct net_device *dev, struct net_device *filter_dev,
240 int *idx)
241{
242 struct dsa_port *dp = dsa_slave_to_port(dev);
243 struct dsa_slave_dump_ctx dump = {
244 .dev = dev,
245 .skb = skb,
246 .cb = cb,
247 .idx = *idx,
248 };
249 int err;
250
251 err = dsa_port_fdb_dump(dp, dsa_slave_port_fdb_do_dump, &dump);
252 *idx = dump.idx;
253
254 return err;
255}
256
257static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
258{
259 struct dsa_slave_priv *p = netdev_priv(dev);
260 struct dsa_switch *ds = p->dp->ds;
261 int port = p->dp->index;
262
263 /* Pass through to switch driver if it supports timestamping */
264 switch (cmd) {
265 case SIOCGHWTSTAMP:
266 if (ds->ops->port_hwtstamp_get)
267 return ds->ops->port_hwtstamp_get(ds, port, ifr);
268 break;
269 case SIOCSHWTSTAMP:
270 if (ds->ops->port_hwtstamp_set)
271 return ds->ops->port_hwtstamp_set(ds, port, ifr);
272 break;
273 }
274
275 if (!dev->phydev)
276 return -ENODEV;
277
278 return phy_mii_ioctl(dev->phydev, ifr, cmd);
279}
280
281static int dsa_slave_port_attr_set(struct net_device *dev,
282 const struct switchdev_attr *attr,
283 struct switchdev_trans *trans)
284{
285 struct dsa_port *dp = dsa_slave_to_port(dev);
286 int ret;
287
288 switch (attr->id) {
289 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
290 ret = dsa_port_set_state(dp, attr->u.stp_state, trans);
291 break;
292 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
293 ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering,
294 trans);
295 break;
296 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
297 ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans);
298 break;
299 default:
300 ret = -EOPNOTSUPP;
301 break;
302 }
303
304 return ret;
305}
306
307static int dsa_slave_port_obj_add(struct net_device *dev,
308 const struct switchdev_obj *obj,
309 struct switchdev_trans *trans)
310{
311 struct dsa_port *dp = dsa_slave_to_port(dev);
312 int err;
313
314 /* For the prepare phase, ensure the full set of changes is feasable in
315 * one go in order to signal a failure properly. If an operation is not
316 * supported, return -EOPNOTSUPP.
317 */
318
319 switch (obj->id) {
320 case SWITCHDEV_OBJ_ID_PORT_MDB:
321 err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
322 break;
323 case SWITCHDEV_OBJ_ID_HOST_MDB:
324 /* DSA can directly translate this to a normal MDB add,
325 * but on the CPU port.
326 */
327 err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj),
328 trans);
329 break;
330 case SWITCHDEV_OBJ_ID_PORT_VLAN:
331 err = dsa_port_vlan_add(dp, SWITCHDEV_OBJ_PORT_VLAN(obj),
332 trans);
333 break;
334 default:
335 err = -EOPNOTSUPP;
336 break;
337 }
338
339 return err;
340}
341
342static int dsa_slave_port_obj_del(struct net_device *dev,
343 const struct switchdev_obj *obj)
344{
345 struct dsa_port *dp = dsa_slave_to_port(dev);
346 int err;
347
348 switch (obj->id) {
349 case SWITCHDEV_OBJ_ID_PORT_MDB:
350 err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
351 break;
352 case SWITCHDEV_OBJ_ID_HOST_MDB:
353 /* DSA can directly translate this to a normal MDB add,
354 * but on the CPU port.
355 */
356 err = dsa_port_mdb_del(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj));
357 break;
358 case SWITCHDEV_OBJ_ID_PORT_VLAN:
359 err = dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj));
360 break;
361 default:
362 err = -EOPNOTSUPP;
363 break;
364 }
365
366 return err;
367}
368
369static int dsa_slave_port_attr_get(struct net_device *dev,
370 struct switchdev_attr *attr)
371{
372 struct dsa_port *dp = dsa_slave_to_port(dev);
373 struct dsa_switch *ds = dp->ds;
374 struct dsa_switch_tree *dst = ds->dst;
375
376 switch (attr->id) {
377 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
378 attr->u.ppid.id_len = sizeof(dst->index);
379 memcpy(&attr->u.ppid.id, &dst->index, attr->u.ppid.id_len);
380 break;
381 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
382 attr->u.brport_flags_support = 0;
383 break;
384 default:
385 return -EOPNOTSUPP;
386 }
387
388 return 0;
389}
390
391static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev,
392 struct sk_buff *skb)
393{
394#ifdef CONFIG_NET_POLL_CONTROLLER
395 struct dsa_slave_priv *p = netdev_priv(dev);
396
397 if (p->netpoll)
398 netpoll_send_skb(p->netpoll, skb);
399#else
400 BUG();
401#endif
402 return NETDEV_TX_OK;
403}
404
405static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p,
406 struct sk_buff *skb)
407{
408 struct dsa_switch *ds = p->dp->ds;
409 struct sk_buff *clone;
410 unsigned int type;
411
412 type = ptp_classify_raw(skb);
413 if (type == PTP_CLASS_NONE)
414 return;
415
416 if (!ds->ops->port_txtstamp)
417 return;
418
419 clone = skb_clone_sk(skb);
420 if (!clone)
421 return;
422
423 if (ds->ops->port_txtstamp(ds, p->dp->index, clone, type))
424 return;
425
426 kfree_skb(clone);
427}
428
429static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
430{
431 struct dsa_slave_priv *p = netdev_priv(dev);
432 struct pcpu_sw_netstats *s;
433 struct sk_buff *nskb;
434
435 s = this_cpu_ptr(p->stats64);
436 u64_stats_update_begin(&s->syncp);
437 s->tx_packets++;
438 s->tx_bytes += skb->len;
439 u64_stats_update_end(&s->syncp);
440
441 /* Identify PTP protocol packets, clone them, and pass them to the
442 * switch driver
443 */
444 dsa_skb_tx_timestamp(p, skb);
445
446 /* Transmit function may have to reallocate the original SKB,
447 * in which case it must have freed it. Only free it here on error.
448 */
449 nskb = p->xmit(skb, dev);
450 if (!nskb) {
451 kfree_skb(skb);
452 return NETDEV_TX_OK;
453 }
454
455 /* SKB for netpoll still need to be mangled with the protocol-specific
456 * tag to be successfully transmitted
457 */
458 if (unlikely(netpoll_tx_running(dev)))
459 return dsa_slave_netpoll_send_skb(dev, nskb);
460
461 /* Queue the SKB for transmission on the parent interface, but
462 * do not modify its EtherType
463 */
464 nskb->dev = dsa_slave_to_master(dev);
465 dev_queue_xmit(nskb);
466
467 return NETDEV_TX_OK;
468}
469
470/* ethtool operations *******************************************************/
471
472static void dsa_slave_get_drvinfo(struct net_device *dev,
473 struct ethtool_drvinfo *drvinfo)
474{
475 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
476 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
477 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
478}
479
480static int dsa_slave_get_regs_len(struct net_device *dev)
481{
482 struct dsa_port *dp = dsa_slave_to_port(dev);
483 struct dsa_switch *ds = dp->ds;
484
485 if (ds->ops->get_regs_len)
486 return ds->ops->get_regs_len(ds, dp->index);
487
488 return -EOPNOTSUPP;
489}
490
491static void
492dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
493{
494 struct dsa_port *dp = dsa_slave_to_port(dev);
495 struct dsa_switch *ds = dp->ds;
496
497 if (ds->ops->get_regs)
498 ds->ops->get_regs(ds, dp->index, regs, _p);
499}
500
501static u32 dsa_slave_get_link(struct net_device *dev)
502{
503 if (!dev->phydev)
504 return -ENODEV;
505
506 genphy_update_link(dev->phydev);
507
508 return dev->phydev->link;
509}
510
511static int dsa_slave_get_eeprom_len(struct net_device *dev)
512{
513 struct dsa_port *dp = dsa_slave_to_port(dev);
514 struct dsa_switch *ds = dp->ds;
515
516 if (ds->cd && ds->cd->eeprom_len)
517 return ds->cd->eeprom_len;
518
519 if (ds->ops->get_eeprom_len)
520 return ds->ops->get_eeprom_len(ds);
521
522 return 0;
523}
524
525static int dsa_slave_get_eeprom(struct net_device *dev,
526 struct ethtool_eeprom *eeprom, u8 *data)
527{
528 struct dsa_port *dp = dsa_slave_to_port(dev);
529 struct dsa_switch *ds = dp->ds;
530
531 if (ds->ops->get_eeprom)
532 return ds->ops->get_eeprom(ds, eeprom, data);
533
534 return -EOPNOTSUPP;
535}
536
537static int dsa_slave_set_eeprom(struct net_device *dev,
538 struct ethtool_eeprom *eeprom, u8 *data)
539{
540 struct dsa_port *dp = dsa_slave_to_port(dev);
541 struct dsa_switch *ds = dp->ds;
542
543 if (ds->ops->set_eeprom)
544 return ds->ops->set_eeprom(ds, eeprom, data);
545
546 return -EOPNOTSUPP;
547}
548
549static void dsa_slave_get_strings(struct net_device *dev,
550 uint32_t stringset, uint8_t *data)
551{
552 struct dsa_port *dp = dsa_slave_to_port(dev);
553 struct dsa_switch *ds = dp->ds;
554
555 if (stringset == ETH_SS_STATS) {
556 int len = ETH_GSTRING_LEN;
557
558 strncpy(data, "tx_packets", len);
559 strncpy(data + len, "tx_bytes", len);
560 strncpy(data + 2 * len, "rx_packets", len);
561 strncpy(data + 3 * len, "rx_bytes", len);
562 if (ds->ops->get_strings)
563 ds->ops->get_strings(ds, dp->index, data + 4 * len);
564 }
565}
566
567static void dsa_slave_get_ethtool_stats(struct net_device *dev,
568 struct ethtool_stats *stats,
569 uint64_t *data)
570{
571 struct dsa_port *dp = dsa_slave_to_port(dev);
572 struct dsa_slave_priv *p = netdev_priv(dev);
573 struct dsa_switch *ds = dp->ds;
574 struct pcpu_sw_netstats *s;
575 unsigned int start;
576 int i;
577
578 for_each_possible_cpu(i) {
579 u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
580
581 s = per_cpu_ptr(p->stats64, i);
582 do {
583 start = u64_stats_fetch_begin_irq(&s->syncp);
584 tx_packets = s->tx_packets;
585 tx_bytes = s->tx_bytes;
586 rx_packets = s->rx_packets;
587 rx_bytes = s->rx_bytes;
588 } while (u64_stats_fetch_retry_irq(&s->syncp, start));
589 data[0] += tx_packets;
590 data[1] += tx_bytes;
591 data[2] += rx_packets;
592 data[3] += rx_bytes;
593 }
594 if (ds->ops->get_ethtool_stats)
595 ds->ops->get_ethtool_stats(ds, dp->index, data + 4);
596}
597
598static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
599{
600 struct dsa_port *dp = dsa_slave_to_port(dev);
601 struct dsa_switch *ds = dp->ds;
602
603 if (sset == ETH_SS_STATS) {
604 int count;
605
606 count = 4;
607 if (ds->ops->get_sset_count)
608 count += ds->ops->get_sset_count(ds, dp->index);
609
610 return count;
611 }
612
613 return -EOPNOTSUPP;
614}
615
616static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
617{
618 struct dsa_port *dp = dsa_slave_to_port(dev);
619 struct dsa_switch *ds = dp->ds;
620
621 if (ds->ops->get_wol)
622 ds->ops->get_wol(ds, dp->index, w);
623}
624
625static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
626{
627 struct dsa_port *dp = dsa_slave_to_port(dev);
628 struct dsa_switch *ds = dp->ds;
629 int ret = -EOPNOTSUPP;
630
631 if (ds->ops->set_wol)
632 ret = ds->ops->set_wol(ds, dp->index, w);
633
634 return ret;
635}
636
637static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
638{
639 struct dsa_port *dp = dsa_slave_to_port(dev);
640 struct dsa_switch *ds = dp->ds;
641 int ret;
642
643 /* Port's PHY and MAC both need to be EEE capable */
644 if (!dev->phydev)
645 return -ENODEV;
646
647 if (!ds->ops->set_mac_eee)
648 return -EOPNOTSUPP;
649
650 ret = ds->ops->set_mac_eee(ds, dp->index, e);
651 if (ret)
652 return ret;
653
654 if (e->eee_enabled) {
655 ret = phy_init_eee(dev->phydev, 0);
656 if (ret)
657 return ret;
658 }
659
660 return phy_ethtool_set_eee(dev->phydev, e);
661}
662
663static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
664{
665 struct dsa_port *dp = dsa_slave_to_port(dev);
666 struct dsa_switch *ds = dp->ds;
667 int ret;
668
669 /* Port's PHY and MAC both need to be EEE capable */
670 if (!dev->phydev)
671 return -ENODEV;
672
673 if (!ds->ops->get_mac_eee)
674 return -EOPNOTSUPP;
675
676 ret = ds->ops->get_mac_eee(ds, dp->index, e);
677 if (ret)
678 return ret;
679
680 return phy_ethtool_get_eee(dev->phydev, e);
681}
682
683#ifdef CONFIG_NET_POLL_CONTROLLER
684static int dsa_slave_netpoll_setup(struct net_device *dev,
685 struct netpoll_info *ni)
686{
687 struct net_device *master = dsa_slave_to_master(dev);
688 struct dsa_slave_priv *p = netdev_priv(dev);
689 struct netpoll *netpoll;
690 int err = 0;
691
692 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
693 if (!netpoll)
694 return -ENOMEM;
695
696 err = __netpoll_setup(netpoll, master);
697 if (err) {
698 kfree(netpoll);
699 goto out;
700 }
701
702 p->netpoll = netpoll;
703out:
704 return err;
705}
706
707static void dsa_slave_netpoll_cleanup(struct net_device *dev)
708{
709 struct dsa_slave_priv *p = netdev_priv(dev);
710 struct netpoll *netpoll = p->netpoll;
711
712 if (!netpoll)
713 return;
714
715 p->netpoll = NULL;
716
717 __netpoll_free_async(netpoll);
718}
719
720static void dsa_slave_poll_controller(struct net_device *dev)
721{
722}
723#endif
724
725static int dsa_slave_get_phys_port_name(struct net_device *dev,
726 char *name, size_t len)
727{
728 struct dsa_port *dp = dsa_slave_to_port(dev);
729
730 if (snprintf(name, len, "p%d", dp->index) >= len)
731 return -EINVAL;
732
733 return 0;
734}
735
736static struct dsa_mall_tc_entry *
737dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie)
738{
739 struct dsa_slave_priv *p = netdev_priv(dev);
740 struct dsa_mall_tc_entry *mall_tc_entry;
741
742 list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list)
743 if (mall_tc_entry->cookie == cookie)
744 return mall_tc_entry;
745
746 return NULL;
747}
748
749static int dsa_slave_add_cls_matchall(struct net_device *dev,
750 struct tc_cls_matchall_offload *cls,
751 bool ingress)
752{
753 struct dsa_port *dp = dsa_slave_to_port(dev);
754 struct dsa_slave_priv *p = netdev_priv(dev);
755 struct dsa_mall_tc_entry *mall_tc_entry;
756 __be16 protocol = cls->common.protocol;
757 struct dsa_switch *ds = dp->ds;
758 struct net_device *to_dev;
759 const struct tc_action *a;
760 struct dsa_port *to_dp;
761 int err = -EOPNOTSUPP;
762 LIST_HEAD(actions);
763
764 if (!ds->ops->port_mirror_add)
765 return err;
766
767 if (!tcf_exts_has_one_action(cls->exts))
768 return err;
769
770 tcf_exts_to_list(cls->exts, &actions);
771 a = list_first_entry(&actions, struct tc_action, list);
772
773 if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
774 struct dsa_mall_mirror_tc_entry *mirror;
775
776 to_dev = tcf_mirred_dev(a);
777 if (!to_dev)
778 return -EINVAL;
779
780 if (!dsa_slave_dev_check(to_dev))
781 return -EOPNOTSUPP;
782
783 mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
784 if (!mall_tc_entry)
785 return -ENOMEM;
786
787 mall_tc_entry->cookie = cls->cookie;
788 mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
789 mirror = &mall_tc_entry->mirror;
790
791 to_dp = dsa_slave_to_port(to_dev);
792
793 mirror->to_local_port = to_dp->index;
794 mirror->ingress = ingress;
795
796 err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
797 if (err) {
798 kfree(mall_tc_entry);
799 return err;
800 }
801
802 list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
803 }
804
805 return 0;
806}
807
808static void dsa_slave_del_cls_matchall(struct net_device *dev,
809 struct tc_cls_matchall_offload *cls)
810{
811 struct dsa_port *dp = dsa_slave_to_port(dev);
812 struct dsa_mall_tc_entry *mall_tc_entry;
813 struct dsa_switch *ds = dp->ds;
814
815 if (!ds->ops->port_mirror_del)
816 return;
817
818 mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie);
819 if (!mall_tc_entry)
820 return;
821
822 list_del(&mall_tc_entry->list);
823
824 switch (mall_tc_entry->type) {
825 case DSA_PORT_MALL_MIRROR:
826 ds->ops->port_mirror_del(ds, dp->index, &mall_tc_entry->mirror);
827 break;
828 default:
829 WARN_ON(1);
830 }
831
832 kfree(mall_tc_entry);
833}
834
835static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev,
836 struct tc_cls_matchall_offload *cls,
837 bool ingress)
838{
839 if (cls->common.chain_index)
840 return -EOPNOTSUPP;
841
842 switch (cls->command) {
843 case TC_CLSMATCHALL_REPLACE:
844 return dsa_slave_add_cls_matchall(dev, cls, ingress);
845 case TC_CLSMATCHALL_DESTROY:
846 dsa_slave_del_cls_matchall(dev, cls);
847 return 0;
848 default:
849 return -EOPNOTSUPP;
850 }
851}
852
853static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
854 void *cb_priv, bool ingress)
855{
856 struct net_device *dev = cb_priv;
857
858 if (!tc_can_offload(dev))
859 return -EOPNOTSUPP;
860
861 switch (type) {
862 case TC_SETUP_CLSMATCHALL:
863 return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress);
864 default:
865 return -EOPNOTSUPP;
866 }
867}
868
869static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type,
870 void *type_data, void *cb_priv)
871{
872 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true);
873}
874
875static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type,
876 void *type_data, void *cb_priv)
877{
878 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false);
879}
880
881static int dsa_slave_setup_tc_block(struct net_device *dev,
882 struct tc_block_offload *f)
883{
884 tc_setup_cb_t *cb;
885
886 if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
887 cb = dsa_slave_setup_tc_block_cb_ig;
888 else if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS)
889 cb = dsa_slave_setup_tc_block_cb_eg;
890 else
891 return -EOPNOTSUPP;
892
893 switch (f->command) {
894 case TC_BLOCK_BIND:
895 return tcf_block_cb_register(f->block, cb, dev, dev);
896 case TC_BLOCK_UNBIND:
897 tcf_block_cb_unregister(f->block, cb, dev);
898 return 0;
899 default:
900 return -EOPNOTSUPP;
901 }
902}
903
904static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
905 void *type_data)
906{
907 switch (type) {
908 case TC_SETUP_BLOCK:
909 return dsa_slave_setup_tc_block(dev, type_data);
910 default:
911 return -EOPNOTSUPP;
912 }
913}
914
915static void dsa_slave_get_stats64(struct net_device *dev,
916 struct rtnl_link_stats64 *stats)
917{
918 struct dsa_slave_priv *p = netdev_priv(dev);
919 struct pcpu_sw_netstats *s;
920 unsigned int start;
921 int i;
922
923 netdev_stats_to_stats64(stats, &dev->stats);
924 for_each_possible_cpu(i) {
925 u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
926
927 s = per_cpu_ptr(p->stats64, i);
928 do {
929 start = u64_stats_fetch_begin_irq(&s->syncp);
930 tx_packets = s->tx_packets;
931 tx_bytes = s->tx_bytes;
932 rx_packets = s->rx_packets;
933 rx_bytes = s->rx_bytes;
934 } while (u64_stats_fetch_retry_irq(&s->syncp, start));
935
936 stats->tx_packets += tx_packets;
937 stats->tx_bytes += tx_bytes;
938 stats->rx_packets += rx_packets;
939 stats->rx_bytes += rx_bytes;
940 }
941}
942
943static int dsa_slave_get_rxnfc(struct net_device *dev,
944 struct ethtool_rxnfc *nfc, u32 *rule_locs)
945{
946 struct dsa_port *dp = dsa_slave_to_port(dev);
947 struct dsa_switch *ds = dp->ds;
948
949 if (!ds->ops->get_rxnfc)
950 return -EOPNOTSUPP;
951
952 return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs);
953}
954
955static int dsa_slave_set_rxnfc(struct net_device *dev,
956 struct ethtool_rxnfc *nfc)
957{
958 struct dsa_port *dp = dsa_slave_to_port(dev);
959 struct dsa_switch *ds = dp->ds;
960
961 if (!ds->ops->set_rxnfc)
962 return -EOPNOTSUPP;
963
964 return ds->ops->set_rxnfc(ds, dp->index, nfc);
965}
966
967static int dsa_slave_get_ts_info(struct net_device *dev,
968 struct ethtool_ts_info *ts)
969{
970 struct dsa_slave_priv *p = netdev_priv(dev);
971 struct dsa_switch *ds = p->dp->ds;
972
973 if (!ds->ops->get_ts_info)
974 return -EOPNOTSUPP;
975
976 return ds->ops->get_ts_info(ds, p->dp->index, ts);
977}
978
979static const struct ethtool_ops dsa_slave_ethtool_ops = {
980 .get_drvinfo = dsa_slave_get_drvinfo,
981 .get_regs_len = dsa_slave_get_regs_len,
982 .get_regs = dsa_slave_get_regs,
983 .nway_reset = phy_ethtool_nway_reset,
984 .get_link = dsa_slave_get_link,
985 .get_eeprom_len = dsa_slave_get_eeprom_len,
986 .get_eeprom = dsa_slave_get_eeprom,
987 .set_eeprom = dsa_slave_set_eeprom,
988 .get_strings = dsa_slave_get_strings,
989 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
990 .get_sset_count = dsa_slave_get_sset_count,
991 .set_wol = dsa_slave_set_wol,
992 .get_wol = dsa_slave_get_wol,
993 .set_eee = dsa_slave_set_eee,
994 .get_eee = dsa_slave_get_eee,
995 .get_link_ksettings = phy_ethtool_get_link_ksettings,
996 .set_link_ksettings = phy_ethtool_set_link_ksettings,
997 .get_rxnfc = dsa_slave_get_rxnfc,
998 .set_rxnfc = dsa_slave_set_rxnfc,
999 .get_ts_info = dsa_slave_get_ts_info,
1000};
1001
1002/* legacy way, bypassing the bridge *****************************************/
1003int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
1004 struct net_device *dev,
1005 const unsigned char *addr, u16 vid,
1006 u16 flags)
1007{
1008 struct dsa_port *dp = dsa_slave_to_port(dev);
1009
1010 return dsa_port_fdb_add(dp, addr, vid);
1011}
1012
1013int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
1014 struct net_device *dev,
1015 const unsigned char *addr, u16 vid)
1016{
1017 struct dsa_port *dp = dsa_slave_to_port(dev);
1018
1019 return dsa_port_fdb_del(dp, addr, vid);
1020}
1021
1022static const struct net_device_ops dsa_slave_netdev_ops = {
1023 .ndo_open = dsa_slave_open,
1024 .ndo_stop = dsa_slave_close,
1025 .ndo_start_xmit = dsa_slave_xmit,
1026 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
1027 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
1028 .ndo_set_mac_address = dsa_slave_set_mac_address,
1029 .ndo_fdb_add = dsa_legacy_fdb_add,
1030 .ndo_fdb_del = dsa_legacy_fdb_del,
1031 .ndo_fdb_dump = dsa_slave_fdb_dump,
1032 .ndo_do_ioctl = dsa_slave_ioctl,
1033 .ndo_get_iflink = dsa_slave_get_iflink,
1034#ifdef CONFIG_NET_POLL_CONTROLLER
1035 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
1036 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
1037 .ndo_poll_controller = dsa_slave_poll_controller,
1038#endif
1039 .ndo_get_phys_port_name = dsa_slave_get_phys_port_name,
1040 .ndo_setup_tc = dsa_slave_setup_tc,
1041 .ndo_get_stats64 = dsa_slave_get_stats64,
1042};
1043
1044static const struct switchdev_ops dsa_slave_switchdev_ops = {
1045 .switchdev_port_attr_get = dsa_slave_port_attr_get,
1046 .switchdev_port_attr_set = dsa_slave_port_attr_set,
1047 .switchdev_port_obj_add = dsa_slave_port_obj_add,
1048 .switchdev_port_obj_del = dsa_slave_port_obj_del,
1049};
1050
1051static struct device_type dsa_type = {
1052 .name = "dsa",
1053};
1054
1055static void dsa_slave_adjust_link(struct net_device *dev)
1056{
1057 struct dsa_port *dp = dsa_slave_to_port(dev);
1058 struct dsa_slave_priv *p = netdev_priv(dev);
1059 struct dsa_switch *ds = dp->ds;
1060 unsigned int status_changed = 0;
1061
1062 if (p->old_link != dev->phydev->link) {
1063 status_changed = 1;
1064 p->old_link = dev->phydev->link;
1065 }
1066
1067 if (p->old_duplex != dev->phydev->duplex) {
1068 status_changed = 1;
1069 p->old_duplex = dev->phydev->duplex;
1070 }
1071
1072 if (p->old_pause != dev->phydev->pause) {
1073 status_changed = 1;
1074 p->old_pause = dev->phydev->pause;
1075 }
1076
1077 if (ds->ops->adjust_link && status_changed)
1078 ds->ops->adjust_link(ds, dp->index, dev->phydev);
1079
1080 if (status_changed)
1081 phy_print_status(dev->phydev);
1082}
1083
1084static int dsa_slave_fixed_link_update(struct net_device *dev,
1085 struct fixed_phy_status *status)
1086{
1087 struct dsa_switch *ds;
1088 struct dsa_port *dp;
1089
1090 if (dev) {
1091 dp = dsa_slave_to_port(dev);
1092 ds = dp->ds;
1093 if (ds->ops->fixed_link_update)
1094 ds->ops->fixed_link_update(ds, dp->index, status);
1095 }
1096
1097 return 0;
1098}
1099
1100/* slave device setup *******************************************************/
1101static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr)
1102{
1103 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1104 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1105 struct dsa_switch *ds = dp->ds;
1106
1107 slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr);
1108 if (!slave_dev->phydev) {
1109 netdev_err(slave_dev, "no phy at %d\n", addr);
1110 return -ENODEV;
1111 }
1112
1113 /* Use already configured phy mode */
1114 if (p->phy_interface == PHY_INTERFACE_MODE_NA)
1115 p->phy_interface = slave_dev->phydev->interface;
1116
1117 return phy_connect_direct(slave_dev, slave_dev->phydev,
1118 dsa_slave_adjust_link, p->phy_interface);
1119}
1120
1121static int dsa_slave_phy_setup(struct net_device *slave_dev)
1122{
1123 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1124 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1125 struct device_node *port_dn = dp->dn;
1126 struct dsa_switch *ds = dp->ds;
1127 struct device_node *phy_dn;
1128 bool phy_is_fixed = false;
1129 u32 phy_flags = 0;
1130 int mode, ret;
1131
1132 mode = of_get_phy_mode(port_dn);
1133 if (mode < 0)
1134 mode = PHY_INTERFACE_MODE_NA;
1135 p->phy_interface = mode;
1136
1137 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
1138 if (!phy_dn && of_phy_is_fixed_link(port_dn)) {
1139 /* In the case of a fixed PHY, the DT node associated
1140 * to the fixed PHY is the Port DT node
1141 */
1142 ret = of_phy_register_fixed_link(port_dn);
1143 if (ret) {
1144 netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
1145 return ret;
1146 }
1147 phy_is_fixed = true;
1148 phy_dn = of_node_get(port_dn);
1149 }
1150
1151 if (ds->ops->get_phy_flags)
1152 phy_flags = ds->ops->get_phy_flags(ds, dp->index);
1153
1154 if (phy_dn) {
1155 slave_dev->phydev = of_phy_connect(slave_dev, phy_dn,
1156 dsa_slave_adjust_link,
1157 phy_flags,
1158 p->phy_interface);
1159 of_node_put(phy_dn);
1160 }
1161
1162 if (slave_dev->phydev && phy_is_fixed)
1163 fixed_phy_set_link_update(slave_dev->phydev,
1164 dsa_slave_fixed_link_update);
1165
1166 /* We could not connect to a designated PHY, so use the switch internal
1167 * MDIO bus instead
1168 */
1169 if (!slave_dev->phydev) {
1170 ret = dsa_slave_phy_connect(slave_dev, dp->index);
1171 if (ret) {
1172 netdev_err(slave_dev, "failed to connect to port %d: %d\n",
1173 dp->index, ret);
1174 if (phy_is_fixed)
1175 of_phy_deregister_fixed_link(port_dn);
1176 return ret;
1177 }
1178 }
1179
1180 phy_attached_info(slave_dev->phydev);
1181
1182 return 0;
1183}
1184
1185static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1186static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1187 struct netdev_queue *txq,
1188 void *_unused)
1189{
1190 lockdep_set_class(&txq->_xmit_lock,
1191 &dsa_slave_netdev_xmit_lock_key);
1192}
1193
1194int dsa_slave_suspend(struct net_device *slave_dev)
1195{
1196 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1197
1198 netif_device_detach(slave_dev);
1199
1200 if (slave_dev->phydev) {
1201 phy_stop(slave_dev->phydev);
1202 p->old_pause = -1;
1203 p->old_link = -1;
1204 p->old_duplex = -1;
1205 phy_suspend(slave_dev->phydev);
1206 }
1207
1208 return 0;
1209}
1210
1211int dsa_slave_resume(struct net_device *slave_dev)
1212{
1213 netif_device_attach(slave_dev);
1214
1215 if (slave_dev->phydev) {
1216 phy_resume(slave_dev->phydev);
1217 phy_start(slave_dev->phydev);
1218 }
1219
1220 return 0;
1221}
1222
1223static void dsa_slave_notify(struct net_device *dev, unsigned long val)
1224{
1225 struct net_device *master = dsa_slave_to_master(dev);
1226 struct dsa_port *dp = dsa_slave_to_port(dev);
1227 struct dsa_notifier_register_info rinfo = {
1228 .switch_number = dp->ds->index,
1229 .port_number = dp->index,
1230 .master = master,
1231 .info.dev = dev,
1232 };
1233
1234 call_dsa_notifiers(val, dev, &rinfo.info);
1235}
1236
1237int dsa_slave_create(struct dsa_port *port)
1238{
1239 const struct dsa_port *cpu_dp = port->cpu_dp;
1240 struct net_device *master = cpu_dp->master;
1241 struct dsa_switch *ds = port->ds;
1242 const char *name = port->name;
1243 struct net_device *slave_dev;
1244 struct dsa_slave_priv *p;
1245 int ret;
1246
1247 if (!ds->num_tx_queues)
1248 ds->num_tx_queues = 1;
1249
1250 slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name,
1251 NET_NAME_UNKNOWN, ether_setup,
1252 ds->num_tx_queues, 1);
1253 if (slave_dev == NULL)
1254 return -ENOMEM;
1255
1256 slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
1257 slave_dev->hw_features |= NETIF_F_HW_TC;
1258 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1259 eth_hw_addr_inherit(slave_dev, master);
1260 slave_dev->priv_flags |= IFF_NO_QUEUE;
1261 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1262 slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
1263 slave_dev->min_mtu = 0;
1264 slave_dev->max_mtu = ETH_MAX_MTU;
1265 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1266
1267 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1268 NULL);
1269
1270 SET_NETDEV_DEV(slave_dev, port->ds->dev);
1271 slave_dev->dev.of_node = port->dn;
1272 slave_dev->vlan_features = master->vlan_features;
1273
1274 p = netdev_priv(slave_dev);
1275 p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
1276 if (!p->stats64) {
1277 free_netdev(slave_dev);
1278 return -ENOMEM;
1279 }
1280 p->dp = port;
1281 INIT_LIST_HEAD(&p->mall_tc_list);
1282 p->xmit = cpu_dp->tag_ops->xmit;
1283
1284 p->old_pause = -1;
1285 p->old_link = -1;
1286 p->old_duplex = -1;
1287
1288 port->slave = slave_dev;
1289
1290 netif_carrier_off(slave_dev);
1291
1292 ret = dsa_slave_phy_setup(slave_dev);
1293 if (ret) {
1294 netdev_err(master, "error %d setting up slave phy\n", ret);
1295 goto out_free;
1296 }
1297
1298 dsa_slave_notify(slave_dev, DSA_PORT_REGISTER);
1299
1300 ret = register_netdev(slave_dev);
1301 if (ret) {
1302 netdev_err(master, "error %d registering interface %s\n",
1303 ret, slave_dev->name);
1304 goto out_phy;
1305 }
1306
1307 return 0;
1308
1309out_phy:
1310 phy_disconnect(slave_dev->phydev);
1311 if (of_phy_is_fixed_link(port->dn))
1312 of_phy_deregister_fixed_link(port->dn);
1313out_free:
1314 free_percpu(p->stats64);
1315 free_netdev(slave_dev);
1316 port->slave = NULL;
1317 return ret;
1318}
1319
1320void dsa_slave_destroy(struct net_device *slave_dev)
1321{
1322 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1323 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1324 struct device_node *port_dn = dp->dn;
1325
1326 netif_carrier_off(slave_dev);
1327 if (slave_dev->phydev) {
1328 phy_disconnect(slave_dev->phydev);
1329
1330 if (of_phy_is_fixed_link(port_dn))
1331 of_phy_deregister_fixed_link(port_dn);
1332 }
1333 dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER);
1334 unregister_netdev(slave_dev);
1335 free_percpu(p->stats64);
1336 free_netdev(slave_dev);
1337}
1338
1339static bool dsa_slave_dev_check(struct net_device *dev)
1340{
1341 return dev->netdev_ops == &dsa_slave_netdev_ops;
1342}
1343
1344static int dsa_slave_changeupper(struct net_device *dev,
1345 struct netdev_notifier_changeupper_info *info)
1346{
1347 struct dsa_port *dp = dsa_slave_to_port(dev);
1348 int err = NOTIFY_DONE;
1349
1350 if (netif_is_bridge_master(info->upper_dev)) {
1351 if (info->linking) {
1352 err = dsa_port_bridge_join(dp, info->upper_dev);
1353 err = notifier_from_errno(err);
1354 } else {
1355 dsa_port_bridge_leave(dp, info->upper_dev);
1356 err = NOTIFY_OK;
1357 }
1358 }
1359
1360 return err;
1361}
1362
1363static int dsa_slave_netdevice_event(struct notifier_block *nb,
1364 unsigned long event, void *ptr)
1365{
1366 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1367
1368 if (!dsa_slave_dev_check(dev))
1369 return NOTIFY_DONE;
1370
1371 if (event == NETDEV_CHANGEUPPER)
1372 return dsa_slave_changeupper(dev, ptr);
1373
1374 return NOTIFY_DONE;
1375}
1376
1377struct dsa_switchdev_event_work {
1378 struct work_struct work;
1379 struct switchdev_notifier_fdb_info fdb_info;
1380 struct net_device *dev;
1381 unsigned long event;
1382};
1383
1384static void dsa_slave_switchdev_event_work(struct work_struct *work)
1385{
1386 struct dsa_switchdev_event_work *switchdev_work =
1387 container_of(work, struct dsa_switchdev_event_work, work);
1388 struct net_device *dev = switchdev_work->dev;
1389 struct switchdev_notifier_fdb_info *fdb_info;
1390 struct dsa_port *dp = dsa_slave_to_port(dev);
1391 int err;
1392
1393 rtnl_lock();
1394 switch (switchdev_work->event) {
1395 case SWITCHDEV_FDB_ADD_TO_DEVICE:
1396 fdb_info = &switchdev_work->fdb_info;
1397 err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid);
1398 if (err) {
1399 netdev_dbg(dev, "fdb add failed err=%d\n", err);
1400 break;
1401 }
1402 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
1403 &fdb_info->info);
1404 break;
1405
1406 case SWITCHDEV_FDB_DEL_TO_DEVICE:
1407 fdb_info = &switchdev_work->fdb_info;
1408 err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid);
1409 if (err) {
1410 netdev_dbg(dev, "fdb del failed err=%d\n", err);
1411 dev_close(dev);
1412 }
1413 break;
1414 }
1415 rtnl_unlock();
1416
1417 kfree(switchdev_work->fdb_info.addr);
1418 kfree(switchdev_work);
1419 dev_put(dev);
1420}
1421
1422static int
1423dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work *
1424 switchdev_work,
1425 const struct switchdev_notifier_fdb_info *
1426 fdb_info)
1427{
1428 memcpy(&switchdev_work->fdb_info, fdb_info,
1429 sizeof(switchdev_work->fdb_info));
1430 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
1431 if (!switchdev_work->fdb_info.addr)
1432 return -ENOMEM;
1433 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
1434 fdb_info->addr);
1435 return 0;
1436}
1437
1438/* Called under rcu_read_lock() */
1439static int dsa_slave_switchdev_event(struct notifier_block *unused,
1440 unsigned long event, void *ptr)
1441{
1442 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1443 struct dsa_switchdev_event_work *switchdev_work;
1444
1445 if (!dsa_slave_dev_check(dev))
1446 return NOTIFY_DONE;
1447
1448 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
1449 if (!switchdev_work)
1450 return NOTIFY_BAD;
1451
1452 INIT_WORK(&switchdev_work->work,
1453 dsa_slave_switchdev_event_work);
1454 switchdev_work->dev = dev;
1455 switchdev_work->event = event;
1456
1457 switch (event) {
1458 case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */
1459 case SWITCHDEV_FDB_DEL_TO_DEVICE:
1460 if (dsa_slave_switchdev_fdb_work_init(switchdev_work,
1461 ptr))
1462 goto err_fdb_work_init;
1463 dev_hold(dev);
1464 break;
1465 default:
1466 kfree(switchdev_work);
1467 return NOTIFY_DONE;
1468 }
1469
1470 dsa_schedule_work(&switchdev_work->work);
1471 return NOTIFY_OK;
1472
1473err_fdb_work_init:
1474 kfree(switchdev_work);
1475 return NOTIFY_BAD;
1476}
1477
1478static struct notifier_block dsa_slave_nb __read_mostly = {
1479 .notifier_call = dsa_slave_netdevice_event,
1480};
1481
1482static struct notifier_block dsa_slave_switchdev_notifier = {
1483 .notifier_call = dsa_slave_switchdev_event,
1484};
1485
1486int dsa_slave_register_notifier(void)
1487{
1488 int err;
1489
1490 err = register_netdevice_notifier(&dsa_slave_nb);
1491 if (err)
1492 return err;
1493
1494 err = register_switchdev_notifier(&dsa_slave_switchdev_notifier);
1495 if (err)
1496 goto err_switchdev_nb;
1497
1498 return 0;
1499
1500err_switchdev_nb:
1501 unregister_netdevice_notifier(&dsa_slave_nb);
1502 return err;
1503}
1504
1505void dsa_slave_unregister_notifier(void)
1506{
1507 int err;
1508
1509 err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
1510 if (err)
1511 pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err);
1512
1513 err = unregister_netdevice_notifier(&dsa_slave_nb);
1514 if (err)
1515 pr_err("DSA: failed to unregister slave notifier (%d)\n", err);
1516}