Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* -*- linux-c -*- |
3 | * INET 802.1Q VLAN | |
4 | * Ethernet-type device handling. | |
5 | * | |
6 | * Authors: Ben Greear <greearb@candelatech.com> | |
ad712087 | 7 | * Please send support related email to: netdev@vger.kernel.org |
1da177e4 | 8 | * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html |
122952fc | 9 | * |
1da177e4 LT |
10 | * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> |
11 | * - reset skb->pkt_type on incoming packets when MAC was changed | |
12 | * - see that changed MAC is saddr for outgoing packets | |
13 | * Oct 20, 2001: Ard van Breeman: | |
14 | * - Fix MC-list, finally. | |
15 | * - Flush MC-list on VLAN destroy. | |
1da177e4 LT |
16 | */ |
17 | ||
afab2d29 JP |
18 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
19 | ||
1da177e4 | 20 | #include <linux/module.h> |
5a0e3ad6 | 21 | #include <linux/slab.h> |
1da177e4 LT |
22 | #include <linux/skbuff.h> |
23 | #include <linux/netdevice.h> | |
37dd9255 | 24 | #include <linux/net_tstamp.h> |
1da177e4 | 25 | #include <linux/etherdevice.h> |
75b8846a | 26 | #include <linux/ethtool.h> |
ec1d8ccb | 27 | #include <linux/phy.h> |
1da177e4 LT |
28 | #include <net/arp.h> |
29 | ||
30 | #include "vlan.h" | |
31 | #include "vlanproc.h" | |
32 | #include <linux/if_vlan.h> | |
6d4cdf47 | 33 | #include <linux/netpoll.h> |
1da177e4 | 34 | |
1da177e4 | 35 | /* |
122952fc | 36 | * Create the VLAN header for an arbitrary protocol layer |
1da177e4 LT |
37 | * |
38 | * saddr=NULL means use device source address | |
39 | * daddr=NULL means leave destination address (eg unresolved arp) | |
40 | * | |
41 | * This is called when the SKB is moving down the stack towards the | |
42 | * physical devices. | |
43 | */ | |
ef3eb3e5 PM |
44 | static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
45 | unsigned short type, | |
46 | const void *daddr, const void *saddr, | |
47 | unsigned int len) | |
1da177e4 | 48 | { |
1fd9b1fc | 49 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
1da177e4 | 50 | struct vlan_hdr *vhdr; |
1349fe9a | 51 | unsigned int vhdrlen = 0; |
9bb8582e | 52 | u16 vlan_tci = 0; |
1349fe9a | 53 | int rc; |
1da177e4 | 54 | |
0c0667a8 | 55 | if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) { |
d58ff351 | 56 | vhdr = skb_push(skb, VLAN_HLEN); |
1da177e4 | 57 | |
0c0667a8 | 58 | vlan_tci = vlan->vlan_id; |
e267cb96 | 59 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); |
9bb8582e | 60 | vhdr->h_vlan_TCI = htons(vlan_tci); |
1da177e4 LT |
61 | |
62 | /* | |
bf9ae538 OP |
63 | * Set the protocol type. For a packet of type ETH_P_802_3/2 we |
64 | * put the length in here instead. | |
1da177e4 | 65 | */ |
bf9ae538 | 66 | if (type != ETH_P_802_3 && type != ETH_P_802_2) |
1da177e4 | 67 | vhdr->h_vlan_encapsulated_proto = htons(type); |
2029cc2c | 68 | else |
1da177e4 | 69 | vhdr->h_vlan_encapsulated_proto = htons(len); |
279e172a | 70 | |
1fd9b1fc PM |
71 | skb->protocol = vlan->vlan_proto; |
72 | type = ntohs(vlan->vlan_proto); | |
1349fe9a | 73 | vhdrlen = VLAN_HLEN; |
1da177e4 LT |
74 | } |
75 | ||
76 | /* Before delegating work to the lower layer, enter our MAC-address */ | |
77 | if (saddr == NULL) | |
78 | saddr = dev->dev_addr; | |
79 | ||
1349fe9a | 80 | /* Now make the underlying real hard header */ |
0c0667a8 | 81 | dev = vlan->real_dev; |
1349fe9a PM |
82 | rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); |
83 | if (rc > 0) | |
84 | rc += vhdrlen; | |
1da177e4 LT |
85 | return rc; |
86 | } | |
87 | ||
6eacf8ad AW |
88 | static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb) |
89 | { | |
90 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
91 | if (vlan->netpoll) | |
92 | netpoll_send_skb(vlan->netpoll, skb); | |
93 | #else | |
94 | BUG(); | |
95 | #endif | |
96 | return NETDEV_TX_OK; | |
97 | } | |
98 | ||
6fef4c0c SH |
99 | static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, |
100 | struct net_device *dev) | |
1da177e4 | 101 | { |
6eacf8ad | 102 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
1da177e4 | 103 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
1a123a31 ED |
104 | unsigned int len; |
105 | int ret; | |
55b01e86 | 106 | |
1da177e4 LT |
107 | /* Handle non-VLAN frames if they are sent to us, for example by DHCP. |
108 | * | |
109 | * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING | |
110 | * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... | |
111 | */ | |
1fd9b1fc | 112 | if (veth->h_vlan_proto != vlan->vlan_proto || |
6eacf8ad | 113 | vlan->flags & VLAN_FLAG_REORDER_HDR) { |
9bb8582e | 114 | u16 vlan_tci; |
6eacf8ad | 115 | vlan_tci = vlan->vlan_id; |
e267cb96 | 116 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); |
b960a0ac | 117 | __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci); |
1da177e4 LT |
118 | } |
119 | ||
6eacf8ad | 120 | skb->dev = vlan->real_dev; |
1a123a31 | 121 | len = skb->len; |
6eacf8ad AW |
122 | if (unlikely(netpoll_tx_running(dev))) |
123 | return vlan_netpoll_send_skb(vlan, skb); | |
124 | ||
1a123a31 ED |
125 | ret = dev_queue_xmit(skb); |
126 | ||
2d6c9ffc | 127 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
4af429d2 ED |
128 | struct vlan_pcpu_stats *stats; |
129 | ||
6eacf8ad | 130 | stats = this_cpu_ptr(vlan->vlan_pcpu_stats); |
4af429d2 ED |
131 | u64_stats_update_begin(&stats->syncp); |
132 | stats->tx_packets++; | |
133 | stats->tx_bytes += len; | |
307f73df | 134 | u64_stats_update_end(&stats->syncp); |
4af429d2 | 135 | } else { |
6eacf8ad | 136 | this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped); |
4af429d2 | 137 | } |
1a123a31 | 138 | |
cbbef5e1 | 139 | return ret; |
1da177e4 LT |
140 | } |
141 | ||
ef3eb3e5 | 142 | static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 | 143 | { |
18d3df3e PA |
144 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
145 | unsigned int max_mtu = real_dev->mtu; | |
146 | ||
147 | if (netif_reduces_vlan_mtu(real_dev)) | |
148 | max_mtu -= VLAN_HLEN; | |
149 | if (max_mtu < new_mtu) | |
1da177e4 LT |
150 | return -ERANGE; |
151 | ||
152 | dev->mtu = new_mtu; | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
c17d8874 | 157 | void vlan_dev_set_ingress_priority(const struct net_device *dev, |
9bb8582e | 158 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 159 | { |
7da82c06 | 160 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
b020cb48 PM |
161 | |
162 | if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) | |
163 | vlan->nr_ingress_mappings--; | |
164 | else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) | |
165 | vlan->nr_ingress_mappings++; | |
166 | ||
167 | vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; | |
1da177e4 LT |
168 | } |
169 | ||
c17d8874 | 170 | int vlan_dev_set_egress_priority(const struct net_device *dev, |
9bb8582e | 171 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 172 | { |
7da82c06 | 173 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
1da177e4 LT |
174 | struct vlan_priority_tci_mapping *mp = NULL; |
175 | struct vlan_priority_tci_mapping *np; | |
05423b24 | 176 | u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; |
122952fc | 177 | |
c17d8874 | 178 | /* See if a priority mapping exists.. */ |
b020cb48 | 179 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
180 | while (mp) { |
181 | if (mp->priority == skb_prio) { | |
b020cb48 PM |
182 | if (mp->vlan_qos && !vlan_qos) |
183 | vlan->nr_egress_mappings--; | |
184 | else if (!mp->vlan_qos && vlan_qos) | |
185 | vlan->nr_egress_mappings++; | |
186 | mp->vlan_qos = vlan_qos; | |
c17d8874 | 187 | return 0; |
1da177e4 | 188 | } |
c17d8874 | 189 | mp = mp->next; |
1da177e4 | 190 | } |
c17d8874 PM |
191 | |
192 | /* Create a new mapping then. */ | |
b020cb48 | 193 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
194 | np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); |
195 | if (!np) | |
196 | return -ENOBUFS; | |
197 | ||
198 | np->next = mp; | |
199 | np->priority = skb_prio; | |
b020cb48 | 200 | np->vlan_qos = vlan_qos; |
3e3aac49 ED |
201 | /* Before inserting this element in hash table, make sure all its fields |
202 | * are committed to memory. | |
e267cb96 | 203 | * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask() |
3e3aac49 ED |
204 | */ |
205 | smp_wmb(); | |
b020cb48 PM |
206 | vlan->egress_priority_map[skb_prio & 0xF] = np; |
207 | if (vlan_qos) | |
208 | vlan->nr_egress_mappings++; | |
c17d8874 | 209 | return 0; |
1da177e4 LT |
210 | } |
211 | ||
84a2fba2 SL |
212 | /* Flags are defined in the vlan_flags enum in |
213 | * include/uapi/linux/if_vlan.h file. | |
214 | */ | |
b3ce0325 | 215 | int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) |
1da177e4 | 216 | { |
7da82c06 | 217 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
b3ce0325 PM |
218 | u32 old_flags = vlan->flags; |
219 | ||
5e756593 | 220 | if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | |
8c8b3458 MM |
221 | VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP | |
222 | VLAN_FLAG_BRIDGE_BINDING)) | |
b3ce0325 PM |
223 | return -EINVAL; |
224 | ||
225 | vlan->flags = (old_flags & ~mask) | (flags & mask); | |
70c03b49 PM |
226 | |
227 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { | |
228 | if (vlan->flags & VLAN_FLAG_GVRP) | |
229 | vlan_gvrp_request_join(dev); | |
230 | else | |
231 | vlan_gvrp_request_leave(dev); | |
232 | } | |
86fbe9bb DW |
233 | |
234 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) { | |
235 | if (vlan->flags & VLAN_FLAG_MVRP) | |
236 | vlan_mvrp_request_join(dev); | |
237 | else | |
238 | vlan_mvrp_request_leave(dev); | |
239 | } | |
b3ce0325 | 240 | return 0; |
1da177e4 LT |
241 | } |
242 | ||
c17d8874 | 243 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) |
1da177e4 | 244 | { |
7da82c06 | 245 | strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23); |
1da177e4 LT |
246 | } |
247 | ||
308453aa MM |
248 | bool vlan_dev_inherit_address(struct net_device *dev, |
249 | struct net_device *real_dev) | |
250 | { | |
251 | if (dev->addr_assign_type != NET_ADDR_STOLEN) | |
252 | return false; | |
253 | ||
254 | ether_addr_copy(dev->dev_addr, real_dev->dev_addr); | |
255 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); | |
256 | return true; | |
257 | } | |
258 | ||
ef3eb3e5 | 259 | static int vlan_dev_open(struct net_device *dev) |
1da177e4 | 260 | { |
7da82c06 | 261 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
8c979c26 PM |
262 | struct net_device *real_dev = vlan->real_dev; |
263 | int err; | |
264 | ||
5e756593 PM |
265 | if (!(real_dev->flags & IFF_UP) && |
266 | !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) | |
1da177e4 LT |
267 | return -ENETDOWN; |
268 | ||
308453aa MM |
269 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) && |
270 | !vlan_dev_inherit_address(dev, real_dev)) { | |
a748ee24 | 271 | err = dev_uc_add(real_dev, dev->dev_addr); |
8c979c26 | 272 | if (err < 0) |
89146504 | 273 | goto out; |
8c979c26 | 274 | } |
8c979c26 | 275 | |
89146504 WC |
276 | if (dev->flags & IFF_ALLMULTI) { |
277 | err = dev_set_allmulti(real_dev, 1); | |
278 | if (err < 0) | |
279 | goto del_unicast; | |
280 | } | |
281 | if (dev->flags & IFF_PROMISC) { | |
282 | err = dev_set_promiscuity(real_dev, 1); | |
283 | if (err < 0) | |
284 | goto clear_allmulti; | |
285 | } | |
286 | ||
07fc67be | 287 | ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr); |
6c78dcbd | 288 | |
70c03b49 PM |
289 | if (vlan->flags & VLAN_FLAG_GVRP) |
290 | vlan_gvrp_request_join(dev); | |
291 | ||
86fbe9bb DW |
292 | if (vlan->flags & VLAN_FLAG_MVRP) |
293 | vlan_mvrp_request_join(dev); | |
294 | ||
76052d8c MM |
295 | if (netif_carrier_ok(real_dev) && |
296 | !(vlan->flags & VLAN_FLAG_BRIDGE_BINDING)) | |
0ac820ee | 297 | netif_carrier_on(dev); |
1da177e4 | 298 | return 0; |
89146504 WC |
299 | |
300 | clear_allmulti: | |
301 | if (dev->flags & IFF_ALLMULTI) | |
302 | dev_set_allmulti(real_dev, -1); | |
303 | del_unicast: | |
53a2b3a1 | 304 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 305 | dev_uc_del(real_dev, dev->dev_addr); |
89146504 | 306 | out: |
adc667e8 | 307 | netif_carrier_off(dev); |
89146504 | 308 | return err; |
1da177e4 LT |
309 | } |
310 | ||
ef3eb3e5 | 311 | static int vlan_dev_stop(struct net_device *dev) |
1da177e4 | 312 | { |
7da82c06 | 313 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
70c03b49 PM |
314 | struct net_device *real_dev = vlan->real_dev; |
315 | ||
56addd6e | 316 | dev_mc_unsync(real_dev, dev); |
a748ee24 | 317 | dev_uc_unsync(real_dev, dev); |
6c78dcbd PM |
318 | if (dev->flags & IFF_ALLMULTI) |
319 | dev_set_allmulti(real_dev, -1); | |
320 | if (dev->flags & IFF_PROMISC) | |
321 | dev_set_promiscuity(real_dev, -1); | |
322 | ||
53a2b3a1 | 323 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 324 | dev_uc_del(real_dev, dev->dev_addr); |
8c979c26 | 325 | |
76052d8c MM |
326 | if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING)) |
327 | netif_carrier_off(dev); | |
1da177e4 LT |
328 | return 0; |
329 | } | |
330 | ||
ef3eb3e5 | 331 | static int vlan_dev_set_mac_address(struct net_device *dev, void *p) |
39aaac11 | 332 | { |
7da82c06 | 333 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
39aaac11 PM |
334 | struct sockaddr *addr = p; |
335 | int err; | |
336 | ||
337 | if (!is_valid_ether_addr(addr->sa_data)) | |
338 | return -EADDRNOTAVAIL; | |
339 | ||
340 | if (!(dev->flags & IFF_UP)) | |
341 | goto out; | |
342 | ||
53a2b3a1 | 343 | if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) { |
a748ee24 | 344 | err = dev_uc_add(real_dev, addr->sa_data); |
39aaac11 PM |
345 | if (err < 0) |
346 | return err; | |
347 | } | |
348 | ||
53a2b3a1 | 349 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 350 | dev_uc_del(real_dev, dev->dev_addr); |
39aaac11 PM |
351 | |
352 | out: | |
07fc67be | 353 | ether_addr_copy(dev->dev_addr, addr->sa_data); |
39aaac11 PM |
354 | return 0; |
355 | } | |
356 | ||
ef3eb3e5 | 357 | static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1da177e4 | 358 | { |
7da82c06 | 359 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
656299f7 | 360 | const struct net_device_ops *ops = real_dev->netdev_ops; |
1da177e4 LT |
361 | struct ifreq ifrr; |
362 | int err = -EOPNOTSUPP; | |
363 | ||
364 | strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); | |
365 | ifrr.ifr_ifru = ifr->ifr_ifru; | |
366 | ||
2029cc2c | 367 | switch (cmd) { |
873017af HL |
368 | case SIOCSHWTSTAMP: |
369 | if (!net_eq(dev_net(dev), &init_net)) | |
370 | break; | |
fa2c52be | 371 | /* fall through */ |
1da177e4 LT |
372 | case SIOCGMIIPHY: |
373 | case SIOCGMIIREG: | |
374 | case SIOCSMIIREG: | |
a6111d3c | 375 | case SIOCGHWTSTAMP: |
656299f7 SH |
376 | if (netif_device_present(real_dev) && ops->ndo_do_ioctl) |
377 | err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); | |
1da177e4 | 378 | break; |
1da177e4 LT |
379 | } |
380 | ||
122952fc | 381 | if (!err) |
1da177e4 LT |
382 | ifr->ifr_ifru = ifrr.ifr_ifru; |
383 | ||
384 | return err; | |
385 | } | |
386 | ||
cc883d16 FB |
387 | static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) |
388 | { | |
7da82c06 | 389 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
cc883d16 FB |
390 | const struct net_device_ops *ops = real_dev->netdev_ops; |
391 | int err = 0; | |
392 | ||
393 | if (netif_device_present(real_dev) && ops->ndo_neigh_setup) | |
9d40bbda | 394 | err = ops->ndo_neigh_setup(real_dev, pa); |
cc883d16 FB |
395 | |
396 | return err; | |
397 | } | |
398 | ||
f4d5392e | 399 | #if IS_ENABLED(CONFIG_FCOE) |
b85daa53 VD |
400 | static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, |
401 | struct scatterlist *sgl, unsigned int sgc) | |
402 | { | |
7da82c06 | 403 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
b85daa53 VD |
404 | const struct net_device_ops *ops = real_dev->netdev_ops; |
405 | int rc = 0; | |
406 | ||
407 | if (ops->ndo_fcoe_ddp_setup) | |
408 | rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); | |
409 | ||
410 | return rc; | |
411 | } | |
412 | ||
413 | static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) | |
414 | { | |
7da82c06 | 415 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
b85daa53 VD |
416 | const struct net_device_ops *ops = real_dev->netdev_ops; |
417 | int len = 0; | |
418 | ||
419 | if (ops->ndo_fcoe_ddp_done) | |
420 | len = ops->ndo_fcoe_ddp_done(real_dev, xid); | |
421 | ||
422 | return len; | |
423 | } | |
0af46d99 YZ |
424 | |
425 | static int vlan_dev_fcoe_enable(struct net_device *dev) | |
426 | { | |
7da82c06 | 427 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
0af46d99 YZ |
428 | const struct net_device_ops *ops = real_dev->netdev_ops; |
429 | int rc = -EINVAL; | |
430 | ||
431 | if (ops->ndo_fcoe_enable) | |
432 | rc = ops->ndo_fcoe_enable(real_dev); | |
433 | return rc; | |
434 | } | |
435 | ||
436 | static int vlan_dev_fcoe_disable(struct net_device *dev) | |
437 | { | |
7da82c06 | 438 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
0af46d99 YZ |
439 | const struct net_device_ops *ops = real_dev->netdev_ops; |
440 | int rc = -EINVAL; | |
441 | ||
442 | if (ops->ndo_fcoe_disable) | |
443 | rc = ops->ndo_fcoe_disable(real_dev); | |
444 | return rc; | |
445 | } | |
d6534799 | 446 | |
0a89eb92 CL |
447 | static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, |
448 | struct scatterlist *sgl, unsigned int sgc) | |
d6534799 | 449 | { |
7da82c06 | 450 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
d6534799 | 451 | const struct net_device_ops *ops = real_dev->netdev_ops; |
0a89eb92 CL |
452 | int rc = 0; |
453 | ||
454 | if (ops->ndo_fcoe_ddp_target) | |
455 | rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); | |
d6534799 | 456 | |
d6534799 YZ |
457 | return rc; |
458 | } | |
0a89eb92 | 459 | #endif |
4ea09c9c | 460 | |
0a89eb92 CL |
461 | #ifdef NETDEV_FCOE_WWNN |
462 | static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) | |
4ea09c9c | 463 | { |
7da82c06 | 464 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
4ea09c9c | 465 | const struct net_device_ops *ops = real_dev->netdev_ops; |
0a89eb92 | 466 | int rc = -EINVAL; |
4ea09c9c | 467 | |
0a89eb92 CL |
468 | if (ops->ndo_fcoe_get_wwn) |
469 | rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); | |
4ea09c9c YZ |
470 | return rc; |
471 | } | |
b85daa53 VD |
472 | #endif |
473 | ||
ef3eb3e5 | 474 | static void vlan_dev_change_rx_flags(struct net_device *dev, int change) |
6c78dcbd | 475 | { |
7da82c06 | 476 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
6c78dcbd | 477 | |
deede2fa MK |
478 | if (dev->flags & IFF_UP) { |
479 | if (change & IFF_ALLMULTI) | |
480 | dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
481 | if (change & IFF_PROMISC) | |
482 | dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); | |
483 | } | |
6c78dcbd PM |
484 | } |
485 | ||
e83a2ea8 | 486 | static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) |
1da177e4 | 487 | { |
d38569ab VY |
488 | dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); |
489 | dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); | |
1da177e4 | 490 | } |
ef3eb3e5 | 491 | |
d38569ab VY |
492 | static int vlan_dev_get_lock_subclass(struct net_device *dev) |
493 | { | |
494 | return vlan_dev_priv(dev)->nest_level; | |
495 | } | |
496 | ||
ef3eb3e5 PM |
497 | static const struct header_ops vlan_header_ops = { |
498 | .create = vlan_dev_hard_header, | |
ef3eb3e5 PM |
499 | .parse = eth_header_parse, |
500 | }; | |
501 | ||
2205369a DM |
502 | static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev, |
503 | unsigned short type, | |
504 | const void *daddr, const void *saddr, | |
505 | unsigned int len) | |
506 | { | |
507 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); | |
508 | struct net_device *real_dev = vlan->real_dev; | |
509 | ||
dd38743b PB |
510 | if (saddr == NULL) |
511 | saddr = dev->dev_addr; | |
512 | ||
2205369a DM |
513 | return dev_hard_header(skb, real_dev, type, daddr, saddr, len); |
514 | } | |
515 | ||
516 | static const struct header_ops vlan_passthru_header_ops = { | |
517 | .create = vlan_passthru_hard_header, | |
2205369a DM |
518 | .parse = eth_header_parse, |
519 | }; | |
520 | ||
e949b09b DG |
521 | static struct device_type vlan_type = { |
522 | .name = "vlan", | |
523 | }; | |
524 | ||
213b15ca | 525 | static const struct net_device_ops vlan_netdev_ops; |
f7d1b9f5 | 526 | |
ef3eb3e5 PM |
527 | static int vlan_dev_init(struct net_device *dev) |
528 | { | |
76052d8c MM |
529 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
530 | struct net_device *real_dev = vlan->real_dev; | |
ef3eb3e5 | 531 | |
adc667e8 JV |
532 | netif_carrier_off(dev); |
533 | ||
ef3eb3e5 | 534 | /* IFF_BROADCAST|IFF_MULTICAST; ??? */ |
194dbcc8 JF |
535 | dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | |
536 | IFF_MASTER | IFF_SLAVE); | |
ef3eb3e5 PM |
537 | dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | |
538 | (1<<__LINK_STATE_DORMANT))) | | |
539 | (1<<__LINK_STATE_PRESENT); | |
540 | ||
76052d8c MM |
541 | if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING) |
542 | dev->state |= (1 << __LINK_STATE_NOCARRIER); | |
543 | ||
a188222b | 544 | dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | |
53f6b708 | 545 | NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | |
7dad9937 | 546 | NETIF_F_GSO_ENCAP_ALL | |
53692b1d | 547 | NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | |
62f2a3a4 MM |
548 | NETIF_F_ALL_FCOE; |
549 | ||
88997e42 | 550 | dev->features |= dev->hw_features | NETIF_F_LLTX; |
1ae4be22 | 551 | dev->gso_max_size = real_dev->gso_max_size; |
f6773c5e | 552 | dev->gso_max_segs = real_dev->gso_max_segs; |
2adb956b VY |
553 | if (dev->features & NETIF_F_VLAN_FEATURES) |
554 | netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n"); | |
555 | ||
8d463504 | 556 | dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE; |
7dad9937 | 557 | dev->hw_enc_features = vlan_tnl_features(real_dev); |
8b6912a5 | 558 | dev->mpls_features = real_dev->mpls_features; |
5fb13570 | 559 | |
ef3eb3e5 PM |
560 | /* ipv6 shared card related stuff */ |
561 | dev->dev_id = real_dev->dev_id; | |
562 | ||
308453aa MM |
563 | if (is_zero_ether_addr(dev->dev_addr)) { |
564 | ether_addr_copy(dev->dev_addr, real_dev->dev_addr); | |
565 | dev->addr_assign_type = NET_ADDR_STOLEN; | |
566 | } | |
ef3eb3e5 PM |
567 | if (is_zero_ether_addr(dev->broadcast)) |
568 | memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); | |
569 | ||
f4d5392e | 570 | #if IS_ENABLED(CONFIG_FCOE) |
b85daa53 VD |
571 | dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; |
572 | #endif | |
573 | ||
d870bfb9 | 574 | dev->needed_headroom = real_dev->needed_headroom; |
76052d8c | 575 | if (vlan_hw_offload_capable(real_dev->features, vlan->vlan_proto)) { |
2205369a | 576 | dev->header_ops = &vlan_passthru_header_ops; |
ef3eb3e5 | 577 | dev->hard_header_len = real_dev->hard_header_len; |
ef3eb3e5 PM |
578 | } else { |
579 | dev->header_ops = &vlan_header_ops; | |
580 | dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; | |
ef3eb3e5 PM |
581 | } |
582 | ||
213b15ca | 583 | dev->netdev_ops = &vlan_netdev_ops; |
636e19a3 | 584 | |
e949b09b DG |
585 | SET_NETDEV_DEVTYPE(dev, &vlan_type); |
586 | ||
76052d8c MM |
587 | vlan->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); |
588 | if (!vlan->vlan_pcpu_stats) | |
9793241f ED |
589 | return -ENOMEM; |
590 | ||
ef3eb3e5 PM |
591 | return 0; |
592 | } | |
593 | ||
23556323 PE |
594 | static void vlan_dev_uninit(struct net_device *dev) |
595 | { | |
596 | struct vlan_priority_tci_mapping *pm; | |
7da82c06 | 597 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
23556323 PE |
598 | int i; |
599 | ||
600 | for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { | |
601 | while ((pm = vlan->egress_priority_map[i]) != NULL) { | |
602 | vlan->egress_priority_map[i] = pm->next; | |
603 | kfree(pm); | |
604 | } | |
605 | } | |
606 | } | |
607 | ||
c8f44aff MM |
608 | static netdev_features_t vlan_dev_fix_features(struct net_device *dev, |
609 | netdev_features_t features) | |
8a0427bb | 610 | { |
7da82c06 | 611 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
b29d3145 | 612 | netdev_features_t old_features = features; |
8403debe | 613 | netdev_features_t lower_features; |
8a0427bb | 614 | |
8403debe VY |
615 | lower_features = netdev_intersect_features((real_dev->vlan_features | |
616 | NETIF_F_RXCSUM), | |
617 | real_dev->features); | |
712ae51a | 618 | |
8403debe VY |
619 | /* Add HW_CSUM setting to preserve user ability to control |
620 | * checksum offload on the vlan device. | |
621 | */ | |
622 | if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)) | |
623 | lower_features |= NETIF_F_HW_CSUM; | |
624 | features = netdev_intersect_features(features, lower_features); | |
53f6b708 | 625 | features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE); |
f0a619cc | 626 | features |= NETIF_F_LLTX; |
8a0427bb MM |
627 | |
628 | return features; | |
629 | } | |
630 | ||
57709798 DD |
631 | static int vlan_ethtool_get_link_ksettings(struct net_device *dev, |
632 | struct ethtool_link_ksettings *cmd) | |
b3020061 | 633 | { |
7da82c06 | 634 | const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
4bc71cb9 | 635 | |
57709798 | 636 | return __ethtool_get_link_ksettings(vlan->real_dev, cmd); |
b3020061 SH |
637 | } |
638 | ||
639 | static void vlan_ethtool_get_drvinfo(struct net_device *dev, | |
640 | struct ethtool_drvinfo *info) | |
641 | { | |
7826d43f JP |
642 | strlcpy(info->driver, vlan_fullname, sizeof(info->driver)); |
643 | strlcpy(info->version, vlan_version, sizeof(info->version)); | |
644 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
b3020061 SH |
645 | } |
646 | ||
37dd9255 RC |
647 | static int vlan_ethtool_get_ts_info(struct net_device *dev, |
648 | struct ethtool_ts_info *info) | |
649 | { | |
650 | const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); | |
651 | const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops; | |
ec1d8ccb | 652 | struct phy_device *phydev = vlan->real_dev->phydev; |
37dd9255 | 653 | |
ec1d8ccb HL |
654 | if (phydev && phydev->drv && phydev->drv->ts_info) { |
655 | return phydev->drv->ts_info(phydev, info); | |
656 | } else if (ops->get_ts_info) { | |
37dd9255 RC |
657 | return ops->get_ts_info(vlan->real_dev, info); |
658 | } else { | |
659 | info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | | |
660 | SOF_TIMESTAMPING_SOFTWARE; | |
661 | info->phc_index = -1; | |
662 | } | |
663 | ||
664 | return 0; | |
665 | } | |
666 | ||
bc1f4470 | 667 | static void vlan_dev_get_stats64(struct net_device *dev, |
668 | struct rtnl_link_stats64 *stats) | |
9793241f | 669 | { |
5a4ae5f6 LR |
670 | struct vlan_pcpu_stats *p; |
671 | u32 rx_errors = 0, tx_dropped = 0; | |
672 | int i; | |
9793241f | 673 | |
5a4ae5f6 LR |
674 | for_each_possible_cpu(i) { |
675 | u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; | |
676 | unsigned int start; | |
677 | ||
678 | p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i); | |
679 | do { | |
680 | start = u64_stats_fetch_begin_irq(&p->syncp); | |
681 | rxpackets = p->rx_packets; | |
682 | rxbytes = p->rx_bytes; | |
683 | rxmulticast = p->rx_multicast; | |
684 | txpackets = p->tx_packets; | |
685 | txbytes = p->tx_bytes; | |
686 | } while (u64_stats_fetch_retry_irq(&p->syncp, start)); | |
687 | ||
688 | stats->rx_packets += rxpackets; | |
689 | stats->rx_bytes += rxbytes; | |
690 | stats->multicast += rxmulticast; | |
691 | stats->tx_packets += txpackets; | |
692 | stats->tx_bytes += txbytes; | |
693 | /* rx_errors & tx_dropped are u32 */ | |
694 | rx_errors += p->rx_errors; | |
695 | tx_dropped += p->tx_dropped; | |
9793241f | 696 | } |
5a4ae5f6 LR |
697 | stats->rx_errors = rx_errors; |
698 | stats->tx_dropped = tx_dropped; | |
9793241f ED |
699 | } |
700 | ||
6d4cdf47 | 701 | #ifdef CONFIG_NET_POLL_CONTROLLER |
de93cb2e | 702 | static void vlan_dev_poll_controller(struct net_device *dev) |
6d4cdf47 BL |
703 | { |
704 | return; | |
705 | } | |
706 | ||
a8779ec1 | 707 | static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) |
6d4cdf47 | 708 | { |
f3da3893 AW |
709 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
710 | struct net_device *real_dev = vlan->real_dev; | |
6d4cdf47 BL |
711 | struct netpoll *netpoll; |
712 | int err = 0; | |
713 | ||
a8779ec1 | 714 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); |
6d4cdf47 BL |
715 | err = -ENOMEM; |
716 | if (!netpoll) | |
717 | goto out; | |
718 | ||
a8779ec1 | 719 | err = __netpoll_setup(netpoll, real_dev); |
6d4cdf47 BL |
720 | if (err) { |
721 | kfree(netpoll); | |
722 | goto out; | |
723 | } | |
724 | ||
f3da3893 | 725 | vlan->netpoll = netpoll; |
6d4cdf47 BL |
726 | |
727 | out: | |
728 | return err; | |
729 | } | |
730 | ||
de93cb2e | 731 | static void vlan_dev_netpoll_cleanup(struct net_device *dev) |
6d4cdf47 | 732 | { |
f3da3893 AW |
733 | struct vlan_dev_priv *vlan= vlan_dev_priv(dev); |
734 | struct netpoll *netpoll = vlan->netpoll; | |
6d4cdf47 BL |
735 | |
736 | if (!netpoll) | |
737 | return; | |
738 | ||
f3da3893 | 739 | vlan->netpoll = NULL; |
c9fbd71f | 740 | __netpoll_free(netpoll); |
6d4cdf47 BL |
741 | } |
742 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
743 | ||
2dbf6b50 ND |
744 | static int vlan_dev_get_iflink(const struct net_device *dev) |
745 | { | |
746 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; | |
747 | ||
748 | return real_dev->ifindex; | |
749 | } | |
750 | ||
75b8846a | 751 | static const struct ethtool_ops vlan_ethtool_ops = { |
57709798 | 752 | .get_link_ksettings = vlan_ethtool_get_link_ksettings, |
b3020061 | 753 | .get_drvinfo = vlan_ethtool_get_drvinfo, |
75b8846a | 754 | .get_link = ethtool_op_get_link, |
37dd9255 | 755 | .get_ts_info = vlan_ethtool_get_ts_info, |
75b8846a PM |
756 | }; |
757 | ||
656299f7 SH |
758 | static const struct net_device_ops vlan_netdev_ops = { |
759 | .ndo_change_mtu = vlan_dev_change_mtu, | |
760 | .ndo_init = vlan_dev_init, | |
761 | .ndo_uninit = vlan_dev_uninit, | |
762 | .ndo_open = vlan_dev_open, | |
763 | .ndo_stop = vlan_dev_stop, | |
669d3e0b VD |
764 | .ndo_start_xmit = vlan_dev_hard_start_xmit, |
765 | .ndo_validate_addr = eth_validate_addr, | |
766 | .ndo_set_mac_address = vlan_dev_set_mac_address, | |
767 | .ndo_set_rx_mode = vlan_dev_set_rx_mode, | |
669d3e0b VD |
768 | .ndo_change_rx_flags = vlan_dev_change_rx_flags, |
769 | .ndo_do_ioctl = vlan_dev_ioctl, | |
770 | .ndo_neigh_setup = vlan_dev_neigh_setup, | |
9618e2ff | 771 | .ndo_get_stats64 = vlan_dev_get_stats64, |
f4d5392e | 772 | #if IS_ENABLED(CONFIG_FCOE) |
669d3e0b VD |
773 | .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, |
774 | .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, | |
775 | .ndo_fcoe_enable = vlan_dev_fcoe_enable, | |
776 | .ndo_fcoe_disable = vlan_dev_fcoe_disable, | |
4ea09c9c | 777 | .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, |
6d4cdf47 | 778 | #endif |
0a89eb92 CL |
779 | #ifdef NETDEV_FCOE_WWNN |
780 | .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, | |
781 | #endif | |
6d4cdf47 BL |
782 | #ifdef CONFIG_NET_POLL_CONTROLLER |
783 | .ndo_poll_controller = vlan_dev_poll_controller, | |
784 | .ndo_netpoll_setup = vlan_dev_netpoll_setup, | |
785 | .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup, | |
669d3e0b | 786 | #endif |
8a0427bb | 787 | .ndo_fix_features = vlan_dev_fix_features, |
d38569ab | 788 | .ndo_get_lock_subclass = vlan_dev_get_lock_subclass, |
2dbf6b50 | 789 | .ndo_get_iflink = vlan_dev_get_iflink, |
669d3e0b VD |
790 | }; |
791 | ||
a48e5faf ED |
792 | static void vlan_dev_free(struct net_device *dev) |
793 | { | |
794 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); | |
795 | ||
796 | free_percpu(vlan->vlan_pcpu_stats); | |
797 | vlan->vlan_pcpu_stats = NULL; | |
a48e5faf ED |
798 | } |
799 | ||
ef3eb3e5 PM |
800 | void vlan_setup(struct net_device *dev) |
801 | { | |
802 | ether_setup(dev); | |
803 | ||
2e659c05 | 804 | dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE; |
e817af27 | 805 | dev->priv_flags |= IFF_UNICAST_FLT; |
02875878 ED |
806 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
807 | netif_keep_dst(dev); | |
ef3eb3e5 | 808 | |
656299f7 | 809 | dev->netdev_ops = &vlan_netdev_ops; |
cf124db5 DM |
810 | dev->needs_free_netdev = true; |
811 | dev->priv_destructor = vlan_dev_free; | |
75b8846a | 812 | dev->ethtool_ops = &vlan_ethtool_ops; |
ef3eb3e5 | 813 | |
91572088 JW |
814 | dev->min_mtu = 0; |
815 | dev->max_mtu = ETH_MAX_MTU; | |
816 | ||
423049ab | 817 | eth_zero_addr(dev->broadcast); |
ef3eb3e5 | 818 | } |