Commit | Line | Data |
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1da177e4 LT |
1 | /* -*- linux-c -*- |
2 | * INET 802.1Q VLAN | |
3 | * Ethernet-type device handling. | |
4 | * | |
5 | * Authors: Ben Greear <greearb@candelatech.com> | |
ad712087 | 6 | * Please send support related email to: netdev@vger.kernel.org |
1da177e4 | 7 | * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html |
122952fc | 8 | * |
1da177e4 LT |
9 | * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> |
10 | * - reset skb->pkt_type on incoming packets when MAC was changed | |
11 | * - see that changed MAC is saddr for outgoing packets | |
12 | * Oct 20, 2001: Ard van Breeman: | |
13 | * - Fix MC-list, finally. | |
14 | * - Flush MC-list on VLAN destroy. | |
122952fc | 15 | * |
1da177e4 LT |
16 | * |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License | |
19 | * as published by the Free Software Foundation; either version | |
20 | * 2 of the License, or (at your option) any later version. | |
21 | */ | |
22 | ||
afab2d29 JP |
23 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
24 | ||
1da177e4 | 25 | #include <linux/module.h> |
5a0e3ad6 | 26 | #include <linux/slab.h> |
1da177e4 LT |
27 | #include <linux/skbuff.h> |
28 | #include <linux/netdevice.h> | |
29 | #include <linux/etherdevice.h> | |
75b8846a | 30 | #include <linux/ethtool.h> |
1da177e4 LT |
31 | #include <net/arp.h> |
32 | ||
33 | #include "vlan.h" | |
34 | #include "vlanproc.h" | |
35 | #include <linux/if_vlan.h> | |
6d4cdf47 | 36 | #include <linux/netpoll.h> |
1da177e4 LT |
37 | |
38 | /* | |
39 | * Rebuild the Ethernet MAC header. This is called after an ARP | |
40 | * (or in future other address resolution) has completed on this | |
41 | * sk_buff. We now let ARP fill in the other fields. | |
42 | * | |
43 | * This routine CANNOT use cached dst->neigh! | |
44 | * Really, it is used only when dst->neigh is wrong. | |
45 | * | |
46 | * TODO: This needs a checkup, I'm ignorant here. --BLG | |
47 | */ | |
ef3eb3e5 | 48 | static int vlan_dev_rebuild_header(struct sk_buff *skb) |
1da177e4 LT |
49 | { |
50 | struct net_device *dev = skb->dev; | |
51 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); | |
52 | ||
53 | switch (veth->h_vlan_encapsulated_proto) { | |
54 | #ifdef CONFIG_INET | |
60678040 | 55 | case htons(ETH_P_IP): |
1da177e4 LT |
56 | |
57 | /* TODO: Confirm this will work with VLAN headers... */ | |
58 | return arp_find(veth->h_dest, skb); | |
122952fc | 59 | #endif |
1da177e4 | 60 | default: |
afab2d29 | 61 | pr_debug("%s: unable to resolve type %X addresses\n", |
40f98e1a | 62 | dev->name, ntohs(veth->h_vlan_encapsulated_proto)); |
122952fc | 63 | |
1da177e4 LT |
64 | memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); |
65 | break; | |
3ff50b79 | 66 | } |
1da177e4 LT |
67 | |
68 | return 0; | |
69 | } | |
70 | ||
9bb8582e | 71 | static inline u16 |
d3243539 | 72 | __vlan_dev_get_egress_qos_mask(struct net_device *dev, u32 skprio) |
1da177e4 | 73 | { |
2029cc2c | 74 | struct vlan_priority_tci_mapping *mp; |
1da177e4 | 75 | |
3e3aac49 ED |
76 | smp_rmb(); /* coupled with smp_wmb() in vlan_dev_set_egress_priority() */ |
77 | ||
d3243539 | 78 | mp = vlan_dev_priv(dev)->egress_priority_map[(skprio & 0xF)]; |
1da177e4 | 79 | while (mp) { |
d3243539 | 80 | if (mp->priority == skprio) { |
2029cc2c PM |
81 | return mp->vlan_qos; /* This should already be shifted |
82 | * to mask correctly with the | |
83 | * VLAN's TCI */ | |
1da177e4 LT |
84 | } |
85 | mp = mp->next; | |
86 | } | |
87 | return 0; | |
88 | } | |
89 | ||
d3243539 EP |
90 | u16 vlan_dev_get_egress_qos_mask(struct net_device *dev, u32 skprio) |
91 | { | |
92 | return __vlan_dev_get_egress_qos_mask(dev, skprio); | |
93 | } | |
94 | EXPORT_SYMBOL(vlan_dev_get_egress_qos_mask); | |
95 | ||
1da177e4 | 96 | /* |
122952fc | 97 | * Create the VLAN header for an arbitrary protocol layer |
1da177e4 LT |
98 | * |
99 | * saddr=NULL means use device source address | |
100 | * daddr=NULL means leave destination address (eg unresolved arp) | |
101 | * | |
102 | * This is called when the SKB is moving down the stack towards the | |
103 | * physical devices. | |
104 | */ | |
ef3eb3e5 PM |
105 | static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
106 | unsigned short type, | |
107 | const void *daddr, const void *saddr, | |
108 | unsigned int len) | |
1da177e4 | 109 | { |
1fd9b1fc | 110 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
1da177e4 | 111 | struct vlan_hdr *vhdr; |
1349fe9a | 112 | unsigned int vhdrlen = 0; |
9bb8582e | 113 | u16 vlan_tci = 0; |
1349fe9a | 114 | int rc; |
1da177e4 | 115 | |
0c0667a8 | 116 | if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) { |
1da177e4 LT |
117 | vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); |
118 | ||
0c0667a8 | 119 | vlan_tci = vlan->vlan_id; |
d3243539 | 120 | vlan_tci |= __vlan_dev_get_egress_qos_mask(dev, skb->priority); |
9bb8582e | 121 | vhdr->h_vlan_TCI = htons(vlan_tci); |
1da177e4 LT |
122 | |
123 | /* | |
bf9ae538 OP |
124 | * Set the protocol type. For a packet of type ETH_P_802_3/2 we |
125 | * put the length in here instead. | |
1da177e4 | 126 | */ |
bf9ae538 | 127 | if (type != ETH_P_802_3 && type != ETH_P_802_2) |
1da177e4 | 128 | vhdr->h_vlan_encapsulated_proto = htons(type); |
2029cc2c | 129 | else |
1da177e4 | 130 | vhdr->h_vlan_encapsulated_proto = htons(len); |
279e172a | 131 | |
1fd9b1fc PM |
132 | skb->protocol = vlan->vlan_proto; |
133 | type = ntohs(vlan->vlan_proto); | |
1349fe9a | 134 | vhdrlen = VLAN_HLEN; |
1da177e4 LT |
135 | } |
136 | ||
137 | /* Before delegating work to the lower layer, enter our MAC-address */ | |
138 | if (saddr == NULL) | |
139 | saddr = dev->dev_addr; | |
140 | ||
1349fe9a | 141 | /* Now make the underlying real hard header */ |
0c0667a8 | 142 | dev = vlan->real_dev; |
1349fe9a PM |
143 | rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); |
144 | if (rc > 0) | |
145 | rc += vhdrlen; | |
1da177e4 LT |
146 | return rc; |
147 | } | |
148 | ||
6eacf8ad AW |
149 | static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb) |
150 | { | |
151 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
152 | if (vlan->netpoll) | |
153 | netpoll_send_skb(vlan->netpoll, skb); | |
154 | #else | |
155 | BUG(); | |
156 | #endif | |
157 | return NETDEV_TX_OK; | |
158 | } | |
159 | ||
6fef4c0c SH |
160 | static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, |
161 | struct net_device *dev) | |
1da177e4 | 162 | { |
6eacf8ad | 163 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
1da177e4 | 164 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
1a123a31 ED |
165 | unsigned int len; |
166 | int ret; | |
55b01e86 | 167 | |
1da177e4 LT |
168 | /* Handle non-VLAN frames if they are sent to us, for example by DHCP. |
169 | * | |
170 | * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING | |
171 | * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... | |
172 | */ | |
1fd9b1fc | 173 | if (veth->h_vlan_proto != vlan->vlan_proto || |
6eacf8ad | 174 | vlan->flags & VLAN_FLAG_REORDER_HDR) { |
9bb8582e | 175 | u16 vlan_tci; |
6eacf8ad | 176 | vlan_tci = vlan->vlan_id; |
d3243539 | 177 | vlan_tci |= __vlan_dev_get_egress_qos_mask(dev, skb->priority); |
86a9bad3 | 178 | skb = __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci); |
1da177e4 LT |
179 | } |
180 | ||
6eacf8ad | 181 | skb->dev = vlan->real_dev; |
1a123a31 | 182 | len = skb->len; |
6eacf8ad AW |
183 | if (unlikely(netpoll_tx_running(dev))) |
184 | return vlan_netpoll_send_skb(vlan, skb); | |
185 | ||
1a123a31 ED |
186 | ret = dev_queue_xmit(skb); |
187 | ||
2d6c9ffc | 188 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
4af429d2 ED |
189 | struct vlan_pcpu_stats *stats; |
190 | ||
6eacf8ad | 191 | stats = this_cpu_ptr(vlan->vlan_pcpu_stats); |
4af429d2 ED |
192 | u64_stats_update_begin(&stats->syncp); |
193 | stats->tx_packets++; | |
194 | stats->tx_bytes += len; | |
307f73df | 195 | u64_stats_update_end(&stats->syncp); |
4af429d2 | 196 | } else { |
6eacf8ad | 197 | this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped); |
4af429d2 | 198 | } |
1a123a31 | 199 | |
cbbef5e1 | 200 | return ret; |
1da177e4 LT |
201 | } |
202 | ||
ef3eb3e5 | 203 | static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 LT |
204 | { |
205 | /* TODO: gotta make sure the underlying layer can handle it, | |
206 | * maybe an IFF_VLAN_CAPABLE flag for devices? | |
207 | */ | |
7da82c06 | 208 | if (vlan_dev_priv(dev)->real_dev->mtu < new_mtu) |
1da177e4 LT |
209 | return -ERANGE; |
210 | ||
211 | dev->mtu = new_mtu; | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
c17d8874 | 216 | void vlan_dev_set_ingress_priority(const struct net_device *dev, |
9bb8582e | 217 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 218 | { |
7da82c06 | 219 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
b020cb48 PM |
220 | |
221 | if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) | |
222 | vlan->nr_ingress_mappings--; | |
223 | else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) | |
224 | vlan->nr_ingress_mappings++; | |
225 | ||
226 | vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; | |
1da177e4 LT |
227 | } |
228 | ||
c17d8874 | 229 | int vlan_dev_set_egress_priority(const struct net_device *dev, |
9bb8582e | 230 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 231 | { |
7da82c06 | 232 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
1da177e4 LT |
233 | struct vlan_priority_tci_mapping *mp = NULL; |
234 | struct vlan_priority_tci_mapping *np; | |
05423b24 | 235 | u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; |
122952fc | 236 | |
c17d8874 | 237 | /* See if a priority mapping exists.. */ |
b020cb48 | 238 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
239 | while (mp) { |
240 | if (mp->priority == skb_prio) { | |
b020cb48 PM |
241 | if (mp->vlan_qos && !vlan_qos) |
242 | vlan->nr_egress_mappings--; | |
243 | else if (!mp->vlan_qos && vlan_qos) | |
244 | vlan->nr_egress_mappings++; | |
245 | mp->vlan_qos = vlan_qos; | |
c17d8874 | 246 | return 0; |
1da177e4 | 247 | } |
c17d8874 | 248 | mp = mp->next; |
1da177e4 | 249 | } |
c17d8874 PM |
250 | |
251 | /* Create a new mapping then. */ | |
b020cb48 | 252 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
253 | np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); |
254 | if (!np) | |
255 | return -ENOBUFS; | |
256 | ||
257 | np->next = mp; | |
258 | np->priority = skb_prio; | |
b020cb48 | 259 | np->vlan_qos = vlan_qos; |
3e3aac49 ED |
260 | /* Before inserting this element in hash table, make sure all its fields |
261 | * are committed to memory. | |
d3243539 | 262 | * coupled with smp_rmb() in __vlan_dev_get_egress_qos_mask() |
3e3aac49 ED |
263 | */ |
264 | smp_wmb(); | |
b020cb48 PM |
265 | vlan->egress_priority_map[skb_prio & 0xF] = np; |
266 | if (vlan_qos) | |
267 | vlan->nr_egress_mappings++; | |
c17d8874 | 268 | return 0; |
1da177e4 LT |
269 | } |
270 | ||
a4bf3af4 | 271 | /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ |
b3ce0325 | 272 | int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) |
1da177e4 | 273 | { |
7da82c06 | 274 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
b3ce0325 PM |
275 | u32 old_flags = vlan->flags; |
276 | ||
5e756593 | 277 | if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | |
86fbe9bb | 278 | VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP)) |
b3ce0325 PM |
279 | return -EINVAL; |
280 | ||
281 | vlan->flags = (old_flags & ~mask) | (flags & mask); | |
70c03b49 PM |
282 | |
283 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { | |
284 | if (vlan->flags & VLAN_FLAG_GVRP) | |
285 | vlan_gvrp_request_join(dev); | |
286 | else | |
287 | vlan_gvrp_request_leave(dev); | |
288 | } | |
86fbe9bb DW |
289 | |
290 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) { | |
291 | if (vlan->flags & VLAN_FLAG_MVRP) | |
292 | vlan_mvrp_request_join(dev); | |
293 | else | |
294 | vlan_mvrp_request_leave(dev); | |
295 | } | |
b3ce0325 | 296 | return 0; |
1da177e4 LT |
297 | } |
298 | ||
c17d8874 | 299 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) |
1da177e4 | 300 | { |
7da82c06 | 301 | strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23); |
1da177e4 LT |
302 | } |
303 | ||
ef3eb3e5 | 304 | static int vlan_dev_open(struct net_device *dev) |
1da177e4 | 305 | { |
7da82c06 | 306 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
8c979c26 PM |
307 | struct net_device *real_dev = vlan->real_dev; |
308 | int err; | |
309 | ||
5e756593 PM |
310 | if (!(real_dev->flags & IFF_UP) && |
311 | !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) | |
1da177e4 LT |
312 | return -ENETDOWN; |
313 | ||
53a2b3a1 | 314 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) { |
a748ee24 | 315 | err = dev_uc_add(real_dev, dev->dev_addr); |
8c979c26 | 316 | if (err < 0) |
89146504 | 317 | goto out; |
8c979c26 | 318 | } |
8c979c26 | 319 | |
89146504 WC |
320 | if (dev->flags & IFF_ALLMULTI) { |
321 | err = dev_set_allmulti(real_dev, 1); | |
322 | if (err < 0) | |
323 | goto del_unicast; | |
324 | } | |
325 | if (dev->flags & IFF_PROMISC) { | |
326 | err = dev_set_promiscuity(real_dev, 1); | |
327 | if (err < 0) | |
328 | goto clear_allmulti; | |
329 | } | |
330 | ||
331 | memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); | |
6c78dcbd | 332 | |
70c03b49 PM |
333 | if (vlan->flags & VLAN_FLAG_GVRP) |
334 | vlan_gvrp_request_join(dev); | |
335 | ||
86fbe9bb DW |
336 | if (vlan->flags & VLAN_FLAG_MVRP) |
337 | vlan_mvrp_request_join(dev); | |
338 | ||
0ac820ee PO |
339 | if (netif_carrier_ok(real_dev)) |
340 | netif_carrier_on(dev); | |
1da177e4 | 341 | return 0; |
89146504 WC |
342 | |
343 | clear_allmulti: | |
344 | if (dev->flags & IFF_ALLMULTI) | |
345 | dev_set_allmulti(real_dev, -1); | |
346 | del_unicast: | |
53a2b3a1 | 347 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 348 | dev_uc_del(real_dev, dev->dev_addr); |
89146504 | 349 | out: |
adc667e8 | 350 | netif_carrier_off(dev); |
89146504 | 351 | return err; |
1da177e4 LT |
352 | } |
353 | ||
ef3eb3e5 | 354 | static int vlan_dev_stop(struct net_device *dev) |
1da177e4 | 355 | { |
7da82c06 | 356 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
70c03b49 PM |
357 | struct net_device *real_dev = vlan->real_dev; |
358 | ||
56addd6e | 359 | dev_mc_unsync(real_dev, dev); |
a748ee24 | 360 | dev_uc_unsync(real_dev, dev); |
6c78dcbd PM |
361 | if (dev->flags & IFF_ALLMULTI) |
362 | dev_set_allmulti(real_dev, -1); | |
363 | if (dev->flags & IFF_PROMISC) | |
364 | dev_set_promiscuity(real_dev, -1); | |
365 | ||
53a2b3a1 | 366 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 367 | dev_uc_del(real_dev, dev->dev_addr); |
8c979c26 | 368 | |
adc667e8 | 369 | netif_carrier_off(dev); |
1da177e4 LT |
370 | return 0; |
371 | } | |
372 | ||
ef3eb3e5 | 373 | static int vlan_dev_set_mac_address(struct net_device *dev, void *p) |
39aaac11 | 374 | { |
7da82c06 | 375 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
39aaac11 PM |
376 | struct sockaddr *addr = p; |
377 | int err; | |
378 | ||
379 | if (!is_valid_ether_addr(addr->sa_data)) | |
380 | return -EADDRNOTAVAIL; | |
381 | ||
382 | if (!(dev->flags & IFF_UP)) | |
383 | goto out; | |
384 | ||
53a2b3a1 | 385 | if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) { |
a748ee24 | 386 | err = dev_uc_add(real_dev, addr->sa_data); |
39aaac11 PM |
387 | if (err < 0) |
388 | return err; | |
389 | } | |
390 | ||
53a2b3a1 | 391 | if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 392 | dev_uc_del(real_dev, dev->dev_addr); |
39aaac11 PM |
393 | |
394 | out: | |
395 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
396 | return 0; | |
397 | } | |
398 | ||
ef3eb3e5 | 399 | static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1da177e4 | 400 | { |
7da82c06 | 401 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
656299f7 | 402 | const struct net_device_ops *ops = real_dev->netdev_ops; |
1da177e4 LT |
403 | struct ifreq ifrr; |
404 | int err = -EOPNOTSUPP; | |
405 | ||
406 | strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); | |
407 | ifrr.ifr_ifru = ifr->ifr_ifru; | |
408 | ||
2029cc2c | 409 | switch (cmd) { |
1da177e4 LT |
410 | case SIOCGMIIPHY: |
411 | case SIOCGMIIREG: | |
412 | case SIOCSMIIREG: | |
656299f7 SH |
413 | if (netif_device_present(real_dev) && ops->ndo_do_ioctl) |
414 | err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); | |
1da177e4 | 415 | break; |
1da177e4 LT |
416 | } |
417 | ||
122952fc | 418 | if (!err) |
1da177e4 LT |
419 | ifr->ifr_ifru = ifrr.ifr_ifru; |
420 | ||
421 | return err; | |
422 | } | |
423 | ||
cc883d16 FB |
424 | static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) |
425 | { | |
7da82c06 | 426 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
cc883d16 FB |
427 | const struct net_device_ops *ops = real_dev->netdev_ops; |
428 | int err = 0; | |
429 | ||
430 | if (netif_device_present(real_dev) && ops->ndo_neigh_setup) | |
9d40bbda | 431 | err = ops->ndo_neigh_setup(real_dev, pa); |
cc883d16 FB |
432 | |
433 | return err; | |
434 | } | |
435 | ||
f4d5392e | 436 | #if IS_ENABLED(CONFIG_FCOE) |
b85daa53 VD |
437 | static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, |
438 | struct scatterlist *sgl, unsigned int sgc) | |
439 | { | |
7da82c06 | 440 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
b85daa53 VD |
441 | const struct net_device_ops *ops = real_dev->netdev_ops; |
442 | int rc = 0; | |
443 | ||
444 | if (ops->ndo_fcoe_ddp_setup) | |
445 | rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); | |
446 | ||
447 | return rc; | |
448 | } | |
449 | ||
450 | static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) | |
451 | { | |
7da82c06 | 452 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
b85daa53 VD |
453 | const struct net_device_ops *ops = real_dev->netdev_ops; |
454 | int len = 0; | |
455 | ||
456 | if (ops->ndo_fcoe_ddp_done) | |
457 | len = ops->ndo_fcoe_ddp_done(real_dev, xid); | |
458 | ||
459 | return len; | |
460 | } | |
0af46d99 YZ |
461 | |
462 | static int vlan_dev_fcoe_enable(struct net_device *dev) | |
463 | { | |
7da82c06 | 464 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
0af46d99 YZ |
465 | const struct net_device_ops *ops = real_dev->netdev_ops; |
466 | int rc = -EINVAL; | |
467 | ||
468 | if (ops->ndo_fcoe_enable) | |
469 | rc = ops->ndo_fcoe_enable(real_dev); | |
470 | return rc; | |
471 | } | |
472 | ||
473 | static int vlan_dev_fcoe_disable(struct net_device *dev) | |
474 | { | |
7da82c06 | 475 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
0af46d99 YZ |
476 | const struct net_device_ops *ops = real_dev->netdev_ops; |
477 | int rc = -EINVAL; | |
478 | ||
479 | if (ops->ndo_fcoe_disable) | |
480 | rc = ops->ndo_fcoe_disable(real_dev); | |
481 | return rc; | |
482 | } | |
d6534799 YZ |
483 | |
484 | static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) | |
485 | { | |
7da82c06 | 486 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
d6534799 YZ |
487 | const struct net_device_ops *ops = real_dev->netdev_ops; |
488 | int rc = -EINVAL; | |
489 | ||
490 | if (ops->ndo_fcoe_get_wwn) | |
491 | rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); | |
492 | return rc; | |
493 | } | |
4ea09c9c YZ |
494 | |
495 | static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, | |
496 | struct scatterlist *sgl, unsigned int sgc) | |
497 | { | |
7da82c06 | 498 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
4ea09c9c YZ |
499 | const struct net_device_ops *ops = real_dev->netdev_ops; |
500 | int rc = 0; | |
501 | ||
502 | if (ops->ndo_fcoe_ddp_target) | |
503 | rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); | |
504 | ||
505 | return rc; | |
506 | } | |
b85daa53 VD |
507 | #endif |
508 | ||
ef3eb3e5 | 509 | static void vlan_dev_change_rx_flags(struct net_device *dev, int change) |
6c78dcbd | 510 | { |
7da82c06 | 511 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
6c78dcbd | 512 | |
deede2fa MK |
513 | if (dev->flags & IFF_UP) { |
514 | if (change & IFF_ALLMULTI) | |
515 | dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
516 | if (change & IFF_PROMISC) | |
517 | dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); | |
518 | } | |
6c78dcbd PM |
519 | } |
520 | ||
e83a2ea8 | 521 | static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) |
1da177e4 | 522 | { |
7da82c06 JP |
523 | dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); |
524 | dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); | |
1da177e4 | 525 | } |
ef3eb3e5 PM |
526 | |
527 | /* | |
528 | * vlan network devices have devices nesting below it, and are a special | |
529 | * "super class" of normal network devices; split their locks off into a | |
530 | * separate class since they always nest. | |
531 | */ | |
532 | static struct lock_class_key vlan_netdev_xmit_lock_key; | |
cf508b12 | 533 | static struct lock_class_key vlan_netdev_addr_lock_key; |
ef3eb3e5 | 534 | |
e8a0464c DM |
535 | static void vlan_dev_set_lockdep_one(struct net_device *dev, |
536 | struct netdev_queue *txq, | |
537 | void *_subclass) | |
c773e847 DM |
538 | { |
539 | lockdep_set_class_and_subclass(&txq->_xmit_lock, | |
e8a0464c DM |
540 | &vlan_netdev_xmit_lock_key, |
541 | *(int *)_subclass); | |
c773e847 DM |
542 | } |
543 | ||
544 | static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) | |
545 | { | |
cf508b12 DM |
546 | lockdep_set_class_and_subclass(&dev->addr_list_lock, |
547 | &vlan_netdev_addr_lock_key, | |
548 | subclass); | |
e8a0464c | 549 | netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); |
c773e847 DM |
550 | } |
551 | ||
ef3eb3e5 PM |
552 | static const struct header_ops vlan_header_ops = { |
553 | .create = vlan_dev_hard_header, | |
554 | .rebuild = vlan_dev_rebuild_header, | |
555 | .parse = eth_header_parse, | |
556 | }; | |
557 | ||
e949b09b DG |
558 | static struct device_type vlan_type = { |
559 | .name = "vlan", | |
560 | }; | |
561 | ||
213b15ca | 562 | static const struct net_device_ops vlan_netdev_ops; |
f7d1b9f5 | 563 | |
ef3eb3e5 PM |
564 | static int vlan_dev_init(struct net_device *dev) |
565 | { | |
7da82c06 | 566 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
ef3eb3e5 PM |
567 | int subclass = 0; |
568 | ||
adc667e8 JV |
569 | netif_carrier_off(dev); |
570 | ||
ef3eb3e5 | 571 | /* IFF_BROADCAST|IFF_MULTICAST; ??? */ |
194dbcc8 JF |
572 | dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | |
573 | IFF_MASTER | IFF_SLAVE); | |
ef3eb3e5 PM |
574 | dev->iflink = real_dev->ifindex; |
575 | dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | | |
576 | (1<<__LINK_STATE_DORMANT))) | | |
577 | (1<<__LINK_STATE_PRESENT); | |
578 | ||
62f2a3a4 MM |
579 | dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG | |
580 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | | |
581 | NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM | | |
582 | NETIF_F_ALL_FCOE; | |
583 | ||
8a0427bb | 584 | dev->features |= real_dev->vlan_features | NETIF_F_LLTX; |
1ae4be22 | 585 | dev->gso_max_size = real_dev->gso_max_size; |
5fb13570 | 586 | |
ef3eb3e5 PM |
587 | /* ipv6 shared card related stuff */ |
588 | dev->dev_id = real_dev->dev_id; | |
589 | ||
590 | if (is_zero_ether_addr(dev->dev_addr)) | |
6b93f4a1 | 591 | eth_hw_addr_inherit(dev, real_dev); |
ef3eb3e5 PM |
592 | if (is_zero_ether_addr(dev->broadcast)) |
593 | memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); | |
594 | ||
f4d5392e | 595 | #if IS_ENABLED(CONFIG_FCOE) |
b85daa53 VD |
596 | dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; |
597 | #endif | |
598 | ||
d870bfb9 | 599 | dev->needed_headroom = real_dev->needed_headroom; |
f646968f | 600 | if (real_dev->features & NETIF_F_HW_VLAN_CTAG_TX) { |
ef3eb3e5 PM |
601 | dev->header_ops = real_dev->header_ops; |
602 | dev->hard_header_len = real_dev->hard_header_len; | |
ef3eb3e5 PM |
603 | } else { |
604 | dev->header_ops = &vlan_header_ops; | |
605 | dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; | |
ef3eb3e5 PM |
606 | } |
607 | ||
213b15ca | 608 | dev->netdev_ops = &vlan_netdev_ops; |
636e19a3 | 609 | |
e949b09b DG |
610 | SET_NETDEV_DEVTYPE(dev, &vlan_type); |
611 | ||
26a25239 | 612 | if (is_vlan_dev(real_dev)) |
ef3eb3e5 PM |
613 | subclass = 1; |
614 | ||
c773e847 | 615 | vlan_dev_set_lockdep_class(dev, subclass); |
9793241f | 616 | |
7da82c06 JP |
617 | vlan_dev_priv(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats); |
618 | if (!vlan_dev_priv(dev)->vlan_pcpu_stats) | |
9793241f ED |
619 | return -ENOMEM; |
620 | ||
ef3eb3e5 PM |
621 | return 0; |
622 | } | |
623 | ||
23556323 PE |
624 | static void vlan_dev_uninit(struct net_device *dev) |
625 | { | |
626 | struct vlan_priority_tci_mapping *pm; | |
7da82c06 | 627 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
23556323 PE |
628 | int i; |
629 | ||
4af429d2 ED |
630 | free_percpu(vlan->vlan_pcpu_stats); |
631 | vlan->vlan_pcpu_stats = NULL; | |
23556323 PE |
632 | for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { |
633 | while ((pm = vlan->egress_priority_map[i]) != NULL) { | |
634 | vlan->egress_priority_map[i] = pm->next; | |
635 | kfree(pm); | |
636 | } | |
637 | } | |
638 | } | |
639 | ||
c8f44aff MM |
640 | static netdev_features_t vlan_dev_fix_features(struct net_device *dev, |
641 | netdev_features_t features) | |
8a0427bb | 642 | { |
7da82c06 | 643 | struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; |
b29d3145 | 644 | netdev_features_t old_features = features; |
8a0427bb | 645 | |
f0a619cc | 646 | features &= real_dev->vlan_features; |
bc5787c6 MM |
647 | features |= NETIF_F_RXCSUM; |
648 | features &= real_dev->features; | |
712ae51a | 649 | |
6c9c1b54 | 650 | features |= old_features & NETIF_F_SOFT_FEATURES; |
f0a619cc | 651 | features |= NETIF_F_LLTX; |
8a0427bb MM |
652 | |
653 | return features; | |
654 | } | |
655 | ||
b3020061 SH |
656 | static int vlan_ethtool_get_settings(struct net_device *dev, |
657 | struct ethtool_cmd *cmd) | |
658 | { | |
7da82c06 | 659 | const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
4bc71cb9 JP |
660 | |
661 | return __ethtool_get_settings(vlan->real_dev, cmd); | |
b3020061 SH |
662 | } |
663 | ||
664 | static void vlan_ethtool_get_drvinfo(struct net_device *dev, | |
665 | struct ethtool_drvinfo *info) | |
666 | { | |
7826d43f JP |
667 | strlcpy(info->driver, vlan_fullname, sizeof(info->driver)); |
668 | strlcpy(info->version, vlan_version, sizeof(info->version)); | |
669 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
b3020061 SH |
670 | } |
671 | ||
28172739 | 672 | static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
9793241f | 673 | { |
9793241f | 674 | |
7da82c06 | 675 | if (vlan_dev_priv(dev)->vlan_pcpu_stats) { |
4af429d2 ED |
676 | struct vlan_pcpu_stats *p; |
677 | u32 rx_errors = 0, tx_dropped = 0; | |
9793241f ED |
678 | int i; |
679 | ||
680 | for_each_possible_cpu(i) { | |
4af429d2 | 681 | u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; |
9618e2ff ED |
682 | unsigned int start; |
683 | ||
7da82c06 | 684 | p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i); |
9618e2ff ED |
685 | do { |
686 | start = u64_stats_fetch_begin_bh(&p->syncp); | |
687 | rxpackets = p->rx_packets; | |
688 | rxbytes = p->rx_bytes; | |
689 | rxmulticast = p->rx_multicast; | |
4af429d2 ED |
690 | txpackets = p->tx_packets; |
691 | txbytes = p->tx_bytes; | |
9618e2ff | 692 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); |
4af429d2 ED |
693 | |
694 | stats->rx_packets += rxpackets; | |
695 | stats->rx_bytes += rxbytes; | |
696 | stats->multicast += rxmulticast; | |
697 | stats->tx_packets += txpackets; | |
698 | stats->tx_bytes += txbytes; | |
699 | /* rx_errors & tx_dropped are u32 */ | |
700 | rx_errors += p->rx_errors; | |
701 | tx_dropped += p->tx_dropped; | |
9793241f | 702 | } |
4af429d2 ED |
703 | stats->rx_errors = rx_errors; |
704 | stats->tx_dropped = tx_dropped; | |
9793241f ED |
705 | } |
706 | return stats; | |
707 | } | |
708 | ||
6d4cdf47 | 709 | #ifdef CONFIG_NET_POLL_CONTROLLER |
de93cb2e | 710 | static void vlan_dev_poll_controller(struct net_device *dev) |
6d4cdf47 BL |
711 | { |
712 | return; | |
713 | } | |
714 | ||
47be03a2 AW |
715 | static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo, |
716 | gfp_t gfp) | |
6d4cdf47 | 717 | { |
f3da3893 AW |
718 | struct vlan_dev_priv *vlan = vlan_dev_priv(dev); |
719 | struct net_device *real_dev = vlan->real_dev; | |
6d4cdf47 BL |
720 | struct netpoll *netpoll; |
721 | int err = 0; | |
722 | ||
47be03a2 | 723 | netpoll = kzalloc(sizeof(*netpoll), gfp); |
6d4cdf47 BL |
724 | err = -ENOMEM; |
725 | if (!netpoll) | |
726 | goto out; | |
727 | ||
47be03a2 | 728 | err = __netpoll_setup(netpoll, real_dev, gfp); |
6d4cdf47 BL |
729 | if (err) { |
730 | kfree(netpoll); | |
731 | goto out; | |
732 | } | |
733 | ||
f3da3893 | 734 | vlan->netpoll = netpoll; |
6d4cdf47 BL |
735 | |
736 | out: | |
737 | return err; | |
738 | } | |
739 | ||
de93cb2e | 740 | static void vlan_dev_netpoll_cleanup(struct net_device *dev) |
6d4cdf47 | 741 | { |
f3da3893 AW |
742 | struct vlan_dev_priv *vlan= vlan_dev_priv(dev); |
743 | struct netpoll *netpoll = vlan->netpoll; | |
6d4cdf47 BL |
744 | |
745 | if (!netpoll) | |
746 | return; | |
747 | ||
f3da3893 | 748 | vlan->netpoll = NULL; |
6d4cdf47 | 749 | |
2cde6acd | 750 | __netpoll_free_async(netpoll); |
6d4cdf47 BL |
751 | } |
752 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
753 | ||
75b8846a | 754 | static const struct ethtool_ops vlan_ethtool_ops = { |
b3020061 SH |
755 | .get_settings = vlan_ethtool_get_settings, |
756 | .get_drvinfo = vlan_ethtool_get_drvinfo, | |
75b8846a | 757 | .get_link = ethtool_op_get_link, |
75b8846a PM |
758 | }; |
759 | ||
656299f7 SH |
760 | static const struct net_device_ops vlan_netdev_ops = { |
761 | .ndo_change_mtu = vlan_dev_change_mtu, | |
762 | .ndo_init = vlan_dev_init, | |
763 | .ndo_uninit = vlan_dev_uninit, | |
764 | .ndo_open = vlan_dev_open, | |
765 | .ndo_stop = vlan_dev_stop, | |
669d3e0b VD |
766 | .ndo_start_xmit = vlan_dev_hard_start_xmit, |
767 | .ndo_validate_addr = eth_validate_addr, | |
768 | .ndo_set_mac_address = vlan_dev_set_mac_address, | |
769 | .ndo_set_rx_mode = vlan_dev_set_rx_mode, | |
669d3e0b VD |
770 | .ndo_change_rx_flags = vlan_dev_change_rx_flags, |
771 | .ndo_do_ioctl = vlan_dev_ioctl, | |
772 | .ndo_neigh_setup = vlan_dev_neigh_setup, | |
9618e2ff | 773 | .ndo_get_stats64 = vlan_dev_get_stats64, |
f4d5392e | 774 | #if IS_ENABLED(CONFIG_FCOE) |
669d3e0b VD |
775 | .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, |
776 | .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, | |
777 | .ndo_fcoe_enable = vlan_dev_fcoe_enable, | |
778 | .ndo_fcoe_disable = vlan_dev_fcoe_disable, | |
779 | .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, | |
4ea09c9c | 780 | .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, |
6d4cdf47 BL |
781 | #endif |
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, |
669d3e0b VD |
788 | }; |
789 | ||
ef3eb3e5 PM |
790 | void vlan_setup(struct net_device *dev) |
791 | { | |
792 | ether_setup(dev); | |
793 | ||
794 | dev->priv_flags |= IFF_802_1Q_VLAN; | |
550fd08c | 795 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); |
ef3eb3e5 PM |
796 | dev->tx_queue_len = 0; |
797 | ||
656299f7 | 798 | dev->netdev_ops = &vlan_netdev_ops; |
ef3eb3e5 | 799 | dev->destructor = free_netdev; |
75b8846a | 800 | dev->ethtool_ops = &vlan_ethtool_ops; |
ef3eb3e5 PM |
801 | |
802 | memset(dev->broadcast, 0, ETH_ALEN); | |
803 | } |