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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> | |
1da177e4 LT |
36 | |
37 | /* | |
38 | * Rebuild the Ethernet MAC header. This is called after an ARP | |
39 | * (or in future other address resolution) has completed on this | |
40 | * sk_buff. We now let ARP fill in the other fields. | |
41 | * | |
42 | * This routine CANNOT use cached dst->neigh! | |
43 | * Really, it is used only when dst->neigh is wrong. | |
44 | * | |
45 | * TODO: This needs a checkup, I'm ignorant here. --BLG | |
46 | */ | |
ef3eb3e5 | 47 | static int vlan_dev_rebuild_header(struct sk_buff *skb) |
1da177e4 LT |
48 | { |
49 | struct net_device *dev = skb->dev; | |
50 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); | |
51 | ||
52 | switch (veth->h_vlan_encapsulated_proto) { | |
53 | #ifdef CONFIG_INET | |
60678040 | 54 | case htons(ETH_P_IP): |
1da177e4 LT |
55 | |
56 | /* TODO: Confirm this will work with VLAN headers... */ | |
57 | return arp_find(veth->h_dest, skb); | |
122952fc | 58 | #endif |
1da177e4 | 59 | default: |
afab2d29 | 60 | pr_debug("%s: unable to resolve type %X addresses\n", |
40f98e1a | 61 | dev->name, ntohs(veth->h_vlan_encapsulated_proto)); |
122952fc | 62 | |
1da177e4 LT |
63 | memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); |
64 | break; | |
3ff50b79 | 65 | } |
1da177e4 LT |
66 | |
67 | return 0; | |
68 | } | |
69 | ||
9bb8582e | 70 | static inline u16 |
2029cc2c | 71 | vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) |
1da177e4 | 72 | { |
2029cc2c | 73 | struct vlan_priority_tci_mapping *mp; |
1da177e4 | 74 | |
2029cc2c | 75 | mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; |
1da177e4 LT |
76 | while (mp) { |
77 | if (mp->priority == skb->priority) { | |
2029cc2c PM |
78 | return mp->vlan_qos; /* This should already be shifted |
79 | * to mask correctly with the | |
80 | * VLAN's TCI */ | |
1da177e4 LT |
81 | } |
82 | mp = mp->next; | |
83 | } | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /* | |
122952fc | 88 | * Create the VLAN header for an arbitrary protocol layer |
1da177e4 LT |
89 | * |
90 | * saddr=NULL means use device source address | |
91 | * daddr=NULL means leave destination address (eg unresolved arp) | |
92 | * | |
93 | * This is called when the SKB is moving down the stack towards the | |
94 | * physical devices. | |
95 | */ | |
ef3eb3e5 PM |
96 | static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
97 | unsigned short type, | |
98 | const void *daddr, const void *saddr, | |
99 | unsigned int len) | |
1da177e4 LT |
100 | { |
101 | struct vlan_hdr *vhdr; | |
1349fe9a | 102 | unsigned int vhdrlen = 0; |
9bb8582e | 103 | u16 vlan_tci = 0; |
1349fe9a | 104 | int rc; |
1da177e4 | 105 | |
1349fe9a | 106 | if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { |
1da177e4 LT |
107 | vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); |
108 | ||
9bb8582e PM |
109 | vlan_tci = vlan_dev_info(dev)->vlan_id; |
110 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); | |
9bb8582e | 111 | vhdr->h_vlan_TCI = htons(vlan_tci); |
1da177e4 LT |
112 | |
113 | /* | |
bf9ae538 OP |
114 | * Set the protocol type. For a packet of type ETH_P_802_3/2 we |
115 | * put the length in here instead. | |
1da177e4 | 116 | */ |
bf9ae538 | 117 | if (type != ETH_P_802_3 && type != ETH_P_802_2) |
1da177e4 | 118 | vhdr->h_vlan_encapsulated_proto = htons(type); |
2029cc2c | 119 | else |
1da177e4 | 120 | vhdr->h_vlan_encapsulated_proto = htons(len); |
279e172a JB |
121 | |
122 | skb->protocol = htons(ETH_P_8021Q); | |
1349fe9a PM |
123 | type = ETH_P_8021Q; |
124 | vhdrlen = VLAN_HLEN; | |
1da177e4 LT |
125 | } |
126 | ||
127 | /* Before delegating work to the lower layer, enter our MAC-address */ | |
128 | if (saddr == NULL) | |
129 | saddr = dev->dev_addr; | |
130 | ||
1349fe9a | 131 | /* Now make the underlying real hard header */ |
9dfebcc6 | 132 | dev = vlan_dev_info(dev)->real_dev; |
1349fe9a PM |
133 | rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); |
134 | if (rc > 0) | |
135 | rc += vhdrlen; | |
1da177e4 LT |
136 | return rc; |
137 | } | |
138 | ||
6fef4c0c SH |
139 | static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, |
140 | struct net_device *dev) | |
1da177e4 | 141 | { |
1da177e4 | 142 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
1a123a31 ED |
143 | unsigned int len; |
144 | int ret; | |
55b01e86 | 145 | |
1da177e4 LT |
146 | /* Handle non-VLAN frames if they are sent to us, for example by DHCP. |
147 | * | |
148 | * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING | |
149 | * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... | |
150 | */ | |
6ab3b487 | 151 | if (veth->h_vlan_proto != htons(ETH_P_8021Q) || |
d80aa31b | 152 | vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { |
9bb8582e | 153 | u16 vlan_tci; |
9bb8582e PM |
154 | vlan_tci = vlan_dev_info(dev)->vlan_id; |
155 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); | |
636e19a3 | 156 | skb = __vlan_hwaccel_put_tag(skb, vlan_tci); |
1da177e4 LT |
157 | } |
158 | ||
8a83a00b | 159 | skb_set_dev(skb, vlan_dev_info(dev)->real_dev); |
1a123a31 ED |
160 | len = skb->len; |
161 | ret = dev_queue_xmit(skb); | |
162 | ||
2d6c9ffc | 163 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
4af429d2 ED |
164 | struct vlan_pcpu_stats *stats; |
165 | ||
166 | stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats); | |
167 | u64_stats_update_begin(&stats->syncp); | |
168 | stats->tx_packets++; | |
169 | stats->tx_bytes += len; | |
307f73df | 170 | u64_stats_update_end(&stats->syncp); |
4af429d2 ED |
171 | } else { |
172 | this_cpu_inc(vlan_dev_info(dev)->vlan_pcpu_stats->tx_dropped); | |
173 | } | |
1a123a31 | 174 | |
cbbef5e1 | 175 | return ret; |
1da177e4 LT |
176 | } |
177 | ||
ef3eb3e5 | 178 | static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 LT |
179 | { |
180 | /* TODO: gotta make sure the underlying layer can handle it, | |
181 | * maybe an IFF_VLAN_CAPABLE flag for devices? | |
182 | */ | |
9dfebcc6 | 183 | if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) |
1da177e4 LT |
184 | return -ERANGE; |
185 | ||
186 | dev->mtu = new_mtu; | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
c17d8874 | 191 | void vlan_dev_set_ingress_priority(const struct net_device *dev, |
9bb8582e | 192 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 193 | { |
9dfebcc6 | 194 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
b020cb48 PM |
195 | |
196 | if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) | |
197 | vlan->nr_ingress_mappings--; | |
198 | else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) | |
199 | vlan->nr_ingress_mappings++; | |
200 | ||
201 | vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; | |
1da177e4 LT |
202 | } |
203 | ||
c17d8874 | 204 | int vlan_dev_set_egress_priority(const struct net_device *dev, |
9bb8582e | 205 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 206 | { |
9dfebcc6 | 207 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
1da177e4 LT |
208 | struct vlan_priority_tci_mapping *mp = NULL; |
209 | struct vlan_priority_tci_mapping *np; | |
05423b24 | 210 | u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; |
122952fc | 211 | |
c17d8874 | 212 | /* See if a priority mapping exists.. */ |
b020cb48 | 213 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
214 | while (mp) { |
215 | if (mp->priority == skb_prio) { | |
b020cb48 PM |
216 | if (mp->vlan_qos && !vlan_qos) |
217 | vlan->nr_egress_mappings--; | |
218 | else if (!mp->vlan_qos && vlan_qos) | |
219 | vlan->nr_egress_mappings++; | |
220 | mp->vlan_qos = vlan_qos; | |
c17d8874 | 221 | return 0; |
1da177e4 | 222 | } |
c17d8874 | 223 | mp = mp->next; |
1da177e4 | 224 | } |
c17d8874 PM |
225 | |
226 | /* Create a new mapping then. */ | |
b020cb48 | 227 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
228 | np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); |
229 | if (!np) | |
230 | return -ENOBUFS; | |
231 | ||
232 | np->next = mp; | |
233 | np->priority = skb_prio; | |
b020cb48 PM |
234 | np->vlan_qos = vlan_qos; |
235 | vlan->egress_priority_map[skb_prio & 0xF] = np; | |
236 | if (vlan_qos) | |
237 | vlan->nr_egress_mappings++; | |
c17d8874 | 238 | return 0; |
1da177e4 LT |
239 | } |
240 | ||
a4bf3af4 | 241 | /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ |
b3ce0325 | 242 | int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) |
1da177e4 | 243 | { |
b3ce0325 PM |
244 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
245 | u32 old_flags = vlan->flags; | |
246 | ||
5e756593 PM |
247 | if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | |
248 | VLAN_FLAG_LOOSE_BINDING)) | |
b3ce0325 PM |
249 | return -EINVAL; |
250 | ||
251 | vlan->flags = (old_flags & ~mask) | (flags & mask); | |
70c03b49 PM |
252 | |
253 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { | |
254 | if (vlan->flags & VLAN_FLAG_GVRP) | |
255 | vlan_gvrp_request_join(dev); | |
256 | else | |
257 | vlan_gvrp_request_leave(dev); | |
258 | } | |
b3ce0325 | 259 | return 0; |
1da177e4 LT |
260 | } |
261 | ||
c17d8874 | 262 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) |
1da177e4 | 263 | { |
9dfebcc6 | 264 | strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); |
1da177e4 LT |
265 | } |
266 | ||
ef3eb3e5 | 267 | static int vlan_dev_open(struct net_device *dev) |
1da177e4 | 268 | { |
9dfebcc6 | 269 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
8c979c26 PM |
270 | struct net_device *real_dev = vlan->real_dev; |
271 | int err; | |
272 | ||
5e756593 PM |
273 | if (!(real_dev->flags & IFF_UP) && |
274 | !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) | |
1da177e4 LT |
275 | return -ENETDOWN; |
276 | ||
8c979c26 | 277 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { |
a748ee24 | 278 | err = dev_uc_add(real_dev, dev->dev_addr); |
8c979c26 | 279 | if (err < 0) |
89146504 | 280 | goto out; |
8c979c26 | 281 | } |
8c979c26 | 282 | |
89146504 WC |
283 | if (dev->flags & IFF_ALLMULTI) { |
284 | err = dev_set_allmulti(real_dev, 1); | |
285 | if (err < 0) | |
286 | goto del_unicast; | |
287 | } | |
288 | if (dev->flags & IFF_PROMISC) { | |
289 | err = dev_set_promiscuity(real_dev, 1); | |
290 | if (err < 0) | |
291 | goto clear_allmulti; | |
292 | } | |
293 | ||
294 | memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); | |
6c78dcbd | 295 | |
70c03b49 PM |
296 | if (vlan->flags & VLAN_FLAG_GVRP) |
297 | vlan_gvrp_request_join(dev); | |
298 | ||
0ac820ee PO |
299 | if (netif_carrier_ok(real_dev)) |
300 | netif_carrier_on(dev); | |
1da177e4 | 301 | return 0; |
89146504 WC |
302 | |
303 | clear_allmulti: | |
304 | if (dev->flags & IFF_ALLMULTI) | |
305 | dev_set_allmulti(real_dev, -1); | |
306 | del_unicast: | |
307 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) | |
a748ee24 | 308 | dev_uc_del(real_dev, dev->dev_addr); |
89146504 | 309 | out: |
adc667e8 | 310 | netif_carrier_off(dev); |
89146504 | 311 | return err; |
1da177e4 LT |
312 | } |
313 | ||
ef3eb3e5 | 314 | static int vlan_dev_stop(struct net_device *dev) |
1da177e4 | 315 | { |
70c03b49 PM |
316 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
317 | struct net_device *real_dev = vlan->real_dev; | |
318 | ||
56addd6e | 319 | dev_mc_unsync(real_dev, dev); |
a748ee24 | 320 | dev_uc_unsync(real_dev, dev); |
6c78dcbd PM |
321 | if (dev->flags & IFF_ALLMULTI) |
322 | dev_set_allmulti(real_dev, -1); | |
323 | if (dev->flags & IFF_PROMISC) | |
324 | dev_set_promiscuity(real_dev, -1); | |
325 | ||
8c979c26 | 326 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 327 | dev_uc_del(real_dev, dev->dev_addr); |
8c979c26 | 328 | |
adc667e8 | 329 | netif_carrier_off(dev); |
1da177e4 LT |
330 | return 0; |
331 | } | |
332 | ||
ef3eb3e5 | 333 | static int vlan_dev_set_mac_address(struct net_device *dev, void *p) |
39aaac11 | 334 | { |
9dfebcc6 | 335 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
39aaac11 PM |
336 | struct sockaddr *addr = p; |
337 | int err; | |
338 | ||
339 | if (!is_valid_ether_addr(addr->sa_data)) | |
340 | return -EADDRNOTAVAIL; | |
341 | ||
342 | if (!(dev->flags & IFF_UP)) | |
343 | goto out; | |
344 | ||
345 | if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { | |
a748ee24 | 346 | err = dev_uc_add(real_dev, addr->sa_data); |
39aaac11 PM |
347 | if (err < 0) |
348 | return err; | |
349 | } | |
350 | ||
351 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) | |
a748ee24 | 352 | dev_uc_del(real_dev, dev->dev_addr); |
39aaac11 PM |
353 | |
354 | out: | |
355 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
356 | return 0; | |
357 | } | |
358 | ||
ef3eb3e5 | 359 | static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1da177e4 | 360 | { |
9dfebcc6 | 361 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
656299f7 | 362 | const struct net_device_ops *ops = real_dev->netdev_ops; |
1da177e4 LT |
363 | struct ifreq ifrr; |
364 | int err = -EOPNOTSUPP; | |
365 | ||
366 | strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); | |
367 | ifrr.ifr_ifru = ifr->ifr_ifru; | |
368 | ||
2029cc2c | 369 | switch (cmd) { |
1da177e4 LT |
370 | case SIOCGMIIPHY: |
371 | case SIOCGMIIREG: | |
372 | case SIOCSMIIREG: | |
656299f7 SH |
373 | if (netif_device_present(real_dev) && ops->ndo_do_ioctl) |
374 | err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); | |
1da177e4 | 375 | break; |
1da177e4 LT |
376 | } |
377 | ||
122952fc | 378 | if (!err) |
1da177e4 LT |
379 | ifr->ifr_ifru = ifrr.ifr_ifru; |
380 | ||
381 | return err; | |
382 | } | |
383 | ||
cc883d16 FB |
384 | static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) |
385 | { | |
386 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
387 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
388 | int err = 0; | |
389 | ||
390 | if (netif_device_present(real_dev) && ops->ndo_neigh_setup) | |
9d40bbda | 391 | err = ops->ndo_neigh_setup(real_dev, pa); |
cc883d16 FB |
392 | |
393 | return err; | |
394 | } | |
395 | ||
b85daa53 VD |
396 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
397 | static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, | |
398 | struct scatterlist *sgl, unsigned int sgc) | |
399 | { | |
400 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
401 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
402 | int rc = 0; | |
403 | ||
404 | if (ops->ndo_fcoe_ddp_setup) | |
405 | rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); | |
406 | ||
407 | return rc; | |
408 | } | |
409 | ||
410 | static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) | |
411 | { | |
412 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
413 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
414 | int len = 0; | |
415 | ||
416 | if (ops->ndo_fcoe_ddp_done) | |
417 | len = ops->ndo_fcoe_ddp_done(real_dev, xid); | |
418 | ||
419 | return len; | |
420 | } | |
0af46d99 YZ |
421 | |
422 | static int vlan_dev_fcoe_enable(struct net_device *dev) | |
423 | { | |
424 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
425 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
426 | int rc = -EINVAL; | |
427 | ||
428 | if (ops->ndo_fcoe_enable) | |
429 | rc = ops->ndo_fcoe_enable(real_dev); | |
430 | return rc; | |
431 | } | |
432 | ||
433 | static int vlan_dev_fcoe_disable(struct net_device *dev) | |
434 | { | |
435 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
436 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
437 | int rc = -EINVAL; | |
438 | ||
439 | if (ops->ndo_fcoe_disable) | |
440 | rc = ops->ndo_fcoe_disable(real_dev); | |
441 | return rc; | |
442 | } | |
d6534799 YZ |
443 | |
444 | static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) | |
445 | { | |
446 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
447 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
448 | int rc = -EINVAL; | |
449 | ||
450 | if (ops->ndo_fcoe_get_wwn) | |
451 | rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); | |
452 | return rc; | |
453 | } | |
4ea09c9c YZ |
454 | |
455 | static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, | |
456 | struct scatterlist *sgl, unsigned int sgc) | |
457 | { | |
458 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
459 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
460 | int rc = 0; | |
461 | ||
462 | if (ops->ndo_fcoe_ddp_target) | |
463 | rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); | |
464 | ||
465 | return rc; | |
466 | } | |
b85daa53 VD |
467 | #endif |
468 | ||
ef3eb3e5 | 469 | static void vlan_dev_change_rx_flags(struct net_device *dev, int change) |
6c78dcbd | 470 | { |
9dfebcc6 | 471 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
6c78dcbd PM |
472 | |
473 | if (change & IFF_ALLMULTI) | |
474 | dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
475 | if (change & IFF_PROMISC) | |
476 | dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); | |
477 | } | |
478 | ||
e83a2ea8 | 479 | static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) |
1da177e4 | 480 | { |
9dfebcc6 | 481 | dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
a748ee24 | 482 | dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
1da177e4 | 483 | } |
ef3eb3e5 PM |
484 | |
485 | /* | |
486 | * vlan network devices have devices nesting below it, and are a special | |
487 | * "super class" of normal network devices; split their locks off into a | |
488 | * separate class since they always nest. | |
489 | */ | |
490 | static struct lock_class_key vlan_netdev_xmit_lock_key; | |
cf508b12 | 491 | static struct lock_class_key vlan_netdev_addr_lock_key; |
ef3eb3e5 | 492 | |
e8a0464c DM |
493 | static void vlan_dev_set_lockdep_one(struct net_device *dev, |
494 | struct netdev_queue *txq, | |
495 | void *_subclass) | |
c773e847 DM |
496 | { |
497 | lockdep_set_class_and_subclass(&txq->_xmit_lock, | |
e8a0464c DM |
498 | &vlan_netdev_xmit_lock_key, |
499 | *(int *)_subclass); | |
c773e847 DM |
500 | } |
501 | ||
502 | static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) | |
503 | { | |
cf508b12 DM |
504 | lockdep_set_class_and_subclass(&dev->addr_list_lock, |
505 | &vlan_netdev_addr_lock_key, | |
506 | subclass); | |
e8a0464c | 507 | netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); |
c773e847 DM |
508 | } |
509 | ||
ef3eb3e5 PM |
510 | static const struct header_ops vlan_header_ops = { |
511 | .create = vlan_dev_hard_header, | |
512 | .rebuild = vlan_dev_rebuild_header, | |
513 | .parse = eth_header_parse, | |
514 | }; | |
515 | ||
213b15ca | 516 | static const struct net_device_ops vlan_netdev_ops; |
f7d1b9f5 | 517 | |
ef3eb3e5 PM |
518 | static int vlan_dev_init(struct net_device *dev) |
519 | { | |
9dfebcc6 | 520 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
ef3eb3e5 PM |
521 | int subclass = 0; |
522 | ||
adc667e8 JV |
523 | netif_carrier_off(dev); |
524 | ||
ef3eb3e5 | 525 | /* IFF_BROADCAST|IFF_MULTICAST; ??? */ |
194dbcc8 JF |
526 | dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | |
527 | IFF_MASTER | IFF_SLAVE); | |
ef3eb3e5 PM |
528 | dev->iflink = real_dev->ifindex; |
529 | dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | | |
530 | (1<<__LINK_STATE_DORMANT))) | | |
531 | (1<<__LINK_STATE_PRESENT); | |
532 | ||
62f2a3a4 MM |
533 | dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG | |
534 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | | |
535 | NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM | | |
536 | NETIF_F_ALL_FCOE; | |
537 | ||
8a0427bb | 538 | dev->features |= real_dev->vlan_features | NETIF_F_LLTX; |
1ae4be22 | 539 | dev->gso_max_size = real_dev->gso_max_size; |
5fb13570 | 540 | |
ef3eb3e5 PM |
541 | /* ipv6 shared card related stuff */ |
542 | dev->dev_id = real_dev->dev_id; | |
543 | ||
544 | if (is_zero_ether_addr(dev->dev_addr)) | |
545 | memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); | |
546 | if (is_zero_ether_addr(dev->broadcast)) | |
547 | memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); | |
548 | ||
b85daa53 VD |
549 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
550 | dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; | |
551 | #endif | |
552 | ||
d870bfb9 | 553 | dev->needed_headroom = real_dev->needed_headroom; |
ef3eb3e5 PM |
554 | if (real_dev->features & NETIF_F_HW_VLAN_TX) { |
555 | dev->header_ops = real_dev->header_ops; | |
556 | dev->hard_header_len = real_dev->hard_header_len; | |
ef3eb3e5 PM |
557 | } else { |
558 | dev->header_ops = &vlan_header_ops; | |
559 | dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; | |
ef3eb3e5 PM |
560 | } |
561 | ||
213b15ca | 562 | dev->netdev_ops = &vlan_netdev_ops; |
636e19a3 | 563 | |
26a25239 | 564 | if (is_vlan_dev(real_dev)) |
ef3eb3e5 PM |
565 | subclass = 1; |
566 | ||
c773e847 | 567 | vlan_dev_set_lockdep_class(dev, subclass); |
9793241f | 568 | |
4af429d2 ED |
569 | vlan_dev_info(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats); |
570 | if (!vlan_dev_info(dev)->vlan_pcpu_stats) | |
9793241f ED |
571 | return -ENOMEM; |
572 | ||
ef3eb3e5 PM |
573 | return 0; |
574 | } | |
575 | ||
23556323 PE |
576 | static void vlan_dev_uninit(struct net_device *dev) |
577 | { | |
578 | struct vlan_priority_tci_mapping *pm; | |
579 | struct vlan_dev_info *vlan = vlan_dev_info(dev); | |
580 | int i; | |
581 | ||
4af429d2 ED |
582 | free_percpu(vlan->vlan_pcpu_stats); |
583 | vlan->vlan_pcpu_stats = NULL; | |
23556323 PE |
584 | for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { |
585 | while ((pm = vlan->egress_priority_map[i]) != NULL) { | |
586 | vlan->egress_priority_map[i] = pm->next; | |
587 | kfree(pm); | |
588 | } | |
589 | } | |
590 | } | |
591 | ||
8a0427bb MM |
592 | static u32 vlan_dev_fix_features(struct net_device *dev, u32 features) |
593 | { | |
594 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
712ae51a | 595 | u32 old_features = features; |
8a0427bb | 596 | |
f0a619cc MM |
597 | features &= real_dev->features; |
598 | features &= real_dev->vlan_features; | |
712ae51a | 599 | |
6c9c1b54 | 600 | features |= old_features & NETIF_F_SOFT_FEATURES; |
712ae51a | 601 | |
8a0427bb MM |
602 | if (dev_ethtool_get_rx_csum(real_dev)) |
603 | features |= NETIF_F_RXCSUM; | |
f0a619cc | 604 | features |= NETIF_F_LLTX; |
8a0427bb MM |
605 | |
606 | return features; | |
607 | } | |
608 | ||
b3020061 SH |
609 | static int vlan_ethtool_get_settings(struct net_device *dev, |
610 | struct ethtool_cmd *cmd) | |
611 | { | |
612 | const struct vlan_dev_info *vlan = vlan_dev_info(dev); | |
b1b67dd4 | 613 | return dev_ethtool_get_settings(vlan->real_dev, cmd); |
b3020061 SH |
614 | } |
615 | ||
616 | static void vlan_ethtool_get_drvinfo(struct net_device *dev, | |
617 | struct ethtool_drvinfo *info) | |
618 | { | |
619 | strcpy(info->driver, vlan_fullname); | |
620 | strcpy(info->version, vlan_version); | |
621 | strcpy(info->fw_version, "N/A"); | |
622 | } | |
623 | ||
28172739 | 624 | static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
9793241f | 625 | { |
9793241f | 626 | |
4af429d2 ED |
627 | if (vlan_dev_info(dev)->vlan_pcpu_stats) { |
628 | struct vlan_pcpu_stats *p; | |
629 | u32 rx_errors = 0, tx_dropped = 0; | |
9793241f ED |
630 | int i; |
631 | ||
632 | for_each_possible_cpu(i) { | |
4af429d2 | 633 | u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; |
9618e2ff ED |
634 | unsigned int start; |
635 | ||
4af429d2 | 636 | p = per_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats, i); |
9618e2ff ED |
637 | do { |
638 | start = u64_stats_fetch_begin_bh(&p->syncp); | |
639 | rxpackets = p->rx_packets; | |
640 | rxbytes = p->rx_bytes; | |
641 | rxmulticast = p->rx_multicast; | |
4af429d2 ED |
642 | txpackets = p->tx_packets; |
643 | txbytes = p->tx_bytes; | |
9618e2ff | 644 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); |
4af429d2 ED |
645 | |
646 | stats->rx_packets += rxpackets; | |
647 | stats->rx_bytes += rxbytes; | |
648 | stats->multicast += rxmulticast; | |
649 | stats->tx_packets += txpackets; | |
650 | stats->tx_bytes += txbytes; | |
651 | /* rx_errors & tx_dropped are u32 */ | |
652 | rx_errors += p->rx_errors; | |
653 | tx_dropped += p->tx_dropped; | |
9793241f | 654 | } |
4af429d2 ED |
655 | stats->rx_errors = rx_errors; |
656 | stats->tx_dropped = tx_dropped; | |
9793241f ED |
657 | } |
658 | return stats; | |
659 | } | |
660 | ||
75b8846a | 661 | static const struct ethtool_ops vlan_ethtool_ops = { |
b3020061 SH |
662 | .get_settings = vlan_ethtool_get_settings, |
663 | .get_drvinfo = vlan_ethtool_get_drvinfo, | |
75b8846a | 664 | .get_link = ethtool_op_get_link, |
75b8846a PM |
665 | }; |
666 | ||
656299f7 SH |
667 | static const struct net_device_ops vlan_netdev_ops = { |
668 | .ndo_change_mtu = vlan_dev_change_mtu, | |
669 | .ndo_init = vlan_dev_init, | |
670 | .ndo_uninit = vlan_dev_uninit, | |
671 | .ndo_open = vlan_dev_open, | |
672 | .ndo_stop = vlan_dev_stop, | |
669d3e0b VD |
673 | .ndo_start_xmit = vlan_dev_hard_start_xmit, |
674 | .ndo_validate_addr = eth_validate_addr, | |
675 | .ndo_set_mac_address = vlan_dev_set_mac_address, | |
676 | .ndo_set_rx_mode = vlan_dev_set_rx_mode, | |
677 | .ndo_set_multicast_list = vlan_dev_set_rx_mode, | |
678 | .ndo_change_rx_flags = vlan_dev_change_rx_flags, | |
679 | .ndo_do_ioctl = vlan_dev_ioctl, | |
680 | .ndo_neigh_setup = vlan_dev_neigh_setup, | |
9618e2ff | 681 | .ndo_get_stats64 = vlan_dev_get_stats64, |
669d3e0b VD |
682 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
683 | .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, | |
684 | .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, | |
685 | .ndo_fcoe_enable = vlan_dev_fcoe_enable, | |
686 | .ndo_fcoe_disable = vlan_dev_fcoe_disable, | |
687 | .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, | |
4ea09c9c | 688 | .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, |
669d3e0b | 689 | #endif |
8a0427bb | 690 | .ndo_fix_features = vlan_dev_fix_features, |
669d3e0b VD |
691 | }; |
692 | ||
ef3eb3e5 PM |
693 | void vlan_setup(struct net_device *dev) |
694 | { | |
695 | ether_setup(dev); | |
696 | ||
697 | dev->priv_flags |= IFF_802_1Q_VLAN; | |
93f154b5 | 698 | dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
ef3eb3e5 PM |
699 | dev->tx_queue_len = 0; |
700 | ||
656299f7 | 701 | dev->netdev_ops = &vlan_netdev_ops; |
ef3eb3e5 | 702 | dev->destructor = free_netdev; |
75b8846a | 703 | dev->ethtool_ops = &vlan_ethtool_ops; |
ef3eb3e5 PM |
704 | |
705 | memset(dev->broadcast, 0, ETH_ALEN); | |
706 | } |