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 | ||
23 | #include <linux/module.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
1da177e4 LT |
25 | #include <linux/skbuff.h> |
26 | #include <linux/netdevice.h> | |
27 | #include <linux/etherdevice.h> | |
75b8846a | 28 | #include <linux/ethtool.h> |
1da177e4 LT |
29 | #include <net/arp.h> |
30 | ||
31 | #include "vlan.h" | |
32 | #include "vlanproc.h" | |
33 | #include <linux/if_vlan.h> | |
1da177e4 LT |
34 | |
35 | /* | |
36 | * Rebuild the Ethernet MAC header. This is called after an ARP | |
37 | * (or in future other address resolution) has completed on this | |
38 | * sk_buff. We now let ARP fill in the other fields. | |
39 | * | |
40 | * This routine CANNOT use cached dst->neigh! | |
41 | * Really, it is used only when dst->neigh is wrong. | |
42 | * | |
43 | * TODO: This needs a checkup, I'm ignorant here. --BLG | |
44 | */ | |
ef3eb3e5 | 45 | static int vlan_dev_rebuild_header(struct sk_buff *skb) |
1da177e4 LT |
46 | { |
47 | struct net_device *dev = skb->dev; | |
48 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); | |
49 | ||
50 | switch (veth->h_vlan_encapsulated_proto) { | |
51 | #ifdef CONFIG_INET | |
60678040 | 52 | case htons(ETH_P_IP): |
1da177e4 LT |
53 | |
54 | /* TODO: Confirm this will work with VLAN headers... */ | |
55 | return arp_find(veth->h_dest, skb); | |
122952fc | 56 | #endif |
1da177e4 | 57 | default: |
40f98e1a PM |
58 | pr_debug("%s: unable to resolve type %X addresses.\n", |
59 | dev->name, ntohs(veth->h_vlan_encapsulated_proto)); | |
122952fc | 60 | |
1da177e4 LT |
61 | memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); |
62 | break; | |
3ff50b79 | 63 | } |
1da177e4 LT |
64 | |
65 | return 0; | |
66 | } | |
67 | ||
9bb8582e | 68 | static inline u16 |
2029cc2c | 69 | vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) |
1da177e4 | 70 | { |
2029cc2c | 71 | struct vlan_priority_tci_mapping *mp; |
1da177e4 | 72 | |
2029cc2c | 73 | mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; |
1da177e4 LT |
74 | while (mp) { |
75 | if (mp->priority == skb->priority) { | |
2029cc2c PM |
76 | return mp->vlan_qos; /* This should already be shifted |
77 | * to mask correctly with the | |
78 | * VLAN's TCI */ | |
1da177e4 LT |
79 | } |
80 | mp = mp->next; | |
81 | } | |
82 | return 0; | |
83 | } | |
84 | ||
85 | /* | |
122952fc | 86 | * Create the VLAN header for an arbitrary protocol layer |
1da177e4 LT |
87 | * |
88 | * saddr=NULL means use device source address | |
89 | * daddr=NULL means leave destination address (eg unresolved arp) | |
90 | * | |
91 | * This is called when the SKB is moving down the stack towards the | |
92 | * physical devices. | |
93 | */ | |
ef3eb3e5 PM |
94 | static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
95 | unsigned short type, | |
96 | const void *daddr, const void *saddr, | |
97 | unsigned int len) | |
1da177e4 LT |
98 | { |
99 | struct vlan_hdr *vhdr; | |
1349fe9a | 100 | unsigned int vhdrlen = 0; |
9bb8582e | 101 | u16 vlan_tci = 0; |
1349fe9a | 102 | int rc; |
1da177e4 | 103 | |
1349fe9a | 104 | if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { |
1da177e4 LT |
105 | vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); |
106 | ||
9bb8582e PM |
107 | vlan_tci = vlan_dev_info(dev)->vlan_id; |
108 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); | |
9bb8582e | 109 | vhdr->h_vlan_TCI = htons(vlan_tci); |
1da177e4 LT |
110 | |
111 | /* | |
bf9ae538 OP |
112 | * Set the protocol type. For a packet of type ETH_P_802_3/2 we |
113 | * put the length in here instead. | |
1da177e4 | 114 | */ |
bf9ae538 | 115 | if (type != ETH_P_802_3 && type != ETH_P_802_2) |
1da177e4 | 116 | vhdr->h_vlan_encapsulated_proto = htons(type); |
2029cc2c | 117 | else |
1da177e4 | 118 | vhdr->h_vlan_encapsulated_proto = htons(len); |
279e172a JB |
119 | |
120 | skb->protocol = htons(ETH_P_8021Q); | |
1349fe9a PM |
121 | type = ETH_P_8021Q; |
122 | vhdrlen = VLAN_HLEN; | |
1da177e4 LT |
123 | } |
124 | ||
125 | /* Before delegating work to the lower layer, enter our MAC-address */ | |
126 | if (saddr == NULL) | |
127 | saddr = dev->dev_addr; | |
128 | ||
1349fe9a | 129 | /* Now make the underlying real hard header */ |
9dfebcc6 | 130 | dev = vlan_dev_info(dev)->real_dev; |
1349fe9a PM |
131 | rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); |
132 | if (rc > 0) | |
133 | rc += vhdrlen; | |
1da177e4 LT |
134 | return rc; |
135 | } | |
136 | ||
6fef4c0c SH |
137 | static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, |
138 | struct net_device *dev) | |
1da177e4 | 139 | { |
1da177e4 | 140 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
1a123a31 ED |
141 | unsigned int len; |
142 | int ret; | |
55b01e86 | 143 | |
1da177e4 LT |
144 | /* Handle non-VLAN frames if they are sent to us, for example by DHCP. |
145 | * | |
146 | * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING | |
147 | * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... | |
148 | */ | |
6ab3b487 | 149 | if (veth->h_vlan_proto != htons(ETH_P_8021Q) || |
d80aa31b | 150 | vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { |
9bb8582e | 151 | u16 vlan_tci; |
9bb8582e PM |
152 | vlan_tci = vlan_dev_info(dev)->vlan_id; |
153 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); | |
636e19a3 | 154 | skb = __vlan_hwaccel_put_tag(skb, vlan_tci); |
1da177e4 LT |
155 | } |
156 | ||
8a83a00b | 157 | skb_set_dev(skb, vlan_dev_info(dev)->real_dev); |
1a123a31 ED |
158 | len = skb->len; |
159 | ret = dev_queue_xmit(skb); | |
160 | ||
2d6c9ffc | 161 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
4af429d2 ED |
162 | struct vlan_pcpu_stats *stats; |
163 | ||
164 | stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats); | |
165 | u64_stats_update_begin(&stats->syncp); | |
166 | stats->tx_packets++; | |
167 | stats->tx_bytes += len; | |
168 | u64_stats_update_begin(&stats->syncp); | |
169 | } else { | |
170 | this_cpu_inc(vlan_dev_info(dev)->vlan_pcpu_stats->tx_dropped); | |
171 | } | |
1a123a31 | 172 | |
cbbef5e1 | 173 | return ret; |
1da177e4 LT |
174 | } |
175 | ||
ef3eb3e5 | 176 | static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 LT |
177 | { |
178 | /* TODO: gotta make sure the underlying layer can handle it, | |
179 | * maybe an IFF_VLAN_CAPABLE flag for devices? | |
180 | */ | |
9dfebcc6 | 181 | if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) |
1da177e4 LT |
182 | return -ERANGE; |
183 | ||
184 | dev->mtu = new_mtu; | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
c17d8874 | 189 | void vlan_dev_set_ingress_priority(const struct net_device *dev, |
9bb8582e | 190 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 191 | { |
9dfebcc6 | 192 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
b020cb48 PM |
193 | |
194 | if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) | |
195 | vlan->nr_ingress_mappings--; | |
196 | else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) | |
197 | vlan->nr_ingress_mappings++; | |
198 | ||
199 | vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; | |
1da177e4 LT |
200 | } |
201 | ||
c17d8874 | 202 | int vlan_dev_set_egress_priority(const struct net_device *dev, |
9bb8582e | 203 | u32 skb_prio, u16 vlan_prio) |
1da177e4 | 204 | { |
9dfebcc6 | 205 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
1da177e4 LT |
206 | struct vlan_priority_tci_mapping *mp = NULL; |
207 | struct vlan_priority_tci_mapping *np; | |
05423b24 | 208 | u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; |
122952fc | 209 | |
c17d8874 | 210 | /* See if a priority mapping exists.. */ |
b020cb48 | 211 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
212 | while (mp) { |
213 | if (mp->priority == skb_prio) { | |
b020cb48 PM |
214 | if (mp->vlan_qos && !vlan_qos) |
215 | vlan->nr_egress_mappings--; | |
216 | else if (!mp->vlan_qos && vlan_qos) | |
217 | vlan->nr_egress_mappings++; | |
218 | mp->vlan_qos = vlan_qos; | |
c17d8874 | 219 | return 0; |
1da177e4 | 220 | } |
c17d8874 | 221 | mp = mp->next; |
1da177e4 | 222 | } |
c17d8874 PM |
223 | |
224 | /* Create a new mapping then. */ | |
b020cb48 | 225 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
c17d8874 PM |
226 | np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); |
227 | if (!np) | |
228 | return -ENOBUFS; | |
229 | ||
230 | np->next = mp; | |
231 | np->priority = skb_prio; | |
b020cb48 PM |
232 | np->vlan_qos = vlan_qos; |
233 | vlan->egress_priority_map[skb_prio & 0xF] = np; | |
234 | if (vlan_qos) | |
235 | vlan->nr_egress_mappings++; | |
c17d8874 | 236 | return 0; |
1da177e4 LT |
237 | } |
238 | ||
a4bf3af4 | 239 | /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ |
b3ce0325 | 240 | int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) |
1da177e4 | 241 | { |
b3ce0325 PM |
242 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
243 | u32 old_flags = vlan->flags; | |
244 | ||
5e756593 PM |
245 | if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | |
246 | VLAN_FLAG_LOOSE_BINDING)) | |
b3ce0325 PM |
247 | return -EINVAL; |
248 | ||
249 | vlan->flags = (old_flags & ~mask) | (flags & mask); | |
70c03b49 PM |
250 | |
251 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { | |
252 | if (vlan->flags & VLAN_FLAG_GVRP) | |
253 | vlan_gvrp_request_join(dev); | |
254 | else | |
255 | vlan_gvrp_request_leave(dev); | |
256 | } | |
b3ce0325 | 257 | return 0; |
1da177e4 LT |
258 | } |
259 | ||
c17d8874 | 260 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) |
1da177e4 | 261 | { |
9dfebcc6 | 262 | strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); |
1da177e4 LT |
263 | } |
264 | ||
ef3eb3e5 | 265 | static int vlan_dev_open(struct net_device *dev) |
1da177e4 | 266 | { |
9dfebcc6 | 267 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
8c979c26 PM |
268 | struct net_device *real_dev = vlan->real_dev; |
269 | int err; | |
270 | ||
5e756593 PM |
271 | if (!(real_dev->flags & IFF_UP) && |
272 | !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) | |
1da177e4 LT |
273 | return -ENETDOWN; |
274 | ||
8c979c26 | 275 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { |
a748ee24 | 276 | err = dev_uc_add(real_dev, dev->dev_addr); |
8c979c26 | 277 | if (err < 0) |
89146504 | 278 | goto out; |
8c979c26 | 279 | } |
8c979c26 | 280 | |
89146504 WC |
281 | if (dev->flags & IFF_ALLMULTI) { |
282 | err = dev_set_allmulti(real_dev, 1); | |
283 | if (err < 0) | |
284 | goto del_unicast; | |
285 | } | |
286 | if (dev->flags & IFF_PROMISC) { | |
287 | err = dev_set_promiscuity(real_dev, 1); | |
288 | if (err < 0) | |
289 | goto clear_allmulti; | |
290 | } | |
291 | ||
292 | memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); | |
6c78dcbd | 293 | |
70c03b49 PM |
294 | if (vlan->flags & VLAN_FLAG_GVRP) |
295 | vlan_gvrp_request_join(dev); | |
296 | ||
0ac820ee PO |
297 | if (netif_carrier_ok(real_dev)) |
298 | netif_carrier_on(dev); | |
1da177e4 | 299 | return 0; |
89146504 WC |
300 | |
301 | clear_allmulti: | |
302 | if (dev->flags & IFF_ALLMULTI) | |
303 | dev_set_allmulti(real_dev, -1); | |
304 | del_unicast: | |
305 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) | |
a748ee24 | 306 | dev_uc_del(real_dev, dev->dev_addr); |
89146504 | 307 | out: |
adc667e8 | 308 | netif_carrier_off(dev); |
89146504 | 309 | return err; |
1da177e4 LT |
310 | } |
311 | ||
ef3eb3e5 | 312 | static int vlan_dev_stop(struct net_device *dev) |
1da177e4 | 313 | { |
70c03b49 PM |
314 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
315 | struct net_device *real_dev = vlan->real_dev; | |
316 | ||
317 | if (vlan->flags & VLAN_FLAG_GVRP) | |
318 | vlan_gvrp_request_leave(dev); | |
8c979c26 | 319 | |
56addd6e | 320 | dev_mc_unsync(real_dev, dev); |
a748ee24 | 321 | dev_uc_unsync(real_dev, dev); |
6c78dcbd PM |
322 | if (dev->flags & IFF_ALLMULTI) |
323 | dev_set_allmulti(real_dev, -1); | |
324 | if (dev->flags & IFF_PROMISC) | |
325 | dev_set_promiscuity(real_dev, -1); | |
326 | ||
8c979c26 | 327 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
a748ee24 | 328 | dev_uc_del(real_dev, dev->dev_addr); |
8c979c26 | 329 | |
adc667e8 | 330 | netif_carrier_off(dev); |
1da177e4 LT |
331 | return 0; |
332 | } | |
333 | ||
ef3eb3e5 | 334 | static int vlan_dev_set_mac_address(struct net_device *dev, void *p) |
39aaac11 | 335 | { |
9dfebcc6 | 336 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
39aaac11 PM |
337 | struct sockaddr *addr = p; |
338 | int err; | |
339 | ||
340 | if (!is_valid_ether_addr(addr->sa_data)) | |
341 | return -EADDRNOTAVAIL; | |
342 | ||
343 | if (!(dev->flags & IFF_UP)) | |
344 | goto out; | |
345 | ||
346 | if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { | |
a748ee24 | 347 | err = dev_uc_add(real_dev, addr->sa_data); |
39aaac11 PM |
348 | if (err < 0) |
349 | return err; | |
350 | } | |
351 | ||
352 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) | |
a748ee24 | 353 | dev_uc_del(real_dev, dev->dev_addr); |
39aaac11 PM |
354 | |
355 | out: | |
356 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
357 | return 0; | |
358 | } | |
359 | ||
ef3eb3e5 | 360 | static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1da177e4 | 361 | { |
9dfebcc6 | 362 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
656299f7 | 363 | const struct net_device_ops *ops = real_dev->netdev_ops; |
1da177e4 LT |
364 | struct ifreq ifrr; |
365 | int err = -EOPNOTSUPP; | |
366 | ||
367 | strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); | |
368 | ifrr.ifr_ifru = ifr->ifr_ifru; | |
369 | ||
2029cc2c | 370 | switch (cmd) { |
1da177e4 LT |
371 | case SIOCGMIIPHY: |
372 | case SIOCGMIIREG: | |
373 | case SIOCSMIIREG: | |
656299f7 SH |
374 | if (netif_device_present(real_dev) && ops->ndo_do_ioctl) |
375 | err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); | |
1da177e4 | 376 | break; |
1da177e4 LT |
377 | } |
378 | ||
122952fc | 379 | if (!err) |
1da177e4 LT |
380 | ifr->ifr_ifru = ifrr.ifr_ifru; |
381 | ||
382 | return err; | |
383 | } | |
384 | ||
cc883d16 FB |
385 | static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) |
386 | { | |
387 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
388 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
389 | int err = 0; | |
390 | ||
391 | if (netif_device_present(real_dev) && ops->ndo_neigh_setup) | |
9d40bbda | 392 | err = ops->ndo_neigh_setup(real_dev, pa); |
cc883d16 FB |
393 | |
394 | return err; | |
395 | } | |
396 | ||
b85daa53 VD |
397 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
398 | static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, | |
399 | struct scatterlist *sgl, unsigned int sgc) | |
400 | { | |
401 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
402 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
403 | int rc = 0; | |
404 | ||
405 | if (ops->ndo_fcoe_ddp_setup) | |
406 | rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); | |
407 | ||
408 | return rc; | |
409 | } | |
410 | ||
411 | static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) | |
412 | { | |
413 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
414 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
415 | int len = 0; | |
416 | ||
417 | if (ops->ndo_fcoe_ddp_done) | |
418 | len = ops->ndo_fcoe_ddp_done(real_dev, xid); | |
419 | ||
420 | return len; | |
421 | } | |
0af46d99 YZ |
422 | |
423 | static int vlan_dev_fcoe_enable(struct net_device *dev) | |
424 | { | |
425 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
426 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
427 | int rc = -EINVAL; | |
428 | ||
429 | if (ops->ndo_fcoe_enable) | |
430 | rc = ops->ndo_fcoe_enable(real_dev); | |
431 | return rc; | |
432 | } | |
433 | ||
434 | static int vlan_dev_fcoe_disable(struct net_device *dev) | |
435 | { | |
436 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
437 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
438 | int rc = -EINVAL; | |
439 | ||
440 | if (ops->ndo_fcoe_disable) | |
441 | rc = ops->ndo_fcoe_disable(real_dev); | |
442 | return rc; | |
443 | } | |
d6534799 YZ |
444 | |
445 | static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) | |
446 | { | |
447 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
448 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
449 | int rc = -EINVAL; | |
450 | ||
451 | if (ops->ndo_fcoe_get_wwn) | |
452 | rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); | |
453 | return rc; | |
454 | } | |
4ea09c9c YZ |
455 | |
456 | static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, | |
457 | struct scatterlist *sgl, unsigned int sgc) | |
458 | { | |
459 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
460 | const struct net_device_ops *ops = real_dev->netdev_ops; | |
461 | int rc = 0; | |
462 | ||
463 | if (ops->ndo_fcoe_ddp_target) | |
464 | rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); | |
465 | ||
466 | return rc; | |
467 | } | |
b85daa53 VD |
468 | #endif |
469 | ||
ef3eb3e5 | 470 | static void vlan_dev_change_rx_flags(struct net_device *dev, int change) |
6c78dcbd | 471 | { |
9dfebcc6 | 472 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
6c78dcbd PM |
473 | |
474 | if (change & IFF_ALLMULTI) | |
475 | dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
476 | if (change & IFF_PROMISC) | |
477 | dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); | |
478 | } | |
479 | ||
e83a2ea8 | 480 | static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) |
1da177e4 | 481 | { |
9dfebcc6 | 482 | dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
a748ee24 | 483 | dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
1da177e4 | 484 | } |
ef3eb3e5 PM |
485 | |
486 | /* | |
487 | * vlan network devices have devices nesting below it, and are a special | |
488 | * "super class" of normal network devices; split their locks off into a | |
489 | * separate class since they always nest. | |
490 | */ | |
491 | static struct lock_class_key vlan_netdev_xmit_lock_key; | |
cf508b12 | 492 | static struct lock_class_key vlan_netdev_addr_lock_key; |
ef3eb3e5 | 493 | |
e8a0464c DM |
494 | static void vlan_dev_set_lockdep_one(struct net_device *dev, |
495 | struct netdev_queue *txq, | |
496 | void *_subclass) | |
c773e847 DM |
497 | { |
498 | lockdep_set_class_and_subclass(&txq->_xmit_lock, | |
e8a0464c DM |
499 | &vlan_netdev_xmit_lock_key, |
500 | *(int *)_subclass); | |
c773e847 DM |
501 | } |
502 | ||
503 | static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) | |
504 | { | |
cf508b12 DM |
505 | lockdep_set_class_and_subclass(&dev->addr_list_lock, |
506 | &vlan_netdev_addr_lock_key, | |
507 | subclass); | |
e8a0464c | 508 | netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); |
c773e847 DM |
509 | } |
510 | ||
ef3eb3e5 PM |
511 | static const struct header_ops vlan_header_ops = { |
512 | .create = vlan_dev_hard_header, | |
513 | .rebuild = vlan_dev_rebuild_header, | |
514 | .parse = eth_header_parse, | |
515 | }; | |
516 | ||
213b15ca | 517 | static const struct net_device_ops vlan_netdev_ops; |
f7d1b9f5 | 518 | |
ef3eb3e5 PM |
519 | static int vlan_dev_init(struct net_device *dev) |
520 | { | |
9dfebcc6 | 521 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
ef3eb3e5 PM |
522 | int subclass = 0; |
523 | ||
adc667e8 JV |
524 | netif_carrier_off(dev); |
525 | ||
ef3eb3e5 | 526 | /* IFF_BROADCAST|IFF_MULTICAST; ??? */ |
194dbcc8 JF |
527 | dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | |
528 | IFF_MASTER | IFF_SLAVE); | |
ef3eb3e5 PM |
529 | dev->iflink = real_dev->ifindex; |
530 | dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | | |
531 | (1<<__LINK_STATE_DORMANT))) | | |
532 | (1<<__LINK_STATE_PRESENT); | |
533 | ||
8a0427bb MM |
534 | dev->hw_features = real_dev->vlan_features & NETIF_F_ALL_TX_OFFLOADS; |
535 | dev->features |= real_dev->vlan_features | NETIF_F_LLTX; | |
1ae4be22 | 536 | dev->gso_max_size = real_dev->gso_max_size; |
5fb13570 | 537 | |
ef3eb3e5 PM |
538 | /* ipv6 shared card related stuff */ |
539 | dev->dev_id = real_dev->dev_id; | |
540 | ||
541 | if (is_zero_ether_addr(dev->dev_addr)) | |
542 | memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); | |
543 | if (is_zero_ether_addr(dev->broadcast)) | |
544 | memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); | |
545 | ||
b85daa53 VD |
546 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
547 | dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; | |
548 | #endif | |
549 | ||
d870bfb9 | 550 | dev->needed_headroom = real_dev->needed_headroom; |
ef3eb3e5 PM |
551 | if (real_dev->features & NETIF_F_HW_VLAN_TX) { |
552 | dev->header_ops = real_dev->header_ops; | |
553 | dev->hard_header_len = real_dev->hard_header_len; | |
ef3eb3e5 PM |
554 | } else { |
555 | dev->header_ops = &vlan_header_ops; | |
556 | dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; | |
ef3eb3e5 PM |
557 | } |
558 | ||
213b15ca | 559 | dev->netdev_ops = &vlan_netdev_ops; |
636e19a3 | 560 | |
26a25239 | 561 | if (is_vlan_dev(real_dev)) |
ef3eb3e5 PM |
562 | subclass = 1; |
563 | ||
c773e847 | 564 | vlan_dev_set_lockdep_class(dev, subclass); |
9793241f | 565 | |
4af429d2 ED |
566 | vlan_dev_info(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats); |
567 | if (!vlan_dev_info(dev)->vlan_pcpu_stats) | |
9793241f ED |
568 | return -ENOMEM; |
569 | ||
ef3eb3e5 PM |
570 | return 0; |
571 | } | |
572 | ||
23556323 PE |
573 | static void vlan_dev_uninit(struct net_device *dev) |
574 | { | |
575 | struct vlan_priority_tci_mapping *pm; | |
576 | struct vlan_dev_info *vlan = vlan_dev_info(dev); | |
577 | int i; | |
578 | ||
4af429d2 ED |
579 | free_percpu(vlan->vlan_pcpu_stats); |
580 | vlan->vlan_pcpu_stats = NULL; | |
23556323 PE |
581 | for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { |
582 | while ((pm = vlan->egress_priority_map[i]) != NULL) { | |
583 | vlan->egress_priority_map[i] = pm->next; | |
584 | kfree(pm); | |
585 | } | |
586 | } | |
587 | } | |
588 | ||
8a0427bb MM |
589 | static u32 vlan_dev_fix_features(struct net_device *dev, u32 features) |
590 | { | |
591 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; | |
592 | ||
593 | features &= (real_dev->features | NETIF_F_LLTX); | |
594 | if (dev_ethtool_get_rx_csum(real_dev)) | |
595 | features |= NETIF_F_RXCSUM; | |
596 | ||
597 | return features; | |
598 | } | |
599 | ||
b3020061 SH |
600 | static int vlan_ethtool_get_settings(struct net_device *dev, |
601 | struct ethtool_cmd *cmd) | |
602 | { | |
603 | const struct vlan_dev_info *vlan = vlan_dev_info(dev); | |
b1b67dd4 | 604 | return dev_ethtool_get_settings(vlan->real_dev, cmd); |
b3020061 SH |
605 | } |
606 | ||
607 | static void vlan_ethtool_get_drvinfo(struct net_device *dev, | |
608 | struct ethtool_drvinfo *info) | |
609 | { | |
610 | strcpy(info->driver, vlan_fullname); | |
611 | strcpy(info->version, vlan_version); | |
612 | strcpy(info->fw_version, "N/A"); | |
613 | } | |
614 | ||
28172739 | 615 | static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
9793241f | 616 | { |
9793241f | 617 | |
4af429d2 ED |
618 | if (vlan_dev_info(dev)->vlan_pcpu_stats) { |
619 | struct vlan_pcpu_stats *p; | |
620 | u32 rx_errors = 0, tx_dropped = 0; | |
9793241f ED |
621 | int i; |
622 | ||
623 | for_each_possible_cpu(i) { | |
4af429d2 | 624 | u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; |
9618e2ff ED |
625 | unsigned int start; |
626 | ||
4af429d2 | 627 | p = per_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats, i); |
9618e2ff ED |
628 | do { |
629 | start = u64_stats_fetch_begin_bh(&p->syncp); | |
630 | rxpackets = p->rx_packets; | |
631 | rxbytes = p->rx_bytes; | |
632 | rxmulticast = p->rx_multicast; | |
4af429d2 ED |
633 | txpackets = p->tx_packets; |
634 | txbytes = p->tx_bytes; | |
9618e2ff | 635 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); |
4af429d2 ED |
636 | |
637 | stats->rx_packets += rxpackets; | |
638 | stats->rx_bytes += rxbytes; | |
639 | stats->multicast += rxmulticast; | |
640 | stats->tx_packets += txpackets; | |
641 | stats->tx_bytes += txbytes; | |
642 | /* rx_errors & tx_dropped are u32 */ | |
643 | rx_errors += p->rx_errors; | |
644 | tx_dropped += p->tx_dropped; | |
9793241f | 645 | } |
4af429d2 ED |
646 | stats->rx_errors = rx_errors; |
647 | stats->tx_dropped = tx_dropped; | |
9793241f ED |
648 | } |
649 | return stats; | |
650 | } | |
651 | ||
75b8846a | 652 | static const struct ethtool_ops vlan_ethtool_ops = { |
b3020061 SH |
653 | .get_settings = vlan_ethtool_get_settings, |
654 | .get_drvinfo = vlan_ethtool_get_drvinfo, | |
75b8846a | 655 | .get_link = ethtool_op_get_link, |
75b8846a PM |
656 | }; |
657 | ||
656299f7 SH |
658 | static const struct net_device_ops vlan_netdev_ops = { |
659 | .ndo_change_mtu = vlan_dev_change_mtu, | |
660 | .ndo_init = vlan_dev_init, | |
661 | .ndo_uninit = vlan_dev_uninit, | |
662 | .ndo_open = vlan_dev_open, | |
663 | .ndo_stop = vlan_dev_stop, | |
669d3e0b VD |
664 | .ndo_start_xmit = vlan_dev_hard_start_xmit, |
665 | .ndo_validate_addr = eth_validate_addr, | |
666 | .ndo_set_mac_address = vlan_dev_set_mac_address, | |
667 | .ndo_set_rx_mode = vlan_dev_set_rx_mode, | |
668 | .ndo_set_multicast_list = vlan_dev_set_rx_mode, | |
669 | .ndo_change_rx_flags = vlan_dev_change_rx_flags, | |
670 | .ndo_do_ioctl = vlan_dev_ioctl, | |
671 | .ndo_neigh_setup = vlan_dev_neigh_setup, | |
9618e2ff | 672 | .ndo_get_stats64 = vlan_dev_get_stats64, |
669d3e0b VD |
673 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
674 | .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, | |
675 | .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, | |
676 | .ndo_fcoe_enable = vlan_dev_fcoe_enable, | |
677 | .ndo_fcoe_disable = vlan_dev_fcoe_disable, | |
678 | .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, | |
4ea09c9c | 679 | .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, |
669d3e0b | 680 | #endif |
8a0427bb | 681 | .ndo_fix_features = vlan_dev_fix_features, |
669d3e0b VD |
682 | }; |
683 | ||
ef3eb3e5 PM |
684 | void vlan_setup(struct net_device *dev) |
685 | { | |
686 | ether_setup(dev); | |
687 | ||
688 | dev->priv_flags |= IFF_802_1Q_VLAN; | |
93f154b5 | 689 | dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
ef3eb3e5 PM |
690 | dev->tx_queue_len = 0; |
691 | ||
656299f7 | 692 | dev->netdev_ops = &vlan_netdev_ops; |
ef3eb3e5 | 693 | dev->destructor = free_netdev; |
75b8846a | 694 | dev->ethtool_ops = &vlan_ethtool_ops; |
ef3eb3e5 PM |
695 | |
696 | memset(dev->broadcast, 0, ETH_ALEN); | |
697 | } |