blob: 8af508536d36b539117ffeecfc8e7b47200bd72d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* -*- linux-c -*-
2 * INET 802.1Q VLAN
3 * Ethernet-type device handling.
4 *
5 * Authors: Ben Greear <greearb@candelatech.com>
Patrick McHardyad712082008-01-21 00:27:00 -08006 * Please send support related email to: netdev@vger.kernel.org
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +09008 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 * 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.
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090015 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 *
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
Joe Perchesafab2d22011-05-26 10:58:31 +000023#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <linux/module.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090026#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/skbuff.h>
28#include <linux/netdevice.h>
29#include <linux/etherdevice.h>
Patrick McHardy75b88462008-07-08 03:22:42 -070030#include <linux/ethtool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <net/arp.h>
32
33#include "vlan.h"
34#include "vlanproc.h"
35#include <linux/if_vlan.h>
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +000036#include <linux/netpoll.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
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 */
Patrick McHardyef3eb3e2008-01-21 00:22:11 -080048static int vlan_dev_rebuild_header(struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -070049{
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
Arnaldo Carvalho de Melo60678042008-09-20 22:20:49 -070055 case htons(ETH_P_IP):
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57 /* TODO: Confirm this will work with VLAN headers... */
58 return arp_find(veth->h_dest, skb);
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090059#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 default:
Joe Perchesafab2d22011-05-26 10:58:31 +000061 pr_debug("%s: unable to resolve type %X addresses\n",
Patrick McHardy40f98e12008-01-21 00:24:30 -080062 dev->name, ntohs(veth->h_vlan_encapsulated_proto));
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090063
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 memcpy(veth->h_source, dev->dev_addr, ETH_ALEN);
65 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -070066 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
68 return 0;
69}
70
Patrick McHardy9bb85822008-07-08 03:24:44 -070071static inline u16
Patrick McHardy2029cc22008-01-21 00:26:41 -080072vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073{
Patrick McHardy2029cc22008-01-21 00:26:41 -080074 struct vlan_priority_tci_mapping *mp;
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
Jiri Pirko7da82c02011-12-08 04:11:15 +000076 mp = vlan_dev_priv(dev)->egress_priority_map[(skb->priority & 0xF)];
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 while (mp) {
78 if (mp->priority == skb->priority) {
Patrick McHardy2029cc22008-01-21 00:26:41 -080079 return mp->vlan_qos; /* This should already be shifted
80 * to mask correctly with the
81 * VLAN's TCI */
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 }
83 mp = mp->next;
84 }
85 return 0;
86}
87
88/*
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090089 * Create the VLAN header for an arbitrary protocol layer
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 *
91 * saddr=NULL means use device source address
92 * daddr=NULL means leave destination address (eg unresolved arp)
93 *
94 * This is called when the SKB is moving down the stack towards the
95 * physical devices.
96 */
Patrick McHardyef3eb3e2008-01-21 00:22:11 -080097static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
98 unsigned short type,
99 const void *daddr, const void *saddr,
100 unsigned int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101{
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000102 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 struct vlan_hdr *vhdr;
Patrick McHardy1349fe92008-07-14 22:51:19 -0700104 unsigned int vhdrlen = 0;
Patrick McHardy9bb85822008-07-08 03:24:44 -0700105 u16 vlan_tci = 0;
Patrick McHardy1349fe92008-07-14 22:51:19 -0700106 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Jiri Pirko7da82c02011-12-08 04:11:15 +0000108 if (!(vlan_dev_priv(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
110
Jiri Pirko7da82c02011-12-08 04:11:15 +0000111 vlan_tci = vlan_dev_priv(dev)->vlan_id;
Patrick McHardy9bb85822008-07-08 03:24:44 -0700112 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
Patrick McHardy9bb85822008-07-08 03:24:44 -0700113 vhdr->h_vlan_TCI = htons(vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
115 /*
Octavian Purdilabf9ae532009-12-26 11:50:59 +0000116 * Set the protocol type. For a packet of type ETH_P_802_3/2 we
117 * put the length in here instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 */
Octavian Purdilabf9ae532009-12-26 11:50:59 +0000119 if (type != ETH_P_802_3 && type != ETH_P_802_2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 vhdr->h_vlan_encapsulated_proto = htons(type);
Patrick McHardy2029cc22008-01-21 00:26:41 -0800121 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 vhdr->h_vlan_encapsulated_proto = htons(len);
Jerome Borsboom279e1722007-04-13 16:12:47 -0700123
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000124 skb->protocol = vlan->vlan_proto;
125 type = ntohs(vlan->vlan_proto);
Patrick McHardy1349fe92008-07-14 22:51:19 -0700126 vhdrlen = VLAN_HLEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 }
128
129 /* Before delegating work to the lower layer, enter our MAC-address */
130 if (saddr == NULL)
131 saddr = dev->dev_addr;
132
Patrick McHardy1349fe92008-07-14 22:51:19 -0700133 /* Now make the underlying real hard header */
Jiri Pirko7da82c02011-12-08 04:11:15 +0000134 dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy1349fe92008-07-14 22:51:19 -0700135 rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
136 if (rc > 0)
137 rc += vhdrlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 return rc;
139}
140
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000141static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
142{
143#ifdef CONFIG_NET_POLL_CONTROLLER
144 if (vlan->netpoll)
145 netpoll_send_skb(vlan->netpoll, skb);
146#else
147 BUG();
148#endif
149 return NETDEV_TX_OK;
150}
151
Stephen Hemminger6fef4c02009-08-31 19:50:41 +0000152static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
153 struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154{
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000155 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
Eric Dumazet1a123a32009-09-03 00:39:16 +0000157 unsigned int len;
158 int ret;
David S. Miller55b01e82008-02-23 20:09:11 -0800159
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 /* Handle non-VLAN frames if they are sent to us, for example by DHCP.
161 *
162 * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
163 * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
164 */
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000165 if (veth->h_vlan_proto != vlan->vlan_proto ||
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000166 vlan->flags & VLAN_FLAG_REORDER_HDR) {
Patrick McHardy9bb85822008-07-08 03:24:44 -0700167 u16 vlan_tci;
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000168 vlan_tci = vlan->vlan_id;
Patrick McHardy9bb85822008-07-08 03:24:44 -0700169 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
Patrick McHardy86a9bad2013-04-19 02:04:30 +0000170 skb = __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 }
172
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000173 skb->dev = vlan->real_dev;
Eric Dumazet1a123a32009-09-03 00:39:16 +0000174 len = skb->len;
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000175 if (unlikely(netpoll_tx_running(dev)))
176 return vlan_netpoll_send_skb(vlan, skb);
177
Eric Dumazet1a123a32009-09-03 00:39:16 +0000178 ret = dev_queue_xmit(skb);
179
Eric Dumazet2d6c9ff2010-05-10 04:51:02 +0000180 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
Eric Dumazet4af429d2010-11-10 23:42:00 +0000181 struct vlan_pcpu_stats *stats;
182
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000183 stats = this_cpu_ptr(vlan->vlan_pcpu_stats);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000184 u64_stats_update_begin(&stats->syncp);
185 stats->tx_packets++;
186 stats->tx_bytes += len;
Wei Yongjun307f73d2011-05-31 22:53:19 +0000187 u64_stats_update_end(&stats->syncp);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000188 } else {
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000189 this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000190 }
Eric Dumazet1a123a32009-09-03 00:39:16 +0000191
Patrick McHardycbbef5e2009-11-10 06:14:24 +0000192 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193}
194
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800195static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196{
197 /* TODO: gotta make sure the underlying layer can handle it,
198 * maybe an IFF_VLAN_CAPABLE flag for devices?
199 */
Jiri Pirko7da82c02011-12-08 04:11:15 +0000200 if (vlan_dev_priv(dev)->real_dev->mtu < new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 return -ERANGE;
202
203 dev->mtu = new_mtu;
204
205 return 0;
206}
207
Patrick McHardyc17d8872007-06-13 12:05:22 -0700208void vlan_dev_set_ingress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700209 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000211 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb020cb42007-06-13 12:07:22 -0700212
213 if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
214 vlan->nr_ingress_mappings--;
215 else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
216 vlan->nr_ingress_mappings++;
217
218 vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219}
220
Patrick McHardyc17d8872007-06-13 12:05:22 -0700221int vlan_dev_set_egress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700222 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000224 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 struct vlan_priority_tci_mapping *mp = NULL;
226 struct vlan_priority_tci_mapping *np;
Eric Dumazet05423b22009-10-26 18:40:35 -0700227 u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900228
Patrick McHardyc17d8872007-06-13 12:05:22 -0700229 /* See if a priority mapping exists.. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700230 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700231 while (mp) {
232 if (mp->priority == skb_prio) {
Patrick McHardyb020cb42007-06-13 12:07:22 -0700233 if (mp->vlan_qos && !vlan_qos)
234 vlan->nr_egress_mappings--;
235 else if (!mp->vlan_qos && vlan_qos)
236 vlan->nr_egress_mappings++;
237 mp->vlan_qos = vlan_qos;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700238 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700240 mp = mp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700242
243 /* Create a new mapping then. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700244 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700245 np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
246 if (!np)
247 return -ENOBUFS;
248
249 np->next = mp;
250 np->priority = skb_prio;
Patrick McHardyb020cb42007-06-13 12:07:22 -0700251 np->vlan_qos = vlan_qos;
252 vlan->egress_priority_map[skb_prio & 0xF] = np;
253 if (vlan_qos)
254 vlan->nr_egress_mappings++;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700255 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256}
257
Patrick McHardya4bf3af42007-06-13 12:07:37 -0700258/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700259int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000261 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700262 u32 old_flags = vlan->flags;
263
Patrick McHardy5e756592009-11-25 07:54:54 +0000264 if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
David Ward86fbe9b2013-02-08 17:17:07 +0000265 VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP))
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700266 return -EINVAL;
267
268 vlan->flags = (old_flags & ~mask) | (flags & mask);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700269
270 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
271 if (vlan->flags & VLAN_FLAG_GVRP)
272 vlan_gvrp_request_join(dev);
273 else
274 vlan_gvrp_request_leave(dev);
275 }
David Ward86fbe9b2013-02-08 17:17:07 +0000276
277 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) {
278 if (vlan->flags & VLAN_FLAG_MVRP)
279 vlan_mvrp_request_join(dev);
280 else
281 vlan_mvrp_request_leave(dev);
282 }
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700283 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284}
285
Patrick McHardyc17d8872007-06-13 12:05:22 -0700286void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000288 strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289}
290
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800291static int vlan_dev_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000293 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700294 struct net_device *real_dev = vlan->real_dev;
295 int err;
296
Patrick McHardy5e756592009-11-25 07:54:54 +0000297 if (!(real_dev->flags & IFF_UP) &&
298 !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 return -ENETDOWN;
300
Joe Perches53a2b3a2012-05-08 18:56:47 +0000301 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000302 err = dev_uc_add(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700303 if (err < 0)
Wang Chen89146502008-07-14 20:59:03 -0700304 goto out;
Patrick McHardy8c979c22007-07-11 19:45:24 -0700305 }
Patrick McHardy8c979c22007-07-11 19:45:24 -0700306
Wang Chen89146502008-07-14 20:59:03 -0700307 if (dev->flags & IFF_ALLMULTI) {
308 err = dev_set_allmulti(real_dev, 1);
309 if (err < 0)
310 goto del_unicast;
311 }
312 if (dev->flags & IFF_PROMISC) {
313 err = dev_set_promiscuity(real_dev, 1);
314 if (err < 0)
315 goto clear_allmulti;
316 }
317
318 memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700319
Patrick McHardy70c03b42008-07-05 21:26:57 -0700320 if (vlan->flags & VLAN_FLAG_GVRP)
321 vlan_gvrp_request_join(dev);
322
David Ward86fbe9b2013-02-08 17:17:07 +0000323 if (vlan->flags & VLAN_FLAG_MVRP)
324 vlan_mvrp_request_join(dev);
325
Phil Oester0ac820e2010-08-17 18:45:08 +0000326 if (netif_carrier_ok(real_dev))
327 netif_carrier_on(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 return 0;
Wang Chen89146502008-07-14 20:59:03 -0700329
330clear_allmulti:
331 if (dev->flags & IFF_ALLMULTI)
332 dev_set_allmulti(real_dev, -1);
333del_unicast:
Joe Perches53a2b3a2012-05-08 18:56:47 +0000334 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000335 dev_uc_del(real_dev, dev->dev_addr);
Wang Chen89146502008-07-14 20:59:03 -0700336out:
Jay Vosburghadc667e2009-04-25 18:03:35 -0700337 netif_carrier_off(dev);
Wang Chen89146502008-07-14 20:59:03 -0700338 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339}
340
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800341static int vlan_dev_stop(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000343 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700344 struct net_device *real_dev = vlan->real_dev;
345
Patrick McHardy56addd62007-07-14 18:53:28 -0700346 dev_mc_unsync(real_dev, dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000347 dev_uc_unsync(real_dev, dev);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700348 if (dev->flags & IFF_ALLMULTI)
349 dev_set_allmulti(real_dev, -1);
350 if (dev->flags & IFF_PROMISC)
351 dev_set_promiscuity(real_dev, -1);
352
Joe Perches53a2b3a2012-05-08 18:56:47 +0000353 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000354 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700355
Jay Vosburghadc667e2009-04-25 18:03:35 -0700356 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 return 0;
358}
359
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800360static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
Patrick McHardy39aaac12007-11-10 21:52:35 -0800361{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000362 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy39aaac12007-11-10 21:52:35 -0800363 struct sockaddr *addr = p;
364 int err;
365
366 if (!is_valid_ether_addr(addr->sa_data))
367 return -EADDRNOTAVAIL;
368
369 if (!(dev->flags & IFF_UP))
370 goto out;
371
Joe Perches53a2b3a2012-05-08 18:56:47 +0000372 if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000373 err = dev_uc_add(real_dev, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800374 if (err < 0)
375 return err;
376 }
377
Joe Perches53a2b3a2012-05-08 18:56:47 +0000378 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000379 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800380
381out:
382 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
383 return 0;
384}
385
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800386static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000388 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Stephen Hemminger656299f2008-11-19 21:53:47 -0800389 const struct net_device_ops *ops = real_dev->netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 struct ifreq ifrr;
391 int err = -EOPNOTSUPP;
392
393 strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
394 ifrr.ifr_ifru = ifr->ifr_ifru;
395
Patrick McHardy2029cc22008-01-21 00:26:41 -0800396 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 case SIOCGMIIPHY:
398 case SIOCGMIIREG:
399 case SIOCSMIIREG:
Stephen Hemminger656299f2008-11-19 21:53:47 -0800400 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
401 err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 }
404
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900405 if (!err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 ifr->ifr_ifru = ifrr.ifr_ifru;
407
408 return err;
409}
410
Frank Blaschkacc883d12009-01-08 10:50:20 -0800411static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
412{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000413 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Frank Blaschkacc883d12009-01-08 10:50:20 -0800414 const struct net_device_ops *ops = real_dev->netdev_ops;
415 int err = 0;
416
417 if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
David S. Miller9d40bbd2009-03-04 23:46:25 -0800418 err = ops->ndo_neigh_setup(real_dev, pa);
Frank Blaschkacc883d12009-01-08 10:50:20 -0800419
420 return err;
421}
422
Amerigo Wangf4d53922012-10-29 17:22:28 +0000423#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000424static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
425 struct scatterlist *sgl, unsigned int sgc)
426{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000427 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000428 const struct net_device_ops *ops = real_dev->netdev_ops;
429 int rc = 0;
430
431 if (ops->ndo_fcoe_ddp_setup)
432 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
433
434 return rc;
435}
436
437static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
438{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000439 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000440 const struct net_device_ops *ops = real_dev->netdev_ops;
441 int len = 0;
442
443 if (ops->ndo_fcoe_ddp_done)
444 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
445
446 return len;
447}
Yi Zou0af46d92009-08-31 12:31:55 +0000448
449static int vlan_dev_fcoe_enable(struct net_device *dev)
450{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000451 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000452 const struct net_device_ops *ops = real_dev->netdev_ops;
453 int rc = -EINVAL;
454
455 if (ops->ndo_fcoe_enable)
456 rc = ops->ndo_fcoe_enable(real_dev);
457 return rc;
458}
459
460static int vlan_dev_fcoe_disable(struct net_device *dev)
461{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000462 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000463 const struct net_device_ops *ops = real_dev->netdev_ops;
464 int rc = -EINVAL;
465
466 if (ops->ndo_fcoe_disable)
467 rc = ops->ndo_fcoe_disable(real_dev);
468 return rc;
469}
Yi Zoud6534792009-10-28 18:25:16 +0000470
471static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
472{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000473 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zoud6534792009-10-28 18:25:16 +0000474 const struct net_device_ops *ops = real_dev->netdev_ops;
475 int rc = -EINVAL;
476
477 if (ops->ndo_fcoe_get_wwn)
478 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
479 return rc;
480}
Yi Zou4ea09c92011-02-01 07:22:11 +0000481
482static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
483 struct scatterlist *sgl, unsigned int sgc)
484{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000485 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou4ea09c92011-02-01 07:22:11 +0000486 const struct net_device_ops *ops = real_dev->netdev_ops;
487 int rc = 0;
488
489 if (ops->ndo_fcoe_ddp_target)
490 rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
491
492 return rc;
493}
Vasu Devb85daa52009-08-14 12:41:07 +0000494#endif
495
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800496static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700497{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000498 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700499
Matthijs Kooijmandeede2f2011-10-31 04:53:13 +0000500 if (dev->flags & IFF_UP) {
501 if (change & IFF_ALLMULTI)
502 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
503 if (change & IFF_PROMISC)
504 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
505 }
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700506}
507
Chris Leeche83a2ea2008-01-31 16:53:23 -0800508static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000510 dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
511 dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512}
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800513
514/*
515 * vlan network devices have devices nesting below it, and are a special
516 * "super class" of normal network devices; split their locks off into a
517 * separate class since they always nest.
518 */
519static struct lock_class_key vlan_netdev_xmit_lock_key;
David S. Millercf508b12008-07-22 14:16:42 -0700520static struct lock_class_key vlan_netdev_addr_lock_key;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800521
David S. Millere8a04642008-07-17 00:34:19 -0700522static void vlan_dev_set_lockdep_one(struct net_device *dev,
523 struct netdev_queue *txq,
524 void *_subclass)
David S. Millerc773e842008-07-08 23:13:53 -0700525{
526 lockdep_set_class_and_subclass(&txq->_xmit_lock,
David S. Millere8a04642008-07-17 00:34:19 -0700527 &vlan_netdev_xmit_lock_key,
528 *(int *)_subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700529}
530
531static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
532{
David S. Millercf508b12008-07-22 14:16:42 -0700533 lockdep_set_class_and_subclass(&dev->addr_list_lock,
534 &vlan_netdev_addr_lock_key,
535 subclass);
David S. Millere8a04642008-07-17 00:34:19 -0700536 netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700537}
538
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800539static const struct header_ops vlan_header_ops = {
540 .create = vlan_dev_hard_header,
541 .rebuild = vlan_dev_rebuild_header,
542 .parse = eth_header_parse,
543};
544
Doug Goldsteine949b092012-10-21 19:53:57 +0000545static struct device_type vlan_type = {
546 .name = "vlan",
547};
548
Eric Dumazet213b15c2010-11-11 09:42:45 +0000549static const struct net_device_ops vlan_netdev_ops;
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800550
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800551static int vlan_dev_init(struct net_device *dev)
552{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000553 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800554 int subclass = 0;
555
Jay Vosburghadc667e2009-04-25 18:03:35 -0700556 netif_carrier_off(dev);
557
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800558 /* IFF_BROADCAST|IFF_MULTICAST; ??? */
John Fastabend194dbcc2010-05-12 21:31:06 +0000559 dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
560 IFF_MASTER | IFF_SLAVE);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800561 dev->iflink = real_dev->ifindex;
562 dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
563 (1<<__LINK_STATE_DORMANT))) |
564 (1<<__LINK_STATE_PRESENT);
565
Michał Mirosław62f2a3a2011-07-13 14:10:29 +0000566 dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG |
567 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO |
568 NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM |
569 NETIF_F_ALL_FCOE;
570
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700571 dev->features |= real_dev->vlan_features | NETIF_F_LLTX;
Alexander Duyck1ae4be22008-09-11 20:17:05 -0700572 dev->gso_max_size = real_dev->gso_max_size;
Patrick McHardy5fb13572008-05-20 14:54:50 -0700573
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800574 /* ipv6 shared card related stuff */
575 dev->dev_id = real_dev->dev_id;
576
577 if (is_zero_ether_addr(dev->dev_addr))
578 memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len);
579 if (is_zero_ether_addr(dev->broadcast))
580 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
581
Amerigo Wangf4d53922012-10-29 17:22:28 +0000582#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000583 dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
584#endif
585
Eric Dumazetd870bfb2011-03-18 00:27:27 +0000586 dev->needed_headroom = real_dev->needed_headroom;
Patrick McHardyf6469682013-04-19 02:04:27 +0000587 if (real_dev->features & NETIF_F_HW_VLAN_CTAG_TX) {
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800588 dev->header_ops = real_dev->header_ops;
589 dev->hard_header_len = real_dev->hard_header_len;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800590 } else {
591 dev->header_ops = &vlan_header_ops;
592 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800593 }
594
Eric Dumazet213b15c2010-11-11 09:42:45 +0000595 dev->netdev_ops = &vlan_netdev_ops;
John Fastabend636e19a2010-10-30 14:22:42 +0000596
Doug Goldsteine949b092012-10-21 19:53:57 +0000597 SET_NETDEV_DEVTYPE(dev, &vlan_type);
598
Joonwoo Park26a25232008-07-08 03:22:16 -0700599 if (is_vlan_dev(real_dev))
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800600 subclass = 1;
601
David S. Millerc773e842008-07-08 23:13:53 -0700602 vlan_dev_set_lockdep_class(dev, subclass);
Eric Dumazet97932412009-11-17 04:53:09 +0000603
Jiri Pirko7da82c02011-12-08 04:11:15 +0000604 vlan_dev_priv(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats);
605 if (!vlan_dev_priv(dev)->vlan_pcpu_stats)
Eric Dumazet97932412009-11-17 04:53:09 +0000606 return -ENOMEM;
607
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800608 return 0;
609}
610
Pavel Emelyanov23556322008-04-04 12:45:12 -0700611static void vlan_dev_uninit(struct net_device *dev)
612{
613 struct vlan_priority_tci_mapping *pm;
Jiri Pirko7da82c02011-12-08 04:11:15 +0000614 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Pavel Emelyanov23556322008-04-04 12:45:12 -0700615 int i;
616
Eric Dumazet4af429d2010-11-10 23:42:00 +0000617 free_percpu(vlan->vlan_pcpu_stats);
618 vlan->vlan_pcpu_stats = NULL;
Pavel Emelyanov23556322008-04-04 12:45:12 -0700619 for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
620 while ((pm = vlan->egress_priority_map[i]) != NULL) {
621 vlan->egress_priority_map[i] = pm->next;
622 kfree(pm);
623 }
624 }
625}
626
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000627static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
628 netdev_features_t features)
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700629{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000630 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Shan Wei712ae512011-07-05 20:43:12 -0700631 u32 old_features = features;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700632
Michał Mirosławf0a619c2011-05-06 07:56:29 +0000633 features &= real_dev->vlan_features;
Michał Mirosławbc5787c62011-11-15 15:29:55 +0000634 features |= NETIF_F_RXCSUM;
635 features &= real_dev->features;
Shan Wei712ae512011-07-05 20:43:12 -0700636
Michał Mirosław6c9c1b52011-07-14 14:39:29 -0700637 features |= old_features & NETIF_F_SOFT_FEATURES;
Michał Mirosławf0a619c2011-05-06 07:56:29 +0000638 features |= NETIF_F_LLTX;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700639
640 return features;
641}
642
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700643static int vlan_ethtool_get_settings(struct net_device *dev,
644 struct ethtool_cmd *cmd)
645{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000646 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Jiri Pirko4bc71cb2011-09-03 03:34:30 +0000647
648 return __ethtool_get_settings(vlan->real_dev, cmd);
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700649}
650
651static void vlan_ethtool_get_drvinfo(struct net_device *dev,
652 struct ethtool_drvinfo *info)
653{
Jiri Pirko7826d432013-01-06 00:44:26 +0000654 strlcpy(info->driver, vlan_fullname, sizeof(info->driver));
655 strlcpy(info->version, vlan_version, sizeof(info->version));
656 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700657}
658
Eric Dumazet28172732010-07-07 14:58:56 -0700659static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
Eric Dumazet97932412009-11-17 04:53:09 +0000660{
Eric Dumazet97932412009-11-17 04:53:09 +0000661
Jiri Pirko7da82c02011-12-08 04:11:15 +0000662 if (vlan_dev_priv(dev)->vlan_pcpu_stats) {
Eric Dumazet4af429d2010-11-10 23:42:00 +0000663 struct vlan_pcpu_stats *p;
664 u32 rx_errors = 0, tx_dropped = 0;
Eric Dumazet97932412009-11-17 04:53:09 +0000665 int i;
666
667 for_each_possible_cpu(i) {
Eric Dumazet4af429d2010-11-10 23:42:00 +0000668 u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000669 unsigned int start;
670
Jiri Pirko7da82c02011-12-08 04:11:15 +0000671 p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000672 do {
673 start = u64_stats_fetch_begin_bh(&p->syncp);
674 rxpackets = p->rx_packets;
675 rxbytes = p->rx_bytes;
676 rxmulticast = p->rx_multicast;
Eric Dumazet4af429d2010-11-10 23:42:00 +0000677 txpackets = p->tx_packets;
678 txbytes = p->tx_bytes;
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000679 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
Eric Dumazet4af429d2010-11-10 23:42:00 +0000680
681 stats->rx_packets += rxpackets;
682 stats->rx_bytes += rxbytes;
683 stats->multicast += rxmulticast;
684 stats->tx_packets += txpackets;
685 stats->tx_bytes += txbytes;
686 /* rx_errors & tx_dropped are u32 */
687 rx_errors += p->rx_errors;
688 tx_dropped += p->tx_dropped;
Eric Dumazet97932412009-11-17 04:53:09 +0000689 }
Eric Dumazet4af429d2010-11-10 23:42:00 +0000690 stats->rx_errors = rx_errors;
691 stats->tx_dropped = tx_dropped;
Eric Dumazet97932412009-11-17 04:53:09 +0000692 }
693 return stats;
694}
695
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000696#ifdef CONFIG_NET_POLL_CONTROLLER
Eric Dumazetde93cb22011-12-13 20:57:54 +0000697static void vlan_dev_poll_controller(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000698{
699 return;
700}
701
Amerigo Wang47be03a22012-08-10 01:24:37 +0000702static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo,
703 gfp_t gfp)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000704{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000705 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
706 struct net_device *real_dev = vlan->real_dev;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000707 struct netpoll *netpoll;
708 int err = 0;
709
Amerigo Wang47be03a22012-08-10 01:24:37 +0000710 netpoll = kzalloc(sizeof(*netpoll), gfp);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000711 err = -ENOMEM;
712 if (!netpoll)
713 goto out;
714
Amerigo Wang47be03a22012-08-10 01:24:37 +0000715 err = __netpoll_setup(netpoll, real_dev, gfp);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000716 if (err) {
717 kfree(netpoll);
718 goto out;
719 }
720
Amerigo Wangf3da3892012-08-10 01:24:47 +0000721 vlan->netpoll = netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000722
723out:
724 return err;
725}
726
Eric Dumazetde93cb22011-12-13 20:57:54 +0000727static void vlan_dev_netpoll_cleanup(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000728{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000729 struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
730 struct netpoll *netpoll = vlan->netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000731
732 if (!netpoll)
733 return;
734
Amerigo Wangf3da3892012-08-10 01:24:47 +0000735 vlan->netpoll = NULL;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000736
Neil Horman2cde6ac2013-02-11 10:25:30 +0000737 __netpoll_free_async(netpoll);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000738}
739#endif /* CONFIG_NET_POLL_CONTROLLER */
740
Patrick McHardy75b88462008-07-08 03:22:42 -0700741static const struct ethtool_ops vlan_ethtool_ops = {
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700742 .get_settings = vlan_ethtool_get_settings,
743 .get_drvinfo = vlan_ethtool_get_drvinfo,
Patrick McHardy75b88462008-07-08 03:22:42 -0700744 .get_link = ethtool_op_get_link,
Patrick McHardy75b88462008-07-08 03:22:42 -0700745};
746
Stephen Hemminger656299f2008-11-19 21:53:47 -0800747static const struct net_device_ops vlan_netdev_ops = {
748 .ndo_change_mtu = vlan_dev_change_mtu,
749 .ndo_init = vlan_dev_init,
750 .ndo_uninit = vlan_dev_uninit,
751 .ndo_open = vlan_dev_open,
752 .ndo_stop = vlan_dev_stop,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800753 .ndo_start_xmit = vlan_dev_hard_start_xmit,
754 .ndo_validate_addr = eth_validate_addr,
755 .ndo_set_mac_address = vlan_dev_set_mac_address,
756 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800757 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
758 .ndo_do_ioctl = vlan_dev_ioctl,
Frank Blaschkacc883d12009-01-08 10:50:20 -0800759 .ndo_neigh_setup = vlan_dev_neigh_setup,
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000760 .ndo_get_stats64 = vlan_dev_get_stats64,
Amerigo Wangf4d53922012-10-29 17:22:28 +0000761#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000762 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
763 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
Yi Zou0af46d92009-08-31 12:31:55 +0000764 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
765 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
Yi Zoud6534792009-10-28 18:25:16 +0000766 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
Yi Zou4ea09c92011-02-01 07:22:11 +0000767 .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
Vasu Devb85daa52009-08-14 12:41:07 +0000768#endif
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000769#ifdef CONFIG_NET_POLL_CONTROLLER
770 .ndo_poll_controller = vlan_dev_poll_controller,
771 .ndo_netpoll_setup = vlan_dev_netpoll_setup,
772 .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup,
773#endif
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700774 .ndo_fix_features = vlan_dev_fix_features,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800775};
776
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800777void vlan_setup(struct net_device *dev)
778{
779 ether_setup(dev);
780
781 dev->priv_flags |= IFF_802_1Q_VLAN;
Neil Horman550fd082011-07-26 06:05:38 +0000782 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800783 dev->tx_queue_len = 0;
784
Stephen Hemminger656299f2008-11-19 21:53:47 -0800785 dev->netdev_ops = &vlan_netdev_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800786 dev->destructor = free_netdev;
Patrick McHardy75b88462008-07-08 03:22:42 -0700787 dev->ethtool_ops = &vlan_ethtool_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800788
789 memset(dev->broadcast, 0, ETH_ALEN);
790}