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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>
Richard Cochran37dd9252014-11-21 14:16:20 +010029#include <linux/net_tstamp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/etherdevice.h>
Patrick McHardy75b88462008-07-08 03:22:42 -070031#include <linux/ethtool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <net/arp.h>
33
34#include "vlan.h"
35#include "vlanproc.h"
36#include <linux/if_vlan.h>
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +000037#include <linux/netpoll.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
39/*
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090040 * Create the VLAN header for an arbitrary protocol layer
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 *
42 * saddr=NULL means use device source address
43 * daddr=NULL means leave destination address (eg unresolved arp)
44 *
45 * This is called when the SKB is moving down the stack towards the
46 * physical devices.
47 */
Patrick McHardyef3eb3e2008-01-21 00:22:11 -080048static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
49 unsigned short type,
50 const void *daddr, const void *saddr,
51 unsigned int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -070052{
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000053 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 struct vlan_hdr *vhdr;
Patrick McHardy1349fe92008-07-14 22:51:19 -070055 unsigned int vhdrlen = 0;
Patrick McHardy9bb85822008-07-08 03:24:44 -070056 u16 vlan_tci = 0;
Patrick McHardy1349fe92008-07-14 22:51:19 -070057 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Wang Sheng-Hui0c0667a2013-08-03 16:54:50 +080059 if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
61
Wang Sheng-Hui0c0667a2013-08-03 16:54:50 +080062 vlan_tci = vlan->vlan_id;
David S. Millere267cb92013-11-11 00:42:07 -050063 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
Patrick McHardy9bb85822008-07-08 03:24:44 -070064 vhdr->h_vlan_TCI = htons(vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66 /*
Octavian Purdilabf9ae532009-12-26 11:50:59 +000067 * Set the protocol type. For a packet of type ETH_P_802_3/2 we
68 * put the length in here instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 */
Octavian Purdilabf9ae532009-12-26 11:50:59 +000070 if (type != ETH_P_802_3 && type != ETH_P_802_2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 vhdr->h_vlan_encapsulated_proto = htons(type);
Patrick McHardy2029cc22008-01-21 00:26:41 -080072 else
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 vhdr->h_vlan_encapsulated_proto = htons(len);
Jerome Borsboom279e1722007-04-13 16:12:47 -070074
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000075 skb->protocol = vlan->vlan_proto;
76 type = ntohs(vlan->vlan_proto);
Patrick McHardy1349fe92008-07-14 22:51:19 -070077 vhdrlen = VLAN_HLEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 }
79
80 /* Before delegating work to the lower layer, enter our MAC-address */
81 if (saddr == NULL)
82 saddr = dev->dev_addr;
83
Patrick McHardy1349fe92008-07-14 22:51:19 -070084 /* Now make the underlying real hard header */
Wang Sheng-Hui0c0667a2013-08-03 16:54:50 +080085 dev = vlan->real_dev;
Patrick McHardy1349fe92008-07-14 22:51:19 -070086 rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
87 if (rc > 0)
88 rc += vhdrlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 return rc;
90}
91
Amerigo Wang6eacf8a2012-08-10 01:24:48 +000092static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
93{
94#ifdef CONFIG_NET_POLL_CONTROLLER
95 if (vlan->netpoll)
96 netpoll_send_skb(vlan->netpoll, skb);
97#else
98 BUG();
99#endif
100 return NETDEV_TX_OK;
101}
102
Stephen Hemminger6fef4c02009-08-31 19:50:41 +0000103static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
104 struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105{
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000106 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
Eric Dumazet1a123a32009-09-03 00:39:16 +0000108 unsigned int len;
109 int ret;
David S. Miller55b01e82008-02-23 20:09:11 -0800110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 /* Handle non-VLAN frames if they are sent to us, for example by DHCP.
112 *
113 * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
114 * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
115 */
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000116 if (veth->h_vlan_proto != vlan->vlan_proto ||
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000117 vlan->flags & VLAN_FLAG_REORDER_HDR) {
Patrick McHardy9bb85822008-07-08 03:24:44 -0700118 u16 vlan_tci;
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000119 vlan_tci = vlan->vlan_id;
David S. Millere267cb92013-11-11 00:42:07 -0500120 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
Jiri Pirkob960a0ac2014-11-19 14:04:56 +0100121 __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 }
123
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000124 skb->dev = vlan->real_dev;
Eric Dumazet1a123a32009-09-03 00:39:16 +0000125 len = skb->len;
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000126 if (unlikely(netpoll_tx_running(dev)))
127 return vlan_netpoll_send_skb(vlan, skb);
128
Eric Dumazet1a123a32009-09-03 00:39:16 +0000129 ret = dev_queue_xmit(skb);
130
Eric Dumazet2d6c9ff2010-05-10 04:51:02 +0000131 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
Eric Dumazet4af429d2010-11-10 23:42:00 +0000132 struct vlan_pcpu_stats *stats;
133
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000134 stats = this_cpu_ptr(vlan->vlan_pcpu_stats);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000135 u64_stats_update_begin(&stats->syncp);
136 stats->tx_packets++;
137 stats->tx_bytes += len;
Wei Yongjun307f73d2011-05-31 22:53:19 +0000138 u64_stats_update_end(&stats->syncp);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000139 } else {
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000140 this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000141 }
Eric Dumazet1a123a32009-09-03 00:39:16 +0000142
Patrick McHardycbbef5e2009-11-10 06:14:24 +0000143 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144}
145
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800146static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147{
148 /* TODO: gotta make sure the underlying layer can handle it,
149 * maybe an IFF_VLAN_CAPABLE flag for devices?
150 */
Jiri Pirko7da82c02011-12-08 04:11:15 +0000151 if (vlan_dev_priv(dev)->real_dev->mtu < new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 return -ERANGE;
153
154 dev->mtu = new_mtu;
155
156 return 0;
157}
158
Patrick McHardyc17d8872007-06-13 12:05:22 -0700159void vlan_dev_set_ingress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700160 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000162 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb020cb42007-06-13 12:07:22 -0700163
164 if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
165 vlan->nr_ingress_mappings--;
166 else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
167 vlan->nr_ingress_mappings++;
168
169 vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170}
171
Patrick McHardyc17d8872007-06-13 12:05:22 -0700172int vlan_dev_set_egress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700173 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000175 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 struct vlan_priority_tci_mapping *mp = NULL;
177 struct vlan_priority_tci_mapping *np;
Eric Dumazet05423b22009-10-26 18:40:35 -0700178 u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900179
Patrick McHardyc17d8872007-06-13 12:05:22 -0700180 /* See if a priority mapping exists.. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700181 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700182 while (mp) {
183 if (mp->priority == skb_prio) {
Patrick McHardyb020cb42007-06-13 12:07:22 -0700184 if (mp->vlan_qos && !vlan_qos)
185 vlan->nr_egress_mappings--;
186 else if (!mp->vlan_qos && vlan_qos)
187 vlan->nr_egress_mappings++;
188 mp->vlan_qos = vlan_qos;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700189 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700191 mp = mp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700193
194 /* Create a new mapping then. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700195 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700196 np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
197 if (!np)
198 return -ENOBUFS;
199
200 np->next = mp;
201 np->priority = skb_prio;
Patrick McHardyb020cb42007-06-13 12:07:22 -0700202 np->vlan_qos = vlan_qos;
Eric Dumazet3e3aac42013-07-18 09:35:10 -0700203 /* Before inserting this element in hash table, make sure all its fields
204 * are committed to memory.
David S. Millere267cb92013-11-11 00:42:07 -0500205 * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask()
Eric Dumazet3e3aac42013-07-18 09:35:10 -0700206 */
207 smp_wmb();
Patrick McHardyb020cb42007-06-13 12:07:22 -0700208 vlan->egress_priority_map[skb_prio & 0xF] = np;
209 if (vlan_qos)
210 vlan->nr_egress_mappings++;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700211 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212}
213
Patrick McHardya4bf3af42007-06-13 12:07:37 -0700214/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700215int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000217 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700218 u32 old_flags = vlan->flags;
219
Patrick McHardy5e756592009-11-25 07:54:54 +0000220 if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
David Ward86fbe9b2013-02-08 17:17:07 +0000221 VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP))
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700222 return -EINVAL;
223
224 vlan->flags = (old_flags & ~mask) | (flags & mask);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700225
226 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
227 if (vlan->flags & VLAN_FLAG_GVRP)
228 vlan_gvrp_request_join(dev);
229 else
230 vlan_gvrp_request_leave(dev);
231 }
David Ward86fbe9b2013-02-08 17:17:07 +0000232
233 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) {
234 if (vlan->flags & VLAN_FLAG_MVRP)
235 vlan_mvrp_request_join(dev);
236 else
237 vlan_mvrp_request_leave(dev);
238 }
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700239 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240}
241
Patrick McHardyc17d8872007-06-13 12:05:22 -0700242void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000244 strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245}
246
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800247static int vlan_dev_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000249 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700250 struct net_device *real_dev = vlan->real_dev;
251 int err;
252
Patrick McHardy5e756592009-11-25 07:54:54 +0000253 if (!(real_dev->flags & IFF_UP) &&
254 !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 return -ENETDOWN;
256
Joe Perches53a2b3a2012-05-08 18:56:47 +0000257 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000258 err = dev_uc_add(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700259 if (err < 0)
Wang Chen89146502008-07-14 20:59:03 -0700260 goto out;
Patrick McHardy8c979c22007-07-11 19:45:24 -0700261 }
Patrick McHardy8c979c22007-07-11 19:45:24 -0700262
Wang Chen89146502008-07-14 20:59:03 -0700263 if (dev->flags & IFF_ALLMULTI) {
264 err = dev_set_allmulti(real_dev, 1);
265 if (err < 0)
266 goto del_unicast;
267 }
268 if (dev->flags & IFF_PROMISC) {
269 err = dev_set_promiscuity(real_dev, 1);
270 if (err < 0)
271 goto clear_allmulti;
272 }
273
Joe Perches07fc67b2014-01-20 09:52:14 -0800274 ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700275
Patrick McHardy70c03b42008-07-05 21:26:57 -0700276 if (vlan->flags & VLAN_FLAG_GVRP)
277 vlan_gvrp_request_join(dev);
278
David Ward86fbe9b2013-02-08 17:17:07 +0000279 if (vlan->flags & VLAN_FLAG_MVRP)
280 vlan_mvrp_request_join(dev);
281
Phil Oester0ac820e2010-08-17 18:45:08 +0000282 if (netif_carrier_ok(real_dev))
283 netif_carrier_on(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 return 0;
Wang Chen89146502008-07-14 20:59:03 -0700285
286clear_allmulti:
287 if (dev->flags & IFF_ALLMULTI)
288 dev_set_allmulti(real_dev, -1);
289del_unicast:
Joe Perches53a2b3a2012-05-08 18:56:47 +0000290 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000291 dev_uc_del(real_dev, dev->dev_addr);
Wang Chen89146502008-07-14 20:59:03 -0700292out:
Jay Vosburghadc667e2009-04-25 18:03:35 -0700293 netif_carrier_off(dev);
Wang Chen89146502008-07-14 20:59:03 -0700294 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295}
296
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800297static int vlan_dev_stop(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000299 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700300 struct net_device *real_dev = vlan->real_dev;
301
Patrick McHardy56addd62007-07-14 18:53:28 -0700302 dev_mc_unsync(real_dev, dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000303 dev_uc_unsync(real_dev, dev);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700304 if (dev->flags & IFF_ALLMULTI)
305 dev_set_allmulti(real_dev, -1);
306 if (dev->flags & IFF_PROMISC)
307 dev_set_promiscuity(real_dev, -1);
308
Joe Perches53a2b3a2012-05-08 18:56:47 +0000309 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000310 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700311
Jay Vosburghadc667e2009-04-25 18:03:35 -0700312 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 return 0;
314}
315
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800316static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
Patrick McHardy39aaac12007-11-10 21:52:35 -0800317{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000318 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy39aaac12007-11-10 21:52:35 -0800319 struct sockaddr *addr = p;
320 int err;
321
322 if (!is_valid_ether_addr(addr->sa_data))
323 return -EADDRNOTAVAIL;
324
325 if (!(dev->flags & IFF_UP))
326 goto out;
327
Joe Perches53a2b3a2012-05-08 18:56:47 +0000328 if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000329 err = dev_uc_add(real_dev, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800330 if (err < 0)
331 return err;
332 }
333
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);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800336
337out:
Joe Perches07fc67b2014-01-20 09:52:14 -0800338 ether_addr_copy(dev->dev_addr, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800339 return 0;
340}
341
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800342static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000344 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Stephen Hemminger656299f2008-11-19 21:53:47 -0800345 const struct net_device_ops *ops = real_dev->netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 struct ifreq ifrr;
347 int err = -EOPNOTSUPP;
348
349 strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
350 ifrr.ifr_ifru = ifr->ifr_ifru;
351
Patrick McHardy2029cc22008-01-21 00:26:41 -0800352 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 case SIOCGMIIPHY:
354 case SIOCGMIIREG:
355 case SIOCSMIIREG:
Stefan Sørensena6111d32014-06-27 11:59:11 +0200356 case SIOCSHWTSTAMP:
357 case SIOCGHWTSTAMP:
Stephen Hemminger656299f2008-11-19 21:53:47 -0800358 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
359 err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 }
362
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900363 if (!err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 ifr->ifr_ifru = ifrr.ifr_ifru;
365
366 return err;
367}
368
Frank Blaschkacc883d12009-01-08 10:50:20 -0800369static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
370{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000371 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Frank Blaschkacc883d12009-01-08 10:50:20 -0800372 const struct net_device_ops *ops = real_dev->netdev_ops;
373 int err = 0;
374
375 if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
David S. Miller9d40bbd2009-03-04 23:46:25 -0800376 err = ops->ndo_neigh_setup(real_dev, pa);
Frank Blaschkacc883d12009-01-08 10:50:20 -0800377
378 return err;
379}
380
Amerigo Wangf4d53922012-10-29 17:22:28 +0000381#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000382static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
383 struct scatterlist *sgl, unsigned int sgc)
384{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000385 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000386 const struct net_device_ops *ops = real_dev->netdev_ops;
387 int rc = 0;
388
389 if (ops->ndo_fcoe_ddp_setup)
390 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
391
392 return rc;
393}
394
395static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
396{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000397 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000398 const struct net_device_ops *ops = real_dev->netdev_ops;
399 int len = 0;
400
401 if (ops->ndo_fcoe_ddp_done)
402 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
403
404 return len;
405}
Yi Zou0af46d92009-08-31 12:31:55 +0000406
407static int vlan_dev_fcoe_enable(struct net_device *dev)
408{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000409 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000410 const struct net_device_ops *ops = real_dev->netdev_ops;
411 int rc = -EINVAL;
412
413 if (ops->ndo_fcoe_enable)
414 rc = ops->ndo_fcoe_enable(real_dev);
415 return rc;
416}
417
418static int vlan_dev_fcoe_disable(struct net_device *dev)
419{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000420 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000421 const struct net_device_ops *ops = real_dev->netdev_ops;
422 int rc = -EINVAL;
423
424 if (ops->ndo_fcoe_disable)
425 rc = ops->ndo_fcoe_disable(real_dev);
426 return rc;
427}
Yi Zoud6534792009-10-28 18:25:16 +0000428
429static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
430{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000431 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zoud6534792009-10-28 18:25:16 +0000432 const struct net_device_ops *ops = real_dev->netdev_ops;
433 int rc = -EINVAL;
434
435 if (ops->ndo_fcoe_get_wwn)
436 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
437 return rc;
438}
Yi Zou4ea09c92011-02-01 07:22:11 +0000439
440static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
441 struct scatterlist *sgl, unsigned int sgc)
442{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000443 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou4ea09c92011-02-01 07:22:11 +0000444 const struct net_device_ops *ops = real_dev->netdev_ops;
445 int rc = 0;
446
447 if (ops->ndo_fcoe_ddp_target)
448 rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
449
450 return rc;
451}
Vasu Devb85daa52009-08-14 12:41:07 +0000452#endif
453
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800454static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700455{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000456 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700457
Matthijs Kooijmandeede2f2011-10-31 04:53:13 +0000458 if (dev->flags & IFF_UP) {
459 if (change & IFF_ALLMULTI)
460 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
461 if (change & IFF_PROMISC)
462 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
463 }
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700464}
465
Chris Leeche83a2ea2008-01-31 16:53:23 -0800466static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467{
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400468 dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
469 dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470}
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800471
472/*
473 * vlan network devices have devices nesting below it, and are a special
474 * "super class" of normal network devices; split their locks off into a
475 * separate class since they always nest.
476 */
477static struct lock_class_key vlan_netdev_xmit_lock_key;
David S. Millercf508b12008-07-22 14:16:42 -0700478static struct lock_class_key vlan_netdev_addr_lock_key;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800479
David S. Millere8a04642008-07-17 00:34:19 -0700480static void vlan_dev_set_lockdep_one(struct net_device *dev,
481 struct netdev_queue *txq,
482 void *_subclass)
David S. Millerc773e842008-07-08 23:13:53 -0700483{
484 lockdep_set_class_and_subclass(&txq->_xmit_lock,
David S. Millere8a04642008-07-17 00:34:19 -0700485 &vlan_netdev_xmit_lock_key,
486 *(int *)_subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700487}
488
489static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
490{
David S. Millercf508b12008-07-22 14:16:42 -0700491 lockdep_set_class_and_subclass(&dev->addr_list_lock,
492 &vlan_netdev_addr_lock_key,
493 subclass);
David S. Millere8a04642008-07-17 00:34:19 -0700494 netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700495}
496
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400497static int vlan_dev_get_lock_subclass(struct net_device *dev)
498{
499 return vlan_dev_priv(dev)->nest_level;
500}
501
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800502static const struct header_ops vlan_header_ops = {
503 .create = vlan_dev_hard_header,
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800504 .parse = eth_header_parse,
505};
506
David S. Miller22053692013-12-31 16:23:35 -0500507static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev,
508 unsigned short type,
509 const void *daddr, const void *saddr,
510 unsigned int len)
511{
512 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
513 struct net_device *real_dev = vlan->real_dev;
514
Peter Boströmdd387432014-03-10 16:17:15 +0100515 if (saddr == NULL)
516 saddr = dev->dev_addr;
517
David S. Miller22053692013-12-31 16:23:35 -0500518 return dev_hard_header(skb, real_dev, type, daddr, saddr, len);
519}
520
521static const struct header_ops vlan_passthru_header_ops = {
522 .create = vlan_passthru_hard_header,
David S. Miller22053692013-12-31 16:23:35 -0500523 .parse = eth_header_parse,
524};
525
Doug Goldsteine949b092012-10-21 19:53:57 +0000526static struct device_type vlan_type = {
527 .name = "vlan",
528};
529
Eric Dumazet213b15c2010-11-11 09:42:45 +0000530static const struct net_device_ops vlan_netdev_ops;
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800531
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800532static int vlan_dev_init(struct net_device *dev)
533{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000534 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800535
Jay Vosburghadc667e2009-04-25 18:03:35 -0700536 netif_carrier_off(dev);
537
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800538 /* IFF_BROADCAST|IFF_MULTICAST; ??? */
John Fastabend194dbcc2010-05-12 21:31:06 +0000539 dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
540 IFF_MASTER | IFF_SLAVE);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800541 dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
542 (1<<__LINK_STATE_DORMANT))) |
543 (1<<__LINK_STATE_PRESENT);
544
Michał Mirosław62f2a3a2011-07-13 14:10:29 +0000545 dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG |
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900546 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
Michał Mirosław62f2a3a2011-07-13 14:10:29 +0000547 NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM |
548 NETIF_F_ALL_FCOE;
549
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900550 dev->features |= real_dev->vlan_features | NETIF_F_LLTX |
551 NETIF_F_GSO_SOFTWARE;
Alexander Duyck1ae4be22008-09-11 20:17:05 -0700552 dev->gso_max_size = real_dev->gso_max_size;
Vlad Yasevich2adb9562014-03-27 22:14:49 -0400553 if (dev->features & NETIF_F_VLAN_FEATURES)
554 netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
555
Toshiaki Makita8d463502015-03-27 14:31:10 +0900556 dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE;
Patrick McHardy5fb13572008-05-20 14:54:50 -0700557
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800558 /* ipv6 shared card related stuff */
559 dev->dev_id = real_dev->dev_id;
560
561 if (is_zero_ether_addr(dev->dev_addr))
Bjørn Mork6b93f4a2013-08-30 18:08:45 +0200562 eth_hw_addr_inherit(dev, real_dev);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800563 if (is_zero_ether_addr(dev->broadcast))
564 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
565
Amerigo Wangf4d53922012-10-29 17:22:28 +0000566#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000567 dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
568#endif
569
Eric Dumazetd870bfb2011-03-18 00:27:27 +0000570 dev->needed_headroom = real_dev->needed_headroom;
Vlad Yasevichfc0d48b2014-03-26 11:47:56 -0400571 if (vlan_hw_offload_capable(real_dev->features,
572 vlan_dev_priv(dev)->vlan_proto)) {
David S. Miller22053692013-12-31 16:23:35 -0500573 dev->header_ops = &vlan_passthru_header_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800574 dev->hard_header_len = real_dev->hard_header_len;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800575 } else {
576 dev->header_ops = &vlan_header_ops;
577 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800578 }
579
Eric Dumazet213b15c2010-11-11 09:42:45 +0000580 dev->netdev_ops = &vlan_netdev_ops;
John Fastabend636e19a2010-10-30 14:22:42 +0000581
Doug Goldsteine949b092012-10-21 19:53:57 +0000582 SET_NETDEV_DEVTYPE(dev, &vlan_type);
583
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400584 vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev));
Eric Dumazet97932412009-11-17 04:53:09 +0000585
WANG Cong1c213bd2014-02-13 11:46:28 -0800586 vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
Jiri Pirko7da82c02011-12-08 04:11:15 +0000587 if (!vlan_dev_priv(dev)->vlan_pcpu_stats)
Eric Dumazet97932412009-11-17 04:53:09 +0000588 return -ENOMEM;
589
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800590 return 0;
591}
592
Pavel Emelyanov23556322008-04-04 12:45:12 -0700593static void vlan_dev_uninit(struct net_device *dev)
594{
595 struct vlan_priority_tci_mapping *pm;
Jiri Pirko7da82c02011-12-08 04:11:15 +0000596 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Pavel Emelyanov23556322008-04-04 12:45:12 -0700597 int i;
598
599 for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
600 while ((pm = vlan->egress_priority_map[i]) != NULL) {
601 vlan->egress_priority_map[i] = pm->next;
602 kfree(pm);
603 }
604 }
605}
606
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000607static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
608 netdev_features_t features)
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700609{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000610 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Bjørn Morkb29d3142013-05-01 23:06:42 +0000611 netdev_features_t old_features = features;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700612
Michal Kubečekda081432014-05-20 08:29:25 +0200613 features = netdev_intersect_features(features, real_dev->vlan_features);
Michał Mirosławbc5787c62011-11-15 15:29:55 +0000614 features |= NETIF_F_RXCSUM;
Michal Kubečekda081432014-05-20 08:29:25 +0200615 features = netdev_intersect_features(features, real_dev->features);
Shan Wei712ae512011-07-05 20:43:12 -0700616
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900617 features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
Michał Mirosławf0a619c2011-05-06 07:56:29 +0000618 features |= NETIF_F_LLTX;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700619
620 return features;
621}
622
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700623static int vlan_ethtool_get_settings(struct net_device *dev,
624 struct ethtool_cmd *cmd)
625{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000626 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Jiri Pirko4bc71cb2011-09-03 03:34:30 +0000627
628 return __ethtool_get_settings(vlan->real_dev, cmd);
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700629}
630
631static void vlan_ethtool_get_drvinfo(struct net_device *dev,
632 struct ethtool_drvinfo *info)
633{
Jiri Pirko7826d432013-01-06 00:44:26 +0000634 strlcpy(info->driver, vlan_fullname, sizeof(info->driver));
635 strlcpy(info->version, vlan_version, sizeof(info->version));
636 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700637}
638
Richard Cochran37dd9252014-11-21 14:16:20 +0100639static int vlan_ethtool_get_ts_info(struct net_device *dev,
640 struct ethtool_ts_info *info)
641{
642 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
643 const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops;
644
645 if (ops->get_ts_info) {
646 return ops->get_ts_info(vlan->real_dev, info);
647 } else {
648 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
649 SOF_TIMESTAMPING_SOFTWARE;
650 info->phc_index = -1;
651 }
652
653 return 0;
654}
655
Eric Dumazet28172732010-07-07 14:58:56 -0700656static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
Eric Dumazet97932412009-11-17 04:53:09 +0000657{
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800658 struct vlan_pcpu_stats *p;
659 u32 rx_errors = 0, tx_dropped = 0;
660 int i;
Eric Dumazet97932412009-11-17 04:53:09 +0000661
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800662 for_each_possible_cpu(i) {
663 u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
664 unsigned int start;
Eric Dumazet97932412009-11-17 04:53:09 +0000665
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800666 p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
667 do {
668 start = u64_stats_fetch_begin_irq(&p->syncp);
669 rxpackets = p->rx_packets;
670 rxbytes = p->rx_bytes;
671 rxmulticast = p->rx_multicast;
672 txpackets = p->tx_packets;
673 txbytes = p->tx_bytes;
674 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000675
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800676 stats->rx_packets += rxpackets;
677 stats->rx_bytes += rxbytes;
678 stats->multicast += rxmulticast;
679 stats->tx_packets += txpackets;
680 stats->tx_bytes += txbytes;
681 /* rx_errors & tx_dropped are u32 */
682 rx_errors += p->rx_errors;
683 tx_dropped += p->tx_dropped;
Eric Dumazet97932412009-11-17 04:53:09 +0000684 }
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800685 stats->rx_errors = rx_errors;
686 stats->tx_dropped = tx_dropped;
687
Eric Dumazet97932412009-11-17 04:53:09 +0000688 return stats;
689}
690
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000691#ifdef CONFIG_NET_POLL_CONTROLLER
Eric Dumazetde93cb22011-12-13 20:57:54 +0000692static void vlan_dev_poll_controller(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000693{
694 return;
695}
696
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700697static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000698{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000699 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
700 struct net_device *real_dev = vlan->real_dev;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000701 struct netpoll *netpoll;
702 int err = 0;
703
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700704 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000705 err = -ENOMEM;
706 if (!netpoll)
707 goto out;
708
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700709 err = __netpoll_setup(netpoll, real_dev);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000710 if (err) {
711 kfree(netpoll);
712 goto out;
713 }
714
Amerigo Wangf3da3892012-08-10 01:24:47 +0000715 vlan->netpoll = netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000716
717out:
718 return err;
719}
720
Eric Dumazetde93cb22011-12-13 20:57:54 +0000721static void vlan_dev_netpoll_cleanup(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000722{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000723 struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
724 struct netpoll *netpoll = vlan->netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000725
726 if (!netpoll)
727 return;
728
Amerigo Wangf3da3892012-08-10 01:24:47 +0000729 vlan->netpoll = NULL;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000730
Neil Horman2cde6ac2013-02-11 10:25:30 +0000731 __netpoll_free_async(netpoll);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000732}
733#endif /* CONFIG_NET_POLL_CONTROLLER */
734
Nicolas Dichtel2dbf6b52015-04-02 17:07:04 +0200735static int vlan_dev_get_iflink(const struct net_device *dev)
736{
737 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
738
739 return real_dev->ifindex;
740}
741
Patrick McHardy75b88462008-07-08 03:22:42 -0700742static const struct ethtool_ops vlan_ethtool_ops = {
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700743 .get_settings = vlan_ethtool_get_settings,
744 .get_drvinfo = vlan_ethtool_get_drvinfo,
Patrick McHardy75b88462008-07-08 03:22:42 -0700745 .get_link = ethtool_op_get_link,
Richard Cochran37dd9252014-11-21 14:16:20 +0100746 .get_ts_info = vlan_ethtool_get_ts_info,
Patrick McHardy75b88462008-07-08 03:22:42 -0700747};
748
Stephen Hemminger656299f2008-11-19 21:53:47 -0800749static const struct net_device_ops vlan_netdev_ops = {
750 .ndo_change_mtu = vlan_dev_change_mtu,
751 .ndo_init = vlan_dev_init,
752 .ndo_uninit = vlan_dev_uninit,
753 .ndo_open = vlan_dev_open,
754 .ndo_stop = vlan_dev_stop,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800755 .ndo_start_xmit = vlan_dev_hard_start_xmit,
756 .ndo_validate_addr = eth_validate_addr,
757 .ndo_set_mac_address = vlan_dev_set_mac_address,
758 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800759 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
760 .ndo_do_ioctl = vlan_dev_ioctl,
Frank Blaschkacc883d12009-01-08 10:50:20 -0800761 .ndo_neigh_setup = vlan_dev_neigh_setup,
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000762 .ndo_get_stats64 = vlan_dev_get_stats64,
Amerigo Wangf4d53922012-10-29 17:22:28 +0000763#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000764 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
765 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
Yi Zou0af46d92009-08-31 12:31:55 +0000766 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
767 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
Yi Zoud6534792009-10-28 18:25:16 +0000768 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
Yi Zou4ea09c92011-02-01 07:22:11 +0000769 .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
Vasu Devb85daa52009-08-14 12:41:07 +0000770#endif
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000771#ifdef CONFIG_NET_POLL_CONTROLLER
772 .ndo_poll_controller = vlan_dev_poll_controller,
773 .ndo_netpoll_setup = vlan_dev_netpoll_setup,
774 .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup,
775#endif
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700776 .ndo_fix_features = vlan_dev_fix_features,
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400777 .ndo_get_lock_subclass = vlan_dev_get_lock_subclass,
Nicolas Dichtel2dbf6b52015-04-02 17:07:04 +0200778 .ndo_get_iflink = vlan_dev_get_iflink,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800779};
780
Eric Dumazeta48e5fa2014-07-02 02:25:15 -0700781static void vlan_dev_free(struct net_device *dev)
782{
783 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
784
785 free_percpu(vlan->vlan_pcpu_stats);
786 vlan->vlan_pcpu_stats = NULL;
787 free_netdev(dev);
788}
789
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800790void vlan_setup(struct net_device *dev)
791{
792 ether_setup(dev);
793
Phil Sutter2e659c02015-08-18 10:30:36 +0200794 dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE;
Eric Dumazet02875872014-10-05 18:38:35 -0700795 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
796 netif_keep_dst(dev);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800797
Stephen Hemminger656299f2008-11-19 21:53:47 -0800798 dev->netdev_ops = &vlan_netdev_ops;
Eric Dumazeta48e5fa2014-07-02 02:25:15 -0700799 dev->destructor = vlan_dev_free;
Patrick McHardy75b88462008-07-08 03:22:42 -0700800 dev->ethtool_ops = &vlan_ethtool_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800801
Joe Perches423049a2015-03-02 19:54:52 -0800802 eth_zero_addr(dev->broadcast);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800803}