blob: ad5e2fd1012c4c1fdfedf010055acfae003646e4 [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>
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>
Ido Schimmel9d547832015-12-15 16:03:34 +010033#include <net/switchdev.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35#include "vlan.h"
36#include "vlanproc.h"
37#include <linux/if_vlan.h>
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +000038#include <linux/netpoll.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
40/*
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090041 * Create the VLAN header for an arbitrary protocol layer
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 *
43 * saddr=NULL means use device source address
44 * daddr=NULL means leave destination address (eg unresolved arp)
45 *
46 * This is called when the SKB is moving down the stack towards the
47 * physical devices.
48 */
Patrick McHardyef3eb3e2008-01-21 00:22:11 -080049static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
50 unsigned short type,
51 const void *daddr, const void *saddr,
52 unsigned int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -070053{
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000054 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 struct vlan_hdr *vhdr;
Patrick McHardy1349fe92008-07-14 22:51:19 -070056 unsigned int vhdrlen = 0;
Patrick McHardy9bb85822008-07-08 03:24:44 -070057 u16 vlan_tci = 0;
Patrick McHardy1349fe92008-07-14 22:51:19 -070058 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
Wang Sheng-Hui0c0667a2013-08-03 16:54:50 +080060 if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
62
Wang Sheng-Hui0c0667a2013-08-03 16:54:50 +080063 vlan_tci = vlan->vlan_id;
David S. Millere267cb92013-11-11 00:42:07 -050064 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
Patrick McHardy9bb85822008-07-08 03:24:44 -070065 vhdr->h_vlan_TCI = htons(vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
67 /*
Octavian Purdilabf9ae532009-12-26 11:50:59 +000068 * Set the protocol type. For a packet of type ETH_P_802_3/2 we
69 * put the length in here instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 */
Octavian Purdilabf9ae532009-12-26 11:50:59 +000071 if (type != ETH_P_802_3 && type != ETH_P_802_2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 vhdr->h_vlan_encapsulated_proto = htons(type);
Patrick McHardy2029cc22008-01-21 00:26:41 -080073 else
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 vhdr->h_vlan_encapsulated_proto = htons(len);
Jerome Borsboom279e1722007-04-13 16:12:47 -070075
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +000076 skb->protocol = vlan->vlan_proto;
77 type = ntohs(vlan->vlan_proto);
Patrick McHardy1349fe92008-07-14 22:51:19 -070078 vhdrlen = VLAN_HLEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 }
80
81 /* Before delegating work to the lower layer, enter our MAC-address */
82 if (saddr == NULL)
83 saddr = dev->dev_addr;
84
Patrick McHardy1349fe92008-07-14 22:51:19 -070085 /* Now make the underlying real hard header */
Wang Sheng-Hui0c0667a2013-08-03 16:54:50 +080086 dev = vlan->real_dev;
Patrick McHardy1349fe92008-07-14 22:51:19 -070087 rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
88 if (rc > 0)
89 rc += vhdrlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 return rc;
91}
92
Amerigo Wang6eacf8a2012-08-10 01:24:48 +000093static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
94{
95#ifdef CONFIG_NET_POLL_CONTROLLER
96 if (vlan->netpoll)
97 netpoll_send_skb(vlan->netpoll, skb);
98#else
99 BUG();
100#endif
101 return NETDEV_TX_OK;
102}
103
Stephen Hemminger6fef4c02009-08-31 19:50:41 +0000104static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
105 struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106{
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000107 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
Eric Dumazet1a123a32009-09-03 00:39:16 +0000109 unsigned int len;
110 int ret;
David S. Miller55b01e82008-02-23 20:09:11 -0800111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 /* Handle non-VLAN frames if they are sent to us, for example by DHCP.
113 *
114 * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
115 * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
116 */
Patrick McHardy1fd9b1f2013-04-19 02:04:29 +0000117 if (veth->h_vlan_proto != vlan->vlan_proto ||
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000118 vlan->flags & VLAN_FLAG_REORDER_HDR) {
Patrick McHardy9bb85822008-07-08 03:24:44 -0700119 u16 vlan_tci;
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000120 vlan_tci = vlan->vlan_id;
David S. Millere267cb92013-11-11 00:42:07 -0500121 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
Jiri Pirkob960a0ac2014-11-19 14:04:56 +0100122 __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 }
124
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000125 skb->dev = vlan->real_dev;
Eric Dumazet1a123a32009-09-03 00:39:16 +0000126 len = skb->len;
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000127 if (unlikely(netpoll_tx_running(dev)))
128 return vlan_netpoll_send_skb(vlan, skb);
129
Eric Dumazet1a123a32009-09-03 00:39:16 +0000130 ret = dev_queue_xmit(skb);
131
Eric Dumazet2d6c9ff2010-05-10 04:51:02 +0000132 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
Eric Dumazet4af429d2010-11-10 23:42:00 +0000133 struct vlan_pcpu_stats *stats;
134
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000135 stats = this_cpu_ptr(vlan->vlan_pcpu_stats);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000136 u64_stats_update_begin(&stats->syncp);
137 stats->tx_packets++;
138 stats->tx_bytes += len;
Wei Yongjun307f73d2011-05-31 22:53:19 +0000139 u64_stats_update_end(&stats->syncp);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000140 } else {
Amerigo Wang6eacf8a2012-08-10 01:24:48 +0000141 this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
Eric Dumazet4af429d2010-11-10 23:42:00 +0000142 }
Eric Dumazet1a123a32009-09-03 00:39:16 +0000143
Patrick McHardycbbef5e2009-11-10 06:14:24 +0000144 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145}
146
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800147static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148{
149 /* TODO: gotta make sure the underlying layer can handle it,
150 * maybe an IFF_VLAN_CAPABLE flag for devices?
151 */
Jiri Pirko7da82c02011-12-08 04:11:15 +0000152 if (vlan_dev_priv(dev)->real_dev->mtu < new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 return -ERANGE;
154
155 dev->mtu = new_mtu;
156
157 return 0;
158}
159
Patrick McHardyc17d8872007-06-13 12:05:22 -0700160void vlan_dev_set_ingress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700161 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000163 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb020cb42007-06-13 12:07:22 -0700164
165 if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
166 vlan->nr_ingress_mappings--;
167 else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
168 vlan->nr_ingress_mappings++;
169
170 vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171}
172
Patrick McHardyc17d8872007-06-13 12:05:22 -0700173int vlan_dev_set_egress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700174 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000176 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 struct vlan_priority_tci_mapping *mp = NULL;
178 struct vlan_priority_tci_mapping *np;
Eric Dumazet05423b22009-10-26 18:40:35 -0700179 u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900180
Patrick McHardyc17d8872007-06-13 12:05:22 -0700181 /* See if a priority mapping exists.. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700182 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700183 while (mp) {
184 if (mp->priority == skb_prio) {
Patrick McHardyb020cb42007-06-13 12:07:22 -0700185 if (mp->vlan_qos && !vlan_qos)
186 vlan->nr_egress_mappings--;
187 else if (!mp->vlan_qos && vlan_qos)
188 vlan->nr_egress_mappings++;
189 mp->vlan_qos = vlan_qos;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700190 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700192 mp = mp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700194
195 /* Create a new mapping then. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700196 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700197 np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
198 if (!np)
199 return -ENOBUFS;
200
201 np->next = mp;
202 np->priority = skb_prio;
Patrick McHardyb020cb42007-06-13 12:07:22 -0700203 np->vlan_qos = vlan_qos;
Eric Dumazet3e3aac42013-07-18 09:35:10 -0700204 /* Before inserting this element in hash table, make sure all its fields
205 * are committed to memory.
David S. Millere267cb92013-11-11 00:42:07 -0500206 * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask()
Eric Dumazet3e3aac42013-07-18 09:35:10 -0700207 */
208 smp_wmb();
Patrick McHardyb020cb42007-06-13 12:07:22 -0700209 vlan->egress_priority_map[skb_prio & 0xF] = np;
210 if (vlan_qos)
211 vlan->nr_egress_mappings++;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700212 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213}
214
Patrick McHardya4bf3af42007-06-13 12:07:37 -0700215/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700216int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000218 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700219 u32 old_flags = vlan->flags;
220
Patrick McHardy5e756592009-11-25 07:54:54 +0000221 if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
David Ward86fbe9b2013-02-08 17:17:07 +0000222 VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP))
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700223 return -EINVAL;
224
225 vlan->flags = (old_flags & ~mask) | (flags & mask);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700226
227 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
228 if (vlan->flags & VLAN_FLAG_GVRP)
229 vlan_gvrp_request_join(dev);
230 else
231 vlan_gvrp_request_leave(dev);
232 }
David Ward86fbe9b2013-02-08 17:17:07 +0000233
234 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) {
235 if (vlan->flags & VLAN_FLAG_MVRP)
236 vlan_mvrp_request_join(dev);
237 else
238 vlan_mvrp_request_leave(dev);
239 }
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700240 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241}
242
Patrick McHardyc17d8872007-06-13 12:05:22 -0700243void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000245 strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246}
247
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800248static int vlan_dev_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000250 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700251 struct net_device *real_dev = vlan->real_dev;
252 int err;
253
Patrick McHardy5e756592009-11-25 07:54:54 +0000254 if (!(real_dev->flags & IFF_UP) &&
255 !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 return -ENETDOWN;
257
Joe Perches53a2b3a2012-05-08 18:56:47 +0000258 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000259 err = dev_uc_add(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700260 if (err < 0)
Wang Chen89146502008-07-14 20:59:03 -0700261 goto out;
Patrick McHardy8c979c22007-07-11 19:45:24 -0700262 }
Patrick McHardy8c979c22007-07-11 19:45:24 -0700263
Wang Chen89146502008-07-14 20:59:03 -0700264 if (dev->flags & IFF_ALLMULTI) {
265 err = dev_set_allmulti(real_dev, 1);
266 if (err < 0)
267 goto del_unicast;
268 }
269 if (dev->flags & IFF_PROMISC) {
270 err = dev_set_promiscuity(real_dev, 1);
271 if (err < 0)
272 goto clear_allmulti;
273 }
274
Joe Perches07fc67b2014-01-20 09:52:14 -0800275 ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700276
Patrick McHardy70c03b42008-07-05 21:26:57 -0700277 if (vlan->flags & VLAN_FLAG_GVRP)
278 vlan_gvrp_request_join(dev);
279
David Ward86fbe9b2013-02-08 17:17:07 +0000280 if (vlan->flags & VLAN_FLAG_MVRP)
281 vlan_mvrp_request_join(dev);
282
Phil Oester0ac820e2010-08-17 18:45:08 +0000283 if (netif_carrier_ok(real_dev))
284 netif_carrier_on(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 return 0;
Wang Chen89146502008-07-14 20:59:03 -0700286
287clear_allmulti:
288 if (dev->flags & IFF_ALLMULTI)
289 dev_set_allmulti(real_dev, -1);
290del_unicast:
Joe Perches53a2b3a2012-05-08 18:56:47 +0000291 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000292 dev_uc_del(real_dev, dev->dev_addr);
Wang Chen89146502008-07-14 20:59:03 -0700293out:
Jay Vosburghadc667e2009-04-25 18:03:35 -0700294 netif_carrier_off(dev);
Wang Chen89146502008-07-14 20:59:03 -0700295 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296}
297
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800298static int vlan_dev_stop(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000300 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700301 struct net_device *real_dev = vlan->real_dev;
302
Patrick McHardy56addd62007-07-14 18:53:28 -0700303 dev_mc_unsync(real_dev, dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000304 dev_uc_unsync(real_dev, dev);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700305 if (dev->flags & IFF_ALLMULTI)
306 dev_set_allmulti(real_dev, -1);
307 if (dev->flags & IFF_PROMISC)
308 dev_set_promiscuity(real_dev, -1);
309
Joe Perches53a2b3a2012-05-08 18:56:47 +0000310 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000311 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700312
Jay Vosburghadc667e2009-04-25 18:03:35 -0700313 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 return 0;
315}
316
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800317static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
Patrick McHardy39aaac12007-11-10 21:52:35 -0800318{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000319 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy39aaac12007-11-10 21:52:35 -0800320 struct sockaddr *addr = p;
321 int err;
322
323 if (!is_valid_ether_addr(addr->sa_data))
324 return -EADDRNOTAVAIL;
325
326 if (!(dev->flags & IFF_UP))
327 goto out;
328
Joe Perches53a2b3a2012-05-08 18:56:47 +0000329 if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000330 err = dev_uc_add(real_dev, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800331 if (err < 0)
332 return err;
333 }
334
Joe Perches53a2b3a2012-05-08 18:56:47 +0000335 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000336 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800337
338out:
Joe Perches07fc67b2014-01-20 09:52:14 -0800339 ether_addr_copy(dev->dev_addr, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800340 return 0;
341}
342
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800343static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000345 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Stephen Hemminger656299f2008-11-19 21:53:47 -0800346 const struct net_device_ops *ops = real_dev->netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 struct ifreq ifrr;
348 int err = -EOPNOTSUPP;
349
350 strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
351 ifrr.ifr_ifru = ifr->ifr_ifru;
352
Patrick McHardy2029cc22008-01-21 00:26:41 -0800353 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 case SIOCGMIIPHY:
355 case SIOCGMIIREG:
356 case SIOCSMIIREG:
Stefan Sørensena6111d32014-06-27 11:59:11 +0200357 case SIOCSHWTSTAMP:
358 case SIOCGHWTSTAMP:
Stephen Hemminger656299f2008-11-19 21:53:47 -0800359 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
360 err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 }
363
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900364 if (!err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 ifr->ifr_ifru = ifrr.ifr_ifru;
366
367 return err;
368}
369
Frank Blaschkacc883d12009-01-08 10:50:20 -0800370static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
371{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000372 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Frank Blaschkacc883d12009-01-08 10:50:20 -0800373 const struct net_device_ops *ops = real_dev->netdev_ops;
374 int err = 0;
375
376 if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
David S. Miller9d40bbd2009-03-04 23:46:25 -0800377 err = ops->ndo_neigh_setup(real_dev, pa);
Frank Blaschkacc883d12009-01-08 10:50:20 -0800378
379 return err;
380}
381
Amerigo Wangf4d53922012-10-29 17:22:28 +0000382#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000383static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
384 struct scatterlist *sgl, unsigned int sgc)
385{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000386 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000387 const struct net_device_ops *ops = real_dev->netdev_ops;
388 int rc = 0;
389
390 if (ops->ndo_fcoe_ddp_setup)
391 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
392
393 return rc;
394}
395
396static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
397{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000398 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000399 const struct net_device_ops *ops = real_dev->netdev_ops;
400 int len = 0;
401
402 if (ops->ndo_fcoe_ddp_done)
403 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
404
405 return len;
406}
Yi Zou0af46d92009-08-31 12:31:55 +0000407
408static int vlan_dev_fcoe_enable(struct net_device *dev)
409{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000410 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000411 const struct net_device_ops *ops = real_dev->netdev_ops;
412 int rc = -EINVAL;
413
414 if (ops->ndo_fcoe_enable)
415 rc = ops->ndo_fcoe_enable(real_dev);
416 return rc;
417}
418
419static int vlan_dev_fcoe_disable(struct net_device *dev)
420{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000421 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000422 const struct net_device_ops *ops = real_dev->netdev_ops;
423 int rc = -EINVAL;
424
425 if (ops->ndo_fcoe_disable)
426 rc = ops->ndo_fcoe_disable(real_dev);
427 return rc;
428}
Yi Zoud6534792009-10-28 18:25:16 +0000429
430static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
431{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000432 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zoud6534792009-10-28 18:25:16 +0000433 const struct net_device_ops *ops = real_dev->netdev_ops;
434 int rc = -EINVAL;
435
436 if (ops->ndo_fcoe_get_wwn)
437 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
438 return rc;
439}
Yi Zou4ea09c92011-02-01 07:22:11 +0000440
441static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
442 struct scatterlist *sgl, unsigned int sgc)
443{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000444 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou4ea09c92011-02-01 07:22:11 +0000445 const struct net_device_ops *ops = real_dev->netdev_ops;
446 int rc = 0;
447
448 if (ops->ndo_fcoe_ddp_target)
449 rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
450
451 return rc;
452}
Vasu Devb85daa52009-08-14 12:41:07 +0000453#endif
454
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800455static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700456{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000457 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700458
Matthijs Kooijmandeede2f2011-10-31 04:53:13 +0000459 if (dev->flags & IFF_UP) {
460 if (change & IFF_ALLMULTI)
461 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
462 if (change & IFF_PROMISC)
463 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
464 }
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700465}
466
Chris Leeche83a2ea2008-01-31 16:53:23 -0800467static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468{
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400469 dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
470 dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471}
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800472
473/*
474 * vlan network devices have devices nesting below it, and are a special
475 * "super class" of normal network devices; split their locks off into a
476 * separate class since they always nest.
477 */
478static struct lock_class_key vlan_netdev_xmit_lock_key;
David S. Millercf508b12008-07-22 14:16:42 -0700479static struct lock_class_key vlan_netdev_addr_lock_key;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800480
David S. Millere8a04642008-07-17 00:34:19 -0700481static void vlan_dev_set_lockdep_one(struct net_device *dev,
482 struct netdev_queue *txq,
483 void *_subclass)
David S. Millerc773e842008-07-08 23:13:53 -0700484{
485 lockdep_set_class_and_subclass(&txq->_xmit_lock,
David S. Millere8a04642008-07-17 00:34:19 -0700486 &vlan_netdev_xmit_lock_key,
487 *(int *)_subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700488}
489
490static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
491{
David S. Millercf508b12008-07-22 14:16:42 -0700492 lockdep_set_class_and_subclass(&dev->addr_list_lock,
493 &vlan_netdev_addr_lock_key,
494 subclass);
David S. Millere8a04642008-07-17 00:34:19 -0700495 netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700496}
497
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400498static int vlan_dev_get_lock_subclass(struct net_device *dev)
499{
500 return vlan_dev_priv(dev)->nest_level;
501}
502
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800503static const struct header_ops vlan_header_ops = {
504 .create = vlan_dev_hard_header,
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800505 .parse = eth_header_parse,
506};
507
David S. Miller22053692013-12-31 16:23:35 -0500508static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev,
509 unsigned short type,
510 const void *daddr, const void *saddr,
511 unsigned int len)
512{
513 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
514 struct net_device *real_dev = vlan->real_dev;
515
Peter Boströmdd387432014-03-10 16:17:15 +0100516 if (saddr == NULL)
517 saddr = dev->dev_addr;
518
David S. Miller22053692013-12-31 16:23:35 -0500519 return dev_hard_header(skb, real_dev, type, daddr, saddr, len);
520}
521
522static const struct header_ops vlan_passthru_header_ops = {
523 .create = vlan_passthru_hard_header,
David S. Miller22053692013-12-31 16:23:35 -0500524 .parse = eth_header_parse,
525};
526
Doug Goldsteine949b092012-10-21 19:53:57 +0000527static struct device_type vlan_type = {
528 .name = "vlan",
529};
530
Eric Dumazet213b15c2010-11-11 09:42:45 +0000531static const struct net_device_ops vlan_netdev_ops;
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800532
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800533static int vlan_dev_init(struct net_device *dev)
534{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000535 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800536
Jay Vosburghadc667e2009-04-25 18:03:35 -0700537 netif_carrier_off(dev);
538
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800539 /* IFF_BROADCAST|IFF_MULTICAST; ??? */
John Fastabend194dbcc2010-05-12 21:31:06 +0000540 dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
541 IFF_MASTER | IFF_SLAVE);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800542 dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
543 (1<<__LINK_STATE_DORMANT))) |
544 (1<<__LINK_STATE_PRESENT);
545
Tom Herberta1882222015-12-14 11:19:43 -0800546 dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG |
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900547 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
Tom Herbert53692b12015-12-14 11:19:41 -0800548 NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC |
Michał Mirosław62f2a3a2011-07-13 14:10:29 +0000549 NETIF_F_ALL_FCOE;
550
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900551 dev->features |= real_dev->vlan_features | NETIF_F_LLTX |
552 NETIF_F_GSO_SOFTWARE;
Alexander Duyck1ae4be22008-09-11 20:17:05 -0700553 dev->gso_max_size = real_dev->gso_max_size;
Vlad Yasevich2adb9562014-03-27 22:14:49 -0400554 if (dev->features & NETIF_F_VLAN_FEATURES)
555 netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
556
Toshiaki Makita8d463502015-03-27 14:31:10 +0900557 dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE;
Patrick McHardy5fb13572008-05-20 14:54:50 -0700558
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800559 /* ipv6 shared card related stuff */
560 dev->dev_id = real_dev->dev_id;
561
562 if (is_zero_ether_addr(dev->dev_addr))
Bjørn Mork6b93f4a2013-08-30 18:08:45 +0200563 eth_hw_addr_inherit(dev, real_dev);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800564 if (is_zero_ether_addr(dev->broadcast))
565 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
566
Amerigo Wangf4d53922012-10-29 17:22:28 +0000567#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000568 dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
569#endif
570
Eric Dumazetd870bfb2011-03-18 00:27:27 +0000571 dev->needed_headroom = real_dev->needed_headroom;
Vlad Yasevichfc0d48b2014-03-26 11:47:56 -0400572 if (vlan_hw_offload_capable(real_dev->features,
573 vlan_dev_priv(dev)->vlan_proto)) {
David S. Miller22053692013-12-31 16:23:35 -0500574 dev->header_ops = &vlan_passthru_header_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800575 dev->hard_header_len = real_dev->hard_header_len;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800576 } else {
577 dev->header_ops = &vlan_header_ops;
578 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800579 }
580
Eric Dumazet213b15c2010-11-11 09:42:45 +0000581 dev->netdev_ops = &vlan_netdev_ops;
John Fastabend636e19a2010-10-30 14:22:42 +0000582
Doug Goldsteine949b092012-10-21 19:53:57 +0000583 SET_NETDEV_DEVTYPE(dev, &vlan_type);
584
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400585 vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev));
Eric Dumazet97932412009-11-17 04:53:09 +0000586
WANG Cong1c213bd2014-02-13 11:46:28 -0800587 vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
Jiri Pirko7da82c02011-12-08 04:11:15 +0000588 if (!vlan_dev_priv(dev)->vlan_pcpu_stats)
Eric Dumazet97932412009-11-17 04:53:09 +0000589 return -ENOMEM;
590
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800591 return 0;
592}
593
Pavel Emelyanov23556322008-04-04 12:45:12 -0700594static void vlan_dev_uninit(struct net_device *dev)
595{
596 struct vlan_priority_tci_mapping *pm;
Jiri Pirko7da82c02011-12-08 04:11:15 +0000597 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Pavel Emelyanov23556322008-04-04 12:45:12 -0700598 int i;
599
600 for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
601 while ((pm = vlan->egress_priority_map[i]) != NULL) {
602 vlan->egress_priority_map[i] = pm->next;
603 kfree(pm);
604 }
605 }
606}
607
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000608static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
609 netdev_features_t features)
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700610{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000611 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Bjørn Morkb29d3142013-05-01 23:06:42 +0000612 netdev_features_t old_features = features;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700613
Michal Kubečekda081432014-05-20 08:29:25 +0200614 features = netdev_intersect_features(features, real_dev->vlan_features);
Michał Mirosławbc5787c62011-11-15 15:29:55 +0000615 features |= NETIF_F_RXCSUM;
Michal Kubečekda081432014-05-20 08:29:25 +0200616 features = netdev_intersect_features(features, real_dev->features);
Shan Wei712ae512011-07-05 20:43:12 -0700617
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900618 features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
Michał Mirosławf0a619c2011-05-06 07:56:29 +0000619 features |= NETIF_F_LLTX;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700620
621 return features;
622}
623
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700624static int vlan_ethtool_get_settings(struct net_device *dev,
625 struct ethtool_cmd *cmd)
626{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000627 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Jiri Pirko4bc71cb2011-09-03 03:34:30 +0000628
629 return __ethtool_get_settings(vlan->real_dev, cmd);
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700630}
631
632static void vlan_ethtool_get_drvinfo(struct net_device *dev,
633 struct ethtool_drvinfo *info)
634{
Jiri Pirko7826d432013-01-06 00:44:26 +0000635 strlcpy(info->driver, vlan_fullname, sizeof(info->driver));
636 strlcpy(info->version, vlan_version, sizeof(info->version));
637 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700638}
639
Richard Cochran37dd9252014-11-21 14:16:20 +0100640static int vlan_ethtool_get_ts_info(struct net_device *dev,
641 struct ethtool_ts_info *info)
642{
643 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
644 const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops;
645
646 if (ops->get_ts_info) {
647 return ops->get_ts_info(vlan->real_dev, info);
648 } else {
649 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
650 SOF_TIMESTAMPING_SOFTWARE;
651 info->phc_index = -1;
652 }
653
654 return 0;
655}
656
Eric Dumazet28172732010-07-07 14:58:56 -0700657static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
Eric Dumazet97932412009-11-17 04:53:09 +0000658{
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800659 struct vlan_pcpu_stats *p;
660 u32 rx_errors = 0, tx_dropped = 0;
661 int i;
Eric Dumazet97932412009-11-17 04:53:09 +0000662
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800663 for_each_possible_cpu(i) {
664 u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
665 unsigned int start;
Eric Dumazet97932412009-11-17 04:53:09 +0000666
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800667 p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
668 do {
669 start = u64_stats_fetch_begin_irq(&p->syncp);
670 rxpackets = p->rx_packets;
671 rxbytes = p->rx_bytes;
672 rxmulticast = p->rx_multicast;
673 txpackets = p->tx_packets;
674 txbytes = p->tx_bytes;
675 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000676
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800677 stats->rx_packets += rxpackets;
678 stats->rx_bytes += rxbytes;
679 stats->multicast += rxmulticast;
680 stats->tx_packets += txpackets;
681 stats->tx_bytes += txbytes;
682 /* rx_errors & tx_dropped are u32 */
683 rx_errors += p->rx_errors;
684 tx_dropped += p->tx_dropped;
Eric Dumazet97932412009-11-17 04:53:09 +0000685 }
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800686 stats->rx_errors = rx_errors;
687 stats->tx_dropped = tx_dropped;
688
Eric Dumazet97932412009-11-17 04:53:09 +0000689 return stats;
690}
691
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000692#ifdef CONFIG_NET_POLL_CONTROLLER
Eric Dumazetde93cb22011-12-13 20:57:54 +0000693static void vlan_dev_poll_controller(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000694{
695 return;
696}
697
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700698static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000699{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000700 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
701 struct net_device *real_dev = vlan->real_dev;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000702 struct netpoll *netpoll;
703 int err = 0;
704
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700705 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000706 err = -ENOMEM;
707 if (!netpoll)
708 goto out;
709
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700710 err = __netpoll_setup(netpoll, real_dev);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000711 if (err) {
712 kfree(netpoll);
713 goto out;
714 }
715
Amerigo Wangf3da3892012-08-10 01:24:47 +0000716 vlan->netpoll = netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000717
718out:
719 return err;
720}
721
Eric Dumazetde93cb22011-12-13 20:57:54 +0000722static void vlan_dev_netpoll_cleanup(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000723{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000724 struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
725 struct netpoll *netpoll = vlan->netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000726
727 if (!netpoll)
728 return;
729
Amerigo Wangf3da3892012-08-10 01:24:47 +0000730 vlan->netpoll = NULL;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000731
Neil Horman2cde6ac2013-02-11 10:25:30 +0000732 __netpoll_free_async(netpoll);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000733}
734#endif /* CONFIG_NET_POLL_CONTROLLER */
735
Nicolas Dichtel2dbf6b52015-04-02 17:07:04 +0200736static int vlan_dev_get_iflink(const struct net_device *dev)
737{
738 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
739
740 return real_dev->ifindex;
741}
742
Patrick McHardy75b88462008-07-08 03:22:42 -0700743static const struct ethtool_ops vlan_ethtool_ops = {
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700744 .get_settings = vlan_ethtool_get_settings,
745 .get_drvinfo = vlan_ethtool_get_drvinfo,
Patrick McHardy75b88462008-07-08 03:22:42 -0700746 .get_link = ethtool_op_get_link,
Richard Cochran37dd9252014-11-21 14:16:20 +0100747 .get_ts_info = vlan_ethtool_get_ts_info,
Patrick McHardy75b88462008-07-08 03:22:42 -0700748};
749
Stephen Hemminger656299f2008-11-19 21:53:47 -0800750static const struct net_device_ops vlan_netdev_ops = {
751 .ndo_change_mtu = vlan_dev_change_mtu,
752 .ndo_init = vlan_dev_init,
753 .ndo_uninit = vlan_dev_uninit,
754 .ndo_open = vlan_dev_open,
755 .ndo_stop = vlan_dev_stop,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800756 .ndo_start_xmit = vlan_dev_hard_start_xmit,
757 .ndo_validate_addr = eth_validate_addr,
758 .ndo_set_mac_address = vlan_dev_set_mac_address,
759 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800760 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
761 .ndo_do_ioctl = vlan_dev_ioctl,
Frank Blaschkacc883d12009-01-08 10:50:20 -0800762 .ndo_neigh_setup = vlan_dev_neigh_setup,
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000763 .ndo_get_stats64 = vlan_dev_get_stats64,
Amerigo Wangf4d53922012-10-29 17:22:28 +0000764#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000765 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
766 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
Yi Zou0af46d92009-08-31 12:31:55 +0000767 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
768 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
Yi Zoud6534792009-10-28 18:25:16 +0000769 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
Yi Zou4ea09c92011-02-01 07:22:11 +0000770 .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
Vasu Devb85daa52009-08-14 12:41:07 +0000771#endif
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000772#ifdef CONFIG_NET_POLL_CONTROLLER
773 .ndo_poll_controller = vlan_dev_poll_controller,
774 .ndo_netpoll_setup = vlan_dev_netpoll_setup,
775 .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup,
776#endif
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700777 .ndo_fix_features = vlan_dev_fix_features,
Ido Schimmel9d547832015-12-15 16:03:34 +0100778 .ndo_fdb_add = switchdev_port_fdb_add,
779 .ndo_fdb_del = switchdev_port_fdb_del,
780 .ndo_fdb_dump = switchdev_port_fdb_dump,
781 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
782 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
783 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400784 .ndo_get_lock_subclass = vlan_dev_get_lock_subclass,
Nicolas Dichtel2dbf6b52015-04-02 17:07:04 +0200785 .ndo_get_iflink = vlan_dev_get_iflink,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800786};
787
Eric Dumazeta48e5fa2014-07-02 02:25:15 -0700788static void vlan_dev_free(struct net_device *dev)
789{
790 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
791
792 free_percpu(vlan->vlan_pcpu_stats);
793 vlan->vlan_pcpu_stats = NULL;
794 free_netdev(dev);
795}
796
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800797void vlan_setup(struct net_device *dev)
798{
799 ether_setup(dev);
800
Phil Sutter2e659c02015-08-18 10:30:36 +0200801 dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE;
Eric Dumazet02875872014-10-05 18:38:35 -0700802 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
803 netif_keep_dst(dev);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800804
Stephen Hemminger656299f2008-11-19 21:53:47 -0800805 dev->netdev_ops = &vlan_netdev_ops;
Eric Dumazeta48e5fa2014-07-02 02:25:15 -0700806 dev->destructor = vlan_dev_free;
Patrick McHardy75b88462008-07-08 03:22:42 -0700807 dev->ethtool_ops = &vlan_ethtool_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800808
Joe Perches423049a2015-03-02 19:54:52 -0800809 eth_zero_addr(dev->broadcast);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800810}