blob: fbfacd51aa3407f3d0289468a073da04fecd742e [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{
Paolo Abeni18d3df32016-07-14 18:00:10 +0200149 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
150 unsigned int max_mtu = real_dev->mtu;
151
152 if (netif_reduces_vlan_mtu(real_dev))
153 max_mtu -= VLAN_HLEN;
154 if (max_mtu < new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 return -ERANGE;
156
157 dev->mtu = new_mtu;
158
159 return 0;
160}
161
Patrick McHardyc17d8872007-06-13 12:05:22 -0700162void vlan_dev_set_ingress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700163 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000165 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb020cb42007-06-13 12:07:22 -0700166
167 if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
168 vlan->nr_ingress_mappings--;
169 else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
170 vlan->nr_ingress_mappings++;
171
172 vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173}
174
Patrick McHardyc17d8872007-06-13 12:05:22 -0700175int vlan_dev_set_egress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700176 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000178 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 struct vlan_priority_tci_mapping *mp = NULL;
180 struct vlan_priority_tci_mapping *np;
Eric Dumazet05423b22009-10-26 18:40:35 -0700181 u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900182
Patrick McHardyc17d8872007-06-13 12:05:22 -0700183 /* See if a priority mapping exists.. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700184 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700185 while (mp) {
186 if (mp->priority == skb_prio) {
Patrick McHardyb020cb42007-06-13 12:07:22 -0700187 if (mp->vlan_qos && !vlan_qos)
188 vlan->nr_egress_mappings--;
189 else if (!mp->vlan_qos && vlan_qos)
190 vlan->nr_egress_mappings++;
191 mp->vlan_qos = vlan_qos;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700192 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700194 mp = mp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700196
197 /* Create a new mapping then. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700198 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700199 np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
200 if (!np)
201 return -ENOBUFS;
202
203 np->next = mp;
204 np->priority = skb_prio;
Patrick McHardyb020cb42007-06-13 12:07:22 -0700205 np->vlan_qos = vlan_qos;
Eric Dumazet3e3aac42013-07-18 09:35:10 -0700206 /* Before inserting this element in hash table, make sure all its fields
207 * are committed to memory.
David S. Millere267cb92013-11-11 00:42:07 -0500208 * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask()
Eric Dumazet3e3aac42013-07-18 09:35:10 -0700209 */
210 smp_wmb();
Patrick McHardyb020cb42007-06-13 12:07:22 -0700211 vlan->egress_priority_map[skb_prio & 0xF] = np;
212 if (vlan_qos)
213 vlan->nr_egress_mappings++;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700214 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215}
216
Patrick McHardya4bf3af42007-06-13 12:07:37 -0700217/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700218int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000220 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700221 u32 old_flags = vlan->flags;
222
Patrick McHardy5e756592009-11-25 07:54:54 +0000223 if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
David Ward86fbe9b2013-02-08 17:17:07 +0000224 VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP))
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700225 return -EINVAL;
226
227 vlan->flags = (old_flags & ~mask) | (flags & mask);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700228
229 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
230 if (vlan->flags & VLAN_FLAG_GVRP)
231 vlan_gvrp_request_join(dev);
232 else
233 vlan_gvrp_request_leave(dev);
234 }
David Ward86fbe9b2013-02-08 17:17:07 +0000235
236 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) {
237 if (vlan->flags & VLAN_FLAG_MVRP)
238 vlan_mvrp_request_join(dev);
239 else
240 vlan_mvrp_request_leave(dev);
241 }
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700242 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243}
244
Patrick McHardyc17d8872007-06-13 12:05:22 -0700245void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000247 strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248}
249
Mike Manning308453a2016-05-27 17:45:07 +0100250bool vlan_dev_inherit_address(struct net_device *dev,
251 struct net_device *real_dev)
252{
253 if (dev->addr_assign_type != NET_ADDR_STOLEN)
254 return false;
255
256 ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
257 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
258 return true;
259}
260
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800261static int vlan_dev_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000263 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700264 struct net_device *real_dev = vlan->real_dev;
265 int err;
266
Patrick McHardy5e756592009-11-25 07:54:54 +0000267 if (!(real_dev->flags & IFF_UP) &&
268 !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 return -ENETDOWN;
270
Mike Manning308453a2016-05-27 17:45:07 +0100271 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) &&
272 !vlan_dev_inherit_address(dev, real_dev)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000273 err = dev_uc_add(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700274 if (err < 0)
Wang Chen89146502008-07-14 20:59:03 -0700275 goto out;
Patrick McHardy8c979c22007-07-11 19:45:24 -0700276 }
Patrick McHardy8c979c22007-07-11 19:45:24 -0700277
Wang Chen89146502008-07-14 20:59:03 -0700278 if (dev->flags & IFF_ALLMULTI) {
279 err = dev_set_allmulti(real_dev, 1);
280 if (err < 0)
281 goto del_unicast;
282 }
283 if (dev->flags & IFF_PROMISC) {
284 err = dev_set_promiscuity(real_dev, 1);
285 if (err < 0)
286 goto clear_allmulti;
287 }
288
Joe Perches07fc67b2014-01-20 09:52:14 -0800289 ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700290
Patrick McHardy70c03b42008-07-05 21:26:57 -0700291 if (vlan->flags & VLAN_FLAG_GVRP)
292 vlan_gvrp_request_join(dev);
293
David Ward86fbe9b2013-02-08 17:17:07 +0000294 if (vlan->flags & VLAN_FLAG_MVRP)
295 vlan_mvrp_request_join(dev);
296
Phil Oester0ac820e2010-08-17 18:45:08 +0000297 if (netif_carrier_ok(real_dev))
298 netif_carrier_on(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 return 0;
Wang Chen89146502008-07-14 20:59:03 -0700300
301clear_allmulti:
302 if (dev->flags & IFF_ALLMULTI)
303 dev_set_allmulti(real_dev, -1);
304del_unicast:
Joe Perches53a2b3a2012-05-08 18:56:47 +0000305 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000306 dev_uc_del(real_dev, dev->dev_addr);
Wang Chen89146502008-07-14 20:59:03 -0700307out:
Jay Vosburghadc667e2009-04-25 18:03:35 -0700308 netif_carrier_off(dev);
Wang Chen89146502008-07-14 20:59:03 -0700309 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310}
311
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800312static int vlan_dev_stop(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000314 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700315 struct net_device *real_dev = vlan->real_dev;
316
Patrick McHardy56addd62007-07-14 18:53:28 -0700317 dev_mc_unsync(real_dev, dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000318 dev_uc_unsync(real_dev, dev);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700319 if (dev->flags & IFF_ALLMULTI)
320 dev_set_allmulti(real_dev, -1);
321 if (dev->flags & IFF_PROMISC)
322 dev_set_promiscuity(real_dev, -1);
323
Joe Perches53a2b3a2012-05-08 18:56:47 +0000324 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000325 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700326
Jay Vosburghadc667e2009-04-25 18:03:35 -0700327 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 return 0;
329}
330
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800331static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
Patrick McHardy39aaac12007-11-10 21:52:35 -0800332{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000333 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy39aaac12007-11-10 21:52:35 -0800334 struct sockaddr *addr = p;
335 int err;
336
337 if (!is_valid_ether_addr(addr->sa_data))
338 return -EADDRNOTAVAIL;
339
340 if (!(dev->flags & IFF_UP))
341 goto out;
342
Joe Perches53a2b3a2012-05-08 18:56:47 +0000343 if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000344 err = dev_uc_add(real_dev, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800345 if (err < 0)
346 return err;
347 }
348
Joe Perches53a2b3a2012-05-08 18:56:47 +0000349 if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000350 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800351
352out:
Joe Perches07fc67b2014-01-20 09:52:14 -0800353 ether_addr_copy(dev->dev_addr, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800354 return 0;
355}
356
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800357static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000359 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Stephen Hemminger656299f2008-11-19 21:53:47 -0800360 const struct net_device_ops *ops = real_dev->netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 struct ifreq ifrr;
362 int err = -EOPNOTSUPP;
363
364 strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
365 ifrr.ifr_ifru = ifr->ifr_ifru;
366
Patrick McHardy2029cc22008-01-21 00:26:41 -0800367 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 case SIOCGMIIPHY:
369 case SIOCGMIIREG:
370 case SIOCSMIIREG:
Stefan Sørensena6111d32014-06-27 11:59:11 +0200371 case SIOCSHWTSTAMP:
372 case SIOCGHWTSTAMP:
Stephen Hemminger656299f2008-11-19 21:53:47 -0800373 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
374 err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 }
377
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900378 if (!err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 ifr->ifr_ifru = ifrr.ifr_ifru;
380
381 return err;
382}
383
Frank Blaschkacc883d12009-01-08 10:50:20 -0800384static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
385{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000386 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Frank Blaschkacc883d12009-01-08 10:50:20 -0800387 const struct net_device_ops *ops = real_dev->netdev_ops;
388 int err = 0;
389
390 if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
David S. Miller9d40bbd2009-03-04 23:46:25 -0800391 err = ops->ndo_neigh_setup(real_dev, pa);
Frank Blaschkacc883d12009-01-08 10:50:20 -0800392
393 return err;
394}
395
Amerigo Wangf4d53922012-10-29 17:22:28 +0000396#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000397static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
398 struct scatterlist *sgl, unsigned int sgc)
399{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000400 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000401 const struct net_device_ops *ops = real_dev->netdev_ops;
402 int rc = 0;
403
404 if (ops->ndo_fcoe_ddp_setup)
405 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
406
407 return rc;
408}
409
410static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
411{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000412 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Vasu Devb85daa52009-08-14 12:41:07 +0000413 const struct net_device_ops *ops = real_dev->netdev_ops;
414 int len = 0;
415
416 if (ops->ndo_fcoe_ddp_done)
417 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
418
419 return len;
420}
Yi Zou0af46d92009-08-31 12:31:55 +0000421
422static int vlan_dev_fcoe_enable(struct net_device *dev)
423{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000424 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000425 const struct net_device_ops *ops = real_dev->netdev_ops;
426 int rc = -EINVAL;
427
428 if (ops->ndo_fcoe_enable)
429 rc = ops->ndo_fcoe_enable(real_dev);
430 return rc;
431}
432
433static int vlan_dev_fcoe_disable(struct net_device *dev)
434{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000435 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou0af46d92009-08-31 12:31:55 +0000436 const struct net_device_ops *ops = real_dev->netdev_ops;
437 int rc = -EINVAL;
438
439 if (ops->ndo_fcoe_disable)
440 rc = ops->ndo_fcoe_disable(real_dev);
441 return rc;
442}
Yi Zoud6534792009-10-28 18:25:16 +0000443
444static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
445{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000446 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zoud6534792009-10-28 18:25:16 +0000447 const struct net_device_ops *ops = real_dev->netdev_ops;
448 int rc = -EINVAL;
449
450 if (ops->ndo_fcoe_get_wwn)
451 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
452 return rc;
453}
Yi Zou4ea09c92011-02-01 07:22:11 +0000454
455static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
456 struct scatterlist *sgl, unsigned int sgc)
457{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000458 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Yi Zou4ea09c92011-02-01 07:22:11 +0000459 const struct net_device_ops *ops = real_dev->netdev_ops;
460 int rc = 0;
461
462 if (ops->ndo_fcoe_ddp_target)
463 rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
464
465 return rc;
466}
Vasu Devb85daa52009-08-14 12:41:07 +0000467#endif
468
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800469static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700470{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000471 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700472
Matthijs Kooijmandeede2f2011-10-31 04:53:13 +0000473 if (dev->flags & IFF_UP) {
474 if (change & IFF_ALLMULTI)
475 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
476 if (change & IFF_PROMISC)
477 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
478 }
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700479}
480
Chris Leeche83a2ea2008-01-31 16:53:23 -0800481static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482{
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400483 dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
484 dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485}
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800486
487/*
488 * vlan network devices have devices nesting below it, and are a special
489 * "super class" of normal network devices; split their locks off into a
490 * separate class since they always nest.
491 */
492static struct lock_class_key vlan_netdev_xmit_lock_key;
David S. Millercf508b12008-07-22 14:16:42 -0700493static struct lock_class_key vlan_netdev_addr_lock_key;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800494
David S. Millere8a04642008-07-17 00:34:19 -0700495static void vlan_dev_set_lockdep_one(struct net_device *dev,
496 struct netdev_queue *txq,
497 void *_subclass)
David S. Millerc773e842008-07-08 23:13:53 -0700498{
499 lockdep_set_class_and_subclass(&txq->_xmit_lock,
David S. Millere8a04642008-07-17 00:34:19 -0700500 &vlan_netdev_xmit_lock_key,
501 *(int *)_subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700502}
503
504static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
505{
David S. Millercf508b12008-07-22 14:16:42 -0700506 lockdep_set_class_and_subclass(&dev->addr_list_lock,
507 &vlan_netdev_addr_lock_key,
508 subclass);
David S. Millere8a04642008-07-17 00:34:19 -0700509 netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700510}
511
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400512static int vlan_dev_get_lock_subclass(struct net_device *dev)
513{
514 return vlan_dev_priv(dev)->nest_level;
515}
516
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800517static const struct header_ops vlan_header_ops = {
518 .create = vlan_dev_hard_header,
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800519 .parse = eth_header_parse,
520};
521
David S. Miller22053692013-12-31 16:23:35 -0500522static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev,
523 unsigned short type,
524 const void *daddr, const void *saddr,
525 unsigned int len)
526{
527 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
528 struct net_device *real_dev = vlan->real_dev;
529
Peter Boströmdd387432014-03-10 16:17:15 +0100530 if (saddr == NULL)
531 saddr = dev->dev_addr;
532
David S. Miller22053692013-12-31 16:23:35 -0500533 return dev_hard_header(skb, real_dev, type, daddr, saddr, len);
534}
535
536static const struct header_ops vlan_passthru_header_ops = {
537 .create = vlan_passthru_hard_header,
David S. Miller22053692013-12-31 16:23:35 -0500538 .parse = eth_header_parse,
539};
540
Doug Goldsteine949b092012-10-21 19:53:57 +0000541static struct device_type vlan_type = {
542 .name = "vlan",
543};
544
Eric Dumazet213b15c2010-11-11 09:42:45 +0000545static const struct net_device_ops vlan_netdev_ops;
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800546
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800547static int vlan_dev_init(struct net_device *dev)
548{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000549 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800550
Jay Vosburghadc667e2009-04-25 18:03:35 -0700551 netif_carrier_off(dev);
552
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800553 /* IFF_BROADCAST|IFF_MULTICAST; ??? */
John Fastabend194dbcc2010-05-12 21:31:06 +0000554 dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
555 IFF_MASTER | IFF_SLAVE);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800556 dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
557 (1<<__LINK_STATE_DORMANT))) |
558 (1<<__LINK_STATE_PRESENT);
559
Tom Herberta1882222015-12-14 11:19:43 -0800560 dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG |
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900561 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
Tom Herbert53692b12015-12-14 11:19:41 -0800562 NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC |
Michał Mirosław62f2a3a2011-07-13 14:10:29 +0000563 NETIF_F_ALL_FCOE;
564
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900565 dev->features |= real_dev->vlan_features | NETIF_F_LLTX |
566 NETIF_F_GSO_SOFTWARE;
Alexander Duyck1ae4be22008-09-11 20:17:05 -0700567 dev->gso_max_size = real_dev->gso_max_size;
Eric Dumazetf6773c52016-03-16 21:59:49 -0700568 dev->gso_max_segs = real_dev->gso_max_segs;
Vlad Yasevich2adb9562014-03-27 22:14:49 -0400569 if (dev->features & NETIF_F_VLAN_FEATURES)
570 netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
571
Toshiaki Makita8d463502015-03-27 14:31:10 +0900572 dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE;
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
Mike Manning308453a2016-05-27 17:45:07 +0100577 if (is_zero_ether_addr(dev->dev_addr)) {
578 ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
579 dev->addr_assign_type = NET_ADDR_STOLEN;
580 }
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800581 if (is_zero_ether_addr(dev->broadcast))
582 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
583
Amerigo Wangf4d53922012-10-29 17:22:28 +0000584#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000585 dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
586#endif
587
Eric Dumazetd870bfb2011-03-18 00:27:27 +0000588 dev->needed_headroom = real_dev->needed_headroom;
Vlad Yasevichfc0d48b2014-03-26 11:47:56 -0400589 if (vlan_hw_offload_capable(real_dev->features,
590 vlan_dev_priv(dev)->vlan_proto)) {
David S. Miller22053692013-12-31 16:23:35 -0500591 dev->header_ops = &vlan_passthru_header_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800592 dev->hard_header_len = real_dev->hard_header_len;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800593 } else {
594 dev->header_ops = &vlan_header_ops;
595 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800596 }
597
Eric Dumazet213b15c2010-11-11 09:42:45 +0000598 dev->netdev_ops = &vlan_netdev_ops;
John Fastabend636e19a2010-10-30 14:22:42 +0000599
Doug Goldsteine949b092012-10-21 19:53:57 +0000600 SET_NETDEV_DEVTYPE(dev, &vlan_type);
601
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400602 vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev));
Eric Dumazet97932412009-11-17 04:53:09 +0000603
WANG Cong1c213bd2014-02-13 11:46:28 -0800604 vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
Jiri Pirko7da82c02011-12-08 04:11:15 +0000605 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
617 for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
618 while ((pm = vlan->egress_priority_map[i]) != NULL) {
619 vlan->egress_priority_map[i] = pm->next;
620 kfree(pm);
621 }
622 }
623}
624
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000625static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
626 netdev_features_t features)
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700627{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000628 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
Bjørn Morkb29d3142013-05-01 23:06:42 +0000629 netdev_features_t old_features = features;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700630
Michal Kubečekda081432014-05-20 08:29:25 +0200631 features = netdev_intersect_features(features, real_dev->vlan_features);
Michał Mirosławbc5787c62011-11-15 15:29:55 +0000632 features |= NETIF_F_RXCSUM;
Michal Kubečekda081432014-05-20 08:29:25 +0200633 features = netdev_intersect_features(features, real_dev->features);
Shan Wei712ae512011-07-05 20:43:12 -0700634
Toshiaki Makita53f6b702014-12-10 11:43:13 +0900635 features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
Michał Mirosławf0a619c2011-05-06 07:56:29 +0000636 features |= NETIF_F_LLTX;
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700637
638 return features;
639}
640
David Decotigny57709792016-02-24 10:58:08 -0800641static int vlan_ethtool_get_link_ksettings(struct net_device *dev,
642 struct ethtool_link_ksettings *cmd)
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700643{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000644 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
Jiri Pirko4bc71cb2011-09-03 03:34:30 +0000645
David Decotigny57709792016-02-24 10:58:08 -0800646 return __ethtool_get_link_ksettings(vlan->real_dev, cmd);
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700647}
648
649static void vlan_ethtool_get_drvinfo(struct net_device *dev,
650 struct ethtool_drvinfo *info)
651{
Jiri Pirko7826d432013-01-06 00:44:26 +0000652 strlcpy(info->driver, vlan_fullname, sizeof(info->driver));
653 strlcpy(info->version, vlan_version, sizeof(info->version));
654 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700655}
656
Richard Cochran37dd9252014-11-21 14:16:20 +0100657static int vlan_ethtool_get_ts_info(struct net_device *dev,
658 struct ethtool_ts_info *info)
659{
660 const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
661 const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops;
662
663 if (ops->get_ts_info) {
664 return ops->get_ts_info(vlan->real_dev, info);
665 } else {
666 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
667 SOF_TIMESTAMPING_SOFTWARE;
668 info->phc_index = -1;
669 }
670
671 return 0;
672}
673
Eric Dumazet28172732010-07-07 14:58:56 -0700674static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
Eric Dumazet97932412009-11-17 04:53:09 +0000675{
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800676 struct vlan_pcpu_stats *p;
677 u32 rx_errors = 0, tx_dropped = 0;
678 int i;
Eric Dumazet97932412009-11-17 04:53:09 +0000679
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800680 for_each_possible_cpu(i) {
681 u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
682 unsigned int start;
Eric Dumazet97932412009-11-17 04:53:09 +0000683
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800684 p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
685 do {
686 start = u64_stats_fetch_begin_irq(&p->syncp);
687 rxpackets = p->rx_packets;
688 rxbytes = p->rx_bytes;
689 rxmulticast = p->rx_multicast;
690 txpackets = p->tx_packets;
691 txbytes = p->tx_bytes;
692 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000693
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800694 stats->rx_packets += rxpackets;
695 stats->rx_bytes += rxbytes;
696 stats->multicast += rxmulticast;
697 stats->tx_packets += txpackets;
698 stats->tx_bytes += txbytes;
699 /* rx_errors & tx_dropped are u32 */
700 rx_errors += p->rx_errors;
701 tx_dropped += p->tx_dropped;
Eric Dumazet97932412009-11-17 04:53:09 +0000702 }
Li RongQing5a4ae5f2014-04-21 19:49:08 +0800703 stats->rx_errors = rx_errors;
704 stats->tx_dropped = tx_dropped;
705
Eric Dumazet97932412009-11-17 04:53:09 +0000706 return stats;
707}
708
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000709#ifdef CONFIG_NET_POLL_CONTROLLER
Eric Dumazetde93cb22011-12-13 20:57:54 +0000710static void vlan_dev_poll_controller(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000711{
712 return;
713}
714
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700715static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000716{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000717 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
718 struct net_device *real_dev = vlan->real_dev;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000719 struct netpoll *netpoll;
720 int err = 0;
721
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700722 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000723 err = -ENOMEM;
724 if (!netpoll)
725 goto out;
726
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700727 err = __netpoll_setup(netpoll, real_dev);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000728 if (err) {
729 kfree(netpoll);
730 goto out;
731 }
732
Amerigo Wangf3da3892012-08-10 01:24:47 +0000733 vlan->netpoll = netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000734
735out:
736 return err;
737}
738
Eric Dumazetde93cb22011-12-13 20:57:54 +0000739static void vlan_dev_netpoll_cleanup(struct net_device *dev)
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000740{
Amerigo Wangf3da3892012-08-10 01:24:47 +0000741 struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
742 struct netpoll *netpoll = vlan->netpoll;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000743
744 if (!netpoll)
745 return;
746
Amerigo Wangf3da3892012-08-10 01:24:47 +0000747 vlan->netpoll = NULL;
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000748
Neil Horman2cde6ac2013-02-11 10:25:30 +0000749 __netpoll_free_async(netpoll);
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000750}
751#endif /* CONFIG_NET_POLL_CONTROLLER */
752
Nicolas Dichtel2dbf6b52015-04-02 17:07:04 +0200753static int vlan_dev_get_iflink(const struct net_device *dev)
754{
755 struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
756
757 return real_dev->ifindex;
758}
759
Patrick McHardy75b88462008-07-08 03:22:42 -0700760static const struct ethtool_ops vlan_ethtool_ops = {
David Decotigny57709792016-02-24 10:58:08 -0800761 .get_link_ksettings = vlan_ethtool_get_link_ksettings,
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700762 .get_drvinfo = vlan_ethtool_get_drvinfo,
Patrick McHardy75b88462008-07-08 03:22:42 -0700763 .get_link = ethtool_op_get_link,
Richard Cochran37dd9252014-11-21 14:16:20 +0100764 .get_ts_info = vlan_ethtool_get_ts_info,
Patrick McHardy75b88462008-07-08 03:22:42 -0700765};
766
Stephen Hemminger656299f2008-11-19 21:53:47 -0800767static const struct net_device_ops vlan_netdev_ops = {
768 .ndo_change_mtu = vlan_dev_change_mtu,
769 .ndo_init = vlan_dev_init,
770 .ndo_uninit = vlan_dev_uninit,
771 .ndo_open = vlan_dev_open,
772 .ndo_stop = vlan_dev_stop,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800773 .ndo_start_xmit = vlan_dev_hard_start_xmit,
774 .ndo_validate_addr = eth_validate_addr,
775 .ndo_set_mac_address = vlan_dev_set_mac_address,
776 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800777 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
778 .ndo_do_ioctl = vlan_dev_ioctl,
Frank Blaschkacc883d12009-01-08 10:50:20 -0800779 .ndo_neigh_setup = vlan_dev_neigh_setup,
Eric Dumazet9618e2f2010-06-24 00:55:06 +0000780 .ndo_get_stats64 = vlan_dev_get_stats64,
Amerigo Wangf4d53922012-10-29 17:22:28 +0000781#if IS_ENABLED(CONFIG_FCOE)
Vasu Devb85daa52009-08-14 12:41:07 +0000782 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
783 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
Yi Zou0af46d92009-08-31 12:31:55 +0000784 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
785 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
Yi Zoud6534792009-10-28 18:25:16 +0000786 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
Yi Zou4ea09c92011-02-01 07:22:11 +0000787 .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
Vasu Devb85daa52009-08-14 12:41:07 +0000788#endif
Benjamin LaHaise6d4cdf42011-12-08 06:20:49 +0000789#ifdef CONFIG_NET_POLL_CONTROLLER
790 .ndo_poll_controller = vlan_dev_poll_controller,
791 .ndo_netpoll_setup = vlan_dev_netpoll_setup,
792 .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup,
793#endif
Michał Mirosław8a0427b2011-04-02 22:49:12 -0700794 .ndo_fix_features = vlan_dev_fix_features,
Jiri Pirko18bfb922016-07-05 11:27:38 +0200795 .ndo_neigh_construct = netdev_default_l2upper_neigh_construct,
796 .ndo_neigh_destroy = netdev_default_l2upper_neigh_destroy,
Ido Schimmel9d547832015-12-15 16:03:34 +0100797 .ndo_fdb_add = switchdev_port_fdb_add,
798 .ndo_fdb_del = switchdev_port_fdb_del,
799 .ndo_fdb_dump = switchdev_port_fdb_dump,
800 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
801 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
802 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
Vlad Yasevichd38569a2014-05-16 17:04:55 -0400803 .ndo_get_lock_subclass = vlan_dev_get_lock_subclass,
Nicolas Dichtel2dbf6b52015-04-02 17:07:04 +0200804 .ndo_get_iflink = vlan_dev_get_iflink,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800805};
806
Eric Dumazeta48e5fa2014-07-02 02:25:15 -0700807static void vlan_dev_free(struct net_device *dev)
808{
809 struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
810
811 free_percpu(vlan->vlan_pcpu_stats);
812 vlan->vlan_pcpu_stats = NULL;
813 free_netdev(dev);
814}
815
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800816void vlan_setup(struct net_device *dev)
817{
818 ether_setup(dev);
819
Phil Sutter2e659c02015-08-18 10:30:36 +0200820 dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE;
Zhang Shengjue817af22016-02-18 10:00:11 +0000821 dev->priv_flags |= IFF_UNICAST_FLT;
Eric Dumazet02875872014-10-05 18:38:35 -0700822 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
823 netif_keep_dst(dev);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800824
Stephen Hemminger656299f2008-11-19 21:53:47 -0800825 dev->netdev_ops = &vlan_netdev_ops;
Eric Dumazeta48e5fa2014-07-02 02:25:15 -0700826 dev->destructor = vlan_dev_free;
Patrick McHardy75b88462008-07-08 03:22:42 -0700827 dev->ethtool_ops = &vlan_ethtool_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800828
Joe Perches423049a2015-03-02 19:54:52 -0800829 eth_zero_addr(dev->broadcast);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800830}