blob: 55be90826f5fd1317f961b9fbabb3f3b989f380e [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
23#include <linux/module.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090024#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <linux/skbuff.h>
26#include <linux/netdevice.h>
27#include <linux/etherdevice.h>
Patrick McHardy75b88462008-07-08 03:22:42 -070028#include <linux/ethtool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <net/arp.h>
30
31#include "vlan.h"
32#include "vlanproc.h"
33#include <linux/if_vlan.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35/*
36 * Rebuild the Ethernet MAC header. This is called after an ARP
37 * (or in future other address resolution) has completed on this
38 * sk_buff. We now let ARP fill in the other fields.
39 *
40 * This routine CANNOT use cached dst->neigh!
41 * Really, it is used only when dst->neigh is wrong.
42 *
43 * TODO: This needs a checkup, I'm ignorant here. --BLG
44 */
Patrick McHardyef3eb3e2008-01-21 00:22:11 -080045static int vlan_dev_rebuild_header(struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -070046{
47 struct net_device *dev = skb->dev;
48 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
49
50 switch (veth->h_vlan_encapsulated_proto) {
51#ifdef CONFIG_INET
Arnaldo Carvalho de Melo60678042008-09-20 22:20:49 -070052 case htons(ETH_P_IP):
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54 /* TODO: Confirm this will work with VLAN headers... */
55 return arp_find(veth->h_dest, skb);
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090056#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 default:
Patrick McHardy40f98e12008-01-21 00:24:30 -080058 pr_debug("%s: unable to resolve type %X addresses.\n",
59 dev->name, ntohs(veth->h_vlan_encapsulated_proto));
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090060
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 memcpy(veth->h_source, dev->dev_addr, ETH_ALEN);
62 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -070063 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
65 return 0;
66}
67
68static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb)
69{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -080070 if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) {
Patrick McHardy11a100f2008-07-08 15:36:57 -070071 if (skb_cow(skb, skb_headroom(skb)) < 0)
72 skb = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 if (skb) {
74 /* Lifted from Gleb's VLAN code... */
75 memmove(skb->data - ETH_HLEN,
76 skb->data - VLAN_ETH_HLEN, 12);
Arnaldo Carvalho de Melob0e380b2007-04-10 21:21:55 -070077 skb->mac_header += VLAN_HLEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 }
79 }
80
81 return skb;
82}
83
Pavel Emelyanov91b4f952008-01-21 00:28:03 -080084static inline void vlan_set_encap_proto(struct sk_buff *skb,
85 struct vlan_hdr *vhdr)
86{
87 __be16 proto;
88 unsigned char *rawp;
89
90 /*
91 * Was a VLAN packet, grab the encapsulated protocol, which the layer
92 * three protocols care about.
93 */
94
95 proto = vhdr->h_vlan_encapsulated_proto;
96 if (ntohs(proto) >= 1536) {
97 skb->protocol = proto;
98 return;
99 }
100
101 rawp = skb->data;
102 if (*(unsigned short *)rawp == 0xFFFF)
103 /*
104 * This is a magic hack to spot IPX packets. Older Novell
105 * breaks the protocol design and runs IPX over 802.3 without
106 * an 802.2 LLC layer. We look for FFFF which isn't a used
107 * 802.2 SSAP/DSAP. This won't work for fault tolerant netware
108 * but does for the rest.
109 */
110 skb->protocol = htons(ETH_P_802_3);
111 else
112 /*
113 * Real 802.2 LLC
114 */
115 skb->protocol = htons(ETH_P_802_2);
116}
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118/*
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900119 * Determine the packet's protocol ID. The rule here is that we
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 * assume 802.3 if the type field is short enough to be a length.
121 * This is normal practice and works for any 'now in use' protocol.
122 *
123 * Also, at this point we assume that we ARE dealing exclusively with
124 * VLAN packets, or packets that should be made into VLAN packets based
125 * on a default VLAN ID.
126 *
127 * NOTE: Should be similar to ethernet/eth.c.
128 *
129 * SANITY NOTE: This method is called when a packet is moving up the stack
130 * towards userland. To get here, it would have already passed
131 * through the ethernet/eth.c eth_type_trans() method.
132 * SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be
133 * stored UNALIGNED in the memory. RISC systems don't like
134 * such cases very much...
Patrick McHardy2029cc22008-01-21 00:26:41 -0800135 * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be
136 * aligned, so there doesn't need to be any of the unaligned
137 * stuff. It has been commented out now... --Ben
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 *
139 */
140int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
Patrick McHardy2029cc22008-01-21 00:26:41 -0800141 struct packet_type *ptype, struct net_device *orig_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142{
Evgeniy Polyakove7c243c2007-08-24 23:36:29 -0700143 struct vlan_hdr *vhdr;
Eric Dumazet97932412009-11-17 04:53:09 +0000144 struct vlan_rx_stats *rx_stats;
Patrick McHardy9bb85822008-07-08 03:24:44 -0700145 u16 vlan_id;
146 u16 vlan_tci;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
Patrick McHardy2029cc22008-01-21 00:26:41 -0800148 skb = skb_share_check(skb, GFP_ATOMIC);
149 if (skb == NULL)
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800150 goto err_free;
Evgeniy Polyakove7c243c2007-08-24 23:36:29 -0700151
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800152 if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
153 goto err_free;
Evgeniy Polyakove7c243c2007-08-24 23:36:29 -0700154
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800155 vhdr = (struct vlan_hdr *)skb->data;
Patrick McHardy9bb85822008-07-08 03:24:44 -0700156 vlan_tci = ntohs(vhdr->h_vlan_TCI);
157 vlan_id = vlan_tci & VLAN_VID_MASK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 rcu_read_lock();
Patrick McHardy9bb85822008-07-08 03:24:44 -0700160 skb->dev = __find_vlan_dev(dev, vlan_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 if (!skb->dev) {
Patrick McHardy2029cc22008-01-21 00:26:41 -0800162 pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
Patrick McHardy9bb85822008-07-08 03:24:44 -0700163 __func__, vlan_id, dev->name);
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800164 goto err_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165 }
166
Eric Dumazet2dc85e92010-01-24 19:52:24 -0800167 rx_stats = per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats,
Eric Dumazet97932412009-11-17 04:53:09 +0000168 smp_processor_id());
169 rx_stats->rx_packets++;
170 rx_stats->rx_bytes += skb->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Herbert Xucbb042f2006-03-20 22:43:56 -0800172 skb_pull_rcsum(skb, VLAN_HLEN);
Stephen Hemmingera3884422005-12-14 16:23:16 -0800173
Patrick McHardy9bb85822008-07-08 03:24:44 -0700174 skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
Patrick McHardy40f98e12008-01-21 00:24:30 -0800176 pr_debug("%s: priority: %u for TCI: %hu\n",
Patrick McHardy9bb85822008-07-08 03:24:44 -0700177 __func__, skb->priority, vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 switch (skb->pkt_type) {
180 case PACKET_BROADCAST: /* Yeah, stats collect these together.. */
Patrick McHardy2029cc22008-01-21 00:26:41 -0800181 /* stats->broadcast ++; // no such counter :-( */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 break;
183
184 case PACKET_MULTICAST:
Eric Dumazet97932412009-11-17 04:53:09 +0000185 rx_stats->multicast++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 break;
187
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900188 case PACKET_OTHERHOST:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 /* Our lower layer thinks this is not local, let's make sure.
Patrick McHardy2029cc22008-01-21 00:26:41 -0800190 * This allows the VLAN to have a different MAC than the
191 * underlying device, and still route correctly.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 */
Patrick McHardy2029cc22008-01-21 00:26:41 -0800193 if (!compare_ether_addr(eth_hdr(skb)->h_dest,
194 skb->dev->dev_addr))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 skb->pkt_type = PACKET_HOST;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 break;
197 default:
198 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -0700199 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Pavel Emelyanov91b4f952008-01-21 00:28:03 -0800201 vlan_set_encap_proto(skb, vhdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 skb = vlan_check_reorder_header(skb);
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800204 if (!skb) {
Eric Dumazet97932412009-11-17 04:53:09 +0000205 rx_stats->rx_errors++;
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800206 goto err_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 }
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800208
209 netif_rx(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 rcu_read_unlock();
Patrick McHardy31ffdbcb2008-01-21 00:27:18 -0800211 return NET_RX_SUCCESS;
212
213err_unlock:
214 rcu_read_unlock();
215err_free:
216 kfree_skb(skb);
217 return NET_RX_DROP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218}
219
Patrick McHardy9bb85822008-07-08 03:24:44 -0700220static inline u16
Patrick McHardy2029cc22008-01-21 00:26:41 -0800221vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222{
Patrick McHardy2029cc22008-01-21 00:26:41 -0800223 struct vlan_priority_tci_mapping *mp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224
Patrick McHardy2029cc22008-01-21 00:26:41 -0800225 mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 while (mp) {
227 if (mp->priority == skb->priority) {
Patrick McHardy2029cc22008-01-21 00:26:41 -0800228 return mp->vlan_qos; /* This should already be shifted
229 * to mask correctly with the
230 * VLAN's TCI */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 }
232 mp = mp->next;
233 }
234 return 0;
235}
236
237/*
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900238 * Create the VLAN header for an arbitrary protocol layer
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 *
240 * saddr=NULL means use device source address
241 * daddr=NULL means leave destination address (eg unresolved arp)
242 *
243 * This is called when the SKB is moving down the stack towards the
244 * physical devices.
245 */
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800246static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
247 unsigned short type,
248 const void *daddr, const void *saddr,
249 unsigned int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250{
251 struct vlan_hdr *vhdr;
Patrick McHardy1349fe92008-07-14 22:51:19 -0700252 unsigned int vhdrlen = 0;
Patrick McHardy9bb85822008-07-08 03:24:44 -0700253 u16 vlan_tci = 0;
Patrick McHardy1349fe92008-07-14 22:51:19 -0700254 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
Patrick McHardy11a100f2008-07-08 15:36:57 -0700256 if (WARN_ON(skb_headroom(skb) < dev->hard_header_len))
257 return -ENOSPC;
258
Patrick McHardy1349fe92008-07-14 22:51:19 -0700259 if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
261
Patrick McHardy9bb85822008-07-08 03:24:44 -0700262 vlan_tci = vlan_dev_info(dev)->vlan_id;
263 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
Patrick McHardy9bb85822008-07-08 03:24:44 -0700264 vhdr->h_vlan_TCI = htons(vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
266 /*
Octavian Purdilabf9ae532009-12-26 11:50:59 +0000267 * Set the protocol type. For a packet of type ETH_P_802_3/2 we
268 * put the length in here instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 */
Octavian Purdilabf9ae532009-12-26 11:50:59 +0000270 if (type != ETH_P_802_3 && type != ETH_P_802_2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 vhdr->h_vlan_encapsulated_proto = htons(type);
Patrick McHardy2029cc22008-01-21 00:26:41 -0800272 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 vhdr->h_vlan_encapsulated_proto = htons(len);
Jerome Borsboom279e1722007-04-13 16:12:47 -0700274
275 skb->protocol = htons(ETH_P_8021Q);
Patrick McHardy1349fe92008-07-14 22:51:19 -0700276 type = ETH_P_8021Q;
277 vhdrlen = VLAN_HLEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 }
279
280 /* Before delegating work to the lower layer, enter our MAC-address */
281 if (saddr == NULL)
282 saddr = dev->dev_addr;
283
Patrick McHardy1349fe92008-07-14 22:51:19 -0700284 /* Now make the underlying real hard header */
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800285 dev = vlan_dev_info(dev)->real_dev;
Patrick McHardy1349fe92008-07-14 22:51:19 -0700286 rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
287 if (rc > 0)
288 rc += vhdrlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 return rc;
290}
291
Stephen Hemminger6fef4c02009-08-31 19:50:41 +0000292static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
293 struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294{
Eric Dumazet2f8bc322009-09-03 02:19:58 -0700295 int i = skb_get_queue_mapping(skb);
296 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
Eric Dumazet1a123a32009-09-03 00:39:16 +0000298 unsigned int len;
299 int ret;
David S. Miller55b01e82008-02-23 20:09:11 -0800300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 /* Handle non-VLAN frames if they are sent to us, for example by DHCP.
302 *
303 * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
304 * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
305 */
Joonwoo Park6ab3b482007-11-29 22:16:41 +1100306 if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
Patrick McHardyd80aa312008-07-14 22:51:39 -0700307 vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
308 unsigned int orig_headroom = skb_headroom(skb);
Patrick McHardy9bb85822008-07-08 03:24:44 -0700309 u16 vlan_tci;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800311 vlan_dev_info(dev)->cnt_encap_on_xmit++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
Patrick McHardy9bb85822008-07-08 03:24:44 -0700313 vlan_tci = vlan_dev_info(dev)->vlan_id;
314 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
Patrick McHardy9bb85822008-07-08 03:24:44 -0700315 skb = __vlan_put_tag(skb, vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 if (!skb) {
Eric Dumazet450c4ea2009-05-18 00:35:38 +0000317 txq->tx_dropped++;
Patrick McHardyd80aa312008-07-14 22:51:39 -0700318 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 }
320
Patrick McHardy2029cc22008-01-21 00:26:41 -0800321 if (orig_headroom < VLAN_HLEN)
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800322 vlan_dev_info(dev)->cnt_inc_headroom_on_tx++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 }
324
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Arnd Bergmann8a83a002010-01-30 12:23:03 +0000326 skb_set_dev(skb, vlan_dev_info(dev)->real_dev);
Eric Dumazet1a123a32009-09-03 00:39:16 +0000327 len = skb->len;
328 ret = dev_queue_xmit(skb);
329
Eric Dumazet2d6c9ff2010-05-10 04:51:02 +0000330 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
Eric Dumazet1a123a32009-09-03 00:39:16 +0000331 txq->tx_packets++;
332 txq->tx_bytes += len;
333 } else
334 txq->tx_dropped++;
335
Patrick McHardycbbef5e2009-11-10 06:14:24 +0000336 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337}
338
Stephen Hemminger6fef4c02009-08-31 19:50:41 +0000339static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
340 struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341{
Eric Dumazet2f8bc322009-09-03 02:19:58 -0700342 int i = skb_get_queue_mapping(skb);
343 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
Patrick McHardy9bb85822008-07-08 03:24:44 -0700344 u16 vlan_tci;
Eric Dumazet1a123a32009-09-03 00:39:16 +0000345 unsigned int len;
346 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347
Patrick McHardy9bb85822008-07-08 03:24:44 -0700348 vlan_tci = vlan_dev_info(dev)->vlan_id;
349 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
350 skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800352 skb->dev = vlan_dev_info(dev)->real_dev;
Eric Dumazet1a123a32009-09-03 00:39:16 +0000353 len = skb->len;
354 ret = dev_queue_xmit(skb);
355
Eric Dumazet2d6c9ff2010-05-10 04:51:02 +0000356 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
Eric Dumazet1a123a32009-09-03 00:39:16 +0000357 txq->tx_packets++;
358 txq->tx_bytes += len;
359 } else
360 txq->tx_dropped++;
361
Patrick McHardycbbef5e2009-11-10 06:14:24 +0000362 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363}
364
Vasu Dev669d3e02010-03-23 14:41:45 +0000365static u16 vlan_dev_select_queue(struct net_device *dev, struct sk_buff *skb)
366{
367 struct net_device *rdev = vlan_dev_info(dev)->real_dev;
368 const struct net_device_ops *ops = rdev->netdev_ops;
369
370 return ops->ndo_select_queue(rdev, skb);
371}
372
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800373static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374{
375 /* TODO: gotta make sure the underlying layer can handle it,
376 * maybe an IFF_VLAN_CAPABLE flag for devices?
377 */
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800378 if (vlan_dev_info(dev)->real_dev->mtu < new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 return -ERANGE;
380
381 dev->mtu = new_mtu;
382
383 return 0;
384}
385
Patrick McHardyc17d8872007-06-13 12:05:22 -0700386void vlan_dev_set_ingress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700387 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800389 struct vlan_dev_info *vlan = vlan_dev_info(dev);
Patrick McHardyb020cb42007-06-13 12:07:22 -0700390
391 if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
392 vlan->nr_ingress_mappings--;
393 else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
394 vlan->nr_ingress_mappings++;
395
396 vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397}
398
Patrick McHardyc17d8872007-06-13 12:05:22 -0700399int vlan_dev_set_egress_priority(const struct net_device *dev,
Patrick McHardy9bb85822008-07-08 03:24:44 -0700400 u32 skb_prio, u16 vlan_prio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800402 struct vlan_dev_info *vlan = vlan_dev_info(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 struct vlan_priority_tci_mapping *mp = NULL;
404 struct vlan_priority_tci_mapping *np;
Eric Dumazet05423b22009-10-26 18:40:35 -0700405 u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900406
Patrick McHardyc17d8872007-06-13 12:05:22 -0700407 /* See if a priority mapping exists.. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700408 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700409 while (mp) {
410 if (mp->priority == skb_prio) {
Patrick McHardyb020cb42007-06-13 12:07:22 -0700411 if (mp->vlan_qos && !vlan_qos)
412 vlan->nr_egress_mappings--;
413 else if (!mp->vlan_qos && vlan_qos)
414 vlan->nr_egress_mappings++;
415 mp->vlan_qos = vlan_qos;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700416 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700418 mp = mp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 }
Patrick McHardyc17d8872007-06-13 12:05:22 -0700420
421 /* Create a new mapping then. */
Patrick McHardyb020cb42007-06-13 12:07:22 -0700422 mp = vlan->egress_priority_map[skb_prio & 0xF];
Patrick McHardyc17d8872007-06-13 12:05:22 -0700423 np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
424 if (!np)
425 return -ENOBUFS;
426
427 np->next = mp;
428 np->priority = skb_prio;
Patrick McHardyb020cb42007-06-13 12:07:22 -0700429 np->vlan_qos = vlan_qos;
430 vlan->egress_priority_map[skb_prio & 0xF] = np;
431 if (vlan_qos)
432 vlan->nr_egress_mappings++;
Patrick McHardyc17d8872007-06-13 12:05:22 -0700433 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434}
435
Patrick McHardya4bf3af42007-06-13 12:07:37 -0700436/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700437int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438{
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700439 struct vlan_dev_info *vlan = vlan_dev_info(dev);
440 u32 old_flags = vlan->flags;
441
Patrick McHardy5e756592009-11-25 07:54:54 +0000442 if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
443 VLAN_FLAG_LOOSE_BINDING))
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700444 return -EINVAL;
445
446 vlan->flags = (old_flags & ~mask) | (flags & mask);
Patrick McHardy70c03b42008-07-05 21:26:57 -0700447
448 if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
449 if (vlan->flags & VLAN_FLAG_GVRP)
450 vlan_gvrp_request_join(dev);
451 else
452 vlan_gvrp_request_leave(dev);
453 }
Patrick McHardyb3ce0322008-07-05 21:26:27 -0700454 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455}
456
Patrick McHardyc17d8872007-06-13 12:05:22 -0700457void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800459 strncpy(result, vlan_dev_info(dev)->real_dev->name, 23);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460}
461
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800462static int vlan_dev_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800464 struct vlan_dev_info *vlan = vlan_dev_info(dev);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700465 struct net_device *real_dev = vlan->real_dev;
466 int err;
467
Patrick McHardy5e756592009-11-25 07:54:54 +0000468 if (!(real_dev->flags & IFF_UP) &&
469 !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 return -ENETDOWN;
471
Patrick McHardy8c979c22007-07-11 19:45:24 -0700472 if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000473 err = dev_uc_add(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700474 if (err < 0)
Wang Chen89146502008-07-14 20:59:03 -0700475 goto out;
Patrick McHardy8c979c22007-07-11 19:45:24 -0700476 }
Patrick McHardy8c979c22007-07-11 19:45:24 -0700477
Wang Chen89146502008-07-14 20:59:03 -0700478 if (dev->flags & IFF_ALLMULTI) {
479 err = dev_set_allmulti(real_dev, 1);
480 if (err < 0)
481 goto del_unicast;
482 }
483 if (dev->flags & IFF_PROMISC) {
484 err = dev_set_promiscuity(real_dev, 1);
485 if (err < 0)
486 goto clear_allmulti;
487 }
488
489 memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700490
Patrick McHardy70c03b42008-07-05 21:26:57 -0700491 if (vlan->flags & VLAN_FLAG_GVRP)
492 vlan_gvrp_request_join(dev);
493
Jay Vosburghadc667e2009-04-25 18:03:35 -0700494 netif_carrier_on(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 return 0;
Wang Chen89146502008-07-14 20:59:03 -0700496
497clear_allmulti:
498 if (dev->flags & IFF_ALLMULTI)
499 dev_set_allmulti(real_dev, -1);
500del_unicast:
501 if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000502 dev_uc_del(real_dev, dev->dev_addr);
Wang Chen89146502008-07-14 20:59:03 -0700503out:
Jay Vosburghadc667e2009-04-25 18:03:35 -0700504 netif_carrier_off(dev);
Wang Chen89146502008-07-14 20:59:03 -0700505 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506}
507
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800508static int vlan_dev_stop(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509{
Patrick McHardy70c03b42008-07-05 21:26:57 -0700510 struct vlan_dev_info *vlan = vlan_dev_info(dev);
511 struct net_device *real_dev = vlan->real_dev;
512
513 if (vlan->flags & VLAN_FLAG_GVRP)
514 vlan_gvrp_request_leave(dev);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700515
Patrick McHardy56addd62007-07-14 18:53:28 -0700516 dev_mc_unsync(real_dev, dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000517 dev_uc_unsync(real_dev, dev);
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700518 if (dev->flags & IFF_ALLMULTI)
519 dev_set_allmulti(real_dev, -1);
520 if (dev->flags & IFF_PROMISC)
521 dev_set_promiscuity(real_dev, -1);
522
Patrick McHardy8c979c22007-07-11 19:45:24 -0700523 if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000524 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy8c979c22007-07-11 19:45:24 -0700525
Jay Vosburghadc667e2009-04-25 18:03:35 -0700526 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 return 0;
528}
529
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800530static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
Patrick McHardy39aaac12007-11-10 21:52:35 -0800531{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800532 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
Patrick McHardy39aaac12007-11-10 21:52:35 -0800533 struct sockaddr *addr = p;
534 int err;
535
536 if (!is_valid_ether_addr(addr->sa_data))
537 return -EADDRNOTAVAIL;
538
539 if (!(dev->flags & IFF_UP))
540 goto out;
541
542 if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) {
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000543 err = dev_uc_add(real_dev, addr->sa_data);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800544 if (err < 0)
545 return err;
546 }
547
548 if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000549 dev_uc_del(real_dev, dev->dev_addr);
Patrick McHardy39aaac12007-11-10 21:52:35 -0800550
551out:
552 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
553 return 0;
554}
555
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800556static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800558 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
Stephen Hemminger656299f2008-11-19 21:53:47 -0800559 const struct net_device_ops *ops = real_dev->netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 struct ifreq ifrr;
561 int err = -EOPNOTSUPP;
562
563 strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
564 ifrr.ifr_ifru = ifr->ifr_ifru;
565
Patrick McHardy2029cc22008-01-21 00:26:41 -0800566 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 case SIOCGMIIPHY:
568 case SIOCGMIIREG:
569 case SIOCSMIIREG:
Stephen Hemminger656299f2008-11-19 21:53:47 -0800570 if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
571 err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 }
574
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900575 if (!err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 ifr->ifr_ifru = ifrr.ifr_ifru;
577
578 return err;
579}
580
Frank Blaschkacc883d12009-01-08 10:50:20 -0800581static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
582{
583 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
584 const struct net_device_ops *ops = real_dev->netdev_ops;
585 int err = 0;
586
587 if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
David S. Miller9d40bbd2009-03-04 23:46:25 -0800588 err = ops->ndo_neigh_setup(real_dev, pa);
Frank Blaschkacc883d12009-01-08 10:50:20 -0800589
590 return err;
591}
592
Vasu Devb85daa52009-08-14 12:41:07 +0000593#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
594static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
595 struct scatterlist *sgl, unsigned int sgc)
596{
597 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
598 const struct net_device_ops *ops = real_dev->netdev_ops;
599 int rc = 0;
600
601 if (ops->ndo_fcoe_ddp_setup)
602 rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
603
604 return rc;
605}
606
607static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
608{
609 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
610 const struct net_device_ops *ops = real_dev->netdev_ops;
611 int len = 0;
612
613 if (ops->ndo_fcoe_ddp_done)
614 len = ops->ndo_fcoe_ddp_done(real_dev, xid);
615
616 return len;
617}
Yi Zou0af46d92009-08-31 12:31:55 +0000618
619static int vlan_dev_fcoe_enable(struct net_device *dev)
620{
621 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
622 const struct net_device_ops *ops = real_dev->netdev_ops;
623 int rc = -EINVAL;
624
625 if (ops->ndo_fcoe_enable)
626 rc = ops->ndo_fcoe_enable(real_dev);
627 return rc;
628}
629
630static int vlan_dev_fcoe_disable(struct net_device *dev)
631{
632 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
633 const struct net_device_ops *ops = real_dev->netdev_ops;
634 int rc = -EINVAL;
635
636 if (ops->ndo_fcoe_disable)
637 rc = ops->ndo_fcoe_disable(real_dev);
638 return rc;
639}
Yi Zoud6534792009-10-28 18:25:16 +0000640
641static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
642{
643 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
644 const struct net_device_ops *ops = real_dev->netdev_ops;
645 int rc = -EINVAL;
646
647 if (ops->ndo_fcoe_get_wwn)
648 rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
649 return rc;
650}
Vasu Devb85daa52009-08-14 12:41:07 +0000651#endif
652
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800653static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700654{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800655 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
Patrick McHardy6c78dcb2007-07-14 18:52:56 -0700656
657 if (change & IFF_ALLMULTI)
658 dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
659 if (change & IFF_PROMISC)
660 dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
661}
662
Chris Leeche83a2ea2008-01-31 16:53:23 -0800663static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800665 dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev);
Jiri Pirkoa748ee22010-04-01 21:22:09 +0000666 dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667}
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800668
669/*
670 * vlan network devices have devices nesting below it, and are a special
671 * "super class" of normal network devices; split their locks off into a
672 * separate class since they always nest.
673 */
674static struct lock_class_key vlan_netdev_xmit_lock_key;
David S. Millercf508b12008-07-22 14:16:42 -0700675static struct lock_class_key vlan_netdev_addr_lock_key;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800676
David S. Millere8a04642008-07-17 00:34:19 -0700677static void vlan_dev_set_lockdep_one(struct net_device *dev,
678 struct netdev_queue *txq,
679 void *_subclass)
David S. Millerc773e842008-07-08 23:13:53 -0700680{
681 lockdep_set_class_and_subclass(&txq->_xmit_lock,
David S. Millere8a04642008-07-17 00:34:19 -0700682 &vlan_netdev_xmit_lock_key,
683 *(int *)_subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700684}
685
686static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
687{
David S. Millercf508b12008-07-22 14:16:42 -0700688 lockdep_set_class_and_subclass(&dev->addr_list_lock,
689 &vlan_netdev_addr_lock_key,
690 subclass);
David S. Millere8a04642008-07-17 00:34:19 -0700691 netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
David S. Millerc773e842008-07-08 23:13:53 -0700692}
693
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800694static const struct header_ops vlan_header_ops = {
695 .create = vlan_dev_hard_header,
696 .rebuild = vlan_dev_rebuild_header,
697 .parse = eth_header_parse,
698};
699
Vasu Dev669d3e02010-03-23 14:41:45 +0000700static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops,
701 vlan_netdev_ops_sq, vlan_netdev_accel_ops_sq;
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800702
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800703static int vlan_dev_init(struct net_device *dev)
704{
Patrick McHardy9dfebcc2008-01-21 00:26:07 -0800705 struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800706 int subclass = 0;
707
Jay Vosburghadc667e2009-04-25 18:03:35 -0700708 netif_carrier_off(dev);
709
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800710 /* IFF_BROADCAST|IFF_MULTICAST; ??? */
Patrick McHardy0ed21b32008-03-26 00:15:17 -0700711 dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI);
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800712 dev->iflink = real_dev->ifindex;
713 dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
714 (1<<__LINK_STATE_DORMANT))) |
715 (1<<__LINK_STATE_PRESENT);
716
Patrick McHardy289c79a2008-05-23 00:22:04 -0700717 dev->features |= real_dev->features & real_dev->vlan_features;
Alexander Duyck1ae4be22008-09-11 20:17:05 -0700718 dev->gso_max_size = real_dev->gso_max_size;
Patrick McHardy5fb13572008-05-20 14:54:50 -0700719
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800720 /* ipv6 shared card related stuff */
721 dev->dev_id = real_dev->dev_id;
722
723 if (is_zero_ether_addr(dev->dev_addr))
724 memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len);
725 if (is_zero_ether_addr(dev->broadcast))
726 memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
727
Vasu Devb85daa52009-08-14 12:41:07 +0000728#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
729 dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
730#endif
731
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800732 if (real_dev->features & NETIF_F_HW_VLAN_TX) {
733 dev->header_ops = real_dev->header_ops;
734 dev->hard_header_len = real_dev->hard_header_len;
Vasu Dev669d3e02010-03-23 14:41:45 +0000735 if (real_dev->netdev_ops->ndo_select_queue)
736 dev->netdev_ops = &vlan_netdev_accel_ops_sq;
737 else
738 dev->netdev_ops = &vlan_netdev_accel_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800739 } else {
740 dev->header_ops = &vlan_header_ops;
741 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
Vasu Dev669d3e02010-03-23 14:41:45 +0000742 if (real_dev->netdev_ops->ndo_select_queue)
743 dev->netdev_ops = &vlan_netdev_ops_sq;
744 else
745 dev->netdev_ops = &vlan_netdev_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800746 }
747
Joonwoo Park26a25232008-07-08 03:22:16 -0700748 if (is_vlan_dev(real_dev))
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800749 subclass = 1;
750
David S. Millerc773e842008-07-08 23:13:53 -0700751 vlan_dev_set_lockdep_class(dev, subclass);
Eric Dumazet97932412009-11-17 04:53:09 +0000752
753 vlan_dev_info(dev)->vlan_rx_stats = alloc_percpu(struct vlan_rx_stats);
754 if (!vlan_dev_info(dev)->vlan_rx_stats)
755 return -ENOMEM;
756
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800757 return 0;
758}
759
Pavel Emelyanov23556322008-04-04 12:45:12 -0700760static void vlan_dev_uninit(struct net_device *dev)
761{
762 struct vlan_priority_tci_mapping *pm;
763 struct vlan_dev_info *vlan = vlan_dev_info(dev);
764 int i;
765
Eric Dumazet97932412009-11-17 04:53:09 +0000766 free_percpu(vlan->vlan_rx_stats);
767 vlan->vlan_rx_stats = NULL;
Pavel Emelyanov23556322008-04-04 12:45:12 -0700768 for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
769 while ((pm = vlan->egress_priority_map[i]) != NULL) {
770 vlan->egress_priority_map[i] = pm->next;
771 kfree(pm);
772 }
773 }
774}
775
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700776static int vlan_ethtool_get_settings(struct net_device *dev,
777 struct ethtool_cmd *cmd)
778{
779 const struct vlan_dev_info *vlan = vlan_dev_info(dev);
Patrick McHardyb1b67dd2009-04-20 04:49:28 +0000780 return dev_ethtool_get_settings(vlan->real_dev, cmd);
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700781}
782
783static void vlan_ethtool_get_drvinfo(struct net_device *dev,
784 struct ethtool_drvinfo *info)
785{
786 strcpy(info->driver, vlan_fullname);
787 strcpy(info->version, vlan_version);
788 strcpy(info->fw_version, "N/A");
789}
790
Patrick McHardy75b88462008-07-08 03:22:42 -0700791static u32 vlan_ethtool_get_rx_csum(struct net_device *dev)
792{
793 const struct vlan_dev_info *vlan = vlan_dev_info(dev);
Patrick McHardyb1b67dd2009-04-20 04:49:28 +0000794 return dev_ethtool_get_rx_csum(vlan->real_dev);
Patrick McHardy75b88462008-07-08 03:22:42 -0700795}
796
Patrick McHardy19b9a4e2008-07-14 22:51:01 -0700797static u32 vlan_ethtool_get_flags(struct net_device *dev)
798{
799 const struct vlan_dev_info *vlan = vlan_dev_info(dev);
Patrick McHardyb1b67dd2009-04-20 04:49:28 +0000800 return dev_ethtool_get_flags(vlan->real_dev);
Patrick McHardy19b9a4e2008-07-14 22:51:01 -0700801}
802
Eric Dumazet97932412009-11-17 04:53:09 +0000803static struct net_device_stats *vlan_dev_get_stats(struct net_device *dev)
804{
805 struct net_device_stats *stats = &dev->stats;
806
807 dev_txq_stats_fold(dev, stats);
808
809 if (vlan_dev_info(dev)->vlan_rx_stats) {
810 struct vlan_rx_stats *p, rx = {0};
811 int i;
812
813 for_each_possible_cpu(i) {
814 p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i);
815 rx.rx_packets += p->rx_packets;
816 rx.rx_bytes += p->rx_bytes;
817 rx.rx_errors += p->rx_errors;
818 rx.multicast += p->multicast;
819 }
820 stats->rx_packets = rx.rx_packets;
821 stats->rx_bytes = rx.rx_bytes;
822 stats->rx_errors = rx.rx_errors;
823 stats->multicast = rx.multicast;
824 }
825 return stats;
826}
827
Patrick McHardy75b88462008-07-08 03:22:42 -0700828static const struct ethtool_ops vlan_ethtool_ops = {
Stephen Hemmingerb30200612008-10-28 22:12:36 -0700829 .get_settings = vlan_ethtool_get_settings,
830 .get_drvinfo = vlan_ethtool_get_drvinfo,
Patrick McHardy75b88462008-07-08 03:22:42 -0700831 .get_link = ethtool_op_get_link,
832 .get_rx_csum = vlan_ethtool_get_rx_csum,
Patrick McHardy19b9a4e2008-07-14 22:51:01 -0700833 .get_flags = vlan_ethtool_get_flags,
Patrick McHardy75b88462008-07-08 03:22:42 -0700834};
835
Stephen Hemminger656299f2008-11-19 21:53:47 -0800836static const struct net_device_ops vlan_netdev_ops = {
837 .ndo_change_mtu = vlan_dev_change_mtu,
838 .ndo_init = vlan_dev_init,
839 .ndo_uninit = vlan_dev_uninit,
840 .ndo_open = vlan_dev_open,
841 .ndo_stop = vlan_dev_stop,
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800842 .ndo_start_xmit = vlan_dev_hard_start_xmit,
843 .ndo_validate_addr = eth_validate_addr,
844 .ndo_set_mac_address = vlan_dev_set_mac_address,
845 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
846 .ndo_set_multicast_list = vlan_dev_set_rx_mode,
847 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
848 .ndo_do_ioctl = vlan_dev_ioctl,
Frank Blaschkacc883d12009-01-08 10:50:20 -0800849 .ndo_neigh_setup = vlan_dev_neigh_setup,
Eric Dumazet97932412009-11-17 04:53:09 +0000850 .ndo_get_stats = vlan_dev_get_stats,
Vasu Devb85daa52009-08-14 12:41:07 +0000851#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
852 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
853 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
Yi Zou0af46d92009-08-31 12:31:55 +0000854 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
855 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
Yi Zoud6534792009-10-28 18:25:16 +0000856 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
Vasu Devb85daa52009-08-14 12:41:07 +0000857#endif
Eric Dumazetf7d1b9f2008-12-25 16:45:19 -0800858};
859
860static const struct net_device_ops vlan_netdev_accel_ops = {
861 .ndo_change_mtu = vlan_dev_change_mtu,
862 .ndo_init = vlan_dev_init,
863 .ndo_uninit = vlan_dev_uninit,
864 .ndo_open = vlan_dev_open,
865 .ndo_stop = vlan_dev_stop,
866 .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit,
Stephen Hemminger656299f2008-11-19 21:53:47 -0800867 .ndo_validate_addr = eth_validate_addr,
868 .ndo_set_mac_address = vlan_dev_set_mac_address,
869 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
870 .ndo_set_multicast_list = vlan_dev_set_rx_mode,
871 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
872 .ndo_do_ioctl = vlan_dev_ioctl,
Frank Blaschkacc883d12009-01-08 10:50:20 -0800873 .ndo_neigh_setup = vlan_dev_neigh_setup,
Eric Dumazet97932412009-11-17 04:53:09 +0000874 .ndo_get_stats = vlan_dev_get_stats,
Vasu Devb85daa52009-08-14 12:41:07 +0000875#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
876 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
877 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
Yi Zou0af46d92009-08-31 12:31:55 +0000878 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
879 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
Yi Zoud6534792009-10-28 18:25:16 +0000880 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
Vasu Devb85daa52009-08-14 12:41:07 +0000881#endif
Stephen Hemminger656299f2008-11-19 21:53:47 -0800882};
883
Vasu Dev669d3e02010-03-23 14:41:45 +0000884static const struct net_device_ops vlan_netdev_ops_sq = {
885 .ndo_select_queue = vlan_dev_select_queue,
886 .ndo_change_mtu = vlan_dev_change_mtu,
887 .ndo_init = vlan_dev_init,
888 .ndo_uninit = vlan_dev_uninit,
889 .ndo_open = vlan_dev_open,
890 .ndo_stop = vlan_dev_stop,
891 .ndo_start_xmit = vlan_dev_hard_start_xmit,
892 .ndo_validate_addr = eth_validate_addr,
893 .ndo_set_mac_address = vlan_dev_set_mac_address,
894 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
895 .ndo_set_multicast_list = vlan_dev_set_rx_mode,
896 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
897 .ndo_do_ioctl = vlan_dev_ioctl,
898 .ndo_neigh_setup = vlan_dev_neigh_setup,
899 .ndo_get_stats = vlan_dev_get_stats,
900#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
901 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
902 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
903 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
904 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
905 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
906#endif
907};
908
909static const struct net_device_ops vlan_netdev_accel_ops_sq = {
910 .ndo_select_queue = vlan_dev_select_queue,
911 .ndo_change_mtu = vlan_dev_change_mtu,
912 .ndo_init = vlan_dev_init,
913 .ndo_uninit = vlan_dev_uninit,
914 .ndo_open = vlan_dev_open,
915 .ndo_stop = vlan_dev_stop,
916 .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit,
917 .ndo_validate_addr = eth_validate_addr,
918 .ndo_set_mac_address = vlan_dev_set_mac_address,
919 .ndo_set_rx_mode = vlan_dev_set_rx_mode,
920 .ndo_set_multicast_list = vlan_dev_set_rx_mode,
921 .ndo_change_rx_flags = vlan_dev_change_rx_flags,
922 .ndo_do_ioctl = vlan_dev_ioctl,
923 .ndo_neigh_setup = vlan_dev_neigh_setup,
924 .ndo_get_stats = vlan_dev_get_stats,
925#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
926 .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
927 .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
928 .ndo_fcoe_enable = vlan_dev_fcoe_enable,
929 .ndo_fcoe_disable = vlan_dev_fcoe_disable,
930 .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
931#endif
932};
933
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800934void vlan_setup(struct net_device *dev)
935{
936 ether_setup(dev);
937
938 dev->priv_flags |= IFF_802_1Q_VLAN;
Eric Dumazet93f154b2009-05-18 22:19:19 -0700939 dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800940 dev->tx_queue_len = 0;
941
Stephen Hemminger656299f2008-11-19 21:53:47 -0800942 dev->netdev_ops = &vlan_netdev_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800943 dev->destructor = free_netdev;
Patrick McHardy75b88462008-07-08 03:22:42 -0700944 dev->ethtool_ops = &vlan_ethtool_ops;
Patrick McHardyef3eb3e2008-01-21 00:22:11 -0800945
946 memset(dev->broadcast, 0, ETH_ALEN);
947}