11da177e4SLinus Torvalds /* -*- linux-c -*- 21da177e4SLinus Torvalds * INET 802.1Q VLAN 31da177e4SLinus Torvalds * Ethernet-type device handling. 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Authors: Ben Greear <greearb@candelatech.com> 6ad712087SPatrick McHardy * Please send support related email to: netdev@vger.kernel.org 71da177e4SLinus Torvalds * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> 101da177e4SLinus Torvalds * - reset skb->pkt_type on incoming packets when MAC was changed 111da177e4SLinus Torvalds * - see that changed MAC is saddr for outgoing packets 121da177e4SLinus Torvalds * Oct 20, 2001: Ard van Breeman: 131da177e4SLinus Torvalds * - Fix MC-list, finally. 141da177e4SLinus Torvalds * - Flush MC-list on VLAN destroy. 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 181da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 191da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 201da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 211da177e4SLinus Torvalds */ 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #include <linux/module.h> 241da177e4SLinus Torvalds #include <linux/mm.h> 251da177e4SLinus Torvalds #include <linux/in.h> 261da177e4SLinus Torvalds #include <linux/init.h> 271da177e4SLinus Torvalds #include <asm/uaccess.h> /* for copy_from_user */ 281da177e4SLinus Torvalds #include <linux/skbuff.h> 291da177e4SLinus Torvalds #include <linux/netdevice.h> 301da177e4SLinus Torvalds #include <linux/etherdevice.h> 311da177e4SLinus Torvalds #include <net/datalink.h> 321da177e4SLinus Torvalds #include <net/p8022.h> 331da177e4SLinus Torvalds #include <net/arp.h> 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds #include "vlan.h" 361da177e4SLinus Torvalds #include "vlanproc.h" 371da177e4SLinus Torvalds #include <linux/if_vlan.h> 381da177e4SLinus Torvalds #include <net/ip.h> 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds /* 411da177e4SLinus Torvalds * Rebuild the Ethernet MAC header. This is called after an ARP 421da177e4SLinus Torvalds * (or in future other address resolution) has completed on this 431da177e4SLinus Torvalds * sk_buff. We now let ARP fill in the other fields. 441da177e4SLinus Torvalds * 451da177e4SLinus Torvalds * This routine CANNOT use cached dst->neigh! 461da177e4SLinus Torvalds * Really, it is used only when dst->neigh is wrong. 471da177e4SLinus Torvalds * 481da177e4SLinus Torvalds * TODO: This needs a checkup, I'm ignorant here. --BLG 491da177e4SLinus Torvalds */ 50ef3eb3e5SPatrick McHardy static int vlan_dev_rebuild_header(struct sk_buff *skb) 511da177e4SLinus Torvalds { 521da177e4SLinus Torvalds struct net_device *dev = skb->dev; 531da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds switch (veth->h_vlan_encapsulated_proto) { 561da177e4SLinus Torvalds #ifdef CONFIG_INET 571da177e4SLinus Torvalds case __constant_htons(ETH_P_IP): 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds /* TODO: Confirm this will work with VLAN headers... */ 601da177e4SLinus Torvalds return arp_find(veth->h_dest, skb); 611da177e4SLinus Torvalds #endif 621da177e4SLinus Torvalds default: 6340f98e1aSPatrick McHardy pr_debug("%s: unable to resolve type %X addresses.\n", 64d136fe72SAlexey Dobriyan dev->name, ntohs(veth->h_vlan_encapsulated_proto)); 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); 671da177e4SLinus Torvalds break; 683ff50b79SStephen Hemminger } 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds return 0; 711da177e4SLinus Torvalds } 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) 741da177e4SLinus Torvalds { 759dfebcc6SPatrick McHardy if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { 761da177e4SLinus Torvalds if (skb_shared(skb) || skb_cloned(skb)) { 771da177e4SLinus Torvalds struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC); 781da177e4SLinus Torvalds kfree_skb(skb); 791da177e4SLinus Torvalds skb = nskb; 801da177e4SLinus Torvalds } 811da177e4SLinus Torvalds if (skb) { 821da177e4SLinus Torvalds /* Lifted from Gleb's VLAN code... */ 831da177e4SLinus Torvalds memmove(skb->data - ETH_HLEN, 841da177e4SLinus Torvalds skb->data - VLAN_ETH_HLEN, 12); 85b0e380b1SArnaldo Carvalho de Melo skb->mac_header += VLAN_HLEN; 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds } 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds return skb; 901da177e4SLinus Torvalds } 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds /* 931da177e4SLinus Torvalds * Determine the packet's protocol ID. The rule here is that we 941da177e4SLinus Torvalds * assume 802.3 if the type field is short enough to be a length. 951da177e4SLinus Torvalds * This is normal practice and works for any 'now in use' protocol. 961da177e4SLinus Torvalds * 971da177e4SLinus Torvalds * Also, at this point we assume that we ARE dealing exclusively with 981da177e4SLinus Torvalds * VLAN packets, or packets that should be made into VLAN packets based 991da177e4SLinus Torvalds * on a default VLAN ID. 1001da177e4SLinus Torvalds * 1011da177e4SLinus Torvalds * NOTE: Should be similar to ethernet/eth.c. 1021da177e4SLinus Torvalds * 1031da177e4SLinus Torvalds * SANITY NOTE: This method is called when a packet is moving up the stack 1041da177e4SLinus Torvalds * towards userland. To get here, it would have already passed 1051da177e4SLinus Torvalds * through the ethernet/eth.c eth_type_trans() method. 1061da177e4SLinus Torvalds * SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be 1071da177e4SLinus Torvalds * stored UNALIGNED in the memory. RISC systems don't like 1081da177e4SLinus Torvalds * such cases very much... 1092029cc2cSPatrick McHardy * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be 1102029cc2cSPatrick McHardy * aligned, so there doesn't need to be any of the unaligned 1112029cc2cSPatrick McHardy * stuff. It has been commented out now... --Ben 1121da177e4SLinus Torvalds * 1131da177e4SLinus Torvalds */ 1141da177e4SLinus Torvalds int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, 115f2ccd8faSDavid S. Miller struct packet_type *ptype, struct net_device *orig_dev) 1161da177e4SLinus Torvalds { 11731ffdbcbSPatrick McHardy unsigned char *rawp; 118e7c243c9SEvgeniy Polyakov struct vlan_hdr *vhdr; 1191da177e4SLinus Torvalds unsigned short vid; 1201da177e4SLinus Torvalds struct net_device_stats *stats; 1211da177e4SLinus Torvalds unsigned short vlan_TCI; 1223c3f8f25SAlexey Dobriyan __be16 proto; 1231da177e4SLinus Torvalds 12431ffdbcbSPatrick McHardy if (dev->nd_net != &init_net) 12531ffdbcbSPatrick McHardy goto err_free; 126e730c155SEric W. Biederman 1272029cc2cSPatrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 1282029cc2cSPatrick McHardy if (skb == NULL) 12931ffdbcbSPatrick McHardy goto err_free; 130e7c243c9SEvgeniy Polyakov 13131ffdbcbSPatrick McHardy if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) 13231ffdbcbSPatrick McHardy goto err_free; 133e7c243c9SEvgeniy Polyakov 13431ffdbcbSPatrick McHardy vhdr = (struct vlan_hdr *)skb->data; 1351da177e4SLinus Torvalds vlan_TCI = ntohs(vhdr->h_vlan_TCI); 1361da177e4SLinus Torvalds vid = (vlan_TCI & VLAN_VID_MASK); 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds rcu_read_lock(); 1391da177e4SLinus Torvalds skb->dev = __find_vlan_dev(dev, vid); 1401da177e4SLinus Torvalds if (!skb->dev) { 1412029cc2cSPatrick McHardy pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n", 1422029cc2cSPatrick McHardy __FUNCTION__, (unsigned int)vid, dev->name); 14331ffdbcbSPatrick McHardy goto err_unlock; 1441da177e4SLinus Torvalds } 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds skb->dev->last_rx = jiffies; 1471da177e4SLinus Torvalds 1487bd38d77SPatrick McHardy stats = &skb->dev->stats; 1491da177e4SLinus Torvalds stats->rx_packets++; 1501da177e4SLinus Torvalds stats->rx_bytes += skb->len; 1511da177e4SLinus Torvalds 152cbb042f9SHerbert Xu skb_pull_rcsum(skb, VLAN_HLEN); 153a388442cSStephen Hemminger 1542029cc2cSPatrick McHardy skb->priority = vlan_get_ingress_priority(skb->dev, 1552029cc2cSPatrick McHardy ntohs(vhdr->h_vlan_TCI)); 1561da177e4SLinus Torvalds 15740f98e1aSPatrick McHardy pr_debug("%s: priority: %u for TCI: %hu\n", 15840f98e1aSPatrick McHardy __FUNCTION__, skb->priority, ntohs(vhdr->h_vlan_TCI)); 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds switch (skb->pkt_type) { 1611da177e4SLinus Torvalds case PACKET_BROADCAST: /* Yeah, stats collect these together.. */ 1622029cc2cSPatrick McHardy /* stats->broadcast ++; // no such counter :-( */ 1631da177e4SLinus Torvalds break; 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds case PACKET_MULTICAST: 1661da177e4SLinus Torvalds stats->multicast++; 1671da177e4SLinus Torvalds break; 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds case PACKET_OTHERHOST: 1701da177e4SLinus Torvalds /* Our lower layer thinks this is not local, let's make sure. 1712029cc2cSPatrick McHardy * This allows the VLAN to have a different MAC than the 1722029cc2cSPatrick McHardy * underlying device, and still route correctly. 1731da177e4SLinus Torvalds */ 1742029cc2cSPatrick McHardy if (!compare_ether_addr(eth_hdr(skb)->h_dest, 1752029cc2cSPatrick McHardy skb->dev->dev_addr)) 1761da177e4SLinus Torvalds skb->pkt_type = PACKET_HOST; 1771da177e4SLinus Torvalds break; 1781da177e4SLinus Torvalds default: 1791da177e4SLinus Torvalds break; 1803ff50b79SStephen Hemminger } 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds /* Was a VLAN packet, grab the encapsulated protocol, which the layer 1831da177e4SLinus Torvalds * three protocols care about. 1841da177e4SLinus Torvalds */ 1851da177e4SLinus Torvalds proto = vhdr->h_vlan_encapsulated_proto; 1861da177e4SLinus Torvalds if (ntohs(proto) >= 1536) { 18731ffdbcbSPatrick McHardy skb->protocol = proto; 18831ffdbcbSPatrick McHardy goto recv; 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* 1921da177e4SLinus Torvalds * This is a magic hack to spot IPX packets. Older Novell breaks 1931da177e4SLinus Torvalds * the protocol design and runs IPX over 802.3 without an 802.2 LLC 1941da177e4SLinus Torvalds * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This 1951da177e4SLinus Torvalds * won't work for fault tolerant netware but does for the rest. 1961da177e4SLinus Torvalds */ 19731ffdbcbSPatrick McHardy rawp = skb->data; 1981da177e4SLinus Torvalds if (*(unsigned short *)rawp == 0xFFFF) { 199b93b7eebSYOSHIFUJI Hideaki skb->protocol = htons(ETH_P_802_3); 20031ffdbcbSPatrick McHardy goto recv; 2011da177e4SLinus Torvalds } 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds /* 2041da177e4SLinus Torvalds * Real 802.2 LLC 2051da177e4SLinus Torvalds */ 206b93b7eebSYOSHIFUJI Hideaki skb->protocol = htons(ETH_P_802_2); 2071da177e4SLinus Torvalds 20831ffdbcbSPatrick McHardy recv: 2091da177e4SLinus Torvalds skb = vlan_check_reorder_header(skb); 21031ffdbcbSPatrick McHardy if (!skb) { 2111da177e4SLinus Torvalds stats->rx_errors++; 21231ffdbcbSPatrick McHardy goto err_unlock; 2131da177e4SLinus Torvalds } 21431ffdbcbSPatrick McHardy 21531ffdbcbSPatrick McHardy netif_rx(skb); 2161da177e4SLinus Torvalds rcu_read_unlock(); 21731ffdbcbSPatrick McHardy return NET_RX_SUCCESS; 21831ffdbcbSPatrick McHardy 21931ffdbcbSPatrick McHardy err_unlock: 22031ffdbcbSPatrick McHardy rcu_read_unlock(); 22131ffdbcbSPatrick McHardy err_free: 22231ffdbcbSPatrick McHardy kfree_skb(skb); 22331ffdbcbSPatrick McHardy return NET_RX_DROP; 2241da177e4SLinus Torvalds } 2251da177e4SLinus Torvalds 2262029cc2cSPatrick McHardy static inline unsigned short 2272029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 2281da177e4SLinus Torvalds { 2292029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 2301da177e4SLinus Torvalds 2312029cc2cSPatrick McHardy mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; 2321da177e4SLinus Torvalds while (mp) { 2331da177e4SLinus Torvalds if (mp->priority == skb->priority) { 2342029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 2352029cc2cSPatrick McHardy * to mask correctly with the 2362029cc2cSPatrick McHardy * VLAN's TCI */ 2371da177e4SLinus Torvalds } 2381da177e4SLinus Torvalds mp = mp->next; 2391da177e4SLinus Torvalds } 2401da177e4SLinus Torvalds return 0; 2411da177e4SLinus Torvalds } 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds /* 2441da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 2451da177e4SLinus Torvalds * 2461da177e4SLinus Torvalds * saddr=NULL means use device source address 2471da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 2481da177e4SLinus Torvalds * 2491da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 2501da177e4SLinus Torvalds * physical devices. 2511da177e4SLinus Torvalds */ 252ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 2533b04dddeSStephen Hemminger unsigned short type, 254ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 255ef3eb3e5SPatrick McHardy unsigned int len) 2561da177e4SLinus Torvalds { 2571da177e4SLinus Torvalds struct vlan_hdr *vhdr; 2581da177e4SLinus Torvalds unsigned short veth_TCI = 0; 2591da177e4SLinus Torvalds int rc = 0; 2601da177e4SLinus Torvalds int build_vlan_header = 0; 2612029cc2cSPatrick McHardy struct net_device *vdev = dev; 2621da177e4SLinus Torvalds 26340f98e1aSPatrick McHardy pr_debug("%s: skb: %p type: %hx len: %u vlan_id: %hx, daddr: %p\n", 2642029cc2cSPatrick McHardy __FUNCTION__, skb, type, len, vlan_dev_info(dev)->vlan_id, 2652029cc2cSPatrick McHardy daddr); 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvalds /* build vlan header only if re_order_header flag is NOT set. This 2681da177e4SLinus Torvalds * fixes some programs that get confused when they see a VLAN device 2691da177e4SLinus Torvalds * sending a frame that is VLAN encoded (the consensus is that the VLAN 2701da177e4SLinus Torvalds * device should look completely like an Ethernet device when the 2711da177e4SLinus Torvalds * REORDER_HEADER flag is set) The drawback to this is some extra 2721da177e4SLinus Torvalds * header shuffling in the hard_start_xmit. Users can turn off this 2731da177e4SLinus Torvalds * REORDER behaviour with the vconfig tool. 2741da177e4SLinus Torvalds */ 2759dfebcc6SPatrick McHardy if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) 276a4bf3af4SPatrick McHardy build_vlan_header = 1; 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds if (build_vlan_header) { 2791da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds /* build the four bytes that make this a VLAN header. */ 2821da177e4SLinus Torvalds 2832029cc2cSPatrick McHardy /* Now, construct the second two bytes. This field looks 2842029cc2cSPatrick McHardy * something like: 2851da177e4SLinus Torvalds * usr_priority: 3 bits (high bits) 2861da177e4SLinus Torvalds * CFI 1 bit 2871da177e4SLinus Torvalds * VLAN ID 12 bits (low bits) 2881da177e4SLinus Torvalds * 2891da177e4SLinus Torvalds */ 2909dfebcc6SPatrick McHardy veth_TCI = vlan_dev_info(dev)->vlan_id; 2911da177e4SLinus Torvalds veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds vhdr->h_vlan_TCI = htons(veth_TCI); 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds /* 2962029cc2cSPatrick McHardy * Set the protocol type. For a packet of type ETH_P_802_3 we 2972029cc2cSPatrick McHardy * put the length in here instead. It is up to the 802.2 2982029cc2cSPatrick McHardy * layer to carry protocol information. 2991da177e4SLinus Torvalds */ 3001da177e4SLinus Torvalds 3012029cc2cSPatrick McHardy if (type != ETH_P_802_3) 3021da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 3032029cc2cSPatrick McHardy else 3041da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 305279e172aSJerome Borsboom 306279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 307be8bd863SDavid S. Miller skb_reset_network_header(skb); 3081da177e4SLinus Torvalds } 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 3111da177e4SLinus Torvalds if (saddr == NULL) 3121da177e4SLinus Torvalds saddr = dev->dev_addr; 3131da177e4SLinus Torvalds 3149dfebcc6SPatrick McHardy dev = vlan_dev_info(dev)->real_dev; 3151da177e4SLinus Torvalds 3162029cc2cSPatrick McHardy /* MPLS can send us skbuffs w/out enough space. This check will grow 3172029cc2cSPatrick McHardy * the skb if it doesn't have enough headroom. Not a beautiful solution, 3182029cc2cSPatrick McHardy * so I'll tick a counter so that users can know it's happening... 3192029cc2cSPatrick McHardy * If they care... 3201da177e4SLinus Torvalds */ 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds /* NOTE: This may still break if the underlying device is not the final 3231da177e4SLinus Torvalds * device (and thus there are more headers to add...) It should work for 3241da177e4SLinus Torvalds * good-ole-ethernet though. 3251da177e4SLinus Torvalds */ 3261da177e4SLinus Torvalds if (skb_headroom(skb) < dev->hard_header_len) { 3271da177e4SLinus Torvalds struct sk_buff *sk_tmp = skb; 3281da177e4SLinus Torvalds skb = skb_realloc_headroom(sk_tmp, dev->hard_header_len); 3291da177e4SLinus Torvalds kfree_skb(sk_tmp); 3301da177e4SLinus Torvalds if (skb == NULL) { 3317bd38d77SPatrick McHardy struct net_device_stats *stats = &vdev->stats; 3321da177e4SLinus Torvalds stats->tx_dropped++; 3331da177e4SLinus Torvalds return -ENOMEM; 3341da177e4SLinus Torvalds } 3359dfebcc6SPatrick McHardy vlan_dev_info(vdev)->cnt_inc_headroom_on_tx++; 3362029cc2cSPatrick McHardy pr_debug("%s: %s: had to grow skb\n", __FUNCTION__, vdev->name); 3371da177e4SLinus Torvalds } 3381da177e4SLinus Torvalds 3391da177e4SLinus Torvalds if (build_vlan_header) { 3401da177e4SLinus Torvalds /* Now make the underlying real hard header */ 3410c4e8581SStephen Hemminger rc = dev_hard_header(skb, dev, ETH_P_8021Q, daddr, saddr, 3420c4e8581SStephen Hemminger len + VLAN_HLEN); 3430c4e8581SStephen Hemminger if (rc > 0) 3441da177e4SLinus Torvalds rc += VLAN_HLEN; 3450c4e8581SStephen Hemminger else if (rc < 0) 3461da177e4SLinus Torvalds rc -= VLAN_HLEN; 3470c4e8581SStephen Hemminger } else 3482029cc2cSPatrick McHardy /* If here, then we'll just make a normal looking ethernet 3492029cc2cSPatrick McHardy * frame, but, the hard_start_xmit method will insert the tag 3502029cc2cSPatrick McHardy * (it has to be able to do this for bridged and other skbs 3512029cc2cSPatrick McHardy * that don't come down the protocol stack in an orderly manner. 3521da177e4SLinus Torvalds */ 3530c4e8581SStephen Hemminger rc = dev_hard_header(skb, dev, type, daddr, saddr, len); 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds return rc; 3561da177e4SLinus Torvalds } 3571da177e4SLinus Torvalds 358ef3eb3e5SPatrick McHardy static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 3591da177e4SLinus Torvalds { 3607bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 3611da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 3641da177e4SLinus Torvalds * 3651da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 3661da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 3671da177e4SLinus Torvalds */ 3681da177e4SLinus Torvalds 3696ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 3709dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { 3711da177e4SLinus Torvalds int orig_headroom = skb_headroom(skb); 3721da177e4SLinus Torvalds unsigned short veth_TCI; 3731da177e4SLinus Torvalds 3741da177e4SLinus Torvalds /* This is not a VLAN frame...but we can fix that! */ 3759dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_encap_on_xmit++; 3761da177e4SLinus Torvalds 37740f98e1aSPatrick McHardy pr_debug("%s: proto to encap: 0x%hx\n", 3781da177e4SLinus Torvalds __FUNCTION__, htons(veth->h_vlan_proto)); 3791da177e4SLinus Torvalds /* Construct the second two bytes. This field looks something 3801da177e4SLinus Torvalds * like: 3811da177e4SLinus Torvalds * usr_priority: 3 bits (high bits) 3821da177e4SLinus Torvalds * CFI 1 bit 3831da177e4SLinus Torvalds * VLAN ID 12 bits (low bits) 3841da177e4SLinus Torvalds */ 3859dfebcc6SPatrick McHardy veth_TCI = vlan_dev_info(dev)->vlan_id; 3861da177e4SLinus Torvalds veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); 3871da177e4SLinus Torvalds 3881da177e4SLinus Torvalds skb = __vlan_put_tag(skb, veth_TCI); 3891da177e4SLinus Torvalds if (!skb) { 3901da177e4SLinus Torvalds stats->tx_dropped++; 3911da177e4SLinus Torvalds return 0; 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds 3942029cc2cSPatrick McHardy if (orig_headroom < VLAN_HLEN) 3959dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; 3961da177e4SLinus Torvalds } 3971da177e4SLinus Torvalds 39840f98e1aSPatrick McHardy pr_debug("%s: about to send skb: %p to dev: %s\n", 3991da177e4SLinus Torvalds __FUNCTION__, skb, skb->dev->name); 40040f98e1aSPatrick McHardy pr_debug(" " MAC_FMT " " MAC_FMT " %4hx %4hx %4hx\n", 40140f98e1aSPatrick McHardy veth->h_dest[0], veth->h_dest[1], veth->h_dest[2], 40240f98e1aSPatrick McHardy veth->h_dest[3], veth->h_dest[4], veth->h_dest[5], 40340f98e1aSPatrick McHardy veth->h_source[0], veth->h_source[1], veth->h_source[2], 40440f98e1aSPatrick McHardy veth->h_source[3], veth->h_source[4], veth->h_source[5], 40540f98e1aSPatrick McHardy veth->h_vlan_proto, veth->h_vlan_TCI, 40640f98e1aSPatrick McHardy veth->h_vlan_encapsulated_proto); 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds stats->tx_packets++; /* for statics only */ 4091da177e4SLinus Torvalds stats->tx_bytes += skb->len; 4101da177e4SLinus Torvalds 4119dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 4121da177e4SLinus Torvalds dev_queue_xmit(skb); 4131da177e4SLinus Torvalds 4141da177e4SLinus Torvalds return 0; 4151da177e4SLinus Torvalds } 4161da177e4SLinus Torvalds 417ef3eb3e5SPatrick McHardy static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, 418ef3eb3e5SPatrick McHardy struct net_device *dev) 4191da177e4SLinus Torvalds { 4207bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 4211da177e4SLinus Torvalds unsigned short veth_TCI; 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds /* Construct the second two bytes. This field looks something 4241da177e4SLinus Torvalds * like: 4251da177e4SLinus Torvalds * usr_priority: 3 bits (high bits) 4261da177e4SLinus Torvalds * CFI 1 bit 4271da177e4SLinus Torvalds * VLAN ID 12 bits (low bits) 4281da177e4SLinus Torvalds */ 4299dfebcc6SPatrick McHardy veth_TCI = vlan_dev_info(dev)->vlan_id; 4301da177e4SLinus Torvalds veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); 4311da177e4SLinus Torvalds skb = __vlan_hwaccel_put_tag(skb, veth_TCI); 4321da177e4SLinus Torvalds 4331da177e4SLinus Torvalds stats->tx_packets++; 4341da177e4SLinus Torvalds stats->tx_bytes += skb->len; 4351da177e4SLinus Torvalds 4369dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 4371da177e4SLinus Torvalds dev_queue_xmit(skb); 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds return 0; 4401da177e4SLinus Torvalds } 4411da177e4SLinus Torvalds 442ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 4431da177e4SLinus Torvalds { 4441da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 4451da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 4461da177e4SLinus Torvalds */ 4479dfebcc6SPatrick McHardy if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) 4481da177e4SLinus Torvalds return -ERANGE; 4491da177e4SLinus Torvalds 4501da177e4SLinus Torvalds dev->mtu = new_mtu; 4511da177e4SLinus Torvalds 4521da177e4SLinus Torvalds return 0; 4531da177e4SLinus Torvalds } 4541da177e4SLinus Torvalds 455c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 456c17d8874SPatrick McHardy u32 skb_prio, short vlan_prio) 4571da177e4SLinus Torvalds { 4589dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 459b020cb48SPatrick McHardy 460b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 461b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 462b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 463b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 464b020cb48SPatrick McHardy 465b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 4661da177e4SLinus Torvalds } 4671da177e4SLinus Torvalds 468c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 469c17d8874SPatrick McHardy u32 skb_prio, short vlan_prio) 4701da177e4SLinus Torvalds { 4719dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4721da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 4731da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 474b020cb48SPatrick McHardy u32 vlan_qos = (vlan_prio << 13) & 0xE000; 4751da177e4SLinus Torvalds 4761da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 477b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4781da177e4SLinus Torvalds while (mp) { 4791da177e4SLinus Torvalds if (mp->priority == skb_prio) { 480b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 481b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 482b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 483b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 484b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 4851da177e4SLinus Torvalds return 0; 4861da177e4SLinus Torvalds } 4871da177e4SLinus Torvalds mp = mp->next; 4881da177e4SLinus Torvalds } 4891da177e4SLinus Torvalds 4901da177e4SLinus Torvalds /* Create a new mapping then. */ 491b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4921da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 493c17d8874SPatrick McHardy if (!np) 494c17d8874SPatrick McHardy return -ENOBUFS; 495c17d8874SPatrick McHardy 4961da177e4SLinus Torvalds np->next = mp; 4971da177e4SLinus Torvalds np->priority = skb_prio; 498b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 499b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 500b020cb48SPatrick McHardy if (vlan_qos) 501b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 5021da177e4SLinus Torvalds return 0; 5031da177e4SLinus Torvalds } 5041da177e4SLinus Torvalds 505a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 506c17d8874SPatrick McHardy int vlan_dev_set_vlan_flag(const struct net_device *dev, 507c17d8874SPatrick McHardy u32 flag, short flag_val) 5081da177e4SLinus Torvalds { 5091da177e4SLinus Torvalds /* verify flag is supported */ 510a4bf3af4SPatrick McHardy if (flag == VLAN_FLAG_REORDER_HDR) { 5112029cc2cSPatrick McHardy if (flag_val) 5129dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags |= VLAN_FLAG_REORDER_HDR; 5132029cc2cSPatrick McHardy else 5149dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags &= ~VLAN_FLAG_REORDER_HDR; 5151da177e4SLinus Torvalds return 0; 5161da177e4SLinus Torvalds } 5171da177e4SLinus Torvalds return -EINVAL; 5181da177e4SLinus Torvalds } 5191da177e4SLinus Torvalds 520c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 5211da177e4SLinus Torvalds { 5229dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 5231da177e4SLinus Torvalds } 5241da177e4SLinus Torvalds 525c17d8874SPatrick McHardy void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result) 5261da177e4SLinus Torvalds { 5279dfebcc6SPatrick McHardy *result = vlan_dev_info(dev)->vlan_id; 5281da177e4SLinus Torvalds } 5291da177e4SLinus Torvalds 530ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 5311da177e4SLinus Torvalds { 5329dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 5338c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 5348c979c26SPatrick McHardy int err; 5358c979c26SPatrick McHardy 5368c979c26SPatrick McHardy if (!(real_dev->flags & IFF_UP)) 5371da177e4SLinus Torvalds return -ENETDOWN; 5381da177e4SLinus Torvalds 5398c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 5408c979c26SPatrick McHardy err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN); 5418c979c26SPatrick McHardy if (err < 0) 5428c979c26SPatrick McHardy return err; 5438c979c26SPatrick McHardy } 5448c979c26SPatrick McHardy memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 5458c979c26SPatrick McHardy 5466c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5476c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, 1); 5486c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5496c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, 1); 5506c78dcbdSPatrick McHardy 5511da177e4SLinus Torvalds return 0; 5521da177e4SLinus Torvalds } 5531da177e4SLinus Torvalds 554ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 5551da177e4SLinus Torvalds { 5569dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 5578c979c26SPatrick McHardy 55856addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 5596c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5606c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 5616c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5626c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 5636c78dcbdSPatrick McHardy 5648c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 5658c979c26SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len); 5668c979c26SPatrick McHardy 5671da177e4SLinus Torvalds return 0; 5681da177e4SLinus Torvalds } 5691da177e4SLinus Torvalds 570ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 57139aaac11SPatrick McHardy { 5729dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 57339aaac11SPatrick McHardy struct sockaddr *addr = p; 57439aaac11SPatrick McHardy int err; 57539aaac11SPatrick McHardy 57639aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 57739aaac11SPatrick McHardy return -EADDRNOTAVAIL; 57839aaac11SPatrick McHardy 57939aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 58039aaac11SPatrick McHardy goto out; 58139aaac11SPatrick McHardy 58239aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 58339aaac11SPatrick McHardy err = dev_unicast_add(real_dev, addr->sa_data, ETH_ALEN); 58439aaac11SPatrick McHardy if (err < 0) 58539aaac11SPatrick McHardy return err; 58639aaac11SPatrick McHardy } 58739aaac11SPatrick McHardy 58839aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 58939aaac11SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN); 59039aaac11SPatrick McHardy 59139aaac11SPatrick McHardy out: 59239aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 59339aaac11SPatrick McHardy return 0; 59439aaac11SPatrick McHardy } 59539aaac11SPatrick McHardy 596ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5971da177e4SLinus Torvalds { 5989dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 5991da177e4SLinus Torvalds struct ifreq ifrr; 6001da177e4SLinus Torvalds int err = -EOPNOTSUPP; 6011da177e4SLinus Torvalds 6021da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 6031da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds switch (cmd) { 6061da177e4SLinus Torvalds case SIOCGMIIPHY: 6071da177e4SLinus Torvalds case SIOCGMIIREG: 6081da177e4SLinus Torvalds case SIOCSMIIREG: 6091da177e4SLinus Torvalds if (real_dev->do_ioctl && netif_device_present(real_dev)) 6101da177e4SLinus Torvalds err = real_dev->do_ioctl(real_dev, &ifrr, cmd); 6111da177e4SLinus Torvalds break; 6121da177e4SLinus Torvalds } 6131da177e4SLinus Torvalds 6141da177e4SLinus Torvalds if (!err) 6151da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds return err; 6181da177e4SLinus Torvalds } 6191da177e4SLinus Torvalds 620ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 6216c78dcbdSPatrick McHardy { 6229dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6236c78dcbdSPatrick McHardy 6246c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 6256c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 6266c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 6276c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 6286c78dcbdSPatrick McHardy } 6296c78dcbdSPatrick McHardy 630ef3eb3e5SPatrick McHardy static void vlan_dev_set_multicast_list(struct net_device *vlan_dev) 6311da177e4SLinus Torvalds { 6329dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 6331da177e4SLinus Torvalds } 634ef3eb3e5SPatrick McHardy 635ef3eb3e5SPatrick McHardy /* 636ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 637ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 638ef3eb3e5SPatrick McHardy * separate class since they always nest. 639ef3eb3e5SPatrick McHardy */ 640ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 641ef3eb3e5SPatrick McHardy 642ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 643ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 644ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 645ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 646ef3eb3e5SPatrick McHardy }; 647ef3eb3e5SPatrick McHardy 648ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 649ef3eb3e5SPatrick McHardy { 6509dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 651ef3eb3e5SPatrick McHardy int subclass = 0; 652ef3eb3e5SPatrick McHardy 653ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 654ef3eb3e5SPatrick McHardy dev->flags = real_dev->flags & ~IFF_UP; 655ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 656ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 657ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 658ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 659ef3eb3e5SPatrick McHardy 660ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 661ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 662ef3eb3e5SPatrick McHardy 663ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 664ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 665ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 666ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 667ef3eb3e5SPatrick McHardy 668ef3eb3e5SPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_TX) { 669ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 670ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 671ef3eb3e5SPatrick McHardy dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit; 672ef3eb3e5SPatrick McHardy } else { 673ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 674ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 675ef3eb3e5SPatrick McHardy dev->hard_start_xmit = vlan_dev_hard_start_xmit; 676ef3eb3e5SPatrick McHardy } 677ef3eb3e5SPatrick McHardy 678ef3eb3e5SPatrick McHardy if (real_dev->priv_flags & IFF_802_1Q_VLAN) 679ef3eb3e5SPatrick McHardy subclass = 1; 680ef3eb3e5SPatrick McHardy 681ef3eb3e5SPatrick McHardy lockdep_set_class_and_subclass(&dev->_xmit_lock, 682ef3eb3e5SPatrick McHardy &vlan_netdev_xmit_lock_key, subclass); 683ef3eb3e5SPatrick McHardy return 0; 684ef3eb3e5SPatrick McHardy } 685ef3eb3e5SPatrick McHardy 686ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 687ef3eb3e5SPatrick McHardy { 688ef3eb3e5SPatrick McHardy ether_setup(dev); 689ef3eb3e5SPatrick McHardy 690ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 691ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 692ef3eb3e5SPatrick McHardy 693ef3eb3e5SPatrick McHardy dev->change_mtu = vlan_dev_change_mtu; 694ef3eb3e5SPatrick McHardy dev->init = vlan_dev_init; 695ef3eb3e5SPatrick McHardy dev->open = vlan_dev_open; 696ef3eb3e5SPatrick McHardy dev->stop = vlan_dev_stop; 697ef3eb3e5SPatrick McHardy dev->set_mac_address = vlan_dev_set_mac_address; 698ef3eb3e5SPatrick McHardy dev->set_multicast_list = vlan_dev_set_multicast_list; 699ef3eb3e5SPatrick McHardy dev->change_rx_flags = vlan_dev_change_rx_flags; 700ef3eb3e5SPatrick McHardy dev->do_ioctl = vlan_dev_ioctl; 701ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 702ef3eb3e5SPatrick McHardy 703ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 704ef3eb3e5SPatrick McHardy } 705