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> 3175b8846aSPatrick McHardy #include <linux/ethtool.h> 321da177e4SLinus Torvalds #include <net/datalink.h> 331da177e4SLinus Torvalds #include <net/p8022.h> 341da177e4SLinus Torvalds #include <net/arp.h> 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds #include "vlan.h" 371da177e4SLinus Torvalds #include "vlanproc.h" 381da177e4SLinus Torvalds #include <linux/if_vlan.h> 391da177e4SLinus Torvalds #include <net/ip.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds /* 421da177e4SLinus Torvalds * Rebuild the Ethernet MAC header. This is called after an ARP 431da177e4SLinus Torvalds * (or in future other address resolution) has completed on this 441da177e4SLinus Torvalds * sk_buff. We now let ARP fill in the other fields. 451da177e4SLinus Torvalds * 461da177e4SLinus Torvalds * This routine CANNOT use cached dst->neigh! 471da177e4SLinus Torvalds * Really, it is used only when dst->neigh is wrong. 481da177e4SLinus Torvalds * 491da177e4SLinus Torvalds * TODO: This needs a checkup, I'm ignorant here. --BLG 501da177e4SLinus Torvalds */ 51ef3eb3e5SPatrick McHardy static int vlan_dev_rebuild_header(struct sk_buff *skb) 521da177e4SLinus Torvalds { 531da177e4SLinus Torvalds struct net_device *dev = skb->dev; 541da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds switch (veth->h_vlan_encapsulated_proto) { 571da177e4SLinus Torvalds #ifdef CONFIG_INET 581da177e4SLinus Torvalds case __constant_htons(ETH_P_IP): 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds /* TODO: Confirm this will work with VLAN headers... */ 611da177e4SLinus Torvalds return arp_find(veth->h_dest, skb); 621da177e4SLinus Torvalds #endif 631da177e4SLinus Torvalds default: 6440f98e1aSPatrick McHardy pr_debug("%s: unable to resolve type %X addresses.\n", 65d136fe72SAlexey Dobriyan dev->name, ntohs(veth->h_vlan_encapsulated_proto)); 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); 681da177e4SLinus Torvalds break; 693ff50b79SStephen Hemminger } 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds return 0; 721da177e4SLinus Torvalds } 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) 751da177e4SLinus Torvalds { 769dfebcc6SPatrick McHardy if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { 7711a100f8SPatrick McHardy if (skb_cow(skb, skb_headroom(skb)) < 0) 7811a100f8SPatrick McHardy skb = NULL; 791da177e4SLinus Torvalds if (skb) { 801da177e4SLinus Torvalds /* Lifted from Gleb's VLAN code... */ 811da177e4SLinus Torvalds memmove(skb->data - ETH_HLEN, 821da177e4SLinus Torvalds skb->data - VLAN_ETH_HLEN, 12); 83b0e380b1SArnaldo Carvalho de Melo skb->mac_header += VLAN_HLEN; 841da177e4SLinus Torvalds } 851da177e4SLinus Torvalds } 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds return skb; 881da177e4SLinus Torvalds } 891da177e4SLinus Torvalds 9091b4f954SPavel Emelyanov static inline void vlan_set_encap_proto(struct sk_buff *skb, 9191b4f954SPavel Emelyanov struct vlan_hdr *vhdr) 9291b4f954SPavel Emelyanov { 9391b4f954SPavel Emelyanov __be16 proto; 9491b4f954SPavel Emelyanov unsigned char *rawp; 9591b4f954SPavel Emelyanov 9691b4f954SPavel Emelyanov /* 9791b4f954SPavel Emelyanov * Was a VLAN packet, grab the encapsulated protocol, which the layer 9891b4f954SPavel Emelyanov * three protocols care about. 9991b4f954SPavel Emelyanov */ 10091b4f954SPavel Emelyanov 10191b4f954SPavel Emelyanov proto = vhdr->h_vlan_encapsulated_proto; 10291b4f954SPavel Emelyanov if (ntohs(proto) >= 1536) { 10391b4f954SPavel Emelyanov skb->protocol = proto; 10491b4f954SPavel Emelyanov return; 10591b4f954SPavel Emelyanov } 10691b4f954SPavel Emelyanov 10791b4f954SPavel Emelyanov rawp = skb->data; 10891b4f954SPavel Emelyanov if (*(unsigned short *)rawp == 0xFFFF) 10991b4f954SPavel Emelyanov /* 11091b4f954SPavel Emelyanov * This is a magic hack to spot IPX packets. Older Novell 11191b4f954SPavel Emelyanov * breaks the protocol design and runs IPX over 802.3 without 11291b4f954SPavel Emelyanov * an 802.2 LLC layer. We look for FFFF which isn't a used 11391b4f954SPavel Emelyanov * 802.2 SSAP/DSAP. This won't work for fault tolerant netware 11491b4f954SPavel Emelyanov * but does for the rest. 11591b4f954SPavel Emelyanov */ 11691b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_3); 11791b4f954SPavel Emelyanov else 11891b4f954SPavel Emelyanov /* 11991b4f954SPavel Emelyanov * Real 802.2 LLC 12091b4f954SPavel Emelyanov */ 12191b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_2); 12291b4f954SPavel Emelyanov } 12391b4f954SPavel Emelyanov 1241da177e4SLinus Torvalds /* 1251da177e4SLinus Torvalds * Determine the packet's protocol ID. The rule here is that we 1261da177e4SLinus Torvalds * assume 802.3 if the type field is short enough to be a length. 1271da177e4SLinus Torvalds * This is normal practice and works for any 'now in use' protocol. 1281da177e4SLinus Torvalds * 1291da177e4SLinus Torvalds * Also, at this point we assume that we ARE dealing exclusively with 1301da177e4SLinus Torvalds * VLAN packets, or packets that should be made into VLAN packets based 1311da177e4SLinus Torvalds * on a default VLAN ID. 1321da177e4SLinus Torvalds * 1331da177e4SLinus Torvalds * NOTE: Should be similar to ethernet/eth.c. 1341da177e4SLinus Torvalds * 1351da177e4SLinus Torvalds * SANITY NOTE: This method is called when a packet is moving up the stack 1361da177e4SLinus Torvalds * towards userland. To get here, it would have already passed 1371da177e4SLinus Torvalds * through the ethernet/eth.c eth_type_trans() method. 1381da177e4SLinus Torvalds * SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be 1391da177e4SLinus Torvalds * stored UNALIGNED in the memory. RISC systems don't like 1401da177e4SLinus Torvalds * such cases very much... 1412029cc2cSPatrick McHardy * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be 1422029cc2cSPatrick McHardy * aligned, so there doesn't need to be any of the unaligned 1432029cc2cSPatrick McHardy * stuff. It has been commented out now... --Ben 1441da177e4SLinus Torvalds * 1451da177e4SLinus Torvalds */ 1461da177e4SLinus Torvalds int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, 147f2ccd8faSDavid S. Miller struct packet_type *ptype, struct net_device *orig_dev) 1481da177e4SLinus Torvalds { 149e7c243c9SEvgeniy Polyakov struct vlan_hdr *vhdr; 1501da177e4SLinus Torvalds struct net_device_stats *stats; 1519bb8582eSPatrick McHardy u16 vlan_id; 1529bb8582eSPatrick McHardy u16 vlan_tci; 1531da177e4SLinus Torvalds 1542029cc2cSPatrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 1552029cc2cSPatrick McHardy if (skb == NULL) 15631ffdbcbSPatrick McHardy goto err_free; 157e7c243c9SEvgeniy Polyakov 15831ffdbcbSPatrick McHardy if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) 15931ffdbcbSPatrick McHardy goto err_free; 160e7c243c9SEvgeniy Polyakov 16131ffdbcbSPatrick McHardy vhdr = (struct vlan_hdr *)skb->data; 1629bb8582eSPatrick McHardy vlan_tci = ntohs(vhdr->h_vlan_TCI); 1639bb8582eSPatrick McHardy vlan_id = vlan_tci & VLAN_VID_MASK; 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds rcu_read_lock(); 1669bb8582eSPatrick McHardy skb->dev = __find_vlan_dev(dev, vlan_id); 1671da177e4SLinus Torvalds if (!skb->dev) { 1682029cc2cSPatrick McHardy pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n", 1699bb8582eSPatrick McHardy __func__, vlan_id, dev->name); 17031ffdbcbSPatrick McHardy goto err_unlock; 1711da177e4SLinus Torvalds } 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds skb->dev->last_rx = jiffies; 1741da177e4SLinus Torvalds 1757bd38d77SPatrick McHardy stats = &skb->dev->stats; 1761da177e4SLinus Torvalds stats->rx_packets++; 1771da177e4SLinus Torvalds stats->rx_bytes += skb->len; 1781da177e4SLinus Torvalds 179cbb042f9SHerbert Xu skb_pull_rcsum(skb, VLAN_HLEN); 180a388442cSStephen Hemminger 1819bb8582eSPatrick McHardy skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci); 1821da177e4SLinus Torvalds 18340f98e1aSPatrick McHardy pr_debug("%s: priority: %u for TCI: %hu\n", 1849bb8582eSPatrick McHardy __func__, skb->priority, vlan_tci); 1851da177e4SLinus Torvalds 1861da177e4SLinus Torvalds switch (skb->pkt_type) { 1871da177e4SLinus Torvalds case PACKET_BROADCAST: /* Yeah, stats collect these together.. */ 1882029cc2cSPatrick McHardy /* stats->broadcast ++; // no such counter :-( */ 1891da177e4SLinus Torvalds break; 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds case PACKET_MULTICAST: 1921da177e4SLinus Torvalds stats->multicast++; 1931da177e4SLinus Torvalds break; 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds case PACKET_OTHERHOST: 1961da177e4SLinus Torvalds /* Our lower layer thinks this is not local, let's make sure. 1972029cc2cSPatrick McHardy * This allows the VLAN to have a different MAC than the 1982029cc2cSPatrick McHardy * underlying device, and still route correctly. 1991da177e4SLinus Torvalds */ 2002029cc2cSPatrick McHardy if (!compare_ether_addr(eth_hdr(skb)->h_dest, 2012029cc2cSPatrick McHardy skb->dev->dev_addr)) 2021da177e4SLinus Torvalds skb->pkt_type = PACKET_HOST; 2031da177e4SLinus Torvalds break; 2041da177e4SLinus Torvalds default: 2051da177e4SLinus Torvalds break; 2063ff50b79SStephen Hemminger } 2071da177e4SLinus Torvalds 20891b4f954SPavel Emelyanov vlan_set_encap_proto(skb, vhdr); 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds skb = vlan_check_reorder_header(skb); 21131ffdbcbSPatrick McHardy if (!skb) { 2121da177e4SLinus Torvalds stats->rx_errors++; 21331ffdbcbSPatrick McHardy goto err_unlock; 2141da177e4SLinus Torvalds } 21531ffdbcbSPatrick McHardy 21631ffdbcbSPatrick McHardy netif_rx(skb); 2171da177e4SLinus Torvalds rcu_read_unlock(); 21831ffdbcbSPatrick McHardy return NET_RX_SUCCESS; 21931ffdbcbSPatrick McHardy 22031ffdbcbSPatrick McHardy err_unlock: 22131ffdbcbSPatrick McHardy rcu_read_unlock(); 22231ffdbcbSPatrick McHardy err_free: 22331ffdbcbSPatrick McHardy kfree_skb(skb); 22431ffdbcbSPatrick McHardy return NET_RX_DROP; 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds 2279bb8582eSPatrick McHardy static inline u16 2282029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 2291da177e4SLinus Torvalds { 2302029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 2311da177e4SLinus Torvalds 2322029cc2cSPatrick McHardy mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; 2331da177e4SLinus Torvalds while (mp) { 2341da177e4SLinus Torvalds if (mp->priority == skb->priority) { 2352029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 2362029cc2cSPatrick McHardy * to mask correctly with the 2372029cc2cSPatrick McHardy * VLAN's TCI */ 2381da177e4SLinus Torvalds } 2391da177e4SLinus Torvalds mp = mp->next; 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds return 0; 2421da177e4SLinus Torvalds } 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds /* 2451da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 2461da177e4SLinus Torvalds * 2471da177e4SLinus Torvalds * saddr=NULL means use device source address 2481da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 2491da177e4SLinus Torvalds * 2501da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 2511da177e4SLinus Torvalds * physical devices. 2521da177e4SLinus Torvalds */ 253ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 2543b04dddeSStephen Hemminger unsigned short type, 255ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 256ef3eb3e5SPatrick McHardy unsigned int len) 2571da177e4SLinus Torvalds { 2581da177e4SLinus Torvalds struct vlan_hdr *vhdr; 2591349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 2609bb8582eSPatrick McHardy u16 vlan_tci = 0; 2611349fe9aSPatrick McHardy int rc; 2621da177e4SLinus Torvalds 26311a100f8SPatrick McHardy if (WARN_ON(skb_headroom(skb) < dev->hard_header_len)) 26411a100f8SPatrick McHardy return -ENOSPC; 26511a100f8SPatrick McHardy 2661349fe9aSPatrick McHardy if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { 2671da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 2681da177e4SLinus Torvalds 2699bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 2709bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 2719bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds /* 2742029cc2cSPatrick McHardy * Set the protocol type. For a packet of type ETH_P_802_3 we 2752029cc2cSPatrick McHardy * put the length in here instead. It is up to the 802.2 2762029cc2cSPatrick McHardy * layer to carry protocol information. 2771da177e4SLinus Torvalds */ 2782029cc2cSPatrick McHardy if (type != ETH_P_802_3) 2791da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 2802029cc2cSPatrick McHardy else 2811da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 282279e172aSJerome Borsboom 283279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 2841349fe9aSPatrick McHardy type = ETH_P_8021Q; 2851349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 2861da177e4SLinus Torvalds } 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 2891da177e4SLinus Torvalds if (saddr == NULL) 2901da177e4SLinus Torvalds saddr = dev->dev_addr; 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds /* Now make the underlying real hard header */ 2931349fe9aSPatrick McHardy dev = vlan_dev_info(dev)->real_dev; 2941349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 2950c4e8581SStephen Hemminger if (rc > 0) 2961349fe9aSPatrick McHardy rc += vhdrlen; 2971da177e4SLinus Torvalds return rc; 2981da177e4SLinus Torvalds } 2991da177e4SLinus Torvalds 300ef3eb3e5SPatrick McHardy static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 3011da177e4SLinus Torvalds { 3027bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 3031da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 30455b01e86SDavid S. Miller 3051da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 3061da177e4SLinus Torvalds * 3071da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 3081da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 3091da177e4SLinus Torvalds */ 3106ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 3119dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { 312d80aa31bSPatrick McHardy unsigned int orig_headroom = skb_headroom(skb); 3139bb8582eSPatrick McHardy u16 vlan_tci; 3141da177e4SLinus Torvalds 3159dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_encap_on_xmit++; 3161da177e4SLinus Torvalds 3179bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3189bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3199bb8582eSPatrick McHardy skb = __vlan_put_tag(skb, vlan_tci); 3201da177e4SLinus Torvalds if (!skb) { 3211da177e4SLinus Torvalds stats->tx_dropped++; 322d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3231da177e4SLinus Torvalds } 3241da177e4SLinus Torvalds 3252029cc2cSPatrick McHardy if (orig_headroom < VLAN_HLEN) 3269dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; 3271da177e4SLinus Torvalds } 3281da177e4SLinus Torvalds 329d80aa31bSPatrick McHardy stats->tx_packets++; 3301da177e4SLinus Torvalds stats->tx_bytes += skb->len; 3311da177e4SLinus Torvalds 3329dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3331da177e4SLinus Torvalds dev_queue_xmit(skb); 334d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3351da177e4SLinus Torvalds } 3361da177e4SLinus Torvalds 337ef3eb3e5SPatrick McHardy static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, 338ef3eb3e5SPatrick McHardy struct net_device *dev) 3391da177e4SLinus Torvalds { 3407bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 3419bb8582eSPatrick McHardy u16 vlan_tci; 3421da177e4SLinus Torvalds 3439bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3449bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3459bb8582eSPatrick McHardy skb = __vlan_hwaccel_put_tag(skb, vlan_tci); 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds stats->tx_packets++; 3481da177e4SLinus Torvalds stats->tx_bytes += skb->len; 3491da177e4SLinus Torvalds 3509dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3511da177e4SLinus Torvalds dev_queue_xmit(skb); 352d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3531da177e4SLinus Torvalds } 3541da177e4SLinus Torvalds 355ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 3561da177e4SLinus Torvalds { 3571da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 3581da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 3591da177e4SLinus Torvalds */ 3609dfebcc6SPatrick McHardy if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) 3611da177e4SLinus Torvalds return -ERANGE; 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds dev->mtu = new_mtu; 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds return 0; 3661da177e4SLinus Torvalds } 3671da177e4SLinus Torvalds 368c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 3699bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 3701da177e4SLinus Torvalds { 3719dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 372b020cb48SPatrick McHardy 373b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 374b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 375b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 376b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 377b020cb48SPatrick McHardy 378b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 3791da177e4SLinus Torvalds } 3801da177e4SLinus Torvalds 381c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 3829bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 3831da177e4SLinus Torvalds { 3849dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 3851da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 3861da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 387b020cb48SPatrick McHardy u32 vlan_qos = (vlan_prio << 13) & 0xE000; 3881da177e4SLinus Torvalds 3891da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 390b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 3911da177e4SLinus Torvalds while (mp) { 3921da177e4SLinus Torvalds if (mp->priority == skb_prio) { 393b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 394b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 395b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 396b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 397b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 3981da177e4SLinus Torvalds return 0; 3991da177e4SLinus Torvalds } 4001da177e4SLinus Torvalds mp = mp->next; 4011da177e4SLinus Torvalds } 4021da177e4SLinus Torvalds 4031da177e4SLinus Torvalds /* Create a new mapping then. */ 404b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4051da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 406c17d8874SPatrick McHardy if (!np) 407c17d8874SPatrick McHardy return -ENOBUFS; 408c17d8874SPatrick McHardy 4091da177e4SLinus Torvalds np->next = mp; 4101da177e4SLinus Torvalds np->priority = skb_prio; 411b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 412b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 413b020cb48SPatrick McHardy if (vlan_qos) 414b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 4151da177e4SLinus Torvalds return 0; 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 418a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 419b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 4201da177e4SLinus Torvalds { 421b3ce0325SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 422b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 423b3ce0325SPatrick McHardy 42470c03b49SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP)) 4251da177e4SLinus Torvalds return -EINVAL; 426b3ce0325SPatrick McHardy 427b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 42870c03b49SPatrick McHardy 42970c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 43070c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 43170c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 43270c03b49SPatrick McHardy else 43370c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 43470c03b49SPatrick McHardy } 435b3ce0325SPatrick McHardy return 0; 4361da177e4SLinus Torvalds } 4371da177e4SLinus Torvalds 438c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 4391da177e4SLinus Torvalds { 4409dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 4411da177e4SLinus Torvalds } 4421da177e4SLinus Torvalds 443ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 4441da177e4SLinus Torvalds { 4459dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4468c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 4478c979c26SPatrick McHardy int err; 4488c979c26SPatrick McHardy 4498c979c26SPatrick McHardy if (!(real_dev->flags & IFF_UP)) 4501da177e4SLinus Torvalds return -ENETDOWN; 4511da177e4SLinus Torvalds 4528c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 4538c979c26SPatrick McHardy err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN); 4548c979c26SPatrick McHardy if (err < 0) 45589146504SWang Chen goto out; 4568c979c26SPatrick McHardy } 4578c979c26SPatrick McHardy 45889146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 45989146504SWang Chen err = dev_set_allmulti(real_dev, 1); 46089146504SWang Chen if (err < 0) 46189146504SWang Chen goto del_unicast; 46289146504SWang Chen } 46389146504SWang Chen if (dev->flags & IFF_PROMISC) { 46489146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 46589146504SWang Chen if (err < 0) 46689146504SWang Chen goto clear_allmulti; 46789146504SWang Chen } 46889146504SWang Chen 46989146504SWang Chen memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 4706c78dcbdSPatrick McHardy 47170c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 47270c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 47370c03b49SPatrick McHardy 4741da177e4SLinus Torvalds return 0; 47589146504SWang Chen 47689146504SWang Chen clear_allmulti: 47789146504SWang Chen if (dev->flags & IFF_ALLMULTI) 47889146504SWang Chen dev_set_allmulti(real_dev, -1); 47989146504SWang Chen del_unicast: 48089146504SWang Chen if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 48189146504SWang Chen dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN); 48289146504SWang Chen out: 48389146504SWang Chen return err; 4841da177e4SLinus Torvalds } 4851da177e4SLinus Torvalds 486ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 4871da177e4SLinus Torvalds { 48870c03b49SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 48970c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 49070c03b49SPatrick McHardy 49170c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 49270c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 4938c979c26SPatrick McHardy 49456addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 495e83a2ea8SChris Leech dev_unicast_unsync(real_dev, dev); 4966c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 4976c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 4986c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 4996c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 5006c78dcbdSPatrick McHardy 5018c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 5028c979c26SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len); 5038c979c26SPatrick McHardy 5041da177e4SLinus Torvalds return 0; 5051da177e4SLinus Torvalds } 5061da177e4SLinus Torvalds 507ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 50839aaac11SPatrick McHardy { 5099dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 51039aaac11SPatrick McHardy struct sockaddr *addr = p; 51139aaac11SPatrick McHardy int err; 51239aaac11SPatrick McHardy 51339aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 51439aaac11SPatrick McHardy return -EADDRNOTAVAIL; 51539aaac11SPatrick McHardy 51639aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 51739aaac11SPatrick McHardy goto out; 51839aaac11SPatrick McHardy 51939aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 52039aaac11SPatrick McHardy err = dev_unicast_add(real_dev, addr->sa_data, ETH_ALEN); 52139aaac11SPatrick McHardy if (err < 0) 52239aaac11SPatrick McHardy return err; 52339aaac11SPatrick McHardy } 52439aaac11SPatrick McHardy 52539aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 52639aaac11SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN); 52739aaac11SPatrick McHardy 52839aaac11SPatrick McHardy out: 52939aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 53039aaac11SPatrick McHardy return 0; 53139aaac11SPatrick McHardy } 53239aaac11SPatrick McHardy 533ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5341da177e4SLinus Torvalds { 5359dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 5361da177e4SLinus Torvalds struct ifreq ifrr; 5371da177e4SLinus Torvalds int err = -EOPNOTSUPP; 5381da177e4SLinus Torvalds 5391da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 5401da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 5411da177e4SLinus Torvalds 5421da177e4SLinus Torvalds switch (cmd) { 5431da177e4SLinus Torvalds case SIOCGMIIPHY: 5441da177e4SLinus Torvalds case SIOCGMIIREG: 5451da177e4SLinus Torvalds case SIOCSMIIREG: 5461da177e4SLinus Torvalds if (real_dev->do_ioctl && netif_device_present(real_dev)) 5471da177e4SLinus Torvalds err = real_dev->do_ioctl(real_dev, &ifrr, cmd); 5481da177e4SLinus Torvalds break; 5491da177e4SLinus Torvalds } 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds if (!err) 5521da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 5531da177e4SLinus Torvalds 5541da177e4SLinus Torvalds return err; 5551da177e4SLinus Torvalds } 5561da177e4SLinus Torvalds 557ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 5586c78dcbdSPatrick McHardy { 5599dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 5606c78dcbdSPatrick McHardy 5616c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 5626c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 5636c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 5646c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 5656c78dcbdSPatrick McHardy } 5666c78dcbdSPatrick McHardy 567e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 5681da177e4SLinus Torvalds { 5699dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 570e83a2ea8SChris Leech dev_unicast_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 5711da177e4SLinus Torvalds } 572ef3eb3e5SPatrick McHardy 573ef3eb3e5SPatrick McHardy /* 574ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 575ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 576ef3eb3e5SPatrick McHardy * separate class since they always nest. 577ef3eb3e5SPatrick McHardy */ 578ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 579ef3eb3e5SPatrick McHardy 580c773e847SDavid S. Miller static void vlan_dev_set_lockdep_one(struct netdev_queue *txq, 581c773e847SDavid S. Miller int subclass) 582c773e847SDavid S. Miller { 583c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 584c773e847SDavid S. Miller &vlan_netdev_xmit_lock_key, subclass); 585c773e847SDavid S. Miller } 586c773e847SDavid S. Miller 587c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 588c773e847SDavid S. Miller { 589c773e847SDavid S. Miller vlan_dev_set_lockdep_one(&dev->tx_queue, subclass); 590c773e847SDavid S. Miller } 591c773e847SDavid S. Miller 592ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 593ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 594ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 595ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 596ef3eb3e5SPatrick McHardy }; 597ef3eb3e5SPatrick McHardy 598ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 599ef3eb3e5SPatrick McHardy { 6009dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 601ef3eb3e5SPatrick McHardy int subclass = 0; 602ef3eb3e5SPatrick McHardy 603ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 6040ed21b32SPatrick McHardy dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI); 605ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 606ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 607ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 608ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 609ef3eb3e5SPatrick McHardy 610289c79a4SPatrick McHardy dev->features |= real_dev->features & real_dev->vlan_features; 6115fb13570SPatrick McHardy 612ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 613ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 614ef3eb3e5SPatrick McHardy 615ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 616ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 617ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 618ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 619ef3eb3e5SPatrick McHardy 620ef3eb3e5SPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_TX) { 621ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 622ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 623ef3eb3e5SPatrick McHardy dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit; 624ef3eb3e5SPatrick McHardy } else { 625ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 626ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 627ef3eb3e5SPatrick McHardy dev->hard_start_xmit = vlan_dev_hard_start_xmit; 628ef3eb3e5SPatrick McHardy } 629ef3eb3e5SPatrick McHardy 63026a25239SJoonwoo Park if (is_vlan_dev(real_dev)) 631ef3eb3e5SPatrick McHardy subclass = 1; 632ef3eb3e5SPatrick McHardy 633c773e847SDavid S. Miller vlan_dev_set_lockdep_class(dev, subclass); 634ef3eb3e5SPatrick McHardy return 0; 635ef3eb3e5SPatrick McHardy } 636ef3eb3e5SPatrick McHardy 63723556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 63823556323SPavel Emelyanov { 63923556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 64023556323SPavel Emelyanov struct vlan_dev_info *vlan = vlan_dev_info(dev); 64123556323SPavel Emelyanov int i; 64223556323SPavel Emelyanov 64323556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 64423556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 64523556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 64623556323SPavel Emelyanov kfree(pm); 64723556323SPavel Emelyanov } 64823556323SPavel Emelyanov } 64923556323SPavel Emelyanov } 65023556323SPavel Emelyanov 65175b8846aSPatrick McHardy static u32 vlan_ethtool_get_rx_csum(struct net_device *dev) 65275b8846aSPatrick McHardy { 65375b8846aSPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 65475b8846aSPatrick McHardy struct net_device *real_dev = vlan->real_dev; 65575b8846aSPatrick McHardy 65675b8846aSPatrick McHardy if (real_dev->ethtool_ops == NULL || 65775b8846aSPatrick McHardy real_dev->ethtool_ops->get_rx_csum == NULL) 65875b8846aSPatrick McHardy return 0; 65975b8846aSPatrick McHardy return real_dev->ethtool_ops->get_rx_csum(real_dev); 66075b8846aSPatrick McHardy } 66175b8846aSPatrick McHardy 66219b9a4e2SPatrick McHardy static u32 vlan_ethtool_get_flags(struct net_device *dev) 66319b9a4e2SPatrick McHardy { 66419b9a4e2SPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 66519b9a4e2SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 66619b9a4e2SPatrick McHardy 66719b9a4e2SPatrick McHardy if (!(real_dev->features & NETIF_F_HW_VLAN_RX) || 66819b9a4e2SPatrick McHardy real_dev->ethtool_ops == NULL || 66919b9a4e2SPatrick McHardy real_dev->ethtool_ops->get_flags == NULL) 67019b9a4e2SPatrick McHardy return 0; 67119b9a4e2SPatrick McHardy return real_dev->ethtool_ops->get_flags(real_dev); 67219b9a4e2SPatrick McHardy } 67319b9a4e2SPatrick McHardy 67475b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 67575b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 67675b8846aSPatrick McHardy .get_rx_csum = vlan_ethtool_get_rx_csum, 67719b9a4e2SPatrick McHardy .get_flags = vlan_ethtool_get_flags, 67875b8846aSPatrick McHardy }; 67975b8846aSPatrick McHardy 680ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 681ef3eb3e5SPatrick McHardy { 682ef3eb3e5SPatrick McHardy ether_setup(dev); 683ef3eb3e5SPatrick McHardy 684ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 685ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 686ef3eb3e5SPatrick McHardy 687ef3eb3e5SPatrick McHardy dev->change_mtu = vlan_dev_change_mtu; 688ef3eb3e5SPatrick McHardy dev->init = vlan_dev_init; 68923556323SPavel Emelyanov dev->uninit = vlan_dev_uninit; 690ef3eb3e5SPatrick McHardy dev->open = vlan_dev_open; 691ef3eb3e5SPatrick McHardy dev->stop = vlan_dev_stop; 692ef3eb3e5SPatrick McHardy dev->set_mac_address = vlan_dev_set_mac_address; 693e83a2ea8SChris Leech dev->set_rx_mode = vlan_dev_set_rx_mode; 694e83a2ea8SChris Leech dev->set_multicast_list = vlan_dev_set_rx_mode; 695ef3eb3e5SPatrick McHardy dev->change_rx_flags = vlan_dev_change_rx_flags; 696ef3eb3e5SPatrick McHardy dev->do_ioctl = vlan_dev_ioctl; 697ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 69875b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 699ef3eb3e5SPatrick McHardy 700ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 701ef3eb3e5SPatrick McHardy } 702