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/skbuff.h> 251da177e4SLinus Torvalds #include <linux/netdevice.h> 261da177e4SLinus Torvalds #include <linux/etherdevice.h> 2775b8846aSPatrick McHardy #include <linux/ethtool.h> 281da177e4SLinus Torvalds #include <net/arp.h> 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds #include "vlan.h" 311da177e4SLinus Torvalds #include "vlanproc.h" 321da177e4SLinus Torvalds #include <linux/if_vlan.h> 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds /* 351da177e4SLinus Torvalds * Rebuild the Ethernet MAC header. This is called after an ARP 361da177e4SLinus Torvalds * (or in future other address resolution) has completed on this 371da177e4SLinus Torvalds * sk_buff. We now let ARP fill in the other fields. 381da177e4SLinus Torvalds * 391da177e4SLinus Torvalds * This routine CANNOT use cached dst->neigh! 401da177e4SLinus Torvalds * Really, it is used only when dst->neigh is wrong. 411da177e4SLinus Torvalds * 421da177e4SLinus Torvalds * TODO: This needs a checkup, I'm ignorant here. --BLG 431da177e4SLinus Torvalds */ 44ef3eb3e5SPatrick McHardy static int vlan_dev_rebuild_header(struct sk_buff *skb) 451da177e4SLinus Torvalds { 461da177e4SLinus Torvalds struct net_device *dev = skb->dev; 471da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds switch (veth->h_vlan_encapsulated_proto) { 501da177e4SLinus Torvalds #ifdef CONFIG_INET 5160678040SArnaldo Carvalho de Melo case htons(ETH_P_IP): 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds /* TODO: Confirm this will work with VLAN headers... */ 541da177e4SLinus Torvalds return arp_find(veth->h_dest, skb); 551da177e4SLinus Torvalds #endif 561da177e4SLinus Torvalds default: 5740f98e1aSPatrick McHardy pr_debug("%s: unable to resolve type %X addresses.\n", 58d136fe72SAlexey Dobriyan dev->name, ntohs(veth->h_vlan_encapsulated_proto)); 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); 611da177e4SLinus Torvalds break; 623ff50b79SStephen Hemminger } 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds return 0; 651da177e4SLinus Torvalds } 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) 681da177e4SLinus Torvalds { 699dfebcc6SPatrick McHardy if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { 7011a100f8SPatrick McHardy if (skb_cow(skb, skb_headroom(skb)) < 0) 7111a100f8SPatrick McHardy skb = NULL; 721da177e4SLinus Torvalds if (skb) { 731da177e4SLinus Torvalds /* Lifted from Gleb's VLAN code... */ 741da177e4SLinus Torvalds memmove(skb->data - ETH_HLEN, 751da177e4SLinus Torvalds skb->data - VLAN_ETH_HLEN, 12); 76b0e380b1SArnaldo Carvalho de Melo skb->mac_header += VLAN_HLEN; 771da177e4SLinus Torvalds } 781da177e4SLinus Torvalds } 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds return skb; 811da177e4SLinus Torvalds } 821da177e4SLinus Torvalds 8391b4f954SPavel Emelyanov static inline void vlan_set_encap_proto(struct sk_buff *skb, 8491b4f954SPavel Emelyanov struct vlan_hdr *vhdr) 8591b4f954SPavel Emelyanov { 8691b4f954SPavel Emelyanov __be16 proto; 8791b4f954SPavel Emelyanov unsigned char *rawp; 8891b4f954SPavel Emelyanov 8991b4f954SPavel Emelyanov /* 9091b4f954SPavel Emelyanov * Was a VLAN packet, grab the encapsulated protocol, which the layer 9191b4f954SPavel Emelyanov * three protocols care about. 9291b4f954SPavel Emelyanov */ 9391b4f954SPavel Emelyanov 9491b4f954SPavel Emelyanov proto = vhdr->h_vlan_encapsulated_proto; 9591b4f954SPavel Emelyanov if (ntohs(proto) >= 1536) { 9691b4f954SPavel Emelyanov skb->protocol = proto; 9791b4f954SPavel Emelyanov return; 9891b4f954SPavel Emelyanov } 9991b4f954SPavel Emelyanov 10091b4f954SPavel Emelyanov rawp = skb->data; 10191b4f954SPavel Emelyanov if (*(unsigned short *)rawp == 0xFFFF) 10291b4f954SPavel Emelyanov /* 10391b4f954SPavel Emelyanov * This is a magic hack to spot IPX packets. Older Novell 10491b4f954SPavel Emelyanov * breaks the protocol design and runs IPX over 802.3 without 10591b4f954SPavel Emelyanov * an 802.2 LLC layer. We look for FFFF which isn't a used 10691b4f954SPavel Emelyanov * 802.2 SSAP/DSAP. This won't work for fault tolerant netware 10791b4f954SPavel Emelyanov * but does for the rest. 10891b4f954SPavel Emelyanov */ 10991b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_3); 11091b4f954SPavel Emelyanov else 11191b4f954SPavel Emelyanov /* 11291b4f954SPavel Emelyanov * Real 802.2 LLC 11391b4f954SPavel Emelyanov */ 11491b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_2); 11591b4f954SPavel Emelyanov } 11691b4f954SPavel Emelyanov 1171da177e4SLinus Torvalds /* 1181da177e4SLinus Torvalds * Determine the packet's protocol ID. The rule here is that we 1191da177e4SLinus Torvalds * assume 802.3 if the type field is short enough to be a length. 1201da177e4SLinus Torvalds * This is normal practice and works for any 'now in use' protocol. 1211da177e4SLinus Torvalds * 1221da177e4SLinus Torvalds * Also, at this point we assume that we ARE dealing exclusively with 1231da177e4SLinus Torvalds * VLAN packets, or packets that should be made into VLAN packets based 1241da177e4SLinus Torvalds * on a default VLAN ID. 1251da177e4SLinus Torvalds * 1261da177e4SLinus Torvalds * NOTE: Should be similar to ethernet/eth.c. 1271da177e4SLinus Torvalds * 1281da177e4SLinus Torvalds * SANITY NOTE: This method is called when a packet is moving up the stack 1291da177e4SLinus Torvalds * towards userland. To get here, it would have already passed 1301da177e4SLinus Torvalds * through the ethernet/eth.c eth_type_trans() method. 1311da177e4SLinus Torvalds * SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be 1321da177e4SLinus Torvalds * stored UNALIGNED in the memory. RISC systems don't like 1331da177e4SLinus Torvalds * such cases very much... 1342029cc2cSPatrick McHardy * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be 1352029cc2cSPatrick McHardy * aligned, so there doesn't need to be any of the unaligned 1362029cc2cSPatrick McHardy * stuff. It has been commented out now... --Ben 1371da177e4SLinus Torvalds * 1381da177e4SLinus Torvalds */ 1391da177e4SLinus Torvalds int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, 140f2ccd8faSDavid S. Miller struct packet_type *ptype, struct net_device *orig_dev) 1411da177e4SLinus Torvalds { 142e7c243c9SEvgeniy Polyakov struct vlan_hdr *vhdr; 1431da177e4SLinus Torvalds struct net_device_stats *stats; 1449bb8582eSPatrick McHardy u16 vlan_id; 1459bb8582eSPatrick McHardy u16 vlan_tci; 1461da177e4SLinus Torvalds 1472029cc2cSPatrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 1482029cc2cSPatrick McHardy if (skb == NULL) 14931ffdbcbSPatrick McHardy goto err_free; 150e7c243c9SEvgeniy Polyakov 15131ffdbcbSPatrick McHardy if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) 15231ffdbcbSPatrick McHardy goto err_free; 153e7c243c9SEvgeniy Polyakov 15431ffdbcbSPatrick McHardy vhdr = (struct vlan_hdr *)skb->data; 1559bb8582eSPatrick McHardy vlan_tci = ntohs(vhdr->h_vlan_TCI); 1569bb8582eSPatrick McHardy vlan_id = vlan_tci & VLAN_VID_MASK; 1571da177e4SLinus Torvalds 1581da177e4SLinus Torvalds rcu_read_lock(); 1599bb8582eSPatrick McHardy skb->dev = __find_vlan_dev(dev, vlan_id); 1601da177e4SLinus Torvalds if (!skb->dev) { 1612029cc2cSPatrick McHardy pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n", 1629bb8582eSPatrick McHardy __func__, vlan_id, dev->name); 16331ffdbcbSPatrick McHardy goto err_unlock; 1641da177e4SLinus Torvalds } 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds skb->dev->last_rx = jiffies; 1671da177e4SLinus Torvalds 1687bd38d77SPatrick McHardy stats = &skb->dev->stats; 1691da177e4SLinus Torvalds stats->rx_packets++; 1701da177e4SLinus Torvalds stats->rx_bytes += skb->len; 1711da177e4SLinus Torvalds 172cbb042f9SHerbert Xu skb_pull_rcsum(skb, VLAN_HLEN); 173a388442cSStephen Hemminger 1749bb8582eSPatrick McHardy skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci); 1751da177e4SLinus Torvalds 17640f98e1aSPatrick McHardy pr_debug("%s: priority: %u for TCI: %hu\n", 1779bb8582eSPatrick McHardy __func__, skb->priority, vlan_tci); 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds switch (skb->pkt_type) { 1801da177e4SLinus Torvalds case PACKET_BROADCAST: /* Yeah, stats collect these together.. */ 1812029cc2cSPatrick McHardy /* stats->broadcast ++; // no such counter :-( */ 1821da177e4SLinus Torvalds break; 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds case PACKET_MULTICAST: 1851da177e4SLinus Torvalds stats->multicast++; 1861da177e4SLinus Torvalds break; 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds case PACKET_OTHERHOST: 1891da177e4SLinus Torvalds /* Our lower layer thinks this is not local, let's make sure. 1902029cc2cSPatrick McHardy * This allows the VLAN to have a different MAC than the 1912029cc2cSPatrick McHardy * underlying device, and still route correctly. 1921da177e4SLinus Torvalds */ 1932029cc2cSPatrick McHardy if (!compare_ether_addr(eth_hdr(skb)->h_dest, 1942029cc2cSPatrick McHardy skb->dev->dev_addr)) 1951da177e4SLinus Torvalds skb->pkt_type = PACKET_HOST; 1961da177e4SLinus Torvalds break; 1971da177e4SLinus Torvalds default: 1981da177e4SLinus Torvalds break; 1993ff50b79SStephen Hemminger } 2001da177e4SLinus Torvalds 20191b4f954SPavel Emelyanov vlan_set_encap_proto(skb, vhdr); 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds skb = vlan_check_reorder_header(skb); 20431ffdbcbSPatrick McHardy if (!skb) { 2051da177e4SLinus Torvalds stats->rx_errors++; 20631ffdbcbSPatrick McHardy goto err_unlock; 2071da177e4SLinus Torvalds } 20831ffdbcbSPatrick McHardy 20931ffdbcbSPatrick McHardy netif_rx(skb); 2101da177e4SLinus Torvalds rcu_read_unlock(); 21131ffdbcbSPatrick McHardy return NET_RX_SUCCESS; 21231ffdbcbSPatrick McHardy 21331ffdbcbSPatrick McHardy err_unlock: 21431ffdbcbSPatrick McHardy rcu_read_unlock(); 21531ffdbcbSPatrick McHardy err_free: 21631ffdbcbSPatrick McHardy kfree_skb(skb); 21731ffdbcbSPatrick McHardy return NET_RX_DROP; 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds 2209bb8582eSPatrick McHardy static inline u16 2212029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 2221da177e4SLinus Torvalds { 2232029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 2241da177e4SLinus Torvalds 2252029cc2cSPatrick McHardy mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; 2261da177e4SLinus Torvalds while (mp) { 2271da177e4SLinus Torvalds if (mp->priority == skb->priority) { 2282029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 2292029cc2cSPatrick McHardy * to mask correctly with the 2302029cc2cSPatrick McHardy * VLAN's TCI */ 2311da177e4SLinus Torvalds } 2321da177e4SLinus Torvalds mp = mp->next; 2331da177e4SLinus Torvalds } 2341da177e4SLinus Torvalds return 0; 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds /* 2381da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 2391da177e4SLinus Torvalds * 2401da177e4SLinus Torvalds * saddr=NULL means use device source address 2411da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 2421da177e4SLinus Torvalds * 2431da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 2441da177e4SLinus Torvalds * physical devices. 2451da177e4SLinus Torvalds */ 246ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 2473b04dddeSStephen Hemminger unsigned short type, 248ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 249ef3eb3e5SPatrick McHardy unsigned int len) 2501da177e4SLinus Torvalds { 2511da177e4SLinus Torvalds struct vlan_hdr *vhdr; 2521349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 2539bb8582eSPatrick McHardy u16 vlan_tci = 0; 2541349fe9aSPatrick McHardy int rc; 2551da177e4SLinus Torvalds 25611a100f8SPatrick McHardy if (WARN_ON(skb_headroom(skb) < dev->hard_header_len)) 25711a100f8SPatrick McHardy return -ENOSPC; 25811a100f8SPatrick McHardy 2591349fe9aSPatrick McHardy if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { 2601da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 2611da177e4SLinus Torvalds 2629bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 2639bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 2649bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds /* 2672029cc2cSPatrick McHardy * Set the protocol type. For a packet of type ETH_P_802_3 we 2682029cc2cSPatrick McHardy * put the length in here instead. It is up to the 802.2 2692029cc2cSPatrick McHardy * layer to carry protocol information. 2701da177e4SLinus Torvalds */ 2712029cc2cSPatrick McHardy if (type != ETH_P_802_3) 2721da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 2732029cc2cSPatrick McHardy else 2741da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 275279e172aSJerome Borsboom 276279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 2771349fe9aSPatrick McHardy type = ETH_P_8021Q; 2781349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 2791da177e4SLinus Torvalds } 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 2821da177e4SLinus Torvalds if (saddr == NULL) 2831da177e4SLinus Torvalds saddr = dev->dev_addr; 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds /* Now make the underlying real hard header */ 2861349fe9aSPatrick McHardy dev = vlan_dev_info(dev)->real_dev; 2871349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 2880c4e8581SStephen Hemminger if (rc > 0) 2891349fe9aSPatrick McHardy rc += vhdrlen; 2901da177e4SLinus Torvalds return rc; 2911da177e4SLinus Torvalds } 2921da177e4SLinus Torvalds 293ef3eb3e5SPatrick McHardy static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 2941da177e4SLinus Torvalds { 2957bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 2961da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 29755b01e86SDavid S. Miller 2981da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 2991da177e4SLinus Torvalds * 3001da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 3011da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 3021da177e4SLinus Torvalds */ 3036ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 3049dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { 305d80aa31bSPatrick McHardy unsigned int orig_headroom = skb_headroom(skb); 3069bb8582eSPatrick McHardy u16 vlan_tci; 3071da177e4SLinus Torvalds 3089dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_encap_on_xmit++; 3091da177e4SLinus Torvalds 3109bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3119bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3129bb8582eSPatrick McHardy skb = __vlan_put_tag(skb, vlan_tci); 3131da177e4SLinus Torvalds if (!skb) { 3141da177e4SLinus Torvalds stats->tx_dropped++; 315d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3161da177e4SLinus Torvalds } 3171da177e4SLinus Torvalds 3182029cc2cSPatrick McHardy if (orig_headroom < VLAN_HLEN) 3199dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; 3201da177e4SLinus Torvalds } 3211da177e4SLinus Torvalds 322d80aa31bSPatrick McHardy stats->tx_packets++; 3231da177e4SLinus Torvalds stats->tx_bytes += skb->len; 3241da177e4SLinus Torvalds 3259dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3261da177e4SLinus Torvalds dev_queue_xmit(skb); 327d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3281da177e4SLinus Torvalds } 3291da177e4SLinus Torvalds 330ef3eb3e5SPatrick McHardy static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, 331ef3eb3e5SPatrick McHardy struct net_device *dev) 3321da177e4SLinus Torvalds { 3337bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 3349bb8582eSPatrick McHardy u16 vlan_tci; 3351da177e4SLinus Torvalds 3369bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3379bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3389bb8582eSPatrick McHardy skb = __vlan_hwaccel_put_tag(skb, vlan_tci); 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds stats->tx_packets++; 3411da177e4SLinus Torvalds stats->tx_bytes += skb->len; 3421da177e4SLinus Torvalds 3439dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3441da177e4SLinus Torvalds dev_queue_xmit(skb); 345d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds 348ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 3491da177e4SLinus Torvalds { 3501da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 3511da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 3521da177e4SLinus Torvalds */ 3539dfebcc6SPatrick McHardy if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) 3541da177e4SLinus Torvalds return -ERANGE; 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds dev->mtu = new_mtu; 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds return 0; 3591da177e4SLinus Torvalds } 3601da177e4SLinus Torvalds 361c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 3629bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 3631da177e4SLinus Torvalds { 3649dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 365b020cb48SPatrick McHardy 366b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 367b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 368b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 369b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 370b020cb48SPatrick McHardy 371b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 3721da177e4SLinus Torvalds } 3731da177e4SLinus Torvalds 374c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 3759bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 3761da177e4SLinus Torvalds { 3779dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 3781da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 3791da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 380b020cb48SPatrick McHardy u32 vlan_qos = (vlan_prio << 13) & 0xE000; 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 383b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 3841da177e4SLinus Torvalds while (mp) { 3851da177e4SLinus Torvalds if (mp->priority == skb_prio) { 386b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 387b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 388b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 389b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 390b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 3911da177e4SLinus Torvalds return 0; 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds mp = mp->next; 3941da177e4SLinus Torvalds } 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvalds /* Create a new mapping then. */ 397b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 3981da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 399c17d8874SPatrick McHardy if (!np) 400c17d8874SPatrick McHardy return -ENOBUFS; 401c17d8874SPatrick McHardy 4021da177e4SLinus Torvalds np->next = mp; 4031da177e4SLinus Torvalds np->priority = skb_prio; 404b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 405b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 406b020cb48SPatrick McHardy if (vlan_qos) 407b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 4081da177e4SLinus Torvalds return 0; 4091da177e4SLinus Torvalds } 4101da177e4SLinus Torvalds 411a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 412b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 4131da177e4SLinus Torvalds { 414b3ce0325SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 415b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 416b3ce0325SPatrick McHardy 41770c03b49SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP)) 4181da177e4SLinus Torvalds return -EINVAL; 419b3ce0325SPatrick McHardy 420b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 42170c03b49SPatrick McHardy 42270c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 42370c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 42470c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 42570c03b49SPatrick McHardy else 42670c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 42770c03b49SPatrick McHardy } 428b3ce0325SPatrick McHardy return 0; 4291da177e4SLinus Torvalds } 4301da177e4SLinus Torvalds 431c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 4321da177e4SLinus Torvalds { 4339dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 4341da177e4SLinus Torvalds } 4351da177e4SLinus Torvalds 436ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 4371da177e4SLinus Torvalds { 4389dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4398c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 4408c979c26SPatrick McHardy int err; 4418c979c26SPatrick McHardy 4428c979c26SPatrick McHardy if (!(real_dev->flags & IFF_UP)) 4431da177e4SLinus Torvalds return -ENETDOWN; 4441da177e4SLinus Torvalds 4458c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 4468c979c26SPatrick McHardy err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN); 4478c979c26SPatrick McHardy if (err < 0) 44889146504SWang Chen goto out; 4498c979c26SPatrick McHardy } 4508c979c26SPatrick McHardy 45189146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 45289146504SWang Chen err = dev_set_allmulti(real_dev, 1); 45389146504SWang Chen if (err < 0) 45489146504SWang Chen goto del_unicast; 45589146504SWang Chen } 45689146504SWang Chen if (dev->flags & IFF_PROMISC) { 45789146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 45889146504SWang Chen if (err < 0) 45989146504SWang Chen goto clear_allmulti; 46089146504SWang Chen } 46189146504SWang Chen 46289146504SWang Chen memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 4636c78dcbdSPatrick McHardy 46470c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 46570c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 46670c03b49SPatrick McHardy 4671da177e4SLinus Torvalds return 0; 46889146504SWang Chen 46989146504SWang Chen clear_allmulti: 47089146504SWang Chen if (dev->flags & IFF_ALLMULTI) 47189146504SWang Chen dev_set_allmulti(real_dev, -1); 47289146504SWang Chen del_unicast: 47389146504SWang Chen if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 47489146504SWang Chen dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN); 47589146504SWang Chen out: 47689146504SWang Chen return err; 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds 479ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 4801da177e4SLinus Torvalds { 48170c03b49SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 48270c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 48370c03b49SPatrick McHardy 48470c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 48570c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 4868c979c26SPatrick McHardy 48756addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 488e83a2ea8SChris Leech dev_unicast_unsync(real_dev, dev); 4896c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 4906c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 4916c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 4926c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 4936c78dcbdSPatrick McHardy 4948c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 4958c979c26SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len); 4968c979c26SPatrick McHardy 4971da177e4SLinus Torvalds return 0; 4981da177e4SLinus Torvalds } 4991da177e4SLinus Torvalds 500ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 50139aaac11SPatrick McHardy { 5029dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 50339aaac11SPatrick McHardy struct sockaddr *addr = p; 50439aaac11SPatrick McHardy int err; 50539aaac11SPatrick McHardy 50639aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 50739aaac11SPatrick McHardy return -EADDRNOTAVAIL; 50839aaac11SPatrick McHardy 50939aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 51039aaac11SPatrick McHardy goto out; 51139aaac11SPatrick McHardy 51239aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 51339aaac11SPatrick McHardy err = dev_unicast_add(real_dev, addr->sa_data, ETH_ALEN); 51439aaac11SPatrick McHardy if (err < 0) 51539aaac11SPatrick McHardy return err; 51639aaac11SPatrick McHardy } 51739aaac11SPatrick McHardy 51839aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 51939aaac11SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN); 52039aaac11SPatrick McHardy 52139aaac11SPatrick McHardy out: 52239aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 52339aaac11SPatrick McHardy return 0; 52439aaac11SPatrick McHardy } 52539aaac11SPatrick McHardy 526ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5271da177e4SLinus Torvalds { 5289dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 5291da177e4SLinus Torvalds struct ifreq ifrr; 5301da177e4SLinus Torvalds int err = -EOPNOTSUPP; 5311da177e4SLinus Torvalds 5321da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 5331da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 5341da177e4SLinus Torvalds 5351da177e4SLinus Torvalds switch (cmd) { 5361da177e4SLinus Torvalds case SIOCGMIIPHY: 5371da177e4SLinus Torvalds case SIOCGMIIREG: 5381da177e4SLinus Torvalds case SIOCSMIIREG: 5391da177e4SLinus Torvalds if (real_dev->do_ioctl && netif_device_present(real_dev)) 5401da177e4SLinus Torvalds err = real_dev->do_ioctl(real_dev, &ifrr, cmd); 5411da177e4SLinus Torvalds break; 5421da177e4SLinus Torvalds } 5431da177e4SLinus Torvalds 5441da177e4SLinus Torvalds if (!err) 5451da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 5461da177e4SLinus Torvalds 5471da177e4SLinus Torvalds return err; 5481da177e4SLinus Torvalds } 5491da177e4SLinus Torvalds 550ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 5516c78dcbdSPatrick McHardy { 5529dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 5536c78dcbdSPatrick McHardy 5546c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 5556c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 5566c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 5576c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 5586c78dcbdSPatrick McHardy } 5596c78dcbdSPatrick McHardy 560e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 5611da177e4SLinus Torvalds { 5629dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 563e83a2ea8SChris Leech dev_unicast_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 5641da177e4SLinus Torvalds } 565ef3eb3e5SPatrick McHardy 566ef3eb3e5SPatrick McHardy /* 567ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 568ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 569ef3eb3e5SPatrick McHardy * separate class since they always nest. 570ef3eb3e5SPatrick McHardy */ 571ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 572cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 573ef3eb3e5SPatrick McHardy 574e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 575e8a0464cSDavid S. Miller struct netdev_queue *txq, 576e8a0464cSDavid S. Miller void *_subclass) 577c773e847SDavid S. Miller { 578c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 579e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 580e8a0464cSDavid S. Miller *(int *)_subclass); 581c773e847SDavid S. Miller } 582c773e847SDavid S. Miller 583c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 584c773e847SDavid S. Miller { 585cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 586cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 587cf508b12SDavid S. Miller subclass); 588e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 589c773e847SDavid S. Miller } 590c773e847SDavid S. Miller 591ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 592ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 593ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 594ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 595ef3eb3e5SPatrick McHardy }; 596ef3eb3e5SPatrick McHardy 597ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 598ef3eb3e5SPatrick McHardy { 5999dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 600ef3eb3e5SPatrick McHardy int subclass = 0; 601ef3eb3e5SPatrick McHardy 602ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 6030ed21b32SPatrick McHardy dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI); 604ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 605ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 606ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 607ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 608ef3eb3e5SPatrick McHardy 609289c79a4SPatrick McHardy dev->features |= real_dev->features & real_dev->vlan_features; 6101ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 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