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; 1439793241fSEric Dumazet struct vlan_rx_stats *rx_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 1669793241fSEric Dumazet rx_stats = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, 1679793241fSEric Dumazet smp_processor_id()); 1689793241fSEric Dumazet rx_stats->rx_packets++; 1699793241fSEric Dumazet rx_stats->rx_bytes += skb->len; 1701da177e4SLinus Torvalds 171cbb042f9SHerbert Xu skb_pull_rcsum(skb, VLAN_HLEN); 172a388442cSStephen Hemminger 1739bb8582eSPatrick McHardy skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci); 1741da177e4SLinus Torvalds 17540f98e1aSPatrick McHardy pr_debug("%s: priority: %u for TCI: %hu\n", 1769bb8582eSPatrick McHardy __func__, skb->priority, vlan_tci); 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds switch (skb->pkt_type) { 1791da177e4SLinus Torvalds case PACKET_BROADCAST: /* Yeah, stats collect these together.. */ 1802029cc2cSPatrick McHardy /* stats->broadcast ++; // no such counter :-( */ 1811da177e4SLinus Torvalds break; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds case PACKET_MULTICAST: 1849793241fSEric Dumazet rx_stats->multicast++; 1851da177e4SLinus Torvalds break; 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds case PACKET_OTHERHOST: 1881da177e4SLinus Torvalds /* Our lower layer thinks this is not local, let's make sure. 1892029cc2cSPatrick McHardy * This allows the VLAN to have a different MAC than the 1902029cc2cSPatrick McHardy * underlying device, and still route correctly. 1911da177e4SLinus Torvalds */ 1922029cc2cSPatrick McHardy if (!compare_ether_addr(eth_hdr(skb)->h_dest, 1932029cc2cSPatrick McHardy skb->dev->dev_addr)) 1941da177e4SLinus Torvalds skb->pkt_type = PACKET_HOST; 1951da177e4SLinus Torvalds break; 1961da177e4SLinus Torvalds default: 1971da177e4SLinus Torvalds break; 1983ff50b79SStephen Hemminger } 1991da177e4SLinus Torvalds 20091b4f954SPavel Emelyanov vlan_set_encap_proto(skb, vhdr); 2011da177e4SLinus Torvalds 2021da177e4SLinus Torvalds skb = vlan_check_reorder_header(skb); 20331ffdbcbSPatrick McHardy if (!skb) { 2049793241fSEric Dumazet rx_stats->rx_errors++; 20531ffdbcbSPatrick McHardy goto err_unlock; 2061da177e4SLinus Torvalds } 20731ffdbcbSPatrick McHardy 20831ffdbcbSPatrick McHardy netif_rx(skb); 2091da177e4SLinus Torvalds rcu_read_unlock(); 21031ffdbcbSPatrick McHardy return NET_RX_SUCCESS; 21131ffdbcbSPatrick McHardy 21231ffdbcbSPatrick McHardy err_unlock: 21331ffdbcbSPatrick McHardy rcu_read_unlock(); 21431ffdbcbSPatrick McHardy err_free: 21531ffdbcbSPatrick McHardy kfree_skb(skb); 21631ffdbcbSPatrick McHardy return NET_RX_DROP; 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds 2199bb8582eSPatrick McHardy static inline u16 2202029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 2211da177e4SLinus Torvalds { 2222029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 2231da177e4SLinus Torvalds 2242029cc2cSPatrick McHardy mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; 2251da177e4SLinus Torvalds while (mp) { 2261da177e4SLinus Torvalds if (mp->priority == skb->priority) { 2272029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 2282029cc2cSPatrick McHardy * to mask correctly with the 2292029cc2cSPatrick McHardy * VLAN's TCI */ 2301da177e4SLinus Torvalds } 2311da177e4SLinus Torvalds mp = mp->next; 2321da177e4SLinus Torvalds } 2331da177e4SLinus Torvalds return 0; 2341da177e4SLinus Torvalds } 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds /* 2371da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 2381da177e4SLinus Torvalds * 2391da177e4SLinus Torvalds * saddr=NULL means use device source address 2401da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 2411da177e4SLinus Torvalds * 2421da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 2431da177e4SLinus Torvalds * physical devices. 2441da177e4SLinus Torvalds */ 245ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 2463b04dddeSStephen Hemminger unsigned short type, 247ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 248ef3eb3e5SPatrick McHardy unsigned int len) 2491da177e4SLinus Torvalds { 2501da177e4SLinus Torvalds struct vlan_hdr *vhdr; 2511349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 2529bb8582eSPatrick McHardy u16 vlan_tci = 0; 2531349fe9aSPatrick McHardy int rc; 2541da177e4SLinus Torvalds 25511a100f8SPatrick McHardy if (WARN_ON(skb_headroom(skb) < dev->hard_header_len)) 25611a100f8SPatrick McHardy return -ENOSPC; 25711a100f8SPatrick McHardy 2581349fe9aSPatrick McHardy if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { 2591da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 2601da177e4SLinus Torvalds 2619bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 2629bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 2639bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds /* 2662029cc2cSPatrick McHardy * Set the protocol type. For a packet of type ETH_P_802_3 we 2672029cc2cSPatrick McHardy * put the length in here instead. It is up to the 802.2 2682029cc2cSPatrick McHardy * layer to carry protocol information. 2691da177e4SLinus Torvalds */ 2702029cc2cSPatrick McHardy if (type != ETH_P_802_3) 2711da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 2722029cc2cSPatrick McHardy else 2731da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 274279e172aSJerome Borsboom 275279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 2761349fe9aSPatrick McHardy type = ETH_P_8021Q; 2771349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 2781da177e4SLinus Torvalds } 2791da177e4SLinus Torvalds 2801da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 2811da177e4SLinus Torvalds if (saddr == NULL) 2821da177e4SLinus Torvalds saddr = dev->dev_addr; 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds /* Now make the underlying real hard header */ 2851349fe9aSPatrick McHardy dev = vlan_dev_info(dev)->real_dev; 2861349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 2870c4e8581SStephen Hemminger if (rc > 0) 2881349fe9aSPatrick McHardy rc += vhdrlen; 2891da177e4SLinus Torvalds return rc; 2901da177e4SLinus Torvalds } 2911da177e4SLinus Torvalds 2926fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, 2936fef4c0cSStephen Hemminger struct net_device *dev) 2941da177e4SLinus Torvalds { 2952f8bc32bSEric Dumazet int i = skb_get_queue_mapping(skb); 2962f8bc32bSEric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 2971da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 2981a123a31SEric Dumazet unsigned int len; 2991a123a31SEric Dumazet int ret; 30055b01e86SDavid S. Miller 3011da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 3021da177e4SLinus Torvalds * 3031da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 3041da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 3051da177e4SLinus Torvalds */ 3066ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 3079dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { 308d80aa31bSPatrick McHardy unsigned int orig_headroom = skb_headroom(skb); 3099bb8582eSPatrick McHardy u16 vlan_tci; 3101da177e4SLinus Torvalds 3119dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_encap_on_xmit++; 3121da177e4SLinus Torvalds 3139bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3149bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3159bb8582eSPatrick McHardy skb = __vlan_put_tag(skb, vlan_tci); 3161da177e4SLinus Torvalds if (!skb) { 317450c4ea1SEric Dumazet txq->tx_dropped++; 318d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3191da177e4SLinus Torvalds } 3201da177e4SLinus Torvalds 3212029cc2cSPatrick McHardy if (orig_headroom < VLAN_HLEN) 3229dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; 3231da177e4SLinus Torvalds } 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds 3269dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3271a123a31SEric Dumazet len = skb->len; 3281a123a31SEric Dumazet ret = dev_queue_xmit(skb); 3291a123a31SEric Dumazet 3301a123a31SEric Dumazet if (likely(ret == NET_XMIT_SUCCESS)) { 3311a123a31SEric Dumazet txq->tx_packets++; 3321a123a31SEric Dumazet txq->tx_bytes += len; 3331a123a31SEric Dumazet } else 3341a123a31SEric Dumazet txq->tx_dropped++; 3351a123a31SEric Dumazet 336cbbef5e1SPatrick McHardy return ret; 3371da177e4SLinus Torvalds } 3381da177e4SLinus Torvalds 3396fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, 340ef3eb3e5SPatrick McHardy struct net_device *dev) 3411da177e4SLinus Torvalds { 3422f8bc32bSEric Dumazet int i = skb_get_queue_mapping(skb); 3432f8bc32bSEric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 3449bb8582eSPatrick McHardy u16 vlan_tci; 3451a123a31SEric Dumazet unsigned int len; 3461a123a31SEric Dumazet int ret; 3471da177e4SLinus Torvalds 3489bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3499bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3509bb8582eSPatrick McHardy skb = __vlan_hwaccel_put_tag(skb, vlan_tci); 3511da177e4SLinus Torvalds 3529dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3531a123a31SEric Dumazet len = skb->len; 3541a123a31SEric Dumazet ret = dev_queue_xmit(skb); 3551a123a31SEric Dumazet 3561a123a31SEric Dumazet if (likely(ret == NET_XMIT_SUCCESS)) { 3571a123a31SEric Dumazet txq->tx_packets++; 3581a123a31SEric Dumazet txq->tx_bytes += len; 3591a123a31SEric Dumazet } else 3601a123a31SEric Dumazet txq->tx_dropped++; 3611a123a31SEric Dumazet 362cbbef5e1SPatrick McHardy return ret; 3631da177e4SLinus Torvalds } 3641da177e4SLinus Torvalds 365ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 3661da177e4SLinus Torvalds { 3671da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 3681da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 3691da177e4SLinus Torvalds */ 3709dfebcc6SPatrick McHardy if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) 3711da177e4SLinus Torvalds return -ERANGE; 3721da177e4SLinus Torvalds 3731da177e4SLinus Torvalds dev->mtu = new_mtu; 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds return 0; 3761da177e4SLinus Torvalds } 3771da177e4SLinus Torvalds 378c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 3799bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 3801da177e4SLinus Torvalds { 3819dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 382b020cb48SPatrick McHardy 383b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 384b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 385b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 386b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 387b020cb48SPatrick McHardy 388b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 3891da177e4SLinus Torvalds } 3901da177e4SLinus Torvalds 391c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 3929bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 3931da177e4SLinus Torvalds { 3949dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 3951da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 3961da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 39705423b24SEric Dumazet u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 400b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4011da177e4SLinus Torvalds while (mp) { 4021da177e4SLinus Torvalds if (mp->priority == skb_prio) { 403b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 404b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 405b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 406b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 407b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 4081da177e4SLinus Torvalds return 0; 4091da177e4SLinus Torvalds } 4101da177e4SLinus Torvalds mp = mp->next; 4111da177e4SLinus Torvalds } 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds /* Create a new mapping then. */ 414b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4151da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 416c17d8874SPatrick McHardy if (!np) 417c17d8874SPatrick McHardy return -ENOBUFS; 418c17d8874SPatrick McHardy 4191da177e4SLinus Torvalds np->next = mp; 4201da177e4SLinus Torvalds np->priority = skb_prio; 421b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 422b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 423b020cb48SPatrick McHardy if (vlan_qos) 424b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 4251da177e4SLinus Torvalds return 0; 4261da177e4SLinus Torvalds } 4271da177e4SLinus Torvalds 428a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 429b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 4301da177e4SLinus Torvalds { 431b3ce0325SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 432b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 433b3ce0325SPatrick McHardy 43470c03b49SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP)) 4351da177e4SLinus Torvalds return -EINVAL; 436b3ce0325SPatrick McHardy 437b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 43870c03b49SPatrick McHardy 43970c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 44070c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 44170c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 44270c03b49SPatrick McHardy else 44370c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 44470c03b49SPatrick McHardy } 445b3ce0325SPatrick McHardy return 0; 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds 448c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 4491da177e4SLinus Torvalds { 4509dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 4511da177e4SLinus Torvalds } 4521da177e4SLinus Torvalds 453ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 4541da177e4SLinus Torvalds { 4559dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4568c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 4578c979c26SPatrick McHardy int err; 4588c979c26SPatrick McHardy 4598c979c26SPatrick McHardy if (!(real_dev->flags & IFF_UP)) 4601da177e4SLinus Torvalds return -ENETDOWN; 4611da177e4SLinus Torvalds 4628c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 463ccffad25SJiri Pirko err = dev_unicast_add(real_dev, dev->dev_addr); 4648c979c26SPatrick McHardy if (err < 0) 46589146504SWang Chen goto out; 4668c979c26SPatrick McHardy } 4678c979c26SPatrick McHardy 46889146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 46989146504SWang Chen err = dev_set_allmulti(real_dev, 1); 47089146504SWang Chen if (err < 0) 47189146504SWang Chen goto del_unicast; 47289146504SWang Chen } 47389146504SWang Chen if (dev->flags & IFF_PROMISC) { 47489146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 47589146504SWang Chen if (err < 0) 47689146504SWang Chen goto clear_allmulti; 47789146504SWang Chen } 47889146504SWang Chen 47989146504SWang Chen memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 4806c78dcbdSPatrick McHardy 48170c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 48270c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 48370c03b49SPatrick McHardy 484adc667e8SJay Vosburgh netif_carrier_on(dev); 4851da177e4SLinus Torvalds return 0; 48689146504SWang Chen 48789146504SWang Chen clear_allmulti: 48889146504SWang Chen if (dev->flags & IFF_ALLMULTI) 48989146504SWang Chen dev_set_allmulti(real_dev, -1); 49089146504SWang Chen del_unicast: 49189146504SWang Chen if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 492ccffad25SJiri Pirko dev_unicast_delete(real_dev, dev->dev_addr); 49389146504SWang Chen out: 494adc667e8SJay Vosburgh netif_carrier_off(dev); 49589146504SWang Chen return err; 4961da177e4SLinus Torvalds } 4971da177e4SLinus Torvalds 498ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 4991da177e4SLinus Torvalds { 50070c03b49SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 50170c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 50270c03b49SPatrick McHardy 50370c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 50470c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 5058c979c26SPatrick McHardy 50656addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 507e83a2ea8SChris Leech dev_unicast_unsync(real_dev, dev); 5086c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5096c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 5106c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5116c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 5126c78dcbdSPatrick McHardy 5138c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 514ccffad25SJiri Pirko dev_unicast_delete(real_dev, dev->dev_addr); 5158c979c26SPatrick McHardy 516adc667e8SJay Vosburgh netif_carrier_off(dev); 5171da177e4SLinus Torvalds return 0; 5181da177e4SLinus Torvalds } 5191da177e4SLinus Torvalds 520ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 52139aaac11SPatrick McHardy { 5229dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 52339aaac11SPatrick McHardy struct sockaddr *addr = p; 52439aaac11SPatrick McHardy int err; 52539aaac11SPatrick McHardy 52639aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 52739aaac11SPatrick McHardy return -EADDRNOTAVAIL; 52839aaac11SPatrick McHardy 52939aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 53039aaac11SPatrick McHardy goto out; 53139aaac11SPatrick McHardy 53239aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 533ccffad25SJiri Pirko err = dev_unicast_add(real_dev, addr->sa_data); 53439aaac11SPatrick McHardy if (err < 0) 53539aaac11SPatrick McHardy return err; 53639aaac11SPatrick McHardy } 53739aaac11SPatrick McHardy 53839aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 539ccffad25SJiri Pirko dev_unicast_delete(real_dev, dev->dev_addr); 54039aaac11SPatrick McHardy 54139aaac11SPatrick McHardy out: 54239aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 54339aaac11SPatrick McHardy return 0; 54439aaac11SPatrick McHardy } 54539aaac11SPatrick McHardy 546ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5471da177e4SLinus Torvalds { 5489dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 549656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 5501da177e4SLinus Torvalds struct ifreq ifrr; 5511da177e4SLinus Torvalds int err = -EOPNOTSUPP; 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 5541da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 5551da177e4SLinus Torvalds 5561da177e4SLinus Torvalds switch (cmd) { 5571da177e4SLinus Torvalds case SIOCGMIIPHY: 5581da177e4SLinus Torvalds case SIOCGMIIREG: 5591da177e4SLinus Torvalds case SIOCSMIIREG: 560656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 561656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 5621da177e4SLinus Torvalds break; 5631da177e4SLinus Torvalds } 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds if (!err) 5661da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds return err; 5691da177e4SLinus Torvalds } 5701da177e4SLinus Torvalds 571cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 572cc883d16SFrank Blaschka { 573cc883d16SFrank Blaschka struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 574cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 575cc883d16SFrank Blaschka int err = 0; 576cc883d16SFrank Blaschka 577cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 5789d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 579cc883d16SFrank Blaschka 580cc883d16SFrank Blaschka return err; 581cc883d16SFrank Blaschka } 582cc883d16SFrank Blaschka 583b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 584b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 585b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 586b85daa53SVasu Dev { 587b85daa53SVasu Dev struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 588b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 589b85daa53SVasu Dev int rc = 0; 590b85daa53SVasu Dev 591b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 592b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 593b85daa53SVasu Dev 594b85daa53SVasu Dev return rc; 595b85daa53SVasu Dev } 596b85daa53SVasu Dev 597b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 598b85daa53SVasu Dev { 599b85daa53SVasu Dev struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 600b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 601b85daa53SVasu Dev int len = 0; 602b85daa53SVasu Dev 603b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 604b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 605b85daa53SVasu Dev 606b85daa53SVasu Dev return len; 607b85daa53SVasu Dev } 6080af46d99SYi Zou 6090af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 6100af46d99SYi Zou { 6110af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6120af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6130af46d99SYi Zou int rc = -EINVAL; 6140af46d99SYi Zou 6150af46d99SYi Zou if (ops->ndo_fcoe_enable) 6160af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 6170af46d99SYi Zou return rc; 6180af46d99SYi Zou } 6190af46d99SYi Zou 6200af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 6210af46d99SYi Zou { 6220af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6230af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6240af46d99SYi Zou int rc = -EINVAL; 6250af46d99SYi Zou 6260af46d99SYi Zou if (ops->ndo_fcoe_disable) 6270af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 6280af46d99SYi Zou return rc; 6290af46d99SYi Zou } 630d6534799SYi Zou 631d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 632d6534799SYi Zou { 633d6534799SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 634d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 635d6534799SYi Zou int rc = -EINVAL; 636d6534799SYi Zou 637d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 638d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 639d6534799SYi Zou return rc; 640d6534799SYi Zou } 641b85daa53SVasu Dev #endif 642b85daa53SVasu Dev 643ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 6446c78dcbdSPatrick McHardy { 6459dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6466c78dcbdSPatrick McHardy 6476c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 6486c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 6496c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 6506c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 6516c78dcbdSPatrick McHardy } 6526c78dcbdSPatrick McHardy 653e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 6541da177e4SLinus Torvalds { 6559dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 656e83a2ea8SChris Leech dev_unicast_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 6571da177e4SLinus Torvalds } 658ef3eb3e5SPatrick McHardy 659ef3eb3e5SPatrick McHardy /* 660ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 661ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 662ef3eb3e5SPatrick McHardy * separate class since they always nest. 663ef3eb3e5SPatrick McHardy */ 664ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 665cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 666ef3eb3e5SPatrick McHardy 667e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 668e8a0464cSDavid S. Miller struct netdev_queue *txq, 669e8a0464cSDavid S. Miller void *_subclass) 670c773e847SDavid S. Miller { 671c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 672e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 673e8a0464cSDavid S. Miller *(int *)_subclass); 674c773e847SDavid S. Miller } 675c773e847SDavid S. Miller 676c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 677c773e847SDavid S. Miller { 678cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 679cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 680cf508b12SDavid S. Miller subclass); 681e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 682c773e847SDavid S. Miller } 683c773e847SDavid S. Miller 684ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 685ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 686ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 687ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 688ef3eb3e5SPatrick McHardy }; 689ef3eb3e5SPatrick McHardy 690f7d1b9f5SEric Dumazet static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops; 691f7d1b9f5SEric Dumazet 692ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 693ef3eb3e5SPatrick McHardy { 6949dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 695ef3eb3e5SPatrick McHardy int subclass = 0; 696ef3eb3e5SPatrick McHardy 697adc667e8SJay Vosburgh netif_carrier_off(dev); 698adc667e8SJay Vosburgh 699ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 7000ed21b32SPatrick McHardy dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI); 701ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 702ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 703ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 704ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 705ef3eb3e5SPatrick McHardy 706289c79a4SPatrick McHardy dev->features |= real_dev->features & real_dev->vlan_features; 7071ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 7085fb13570SPatrick McHardy 709ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 710ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 711ef3eb3e5SPatrick McHardy 712ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 713ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 714ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 715ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 716ef3eb3e5SPatrick McHardy 717b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 718b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 719b85daa53SVasu Dev #endif 720b85daa53SVasu Dev 721ef3eb3e5SPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_TX) { 722ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 723ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 724f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_accel_ops; 725ef3eb3e5SPatrick McHardy } else { 726ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 727ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 728f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 729ef3eb3e5SPatrick McHardy } 730ef3eb3e5SPatrick McHardy 73126a25239SJoonwoo Park if (is_vlan_dev(real_dev)) 732ef3eb3e5SPatrick McHardy subclass = 1; 733ef3eb3e5SPatrick McHardy 734c773e847SDavid S. Miller vlan_dev_set_lockdep_class(dev, subclass); 7359793241fSEric Dumazet 7369793241fSEric Dumazet vlan_dev_info(dev)->vlan_rx_stats = alloc_percpu(struct vlan_rx_stats); 7379793241fSEric Dumazet if (!vlan_dev_info(dev)->vlan_rx_stats) 7389793241fSEric Dumazet return -ENOMEM; 7399793241fSEric Dumazet 740ef3eb3e5SPatrick McHardy return 0; 741ef3eb3e5SPatrick McHardy } 742ef3eb3e5SPatrick McHardy 74323556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 74423556323SPavel Emelyanov { 74523556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 74623556323SPavel Emelyanov struct vlan_dev_info *vlan = vlan_dev_info(dev); 74723556323SPavel Emelyanov int i; 74823556323SPavel Emelyanov 7499793241fSEric Dumazet free_percpu(vlan->vlan_rx_stats); 7509793241fSEric Dumazet vlan->vlan_rx_stats = NULL; 75123556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 75223556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 75323556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 75423556323SPavel Emelyanov kfree(pm); 75523556323SPavel Emelyanov } 75623556323SPavel Emelyanov } 75723556323SPavel Emelyanov } 75823556323SPavel Emelyanov 759b3020061SStephen Hemminger static int vlan_ethtool_get_settings(struct net_device *dev, 760b3020061SStephen Hemminger struct ethtool_cmd *cmd) 761b3020061SStephen Hemminger { 762b3020061SStephen Hemminger const struct vlan_dev_info *vlan = vlan_dev_info(dev); 763b1b67dd4SPatrick McHardy return dev_ethtool_get_settings(vlan->real_dev, cmd); 764b3020061SStephen Hemminger } 765b3020061SStephen Hemminger 766b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 767b3020061SStephen Hemminger struct ethtool_drvinfo *info) 768b3020061SStephen Hemminger { 769b3020061SStephen Hemminger strcpy(info->driver, vlan_fullname); 770b3020061SStephen Hemminger strcpy(info->version, vlan_version); 771b3020061SStephen Hemminger strcpy(info->fw_version, "N/A"); 772b3020061SStephen Hemminger } 773b3020061SStephen Hemminger 77475b8846aSPatrick McHardy static u32 vlan_ethtool_get_rx_csum(struct net_device *dev) 77575b8846aSPatrick McHardy { 77675b8846aSPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 777b1b67dd4SPatrick McHardy return dev_ethtool_get_rx_csum(vlan->real_dev); 77875b8846aSPatrick McHardy } 77975b8846aSPatrick McHardy 78019b9a4e2SPatrick McHardy static u32 vlan_ethtool_get_flags(struct net_device *dev) 78119b9a4e2SPatrick McHardy { 78219b9a4e2SPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 783b1b67dd4SPatrick McHardy return dev_ethtool_get_flags(vlan->real_dev); 78419b9a4e2SPatrick McHardy } 78519b9a4e2SPatrick McHardy 7869793241fSEric Dumazet static struct net_device_stats *vlan_dev_get_stats(struct net_device *dev) 7879793241fSEric Dumazet { 7889793241fSEric Dumazet struct net_device_stats *stats = &dev->stats; 7899793241fSEric Dumazet 7909793241fSEric Dumazet dev_txq_stats_fold(dev, stats); 7919793241fSEric Dumazet 7929793241fSEric Dumazet if (vlan_dev_info(dev)->vlan_rx_stats) { 7939793241fSEric Dumazet struct vlan_rx_stats *p, rx = {0}; 7949793241fSEric Dumazet int i; 7959793241fSEric Dumazet 7969793241fSEric Dumazet for_each_possible_cpu(i) { 7979793241fSEric Dumazet p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i); 7989793241fSEric Dumazet rx.rx_packets += p->rx_packets; 7999793241fSEric Dumazet rx.rx_bytes += p->rx_bytes; 8009793241fSEric Dumazet rx.rx_errors += p->rx_errors; 8019793241fSEric Dumazet rx.multicast += p->multicast; 8029793241fSEric Dumazet } 8039793241fSEric Dumazet stats->rx_packets = rx.rx_packets; 8049793241fSEric Dumazet stats->rx_bytes = rx.rx_bytes; 8059793241fSEric Dumazet stats->rx_errors = rx.rx_errors; 8069793241fSEric Dumazet stats->multicast = rx.multicast; 8079793241fSEric Dumazet } 8089793241fSEric Dumazet return stats; 8099793241fSEric Dumazet } 8109793241fSEric Dumazet 81175b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 812b3020061SStephen Hemminger .get_settings = vlan_ethtool_get_settings, 813b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 81475b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 81575b8846aSPatrick McHardy .get_rx_csum = vlan_ethtool_get_rx_csum, 81619b9a4e2SPatrick McHardy .get_flags = vlan_ethtool_get_flags, 81775b8846aSPatrick McHardy }; 81875b8846aSPatrick McHardy 819656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 820656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 821656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 822656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 823656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 824656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 825f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 826f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 827f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 828f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 829f7d1b9f5SEric Dumazet .ndo_set_multicast_list = vlan_dev_set_rx_mode, 830f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 831f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 832cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 8339793241fSEric Dumazet .ndo_get_stats = vlan_dev_get_stats, 834b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 835b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 836b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 8370af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 8380af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 839d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 840b85daa53SVasu Dev #endif 841f7d1b9f5SEric Dumazet }; 842f7d1b9f5SEric Dumazet 843f7d1b9f5SEric Dumazet static const struct net_device_ops vlan_netdev_accel_ops = { 844f7d1b9f5SEric Dumazet .ndo_change_mtu = vlan_dev_change_mtu, 845f7d1b9f5SEric Dumazet .ndo_init = vlan_dev_init, 846f7d1b9f5SEric Dumazet .ndo_uninit = vlan_dev_uninit, 847f7d1b9f5SEric Dumazet .ndo_open = vlan_dev_open, 848f7d1b9f5SEric Dumazet .ndo_stop = vlan_dev_stop, 849f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, 850656299f7SStephen Hemminger .ndo_validate_addr = eth_validate_addr, 851656299f7SStephen Hemminger .ndo_set_mac_address = vlan_dev_set_mac_address, 852656299f7SStephen Hemminger .ndo_set_rx_mode = vlan_dev_set_rx_mode, 853656299f7SStephen Hemminger .ndo_set_multicast_list = vlan_dev_set_rx_mode, 854656299f7SStephen Hemminger .ndo_change_rx_flags = vlan_dev_change_rx_flags, 855656299f7SStephen Hemminger .ndo_do_ioctl = vlan_dev_ioctl, 856cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 8579793241fSEric Dumazet .ndo_get_stats = vlan_dev_get_stats, 858b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 859b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 860b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 8610af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 8620af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 863d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 864b85daa53SVasu Dev #endif 865656299f7SStephen Hemminger }; 866656299f7SStephen Hemminger 867ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 868ef3eb3e5SPatrick McHardy { 869ef3eb3e5SPatrick McHardy ether_setup(dev); 870ef3eb3e5SPatrick McHardy 871ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 87293f154b5SEric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 873ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 874ef3eb3e5SPatrick McHardy 875656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 876ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 87775b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 878ef3eb3e5SPatrick McHardy 879ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 880ef3eb3e5SPatrick McHardy } 881