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 1662dc85e91SEric Dumazet rx_stats = per_cpu_ptr(vlan_dev_info(skb->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 4345e756593SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | 4355e756593SPatrick McHardy VLAN_FLAG_LOOSE_BINDING)) 4361da177e4SLinus Torvalds return -EINVAL; 437b3ce0325SPatrick McHardy 438b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 43970c03b49SPatrick McHardy 44070c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 44170c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 44270c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 44370c03b49SPatrick McHardy else 44470c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 44570c03b49SPatrick McHardy } 446b3ce0325SPatrick McHardy return 0; 4471da177e4SLinus Torvalds } 4481da177e4SLinus Torvalds 449c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 4501da177e4SLinus Torvalds { 4519dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 4521da177e4SLinus Torvalds } 4531da177e4SLinus Torvalds 454ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 4551da177e4SLinus Torvalds { 4569dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4578c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 4588c979c26SPatrick McHardy int err; 4598c979c26SPatrick McHardy 4605e756593SPatrick McHardy if (!(real_dev->flags & IFF_UP) && 4615e756593SPatrick McHardy !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 4621da177e4SLinus Torvalds return -ENETDOWN; 4631da177e4SLinus Torvalds 4648c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 465ccffad25SJiri Pirko err = dev_unicast_add(real_dev, dev->dev_addr); 4668c979c26SPatrick McHardy if (err < 0) 46789146504SWang Chen goto out; 4688c979c26SPatrick McHardy } 4698c979c26SPatrick McHardy 47089146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 47189146504SWang Chen err = dev_set_allmulti(real_dev, 1); 47289146504SWang Chen if (err < 0) 47389146504SWang Chen goto del_unicast; 47489146504SWang Chen } 47589146504SWang Chen if (dev->flags & IFF_PROMISC) { 47689146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 47789146504SWang Chen if (err < 0) 47889146504SWang Chen goto clear_allmulti; 47989146504SWang Chen } 48089146504SWang Chen 48189146504SWang Chen memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 4826c78dcbdSPatrick McHardy 48370c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 48470c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 48570c03b49SPatrick McHardy 486adc667e8SJay Vosburgh netif_carrier_on(dev); 4871da177e4SLinus Torvalds return 0; 48889146504SWang Chen 48989146504SWang Chen clear_allmulti: 49089146504SWang Chen if (dev->flags & IFF_ALLMULTI) 49189146504SWang Chen dev_set_allmulti(real_dev, -1); 49289146504SWang Chen del_unicast: 49389146504SWang Chen if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 494ccffad25SJiri Pirko dev_unicast_delete(real_dev, dev->dev_addr); 49589146504SWang Chen out: 496adc667e8SJay Vosburgh netif_carrier_off(dev); 49789146504SWang Chen return err; 4981da177e4SLinus Torvalds } 4991da177e4SLinus Torvalds 500ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 5011da177e4SLinus Torvalds { 50270c03b49SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 50370c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 50470c03b49SPatrick McHardy 50570c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 50670c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 5078c979c26SPatrick McHardy 50856addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 509e83a2ea8SChris Leech dev_unicast_unsync(real_dev, dev); 5106c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5116c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 5126c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5136c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 5146c78dcbdSPatrick McHardy 5158c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 516ccffad25SJiri Pirko dev_unicast_delete(real_dev, dev->dev_addr); 5178c979c26SPatrick McHardy 518adc667e8SJay Vosburgh netif_carrier_off(dev); 5191da177e4SLinus Torvalds return 0; 5201da177e4SLinus Torvalds } 5211da177e4SLinus Torvalds 522ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 52339aaac11SPatrick McHardy { 5249dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 52539aaac11SPatrick McHardy struct sockaddr *addr = p; 52639aaac11SPatrick McHardy int err; 52739aaac11SPatrick McHardy 52839aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 52939aaac11SPatrick McHardy return -EADDRNOTAVAIL; 53039aaac11SPatrick McHardy 53139aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 53239aaac11SPatrick McHardy goto out; 53339aaac11SPatrick McHardy 53439aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 535ccffad25SJiri Pirko err = dev_unicast_add(real_dev, addr->sa_data); 53639aaac11SPatrick McHardy if (err < 0) 53739aaac11SPatrick McHardy return err; 53839aaac11SPatrick McHardy } 53939aaac11SPatrick McHardy 54039aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 541ccffad25SJiri Pirko dev_unicast_delete(real_dev, dev->dev_addr); 54239aaac11SPatrick McHardy 54339aaac11SPatrick McHardy out: 54439aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 54539aaac11SPatrick McHardy return 0; 54639aaac11SPatrick McHardy } 54739aaac11SPatrick McHardy 548ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5491da177e4SLinus Torvalds { 5509dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 551656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 5521da177e4SLinus Torvalds struct ifreq ifrr; 5531da177e4SLinus Torvalds int err = -EOPNOTSUPP; 5541da177e4SLinus Torvalds 5551da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 5561da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds switch (cmd) { 5591da177e4SLinus Torvalds case SIOCGMIIPHY: 5601da177e4SLinus Torvalds case SIOCGMIIREG: 5611da177e4SLinus Torvalds case SIOCSMIIREG: 562656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 563656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 5641da177e4SLinus Torvalds break; 5651da177e4SLinus Torvalds } 5661da177e4SLinus Torvalds 5671da177e4SLinus Torvalds if (!err) 5681da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 5691da177e4SLinus Torvalds 5701da177e4SLinus Torvalds return err; 5711da177e4SLinus Torvalds } 5721da177e4SLinus Torvalds 573cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 574cc883d16SFrank Blaschka { 575cc883d16SFrank Blaschka struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 576cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 577cc883d16SFrank Blaschka int err = 0; 578cc883d16SFrank Blaschka 579cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 5809d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 581cc883d16SFrank Blaschka 582cc883d16SFrank Blaschka return err; 583cc883d16SFrank Blaschka } 584cc883d16SFrank Blaschka 585b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 586b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 587b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 588b85daa53SVasu Dev { 589b85daa53SVasu Dev struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 590b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 591b85daa53SVasu Dev int rc = 0; 592b85daa53SVasu Dev 593b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 594b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 595b85daa53SVasu Dev 596b85daa53SVasu Dev return rc; 597b85daa53SVasu Dev } 598b85daa53SVasu Dev 599b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 600b85daa53SVasu Dev { 601b85daa53SVasu Dev struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 602b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 603b85daa53SVasu Dev int len = 0; 604b85daa53SVasu Dev 605b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 606b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 607b85daa53SVasu Dev 608b85daa53SVasu Dev return len; 609b85daa53SVasu Dev } 6100af46d99SYi Zou 6110af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 6120af46d99SYi Zou { 6130af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6140af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6150af46d99SYi Zou int rc = -EINVAL; 6160af46d99SYi Zou 6170af46d99SYi Zou if (ops->ndo_fcoe_enable) 6180af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 6190af46d99SYi Zou return rc; 6200af46d99SYi Zou } 6210af46d99SYi Zou 6220af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 6230af46d99SYi Zou { 6240af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6250af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6260af46d99SYi Zou int rc = -EINVAL; 6270af46d99SYi Zou 6280af46d99SYi Zou if (ops->ndo_fcoe_disable) 6290af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 6300af46d99SYi Zou return rc; 6310af46d99SYi Zou } 632d6534799SYi Zou 633d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 634d6534799SYi Zou { 635d6534799SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 636d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 637d6534799SYi Zou int rc = -EINVAL; 638d6534799SYi Zou 639d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 640d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 641d6534799SYi Zou return rc; 642d6534799SYi Zou } 643b85daa53SVasu Dev #endif 644b85daa53SVasu Dev 645ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 6466c78dcbdSPatrick McHardy { 6479dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6486c78dcbdSPatrick McHardy 6496c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 6506c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 6516c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 6526c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 6536c78dcbdSPatrick McHardy } 6546c78dcbdSPatrick McHardy 655e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 6561da177e4SLinus Torvalds { 6579dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 658e83a2ea8SChris Leech dev_unicast_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 6591da177e4SLinus Torvalds } 660ef3eb3e5SPatrick McHardy 661ef3eb3e5SPatrick McHardy /* 662ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 663ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 664ef3eb3e5SPatrick McHardy * separate class since they always nest. 665ef3eb3e5SPatrick McHardy */ 666ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 667cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 668ef3eb3e5SPatrick McHardy 669e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 670e8a0464cSDavid S. Miller struct netdev_queue *txq, 671e8a0464cSDavid S. Miller void *_subclass) 672c773e847SDavid S. Miller { 673c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 674e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 675e8a0464cSDavid S. Miller *(int *)_subclass); 676c773e847SDavid S. Miller } 677c773e847SDavid S. Miller 678c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 679c773e847SDavid S. Miller { 680cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 681cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 682cf508b12SDavid S. Miller subclass); 683e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 684c773e847SDavid S. Miller } 685c773e847SDavid S. Miller 686ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 687ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 688ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 689ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 690ef3eb3e5SPatrick McHardy }; 691ef3eb3e5SPatrick McHardy 692f7d1b9f5SEric Dumazet static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops; 693f7d1b9f5SEric Dumazet 694ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 695ef3eb3e5SPatrick McHardy { 6969dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 697ef3eb3e5SPatrick McHardy int subclass = 0; 698ef3eb3e5SPatrick McHardy 699adc667e8SJay Vosburgh netif_carrier_off(dev); 700adc667e8SJay Vosburgh 701ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 7020ed21b32SPatrick McHardy dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI); 703ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 704ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 705ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 706ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 707ef3eb3e5SPatrick McHardy 708289c79a4SPatrick McHardy dev->features |= real_dev->features & real_dev->vlan_features; 7091ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 7105fb13570SPatrick McHardy 711ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 712ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 713ef3eb3e5SPatrick McHardy 714ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 715ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 716ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 717ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 718ef3eb3e5SPatrick McHardy 719b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 720b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 721b85daa53SVasu Dev #endif 722b85daa53SVasu Dev 723ef3eb3e5SPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_TX) { 724ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 725ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 726f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_accel_ops; 727ef3eb3e5SPatrick McHardy } else { 728ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 729ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 730f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 731ef3eb3e5SPatrick McHardy } 732ef3eb3e5SPatrick McHardy 73326a25239SJoonwoo Park if (is_vlan_dev(real_dev)) 734ef3eb3e5SPatrick McHardy subclass = 1; 735ef3eb3e5SPatrick McHardy 736c773e847SDavid S. Miller vlan_dev_set_lockdep_class(dev, subclass); 7379793241fSEric Dumazet 7389793241fSEric Dumazet vlan_dev_info(dev)->vlan_rx_stats = alloc_percpu(struct vlan_rx_stats); 7399793241fSEric Dumazet if (!vlan_dev_info(dev)->vlan_rx_stats) 7409793241fSEric Dumazet return -ENOMEM; 7419793241fSEric Dumazet 742ef3eb3e5SPatrick McHardy return 0; 743ef3eb3e5SPatrick McHardy } 744ef3eb3e5SPatrick McHardy 74523556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 74623556323SPavel Emelyanov { 74723556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 74823556323SPavel Emelyanov struct vlan_dev_info *vlan = vlan_dev_info(dev); 74923556323SPavel Emelyanov int i; 75023556323SPavel Emelyanov 7519793241fSEric Dumazet free_percpu(vlan->vlan_rx_stats); 7529793241fSEric Dumazet vlan->vlan_rx_stats = NULL; 75323556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 75423556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 75523556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 75623556323SPavel Emelyanov kfree(pm); 75723556323SPavel Emelyanov } 75823556323SPavel Emelyanov } 75923556323SPavel Emelyanov } 76023556323SPavel Emelyanov 761b3020061SStephen Hemminger static int vlan_ethtool_get_settings(struct net_device *dev, 762b3020061SStephen Hemminger struct ethtool_cmd *cmd) 763b3020061SStephen Hemminger { 764b3020061SStephen Hemminger const struct vlan_dev_info *vlan = vlan_dev_info(dev); 765b1b67dd4SPatrick McHardy return dev_ethtool_get_settings(vlan->real_dev, cmd); 766b3020061SStephen Hemminger } 767b3020061SStephen Hemminger 768b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 769b3020061SStephen Hemminger struct ethtool_drvinfo *info) 770b3020061SStephen Hemminger { 771b3020061SStephen Hemminger strcpy(info->driver, vlan_fullname); 772b3020061SStephen Hemminger strcpy(info->version, vlan_version); 773b3020061SStephen Hemminger strcpy(info->fw_version, "N/A"); 774b3020061SStephen Hemminger } 775b3020061SStephen Hemminger 77675b8846aSPatrick McHardy static u32 vlan_ethtool_get_rx_csum(struct net_device *dev) 77775b8846aSPatrick McHardy { 77875b8846aSPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 779b1b67dd4SPatrick McHardy return dev_ethtool_get_rx_csum(vlan->real_dev); 78075b8846aSPatrick McHardy } 78175b8846aSPatrick McHardy 78219b9a4e2SPatrick McHardy static u32 vlan_ethtool_get_flags(struct net_device *dev) 78319b9a4e2SPatrick McHardy { 78419b9a4e2SPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 785b1b67dd4SPatrick McHardy return dev_ethtool_get_flags(vlan->real_dev); 78619b9a4e2SPatrick McHardy } 78719b9a4e2SPatrick McHardy 7889793241fSEric Dumazet static struct net_device_stats *vlan_dev_get_stats(struct net_device *dev) 7899793241fSEric Dumazet { 7909793241fSEric Dumazet struct net_device_stats *stats = &dev->stats; 7919793241fSEric Dumazet 7929793241fSEric Dumazet dev_txq_stats_fold(dev, stats); 7939793241fSEric Dumazet 7949793241fSEric Dumazet if (vlan_dev_info(dev)->vlan_rx_stats) { 7959793241fSEric Dumazet struct vlan_rx_stats *p, rx = {0}; 7969793241fSEric Dumazet int i; 7979793241fSEric Dumazet 7989793241fSEric Dumazet for_each_possible_cpu(i) { 7999793241fSEric Dumazet p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i); 8009793241fSEric Dumazet rx.rx_packets += p->rx_packets; 8019793241fSEric Dumazet rx.rx_bytes += p->rx_bytes; 8029793241fSEric Dumazet rx.rx_errors += p->rx_errors; 8039793241fSEric Dumazet rx.multicast += p->multicast; 8049793241fSEric Dumazet } 8059793241fSEric Dumazet stats->rx_packets = rx.rx_packets; 8069793241fSEric Dumazet stats->rx_bytes = rx.rx_bytes; 8079793241fSEric Dumazet stats->rx_errors = rx.rx_errors; 8089793241fSEric Dumazet stats->multicast = rx.multicast; 8099793241fSEric Dumazet } 8109793241fSEric Dumazet return stats; 8119793241fSEric Dumazet } 8129793241fSEric Dumazet 81375b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 814b3020061SStephen Hemminger .get_settings = vlan_ethtool_get_settings, 815b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 81675b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 81775b8846aSPatrick McHardy .get_rx_csum = vlan_ethtool_get_rx_csum, 81819b9a4e2SPatrick McHardy .get_flags = vlan_ethtool_get_flags, 81975b8846aSPatrick McHardy }; 82075b8846aSPatrick McHardy 821656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 822656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 823656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 824656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 825656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 826656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 827f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 828f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 829f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 830f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 831f7d1b9f5SEric Dumazet .ndo_set_multicast_list = vlan_dev_set_rx_mode, 832f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 833f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 834cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 8359793241fSEric Dumazet .ndo_get_stats = vlan_dev_get_stats, 836b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 837b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 838b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 8390af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 8400af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 841d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 842b85daa53SVasu Dev #endif 843f7d1b9f5SEric Dumazet }; 844f7d1b9f5SEric Dumazet 845f7d1b9f5SEric Dumazet static const struct net_device_ops vlan_netdev_accel_ops = { 846f7d1b9f5SEric Dumazet .ndo_change_mtu = vlan_dev_change_mtu, 847f7d1b9f5SEric Dumazet .ndo_init = vlan_dev_init, 848f7d1b9f5SEric Dumazet .ndo_uninit = vlan_dev_uninit, 849f7d1b9f5SEric Dumazet .ndo_open = vlan_dev_open, 850f7d1b9f5SEric Dumazet .ndo_stop = vlan_dev_stop, 851f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, 852656299f7SStephen Hemminger .ndo_validate_addr = eth_validate_addr, 853656299f7SStephen Hemminger .ndo_set_mac_address = vlan_dev_set_mac_address, 854656299f7SStephen Hemminger .ndo_set_rx_mode = vlan_dev_set_rx_mode, 855656299f7SStephen Hemminger .ndo_set_multicast_list = vlan_dev_set_rx_mode, 856656299f7SStephen Hemminger .ndo_change_rx_flags = vlan_dev_change_rx_flags, 857656299f7SStephen Hemminger .ndo_do_ioctl = vlan_dev_ioctl, 858cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 8599793241fSEric Dumazet .ndo_get_stats = vlan_dev_get_stats, 860b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 861b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 862b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 8630af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 8640af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 865d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 866b85daa53SVasu Dev #endif 867656299f7SStephen Hemminger }; 868656299f7SStephen Hemminger 869ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 870ef3eb3e5SPatrick McHardy { 871ef3eb3e5SPatrick McHardy ether_setup(dev); 872ef3eb3e5SPatrick McHardy 873ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 87493f154b5SEric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 875ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 876ef3eb3e5SPatrick McHardy 877656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 878ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 87975b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 880ef3eb3e5SPatrick McHardy 881ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 882ef3eb3e5SPatrick McHardy } 883