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> 245a0e3ad6STejun Heo #include <linux/slab.h> 251da177e4SLinus Torvalds #include <linux/skbuff.h> 261da177e4SLinus Torvalds #include <linux/netdevice.h> 271da177e4SLinus Torvalds #include <linux/etherdevice.h> 2875b8846aSPatrick McHardy #include <linux/ethtool.h> 291da177e4SLinus Torvalds #include <net/arp.h> 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #include "vlan.h" 321da177e4SLinus Torvalds #include "vlanproc.h" 331da177e4SLinus Torvalds #include <linux/if_vlan.h> 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds /* 361da177e4SLinus Torvalds * Rebuild the Ethernet MAC header. This is called after an ARP 371da177e4SLinus Torvalds * (or in future other address resolution) has completed on this 381da177e4SLinus Torvalds * sk_buff. We now let ARP fill in the other fields. 391da177e4SLinus Torvalds * 401da177e4SLinus Torvalds * This routine CANNOT use cached dst->neigh! 411da177e4SLinus Torvalds * Really, it is used only when dst->neigh is wrong. 421da177e4SLinus Torvalds * 431da177e4SLinus Torvalds * TODO: This needs a checkup, I'm ignorant here. --BLG 441da177e4SLinus Torvalds */ 45ef3eb3e5SPatrick McHardy static int vlan_dev_rebuild_header(struct sk_buff *skb) 461da177e4SLinus Torvalds { 471da177e4SLinus Torvalds struct net_device *dev = skb->dev; 481da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds switch (veth->h_vlan_encapsulated_proto) { 511da177e4SLinus Torvalds #ifdef CONFIG_INET 5260678040SArnaldo Carvalho de Melo case htons(ETH_P_IP): 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds /* TODO: Confirm this will work with VLAN headers... */ 551da177e4SLinus Torvalds return arp_find(veth->h_dest, skb); 561da177e4SLinus Torvalds #endif 571da177e4SLinus Torvalds default: 5840f98e1aSPatrick McHardy pr_debug("%s: unable to resolve type %X addresses.\n", 59d136fe72SAlexey Dobriyan dev->name, ntohs(veth->h_vlan_encapsulated_proto)); 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); 621da177e4SLinus Torvalds break; 633ff50b79SStephen Hemminger } 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds return 0; 661da177e4SLinus Torvalds } 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) 691da177e4SLinus Torvalds { 709dfebcc6SPatrick McHardy if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { 7111a100f8SPatrick McHardy if (skb_cow(skb, skb_headroom(skb)) < 0) 7211a100f8SPatrick McHardy skb = NULL; 731da177e4SLinus Torvalds if (skb) { 741da177e4SLinus Torvalds /* Lifted from Gleb's VLAN code... */ 751da177e4SLinus Torvalds memmove(skb->data - ETH_HLEN, 761da177e4SLinus Torvalds skb->data - VLAN_ETH_HLEN, 12); 77b0e380b1SArnaldo Carvalho de Melo skb->mac_header += VLAN_HLEN; 781da177e4SLinus Torvalds } 791da177e4SLinus Torvalds } 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds return skb; 821da177e4SLinus Torvalds } 831da177e4SLinus Torvalds 8491b4f954SPavel Emelyanov static inline void vlan_set_encap_proto(struct sk_buff *skb, 8591b4f954SPavel Emelyanov struct vlan_hdr *vhdr) 8691b4f954SPavel Emelyanov { 8791b4f954SPavel Emelyanov __be16 proto; 8891b4f954SPavel Emelyanov unsigned char *rawp; 8991b4f954SPavel Emelyanov 9091b4f954SPavel Emelyanov /* 9191b4f954SPavel Emelyanov * Was a VLAN packet, grab the encapsulated protocol, which the layer 9291b4f954SPavel Emelyanov * three protocols care about. 9391b4f954SPavel Emelyanov */ 9491b4f954SPavel Emelyanov 9591b4f954SPavel Emelyanov proto = vhdr->h_vlan_encapsulated_proto; 9691b4f954SPavel Emelyanov if (ntohs(proto) >= 1536) { 9791b4f954SPavel Emelyanov skb->protocol = proto; 9891b4f954SPavel Emelyanov return; 9991b4f954SPavel Emelyanov } 10091b4f954SPavel Emelyanov 10191b4f954SPavel Emelyanov rawp = skb->data; 10291b4f954SPavel Emelyanov if (*(unsigned short *)rawp == 0xFFFF) 10391b4f954SPavel Emelyanov /* 10491b4f954SPavel Emelyanov * This is a magic hack to spot IPX packets. Older Novell 10591b4f954SPavel Emelyanov * breaks the protocol design and runs IPX over 802.3 without 10691b4f954SPavel Emelyanov * an 802.2 LLC layer. We look for FFFF which isn't a used 10791b4f954SPavel Emelyanov * 802.2 SSAP/DSAP. This won't work for fault tolerant netware 10891b4f954SPavel Emelyanov * but does for the rest. 10991b4f954SPavel Emelyanov */ 11091b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_3); 11191b4f954SPavel Emelyanov else 11291b4f954SPavel Emelyanov /* 11391b4f954SPavel Emelyanov * Real 802.2 LLC 11491b4f954SPavel Emelyanov */ 11591b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_2); 11691b4f954SPavel Emelyanov } 11791b4f954SPavel Emelyanov 1181da177e4SLinus Torvalds /* 1191da177e4SLinus Torvalds * Determine the packet's protocol ID. The rule here is that we 1201da177e4SLinus Torvalds * assume 802.3 if the type field is short enough to be a length. 1211da177e4SLinus Torvalds * This is normal practice and works for any 'now in use' protocol. 1221da177e4SLinus Torvalds * 1231da177e4SLinus Torvalds * Also, at this point we assume that we ARE dealing exclusively with 1241da177e4SLinus Torvalds * VLAN packets, or packets that should be made into VLAN packets based 1251da177e4SLinus Torvalds * on a default VLAN ID. 1261da177e4SLinus Torvalds * 1271da177e4SLinus Torvalds * NOTE: Should be similar to ethernet/eth.c. 1281da177e4SLinus Torvalds * 1291da177e4SLinus Torvalds * SANITY NOTE: This method is called when a packet is moving up the stack 1301da177e4SLinus Torvalds * towards userland. To get here, it would have already passed 1311da177e4SLinus Torvalds * through the ethernet/eth.c eth_type_trans() method. 1321da177e4SLinus Torvalds * SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be 1331da177e4SLinus Torvalds * stored UNALIGNED in the memory. RISC systems don't like 1341da177e4SLinus Torvalds * such cases very much... 1352029cc2cSPatrick McHardy * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be 1362029cc2cSPatrick McHardy * aligned, so there doesn't need to be any of the unaligned 1372029cc2cSPatrick McHardy * stuff. It has been commented out now... --Ben 1381da177e4SLinus Torvalds * 1391da177e4SLinus Torvalds */ 1401da177e4SLinus Torvalds int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, 141f2ccd8faSDavid S. Miller struct packet_type *ptype, struct net_device *orig_dev) 1421da177e4SLinus Torvalds { 143e7c243c9SEvgeniy Polyakov struct vlan_hdr *vhdr; 1449793241fSEric Dumazet struct vlan_rx_stats *rx_stats; 1459bb8582eSPatrick McHardy u16 vlan_id; 1469bb8582eSPatrick McHardy u16 vlan_tci; 1471da177e4SLinus Torvalds 1482029cc2cSPatrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 1492029cc2cSPatrick McHardy if (skb == NULL) 15031ffdbcbSPatrick McHardy goto err_free; 151e7c243c9SEvgeniy Polyakov 15231ffdbcbSPatrick McHardy if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) 15331ffdbcbSPatrick McHardy goto err_free; 154e7c243c9SEvgeniy Polyakov 15531ffdbcbSPatrick McHardy vhdr = (struct vlan_hdr *)skb->data; 1569bb8582eSPatrick McHardy vlan_tci = ntohs(vhdr->h_vlan_TCI); 1579bb8582eSPatrick McHardy vlan_id = vlan_tci & VLAN_VID_MASK; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds rcu_read_lock(); 1609bb8582eSPatrick McHardy skb->dev = __find_vlan_dev(dev, vlan_id); 1611da177e4SLinus Torvalds if (!skb->dev) { 1622029cc2cSPatrick McHardy pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n", 1639bb8582eSPatrick McHardy __func__, vlan_id, dev->name); 16431ffdbcbSPatrick McHardy goto err_unlock; 1651da177e4SLinus Torvalds } 1661da177e4SLinus Torvalds 1672dc85e91SEric Dumazet rx_stats = per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats, 1689793241fSEric Dumazet smp_processor_id()); 1699618e2ffSEric Dumazet u64_stats_update_begin(&rx_stats->syncp); 1709793241fSEric Dumazet rx_stats->rx_packets++; 1719793241fSEric Dumazet rx_stats->rx_bytes += skb->len; 1721da177e4SLinus Torvalds 173cbb042f9SHerbert Xu skb_pull_rcsum(skb, VLAN_HLEN); 174a388442cSStephen Hemminger 1759bb8582eSPatrick McHardy skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci); 1761da177e4SLinus Torvalds 17740f98e1aSPatrick McHardy pr_debug("%s: priority: %u for TCI: %hu\n", 1789bb8582eSPatrick McHardy __func__, skb->priority, vlan_tci); 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds switch (skb->pkt_type) { 1811da177e4SLinus Torvalds case PACKET_BROADCAST: /* Yeah, stats collect these together.. */ 1822029cc2cSPatrick McHardy /* stats->broadcast ++; // no such counter :-( */ 1831da177e4SLinus Torvalds break; 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds case PACKET_MULTICAST: 1869618e2ffSEric Dumazet rx_stats->rx_multicast++; 1871da177e4SLinus Torvalds break; 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds case PACKET_OTHERHOST: 1901da177e4SLinus Torvalds /* Our lower layer thinks this is not local, let's make sure. 1912029cc2cSPatrick McHardy * This allows the VLAN to have a different MAC than the 1922029cc2cSPatrick McHardy * underlying device, and still route correctly. 1931da177e4SLinus Torvalds */ 1942029cc2cSPatrick McHardy if (!compare_ether_addr(eth_hdr(skb)->h_dest, 1952029cc2cSPatrick McHardy skb->dev->dev_addr)) 1961da177e4SLinus Torvalds skb->pkt_type = PACKET_HOST; 1971da177e4SLinus Torvalds break; 1981da177e4SLinus Torvalds default: 1991da177e4SLinus Torvalds break; 2003ff50b79SStephen Hemminger } 2019618e2ffSEric Dumazet u64_stats_update_end(&rx_stats->syncp); 2021da177e4SLinus Torvalds 20391b4f954SPavel Emelyanov vlan_set_encap_proto(skb, vhdr); 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds skb = vlan_check_reorder_header(skb); 20631ffdbcbSPatrick McHardy if (!skb) { 2079793241fSEric Dumazet rx_stats->rx_errors++; 20831ffdbcbSPatrick McHardy goto err_unlock; 2091da177e4SLinus Torvalds } 21031ffdbcbSPatrick McHardy 21131ffdbcbSPatrick McHardy netif_rx(skb); 2121da177e4SLinus Torvalds rcu_read_unlock(); 21331ffdbcbSPatrick McHardy return NET_RX_SUCCESS; 21431ffdbcbSPatrick McHardy 21531ffdbcbSPatrick McHardy err_unlock: 21631ffdbcbSPatrick McHardy rcu_read_unlock(); 21731ffdbcbSPatrick McHardy err_free: 21831ffdbcbSPatrick McHardy kfree_skb(skb); 21931ffdbcbSPatrick McHardy return NET_RX_DROP; 2201da177e4SLinus Torvalds } 2211da177e4SLinus Torvalds 2229bb8582eSPatrick McHardy static inline u16 2232029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 2241da177e4SLinus Torvalds { 2252029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 2261da177e4SLinus Torvalds 2272029cc2cSPatrick McHardy mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; 2281da177e4SLinus Torvalds while (mp) { 2291da177e4SLinus Torvalds if (mp->priority == skb->priority) { 2302029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 2312029cc2cSPatrick McHardy * to mask correctly with the 2322029cc2cSPatrick McHardy * VLAN's TCI */ 2331da177e4SLinus Torvalds } 2341da177e4SLinus Torvalds mp = mp->next; 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds return 0; 2371da177e4SLinus Torvalds } 2381da177e4SLinus Torvalds 2391da177e4SLinus Torvalds /* 2401da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 2411da177e4SLinus Torvalds * 2421da177e4SLinus Torvalds * saddr=NULL means use device source address 2431da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 2441da177e4SLinus Torvalds * 2451da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 2461da177e4SLinus Torvalds * physical devices. 2471da177e4SLinus Torvalds */ 248ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 2493b04dddeSStephen Hemminger unsigned short type, 250ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 251ef3eb3e5SPatrick McHardy unsigned int len) 2521da177e4SLinus Torvalds { 2531da177e4SLinus Torvalds struct vlan_hdr *vhdr; 2541349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 2559bb8582eSPatrick McHardy u16 vlan_tci = 0; 2561349fe9aSPatrick McHardy int rc; 2571da177e4SLinus Torvalds 25811a100f8SPatrick McHardy if (WARN_ON(skb_headroom(skb) < dev->hard_header_len)) 25911a100f8SPatrick McHardy return -ENOSPC; 26011a100f8SPatrick McHardy 2611349fe9aSPatrick McHardy if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { 2621da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 2631da177e4SLinus Torvalds 2649bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 2659bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 2669bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds /* 269bf9ae538SOctavian Purdila * Set the protocol type. For a packet of type ETH_P_802_3/2 we 270bf9ae538SOctavian Purdila * put the length in here instead. 2711da177e4SLinus Torvalds */ 272bf9ae538SOctavian Purdila if (type != ETH_P_802_3 && type != ETH_P_802_2) 2731da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 2742029cc2cSPatrick McHardy else 2751da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 276279e172aSJerome Borsboom 277279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 2781349fe9aSPatrick McHardy type = ETH_P_8021Q; 2791349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 2801da177e4SLinus Torvalds } 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 2831da177e4SLinus Torvalds if (saddr == NULL) 2841da177e4SLinus Torvalds saddr = dev->dev_addr; 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds /* Now make the underlying real hard header */ 2871349fe9aSPatrick McHardy dev = vlan_dev_info(dev)->real_dev; 2881349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 2890c4e8581SStephen Hemminger if (rc > 0) 2901349fe9aSPatrick McHardy rc += vhdrlen; 2911da177e4SLinus Torvalds return rc; 2921da177e4SLinus Torvalds } 2931da177e4SLinus Torvalds 2946fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, 2956fef4c0cSStephen Hemminger struct net_device *dev) 2961da177e4SLinus Torvalds { 2972f8bc32bSEric Dumazet int i = skb_get_queue_mapping(skb); 2982f8bc32bSEric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 2991da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 3001a123a31SEric Dumazet unsigned int len; 3011a123a31SEric Dumazet int ret; 30255b01e86SDavid S. Miller 3031da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 3041da177e4SLinus Torvalds * 3051da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 3061da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 3071da177e4SLinus Torvalds */ 3086ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 3099dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { 310d80aa31bSPatrick McHardy unsigned int orig_headroom = skb_headroom(skb); 3119bb8582eSPatrick McHardy u16 vlan_tci; 3121da177e4SLinus Torvalds 3139dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_encap_on_xmit++; 3141da177e4SLinus Torvalds 3159bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3169bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3179bb8582eSPatrick McHardy skb = __vlan_put_tag(skb, vlan_tci); 3181da177e4SLinus Torvalds if (!skb) { 319450c4ea1SEric Dumazet txq->tx_dropped++; 320d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3211da177e4SLinus Torvalds } 3221da177e4SLinus Torvalds 3232029cc2cSPatrick McHardy if (orig_headroom < VLAN_HLEN) 3249dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; 3251da177e4SLinus Torvalds } 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds 3288a83a00bSArnd Bergmann skb_set_dev(skb, vlan_dev_info(dev)->real_dev); 3291a123a31SEric Dumazet len = skb->len; 3301a123a31SEric Dumazet ret = dev_queue_xmit(skb); 3311a123a31SEric Dumazet 3322d6c9ffcSEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 3331a123a31SEric Dumazet txq->tx_packets++; 3341a123a31SEric Dumazet txq->tx_bytes += len; 3351a123a31SEric Dumazet } else 3361a123a31SEric Dumazet txq->tx_dropped++; 3371a123a31SEric Dumazet 338cbbef5e1SPatrick McHardy return ret; 3391da177e4SLinus Torvalds } 3401da177e4SLinus Torvalds 3416fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, 342ef3eb3e5SPatrick McHardy struct net_device *dev) 3431da177e4SLinus Torvalds { 3442f8bc32bSEric Dumazet int i = skb_get_queue_mapping(skb); 3452f8bc32bSEric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 3469bb8582eSPatrick McHardy u16 vlan_tci; 3471a123a31SEric Dumazet unsigned int len; 3481a123a31SEric Dumazet int ret; 3491da177e4SLinus Torvalds 3509bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3519bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3529bb8582eSPatrick McHardy skb = __vlan_hwaccel_put_tag(skb, vlan_tci); 3531da177e4SLinus Torvalds 3549dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3551a123a31SEric Dumazet len = skb->len; 3561a123a31SEric Dumazet ret = dev_queue_xmit(skb); 3571a123a31SEric Dumazet 3582d6c9ffcSEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 3591a123a31SEric Dumazet txq->tx_packets++; 3601a123a31SEric Dumazet txq->tx_bytes += len; 3611a123a31SEric Dumazet } else 3621a123a31SEric Dumazet txq->tx_dropped++; 3631a123a31SEric Dumazet 364cbbef5e1SPatrick McHardy return ret; 3651da177e4SLinus Torvalds } 3661da177e4SLinus Torvalds 367669d3e0bSVasu Dev static u16 vlan_dev_select_queue(struct net_device *dev, struct sk_buff *skb) 368669d3e0bSVasu Dev { 369669d3e0bSVasu Dev struct net_device *rdev = vlan_dev_info(dev)->real_dev; 370669d3e0bSVasu Dev const struct net_device_ops *ops = rdev->netdev_ops; 371669d3e0bSVasu Dev 372669d3e0bSVasu Dev return ops->ndo_select_queue(rdev, skb); 373669d3e0bSVasu Dev } 374669d3e0bSVasu Dev 375ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 3761da177e4SLinus Torvalds { 3771da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 3781da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 3791da177e4SLinus Torvalds */ 3809dfebcc6SPatrick McHardy if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) 3811da177e4SLinus Torvalds return -ERANGE; 3821da177e4SLinus Torvalds 3831da177e4SLinus Torvalds dev->mtu = new_mtu; 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds return 0; 3861da177e4SLinus Torvalds } 3871da177e4SLinus Torvalds 388c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 3899bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 3901da177e4SLinus Torvalds { 3919dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 392b020cb48SPatrick McHardy 393b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 394b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 395b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 396b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 397b020cb48SPatrick McHardy 398b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 3991da177e4SLinus Torvalds } 4001da177e4SLinus Torvalds 401c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 4029bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 4031da177e4SLinus Torvalds { 4049dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4051da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 4061da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 40705423b24SEric Dumazet u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 410b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4111da177e4SLinus Torvalds while (mp) { 4121da177e4SLinus Torvalds if (mp->priority == skb_prio) { 413b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 414b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 415b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 416b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 417b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 4181da177e4SLinus Torvalds return 0; 4191da177e4SLinus Torvalds } 4201da177e4SLinus Torvalds mp = mp->next; 4211da177e4SLinus Torvalds } 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds /* Create a new mapping then. */ 424b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4251da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 426c17d8874SPatrick McHardy if (!np) 427c17d8874SPatrick McHardy return -ENOBUFS; 428c17d8874SPatrick McHardy 4291da177e4SLinus Torvalds np->next = mp; 4301da177e4SLinus Torvalds np->priority = skb_prio; 431b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 432b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 433b020cb48SPatrick McHardy if (vlan_qos) 434b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 4351da177e4SLinus Torvalds return 0; 4361da177e4SLinus Torvalds } 4371da177e4SLinus Torvalds 438a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 439b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 4401da177e4SLinus Torvalds { 441b3ce0325SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 442b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 443b3ce0325SPatrick McHardy 4445e756593SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | 4455e756593SPatrick McHardy VLAN_FLAG_LOOSE_BINDING)) 4461da177e4SLinus Torvalds return -EINVAL; 447b3ce0325SPatrick McHardy 448b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 44970c03b49SPatrick McHardy 45070c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 45170c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 45270c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 45370c03b49SPatrick McHardy else 45470c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 45570c03b49SPatrick McHardy } 456b3ce0325SPatrick McHardy return 0; 4571da177e4SLinus Torvalds } 4581da177e4SLinus Torvalds 459c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 4601da177e4SLinus Torvalds { 4619dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 4621da177e4SLinus Torvalds } 4631da177e4SLinus Torvalds 464ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 4651da177e4SLinus Torvalds { 4669dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4678c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 4688c979c26SPatrick McHardy int err; 4698c979c26SPatrick McHardy 4705e756593SPatrick McHardy if (!(real_dev->flags & IFF_UP) && 4715e756593SPatrick McHardy !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 4721da177e4SLinus Torvalds return -ENETDOWN; 4731da177e4SLinus Torvalds 4748c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 475a748ee24SJiri Pirko err = dev_uc_add(real_dev, dev->dev_addr); 4768c979c26SPatrick McHardy if (err < 0) 47789146504SWang Chen goto out; 4788c979c26SPatrick McHardy } 4798c979c26SPatrick McHardy 48089146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 48189146504SWang Chen err = dev_set_allmulti(real_dev, 1); 48289146504SWang Chen if (err < 0) 48389146504SWang Chen goto del_unicast; 48489146504SWang Chen } 48589146504SWang Chen if (dev->flags & IFF_PROMISC) { 48689146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 48789146504SWang Chen if (err < 0) 48889146504SWang Chen goto clear_allmulti; 48989146504SWang Chen } 49089146504SWang Chen 49189146504SWang Chen memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 4926c78dcbdSPatrick McHardy 49370c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 49470c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 49570c03b49SPatrick McHardy 496adc667e8SJay Vosburgh netif_carrier_on(dev); 4971da177e4SLinus Torvalds return 0; 49889146504SWang Chen 49989146504SWang Chen clear_allmulti: 50089146504SWang Chen if (dev->flags & IFF_ALLMULTI) 50189146504SWang Chen dev_set_allmulti(real_dev, -1); 50289146504SWang Chen del_unicast: 50389146504SWang Chen if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 504a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 50589146504SWang Chen out: 506adc667e8SJay Vosburgh netif_carrier_off(dev); 50789146504SWang Chen return err; 5081da177e4SLinus Torvalds } 5091da177e4SLinus Torvalds 510ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 5111da177e4SLinus Torvalds { 51270c03b49SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 51370c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 51470c03b49SPatrick McHardy 51570c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 51670c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 5178c979c26SPatrick McHardy 51856addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 519a748ee24SJiri Pirko dev_uc_unsync(real_dev, dev); 5206c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5216c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 5226c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5236c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 5246c78dcbdSPatrick McHardy 5258c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 526a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 5278c979c26SPatrick McHardy 528adc667e8SJay Vosburgh netif_carrier_off(dev); 5291da177e4SLinus Torvalds return 0; 5301da177e4SLinus Torvalds } 5311da177e4SLinus Torvalds 532ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 53339aaac11SPatrick McHardy { 5349dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 53539aaac11SPatrick McHardy struct sockaddr *addr = p; 53639aaac11SPatrick McHardy int err; 53739aaac11SPatrick McHardy 53839aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 53939aaac11SPatrick McHardy return -EADDRNOTAVAIL; 54039aaac11SPatrick McHardy 54139aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 54239aaac11SPatrick McHardy goto out; 54339aaac11SPatrick McHardy 54439aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 545a748ee24SJiri Pirko err = dev_uc_add(real_dev, addr->sa_data); 54639aaac11SPatrick McHardy if (err < 0) 54739aaac11SPatrick McHardy return err; 54839aaac11SPatrick McHardy } 54939aaac11SPatrick McHardy 55039aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 551a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 55239aaac11SPatrick McHardy 55339aaac11SPatrick McHardy out: 55439aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 55539aaac11SPatrick McHardy return 0; 55639aaac11SPatrick McHardy } 55739aaac11SPatrick McHardy 558ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5591da177e4SLinus Torvalds { 5609dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 561656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 5621da177e4SLinus Torvalds struct ifreq ifrr; 5631da177e4SLinus Torvalds int err = -EOPNOTSUPP; 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 5661da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds switch (cmd) { 5691da177e4SLinus Torvalds case SIOCGMIIPHY: 5701da177e4SLinus Torvalds case SIOCGMIIREG: 5711da177e4SLinus Torvalds case SIOCSMIIREG: 572656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 573656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 5741da177e4SLinus Torvalds break; 5751da177e4SLinus Torvalds } 5761da177e4SLinus Torvalds 5771da177e4SLinus Torvalds if (!err) 5781da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvalds return err; 5811da177e4SLinus Torvalds } 5821da177e4SLinus Torvalds 583cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 584cc883d16SFrank Blaschka { 585cc883d16SFrank Blaschka struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 586cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 587cc883d16SFrank Blaschka int err = 0; 588cc883d16SFrank Blaschka 589cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 5909d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 591cc883d16SFrank Blaschka 592cc883d16SFrank Blaschka return err; 593cc883d16SFrank Blaschka } 594cc883d16SFrank Blaschka 595b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 596b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 597b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 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 rc = 0; 602b85daa53SVasu Dev 603b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 604b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 605b85daa53SVasu Dev 606b85daa53SVasu Dev return rc; 607b85daa53SVasu Dev } 608b85daa53SVasu Dev 609b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 610b85daa53SVasu Dev { 611b85daa53SVasu Dev struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 612b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 613b85daa53SVasu Dev int len = 0; 614b85daa53SVasu Dev 615b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 616b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 617b85daa53SVasu Dev 618b85daa53SVasu Dev return len; 619b85daa53SVasu Dev } 6200af46d99SYi Zou 6210af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 6220af46d99SYi Zou { 6230af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6240af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6250af46d99SYi Zou int rc = -EINVAL; 6260af46d99SYi Zou 6270af46d99SYi Zou if (ops->ndo_fcoe_enable) 6280af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 6290af46d99SYi Zou return rc; 6300af46d99SYi Zou } 6310af46d99SYi Zou 6320af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 6330af46d99SYi Zou { 6340af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6350af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6360af46d99SYi Zou int rc = -EINVAL; 6370af46d99SYi Zou 6380af46d99SYi Zou if (ops->ndo_fcoe_disable) 6390af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 6400af46d99SYi Zou return rc; 6410af46d99SYi Zou } 642d6534799SYi Zou 643d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 644d6534799SYi Zou { 645d6534799SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 646d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 647d6534799SYi Zou int rc = -EINVAL; 648d6534799SYi Zou 649d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 650d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 651d6534799SYi Zou return rc; 652d6534799SYi Zou } 653b85daa53SVasu Dev #endif 654b85daa53SVasu Dev 655ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 6566c78dcbdSPatrick McHardy { 6579dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6586c78dcbdSPatrick McHardy 6596c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 6606c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 6616c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 6626c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 6636c78dcbdSPatrick McHardy } 6646c78dcbdSPatrick McHardy 665e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 6661da177e4SLinus Torvalds { 6679dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 668a748ee24SJiri Pirko dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 6691da177e4SLinus Torvalds } 670ef3eb3e5SPatrick McHardy 671ef3eb3e5SPatrick McHardy /* 672ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 673ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 674ef3eb3e5SPatrick McHardy * separate class since they always nest. 675ef3eb3e5SPatrick McHardy */ 676ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 677cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 678ef3eb3e5SPatrick McHardy 679e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 680e8a0464cSDavid S. Miller struct netdev_queue *txq, 681e8a0464cSDavid S. Miller void *_subclass) 682c773e847SDavid S. Miller { 683c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 684e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 685e8a0464cSDavid S. Miller *(int *)_subclass); 686c773e847SDavid S. Miller } 687c773e847SDavid S. Miller 688c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 689c773e847SDavid S. Miller { 690cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 691cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 692cf508b12SDavid S. Miller subclass); 693e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 694c773e847SDavid S. Miller } 695c773e847SDavid S. Miller 696ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 697ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 698ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 699ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 700ef3eb3e5SPatrick McHardy }; 701ef3eb3e5SPatrick McHardy 702669d3e0bSVasu Dev static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops, 703669d3e0bSVasu Dev vlan_netdev_ops_sq, vlan_netdev_accel_ops_sq; 704f7d1b9f5SEric Dumazet 705ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 706ef3eb3e5SPatrick McHardy { 7079dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 708ef3eb3e5SPatrick McHardy int subclass = 0; 709ef3eb3e5SPatrick McHardy 710adc667e8SJay Vosburgh netif_carrier_off(dev); 711adc667e8SJay Vosburgh 712ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 713194dbcc8SJohn Fastabend dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | 714194dbcc8SJohn Fastabend IFF_MASTER | IFF_SLAVE); 715ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 716ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 717ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 718ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 719ef3eb3e5SPatrick McHardy 720289c79a4SPatrick McHardy dev->features |= real_dev->features & real_dev->vlan_features; 7211ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 7225fb13570SPatrick McHardy 723ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 724ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 725ef3eb3e5SPatrick McHardy 726ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 727ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 728ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 729ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 730ef3eb3e5SPatrick McHardy 731b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 732b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 733b85daa53SVasu Dev #endif 734b85daa53SVasu Dev 735ef3eb3e5SPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_TX) { 736ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 737ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 738669d3e0bSVasu Dev if (real_dev->netdev_ops->ndo_select_queue) 739669d3e0bSVasu Dev dev->netdev_ops = &vlan_netdev_accel_ops_sq; 740669d3e0bSVasu Dev else 741f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_accel_ops; 742ef3eb3e5SPatrick McHardy } else { 743ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 744ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 745669d3e0bSVasu Dev if (real_dev->netdev_ops->ndo_select_queue) 746669d3e0bSVasu Dev dev->netdev_ops = &vlan_netdev_ops_sq; 747669d3e0bSVasu Dev else 748f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 749ef3eb3e5SPatrick McHardy } 750ef3eb3e5SPatrick McHardy 75126a25239SJoonwoo Park if (is_vlan_dev(real_dev)) 752ef3eb3e5SPatrick McHardy subclass = 1; 753ef3eb3e5SPatrick McHardy 754c773e847SDavid S. Miller vlan_dev_set_lockdep_class(dev, subclass); 7559793241fSEric Dumazet 7569793241fSEric Dumazet vlan_dev_info(dev)->vlan_rx_stats = alloc_percpu(struct vlan_rx_stats); 7579793241fSEric Dumazet if (!vlan_dev_info(dev)->vlan_rx_stats) 7589793241fSEric Dumazet return -ENOMEM; 7599793241fSEric Dumazet 760ef3eb3e5SPatrick McHardy return 0; 761ef3eb3e5SPatrick McHardy } 762ef3eb3e5SPatrick McHardy 76323556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 76423556323SPavel Emelyanov { 76523556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 76623556323SPavel Emelyanov struct vlan_dev_info *vlan = vlan_dev_info(dev); 76723556323SPavel Emelyanov int i; 76823556323SPavel Emelyanov 7699793241fSEric Dumazet free_percpu(vlan->vlan_rx_stats); 7709793241fSEric Dumazet vlan->vlan_rx_stats = NULL; 77123556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 77223556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 77323556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 77423556323SPavel Emelyanov kfree(pm); 77523556323SPavel Emelyanov } 77623556323SPavel Emelyanov } 77723556323SPavel Emelyanov } 77823556323SPavel Emelyanov 779b3020061SStephen Hemminger static int vlan_ethtool_get_settings(struct net_device *dev, 780b3020061SStephen Hemminger struct ethtool_cmd *cmd) 781b3020061SStephen Hemminger { 782b3020061SStephen Hemminger const struct vlan_dev_info *vlan = vlan_dev_info(dev); 783b1b67dd4SPatrick McHardy return dev_ethtool_get_settings(vlan->real_dev, cmd); 784b3020061SStephen Hemminger } 785b3020061SStephen Hemminger 786b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 787b3020061SStephen Hemminger struct ethtool_drvinfo *info) 788b3020061SStephen Hemminger { 789b3020061SStephen Hemminger strcpy(info->driver, vlan_fullname); 790b3020061SStephen Hemminger strcpy(info->version, vlan_version); 791b3020061SStephen Hemminger strcpy(info->fw_version, "N/A"); 792b3020061SStephen Hemminger } 793b3020061SStephen Hemminger 79475b8846aSPatrick McHardy static u32 vlan_ethtool_get_rx_csum(struct net_device *dev) 79575b8846aSPatrick McHardy { 79675b8846aSPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 797b1b67dd4SPatrick McHardy return dev_ethtool_get_rx_csum(vlan->real_dev); 79875b8846aSPatrick McHardy } 79975b8846aSPatrick McHardy 80019b9a4e2SPatrick McHardy static u32 vlan_ethtool_get_flags(struct net_device *dev) 80119b9a4e2SPatrick McHardy { 80219b9a4e2SPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 803b1b67dd4SPatrick McHardy return dev_ethtool_get_flags(vlan->real_dev); 80419b9a4e2SPatrick McHardy } 80519b9a4e2SPatrick McHardy 80628172739SEric Dumazet static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 8079793241fSEric Dumazet { 80828172739SEric Dumazet dev_txq_stats_fold(dev, (struct net_device_stats *)stats); 8099793241fSEric Dumazet 8109793241fSEric Dumazet if (vlan_dev_info(dev)->vlan_rx_stats) { 8119618e2ffSEric Dumazet struct vlan_rx_stats *p, accum = {0}; 8129793241fSEric Dumazet int i; 8139793241fSEric Dumazet 8149793241fSEric Dumazet for_each_possible_cpu(i) { 8159618e2ffSEric Dumazet u64 rxpackets, rxbytes, rxmulticast; 8169618e2ffSEric Dumazet unsigned int start; 8179618e2ffSEric Dumazet 8189793241fSEric Dumazet p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i); 8199618e2ffSEric Dumazet do { 8209618e2ffSEric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 8219618e2ffSEric Dumazet rxpackets = p->rx_packets; 8229618e2ffSEric Dumazet rxbytes = p->rx_bytes; 8239618e2ffSEric Dumazet rxmulticast = p->rx_multicast; 8249618e2ffSEric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 8259618e2ffSEric Dumazet accum.rx_packets += rxpackets; 8269618e2ffSEric Dumazet accum.rx_bytes += rxbytes; 8279618e2ffSEric Dumazet accum.rx_multicast += rxmulticast; 8289618e2ffSEric Dumazet /* rx_errors is an ulong, not protected by syncp */ 8299618e2ffSEric Dumazet accum.rx_errors += p->rx_errors; 8309793241fSEric Dumazet } 8319618e2ffSEric Dumazet stats->rx_packets = accum.rx_packets; 8329618e2ffSEric Dumazet stats->rx_bytes = accum.rx_bytes; 8339618e2ffSEric Dumazet stats->rx_errors = accum.rx_errors; 8349618e2ffSEric Dumazet stats->multicast = accum.rx_multicast; 8359793241fSEric Dumazet } 8369793241fSEric Dumazet return stats; 8379793241fSEric Dumazet } 8389793241fSEric Dumazet 83975b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 840b3020061SStephen Hemminger .get_settings = vlan_ethtool_get_settings, 841b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 84275b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 84375b8846aSPatrick McHardy .get_rx_csum = vlan_ethtool_get_rx_csum, 84419b9a4e2SPatrick McHardy .get_flags = vlan_ethtool_get_flags, 84575b8846aSPatrick McHardy }; 84675b8846aSPatrick McHardy 847656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 848656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 849656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 850656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 851656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 852656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 853f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 854f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 855f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 856f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 857f7d1b9f5SEric Dumazet .ndo_set_multicast_list = vlan_dev_set_rx_mode, 858f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 859f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 860cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 8619618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 862b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 863b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 864b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 8650af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 8660af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 867d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 868b85daa53SVasu Dev #endif 869f7d1b9f5SEric Dumazet }; 870f7d1b9f5SEric Dumazet 871f7d1b9f5SEric Dumazet static const struct net_device_ops vlan_netdev_accel_ops = { 872f7d1b9f5SEric Dumazet .ndo_change_mtu = vlan_dev_change_mtu, 873f7d1b9f5SEric Dumazet .ndo_init = vlan_dev_init, 874f7d1b9f5SEric Dumazet .ndo_uninit = vlan_dev_uninit, 875f7d1b9f5SEric Dumazet .ndo_open = vlan_dev_open, 876f7d1b9f5SEric Dumazet .ndo_stop = vlan_dev_stop, 877f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, 878656299f7SStephen Hemminger .ndo_validate_addr = eth_validate_addr, 879656299f7SStephen Hemminger .ndo_set_mac_address = vlan_dev_set_mac_address, 880656299f7SStephen Hemminger .ndo_set_rx_mode = vlan_dev_set_rx_mode, 881656299f7SStephen Hemminger .ndo_set_multicast_list = vlan_dev_set_rx_mode, 882656299f7SStephen Hemminger .ndo_change_rx_flags = vlan_dev_change_rx_flags, 883656299f7SStephen Hemminger .ndo_do_ioctl = vlan_dev_ioctl, 884cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 8859618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 886b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 887b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 888b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 8890af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 8900af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 891d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 892b85daa53SVasu Dev #endif 893656299f7SStephen Hemminger }; 894656299f7SStephen Hemminger 895669d3e0bSVasu Dev static const struct net_device_ops vlan_netdev_ops_sq = { 896669d3e0bSVasu Dev .ndo_select_queue = vlan_dev_select_queue, 897669d3e0bSVasu Dev .ndo_change_mtu = vlan_dev_change_mtu, 898669d3e0bSVasu Dev .ndo_init = vlan_dev_init, 899669d3e0bSVasu Dev .ndo_uninit = vlan_dev_uninit, 900669d3e0bSVasu Dev .ndo_open = vlan_dev_open, 901669d3e0bSVasu Dev .ndo_stop = vlan_dev_stop, 902669d3e0bSVasu Dev .ndo_start_xmit = vlan_dev_hard_start_xmit, 903669d3e0bSVasu Dev .ndo_validate_addr = eth_validate_addr, 904669d3e0bSVasu Dev .ndo_set_mac_address = vlan_dev_set_mac_address, 905669d3e0bSVasu Dev .ndo_set_rx_mode = vlan_dev_set_rx_mode, 906669d3e0bSVasu Dev .ndo_set_multicast_list = vlan_dev_set_rx_mode, 907669d3e0bSVasu Dev .ndo_change_rx_flags = vlan_dev_change_rx_flags, 908669d3e0bSVasu Dev .ndo_do_ioctl = vlan_dev_ioctl, 909669d3e0bSVasu Dev .ndo_neigh_setup = vlan_dev_neigh_setup, 9109618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 911669d3e0bSVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 912669d3e0bSVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 913669d3e0bSVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 914669d3e0bSVasu Dev .ndo_fcoe_enable = vlan_dev_fcoe_enable, 915669d3e0bSVasu Dev .ndo_fcoe_disable = vlan_dev_fcoe_disable, 916669d3e0bSVasu Dev .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 917669d3e0bSVasu Dev #endif 918669d3e0bSVasu Dev }; 919669d3e0bSVasu Dev 920669d3e0bSVasu Dev static const struct net_device_ops vlan_netdev_accel_ops_sq = { 921669d3e0bSVasu Dev .ndo_select_queue = vlan_dev_select_queue, 922669d3e0bSVasu Dev .ndo_change_mtu = vlan_dev_change_mtu, 923669d3e0bSVasu Dev .ndo_init = vlan_dev_init, 924669d3e0bSVasu Dev .ndo_uninit = vlan_dev_uninit, 925669d3e0bSVasu Dev .ndo_open = vlan_dev_open, 926669d3e0bSVasu Dev .ndo_stop = vlan_dev_stop, 927669d3e0bSVasu Dev .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, 928669d3e0bSVasu Dev .ndo_validate_addr = eth_validate_addr, 929669d3e0bSVasu Dev .ndo_set_mac_address = vlan_dev_set_mac_address, 930669d3e0bSVasu Dev .ndo_set_rx_mode = vlan_dev_set_rx_mode, 931669d3e0bSVasu Dev .ndo_set_multicast_list = vlan_dev_set_rx_mode, 932669d3e0bSVasu Dev .ndo_change_rx_flags = vlan_dev_change_rx_flags, 933669d3e0bSVasu Dev .ndo_do_ioctl = vlan_dev_ioctl, 934669d3e0bSVasu Dev .ndo_neigh_setup = vlan_dev_neigh_setup, 9359618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 936669d3e0bSVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 937669d3e0bSVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 938669d3e0bSVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 939669d3e0bSVasu Dev .ndo_fcoe_enable = vlan_dev_fcoe_enable, 940669d3e0bSVasu Dev .ndo_fcoe_disable = vlan_dev_fcoe_disable, 941669d3e0bSVasu Dev .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 942669d3e0bSVasu Dev #endif 943669d3e0bSVasu Dev }; 944669d3e0bSVasu Dev 945ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 946ef3eb3e5SPatrick McHardy { 947ef3eb3e5SPatrick McHardy ether_setup(dev); 948ef3eb3e5SPatrick McHardy 949ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 95093f154b5SEric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 951ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 952ef3eb3e5SPatrick McHardy 953656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 954ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 95575b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 956ef3eb3e5SPatrick McHardy 957ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 958ef3eb3e5SPatrick McHardy } 959