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; 145ad1afb00SPedro Garcia struct net_device *vlan_dev; 1469bb8582eSPatrick McHardy u16 vlan_id; 1479bb8582eSPatrick McHardy u16 vlan_tci; 1481da177e4SLinus Torvalds 1492029cc2cSPatrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 1502029cc2cSPatrick McHardy if (skb == NULL) 15131ffdbcbSPatrick McHardy goto err_free; 152e7c243c9SEvgeniy Polyakov 15331ffdbcbSPatrick McHardy if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) 15431ffdbcbSPatrick McHardy goto err_free; 155e7c243c9SEvgeniy Polyakov 15631ffdbcbSPatrick McHardy vhdr = (struct vlan_hdr *)skb->data; 1579bb8582eSPatrick McHardy vlan_tci = ntohs(vhdr->h_vlan_TCI); 1589bb8582eSPatrick McHardy vlan_id = vlan_tci & VLAN_VID_MASK; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds rcu_read_lock(); 161ad1afb00SPedro Garcia vlan_dev = __find_vlan_dev(dev, vlan_id); 162ad1afb00SPedro Garcia 163ad1afb00SPedro Garcia /* If the VLAN device is defined, we use it. 164ad1afb00SPedro Garcia * If not, and the VID is 0, it is a 802.1p packet (not 165ad1afb00SPedro Garcia * really a VLAN), so we will just netif_rx it later to the 166ad1afb00SPedro Garcia * original interface, but with the skb->proto set to the 167ad1afb00SPedro Garcia * wrapped proto: we do nothing here. 168ad1afb00SPedro Garcia */ 169ad1afb00SPedro Garcia 170ad1afb00SPedro Garcia if (!vlan_dev) { 171ad1afb00SPedro Garcia if (vlan_id) { 1722029cc2cSPatrick McHardy pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n", 1739bb8582eSPatrick McHardy __func__, vlan_id, dev->name); 17431ffdbcbSPatrick McHardy goto err_unlock; 1751da177e4SLinus Torvalds } 176ad1afb00SPedro Garcia rx_stats = NULL; 177ad1afb00SPedro Garcia } else { 178ad1afb00SPedro Garcia skb->dev = vlan_dev; 1791da177e4SLinus Torvalds 1802dc85e91SEric Dumazet rx_stats = per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats, 1819793241fSEric Dumazet smp_processor_id()); 1829618e2ffSEric Dumazet u64_stats_update_begin(&rx_stats->syncp); 1839793241fSEric Dumazet rx_stats->rx_packets++; 1849793241fSEric Dumazet rx_stats->rx_bytes += skb->len; 1851da177e4SLinus Torvalds 1869bb8582eSPatrick McHardy skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci); 1871da177e4SLinus Torvalds 18840f98e1aSPatrick McHardy pr_debug("%s: priority: %u for TCI: %hu\n", 1899bb8582eSPatrick McHardy __func__, skb->priority, vlan_tci); 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds switch (skb->pkt_type) { 192ad1afb00SPedro Garcia case PACKET_BROADCAST: 193ad1afb00SPedro Garcia /* Yeah, stats collect these together.. */ 1942029cc2cSPatrick McHardy /* stats->broadcast ++; // no such counter :-( */ 1951da177e4SLinus Torvalds break; 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds case PACKET_MULTICAST: 1989618e2ffSEric Dumazet rx_stats->rx_multicast++; 1991da177e4SLinus Torvalds break; 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds case PACKET_OTHERHOST: 202ad1afb00SPedro Garcia /* Our lower layer thinks this is not local, let's make 203ad1afb00SPedro Garcia * sure. 2042029cc2cSPatrick McHardy * This allows the VLAN to have a different MAC than the 2052029cc2cSPatrick McHardy * underlying device, and still route correctly. 2061da177e4SLinus Torvalds */ 2072029cc2cSPatrick McHardy if (!compare_ether_addr(eth_hdr(skb)->h_dest, 2082029cc2cSPatrick McHardy skb->dev->dev_addr)) 2091da177e4SLinus Torvalds skb->pkt_type = PACKET_HOST; 2101da177e4SLinus Torvalds break; 2111da177e4SLinus Torvalds default: 2121da177e4SLinus Torvalds break; 2133ff50b79SStephen Hemminger } 2149618e2ffSEric Dumazet u64_stats_update_end(&rx_stats->syncp); 215ad1afb00SPedro Garcia } 2161da177e4SLinus Torvalds 217ad1afb00SPedro Garcia skb_pull_rcsum(skb, VLAN_HLEN); 21891b4f954SPavel Emelyanov vlan_set_encap_proto(skb, vhdr); 2191da177e4SLinus Torvalds 220ad1afb00SPedro Garcia if (vlan_dev) { 2211da177e4SLinus Torvalds skb = vlan_check_reorder_header(skb); 22231ffdbcbSPatrick McHardy if (!skb) { 2239793241fSEric Dumazet rx_stats->rx_errors++; 22431ffdbcbSPatrick McHardy goto err_unlock; 2251da177e4SLinus Torvalds } 226ad1afb00SPedro Garcia } 22731ffdbcbSPatrick McHardy 22831ffdbcbSPatrick McHardy netif_rx(skb); 2291da177e4SLinus Torvalds rcu_read_unlock(); 23031ffdbcbSPatrick McHardy return NET_RX_SUCCESS; 23131ffdbcbSPatrick McHardy 23231ffdbcbSPatrick McHardy err_unlock: 23331ffdbcbSPatrick McHardy rcu_read_unlock(); 23431ffdbcbSPatrick McHardy err_free: 23531ffdbcbSPatrick McHardy kfree_skb(skb); 23631ffdbcbSPatrick McHardy return NET_RX_DROP; 2371da177e4SLinus Torvalds } 2381da177e4SLinus Torvalds 2399bb8582eSPatrick McHardy static inline u16 2402029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 2411da177e4SLinus Torvalds { 2422029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 2431da177e4SLinus Torvalds 2442029cc2cSPatrick McHardy mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; 2451da177e4SLinus Torvalds while (mp) { 2461da177e4SLinus Torvalds if (mp->priority == skb->priority) { 2472029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 2482029cc2cSPatrick McHardy * to mask correctly with the 2492029cc2cSPatrick McHardy * VLAN's TCI */ 2501da177e4SLinus Torvalds } 2511da177e4SLinus Torvalds mp = mp->next; 2521da177e4SLinus Torvalds } 2531da177e4SLinus Torvalds return 0; 2541da177e4SLinus Torvalds } 2551da177e4SLinus Torvalds 2561da177e4SLinus Torvalds /* 2571da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 2581da177e4SLinus Torvalds * 2591da177e4SLinus Torvalds * saddr=NULL means use device source address 2601da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 2611da177e4SLinus Torvalds * 2621da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 2631da177e4SLinus Torvalds * physical devices. 2641da177e4SLinus Torvalds */ 265ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 2663b04dddeSStephen Hemminger unsigned short type, 267ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 268ef3eb3e5SPatrick McHardy unsigned int len) 2691da177e4SLinus Torvalds { 2701da177e4SLinus Torvalds struct vlan_hdr *vhdr; 2711349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 2729bb8582eSPatrick McHardy u16 vlan_tci = 0; 2731349fe9aSPatrick McHardy int rc; 2741da177e4SLinus Torvalds 27511a100f8SPatrick McHardy if (WARN_ON(skb_headroom(skb) < dev->hard_header_len)) 27611a100f8SPatrick McHardy return -ENOSPC; 27711a100f8SPatrick McHardy 2781349fe9aSPatrick McHardy if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { 2791da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 2801da177e4SLinus Torvalds 2819bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 2829bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 2839bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds /* 286bf9ae538SOctavian Purdila * Set the protocol type. For a packet of type ETH_P_802_3/2 we 287bf9ae538SOctavian Purdila * put the length in here instead. 2881da177e4SLinus Torvalds */ 289bf9ae538SOctavian Purdila if (type != ETH_P_802_3 && type != ETH_P_802_2) 2901da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 2912029cc2cSPatrick McHardy else 2921da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 293279e172aSJerome Borsboom 294279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 2951349fe9aSPatrick McHardy type = ETH_P_8021Q; 2961349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 2971da177e4SLinus Torvalds } 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 3001da177e4SLinus Torvalds if (saddr == NULL) 3011da177e4SLinus Torvalds saddr = dev->dev_addr; 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds /* Now make the underlying real hard header */ 3041349fe9aSPatrick McHardy dev = vlan_dev_info(dev)->real_dev; 3051349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 3060c4e8581SStephen Hemminger if (rc > 0) 3071349fe9aSPatrick McHardy rc += vhdrlen; 3081da177e4SLinus Torvalds return rc; 3091da177e4SLinus Torvalds } 3101da177e4SLinus Torvalds 3116fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, 3126fef4c0cSStephen Hemminger struct net_device *dev) 3131da177e4SLinus Torvalds { 3142f8bc32bSEric Dumazet int i = skb_get_queue_mapping(skb); 3152f8bc32bSEric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 3161da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 3171a123a31SEric Dumazet unsigned int len; 3181a123a31SEric Dumazet int ret; 31955b01e86SDavid S. Miller 3201da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 3211da177e4SLinus Torvalds * 3221da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 3231da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 3241da177e4SLinus Torvalds */ 3256ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 3269dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { 327d80aa31bSPatrick McHardy unsigned int orig_headroom = skb_headroom(skb); 3289bb8582eSPatrick McHardy u16 vlan_tci; 3291da177e4SLinus Torvalds 3309dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_encap_on_xmit++; 3311da177e4SLinus Torvalds 3329bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3339bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3349bb8582eSPatrick McHardy skb = __vlan_put_tag(skb, vlan_tci); 3351da177e4SLinus Torvalds if (!skb) { 336450c4ea1SEric Dumazet txq->tx_dropped++; 337d80aa31bSPatrick McHardy return NETDEV_TX_OK; 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 3402029cc2cSPatrick McHardy if (orig_headroom < VLAN_HLEN) 3419dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvalds 3458a83a00bSArnd Bergmann skb_set_dev(skb, vlan_dev_info(dev)->real_dev); 3461a123a31SEric Dumazet len = skb->len; 3471a123a31SEric Dumazet ret = dev_queue_xmit(skb); 3481a123a31SEric Dumazet 3492d6c9ffcSEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 3501a123a31SEric Dumazet txq->tx_packets++; 3511a123a31SEric Dumazet txq->tx_bytes += len; 3521a123a31SEric Dumazet } else 3531a123a31SEric Dumazet txq->tx_dropped++; 3541a123a31SEric Dumazet 355cbbef5e1SPatrick McHardy return ret; 3561da177e4SLinus Torvalds } 3571da177e4SLinus Torvalds 3586fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, 359ef3eb3e5SPatrick McHardy struct net_device *dev) 3601da177e4SLinus Torvalds { 3612f8bc32bSEric Dumazet int i = skb_get_queue_mapping(skb); 3622f8bc32bSEric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 3639bb8582eSPatrick McHardy u16 vlan_tci; 3641a123a31SEric Dumazet unsigned int len; 3651a123a31SEric Dumazet int ret; 3661da177e4SLinus Torvalds 3679bb8582eSPatrick McHardy vlan_tci = vlan_dev_info(dev)->vlan_id; 3689bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 3699bb8582eSPatrick McHardy skb = __vlan_hwaccel_put_tag(skb, vlan_tci); 3701da177e4SLinus Torvalds 3719dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 3721a123a31SEric Dumazet len = skb->len; 3731a123a31SEric Dumazet ret = dev_queue_xmit(skb); 3741a123a31SEric Dumazet 3752d6c9ffcSEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 3761a123a31SEric Dumazet txq->tx_packets++; 3771a123a31SEric Dumazet txq->tx_bytes += len; 3781a123a31SEric Dumazet } else 3791a123a31SEric Dumazet txq->tx_dropped++; 3801a123a31SEric Dumazet 381cbbef5e1SPatrick McHardy return ret; 3821da177e4SLinus Torvalds } 3831da177e4SLinus Torvalds 384669d3e0bSVasu Dev static u16 vlan_dev_select_queue(struct net_device *dev, struct sk_buff *skb) 385669d3e0bSVasu Dev { 386669d3e0bSVasu Dev struct net_device *rdev = vlan_dev_info(dev)->real_dev; 387669d3e0bSVasu Dev const struct net_device_ops *ops = rdev->netdev_ops; 388669d3e0bSVasu Dev 389669d3e0bSVasu Dev return ops->ndo_select_queue(rdev, skb); 390669d3e0bSVasu Dev } 391669d3e0bSVasu Dev 392ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 3931da177e4SLinus Torvalds { 3941da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 3951da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 3961da177e4SLinus Torvalds */ 3979dfebcc6SPatrick McHardy if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) 3981da177e4SLinus Torvalds return -ERANGE; 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds dev->mtu = new_mtu; 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds return 0; 4031da177e4SLinus Torvalds } 4041da177e4SLinus Torvalds 405c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 4069bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 4071da177e4SLinus Torvalds { 4089dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 409b020cb48SPatrick McHardy 410b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 411b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 412b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 413b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 414b020cb48SPatrick McHardy 415b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 418c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 4199bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 4201da177e4SLinus Torvalds { 4219dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4221da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 4231da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 42405423b24SEric Dumazet u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 427b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4281da177e4SLinus Torvalds while (mp) { 4291da177e4SLinus Torvalds if (mp->priority == skb_prio) { 430b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 431b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 432b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 433b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 434b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 4351da177e4SLinus Torvalds return 0; 4361da177e4SLinus Torvalds } 4371da177e4SLinus Torvalds mp = mp->next; 4381da177e4SLinus Torvalds } 4391da177e4SLinus Torvalds 4401da177e4SLinus Torvalds /* Create a new mapping then. */ 441b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4421da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 443c17d8874SPatrick McHardy if (!np) 444c17d8874SPatrick McHardy return -ENOBUFS; 445c17d8874SPatrick McHardy 4461da177e4SLinus Torvalds np->next = mp; 4471da177e4SLinus Torvalds np->priority = skb_prio; 448b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 449b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 450b020cb48SPatrick McHardy if (vlan_qos) 451b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 4521da177e4SLinus Torvalds return 0; 4531da177e4SLinus Torvalds } 4541da177e4SLinus Torvalds 455a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 456b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 4571da177e4SLinus Torvalds { 458b3ce0325SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 459b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 460b3ce0325SPatrick McHardy 4615e756593SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | 4625e756593SPatrick McHardy VLAN_FLAG_LOOSE_BINDING)) 4631da177e4SLinus Torvalds return -EINVAL; 464b3ce0325SPatrick McHardy 465b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 46670c03b49SPatrick McHardy 46770c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 46870c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 46970c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 47070c03b49SPatrick McHardy else 47170c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 47270c03b49SPatrick McHardy } 473b3ce0325SPatrick McHardy return 0; 4741da177e4SLinus Torvalds } 4751da177e4SLinus Torvalds 476c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 4771da177e4SLinus Torvalds { 4789dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 4791da177e4SLinus Torvalds } 4801da177e4SLinus Torvalds 481ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 4821da177e4SLinus Torvalds { 4839dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4848c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 4858c979c26SPatrick McHardy int err; 4868c979c26SPatrick McHardy 4875e756593SPatrick McHardy if (!(real_dev->flags & IFF_UP) && 4885e756593SPatrick McHardy !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 4891da177e4SLinus Torvalds return -ENETDOWN; 4901da177e4SLinus Torvalds 4918c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 492a748ee24SJiri Pirko err = dev_uc_add(real_dev, dev->dev_addr); 4938c979c26SPatrick McHardy if (err < 0) 49489146504SWang Chen goto out; 4958c979c26SPatrick McHardy } 4968c979c26SPatrick McHardy 49789146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 49889146504SWang Chen err = dev_set_allmulti(real_dev, 1); 49989146504SWang Chen if (err < 0) 50089146504SWang Chen goto del_unicast; 50189146504SWang Chen } 50289146504SWang Chen if (dev->flags & IFF_PROMISC) { 50389146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 50489146504SWang Chen if (err < 0) 50589146504SWang Chen goto clear_allmulti; 50689146504SWang Chen } 50789146504SWang Chen 50889146504SWang Chen memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 5096c78dcbdSPatrick McHardy 51070c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 51170c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 51270c03b49SPatrick McHardy 5130ac820eeSPhil Oester if (netif_carrier_ok(real_dev)) 514adc667e8SJay Vosburgh netif_carrier_on(dev); 5151da177e4SLinus Torvalds return 0; 51689146504SWang Chen 51789146504SWang Chen clear_allmulti: 51889146504SWang Chen if (dev->flags & IFF_ALLMULTI) 51989146504SWang Chen dev_set_allmulti(real_dev, -1); 52089146504SWang Chen del_unicast: 52189146504SWang Chen if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 522a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 52389146504SWang Chen out: 524adc667e8SJay Vosburgh netif_carrier_off(dev); 52589146504SWang Chen return err; 5261da177e4SLinus Torvalds } 5271da177e4SLinus Torvalds 528ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 5291da177e4SLinus Torvalds { 53070c03b49SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 53170c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 53270c03b49SPatrick McHardy 53370c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 53470c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 5358c979c26SPatrick McHardy 53656addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 537a748ee24SJiri Pirko dev_uc_unsync(real_dev, dev); 5386c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5396c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 5406c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5416c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 5426c78dcbdSPatrick McHardy 5438c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 544a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 5458c979c26SPatrick McHardy 546adc667e8SJay Vosburgh netif_carrier_off(dev); 5471da177e4SLinus Torvalds return 0; 5481da177e4SLinus Torvalds } 5491da177e4SLinus Torvalds 550ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 55139aaac11SPatrick McHardy { 5529dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 55339aaac11SPatrick McHardy struct sockaddr *addr = p; 55439aaac11SPatrick McHardy int err; 55539aaac11SPatrick McHardy 55639aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 55739aaac11SPatrick McHardy return -EADDRNOTAVAIL; 55839aaac11SPatrick McHardy 55939aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 56039aaac11SPatrick McHardy goto out; 56139aaac11SPatrick McHardy 56239aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 563a748ee24SJiri Pirko err = dev_uc_add(real_dev, addr->sa_data); 56439aaac11SPatrick McHardy if (err < 0) 56539aaac11SPatrick McHardy return err; 56639aaac11SPatrick McHardy } 56739aaac11SPatrick McHardy 56839aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 569a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 57039aaac11SPatrick McHardy 57139aaac11SPatrick McHardy out: 57239aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 57339aaac11SPatrick McHardy return 0; 57439aaac11SPatrick McHardy } 57539aaac11SPatrick McHardy 576ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5771da177e4SLinus Torvalds { 5789dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 579656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 5801da177e4SLinus Torvalds struct ifreq ifrr; 5811da177e4SLinus Torvalds int err = -EOPNOTSUPP; 5821da177e4SLinus Torvalds 5831da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 5841da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 5851da177e4SLinus Torvalds 5861da177e4SLinus Torvalds switch (cmd) { 5871da177e4SLinus Torvalds case SIOCGMIIPHY: 5881da177e4SLinus Torvalds case SIOCGMIIREG: 5891da177e4SLinus Torvalds case SIOCSMIIREG: 590656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 591656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 5921da177e4SLinus Torvalds break; 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds if (!err) 5961da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 5971da177e4SLinus Torvalds 5981da177e4SLinus Torvalds return err; 5991da177e4SLinus Torvalds } 6001da177e4SLinus Torvalds 601cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 602cc883d16SFrank Blaschka { 603cc883d16SFrank Blaschka struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 604cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 605cc883d16SFrank Blaschka int err = 0; 606cc883d16SFrank Blaschka 607cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 6089d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 609cc883d16SFrank Blaschka 610cc883d16SFrank Blaschka return err; 611cc883d16SFrank Blaschka } 612cc883d16SFrank Blaschka 613b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 614b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 615b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 616b85daa53SVasu Dev { 617b85daa53SVasu Dev struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 618b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 619b85daa53SVasu Dev int rc = 0; 620b85daa53SVasu Dev 621b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 622b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 623b85daa53SVasu Dev 624b85daa53SVasu Dev return rc; 625b85daa53SVasu Dev } 626b85daa53SVasu Dev 627b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 628b85daa53SVasu Dev { 629b85daa53SVasu Dev struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 630b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 631b85daa53SVasu Dev int len = 0; 632b85daa53SVasu Dev 633b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 634b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 635b85daa53SVasu Dev 636b85daa53SVasu Dev return len; 637b85daa53SVasu Dev } 6380af46d99SYi Zou 6390af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 6400af46d99SYi Zou { 6410af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6420af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6430af46d99SYi Zou int rc = -EINVAL; 6440af46d99SYi Zou 6450af46d99SYi Zou if (ops->ndo_fcoe_enable) 6460af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 6470af46d99SYi Zou return rc; 6480af46d99SYi Zou } 6490af46d99SYi Zou 6500af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 6510af46d99SYi Zou { 6520af46d99SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6530af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 6540af46d99SYi Zou int rc = -EINVAL; 6550af46d99SYi Zou 6560af46d99SYi Zou if (ops->ndo_fcoe_disable) 6570af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 6580af46d99SYi Zou return rc; 6590af46d99SYi Zou } 660d6534799SYi Zou 661d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 662d6534799SYi Zou { 663d6534799SYi Zou struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 664d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 665d6534799SYi Zou int rc = -EINVAL; 666d6534799SYi Zou 667d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 668d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 669d6534799SYi Zou return rc; 670d6534799SYi Zou } 671b85daa53SVasu Dev #endif 672b85daa53SVasu Dev 673ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 6746c78dcbdSPatrick McHardy { 6759dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6766c78dcbdSPatrick McHardy 6776c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 6786c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 6796c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 6806c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 6816c78dcbdSPatrick McHardy } 6826c78dcbdSPatrick McHardy 683e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 6841da177e4SLinus Torvalds { 6859dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 686a748ee24SJiri Pirko dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 6871da177e4SLinus Torvalds } 688ef3eb3e5SPatrick McHardy 689ef3eb3e5SPatrick McHardy /* 690ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 691ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 692ef3eb3e5SPatrick McHardy * separate class since they always nest. 693ef3eb3e5SPatrick McHardy */ 694ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 695cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 696ef3eb3e5SPatrick McHardy 697e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 698e8a0464cSDavid S. Miller struct netdev_queue *txq, 699e8a0464cSDavid S. Miller void *_subclass) 700c773e847SDavid S. Miller { 701c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 702e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 703e8a0464cSDavid S. Miller *(int *)_subclass); 704c773e847SDavid S. Miller } 705c773e847SDavid S. Miller 706c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 707c773e847SDavid S. Miller { 708cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 709cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 710cf508b12SDavid S. Miller subclass); 711e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 712c773e847SDavid S. Miller } 713c773e847SDavid S. Miller 714ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 715ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 716ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 717ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 718ef3eb3e5SPatrick McHardy }; 719ef3eb3e5SPatrick McHardy 720669d3e0bSVasu Dev static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops, 721669d3e0bSVasu Dev vlan_netdev_ops_sq, vlan_netdev_accel_ops_sq; 722f7d1b9f5SEric Dumazet 723ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 724ef3eb3e5SPatrick McHardy { 7259dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 726ef3eb3e5SPatrick McHardy int subclass = 0; 727ef3eb3e5SPatrick McHardy 728adc667e8SJay Vosburgh netif_carrier_off(dev); 729adc667e8SJay Vosburgh 730ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 731194dbcc8SJohn Fastabend dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | 732194dbcc8SJohn Fastabend IFF_MASTER | IFF_SLAVE); 733ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 734ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 735ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 736ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 737ef3eb3e5SPatrick McHardy 738289c79a4SPatrick McHardy dev->features |= real_dev->features & real_dev->vlan_features; 7391ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 7405fb13570SPatrick McHardy 741ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 742ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 743ef3eb3e5SPatrick McHardy 744ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 745ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 746ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 747ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 748ef3eb3e5SPatrick McHardy 749b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 750b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 751b85daa53SVasu Dev #endif 752b85daa53SVasu Dev 753ef3eb3e5SPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_TX) { 754ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 755ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 756669d3e0bSVasu Dev if (real_dev->netdev_ops->ndo_select_queue) 757669d3e0bSVasu Dev dev->netdev_ops = &vlan_netdev_accel_ops_sq; 758669d3e0bSVasu Dev else 759f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_accel_ops; 760ef3eb3e5SPatrick McHardy } else { 761ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 762ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 763669d3e0bSVasu Dev if (real_dev->netdev_ops->ndo_select_queue) 764669d3e0bSVasu Dev dev->netdev_ops = &vlan_netdev_ops_sq; 765669d3e0bSVasu Dev else 766f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 767ef3eb3e5SPatrick McHardy } 768ef3eb3e5SPatrick McHardy 76926a25239SJoonwoo Park if (is_vlan_dev(real_dev)) 770ef3eb3e5SPatrick McHardy subclass = 1; 771ef3eb3e5SPatrick McHardy 772c773e847SDavid S. Miller vlan_dev_set_lockdep_class(dev, subclass); 7739793241fSEric Dumazet 7749793241fSEric Dumazet vlan_dev_info(dev)->vlan_rx_stats = alloc_percpu(struct vlan_rx_stats); 7759793241fSEric Dumazet if (!vlan_dev_info(dev)->vlan_rx_stats) 7769793241fSEric Dumazet return -ENOMEM; 7779793241fSEric Dumazet 778ef3eb3e5SPatrick McHardy return 0; 779ef3eb3e5SPatrick McHardy } 780ef3eb3e5SPatrick McHardy 78123556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 78223556323SPavel Emelyanov { 78323556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 78423556323SPavel Emelyanov struct vlan_dev_info *vlan = vlan_dev_info(dev); 78523556323SPavel Emelyanov int i; 78623556323SPavel Emelyanov 7879793241fSEric Dumazet free_percpu(vlan->vlan_rx_stats); 7889793241fSEric Dumazet vlan->vlan_rx_stats = NULL; 78923556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 79023556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 79123556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 79223556323SPavel Emelyanov kfree(pm); 79323556323SPavel Emelyanov } 79423556323SPavel Emelyanov } 79523556323SPavel Emelyanov } 79623556323SPavel Emelyanov 797b3020061SStephen Hemminger static int vlan_ethtool_get_settings(struct net_device *dev, 798b3020061SStephen Hemminger struct ethtool_cmd *cmd) 799b3020061SStephen Hemminger { 800b3020061SStephen Hemminger const struct vlan_dev_info *vlan = vlan_dev_info(dev); 801b1b67dd4SPatrick McHardy return dev_ethtool_get_settings(vlan->real_dev, cmd); 802b3020061SStephen Hemminger } 803b3020061SStephen Hemminger 804b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 805b3020061SStephen Hemminger struct ethtool_drvinfo *info) 806b3020061SStephen Hemminger { 807b3020061SStephen Hemminger strcpy(info->driver, vlan_fullname); 808b3020061SStephen Hemminger strcpy(info->version, vlan_version); 809b3020061SStephen Hemminger strcpy(info->fw_version, "N/A"); 810b3020061SStephen Hemminger } 811b3020061SStephen Hemminger 81275b8846aSPatrick McHardy static u32 vlan_ethtool_get_rx_csum(struct net_device *dev) 81375b8846aSPatrick McHardy { 81475b8846aSPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 815b1b67dd4SPatrick McHardy return dev_ethtool_get_rx_csum(vlan->real_dev); 81675b8846aSPatrick McHardy } 81775b8846aSPatrick McHardy 81819b9a4e2SPatrick McHardy static u32 vlan_ethtool_get_flags(struct net_device *dev) 81919b9a4e2SPatrick McHardy { 82019b9a4e2SPatrick McHardy const struct vlan_dev_info *vlan = vlan_dev_info(dev); 821b1b67dd4SPatrick McHardy return dev_ethtool_get_flags(vlan->real_dev); 82219b9a4e2SPatrick McHardy } 82319b9a4e2SPatrick McHardy 82428172739SEric Dumazet static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 8259793241fSEric Dumazet { 8263cfde79cSBen Hutchings dev_txq_stats_fold(dev, stats); 8279793241fSEric Dumazet 8289793241fSEric Dumazet if (vlan_dev_info(dev)->vlan_rx_stats) { 8299618e2ffSEric Dumazet struct vlan_rx_stats *p, accum = {0}; 8309793241fSEric Dumazet int i; 8319793241fSEric Dumazet 8329793241fSEric Dumazet for_each_possible_cpu(i) { 8339618e2ffSEric Dumazet u64 rxpackets, rxbytes, rxmulticast; 8349618e2ffSEric Dumazet unsigned int start; 8359618e2ffSEric Dumazet 8369793241fSEric Dumazet p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i); 8379618e2ffSEric Dumazet do { 8389618e2ffSEric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 8399618e2ffSEric Dumazet rxpackets = p->rx_packets; 8409618e2ffSEric Dumazet rxbytes = p->rx_bytes; 8419618e2ffSEric Dumazet rxmulticast = p->rx_multicast; 8429618e2ffSEric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 8439618e2ffSEric Dumazet accum.rx_packets += rxpackets; 8449618e2ffSEric Dumazet accum.rx_bytes += rxbytes; 8459618e2ffSEric Dumazet accum.rx_multicast += rxmulticast; 8469618e2ffSEric Dumazet /* rx_errors is an ulong, not protected by syncp */ 8479618e2ffSEric Dumazet accum.rx_errors += p->rx_errors; 8489793241fSEric Dumazet } 8499618e2ffSEric Dumazet stats->rx_packets = accum.rx_packets; 8509618e2ffSEric Dumazet stats->rx_bytes = accum.rx_bytes; 8519618e2ffSEric Dumazet stats->rx_errors = accum.rx_errors; 8529618e2ffSEric Dumazet stats->multicast = accum.rx_multicast; 8539793241fSEric Dumazet } 8549793241fSEric Dumazet return stats; 8559793241fSEric Dumazet } 8569793241fSEric Dumazet 857a204b48eSEric Dumazet static int vlan_ethtool_set_tso(struct net_device *dev, u32 data) 858a204b48eSEric Dumazet { 859a204b48eSEric Dumazet if (data) { 860a204b48eSEric Dumazet struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 861a204b48eSEric Dumazet 862a204b48eSEric Dumazet /* Underlying device must support TSO for VLAN-tagged packets 863a204b48eSEric Dumazet * and must have TSO enabled now. 864a204b48eSEric Dumazet */ 865a204b48eSEric Dumazet if (!(real_dev->vlan_features & NETIF_F_TSO)) 866a204b48eSEric Dumazet return -EOPNOTSUPP; 867a204b48eSEric Dumazet if (!(real_dev->features & NETIF_F_TSO)) 868a204b48eSEric Dumazet return -EINVAL; 869a204b48eSEric Dumazet dev->features |= NETIF_F_TSO; 870a204b48eSEric Dumazet } else { 871a204b48eSEric Dumazet dev->features &= ~NETIF_F_TSO; 872a204b48eSEric Dumazet } 873a204b48eSEric Dumazet return 0; 874a204b48eSEric Dumazet } 875a204b48eSEric Dumazet 87675b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 877b3020061SStephen Hemminger .get_settings = vlan_ethtool_get_settings, 878b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 87975b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 88075b8846aSPatrick McHardy .get_rx_csum = vlan_ethtool_get_rx_csum, 88119b9a4e2SPatrick McHardy .get_flags = vlan_ethtool_get_flags, 882a204b48eSEric Dumazet .set_tso = vlan_ethtool_set_tso, 88375b8846aSPatrick McHardy }; 88475b8846aSPatrick McHardy 885656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 886656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 887656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 888656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 889656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 890656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 891f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 892f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 893f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 894f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 895f7d1b9f5SEric Dumazet .ndo_set_multicast_list = vlan_dev_set_rx_mode, 896f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 897f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 898cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 8999618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 900b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 901b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 902b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 9030af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 9040af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 905d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 906b85daa53SVasu Dev #endif 907f7d1b9f5SEric Dumazet }; 908f7d1b9f5SEric Dumazet 909f7d1b9f5SEric Dumazet static const struct net_device_ops vlan_netdev_accel_ops = { 910f7d1b9f5SEric Dumazet .ndo_change_mtu = vlan_dev_change_mtu, 911f7d1b9f5SEric Dumazet .ndo_init = vlan_dev_init, 912f7d1b9f5SEric Dumazet .ndo_uninit = vlan_dev_uninit, 913f7d1b9f5SEric Dumazet .ndo_open = vlan_dev_open, 914f7d1b9f5SEric Dumazet .ndo_stop = vlan_dev_stop, 915f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, 916656299f7SStephen Hemminger .ndo_validate_addr = eth_validate_addr, 917656299f7SStephen Hemminger .ndo_set_mac_address = vlan_dev_set_mac_address, 918656299f7SStephen Hemminger .ndo_set_rx_mode = vlan_dev_set_rx_mode, 919656299f7SStephen Hemminger .ndo_set_multicast_list = vlan_dev_set_rx_mode, 920656299f7SStephen Hemminger .ndo_change_rx_flags = vlan_dev_change_rx_flags, 921656299f7SStephen Hemminger .ndo_do_ioctl = vlan_dev_ioctl, 922cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 9239618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 924b85daa53SVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 925b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 926b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 9270af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 9280af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 929d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 930b85daa53SVasu Dev #endif 931656299f7SStephen Hemminger }; 932656299f7SStephen Hemminger 933669d3e0bSVasu Dev static const struct net_device_ops vlan_netdev_ops_sq = { 934669d3e0bSVasu Dev .ndo_select_queue = vlan_dev_select_queue, 935669d3e0bSVasu Dev .ndo_change_mtu = vlan_dev_change_mtu, 936669d3e0bSVasu Dev .ndo_init = vlan_dev_init, 937669d3e0bSVasu Dev .ndo_uninit = vlan_dev_uninit, 938669d3e0bSVasu Dev .ndo_open = vlan_dev_open, 939669d3e0bSVasu Dev .ndo_stop = vlan_dev_stop, 940669d3e0bSVasu Dev .ndo_start_xmit = vlan_dev_hard_start_xmit, 941669d3e0bSVasu Dev .ndo_validate_addr = eth_validate_addr, 942669d3e0bSVasu Dev .ndo_set_mac_address = vlan_dev_set_mac_address, 943669d3e0bSVasu Dev .ndo_set_rx_mode = vlan_dev_set_rx_mode, 944669d3e0bSVasu Dev .ndo_set_multicast_list = vlan_dev_set_rx_mode, 945669d3e0bSVasu Dev .ndo_change_rx_flags = vlan_dev_change_rx_flags, 946669d3e0bSVasu Dev .ndo_do_ioctl = vlan_dev_ioctl, 947669d3e0bSVasu Dev .ndo_neigh_setup = vlan_dev_neigh_setup, 9489618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 949669d3e0bSVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 950669d3e0bSVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 951669d3e0bSVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 952669d3e0bSVasu Dev .ndo_fcoe_enable = vlan_dev_fcoe_enable, 953669d3e0bSVasu Dev .ndo_fcoe_disable = vlan_dev_fcoe_disable, 954669d3e0bSVasu Dev .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 955669d3e0bSVasu Dev #endif 956669d3e0bSVasu Dev }; 957669d3e0bSVasu Dev 958669d3e0bSVasu Dev static const struct net_device_ops vlan_netdev_accel_ops_sq = { 959669d3e0bSVasu Dev .ndo_select_queue = vlan_dev_select_queue, 960669d3e0bSVasu Dev .ndo_change_mtu = vlan_dev_change_mtu, 961669d3e0bSVasu Dev .ndo_init = vlan_dev_init, 962669d3e0bSVasu Dev .ndo_uninit = vlan_dev_uninit, 963669d3e0bSVasu Dev .ndo_open = vlan_dev_open, 964669d3e0bSVasu Dev .ndo_stop = vlan_dev_stop, 965669d3e0bSVasu Dev .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, 966669d3e0bSVasu Dev .ndo_validate_addr = eth_validate_addr, 967669d3e0bSVasu Dev .ndo_set_mac_address = vlan_dev_set_mac_address, 968669d3e0bSVasu Dev .ndo_set_rx_mode = vlan_dev_set_rx_mode, 969669d3e0bSVasu Dev .ndo_set_multicast_list = vlan_dev_set_rx_mode, 970669d3e0bSVasu Dev .ndo_change_rx_flags = vlan_dev_change_rx_flags, 971669d3e0bSVasu Dev .ndo_do_ioctl = vlan_dev_ioctl, 972669d3e0bSVasu Dev .ndo_neigh_setup = vlan_dev_neigh_setup, 9739618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 974669d3e0bSVasu Dev #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 975669d3e0bSVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 976669d3e0bSVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 977669d3e0bSVasu Dev .ndo_fcoe_enable = vlan_dev_fcoe_enable, 978669d3e0bSVasu Dev .ndo_fcoe_disable = vlan_dev_fcoe_disable, 979669d3e0bSVasu Dev .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 980669d3e0bSVasu Dev #endif 981669d3e0bSVasu Dev }; 982669d3e0bSVasu Dev 983ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 984ef3eb3e5SPatrick McHardy { 985ef3eb3e5SPatrick McHardy ether_setup(dev); 986ef3eb3e5SPatrick McHardy 987ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 98893f154b5SEric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 989ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 990ef3eb3e5SPatrick McHardy 991656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 992ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 99375b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 994ef3eb3e5SPatrick McHardy 995ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 996ef3eb3e5SPatrick McHardy } 997