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 23afab2d29SJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 24afab2d29SJoe Perches 251da177e4SLinus Torvalds #include <linux/module.h> 265a0e3ad6STejun Heo #include <linux/slab.h> 271da177e4SLinus Torvalds #include <linux/skbuff.h> 281da177e4SLinus Torvalds #include <linux/netdevice.h> 2937dd9255SRichard Cochran #include <linux/net_tstamp.h> 301da177e4SLinus Torvalds #include <linux/etherdevice.h> 3175b8846aSPatrick McHardy #include <linux/ethtool.h> 32ec1d8ccbSHangbin Liu #include <linux/phy.h> 331da177e4SLinus Torvalds #include <net/arp.h> 349d547833SIdo Schimmel #include <net/switchdev.h> 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds #include "vlan.h" 371da177e4SLinus Torvalds #include "vlanproc.h" 381da177e4SLinus Torvalds #include <linux/if_vlan.h> 396d4cdf47SBenjamin LaHaise #include <linux/netpoll.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds /* 421da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 431da177e4SLinus Torvalds * 441da177e4SLinus Torvalds * saddr=NULL means use device source address 451da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 461da177e4SLinus Torvalds * 471da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 481da177e4SLinus Torvalds * physical devices. 491da177e4SLinus Torvalds */ 50ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 513b04dddeSStephen Hemminger unsigned short type, 52ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 53ef3eb3e5SPatrick McHardy unsigned int len) 541da177e4SLinus Torvalds { 551fd9b1fcSPatrick McHardy struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 561da177e4SLinus Torvalds struct vlan_hdr *vhdr; 571349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 589bb8582eSPatrick McHardy u16 vlan_tci = 0; 591349fe9aSPatrick McHardy int rc; 601da177e4SLinus Torvalds 610c0667a8SWang Sheng-Hui if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) { 62d58ff351SJohannes Berg vhdr = skb_push(skb, VLAN_HLEN); 631da177e4SLinus Torvalds 640c0667a8SWang Sheng-Hui vlan_tci = vlan->vlan_id; 65e267cb96SDavid S. Miller vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); 669bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds /* 69bf9ae538SOctavian Purdila * Set the protocol type. For a packet of type ETH_P_802_3/2 we 70bf9ae538SOctavian Purdila * put the length in here instead. 711da177e4SLinus Torvalds */ 72bf9ae538SOctavian Purdila if (type != ETH_P_802_3 && type != ETH_P_802_2) 731da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 742029cc2cSPatrick McHardy else 751da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 76279e172aSJerome Borsboom 771fd9b1fcSPatrick McHardy skb->protocol = vlan->vlan_proto; 781fd9b1fcSPatrick McHardy type = ntohs(vlan->vlan_proto); 791349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 801da177e4SLinus Torvalds } 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 831da177e4SLinus Torvalds if (saddr == NULL) 841da177e4SLinus Torvalds saddr = dev->dev_addr; 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds /* Now make the underlying real hard header */ 870c0667a8SWang Sheng-Hui dev = vlan->real_dev; 881349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 890c4e8581SStephen Hemminger if (rc > 0) 901349fe9aSPatrick McHardy rc += vhdrlen; 911da177e4SLinus Torvalds return rc; 921da177e4SLinus Torvalds } 931da177e4SLinus Torvalds 946eacf8adSAmerigo Wang static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb) 956eacf8adSAmerigo Wang { 966eacf8adSAmerigo Wang #ifdef CONFIG_NET_POLL_CONTROLLER 976eacf8adSAmerigo Wang if (vlan->netpoll) 986eacf8adSAmerigo Wang netpoll_send_skb(vlan->netpoll, skb); 996eacf8adSAmerigo Wang #else 1006eacf8adSAmerigo Wang BUG(); 1016eacf8adSAmerigo Wang #endif 1026eacf8adSAmerigo Wang return NETDEV_TX_OK; 1036eacf8adSAmerigo Wang } 1046eacf8adSAmerigo Wang 1056fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, 1066fef4c0cSStephen Hemminger struct net_device *dev) 1071da177e4SLinus Torvalds { 1086eacf8adSAmerigo Wang struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 1091da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 1101a123a31SEric Dumazet unsigned int len; 1111a123a31SEric Dumazet int ret; 11255b01e86SDavid S. Miller 1131da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 1141da177e4SLinus Torvalds * 1151da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 1161da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 1171da177e4SLinus Torvalds */ 1181fd9b1fcSPatrick McHardy if (veth->h_vlan_proto != vlan->vlan_proto || 1196eacf8adSAmerigo Wang vlan->flags & VLAN_FLAG_REORDER_HDR) { 1209bb8582eSPatrick McHardy u16 vlan_tci; 1216eacf8adSAmerigo Wang vlan_tci = vlan->vlan_id; 122e267cb96SDavid S. Miller vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); 123b960a0acSJiri Pirko __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci); 124636e19a3SJohn Fastabend } 1251da177e4SLinus Torvalds 1266eacf8adSAmerigo Wang skb->dev = vlan->real_dev; 1271a123a31SEric Dumazet len = skb->len; 1286eacf8adSAmerigo Wang if (unlikely(netpoll_tx_running(dev))) 1296eacf8adSAmerigo Wang return vlan_netpoll_send_skb(vlan, skb); 1306eacf8adSAmerigo Wang 1311a123a31SEric Dumazet ret = dev_queue_xmit(skb); 1321a123a31SEric Dumazet 1332d6c9ffcSEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 1344af429d2SEric Dumazet struct vlan_pcpu_stats *stats; 1354af429d2SEric Dumazet 1366eacf8adSAmerigo Wang stats = this_cpu_ptr(vlan->vlan_pcpu_stats); 1374af429d2SEric Dumazet u64_stats_update_begin(&stats->syncp); 1384af429d2SEric Dumazet stats->tx_packets++; 1394af429d2SEric Dumazet stats->tx_bytes += len; 140307f73dfSWei Yongjun u64_stats_update_end(&stats->syncp); 1414af429d2SEric Dumazet } else { 1426eacf8adSAmerigo Wang this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped); 1434af429d2SEric Dumazet } 1441a123a31SEric Dumazet 145cbbef5e1SPatrick McHardy return ret; 1461da177e4SLinus Torvalds } 1471da177e4SLinus Torvalds 148ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 1491da177e4SLinus Torvalds { 15018d3df3eSPaolo Abeni struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 15118d3df3eSPaolo Abeni unsigned int max_mtu = real_dev->mtu; 15218d3df3eSPaolo Abeni 15318d3df3eSPaolo Abeni if (netif_reduces_vlan_mtu(real_dev)) 15418d3df3eSPaolo Abeni max_mtu -= VLAN_HLEN; 15518d3df3eSPaolo Abeni if (max_mtu < new_mtu) 1561da177e4SLinus Torvalds return -ERANGE; 1571da177e4SLinus Torvalds 1581da177e4SLinus Torvalds dev->mtu = new_mtu; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds return 0; 1611da177e4SLinus Torvalds } 1621da177e4SLinus Torvalds 163c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 1649bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 1651da177e4SLinus Torvalds { 1667da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 167b020cb48SPatrick McHardy 168b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 169b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 170b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 171b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 172b020cb48SPatrick McHardy 173b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 1741da177e4SLinus Torvalds } 1751da177e4SLinus Torvalds 176c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 1779bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 1781da177e4SLinus Torvalds { 1797da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 1801da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 1811da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 18205423b24SEric Dumazet u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 185b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 1861da177e4SLinus Torvalds while (mp) { 1871da177e4SLinus Torvalds if (mp->priority == skb_prio) { 188b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 189b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 190b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 191b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 192b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 1931da177e4SLinus Torvalds return 0; 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds mp = mp->next; 1961da177e4SLinus Torvalds } 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds /* Create a new mapping then. */ 199b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 2001da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 201c17d8874SPatrick McHardy if (!np) 202c17d8874SPatrick McHardy return -ENOBUFS; 203c17d8874SPatrick McHardy 2041da177e4SLinus Torvalds np->next = mp; 2051da177e4SLinus Torvalds np->priority = skb_prio; 206b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 2073e3aac49SEric Dumazet /* Before inserting this element in hash table, make sure all its fields 2083e3aac49SEric Dumazet * are committed to memory. 209e267cb96SDavid S. Miller * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask() 2103e3aac49SEric Dumazet */ 2113e3aac49SEric Dumazet smp_wmb(); 212b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 213b020cb48SPatrick McHardy if (vlan_qos) 214b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 2151da177e4SLinus Torvalds return 0; 2161da177e4SLinus Torvalds } 2171da177e4SLinus Torvalds 21884a2fba2SSun Lianwen /* Flags are defined in the vlan_flags enum in 21984a2fba2SSun Lianwen * include/uapi/linux/if_vlan.h file. 22084a2fba2SSun Lianwen */ 221b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 2221da177e4SLinus Torvalds { 2237da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 224b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 225b3ce0325SPatrick McHardy 2265e756593SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | 22786fbe9bbSDavid Ward VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP)) 2281da177e4SLinus Torvalds return -EINVAL; 229b3ce0325SPatrick McHardy 230b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 23170c03b49SPatrick McHardy 23270c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 23370c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 23470c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 23570c03b49SPatrick McHardy else 23670c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 23770c03b49SPatrick McHardy } 23886fbe9bbSDavid Ward 23986fbe9bbSDavid Ward if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) { 24086fbe9bbSDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 24186fbe9bbSDavid Ward vlan_mvrp_request_join(dev); 24286fbe9bbSDavid Ward else 24386fbe9bbSDavid Ward vlan_mvrp_request_leave(dev); 24486fbe9bbSDavid Ward } 245b3ce0325SPatrick McHardy return 0; 2461da177e4SLinus Torvalds } 2471da177e4SLinus Torvalds 248c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 2491da177e4SLinus Torvalds { 2507da82c06SJiri Pirko strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23); 2511da177e4SLinus Torvalds } 2521da177e4SLinus Torvalds 253308453aaSMike Manning bool vlan_dev_inherit_address(struct net_device *dev, 254308453aaSMike Manning struct net_device *real_dev) 255308453aaSMike Manning { 256308453aaSMike Manning if (dev->addr_assign_type != NET_ADDR_STOLEN) 257308453aaSMike Manning return false; 258308453aaSMike Manning 259308453aaSMike Manning ether_addr_copy(dev->dev_addr, real_dev->dev_addr); 260308453aaSMike Manning call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); 261308453aaSMike Manning return true; 262308453aaSMike Manning } 263308453aaSMike Manning 264ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 2651da177e4SLinus Torvalds { 2667da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 2678c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 2688c979c26SPatrick McHardy int err; 2698c979c26SPatrick McHardy 2705e756593SPatrick McHardy if (!(real_dev->flags & IFF_UP) && 2715e756593SPatrick McHardy !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 2721da177e4SLinus Torvalds return -ENETDOWN; 2731da177e4SLinus Torvalds 274308453aaSMike Manning if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) && 275308453aaSMike Manning !vlan_dev_inherit_address(dev, real_dev)) { 276a748ee24SJiri Pirko err = dev_uc_add(real_dev, dev->dev_addr); 2778c979c26SPatrick McHardy if (err < 0) 27889146504SWang Chen goto out; 2798c979c26SPatrick McHardy } 2808c979c26SPatrick McHardy 28189146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 28289146504SWang Chen err = dev_set_allmulti(real_dev, 1); 28389146504SWang Chen if (err < 0) 28489146504SWang Chen goto del_unicast; 28589146504SWang Chen } 28689146504SWang Chen if (dev->flags & IFF_PROMISC) { 28789146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 28889146504SWang Chen if (err < 0) 28989146504SWang Chen goto clear_allmulti; 29089146504SWang Chen } 29189146504SWang Chen 29207fc67beSJoe Perches ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr); 2936c78dcbdSPatrick McHardy 29470c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 29570c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 29670c03b49SPatrick McHardy 29786fbe9bbSDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 29886fbe9bbSDavid Ward vlan_mvrp_request_join(dev); 29986fbe9bbSDavid Ward 3000ac820eeSPhil Oester if (netif_carrier_ok(real_dev)) 301adc667e8SJay Vosburgh netif_carrier_on(dev); 3021da177e4SLinus Torvalds return 0; 30389146504SWang Chen 30489146504SWang Chen clear_allmulti: 30589146504SWang Chen if (dev->flags & IFF_ALLMULTI) 30689146504SWang Chen dev_set_allmulti(real_dev, -1); 30789146504SWang Chen del_unicast: 30853a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 309a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 31089146504SWang Chen out: 311adc667e8SJay Vosburgh netif_carrier_off(dev); 31289146504SWang Chen return err; 3131da177e4SLinus Torvalds } 3141da177e4SLinus Torvalds 315ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 3161da177e4SLinus Torvalds { 3177da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 31870c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 31970c03b49SPatrick McHardy 32056addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 321a748ee24SJiri Pirko dev_uc_unsync(real_dev, dev); 3226c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 3236c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 3246c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 3256c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 3266c78dcbdSPatrick McHardy 32753a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 328a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 3298c979c26SPatrick McHardy 330adc667e8SJay Vosburgh netif_carrier_off(dev); 3311da177e4SLinus Torvalds return 0; 3321da177e4SLinus Torvalds } 3331da177e4SLinus Torvalds 334ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 33539aaac11SPatrick McHardy { 3367da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 33739aaac11SPatrick McHardy struct sockaddr *addr = p; 33839aaac11SPatrick McHardy int err; 33939aaac11SPatrick McHardy 34039aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 34139aaac11SPatrick McHardy return -EADDRNOTAVAIL; 34239aaac11SPatrick McHardy 34339aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 34439aaac11SPatrick McHardy goto out; 34539aaac11SPatrick McHardy 34653a2b3a1SJoe Perches if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) { 347a748ee24SJiri Pirko err = dev_uc_add(real_dev, addr->sa_data); 34839aaac11SPatrick McHardy if (err < 0) 34939aaac11SPatrick McHardy return err; 35039aaac11SPatrick McHardy } 35139aaac11SPatrick McHardy 35253a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 353a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 35439aaac11SPatrick McHardy 35539aaac11SPatrick McHardy out: 35607fc67beSJoe Perches ether_addr_copy(dev->dev_addr, addr->sa_data); 35739aaac11SPatrick McHardy return 0; 35839aaac11SPatrick McHardy } 35939aaac11SPatrick McHardy 360ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 3611da177e4SLinus Torvalds { 3627da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 363656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 3641da177e4SLinus Torvalds struct ifreq ifrr; 3651da177e4SLinus Torvalds int err = -EOPNOTSUPP; 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 3681da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds switch (cmd) { 3711da177e4SLinus Torvalds case SIOCGMIIPHY: 3721da177e4SLinus Torvalds case SIOCGMIIREG: 3731da177e4SLinus Torvalds case SIOCSMIIREG: 374a6111d3cSStefan Sørensen case SIOCSHWTSTAMP: 375a6111d3cSStefan Sørensen case SIOCGHWTSTAMP: 376656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 377656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 3781da177e4SLinus Torvalds break; 3791da177e4SLinus Torvalds } 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds if (!err) 3821da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds return err; 3851da177e4SLinus Torvalds } 3861da177e4SLinus Torvalds 387cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 388cc883d16SFrank Blaschka { 3897da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 390cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 391cc883d16SFrank Blaschka int err = 0; 392cc883d16SFrank Blaschka 393cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 3949d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 395cc883d16SFrank Blaschka 396cc883d16SFrank Blaschka return err; 397cc883d16SFrank Blaschka } 398cc883d16SFrank Blaschka 399f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 400b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 401b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 402b85daa53SVasu Dev { 4037da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 404b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 405b85daa53SVasu Dev int rc = 0; 406b85daa53SVasu Dev 407b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 408b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 409b85daa53SVasu Dev 410b85daa53SVasu Dev return rc; 411b85daa53SVasu Dev } 412b85daa53SVasu Dev 413b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 414b85daa53SVasu Dev { 4157da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 416b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 417b85daa53SVasu Dev int len = 0; 418b85daa53SVasu Dev 419b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 420b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 421b85daa53SVasu Dev 422b85daa53SVasu Dev return len; 423b85daa53SVasu Dev } 4240af46d99SYi Zou 4250af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 4260af46d99SYi Zou { 4277da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4280af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4290af46d99SYi Zou int rc = -EINVAL; 4300af46d99SYi Zou 4310af46d99SYi Zou if (ops->ndo_fcoe_enable) 4320af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 4330af46d99SYi Zou return rc; 4340af46d99SYi Zou } 4350af46d99SYi Zou 4360af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 4370af46d99SYi Zou { 4387da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4390af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4400af46d99SYi Zou int rc = -EINVAL; 4410af46d99SYi Zou 4420af46d99SYi Zou if (ops->ndo_fcoe_disable) 4430af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 4440af46d99SYi Zou return rc; 4450af46d99SYi Zou } 446d6534799SYi Zou 447d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 448d6534799SYi Zou { 4497da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 450d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 451d6534799SYi Zou int rc = -EINVAL; 452d6534799SYi Zou 453d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 454d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 455d6534799SYi Zou return rc; 456d6534799SYi Zou } 4574ea09c9cSYi Zou 4584ea09c9cSYi Zou static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, 4594ea09c9cSYi Zou struct scatterlist *sgl, unsigned int sgc) 4604ea09c9cSYi Zou { 4617da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4624ea09c9cSYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4634ea09c9cSYi Zou int rc = 0; 4644ea09c9cSYi Zou 4654ea09c9cSYi Zou if (ops->ndo_fcoe_ddp_target) 4664ea09c9cSYi Zou rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); 4674ea09c9cSYi Zou 4684ea09c9cSYi Zou return rc; 4694ea09c9cSYi Zou } 470b85daa53SVasu Dev #endif 471b85daa53SVasu Dev 472ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 4736c78dcbdSPatrick McHardy { 4747da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4756c78dcbdSPatrick McHardy 476deede2faSMatthijs Kooijman if (dev->flags & IFF_UP) { 4776c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 4786c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 4796c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 4806c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 4816c78dcbdSPatrick McHardy } 482deede2faSMatthijs Kooijman } 4836c78dcbdSPatrick McHardy 484e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 4851da177e4SLinus Torvalds { 486d38569abSVlad Yasevich dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 487d38569abSVlad Yasevich dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 4881da177e4SLinus Torvalds } 489ef3eb3e5SPatrick McHardy 490ef3eb3e5SPatrick McHardy /* 491ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 492ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 493ef3eb3e5SPatrick McHardy * separate class since they always nest. 494ef3eb3e5SPatrick McHardy */ 495ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 496cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 497ef3eb3e5SPatrick McHardy 498e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 499e8a0464cSDavid S. Miller struct netdev_queue *txq, 500e8a0464cSDavid S. Miller void *_subclass) 501c773e847SDavid S. Miller { 502c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 503e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 504e8a0464cSDavid S. Miller *(int *)_subclass); 505c773e847SDavid S. Miller } 506c773e847SDavid S. Miller 507c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 508c773e847SDavid S. Miller { 509cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 510cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 511cf508b12SDavid S. Miller subclass); 512e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 513c773e847SDavid S. Miller } 514c773e847SDavid S. Miller 515d38569abSVlad Yasevich static int vlan_dev_get_lock_subclass(struct net_device *dev) 516d38569abSVlad Yasevich { 517d38569abSVlad Yasevich return vlan_dev_priv(dev)->nest_level; 518d38569abSVlad Yasevich } 519d38569abSVlad Yasevich 520ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 521ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 522ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 523ef3eb3e5SPatrick McHardy }; 524ef3eb3e5SPatrick McHardy 5252205369aSDavid S. Miller static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev, 5262205369aSDavid S. Miller unsigned short type, 5272205369aSDavid S. Miller const void *daddr, const void *saddr, 5282205369aSDavid S. Miller unsigned int len) 5292205369aSDavid S. Miller { 5302205369aSDavid S. Miller struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 5312205369aSDavid S. Miller struct net_device *real_dev = vlan->real_dev; 5322205369aSDavid S. Miller 533dd38743bSPeter Boström if (saddr == NULL) 534dd38743bSPeter Boström saddr = dev->dev_addr; 535dd38743bSPeter Boström 5362205369aSDavid S. Miller return dev_hard_header(skb, real_dev, type, daddr, saddr, len); 5372205369aSDavid S. Miller } 5382205369aSDavid S. Miller 5392205369aSDavid S. Miller static const struct header_ops vlan_passthru_header_ops = { 5402205369aSDavid S. Miller .create = vlan_passthru_hard_header, 5412205369aSDavid S. Miller .parse = eth_header_parse, 5422205369aSDavid S. Miller }; 5432205369aSDavid S. Miller 544e949b09bSDoug Goldstein static struct device_type vlan_type = { 545e949b09bSDoug Goldstein .name = "vlan", 546e949b09bSDoug Goldstein }; 547e949b09bSDoug Goldstein 548213b15caSEric Dumazet static const struct net_device_ops vlan_netdev_ops; 549f7d1b9f5SEric Dumazet 550ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 551ef3eb3e5SPatrick McHardy { 5527da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 553ef3eb3e5SPatrick McHardy 554adc667e8SJay Vosburgh netif_carrier_off(dev); 555adc667e8SJay Vosburgh 556ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 557194dbcc8SJohn Fastabend dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | 558194dbcc8SJohn Fastabend IFF_MASTER | IFF_SLAVE); 559ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 560ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 561ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 562ef3eb3e5SPatrick McHardy 563a188222bSTom Herbert dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | 56453f6b708SToshiaki Makita NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | 56553692b1dSTom Herbert NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | 56662f2a3a4SMichał Mirosław NETIF_F_ALL_FCOE; 56762f2a3a4SMichał Mirosław 56888997e42SAndrey Vagin dev->features |= dev->hw_features | NETIF_F_LLTX; 5691ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 570f6773c5eSEric Dumazet dev->gso_max_segs = real_dev->gso_max_segs; 5712adb956bSVlad Yasevich if (dev->features & NETIF_F_VLAN_FEATURES) 5722adb956bSVlad Yasevich netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n"); 5732adb956bSVlad Yasevich 5748d463504SToshiaki Makita dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE; 5755fb13570SPatrick McHardy 576ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 577ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 578ef3eb3e5SPatrick McHardy 579308453aaSMike Manning if (is_zero_ether_addr(dev->dev_addr)) { 580308453aaSMike Manning ether_addr_copy(dev->dev_addr, real_dev->dev_addr); 581308453aaSMike Manning dev->addr_assign_type = NET_ADDR_STOLEN; 582308453aaSMike Manning } 583ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 584ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 585ef3eb3e5SPatrick McHardy 586f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 587b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 588b85daa53SVasu Dev #endif 589b85daa53SVasu Dev 590d870bfb9SEric Dumazet dev->needed_headroom = real_dev->needed_headroom; 591fc0d48b8SVlad Yasevich if (vlan_hw_offload_capable(real_dev->features, 592fc0d48b8SVlad Yasevich vlan_dev_priv(dev)->vlan_proto)) { 5932205369aSDavid S. Miller dev->header_ops = &vlan_passthru_header_ops; 594ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 595ef3eb3e5SPatrick McHardy } else { 596ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 597ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 598636e19a3SJohn Fastabend } 599636e19a3SJohn Fastabend 600f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 601ef3eb3e5SPatrick McHardy 602e949b09bSDoug Goldstein SET_NETDEV_DEVTYPE(dev, &vlan_type); 603e949b09bSDoug Goldstein 604d38569abSVlad Yasevich vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev)); 6059793241fSEric Dumazet 6061c213bd2SWANG Cong vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); 6077da82c06SJiri Pirko if (!vlan_dev_priv(dev)->vlan_pcpu_stats) 6089793241fSEric Dumazet return -ENOMEM; 6099793241fSEric Dumazet 610ef3eb3e5SPatrick McHardy return 0; 611ef3eb3e5SPatrick McHardy } 612ef3eb3e5SPatrick McHardy 61323556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 61423556323SPavel Emelyanov { 61523556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 6167da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 61723556323SPavel Emelyanov int i; 61823556323SPavel Emelyanov 61923556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 62023556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 62123556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 62223556323SPavel Emelyanov kfree(pm); 62323556323SPavel Emelyanov } 62423556323SPavel Emelyanov } 62523556323SPavel Emelyanov } 62623556323SPavel Emelyanov 627c8f44affSMichał Mirosław static netdev_features_t vlan_dev_fix_features(struct net_device *dev, 628c8f44affSMichał Mirosław netdev_features_t features) 6298a0427bbSMichał Mirosław { 6307da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 631b29d3145SBjørn Mork netdev_features_t old_features = features; 6328403debeSVlad Yasevich netdev_features_t lower_features; 6338a0427bbSMichał Mirosław 6348403debeSVlad Yasevich lower_features = netdev_intersect_features((real_dev->vlan_features | 6358403debeSVlad Yasevich NETIF_F_RXCSUM), 6368403debeSVlad Yasevich real_dev->features); 637712ae51aSShan Wei 6388403debeSVlad Yasevich /* Add HW_CSUM setting to preserve user ability to control 6398403debeSVlad Yasevich * checksum offload on the vlan device. 6408403debeSVlad Yasevich */ 6418403debeSVlad Yasevich if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)) 6428403debeSVlad Yasevich lower_features |= NETIF_F_HW_CSUM; 6438403debeSVlad Yasevich features = netdev_intersect_features(features, lower_features); 64453f6b708SToshiaki Makita features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE); 645f0a619ccSMichał Mirosław features |= NETIF_F_LLTX; 6468a0427bbSMichał Mirosław 6478a0427bbSMichał Mirosław return features; 6488a0427bbSMichał Mirosław } 6498a0427bbSMichał Mirosław 65057709798SDavid Decotigny static int vlan_ethtool_get_link_ksettings(struct net_device *dev, 65157709798SDavid Decotigny struct ethtool_link_ksettings *cmd) 652b3020061SStephen Hemminger { 6537da82c06SJiri Pirko const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 6544bc71cb9SJiri Pirko 65557709798SDavid Decotigny return __ethtool_get_link_ksettings(vlan->real_dev, cmd); 656b3020061SStephen Hemminger } 657b3020061SStephen Hemminger 658b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 659b3020061SStephen Hemminger struct ethtool_drvinfo *info) 660b3020061SStephen Hemminger { 6617826d43fSJiri Pirko strlcpy(info->driver, vlan_fullname, sizeof(info->driver)); 6627826d43fSJiri Pirko strlcpy(info->version, vlan_version, sizeof(info->version)); 6637826d43fSJiri Pirko strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); 664b3020061SStephen Hemminger } 665b3020061SStephen Hemminger 66637dd9255SRichard Cochran static int vlan_ethtool_get_ts_info(struct net_device *dev, 66737dd9255SRichard Cochran struct ethtool_ts_info *info) 66837dd9255SRichard Cochran { 66937dd9255SRichard Cochran const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 67037dd9255SRichard Cochran const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops; 671ec1d8ccbSHangbin Liu struct phy_device *phydev = vlan->real_dev->phydev; 67237dd9255SRichard Cochran 673ec1d8ccbSHangbin Liu if (phydev && phydev->drv && phydev->drv->ts_info) { 674ec1d8ccbSHangbin Liu return phydev->drv->ts_info(phydev, info); 675ec1d8ccbSHangbin Liu } else if (ops->get_ts_info) { 67637dd9255SRichard Cochran return ops->get_ts_info(vlan->real_dev, info); 67737dd9255SRichard Cochran } else { 67837dd9255SRichard Cochran info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | 67937dd9255SRichard Cochran SOF_TIMESTAMPING_SOFTWARE; 68037dd9255SRichard Cochran info->phc_index = -1; 68137dd9255SRichard Cochran } 68237dd9255SRichard Cochran 68337dd9255SRichard Cochran return 0; 68437dd9255SRichard Cochran } 68537dd9255SRichard Cochran 686bc1f4470Sstephen hemminger static void vlan_dev_get_stats64(struct net_device *dev, 687bc1f4470Sstephen hemminger struct rtnl_link_stats64 *stats) 6889793241fSEric Dumazet { 6894af429d2SEric Dumazet struct vlan_pcpu_stats *p; 6904af429d2SEric Dumazet u32 rx_errors = 0, tx_dropped = 0; 6919793241fSEric Dumazet int i; 6929793241fSEric Dumazet 6939793241fSEric Dumazet for_each_possible_cpu(i) { 6944af429d2SEric Dumazet u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; 6959618e2ffSEric Dumazet unsigned int start; 6969618e2ffSEric Dumazet 6977da82c06SJiri Pirko p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i); 6989618e2ffSEric Dumazet do { 69957a7744eSEric W. Biederman start = u64_stats_fetch_begin_irq(&p->syncp); 7009618e2ffSEric Dumazet rxpackets = p->rx_packets; 7019618e2ffSEric Dumazet rxbytes = p->rx_bytes; 7029618e2ffSEric Dumazet rxmulticast = p->rx_multicast; 7034af429d2SEric Dumazet txpackets = p->tx_packets; 7044af429d2SEric Dumazet txbytes = p->tx_bytes; 70557a7744eSEric W. Biederman } while (u64_stats_fetch_retry_irq(&p->syncp, start)); 7064af429d2SEric Dumazet 7074af429d2SEric Dumazet stats->rx_packets += rxpackets; 7084af429d2SEric Dumazet stats->rx_bytes += rxbytes; 7094af429d2SEric Dumazet stats->multicast += rxmulticast; 7104af429d2SEric Dumazet stats->tx_packets += txpackets; 7114af429d2SEric Dumazet stats->tx_bytes += txbytes; 7124af429d2SEric Dumazet /* rx_errors & tx_dropped are u32 */ 7134af429d2SEric Dumazet rx_errors += p->rx_errors; 7144af429d2SEric Dumazet tx_dropped += p->tx_dropped; 7159793241fSEric Dumazet } 7164af429d2SEric Dumazet stats->rx_errors = rx_errors; 7174af429d2SEric Dumazet stats->tx_dropped = tx_dropped; 7189793241fSEric Dumazet } 7199793241fSEric Dumazet 7206d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 721de93cb2eSEric Dumazet static void vlan_dev_poll_controller(struct net_device *dev) 7226d4cdf47SBenjamin LaHaise { 7236d4cdf47SBenjamin LaHaise return; 7246d4cdf47SBenjamin LaHaise } 7256d4cdf47SBenjamin LaHaise 726a8779ec1SEric W. Biederman static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) 7276d4cdf47SBenjamin LaHaise { 728f3da3893SAmerigo Wang struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 729f3da3893SAmerigo Wang struct net_device *real_dev = vlan->real_dev; 7306d4cdf47SBenjamin LaHaise struct netpoll *netpoll; 7316d4cdf47SBenjamin LaHaise int err = 0; 7326d4cdf47SBenjamin LaHaise 733a8779ec1SEric W. Biederman netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); 7346d4cdf47SBenjamin LaHaise err = -ENOMEM; 7356d4cdf47SBenjamin LaHaise if (!netpoll) 7366d4cdf47SBenjamin LaHaise goto out; 7376d4cdf47SBenjamin LaHaise 738a8779ec1SEric W. Biederman err = __netpoll_setup(netpoll, real_dev); 7396d4cdf47SBenjamin LaHaise if (err) { 7406d4cdf47SBenjamin LaHaise kfree(netpoll); 7416d4cdf47SBenjamin LaHaise goto out; 7426d4cdf47SBenjamin LaHaise } 7436d4cdf47SBenjamin LaHaise 744f3da3893SAmerigo Wang vlan->netpoll = netpoll; 7456d4cdf47SBenjamin LaHaise 7466d4cdf47SBenjamin LaHaise out: 7476d4cdf47SBenjamin LaHaise return err; 7486d4cdf47SBenjamin LaHaise } 7496d4cdf47SBenjamin LaHaise 750de93cb2eSEric Dumazet static void vlan_dev_netpoll_cleanup(struct net_device *dev) 7516d4cdf47SBenjamin LaHaise { 752f3da3893SAmerigo Wang struct vlan_dev_priv *vlan= vlan_dev_priv(dev); 753f3da3893SAmerigo Wang struct netpoll *netpoll = vlan->netpoll; 7546d4cdf47SBenjamin LaHaise 7556d4cdf47SBenjamin LaHaise if (!netpoll) 7566d4cdf47SBenjamin LaHaise return; 7576d4cdf47SBenjamin LaHaise 758f3da3893SAmerigo Wang vlan->netpoll = NULL; 759c9fbd71fSDebabrata Banerjee __netpoll_free(netpoll); 7606d4cdf47SBenjamin LaHaise } 7616d4cdf47SBenjamin LaHaise #endif /* CONFIG_NET_POLL_CONTROLLER */ 7626d4cdf47SBenjamin LaHaise 7632dbf6b50SNicolas Dichtel static int vlan_dev_get_iflink(const struct net_device *dev) 7642dbf6b50SNicolas Dichtel { 7652dbf6b50SNicolas Dichtel struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 7662dbf6b50SNicolas Dichtel 7672dbf6b50SNicolas Dichtel return real_dev->ifindex; 7682dbf6b50SNicolas Dichtel } 7692dbf6b50SNicolas Dichtel 77075b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 77157709798SDavid Decotigny .get_link_ksettings = vlan_ethtool_get_link_ksettings, 772b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 77375b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 77437dd9255SRichard Cochran .get_ts_info = vlan_ethtool_get_ts_info, 77575b8846aSPatrick McHardy }; 77675b8846aSPatrick McHardy 777656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 778656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 779656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 780656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 781656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 782656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 783f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 784f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 785f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 786f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 787f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 788f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 789cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 7909618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 791f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 792b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 793b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 7940af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 7950af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 796d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 7974ea09c9cSYi Zou .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, 798b85daa53SVasu Dev #endif 7996d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 8006d4cdf47SBenjamin LaHaise .ndo_poll_controller = vlan_dev_poll_controller, 8016d4cdf47SBenjamin LaHaise .ndo_netpoll_setup = vlan_dev_netpoll_setup, 8026d4cdf47SBenjamin LaHaise .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup, 8036d4cdf47SBenjamin LaHaise #endif 8048a0427bbSMichał Mirosław .ndo_fix_features = vlan_dev_fix_features, 805d38569abSVlad Yasevich .ndo_get_lock_subclass = vlan_dev_get_lock_subclass, 8062dbf6b50SNicolas Dichtel .ndo_get_iflink = vlan_dev_get_iflink, 807f7d1b9f5SEric Dumazet }; 808f7d1b9f5SEric Dumazet 809a48e5fafSEric Dumazet static void vlan_dev_free(struct net_device *dev) 810a48e5fafSEric Dumazet { 811a48e5fafSEric Dumazet struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 812a48e5fafSEric Dumazet 813a48e5fafSEric Dumazet free_percpu(vlan->vlan_pcpu_stats); 814a48e5fafSEric Dumazet vlan->vlan_pcpu_stats = NULL; 815a48e5fafSEric Dumazet } 816a48e5fafSEric Dumazet 817ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 818ef3eb3e5SPatrick McHardy { 819ef3eb3e5SPatrick McHardy ether_setup(dev); 820ef3eb3e5SPatrick McHardy 8212e659c05SPhil Sutter dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE; 822e817af27SZhang Shengju dev->priv_flags |= IFF_UNICAST_FLT; 82302875878SEric Dumazet dev->priv_flags &= ~IFF_TX_SKB_SHARING; 82402875878SEric Dumazet netif_keep_dst(dev); 825ef3eb3e5SPatrick McHardy 826656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 827cf124db5SDavid S. Miller dev->needs_free_netdev = true; 828cf124db5SDavid S. Miller dev->priv_destructor = vlan_dev_free; 82975b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 830ef3eb3e5SPatrick McHardy 83191572088SJarod Wilson dev->min_mtu = 0; 83291572088SJarod Wilson dev->max_mtu = ETH_MAX_MTU; 83391572088SJarod Wilson 834423049abSJoe Perches eth_zero_addr(dev->broadcast); 835ef3eb3e5SPatrick McHardy } 836