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> 321da177e4SLinus Torvalds #include <net/arp.h> 339d547833SIdo Schimmel #include <net/switchdev.h> 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds #include "vlan.h" 361da177e4SLinus Torvalds #include "vlanproc.h" 371da177e4SLinus Torvalds #include <linux/if_vlan.h> 386d4cdf47SBenjamin LaHaise #include <linux/netpoll.h> 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds /* 411da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 421da177e4SLinus Torvalds * 431da177e4SLinus Torvalds * saddr=NULL means use device source address 441da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 451da177e4SLinus Torvalds * 461da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 471da177e4SLinus Torvalds * physical devices. 481da177e4SLinus Torvalds */ 49ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 503b04dddeSStephen Hemminger unsigned short type, 51ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 52ef3eb3e5SPatrick McHardy unsigned int len) 531da177e4SLinus Torvalds { 541fd9b1fcSPatrick McHardy struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 551da177e4SLinus Torvalds struct vlan_hdr *vhdr; 561349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 579bb8582eSPatrick McHardy u16 vlan_tci = 0; 581349fe9aSPatrick McHardy int rc; 591da177e4SLinus Torvalds 600c0667a8SWang Sheng-Hui if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) { 611da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 621da177e4SLinus Torvalds 630c0667a8SWang Sheng-Hui vlan_tci = vlan->vlan_id; 64e267cb96SDavid S. Miller vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); 659bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds /* 68bf9ae538SOctavian Purdila * Set the protocol type. For a packet of type ETH_P_802_3/2 we 69bf9ae538SOctavian Purdila * put the length in here instead. 701da177e4SLinus Torvalds */ 71bf9ae538SOctavian Purdila if (type != ETH_P_802_3 && type != ETH_P_802_2) 721da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 732029cc2cSPatrick McHardy else 741da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 75279e172aSJerome Borsboom 761fd9b1fcSPatrick McHardy skb->protocol = vlan->vlan_proto; 771fd9b1fcSPatrick McHardy type = ntohs(vlan->vlan_proto); 781349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 791da177e4SLinus Torvalds } 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 821da177e4SLinus Torvalds if (saddr == NULL) 831da177e4SLinus Torvalds saddr = dev->dev_addr; 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds /* Now make the underlying real hard header */ 860c0667a8SWang Sheng-Hui dev = vlan->real_dev; 871349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 880c4e8581SStephen Hemminger if (rc > 0) 891349fe9aSPatrick McHardy rc += vhdrlen; 901da177e4SLinus Torvalds return rc; 911da177e4SLinus Torvalds } 921da177e4SLinus Torvalds 936eacf8adSAmerigo Wang static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb) 946eacf8adSAmerigo Wang { 956eacf8adSAmerigo Wang #ifdef CONFIG_NET_POLL_CONTROLLER 966eacf8adSAmerigo Wang if (vlan->netpoll) 976eacf8adSAmerigo Wang netpoll_send_skb(vlan->netpoll, skb); 986eacf8adSAmerigo Wang #else 996eacf8adSAmerigo Wang BUG(); 1006eacf8adSAmerigo Wang #endif 1016eacf8adSAmerigo Wang return NETDEV_TX_OK; 1026eacf8adSAmerigo Wang } 1036eacf8adSAmerigo Wang 1046fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, 1056fef4c0cSStephen Hemminger struct net_device *dev) 1061da177e4SLinus Torvalds { 1076eacf8adSAmerigo Wang struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 1081da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 1091a123a31SEric Dumazet unsigned int len; 1101a123a31SEric Dumazet int ret; 11155b01e86SDavid S. Miller 1121da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 1131da177e4SLinus Torvalds * 1141da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 1151da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 1161da177e4SLinus Torvalds */ 1171fd9b1fcSPatrick McHardy if (veth->h_vlan_proto != vlan->vlan_proto || 1186eacf8adSAmerigo Wang vlan->flags & VLAN_FLAG_REORDER_HDR) { 1199bb8582eSPatrick McHardy u16 vlan_tci; 1206eacf8adSAmerigo Wang vlan_tci = vlan->vlan_id; 121e267cb96SDavid S. Miller vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority); 122b960a0acSJiri Pirko __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci); 123636e19a3SJohn Fastabend } 1241da177e4SLinus Torvalds 1256eacf8adSAmerigo Wang skb->dev = vlan->real_dev; 1261a123a31SEric Dumazet len = skb->len; 1276eacf8adSAmerigo Wang if (unlikely(netpoll_tx_running(dev))) 1286eacf8adSAmerigo Wang return vlan_netpoll_send_skb(vlan, skb); 1296eacf8adSAmerigo Wang 1301a123a31SEric Dumazet ret = dev_queue_xmit(skb); 1311a123a31SEric Dumazet 1322d6c9ffcSEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 1334af429d2SEric Dumazet struct vlan_pcpu_stats *stats; 1344af429d2SEric Dumazet 1356eacf8adSAmerigo Wang stats = this_cpu_ptr(vlan->vlan_pcpu_stats); 1364af429d2SEric Dumazet u64_stats_update_begin(&stats->syncp); 1374af429d2SEric Dumazet stats->tx_packets++; 1384af429d2SEric Dumazet stats->tx_bytes += len; 139307f73dfSWei Yongjun u64_stats_update_end(&stats->syncp); 1404af429d2SEric Dumazet } else { 1416eacf8adSAmerigo Wang this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped); 1424af429d2SEric Dumazet } 1431a123a31SEric Dumazet 144cbbef5e1SPatrick McHardy return ret; 1451da177e4SLinus Torvalds } 1461da177e4SLinus Torvalds 147ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 1481da177e4SLinus Torvalds { 1491da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 1501da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 1511da177e4SLinus Torvalds */ 1527da82c06SJiri Pirko if (vlan_dev_priv(dev)->real_dev->mtu < new_mtu) 1531da177e4SLinus Torvalds return -ERANGE; 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds dev->mtu = new_mtu; 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds return 0; 1581da177e4SLinus Torvalds } 1591da177e4SLinus Torvalds 160c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 1619bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 1621da177e4SLinus Torvalds { 1637da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 164b020cb48SPatrick McHardy 165b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 166b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 167b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 168b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 169b020cb48SPatrick McHardy 170b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 1711da177e4SLinus Torvalds } 1721da177e4SLinus Torvalds 173c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 1749bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 1751da177e4SLinus Torvalds { 1767da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 1771da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 1781da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 17905423b24SEric Dumazet u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 182b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 1831da177e4SLinus Torvalds while (mp) { 1841da177e4SLinus Torvalds if (mp->priority == skb_prio) { 185b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 186b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 187b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 188b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 189b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 1901da177e4SLinus Torvalds return 0; 1911da177e4SLinus Torvalds } 1921da177e4SLinus Torvalds mp = mp->next; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds /* Create a new mapping then. */ 196b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 1971da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 198c17d8874SPatrick McHardy if (!np) 199c17d8874SPatrick McHardy return -ENOBUFS; 200c17d8874SPatrick McHardy 2011da177e4SLinus Torvalds np->next = mp; 2021da177e4SLinus Torvalds np->priority = skb_prio; 203b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 2043e3aac49SEric Dumazet /* Before inserting this element in hash table, make sure all its fields 2053e3aac49SEric Dumazet * are committed to memory. 206e267cb96SDavid S. Miller * coupled with smp_rmb() in vlan_dev_get_egress_qos_mask() 2073e3aac49SEric Dumazet */ 2083e3aac49SEric Dumazet smp_wmb(); 209b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 210b020cb48SPatrick McHardy if (vlan_qos) 211b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 2121da177e4SLinus Torvalds return 0; 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds 215a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 216b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 2171da177e4SLinus Torvalds { 2187da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 219b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 220b3ce0325SPatrick McHardy 2215e756593SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | 22286fbe9bbSDavid Ward VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP)) 2231da177e4SLinus Torvalds return -EINVAL; 224b3ce0325SPatrick McHardy 225b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 22670c03b49SPatrick McHardy 22770c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 22870c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 22970c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 23070c03b49SPatrick McHardy else 23170c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 23270c03b49SPatrick McHardy } 23386fbe9bbSDavid Ward 23486fbe9bbSDavid Ward if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) { 23586fbe9bbSDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 23686fbe9bbSDavid Ward vlan_mvrp_request_join(dev); 23786fbe9bbSDavid Ward else 23886fbe9bbSDavid Ward vlan_mvrp_request_leave(dev); 23986fbe9bbSDavid Ward } 240b3ce0325SPatrick McHardy return 0; 2411da177e4SLinus Torvalds } 2421da177e4SLinus Torvalds 243c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 2441da177e4SLinus Torvalds { 2457da82c06SJiri Pirko strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23); 2461da177e4SLinus Torvalds } 2471da177e4SLinus Torvalds 248ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 2491da177e4SLinus Torvalds { 2507da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 2518c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 2528c979c26SPatrick McHardy int err; 2538c979c26SPatrick McHardy 2545e756593SPatrick McHardy if (!(real_dev->flags & IFF_UP) && 2555e756593SPatrick McHardy !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 2561da177e4SLinus Torvalds return -ENETDOWN; 2571da177e4SLinus Torvalds 25853a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) { 259a748ee24SJiri Pirko err = dev_uc_add(real_dev, dev->dev_addr); 2608c979c26SPatrick McHardy if (err < 0) 26189146504SWang Chen goto out; 2628c979c26SPatrick McHardy } 2638c979c26SPatrick McHardy 26489146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 26589146504SWang Chen err = dev_set_allmulti(real_dev, 1); 26689146504SWang Chen if (err < 0) 26789146504SWang Chen goto del_unicast; 26889146504SWang Chen } 26989146504SWang Chen if (dev->flags & IFF_PROMISC) { 27089146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 27189146504SWang Chen if (err < 0) 27289146504SWang Chen goto clear_allmulti; 27389146504SWang Chen } 27489146504SWang Chen 27507fc67beSJoe Perches ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr); 2766c78dcbdSPatrick McHardy 27770c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 27870c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 27970c03b49SPatrick McHardy 28086fbe9bbSDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 28186fbe9bbSDavid Ward vlan_mvrp_request_join(dev); 28286fbe9bbSDavid Ward 2830ac820eeSPhil Oester if (netif_carrier_ok(real_dev)) 284adc667e8SJay Vosburgh netif_carrier_on(dev); 2851da177e4SLinus Torvalds return 0; 28689146504SWang Chen 28789146504SWang Chen clear_allmulti: 28889146504SWang Chen if (dev->flags & IFF_ALLMULTI) 28989146504SWang Chen dev_set_allmulti(real_dev, -1); 29089146504SWang Chen del_unicast: 29153a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 292a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 29389146504SWang Chen out: 294adc667e8SJay Vosburgh netif_carrier_off(dev); 29589146504SWang Chen return err; 2961da177e4SLinus Torvalds } 2971da177e4SLinus Torvalds 298ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 2991da177e4SLinus Torvalds { 3007da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 30170c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 30270c03b49SPatrick McHardy 30356addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 304a748ee24SJiri Pirko dev_uc_unsync(real_dev, dev); 3056c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 3066c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 3076c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 3086c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 3096c78dcbdSPatrick McHardy 31053a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 311a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 3128c979c26SPatrick McHardy 313adc667e8SJay Vosburgh netif_carrier_off(dev); 3141da177e4SLinus Torvalds return 0; 3151da177e4SLinus Torvalds } 3161da177e4SLinus Torvalds 317ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 31839aaac11SPatrick McHardy { 3197da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 32039aaac11SPatrick McHardy struct sockaddr *addr = p; 32139aaac11SPatrick McHardy int err; 32239aaac11SPatrick McHardy 32339aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 32439aaac11SPatrick McHardy return -EADDRNOTAVAIL; 32539aaac11SPatrick McHardy 32639aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 32739aaac11SPatrick McHardy goto out; 32839aaac11SPatrick McHardy 32953a2b3a1SJoe Perches if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) { 330a748ee24SJiri Pirko err = dev_uc_add(real_dev, addr->sa_data); 33139aaac11SPatrick McHardy if (err < 0) 33239aaac11SPatrick McHardy return err; 33339aaac11SPatrick McHardy } 33439aaac11SPatrick McHardy 33553a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 336a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 33739aaac11SPatrick McHardy 33839aaac11SPatrick McHardy out: 33907fc67beSJoe Perches ether_addr_copy(dev->dev_addr, addr->sa_data); 34039aaac11SPatrick McHardy return 0; 34139aaac11SPatrick McHardy } 34239aaac11SPatrick McHardy 343ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 3441da177e4SLinus Torvalds { 3457da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 346656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 3471da177e4SLinus Torvalds struct ifreq ifrr; 3481da177e4SLinus Torvalds int err = -EOPNOTSUPP; 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 3511da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds switch (cmd) { 3541da177e4SLinus Torvalds case SIOCGMIIPHY: 3551da177e4SLinus Torvalds case SIOCGMIIREG: 3561da177e4SLinus Torvalds case SIOCSMIIREG: 357a6111d3cSStefan Sørensen case SIOCSHWTSTAMP: 358a6111d3cSStefan Sørensen case SIOCGHWTSTAMP: 359656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 360656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 3611da177e4SLinus Torvalds break; 3621da177e4SLinus Torvalds } 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds if (!err) 3651da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds return err; 3681da177e4SLinus Torvalds } 3691da177e4SLinus Torvalds 370cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 371cc883d16SFrank Blaschka { 3727da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 373cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 374cc883d16SFrank Blaschka int err = 0; 375cc883d16SFrank Blaschka 376cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 3779d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 378cc883d16SFrank Blaschka 379cc883d16SFrank Blaschka return err; 380cc883d16SFrank Blaschka } 381cc883d16SFrank Blaschka 382f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 383b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 384b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 385b85daa53SVasu Dev { 3867da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 387b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 388b85daa53SVasu Dev int rc = 0; 389b85daa53SVasu Dev 390b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 391b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 392b85daa53SVasu Dev 393b85daa53SVasu Dev return rc; 394b85daa53SVasu Dev } 395b85daa53SVasu Dev 396b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 397b85daa53SVasu Dev { 3987da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 399b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 400b85daa53SVasu Dev int len = 0; 401b85daa53SVasu Dev 402b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 403b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 404b85daa53SVasu Dev 405b85daa53SVasu Dev return len; 406b85daa53SVasu Dev } 4070af46d99SYi Zou 4080af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 4090af46d99SYi Zou { 4107da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4110af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4120af46d99SYi Zou int rc = -EINVAL; 4130af46d99SYi Zou 4140af46d99SYi Zou if (ops->ndo_fcoe_enable) 4150af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 4160af46d99SYi Zou return rc; 4170af46d99SYi Zou } 4180af46d99SYi Zou 4190af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 4200af46d99SYi Zou { 4217da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4220af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4230af46d99SYi Zou int rc = -EINVAL; 4240af46d99SYi Zou 4250af46d99SYi Zou if (ops->ndo_fcoe_disable) 4260af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 4270af46d99SYi Zou return rc; 4280af46d99SYi Zou } 429d6534799SYi Zou 430d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 431d6534799SYi Zou { 4327da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 433d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 434d6534799SYi Zou int rc = -EINVAL; 435d6534799SYi Zou 436d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 437d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 438d6534799SYi Zou return rc; 439d6534799SYi Zou } 4404ea09c9cSYi Zou 4414ea09c9cSYi Zou static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, 4424ea09c9cSYi Zou struct scatterlist *sgl, unsigned int sgc) 4434ea09c9cSYi Zou { 4447da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4454ea09c9cSYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4464ea09c9cSYi Zou int rc = 0; 4474ea09c9cSYi Zou 4484ea09c9cSYi Zou if (ops->ndo_fcoe_ddp_target) 4494ea09c9cSYi Zou rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); 4504ea09c9cSYi Zou 4514ea09c9cSYi Zou return rc; 4524ea09c9cSYi Zou } 453b85daa53SVasu Dev #endif 454b85daa53SVasu Dev 455ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 4566c78dcbdSPatrick McHardy { 4577da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4586c78dcbdSPatrick McHardy 459deede2faSMatthijs Kooijman if (dev->flags & IFF_UP) { 4606c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 4616c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 4626c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 4636c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 4646c78dcbdSPatrick McHardy } 465deede2faSMatthijs Kooijman } 4666c78dcbdSPatrick McHardy 467e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 4681da177e4SLinus Torvalds { 469d38569abSVlad Yasevich dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 470d38569abSVlad Yasevich dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 4711da177e4SLinus Torvalds } 472ef3eb3e5SPatrick McHardy 473ef3eb3e5SPatrick McHardy /* 474ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 475ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 476ef3eb3e5SPatrick McHardy * separate class since they always nest. 477ef3eb3e5SPatrick McHardy */ 478ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 479cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 480ef3eb3e5SPatrick McHardy 481e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 482e8a0464cSDavid S. Miller struct netdev_queue *txq, 483e8a0464cSDavid S. Miller void *_subclass) 484c773e847SDavid S. Miller { 485c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 486e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 487e8a0464cSDavid S. Miller *(int *)_subclass); 488c773e847SDavid S. Miller } 489c773e847SDavid S. Miller 490c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 491c773e847SDavid S. Miller { 492cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 493cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 494cf508b12SDavid S. Miller subclass); 495e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 496c773e847SDavid S. Miller } 497c773e847SDavid S. Miller 498d38569abSVlad Yasevich static int vlan_dev_get_lock_subclass(struct net_device *dev) 499d38569abSVlad Yasevich { 500d38569abSVlad Yasevich return vlan_dev_priv(dev)->nest_level; 501d38569abSVlad Yasevich } 502d38569abSVlad Yasevich 503ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 504ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 505ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 506ef3eb3e5SPatrick McHardy }; 507ef3eb3e5SPatrick McHardy 5082205369aSDavid S. Miller static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev, 5092205369aSDavid S. Miller unsigned short type, 5102205369aSDavid S. Miller const void *daddr, const void *saddr, 5112205369aSDavid S. Miller unsigned int len) 5122205369aSDavid S. Miller { 5132205369aSDavid S. Miller struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 5142205369aSDavid S. Miller struct net_device *real_dev = vlan->real_dev; 5152205369aSDavid S. Miller 516dd38743bSPeter Boström if (saddr == NULL) 517dd38743bSPeter Boström saddr = dev->dev_addr; 518dd38743bSPeter Boström 5192205369aSDavid S. Miller return dev_hard_header(skb, real_dev, type, daddr, saddr, len); 5202205369aSDavid S. Miller } 5212205369aSDavid S. Miller 5222205369aSDavid S. Miller static const struct header_ops vlan_passthru_header_ops = { 5232205369aSDavid S. Miller .create = vlan_passthru_hard_header, 5242205369aSDavid S. Miller .parse = eth_header_parse, 5252205369aSDavid S. Miller }; 5262205369aSDavid S. Miller 527e949b09bSDoug Goldstein static struct device_type vlan_type = { 528e949b09bSDoug Goldstein .name = "vlan", 529e949b09bSDoug Goldstein }; 530e949b09bSDoug Goldstein 531213b15caSEric Dumazet static const struct net_device_ops vlan_netdev_ops; 532f7d1b9f5SEric Dumazet 533ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 534ef3eb3e5SPatrick McHardy { 5357da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 536ef3eb3e5SPatrick McHardy 537adc667e8SJay Vosburgh netif_carrier_off(dev); 538adc667e8SJay Vosburgh 539ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 540194dbcc8SJohn Fastabend dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | 541194dbcc8SJohn Fastabend IFF_MASTER | IFF_SLAVE); 542ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 543ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 544ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 545ef3eb3e5SPatrick McHardy 546a188222bSTom Herbert dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | 54753f6b708SToshiaki Makita NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | 54853692b1dSTom Herbert NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | 54962f2a3a4SMichał Mirosław NETIF_F_ALL_FCOE; 55062f2a3a4SMichał Mirosław 55153f6b708SToshiaki Makita dev->features |= real_dev->vlan_features | NETIF_F_LLTX | 55253f6b708SToshiaki Makita NETIF_F_GSO_SOFTWARE; 5531ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 554f6773c5eSEric Dumazet dev->gso_max_segs = real_dev->gso_max_segs; 5552adb956bSVlad Yasevich if (dev->features & NETIF_F_VLAN_FEATURES) 5562adb956bSVlad Yasevich netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n"); 5572adb956bSVlad Yasevich 5588d463504SToshiaki Makita dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE; 5595fb13570SPatrick McHardy 560ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 561ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 562ef3eb3e5SPatrick McHardy 563ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 5646b93f4a1SBjørn Mork eth_hw_addr_inherit(dev, real_dev); 565ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 566ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 567ef3eb3e5SPatrick McHardy 568f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 569b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 570b85daa53SVasu Dev #endif 571b85daa53SVasu Dev 572d870bfb9SEric Dumazet dev->needed_headroom = real_dev->needed_headroom; 573fc0d48b8SVlad Yasevich if (vlan_hw_offload_capable(real_dev->features, 574fc0d48b8SVlad Yasevich vlan_dev_priv(dev)->vlan_proto)) { 5752205369aSDavid S. Miller dev->header_ops = &vlan_passthru_header_ops; 576ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 577ef3eb3e5SPatrick McHardy } else { 578ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 579ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 580636e19a3SJohn Fastabend } 581636e19a3SJohn Fastabend 582f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 583ef3eb3e5SPatrick McHardy 584e949b09bSDoug Goldstein SET_NETDEV_DEVTYPE(dev, &vlan_type); 585e949b09bSDoug Goldstein 586d38569abSVlad Yasevich vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev)); 5879793241fSEric Dumazet 5881c213bd2SWANG Cong vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); 5897da82c06SJiri Pirko if (!vlan_dev_priv(dev)->vlan_pcpu_stats) 5909793241fSEric Dumazet return -ENOMEM; 5919793241fSEric Dumazet 592ef3eb3e5SPatrick McHardy return 0; 593ef3eb3e5SPatrick McHardy } 594ef3eb3e5SPatrick McHardy 59523556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 59623556323SPavel Emelyanov { 59723556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 5987da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 59923556323SPavel Emelyanov int i; 60023556323SPavel Emelyanov 60123556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 60223556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 60323556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 60423556323SPavel Emelyanov kfree(pm); 60523556323SPavel Emelyanov } 60623556323SPavel Emelyanov } 60723556323SPavel Emelyanov } 60823556323SPavel Emelyanov 609c8f44affSMichał Mirosław static netdev_features_t vlan_dev_fix_features(struct net_device *dev, 610c8f44affSMichał Mirosław netdev_features_t features) 6118a0427bbSMichał Mirosław { 6127da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 613b29d3145SBjørn Mork netdev_features_t old_features = features; 6148a0427bbSMichał Mirosław 615da08143bSMichal Kubeček features = netdev_intersect_features(features, real_dev->vlan_features); 616bc5787c6SMichał Mirosław features |= NETIF_F_RXCSUM; 617da08143bSMichal Kubeček features = netdev_intersect_features(features, real_dev->features); 618712ae51aSShan Wei 61953f6b708SToshiaki Makita features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE); 620f0a619ccSMichał Mirosław features |= NETIF_F_LLTX; 6218a0427bbSMichał Mirosław 6228a0427bbSMichał Mirosław return features; 6238a0427bbSMichał Mirosław } 6248a0427bbSMichał Mirosław 62557709798SDavid Decotigny static int vlan_ethtool_get_link_ksettings(struct net_device *dev, 62657709798SDavid Decotigny struct ethtool_link_ksettings *cmd) 627b3020061SStephen Hemminger { 6287da82c06SJiri Pirko const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 6294bc71cb9SJiri Pirko 63057709798SDavid Decotigny return __ethtool_get_link_ksettings(vlan->real_dev, cmd); 631b3020061SStephen Hemminger } 632b3020061SStephen Hemminger 633b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 634b3020061SStephen Hemminger struct ethtool_drvinfo *info) 635b3020061SStephen Hemminger { 6367826d43fSJiri Pirko strlcpy(info->driver, vlan_fullname, sizeof(info->driver)); 6377826d43fSJiri Pirko strlcpy(info->version, vlan_version, sizeof(info->version)); 6387826d43fSJiri Pirko strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); 639b3020061SStephen Hemminger } 640b3020061SStephen Hemminger 64137dd9255SRichard Cochran static int vlan_ethtool_get_ts_info(struct net_device *dev, 64237dd9255SRichard Cochran struct ethtool_ts_info *info) 64337dd9255SRichard Cochran { 64437dd9255SRichard Cochran const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 64537dd9255SRichard Cochran const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops; 64637dd9255SRichard Cochran 64737dd9255SRichard Cochran if (ops->get_ts_info) { 64837dd9255SRichard Cochran return ops->get_ts_info(vlan->real_dev, info); 64937dd9255SRichard Cochran } else { 65037dd9255SRichard Cochran info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | 65137dd9255SRichard Cochran SOF_TIMESTAMPING_SOFTWARE; 65237dd9255SRichard Cochran info->phc_index = -1; 65337dd9255SRichard Cochran } 65437dd9255SRichard Cochran 65537dd9255SRichard Cochran return 0; 65637dd9255SRichard Cochran } 65737dd9255SRichard Cochran 65828172739SEric Dumazet static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 6599793241fSEric Dumazet { 6604af429d2SEric Dumazet struct vlan_pcpu_stats *p; 6614af429d2SEric Dumazet u32 rx_errors = 0, tx_dropped = 0; 6629793241fSEric Dumazet int i; 6639793241fSEric Dumazet 6649793241fSEric Dumazet for_each_possible_cpu(i) { 6654af429d2SEric Dumazet u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; 6669618e2ffSEric Dumazet unsigned int start; 6679618e2ffSEric Dumazet 6687da82c06SJiri Pirko p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i); 6699618e2ffSEric Dumazet do { 67057a7744eSEric W. Biederman start = u64_stats_fetch_begin_irq(&p->syncp); 6719618e2ffSEric Dumazet rxpackets = p->rx_packets; 6729618e2ffSEric Dumazet rxbytes = p->rx_bytes; 6739618e2ffSEric Dumazet rxmulticast = p->rx_multicast; 6744af429d2SEric Dumazet txpackets = p->tx_packets; 6754af429d2SEric Dumazet txbytes = p->tx_bytes; 67657a7744eSEric W. Biederman } while (u64_stats_fetch_retry_irq(&p->syncp, start)); 6774af429d2SEric Dumazet 6784af429d2SEric Dumazet stats->rx_packets += rxpackets; 6794af429d2SEric Dumazet stats->rx_bytes += rxbytes; 6804af429d2SEric Dumazet stats->multicast += rxmulticast; 6814af429d2SEric Dumazet stats->tx_packets += txpackets; 6824af429d2SEric Dumazet stats->tx_bytes += txbytes; 6834af429d2SEric Dumazet /* rx_errors & tx_dropped are u32 */ 6844af429d2SEric Dumazet rx_errors += p->rx_errors; 6854af429d2SEric Dumazet tx_dropped += p->tx_dropped; 6869793241fSEric Dumazet } 6874af429d2SEric Dumazet stats->rx_errors = rx_errors; 6884af429d2SEric Dumazet stats->tx_dropped = tx_dropped; 6895a4ae5f6SLi RongQing 6909793241fSEric Dumazet return stats; 6919793241fSEric Dumazet } 6929793241fSEric Dumazet 6936d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 694de93cb2eSEric Dumazet static void vlan_dev_poll_controller(struct net_device *dev) 6956d4cdf47SBenjamin LaHaise { 6966d4cdf47SBenjamin LaHaise return; 6976d4cdf47SBenjamin LaHaise } 6986d4cdf47SBenjamin LaHaise 699a8779ec1SEric W. Biederman static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) 7006d4cdf47SBenjamin LaHaise { 701f3da3893SAmerigo Wang struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 702f3da3893SAmerigo Wang struct net_device *real_dev = vlan->real_dev; 7036d4cdf47SBenjamin LaHaise struct netpoll *netpoll; 7046d4cdf47SBenjamin LaHaise int err = 0; 7056d4cdf47SBenjamin LaHaise 706a8779ec1SEric W. Biederman netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); 7076d4cdf47SBenjamin LaHaise err = -ENOMEM; 7086d4cdf47SBenjamin LaHaise if (!netpoll) 7096d4cdf47SBenjamin LaHaise goto out; 7106d4cdf47SBenjamin LaHaise 711a8779ec1SEric W. Biederman err = __netpoll_setup(netpoll, real_dev); 7126d4cdf47SBenjamin LaHaise if (err) { 7136d4cdf47SBenjamin LaHaise kfree(netpoll); 7146d4cdf47SBenjamin LaHaise goto out; 7156d4cdf47SBenjamin LaHaise } 7166d4cdf47SBenjamin LaHaise 717f3da3893SAmerigo Wang vlan->netpoll = netpoll; 7186d4cdf47SBenjamin LaHaise 7196d4cdf47SBenjamin LaHaise out: 7206d4cdf47SBenjamin LaHaise return err; 7216d4cdf47SBenjamin LaHaise } 7226d4cdf47SBenjamin LaHaise 723de93cb2eSEric Dumazet static void vlan_dev_netpoll_cleanup(struct net_device *dev) 7246d4cdf47SBenjamin LaHaise { 725f3da3893SAmerigo Wang struct vlan_dev_priv *vlan= vlan_dev_priv(dev); 726f3da3893SAmerigo Wang struct netpoll *netpoll = vlan->netpoll; 7276d4cdf47SBenjamin LaHaise 7286d4cdf47SBenjamin LaHaise if (!netpoll) 7296d4cdf47SBenjamin LaHaise return; 7306d4cdf47SBenjamin LaHaise 731f3da3893SAmerigo Wang vlan->netpoll = NULL; 7326d4cdf47SBenjamin LaHaise 7332cde6acdSNeil Horman __netpoll_free_async(netpoll); 7346d4cdf47SBenjamin LaHaise } 7356d4cdf47SBenjamin LaHaise #endif /* CONFIG_NET_POLL_CONTROLLER */ 7366d4cdf47SBenjamin LaHaise 7372dbf6b50SNicolas Dichtel static int vlan_dev_get_iflink(const struct net_device *dev) 7382dbf6b50SNicolas Dichtel { 7392dbf6b50SNicolas Dichtel struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 7402dbf6b50SNicolas Dichtel 7412dbf6b50SNicolas Dichtel return real_dev->ifindex; 7422dbf6b50SNicolas Dichtel } 7432dbf6b50SNicolas Dichtel 74475b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 74557709798SDavid Decotigny .get_link_ksettings = vlan_ethtool_get_link_ksettings, 746b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 74775b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 74837dd9255SRichard Cochran .get_ts_info = vlan_ethtool_get_ts_info, 74975b8846aSPatrick McHardy }; 75075b8846aSPatrick McHardy 751656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 752656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 753656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 754656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 755656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 756656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 757f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 758f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 759f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 760f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 761f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 762f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 763cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 7649618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 765f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 766b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 767b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 7680af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 7690af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 770d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 7714ea09c9cSYi Zou .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, 772b85daa53SVasu Dev #endif 7736d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 7746d4cdf47SBenjamin LaHaise .ndo_poll_controller = vlan_dev_poll_controller, 7756d4cdf47SBenjamin LaHaise .ndo_netpoll_setup = vlan_dev_netpoll_setup, 7766d4cdf47SBenjamin LaHaise .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup, 7776d4cdf47SBenjamin LaHaise #endif 7788a0427bbSMichał Mirosław .ndo_fix_features = vlan_dev_fix_features, 7799d547833SIdo Schimmel .ndo_fdb_add = switchdev_port_fdb_add, 7809d547833SIdo Schimmel .ndo_fdb_del = switchdev_port_fdb_del, 7819d547833SIdo Schimmel .ndo_fdb_dump = switchdev_port_fdb_dump, 7829d547833SIdo Schimmel .ndo_bridge_setlink = switchdev_port_bridge_setlink, 7839d547833SIdo Schimmel .ndo_bridge_getlink = switchdev_port_bridge_getlink, 7849d547833SIdo Schimmel .ndo_bridge_dellink = switchdev_port_bridge_dellink, 785d38569abSVlad Yasevich .ndo_get_lock_subclass = vlan_dev_get_lock_subclass, 7862dbf6b50SNicolas Dichtel .ndo_get_iflink = vlan_dev_get_iflink, 787f7d1b9f5SEric Dumazet }; 788f7d1b9f5SEric Dumazet 789a48e5fafSEric Dumazet static void vlan_dev_free(struct net_device *dev) 790a48e5fafSEric Dumazet { 791a48e5fafSEric Dumazet struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 792a48e5fafSEric Dumazet 793a48e5fafSEric Dumazet free_percpu(vlan->vlan_pcpu_stats); 794a48e5fafSEric Dumazet vlan->vlan_pcpu_stats = NULL; 795a48e5fafSEric Dumazet free_netdev(dev); 796a48e5fafSEric Dumazet } 797a48e5fafSEric Dumazet 798ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 799ef3eb3e5SPatrick McHardy { 800ef3eb3e5SPatrick McHardy ether_setup(dev); 801ef3eb3e5SPatrick McHardy 8022e659c05SPhil Sutter dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE; 803e817af27SZhang Shengju dev->priv_flags |= IFF_UNICAST_FLT; 80402875878SEric Dumazet dev->priv_flags &= ~IFF_TX_SKB_SHARING; 80502875878SEric Dumazet netif_keep_dst(dev); 806ef3eb3e5SPatrick McHardy 807656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 808a48e5fafSEric Dumazet dev->destructor = vlan_dev_free; 80975b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 810ef3eb3e5SPatrick McHardy 811423049abSJoe Perches eth_zero_addr(dev->broadcast); 812ef3eb3e5SPatrick McHardy } 813