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 248308453aaSMike Manning bool vlan_dev_inherit_address(struct net_device *dev, 249308453aaSMike Manning struct net_device *real_dev) 250308453aaSMike Manning { 251308453aaSMike Manning if (dev->addr_assign_type != NET_ADDR_STOLEN) 252308453aaSMike Manning return false; 253308453aaSMike Manning 254308453aaSMike Manning ether_addr_copy(dev->dev_addr, real_dev->dev_addr); 255308453aaSMike Manning call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); 256308453aaSMike Manning return true; 257308453aaSMike Manning } 258308453aaSMike Manning 259ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 2601da177e4SLinus Torvalds { 2617da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 2628c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 2638c979c26SPatrick McHardy int err; 2648c979c26SPatrick McHardy 2655e756593SPatrick McHardy if (!(real_dev->flags & IFF_UP) && 2665e756593SPatrick McHardy !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 2671da177e4SLinus Torvalds return -ENETDOWN; 2681da177e4SLinus Torvalds 269308453aaSMike Manning if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) && 270308453aaSMike Manning !vlan_dev_inherit_address(dev, real_dev)) { 271a748ee24SJiri Pirko err = dev_uc_add(real_dev, dev->dev_addr); 2728c979c26SPatrick McHardy if (err < 0) 27389146504SWang Chen goto out; 2748c979c26SPatrick McHardy } 2758c979c26SPatrick McHardy 27689146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 27789146504SWang Chen err = dev_set_allmulti(real_dev, 1); 27889146504SWang Chen if (err < 0) 27989146504SWang Chen goto del_unicast; 28089146504SWang Chen } 28189146504SWang Chen if (dev->flags & IFF_PROMISC) { 28289146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 28389146504SWang Chen if (err < 0) 28489146504SWang Chen goto clear_allmulti; 28589146504SWang Chen } 28689146504SWang Chen 28707fc67beSJoe Perches ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr); 2886c78dcbdSPatrick McHardy 28970c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 29070c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 29170c03b49SPatrick McHardy 29286fbe9bbSDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 29386fbe9bbSDavid Ward vlan_mvrp_request_join(dev); 29486fbe9bbSDavid Ward 2950ac820eeSPhil Oester if (netif_carrier_ok(real_dev)) 296adc667e8SJay Vosburgh netif_carrier_on(dev); 2971da177e4SLinus Torvalds return 0; 29889146504SWang Chen 29989146504SWang Chen clear_allmulti: 30089146504SWang Chen if (dev->flags & IFF_ALLMULTI) 30189146504SWang Chen dev_set_allmulti(real_dev, -1); 30289146504SWang Chen del_unicast: 30353a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 304a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 30589146504SWang Chen out: 306adc667e8SJay Vosburgh netif_carrier_off(dev); 30789146504SWang Chen return err; 3081da177e4SLinus Torvalds } 3091da177e4SLinus Torvalds 310ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 3111da177e4SLinus Torvalds { 3127da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 31370c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 31470c03b49SPatrick McHardy 31556addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 316a748ee24SJiri Pirko dev_uc_unsync(real_dev, dev); 3176c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 3186c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 3196c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 3206c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 3216c78dcbdSPatrick McHardy 32253a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 323a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 3248c979c26SPatrick McHardy 325adc667e8SJay Vosburgh netif_carrier_off(dev); 3261da177e4SLinus Torvalds return 0; 3271da177e4SLinus Torvalds } 3281da177e4SLinus Torvalds 329ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 33039aaac11SPatrick McHardy { 3317da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 33239aaac11SPatrick McHardy struct sockaddr *addr = p; 33339aaac11SPatrick McHardy int err; 33439aaac11SPatrick McHardy 33539aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 33639aaac11SPatrick McHardy return -EADDRNOTAVAIL; 33739aaac11SPatrick McHardy 33839aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 33939aaac11SPatrick McHardy goto out; 34039aaac11SPatrick McHardy 34153a2b3a1SJoe Perches if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) { 342a748ee24SJiri Pirko err = dev_uc_add(real_dev, addr->sa_data); 34339aaac11SPatrick McHardy if (err < 0) 34439aaac11SPatrick McHardy return err; 34539aaac11SPatrick McHardy } 34639aaac11SPatrick McHardy 34753a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 348a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 34939aaac11SPatrick McHardy 35039aaac11SPatrick McHardy out: 35107fc67beSJoe Perches ether_addr_copy(dev->dev_addr, addr->sa_data); 35239aaac11SPatrick McHardy return 0; 35339aaac11SPatrick McHardy } 35439aaac11SPatrick McHardy 355ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 3561da177e4SLinus Torvalds { 3577da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 358656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 3591da177e4SLinus Torvalds struct ifreq ifrr; 3601da177e4SLinus Torvalds int err = -EOPNOTSUPP; 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 3631da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds switch (cmd) { 3661da177e4SLinus Torvalds case SIOCGMIIPHY: 3671da177e4SLinus Torvalds case SIOCGMIIREG: 3681da177e4SLinus Torvalds case SIOCSMIIREG: 369a6111d3cSStefan Sørensen case SIOCSHWTSTAMP: 370a6111d3cSStefan Sørensen case SIOCGHWTSTAMP: 371656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 372656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 3731da177e4SLinus Torvalds break; 3741da177e4SLinus Torvalds } 3751da177e4SLinus Torvalds 3761da177e4SLinus Torvalds if (!err) 3771da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds return err; 3801da177e4SLinus Torvalds } 3811da177e4SLinus Torvalds 382cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 383cc883d16SFrank Blaschka { 3847da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 385cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 386cc883d16SFrank Blaschka int err = 0; 387cc883d16SFrank Blaschka 388cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 3899d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 390cc883d16SFrank Blaschka 391cc883d16SFrank Blaschka return err; 392cc883d16SFrank Blaschka } 393cc883d16SFrank Blaschka 394f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 395b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 396b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 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 rc = 0; 401b85daa53SVasu Dev 402b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 403b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 404b85daa53SVasu Dev 405b85daa53SVasu Dev return rc; 406b85daa53SVasu Dev } 407b85daa53SVasu Dev 408b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 409b85daa53SVasu Dev { 4107da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 411b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 412b85daa53SVasu Dev int len = 0; 413b85daa53SVasu Dev 414b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 415b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 416b85daa53SVasu Dev 417b85daa53SVasu Dev return len; 418b85daa53SVasu Dev } 4190af46d99SYi Zou 4200af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 4210af46d99SYi Zou { 4227da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4230af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4240af46d99SYi Zou int rc = -EINVAL; 4250af46d99SYi Zou 4260af46d99SYi Zou if (ops->ndo_fcoe_enable) 4270af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 4280af46d99SYi Zou return rc; 4290af46d99SYi Zou } 4300af46d99SYi Zou 4310af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 4320af46d99SYi Zou { 4337da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4340af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4350af46d99SYi Zou int rc = -EINVAL; 4360af46d99SYi Zou 4370af46d99SYi Zou if (ops->ndo_fcoe_disable) 4380af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 4390af46d99SYi Zou return rc; 4400af46d99SYi Zou } 441d6534799SYi Zou 442d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 443d6534799SYi Zou { 4447da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 445d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 446d6534799SYi Zou int rc = -EINVAL; 447d6534799SYi Zou 448d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 449d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 450d6534799SYi Zou return rc; 451d6534799SYi Zou } 4524ea09c9cSYi Zou 4534ea09c9cSYi Zou static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, 4544ea09c9cSYi Zou struct scatterlist *sgl, unsigned int sgc) 4554ea09c9cSYi Zou { 4567da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4574ea09c9cSYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4584ea09c9cSYi Zou int rc = 0; 4594ea09c9cSYi Zou 4604ea09c9cSYi Zou if (ops->ndo_fcoe_ddp_target) 4614ea09c9cSYi Zou rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); 4624ea09c9cSYi Zou 4634ea09c9cSYi Zou return rc; 4644ea09c9cSYi Zou } 465b85daa53SVasu Dev #endif 466b85daa53SVasu Dev 467ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 4686c78dcbdSPatrick McHardy { 4697da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4706c78dcbdSPatrick McHardy 471deede2faSMatthijs Kooijman if (dev->flags & IFF_UP) { 4726c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 4736c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 4746c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 4756c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 4766c78dcbdSPatrick McHardy } 477deede2faSMatthijs Kooijman } 4786c78dcbdSPatrick McHardy 479e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 4801da177e4SLinus Torvalds { 481d38569abSVlad Yasevich dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 482d38569abSVlad Yasevich dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 4831da177e4SLinus Torvalds } 484ef3eb3e5SPatrick McHardy 485ef3eb3e5SPatrick McHardy /* 486ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 487ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 488ef3eb3e5SPatrick McHardy * separate class since they always nest. 489ef3eb3e5SPatrick McHardy */ 490ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 491cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 492ef3eb3e5SPatrick McHardy 493e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 494e8a0464cSDavid S. Miller struct netdev_queue *txq, 495e8a0464cSDavid S. Miller void *_subclass) 496c773e847SDavid S. Miller { 497c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 498e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 499e8a0464cSDavid S. Miller *(int *)_subclass); 500c773e847SDavid S. Miller } 501c773e847SDavid S. Miller 502c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 503c773e847SDavid S. Miller { 504cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 505cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 506cf508b12SDavid S. Miller subclass); 507e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 508c773e847SDavid S. Miller } 509c773e847SDavid S. Miller 510d38569abSVlad Yasevich static int vlan_dev_get_lock_subclass(struct net_device *dev) 511d38569abSVlad Yasevich { 512d38569abSVlad Yasevich return vlan_dev_priv(dev)->nest_level; 513d38569abSVlad Yasevich } 514d38569abSVlad Yasevich 515ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 516ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 517ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 518ef3eb3e5SPatrick McHardy }; 519ef3eb3e5SPatrick McHardy 5202205369aSDavid S. Miller static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev, 5212205369aSDavid S. Miller unsigned short type, 5222205369aSDavid S. Miller const void *daddr, const void *saddr, 5232205369aSDavid S. Miller unsigned int len) 5242205369aSDavid S. Miller { 5252205369aSDavid S. Miller struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 5262205369aSDavid S. Miller struct net_device *real_dev = vlan->real_dev; 5272205369aSDavid S. Miller 528dd38743bSPeter Boström if (saddr == NULL) 529dd38743bSPeter Boström saddr = dev->dev_addr; 530dd38743bSPeter Boström 5312205369aSDavid S. Miller return dev_hard_header(skb, real_dev, type, daddr, saddr, len); 5322205369aSDavid S. Miller } 5332205369aSDavid S. Miller 5342205369aSDavid S. Miller static const struct header_ops vlan_passthru_header_ops = { 5352205369aSDavid S. Miller .create = vlan_passthru_hard_header, 5362205369aSDavid S. Miller .parse = eth_header_parse, 5372205369aSDavid S. Miller }; 5382205369aSDavid S. Miller 539e949b09bSDoug Goldstein static struct device_type vlan_type = { 540e949b09bSDoug Goldstein .name = "vlan", 541e949b09bSDoug Goldstein }; 542e949b09bSDoug Goldstein 543213b15caSEric Dumazet static const struct net_device_ops vlan_netdev_ops; 544f7d1b9f5SEric Dumazet 545ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 546ef3eb3e5SPatrick McHardy { 5477da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 548ef3eb3e5SPatrick McHardy 549adc667e8SJay Vosburgh netif_carrier_off(dev); 550adc667e8SJay Vosburgh 551ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 552194dbcc8SJohn Fastabend dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | 553194dbcc8SJohn Fastabend IFF_MASTER | IFF_SLAVE); 554ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 555ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 556ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 557ef3eb3e5SPatrick McHardy 558a188222bSTom Herbert dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | 55953f6b708SToshiaki Makita NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | 56053692b1dSTom Herbert NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | 56162f2a3a4SMichał Mirosław NETIF_F_ALL_FCOE; 56262f2a3a4SMichał Mirosław 56353f6b708SToshiaki Makita dev->features |= real_dev->vlan_features | NETIF_F_LLTX | 56453f6b708SToshiaki Makita NETIF_F_GSO_SOFTWARE; 5651ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 566f6773c5eSEric Dumazet dev->gso_max_segs = real_dev->gso_max_segs; 5672adb956bSVlad Yasevich if (dev->features & NETIF_F_VLAN_FEATURES) 5682adb956bSVlad Yasevich netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n"); 5692adb956bSVlad Yasevich 5708d463504SToshiaki Makita dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE; 5715fb13570SPatrick McHardy 572ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 573ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 574ef3eb3e5SPatrick McHardy 575308453aaSMike Manning if (is_zero_ether_addr(dev->dev_addr)) { 576308453aaSMike Manning ether_addr_copy(dev->dev_addr, real_dev->dev_addr); 577308453aaSMike Manning dev->addr_assign_type = NET_ADDR_STOLEN; 578308453aaSMike Manning } 579ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 580ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 581ef3eb3e5SPatrick McHardy 582f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 583b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 584b85daa53SVasu Dev #endif 585b85daa53SVasu Dev 586d870bfb9SEric Dumazet dev->needed_headroom = real_dev->needed_headroom; 587fc0d48b8SVlad Yasevich if (vlan_hw_offload_capable(real_dev->features, 588fc0d48b8SVlad Yasevich vlan_dev_priv(dev)->vlan_proto)) { 5892205369aSDavid S. Miller dev->header_ops = &vlan_passthru_header_ops; 590ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 591ef3eb3e5SPatrick McHardy } else { 592ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 593ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 594636e19a3SJohn Fastabend } 595636e19a3SJohn Fastabend 596f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 597ef3eb3e5SPatrick McHardy 598e949b09bSDoug Goldstein SET_NETDEV_DEVTYPE(dev, &vlan_type); 599e949b09bSDoug Goldstein 600d38569abSVlad Yasevich vlan_dev_set_lockdep_class(dev, vlan_dev_get_lock_subclass(dev)); 6019793241fSEric Dumazet 6021c213bd2SWANG Cong vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); 6037da82c06SJiri Pirko if (!vlan_dev_priv(dev)->vlan_pcpu_stats) 6049793241fSEric Dumazet return -ENOMEM; 6059793241fSEric Dumazet 606ef3eb3e5SPatrick McHardy return 0; 607ef3eb3e5SPatrick McHardy } 608ef3eb3e5SPatrick McHardy 60923556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 61023556323SPavel Emelyanov { 61123556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 6127da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 61323556323SPavel Emelyanov int i; 61423556323SPavel Emelyanov 61523556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 61623556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 61723556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 61823556323SPavel Emelyanov kfree(pm); 61923556323SPavel Emelyanov } 62023556323SPavel Emelyanov } 62123556323SPavel Emelyanov } 62223556323SPavel Emelyanov 623c8f44affSMichał Mirosław static netdev_features_t vlan_dev_fix_features(struct net_device *dev, 624c8f44affSMichał Mirosław netdev_features_t features) 6258a0427bbSMichał Mirosław { 6267da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 627b29d3145SBjørn Mork netdev_features_t old_features = features; 6288a0427bbSMichał Mirosław 629da08143bSMichal Kubeček features = netdev_intersect_features(features, real_dev->vlan_features); 630bc5787c6SMichał Mirosław features |= NETIF_F_RXCSUM; 631da08143bSMichal Kubeček features = netdev_intersect_features(features, real_dev->features); 632712ae51aSShan Wei 63353f6b708SToshiaki Makita features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE); 634f0a619ccSMichał Mirosław features |= NETIF_F_LLTX; 6358a0427bbSMichał Mirosław 6368a0427bbSMichał Mirosław return features; 6378a0427bbSMichał Mirosław } 6388a0427bbSMichał Mirosław 63957709798SDavid Decotigny static int vlan_ethtool_get_link_ksettings(struct net_device *dev, 64057709798SDavid Decotigny struct ethtool_link_ksettings *cmd) 641b3020061SStephen Hemminger { 6427da82c06SJiri Pirko const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 6434bc71cb9SJiri Pirko 64457709798SDavid Decotigny return __ethtool_get_link_ksettings(vlan->real_dev, cmd); 645b3020061SStephen Hemminger } 646b3020061SStephen Hemminger 647b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 648b3020061SStephen Hemminger struct ethtool_drvinfo *info) 649b3020061SStephen Hemminger { 6507826d43fSJiri Pirko strlcpy(info->driver, vlan_fullname, sizeof(info->driver)); 6517826d43fSJiri Pirko strlcpy(info->version, vlan_version, sizeof(info->version)); 6527826d43fSJiri Pirko strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); 653b3020061SStephen Hemminger } 654b3020061SStephen Hemminger 65537dd9255SRichard Cochran static int vlan_ethtool_get_ts_info(struct net_device *dev, 65637dd9255SRichard Cochran struct ethtool_ts_info *info) 65737dd9255SRichard Cochran { 65837dd9255SRichard Cochran const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 65937dd9255SRichard Cochran const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops; 66037dd9255SRichard Cochran 66137dd9255SRichard Cochran if (ops->get_ts_info) { 66237dd9255SRichard Cochran return ops->get_ts_info(vlan->real_dev, info); 66337dd9255SRichard Cochran } else { 66437dd9255SRichard Cochran info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | 66537dd9255SRichard Cochran SOF_TIMESTAMPING_SOFTWARE; 66637dd9255SRichard Cochran info->phc_index = -1; 66737dd9255SRichard Cochran } 66837dd9255SRichard Cochran 66937dd9255SRichard Cochran return 0; 67037dd9255SRichard Cochran } 67137dd9255SRichard Cochran 67228172739SEric Dumazet static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 6739793241fSEric Dumazet { 6744af429d2SEric Dumazet struct vlan_pcpu_stats *p; 6754af429d2SEric Dumazet u32 rx_errors = 0, tx_dropped = 0; 6769793241fSEric Dumazet int i; 6779793241fSEric Dumazet 6789793241fSEric Dumazet for_each_possible_cpu(i) { 6794af429d2SEric Dumazet u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; 6809618e2ffSEric Dumazet unsigned int start; 6819618e2ffSEric Dumazet 6827da82c06SJiri Pirko p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i); 6839618e2ffSEric Dumazet do { 68457a7744eSEric W. Biederman start = u64_stats_fetch_begin_irq(&p->syncp); 6859618e2ffSEric Dumazet rxpackets = p->rx_packets; 6869618e2ffSEric Dumazet rxbytes = p->rx_bytes; 6879618e2ffSEric Dumazet rxmulticast = p->rx_multicast; 6884af429d2SEric Dumazet txpackets = p->tx_packets; 6894af429d2SEric Dumazet txbytes = p->tx_bytes; 69057a7744eSEric W. Biederman } while (u64_stats_fetch_retry_irq(&p->syncp, start)); 6914af429d2SEric Dumazet 6924af429d2SEric Dumazet stats->rx_packets += rxpackets; 6934af429d2SEric Dumazet stats->rx_bytes += rxbytes; 6944af429d2SEric Dumazet stats->multicast += rxmulticast; 6954af429d2SEric Dumazet stats->tx_packets += txpackets; 6964af429d2SEric Dumazet stats->tx_bytes += txbytes; 6974af429d2SEric Dumazet /* rx_errors & tx_dropped are u32 */ 6984af429d2SEric Dumazet rx_errors += p->rx_errors; 6994af429d2SEric Dumazet tx_dropped += p->tx_dropped; 7009793241fSEric Dumazet } 7014af429d2SEric Dumazet stats->rx_errors = rx_errors; 7024af429d2SEric Dumazet stats->tx_dropped = tx_dropped; 7035a4ae5f6SLi RongQing 7049793241fSEric Dumazet return stats; 7059793241fSEric Dumazet } 7069793241fSEric Dumazet 7076d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 708de93cb2eSEric Dumazet static void vlan_dev_poll_controller(struct net_device *dev) 7096d4cdf47SBenjamin LaHaise { 7106d4cdf47SBenjamin LaHaise return; 7116d4cdf47SBenjamin LaHaise } 7126d4cdf47SBenjamin LaHaise 713a8779ec1SEric W. Biederman static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) 7146d4cdf47SBenjamin LaHaise { 715f3da3893SAmerigo Wang struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 716f3da3893SAmerigo Wang struct net_device *real_dev = vlan->real_dev; 7176d4cdf47SBenjamin LaHaise struct netpoll *netpoll; 7186d4cdf47SBenjamin LaHaise int err = 0; 7196d4cdf47SBenjamin LaHaise 720a8779ec1SEric W. Biederman netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); 7216d4cdf47SBenjamin LaHaise err = -ENOMEM; 7226d4cdf47SBenjamin LaHaise if (!netpoll) 7236d4cdf47SBenjamin LaHaise goto out; 7246d4cdf47SBenjamin LaHaise 725a8779ec1SEric W. Biederman err = __netpoll_setup(netpoll, real_dev); 7266d4cdf47SBenjamin LaHaise if (err) { 7276d4cdf47SBenjamin LaHaise kfree(netpoll); 7286d4cdf47SBenjamin LaHaise goto out; 7296d4cdf47SBenjamin LaHaise } 7306d4cdf47SBenjamin LaHaise 731f3da3893SAmerigo Wang vlan->netpoll = netpoll; 7326d4cdf47SBenjamin LaHaise 7336d4cdf47SBenjamin LaHaise out: 7346d4cdf47SBenjamin LaHaise return err; 7356d4cdf47SBenjamin LaHaise } 7366d4cdf47SBenjamin LaHaise 737de93cb2eSEric Dumazet static void vlan_dev_netpoll_cleanup(struct net_device *dev) 7386d4cdf47SBenjamin LaHaise { 739f3da3893SAmerigo Wang struct vlan_dev_priv *vlan= vlan_dev_priv(dev); 740f3da3893SAmerigo Wang struct netpoll *netpoll = vlan->netpoll; 7416d4cdf47SBenjamin LaHaise 7426d4cdf47SBenjamin LaHaise if (!netpoll) 7436d4cdf47SBenjamin LaHaise return; 7446d4cdf47SBenjamin LaHaise 745f3da3893SAmerigo Wang vlan->netpoll = NULL; 7466d4cdf47SBenjamin LaHaise 7472cde6acdSNeil Horman __netpoll_free_async(netpoll); 7486d4cdf47SBenjamin LaHaise } 7496d4cdf47SBenjamin LaHaise #endif /* CONFIG_NET_POLL_CONTROLLER */ 7506d4cdf47SBenjamin LaHaise 7512dbf6b50SNicolas Dichtel static int vlan_dev_get_iflink(const struct net_device *dev) 7522dbf6b50SNicolas Dichtel { 7532dbf6b50SNicolas Dichtel struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 7542dbf6b50SNicolas Dichtel 7552dbf6b50SNicolas Dichtel return real_dev->ifindex; 7562dbf6b50SNicolas Dichtel } 7572dbf6b50SNicolas Dichtel 75875b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 75957709798SDavid Decotigny .get_link_ksettings = vlan_ethtool_get_link_ksettings, 760b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 76175b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 76237dd9255SRichard Cochran .get_ts_info = vlan_ethtool_get_ts_info, 76375b8846aSPatrick McHardy }; 76475b8846aSPatrick McHardy 765656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 766656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 767656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 768656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 769656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 770656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 771f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 772f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 773f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 774f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 775f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 776f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 777cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 7789618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 779f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 780b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 781b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 7820af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 7830af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 784d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 7854ea09c9cSYi Zou .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, 786b85daa53SVasu Dev #endif 7876d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 7886d4cdf47SBenjamin LaHaise .ndo_poll_controller = vlan_dev_poll_controller, 7896d4cdf47SBenjamin LaHaise .ndo_netpoll_setup = vlan_dev_netpoll_setup, 7906d4cdf47SBenjamin LaHaise .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup, 7916d4cdf47SBenjamin LaHaise #endif 7928a0427bbSMichał Mirosław .ndo_fix_features = vlan_dev_fix_features, 7939d547833SIdo Schimmel .ndo_fdb_add = switchdev_port_fdb_add, 7949d547833SIdo Schimmel .ndo_fdb_del = switchdev_port_fdb_del, 7959d547833SIdo Schimmel .ndo_fdb_dump = switchdev_port_fdb_dump, 7969d547833SIdo Schimmel .ndo_bridge_setlink = switchdev_port_bridge_setlink, 7979d547833SIdo Schimmel .ndo_bridge_getlink = switchdev_port_bridge_getlink, 7989d547833SIdo Schimmel .ndo_bridge_dellink = switchdev_port_bridge_dellink, 799d38569abSVlad Yasevich .ndo_get_lock_subclass = vlan_dev_get_lock_subclass, 8002dbf6b50SNicolas Dichtel .ndo_get_iflink = vlan_dev_get_iflink, 801f7d1b9f5SEric Dumazet }; 802f7d1b9f5SEric Dumazet 803a48e5fafSEric Dumazet static void vlan_dev_free(struct net_device *dev) 804a48e5fafSEric Dumazet { 805a48e5fafSEric Dumazet struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 806a48e5fafSEric Dumazet 807a48e5fafSEric Dumazet free_percpu(vlan->vlan_pcpu_stats); 808a48e5fafSEric Dumazet vlan->vlan_pcpu_stats = NULL; 809a48e5fafSEric Dumazet free_netdev(dev); 810a48e5fafSEric Dumazet } 811a48e5fafSEric Dumazet 812ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 813ef3eb3e5SPatrick McHardy { 814ef3eb3e5SPatrick McHardy ether_setup(dev); 815ef3eb3e5SPatrick McHardy 8162e659c05SPhil Sutter dev->priv_flags |= IFF_802_1Q_VLAN | IFF_NO_QUEUE; 817e817af27SZhang Shengju dev->priv_flags |= IFF_UNICAST_FLT; 81802875878SEric Dumazet dev->priv_flags &= ~IFF_TX_SKB_SHARING; 81902875878SEric Dumazet netif_keep_dst(dev); 820ef3eb3e5SPatrick McHardy 821656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 822a48e5fafSEric Dumazet dev->destructor = vlan_dev_free; 82375b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 824ef3eb3e5SPatrick McHardy 825423049abSJoe Perches eth_zero_addr(dev->broadcast); 826ef3eb3e5SPatrick McHardy } 827