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> 291da177e4SLinus Torvalds #include <linux/etherdevice.h> 3075b8846aSPatrick McHardy #include <linux/ethtool.h> 311da177e4SLinus Torvalds #include <net/arp.h> 321da177e4SLinus Torvalds 331da177e4SLinus Torvalds #include "vlan.h" 341da177e4SLinus Torvalds #include "vlanproc.h" 351da177e4SLinus Torvalds #include <linux/if_vlan.h> 366d4cdf47SBenjamin LaHaise #include <linux/netpoll.h> 371da177e4SLinus Torvalds 381da177e4SLinus Torvalds /* 391da177e4SLinus Torvalds * Rebuild the Ethernet MAC header. This is called after an ARP 401da177e4SLinus Torvalds * (or in future other address resolution) has completed on this 411da177e4SLinus Torvalds * sk_buff. We now let ARP fill in the other fields. 421da177e4SLinus Torvalds * 431da177e4SLinus Torvalds * This routine CANNOT use cached dst->neigh! 441da177e4SLinus Torvalds * Really, it is used only when dst->neigh is wrong. 451da177e4SLinus Torvalds * 461da177e4SLinus Torvalds * TODO: This needs a checkup, I'm ignorant here. --BLG 471da177e4SLinus Torvalds */ 48ef3eb3e5SPatrick McHardy static int vlan_dev_rebuild_header(struct sk_buff *skb) 491da177e4SLinus Torvalds { 501da177e4SLinus Torvalds struct net_device *dev = skb->dev; 511da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds switch (veth->h_vlan_encapsulated_proto) { 541da177e4SLinus Torvalds #ifdef CONFIG_INET 5560678040SArnaldo Carvalho de Melo case htons(ETH_P_IP): 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds /* TODO: Confirm this will work with VLAN headers... */ 581da177e4SLinus Torvalds return arp_find(veth->h_dest, skb); 591da177e4SLinus Torvalds #endif 601da177e4SLinus Torvalds default: 61afab2d29SJoe Perches pr_debug("%s: unable to resolve type %X addresses\n", 62d136fe72SAlexey Dobriyan dev->name, ntohs(veth->h_vlan_encapsulated_proto)); 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); 651da177e4SLinus Torvalds break; 663ff50b79SStephen Hemminger } 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds return 0; 691da177e4SLinus Torvalds } 701da177e4SLinus Torvalds 719bb8582eSPatrick McHardy static inline u16 722029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 731da177e4SLinus Torvalds { 742029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 751da177e4SLinus Torvalds 767da82c06SJiri Pirko mp = vlan_dev_priv(dev)->egress_priority_map[(skb->priority & 0xF)]; 771da177e4SLinus Torvalds while (mp) { 781da177e4SLinus Torvalds if (mp->priority == skb->priority) { 792029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 802029cc2cSPatrick McHardy * to mask correctly with the 812029cc2cSPatrick McHardy * VLAN's TCI */ 821da177e4SLinus Torvalds } 831da177e4SLinus Torvalds mp = mp->next; 841da177e4SLinus Torvalds } 851da177e4SLinus Torvalds return 0; 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds /* 891da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 901da177e4SLinus Torvalds * 911da177e4SLinus Torvalds * saddr=NULL means use device source address 921da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 931da177e4SLinus Torvalds * 941da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 951da177e4SLinus Torvalds * physical devices. 961da177e4SLinus Torvalds */ 97ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 983b04dddeSStephen Hemminger unsigned short type, 99ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 100ef3eb3e5SPatrick McHardy unsigned int len) 1011da177e4SLinus Torvalds { 1021da177e4SLinus Torvalds struct vlan_hdr *vhdr; 1031349fe9aSPatrick McHardy unsigned int vhdrlen = 0; 1049bb8582eSPatrick McHardy u16 vlan_tci = 0; 1051349fe9aSPatrick McHardy int rc; 1061da177e4SLinus Torvalds 1077da82c06SJiri Pirko if (!(vlan_dev_priv(dev)->flags & VLAN_FLAG_REORDER_HDR)) { 1081da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 1091da177e4SLinus Torvalds 1107da82c06SJiri Pirko vlan_tci = vlan_dev_priv(dev)->vlan_id; 1119bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 1129bb8582eSPatrick McHardy vhdr->h_vlan_TCI = htons(vlan_tci); 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds /* 115bf9ae538SOctavian Purdila * Set the protocol type. For a packet of type ETH_P_802_3/2 we 116bf9ae538SOctavian Purdila * put the length in here instead. 1171da177e4SLinus Torvalds */ 118bf9ae538SOctavian Purdila if (type != ETH_P_802_3 && type != ETH_P_802_2) 1191da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 1202029cc2cSPatrick McHardy else 1211da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 122279e172aSJerome Borsboom 123279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 1241349fe9aSPatrick McHardy type = ETH_P_8021Q; 1251349fe9aSPatrick McHardy vhdrlen = VLAN_HLEN; 1261da177e4SLinus Torvalds } 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 1291da177e4SLinus Torvalds if (saddr == NULL) 1301da177e4SLinus Torvalds saddr = dev->dev_addr; 1311da177e4SLinus Torvalds 1321da177e4SLinus Torvalds /* Now make the underlying real hard header */ 1337da82c06SJiri Pirko dev = vlan_dev_priv(dev)->real_dev; 1341349fe9aSPatrick McHardy rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); 1350c4e8581SStephen Hemminger if (rc > 0) 1361349fe9aSPatrick McHardy rc += vhdrlen; 1371da177e4SLinus Torvalds return rc; 1381da177e4SLinus Torvalds } 1391da177e4SLinus Torvalds 1406eacf8adSAmerigo Wang static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb) 1416eacf8adSAmerigo Wang { 1426eacf8adSAmerigo Wang #ifdef CONFIG_NET_POLL_CONTROLLER 1436eacf8adSAmerigo Wang if (vlan->netpoll) 1446eacf8adSAmerigo Wang netpoll_send_skb(vlan->netpoll, skb); 1456eacf8adSAmerigo Wang #else 1466eacf8adSAmerigo Wang BUG(); 1476eacf8adSAmerigo Wang #endif 1486eacf8adSAmerigo Wang return NETDEV_TX_OK; 1496eacf8adSAmerigo Wang } 1506eacf8adSAmerigo Wang 1516fef4c0cSStephen Hemminger static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, 1526fef4c0cSStephen Hemminger struct net_device *dev) 1531da177e4SLinus Torvalds { 1546eacf8adSAmerigo Wang struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 1551da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 1561a123a31SEric Dumazet unsigned int len; 1571a123a31SEric Dumazet int ret; 15855b01e86SDavid S. Miller 1591da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 1601da177e4SLinus Torvalds * 1611da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 1621da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 1631da177e4SLinus Torvalds */ 1646ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 1656eacf8adSAmerigo Wang vlan->flags & VLAN_FLAG_REORDER_HDR) { 1669bb8582eSPatrick McHardy u16 vlan_tci; 1676eacf8adSAmerigo Wang vlan_tci = vlan->vlan_id; 1689bb8582eSPatrick McHardy vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); 1699bb8582eSPatrick McHardy skb = __vlan_hwaccel_put_tag(skb, vlan_tci); 170636e19a3SJohn Fastabend } 1711da177e4SLinus Torvalds 1726eacf8adSAmerigo Wang skb->dev = vlan->real_dev; 1731a123a31SEric Dumazet len = skb->len; 1746eacf8adSAmerigo Wang if (unlikely(netpoll_tx_running(dev))) 1756eacf8adSAmerigo Wang return vlan_netpoll_send_skb(vlan, skb); 1766eacf8adSAmerigo Wang 1771a123a31SEric Dumazet ret = dev_queue_xmit(skb); 1781a123a31SEric Dumazet 1792d6c9ffcSEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 1804af429d2SEric Dumazet struct vlan_pcpu_stats *stats; 1814af429d2SEric Dumazet 1826eacf8adSAmerigo Wang stats = this_cpu_ptr(vlan->vlan_pcpu_stats); 1834af429d2SEric Dumazet u64_stats_update_begin(&stats->syncp); 1844af429d2SEric Dumazet stats->tx_packets++; 1854af429d2SEric Dumazet stats->tx_bytes += len; 186307f73dfSWei Yongjun u64_stats_update_end(&stats->syncp); 1874af429d2SEric Dumazet } else { 1886eacf8adSAmerigo Wang this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped); 1894af429d2SEric Dumazet } 1901a123a31SEric Dumazet 191cbbef5e1SPatrick McHardy return ret; 1921da177e4SLinus Torvalds } 1931da177e4SLinus Torvalds 194ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 1951da177e4SLinus Torvalds { 1961da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 1971da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 1981da177e4SLinus Torvalds */ 1997da82c06SJiri Pirko if (vlan_dev_priv(dev)->real_dev->mtu < new_mtu) 2001da177e4SLinus Torvalds return -ERANGE; 2011da177e4SLinus Torvalds 2021da177e4SLinus Torvalds dev->mtu = new_mtu; 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds return 0; 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds 207c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 2089bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 2091da177e4SLinus Torvalds { 2107da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 211b020cb48SPatrick McHardy 212b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 213b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 214b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 215b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 216b020cb48SPatrick McHardy 217b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds 220c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 2219bb8582eSPatrick McHardy u32 skb_prio, u16 vlan_prio) 2221da177e4SLinus Torvalds { 2237da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 2241da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 2251da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 22605423b24SEric Dumazet u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 229b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 2301da177e4SLinus Torvalds while (mp) { 2311da177e4SLinus Torvalds if (mp->priority == skb_prio) { 232b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 233b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 234b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 235b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 236b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 2371da177e4SLinus Torvalds return 0; 2381da177e4SLinus Torvalds } 2391da177e4SLinus Torvalds mp = mp->next; 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds /* Create a new mapping then. */ 243b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 2441da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 245c17d8874SPatrick McHardy if (!np) 246c17d8874SPatrick McHardy return -ENOBUFS; 247c17d8874SPatrick McHardy 2481da177e4SLinus Torvalds np->next = mp; 2491da177e4SLinus Torvalds np->priority = skb_prio; 250b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 251b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 252b020cb48SPatrick McHardy if (vlan_qos) 253b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 2541da177e4SLinus Torvalds return 0; 2551da177e4SLinus Torvalds } 2561da177e4SLinus Torvalds 257a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 258b3ce0325SPatrick McHardy int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) 2591da177e4SLinus Torvalds { 2607da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 261b3ce0325SPatrick McHardy u32 old_flags = vlan->flags; 262b3ce0325SPatrick McHardy 2635e756593SPatrick McHardy if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | 26486fbe9bbSDavid Ward VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP)) 2651da177e4SLinus Torvalds return -EINVAL; 266b3ce0325SPatrick McHardy 267b3ce0325SPatrick McHardy vlan->flags = (old_flags & ~mask) | (flags & mask); 26870c03b49SPatrick McHardy 26970c03b49SPatrick McHardy if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { 27070c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 27170c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 27270c03b49SPatrick McHardy else 27370c03b49SPatrick McHardy vlan_gvrp_request_leave(dev); 27470c03b49SPatrick McHardy } 27586fbe9bbSDavid Ward 27686fbe9bbSDavid Ward if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) { 27786fbe9bbSDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 27886fbe9bbSDavid Ward vlan_mvrp_request_join(dev); 27986fbe9bbSDavid Ward else 28086fbe9bbSDavid Ward vlan_mvrp_request_leave(dev); 28186fbe9bbSDavid Ward } 282b3ce0325SPatrick McHardy return 0; 2831da177e4SLinus Torvalds } 2841da177e4SLinus Torvalds 285c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 2861da177e4SLinus Torvalds { 2877da82c06SJiri Pirko strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23); 2881da177e4SLinus Torvalds } 2891da177e4SLinus Torvalds 290ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 2911da177e4SLinus Torvalds { 2927da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 2938c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 2948c979c26SPatrick McHardy int err; 2958c979c26SPatrick McHardy 2965e756593SPatrick McHardy if (!(real_dev->flags & IFF_UP) && 2975e756593SPatrick McHardy !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) 2981da177e4SLinus Torvalds return -ENETDOWN; 2991da177e4SLinus Torvalds 30053a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) { 301a748ee24SJiri Pirko err = dev_uc_add(real_dev, dev->dev_addr); 3028c979c26SPatrick McHardy if (err < 0) 30389146504SWang Chen goto out; 3048c979c26SPatrick McHardy } 3058c979c26SPatrick McHardy 30689146504SWang Chen if (dev->flags & IFF_ALLMULTI) { 30789146504SWang Chen err = dev_set_allmulti(real_dev, 1); 30889146504SWang Chen if (err < 0) 30989146504SWang Chen goto del_unicast; 31089146504SWang Chen } 31189146504SWang Chen if (dev->flags & IFF_PROMISC) { 31289146504SWang Chen err = dev_set_promiscuity(real_dev, 1); 31389146504SWang Chen if (err < 0) 31489146504SWang Chen goto clear_allmulti; 31589146504SWang Chen } 31689146504SWang Chen 31789146504SWang Chen memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 3186c78dcbdSPatrick McHardy 31970c03b49SPatrick McHardy if (vlan->flags & VLAN_FLAG_GVRP) 32070c03b49SPatrick McHardy vlan_gvrp_request_join(dev); 32170c03b49SPatrick McHardy 32286fbe9bbSDavid Ward if (vlan->flags & VLAN_FLAG_MVRP) 32386fbe9bbSDavid Ward vlan_mvrp_request_join(dev); 32486fbe9bbSDavid Ward 3250ac820eeSPhil Oester if (netif_carrier_ok(real_dev)) 326adc667e8SJay Vosburgh netif_carrier_on(dev); 3271da177e4SLinus Torvalds return 0; 32889146504SWang Chen 32989146504SWang Chen clear_allmulti: 33089146504SWang Chen if (dev->flags & IFF_ALLMULTI) 33189146504SWang Chen dev_set_allmulti(real_dev, -1); 33289146504SWang Chen del_unicast: 33353a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 334a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 33589146504SWang Chen out: 336adc667e8SJay Vosburgh netif_carrier_off(dev); 33789146504SWang Chen return err; 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 340ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 3411da177e4SLinus Torvalds { 3427da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 34370c03b49SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 34470c03b49SPatrick McHardy 34556addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 346a748ee24SJiri Pirko dev_uc_unsync(real_dev, dev); 3476c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 3486c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 3496c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 3506c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 3516c78dcbdSPatrick McHardy 35253a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 353a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 3548c979c26SPatrick McHardy 355adc667e8SJay Vosburgh netif_carrier_off(dev); 3561da177e4SLinus Torvalds return 0; 3571da177e4SLinus Torvalds } 3581da177e4SLinus Torvalds 359ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 36039aaac11SPatrick McHardy { 3617da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 36239aaac11SPatrick McHardy struct sockaddr *addr = p; 36339aaac11SPatrick McHardy int err; 36439aaac11SPatrick McHardy 36539aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 36639aaac11SPatrick McHardy return -EADDRNOTAVAIL; 36739aaac11SPatrick McHardy 36839aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 36939aaac11SPatrick McHardy goto out; 37039aaac11SPatrick McHardy 37153a2b3a1SJoe Perches if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) { 372a748ee24SJiri Pirko err = dev_uc_add(real_dev, addr->sa_data); 37339aaac11SPatrick McHardy if (err < 0) 37439aaac11SPatrick McHardy return err; 37539aaac11SPatrick McHardy } 37639aaac11SPatrick McHardy 37753a2b3a1SJoe Perches if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) 378a748ee24SJiri Pirko dev_uc_del(real_dev, dev->dev_addr); 37939aaac11SPatrick McHardy 38039aaac11SPatrick McHardy out: 38139aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 38239aaac11SPatrick McHardy return 0; 38339aaac11SPatrick McHardy } 38439aaac11SPatrick McHardy 385ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 3861da177e4SLinus Torvalds { 3877da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 388656299f7SStephen Hemminger const struct net_device_ops *ops = real_dev->netdev_ops; 3891da177e4SLinus Torvalds struct ifreq ifrr; 3901da177e4SLinus Torvalds int err = -EOPNOTSUPP; 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 3931da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 3941da177e4SLinus Torvalds 3951da177e4SLinus Torvalds switch (cmd) { 3961da177e4SLinus Torvalds case SIOCGMIIPHY: 3971da177e4SLinus Torvalds case SIOCGMIIREG: 3981da177e4SLinus Torvalds case SIOCSMIIREG: 399656299f7SStephen Hemminger if (netif_device_present(real_dev) && ops->ndo_do_ioctl) 400656299f7SStephen Hemminger err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); 4011da177e4SLinus Torvalds break; 4021da177e4SLinus Torvalds } 4031da177e4SLinus Torvalds 4041da177e4SLinus Torvalds if (!err) 4051da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds return err; 4081da177e4SLinus Torvalds } 4091da177e4SLinus Torvalds 410cc883d16SFrank Blaschka static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) 411cc883d16SFrank Blaschka { 4127da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 413cc883d16SFrank Blaschka const struct net_device_ops *ops = real_dev->netdev_ops; 414cc883d16SFrank Blaschka int err = 0; 415cc883d16SFrank Blaschka 416cc883d16SFrank Blaschka if (netif_device_present(real_dev) && ops->ndo_neigh_setup) 4179d40bbdaSDavid S. Miller err = ops->ndo_neigh_setup(real_dev, pa); 418cc883d16SFrank Blaschka 419cc883d16SFrank Blaschka return err; 420cc883d16SFrank Blaschka } 421cc883d16SFrank Blaschka 422f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 423b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, 424b85daa53SVasu Dev struct scatterlist *sgl, unsigned int sgc) 425b85daa53SVasu Dev { 4267da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 427b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 428b85daa53SVasu Dev int rc = 0; 429b85daa53SVasu Dev 430b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_setup) 431b85daa53SVasu Dev rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); 432b85daa53SVasu Dev 433b85daa53SVasu Dev return rc; 434b85daa53SVasu Dev } 435b85daa53SVasu Dev 436b85daa53SVasu Dev static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) 437b85daa53SVasu Dev { 4387da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 439b85daa53SVasu Dev const struct net_device_ops *ops = real_dev->netdev_ops; 440b85daa53SVasu Dev int len = 0; 441b85daa53SVasu Dev 442b85daa53SVasu Dev if (ops->ndo_fcoe_ddp_done) 443b85daa53SVasu Dev len = ops->ndo_fcoe_ddp_done(real_dev, xid); 444b85daa53SVasu Dev 445b85daa53SVasu Dev return len; 446b85daa53SVasu Dev } 4470af46d99SYi Zou 4480af46d99SYi Zou static int vlan_dev_fcoe_enable(struct net_device *dev) 4490af46d99SYi Zou { 4507da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4510af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4520af46d99SYi Zou int rc = -EINVAL; 4530af46d99SYi Zou 4540af46d99SYi Zou if (ops->ndo_fcoe_enable) 4550af46d99SYi Zou rc = ops->ndo_fcoe_enable(real_dev); 4560af46d99SYi Zou return rc; 4570af46d99SYi Zou } 4580af46d99SYi Zou 4590af46d99SYi Zou static int vlan_dev_fcoe_disable(struct net_device *dev) 4600af46d99SYi Zou { 4617da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4620af46d99SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4630af46d99SYi Zou int rc = -EINVAL; 4640af46d99SYi Zou 4650af46d99SYi Zou if (ops->ndo_fcoe_disable) 4660af46d99SYi Zou rc = ops->ndo_fcoe_disable(real_dev); 4670af46d99SYi Zou return rc; 4680af46d99SYi Zou } 469d6534799SYi Zou 470d6534799SYi Zou static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) 471d6534799SYi Zou { 4727da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 473d6534799SYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 474d6534799SYi Zou int rc = -EINVAL; 475d6534799SYi Zou 476d6534799SYi Zou if (ops->ndo_fcoe_get_wwn) 477d6534799SYi Zou rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); 478d6534799SYi Zou return rc; 479d6534799SYi Zou } 4804ea09c9cSYi Zou 4814ea09c9cSYi Zou static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, 4824ea09c9cSYi Zou struct scatterlist *sgl, unsigned int sgc) 4834ea09c9cSYi Zou { 4847da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4854ea09c9cSYi Zou const struct net_device_ops *ops = real_dev->netdev_ops; 4864ea09c9cSYi Zou int rc = 0; 4874ea09c9cSYi Zou 4884ea09c9cSYi Zou if (ops->ndo_fcoe_ddp_target) 4894ea09c9cSYi Zou rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); 4904ea09c9cSYi Zou 4914ea09c9cSYi Zou return rc; 4924ea09c9cSYi Zou } 493b85daa53SVasu Dev #endif 494b85daa53SVasu Dev 495ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 4966c78dcbdSPatrick McHardy { 4977da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 4986c78dcbdSPatrick McHardy 499deede2faSMatthijs Kooijman if (dev->flags & IFF_UP) { 5006c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 5016c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 5026c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 5036c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 5046c78dcbdSPatrick McHardy } 505deede2faSMatthijs Kooijman } 5066c78dcbdSPatrick McHardy 507e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 5081da177e4SLinus Torvalds { 5097da82c06SJiri Pirko dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 5107da82c06SJiri Pirko dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev); 5111da177e4SLinus Torvalds } 512ef3eb3e5SPatrick McHardy 513ef3eb3e5SPatrick McHardy /* 514ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 515ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 516ef3eb3e5SPatrick McHardy * separate class since they always nest. 517ef3eb3e5SPatrick McHardy */ 518ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 519cf508b12SDavid S. Miller static struct lock_class_key vlan_netdev_addr_lock_key; 520ef3eb3e5SPatrick McHardy 521e8a0464cSDavid S. Miller static void vlan_dev_set_lockdep_one(struct net_device *dev, 522e8a0464cSDavid S. Miller struct netdev_queue *txq, 523e8a0464cSDavid S. Miller void *_subclass) 524c773e847SDavid S. Miller { 525c773e847SDavid S. Miller lockdep_set_class_and_subclass(&txq->_xmit_lock, 526e8a0464cSDavid S. Miller &vlan_netdev_xmit_lock_key, 527e8a0464cSDavid S. Miller *(int *)_subclass); 528c773e847SDavid S. Miller } 529c773e847SDavid S. Miller 530c773e847SDavid S. Miller static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) 531c773e847SDavid S. Miller { 532cf508b12SDavid S. Miller lockdep_set_class_and_subclass(&dev->addr_list_lock, 533cf508b12SDavid S. Miller &vlan_netdev_addr_lock_key, 534cf508b12SDavid S. Miller subclass); 535e8a0464cSDavid S. Miller netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); 536c773e847SDavid S. Miller } 537c773e847SDavid S. Miller 538ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 539ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 540ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 541ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 542ef3eb3e5SPatrick McHardy }; 543ef3eb3e5SPatrick McHardy 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 int subclass = 0; 554ef3eb3e5SPatrick McHardy 555adc667e8SJay Vosburgh netif_carrier_off(dev); 556adc667e8SJay Vosburgh 557ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 558194dbcc8SJohn Fastabend dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | 559194dbcc8SJohn Fastabend IFF_MASTER | IFF_SLAVE); 560ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 561ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 562ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 563ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 564ef3eb3e5SPatrick McHardy 56562f2a3a4SMichał Mirosław dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG | 56662f2a3a4SMichał Mirosław NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | 56762f2a3a4SMichał Mirosław NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM | 56862f2a3a4SMichał Mirosław NETIF_F_ALL_FCOE; 56962f2a3a4SMichał Mirosław 5708a0427bbSMichał Mirosław dev->features |= real_dev->vlan_features | NETIF_F_LLTX; 5711ae4be22SAlexander Duyck dev->gso_max_size = real_dev->gso_max_size; 5725fb13570SPatrick McHardy 573ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 574ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 575ef3eb3e5SPatrick McHardy 576ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 577ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 578ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 579ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 580ef3eb3e5SPatrick McHardy 581f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 582b85daa53SVasu Dev dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; 583b85daa53SVasu Dev #endif 584b85daa53SVasu Dev 585d870bfb9SEric Dumazet dev->needed_headroom = real_dev->needed_headroom; 586f646968fSPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_CTAG_TX) { 587ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 588ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 589ef3eb3e5SPatrick McHardy } else { 590ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 591ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 592636e19a3SJohn Fastabend } 593636e19a3SJohn Fastabend 594f7d1b9f5SEric Dumazet dev->netdev_ops = &vlan_netdev_ops; 595ef3eb3e5SPatrick McHardy 596e949b09bSDoug Goldstein SET_NETDEV_DEVTYPE(dev, &vlan_type); 597e949b09bSDoug Goldstein 59826a25239SJoonwoo Park if (is_vlan_dev(real_dev)) 599ef3eb3e5SPatrick McHardy subclass = 1; 600ef3eb3e5SPatrick McHardy 601c773e847SDavid S. Miller vlan_dev_set_lockdep_class(dev, subclass); 6029793241fSEric Dumazet 6037da82c06SJiri Pirko vlan_dev_priv(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats); 6047da82c06SJiri Pirko if (!vlan_dev_priv(dev)->vlan_pcpu_stats) 6059793241fSEric Dumazet return -ENOMEM; 6069793241fSEric Dumazet 607ef3eb3e5SPatrick McHardy return 0; 608ef3eb3e5SPatrick McHardy } 609ef3eb3e5SPatrick McHardy 61023556323SPavel Emelyanov static void vlan_dev_uninit(struct net_device *dev) 61123556323SPavel Emelyanov { 61223556323SPavel Emelyanov struct vlan_priority_tci_mapping *pm; 6137da82c06SJiri Pirko struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 61423556323SPavel Emelyanov int i; 61523556323SPavel Emelyanov 6164af429d2SEric Dumazet free_percpu(vlan->vlan_pcpu_stats); 6174af429d2SEric Dumazet vlan->vlan_pcpu_stats = NULL; 61823556323SPavel Emelyanov for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { 61923556323SPavel Emelyanov while ((pm = vlan->egress_priority_map[i]) != NULL) { 62023556323SPavel Emelyanov vlan->egress_priority_map[i] = pm->next; 62123556323SPavel Emelyanov kfree(pm); 62223556323SPavel Emelyanov } 62323556323SPavel Emelyanov } 62423556323SPavel Emelyanov } 62523556323SPavel Emelyanov 626c8f44affSMichał Mirosław static netdev_features_t vlan_dev_fix_features(struct net_device *dev, 627c8f44affSMichał Mirosław netdev_features_t features) 6288a0427bbSMichał Mirosław { 6297da82c06SJiri Pirko struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; 630712ae51aSShan Wei u32 old_features = features; 6318a0427bbSMichał Mirosław 632f0a619ccSMichał Mirosław features &= real_dev->vlan_features; 633bc5787c6SMichał Mirosław features |= NETIF_F_RXCSUM; 634bc5787c6SMichał Mirosław features &= real_dev->features; 635712ae51aSShan Wei 636712ae51aSShan Wei features |= old_features & NETIF_F_SOFT_FEATURES; 637f0a619ccSMichał Mirosław features |= NETIF_F_LLTX; 6388a0427bbSMichał Mirosław 6398a0427bbSMichał Mirosław return features; 6408a0427bbSMichał Mirosław } 6418a0427bbSMichał Mirosław 642b3020061SStephen Hemminger static int vlan_ethtool_get_settings(struct net_device *dev, 643b3020061SStephen Hemminger struct ethtool_cmd *cmd) 644b3020061SStephen Hemminger { 6457da82c06SJiri Pirko const struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 6464bc71cb9SJiri Pirko 6474bc71cb9SJiri Pirko return __ethtool_get_settings(vlan->real_dev, cmd); 648b3020061SStephen Hemminger } 649b3020061SStephen Hemminger 650b3020061SStephen Hemminger static void vlan_ethtool_get_drvinfo(struct net_device *dev, 651b3020061SStephen Hemminger struct ethtool_drvinfo *info) 652b3020061SStephen Hemminger { 6537826d43fSJiri Pirko strlcpy(info->driver, vlan_fullname, sizeof(info->driver)); 6547826d43fSJiri Pirko strlcpy(info->version, vlan_version, sizeof(info->version)); 6557826d43fSJiri Pirko strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); 656b3020061SStephen Hemminger } 657b3020061SStephen Hemminger 65828172739SEric Dumazet static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 6599793241fSEric Dumazet { 6609793241fSEric Dumazet 6617da82c06SJiri Pirko if (vlan_dev_priv(dev)->vlan_pcpu_stats) { 6624af429d2SEric Dumazet struct vlan_pcpu_stats *p; 6634af429d2SEric Dumazet u32 rx_errors = 0, tx_dropped = 0; 6649793241fSEric Dumazet int i; 6659793241fSEric Dumazet 6669793241fSEric Dumazet for_each_possible_cpu(i) { 6674af429d2SEric Dumazet u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; 6689618e2ffSEric Dumazet unsigned int start; 6699618e2ffSEric Dumazet 6707da82c06SJiri Pirko p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i); 6719618e2ffSEric Dumazet do { 6729618e2ffSEric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 6739618e2ffSEric Dumazet rxpackets = p->rx_packets; 6749618e2ffSEric Dumazet rxbytes = p->rx_bytes; 6759618e2ffSEric Dumazet rxmulticast = p->rx_multicast; 6764af429d2SEric Dumazet txpackets = p->tx_packets; 6774af429d2SEric Dumazet txbytes = p->tx_bytes; 6789618e2ffSEric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 6794af429d2SEric Dumazet 6804af429d2SEric Dumazet stats->rx_packets += rxpackets; 6814af429d2SEric Dumazet stats->rx_bytes += rxbytes; 6824af429d2SEric Dumazet stats->multicast += rxmulticast; 6834af429d2SEric Dumazet stats->tx_packets += txpackets; 6844af429d2SEric Dumazet stats->tx_bytes += txbytes; 6854af429d2SEric Dumazet /* rx_errors & tx_dropped are u32 */ 6864af429d2SEric Dumazet rx_errors += p->rx_errors; 6874af429d2SEric Dumazet tx_dropped += p->tx_dropped; 6889793241fSEric Dumazet } 6894af429d2SEric Dumazet stats->rx_errors = rx_errors; 6904af429d2SEric Dumazet stats->tx_dropped = tx_dropped; 6919793241fSEric Dumazet } 6929793241fSEric Dumazet return stats; 6939793241fSEric Dumazet } 6949793241fSEric Dumazet 6956d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 696de93cb2eSEric Dumazet static void vlan_dev_poll_controller(struct net_device *dev) 6976d4cdf47SBenjamin LaHaise { 6986d4cdf47SBenjamin LaHaise return; 6996d4cdf47SBenjamin LaHaise } 7006d4cdf47SBenjamin LaHaise 70147be03a2SAmerigo Wang static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo, 70247be03a2SAmerigo Wang gfp_t gfp) 7036d4cdf47SBenjamin LaHaise { 704f3da3893SAmerigo Wang struct vlan_dev_priv *vlan = vlan_dev_priv(dev); 705f3da3893SAmerigo Wang struct net_device *real_dev = vlan->real_dev; 7066d4cdf47SBenjamin LaHaise struct netpoll *netpoll; 7076d4cdf47SBenjamin LaHaise int err = 0; 7086d4cdf47SBenjamin LaHaise 70947be03a2SAmerigo Wang netpoll = kzalloc(sizeof(*netpoll), gfp); 7106d4cdf47SBenjamin LaHaise err = -ENOMEM; 7116d4cdf47SBenjamin LaHaise if (!netpoll) 7126d4cdf47SBenjamin LaHaise goto out; 7136d4cdf47SBenjamin LaHaise 71447be03a2SAmerigo Wang err = __netpoll_setup(netpoll, real_dev, gfp); 7156d4cdf47SBenjamin LaHaise if (err) { 7166d4cdf47SBenjamin LaHaise kfree(netpoll); 7176d4cdf47SBenjamin LaHaise goto out; 7186d4cdf47SBenjamin LaHaise } 7196d4cdf47SBenjamin LaHaise 720f3da3893SAmerigo Wang vlan->netpoll = netpoll; 7216d4cdf47SBenjamin LaHaise 7226d4cdf47SBenjamin LaHaise out: 7236d4cdf47SBenjamin LaHaise return err; 7246d4cdf47SBenjamin LaHaise } 7256d4cdf47SBenjamin LaHaise 726de93cb2eSEric Dumazet static void vlan_dev_netpoll_cleanup(struct net_device *dev) 7276d4cdf47SBenjamin LaHaise { 728f3da3893SAmerigo Wang struct vlan_dev_priv *vlan= vlan_dev_priv(dev); 729f3da3893SAmerigo Wang struct netpoll *netpoll = vlan->netpoll; 7306d4cdf47SBenjamin LaHaise 7316d4cdf47SBenjamin LaHaise if (!netpoll) 7326d4cdf47SBenjamin LaHaise return; 7336d4cdf47SBenjamin LaHaise 734f3da3893SAmerigo Wang vlan->netpoll = NULL; 7356d4cdf47SBenjamin LaHaise 7362cde6acdSNeil Horman __netpoll_free_async(netpoll); 7376d4cdf47SBenjamin LaHaise } 7386d4cdf47SBenjamin LaHaise #endif /* CONFIG_NET_POLL_CONTROLLER */ 7396d4cdf47SBenjamin LaHaise 74075b8846aSPatrick McHardy static const struct ethtool_ops vlan_ethtool_ops = { 741b3020061SStephen Hemminger .get_settings = vlan_ethtool_get_settings, 742b3020061SStephen Hemminger .get_drvinfo = vlan_ethtool_get_drvinfo, 74375b8846aSPatrick McHardy .get_link = ethtool_op_get_link, 74475b8846aSPatrick McHardy }; 74575b8846aSPatrick McHardy 746656299f7SStephen Hemminger static const struct net_device_ops vlan_netdev_ops = { 747656299f7SStephen Hemminger .ndo_change_mtu = vlan_dev_change_mtu, 748656299f7SStephen Hemminger .ndo_init = vlan_dev_init, 749656299f7SStephen Hemminger .ndo_uninit = vlan_dev_uninit, 750656299f7SStephen Hemminger .ndo_open = vlan_dev_open, 751656299f7SStephen Hemminger .ndo_stop = vlan_dev_stop, 752f7d1b9f5SEric Dumazet .ndo_start_xmit = vlan_dev_hard_start_xmit, 753f7d1b9f5SEric Dumazet .ndo_validate_addr = eth_validate_addr, 754f7d1b9f5SEric Dumazet .ndo_set_mac_address = vlan_dev_set_mac_address, 755f7d1b9f5SEric Dumazet .ndo_set_rx_mode = vlan_dev_set_rx_mode, 756f7d1b9f5SEric Dumazet .ndo_change_rx_flags = vlan_dev_change_rx_flags, 757f7d1b9f5SEric Dumazet .ndo_do_ioctl = vlan_dev_ioctl, 758cc883d16SFrank Blaschka .ndo_neigh_setup = vlan_dev_neigh_setup, 7599618e2ffSEric Dumazet .ndo_get_stats64 = vlan_dev_get_stats64, 760f4d5392eSAmerigo Wang #if IS_ENABLED(CONFIG_FCOE) 761b85daa53SVasu Dev .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, 762b85daa53SVasu Dev .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, 7630af46d99SYi Zou .ndo_fcoe_enable = vlan_dev_fcoe_enable, 7640af46d99SYi Zou .ndo_fcoe_disable = vlan_dev_fcoe_disable, 765d6534799SYi Zou .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, 7664ea09c9cSYi Zou .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, 767b85daa53SVasu Dev #endif 7686d4cdf47SBenjamin LaHaise #ifdef CONFIG_NET_POLL_CONTROLLER 7696d4cdf47SBenjamin LaHaise .ndo_poll_controller = vlan_dev_poll_controller, 7706d4cdf47SBenjamin LaHaise .ndo_netpoll_setup = vlan_dev_netpoll_setup, 7716d4cdf47SBenjamin LaHaise .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup, 7726d4cdf47SBenjamin LaHaise #endif 7738a0427bbSMichał Mirosław .ndo_fix_features = vlan_dev_fix_features, 774f7d1b9f5SEric Dumazet }; 775f7d1b9f5SEric Dumazet 776ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 777ef3eb3e5SPatrick McHardy { 778ef3eb3e5SPatrick McHardy ether_setup(dev); 779ef3eb3e5SPatrick McHardy 780ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 781550fd08cSNeil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 782ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 783ef3eb3e5SPatrick McHardy 784656299f7SStephen Hemminger dev->netdev_ops = &vlan_netdev_ops; 785ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 78675b8846aSPatrick McHardy dev->ethtool_ops = &vlan_ethtool_ops; 787ef3eb3e5SPatrick McHardy 788ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 789ef3eb3e5SPatrick McHardy } 790