| /* -*- linux-c -*- |
| * INET 802.1Q VLAN |
| * Ethernet-type device handling. |
| * |
| * Authors: Ben Greear <greearb@candelatech.com> |
| * Please send support related email to: netdev@vger.kernel.org |
| * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html |
| * |
| * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> |
| * - reset skb->pkt_type on incoming packets when MAC was changed |
| * - see that changed MAC is saddr for outgoing packets |
| * Oct 20, 2001: Ard van Breeman: |
| * - Fix MC-list, finally. |
| * - Flush MC-list on VLAN destroy. |
| * |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/skbuff.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/ethtool.h> |
| #include <net/arp.h> |
| |
| #include "vlan.h" |
| #include "vlanproc.h" |
| #include <linux/if_vlan.h> |
| |
| /* |
| * Rebuild the Ethernet MAC header. This is called after an ARP |
| * (or in future other address resolution) has completed on this |
| * sk_buff. We now let ARP fill in the other fields. |
| * |
| * This routine CANNOT use cached dst->neigh! |
| * Really, it is used only when dst->neigh is wrong. |
| * |
| * TODO: This needs a checkup, I'm ignorant here. --BLG |
| */ |
| static int vlan_dev_rebuild_header(struct sk_buff *skb) |
| { |
| struct net_device *dev = skb->dev; |
| struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
| |
| switch (veth->h_vlan_encapsulated_proto) { |
| #ifdef CONFIG_INET |
| case htons(ETH_P_IP): |
| |
| /* TODO: Confirm this will work with VLAN headers... */ |
| return arp_find(veth->h_dest, skb); |
| #endif |
| default: |
| pr_debug("%s: unable to resolve type %X addresses\n", |
| dev->name, ntohs(veth->h_vlan_encapsulated_proto)); |
| |
| memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static inline u16 |
| vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) |
| { |
| struct vlan_priority_tci_mapping *mp; |
| |
| mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; |
| while (mp) { |
| if (mp->priority == skb->priority) { |
| return mp->vlan_qos; /* This should already be shifted |
| * to mask correctly with the |
| * VLAN's TCI */ |
| } |
| mp = mp->next; |
| } |
| return 0; |
| } |
| |
| /* |
| * Create the VLAN header for an arbitrary protocol layer |
| * |
| * saddr=NULL means use device source address |
| * daddr=NULL means leave destination address (eg unresolved arp) |
| * |
| * This is called when the SKB is moving down the stack towards the |
| * physical devices. |
| */ |
| static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
| unsigned short type, |
| const void *daddr, const void *saddr, |
| unsigned int len) |
| { |
| struct vlan_hdr *vhdr; |
| unsigned int vhdrlen = 0; |
| u16 vlan_tci = 0; |
| int rc; |
| |
| if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { |
| vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); |
| |
| vlan_tci = vlan_dev_info(dev)->vlan_id; |
| vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); |
| vhdr->h_vlan_TCI = htons(vlan_tci); |
| |
| /* |
| * Set the protocol type. For a packet of type ETH_P_802_3/2 we |
| * put the length in here instead. |
| */ |
| if (type != ETH_P_802_3 && type != ETH_P_802_2) |
| vhdr->h_vlan_encapsulated_proto = htons(type); |
| else |
| vhdr->h_vlan_encapsulated_proto = htons(len); |
| |
| skb->protocol = htons(ETH_P_8021Q); |
| type = ETH_P_8021Q; |
| vhdrlen = VLAN_HLEN; |
| } |
| |
| /* Before delegating work to the lower layer, enter our MAC-address */ |
| if (saddr == NULL) |
| saddr = dev->dev_addr; |
| |
| /* Now make the underlying real hard header */ |
| dev = vlan_dev_info(dev)->real_dev; |
| rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); |
| if (rc > 0) |
| rc += vhdrlen; |
| return rc; |
| } |
| |
| static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, |
| struct net_device *dev) |
| { |
| struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
| unsigned int len; |
| int ret; |
| |
| /* Handle non-VLAN frames if they are sent to us, for example by DHCP. |
| * |
| * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING |
| * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... |
| */ |
| if (veth->h_vlan_proto != htons(ETH_P_8021Q) || |
| vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { |
| u16 vlan_tci; |
| vlan_tci = vlan_dev_info(dev)->vlan_id; |
| vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); |
| skb = __vlan_hwaccel_put_tag(skb, vlan_tci); |
| } |
| |
| skb_set_dev(skb, vlan_dev_info(dev)->real_dev); |
| len = skb->len; |
| ret = dev_queue_xmit(skb); |
| |
| if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
| struct vlan_pcpu_stats *stats; |
| |
| stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats); |
| u64_stats_update_begin(&stats->syncp); |
| stats->tx_packets++; |
| stats->tx_bytes += len; |
| u64_stats_update_end(&stats->syncp); |
| } else { |
| this_cpu_inc(vlan_dev_info(dev)->vlan_pcpu_stats->tx_dropped); |
| } |
| |
| return ret; |
| } |
| |
| static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) |
| { |
| /* TODO: gotta make sure the underlying layer can handle it, |
| * maybe an IFF_VLAN_CAPABLE flag for devices? |
| */ |
| if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) |
| return -ERANGE; |
| |
| dev->mtu = new_mtu; |
| |
| return 0; |
| } |
| |
| void vlan_dev_set_ingress_priority(const struct net_device *dev, |
| u32 skb_prio, u16 vlan_prio) |
| { |
| struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| |
| if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) |
| vlan->nr_ingress_mappings--; |
| else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) |
| vlan->nr_ingress_mappings++; |
| |
| vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; |
| } |
| |
| int vlan_dev_set_egress_priority(const struct net_device *dev, |
| u32 skb_prio, u16 vlan_prio) |
| { |
| struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| struct vlan_priority_tci_mapping *mp = NULL; |
| struct vlan_priority_tci_mapping *np; |
| u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; |
| |
| /* See if a priority mapping exists.. */ |
| mp = vlan->egress_priority_map[skb_prio & 0xF]; |
| while (mp) { |
| if (mp->priority == skb_prio) { |
| if (mp->vlan_qos && !vlan_qos) |
| vlan->nr_egress_mappings--; |
| else if (!mp->vlan_qos && vlan_qos) |
| vlan->nr_egress_mappings++; |
| mp->vlan_qos = vlan_qos; |
| return 0; |
| } |
| mp = mp->next; |
| } |
| |
| /* Create a new mapping then. */ |
| mp = vlan->egress_priority_map[skb_prio & 0xF]; |
| np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); |
| if (!np) |
| return -ENOBUFS; |
| |
| np->next = mp; |
| np->priority = skb_prio; |
| np->vlan_qos = vlan_qos; |
| vlan->egress_priority_map[skb_prio & 0xF] = np; |
| if (vlan_qos) |
| vlan->nr_egress_mappings++; |
| return 0; |
| } |
| |
| /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ |
| int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) |
| { |
| struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| u32 old_flags = vlan->flags; |
| |
| if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | |
| VLAN_FLAG_LOOSE_BINDING)) |
| return -EINVAL; |
| |
| vlan->flags = (old_flags & ~mask) | (flags & mask); |
| |
| if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { |
| if (vlan->flags & VLAN_FLAG_GVRP) |
| vlan_gvrp_request_join(dev); |
| else |
| vlan_gvrp_request_leave(dev); |
| } |
| return 0; |
| } |
| |
| void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) |
| { |
| strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); |
| } |
| |
| static int vlan_dev_open(struct net_device *dev) |
| { |
| struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| struct net_device *real_dev = vlan->real_dev; |
| int err; |
| |
| if (!(real_dev->flags & IFF_UP) && |
| !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) |
| return -ENETDOWN; |
| |
| if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { |
| err = dev_uc_add(real_dev, dev->dev_addr); |
| if (err < 0) |
| goto out; |
| } |
| |
| if (dev->flags & IFF_ALLMULTI) { |
| err = dev_set_allmulti(real_dev, 1); |
| if (err < 0) |
| goto del_unicast; |
| } |
| if (dev->flags & IFF_PROMISC) { |
| err = dev_set_promiscuity(real_dev, 1); |
| if (err < 0) |
| goto clear_allmulti; |
| } |
| |
| memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); |
| |
| if (vlan->flags & VLAN_FLAG_GVRP) |
| vlan_gvrp_request_join(dev); |
| |
| if (netif_carrier_ok(real_dev)) |
| netif_carrier_on(dev); |
| return 0; |
| |
| clear_allmulti: |
| if (dev->flags & IFF_ALLMULTI) |
| dev_set_allmulti(real_dev, -1); |
| del_unicast: |
| if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
| dev_uc_del(real_dev, dev->dev_addr); |
| out: |
| netif_carrier_off(dev); |
| return err; |
| } |
| |
| static int vlan_dev_stop(struct net_device *dev) |
| { |
| struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| struct net_device *real_dev = vlan->real_dev; |
| |
| dev_mc_unsync(real_dev, dev); |
| dev_uc_unsync(real_dev, dev); |
| if (dev->flags & IFF_ALLMULTI) |
| dev_set_allmulti(real_dev, -1); |
| if (dev->flags & IFF_PROMISC) |
| dev_set_promiscuity(real_dev, -1); |
| |
| if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
| dev_uc_del(real_dev, dev->dev_addr); |
| |
| netif_carrier_off(dev); |
| return 0; |
| } |
| |
| static int vlan_dev_set_mac_address(struct net_device *dev, void *p) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| struct sockaddr *addr = p; |
| int err; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| if (!(dev->flags & IFF_UP)) |
| goto out; |
| |
| if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { |
| err = dev_uc_add(real_dev, addr->sa_data); |
| if (err < 0) |
| return err; |
| } |
| |
| if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
| dev_uc_del(real_dev, dev->dev_addr); |
| |
| out: |
| memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); |
| return 0; |
| } |
| |
| static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| struct ifreq ifrr; |
| int err = -EOPNOTSUPP; |
| |
| strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); |
| ifrr.ifr_ifru = ifr->ifr_ifru; |
| |
| switch (cmd) { |
| case SIOCGMIIPHY: |
| case SIOCGMIIREG: |
| case SIOCSMIIREG: |
| if (netif_device_present(real_dev) && ops->ndo_do_ioctl) |
| err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); |
| break; |
| } |
| |
| if (!err) |
| ifr->ifr_ifru = ifrr.ifr_ifru; |
| |
| return err; |
| } |
| |
| static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| int err = 0; |
| |
| if (netif_device_present(real_dev) && ops->ndo_neigh_setup) |
| err = ops->ndo_neigh_setup(real_dev, pa); |
| |
| return err; |
| } |
| |
| #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, |
| struct scatterlist *sgl, unsigned int sgc) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| int rc = 0; |
| |
| if (ops->ndo_fcoe_ddp_setup) |
| rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); |
| |
| return rc; |
| } |
| |
| static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| int len = 0; |
| |
| if (ops->ndo_fcoe_ddp_done) |
| len = ops->ndo_fcoe_ddp_done(real_dev, xid); |
| |
| return len; |
| } |
| |
| static int vlan_dev_fcoe_enable(struct net_device *dev) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| int rc = -EINVAL; |
| |
| if (ops->ndo_fcoe_enable) |
| rc = ops->ndo_fcoe_enable(real_dev); |
| return rc; |
| } |
| |
| static int vlan_dev_fcoe_disable(struct net_device *dev) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| int rc = -EINVAL; |
| |
| if (ops->ndo_fcoe_disable) |
| rc = ops->ndo_fcoe_disable(real_dev); |
| return rc; |
| } |
| |
| static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| int rc = -EINVAL; |
| |
| if (ops->ndo_fcoe_get_wwn) |
| rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); |
| return rc; |
| } |
| |
| static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, |
| struct scatterlist *sgl, unsigned int sgc) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| const struct net_device_ops *ops = real_dev->netdev_ops; |
| int rc = 0; |
| |
| if (ops->ndo_fcoe_ddp_target) |
| rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); |
| |
| return rc; |
| } |
| #endif |
| |
| static void vlan_dev_change_rx_flags(struct net_device *dev, int change) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| |
| if (change & IFF_ALLMULTI) |
| dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); |
| if (change & IFF_PROMISC) |
| dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); |
| } |
| |
| static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) |
| { |
| dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
| dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
| } |
| |
| /* |
| * vlan network devices have devices nesting below it, and are a special |
| * "super class" of normal network devices; split their locks off into a |
| * separate class since they always nest. |
| */ |
| static struct lock_class_key vlan_netdev_xmit_lock_key; |
| static struct lock_class_key vlan_netdev_addr_lock_key; |
| |
| static void vlan_dev_set_lockdep_one(struct net_device *dev, |
| struct netdev_queue *txq, |
| void *_subclass) |
| { |
| lockdep_set_class_and_subclass(&txq->_xmit_lock, |
| &vlan_netdev_xmit_lock_key, |
| *(int *)_subclass); |
| } |
| |
| static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) |
| { |
| lockdep_set_class_and_subclass(&dev->addr_list_lock, |
| &vlan_netdev_addr_lock_key, |
| subclass); |
| netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); |
| } |
| |
| static const struct header_ops vlan_header_ops = { |
| .create = vlan_dev_hard_header, |
| .rebuild = vlan_dev_rebuild_header, |
| .parse = eth_header_parse, |
| }; |
| |
| static const struct net_device_ops vlan_netdev_ops; |
| |
| static int vlan_dev_init(struct net_device *dev) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| int subclass = 0; |
| |
| netif_carrier_off(dev); |
| |
| /* IFF_BROADCAST|IFF_MULTICAST; ??? */ |
| dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | |
| IFF_MASTER | IFF_SLAVE); |
| dev->iflink = real_dev->ifindex; |
| dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | |
| (1<<__LINK_STATE_DORMANT))) | |
| (1<<__LINK_STATE_PRESENT); |
| |
| dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG | |
| NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | |
| NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM | |
| NETIF_F_ALL_FCOE; |
| |
| dev->features |= real_dev->vlan_features | NETIF_F_LLTX; |
| dev->gso_max_size = real_dev->gso_max_size; |
| |
| /* ipv6 shared card related stuff */ |
| dev->dev_id = real_dev->dev_id; |
| |
| if (is_zero_ether_addr(dev->dev_addr)) |
| memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); |
| if (is_zero_ether_addr(dev->broadcast)) |
| memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); |
| |
| #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; |
| #endif |
| |
| dev->needed_headroom = real_dev->needed_headroom; |
| if (real_dev->features & NETIF_F_HW_VLAN_TX) { |
| dev->header_ops = real_dev->header_ops; |
| dev->hard_header_len = real_dev->hard_header_len; |
| } else { |
| dev->header_ops = &vlan_header_ops; |
| dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; |
| } |
| |
| dev->netdev_ops = &vlan_netdev_ops; |
| |
| if (is_vlan_dev(real_dev)) |
| subclass = 1; |
| |
| vlan_dev_set_lockdep_class(dev, subclass); |
| |
| vlan_dev_info(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats); |
| if (!vlan_dev_info(dev)->vlan_pcpu_stats) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static void vlan_dev_uninit(struct net_device *dev) |
| { |
| struct vlan_priority_tci_mapping *pm; |
| struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| int i; |
| |
| free_percpu(vlan->vlan_pcpu_stats); |
| vlan->vlan_pcpu_stats = NULL; |
| for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { |
| while ((pm = vlan->egress_priority_map[i]) != NULL) { |
| vlan->egress_priority_map[i] = pm->next; |
| kfree(pm); |
| } |
| } |
| } |
| |
| static u32 vlan_dev_fix_features(struct net_device *dev, u32 features) |
| { |
| struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| u32 old_features = features; |
| |
| features &= real_dev->features; |
| features &= real_dev->vlan_features; |
| |
| features |= old_features & NETIF_F_SOFT_FEATURES; |
| |
| if (dev_ethtool_get_rx_csum(real_dev)) |
| features |= NETIF_F_RXCSUM; |
| features |= NETIF_F_LLTX; |
| |
| return features; |
| } |
| |
| static int vlan_ethtool_get_settings(struct net_device *dev, |
| struct ethtool_cmd *cmd) |
| { |
| const struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| return dev_ethtool_get_settings(vlan->real_dev, cmd); |
| } |
| |
| static void vlan_ethtool_get_drvinfo(struct net_device *dev, |
| struct ethtool_drvinfo *info) |
| { |
| strcpy(info->driver, vlan_fullname); |
| strcpy(info->version, vlan_version); |
| strcpy(info->fw_version, "N/A"); |
| } |
| |
| static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
| { |
| |
| if (vlan_dev_info(dev)->vlan_pcpu_stats) { |
| struct vlan_pcpu_stats *p; |
| u32 rx_errors = 0, tx_dropped = 0; |
| int i; |
| |
| for_each_possible_cpu(i) { |
| u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; |
| unsigned int start; |
| |
| p = per_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats, i); |
| do { |
| start = u64_stats_fetch_begin_bh(&p->syncp); |
| rxpackets = p->rx_packets; |
| rxbytes = p->rx_bytes; |
| rxmulticast = p->rx_multicast; |
| txpackets = p->tx_packets; |
| txbytes = p->tx_bytes; |
| } while (u64_stats_fetch_retry_bh(&p->syncp, start)); |
| |
| stats->rx_packets += rxpackets; |
| stats->rx_bytes += rxbytes; |
| stats->multicast += rxmulticast; |
| stats->tx_packets += txpackets; |
| stats->tx_bytes += txbytes; |
| /* rx_errors & tx_dropped are u32 */ |
| rx_errors += p->rx_errors; |
| tx_dropped += p->tx_dropped; |
| } |
| stats->rx_errors = rx_errors; |
| stats->tx_dropped = tx_dropped; |
| } |
| return stats; |
| } |
| |
| static const struct ethtool_ops vlan_ethtool_ops = { |
| .get_settings = vlan_ethtool_get_settings, |
| .get_drvinfo = vlan_ethtool_get_drvinfo, |
| .get_link = ethtool_op_get_link, |
| }; |
| |
| static const struct net_device_ops vlan_netdev_ops = { |
| .ndo_change_mtu = vlan_dev_change_mtu, |
| .ndo_init = vlan_dev_init, |
| .ndo_uninit = vlan_dev_uninit, |
| .ndo_open = vlan_dev_open, |
| .ndo_stop = vlan_dev_stop, |
| .ndo_start_xmit = vlan_dev_hard_start_xmit, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_set_mac_address = vlan_dev_set_mac_address, |
| .ndo_set_rx_mode = vlan_dev_set_rx_mode, |
| .ndo_change_rx_flags = vlan_dev_change_rx_flags, |
| .ndo_do_ioctl = vlan_dev_ioctl, |
| .ndo_neigh_setup = vlan_dev_neigh_setup, |
| .ndo_get_stats64 = vlan_dev_get_stats64, |
| #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, |
| .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, |
| .ndo_fcoe_enable = vlan_dev_fcoe_enable, |
| .ndo_fcoe_disable = vlan_dev_fcoe_disable, |
| .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, |
| .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, |
| #endif |
| .ndo_fix_features = vlan_dev_fix_features, |
| }; |
| |
| void vlan_setup(struct net_device *dev) |
| { |
| ether_setup(dev); |
| |
| dev->priv_flags |= IFF_802_1Q_VLAN; |
| dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); |
| dev->tx_queue_len = 0; |
| |
| dev->netdev_ops = &vlan_netdev_ops; |
| dev->destructor = free_netdev; |
| dev->ethtool_ops = &vlan_ethtool_ops; |
| |
| memset(dev->broadcast, 0, ETH_ALEN); |
| } |