macvlan.c revision 59b9997baba5242997ddc7bd96b1391f5275a5a4
1b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 2b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * Copyright (c) 2007 Patrick McHardy <kaber@trash.net> 3b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * 4b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * This program is free software; you can redistribute it and/or 5b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * modify it under the terms of the GNU General Public License as 6b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * published by the Free Software Foundation; either version 2 of 7b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * the License, or (at your option) any later version. 8b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * 9b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * The code this is based on carried the following copyright notice: 10b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * --- 11b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * (C) Copyright 2001-2006 12b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * Alex Zeffertt, Cambridge Broadband Ltd, ajz@cambridgebroadband.com 13b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * Re-worked by Ben Greear <greearb@candelatech.com> 14b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * --- 15b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 16b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/kernel.h> 17b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/types.h> 18b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/module.h> 19b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/init.h> 20b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/errno.h> 21b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/slab.h> 22b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/string.h> 2382524746c27fa418c250a56dd7606b9d3fc79826Franck Bui-Huu#include <linux/rculist.h> 24b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/notifier.h> 25b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/netdevice.h> 26b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/etherdevice.h> 27b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/ethtool.h> 28b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_arp.h> 2987002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko#include <linux/if_vlan.h> 30b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_link.h> 31b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_macvlan.h> 32b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <net/rtnetlink.h> 33618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann#include <net/xfrm.h> 34b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 35b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) 36b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 37b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_port { 38b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 39b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; 40b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head vlans; 418b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct rcu_head rcu; 42eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala bool passthru; 43d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman int count; 44b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 45b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 46d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biedermanstatic void macvlan_port_destroy(struct net_device *dev); 47d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 48a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get_rcu(dev) \ 49a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko ((struct macvlan_port *) rcu_dereference(dev->rx_handler_data)) 50a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get(dev) ((struct macvlan_port *) dev->rx_handler_data) 51a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 52a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 53b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 54b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 55b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 56b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 57b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 58b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 59b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[addr[5]], hlist) { 60ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(vlan->dev->dev_addr, addr)) 61b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 63b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 64b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 65b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 66f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 67f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 68f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 69f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 70f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 71f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 72f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 74449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 77449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 78449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 84449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 99ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(port->dev->dev_addr, addr)) 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 106f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 108a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 109fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 110fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 111618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 112a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 113fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 114a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 115a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 116a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 117618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 118fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 119618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 120a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!compare_ether_addr_64bits(eth->h_dest, 122a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann dev->broadcast)) 123a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 124a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 125a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 126a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 127fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->receive(skb); 128a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 129a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 130b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 131618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 132618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 133618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 134b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 135b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 136b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 137b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 138b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 139b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 140a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 141b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 142efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 143efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 144efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 145b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 146b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 147618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 148618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 149618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 150b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 151fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_broadcast_one(nskb, vlan, eth, 152618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann mode == MACVLAN_MODE_BRIDGE); 153a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 154a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 1608a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirkostatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 161b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 162ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 1638a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko struct sk_buff *skb = *pskb; 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 166618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 168ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 169ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 171a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 172b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 173bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet skb = ip_check_defrag(skb, IP_DEFRAG_MACVLAN); 174bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet if (!skb) 175bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet return RX_HANDLER_CONSUMED; 1764ec7ac1203bcf21f5e3d977c9818b1a56c9ef40dEric Dumazet eth = eth_hdr(skb); 177618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 178618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 179618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 180618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 181618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 182618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 183eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 184618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 185618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 186618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 187618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 188618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 189618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 190618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 191618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 192618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 193618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 194618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 195618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 196618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 197729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger else { 198729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger /* forward to original port. */ 199729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger vlan = src; 200729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger ret = macvlan_broadcast_one(skb, vlan, eth, 0); 201729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger goto out; 202729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger } 203729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger 2048a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 205b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 206b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 207eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 208eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = list_first_entry(&port->vlans, struct macvlan_dev, list); 209eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 210eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 211b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 2128a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 215b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 216b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 2178a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 218b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 219a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 220b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 221a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 222ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 223b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 224b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 225b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 226b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 227ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 228ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 229ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 230ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 2318a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 232b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 233b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 234618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 235618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 236618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 237618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 238618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 23912a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano __u8 ip_summed = skb->ip_summed; 240618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 241618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 242618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 24312a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = CHECKSUM_UNNECESSARY; 244618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 245618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 246618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 247618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 248618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 249618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 250618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 251618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 252618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 253a37dd3332319260cce81ac91ce25fcc3a31de997David Ward /* send to lowerdev first for its network taps */ 254cb2d0f3e968bff7c6d262aca3e3ab8d4184e69b2David Ward dev_forward_skb(vlan->lowerdev, skb); 255618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 256618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 257618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 258618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 259618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 260618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 26112a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = ip_summed; 26259b9997baba5242997ddc7bd96b1391f5275a5a4David S. Miller skb->dev = vlan->lowerdev; 263618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 264618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 265618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 266fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 267fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 268b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 269b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 270b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 2718ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet const struct macvlan_dev *vlan = netdev_priv(dev); 272b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 273618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret = macvlan_queue_xmit(skb, dev); 2742d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 2758ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *pcpu_stats; 2762c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 2778ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 2788ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 2798ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 2808ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 2818ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 2828ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 2838ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 2848ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 285cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 286b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 287fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 288b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 289b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2903b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2913b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 292b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 293b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 294b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 295b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2960c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2970c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 298b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 299b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3003b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 3013b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 3023b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 3033b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 3043b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 3053b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 3063b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 3073b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 308b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 309b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 310b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 311b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 312b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 313b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 314eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 315eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, 1); 316eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 317eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 318eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 319f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 320f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 321f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 322f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 323a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 324b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 325b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 326b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 327b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 328b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 329b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 330b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 331eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 332eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 333f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 334b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 335b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 336b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 337a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 338b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 339b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 340b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 341b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 342b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 343b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 344b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 345b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 346b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 347eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 348eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, -1); 349eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 350eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 351eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 352b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 353b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 354b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 355b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 356a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 357b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 358eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 359449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 360b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 361b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 362b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 363ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 364ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 365ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 366ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 367ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 368ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 369ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 370ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 371ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 372ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 373f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 374f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 3757ce5d222190cb3ce3ae88bafde7c4fa52a5103e0Danny Kukawka dev->addr_assign_type &= ~NET_ADDR_RANDOM; 376f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 377f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 378f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 379f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 380f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 381ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 382a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 383ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 384f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 385ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 386a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 387f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 388f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 389f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 390ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 391ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 392ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 393b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 394b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 395b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 396b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 397b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 398b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 399b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 403b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 404b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 405b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 407b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 408b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 409b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 410b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 411b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 413b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 414b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 415b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 416b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 417b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 418b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 419b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 420b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 421b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 422b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 423b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 424b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 425cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 426b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 428b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 429b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 4308d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ 4318d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_HW_VLAN_FILTER) 432b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 433b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 434b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 435b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 436e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 437e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 438e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 439c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 440c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 441c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 442c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 443c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 444c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 445c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 446cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 447cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 448e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 449c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 450c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 451b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 452b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 453b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 454b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 455b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 456b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 457b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 4598ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet dev->features |= NETIF_F_LLTX; 4608c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 461b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 462ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 463b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 464c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 465c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 4668ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet vlan->pcpu_stats = alloc_percpu(struct macvlan_pcpu_stats); 4678ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 468fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 469fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 470b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 471b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 472b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 473fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 474fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 475fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 476d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 477fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4788ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 479d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 480d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 481d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 482d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 483fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 484fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 48528172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 48628172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 487fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 488fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 489fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4908ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 4918ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *p; 4928ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 4938ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 494bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 495fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 496fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 497fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 4988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 499bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 500bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 501bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 502bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 503bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 5048ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 5058ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 506bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 5078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 5088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 5098ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 5108ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 5118ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 5128ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 5138ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 5148ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 5158ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 5168ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 5178ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 518fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 5198ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 5208ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 5218ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 522fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 523fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 524fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 525fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5268e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_add_vid(struct net_device *dev, 5278d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend unsigned short vid) 5288d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5298d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5308d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5318d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 53287002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko return vlan_vid_add(lowerdev, vid); 5338d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5348d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 5358e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_kill_vid(struct net_device *dev, 5368d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend unsigned short vid) 5378d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5388d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5398d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5408d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 54187002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko vlan_vid_del(lowerdev, vid); 5428e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirko return 0; 5438d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5448d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 545b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 546b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 547b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 548b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 550b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 551b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5529edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 5539edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 5549edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 5559edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 5564bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko 5574bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko return __ethtool_get_settings(vlan->lowerdev, cmd); 5589edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 5599edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 560b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 561b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 5629edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 565b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 56654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 56754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 568fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 56954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 57054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 571008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 57254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 57354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 57454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 575afc4b13df143122f99a0eb10bfefb216c2806de0Jiri Pirko .ndo_set_rx_mode = macvlan_set_multicast_list, 576bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 57754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 5788d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, 5798d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, 58054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 58154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 5828a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 583b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 584b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 585b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 586550fd08c2cebad61c548def135f67aba284c6162Neil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 58754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 5893b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 590b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 5918a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 5928a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 5938a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 5948a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 5958a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 5968a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 597b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 598b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 599b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 604ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 605b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 606b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 607b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 608b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 613eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 614b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 618ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 619a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 620a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 621ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 622d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 623d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 624ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 625b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 626b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 627b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 628b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 629a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko struct macvlan_port *port = macvlan_port_get(dev); 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 631a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 632ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 6336e070aecd9e304264a6b8655f49aa7e6db0e55f2Lai Jiangshan kfree_rcu(port, rcu); 634b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 635b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 636b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 637b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 64427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 64527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 64627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 64727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 64827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 64927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 650eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 65127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 65227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 65327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 65427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 65527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 656b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 657b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 658b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 659fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 660fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 661fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 662fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 663fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 664b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 665b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 666b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 667b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 668b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 670b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 671b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 672b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 67381adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 674b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 675b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 676b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 677b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 678b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 679a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 680b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 681b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 682b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 683b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 684a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 685b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 686b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 687b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 688b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 689b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 690b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 6917ce5d222190cb3ce3ae88bafde7c4fa52a5103e0Danny Kukawka eth_hw_addr_random(dev); 692b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 693a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 694b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 695b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 696b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 697b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 698a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(lowerdev); 699b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 700eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 701eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 702eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 703eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 704b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 705b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 706b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 707fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 708fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 709b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 71027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 71127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 71227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 71327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 714eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 715d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (port->count) 716eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 717eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 718eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); 719eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 720eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 721d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count += 1; 722b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 723b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 724f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko goto destroy_port; 725b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 726b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 727fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 728f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 729b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 730f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 731f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 732d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 733d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 734f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 735f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 736f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 737b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 738fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 739b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 740fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 741fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 742fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 743fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 744fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 745fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 746fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 747fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 748fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 749b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 750b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 751b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 752b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 75323289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 754b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 755fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 756b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 75727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 75827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 75927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 76027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 76127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 76227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 76327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 76427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 76527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 76627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 76727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 76827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return nla_total_size(4); 76927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 77027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 77127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 77227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 77327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 77427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 77527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 77627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann NLA_PUT_U32(skb, IFLA_MACVLAN_MODE, vlan->mode); 77727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 77827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 77927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 78027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 78127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 78227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 78327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 78427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 78527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 78627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 787fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 788fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 789fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 790fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 791fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 792fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 793fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 794fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 795fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 796fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 797fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 798fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 799fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 800fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 801fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 802fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 803b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 8048a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 805b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 806b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 807b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 808b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 809b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 810b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 811b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 812b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 813b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 814b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 815226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 816b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 817a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 818b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 819b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 820a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(dev); 821a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 822b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 823b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 824b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 825fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 826fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 828b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 829b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 830b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 8318c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 832b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 833b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 834b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 835b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 8363b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 8373b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 8383b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 8393b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 840b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 841226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 842226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 843226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 844b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 8451c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 8461c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 8471c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 848b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 849b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 850b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 851b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 852b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 853b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 854b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 855b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 856b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 857b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 858b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 859b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 860b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 861b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 862fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 863b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 864b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 865b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 866b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 867b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 868b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 869b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 870b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 871b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 872b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 873b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 874b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 875b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 876b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 877b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 878b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 879b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 880b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 881b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 882b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 883b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 884