macvlan.c revision d93515611bbc70c2fe4db232e5feb448ed8e4cc9
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> 29b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_link.h> 30b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_macvlan.h> 31b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <net/rtnetlink.h> 32618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann#include <net/xfrm.h> 33b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 34b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) 35b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 36b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_port { 37b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 38b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; 39b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head vlans; 408b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct rcu_head rcu; 41eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala bool passthru; 42d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman int count; 43b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 44b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 45d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biedermanstatic void macvlan_port_destroy(struct net_device *dev); 46d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 47a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get_rcu(dev) \ 48a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko ((struct macvlan_port *) rcu_dereference(dev->rx_handler_data)) 49a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get(dev) ((struct macvlan_port *) dev->rx_handler_data) 50a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 51a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 52b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 53b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 54b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 55b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 56b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 57b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 58b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[addr[5]], hlist) { 59ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(vlan->dev->dev_addr, addr)) 60b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 61b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 63b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 64b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 65f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 66f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 67f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 68f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 69f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 70f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 71f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 72f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 73449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 74f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 76449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 77449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 78f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 83449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 98ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(port->dev->dev_addr, addr)) 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 106f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 107a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 108fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 109fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 110618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 111a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 112fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 113a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 114a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 115a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 116618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 117fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 118618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 119a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 120a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!compare_ether_addr_64bits(eth->h_dest, 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann dev->broadcast)) 122a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 123a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 124a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 125a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 126fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->receive(skb); 127a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 128a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 129b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 130618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 131618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 132618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 133b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 134b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 135b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 136b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 137b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 138b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 139a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 140b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 141efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 142efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 143efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 144b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 145b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 146618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 147618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 148618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 149b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 150fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_broadcast_one(nskb, vlan, eth, 151618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann mode == MACVLAN_MODE_BRIDGE); 152a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 153a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 1598a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirkostatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 161ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 1628a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko struct sk_buff *skb = *pskb; 163b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 165618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 167ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 168ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 169b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 170a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 171b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 172618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 173618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 174618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 175618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 176618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 177618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 178eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 179618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 180618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 181618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 182618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 183618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 184618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 185618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 186618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 187618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 188618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 189618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 190618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 191618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 1928a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 194b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 195eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 196eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = list_first_entry(&port->vlans, struct macvlan_dev, list); 197eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 198eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 199b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 2008a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 201b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 202b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 203b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 204b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 2058a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 206b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 207a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 208b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 209a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 210ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 211b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 212b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 215ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 216ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 217ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 218ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 2198a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 220b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 221b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 222618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 223618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 224618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 225618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 226618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 22712a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano __u8 ip_summed = skb->ip_summed; 228618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 229618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 230618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 23112a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = CHECKSUM_UNNECESSARY; 232618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 233618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 234618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 235618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 236618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 237618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 238618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 239618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 240618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 241618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann unsigned int length = skb->len + ETH_HLEN; 242fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int ret = dest->forward(dest->dev, skb); 243618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_count_rx(dest, length, 244618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret == NET_RX_SUCCESS, 0); 245618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 246618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 247618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 248618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 249618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 250618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 25112a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = ip_summed; 2528a83a00b0735190384a348156837918271034144Arnd Bergmann skb_set_dev(skb, vlan->lowerdev); 253618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 254618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 255618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 256fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 257fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 258b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 259b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 260b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 2618ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet const struct macvlan_dev *vlan = netdev_priv(dev); 262b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 263618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret = macvlan_queue_xmit(skb, dev); 2642d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 2658ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *pcpu_stats; 2662c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 2678ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 2688ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 2698ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 2708ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 2718ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 2728ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 2738ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 2748ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 275cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 276b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 277fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 278b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 279b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2803b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2813b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 282b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 283b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 284b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 285b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2860c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2870c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 288b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 289b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2903b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 2913b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 2923b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 2933b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 2943b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 2953b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 2963b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 2973b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 298b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 299b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 300b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 301b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 302b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 303b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 304eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 305eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, 1); 306eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 307eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 308eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 309f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 310f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 311f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 312f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 313a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 314b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 315b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 316b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 317b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 318b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 319b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 320b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 321eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 322eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 323f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 324b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 325b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 326b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 327a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 328b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 329b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 330b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 331b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 332b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 333b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 334b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 335b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 336b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 337eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 338eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, -1); 339eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 340eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 341eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 342b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 343b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 344b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 345b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 346a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 347b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 348eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 349449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 350b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 351b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 352b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 353ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 354ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 355ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 356ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 357ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 358ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 359ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 360ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 361ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 362ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 363f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 364f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 365f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 366f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 367f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 368f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 369f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 370ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 371a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 372ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 373f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 374ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 375a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 376f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 377f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 378f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 379ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 380ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 381ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 382b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 383b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 384b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 385b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 386b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 387b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 388b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 389b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 390b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 391b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 392b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 393b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 394b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 395b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 396b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 397b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 398b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 399b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 403b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 404b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 405b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 407b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 408b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 409b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 410b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 411b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 413b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 414cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 415b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 416b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 417b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 418b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 419391876466670988196786150fc9d9da2f3c7cecbMichał Mirosław NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM) 420b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 421b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 422b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 423b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 424e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 425e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 426e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 427c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 428c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 429c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 430c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 431c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 432c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 433c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 434cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 435cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 436e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 437c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 438c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 439b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 440b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 441b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 442b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 443b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 444b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 445b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 446b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 4478ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet dev->features |= NETIF_F_LLTX; 4488c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 449b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 450ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 451b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 452c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 453c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 4548ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet vlan->pcpu_stats = alloc_percpu(struct macvlan_pcpu_stats); 4558ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 456fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 457fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 459b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 460b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 461fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 462fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 463fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 464d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 465fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4668ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 467d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 468d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 469d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 470d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 471fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 472fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 47328172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 47428172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 475fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 476fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 477fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4788ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 4798ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *p; 4808ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 4818ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 482bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 483fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 484fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 485fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 4868ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 487bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 488bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 489bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 490bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 491bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 4928ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 4938ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 494bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 4958ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 4968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 4978ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 4988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 4998ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 5008ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 5018ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 5028ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 5038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 5048ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 5058ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 506fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 5078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 5088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 5098ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 510fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 511fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 512fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 513fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 514b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 515b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 516b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 517b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 518b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 519b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 520b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5219edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 5229edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 5239edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 5249edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 525b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_settings(vlan->lowerdev, cmd); 5269edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 5279edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 528b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 529b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 5309edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 531b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 532b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 533b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 53454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 53554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 536fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 53754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 53854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 539008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 54054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 54154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 54254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 54354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_multicast_list = macvlan_set_multicast_list, 544bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 54554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 54654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 54754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 5488a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 550b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 551b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 55293f154b594fe47e4a7e5358b309add449a046cd3Eric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 55354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 554b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 5553b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 556b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 5578a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 5588a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 5598a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 5608a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 5618a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 5628a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 565b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 566b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 567b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 568b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 569b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 570ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 571b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 572b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 573b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 574b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 575b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 576b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 577b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 578b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 579eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 580b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 581b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 582b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 583b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 584ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 585a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 586a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 587ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 588d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 589d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 590ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 591b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 592b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5938b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirkostatic void macvlan_port_rcu_free(struct rcu_head *head) 5948b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko{ 5958b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct macvlan_port *port; 5968b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko 5978b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko port = container_of(head, struct macvlan_port, rcu); 5988b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko kfree(port); 5998b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko} 6008b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 603a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko struct macvlan_port *port = macvlan_port_get(dev); 604b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 605a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 606ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 6078b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko call_rcu(&port->rcu, macvlan_port_rcu_free); 608b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 613b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 614b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 61827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 61927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 62027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 62127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 62227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 62327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 624eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 62527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 62627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 62727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 62827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 62927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 632b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 633fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 634fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 635fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 636fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 637fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 644b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 645b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 646b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 64781adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 648b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 649b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 650b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 651b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 652b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 653a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 654b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 655b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 656b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 657b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 658a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 659b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 660b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 661b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 662b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 663b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 664b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 665b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy random_ether_addr(dev->dev_addr); 666b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 667a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 668b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 670b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 671b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 672a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(lowerdev); 673b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 674eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 675eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 676eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 677eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 679b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 680b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 681fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 682fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 683b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 68427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 68527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 68627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 68727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 688eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 689d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (port->count) 690eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 691eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 692eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); 693eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 694eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 695d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count += 1; 696b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 697b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 698f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko goto destroy_port; 699b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 700b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 701fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 702f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 703b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 704f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 705f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 706d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 707d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 708f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 709f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 710f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 711b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 712fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 713b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 714fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 715fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 716fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 717fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 718fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 719fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 720fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 721fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 722fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 723b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 724b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 725b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 726b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 72723289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 728b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 729fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 730b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 73127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 73227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 73327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 73427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 73527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 73627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 73727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 73827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 73927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 74027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 74127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 74227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return nla_total_size(4); 74327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 74427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 74527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 74627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 74727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 74827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 74927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 75027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann NLA_PUT_U32(skb, IFLA_MACVLAN_MODE, vlan->mode); 75127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 75227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 75327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 75427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 75527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 75627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 75727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 75827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 75927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 76027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 761fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 762fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 763fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 764fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 765fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 766fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 767fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 768fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 769fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 770fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 771fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 772fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 773fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 774fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 775fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 776fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 777b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 7788a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 779b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 780b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 781b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 782b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 783b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 784b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 785b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 786b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 787b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 788b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 789226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 790b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 791a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 792b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 793b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 794a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(dev); 795a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 796b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 797b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 798b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 799fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 800fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 801b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 802b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 803b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 804b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 8058c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 806b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 807b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 808b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 809b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 8103b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 8113b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 8123b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 8133b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 814b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 815226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 816226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 817226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 818b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 8191c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 8201c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 8211c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 822b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 823b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 824b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 825b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 826b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 828b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 829b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 830b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 831b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 832b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 833b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 834b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 835b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 836fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 837b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 838b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 839b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 840b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 841b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 842b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 843b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 844b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 845b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 846b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 847b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 848b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 849b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 850b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 851b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 852b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 853b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 854b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 855b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 856b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 857b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 858