macvlan.c revision 226bd3411471af42f7edbdfaf73f2d54ebb62a66
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 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_del(struct macvlan_dev *vlan) 74f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman synchronize_rcu(); 77f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 78f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 97ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(port->dev->dev_addr, addr)) 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 106a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 107fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 108fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 109618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 110a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 111fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 112a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 113a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 114a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 115618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 116fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 117618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 118a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 119a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!compare_ether_addr_64bits(eth->h_dest, 120a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann dev->broadcast)) 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 122a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 123a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 124a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 125fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->receive(skb); 126a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 127a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 128b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 129618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 130618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 131618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 132b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 133b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 134b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 135b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 136b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 137b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 138a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 139b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 140efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 141efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 142efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 143b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 144b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 145618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 146618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 147618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 148b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 149fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_broadcast_one(nskb, vlan, eth, 150618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann mode == MACVLAN_MODE_BRIDGE); 151a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 152a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 1588a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirkostatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 160ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 1618a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko struct sk_buff *skb = *pskb; 162b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 163b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 164618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 166ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 167ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 168b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 169a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 171618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 172618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 173618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 174618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 175618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 176618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 177eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 178618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 179618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 180618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 181618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 182618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 183618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 184618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 185618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 186618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 187618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 188618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 189618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 190618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 1918a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 192b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 194eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 195eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = list_first_entry(&port->vlans, struct macvlan_dev, list); 196eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 197eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 198b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 1998a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 200b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 201b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 202b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 203b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 2048a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 205b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 206a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 207b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 208a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 209ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 210b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 211b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 212b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 214ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 215ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 216ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 217ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 2188a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 219b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 220b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 221618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 222618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 223618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 224618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 225618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 22612a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano __u8 ip_summed = skb->ip_summed; 227618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 228618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 229618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 23012a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = CHECKSUM_UNNECESSARY; 231618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 232618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 233618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 234618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 235618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 236618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 237618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 238618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 239618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 240618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann unsigned int length = skb->len + ETH_HLEN; 241fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int ret = dest->forward(dest->dev, skb); 242618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_count_rx(dest, length, 243618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret == NET_RX_SUCCESS, 0); 244618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 245618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 246618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 247618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 248618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 249618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 25012a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = ip_summed; 2518a83a00b0735190384a348156837918271034144Arnd Bergmann skb_set_dev(skb, vlan->lowerdev); 252618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 253618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 254618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 255fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 256fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 257b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 258b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 259b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 2608ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet const struct macvlan_dev *vlan = netdev_priv(dev); 261b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 262618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret = macvlan_queue_xmit(skb, dev); 2632d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 2648ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *pcpu_stats; 2652c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 2668ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 2678ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 2688ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 2698ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 2708ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 2718ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 2728ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 2738ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 274cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 275b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 276fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 277b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 278b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2793b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2803b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 281b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 282b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 283b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 284b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2850c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2860c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 287b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 288b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2893b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 2903b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 2913b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 2923b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 2933b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 2943b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 2953b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 2963b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 297b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 298b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 299b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 300b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 301b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 302b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 303eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 304eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, 1); 305eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 306eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 307eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 308f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 309f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 310f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 311f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 312a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 313b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 314b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 315b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 316b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 317b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 318b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 319b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 320eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 321eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 322f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 324b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 325b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 326a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 327b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 328b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 329b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 330b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 331b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 332b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 333b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 334b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 335b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 336eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 337eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, -1); 338eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 339eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 340eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 341b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 342b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 343b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 344b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 345a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 346b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 347eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 348f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 349b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 350b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 351b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 352ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 353ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 354ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 355ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 356ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 357ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 358ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 359ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 360ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 361ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 362f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 363f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 364f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 365f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 366f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 367f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 368f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 369ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 370a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 371ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 372f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 373ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 374a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 375f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 376f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 377f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 378ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 379ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 380ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 381b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 382b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 383b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 384b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 385b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 386b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 387b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 388b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 389b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 390b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 391b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 392b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 393b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 394b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 395b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 396b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 397b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 398b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 399b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 403b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 404b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 405b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 407b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 408b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 409b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 410b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 411b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 413cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 414b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 415b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 416b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 417b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 418391876466670988196786150fc9d9da2f3c7cecbMichał Mirosław NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM) 419b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 420b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 421b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 422b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 423e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 424e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 425e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 426c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 427c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 428c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 429c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 430c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 431c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 432c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 433cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 434cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 435e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 436c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 437c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 438b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 439b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 440b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 441b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 442b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 443b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 444b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 445b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 4468ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet dev->features |= NETIF_F_LLTX; 4478c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 448b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 449ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 450b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 451c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 452c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 4538ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet vlan->pcpu_stats = alloc_percpu(struct macvlan_pcpu_stats); 4548ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 455fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 456fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 457b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 459b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 460fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 461fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 462fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 463d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 464fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4658ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 466d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 467d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 468d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 469d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 470fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 471fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 47228172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 47328172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 474fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 475fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 476fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4778ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 4788ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *p; 4798ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 4808ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 481bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 482fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 483fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 484fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 4858ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 486bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 487bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 488bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 489bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 490bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 4918ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 4928ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 493bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 4948ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 4958ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 4968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 4978ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 4988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 4998ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 5008ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 5018ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 5028ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 5038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 5048ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 505fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 5068ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 5078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 5088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 509fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 510fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 511fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 512fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 513b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 514b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 515b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 516b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 517b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 518b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 519b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5209edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 5219edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 5229edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 5239edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 524b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_settings(vlan->lowerdev, cmd); 5259edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 5269edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 527b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 528b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 5299edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 530b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 531b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 532b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 53354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 53454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 535fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 53654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 53754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 538008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 53954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 54054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 54154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 54254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_multicast_list = macvlan_set_multicast_list, 543bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 54454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 54554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 54654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 5478a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 548b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 550b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 55193f154b594fe47e4a7e5358b309add449a046cd3Eric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 55254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 553b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 5543b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 555b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 5568a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 5578a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 5588a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 5598a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 5608a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 5618a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 562b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 565b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 566b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 567b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 568b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 569ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 570b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 571b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 572b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 573b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 574b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 575b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 576b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 577b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 578eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 579b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 580b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 581b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 582b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 583ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 584a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 585a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 586ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 587ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 588a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags |= IFF_MACVLAN_PORT; 589ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 590b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 591b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5928b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirkostatic void macvlan_port_rcu_free(struct rcu_head *head) 5938b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko{ 5948b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct macvlan_port *port; 5958b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko 5968b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko port = container_of(head, struct macvlan_port, rcu); 5978b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko kfree(port); 5988b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko} 5998b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 602a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko struct macvlan_port *port = macvlan_port_get(dev); 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 604a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 605ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 6068b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko call_rcu(&port->rcu, macvlan_port_rcu_free); 607b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 608b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 613b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 614b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 61727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 61827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 61927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 62027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 62127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 62227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 623eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 62427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 62527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 62627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 62727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 62827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 629b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 632fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 633fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 634fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 635fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 636fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 637b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 644b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 645b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 64681adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 647b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 648b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 649b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 650b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 651b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 652a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 653b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 654b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 655b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 656b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 657a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 658b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 659b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 660b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 661b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 662b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 663b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 664b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy random_ether_addr(dev->dev_addr); 665b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 666a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 667b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 668b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 670b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 671a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(lowerdev); 672b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 673eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 674eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 675eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 676eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 677b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 679b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 680fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 681fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 682b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 68327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 68427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 68527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 68627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 687eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 688d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (port->count) 689eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 690eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 691eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); 692eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 693eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 694d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count += 1; 695b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 696b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 697f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko goto destroy_port; 698b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 699b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 700fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 701f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 702b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 703f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 704f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 705d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 706d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 707f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 708f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 709f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 710b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 711fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 712b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 713fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 714fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 715fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 716fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 717fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 718fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 719fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 720fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 721fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 722b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 723b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 724b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 725b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 72623289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 727b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 728fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 729b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 73027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 73127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 73227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 73327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 73427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 73527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 73627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 73727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 73827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 73927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 74027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 74127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return nla_total_size(4); 74227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 74327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 74427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 74527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 74627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 74727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 74827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 74927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann NLA_PUT_U32(skb, IFLA_MACVLAN_MODE, vlan->mode); 75027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 75127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 75227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 75327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 75427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 75527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 75627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 75727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 75827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 75927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 760fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 761fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 762fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 763fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 764fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 765fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 766fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 767fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 768fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 769fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 770fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 771fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 772fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 773fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 774fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 775fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 776b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 7778a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 778b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 779b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 780b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 781b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 782b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 783b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 784b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 785b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 786b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 787b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 788226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 789b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 790a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 791b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 792b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 793a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(dev); 794a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 795b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 796b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 797b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 798fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 799fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 800b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 801b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 802b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 803b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 8048c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 805b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 806b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 807b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 808b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 8093b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 8103b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 8113b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 8123b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 813b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 814226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 815226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 816226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 817b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 8181c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 8191c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 8201c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 821b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 822b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 823b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 824b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 825b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 826b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 828b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 829b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 830b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 831b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 832b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 833b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 834b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 835fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 836b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 837b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 838b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 839b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 840b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 841b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 842b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 843b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 844b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 845b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 846b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 847b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 848b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 849b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 850b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 851b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 852b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 853b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 854b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 855b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 856b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 857