macvlan.c revision 3b27e105550f7c4a79ecb6d6a9c49c651c59ae9b
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; 41b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 42b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 43a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get_rcu(dev) \ 44a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko ((struct macvlan_port *) rcu_dereference(dev->rx_handler_data)) 45a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get(dev) ((struct macvlan_port *) dev->rx_handler_data) 46a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 47a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 48b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 49b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 50b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 51b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 52b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 53b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 54b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[addr[5]], hlist) { 55ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(vlan->dev->dev_addr, addr)) 56b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 57b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 58b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 59b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 60b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 61f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 62f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 63f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 64f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 65f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 66f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 67f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 68f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 69f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_del(struct macvlan_dev *vlan) 70f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 71f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 72f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman synchronize_rcu(); 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 74f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 77f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 78f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 93ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(port->dev->dev_addr, addr)) 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 102a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 103fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 104fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 105618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 106a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 107fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 108a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 109a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 110a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 111618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 112fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 113618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 114a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 115a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!compare_ether_addr_64bits(eth->h_dest, 116a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann dev->broadcast)) 117a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 118a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 119a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 120a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 121fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->receive(skb); 122a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 123a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 124b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 125618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 126618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 127618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 128b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 129b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 130b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 131b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 132b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 133b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 134a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 135b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 136efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 137efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 138efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 139b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 140b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 141618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 142618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 143618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 144b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 145fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_broadcast_one(nskb, vlan, eth, 146618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann mode == MACVLAN_MODE_BRIDGE); 147a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 148a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 149b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 150b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 151b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 152b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 154ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirkostatic struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 156ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 159618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 161ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 162ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 163b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 164a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 166618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 167618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 168618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 169618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 170618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 171618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 172618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 173618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 174618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 175618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 176618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 177618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 178618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 179618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 180618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 181618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 182618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 183618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 184618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 186b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 187b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 188b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan = macvlan_hash_lookup(port, eth->h_dest); 189b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 190b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 191b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 192b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 194b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 195b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 196b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 197a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 198b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 199a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 200ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 201b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 202b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 203b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 204b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 205ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 206ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 207ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 208ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 209b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 210b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 211b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 212618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 213618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 214618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 215618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 216618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 217618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 218618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 219618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 220618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 221618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 222618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 223618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 224618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 225618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 226618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 227618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 228618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 229618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann unsigned int length = skb->len + ETH_HLEN; 230fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int ret = dest->forward(dest->dev, skb); 231618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_count_rx(dest, length, 232618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret == NET_RX_SUCCESS, 0); 233618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 234618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 235618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 236618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 237618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 238618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 2398a83a00b0735190384a348156837918271034144Arnd Bergmann skb_set_dev(skb, vlan->lowerdev); 240618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 241618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 242618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 243fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 244fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 245b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 2462c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet int i = skb_get_queue_mapping(skb); 2472c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 248b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 249b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 250b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 251618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret = macvlan_queue_xmit(skb, dev); 2522d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 2532c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_packets++; 2542c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_bytes += len; 2552c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet } else 2562c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_dropped++; 2572c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 258cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 259b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 260fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 261b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 262b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2633b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2643b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 265b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 266b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 267b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 268b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2690c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2700c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 271b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 272b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2733b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 2743b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 2753b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 2763b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 2773b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 2783b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 2793b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 2803b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 281b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 282b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 283b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 284b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 285b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 286b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 287f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 288f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 289f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 290f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 291a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 292b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 293b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 294b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 295b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 296b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 297b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 298b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 299f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 300b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 301b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 302b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 303a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 304b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 305b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 306b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 307b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 308b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 309b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 310b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 311b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 312b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 313b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 314b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 315b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 316b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 317a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 318b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 319f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 320b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 321b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 322b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 323ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 324ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 325ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 326ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 327ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 328ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 329ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 330ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 331ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 332ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 333f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 334f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 335f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 336f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 337f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 338f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 339f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 340ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 341a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 342ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 343f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 344ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 345a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 346f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 347f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 348f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 349ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 350ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 351ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 352b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 353b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 354b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 355b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 356b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 357b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 358b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 359b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 360b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 361b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 362b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 363b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 364b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 365b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 366b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 367b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 368b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 369b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 370b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 371b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 372b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 373b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 374b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 375b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 376b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 377b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 378b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 379b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 380b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 381b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 382b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 383b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 384cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 385b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 386b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 387b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 388b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 3896eb3a8553345ba2b4efd5390709e158289b9ece4Patrick Mullaney NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO) 390b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 391b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 392b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 393b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 394e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 395e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 396e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 397c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 398c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 399c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 400c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 401c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 402c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 403c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 404cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 405cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 406e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 407c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 408c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 409b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 410b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 411b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 413b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 414b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 415b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 416b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 4178c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 418b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 419ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 420b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 421c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 422c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 423fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet vlan->rx_stats = alloc_percpu(struct macvlan_rx_stats); 424fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet if (!vlan->rx_stats) 425fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 426fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 428b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 429b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 430fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 431fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 432fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 433fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 434fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet free_percpu(vlan->rx_stats); 435fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 436fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 43728172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 43828172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 439fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 440fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 441fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4423cfde79c6c7c8002375c4a8e5be7f602fbb9675dBen Hutchings dev_txq_stats_fold(dev, stats); 443fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 444fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet if (vlan->rx_stats) { 445bc66154efe163a80f269d448572f7906756e9338Eric Dumazet struct macvlan_rx_stats *p, accum = {0}; 446bc66154efe163a80f269d448572f7906756e9338Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast; 447bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 448fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 449fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 450fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 451fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet p = per_cpu_ptr(vlan->rx_stats, i); 452bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 453bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 454bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 455bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 456bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 457bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 458bc66154efe163a80f269d448572f7906756e9338Eric Dumazet accum.rx_packets += rx_packets; 459bc66154efe163a80f269d448572f7906756e9338Eric Dumazet accum.rx_bytes += rx_bytes; 460bc66154efe163a80f269d448572f7906756e9338Eric Dumazet accum.rx_multicast += rx_multicast; 461bc66154efe163a80f269d448572f7906756e9338Eric Dumazet /* rx_errors is an ulong, updated without syncp protection */ 462bc66154efe163a80f269d448572f7906756e9338Eric Dumazet accum.rx_errors += p->rx_errors; 463fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 464bc66154efe163a80f269d448572f7906756e9338Eric Dumazet stats->rx_packets = accum.rx_packets; 465bc66154efe163a80f269d448572f7906756e9338Eric Dumazet stats->rx_bytes = accum.rx_bytes; 466bc66154efe163a80f269d448572f7906756e9338Eric Dumazet stats->rx_errors = accum.rx_errors; 467bc66154efe163a80f269d448572f7906756e9338Eric Dumazet stats->rx_dropped = accum.rx_errors; 468bc66154efe163a80f269d448572f7906756e9338Eric Dumazet stats->multicast = accum.rx_multicast; 469fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 470fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 471fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 472fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 473b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 474b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 475b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 476b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 477b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 478b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 479b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 480b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic u32 macvlan_ethtool_get_rx_csum(struct net_device *dev) 481b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 482b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 483b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_rx_csum(vlan->lowerdev); 484b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 485b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4869edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 4879edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 4889edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 4899edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 490b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_settings(vlan->lowerdev, cmd); 4919edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 4929edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 4939edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic u32 macvlan_ethtool_get_flags(struct net_device *dev) 4949edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 4959edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 496b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_flags(vlan->lowerdev); 4979edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 4989edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 499b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 500b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 5019edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 502b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_rx_csum = macvlan_ethtool_get_rx_csum, 503b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 5049edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_flags = macvlan_ethtool_get_flags, 505b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 506b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 50754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 50854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 509fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 51054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 51154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 512008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 51354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 51454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 51554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 51654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_multicast_list = macvlan_set_multicast_list, 517bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 51854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 51954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 52054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 5218a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 522b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 523b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 524b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 52593f154b594fe47e4a7e5358b309add449a046cd3Eric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 52654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 527b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 5283b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 529b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 5308a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 5318a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 5328a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 5338a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 5348a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 5358a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 536b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 537b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 538b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 539b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 540b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 541b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 542b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 543ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 544b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 545b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 546b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 547b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 548b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 550b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 551b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 552b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 553b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 554b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 555b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 556ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 557a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 558a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 559ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 560ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 561a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags |= IFF_MACVLAN_PORT; 562ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5658b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirkostatic void macvlan_port_rcu_free(struct rcu_head *head) 5668b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko{ 5678b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct macvlan_port *port; 5688b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko 5698b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko port = container_of(head, struct macvlan_port, rcu); 5708b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko kfree(port); 5718b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko} 5728b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko 573b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 574b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 575a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko struct macvlan_port *port = macvlan_port_get(dev); 576b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 577a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 578ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 5798b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko call_rcu(&port->rcu, macvlan_port_rcu_free); 580b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 581b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 582b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 583b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 584b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 585b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 586b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 587b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 589b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 59027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 59127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 59227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 59327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 59427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 59527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 59627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 59727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 59827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 59927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 60027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 6042c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazetstatic int macvlan_get_tx_queues(struct net *net, 6052c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct nlattr *tb[], 6062c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *num_tx_queues, 6072c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *real_num_tx_queues) 6082c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet{ 6092c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct net_device *real_dev; 6102c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 6112c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!tb[IFLA_LINK]) 6122c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -EINVAL; 6132c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 6142c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet real_dev = __dev_get_by_index(net, nla_get_u32(tb[IFLA_LINK])); 6152c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!real_dev) 6162c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -ENODEV; 6172c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 6182c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *num_tx_queues = real_dev->num_tx_queues; 6192c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *real_num_tx_queues = real_dev->real_num_tx_queues; 6202c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return 0; 6212c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet} 6222c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 623fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 624fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 625fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 626fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 627fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 628b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 629b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 632b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 633b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 634b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 635b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 636b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 63781adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 641b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 642b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 643a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 644b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 645b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 646b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 647b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 648a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 649b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 650b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 651b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 652b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 653b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 654b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 655b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy random_ether_addr(dev->dev_addr); 656b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 657a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 658b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 659b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 660b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 661b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 662a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(lowerdev); 663b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 664b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 665b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 666b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 667fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 668fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 67027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 67127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 67227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 67327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 674b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 675b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 676f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko goto destroy_port; 677b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 679fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 680f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 681b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 682f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 683f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 684f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko if (list_empty(&port->vlans)) 685f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 686f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 687f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 688b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 689fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 690b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 691fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 692fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 693fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 694fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 695fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 696fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 697fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 698fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 699fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 700b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 701b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 702b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port = vlan->port; 703b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 704b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 70523289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 706b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 707b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (list_empty(&port->vlans)) 7087312096454b6cd71267eaa3d0efb408e449e9ff3Patrick McHardy macvlan_port_destroy(port->dev); 709b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 710fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 711b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 71227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 71327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 71427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 71527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 71627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 71727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 71827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 71927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 72027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 72127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 72227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 72327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return nla_total_size(4); 72427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 72527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 72627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 72727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 72827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 72927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 73027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 73127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann NLA_PUT_U32(skb, IFLA_MACVLAN_MODE, vlan->mode); 73227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 73327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 73427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 73527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 73627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 73727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 73827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 73927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 74027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 74127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 742fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 743fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 744fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 745fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 746fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_tx_queues = macvlan_get_tx_queues; 747fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 748fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 749fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 750fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 751fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 752fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 753fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 754fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 755fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 756fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 757fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 758fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 759b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 7608a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 761b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 762b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 763b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 764b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 765b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 766b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 767b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 768b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 769b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 770b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 771b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 772a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 773b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 774b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 775a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(dev); 776a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 777b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 778b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 779b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 780fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 781fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 782b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 783b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 784b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 785b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 7868c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 787b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 788b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 789b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 790b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 7913b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 7923b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 7933b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 7943b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 795b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 796fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->dev->rtnl_link_ops->dellink(vlan->dev, NULL); 797b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 7981c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 7991c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 8001c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 801b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 802b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 803b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 804b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 805b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 806b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 807b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 808b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 809b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 810b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 811b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 812b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 813b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 814b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 815fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 816b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 817b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 818b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 819b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 820b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 821b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 822b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 823b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 824b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 825b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 826b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 828b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 829b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 830b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 831b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 832b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 833b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 834b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 835b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 836b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 837