macvlan.c revision 2c11455321f37da6fe6cc36353149f9ac9183334
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> 32b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 33b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) 34b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 35b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_port { 36b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 37b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; 38b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head vlans; 39b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 40b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 41b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_dev { 42b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 43b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head list; 44b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node hlist; 45b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 46b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 47b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 48b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 49b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 50b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 51b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 52b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 53b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 54b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 55b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 56b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[addr[5]], hlist) { 57ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(vlan->dev->dev_addr, addr)) 58b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 59b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 60b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 61b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 63f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 64f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 65f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 66f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 67f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 68f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 69f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 70f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 71f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_del(struct macvlan_dev *vlan) 72f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 74f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman synchronize_rcu(); 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 77f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 78f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 95ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(port->dev->dev_addr, addr)) 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 104b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 105b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_port *port) 106b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 107b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 108b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 109b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 110b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 111b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 112b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 113b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 114efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 115efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 116efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 117b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 118b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 119b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 120b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 121b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 122b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nskb == NULL) { 123b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_errors++; 124b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_dropped++; 125b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy continue; 126b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 127b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 128b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_bytes += skb->len + ETH_HLEN; 129b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_packets++; 130b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.multicast++; 131b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 132b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb->dev = dev; 133ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(eth->h_dest, dev->broadcast)) 134b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb->pkt_type = PACKET_BROADCAST; 135b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else 136b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb->pkt_type = PACKET_MULTICAST; 137b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 138b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_rx(nskb); 139b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 140b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 141b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 142b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 143b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 144b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) 145b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 146b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 147b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_port *port; 148b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 149b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 150b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 151b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = rcu_dereference(skb->dev->macvlan_port); 152b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_broadcast(skb, port); 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan = macvlan_hash_lookup(port, eth->h_dest); 161b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 162b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 163b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 168b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 169b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 171b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (skb == NULL) { 172b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_errors++; 173b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_dropped++; 174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 175b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 176b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 177b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_bytes += skb->len + ETH_HLEN; 178b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->stats.rx_packets++; 179b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 180b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 181b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 182b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 183b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_rx(skb); 184b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 186b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 187424efe9caf6047ffbcd6b383ff4d2347254aabf1Stephen Hemmingerstatic netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 188424efe9caf6047ffbcd6b383ff4d2347254aabf1Stephen Hemminger struct net_device *dev) 189b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1902c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet int i = skb_get_queue_mapping(skb); 1912c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 192b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 194b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 195b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 196b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = vlan->lowerdev; 197b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ret = dev_queue_xmit(skb); 198b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 199b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (likely(ret == NET_XMIT_SUCCESS)) { 2002c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_packets++; 2012c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_bytes += len; 2022c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet } else 2032c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_dropped++; 2042c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 205b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NETDEV_TX_OK; 206b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 207b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 208b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2093b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2103b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 211b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 212b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2150c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2160c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 217b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 218b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2193b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 2203b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 2213b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 2223b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 2233b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 2243b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 2253b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 2263b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 227b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 228b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 229b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 230b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 231b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 232b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 233f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 234f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 235f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 236f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 237ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko err = dev_unicast_add(lowerdev, dev->dev_addr); 238b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 239b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 240b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 241b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 242b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 243b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 244b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 245f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 246b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 247b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 248b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 249ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 250b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 251b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 252b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 253b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 254b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 255b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 256b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 257b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 258b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 259b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 260b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 261b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 262b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 263ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 264b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 265f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 266b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 267b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 268b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 269ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 270ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 271ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 272ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 273ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 274ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 275ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 276ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 277ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 278ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 279f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 280f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 281f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 282f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 283f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 284f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 285f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 286ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 287ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko err = dev_unicast_add(lowerdev, addr->sa_data); 288ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 289f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 290ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 291ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 292f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 293f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 294f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 295ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 296ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 297ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 298b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 299b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 300b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 301b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 302b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 303b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 304b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 305b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 306b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 307b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 308b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 309b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 310b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 311b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 312b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 313b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 314b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 315b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 316b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 317b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 318b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 319b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 320b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 321b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 322b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 324b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 325b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 326b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 327b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 328b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 329b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 330cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 331b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 332b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 333b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 334b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 335b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_TSO_ECN | NETIF_F_TSO6) 336b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 337b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 338b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 339b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 340e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 341e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 342e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 343c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 344c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 345c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 346c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 347c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 348c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 349c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 350cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 351cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 352e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 353c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 354c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 355b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 356b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 357b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 358b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 359b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 360b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 361b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 362b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 363b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 364ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 365b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 366c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 367c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 368b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 369b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 370b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 371b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 372b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 373b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 374b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 375b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 376b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 377b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 378b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic u32 macvlan_ethtool_get_rx_csum(struct net_device *dev) 379b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 380b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 381b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_rx_csum(vlan->lowerdev); 382b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 383b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3849edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 3859edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 3869edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 3879edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 388b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_settings(vlan->lowerdev, cmd); 3899edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 3909edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 3919edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic u32 macvlan_ethtool_get_flags(struct net_device *dev) 3929edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 3939edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 394b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_flags(vlan->lowerdev); 3959edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 3969edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 397b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 398b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 3999edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_rx_csum = macvlan_ethtool_get_rx_csum, 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 4029edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_flags = macvlan_ethtool_get_flags, 403b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 404b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 40554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 40654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 40754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 40854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 409008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 41054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 41154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 41254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 41354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_multicast_list = macvlan_set_multicast_list, 41454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 41554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 41654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 417b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_setup(struct net_device *dev) 418b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 419b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 420b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 42193f154b594fe47e4a7e5358b309add449a046cd3Eric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 42254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 423b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 4243b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 425b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 426b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 428b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 429b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 430b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 431b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 432b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 433b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 434b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 435b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 436b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 437b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 438b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 439b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 440b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 441b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 442b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 443b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 444b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 445b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rcu_assign_pointer(dev->macvlan_port, port); 446b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 447b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 448b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 449b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 450b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 451b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port = dev->macvlan_port; 452b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 453b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rcu_assign_pointer(dev->macvlan_port, NULL); 454b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy synchronize_rcu(); 455b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree(port); 456b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 457b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_transfer_operstate(struct net_device *dev) 459b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 460b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 461b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 462b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 463b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev->operstate == IF_OPER_DORMANT) 464b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_dormant_on(dev); 465b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else 466b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_dormant_off(dev); 467b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 468b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (netif_carrier_ok(lowerdev)) { 469b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!netif_carrier_ok(dev)) 470b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_carrier_on(dev); 471b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } else { 472f12ca5f97b7f99288aff1dc32a91f21c3230fefePatrick McHardy if (netif_carrier_ok(dev)) 473b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_carrier_off(dev); 474b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 475b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 476b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 477b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 478b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 479b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 480b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 481b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 482b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 483b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 484b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 485b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 486b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 487b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4882c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazetstatic int macvlan_get_tx_queues(struct net *net, 4892c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct nlattr *tb[], 4902c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *num_tx_queues, 4912c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *real_num_tx_queues) 4922c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet{ 4932c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct net_device *real_dev; 4942c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 4952c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!tb[IFLA_LINK]) 4962c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -EINVAL; 4972c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 4982c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet real_dev = __dev_get_by_index(net, nla_get_u32(tb[IFLA_LINK])); 4992c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!real_dev) 5002c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -ENODEV; 5012c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 5022c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *num_tx_queues = real_dev->num_tx_queues; 5032c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *real_num_tx_queues = real_dev->real_num_tx_queues; 5042c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return 0; 5052c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet} 5062c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 507b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_newlink(struct net_device *dev, 508b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct nlattr *tb[], struct nlattr *data[]) 509b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 510b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 511b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 512b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 513b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 514b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 515b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 516b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 517b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 518c346dca10840a874240c78efe3f39acf4312a1f2YOSHIFUJI Hideaki lowerdev = __dev_get_by_index(dev_net(dev), nla_get_u32(tb[IFLA_LINK])); 519b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 520b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 521b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 522b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 523b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 524a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 525b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 526b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 527b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 528b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 529a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 530b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 531b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 532b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 533b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 534b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 535b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 536b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy random_ether_addr(dev->dev_addr); 537b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 538b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev->macvlan_port == NULL) { 539b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 540b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 541b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 542b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 543b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = lowerdev->macvlan_port; 544b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 545b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 546b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 547b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 548b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 550b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 551b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 552b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 553b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 554b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_transfer_operstate(dev); 555b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 556b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 557b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 558b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_dellink(struct net_device *dev) 559b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 560b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 561b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port = vlan->port; 562b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice(dev); 565b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 566b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (list_empty(&port->vlans)) 5677312096454b6cd71267eaa3d0efb408e449e9ff3Patrick McHardy macvlan_port_destroy(port->dev); 568b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 569b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 570b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct rtnl_link_ops macvlan_link_ops __read_mostly = { 571b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 572b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .priv_size = sizeof(struct macvlan_dev), 5732c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet .get_tx_queues = macvlan_get_tx_queues, 574b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .setup = macvlan_setup, 575b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .validate = macvlan_validate, 576b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 577b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 578b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 579b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 580b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 581b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 582b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 583b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 584b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 585b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 586b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 587b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = dev->macvlan_port; 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 589b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 590b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 591b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 592b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 593b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 594b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_transfer_operstate(vlan->dev); 595b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 596b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 597b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 598b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 599b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 604b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_dellink(vlan->dev); 605b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 606b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 607b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 608b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 613b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 614b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 618b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 619b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_handle_frame_hook = macvlan_handle_frame; 620b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 621b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = rtnl_link_register(&macvlan_link_ops); 622b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 623b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 624b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 625b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 62652913246e0056c9c6215a778a3b31b6b9ce5c3efRami Rosen macvlan_handle_frame_hook = NULL; 627b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 628b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 629b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 632b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 633b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 634b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_handle_frame_hook = NULL; 635b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 636b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 637b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 644b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 645