macvlan.c revision fccaf71011b171883efee5bae321eac4760584d1
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 41fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet/** 42fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet * struct macvlan_rx_stats - MACVLAN percpu rx stats 43fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet * @rx_packets: number of received packets 44fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet * @rx_bytes: number of received bytes 45fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet * @multicast: number of received multicast packets 46fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet * @rx_errors: number of errors 47fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet */ 48fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstruct macvlan_rx_stats { 49fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet unsigned long rx_packets; 50fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet unsigned long rx_bytes; 51fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet unsigned long multicast; 52fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet unsigned long rx_errors; 53fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet}; 54fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 55b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_dev { 56b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 57b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head list; 58b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node hlist; 59b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 60b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 61fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_rx_stats *rx_stats; 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 63b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 64b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 65b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 66b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 67b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 68b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 69b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 70b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 71b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[addr[5]], hlist) { 72ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(vlan->dev->dev_addr, addr)) 73b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 74b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 75b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 76b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 77b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 78f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_del(struct macvlan_dev *vlan) 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman synchronize_rcu(); 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 106f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 108f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 109f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 110ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(port->dev->dev_addr, addr)) 111f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 112f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 113f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 114f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 115f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 116f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 117f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 118f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 119b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 120b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_port *port) 121b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 122b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 123b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 124b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 125b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 126b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 127b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 128fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_rx_stats *rx_stats; 129b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 130efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 131efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 132efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 133b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 134b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 135b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 136fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id()); 137b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 138b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 139b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nskb == NULL) { 140fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats->rx_errors++; 141b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy continue; 142b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 143b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 144fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats->rx_bytes += skb->len + ETH_HLEN; 145fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats->rx_packets++; 146fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats->multicast++; 147b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 148b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb->dev = dev; 149ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(eth->h_dest, dev->broadcast)) 150b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb->pkt_type = PACKET_BROADCAST; 151b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else 152b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb->pkt_type = PACKET_MULTICAST; 153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_rx(nskb); 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) 161b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 162b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 163b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_port *port; 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 166fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_rx_stats *rx_stats; 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 168b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = rcu_dereference(skb->dev->macvlan_port); 169b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 171b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 172b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 173b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_broadcast(skb, port); 174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 175b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 176b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 177b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan = macvlan_hash_lookup(port, eth->h_dest); 178b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 179b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 180b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 181b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 182b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 183b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 184b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 186fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id()); 187b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 188b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (skb == NULL) { 189fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats->rx_errors++; 190b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 191b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 192b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 193fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats->rx_bytes += skb->len + ETH_HLEN; 194fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx_stats->rx_packets++; 195b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 196b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 197b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 198b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 199b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_rx(skb); 200b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 201b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 202b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 203424efe9caf6047ffbcd6b383ff4d2347254aabf1Stephen Hemmingerstatic netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 204424efe9caf6047ffbcd6b383ff4d2347254aabf1Stephen Hemminger struct net_device *dev) 205b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 2062c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet int i = skb_get_queue_mapping(skb); 2072c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 208b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 209b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 210b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 211b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 212b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = vlan->lowerdev; 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ret = dev_queue_xmit(skb); 214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 215b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (likely(ret == NET_XMIT_SUCCESS)) { 2162c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_packets++; 2172c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_bytes += len; 2182c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet } else 2192c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_dropped++; 2202c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 221cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 222b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 223b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 224b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2253b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2263b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 227b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 228b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 229b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 230b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2310c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2320c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 233b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 234b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2353b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 2363b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 2373b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 2383b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 2393b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 2403b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 2413b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 2423b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 243b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 244b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 245b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 246b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 247b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 248b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 249f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 250f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 251f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 252f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 253ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko err = dev_unicast_add(lowerdev, dev->dev_addr); 254b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 255b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 256b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 257b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 258b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 259b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 260b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 261f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 262b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 263b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 264b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 265ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 266b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 267b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 268b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 269b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 270b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 271b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 272b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 273b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 274b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 275b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 276b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 277b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 278b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 279ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 280b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 281f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 282b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 283b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 284b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 285ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 286ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 287ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 288ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 289ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 290ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 291ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 292ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 293ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 294ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 295f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 296f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 297f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 298f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 299f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 300f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 301f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 302ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 303ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko err = dev_unicast_add(lowerdev, addr->sa_data); 304ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 305f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 306ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 307ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 308f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 309f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 310f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 311ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 312ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 313ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 314b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 315b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 316b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 317b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 318b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 319b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 320b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 321b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 322b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 324b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 325b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 326b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 327b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 328b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 329b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 330b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 331b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 332b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 333b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 334b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 335b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 336b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 337b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 338b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 339b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 340b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 341b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 342b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 343b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 344b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 345b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 346cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 347b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 348b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 349b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 350b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 351b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_TSO_ECN | NETIF_F_TSO6) 352b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 353b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 354b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 355b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 356e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 357e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 358e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 359c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 360c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 361c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 362c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 363c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 364c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 365c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 366cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 367cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 368e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 369c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 370c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 371b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 372b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 373b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 374b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 375b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 376b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 377b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 378b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 379b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 380ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 381b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 382c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 383c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 384fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet vlan->rx_stats = alloc_percpu(struct macvlan_rx_stats); 385fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet if (!vlan->rx_stats) 386fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 387fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 388b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 389b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 390b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 391fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 392fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 393fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 394fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 395fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet free_percpu(vlan->rx_stats); 396fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 397fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 398fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic struct net_device_stats *macvlan_dev_get_stats(struct net_device *dev) 399fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 400fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct net_device_stats *stats = &dev->stats; 401fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 402fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 403fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet dev_txq_stats_fold(dev, stats); 404fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 405fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet if (vlan->rx_stats) { 406fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_rx_stats *p, rx = {0}; 407fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 408fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 409fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 410fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet p = per_cpu_ptr(vlan->rx_stats, i); 411fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.rx_packets += p->rx_packets; 412fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.rx_bytes += p->rx_bytes; 413fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.rx_errors += p->rx_errors; 414fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.multicast += p->multicast; 415fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 416fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_packets = rx.rx_packets; 417fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_bytes = rx.rx_bytes; 418fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_errors = rx.rx_errors; 419fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_dropped = rx.rx_errors; 420fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->multicast = rx.multicast; 421fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 422fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 423fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 424fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 425b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 426b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 428b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 429b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 430b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 431b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 432b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic u32 macvlan_ethtool_get_rx_csum(struct net_device *dev) 433b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 434b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 435b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_rx_csum(vlan->lowerdev); 436b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 437b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4389edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 4399edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 4409edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 4419edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 442b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_settings(vlan->lowerdev, cmd); 4439edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 4449edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 4459edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic u32 macvlan_ethtool_get_flags(struct net_device *dev) 4469edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 4479edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 448b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_flags(vlan->lowerdev); 4499edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 4509edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 451b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 452b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 4539edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 454b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_rx_csum = macvlan_ethtool_get_rx_csum, 455b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 4569edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_flags = macvlan_ethtool_get_flags, 457b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 45954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 46054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 461fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 46254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 46354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 464008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 46554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 46654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 46754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 46854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_multicast_list = macvlan_set_multicast_list, 469fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_get_stats = macvlan_dev_get_stats, 47054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 47154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 47254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 473b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_setup(struct net_device *dev) 474b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 475b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 476b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 47793f154b594fe47e4a7e5358b309add449a046cd3Eric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 47854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 479b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 4803b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 481b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 482b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 483b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 484b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 485b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 486b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 487b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 488b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 489b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 490b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 491b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 492b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 493b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 494b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 495b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 496b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 497b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 498b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 499b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 500b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 501b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rcu_assign_pointer(dev->macvlan_port, port); 502b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 503b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 504b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 505b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 506b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 507b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port = dev->macvlan_port; 508b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 509b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rcu_assign_pointer(dev->macvlan_port, NULL); 510b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy synchronize_rcu(); 511b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree(port); 512b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 513b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 514b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_transfer_operstate(struct net_device *dev) 515b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 516b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 517b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 518b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 519b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev->operstate == IF_OPER_DORMANT) 520b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_dormant_on(dev); 521b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else 522b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_dormant_off(dev); 523b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 524b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (netif_carrier_ok(lowerdev)) { 525b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!netif_carrier_ok(dev)) 526b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_carrier_on(dev); 527b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } else { 528f12ca5f97b7f99288aff1dc32a91f21c3230fefePatrick McHardy if (netif_carrier_ok(dev)) 529b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_carrier_off(dev); 530b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 531b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 532b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 533b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 534b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 535b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 536b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 537b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 538b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 539b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 540b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 541b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 542b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 543b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5442c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazetstatic int macvlan_get_tx_queues(struct net *net, 5452c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct nlattr *tb[], 5462c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *num_tx_queues, 5472c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *real_num_tx_queues) 5482c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet{ 5492c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct net_device *real_dev; 5502c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 5512c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!tb[IFLA_LINK]) 5522c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -EINVAL; 5532c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 5542c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet real_dev = __dev_get_by_index(net, nla_get_u32(tb[IFLA_LINK])); 5552c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!real_dev) 5562c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -ENODEV; 5572c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 5582c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *num_tx_queues = real_dev->num_tx_queues; 5592c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *real_num_tx_queues = real_dev->real_num_tx_queues; 5602c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return 0; 5612c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet} 5622c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 56381adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biedermanstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct nlattr *tb[], struct nlattr *data[]) 565b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 566b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 567b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 568b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 569b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 570b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 571b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 572b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 573b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 57481adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 575b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 576b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 577b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 578b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 579b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 580a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 581b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 582b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 583b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 584b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 585a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 586b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 587b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 589b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 590b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 591b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 592b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy random_ether_addr(dev->dev_addr); 593b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 594b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev->macvlan_port == NULL) { 595b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 596b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 597b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 598b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 599b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = lowerdev->macvlan_port; 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 604b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 605b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 606b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 607b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 608b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_transfer_operstate(dev); 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 613b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 61423289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazetstatic void macvlan_dellink(struct net_device *dev, struct list_head *head) 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port = vlan->port; 618b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 619b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 62023289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 621b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 622b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (list_empty(&port->vlans)) 6237312096454b6cd71267eaa3d0efb408e449e9ff3Patrick McHardy macvlan_port_destroy(port->dev); 624b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 625b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 626b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct rtnl_link_ops macvlan_link_ops __read_mostly = { 627b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 628b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .priv_size = sizeof(struct macvlan_dev), 6292c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet .get_tx_queues = macvlan_get_tx_queues, 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .setup = macvlan_setup, 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .validate = macvlan_validate, 632b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 633b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 634b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 635b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 636b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 637b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = dev->macvlan_port; 644b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 645b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 646b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 647b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 648b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 649b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 650b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_transfer_operstate(vlan->dev); 651b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 652b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 653b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 654b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 655b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 656b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 657b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 658b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 659b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 66023289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet macvlan_dellink(vlan->dev, NULL); 661b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 662b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 663b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 664b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 665b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 666b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 667b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 668b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 670b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 671b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 672b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 673b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 674b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 675b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_handle_frame_hook = macvlan_handle_frame; 676b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 677b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = rtnl_link_register(&macvlan_link_ops); 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 679b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 680b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 681b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 68252913246e0056c9c6215a778a3b31b6b9ce5c3efRami Rosen macvlan_handle_frame_hook = NULL; 683b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 684b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 685b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 686b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 687b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 688b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 689b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 690b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_handle_frame_hook = NULL; 691b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 692b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 693b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 694b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 695b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 696b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 697b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 698b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 699b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 700b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 701