macvlan.c revision a1e514c5d0397b5581721aad9b303f7df83b103d
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 119a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmannstatic inline void macvlan_count_rx(const struct macvlan_dev *vlan, 120a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann unsigned int len, bool success, 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann bool multicast) 122a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 123a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann struct macvlan_rx_stats *rx_stats; 124a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 125a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id()); 126a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (likely(success)) { 127a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann rx_stats->rx_packets++;; 128a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann rx_stats->rx_bytes += len; 129a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (multicast) 130a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann rx_stats->multicast++; 131a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann } else { 132a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann rx_stats->rx_errors++; 133a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann } 134a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 135a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 136a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, struct net_device *dev, 137a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann const struct ethhdr *eth) 138a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 139a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 140a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 141a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 142a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 143a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!compare_ether_addr_64bits(eth->h_dest, 144a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann dev->broadcast)) 145a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 146a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 147a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 148a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 149a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return netif_rx(skb); 150a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 151a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 152b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_port *port) 154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 160a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 161b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 162efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 163efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 164efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 168a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err = macvlan_broadcast_one(nskb, vlan->dev, eth); 169a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 170a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 171b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 172b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 173b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 175b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 176b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) 177b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 178b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 179b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_port *port; 180b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 181b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 182a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann unsigned int len; 183b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 184b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = rcu_dereference(skb->dev->macvlan_port); 185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 186b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 187b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 188b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 189b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_broadcast(skb, port); 190b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 191b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 192b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan = macvlan_hash_lookup(port, eth->h_dest); 194b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 195b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return skb; 196b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 197b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 198b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 199b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 200b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 201b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 202a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 203b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 204a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, len, skb != NULL, 0); 205a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 206b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 207b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 208b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 209b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 210b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 211b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_rx(skb); 212b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 215424efe9caf6047ffbcd6b383ff4d2347254aabf1Stephen Hemmingerstatic netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 216424efe9caf6047ffbcd6b383ff4d2347254aabf1Stephen Hemminger struct net_device *dev) 217b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 2182c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet int i = skb_get_queue_mapping(skb); 2192c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct netdev_queue *txq = netdev_get_tx_queue(dev, i); 220b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 221b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 222b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 223b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 224b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = vlan->lowerdev; 225b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ret = dev_queue_xmit(skb); 226b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 227b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (likely(ret == NET_XMIT_SUCCESS)) { 2282c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_packets++; 2292c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_bytes += len; 2302c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet } else 2312c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet txq->tx_dropped++; 2322c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 233cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 234b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 235b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 236b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2373b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2383b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 239b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 240b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 241b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 242b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2430c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2440c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 245b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 246b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2473b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 2483b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 2493b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 2503b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 2513b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 2523b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 2533b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 2543b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 255b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 256b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 257b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 258b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 259b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 260b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 261f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 262f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 263f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 264f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 265ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko err = dev_unicast_add(lowerdev, dev->dev_addr); 266b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 267b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 268b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 269b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 270b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 271b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 272b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 273f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 274b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 275b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 276b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 277ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 278b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 279b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 280b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 281b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 282b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 283b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 284b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 285b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 286b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 287b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 288b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 289b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 290b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 291ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 292b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 293f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_del(vlan); 294b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 295b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 296b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 297ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 298ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 299ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 300ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 301ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 302ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 303ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 304ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 305ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 306ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 307f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 308f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 309f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 310f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 311f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 312f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 313f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 314ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 315ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko err = dev_unicast_add(lowerdev, addr->sa_data); 316ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 317f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 318ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 319ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko dev_unicast_delete(lowerdev, dev->dev_addr); 320f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 321f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 322f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 323ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 324ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 325ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 326b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 327b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 328b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 329b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 330b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 331b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 332b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 333b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 334b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 335b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 336b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 337b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 338b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 339b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 340b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 341b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 342b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 343b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 344b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 345b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 346b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 347b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 348b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 349b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 350b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 351b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 352b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 353b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 354b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 355b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 356b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 357b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 358cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 359b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 360b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 361b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 362b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 363b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_TSO_ECN | NETIF_F_TSO6) 364b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 365b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 366b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 367b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 368e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 369e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 370e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 371c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 372c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 373c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 374c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 375c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 376c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 377c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 378cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 379cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 380e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 381c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 382c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 383b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 384b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 385b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 386b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 387b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 388b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 389b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 390b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 391b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 392ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 393b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 394c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 395c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 396fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet vlan->rx_stats = alloc_percpu(struct macvlan_rx_stats); 397fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet if (!vlan->rx_stats) 398fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 399fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 403fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 404fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 405fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 406fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 407fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet free_percpu(vlan->rx_stats); 408fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 409fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 410fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic struct net_device_stats *macvlan_dev_get_stats(struct net_device *dev) 411fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 412fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct net_device_stats *stats = &dev->stats; 413fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 414fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 415fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet dev_txq_stats_fold(dev, stats); 416fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 417fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet if (vlan->rx_stats) { 418fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_rx_stats *p, rx = {0}; 419fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 420fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 421fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 422fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet p = per_cpu_ptr(vlan->rx_stats, i); 423fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.rx_packets += p->rx_packets; 424fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.rx_bytes += p->rx_bytes; 425fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.rx_errors += p->rx_errors; 426fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet rx.multicast += p->multicast; 427fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 428fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_packets = rx.rx_packets; 429fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_bytes = rx.rx_bytes; 430fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_errors = rx.rx_errors; 431fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->rx_dropped = rx.rx_errors; 432fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet stats->multicast = rx.multicast; 433fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 434fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 435fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 436fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 437b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 438b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 439b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 440b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 441b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 442b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 443b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 444b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic u32 macvlan_ethtool_get_rx_csum(struct net_device *dev) 445b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 446b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 447b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_rx_csum(vlan->lowerdev); 448b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 449b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4509edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 4519edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 4529edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 4539edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 454b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_settings(vlan->lowerdev, cmd); 4559edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 4569edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 4579edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic u32 macvlan_ethtool_get_flags(struct net_device *dev) 4589edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 4599edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 460b1b67dd45a6b629eb41553856805aaa1614fbb83Patrick McHardy return dev_ethtool_get_flags(vlan->lowerdev); 4619edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 4629edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 463b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 464b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 4659edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 466b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_rx_csum = macvlan_ethtool_get_rx_csum, 467b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 4689edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_flags = macvlan_ethtool_get_flags, 469b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 470b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 47154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 47254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 473fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 47454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 47554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 476008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 47754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 47854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 47954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 48054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_multicast_list = macvlan_set_multicast_list, 481fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_get_stats = macvlan_dev_get_stats, 48254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 48354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 48454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 485b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_setup(struct net_device *dev) 486b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 487b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 488b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 48993f154b594fe47e4a7e5358b309add449a046cd3Eric Dumazet dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 49054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 491b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 4923b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 493b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 494b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 495b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 496b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 497b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 498b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 499b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 500b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 501b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 502b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 503b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 504b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 505b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 506b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 507b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 508b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 509b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 510b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 511b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 512b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 513b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rcu_assign_pointer(dev->macvlan_port, port); 514b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 515b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 516b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 517b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 518b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 519b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port = dev->macvlan_port; 520b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 521b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rcu_assign_pointer(dev->macvlan_port, NULL); 522b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy synchronize_rcu(); 523b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree(port); 524b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 525b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 526b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_transfer_operstate(struct net_device *dev) 527b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 528b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 529b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 530b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 531b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev->operstate == IF_OPER_DORMANT) 532b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_dormant_on(dev); 533b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else 534b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_dormant_off(dev); 535b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 536b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (netif_carrier_ok(lowerdev)) { 537b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!netif_carrier_ok(dev)) 538b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_carrier_on(dev); 539b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } else { 540f12ca5f97b7f99288aff1dc32a91f21c3230fefePatrick McHardy if (netif_carrier_ok(dev)) 541b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netif_carrier_off(dev); 542b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 543b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 544b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 545b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 546b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 547b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 548b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 550b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 551b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 552b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 553b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 554b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 555b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5562c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazetstatic int macvlan_get_tx_queues(struct net *net, 5572c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct nlattr *tb[], 5582c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *num_tx_queues, 5592c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet unsigned int *real_num_tx_queues) 5602c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet{ 5612c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet struct net_device *real_dev; 5622c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 5632c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!tb[IFLA_LINK]) 5642c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -EINVAL; 5652c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 5662c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet real_dev = __dev_get_by_index(net, nla_get_u32(tb[IFLA_LINK])); 5672c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet if (!real_dev) 5682c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return -ENODEV; 5692c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 5702c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *num_tx_queues = real_dev->num_tx_queues; 5712c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet *real_num_tx_queues = real_dev->real_num_tx_queues; 5722c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet return 0; 5732c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet} 5742c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 57581adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biedermanstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 576b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct nlattr *tb[], struct nlattr *data[]) 577b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 578b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 579b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 580b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 581b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 582b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 583b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 584b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 585b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 58681adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 587b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 589b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 590b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 591b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 592a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 593b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 594b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 595b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 596b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 597a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 598b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 599b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 604b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy random_ether_addr(dev->dev_addr); 605b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 606b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev->macvlan_port == NULL) { 607b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 608b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = lowerdev->macvlan_port; 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 613b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 614b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 618b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 619b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 620b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 621b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 622b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_transfer_operstate(dev); 623b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 624b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 625b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 62623289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazetstatic void macvlan_dellink(struct net_device *dev, struct list_head *head) 627b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 628b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 629b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port = vlan->port; 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 63223289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 633b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 634b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (list_empty(&port->vlans)) 6357312096454b6cd71267eaa3d0efb408e449e9ff3Patrick McHardy macvlan_port_destroy(port->dev); 636b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 637b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct rtnl_link_ops macvlan_link_ops __read_mostly = { 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .priv_size = sizeof(struct macvlan_dev), 6412c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet .get_tx_queues = macvlan_get_tx_queues, 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .setup = macvlan_setup, 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .validate = macvlan_validate, 644b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 645b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 646b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 647b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 648b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 649b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 650b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 651b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 652b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 653b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 654b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 655b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = dev->macvlan_port; 656b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 657b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 658b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 659b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 660b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 661b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 662b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_transfer_operstate(vlan->dev); 663b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 664b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 665b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 666b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 667b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 668b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 670b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 671b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 67223289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet macvlan_dellink(vlan->dev, NULL); 673b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 674b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 675b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 676b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 677b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 679b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 680b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 681b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 682b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 683b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 684b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 685b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 686b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 687b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_handle_frame_hook = macvlan_handle_frame; 688b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 689b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = rtnl_link_register(&macvlan_link_ops); 690b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 691b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 692b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 693b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 69452913246e0056c9c6215a778a3b31b6b9ce5c3efRami Rosen macvlan_handle_frame_hook = NULL; 695b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 696b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 697b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 698b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 699b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 700b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 701b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 702b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy macvlan_handle_frame_hook = NULL; 703b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 704b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 705b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 706b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 707b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 708b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 709b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 710b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 711b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 712b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 713