macvlan.c revision 266e83474c98e9f18d31f4837cfe05819a660d32
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> 2987002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko#include <linux/if_vlan.h> 30b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_link.h> 31b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_macvlan.h> 32cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet#include <linux/hash.h> 33b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <net/rtnetlink.h> 34618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann#include <net/xfrm.h> 35b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 36b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) 37b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 38b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_port { 39b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 40b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; 41b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head vlans; 428b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct rcu_head rcu; 43eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala bool passthru; 44d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman int count; 45b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 46b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 47d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biedermanstatic void macvlan_port_destroy(struct net_device *dev); 48d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 49e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) 50e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 51e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rcu_dereference(dev->rx_handler_data); 52e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 53e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 54e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) 55e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 56e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rtnl_dereference(dev->rx_handler_data); 57e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 58e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 59a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 60a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 61b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 63b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 64b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 65b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 66b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[addr[5]], hlist) { 67a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) 68b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 69b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 70b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 71b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 72b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 74f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 77f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 78f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 81449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 84449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 85449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 91449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 106a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(port->dev->dev_addr, addr)) 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 108f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 109f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 110f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 111f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 112f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 113f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 114f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 115a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 116fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 117fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 118618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 119a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 120fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 122a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 123a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 124618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 125fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 126618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 127a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 128a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) 129a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 130a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 131a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 132a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 133fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->receive(skb); 134a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 135a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 1363807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic u32 macvlan_hash_mix(const struct macvlan_dev *vlan) 1373807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet{ 1383807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); 1393807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet} 1403807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1413807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1423807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic unsigned int mc_hash(const struct macvlan_dev *vlan, 1433807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet const unsigned char *addr) 144cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet{ 145cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet u32 val = __get_unaligned_cpu32(addr + 2); 146cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 1473807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet val ^= macvlan_hash_mix(vlan); 148cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet return hash_32(val, MACVLAN_MC_FILTER_BITS); 149cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet} 150cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 151b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 152618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 153618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 154618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 160a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 1613807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet unsigned int hash; 162b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 163efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 164efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 165efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 167b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[i], hlist) { 168618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 169618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 170618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 1713807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet hash = mc_hash(vlan, eth->h_dest); 172cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (!test_bit(hash, vlan->mc_filter)) 173cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet continue; 174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 175fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_broadcast_one(nskb, vlan, eth, 176618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann mode == MACVLAN_MODE_BRIDGE); 177a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 178a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 179b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 180b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 181b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 182b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 183b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 1848a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirkostatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 186ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 1878a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko struct sk_buff *skb = *pskb; 188b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 189b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 190618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 191b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 192ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 193ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 194b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 195a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 196b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 197bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet skb = ip_check_defrag(skb, IP_DEFRAG_MACVLAN); 198bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet if (!skb) 199bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet return RX_HANDLER_CONSUMED; 2004ec7ac1203bcf21f5e3d977c9818b1a56c9ef40dEric Dumazet eth = eth_hdr(skb); 201618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 202618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 203618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 204618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 205618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 206618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 207eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 208618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 209618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 210618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 211618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 212618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 213618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 214618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 215618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 216618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 217618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 218618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 219618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 220618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 221729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger else { 222729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger /* forward to original port. */ 223729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger vlan = src; 224729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger ret = macvlan_broadcast_one(skb, vlan, eth, 0); 225729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger goto out; 226729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger } 227729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger 2288a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 229b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 230b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 231eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 232233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko vlan = list_first_or_null_rcu(&port->vlans, 233233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko struct macvlan_dev, list); 234eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 235eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 236b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 2378a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 238b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 239b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 240b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 241b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 2428a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 243b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 244a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 245b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 246a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 247ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 248b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 249b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 250b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 251b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 252ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 253ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 254ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 255ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 2568a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 257b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 258b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 259618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 260618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 261618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 262618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 263618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 26412a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano __u8 ip_summed = skb->ip_summed; 265618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 266618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 267618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 26812a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = CHECKSUM_UNNECESSARY; 269618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 270618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 271618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 272618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 273618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 274618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 275618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 276618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 277618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 278a37dd3332319260cce81ac91ce25fcc3a31de997David Ward /* send to lowerdev first for its network taps */ 279cb2d0f3e968bff7c6d262aca3e3ab8d4184e69b2David Ward dev_forward_skb(vlan->lowerdev, skb); 280618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 281618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 282618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 283618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 284618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 285618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 28612a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = ip_summed; 28759b9997baba5242997ddc7bd96b1391f5275a5a4David S. Miller skb->dev = vlan->lowerdev; 288618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 289618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 290618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 291fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 292fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 293b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 294b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 295b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 2968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet const struct macvlan_dev *vlan = netdev_priv(dev); 297b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 298618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret = macvlan_queue_xmit(skb, dev); 2992d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 3008ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *pcpu_stats; 3012c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 3028ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 3038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 3048ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 3058ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 3068ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 3078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 3088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 3098ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 310cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 311b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 312fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 313b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 314b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 3153b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 3163b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 317b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 318b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 319b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 320b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3210c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 3220c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 324b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3253b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 3263b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 3273b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 3283b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 3293b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 3303b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 3313b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 3323b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 333b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 334b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 335b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 336b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 337b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 338b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 339eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 340df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) 341df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(lowerdev, 1); 342eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 343eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 344eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 345f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 346f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 347f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 348f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 349a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 350b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 351b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 352b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 353b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 354b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 355b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 356b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 357eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 358eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 359f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 360b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 361b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 362b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 363a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 364b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 365b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 366b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 367b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 368b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 369b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 370b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 371b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 372b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 373df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_unsync(lowerdev, dev); 374df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_mc_unsync(lowerdev, dev); 375df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 376eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 377df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) 378df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(lowerdev, -1); 379eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 380eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 381eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 382b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 383b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 384b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 385a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 386b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 387eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 388449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 389b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 390b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 391b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 392ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 393ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 394ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 395ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 396ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 397ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 398ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 399ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 400ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 401ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 402f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 403f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 404f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 405f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 406f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 407f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 408f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 409ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 410a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 411ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 412f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 413ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 414a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 415f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 416f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 417f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 418ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 419ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 420ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 421b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 422b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 423b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 424b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 425b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 426b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 428b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 429b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 430df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabendstatic void macvlan_set_mac_lists(struct net_device *dev) 431b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 432b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 433b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 434cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { 435cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_fill(vlan->mc_filter, MACVLAN_MC_FILTER_SZ); 436cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } else { 437cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet struct netdev_hw_addr *ha; 438cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); 439cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 440cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); 441cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet netdev_for_each_mc_addr(ha, dev) { 4423807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, ha->addr), filter); 443cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 444d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 4453807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, dev->broadcast), filter); 446d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 447cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_copy(vlan->mc_filter, filter, MACVLAN_MC_FILTER_SZ); 448cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 449df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_sync(vlan->lowerdev, dev); 450b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 451b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 452b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 453b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 454b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 455b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 456b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 457b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 459b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 460b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 461b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 462b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 463b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 464b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 465b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 466b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 467b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 468b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 469cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 470b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 471b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 472b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 473b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 4748d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ 47528d2b136ca6c7bf7173a43a90f747ecda5b0520dPatrick McHardy NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) 476b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 477b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 478b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 479b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 480e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 481e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 482e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 483c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 484c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 485c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 486c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 487c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 488c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 489c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 490cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 491cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 492e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 493c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 494c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 495b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 496b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 497b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 498b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 499b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 500b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 501b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 502b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 5038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet dev->features |= NETIF_F_LLTX; 5048c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 505b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 506ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 507b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 508c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 509c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 5108ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet vlan->pcpu_stats = alloc_percpu(struct macvlan_pcpu_stats); 5118ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 512fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 513fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 514b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 515b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 516b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 517fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 518fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 519fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 520d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 521fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5228ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 523d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 524d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 525d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 526d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 527fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 528fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 52928172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 53028172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 531fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 532fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 533fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5348ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 5358ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *p; 5368ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 5378ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 538bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 539fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 540fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 541fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 5428ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 543bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 544bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 545bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 546bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 547bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 5488ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 5498ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 550bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 5518ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 5528ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 5538ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 5548ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 5558ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 5568ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 5578ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 5588ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 5598ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 5608ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 5618ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 562fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 5638ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 5648ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 5658ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 566fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 567fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 568fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 569fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5708e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_add_vid(struct net_device *dev, 57180d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 5728d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5738d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5748d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5758d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 57680d5c3689b886308247da295a228a54df49a44f6Patrick McHardy return vlan_vid_add(lowerdev, proto, vid); 5778d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5788d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 5798e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_kill_vid(struct net_device *dev, 58080d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 5818d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5828d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5838d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5848d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 58580d5c3689b886308247da295a228a54df49a44f6Patrick McHardy vlan_vid_del(lowerdev, proto, vid); 5868e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirko return 0; 5878d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5888d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 589edc7d57327bd08bfd04f41531d49b176369db218stephen hemmingerstatic int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 590df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 5916b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr, 592df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend u16 flags) 593df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 594df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 595df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 596df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 597df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 598df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 599df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 600df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 601df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_add_excl(dev, addr); 602df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 603df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_add_excl(dev, addr); 604df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 605df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 606df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 607df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 6081690be63a27b20ae65c792729a44f5970561ffa4Vlad Yasevichstatic int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 609df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 6106b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr) 611df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 612df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 613df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 614df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 615df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 616df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 617df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 618df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 619df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_del(dev, addr); 620df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 621df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_del(dev, addr); 622df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 623df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 624df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 625df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 626b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 627b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 628b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 6297826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); 6307826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 632b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 6339edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 6349edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 6359edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 6369edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 6374bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko 6384bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko return __ethtool_get_settings(vlan->lowerdev, cmd); 6399edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 6409edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 6412be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevichstatic netdev_features_t macvlan_fix_features(struct net_device *dev, 6422be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich netdev_features_t features) 6432be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich{ 6442be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich struct macvlan_dev *vlan = netdev_priv(dev); 6452be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 6462be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich return features & (vlan->set_features | ~MACVLAN_FEATURES); 6472be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich} 6482be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 649b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 650b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 6519edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 652b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 653b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 654b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 65554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 65654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 657fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 65854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 65954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 660008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 66154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 6622be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich .ndo_fix_features = macvlan_fix_features, 66354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 66454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 665df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_set_rx_mode = macvlan_set_mac_lists, 666bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 66754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 6688d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, 6698d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, 670df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_add = macvlan_fdb_add, 671df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_del = macvlan_fdb_del, 672df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_dump = ndo_dflt_fdb_dump, 67354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 67454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 6758a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 676b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 677b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 679550fd08c2cebad61c548def135f67aba284c6162Neil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 68087ab7f6f2874f1115817e394a7ed2dea1c72549eVlad Yasevich dev->priv_flags |= IFF_UNICAST_FLT; 68154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 682b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 6833b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 684b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 6858a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 6868a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 6878a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 6888a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 6898a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 6908a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 691b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 692b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 693b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 694b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 695b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 696b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 697b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 698ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 699b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 700b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 701b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 702b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 703b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 704b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 705b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 706b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 707eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 708b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 709b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 710b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 711b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 712ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 713a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 714a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 715ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 716d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 717d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 718ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 719b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 720b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 721b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 722b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 723e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet struct macvlan_port *port = macvlan_port_get_rtnl(dev); 724b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 725a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 726ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 7276e070aecd9e304264a6b8655f49aa7e6db0e55f2Lai Jiangshan kfree_rcu(port, rcu); 728b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 729b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 730b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 731b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 732b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 733b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 734b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 735b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 736b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 737b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 73827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 73927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 74027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 74127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 74227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 74327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 744eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 74527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 74627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 74727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 74827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 74927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 750b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 751b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 752b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 753fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 754fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 755fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 756fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 757fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 758b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 759b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 760b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 761b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 762b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 763b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 764b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 765b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 766b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 76781adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 768b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 769b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 770b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 771b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 772b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 773a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 774b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 775b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 776b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 777b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 778a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 779b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 780b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 781b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 782b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 783b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 784b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 7857ce5d222190cb3ce3ae88bafde7c4fa52a5103e0Danny Kukawka eth_hw_addr_random(dev); 786b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 787a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 788b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 789b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 790b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 791b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 792e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(lowerdev); 793b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 794eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 795eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 796eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 797eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 798b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 799b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 800b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 801fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 802fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 8032be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich vlan->set_features = MACVLAN_FEATURES; 804b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 80527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 80627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 80727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 80827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 809df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) 810df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 811df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 812eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 813d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (port->count) 814eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 815eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 816eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); 817eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 818eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 8197cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko err = netdev_upper_dev_link(lowerdev, dev); 8207cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko if (err) 8217cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko goto destroy_port; 8227cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko 823d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count += 1; 824b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 825b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 8267cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko goto upper_dev_unlink; 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 828233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_add_tail_rcu(&vlan->list, &port->vlans); 829fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 830f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 831b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 832f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 8337cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirkoupper_dev_unlink: 8347cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko netdev_upper_dev_unlink(lowerdev, dev); 835f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 836d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 837d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 838f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 839f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 840f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 841b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 842fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 843b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 844fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 845fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 846fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 847fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 848fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 849fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 850fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 851fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 852fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 853b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 854b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 855b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 856233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_del_rcu(&vlan->list); 85723289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 8587cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko netdev_upper_dev_unlink(vlan->lowerdev, dev); 859b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 860fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 861b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 86227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 86327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 86427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 86527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 866266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin enum macvlan_mode mode; 867266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin bool set_mode = false; 868266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin 869266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Validate mode, but don't set yet: setting flags may fail. */ 870266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (data && data[IFLA_MACVLAN_MODE]) { 871266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin set_mode = true; 872266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 873266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Passthrough mode can't be set or cleared dynamically */ 874266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if ((mode == MACVLAN_MODE_PASSTHRU) != 875266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin (vlan->mode == MACVLAN_MODE_PASSTHRU)) 876266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin return -EINVAL; 877266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin } 87899ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 879df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) { 880df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 881df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; 88299ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (vlan->port->passthru && promisc) { 88399ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin int err; 88499ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 88599ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (flags & MACVLAN_FLAG_NOPROMISC) 88699ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, -1); 88799ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin else 88899ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, 1); 88999ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (err < 0) 89099ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin return err; 89199ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin } 892df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = flags; 893df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend } 894266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (set_mode) 895266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin vlan->mode = mode; 89627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 89727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 89827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 89927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 90027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 90101fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet return (0 90201fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(4) /* IFLA_MACVLAN_MODE */ 90301fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ 90401fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet ); 90527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 90627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 90727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 90827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 90927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 91027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 91127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 912ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) 913ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller goto nla_put_failure; 914df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) 915df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend goto nla_put_failure; 91627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 91727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 91827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 91927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 92027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 92127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 92227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 923df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 924df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, 92527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 92627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 927fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 928fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 929fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 930fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 931fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 932fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 933fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 934fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 935fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 936fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 937fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 938fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 939fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 940fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 941fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 942fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 943b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 9448a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 945b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 946b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 947b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 948b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 949b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 950b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 951b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 952351638e7deeed2ec8ce451b53d33921b3da68f83Jiri Pirko struct net_device *dev = netdev_notifier_info_to_dev(ptr); 953b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 954b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 955226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 956b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 957a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 958b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 959b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 960e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(dev); 961a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 962b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 963b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 964b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 965fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 966fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 967b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 968b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 969b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 970b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 9718c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 972b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 973b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 974b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 975b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 9763b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 9773b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 9783b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 9793b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 980b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 981226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 982226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 983226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 984b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 9851c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 9861c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 9871c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 988b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 989b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 990b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 991b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 992b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 993b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 994b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 995b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 996b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 997b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 998b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 999b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1000b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 1001b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1002fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 1003b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 1004b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 1005b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 1006b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 1007b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1008b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 1009b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1010b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1011b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 1012b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1013b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 1014b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1015b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1016b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1017b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 1018b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 1019b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1020b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 1021b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 1022b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 1023b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 1024