macvlan.c revision 688cea83f4396fa98b77a126ed278b89daccccdc
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> 33412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu#include <linux/workqueue.h> 34b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <net/rtnetlink.h> 35618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann#include <net/xfrm.h> 36688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#include <linux/netpoll.h> 37b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 38b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) 39b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 40b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_port { 41b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 42b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; 43b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head vlans; 448b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct rcu_head rcu; 45412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff_head bc_queue; 46412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct work_struct bc_work; 47eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala bool passthru; 48b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 49b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 50a188a54d11629bef2169052297e61f3767ca8ce5dingtianhong#define MACVLAN_PORT_IS_EMPTY(port) list_empty(&port->vlans) 51a188a54d11629bef2169052297e61f3767ca8ce5dingtianhong 52412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustruct macvlan_skb_cb { 53412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *src; 54412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu}; 55412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 56412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu#define MACVLAN_SKB_CB(__skb) ((struct macvlan_skb_cb *)&((__skb)->cb[0])) 57412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 58d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biedermanstatic void macvlan_port_destroy(struct net_device *dev); 59d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 60e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) 61e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 62e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rcu_dereference(dev->rx_handler_data); 63e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 64e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 65e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) 66e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 67e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rtnl_dereference(dev->rx_handler_data); 68e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 69e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 70a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 71a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 72b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 73b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 74b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 75b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 76b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 77b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[addr[5]], hlist) { 78a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) 79b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 80b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 81b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 82b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 83b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 92449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 95449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 96449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 102449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 106f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 108f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 109f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 110f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 111f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 112f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 113f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 114f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 115f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 116f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 117a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(port->dev->dev_addr, addr)) 118f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 119f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 120f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 121f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 122f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 123f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 124f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 125f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 126a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 127fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 128fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 129618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 130a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 131fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 132a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 133618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 134412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return __dev_forward_skb(dev, skb); 135618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 136a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 137a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) 138a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 139a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 140a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 141a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 142412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return 0; 143a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 144a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 1453807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic u32 macvlan_hash_mix(const struct macvlan_dev *vlan) 1463807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet{ 1473807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); 1483807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet} 1493807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1503807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1513807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic unsigned int mc_hash(const struct macvlan_dev *vlan, 1523807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet const unsigned char *addr) 153cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet{ 154cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet u32 val = __get_unaligned_cpu32(addr + 2); 155cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 1563807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet val ^= macvlan_hash_mix(vlan); 157cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet return hash_32(val, MACVLAN_MC_FILTER_BITS); 158cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet} 159cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 161618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 162618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 163618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 168b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 169a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 1703807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet unsigned int hash; 171b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 172efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 173efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 174efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 175b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 176b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[i], hlist) { 177618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 178618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 179618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 1803807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet hash = mc_hash(vlan, eth->h_dest); 181cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (!test_bit(hash, vlan->mc_filter)) 182cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet continue; 183de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu 184de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu err = NET_RX_DROP; 185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 186de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu if (likely(nskb)) 187de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu err = macvlan_broadcast_one( 188de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu nskb, vlan, eth, 189412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu mode == MACVLAN_MODE_BRIDGE) ?: 190412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu netif_rx_ni(nskb); 191a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 192a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 194b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 195b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 196b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 197412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustatic void macvlan_process_broadcast(struct work_struct *w) 198b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 199412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct macvlan_port *port = container_of(w, struct macvlan_port, 200412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu bc_work); 201412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff *skb; 202412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff_head list; 203412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 204412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb_queue_head_init(&list); 205412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 206412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_lock_bh(&port->bc_queue.lock); 207412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb_queue_splice_tail_init(&port->bc_queue, &list); 208412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_unlock_bh(&port->bc_queue.lock); 209412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 210412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu while ((skb = __skb_dequeue(&list))) { 211412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; 212412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 213412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu rcu_read_lock(); 214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 215618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 216618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 217618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 218618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 219618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 220eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 221618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 222618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 223618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 224618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 225618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 226618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 227412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu else 228618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 229618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 230618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 231618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 232618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 233618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 234412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 235412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu rcu_read_unlock(); 236412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 237412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu kfree_skb(skb); 238412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu } 239412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu} 240412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 241412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustatic void macvlan_broadcast_enqueue(struct macvlan_port *port, 242412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff *skb) 243412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu{ 244e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu struct sk_buff *nskb; 245412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu int err = -ENOMEM; 246412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 247e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu nskb = skb_clone(skb, GFP_ATOMIC); 248e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu if (!nskb) 249412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu goto err; 250412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 251412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_lock(&port->bc_queue.lock); 252412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (skb_queue_len(&port->bc_queue) < skb->dev->tx_queue_len) { 253e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu __skb_queue_tail(&port->bc_queue, nskb); 254412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu err = 0; 255412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu } 256412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_unlock(&port->bc_queue.lock); 257412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 258412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (err) 259e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu goto free_nskb; 260412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 261412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu schedule_work(&port->bc_work); 262412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return; 263412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 264e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xufree_nskb: 265e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu kfree_skb(nskb); 266412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xuerr: 267412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu atomic_long_inc(&skb->dev->rx_dropped); 268412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu} 269412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 270412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu/* called under rcu_read_lock() from netif_receive_skb */ 271412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 272412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu{ 273412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct macvlan_port *port; 274412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff *skb = *pskb; 275412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct ethhdr *eth = eth_hdr(skb); 276412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *vlan; 277412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *src; 278412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct net_device *dev; 279412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu unsigned int len = 0; 280412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu int ret = NET_RX_DROP; 281412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 282412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu port = macvlan_port_get_rcu(skb->dev); 283412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (is_multicast_ether_addr(eth->h_dest)) { 284412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb = ip_check_defrag(skb, IP_DEFRAG_MACVLAN); 285412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (!skb) 286412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return RX_HANDLER_CONSUMED; 287412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu eth = eth_hdr(skb); 288412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu src = macvlan_hash_lookup(port, eth->h_source); 289412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (src && src->mode != MACVLAN_MODE_VEPA && 290412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu src->mode != MACVLAN_MODE_BRIDGE) { 291729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger /* forward to original port. */ 292729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger vlan = src; 293412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu ret = macvlan_broadcast_one(skb, vlan, eth, 0) ?: 294412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu netif_rx(skb); 295729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger goto out; 296729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger } 297729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger 298412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu MACVLAN_SKB_CB(skb)->src = src; 299412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu macvlan_broadcast_enqueue(port, skb); 300412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 3018a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 302b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 303b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 304eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 305233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko vlan = list_first_or_null_rcu(&port->vlans, 306233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko struct macvlan_dev, list); 307eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 308eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 309b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 3108a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 311b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 312b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 313b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 314b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 3158a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 316b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 317a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 318b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 319a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 320ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 321b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 322b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 324b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3252f6a1b6607fd6b0eb9501843a40e0c7555f37b4aVlad Yasevich ret = netif_rx(skb); 326ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 327ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 328ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 3298a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 330b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 331b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 332618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 333618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 334618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 335618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 336618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 337618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 338618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 339618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 340618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 341618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 342618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 343618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 344618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 345618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 346618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 347618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 348618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 349a37dd3332319260cce81ac91ce25fcc3a31de997David Ward /* send to lowerdev first for its network taps */ 350cb2d0f3e968bff7c6d262aca3e3ab8d4184e69b2David Ward dev_forward_skb(vlan->lowerdev, skb); 351618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 352618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 353618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 354618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 355618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 356618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 35759b9997baba5242997ddc7bd96b1391f5275a5a4David S. Miller skb->dev = vlan->lowerdev; 358618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 359618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 360618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 361688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb) 362688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 363688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#ifdef CONFIG_NET_POLL_CONTROLLER 364688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (vlan->netpoll) 365688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong netpoll_send_skb(vlan->netpoll, skb); 366688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#else 367688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong BUG(); 368688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#endif 369688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return NETDEV_TX_OK; 370688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 371688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 3720db901bd33f09b0dbf39d12261f689812e343c26stephen hemmingerstatic netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 3730db901bd33f09b0dbf39d12261f689812e343c26stephen hemminger struct net_device *dev) 374b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 375b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 376b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 377688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 378688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 379688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (unlikely(netpoll_tx_running(dev))) 380688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return macvlan_netpoll_send_skb(vlan, skb); 381b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 382a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 383a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend skb->dev = vlan->lowerdev; 384f663dd9aaf9ed124f25f0f8452edf238f087ad50Jason Wang ret = dev_queue_xmit_accel(skb, vlan->fwd_priv); 385a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } else { 386a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend ret = macvlan_queue_xmit(skb, dev); 387a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 388a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 3892d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 390cdf3e274cf1b36e9a2fef2d175cabc566af841b2Li RongQing struct vlan_pcpu_stats *pcpu_stats; 3912c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 3928ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 3938ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 3948ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 3958ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 3968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 3978ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 3988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 3998ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 400cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 403b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 4043b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 4053b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 407b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 408b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 409b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4100c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 4110c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 413b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4143b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 4153b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 4163b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 4173b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 4183b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 4193b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 4203b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 4213b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 422b13ba1b83f524732523db1079e56478b32c85c96Jason Wangstatic struct rtnl_link_ops macvlan_link_ops; 423b13ba1b83f524732523db1079e56478b32c85c96Jason Wang 424b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 425b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 426b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 428b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 429b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 430eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 431787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) { 432787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin err = dev_set_promiscuity(lowerdev, 1); 433787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin if (err < 0) 434787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin goto out; 435787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin } 436eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 437eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 438eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 439b13ba1b83f524732523db1079e56478b32c85c96Jason Wang if (lowerdev->features & NETIF_F_HW_L2FW_DOFFLOAD && 440b13ba1b83f524732523db1079e56478b32c85c96Jason Wang dev->rtnl_link_ops == &macvlan_link_ops) { 441a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = 442a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_add_station(lowerdev, dev); 443a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 444a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend /* If we get a NULL pointer back, or if we get an error 445a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend * then we should just fall through to the non accelerated path 446a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend */ 447a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (IS_ERR_OR_NULL(vlan->fwd_priv)) { 448a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 449f663dd9aaf9ed124f25f0f8452edf238f087ad50Jason Wang } else 450a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend return 0; 451a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 452a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 453f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 454f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 455f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 456f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 457a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 459b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 460b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 461b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 462b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 463b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 464b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 465eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 466eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 467f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 468b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 469b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 470b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 471a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 472b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 473a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 474a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, 475a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv); 476a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 477a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 478b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 479b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 480b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 481b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 482b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 483b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 484b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 485b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 486a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 487a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, 488a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv); 489a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 490a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend return 0; 491a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 492a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 493df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_unsync(lowerdev, dev); 494df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_mc_unsync(lowerdev, dev); 495df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 496eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 497df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) 498df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(lowerdev, -1); 499eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 500eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 501eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 502b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 503b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 504b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 505a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 506b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 507eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 508449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 509b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 510b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 511b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 512e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhongstatic int macvlan_sync_address(struct net_device *dev, unsigned char *addr) 513ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 514ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 515ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 516ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 517ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 518f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 519f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 520e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong ether_addr_copy(dev->dev_addr, addr); 521f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 522f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 523e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (macvlan_addr_busy(vlan->port, addr)) 524f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 525ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 526e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (!vlan->port->passthru) { 527e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong err = dev_uc_add(lowerdev, addr); 528e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (err) 529e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return err; 530ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 531e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong dev_uc_del(lowerdev, dev->dev_addr); 532e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong } 533f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 534e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong macvlan_hash_change_addr(vlan, addr); 535f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 536ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 537ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 538ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 539e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhongstatic int macvlan_set_mac_address(struct net_device *dev, void *p) 540e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong{ 541e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 542e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong struct sockaddr *addr = p; 543e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 544e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (!is_valid_ether_addr(addr->sa_data)) 545e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return -EADDRNOTAVAIL; 546e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 547e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 548e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong dev_set_mac_address(vlan->lowerdev, addr); 549e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return 0; 550e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong } 551e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 552e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return macvlan_sync_address(dev, addr->sa_data); 553e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong} 554e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 555b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 556b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 557b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 558b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 559b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 560bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen if (dev->flags & IFF_UP) { 561bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen if (change & IFF_ALLMULTI) 562bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 563bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen } 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 565b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 566df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabendstatic void macvlan_set_mac_lists(struct net_device *dev) 567b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 568b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 569b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 570cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { 571cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_fill(vlan->mc_filter, MACVLAN_MC_FILTER_SZ); 572cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } else { 573cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet struct netdev_hw_addr *ha; 574cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); 575cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 576cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); 577cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet netdev_for_each_mc_addr(ha, dev) { 5783807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, ha->addr), filter); 579cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 580d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 5813807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, dev->broadcast), filter); 582d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 583cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_copy(vlan->mc_filter, filter, MACVLAN_MC_FILTER_SZ); 584cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 585df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_sync(vlan->lowerdev, dev); 586b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 587b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 589b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 590b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 591b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 592b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 593b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 594b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 595b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 596b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 597b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 598b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 599b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 604b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 605cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 606b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 6078b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich#define ALWAYS_ON_FEATURES \ 6088b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich (NETIF_F_SG | NETIF_F_GEN_CSUM | NETIF_F_GSO_SOFTWARE | NETIF_F_LLTX) 6098b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 6138d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ 61428d2b136ca6c7bf7173a43a90f747ecda5b0520dPatrick McHardy NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 618b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 619c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevichstatic int macvlan_get_nest_level(struct net_device *dev) 620c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich{ 621c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich return ((struct macvlan_dev *)netdev_priv(dev))->nest_level; 622c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich} 623c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich 624e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 625e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 626e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 627c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 628c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 629c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 630c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 631c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 632c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 633c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 634c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich lockdep_set_class_and_subclass(&dev->addr_list_lock, 635c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich &macvlan_netdev_addr_lock_key, 636c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich macvlan_get_nest_level(dev)); 637e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 638c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 639c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 644b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 645b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 646b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 647b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 6488b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich dev->features |= ALWAYS_ON_FEATURES; 6498c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 650b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 651ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 652b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 653c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 654c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 6551c213bd24ad04f4430031d20d740d7783162b099WANG Cong vlan->pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); 6568ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 657fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 658fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 659b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 660b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 661b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 662fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 663fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 664fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 665d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 666fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 6678ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 668d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 669a188a54d11629bef2169052297e61f3767ca8ce5dingtianhong if (MACVLAN_PORT_IS_EMPTY(port)) 670d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 671fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 672fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 67328172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 67428172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 675fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 676fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 677fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 6788ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 679cdf3e274cf1b36e9a2fef2d175cabc566af841b2Li RongQing struct vlan_pcpu_stats *p; 6808ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 6818ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 682bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 683fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 684fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 685fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 6868ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 687bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 68857a7744e09867ebcfa0ccf1d6d529caa7728d552Eric W. Biederman start = u64_stats_fetch_begin_irq(&p->syncp); 689bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 690bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 691bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 6928ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 6938ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 69457a7744e09867ebcfa0ccf1d6d529caa7728d552Eric W. Biederman } while (u64_stats_fetch_retry_irq(&p->syncp, start)); 6958ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 6968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 6978ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 6988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 6998ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 7008ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 7018ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 7028ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 7038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 7048ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 7058ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 706fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 7078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 7088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 7098ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 710fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 711fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 712fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 713fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 7148e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_add_vid(struct net_device *dev, 71580d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 7168d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 7178d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 7188d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 7198d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 72080d5c3689b886308247da295a228a54df49a44f6Patrick McHardy return vlan_vid_add(lowerdev, proto, vid); 7218d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 7228d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 7238e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_kill_vid(struct net_device *dev, 72480d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 7258d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 7268d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 7278d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 7288d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 72980d5c3689b886308247da295a228a54df49a44f6Patrick McHardy vlan_vid_del(lowerdev, proto, vid); 7308e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirko return 0; 7318d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 7328d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 733edc7d57327bd08bfd04f41531d49b176369db218stephen hemmingerstatic int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 734df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 7356b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr, 736df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend u16 flags) 737df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 738df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 739df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 740df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 741df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 742df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 743df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 744ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter if (flags & NLM_F_REPLACE) 745ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter return -EOPNOTSUPP; 746ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter 747df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 748df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_add_excl(dev, addr); 749df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 750df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_add_excl(dev, addr); 751df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 752df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 753df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 754df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 7551690be63a27b20ae65c792729a44f5970561ffa4Vlad Yasevichstatic int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 756df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 7576b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr) 758df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 759df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 760df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 761df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 762df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 763df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 764df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 765df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 766df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_del(dev, addr); 767df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 768df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_del(dev, addr); 769df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 770df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 771df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 772df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 773b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 774b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 775b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 7767826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); 7777826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); 778b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 779b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 7809edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 7819edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 7829edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 7839edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 7844bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko 7854bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko return __ethtool_get_settings(vlan->lowerdev, cmd); 7869edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 7879edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 7882be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevichstatic netdev_features_t macvlan_fix_features(struct net_device *dev, 7892be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich netdev_features_t features) 7902be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich{ 7912be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich struct macvlan_dev *vlan = netdev_priv(dev); 792797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal netdev_features_t mask; 7932be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 794797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features |= NETIF_F_ALL_FOR_ALL; 795797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features &= (vlan->set_features | ~MACVLAN_FEATURES); 796797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal mask = features; 797797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal 798797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features = netdev_increment_features(vlan->lowerdev->features, 799797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features, 800797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal mask); 8018b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich features |= ALWAYS_ON_FEATURES; 802797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal 803797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal return features; 8042be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich} 8052be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 806688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#ifdef CONFIG_NET_POLL_CONTROLLER 807688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic void macvlan_dev_poll_controller(struct net_device *dev) 808688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 809688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return; 810688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 811688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 812688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic int macvlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) 813688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 814688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 815688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct net_device *real_dev = vlan->lowerdev; 816688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct netpoll *netpoll; 817688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong int err = 0; 818688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 819688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); 820688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong err = -ENOMEM; 821688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (!netpoll) 822688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong goto out; 823688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 824688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong err = __netpoll_setup(netpoll, real_dev); 825688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (err) { 826688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong kfree(netpoll); 827688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong goto out; 828688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong } 829688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 830688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong vlan->netpoll = netpoll; 831688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 832688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongout: 833688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return err; 834688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 835688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 836688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic void macvlan_dev_netpoll_cleanup(struct net_device *dev) 837688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 838688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 839688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct netpoll *netpoll = vlan->netpoll; 840688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 841688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (!netpoll) 842688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return; 843688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 844688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong vlan->netpoll = NULL; 845688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 846688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong __netpoll_free_async(netpoll); 847688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 848688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#endif /* CONFIG_NET_POLL_CONTROLLER */ 849688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 850b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 851b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 8529edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 853b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 854b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 855b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 85654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 85754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 858fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 85954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 86054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 861008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 86254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 8632be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich .ndo_fix_features = macvlan_fix_features, 86454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 86554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 866df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_set_rx_mode = macvlan_set_mac_lists, 867bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 86854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 8698d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, 8708d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, 871df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_add = macvlan_fdb_add, 872df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_del = macvlan_fdb_del, 873df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_dump = ndo_dflt_fdb_dump, 874c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich .ndo_get_lock_subclass = macvlan_get_nest_level, 875688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#ifdef CONFIG_NET_POLL_CONTROLLER 876688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong .ndo_poll_controller = macvlan_dev_poll_controller, 877688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong .ndo_netpoll_setup = macvlan_dev_netpoll_setup, 878688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong .ndo_netpoll_cleanup = macvlan_dev_netpoll_cleanup, 879688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#endif 88054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 88154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 8828a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 883b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 884b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 885b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 886550fd08c2cebad61c548def135f67aba284c6162Neil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 88787ab7f6f2874f1115817e394a7ed2dea1c72549eVlad Yasevich dev->priv_flags |= IFF_UNICAST_FLT; 88854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 889b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 8907174012955d0e545e5253192e2cd37fedbc405f9Lutz Jaenicke dev->header_ops = &macvlan_hard_header_ops; 891b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 8928a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 8938a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 8948a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 8958a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 8968a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 8978a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 898b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 899b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 900b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 901b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 902b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 903b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 904b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 905ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 906b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 907b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 908b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 909b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 910b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 911b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 912b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 913b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 914eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 915b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 916b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 917b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 918b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 919ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 920412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb_queue_head_init(&port->bc_queue); 921412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu INIT_WORK(&port->bc_work, macvlan_process_broadcast); 922412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 923a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 924a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 925ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 926d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 927d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 928ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 929b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 930b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 931b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 932b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 933e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet struct macvlan_port *port = macvlan_port_get_rtnl(dev); 934b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 935412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu cancel_work_sync(&port->bc_work); 936a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 937ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 9386e070aecd9e304264a6b8655f49aa7e6db0e55f2Lai Jiangshan kfree_rcu(port, rcu); 939b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 940b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 941b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 942b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 943b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 944b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 945b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 946b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 947b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 948b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 94927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 9501512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin if (data && data[IFLA_MACVLAN_FLAGS] && 9511512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin nla_get_u16(data[IFLA_MACVLAN_FLAGS]) & ~MACVLAN_FLAG_NOPROMISC) 9521512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin return -EINVAL; 9531512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin 95427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 95527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 95627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 95727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 95827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 959eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 96027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 96127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 96227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 96327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 96427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 965b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 966b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 967b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 968fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 9692f6a1b6607fd6b0eb9501843a40e0c7555f37b4aVlad Yasevich struct nlattr *tb[], struct nlattr *data[]) 970b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 971b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 972b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 973b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 974b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 975b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 976b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 977b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 978b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 97981adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 980b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 981b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 982b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 983d70f2cf520cf8c86c6b467fc5dcea524ec51dc2fKevin Wallace /* When creating macvlans or macvtaps on top of other macvlans - use 984b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 985a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 986d70f2cf520cf8c86c6b467fc5dcea524ec51dc2fKevin Wallace if (netif_is_macvlan(lowerdev)) 987d70f2cf520cf8c86c6b467fc5dcea524ec51dc2fKevin Wallace lowerdev = macvlan_dev_real_dev(lowerdev); 988a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 989b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 990b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 991b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 992b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 993b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 994b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 9957ce5d222190cb3ce3ae88bafde7c4fa52a5103e0Danny Kukawka eth_hw_addr_random(dev); 996b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 997a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 998b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 999b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 1000b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 1001b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1002e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(lowerdev); 1003b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1004eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 1005eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 1006eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 1007eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 1008b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 1009b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 1010b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 10112be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich vlan->set_features = MACVLAN_FEATURES; 1012c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich vlan->nest_level = dev_get_nest_level(lowerdev, netif_is_macvlan) + 1; 1013b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 101427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 101527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 101627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 101727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 1018df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) 1019df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 1020df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 1021eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 1022a188a54d11629bef2169052297e61f3767ca8ce5dingtianhong if (!MACVLAN_PORT_IS_EMPTY(port)) 1023eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 1024eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 10258b98604e398418b9f1a1e44ac79fbbc134818f50Bjørn Mork eth_hw_addr_inherit(dev, lowerdev); 1026eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 1027eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 102847d4ab91e4472723f181075c81627374ca86816cJohn Fastabend err = register_netdevice(dev); 102947d4ab91e4472723f181075c81627374ca86816cJohn Fastabend if (err < 0) 103047d4ab91e4472723f181075c81627374ca86816cJohn Fastabend goto destroy_port; 103147d4ab91e4472723f181075c81627374ca86816cJohn Fastabend 1032a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend dev->priv_flags |= IFF_MACVLAN; 10337cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko err = netdev_upper_dev_link(lowerdev, dev); 10347cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko if (err) 1035da37705cef30841616ed644ff33455bbc7374db0Cong Wang goto unregister_netdev; 1036b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1037233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_add_tail_rcu(&vlan->list, &port->vlans); 1038fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 1039f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 1040b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 1041f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 1042da37705cef30841616ed644ff33455bbc7374db0Cong Wangunregister_netdev: 1043da37705cef30841616ed644ff33455bbc7374db0Cong Wang unregister_netdevice(dev); 1044f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 1045a188a54d11629bef2169052297e61f3767ca8ce5dingtianhong if (MACVLAN_PORT_IS_EMPTY(port)) 1046f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 1047f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 1048f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 1049b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1050fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 1051b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1052fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 1053fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 1054fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 10552f6a1b6607fd6b0eb9501843a40e0c7555f37b4aVlad Yasevich return macvlan_common_newlink(src_net, dev, tb, data); 1056fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 1057fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1058fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 1059b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1060b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 1061b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1062233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_del_rcu(&vlan->list); 106323289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 10647cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko netdev_upper_dev_unlink(vlan->lowerdev, dev); 1065b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1066fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 1067b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 106827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 106927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 107027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 107127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 1072266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin enum macvlan_mode mode; 1073266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin bool set_mode = false; 1074266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin 1075266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Validate mode, but don't set yet: setting flags may fail. */ 1076266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (data && data[IFLA_MACVLAN_MODE]) { 1077266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin set_mode = true; 1078266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 1079266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Passthrough mode can't be set or cleared dynamically */ 1080266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if ((mode == MACVLAN_MODE_PASSTHRU) != 1081266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin (vlan->mode == MACVLAN_MODE_PASSTHRU)) 1082266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin return -EINVAL; 1083266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin } 108499ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 1085df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) { 1086df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 1087df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; 108899ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (vlan->port->passthru && promisc) { 108999ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin int err; 109099ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 109199ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (flags & MACVLAN_FLAG_NOPROMISC) 109299ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, -1); 109399ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin else 109499ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, 1); 109599ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (err < 0) 109699ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin return err; 109799ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin } 1098df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = flags; 1099df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend } 1100266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (set_mode) 1101266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin vlan->mode = mode; 110227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 110327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 110427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 110527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 110627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 110701fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet return (0 110801fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(4) /* IFLA_MACVLAN_MODE */ 110901fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ 111001fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet ); 111127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 111227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 111327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 111427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 111527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 111627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 111727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 1118ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) 1119ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller goto nla_put_failure; 1120df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) 1121df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend goto nla_put_failure; 112227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 112327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 112427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 112527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 112627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 112727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 112827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 1129df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 1130df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, 113127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 113227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 1133fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 1134fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 1135fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 1136fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 1137fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 1138fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 1139fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 1140fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 1141fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 1142fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 1143fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1144fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 1145fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 1146fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 1147fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1148fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 1149b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 11508a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 1151b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 1152b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 1153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 1154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 1156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 1157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1158351638e7deeed2ec8ce451b53d33921b3da68f83Jiri Pirko struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 1160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 1161226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 1162b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1163a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 1164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 1165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1166e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(dev); 1167a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 1168b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 1169b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 1170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 1171fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 1172fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 1173b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 1174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 1175b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 11768c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 1177797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal netdev_update_features(vlan->dev); 1178b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1179b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 11803763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong case NETDEV_CHANGEMTU: 11813763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong list_for_each_entry(vlan, &port->vlans, list) { 11823763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong if (vlan->dev->mtu <= dev->mtu) 11833763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong continue; 11843763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong dev_set_mtu(vlan->dev, dev->mtu); 11853763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong } 11863763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong break; 1187e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong case NETDEV_CHANGEADDR: 1188e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (!port->passthru) 1189e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return NOTIFY_DONE; 1190e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 1191e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong vlan = list_first_entry_or_null(&port->vlans, 1192e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong struct macvlan_dev, 1193e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong list); 1194e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 1195e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (macvlan_sync_address(vlan->dev, dev->dev_addr)) 1196e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return NOTIFY_BAD; 1197e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 1198e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong break; 1199b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 12003b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 12013b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 12023b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 12033b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 1204b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 1205226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 1206226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 1207226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 1208b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 12091c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 12101c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 12111c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 1212b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 1214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1215b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1216b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 1217b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 1218b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 1219b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1220b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 1221b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1222b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 1223b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1224b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 1225b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1226fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 1227b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 1228b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 1229b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 1230b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 1231b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1232b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 1233b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1234b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1235b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 1236b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1237b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 1238b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1239b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1240b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1241b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 1242b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 1243b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1244b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 1245b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 1246b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 1247b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 1248