macvlan.c revision 0d0162e7a33d3710b9604e7c68c0f31f5c457428
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; 485e3c516b512c0f8f18359413b04918f6347f67e7David S. Miller int count; 49b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 50b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 51412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustruct macvlan_skb_cb { 52412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *src; 53412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu}; 54412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 55412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu#define MACVLAN_SKB_CB(__skb) ((struct macvlan_skb_cb *)&((__skb)->cb[0])) 56412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 57d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biedermanstatic void macvlan_port_destroy(struct net_device *dev); 58d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 59e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) 60e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 61e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rcu_dereference(dev->rx_handler_data); 62e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 63e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 64e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) 65e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 66e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rtnl_dereference(dev->rx_handler_data); 67e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 68e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 69a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 70a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 71b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 72b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 73b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 74b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 75b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 76b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[addr[5]], hlist) { 77a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) 78b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 79b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 80b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 81b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 82b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 91449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 94449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 95449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 101449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 106f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 108f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 109f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 110f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 111f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 112f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 113f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 114f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 115f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 116a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(port->dev->dev_addr, addr)) 117f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 118f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 119f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 120f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 121f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 122f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 123f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 124f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 125a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 126fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 127fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 128618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 129a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 130fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 131a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 132618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 133412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return __dev_forward_skb(dev, skb); 134618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 135a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 136a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) 137a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 138a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 139a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 140a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 141412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return 0; 142a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 143a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 1443807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic u32 macvlan_hash_mix(const struct macvlan_dev *vlan) 1453807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet{ 1463807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); 1473807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet} 1483807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1493807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1503807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic unsigned int mc_hash(const struct macvlan_dev *vlan, 1513807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet const unsigned char *addr) 152cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet{ 153cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet u32 val = __get_unaligned_cpu32(addr + 2); 154cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 1553807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet val ^= macvlan_hash_mix(vlan); 156cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet return hash_32(val, MACVLAN_MC_FILTER_BITS); 157cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet} 158cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 160618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 161618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 162618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 163b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 168a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 1693807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet unsigned int hash; 170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 171efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 172efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 173efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 175b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[i], hlist) { 176618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 177618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 178618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 1793807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet hash = mc_hash(vlan, eth->h_dest); 180cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (!test_bit(hash, vlan->mc_filter)) 181cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet continue; 182de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu 183de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu err = NET_RX_DROP; 184b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 185de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu if (likely(nskb)) 186de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu err = macvlan_broadcast_one( 187de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu nskb, vlan, eth, 188412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu mode == MACVLAN_MODE_BRIDGE) ?: 189412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu netif_rx_ni(nskb); 190a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 191a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 192b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 194b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 195b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 196412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustatic void macvlan_process_broadcast(struct work_struct *w) 197b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 198412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct macvlan_port *port = container_of(w, struct macvlan_port, 199412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu bc_work); 200412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff *skb; 201412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff_head list; 202412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 203412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb_queue_head_init(&list); 204412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 205412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_lock_bh(&port->bc_queue.lock); 206412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb_queue_splice_tail_init(&port->bc_queue, &list); 207412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_unlock_bh(&port->bc_queue.lock); 208412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 209412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu while ((skb = __skb_dequeue(&list))) { 210412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; 211412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 212412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu rcu_read_lock(); 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 214618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 215618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 216618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 217618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 218618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 219eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 220618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 221618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 222618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 223618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 224618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 225618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 226412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu else 227618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 228618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 229618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 230618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 231618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 232618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 233412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 234412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu rcu_read_unlock(); 235412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 236412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu kfree_skb(skb); 237412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu } 238412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu} 239412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 240412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustatic void macvlan_broadcast_enqueue(struct macvlan_port *port, 241412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff *skb) 242412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu{ 243e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu struct sk_buff *nskb; 244412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu int err = -ENOMEM; 245412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 246e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu nskb = skb_clone(skb, GFP_ATOMIC); 247e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu if (!nskb) 248412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu goto err; 249412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 250412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_lock(&port->bc_queue.lock); 251412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (skb_queue_len(&port->bc_queue) < skb->dev->tx_queue_len) { 252e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu __skb_queue_tail(&port->bc_queue, nskb); 253412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu err = 0; 254412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu } 255412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu spin_unlock(&port->bc_queue.lock); 256412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 257412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (err) 258e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu goto free_nskb; 259412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 260412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu schedule_work(&port->bc_work); 261412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return; 262412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 263e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xufree_nskb: 264e676f197a7a9aae9c75b0d9acc97e07de07dd1f0Herbert Xu kfree_skb(nskb); 265412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xuerr: 266412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu atomic_long_inc(&skb->dev->rx_dropped); 267412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu} 268412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 269412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu/* called under rcu_read_lock() from netif_receive_skb */ 270412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xustatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 271412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu{ 272412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct macvlan_port *port; 273412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct sk_buff *skb = *pskb; 274412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct ethhdr *eth = eth_hdr(skb); 275412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *vlan; 276412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu const struct macvlan_dev *src; 277412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu struct net_device *dev; 278412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu unsigned int len = 0; 279412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu int ret = NET_RX_DROP; 280412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 281412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu port = macvlan_port_get_rcu(skb->dev); 282412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (is_multicast_ether_addr(eth->h_dest)) { 283412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb = ip_check_defrag(skb, IP_DEFRAG_MACVLAN); 284412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (!skb) 285412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu return RX_HANDLER_CONSUMED; 286412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu eth = eth_hdr(skb); 287412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu src = macvlan_hash_lookup(port, eth->h_source); 288412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu if (src && src->mode != MACVLAN_MODE_VEPA && 289412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu src->mode != MACVLAN_MODE_BRIDGE) { 290729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger /* forward to original port. */ 291729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger vlan = src; 292412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu ret = macvlan_broadcast_one(skb, vlan, eth, 0) ?: 293412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu netif_rx(skb); 294729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger goto out; 295729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger } 296729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger 297412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu MACVLAN_SKB_CB(skb)->src = src; 298412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu macvlan_broadcast_enqueue(port, skb); 299412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 3008a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 301b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 302b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 303eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 304233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko vlan = list_first_or_null_rcu(&port->vlans, 305233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko struct macvlan_dev, list); 306eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 307eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 308b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 3098a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 310b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 311b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 312b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 313b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 3148a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 315b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 316a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 317b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 318a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 319ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 320b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 321b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 322b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3242f6a1b6607fd6b0eb9501843a40e0c7555f37b4aVlad Yasevich ret = netif_rx(skb); 325ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 326ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 327ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 3288a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 329b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 330b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 331618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 332618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 333618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 334618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 335618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 336618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 337618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 338618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 339618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 340618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 341618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 342618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 343618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 344618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 345618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 346618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 347618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 348a37dd3332319260cce81ac91ce25fcc3a31de997David Ward /* send to lowerdev first for its network taps */ 349cb2d0f3e968bff7c6d262aca3e3ab8d4184e69b2David Ward dev_forward_skb(vlan->lowerdev, skb); 350618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 351618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 352618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 353618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 354618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 355618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 35659b9997baba5242997ddc7bd96b1391f5275a5a4David S. Miller skb->dev = vlan->lowerdev; 357618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 358618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 359618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 360688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb) 361688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 362688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#ifdef CONFIG_NET_POLL_CONTROLLER 363688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (vlan->netpoll) 364688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong netpoll_send_skb(vlan->netpoll, skb); 365688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#else 366688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong BUG(); 367688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#endif 368688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return NETDEV_TX_OK; 369688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 370688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 3710db901bd33f09b0dbf39d12261f689812e343c26stephen hemmingerstatic netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 3720db901bd33f09b0dbf39d12261f689812e343c26stephen hemminger struct net_device *dev) 373b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 374b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 375b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 376688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 377688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 378688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (unlikely(netpoll_tx_running(dev))) 379688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return macvlan_netpoll_send_skb(vlan, skb); 380b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 381a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 382a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend skb->dev = vlan->lowerdev; 383f663dd9aaf9ed124f25f0f8452edf238f087ad50Jason Wang ret = dev_queue_xmit_accel(skb, vlan->fwd_priv); 384a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } else { 385a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend ret = macvlan_queue_xmit(skb, dev); 386a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 387a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 3882d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 389cdf3e274cf1b36e9a2fef2d175cabc566af841b2Li RongQing struct vlan_pcpu_stats *pcpu_stats; 3902c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 3918ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 3928ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 3938ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 3948ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 3958ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 3968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 3978ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 3988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 399cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 4033b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 4043b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 405b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 407b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 408b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4090c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 4100c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 411b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 4133b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 4143b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 4153b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 4163b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 4173b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 4183b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 4193b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 4203b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 421b13ba1b83f524732523db1079e56478b32c85c96Jason Wangstatic struct rtnl_link_ops macvlan_link_ops; 422b13ba1b83f524732523db1079e56478b32c85c96Jason Wang 423b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 424b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 425b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 426b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 428b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 429eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 430787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) { 431787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin err = dev_set_promiscuity(lowerdev, 1); 432787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin if (err < 0) 433787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin goto out; 434787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin } 435eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 436eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 437eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 438b13ba1b83f524732523db1079e56478b32c85c96Jason Wang if (lowerdev->features & NETIF_F_HW_L2FW_DOFFLOAD && 439b13ba1b83f524732523db1079e56478b32c85c96Jason Wang dev->rtnl_link_ops == &macvlan_link_ops) { 440a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = 441a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_add_station(lowerdev, dev); 442a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 443a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend /* If we get a NULL pointer back, or if we get an error 444a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend * then we should just fall through to the non accelerated path 445a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend */ 446a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (IS_ERR_OR_NULL(vlan->fwd_priv)) { 447a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 448f663dd9aaf9ed124f25f0f8452edf238f087ad50Jason Wang } else 449a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend return 0; 450a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 451a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 452f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 453f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 454f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 455f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 456a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 457b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 458b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 459b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 460b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 461b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 462b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 463b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 464eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 465eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 466f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 467b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 468b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 469b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 470a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 471b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 472a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 473a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, 474a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv); 475a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 476a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 477b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 478b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 479b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 480b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 481b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 482b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 483b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 484b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 485a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 486a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, 487a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv); 488a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 489a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend return 0; 490a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 491a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 492df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_unsync(lowerdev, dev); 493df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_mc_unsync(lowerdev, dev); 494df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 495eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 496df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) 497df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(lowerdev, -1); 498eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 499eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 500eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 501b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 502b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 503b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 504a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 505b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 506eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 507449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 508b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 509b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 510b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 511e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhongstatic int macvlan_sync_address(struct net_device *dev, unsigned char *addr) 512ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 513ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 514ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 515ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 516ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 517f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 518f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 519e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong ether_addr_copy(dev->dev_addr, addr); 520f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 521f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 522e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (macvlan_addr_busy(vlan->port, addr)) 523f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 524ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 525e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (!vlan->port->passthru) { 526e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong err = dev_uc_add(lowerdev, addr); 527e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (err) 528e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return err; 529ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 530e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong dev_uc_del(lowerdev, dev->dev_addr); 531e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong } 532f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 533e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong macvlan_hash_change_addr(vlan, addr); 534f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 535ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 536ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 537ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 538e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhongstatic int macvlan_set_mac_address(struct net_device *dev, void *p) 539e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong{ 540e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 541e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong struct sockaddr *addr = p; 542e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 543e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (!is_valid_ether_addr(addr->sa_data)) 544e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return -EADDRNOTAVAIL; 545e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 546e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 547e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong dev_set_mac_address(vlan->lowerdev, addr); 548e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return 0; 549e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong } 550e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 551e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return macvlan_sync_address(dev, addr->sa_data); 552e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong} 553e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 554b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 555b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 556b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 557b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 558b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 559bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen if (dev->flags & IFF_UP) { 560bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen if (change & IFF_ALLMULTI) 561bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 562bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556Peter Christensen } 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 565df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabendstatic void macvlan_set_mac_lists(struct net_device *dev) 566b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 567b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 568b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 569cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { 570cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_fill(vlan->mc_filter, MACVLAN_MC_FILTER_SZ); 571cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } else { 572cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet struct netdev_hw_addr *ha; 573cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); 574cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 575cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); 576cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet netdev_for_each_mc_addr(ha, dev) { 5773807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, ha->addr), filter); 578cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 579d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 5803807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, dev->broadcast), filter); 581d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 582cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_copy(vlan->mc_filter, filter, MACVLAN_MC_FILTER_SZ); 583cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 584df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_sync(vlan->lowerdev, dev); 585b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 586b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 587b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 589b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 590b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 591b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 592b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 593b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 594b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 595b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 596b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 597b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 598b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 599b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 602b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 604cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 605b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 6068b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich#define ALWAYS_ON_FEATURES \ 6078b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich (NETIF_F_SG | NETIF_F_GEN_CSUM | NETIF_F_GSO_SOFTWARE | NETIF_F_LLTX) 6088b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 6128d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ 61328d2b136ca6c7bf7173a43a90f747ecda5b0520dPatrick McHardy NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) 614b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 618c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevichstatic int macvlan_get_nest_level(struct net_device *dev) 619c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich{ 620c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich return ((struct macvlan_dev *)netdev_priv(dev))->nest_level; 621c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich} 622c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich 623e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 624e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 625e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 626c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 627c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 628c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 629c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 630c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 631c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 632c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 633c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich lockdep_set_class_and_subclass(&dev->addr_list_lock, 634c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich &macvlan_netdev_addr_lock_key, 635c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich macvlan_get_nest_level(dev)); 636e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 637c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 638c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 642b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 643b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 644b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 645b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 646b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 6478b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich dev->features |= ALWAYS_ON_FEATURES; 648081e83a78db9b0ae1f5eabc2dedecc865f509b98Vlad Yasevich dev->vlan_features = lowerdev->vlan_features & MACVLAN_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 6695e3c516b512c0f8f18359413b04918f6347f67e7David S. Miller port->count -= 1; 6705e3c516b512c0f8f18359413b04918f6347f67e7David S. Miller if (!port->count) 671d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 672fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 673fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 67428172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 67528172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 676fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 677fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 678fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 6798ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 680cdf3e274cf1b36e9a2fef2d175cabc566af841b2Li RongQing struct vlan_pcpu_stats *p; 6818ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 6828ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 683bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 684fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 685fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 686fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 6878ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 688bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 68957a7744e09867ebcfa0ccf1d6d529caa7728d552Eric W. Biederman start = u64_stats_fetch_begin_irq(&p->syncp); 690bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 691bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 692bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 6938ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 6948ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 69557a7744e09867ebcfa0ccf1d6d529caa7728d552Eric W. Biederman } while (u64_stats_fetch_retry_irq(&p->syncp, start)); 6968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 6978ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 6988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 6998ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 7008ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 7018ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 7028ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 7038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 7048ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 7058ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 7068ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 707fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 7088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 7098ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 7108ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 711fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 712fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 713fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 714fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 7158e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_add_vid(struct net_device *dev, 71680d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 7178d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 7188d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 7198d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 7208d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 72180d5c3689b886308247da295a228a54df49a44f6Patrick McHardy return vlan_vid_add(lowerdev, proto, vid); 7228d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 7238d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 7248e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_kill_vid(struct net_device *dev, 72580d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 7268d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 7278d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 7288d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 7298d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 73080d5c3689b886308247da295a228a54df49a44f6Patrick McHardy vlan_vid_del(lowerdev, proto, vid); 7318e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirko return 0; 7328d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 7338d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 734edc7d57327bd08bfd04f41531d49b176369db218stephen hemmingerstatic int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 735df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 7366b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr, 737df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend u16 flags) 738df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 739df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 740df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 741df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 7428a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich /* Support unicast filter only on passthru devices. 7438a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich * Multicast filter should be allowed on all devices. 7448a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich */ 7458a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich if (!vlan->port->passthru && is_unicast_ether_addr(addr)) 746df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 747df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 748ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter if (flags & NLM_F_REPLACE) 749ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter return -EOPNOTSUPP; 750ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter 751df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 752df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_add_excl(dev, addr); 753df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 754df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_add_excl(dev, addr); 755df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 756df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 757df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 758df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 7591690be63a27b20ae65c792729a44f5970561ffa4Vlad Yasevichstatic int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 760df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 7616b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr) 762df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 763df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 764df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 765df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 7668a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich /* Support unicast filter only on passthru devices. 7678a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich * Multicast filter should be allowed on all devices. 7688a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich */ 7698a50f11c3b176d7a1df8cd5e29cbe965905e51eeVlad Yasevich if (!vlan->port->passthru && is_unicast_ether_addr(addr)) 770df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 771df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 772df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 773df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_del(dev, addr); 774df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 775df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_del(dev, addr); 776df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 777df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 778df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 779df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 780b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 781b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 782b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 7837826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); 7847826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); 785b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 786b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 7879edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 7889edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 7899edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 7909edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 7914bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko 7924bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko return __ethtool_get_settings(vlan->lowerdev, cmd); 7939edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 7949edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 7952be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevichstatic netdev_features_t macvlan_fix_features(struct net_device *dev, 7962be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich netdev_features_t features) 7972be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich{ 7982be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich struct macvlan_dev *vlan = netdev_priv(dev); 799797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal netdev_features_t mask; 8002be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 801797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features |= NETIF_F_ALL_FOR_ALL; 802797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features &= (vlan->set_features | ~MACVLAN_FEATURES); 803797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal mask = features; 804797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal 805797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features = netdev_increment_features(vlan->lowerdev->features, 806797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features, 807797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal mask); 8088b4703e9bd1172a5f8244276ebb94302e6153e26Vlad Yasevich features |= ALWAYS_ON_FEATURES; 8090d0162e7a33d3710b9604e7c68c0f31f5c457428Francesco Ruggeri features &= ~NETIF_F_NETNS_LOCAL; 810797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal 811797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal return features; 8122be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich} 8132be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 814688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#ifdef CONFIG_NET_POLL_CONTROLLER 815688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic void macvlan_dev_poll_controller(struct net_device *dev) 816688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 817688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return; 818688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 819688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 820688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic int macvlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) 821688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 822688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 823688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct net_device *real_dev = vlan->lowerdev; 824688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct netpoll *netpoll; 825688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong int err = 0; 826688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 827688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); 828688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong err = -ENOMEM; 829688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (!netpoll) 830688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong goto out; 831688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 832688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong err = __netpoll_setup(netpoll, real_dev); 833688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (err) { 834688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong kfree(netpoll); 835688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong goto out; 836688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong } 837688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 838688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong vlan->netpoll = netpoll; 839688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 840688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongout: 841688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return err; 842688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 843688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 844688cea83f4396fa98b77a126ed278b89daccccdcdingtianhongstatic void macvlan_dev_netpoll_cleanup(struct net_device *dev) 845688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong{ 846688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct macvlan_dev *vlan = netdev_priv(dev); 847688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong struct netpoll *netpoll = vlan->netpoll; 848688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 849688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong if (!netpoll) 850688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong return; 851688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 852688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong vlan->netpoll = NULL; 853688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 854688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong __netpoll_free_async(netpoll); 855688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong} 856688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#endif /* CONFIG_NET_POLL_CONTROLLER */ 857688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong 858b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 859b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 8609edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 861b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 862b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 863b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 86454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 86554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 866fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 86754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 86854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 869008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 87054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 8712be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich .ndo_fix_features = macvlan_fix_features, 87254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 87354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 874df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_set_rx_mode = macvlan_set_mac_lists, 875bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 87654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 8778d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, 8788d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, 879df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_add = macvlan_fdb_add, 880df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_del = macvlan_fdb_del, 881df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_dump = ndo_dflt_fdb_dump, 882c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich .ndo_get_lock_subclass = macvlan_get_nest_level, 883688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#ifdef CONFIG_NET_POLL_CONTROLLER 884688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong .ndo_poll_controller = macvlan_dev_poll_controller, 885688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong .ndo_netpoll_setup = macvlan_dev_netpoll_setup, 886688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong .ndo_netpoll_cleanup = macvlan_dev_netpoll_cleanup, 887688cea83f4396fa98b77a126ed278b89daccccdcdingtianhong#endif 88854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 88954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 8908a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 891b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 892b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 893b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 894550fd08c2cebad61c548def135f67aba284c6162Neil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 89587ab7f6f2874f1115817e394a7ed2dea1c72549eVlad Yasevich dev->priv_flags |= IFF_UNICAST_FLT; 89654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 897b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 8987174012955d0e545e5253192e2cd37fedbc405f9Lutz Jaenicke dev->header_ops = &macvlan_hard_header_ops; 899b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 9008a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 9018a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 9028a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 9038a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 9048a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 9058a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 906b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 907b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 908b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 909b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 910b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 911b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 912b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 913ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 914b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 915b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 916b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 917b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 918b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 919b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 920b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 921b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 922eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 923b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 924b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 925b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 926b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 927ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 928412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu skb_queue_head_init(&port->bc_queue); 929412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu INIT_WORK(&port->bc_work, macvlan_process_broadcast); 930412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu 931a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 932a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 933ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 934d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 935d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 936ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 937b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 938b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 939b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 940b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 941e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet struct macvlan_port *port = macvlan_port_get_rtnl(dev); 942b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 943412ca1550cbecb2cbed6086df51af08aa3452c86Herbert Xu cancel_work_sync(&port->bc_work); 944a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 945ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 9466e070aecd9e304264a6b8655f49aa7e6db0e55f2Lai Jiangshan kfree_rcu(port, rcu); 947b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 948b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 949b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 950b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 951b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 952b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 953b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 954b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 955b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 956b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 95727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 9581512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin if (data && data[IFLA_MACVLAN_FLAGS] && 9591512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin nla_get_u16(data[IFLA_MACVLAN_FLAGS]) & ~MACVLAN_FLAG_NOPROMISC) 9601512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin return -EINVAL; 9611512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin 96227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 96327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 96427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 96527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 96627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 967eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 96827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 96927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 97027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 97127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 97227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 973b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 974b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 975b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 976fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 9772f6a1b6607fd6b0eb9501843a40e0c7555f37b4aVlad Yasevich struct nlattr *tb[], struct nlattr *data[]) 978b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 979b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 980b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 981b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 982b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 983b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 984b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 985b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 986b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 98781adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 988b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 989b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 990b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 991d70f2cf520cf8c86c6b467fc5dcea524ec51dc2fKevin Wallace /* When creating macvlans or macvtaps on top of other macvlans - use 992b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 993a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 994d70f2cf520cf8c86c6b467fc5dcea524ec51dc2fKevin Wallace if (netif_is_macvlan(lowerdev)) 995d70f2cf520cf8c86c6b467fc5dcea524ec51dc2fKevin Wallace lowerdev = macvlan_dev_real_dev(lowerdev); 996a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 997b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 998b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 999b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 1000b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 1001b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1002b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 10037ce5d222190cb3ce3ae88bafde7c4fa52a5103e0Danny Kukawka eth_hw_addr_random(dev); 1004b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1005a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 1006b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 1007b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 1008b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 1009b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1010e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(lowerdev); 1011b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1012eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 1013eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 1014eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 1015eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 1016b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 1017b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 1018b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 10192be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich vlan->set_features = MACVLAN_FEATURES; 1020c674ac30c549596295eb0a5af7f4714c0b905b6fVlad Yasevich vlan->nest_level = dev_get_nest_level(lowerdev, netif_is_macvlan) + 1; 1021b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 102227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 102327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 102427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 102527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 1026df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) 1027df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 1028df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 1029eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 10305e3c516b512c0f8f18359413b04918f6347f67e7David S. Miller if (port->count) 1031eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 1032eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 10338b98604e398418b9f1a1e44ac79fbbc134818f50Bjørn Mork eth_hw_addr_inherit(dev, lowerdev); 1034eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 1035eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 10365e3c516b512c0f8f18359413b04918f6347f67e7David S. Miller port->count += 1; 103747d4ab91e4472723f181075c81627374ca86816cJohn Fastabend err = register_netdevice(dev); 103847d4ab91e4472723f181075c81627374ca86816cJohn Fastabend if (err < 0) 103947d4ab91e4472723f181075c81627374ca86816cJohn Fastabend goto destroy_port; 104047d4ab91e4472723f181075c81627374ca86816cJohn Fastabend 1041a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend dev->priv_flags |= IFF_MACVLAN; 10427cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko err = netdev_upper_dev_link(lowerdev, dev); 10437cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko if (err) 1044da37705cef30841616ed644ff33455bbc7374db0Cong Wang goto unregister_netdev; 1045b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1046233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_add_tail_rcu(&vlan->list, &port->vlans); 1047fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 1048f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 1049b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 1050f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 1051da37705cef30841616ed644ff33455bbc7374db0Cong Wangunregister_netdev: 1052da37705cef30841616ed644ff33455bbc7374db0Cong Wang unregister_netdevice(dev); 1053f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 10545e3c516b512c0f8f18359413b04918f6347f67e7David S. Miller port->count -= 1; 10555e3c516b512c0f8f18359413b04918f6347f67e7David S. Miller if (!port->count) 1056f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 1057f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 1058f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 1059b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1060fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 1061b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1062fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 1063fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 1064fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 10652f6a1b6607fd6b0eb9501843a40e0c7555f37b4aVlad Yasevich return macvlan_common_newlink(src_net, dev, tb, data); 1066fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 1067fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1068fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 1069b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1070b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 1071b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1072233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_del_rcu(&vlan->list); 107323289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 10747cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko netdev_upper_dev_unlink(vlan->lowerdev, dev); 1075b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1076fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 1077b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 107827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 107927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 108027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 108127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 1082266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin enum macvlan_mode mode; 1083266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin bool set_mode = false; 1084266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin 1085266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Validate mode, but don't set yet: setting flags may fail. */ 1086266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (data && data[IFLA_MACVLAN_MODE]) { 1087266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin set_mode = true; 1088266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 1089266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Passthrough mode can't be set or cleared dynamically */ 1090266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if ((mode == MACVLAN_MODE_PASSTHRU) != 1091266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin (vlan->mode == MACVLAN_MODE_PASSTHRU)) 1092266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin return -EINVAL; 1093266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin } 109499ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 1095df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) { 1096df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 1097df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; 109899ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (vlan->port->passthru && promisc) { 109999ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin int err; 110099ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 110199ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (flags & MACVLAN_FLAG_NOPROMISC) 110299ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, -1); 110399ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin else 110499ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, 1); 110599ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (err < 0) 110699ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin return err; 110799ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin } 1108df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = flags; 1109df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend } 1110266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (set_mode) 1111266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin vlan->mode = mode; 111227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 111327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 111427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 111527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 111627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 111701fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet return (0 111801fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(4) /* IFLA_MACVLAN_MODE */ 111901fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ 112001fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet ); 112127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 112227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 112327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 112427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 112527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 112627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 112727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 1128ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) 1129ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller goto nla_put_failure; 1130df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) 1131df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend goto nla_put_failure; 113227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 113327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 113427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 113527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 113627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 113727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 113827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 1139df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 1140df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, 114127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 114227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 1143fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 1144fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 1145fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 1146fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 1147fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 1148fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 1149fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 1150fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 1151fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 1152fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 1153fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1154fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 1155fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 1156fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 1157fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1158fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 1159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 11608a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 1161b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 1162b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 1163b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 1164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 1166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 1167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1168351638e7deeed2ec8ce451b53d33921b3da68f83Jiri Pirko struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1169b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 1170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 1171226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 1172b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1173a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 1174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 1175b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1176e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(dev); 1177a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 1178b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 1179b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 1180b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 1181fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 1182fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 1183b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 1184b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 1185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 11868c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 1187797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal netdev_update_features(vlan->dev); 1188b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1189b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 11903763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong case NETDEV_CHANGEMTU: 11913763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong list_for_each_entry(vlan, &port->vlans, list) { 11923763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong if (vlan->dev->mtu <= dev->mtu) 11933763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong continue; 11943763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong dev_set_mtu(vlan->dev, dev->mtu); 11953763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong } 11963763e7ef17143f5e9ae044638e65d2b0c0305fcfdingtianhong break; 1197e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong case NETDEV_CHANGEADDR: 1198e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (!port->passthru) 1199e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return NOTIFY_DONE; 1200e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 1201e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong vlan = list_first_entry_or_null(&port->vlans, 1202e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong struct macvlan_dev, 1203e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong list); 1204e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 1205e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong if (macvlan_sync_address(vlan->dev, dev->dev_addr)) 1206e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong return NOTIFY_BAD; 1207e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong 1208e289fd28176b78de7e54bf6c8e2b558afefaf6dfdingtianhong break; 1209b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 12103b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 12113b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 12123b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 12133b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 1214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 1215226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 1216226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 1217b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 12181c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 12191c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 12201c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 12214c9912556867bf89e7bb6946fd218a40b1d12139Vlad Yasevich 12224c9912556867bf89e7bb6946fd218a40b1d12139Vlad Yasevich case NETDEV_NOTIFY_PEERS: 12234c9912556867bf89e7bb6946fd218a40b1d12139Vlad Yasevich case NETDEV_BONDING_FAILOVER: 12244c9912556867bf89e7bb6946fd218a40b1d12139Vlad Yasevich case NETDEV_RESEND_IGMP: 12254c9912556867bf89e7bb6946fd218a40b1d12139Vlad Yasevich /* Propagate to all vlans */ 12264c9912556867bf89e7bb6946fd218a40b1d12139Vlad Yasevich list_for_each_entry(vlan, &port->vlans, list) 12274c9912556867bf89e7bb6946fd218a40b1d12139Vlad Yasevich call_netdevice_notifiers(event, vlan->dev); 1228b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1229b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 1230b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1231b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1232b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 1233b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 1234b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 1235b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1236b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 1237b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1238b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 1239b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1240b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 1241b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1242fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 1243b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 1244b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 1245b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 1246b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 1247b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1248b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 1249b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1250b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1251b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 1252b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1253b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 1254b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1255b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1256b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1257b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 1258b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 1259b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1260b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 1261b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 1262b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 1263b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 1264