macvlan.c revision b13ba1b83f524732523db1079e56478b32c85c96
1b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 2b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * Copyright (c) 2007 Patrick McHardy <kaber@trash.net> 3b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * 4b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * This program is free software; you can redistribute it and/or 5b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * modify it under the terms of the GNU General Public License as 6b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * published by the Free Software Foundation; either version 2 of 7b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * the License, or (at your option) any later version. 8b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * 9b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * The code this is based on carried the following copyright notice: 10b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * --- 11b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * (C) Copyright 2001-2006 12b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * Alex Zeffertt, Cambridge Broadband Ltd, ajz@cambridgebroadband.com 13b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * Re-worked by Ben Greear <greearb@candelatech.com> 14b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * --- 15b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 16b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/kernel.h> 17b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/types.h> 18b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/module.h> 19b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/init.h> 20b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/errno.h> 21b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/slab.h> 22b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/string.h> 2382524746c27fa418c250a56dd7606b9d3fc79826Franck Bui-Huu#include <linux/rculist.h> 24b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/notifier.h> 25b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/netdevice.h> 26b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/etherdevice.h> 27b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/ethtool.h> 28b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_arp.h> 2987002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko#include <linux/if_vlan.h> 30b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_link.h> 31b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <linux/if_macvlan.h> 32cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet#include <linux/hash.h> 33b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <net/rtnetlink.h> 34618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann#include <net/xfrm.h> 35b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 36b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) 37b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 38b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_port { 39b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 40b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; 41b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head vlans; 428b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct rcu_head rcu; 43eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala bool passthru; 44d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman int count; 45b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 46b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 47d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biedermanstatic void macvlan_port_destroy(struct net_device *dev); 48d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 49e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) 50e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 51e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rcu_dereference(dev->rx_handler_data); 52e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 53e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 54e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazetstatic struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) 55e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet{ 56e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet return rtnl_dereference(dev->rx_handler_data); 57e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet} 58e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet 59a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 60a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 61b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 63b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 64b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 65b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 66b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[addr[5]], hlist) { 67a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) 68b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 69b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 70b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 71b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 72b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 74f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 77f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 78f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 81449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 84449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 85449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 91449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 106a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(port->dev->dev_addr, addr)) 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 108f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 109f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 110f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 111f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 112f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 113f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 114f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 115a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 116fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 117fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 118618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 119a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 120fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 122618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 123fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 124618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 125a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 126a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) 127a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 128a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 129a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 130a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 131fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->receive(skb); 132a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 133a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 1343807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic u32 macvlan_hash_mix(const struct macvlan_dev *vlan) 1353807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet{ 1363807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); 1373807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet} 1383807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1393807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet 1403807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazetstatic unsigned int mc_hash(const struct macvlan_dev *vlan, 1413807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet const unsigned char *addr) 142cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet{ 143cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet u32 val = __get_unaligned_cpu32(addr + 2); 144cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 1453807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet val ^= macvlan_hash_mix(vlan); 146cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet return hash_32(val, MACVLAN_MC_FILTER_BITS); 147cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet} 148cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 149b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 150618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 151618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 152618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 158a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 1593807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet unsigned int hash; 160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 161efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 162efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 163efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 165b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_rcu(vlan, &port->vlan_hash[i], hlist) { 166618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 167618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 168618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 1693807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet hash = mc_hash(vlan, eth->h_dest); 170cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (!test_bit(hash, vlan->mc_filter)) 171cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet continue; 172de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu 173de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu err = NET_RX_DROP; 174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 175de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu if (likely(nskb)) 176de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu err = macvlan_broadcast_one( 177de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu nskb, vlan, eth, 178de9e8f3f4086b1e6ba302487074fb707f1a95fc7Herbert Xu mode == MACVLAN_MODE_BRIDGE); 179a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 180a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 181b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 182b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 183b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 184b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 185b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 1868a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirkostatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 187b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 188ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 1898a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko struct sk_buff *skb = *pskb; 190b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 191b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 192618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 193b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 194ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 195ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 196b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 197a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 198b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 199bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet skb = ip_check_defrag(skb, IP_DEFRAG_MACVLAN); 200bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet if (!skb) 201bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet return RX_HANDLER_CONSUMED; 2024ec7ac1203bcf21f5e3d977c9818b1a56c9ef40dEric Dumazet eth = eth_hdr(skb); 203618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 204618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 205618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 206618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 207618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 208618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 209eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 210618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 211618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 212618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 213618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 214618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 215618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 216618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 217618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 218618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 219618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 220618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 221618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 222618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 223729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger else { 224729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger /* forward to original port. */ 225729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger vlan = src; 226729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger ret = macvlan_broadcast_one(skb, vlan, eth, 0); 227729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger goto out; 228729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger } 229729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger 2308a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 231b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 232b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 233eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 234233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko vlan = list_first_or_null_rcu(&port->vlans, 235233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko struct macvlan_dev, list); 236eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 237eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 238b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 2398a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 240b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 241b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 242b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 243b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 2448a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 245b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 246a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 247b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 248a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 249ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 250b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 251b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 252b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 253b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 254ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 255ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 256ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 257ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 2588a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 259b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 260b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 261618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 262618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 263618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 264618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 265618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 26612a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano __u8 ip_summed = skb->ip_summed; 267618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 268618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 269618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 27012a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = CHECKSUM_UNNECESSARY; 271618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 272618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 273618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 274618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 275618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 276618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 277618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 278618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 279618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 280a37dd3332319260cce81ac91ce25fcc3a31de997David Ward /* send to lowerdev first for its network taps */ 281cb2d0f3e968bff7c6d262aca3e3ab8d4184e69b2David Ward dev_forward_skb(vlan->lowerdev, skb); 282618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 283618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 284618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 285618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 286618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 287618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 28812a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = ip_summed; 28959b9997baba5242997ddc7bd96b1391f5275a5a4David S. Miller skb->dev = vlan->lowerdev; 290618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 291618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 292618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 293fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 294fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 295b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 296b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 297b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 2988ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet const struct macvlan_dev *vlan = netdev_priv(dev); 299b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 300a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 301a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend skb->dev = vlan->lowerdev; 302a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend ret = dev_hard_start_xmit(skb, skb->dev, NULL, vlan->fwd_priv); 303a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } else { 304a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend ret = macvlan_queue_xmit(skb, dev); 305a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 306a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 3072d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 3088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *pcpu_stats; 3092c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 3108ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 3118ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 3128ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 3138ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 3148ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 3158ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 3168ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 3178ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 318cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 319b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 320fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 321b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 322b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 3233b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 3243b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 325b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 326b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 327b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 328b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3290c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 3300c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 331b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 332b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3333b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 3343b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 3353b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 3363b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 3373b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 3383b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 3393b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 3403b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 341b13ba1b83f524732523db1079e56478b32c85c96Jason Wangstatic struct rtnl_link_ops macvlan_link_ops; 342b13ba1b83f524732523db1079e56478b32c85c96Jason Wang 343b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 344b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 345b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 346b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 347b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 348b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 349eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 350787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) { 351787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin err = dev_set_promiscuity(lowerdev, 1); 352787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin if (err < 0) 353787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin goto out; 354787381415cf967c5d6d1d7c5b5bd893376945eddMichael S. Tsirkin } 355eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 356eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 357eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 358b13ba1b83f524732523db1079e56478b32c85c96Jason Wang if (lowerdev->features & NETIF_F_HW_L2FW_DOFFLOAD && 359b13ba1b83f524732523db1079e56478b32c85c96Jason Wang dev->rtnl_link_ops == &macvlan_link_ops) { 360a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = 361a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_add_station(lowerdev, dev); 362a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 363a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend /* If we get a NULL pointer back, or if we get an error 364a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend * then we should just fall through to the non accelerated path 365a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend */ 366a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (IS_ERR_OR_NULL(vlan->fwd_priv)) { 367a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 368a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } else { 369a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend dev->features &= ~NETIF_F_LLTX; 370a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend return 0; 371a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 372a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 373a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 374f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 375f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 376f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 377f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 378a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 379b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 380b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 381b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 382b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 383b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 384b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 385b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 386eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 387eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 388f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 389b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 390b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 391b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 392a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 393b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 394a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 395a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, 396a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv); 397a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 398a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 399b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 403b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 404b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 405b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 407a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend if (vlan->fwd_priv) { 408a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, 409a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv); 410a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend vlan->fwd_priv = NULL; 411a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend return 0; 412a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend } 413a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend 414df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_unsync(lowerdev, dev); 415df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_mc_unsync(lowerdev, dev); 416df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 417eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 418df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) 419df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(lowerdev, -1); 420eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 421eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 422eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 423b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 424b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 425b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 426a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 428eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 429449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 430b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 431b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 432b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 433ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 434ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 435ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 436ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 437ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 438ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 439ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 440ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 441ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 442ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 443f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 444f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 445f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 446f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 447f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 448f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 449f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 450ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 451a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 452ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 453f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 454ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 455a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 456f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 457f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 458f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 459ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 460ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 461ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 462b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 463b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 464b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 465b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 466b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 467b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 468b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 469b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 470b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 471df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabendstatic void macvlan_set_mac_lists(struct net_device *dev) 472b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 473b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 474b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 475cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { 476cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_fill(vlan->mc_filter, MACVLAN_MC_FILTER_SZ); 477cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } else { 478cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet struct netdev_hw_addr *ha; 479cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); 480cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 481cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); 482cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet netdev_for_each_mc_addr(ha, dev) { 4833807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, ha->addr), filter); 484cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 485d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 4863807ff5899f892abb4f06747c245fd648a2acdc5Eric Dumazet __set_bit(mc_hash(vlan, dev->broadcast), filter); 487d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 488cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_copy(vlan->mc_filter, filter, MACVLAN_MC_FILTER_SZ); 489cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 490df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_sync(vlan->lowerdev, dev); 491b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 492b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 493b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 494b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 495b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 496b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 497b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 498b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 499b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 500b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 501b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 502b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 503b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 504b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 505b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 506b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 507b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 508b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 509b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 510cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 511b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 512b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 513b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 514b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 5158d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ 51628d2b136ca6c7bf7173a43a90f747ecda5b0520dPatrick McHardy NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) 517b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 518b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 519b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 520b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 521e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 522e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 523e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 524c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 525c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 526c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 527c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 528c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 529c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 530c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 531cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 532cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 533e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 534c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 535c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 536b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 537b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 538b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 539b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 540827da44c61419f29ae3be198c342e2147f1a10cbJohn Stultz int i; 541b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 542b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 543b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 544b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 5458ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet dev->features |= NETIF_F_LLTX; 5468c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 547b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 548ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 550c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 551c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 5528ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet vlan->pcpu_stats = alloc_percpu(struct macvlan_pcpu_stats); 5538ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 554fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 555fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 556827da44c61419f29ae3be198c342e2147f1a10cbJohn Stultz for_each_possible_cpu(i) { 557827da44c61419f29ae3be198c342e2147f1a10cbJohn Stultz struct macvlan_pcpu_stats *mvlstats; 558827da44c61419f29ae3be198c342e2147f1a10cbJohn Stultz mvlstats = per_cpu_ptr(vlan->pcpu_stats, i); 559827da44c61419f29ae3be198c342e2147f1a10cbJohn Stultz u64_stats_init(&mvlstats->syncp); 560827da44c61419f29ae3be198c342e2147f1a10cbJohn Stultz } 561827da44c61419f29ae3be198c342e2147f1a10cbJohn Stultz 562b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 564b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 565fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 566fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 567fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 568d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 569fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5708ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 571d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 572d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 573d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 574d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 575fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 576fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 57728172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 57828172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 579fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 580fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 581fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5828ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 5838ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *p; 5848ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 5858ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 586bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 587fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 588fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 589fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 5908ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 591bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 592bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 593bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 594bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 595bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 5968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 5978ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 598bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 5998ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 6008ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 6018ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 6028ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 6038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 6048ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 6058ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 6068ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 6078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 6088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 6098ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 610fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 6118ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 6128ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 6138ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 614fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 615fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 616fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 617fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 6188e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_add_vid(struct net_device *dev, 61980d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 6208d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 6218d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 6228d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 6238d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 62480d5c3689b886308247da295a228a54df49a44f6Patrick McHardy return vlan_vid_add(lowerdev, proto, vid); 6258d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 6268d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 6278e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_kill_vid(struct net_device *dev, 62880d5c3689b886308247da295a228a54df49a44f6Patrick McHardy __be16 proto, u16 vid) 6298d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 6308d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 6318d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 6328d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 63380d5c3689b886308247da295a228a54df49a44f6Patrick McHardy vlan_vid_del(lowerdev, proto, vid); 6348e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirko return 0; 6358d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 6368d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 637edc7d57327bd08bfd04f41531d49b176369db218stephen hemmingerstatic int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 638df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 6396b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr, 640df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend u16 flags) 641df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 642df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 643df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 644df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 645df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 646df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 647df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 648ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter if (flags & NLM_F_REPLACE) 649ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter return -EOPNOTSUPP; 650ab2cfbb2bddb7c7bc4394e52e91044d5ff645cb4Thomas Richter 651df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 652df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_add_excl(dev, addr); 653df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 654df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_add_excl(dev, addr); 655df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 656df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 657df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 658df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 6591690be63a27b20ae65c792729a44f5970561ffa4Vlad Yasevichstatic int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 660df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 6616b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr) 662df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 663df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 664df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 665df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 666df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 667df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 668df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 669df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 670df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_del(dev, addr); 671df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 672df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_del(dev, addr); 673df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 674df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 675df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 676df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 677b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 679b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 6807826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); 6817826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); 682b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 683b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 6849edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 6859edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 6869edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 6879edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 6884bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko 6894bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko return __ethtool_get_settings(vlan->lowerdev, cmd); 6909edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 6919edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 6922be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevichstatic netdev_features_t macvlan_fix_features(struct net_device *dev, 6932be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich netdev_features_t features) 6942be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich{ 6952be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich struct macvlan_dev *vlan = netdev_priv(dev); 696797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal netdev_features_t mask; 6972be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 698797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features |= NETIF_F_ALL_FOR_ALL; 699797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features &= (vlan->set_features | ~MACVLAN_FEATURES); 700797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal mask = features; 701797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal 702797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features = netdev_increment_features(vlan->lowerdev->features, 703797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features, 704797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal mask); 705797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal if (!vlan->fwd_priv) 706797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal features |= NETIF_F_LLTX; 707797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal 708797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal return features; 7092be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich} 7102be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich 711b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 712b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 7139edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 714b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 715b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 716b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 71754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 71854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 719fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 72054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 72154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 722008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 72354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 7242be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich .ndo_fix_features = macvlan_fix_features, 72554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 72654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 727df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_set_rx_mode = macvlan_set_mac_lists, 728bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 72954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 7308d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, 7318d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, 732df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_add = macvlan_fdb_add, 733df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_del = macvlan_fdb_del, 734df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_dump = ndo_dflt_fdb_dump, 73554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 73654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 7378a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 738b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 739b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 740b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 741550fd08c2cebad61c548def135f67aba284c6162Neil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 74287ab7f6f2874f1115817e394a7ed2dea1c72549eVlad Yasevich dev->priv_flags |= IFF_UNICAST_FLT; 74354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 744b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 7457174012955d0e545e5253192e2cd37fedbc405f9Lutz Jaenicke dev->header_ops = &macvlan_hard_header_ops; 746b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 7478a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 7488a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 7498a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 7508a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 7518a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 7528a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 753b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 754b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 755b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 756b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 757b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 758b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 759b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 760ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 761b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 762b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 763b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 764b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 765b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 766b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 767b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 768b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 769eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 770b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 771b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 772b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 773b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 774ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 775a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 776a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 777ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 778d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 779d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 780ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 781b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 782b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 783b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 784b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 785e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet struct macvlan_port *port = macvlan_port_get_rtnl(dev); 786b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 787a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 788ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 7896e070aecd9e304264a6b8655f49aa7e6db0e55f2Lai Jiangshan kfree_rcu(port, rcu); 790b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 791b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 792b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 793b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 794b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 795b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 796b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 797b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 798b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 799b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 80027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 8011512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin if (data && data[IFLA_MACVLAN_FLAGS] && 8021512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin nla_get_u16(data[IFLA_MACVLAN_FLAGS]) & ~MACVLAN_FLAG_NOPROMISC) 8031512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin return -EINVAL; 8041512747820367c8b3b8b72035f0f78c62f2bf1e9Michael S. Tsirkin 80527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 80627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 80727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 80827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 80927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 810eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 81127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 81227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 81327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 81427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 81527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 816b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 817b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 818b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 819fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 820fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 821fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 822fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 823fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 824b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 825b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 826b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 828b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 829b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 830b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 831b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 832b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 83381adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 834b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 835b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 836b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 837b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 838b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 839a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 840b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 841b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 842b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 843b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 844a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 845b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 846b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 847b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 848b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 849b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 850b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 8517ce5d222190cb3ce3ae88bafde7c4fa52a5103e0Danny Kukawka eth_hw_addr_random(dev); 852b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 853a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 854b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 855b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 856b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 857b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 858e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(lowerdev); 859b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 860eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 861eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 862eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 863eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 864b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 865b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 866b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 867fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 868fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 8692be5c76794b0e570aa87b012df5ac864ce668a74Vlad Yasevich vlan->set_features = MACVLAN_FEATURES; 870b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 87127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 87227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 87327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 87427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 875df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) 876df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 877df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 878eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 879d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (port->count) 880eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 881eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 8828b98604e398418b9f1a1e44ac79fbbc134818f50Bjørn Mork eth_hw_addr_inherit(dev, lowerdev); 883eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 884eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 88547d4ab91e4472723f181075c81627374ca86816cJohn Fastabend port->count += 1; 88647d4ab91e4472723f181075c81627374ca86816cJohn Fastabend err = register_netdevice(dev); 88747d4ab91e4472723f181075c81627374ca86816cJohn Fastabend if (err < 0) 88847d4ab91e4472723f181075c81627374ca86816cJohn Fastabend goto destroy_port; 88947d4ab91e4472723f181075c81627374ca86816cJohn Fastabend 890a6cc0cfa72e0b6d9f2c8fd858aacc32313c4f272John Fastabend dev->priv_flags |= IFF_MACVLAN; 8917cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko err = netdev_upper_dev_link(lowerdev, dev); 8927cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko if (err) 8937cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko goto destroy_port; 8947cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko 895b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 896233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_add_tail_rcu(&vlan->list, &port->vlans); 897fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 898f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 899b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 900f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 901f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 902d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 903d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 904f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 905f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 906f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 907b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 908fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 909b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 910fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 911fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 912fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 913fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 914fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 915fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 916fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 917fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 918fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 919b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 920b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 921b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 922233c7df0821c4190e2d3f4be0f2ca0ab40a5ed8cJiri Pirko list_del_rcu(&vlan->list); 92323289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 9247cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko netdev_upper_dev_unlink(vlan->lowerdev, dev); 925b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 926fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 927b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 92827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 92927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 93027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 93127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 932266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin enum macvlan_mode mode; 933266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin bool set_mode = false; 934266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin 935266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Validate mode, but don't set yet: setting flags may fail. */ 936266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (data && data[IFLA_MACVLAN_MODE]) { 937266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin set_mode = true; 938266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 939266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin /* Passthrough mode can't be set or cleared dynamically */ 940266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if ((mode == MACVLAN_MODE_PASSTHRU) != 941266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin (vlan->mode == MACVLAN_MODE_PASSTHRU)) 942266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin return -EINVAL; 943266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin } 94499ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 945df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) { 946df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 947df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; 94899ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (vlan->port->passthru && promisc) { 94999ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin int err; 95099ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin 95199ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (flags & MACVLAN_FLAG_NOPROMISC) 95299ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, -1); 95399ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin else 95499ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin err = dev_set_promiscuity(vlan->lowerdev, 1); 95599ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin if (err < 0) 95699ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin return err; 95799ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2Michael S. Tsirkin } 958df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = flags; 959df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend } 960266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin if (set_mode) 961266e83474c98e9f18d31f4837cfe05819a660d32Michael S. Tsirkin vlan->mode = mode; 96227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 96327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 96427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 96527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 96627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 96701fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet return (0 96801fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(4) /* IFLA_MACVLAN_MODE */ 96901fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ 97001fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet ); 97127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 97227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 97327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 97427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 97527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 97627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 97727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 978ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) 979ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller goto nla_put_failure; 980df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) 981df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend goto nla_put_failure; 98227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 98327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 98427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 98527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 98627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 98727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 98827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 989df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 990df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, 99127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 99227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 993fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 994fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 995fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 996fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 997fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 998fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 999fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 1000fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 1001fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 1002fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 1003fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1004fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 1005fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 1006fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 1007fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 1008fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 1009b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 10108a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 1011b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 1012b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 1013b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 1014b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1015b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 1016b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 1017b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1018351638e7deeed2ec8ce451b53d33921b3da68f83Jiri Pirko struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1019b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 1020b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 1021226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 1022b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1023a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 1024b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 1025b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1026e052f7e64daae6aa7a7ccd003b3c285d99755afbEric Dumazet port = macvlan_port_get_rtnl(dev); 1027a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 1028b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 1029b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 1030b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 1031fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 1032fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 1033b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 1034b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 1035b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 10368c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 1037797f87f83b60685ff8a13fa0572d2f10393c50d3Florian Westphal netdev_update_features(vlan->dev); 1038b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1039b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 1040b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 10413b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 10423b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 10433b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 10443b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 1045b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 1046226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 1047226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 1048226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 1049b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 10501c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 10511c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 10521c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 1053b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 1054b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 1055b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1056b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1057b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 1058b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 1059b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 1060b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1061b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 1062b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1063b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 1064b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1065b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 1066b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1067fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 1068b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 1069b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 1070b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 1071b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 1072b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1073b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 1074b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1075b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1076b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 1077b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 1078b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 1079b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 1080b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 1081b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1082b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 1083b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 1084b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 1085b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 1086b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 1087b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 1088b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 1089