macvlan.c revision d527043040740f41192dfd71793f905a998ee4f6
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 49a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get_rcu(dev) \ 50a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko ((struct macvlan_port *) rcu_dereference(dev->rx_handler_data)) 51a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get(dev) ((struct macvlan_port *) dev->rx_handler_data) 52a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 53a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 54b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 55b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 56b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 57b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 58b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 59b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 60b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[addr[5]], hlist) { 61a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 63b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 64b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 65b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 66b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 67f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 68f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 69f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 70f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 71f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 72f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 74f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 75449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 77f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 78449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 79449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 84f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 85449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 99f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 100a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(port->dev->dev_addr, addr)) 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 106f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 108f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 109a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 110fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 111fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 112618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 113a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 114fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 115a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 116a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 117a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 118618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 119fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 120618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 122a6700db17980972199e61c06be535a79e1b0b4e6Joe Perches if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) 123a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_BROADCAST; 124a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann else 125a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->pkt_type = PACKET_MULTICAST; 126a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 127fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->receive(skb); 128a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann} 129a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 130cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazetstatic unsigned int mc_hash(const unsigned char *addr) 131cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet{ 132cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet u32 val = __get_unaligned_cpu32(addr + 2); 133cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 134cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet return hash_32(val, MACVLAN_MC_FILTER_BITS); 135cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet} 136cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 137b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 138618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 139618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 140618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 141b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 142b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 143b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 144b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 145b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 146b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 147a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 148cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet unsigned int hash = mc_hash(eth->h_dest); 149b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 150efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 151efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 152efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 153b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 154b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 155618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 156618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 157618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 158cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (!test_bit(hash, vlan->mc_filter)) 159cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet continue; 160b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 161fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_broadcast_one(nskb, vlan, eth, 162618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann mode == MACVLAN_MODE_BRIDGE); 163a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 164a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 166b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 168b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 169b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 1708a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirkostatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 171b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 172ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 1738a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko struct sk_buff *skb = *pskb; 174b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 175b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 176618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 177b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 178ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 179ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 180b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 181a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 182b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 183bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet skb = ip_check_defrag(skb, IP_DEFRAG_MACVLAN); 184bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet if (!skb) 185bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet return RX_HANDLER_CONSUMED; 1864ec7ac1203bcf21f5e3d977c9818b1a56c9ef40dEric Dumazet eth = eth_hdr(skb); 187618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 188618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 189618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 190618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 191618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 192618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 193eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 194618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 195618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 196618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 197618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 198618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 199618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 200618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 201618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 202618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 203618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 204618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 205618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 206618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 207729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger else { 208729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger /* forward to original port. */ 209729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger vlan = src; 210729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger ret = macvlan_broadcast_one(skb, vlan, eth, 0); 211729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger goto out; 212729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger } 213729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger 2148a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 215b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 216b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 217eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 218eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = list_first_entry(&port->vlans, struct macvlan_dev, list); 219eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 220eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 221b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 2228a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 223b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 224b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 225b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 226b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 2278a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 228b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 229a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 230b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 231a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 232ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 233b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 234b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 235b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 236b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 237ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 238ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 239ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 240ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 2418a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 242b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 243b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 244618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 245618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 246618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 247618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 248618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 24912a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano __u8 ip_summed = skb->ip_summed; 250618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 251618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 252618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 25312a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = CHECKSUM_UNNECESSARY; 254618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 255618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 256618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 257618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 258618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 259618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 260618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 261618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 262618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 263a37dd3332319260cce81ac91ce25fcc3a31de997David Ward /* send to lowerdev first for its network taps */ 264cb2d0f3e968bff7c6d262aca3e3ab8d4184e69b2David Ward dev_forward_skb(vlan->lowerdev, skb); 265618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 266618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 267618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 268618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 269618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 270618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 27112a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = ip_summed; 27259b9997baba5242997ddc7bd96b1391f5275a5a4David S. Miller skb->dev = vlan->lowerdev; 273618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 274618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 275618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 276fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 277fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 278b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 279b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 280b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 2818ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet const struct macvlan_dev *vlan = netdev_priv(dev); 282b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 283618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret = macvlan_queue_xmit(skb, dev); 2842d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 2858ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *pcpu_stats; 2862c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 2878ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 2888ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 2898ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 2908ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 2918ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 2928ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 2938ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 2948ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 295cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 296b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 297fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 298b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 299b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 3003b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 3013b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 302b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 303b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 304b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 305b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3060c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 3070c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 308b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 309b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 3103b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 3113b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 3123b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 3133b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 3143b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 3153b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 3163b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 3173b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 318b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 319b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 320b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 321b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 322b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 324eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 325df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) 326df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(lowerdev, 1); 327eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 328eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 329eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 330f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 331f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 332f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 333f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 334a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 335b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 336b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 337b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 338b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 339b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 340b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 341b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 342eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 343eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 344f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 345b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 346b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 347b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 348a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 349b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 350b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 351b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 352b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 353b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 354b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 355b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 356b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 357b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 358df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_unsync(lowerdev, dev); 359df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_mc_unsync(lowerdev, dev); 360df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 361eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 362df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) 363df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(lowerdev, -1); 364eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 365eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 366eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 367b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 368b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 369b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 370a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 371b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 372eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 373449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 374b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 375b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 376b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 377ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 378ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 379ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 380ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 381ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 382ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 383ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 384ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 385ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 386ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 387f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 388f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 389f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 390f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 391f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 392f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 393f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 394ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 395a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 396ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 397f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 398ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 399a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 400f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 401f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 402f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 403ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 404ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 405ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 407b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 408b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 409b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 410b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 411b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 413b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 414b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 415df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabendstatic void macvlan_set_mac_lists(struct net_device *dev) 416b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 417b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 418b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 419cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { 420cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_fill(vlan->mc_filter, MACVLAN_MC_FILTER_SZ); 421cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } else { 422cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet struct netdev_hw_addr *ha; 423cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); 424cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet 425cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); 426cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet netdev_for_each_mc_addr(ha, dev) { 427cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet __set_bit(mc_hash(ha->addr), filter); 428cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 429d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 430d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet __set_bit(mc_hash(dev->broadcast), filter); 431d527043040740f41192dfd71793f905a998ee4f6Eric Dumazet 432cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet bitmap_copy(vlan->mc_filter, filter, MACVLAN_MC_FILTER_SZ); 433cd431e738509e74726055390c9e5e81e8e7e03ecEric Dumazet } 434df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_uc_sync(vlan->lowerdev, dev); 435b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 436b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 437b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 438b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 439b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 440b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 441b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 442b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 443b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 444b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 445b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 446b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 447b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 448b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 449b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 450b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 451b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 452b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 453b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 454cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 455b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 456b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 457b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 458b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 4598d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ 4608d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_HW_VLAN_FILTER) 461b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 462b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 463b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 464b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 465e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 466e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 467e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 468c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 469c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 470c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 471c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 472c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 473c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 474c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 475cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 476cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 477e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 478c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 479c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 480b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 481b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 482b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 483b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 484b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 485b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 486b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 487b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 4888ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet dev->features |= NETIF_F_LLTX; 4898c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 490b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 491ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 492b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 493c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 494c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 4958ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet vlan->pcpu_stats = alloc_percpu(struct macvlan_pcpu_stats); 4968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 497fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 498fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 499b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 500b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 501b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 502fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 503fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 504fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 505d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 506fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 508d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 509d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 510d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 511d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 512fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 513fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 51428172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 51528172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 516fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 517fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 518fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5198ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 5208ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *p; 5218ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 5228ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 523bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 524fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 525fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 526fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 5278ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 528bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 529bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 530bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 531bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 532bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 5338ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 5348ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 535bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 5368ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 5378ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 5388ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 5398ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 5408ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 5418ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 5428ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 5438ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 5448ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 5458ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 5468ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 547fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 5488ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 5498ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 5508ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 551fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 552fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 553fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 554fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5558e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_add_vid(struct net_device *dev, 5568d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend unsigned short vid) 5578d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5588d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5598d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5608d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 56187002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko return vlan_vid_add(lowerdev, vid); 5628d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5638d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 5648e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_kill_vid(struct net_device *dev, 5658d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend unsigned short vid) 5668d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5678d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5688d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5698d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 57087002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko vlan_vid_del(lowerdev, vid); 5718e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirko return 0; 5728d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5738d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 574edc7d57327bd08bfd04f41531d49b176369db218stephen hemmingerstatic int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 575df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 5766b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr, 577df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend u16 flags) 578df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 579df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 580df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 581df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 582df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 583df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 584df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 585df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 586df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_add_excl(dev, addr); 587df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 588df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_add_excl(dev, addr); 589df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 590df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 591df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 592df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 593df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabendstatic int macvlan_fdb_del(struct ndmsg *ndm, 594df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct net_device *dev, 5956b6e27255f29a6191ef8ad96bfcc392ab2ef6c71stephen hemminger const unsigned char *addr) 596df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend{ 597df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 598df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend int err = -EINVAL; 599df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 600df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (!vlan->port->passthru) 601df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return -EOPNOTSUPP; 602df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 603df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (is_unicast_ether_addr(addr)) 604df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_uc_del(dev, addr); 605df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (is_multicast_ether_addr(addr)) 606df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend err = dev_mc_del(dev, addr); 607df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 608df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend return err; 609df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend} 610df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 611b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 613b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 6147826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); 6157826d43f2db45c9305a6e0ba165650e1a203f517Jiri Pirko strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); 616b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 617b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 6189edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 6199edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 6209edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 6219edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 6224bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko 6234bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko return __ethtool_get_settings(vlan->lowerdev, cmd); 6249edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 6259edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 626b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 627b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 6289edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 629b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 630b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 631b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 63254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 63354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 634fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 63554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 63654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 637008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 63854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 63954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 64054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 641df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_set_rx_mode = macvlan_set_mac_lists, 642bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 64354a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 6448d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, 6458d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, 646df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_add = macvlan_fdb_add, 647df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_del = macvlan_fdb_del, 648df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend .ndo_fdb_dump = ndo_dflt_fdb_dump, 64954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 65054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 6518a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 652b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 653b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 654b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 655550fd08c2cebad61c548def135f67aba284c6162Neil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 65654a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 657b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 6583b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 659b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 6608a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 6618a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 6628a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 6638a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 6648a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 6658a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 666b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 667b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 668b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 670b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 671b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 672b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 673ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 674b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 675b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 676b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 677b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 678b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 679b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 680b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 681b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 682eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 683b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 684b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 685b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 686b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 687ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 688a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 689a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 690ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 691d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 692d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 693ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 694b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 695b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 696b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 697b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 698a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko struct macvlan_port *port = macvlan_port_get(dev); 699b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 700a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 701ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 7026e070aecd9e304264a6b8655f49aa7e6db0e55f2Lai Jiangshan kfree_rcu(port, rcu); 703b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 704b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 705b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 706b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 707b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 708b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 709b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 710b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 711b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 712b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 71327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 71427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 71527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 71627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 71727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 71827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 719eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 72027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 72127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 72227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 72327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 72427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 725b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 726b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 727b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 728fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 729fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 730fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 731fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 732fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 733b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 734b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 735b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 736b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 737b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 738b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 739b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 740b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 741b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 74281adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 743b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 744b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 745b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 746b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 747b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 748a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 749b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 750b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 751b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 752b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 753a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 754b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 755b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 756b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 757b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 758b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 759b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 7607ce5d222190cb3ce3ae88bafde7c4fa52a5103e0Danny Kukawka eth_hw_addr_random(dev); 761b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 762a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 763b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 764b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 765b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 766b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 767a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(lowerdev); 768b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 769eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 770eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 771eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 772eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 773b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 774b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 775b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 776fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 777fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 778b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 77927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 78027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 78127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 78227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 783df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) 784df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 785df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 786eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 787d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (port->count) 788eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 789eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 790eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); 791eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 792eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 7937cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko err = netdev_upper_dev_link(lowerdev, dev); 7947cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko if (err) 7957cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko goto destroy_port; 7967cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko 797d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count += 1; 798b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 799b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 8007cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko goto upper_dev_unlink; 801b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 802b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 803fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 804f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 805b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 806f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 8077cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirkoupper_dev_unlink: 8087cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko netdev_upper_dev_unlink(lowerdev, dev); 809f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 810d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 811d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 812f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 813f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 814f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 815b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 816fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 817b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 818fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 819fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 820fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 821fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 822fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 823fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 824fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 825fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 826fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 828b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 829b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 830b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 83123289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 8327cd43db77eed83ce9c2086edb402748256e05f14Jiri Pirko netdev_upper_dev_unlink(vlan->lowerdev, dev); 833b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 834fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 835b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 83627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 83727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 83827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 83927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 84027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 84127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 842df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (data && data[IFLA_MACVLAN_FLAGS]) { 843df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); 844df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; 845df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend 846df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (promisc && (flags & MACVLAN_FLAG_NOPROMISC)) 847df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(vlan->lowerdev, -1); 848df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend else if (promisc && !(flags & MACVLAN_FLAG_NOPROMISC)) 849df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend dev_set_promiscuity(vlan->lowerdev, 1); 850df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend vlan->flags = flags; 851df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend } 85227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 85327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 85427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 85527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 85627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 85701fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet return (0 85801fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(4) /* IFLA_MACVLAN_MODE */ 85901fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ 86001fe944f1024bd4e5c327ddbe8d657656b66af2fEric Dumazet ); 86127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 86227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 86327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 86427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 86527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 86627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 86727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 868ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) 869ead9a76ceec34df18dc84cb22053253bd5564376David S. Miller goto nla_put_failure; 870df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) 871df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend goto nla_put_failure; 87227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 87327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 87427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 87527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 87627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 87727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 87827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 879df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 880df8ef8f3aaa6692970a436204c4429210addb23aJohn Fastabend [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, 88127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 88227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 883fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 884fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 885fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 886fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 887fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 888fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 889fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 890fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 891fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 892fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 893fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 894fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 895fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 896fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 897fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 898fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 899b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 9008a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 901b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 902b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 903b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 904b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 905b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 906b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 907b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 908b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 909b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 910b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 911226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 912b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 913a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 914b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 915b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 916a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(dev); 917a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 918b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 919b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 920b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 921fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 922fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 923b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 924b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 925b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 926b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 9278c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 928b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 929b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 930b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 931b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 9323b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 9333b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 9343b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 9353b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 936b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 937226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 938226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 939226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 940b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 9411c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 9421c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 9431c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 944b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 945b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 946b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 947b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 948b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 949b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 950b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 951b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 952b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 953b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 954b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 955b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 956b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 957b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 958fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 959b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 960b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 961b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 962b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 963b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 964b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 965b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 966b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 967b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 968b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 969b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 970b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 971b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 972b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 973b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 974b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 975b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 976b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 977b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 978b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 979b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 980