macvlan.c revision 87002b03baabd2b8f6281ab6411ed88d24958de1
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> 32b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#include <net/rtnetlink.h> 33618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann#include <net/xfrm.h> 34b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 35b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) 36b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 37b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystruct macvlan_port { 38b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 39b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; 40b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct list_head vlans; 418b37ef0a1f6c2401fea3536facfa21191936bd6cJiri Pirko struct rcu_head rcu; 42eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala bool passthru; 43d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman int count; 44b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 45b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 46d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biedermanstatic void macvlan_port_destroy(struct net_device *dev); 47d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 48a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get_rcu(dev) \ 49a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko ((struct macvlan_port *) rcu_dereference(dev->rx_handler_data)) 50a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_get(dev) ((struct macvlan_port *) dev->rx_handler_data) 51a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko#define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) 52a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 53b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, 54b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const unsigned char *addr) 55b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 56b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan; 57b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 58b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 59b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[addr[5]], hlist) { 60ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(vlan->dev->dev_addr, addr)) 61b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return vlan; 62b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 63b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NULL; 64b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 65b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 66f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_add(struct macvlan_dev *vlan) 67f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 68f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman struct macvlan_port *port = vlan->port; 69f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr = vlan->dev->dev_addr; 70f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 71f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]); 72f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 73f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 74449f4544267e73d5db372971da63634707c32299Eric Dumazetstatic void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) 75f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 76f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman hlist_del_rcu(&vlan->hlist); 77449f4544267e73d5db372971da63634707c32299Eric Dumazet if (sync) 78449f4544267e73d5db372971da63634707c32299Eric Dumazet synchronize_rcu(); 79f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 80f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 81f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic void macvlan_hash_change_addr(struct macvlan_dev *vlan, 82f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 83f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 84449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, true); 85f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Now that we are unhashed it is safe to change the device 86f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * address without confusing packet delivery. 87f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 88f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); 89f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 90f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 91f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 92f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biedermanstatic int macvlan_addr_busy(const struct macvlan_port *port, 93f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman const unsigned char *addr) 94f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman{ 95f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Test to see if the specified multicast address is 96f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * currently in use by the underlying device or 97f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman * another macvlan. 98f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman */ 99ac06713d55d450cbc9ef871b1b238409238f0fe0Eric Dumazet if (!compare_ether_addr_64bits(port->dev->dev_addr, addr)) 100f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 101f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 102f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_hash_lookup(port, addr)) 103f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 1; 104f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 105f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return 0; 106f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman} 107f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 108a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 109fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_broadcast_one(struct sk_buff *skb, 110fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann const struct macvlan_dev *vlan, 111618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth, bool local) 112a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann{ 113fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev = vlan->dev; 114a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 115a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann return NET_RX_DROP; 116a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 117618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (local) 118fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return vlan->forward(dev, skb); 119618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 120a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann skb->dev = dev; 121a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!compare_ether_addr_64bits(eth->h_dest, 122a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann 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 130b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_broadcast(struct sk_buff *skb, 131618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port, 132618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann struct net_device *src, 133618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann enum macvlan_mode mode) 134b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 135b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 136b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 137b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct hlist_node *n; 138b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct sk_buff *nskb; 139b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 140a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann int err; 141b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 142efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy if (skb->protocol == htons(ETH_P_PAUSE)) 143efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy return; 144efbbced361f3ff4ff9e85310ccff894185c4d904Patrick McHardy 145b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) { 146b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { 147618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->dev == src || !(vlan->mode & mode)) 148618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann continue; 149618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 150b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy nskb = skb_clone(skb, GFP_ATOMIC); 151fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_broadcast_one(nskb, vlan, eth, 152618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann mode == MACVLAN_MODE_BRIDGE); 153a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann macvlan_count_rx(vlan, skb->len + ETH_HLEN, 154a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann err == NET_RX_SUCCESS, 1); 155b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 156b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 157b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 158b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 159b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* called under rcu_read_lock() from netif_receive_skb */ 1608a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirkostatic rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) 161b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 162ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko struct macvlan_port *port; 1638a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko struct sk_buff *skb = *pskb; 164b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct ethhdr *eth = eth_hdr(skb); 165b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan; 166618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *src; 167b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev; 168ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala unsigned int len = 0; 169ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala int ret = NET_RX_DROP; 170b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 171a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get_rcu(skb->dev); 172b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (is_multicast_ether_addr(eth->h_dest)) { 173bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet skb = ip_check_defrag(skb, IP_DEFRAG_MACVLAN); 174bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet if (!skb) 175bc416d9768aa9a2e46eb11354a9c58399dafeb01Eric Dumazet return RX_HANDLER_CONSUMED; 176618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann src = macvlan_hash_lookup(port, eth->h_source); 177618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (!src) 178618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* frame comes from an external address */ 179618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, NULL, 180618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_PRIVATE | 181618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 182eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala MACVLAN_MODE_PASSTHRU| 183618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 184618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_VEPA) 185618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* flood to everyone except source */ 186618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 187618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA | 188618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_BRIDGE); 189618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann else if (src->mode == MACVLAN_MODE_BRIDGE) 190618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* 191618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * flood only to VEPA ports, bridge ports 192618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann * already saw the frame on the way out. 193618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann */ 194618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, src->dev, 195618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann MACVLAN_MODE_VEPA); 196729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger else { 197729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger /* forward to original port. */ 198729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger vlan = src; 199729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger ret = macvlan_broadcast_one(skb, vlan, eth, 0); 200729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger goto out; 201729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger } 202729e72a10930ef765c11a5a35031ba47f18221c4stephen hemminger 2038a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 204b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 205b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 206eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 207eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = list_first_entry(&port->vlans, struct macvlan_dev, list); 208eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala else 209eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala vlan = macvlan_hash_lookup(port, eth->h_dest); 210b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (vlan == NULL) 2118a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_PASS; 212b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 213b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev = vlan->dev; 214b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (unlikely(!(dev->flags & IFF_UP))) { 215b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy kfree_skb(skb); 2168a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 217b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 218a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann len = skb->len + ETH_HLEN; 219b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 220a1e514c5d0397b5581721aad9b303f7df83b103dArnd Bergmann if (!skb) 221ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala goto out; 222b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 223b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->dev = dev; 224b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy skb->pkt_type = PACKET_HOST; 225b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 226ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala ret = vlan->receive(skb); 227ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala 228ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudralaout: 229ba01877f56c3244b21746d3f1537f7647ed97984Sridhar Samudrala macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, 0); 2308a4eb5734e8d1dc60a8c28576bbbdfdcc643626dJiri Pirko return RX_HANDLER_CONSUMED; 231b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 232b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 233618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannstatic int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) 234618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann{ 235618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *vlan = netdev_priv(dev); 236618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_port *port = vlan->port; 237618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct macvlan_dev *dest; 23812a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano __u8 ip_summed = skb->ip_summed; 239618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 240618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (vlan->mode == MACVLAN_MODE_BRIDGE) { 241618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann const struct ethhdr *eth = (void *)skb->data; 24212a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = CHECKSUM_UNNECESSARY; 243618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 244618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann /* send to other bridge ports directly */ 245618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (is_multicast_ether_addr(eth->h_dest)) { 246618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); 247618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann goto xmit_world; 248618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 249618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 250618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann dest = macvlan_hash_lookup(port, eth->h_dest); 251618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { 252a37dd3332319260cce81ac91ce25fcc3a31de997David Ward /* send to lowerdev first for its network taps */ 253cb2d0f3e968bff7c6d262aca3e3ab8d4184e69b2David Ward dev_forward_skb(vlan->lowerdev, skb); 254618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 255618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return NET_XMIT_SUCCESS; 256618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 257618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann } 258618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 259618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmannxmit_world: 26012a2856b604476c27d85a5f9a57ae1661fc46019Daniel Lezcano skb->ip_summed = ip_summed; 2618a83a00b0735190384a348156837918271034144Arnd Bergmann skb_set_dev(skb, vlan->lowerdev); 262618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann return dev_queue_xmit(skb); 263618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann} 264618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann 265fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannnetdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 266fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct net_device *dev) 267b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 268b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int len = skb->len; 269b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int ret; 2708ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet const struct macvlan_dev *vlan = netdev_priv(dev); 271b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 272618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9Arnd Bergmann ret = macvlan_queue_xmit(skb, dev); 2732d6c9ffcca7808f42ba6b953da0ba60e19a9cbbdEric Dumazet if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { 2748ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *pcpu_stats; 2752c11455321f37da6fe6cc36353149f9ac9183334Eric Dumazet 2768ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 2778ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_begin(&pcpu_stats->syncp); 2788ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_packets++; 2798ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet pcpu_stats->tx_bytes += len; 2808ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64_stats_update_end(&pcpu_stats->syncp); 2818ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } else { 2828ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet this_cpu_inc(vlan->pcpu_stats->tx_dropped); 2838ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet } 284cbbef5e183079455763fc470ccf69008f92ab4b6Patrick McHardy return ret; 285b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 286fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_start_xmit); 287b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 288b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, 2893b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger unsigned short type, const void *daddr, 2903b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger const void *saddr, unsigned len) 291b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 292b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct macvlan_dev *vlan = netdev_priv(dev); 293b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 294b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2950c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger return dev_hard_header(skb, lowerdev, type, daddr, 2960c4e85813d0a94eeb8bf813397a4907bdd7bb610Stephen Hemminger saddr ? : dev->dev_addr, len); 297b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 298b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 2993b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemmingerstatic const struct header_ops macvlan_hard_header_ops = { 3003b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .create = macvlan_hard_header, 3013b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .rebuild = eth_rebuild_header, 3023b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .parse = eth_header_parse, 3033b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache = eth_header_cache, 3043b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger .cache_update = eth_header_cache_update, 3053b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger}; 3063b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger 307b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_open(struct net_device *dev) 308b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 309b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 310b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 311b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 312b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 313eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 314eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, 1); 315eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_add; 316eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 317eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 318f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman err = -EBUSY; 319f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, dev->dev_addr)) 320f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman goto out; 321f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 322a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, dev->dev_addr); 323b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 324b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto out; 325b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (dev->flags & IFF_ALLMULTI) { 326b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen err = dev_set_allmulti(lowerdev, 1); 327b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen if (err < 0) 328b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen goto del_unicast; 329b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen } 330eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 331eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_add: 332f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_add(vlan); 333b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 334b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen 335b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chendel_unicast: 336a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 337b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chenout: 338b89fb7da2f9a69dd34ff10d45f66baa40ff8c0e5Wang Chen return err; 339b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 340b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 341b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_stop(struct net_device *dev) 342b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 343b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 344b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 345b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 346eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->port->passthru) { 347eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala dev_set_promiscuity(lowerdev, -1); 348eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala goto hash_del; 349eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 350eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 351b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_unsync(lowerdev, dev); 352b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->flags & IFF_ALLMULTI) 353b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, -1); 354b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 355a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 356b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 357eb06acdc85585f28864261f28659157848762ee4Sridhar Samudralahash_del: 358449f4544267e73d5db372971da63634707c32299Eric Dumazet macvlan_hash_del(vlan, !dev->dismantle); 359b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 360b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 361b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 362ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardystatic int macvlan_set_mac_address(struct net_device *dev, void *p) 363ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy{ 364ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 365ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 366ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy struct sockaddr *addr = p; 367ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy int err; 368ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 369ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 370ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return -EADDRNOTAVAIL; 371ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 372f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (!(dev->flags & IFF_UP)) { 373f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Just copy in the new address */ 374f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 375f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } else { 376f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman /* Rehash and update the device filters */ 377f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman if (macvlan_addr_busy(vlan->port, addr->sa_data)) 378f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return -EBUSY; 379ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 380a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko err = dev_uc_add(lowerdev, addr->sa_data); 381ccffad25b5136958d4769ed6de5e87992dd9c65cJiri Pirko if (err) 382f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman return err; 383ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 384a748ee2426817a95b1f03012d8f339c45c722ae1Jiri Pirko dev_uc_del(lowerdev, dev->dev_addr); 385f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman 386f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman macvlan_hash_change_addr(vlan, addr->sa_data); 387f9ac30f080d23ef0a2d4a1b7c6806c9a21c0f324Eric Biederman } 388ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy return 0; 389ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy} 390ad5d20a63940fcfb40af76ba06148f36d5d0b433Patrick McHardy 391b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_change_rx_flags(struct net_device *dev, int change) 392b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 393b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 394b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev = vlan->lowerdev; 395b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 396b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (change & IFF_ALLMULTI) 397b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); 398b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 399b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 400b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_set_multicast_list(struct net_device *dev) 401b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 402b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 403b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 404b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev_mc_sync(vlan->lowerdev, dev); 405b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 406b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 407b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_change_mtu(struct net_device *dev, int new_mtu) 408b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 409b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 410b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 411b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu) 412b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 413b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = new_mtu; 414b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 415b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 416b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 417b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy/* 418b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * macvlan network devices have devices nesting below it and are a special 419b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * "super class" of normal network devices; split their locks off into a 420b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy * separate class since they always nest. 421b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy */ 422b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct lock_class_key macvlan_netdev_xmit_lock_key; 423cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Millerstatic struct lock_class_key macvlan_netdev_addr_lock_key; 424b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 425b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_FEATURES \ 426b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ 427b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ 4288d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ 4298d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend NETIF_F_HW_VLAN_FILTER) 430b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 431b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy#define MACVLAN_STATE_MASK \ 432b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) 433b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 434e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Millerstatic void macvlan_set_lockdep_class_one(struct net_device *dev, 435e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller struct netdev_queue *txq, 436e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller void *_unused) 437c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 438c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller lockdep_set_class(&txq->_xmit_lock, 439c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller &macvlan_netdev_xmit_lock_key); 440c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 441c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 442c773e847ea8f6812804e40f52399c6921a00eab1David S. Millerstatic void macvlan_set_lockdep_class(struct net_device *dev) 443c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller{ 444cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller lockdep_set_class(&dev->addr_list_lock, 445cf508b1211dbe576778ff445ea1b4b0bcfa5c4eaDavid S. Miller &macvlan_netdev_addr_lock_key); 446e8a0464cc950972824e2e128028ae3db666ec1edDavid S. Miller netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL); 447c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller} 448c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 449b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_init(struct net_device *dev) 450b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 451b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 452b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy const struct net_device *lowerdev = vlan->lowerdev; 453b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 454b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->state = (dev->state & ~MACVLAN_STATE_MASK) | 455b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy (lowerdev->state & MACVLAN_STATE_MASK); 456b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->features = lowerdev->features & MACVLAN_FEATURES; 4578ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet dev->features |= NETIF_F_LLTX; 4588c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy dev->gso_max_size = lowerdev->gso_max_size; 459b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->iflink = lowerdev->ifindex; 460ef5c89967d50042b29937fb724e057c1aa3c5207sg.tweak@gmail.com dev->hard_header_len = lowerdev->hard_header_len; 461b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 462c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller macvlan_set_lockdep_class(dev); 463c773e847ea8f6812804e40f52399c6921a00eab1David S. Miller 4648ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet vlan->pcpu_stats = alloc_percpu(struct macvlan_pcpu_stats); 4658ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (!vlan->pcpu_stats) 466fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return -ENOMEM; 467fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 468b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 469b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 470b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 471fccaf71011b171883efee5bae321eac4760584d1Eric Dumazetstatic void macvlan_uninit(struct net_device *dev) 472fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 473fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 474d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman struct macvlan_port *port = vlan->port; 475fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4768ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet free_percpu(vlan->pcpu_stats); 477d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman 478d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 479d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 480d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman macvlan_port_destroy(port->dev); 481fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 482fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 48328172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazetstatic struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, 48428172739f0a276eb8d6ca917b3974c2edb036da3Eric Dumazet struct rtnl_link_stats64 *stats) 485fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet{ 486fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet struct macvlan_dev *vlan = netdev_priv(dev); 487fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 4888ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet if (vlan->pcpu_stats) { 4898ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet struct macvlan_pcpu_stats *p; 4908ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 4918ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet u32 rx_errors = 0, tx_dropped = 0; 492bc66154efe163a80f269d448572f7906756e9338Eric Dumazet unsigned int start; 493fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet int i; 494fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 495fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet for_each_possible_cpu(i) { 4968ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet p = per_cpu_ptr(vlan->pcpu_stats, i); 497bc66154efe163a80f269d448572f7906756e9338Eric Dumazet do { 498bc66154efe163a80f269d448572f7906756e9338Eric Dumazet start = u64_stats_fetch_begin_bh(&p->syncp); 499bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_packets = p->rx_packets; 500bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_bytes = p->rx_bytes; 501bc66154efe163a80f269d448572f7906756e9338Eric Dumazet rx_multicast = p->rx_multicast; 5028ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_packets = p->tx_packets; 5038ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_bytes = p->tx_bytes; 504bc66154efe163a80f269d448572f7906756e9338Eric Dumazet } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 5058ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet 5068ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_packets += rx_packets; 5078ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_bytes += rx_bytes; 5088ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->multicast += rx_multicast; 5098ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_packets += tx_packets; 5108ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_bytes += tx_bytes; 5118ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet /* rx_errors & tx_dropped are u32, updated 5128ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet * without syncp protection. 5138ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet */ 5148ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet rx_errors += p->rx_errors; 5158ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet tx_dropped += p->tx_dropped; 516fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 5178ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_errors = rx_errors; 5188ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->rx_dropped = rx_errors; 5198ffab51b3dfc54876f145f15b351c41f3f703195Eric Dumazet stats->tx_dropped = tx_dropped; 520fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet } 521fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet return stats; 522fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet} 523fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet 5248e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_add_vid(struct net_device *dev, 5258d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend unsigned short vid) 5268d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5278d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5288d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5298d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 53087002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko return vlan_vid_add(lowerdev, vid); 5318d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5328d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 5338e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirkostatic int macvlan_vlan_rx_kill_vid(struct net_device *dev, 5348d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend unsigned short vid) 5358d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend{ 5368d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct macvlan_dev *vlan = netdev_priv(dev); 5378d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend struct net_device *lowerdev = vlan->lowerdev; 5388d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 53987002b03baabd2b8f6281ab6411ed88d24958de1Jiri Pirko vlan_vid_del(lowerdev, vid); 5408e586137e6b63af1e881b328466ab5ffbe562510Jiri Pirko return 0; 5418d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend} 5428d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend 543b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_ethtool_get_drvinfo(struct net_device *dev, 544b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct ethtool_drvinfo *drvinfo) 545b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 546b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->driver, 32, "macvlan"); 547b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy snprintf(drvinfo->version, 32, "0.1"); 548b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 549b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 5509edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemmingerstatic int macvlan_ethtool_get_settings(struct net_device *dev, 5519edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger struct ethtool_cmd *cmd) 5529edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger{ 5539edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger const struct macvlan_dev *vlan = netdev_priv(dev); 5544bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko 5554bc71cb983fd2844e603bf633df2bb53385182d2Jiri Pirko return __ethtool_get_settings(vlan->lowerdev, cmd); 5569edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger} 5579edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger 558b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic const struct ethtool_ops macvlan_ethtool_ops = { 559b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_link = ethtool_op_get_link, 5609edb8bb68b5ea63061ba833831b00c229ac9fbd2Stephen Hemminger .get_settings = macvlan_ethtool_get_settings, 561b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .get_drvinfo = macvlan_ethtool_get_drvinfo, 562b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 563b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 56454a30c975b6b27c0c9268461b647576b146d39bbStephen Hemmingerstatic const struct net_device_ops macvlan_netdev_ops = { 56554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_init = macvlan_init, 566fccaf71011b171883efee5bae321eac4760584d1Eric Dumazet .ndo_uninit = macvlan_uninit, 56754a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_open = macvlan_open, 56854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_stop = macvlan_stop, 569008298231abbeb91bc7be9e8b078607b816d1a4aStephen Hemminger .ndo_start_xmit = macvlan_start_xmit, 57054a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_mtu = macvlan_change_mtu, 57154a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_change_rx_flags = macvlan_change_rx_flags, 57254a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_set_mac_address = macvlan_set_mac_address, 573afc4b13df143122f99a0eb10bfefb216c2806de0Jiri Pirko .ndo_set_rx_mode = macvlan_set_multicast_list, 574bc66154efe163a80f269d448572f7906756e9338Eric Dumazet .ndo_get_stats64 = macvlan_dev_get_stats64, 57554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger .ndo_validate_addr = eth_validate_addr, 5768d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, 5778d13e670d3fb83f4668c9e37196c3bbf5b9f094cJohn Fastabend .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, 57854a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger}; 57954a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger 5808a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xuvoid macvlan_common_setup(struct net_device *dev) 581b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 582b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy ether_setup(dev); 583b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 584550fd08c2cebad61c548def135f67aba284c6162Neil Horman dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 58554a30c975b6b27c0c9268461b647576b146d39bbStephen Hemminger dev->netdev_ops = &macvlan_netdev_ops; 586b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->destructor = free_netdev; 5873b04ddde02cf1b6f14f2697da5c20eca5715017fStephen Hemminger dev->header_ops = &macvlan_hard_header_ops, 588b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->ethtool_ops = &macvlan_ethtool_ops; 5898a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu} 5908a35747a5d13b99e076b0222729e0caa48cb69b6Herbert XuEXPORT_SYMBOL_GPL(macvlan_common_setup); 5918a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu 5928a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xustatic void macvlan_setup(struct net_device *dev) 5938a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu{ 5948a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu macvlan_common_setup(dev); 595b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->tx_queue_len = 0; 596b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 597b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 598b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_port_create(struct net_device *dev) 599b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 600b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 601b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned int i; 602ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko int err; 603b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 604b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) 605b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 606b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 607b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port = kzalloc(sizeof(*port), GFP_KERNEL); 608b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (port == NULL) 609b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENOMEM; 610b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 611eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = false; 612b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy port->dev = dev; 613b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_LIST_HEAD(&port->vlans); 614b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy for (i = 0; i < MACVLAN_HASH_SIZE; i++) 615b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy INIT_HLIST_HEAD(&port->vlan_hash[i]); 616ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko 617a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); 618a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (err) 619ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko kfree(port); 620d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet else 621d93515611bbc70c2fe4db232e5feb448ed8e4cc9Eric Dumazet dev->priv_flags |= IFF_MACVLAN_PORT; 622ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko return err; 623b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 624b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 625b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void macvlan_port_destroy(struct net_device *dev) 626b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 627a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko struct macvlan_port *port = macvlan_port_get(dev); 628b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 629a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko dev->priv_flags &= ~IFF_MACVLAN_PORT; 630ab95bfe01f9872459c8678572ccadbf646badad0Jiri Pirko netdev_rx_handler_unregister(dev); 6316e070aecd9e304264a6b8655f49aa7e6db0e55f2Lai Jiangshan kfree_rcu(port, rcu); 632b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 633b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 634b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) 635b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 636b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (tb[IFLA_ADDRESS]) { 637b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 638b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 639b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 640b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EADDRNOTAVAIL; 641b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 64227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 64327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) { 64427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { 64527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_PRIVATE: 64627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_VEPA: 64727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann case MACVLAN_MODE_BRIDGE: 648eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala case MACVLAN_MODE_PASSTHRU: 64927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann break; 65027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann default: 65127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EINVAL; 65227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 65327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann } 654b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 655b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 656b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 657fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_common_newlink(struct net *src_net, struct net_device *dev, 658fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[], 659fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*receive)(struct sk_buff *skb), 660fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann int (*forward)(struct net_device *dev, 661fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct sk_buff *skb)) 662b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 663b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 664b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 665b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *lowerdev; 666b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 667b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 668b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_LINK]) 669b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 670b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 67181adee47dfb608df3ad0b91d230fb3cef75f0060Eric W. Biederman lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); 672b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (lowerdev == NULL) 673b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -ENODEV; 674b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 675b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman /* When creating macvlans on top of other macvlans - use 676b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman * the real device as the lowerdev. 677a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy */ 678b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) { 679b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman struct macvlan_dev *lowervlan = netdev_priv(lowerdev); 680b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman lowerdev = lowervlan->lowerdev; 681b0832a2961022a076c812384435b5f0290b3fc91Eric Biederman } 682a6ca5f1dbe40470fcb1ecc921769d792a1e77ed9Patrick McHardy 683b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_MTU]) 684b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy dev->mtu = lowerdev->mtu; 685b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy else if (dev->mtu > lowerdev->mtu) 686b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return -EINVAL; 687b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 688b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (!tb[IFLA_ADDRESS]) 689b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy random_ether_addr(dev->dev_addr); 690b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 691a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(lowerdev)) { 692b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = macvlan_port_create(lowerdev); 693b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 694b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 695b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 696a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(lowerdev); 697b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 698eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala /* Only 1 macvlan device can be created in passthru mode */ 699eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (port->passthru) 700eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 701eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 702b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->lowerdev = lowerdev; 703b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev = dev; 704b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->port = port; 705fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->receive = receive; 706fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann vlan->forward = forward; 707b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 70827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = MACVLAN_MODE_VEPA; 70927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 71027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 71127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 712eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala if (vlan->mode == MACVLAN_MODE_PASSTHRU) { 713d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (port->count) 714eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala return -EINVAL; 715eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala port->passthru = true; 716eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); 717eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala } 718eb06acdc85585f28864261f28659157848762ee4Sridhar Samudrala 719d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count += 1; 720b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy err = register_netdevice(dev); 721b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 722f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko goto destroy_port; 723b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 724b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_add_tail(&vlan->list, &port->vlans); 725fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(lowerdev, dev); 726f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 727b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 728f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 729f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirkodestroy_port: 730d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman port->count -= 1; 731d5cd92448fded12c91f7574e49747c5f7d975a8dEric W. Biederman if (!port->count) 732f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko macvlan_port_destroy(lowerdev); 733f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko 734f16d3d57486cd079b29ae7a6c3b31c90e69c9c44Jiri Pirko return err; 735b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 736fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_common_newlink); 737b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 738fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic int macvlan_newlink(struct net *src_net, struct net_device *dev, 739fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 740fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 741fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return macvlan_common_newlink(src_net, dev, tb, data, 742fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann netif_rx, 743fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann dev_forward_skb); 744fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann} 745fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 746fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannvoid macvlan_dellink(struct net_device *dev, struct list_head *head) 747b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 748b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan = netdev_priv(dev); 749b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 750b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_del(&vlan->list); 75123289a37e2b127dfc4de1313fba15bb4c9f0cd5bEric Dumazet unregister_netdevice_queue(dev, head); 752b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 753fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_dellink); 754b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 75527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_changelink(struct net_device *dev, 75627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct nlattr *tb[], struct nlattr *data[]) 75727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 75827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 75927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann if (data && data[IFLA_MACVLAN_MODE]) 76027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); 76127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 76227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 76327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 76427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic size_t macvlan_get_size(const struct net_device *dev) 76527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 76627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return nla_total_size(4); 76727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 76827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 76927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic int macvlan_fill_info(struct sk_buff *skb, 77027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann const struct net_device *dev) 77127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann{ 77227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann struct macvlan_dev *vlan = netdev_priv(dev); 77327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 77427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann NLA_PUT_U32(skb, IFLA_MACVLAN_MODE, vlan->mode); 77527c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return 0; 77627c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 77727c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannnla_put_failure: 77827c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann return -EMSGSIZE; 77927c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann} 78027c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 78127c0b1a850cdea6298f573d835782f3337be913cArnd Bergmannstatic const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { 78227c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, 78327c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann}; 78427c0b1a850cdea6298f573d835782f3337be913cArnd Bergmann 785fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannint macvlan_link_register(struct rtnl_link_ops *ops) 786fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann{ 787fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann /* common fields */ 788fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->priv_size = sizeof(struct macvlan_dev); 789fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->validate = macvlan_validate; 790fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->maxtype = IFLA_MACVLAN_MAX; 791fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->policy = macvlan_policy; 792fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->changelink = macvlan_changelink; 793fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->get_size = macvlan_get_size; 794fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann ops->fill_info = macvlan_fill_info; 795fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 796fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann return rtnl_link_register(ops); 797fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann}; 798fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd BergmannEXPORT_SYMBOL_GPL(macvlan_link_register); 799fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann 800fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmannstatic struct rtnl_link_ops macvlan_link_ops = { 801b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .kind = "macvlan", 8028a35747a5d13b99e076b0222729e0caa48cb69b6Herbert Xu .setup = macvlan_setup, 803b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .newlink = macvlan_newlink, 804b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .dellink = macvlan_dellink, 805b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 806b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 807b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int macvlan_device_event(struct notifier_block *unused, 808b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unsigned long event, void *ptr) 809b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 810b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct net_device *dev = ptr; 811b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_dev *vlan, *next; 812b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy struct macvlan_port *port; 813226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet LIST_HEAD(list_kill); 814b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 815a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko if (!macvlan_port_exists(dev)) 816b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 817b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 818a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko port = macvlan_port_get(dev); 819a35e2c1b6d90544b3c688783869817628e5f9607Jiri Pirko 820b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy switch (event) { 821b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_CHANGE: 822b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) 823fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney netif_stacked_transfer_operstate(vlan->lowerdev, 824fc4a7489663250360cd40d5adf06a08d1c5d54dfPatrick Mullaney vlan->dev); 825b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 826b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_FEAT_CHANGE: 827b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry(vlan, &port->vlans, list) { 828b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy vlan->dev->features = dev->features & MACVLAN_FEATURES; 8298c2acc53fd7987493f11640e266cf7130591e764Patrick McHardy vlan->dev->gso_max_size = dev->gso_max_size; 830b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy netdev_features_change(vlan->dev); 831b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 832b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 833b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy case NETDEV_UNREGISTER: 8343b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter /* twiddle thumbs on netns device moves */ 8353b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter if (dev->reg_state != NETREG_UNREGISTERING) 8363b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter break; 8373b27e105550f7c4a79ecb6d6a9c49c651c59ae9bDavid Lamparter 838b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy list_for_each_entry_safe(vlan, next, &port->vlans, list) 839226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); 840226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet unregister_netdevice_many(&list_kill); 841226bd3411471af42f7edbdfaf73f2d54ebb62a66Eric Dumazet list_del(&list_kill); 842b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy break; 8431c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 8441c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko /* Forbid underlaying device to change its type. */ 8451c01fe14a87332cc88266fbd6e598319322eb96fJiri Pirko return NOTIFY_BAD; 846b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy } 847b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return NOTIFY_DONE; 848b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 849b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 850b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic struct notifier_block macvlan_notifier_block __read_mostly = { 851b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy .notifier_call = macvlan_device_event, 852b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy}; 853b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 854b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic int __init macvlan_init_module(void) 855b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 856b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy int err; 857b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 858b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy register_netdevice_notifier(&macvlan_notifier_block); 859b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 860fc0663d6b5e6d8e9b57f872a644c0aafd82361b7Arnd Bergmann err = macvlan_link_register(&macvlan_link_ops); 861b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy if (err < 0) 862b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy goto err1; 863b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return 0; 864b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyerr1: 865b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 866b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy return err; 867b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 868b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 869b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardystatic void __exit macvlan_cleanup_module(void) 870b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy{ 871b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy rtnl_link_unregister(&macvlan_link_ops); 872b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy unregister_netdevice_notifier(&macvlan_notifier_block); 873b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy} 874b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 875b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_init(macvlan_init_module); 876b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardymodule_exit(macvlan_cleanup_module); 877b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardy 878b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_LICENSE("GPL"); 879b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 880b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_DESCRIPTION("Driver for MAC address based VLANs"); 881b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53Patrick McHardyMODULE_ALIAS_RTNL_LINK("macvlan"); 882