Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2007 Patrick McHardy <kaber@trash.net> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License as |
| 6 | * published by the Free Software Foundation; either version 2 of |
| 7 | * the License, or (at your option) any later version. |
| 8 | * |
| 9 | * The code this is based on carried the following copyright notice: |
| 10 | * --- |
| 11 | * (C) Copyright 2001-2006 |
| 12 | * Alex Zeffertt, Cambridge Broadband Ltd, ajz@cambridgebroadband.com |
| 13 | * Re-worked by Ben Greear <greearb@candelatech.com> |
| 14 | * --- |
| 15 | */ |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/types.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/string.h> |
Franck Bui-Huu | 8252474 | 2008-05-12 21:21:05 +0200 | [diff] [blame] | 23 | #include <linux/rculist.h> |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 24 | #include <linux/notifier.h> |
| 25 | #include <linux/netdevice.h> |
| 26 | #include <linux/etherdevice.h> |
| 27 | #include <linux/ethtool.h> |
| 28 | #include <linux/if_arp.h> |
Jiri Pirko | 87002b0 | 2011-12-08 04:11:17 +0000 | [diff] [blame] | 29 | #include <linux/if_vlan.h> |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 30 | #include <linux/if_link.h> |
| 31 | #include <linux/if_macvlan.h> |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 32 | #include <linux/hash.h> |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 33 | #include <linux/workqueue.h> |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 34 | #include <net/rtnetlink.h> |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 35 | #include <net/xfrm.h> |
dingtianhong | 688cea8 | 2014-05-30 16:00:56 +0800 | [diff] [blame] | 36 | #include <linux/netpoll.h> |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 37 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 38 | #define MACVLAN_HASH_BITS 8 |
| 39 | #define MACVLAN_HASH_SIZE (1<<MACVLAN_HASH_BITS) |
Nicolas Dichtel | 07d92d5 | 2014-09-17 10:08:08 +0200 | [diff] [blame] | 40 | #define MACVLAN_BC_QUEUE_LEN 1000 |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 41 | |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 42 | #define MACVLAN_F_PASSTHRU 1 |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 43 | #define MACVLAN_F_ADDRCHANGE 2 |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 44 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 45 | struct macvlan_port { |
| 46 | struct net_device *dev; |
| 47 | struct hlist_head vlan_hash[MACVLAN_HASH_SIZE]; |
| 48 | struct list_head vlans; |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 49 | struct sk_buff_head bc_queue; |
| 50 | struct work_struct bc_work; |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 51 | u32 flags; |
David S. Miller | 5e3c516 | 2014-08-14 14:32:49 -0700 | [diff] [blame] | 52 | int count; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 53 | struct hlist_head vlan_source_hash[MACVLAN_HASH_SIZE]; |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 54 | DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ); |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 55 | unsigned char perm_addr[ETH_ALEN]; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 56 | }; |
| 57 | |
| 58 | struct macvlan_source_entry { |
| 59 | struct hlist_node hlist; |
| 60 | struct macvlan_dev *vlan; |
| 61 | unsigned char addr[6+2] __aligned(sizeof(u16)); |
| 62 | struct rcu_head rcu; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 63 | }; |
| 64 | |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 65 | struct macvlan_skb_cb { |
| 66 | const struct macvlan_dev *src; |
| 67 | }; |
| 68 | |
| 69 | #define MACVLAN_SKB_CB(__skb) ((struct macvlan_skb_cb *)&((__skb)->cb[0])) |
| 70 | |
Eric W. Biederman | d5cd9244 | 2011-03-21 18:22:22 -0700 | [diff] [blame] | 71 | static void macvlan_port_destroy(struct net_device *dev); |
| 72 | |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 73 | static inline bool macvlan_passthru(const struct macvlan_port *port) |
| 74 | { |
| 75 | return port->flags & MACVLAN_F_PASSTHRU; |
| 76 | } |
| 77 | |
| 78 | static inline void macvlan_set_passthru(struct macvlan_port *port) |
| 79 | { |
| 80 | port->flags |= MACVLAN_F_PASSTHRU; |
| 81 | } |
| 82 | |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 83 | static inline bool macvlan_addr_change(const struct macvlan_port *port) |
| 84 | { |
| 85 | return port->flags & MACVLAN_F_ADDRCHANGE; |
| 86 | } |
| 87 | |
| 88 | static inline void macvlan_set_addr_change(struct macvlan_port *port) |
| 89 | { |
| 90 | port->flags |= MACVLAN_F_ADDRCHANGE; |
| 91 | } |
| 92 | |
| 93 | static inline void macvlan_clear_addr_change(struct macvlan_port *port) |
| 94 | { |
| 95 | port->flags &= ~MACVLAN_F_ADDRCHANGE; |
| 96 | } |
| 97 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 98 | /* Hash Ethernet address */ |
| 99 | static u32 macvlan_eth_hash(const unsigned char *addr) |
| 100 | { |
| 101 | u64 value = get_unaligned((u64 *)addr); |
| 102 | |
| 103 | /* only want 6 bytes */ |
| 104 | #ifdef __BIG_ENDIAN |
| 105 | value >>= 16; |
| 106 | #else |
| 107 | value <<= 16; |
| 108 | #endif |
| 109 | return hash_64(value, MACVLAN_HASH_BITS); |
| 110 | } |
| 111 | |
Eric Dumazet | e052f7e | 2013-03-30 10:08:44 +0000 | [diff] [blame] | 112 | static struct macvlan_port *macvlan_port_get_rcu(const struct net_device *dev) |
| 113 | { |
| 114 | return rcu_dereference(dev->rx_handler_data); |
| 115 | } |
| 116 | |
| 117 | static struct macvlan_port *macvlan_port_get_rtnl(const struct net_device *dev) |
| 118 | { |
| 119 | return rtnl_dereference(dev->rx_handler_data); |
| 120 | } |
| 121 | |
Jiri Pirko | a35e2c1 | 2010-06-15 03:27:57 +0000 | [diff] [blame] | 122 | #define macvlan_port_exists(dev) (dev->priv_flags & IFF_MACVLAN_PORT) |
| 123 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 124 | static struct macvlan_dev *macvlan_hash_lookup(const struct macvlan_port *port, |
| 125 | const unsigned char *addr) |
| 126 | { |
| 127 | struct macvlan_dev *vlan; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 128 | u32 idx = macvlan_eth_hash(addr); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 129 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 130 | hlist_for_each_entry_rcu(vlan, &port->vlan_hash[idx], hlist) { |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 131 | if (ether_addr_equal_64bits(vlan->dev->dev_addr, addr)) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 132 | return vlan; |
| 133 | } |
| 134 | return NULL; |
| 135 | } |
| 136 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 137 | static struct macvlan_source_entry *macvlan_hash_lookup_source( |
| 138 | const struct macvlan_dev *vlan, |
| 139 | const unsigned char *addr) |
| 140 | { |
| 141 | struct macvlan_source_entry *entry; |
| 142 | u32 idx = macvlan_eth_hash(addr); |
| 143 | struct hlist_head *h = &vlan->port->vlan_source_hash[idx]; |
| 144 | |
| 145 | hlist_for_each_entry_rcu(entry, h, hlist) { |
| 146 | if (ether_addr_equal_64bits(entry->addr, addr) && |
| 147 | entry->vlan == vlan) |
| 148 | return entry; |
| 149 | } |
| 150 | return NULL; |
| 151 | } |
| 152 | |
| 153 | static int macvlan_hash_add_source(struct macvlan_dev *vlan, |
| 154 | const unsigned char *addr) |
| 155 | { |
| 156 | struct macvlan_port *port = vlan->port; |
| 157 | struct macvlan_source_entry *entry; |
| 158 | struct hlist_head *h; |
| 159 | |
| 160 | entry = macvlan_hash_lookup_source(vlan, addr); |
| 161 | if (entry) |
| 162 | return 0; |
| 163 | |
| 164 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); |
| 165 | if (!entry) |
| 166 | return -ENOMEM; |
| 167 | |
| 168 | ether_addr_copy(entry->addr, addr); |
| 169 | entry->vlan = vlan; |
| 170 | h = &port->vlan_source_hash[macvlan_eth_hash(addr)]; |
| 171 | hlist_add_head_rcu(&entry->hlist, h); |
| 172 | vlan->macaddr_count++; |
| 173 | |
| 174 | return 0; |
| 175 | } |
| 176 | |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 177 | static void macvlan_hash_add(struct macvlan_dev *vlan) |
| 178 | { |
| 179 | struct macvlan_port *port = vlan->port; |
| 180 | const unsigned char *addr = vlan->dev->dev_addr; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 181 | u32 idx = macvlan_eth_hash(addr); |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 182 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 183 | hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[idx]); |
| 184 | } |
| 185 | |
| 186 | static void macvlan_hash_del_source(struct macvlan_source_entry *entry) |
| 187 | { |
| 188 | hlist_del_rcu(&entry->hlist); |
| 189 | kfree_rcu(entry, rcu); |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 190 | } |
| 191 | |
Eric Dumazet | 449f454 | 2011-05-19 12:24:16 +0000 | [diff] [blame] | 192 | static void macvlan_hash_del(struct macvlan_dev *vlan, bool sync) |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 193 | { |
| 194 | hlist_del_rcu(&vlan->hlist); |
Eric Dumazet | 449f454 | 2011-05-19 12:24:16 +0000 | [diff] [blame] | 195 | if (sync) |
| 196 | synchronize_rcu(); |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | static void macvlan_hash_change_addr(struct macvlan_dev *vlan, |
| 200 | const unsigned char *addr) |
| 201 | { |
Eric Dumazet | 449f454 | 2011-05-19 12:24:16 +0000 | [diff] [blame] | 202 | macvlan_hash_del(vlan, true); |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 203 | /* Now that we are unhashed it is safe to change the device |
| 204 | * address without confusing packet delivery. |
| 205 | */ |
| 206 | memcpy(vlan->dev->dev_addr, addr, ETH_ALEN); |
| 207 | macvlan_hash_add(vlan); |
| 208 | } |
| 209 | |
Gao Feng | d94d025 | 2016-11-14 08:24:19 +0800 | [diff] [blame] | 210 | static bool macvlan_addr_busy(const struct macvlan_port *port, |
| 211 | const unsigned char *addr) |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 212 | { |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 213 | /* Test to see if the specified address is |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 214 | * currently in use by the underlying device or |
| 215 | * another macvlan. |
| 216 | */ |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 217 | if (!macvlan_passthru(port) && !macvlan_addr_change(port) && |
Vlad Yasevich | e696cda | 2017-06-21 07:59:17 -0400 | [diff] [blame] | 218 | ether_addr_equal_64bits(port->dev->dev_addr, addr)) |
Gao Feng | d94d025 | 2016-11-14 08:24:19 +0800 | [diff] [blame] | 219 | return true; |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 220 | |
| 221 | if (macvlan_hash_lookup(port, addr)) |
Gao Feng | d94d025 | 2016-11-14 08:24:19 +0800 | [diff] [blame] | 222 | return true; |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 223 | |
Gao Feng | d94d025 | 2016-11-14 08:24:19 +0800 | [diff] [blame] | 224 | return false; |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 227 | |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 228 | static int macvlan_broadcast_one(struct sk_buff *skb, |
| 229 | const struct macvlan_dev *vlan, |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 230 | const struct ethhdr *eth, bool local) |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 231 | { |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 232 | struct net_device *dev = vlan->dev; |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 233 | |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 234 | if (local) |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 235 | return __dev_forward_skb(dev, skb); |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 236 | |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 237 | skb->dev = dev; |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 238 | if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 239 | skb->pkt_type = PACKET_BROADCAST; |
| 240 | else |
| 241 | skb->pkt_type = PACKET_MULTICAST; |
| 242 | |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 243 | return 0; |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 244 | } |
| 245 | |
Eric Dumazet | 3807ff5 | 2013-02-07 16:41:02 +0000 | [diff] [blame] | 246 | static u32 macvlan_hash_mix(const struct macvlan_dev *vlan) |
| 247 | { |
| 248 | return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); |
| 249 | } |
| 250 | |
| 251 | |
| 252 | static unsigned int mc_hash(const struct macvlan_dev *vlan, |
| 253 | const unsigned char *addr) |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 254 | { |
| 255 | u32 val = __get_unaligned_cpu32(addr + 2); |
| 256 | |
Eric Dumazet | 3807ff5 | 2013-02-07 16:41:02 +0000 | [diff] [blame] | 257 | val ^= macvlan_hash_mix(vlan); |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 258 | return hash_32(val, MACVLAN_MC_FILTER_BITS); |
| 259 | } |
| 260 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 261 | static void macvlan_broadcast(struct sk_buff *skb, |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 262 | const struct macvlan_port *port, |
| 263 | struct net_device *src, |
| 264 | enum macvlan_mode mode) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 265 | { |
| 266 | const struct ethhdr *eth = eth_hdr(skb); |
| 267 | const struct macvlan_dev *vlan; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 268 | struct sk_buff *nskb; |
| 269 | unsigned int i; |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 270 | int err; |
Eric Dumazet | 3807ff5 | 2013-02-07 16:41:02 +0000 | [diff] [blame] | 271 | unsigned int hash; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 272 | |
Patrick McHardy | efbbced | 2008-11-26 15:30:48 -0800 | [diff] [blame] | 273 | if (skb->protocol == htons(ETH_P_PAUSE)) |
| 274 | return; |
| 275 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 276 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 277 | hlist_for_each_entry_rcu(vlan, &port->vlan_hash[i], hlist) { |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 278 | if (vlan->dev == src || !(vlan->mode & mode)) |
| 279 | continue; |
| 280 | |
Eric Dumazet | 3807ff5 | 2013-02-07 16:41:02 +0000 | [diff] [blame] | 281 | hash = mc_hash(vlan, eth->h_dest); |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 282 | if (!test_bit(hash, vlan->mc_filter)) |
| 283 | continue; |
Herbert Xu | de9e8f3 | 2013-09-07 12:27:11 +1000 | [diff] [blame] | 284 | |
| 285 | err = NET_RX_DROP; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 286 | nskb = skb_clone(skb, GFP_ATOMIC); |
Herbert Xu | de9e8f3 | 2013-09-07 12:27:11 +1000 | [diff] [blame] | 287 | if (likely(nskb)) |
| 288 | err = macvlan_broadcast_one( |
| 289 | nskb, vlan, eth, |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 290 | mode == MACVLAN_MODE_BRIDGE) ?: |
| 291 | netif_rx_ni(nskb); |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 292 | macvlan_count_rx(vlan, skb->len + ETH_HLEN, |
jbaron@akamai.com | 4c97993 | 2014-10-10 03:13:27 +0000 | [diff] [blame] | 293 | err == NET_RX_SUCCESS, true); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 294 | } |
| 295 | } |
| 296 | } |
| 297 | |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 298 | static void macvlan_process_broadcast(struct work_struct *w) |
| 299 | { |
| 300 | struct macvlan_port *port = container_of(w, struct macvlan_port, |
| 301 | bc_work); |
| 302 | struct sk_buff *skb; |
| 303 | struct sk_buff_head list; |
| 304 | |
Eric Dumazet | fe0ca73 | 2014-10-22 19:43:46 -0700 | [diff] [blame] | 305 | __skb_queue_head_init(&list); |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 306 | |
| 307 | spin_lock_bh(&port->bc_queue.lock); |
| 308 | skb_queue_splice_tail_init(&port->bc_queue, &list); |
| 309 | spin_unlock_bh(&port->bc_queue.lock); |
| 310 | |
| 311 | while ((skb = __skb_dequeue(&list))) { |
| 312 | const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; |
| 313 | |
| 314 | rcu_read_lock(); |
| 315 | |
| 316 | if (!src) |
| 317 | /* frame comes from an external address */ |
| 318 | macvlan_broadcast(skb, port, NULL, |
| 319 | MACVLAN_MODE_PRIVATE | |
| 320 | MACVLAN_MODE_VEPA | |
| 321 | MACVLAN_MODE_PASSTHRU| |
| 322 | MACVLAN_MODE_BRIDGE); |
| 323 | else if (src->mode == MACVLAN_MODE_VEPA) |
| 324 | /* flood to everyone except source */ |
| 325 | macvlan_broadcast(skb, port, src->dev, |
| 326 | MACVLAN_MODE_VEPA | |
| 327 | MACVLAN_MODE_BRIDGE); |
| 328 | else |
| 329 | /* |
| 330 | * flood only to VEPA ports, bridge ports |
| 331 | * already saw the frame on the way out. |
| 332 | */ |
| 333 | macvlan_broadcast(skb, port, src->dev, |
| 334 | MACVLAN_MODE_VEPA); |
| 335 | |
| 336 | rcu_read_unlock(); |
| 337 | |
Herbert Xu | 260916d | 2016-06-01 11:43:00 +0800 | [diff] [blame] | 338 | if (src) |
| 339 | dev_put(src->dev); |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 340 | kfree_skb(skb); |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | static void macvlan_broadcast_enqueue(struct macvlan_port *port, |
Herbert Xu | 260916d | 2016-06-01 11:43:00 +0800 | [diff] [blame] | 345 | const struct macvlan_dev *src, |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 346 | struct sk_buff *skb) |
| 347 | { |
Herbert Xu | e676f19 | 2014-04-22 17:15:34 +0800 | [diff] [blame] | 348 | struct sk_buff *nskb; |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 349 | int err = -ENOMEM; |
| 350 | |
Herbert Xu | e676f19 | 2014-04-22 17:15:34 +0800 | [diff] [blame] | 351 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 352 | if (!nskb) |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 353 | goto err; |
| 354 | |
Herbert Xu | 260916d | 2016-06-01 11:43:00 +0800 | [diff] [blame] | 355 | MACVLAN_SKB_CB(nskb)->src = src; |
| 356 | |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 357 | spin_lock(&port->bc_queue.lock); |
Nicolas Dichtel | 07d92d5 | 2014-09-17 10:08:08 +0200 | [diff] [blame] | 358 | if (skb_queue_len(&port->bc_queue) < MACVLAN_BC_QUEUE_LEN) { |
Herbert Xu | 260916d | 2016-06-01 11:43:00 +0800 | [diff] [blame] | 359 | if (src) |
| 360 | dev_hold(src->dev); |
Herbert Xu | e676f19 | 2014-04-22 17:15:34 +0800 | [diff] [blame] | 361 | __skb_queue_tail(&port->bc_queue, nskb); |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 362 | err = 0; |
| 363 | } |
| 364 | spin_unlock(&port->bc_queue.lock); |
| 365 | |
| 366 | if (err) |
Herbert Xu | e676f19 | 2014-04-22 17:15:34 +0800 | [diff] [blame] | 367 | goto free_nskb; |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 368 | |
| 369 | schedule_work(&port->bc_work); |
| 370 | return; |
| 371 | |
Herbert Xu | e676f19 | 2014-04-22 17:15:34 +0800 | [diff] [blame] | 372 | free_nskb: |
| 373 | kfree_skb(nskb); |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 374 | err: |
| 375 | atomic_long_inc(&skb->dev->rx_dropped); |
| 376 | } |
| 377 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 378 | static void macvlan_flush_sources(struct macvlan_port *port, |
| 379 | struct macvlan_dev *vlan) |
| 380 | { |
| 381 | int i; |
| 382 | |
| 383 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { |
| 384 | struct hlist_node *h, *n; |
| 385 | |
| 386 | hlist_for_each_safe(h, n, &port->vlan_source_hash[i]) { |
| 387 | struct macvlan_source_entry *entry; |
| 388 | |
| 389 | entry = hlist_entry(h, struct macvlan_source_entry, |
| 390 | hlist); |
| 391 | if (entry->vlan == vlan) |
| 392 | macvlan_hash_del_source(entry); |
| 393 | } |
| 394 | } |
| 395 | vlan->macaddr_count = 0; |
| 396 | } |
| 397 | |
| 398 | static void macvlan_forward_source_one(struct sk_buff *skb, |
| 399 | struct macvlan_dev *vlan) |
| 400 | { |
| 401 | struct sk_buff *nskb; |
| 402 | struct net_device *dev; |
| 403 | int len; |
| 404 | int ret; |
| 405 | |
| 406 | dev = vlan->dev; |
| 407 | if (unlikely(!(dev->flags & IFF_UP))) |
| 408 | return; |
| 409 | |
| 410 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 411 | if (!nskb) |
| 412 | return; |
| 413 | |
| 414 | len = nskb->len + ETH_HLEN; |
| 415 | nskb->dev = dev; |
| 416 | nskb->pkt_type = PACKET_HOST; |
| 417 | |
| 418 | ret = netif_rx(nskb); |
jbaron@akamai.com | 4c97993 | 2014-10-10 03:13:27 +0000 | [diff] [blame] | 419 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | static void macvlan_forward_source(struct sk_buff *skb, |
| 423 | struct macvlan_port *port, |
| 424 | const unsigned char *addr) |
| 425 | { |
| 426 | struct macvlan_source_entry *entry; |
| 427 | u32 idx = macvlan_eth_hash(addr); |
| 428 | struct hlist_head *h = &port->vlan_source_hash[idx]; |
| 429 | |
| 430 | hlist_for_each_entry_rcu(entry, h, hlist) { |
| 431 | if (ether_addr_equal_64bits(entry->addr, addr)) |
Gao Feng | fc51f2b | 2016-11-21 08:26:38 +0800 | [diff] [blame] | 432 | macvlan_forward_source_one(skb, entry->vlan); |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 433 | } |
| 434 | } |
| 435 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 436 | /* called under rcu_read_lock() from netif_receive_skb */ |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 437 | static rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 438 | { |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 439 | struct macvlan_port *port; |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 440 | struct sk_buff *skb = *pskb; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 441 | const struct ethhdr *eth = eth_hdr(skb); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 442 | const struct macvlan_dev *vlan; |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 443 | const struct macvlan_dev *src; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 444 | struct net_device *dev; |
Sridhar Samudrala | ba01877 | 2010-07-27 09:10:07 +0000 | [diff] [blame] | 445 | unsigned int len = 0; |
jbaron@akamai.com | d1dd9119 | 2014-10-10 03:13:31 +0000 | [diff] [blame] | 446 | int ret; |
| 447 | rx_handler_result_t handle_res; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 448 | |
Jiri Pirko | a35e2c1 | 2010-06-15 03:27:57 +0000 | [diff] [blame] | 449 | port = macvlan_port_get_rcu(skb->dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 450 | if (is_multicast_ether_addr(eth->h_dest)) { |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 451 | unsigned int hash; |
| 452 | |
Eric W. Biederman | 19bcf9f | 2015-10-09 13:44:54 -0500 | [diff] [blame] | 453 | skb = ip_check_defrag(dev_net(skb->dev), skb, IP_DEFRAG_MACVLAN); |
Eric Dumazet | bc416d9 | 2011-10-06 10:28:31 +0000 | [diff] [blame] | 454 | if (!skb) |
| 455 | return RX_HANDLER_CONSUMED; |
Sabrina Dubroca | e639b8d | 2015-11-16 22:54:20 +0100 | [diff] [blame] | 456 | *pskb = skb; |
Eric Dumazet | 4ec7ac1 | 2012-01-23 05:38:59 +0000 | [diff] [blame] | 457 | eth = eth_hdr(skb); |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 458 | macvlan_forward_source(skb, port, eth->h_source); |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 459 | src = macvlan_hash_lookup(port, eth->h_source); |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 460 | if (src && src->mode != MACVLAN_MODE_VEPA && |
| 461 | src->mode != MACVLAN_MODE_BRIDGE) { |
stephen hemminger | 729e72a | 2011-11-02 12:11:53 +0000 | [diff] [blame] | 462 | /* forward to original port. */ |
| 463 | vlan = src; |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 464 | ret = macvlan_broadcast_one(skb, vlan, eth, 0) ?: |
| 465 | netif_rx(skb); |
jbaron@akamai.com | d1dd9119 | 2014-10-10 03:13:31 +0000 | [diff] [blame] | 466 | handle_res = RX_HANDLER_CONSUMED; |
stephen hemminger | 729e72a | 2011-11-02 12:11:53 +0000 | [diff] [blame] | 467 | goto out; |
| 468 | } |
| 469 | |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 470 | hash = mc_hash(NULL, eth->h_dest); |
| 471 | if (test_bit(hash, port->mc_filter)) |
| 472 | macvlan_broadcast_enqueue(port, src, skb); |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 473 | |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 474 | return RX_HANDLER_PASS; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 475 | } |
| 476 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 477 | macvlan_forward_source(skb, port, eth->h_source); |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 478 | if (macvlan_passthru(port)) |
Jiri Pirko | 233c7df | 2013-05-09 04:23:40 +0000 | [diff] [blame] | 479 | vlan = list_first_or_null_rcu(&port->vlans, |
| 480 | struct macvlan_dev, list); |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 481 | else |
| 482 | vlan = macvlan_hash_lookup(port, eth->h_dest); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 483 | if (vlan == NULL) |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 484 | return RX_HANDLER_PASS; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 485 | |
| 486 | dev = vlan->dev; |
| 487 | if (unlikely(!(dev->flags & IFF_UP))) { |
| 488 | kfree_skb(skb); |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 489 | return RX_HANDLER_CONSUMED; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 490 | } |
Arnd Bergmann | a1e514c | 2009-11-26 06:07:09 +0000 | [diff] [blame] | 491 | len = skb->len + ETH_HLEN; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 492 | skb = skb_share_check(skb, GFP_ATOMIC); |
jbaron@akamai.com | d1dd9119 | 2014-10-10 03:13:31 +0000 | [diff] [blame] | 493 | if (!skb) { |
| 494 | ret = NET_RX_DROP; |
| 495 | handle_res = RX_HANDLER_CONSUMED; |
Sridhar Samudrala | ba01877 | 2010-07-27 09:10:07 +0000 | [diff] [blame] | 496 | goto out; |
jbaron@akamai.com | d1dd9119 | 2014-10-10 03:13:31 +0000 | [diff] [blame] | 497 | } |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 498 | |
Sabrina Dubroca | e639b8d | 2015-11-16 22:54:20 +0100 | [diff] [blame] | 499 | *pskb = skb; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 500 | skb->dev = dev; |
| 501 | skb->pkt_type = PACKET_HOST; |
| 502 | |
jbaron@akamai.com | d1dd9119 | 2014-10-10 03:13:31 +0000 | [diff] [blame] | 503 | ret = NET_RX_SUCCESS; |
| 504 | handle_res = RX_HANDLER_ANOTHER; |
Sridhar Samudrala | ba01877 | 2010-07-27 09:10:07 +0000 | [diff] [blame] | 505 | out: |
jbaron@akamai.com | 4c97993 | 2014-10-10 03:13:27 +0000 | [diff] [blame] | 506 | macvlan_count_rx(vlan, len, ret == NET_RX_SUCCESS, false); |
jbaron@akamai.com | d1dd9119 | 2014-10-10 03:13:31 +0000 | [diff] [blame] | 507 | return handle_res; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 508 | } |
| 509 | |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 510 | static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) |
| 511 | { |
| 512 | const struct macvlan_dev *vlan = netdev_priv(dev); |
| 513 | const struct macvlan_port *port = vlan->port; |
| 514 | const struct macvlan_dev *dest; |
| 515 | |
| 516 | if (vlan->mode == MACVLAN_MODE_BRIDGE) { |
| 517 | const struct ethhdr *eth = (void *)skb->data; |
| 518 | |
| 519 | /* send to other bridge ports directly */ |
| 520 | if (is_multicast_ether_addr(eth->h_dest)) { |
| 521 | macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); |
| 522 | goto xmit_world; |
| 523 | } |
| 524 | |
| 525 | dest = macvlan_hash_lookup(port, eth->h_dest); |
| 526 | if (dest && dest->mode == MACVLAN_MODE_BRIDGE) { |
David Ward | a37dd33 | 2011-05-19 02:53:20 +0000 | [diff] [blame] | 527 | /* send to lowerdev first for its network taps */ |
David Ward | cb2d0f3 | 2011-09-18 12:53:20 +0000 | [diff] [blame] | 528 | dev_forward_skb(vlan->lowerdev, skb); |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 529 | |
| 530 | return NET_XMIT_SUCCESS; |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | xmit_world: |
David S. Miller | 59b9997 | 2012-05-10 23:03:34 -0400 | [diff] [blame] | 535 | skb->dev = vlan->lowerdev; |
Arnd Bergmann | 618e1b7 | 2009-11-26 06:07:10 +0000 | [diff] [blame] | 536 | return dev_queue_xmit(skb); |
| 537 | } |
| 538 | |
dingtianhong | 688cea8 | 2014-05-30 16:00:56 +0800 | [diff] [blame] | 539 | static inline netdev_tx_t macvlan_netpoll_send_skb(struct macvlan_dev *vlan, struct sk_buff *skb) |
| 540 | { |
| 541 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 542 | if (vlan->netpoll) |
| 543 | netpoll_send_skb(vlan->netpoll, skb); |
| 544 | #else |
| 545 | BUG(); |
| 546 | #endif |
| 547 | return NETDEV_TX_OK; |
| 548 | } |
| 549 | |
stephen hemminger | 0db901b | 2013-12-27 12:06:46 -0800 | [diff] [blame] | 550 | static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, |
| 551 | struct net_device *dev) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 552 | { |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 553 | unsigned int len = skb->len; |
| 554 | int ret; |
dingtianhong | 688cea8 | 2014-05-30 16:00:56 +0800 | [diff] [blame] | 555 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 556 | |
| 557 | if (unlikely(netpoll_tx_running(dev))) |
| 558 | return macvlan_netpoll_send_skb(vlan, skb); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 559 | |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 560 | if (vlan->fwd_priv) { |
| 561 | skb->dev = vlan->lowerdev; |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 562 | ret = dev_queue_xmit_accel(skb, vlan->fwd_priv); |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 563 | } else { |
| 564 | ret = macvlan_queue_xmit(skb, dev); |
| 565 | } |
| 566 | |
Eric Dumazet | 2d6c9ff | 2010-05-10 04:51:02 +0000 | [diff] [blame] | 567 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
Li RongQing | cdf3e27 | 2014-01-04 14:22:34 +0800 | [diff] [blame] | 568 | struct vlan_pcpu_stats *pcpu_stats; |
Eric Dumazet | 2c11455 | 2009-09-03 00:11:45 +0000 | [diff] [blame] | 569 | |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 570 | pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); |
| 571 | u64_stats_update_begin(&pcpu_stats->syncp); |
| 572 | pcpu_stats->tx_packets++; |
| 573 | pcpu_stats->tx_bytes += len; |
| 574 | u64_stats_update_end(&pcpu_stats->syncp); |
| 575 | } else { |
| 576 | this_cpu_inc(vlan->pcpu_stats->tx_dropped); |
| 577 | } |
Patrick McHardy | cbbef5e | 2009-11-10 06:14:24 +0000 | [diff] [blame] | 578 | return ret; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | static int macvlan_hard_header(struct sk_buff *skb, struct net_device *dev, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 582 | unsigned short type, const void *daddr, |
| 583 | const void *saddr, unsigned len) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 584 | { |
| 585 | const struct macvlan_dev *vlan = netdev_priv(dev); |
| 586 | struct net_device *lowerdev = vlan->lowerdev; |
| 587 | |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 588 | return dev_hard_header(skb, lowerdev, type, daddr, |
| 589 | saddr ? : dev->dev_addr, len); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 590 | } |
| 591 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 592 | static const struct header_ops macvlan_hard_header_ops = { |
| 593 | .create = macvlan_hard_header, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 594 | .parse = eth_header_parse, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 595 | .cache = eth_header_cache, |
| 596 | .cache_update = eth_header_cache_update, |
| 597 | }; |
| 598 | |
Jason Wang | b13ba1b | 2014-01-10 16:18:25 +0800 | [diff] [blame] | 599 | static struct rtnl_link_ops macvlan_link_ops; |
| 600 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 601 | static int macvlan_open(struct net_device *dev) |
| 602 | { |
| 603 | struct macvlan_dev *vlan = netdev_priv(dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 604 | struct net_device *lowerdev = vlan->lowerdev; |
| 605 | int err; |
| 606 | |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 607 | if (macvlan_passthru(vlan->port)) { |
Michael S. Tsirkin | 7873814 | 2013-08-01 13:50:10 +0300 | [diff] [blame] | 608 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) { |
| 609 | err = dev_set_promiscuity(lowerdev, 1); |
| 610 | if (err < 0) |
| 611 | goto out; |
| 612 | } |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 613 | goto hash_add; |
| 614 | } |
| 615 | |
Jason Wang | b13ba1b | 2014-01-10 16:18:25 +0800 | [diff] [blame] | 616 | if (lowerdev->features & NETIF_F_HW_L2FW_DOFFLOAD && |
| 617 | dev->rtnl_link_ops == &macvlan_link_ops) { |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 618 | vlan->fwd_priv = |
| 619 | lowerdev->netdev_ops->ndo_dfwd_add_station(lowerdev, dev); |
| 620 | |
| 621 | /* If we get a NULL pointer back, or if we get an error |
| 622 | * then we should just fall through to the non accelerated path |
| 623 | */ |
| 624 | if (IS_ERR_OR_NULL(vlan->fwd_priv)) { |
| 625 | vlan->fwd_priv = NULL; |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 626 | } else |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 627 | return 0; |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 628 | } |
| 629 | |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 630 | err = -EBUSY; |
| 631 | if (macvlan_addr_busy(vlan->port, dev->dev_addr)) |
| 632 | goto out; |
| 633 | |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 634 | err = dev_uc_add(lowerdev, dev->dev_addr); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 635 | if (err < 0) |
Wang Chen | b89fb7d | 2008-07-14 20:57:07 -0700 | [diff] [blame] | 636 | goto out; |
| 637 | if (dev->flags & IFF_ALLMULTI) { |
| 638 | err = dev_set_allmulti(lowerdev, 1); |
| 639 | if (err < 0) |
| 640 | goto del_unicast; |
| 641 | } |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 642 | |
Vlad Yasevich | efdbd2b | 2015-05-01 17:36:37 -0400 | [diff] [blame] | 643 | if (dev->flags & IFF_PROMISC) { |
| 644 | err = dev_set_promiscuity(lowerdev, 1); |
| 645 | if (err < 0) |
| 646 | goto clear_multi; |
| 647 | } |
| 648 | |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 649 | hash_add: |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 650 | macvlan_hash_add(vlan); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 651 | return 0; |
Wang Chen | b89fb7d | 2008-07-14 20:57:07 -0700 | [diff] [blame] | 652 | |
Vlad Yasevich | efdbd2b | 2015-05-01 17:36:37 -0400 | [diff] [blame] | 653 | clear_multi: |
Gao Feng | c3891fa | 2016-11-22 09:54:36 +0800 | [diff] [blame] | 654 | if (dev->flags & IFF_ALLMULTI) |
| 655 | dev_set_allmulti(lowerdev, -1); |
Wang Chen | b89fb7d | 2008-07-14 20:57:07 -0700 | [diff] [blame] | 656 | del_unicast: |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 657 | dev_uc_del(lowerdev, dev->dev_addr); |
Wang Chen | b89fb7d | 2008-07-14 20:57:07 -0700 | [diff] [blame] | 658 | out: |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 659 | if (vlan->fwd_priv) { |
| 660 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
| 661 | vlan->fwd_priv); |
| 662 | vlan->fwd_priv = NULL; |
| 663 | } |
Wang Chen | b89fb7d | 2008-07-14 20:57:07 -0700 | [diff] [blame] | 664 | return err; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 665 | } |
| 666 | |
| 667 | static int macvlan_stop(struct net_device *dev) |
| 668 | { |
| 669 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 670 | struct net_device *lowerdev = vlan->lowerdev; |
| 671 | |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 672 | if (vlan->fwd_priv) { |
| 673 | lowerdev->netdev_ops->ndo_dfwd_del_station(lowerdev, |
| 674 | vlan->fwd_priv); |
| 675 | vlan->fwd_priv = NULL; |
| 676 | return 0; |
| 677 | } |
| 678 | |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 679 | dev_uc_unsync(lowerdev, dev); |
| 680 | dev_mc_unsync(lowerdev, dev); |
| 681 | |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 682 | if (macvlan_passthru(vlan->port)) { |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 683 | if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC)) |
| 684 | dev_set_promiscuity(lowerdev, -1); |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 685 | goto hash_del; |
| 686 | } |
| 687 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 688 | if (dev->flags & IFF_ALLMULTI) |
| 689 | dev_set_allmulti(lowerdev, -1); |
| 690 | |
Vlad Yasevich | efdbd2b | 2015-05-01 17:36:37 -0400 | [diff] [blame] | 691 | if (dev->flags & IFF_PROMISC) |
| 692 | dev_set_promiscuity(lowerdev, -1); |
| 693 | |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 694 | dev_uc_del(lowerdev, dev->dev_addr); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 695 | |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 696 | hash_del: |
Eric Dumazet | 449f454 | 2011-05-19 12:24:16 +0000 | [diff] [blame] | 697 | macvlan_hash_del(vlan, !dev->dismantle); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 698 | return 0; |
| 699 | } |
| 700 | |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 701 | static int macvlan_sync_address(struct net_device *dev, unsigned char *addr) |
Patrick McHardy | ad5d20a | 2007-11-19 22:00:42 -0800 | [diff] [blame] | 702 | { |
| 703 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 704 | struct net_device *lowerdev = vlan->lowerdev; |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 705 | struct macvlan_port *port = vlan->port; |
Patrick McHardy | ad5d20a | 2007-11-19 22:00:42 -0800 | [diff] [blame] | 706 | int err; |
| 707 | |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 708 | if (!(dev->flags & IFF_UP)) { |
| 709 | /* Just copy in the new address */ |
| 710 | ether_addr_copy(dev->dev_addr, addr); |
| 711 | } else { |
| 712 | /* Rehash and update the device filters */ |
| 713 | if (macvlan_addr_busy(vlan->port, addr)) |
| 714 | return -EBUSY; |
| 715 | |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 716 | if (!macvlan_passthru(port)) { |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 717 | err = dev_uc_add(lowerdev, addr); |
| 718 | if (err) |
| 719 | return err; |
| 720 | |
| 721 | dev_uc_del(lowerdev, dev->dev_addr); |
| 722 | } |
| 723 | |
| 724 | macvlan_hash_change_addr(vlan, addr); |
| 725 | } |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 726 | if (macvlan_passthru(port) && !macvlan_addr_change(port)) { |
| 727 | /* Since addr_change isn't set, we are here due to lower |
| 728 | * device change. Save the lower-dev address so we can |
| 729 | * restore it later. |
| 730 | */ |
| 731 | ether_addr_copy(vlan->port->perm_addr, |
| 732 | lowerdev->dev_addr); |
| 733 | } |
| 734 | macvlan_clear_addr_change(port); |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 735 | return 0; |
| 736 | } |
| 737 | |
| 738 | static int macvlan_set_mac_address(struct net_device *dev, void *p) |
| 739 | { |
| 740 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 741 | struct sockaddr *addr = p; |
| 742 | |
Patrick McHardy | ad5d20a | 2007-11-19 22:00:42 -0800 | [diff] [blame] | 743 | if (!is_valid_ether_addr(addr->sa_data)) |
| 744 | return -EADDRNOTAVAIL; |
| 745 | |
Vlad Yasevich | e26f43f | 2017-06-21 07:59:16 -0400 | [diff] [blame] | 746 | /* If the addresses are the same, this is a no-op */ |
| 747 | if (ether_addr_equal(dev->dev_addr, addr->sa_data)) |
| 748 | return 0; |
| 749 | |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 750 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 751 | macvlan_set_addr_change(vlan->port); |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 752 | dev_set_mac_address(vlan->lowerdev, addr); |
| 753 | return 0; |
Eric Biederman | f9ac30f | 2009-03-13 13:16:13 -0700 | [diff] [blame] | 754 | } |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 755 | |
| 756 | return macvlan_sync_address(dev, addr->sa_data); |
Patrick McHardy | ad5d20a | 2007-11-19 22:00:42 -0800 | [diff] [blame] | 757 | } |
| 758 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 759 | static void macvlan_change_rx_flags(struct net_device *dev, int change) |
| 760 | { |
| 761 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 762 | struct net_device *lowerdev = vlan->lowerdev; |
| 763 | |
Peter Christensen | bbeb0ea | 2014-05-08 11:15:37 +0200 | [diff] [blame] | 764 | if (dev->flags & IFF_UP) { |
| 765 | if (change & IFF_ALLMULTI) |
| 766 | dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); |
Vlad Yasevich | efdbd2b | 2015-05-01 17:36:37 -0400 | [diff] [blame] | 767 | if (change & IFF_PROMISC) |
| 768 | dev_set_promiscuity(lowerdev, |
| 769 | dev->flags & IFF_PROMISC ? 1 : -1); |
| 770 | |
Peter Christensen | bbeb0ea | 2014-05-08 11:15:37 +0200 | [diff] [blame] | 771 | } |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 772 | } |
| 773 | |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 774 | static void macvlan_compute_filter(unsigned long *mc_filter, |
| 775 | struct net_device *dev, |
| 776 | struct macvlan_dev *vlan) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 777 | { |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 778 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 779 | bitmap_fill(mc_filter, MACVLAN_MC_FILTER_SZ); |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 780 | } else { |
| 781 | struct netdev_hw_addr *ha; |
| 782 | DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); |
| 783 | |
| 784 | bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); |
| 785 | netdev_for_each_mc_addr(ha, dev) { |
Eric Dumazet | 3807ff5 | 2013-02-07 16:41:02 +0000 | [diff] [blame] | 786 | __set_bit(mc_hash(vlan, ha->addr), filter); |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 787 | } |
Eric Dumazet | d527043 | 2013-02-07 16:02:57 +0000 | [diff] [blame] | 788 | |
Eric Dumazet | 3807ff5 | 2013-02-07 16:41:02 +0000 | [diff] [blame] | 789 | __set_bit(mc_hash(vlan, dev->broadcast), filter); |
Eric Dumazet | d527043 | 2013-02-07 16:02:57 +0000 | [diff] [blame] | 790 | |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 791 | bitmap_copy(mc_filter, filter, MACVLAN_MC_FILTER_SZ); |
Eric Dumazet | cd431e7 | 2013-02-05 20:22:50 +0000 | [diff] [blame] | 792 | } |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | static void macvlan_set_mac_lists(struct net_device *dev) |
| 796 | { |
| 797 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 798 | |
| 799 | macvlan_compute_filter(vlan->mc_filter, dev, vlan); |
| 800 | |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 801 | dev_uc_sync(vlan->lowerdev, dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 802 | dev_mc_sync(vlan->lowerdev, dev); |
Herbert Xu | 9c127a0 | 2016-06-01 11:45:44 +0800 | [diff] [blame] | 803 | |
| 804 | /* This is slightly inaccurate as we're including the subscription |
| 805 | * list of vlan->lowerdev too. |
| 806 | * |
| 807 | * Bug alert: This only works if everyone has the same broadcast |
| 808 | * address as lowerdev. As soon as someone changes theirs this |
| 809 | * will break. |
| 810 | * |
| 811 | * However, this is already broken as when you change your broadcast |
| 812 | * address we don't get called. |
| 813 | * |
| 814 | * The solution is to maintain a list of broadcast addresses like |
| 815 | * we do for uc/mc, if you care. |
| 816 | */ |
| 817 | macvlan_compute_filter(vlan->port->mc_filter, vlan->lowerdev, NULL); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 818 | } |
| 819 | |
| 820 | static int macvlan_change_mtu(struct net_device *dev, int new_mtu) |
| 821 | { |
| 822 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 823 | |
Jarod Wilson | 9157208 | 2016-10-20 13:55:20 -0400 | [diff] [blame] | 824 | if (vlan->lowerdev->mtu < new_mtu) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 825 | return -EINVAL; |
| 826 | dev->mtu = new_mtu; |
| 827 | return 0; |
| 828 | } |
| 829 | |
| 830 | /* |
| 831 | * macvlan network devices have devices nesting below it and are a special |
| 832 | * "super class" of normal network devices; split their locks off into a |
| 833 | * separate class since they always nest. |
| 834 | */ |
David S. Miller | cf508b1 | 2008-07-22 14:16:42 -0700 | [diff] [blame] | 835 | static struct lock_class_key macvlan_netdev_addr_lock_key; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 836 | |
Vlad Yasevich | 70957ea | 2017-05-11 11:09:52 -0400 | [diff] [blame] | 837 | #define ALWAYS_ON_OFFLOADS \ |
| 838 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_GSO_SOFTWARE | \ |
Jason Wang | a523a5e | 2014-11-26 17:21:14 +0800 | [diff] [blame] | 839 | NETIF_F_GSO_ROBUST) |
Vlad Yasevich | 8b4703e | 2014-03-03 15:33:53 -0500 | [diff] [blame] | 840 | |
Vlad Yasevich | 70957ea | 2017-05-11 11:09:52 -0400 | [diff] [blame] | 841 | #define ALWAYS_ON_FEATURES (ALWAYS_ON_OFFLOADS | NETIF_F_LLTX) |
| 842 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 843 | #define MACVLAN_FEATURES \ |
Tom Herbert | a188222 | 2015-12-14 11:19:43 -0800 | [diff] [blame] | 844 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ |
Michal Kubeček | 62dbe83 | 2014-12-05 17:05:49 +0100 | [diff] [blame] | 845 | NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_LRO | \ |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 846 | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ |
Patrick McHardy | 28d2b13 | 2013-04-19 02:04:32 +0000 | [diff] [blame] | 847 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 848 | |
| 849 | #define MACVLAN_STATE_MASK \ |
| 850 | ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) |
| 851 | |
Vlad Yasevich | c674ac3 | 2014-05-16 17:04:56 -0400 | [diff] [blame] | 852 | static int macvlan_get_nest_level(struct net_device *dev) |
| 853 | { |
| 854 | return ((struct macvlan_dev *)netdev_priv(dev))->nest_level; |
| 855 | } |
| 856 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 857 | static void macvlan_set_lockdep_class(struct net_device *dev) |
| 858 | { |
Eric Dumazet | 24ffd75 | 2016-06-09 07:45:14 -0700 | [diff] [blame] | 859 | netdev_lockdep_set_classes(dev); |
Vlad Yasevich | c674ac3 | 2014-05-16 17:04:56 -0400 | [diff] [blame] | 860 | lockdep_set_class_and_subclass(&dev->addr_list_lock, |
| 861 | &macvlan_netdev_addr_lock_key, |
| 862 | macvlan_get_nest_level(dev)); |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 863 | } |
| 864 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 865 | static int macvlan_init(struct net_device *dev) |
| 866 | { |
| 867 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 868 | const struct net_device *lowerdev = vlan->lowerdev; |
Francesco Ruggeri | 3083796 | 2016-04-23 15:03:32 -0700 | [diff] [blame] | 869 | struct macvlan_port *port = vlan->port; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 870 | |
| 871 | dev->state = (dev->state & ~MACVLAN_STATE_MASK) | |
| 872 | (lowerdev->state & MACVLAN_STATE_MASK); |
| 873 | dev->features = lowerdev->features & MACVLAN_FEATURES; |
Vlad Yasevich | 8b4703e | 2014-03-03 15:33:53 -0500 | [diff] [blame] | 874 | dev->features |= ALWAYS_ON_FEATURES; |
Michal Kubeček | 62dbe83 | 2014-12-05 17:05:49 +0100 | [diff] [blame] | 875 | dev->hw_features |= NETIF_F_LRO; |
Vlad Yasevich | 081e83a | 2014-07-31 10:30:25 -0400 | [diff] [blame] | 876 | dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES; |
Vlad Yasevich | 70957ea | 2017-05-11 11:09:52 -0400 | [diff] [blame] | 877 | dev->vlan_features |= ALWAYS_ON_OFFLOADS; |
Patrick McHardy | 8c2acc5 | 2009-11-23 14:18:53 -0800 | [diff] [blame] | 878 | dev->gso_max_size = lowerdev->gso_max_size; |
Eric Dumazet | f6773c5 | 2016-03-16 21:59:49 -0700 | [diff] [blame] | 879 | dev->gso_max_segs = lowerdev->gso_max_segs; |
sg.tweak@gmail.com | ef5c899 | 2009-06-10 09:55:02 +0000 | [diff] [blame] | 880 | dev->hard_header_len = lowerdev->hard_header_len; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 881 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 882 | macvlan_set_lockdep_class(dev); |
| 883 | |
WANG Cong | 1c213bd | 2014-02-13 11:46:28 -0800 | [diff] [blame] | 884 | vlan->pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats); |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 885 | if (!vlan->pcpu_stats) |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 886 | return -ENOMEM; |
| 887 | |
Francesco Ruggeri | 3083796 | 2016-04-23 15:03:32 -0700 | [diff] [blame] | 888 | port->count += 1; |
| 889 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 890 | return 0; |
| 891 | } |
| 892 | |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 893 | static void macvlan_uninit(struct net_device *dev) |
| 894 | { |
| 895 | struct macvlan_dev *vlan = netdev_priv(dev); |
Eric W. Biederman | d5cd9244 | 2011-03-21 18:22:22 -0700 | [diff] [blame] | 896 | struct macvlan_port *port = vlan->port; |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 897 | |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 898 | free_percpu(vlan->pcpu_stats); |
Eric W. Biederman | d5cd9244 | 2011-03-21 18:22:22 -0700 | [diff] [blame] | 899 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 900 | macvlan_flush_sources(port, vlan); |
David S. Miller | 5e3c516 | 2014-08-14 14:32:49 -0700 | [diff] [blame] | 901 | port->count -= 1; |
| 902 | if (!port->count) |
Eric W. Biederman | d5cd9244 | 2011-03-21 18:22:22 -0700 | [diff] [blame] | 903 | macvlan_port_destroy(port->dev); |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 904 | } |
| 905 | |
stephen hemminger | bc1f447 | 2017-01-06 19:12:52 -0800 | [diff] [blame] | 906 | static void macvlan_dev_get_stats64(struct net_device *dev, |
| 907 | struct rtnl_link_stats64 *stats) |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 908 | { |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 909 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 910 | |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 911 | if (vlan->pcpu_stats) { |
Li RongQing | cdf3e27 | 2014-01-04 14:22:34 +0800 | [diff] [blame] | 912 | struct vlan_pcpu_stats *p; |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 913 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; |
| 914 | u32 rx_errors = 0, tx_dropped = 0; |
Eric Dumazet | bc66154 | 2010-06-24 00:54:21 +0000 | [diff] [blame] | 915 | unsigned int start; |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 916 | int i; |
| 917 | |
| 918 | for_each_possible_cpu(i) { |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 919 | p = per_cpu_ptr(vlan->pcpu_stats, i); |
Eric Dumazet | bc66154 | 2010-06-24 00:54:21 +0000 | [diff] [blame] | 920 | do { |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 921 | start = u64_stats_fetch_begin_irq(&p->syncp); |
Eric Dumazet | bc66154 | 2010-06-24 00:54:21 +0000 | [diff] [blame] | 922 | rx_packets = p->rx_packets; |
| 923 | rx_bytes = p->rx_bytes; |
| 924 | rx_multicast = p->rx_multicast; |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 925 | tx_packets = p->tx_packets; |
| 926 | tx_bytes = p->tx_bytes; |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 927 | } while (u64_stats_fetch_retry_irq(&p->syncp, start)); |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 928 | |
| 929 | stats->rx_packets += rx_packets; |
| 930 | stats->rx_bytes += rx_bytes; |
| 931 | stats->multicast += rx_multicast; |
| 932 | stats->tx_packets += tx_packets; |
| 933 | stats->tx_bytes += tx_bytes; |
| 934 | /* rx_errors & tx_dropped are u32, updated |
| 935 | * without syncp protection. |
| 936 | */ |
| 937 | rx_errors += p->rx_errors; |
| 938 | tx_dropped += p->tx_dropped; |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 939 | } |
Eric Dumazet | 8ffab51 | 2010-11-10 21:14:04 +0000 | [diff] [blame] | 940 | stats->rx_errors = rx_errors; |
| 941 | stats->rx_dropped = rx_errors; |
| 942 | stats->tx_dropped = tx_dropped; |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 943 | } |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 944 | } |
| 945 | |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 946 | static int macvlan_vlan_rx_add_vid(struct net_device *dev, |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 947 | __be16 proto, u16 vid) |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 948 | { |
| 949 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 950 | struct net_device *lowerdev = vlan->lowerdev; |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 951 | |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 952 | return vlan_vid_add(lowerdev, proto, vid); |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 953 | } |
| 954 | |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 955 | static int macvlan_vlan_rx_kill_vid(struct net_device *dev, |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 956 | __be16 proto, u16 vid) |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 957 | { |
| 958 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 959 | struct net_device *lowerdev = vlan->lowerdev; |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 960 | |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 961 | vlan_vid_del(lowerdev, proto, vid); |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 962 | return 0; |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 963 | } |
| 964 | |
stephen hemminger | edc7d57 | 2012-10-01 12:32:33 +0000 | [diff] [blame] | 965 | static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 966 | struct net_device *dev, |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 967 | const unsigned char *addr, u16 vid, |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 968 | u16 flags) |
| 969 | { |
| 970 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 971 | int err = -EINVAL; |
| 972 | |
Vlad Yasevich | 8a50f11 | 2014-08-15 13:04:59 -0400 | [diff] [blame] | 973 | /* Support unicast filter only on passthru devices. |
| 974 | * Multicast filter should be allowed on all devices. |
| 975 | */ |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 976 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 977 | return -EOPNOTSUPP; |
| 978 | |
Thomas Richter | ab2cfbb | 2013-07-19 17:20:08 +0200 | [diff] [blame] | 979 | if (flags & NLM_F_REPLACE) |
| 980 | return -EOPNOTSUPP; |
| 981 | |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 982 | if (is_unicast_ether_addr(addr)) |
| 983 | err = dev_uc_add_excl(dev, addr); |
| 984 | else if (is_multicast_ether_addr(addr)) |
| 985 | err = dev_mc_add_excl(dev, addr); |
| 986 | |
| 987 | return err; |
| 988 | } |
| 989 | |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 990 | static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 991 | struct net_device *dev, |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 992 | const unsigned char *addr, u16 vid) |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 993 | { |
| 994 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 995 | int err = -EINVAL; |
| 996 | |
Vlad Yasevich | 8a50f11 | 2014-08-15 13:04:59 -0400 | [diff] [blame] | 997 | /* Support unicast filter only on passthru devices. |
| 998 | * Multicast filter should be allowed on all devices. |
| 999 | */ |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 1000 | if (!macvlan_passthru(vlan->port) && is_unicast_ether_addr(addr)) |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1001 | return -EOPNOTSUPP; |
| 1002 | |
| 1003 | if (is_unicast_ether_addr(addr)) |
| 1004 | err = dev_uc_del(dev, addr); |
| 1005 | else if (is_multicast_ether_addr(addr)) |
| 1006 | err = dev_mc_del(dev, addr); |
| 1007 | |
| 1008 | return err; |
| 1009 | } |
| 1010 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1011 | static void macvlan_ethtool_get_drvinfo(struct net_device *dev, |
| 1012 | struct ethtool_drvinfo *drvinfo) |
| 1013 | { |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 1014 | strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); |
| 1015 | strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1016 | } |
| 1017 | |
David Decotigny | 85f9581 | 2016-02-24 10:58:04 -0800 | [diff] [blame] | 1018 | static int macvlan_ethtool_get_link_ksettings(struct net_device *dev, |
| 1019 | struct ethtool_link_ksettings *cmd) |
Stephen Hemminger | 9edb8bb | 2008-10-29 15:31:53 -0700 | [diff] [blame] | 1020 | { |
| 1021 | const struct macvlan_dev *vlan = netdev_priv(dev); |
Jiri Pirko | 4bc71cb | 2011-09-03 03:34:30 +0000 | [diff] [blame] | 1022 | |
David Decotigny | 85f9581 | 2016-02-24 10:58:04 -0800 | [diff] [blame] | 1023 | return __ethtool_get_link_ksettings(vlan->lowerdev, cmd); |
Stephen Hemminger | 9edb8bb | 2008-10-29 15:31:53 -0700 | [diff] [blame] | 1024 | } |
| 1025 | |
Vlad Yasevich | 2be5c76 | 2013-06-25 16:04:21 -0400 | [diff] [blame] | 1026 | static netdev_features_t macvlan_fix_features(struct net_device *dev, |
| 1027 | netdev_features_t features) |
| 1028 | { |
| 1029 | struct macvlan_dev *vlan = netdev_priv(dev); |
Michal Kubeček | 62dbe83 | 2014-12-05 17:05:49 +0100 | [diff] [blame] | 1030 | netdev_features_t lowerdev_features = vlan->lowerdev->features; |
Florian Westphal | 797f87f | 2013-12-26 12:17:00 +0100 | [diff] [blame] | 1031 | netdev_features_t mask; |
Vlad Yasevich | 2be5c76 | 2013-06-25 16:04:21 -0400 | [diff] [blame] | 1032 | |
Florian Westphal | 797f87f | 2013-12-26 12:17:00 +0100 | [diff] [blame] | 1033 | features |= NETIF_F_ALL_FOR_ALL; |
| 1034 | features &= (vlan->set_features | ~MACVLAN_FEATURES); |
| 1035 | mask = features; |
| 1036 | |
Michal Kubeček | 62dbe83 | 2014-12-05 17:05:49 +0100 | [diff] [blame] | 1037 | lowerdev_features &= (features | ~NETIF_F_LRO); |
| 1038 | features = netdev_increment_features(lowerdev_features, features, mask); |
Vlad Yasevich | 8b4703e | 2014-03-03 15:33:53 -0500 | [diff] [blame] | 1039 | features |= ALWAYS_ON_FEATURES; |
Francesco Ruggeri | 0d0162e | 2014-09-17 10:40:44 -0700 | [diff] [blame] | 1040 | features &= ~NETIF_F_NETNS_LOCAL; |
Florian Westphal | 797f87f | 2013-12-26 12:17:00 +0100 | [diff] [blame] | 1041 | |
| 1042 | return features; |
Vlad Yasevich | 2be5c76 | 2013-06-25 16:04:21 -0400 | [diff] [blame] | 1043 | } |
| 1044 | |
dingtianhong | 688cea8 | 2014-05-30 16:00:56 +0800 | [diff] [blame] | 1045 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1046 | static void macvlan_dev_poll_controller(struct net_device *dev) |
| 1047 | { |
| 1048 | return; |
| 1049 | } |
| 1050 | |
| 1051 | static int macvlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) |
| 1052 | { |
| 1053 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 1054 | struct net_device *real_dev = vlan->lowerdev; |
| 1055 | struct netpoll *netpoll; |
| 1056 | int err = 0; |
| 1057 | |
| 1058 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); |
| 1059 | err = -ENOMEM; |
| 1060 | if (!netpoll) |
| 1061 | goto out; |
| 1062 | |
| 1063 | err = __netpoll_setup(netpoll, real_dev); |
| 1064 | if (err) { |
| 1065 | kfree(netpoll); |
| 1066 | goto out; |
| 1067 | } |
| 1068 | |
| 1069 | vlan->netpoll = netpoll; |
| 1070 | |
| 1071 | out: |
| 1072 | return err; |
| 1073 | } |
| 1074 | |
| 1075 | static void macvlan_dev_netpoll_cleanup(struct net_device *dev) |
| 1076 | { |
| 1077 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 1078 | struct netpoll *netpoll = vlan->netpoll; |
| 1079 | |
| 1080 | if (!netpoll) |
| 1081 | return; |
| 1082 | |
| 1083 | vlan->netpoll = NULL; |
| 1084 | |
| 1085 | __netpoll_free_async(netpoll); |
| 1086 | } |
| 1087 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
| 1088 | |
Nicolas Dichtel | ef5fa6b | 2015-04-02 17:07:05 +0200 | [diff] [blame] | 1089 | static int macvlan_dev_get_iflink(const struct net_device *dev) |
| 1090 | { |
| 1091 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 1092 | |
| 1093 | return vlan->lowerdev->ifindex; |
| 1094 | } |
| 1095 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1096 | static const struct ethtool_ops macvlan_ethtool_ops = { |
| 1097 | .get_link = ethtool_op_get_link, |
David Decotigny | 85f9581 | 2016-02-24 10:58:04 -0800 | [diff] [blame] | 1098 | .get_link_ksettings = macvlan_ethtool_get_link_ksettings, |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1099 | .get_drvinfo = macvlan_ethtool_get_drvinfo, |
| 1100 | }; |
| 1101 | |
Stephen Hemminger | 54a30c9 | 2008-11-19 21:51:06 -0800 | [diff] [blame] | 1102 | static const struct net_device_ops macvlan_netdev_ops = { |
| 1103 | .ndo_init = macvlan_init, |
Eric Dumazet | fccaf71 | 2009-11-17 08:53:49 +0000 | [diff] [blame] | 1104 | .ndo_uninit = macvlan_uninit, |
Stephen Hemminger | 54a30c9 | 2008-11-19 21:51:06 -0800 | [diff] [blame] | 1105 | .ndo_open = macvlan_open, |
| 1106 | .ndo_stop = macvlan_stop, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1107 | .ndo_start_xmit = macvlan_start_xmit, |
Stephen Hemminger | 54a30c9 | 2008-11-19 21:51:06 -0800 | [diff] [blame] | 1108 | .ndo_change_mtu = macvlan_change_mtu, |
Vlad Yasevich | 2be5c76 | 2013-06-25 16:04:21 -0400 | [diff] [blame] | 1109 | .ndo_fix_features = macvlan_fix_features, |
Stephen Hemminger | 54a30c9 | 2008-11-19 21:51:06 -0800 | [diff] [blame] | 1110 | .ndo_change_rx_flags = macvlan_change_rx_flags, |
| 1111 | .ndo_set_mac_address = macvlan_set_mac_address, |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1112 | .ndo_set_rx_mode = macvlan_set_mac_lists, |
Eric Dumazet | bc66154 | 2010-06-24 00:54:21 +0000 | [diff] [blame] | 1113 | .ndo_get_stats64 = macvlan_dev_get_stats64, |
Stephen Hemminger | 54a30c9 | 2008-11-19 21:51:06 -0800 | [diff] [blame] | 1114 | .ndo_validate_addr = eth_validate_addr, |
John Fastabend | 8d13e67 | 2011-06-06 04:27:16 +0000 | [diff] [blame] | 1115 | .ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid, |
| 1116 | .ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid, |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1117 | .ndo_fdb_add = macvlan_fdb_add, |
| 1118 | .ndo_fdb_del = macvlan_fdb_del, |
| 1119 | .ndo_fdb_dump = ndo_dflt_fdb_dump, |
Vlad Yasevich | c674ac3 | 2014-05-16 17:04:56 -0400 | [diff] [blame] | 1120 | .ndo_get_lock_subclass = macvlan_get_nest_level, |
dingtianhong | 688cea8 | 2014-05-30 16:00:56 +0800 | [diff] [blame] | 1121 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1122 | .ndo_poll_controller = macvlan_dev_poll_controller, |
| 1123 | .ndo_netpoll_setup = macvlan_dev_netpoll_setup, |
| 1124 | .ndo_netpoll_cleanup = macvlan_dev_netpoll_cleanup, |
| 1125 | #endif |
Nicolas Dichtel | ef5fa6b | 2015-04-02 17:07:05 +0200 | [diff] [blame] | 1126 | .ndo_get_iflink = macvlan_dev_get_iflink, |
Toshiaki Makita | f56e67b | 2015-07-31 15:03:24 +0900 | [diff] [blame] | 1127 | .ndo_features_check = passthru_features_check, |
Stephen Hemminger | 54a30c9 | 2008-11-19 21:51:06 -0800 | [diff] [blame] | 1128 | }; |
| 1129 | |
Herbert Xu | 8a35747 | 2010-07-21 21:44:31 +0000 | [diff] [blame] | 1130 | void macvlan_common_setup(struct net_device *dev) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1131 | { |
| 1132 | ether_setup(dev); |
| 1133 | |
Jarod Wilson | 9157208 | 2016-10-20 13:55:20 -0400 | [diff] [blame] | 1134 | dev->min_mtu = 0; |
| 1135 | dev->max_mtu = ETH_MAX_MTU; |
Eric Dumazet | 0287587 | 2014-10-05 18:38:35 -0700 | [diff] [blame] | 1136 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
| 1137 | netif_keep_dst(dev); |
Vlad Yasevich | 87ab7f6 | 2013-03-07 10:21:48 +0000 | [diff] [blame] | 1138 | dev->priv_flags |= IFF_UNICAST_FLT; |
Stephen Hemminger | 54a30c9 | 2008-11-19 21:51:06 -0800 | [diff] [blame] | 1139 | dev->netdev_ops = &macvlan_netdev_ops; |
David S. Miller | cf124db | 2017-05-08 12:52:56 -0400 | [diff] [blame] | 1140 | dev->needs_free_netdev = true; |
Lutz Jaenicke | 7174012 | 2013-08-28 13:34:31 +0200 | [diff] [blame] | 1141 | dev->header_ops = &macvlan_hard_header_ops; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1142 | dev->ethtool_ops = &macvlan_ethtool_ops; |
Herbert Xu | 8a35747 | 2010-07-21 21:44:31 +0000 | [diff] [blame] | 1143 | } |
| 1144 | EXPORT_SYMBOL_GPL(macvlan_common_setup); |
| 1145 | |
| 1146 | static void macvlan_setup(struct net_device *dev) |
| 1147 | { |
| 1148 | macvlan_common_setup(dev); |
Zhang Shengju | 7009212 | 2016-02-14 14:10:39 +0000 | [diff] [blame] | 1149 | dev->priv_flags |= IFF_NO_QUEUE; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1150 | } |
| 1151 | |
| 1152 | static int macvlan_port_create(struct net_device *dev) |
| 1153 | { |
| 1154 | struct macvlan_port *port; |
| 1155 | unsigned int i; |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 1156 | int err; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1157 | |
| 1158 | if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) |
| 1159 | return -EINVAL; |
| 1160 | |
Mahesh Bandewar | 322dc6e | 2017-01-18 15:02:55 -0800 | [diff] [blame] | 1161 | if (netdev_is_rx_handler_busy(dev)) |
Mahesh Bandewar | d6b00fe | 2014-12-06 15:53:46 -0800 | [diff] [blame] | 1162 | return -EBUSY; |
| 1163 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1164 | port = kzalloc(sizeof(*port), GFP_KERNEL); |
| 1165 | if (port == NULL) |
| 1166 | return -ENOMEM; |
| 1167 | |
| 1168 | port->dev = dev; |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 1169 | ether_addr_copy(port->perm_addr, dev->dev_addr); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1170 | INIT_LIST_HEAD(&port->vlans); |
| 1171 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) |
| 1172 | INIT_HLIST_HEAD(&port->vlan_hash[i]); |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1173 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) |
| 1174 | INIT_HLIST_HEAD(&port->vlan_source_hash[i]); |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 1175 | |
Herbert Xu | 412ca15 | 2014-04-17 13:45:59 +0800 | [diff] [blame] | 1176 | skb_queue_head_init(&port->bc_queue); |
| 1177 | INIT_WORK(&port->bc_work, macvlan_process_broadcast); |
| 1178 | |
Jiri Pirko | a35e2c1 | 2010-06-15 03:27:57 +0000 | [diff] [blame] | 1179 | err = netdev_rx_handler_register(dev, macvlan_handle_frame, port); |
| 1180 | if (err) |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 1181 | kfree(port); |
Eric Dumazet | d935156 | 2011-05-20 14:59:23 -0400 | [diff] [blame] | 1182 | else |
| 1183 | dev->priv_flags |= IFF_MACVLAN_PORT; |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 1184 | return err; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1185 | } |
| 1186 | |
| 1187 | static void macvlan_port_destroy(struct net_device *dev) |
| 1188 | { |
Eric Dumazet | e052f7e | 2013-03-30 10:08:44 +0000 | [diff] [blame] | 1189 | struct macvlan_port *port = macvlan_port_get_rtnl(dev); |
Herbert Xu | f647821 | 2017-04-20 20:55:12 +0800 | [diff] [blame] | 1190 | struct sk_buff *skb; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1191 | |
Jiri Pirko | a35e2c1 | 2010-06-15 03:27:57 +0000 | [diff] [blame] | 1192 | dev->priv_flags &= ~IFF_MACVLAN_PORT; |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 1193 | netdev_rx_handler_unregister(dev); |
Eric Dumazet | fe0ca73 | 2014-10-22 19:43:46 -0700 | [diff] [blame] | 1194 | |
| 1195 | /* After this point, no packet can schedule bc_work anymore, |
| 1196 | * but we need to cancel it and purge left skbs if any. |
| 1197 | */ |
| 1198 | cancel_work_sync(&port->bc_work); |
Herbert Xu | f647821 | 2017-04-20 20:55:12 +0800 | [diff] [blame] | 1199 | |
| 1200 | while ((skb = __skb_dequeue(&port->bc_queue))) { |
| 1201 | const struct macvlan_dev *src = MACVLAN_SKB_CB(skb)->src; |
| 1202 | |
| 1203 | if (src) |
| 1204 | dev_put(src->dev); |
| 1205 | |
| 1206 | kfree_skb(skb); |
| 1207 | } |
Eric Dumazet | fe0ca73 | 2014-10-22 19:43:46 -0700 | [diff] [blame] | 1208 | |
Vlad Yasevich | 18c8c54 | 2017-06-21 07:59:19 -0400 | [diff] [blame] | 1209 | /* If the lower device address has been changed by passthru |
| 1210 | * macvlan, put it back. |
| 1211 | */ |
| 1212 | if (macvlan_passthru(port) && |
| 1213 | !ether_addr_equal(port->dev->dev_addr, port->perm_addr)) { |
| 1214 | struct sockaddr sa; |
| 1215 | |
| 1216 | sa.sa_family = port->dev->type; |
| 1217 | memcpy(&sa.sa_data, port->perm_addr, port->dev->addr_len); |
| 1218 | dev_set_mac_address(port->dev, &sa); |
| 1219 | } |
| 1220 | |
Gao Feng | a1f5315 | 2016-12-07 12:23:18 +0800 | [diff] [blame] | 1221 | kfree(port); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1222 | } |
| 1223 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1224 | static int macvlan_validate(struct nlattr *tb[], struct nlattr *data[]) |
| 1225 | { |
| 1226 | if (tb[IFLA_ADDRESS]) { |
| 1227 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) |
| 1228 | return -EINVAL; |
| 1229 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) |
| 1230 | return -EADDRNOTAVAIL; |
| 1231 | } |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1232 | |
Michael S. Tsirkin | 1512747 | 2013-08-05 18:25:54 +0300 | [diff] [blame] | 1233 | if (data && data[IFLA_MACVLAN_FLAGS] && |
| 1234 | nla_get_u16(data[IFLA_MACVLAN_FLAGS]) & ~MACVLAN_FLAG_NOPROMISC) |
| 1235 | return -EINVAL; |
| 1236 | |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1237 | if (data && data[IFLA_MACVLAN_MODE]) { |
| 1238 | switch (nla_get_u32(data[IFLA_MACVLAN_MODE])) { |
| 1239 | case MACVLAN_MODE_PRIVATE: |
| 1240 | case MACVLAN_MODE_VEPA: |
| 1241 | case MACVLAN_MODE_BRIDGE: |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 1242 | case MACVLAN_MODE_PASSTHRU: |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1243 | case MACVLAN_MODE_SOURCE: |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1244 | break; |
| 1245 | default: |
| 1246 | return -EINVAL; |
| 1247 | } |
| 1248 | } |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1249 | |
| 1250 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
| 1251 | switch (nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE])) { |
| 1252 | case MACVLAN_MACADDR_ADD: |
| 1253 | case MACVLAN_MACADDR_DEL: |
| 1254 | case MACVLAN_MACADDR_FLUSH: |
| 1255 | case MACVLAN_MACADDR_SET: |
| 1256 | break; |
| 1257 | default: |
| 1258 | return -EINVAL; |
| 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | if (data && data[IFLA_MACVLAN_MACADDR]) { |
| 1263 | if (nla_len(data[IFLA_MACVLAN_MACADDR]) != ETH_ALEN) |
| 1264 | return -EINVAL; |
| 1265 | |
| 1266 | if (!is_valid_ether_addr(nla_data(data[IFLA_MACVLAN_MACADDR]))) |
| 1267 | return -EADDRNOTAVAIL; |
| 1268 | } |
| 1269 | |
| 1270 | if (data && data[IFLA_MACVLAN_MACADDR_COUNT]) |
| 1271 | return -EINVAL; |
| 1272 | |
| 1273 | return 0; |
| 1274 | } |
| 1275 | |
| 1276 | /** |
| 1277 | * reconfigure list of remote source mac address |
| 1278 | * (only for macvlan devices in source mode) |
| 1279 | * Note regarding alignment: all netlink data is aligned to 4 Byte, which |
| 1280 | * suffices for both ether_addr_copy and ether_addr_equal_64bits usage. |
| 1281 | */ |
| 1282 | static int macvlan_changelink_sources(struct macvlan_dev *vlan, u32 mode, |
| 1283 | struct nlattr *data[]) |
| 1284 | { |
| 1285 | char *addr = NULL; |
| 1286 | int ret, rem, len; |
| 1287 | struct nlattr *nla, *head; |
| 1288 | struct macvlan_source_entry *entry; |
| 1289 | |
| 1290 | if (data[IFLA_MACVLAN_MACADDR]) |
| 1291 | addr = nla_data(data[IFLA_MACVLAN_MACADDR]); |
| 1292 | |
| 1293 | if (mode == MACVLAN_MACADDR_ADD) { |
| 1294 | if (!addr) |
| 1295 | return -EINVAL; |
| 1296 | |
| 1297 | return macvlan_hash_add_source(vlan, addr); |
| 1298 | |
| 1299 | } else if (mode == MACVLAN_MACADDR_DEL) { |
| 1300 | if (!addr) |
| 1301 | return -EINVAL; |
| 1302 | |
| 1303 | entry = macvlan_hash_lookup_source(vlan, addr); |
| 1304 | if (entry) { |
| 1305 | macvlan_hash_del_source(entry); |
| 1306 | vlan->macaddr_count--; |
| 1307 | } |
| 1308 | } else if (mode == MACVLAN_MACADDR_FLUSH) { |
| 1309 | macvlan_flush_sources(vlan->port, vlan); |
| 1310 | } else if (mode == MACVLAN_MACADDR_SET) { |
| 1311 | macvlan_flush_sources(vlan->port, vlan); |
| 1312 | |
| 1313 | if (addr) { |
| 1314 | ret = macvlan_hash_add_source(vlan, addr); |
| 1315 | if (ret) |
| 1316 | return ret; |
| 1317 | } |
| 1318 | |
| 1319 | if (!data || !data[IFLA_MACVLAN_MACADDR_DATA]) |
| 1320 | return 0; |
| 1321 | |
| 1322 | head = nla_data(data[IFLA_MACVLAN_MACADDR_DATA]); |
| 1323 | len = nla_len(data[IFLA_MACVLAN_MACADDR_DATA]); |
| 1324 | |
| 1325 | nla_for_each_attr(nla, head, len, rem) { |
| 1326 | if (nla_type(nla) != IFLA_MACVLAN_MACADDR || |
| 1327 | nla_len(nla) != ETH_ALEN) |
| 1328 | continue; |
| 1329 | |
| 1330 | addr = nla_data(nla); |
| 1331 | ret = macvlan_hash_add_source(vlan, addr); |
| 1332 | if (ret) |
| 1333 | return ret; |
| 1334 | } |
| 1335 | } else { |
| 1336 | return -EINVAL; |
| 1337 | } |
| 1338 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1339 | return 0; |
| 1340 | } |
| 1341 | |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1342 | int macvlan_common_newlink(struct net *src_net, struct net_device *dev, |
Vlad Yasevich | 2f6a1b6 | 2013-12-11 13:27:11 -0500 | [diff] [blame] | 1343 | struct nlattr *tb[], struct nlattr *data[]) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1344 | { |
| 1345 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 1346 | struct macvlan_port *port; |
| 1347 | struct net_device *lowerdev; |
| 1348 | int err; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1349 | int macmode; |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1350 | bool create = false; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1351 | |
| 1352 | if (!tb[IFLA_LINK]) |
| 1353 | return -EINVAL; |
| 1354 | |
Eric W. Biederman | 81adee4 | 2009-11-08 00:53:51 -0800 | [diff] [blame] | 1355 | lowerdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1356 | if (lowerdev == NULL) |
| 1357 | return -ENODEV; |
| 1358 | |
Kevin Wallace | d70f2cf | 2013-12-03 02:55:22 -0800 | [diff] [blame] | 1359 | /* When creating macvlans or macvtaps on top of other macvlans - use |
Eric Biederman | b0832a2 | 2009-03-13 13:15:37 -0700 | [diff] [blame] | 1360 | * the real device as the lowerdev. |
Patrick McHardy | a6ca5f1 | 2008-01-10 22:39:28 -0800 | [diff] [blame] | 1361 | */ |
Kevin Wallace | d70f2cf | 2013-12-03 02:55:22 -0800 | [diff] [blame] | 1362 | if (netif_is_macvlan(lowerdev)) |
| 1363 | lowerdev = macvlan_dev_real_dev(lowerdev); |
Patrick McHardy | a6ca5f1 | 2008-01-10 22:39:28 -0800 | [diff] [blame] | 1364 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1365 | if (!tb[IFLA_MTU]) |
| 1366 | dev->mtu = lowerdev->mtu; |
| 1367 | else if (dev->mtu > lowerdev->mtu) |
| 1368 | return -EINVAL; |
| 1369 | |
Jarod Wilson | 9157208 | 2016-10-20 13:55:20 -0400 | [diff] [blame] | 1370 | /* MTU range: 68 - lowerdev->max_mtu */ |
| 1371 | dev->min_mtu = ETH_MIN_MTU; |
| 1372 | dev->max_mtu = lowerdev->max_mtu; |
| 1373 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1374 | if (!tb[IFLA_ADDRESS]) |
Danny Kukawka | 7ce5d22 | 2012-02-15 06:45:40 +0000 | [diff] [blame] | 1375 | eth_hw_addr_random(dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1376 | |
Jiri Pirko | a35e2c1 | 2010-06-15 03:27:57 +0000 | [diff] [blame] | 1377 | if (!macvlan_port_exists(lowerdev)) { |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1378 | err = macvlan_port_create(lowerdev); |
| 1379 | if (err < 0) |
| 1380 | return err; |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1381 | create = true; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1382 | } |
Eric Dumazet | e052f7e | 2013-03-30 10:08:44 +0000 | [diff] [blame] | 1383 | port = macvlan_port_get_rtnl(lowerdev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1384 | |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 1385 | /* Only 1 macvlan device can be created in passthru mode */ |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 1386 | if (macvlan_passthru(port)) { |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1387 | /* The macvlan port must be not created this time, |
| 1388 | * still goto destroy_macvlan_port for readability. |
| 1389 | */ |
| 1390 | err = -EINVAL; |
| 1391 | goto destroy_macvlan_port; |
| 1392 | } |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 1393 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1394 | vlan->lowerdev = lowerdev; |
| 1395 | vlan->dev = dev; |
| 1396 | vlan->port = port; |
Vlad Yasevich | 2be5c76 | 2013-06-25 16:04:21 -0400 | [diff] [blame] | 1397 | vlan->set_features = MACVLAN_FEATURES; |
Sabrina Dubroca | 952fcfd | 2016-08-12 16:10:33 +0200 | [diff] [blame] | 1398 | vlan->nest_level = dev_get_nest_level(lowerdev) + 1; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1399 | |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1400 | vlan->mode = MACVLAN_MODE_VEPA; |
| 1401 | if (data && data[IFLA_MACVLAN_MODE]) |
| 1402 | vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); |
| 1403 | |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1404 | if (data && data[IFLA_MACVLAN_FLAGS]) |
| 1405 | vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); |
| 1406 | |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 1407 | if (vlan->mode == MACVLAN_MODE_PASSTHRU) { |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1408 | if (port->count) { |
| 1409 | err = -EINVAL; |
| 1410 | goto destroy_macvlan_port; |
| 1411 | } |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 1412 | macvlan_set_passthru(port); |
Bjørn Mork | 8b98604 | 2013-08-30 18:08:47 +0200 | [diff] [blame] | 1413 | eth_hw_addr_inherit(dev, lowerdev); |
Sridhar Samudrala | eb06acd | 2010-10-28 13:10:50 +0000 | [diff] [blame] | 1414 | } |
| 1415 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1416 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1417 | if (vlan->mode != MACVLAN_MODE_SOURCE) { |
| 1418 | err = -EINVAL; |
| 1419 | goto destroy_macvlan_port; |
| 1420 | } |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1421 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); |
| 1422 | err = macvlan_changelink_sources(vlan, macmode, data); |
| 1423 | if (err) |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1424 | goto destroy_macvlan_port; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1425 | } |
| 1426 | |
John Fastabend | 47d4ab9 | 2013-10-21 14:28:02 -0700 | [diff] [blame] | 1427 | err = register_netdevice(dev); |
| 1428 | if (err < 0) |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1429 | goto destroy_macvlan_port; |
John Fastabend | 47d4ab9 | 2013-10-21 14:28:02 -0700 | [diff] [blame] | 1430 | |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 1431 | dev->priv_flags |= IFF_MACVLAN; |
Jiri Pirko | 7cd43db | 2013-01-03 22:48:50 +0000 | [diff] [blame] | 1432 | err = netdev_upper_dev_link(lowerdev, dev); |
| 1433 | if (err) |
Cong Wang | da37705 | 2014-02-11 15:51:29 -0800 | [diff] [blame] | 1434 | goto unregister_netdev; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1435 | |
Jiri Pirko | 233c7df | 2013-05-09 04:23:40 +0000 | [diff] [blame] | 1436 | list_add_tail_rcu(&vlan->list, &port->vlans); |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 1437 | netif_stacked_transfer_operstate(lowerdev, dev); |
Nikolay Aleksandrov | de7d244 | 2016-01-27 17:50:43 +0100 | [diff] [blame] | 1438 | linkwatch_fire_event(dev); |
Jiri Pirko | f16d3d5 | 2010-05-24 07:02:25 +0000 | [diff] [blame] | 1439 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1440 | return 0; |
Jiri Pirko | f16d3d5 | 2010-05-24 07:02:25 +0000 | [diff] [blame] | 1441 | |
Cong Wang | da37705 | 2014-02-11 15:51:29 -0800 | [diff] [blame] | 1442 | unregister_netdev: |
| 1443 | unregister_netdevice(dev); |
Gao Feng | aa5fd0f | 2016-11-04 10:28:49 +0800 | [diff] [blame] | 1444 | destroy_macvlan_port: |
| 1445 | if (create) |
| 1446 | macvlan_port_destroy(port->dev); |
Jiri Pirko | f16d3d5 | 2010-05-24 07:02:25 +0000 | [diff] [blame] | 1447 | return err; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1448 | } |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1449 | EXPORT_SYMBOL_GPL(macvlan_common_newlink); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1450 | |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1451 | static int macvlan_newlink(struct net *src_net, struct net_device *dev, |
| 1452 | struct nlattr *tb[], struct nlattr *data[]) |
| 1453 | { |
Vlad Yasevich | 2f6a1b6 | 2013-12-11 13:27:11 -0500 | [diff] [blame] | 1454 | return macvlan_common_newlink(src_net, dev, tb, data); |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1455 | } |
| 1456 | |
| 1457 | void macvlan_dellink(struct net_device *dev, struct list_head *head) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1458 | { |
| 1459 | struct macvlan_dev *vlan = netdev_priv(dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1460 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1461 | if (vlan->mode == MACVLAN_MODE_SOURCE) |
| 1462 | macvlan_flush_sources(vlan->port, vlan); |
Jiri Pirko | 233c7df | 2013-05-09 04:23:40 +0000 | [diff] [blame] | 1463 | list_del_rcu(&vlan->list); |
Eric Dumazet | 23289a3 | 2009-10-27 07:06:36 +0000 | [diff] [blame] | 1464 | unregister_netdevice_queue(dev, head); |
Jiri Pirko | 7cd43db | 2013-01-03 22:48:50 +0000 | [diff] [blame] | 1465 | netdev_upper_dev_unlink(vlan->lowerdev, dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1466 | } |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1467 | EXPORT_SYMBOL_GPL(macvlan_dellink); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1468 | |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1469 | static int macvlan_changelink(struct net_device *dev, |
| 1470 | struct nlattr *tb[], struct nlattr *data[]) |
| 1471 | { |
| 1472 | struct macvlan_dev *vlan = netdev_priv(dev); |
Michael S. Tsirkin | 266e834 | 2013-08-01 13:43:19 +0300 | [diff] [blame] | 1473 | enum macvlan_mode mode; |
| 1474 | bool set_mode = false; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1475 | enum macvlan_macaddr_mode macmode; |
| 1476 | int ret; |
Michael S. Tsirkin | 266e834 | 2013-08-01 13:43:19 +0300 | [diff] [blame] | 1477 | |
| 1478 | /* Validate mode, but don't set yet: setting flags may fail. */ |
| 1479 | if (data && data[IFLA_MACVLAN_MODE]) { |
| 1480 | set_mode = true; |
| 1481 | mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); |
| 1482 | /* Passthrough mode can't be set or cleared dynamically */ |
| 1483 | if ((mode == MACVLAN_MODE_PASSTHRU) != |
| 1484 | (vlan->mode == MACVLAN_MODE_PASSTHRU)) |
| 1485 | return -EINVAL; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1486 | if (vlan->mode == MACVLAN_MODE_SOURCE && |
| 1487 | vlan->mode != mode) |
| 1488 | macvlan_flush_sources(vlan->port, vlan); |
Michael S. Tsirkin | 266e834 | 2013-08-01 13:43:19 +0300 | [diff] [blame] | 1489 | } |
Michael S. Tsirkin | 99ffc3e7 | 2013-06-13 10:07:29 +0300 | [diff] [blame] | 1490 | |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1491 | if (data && data[IFLA_MACVLAN_FLAGS]) { |
| 1492 | __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); |
| 1493 | bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 1494 | if (macvlan_passthru(vlan->port) && promisc) { |
Michael S. Tsirkin | 99ffc3e7 | 2013-06-13 10:07:29 +0300 | [diff] [blame] | 1495 | int err; |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1496 | |
Michael S. Tsirkin | 99ffc3e7 | 2013-06-13 10:07:29 +0300 | [diff] [blame] | 1497 | if (flags & MACVLAN_FLAG_NOPROMISC) |
| 1498 | err = dev_set_promiscuity(vlan->lowerdev, -1); |
| 1499 | else |
| 1500 | err = dev_set_promiscuity(vlan->lowerdev, 1); |
| 1501 | if (err < 0) |
| 1502 | return err; |
| 1503 | } |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1504 | vlan->flags = flags; |
| 1505 | } |
Michael S. Tsirkin | 266e834 | 2013-08-01 13:43:19 +0300 | [diff] [blame] | 1506 | if (set_mode) |
| 1507 | vlan->mode = mode; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1508 | if (data && data[IFLA_MACVLAN_MACADDR_MODE]) { |
| 1509 | if (vlan->mode != MACVLAN_MODE_SOURCE) |
| 1510 | return -EINVAL; |
| 1511 | macmode = nla_get_u32(data[IFLA_MACVLAN_MACADDR_MODE]); |
| 1512 | ret = macvlan_changelink_sources(vlan, macmode, data); |
| 1513 | if (ret) |
| 1514 | return ret; |
| 1515 | } |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1516 | return 0; |
| 1517 | } |
| 1518 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1519 | static size_t macvlan_get_size_mac(const struct macvlan_dev *vlan) |
| 1520 | { |
| 1521 | if (vlan->macaddr_count == 0) |
| 1522 | return 0; |
| 1523 | return nla_total_size(0) /* IFLA_MACVLAN_MACADDR_DATA */ |
| 1524 | + vlan->macaddr_count * nla_total_size(sizeof(u8) * ETH_ALEN); |
| 1525 | } |
| 1526 | |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1527 | static size_t macvlan_get_size(const struct net_device *dev) |
| 1528 | { |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1529 | struct macvlan_dev *vlan = netdev_priv(dev); |
| 1530 | |
Eric Dumazet | 01fe944 | 2013-01-17 13:30:49 -0800 | [diff] [blame] | 1531 | return (0 |
| 1532 | + nla_total_size(4) /* IFLA_MACVLAN_MODE */ |
| 1533 | + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1534 | + nla_total_size(4) /* IFLA_MACVLAN_MACADDR_COUNT */ |
| 1535 | + macvlan_get_size_mac(vlan) /* IFLA_MACVLAN_MACADDR */ |
Eric Dumazet | 01fe944 | 2013-01-17 13:30:49 -0800 | [diff] [blame] | 1536 | ); |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1537 | } |
| 1538 | |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1539 | static int macvlan_fill_info_macaddr(struct sk_buff *skb, |
| 1540 | const struct macvlan_dev *vlan, |
| 1541 | const int i) |
| 1542 | { |
| 1543 | struct hlist_head *h = &vlan->port->vlan_source_hash[i]; |
| 1544 | struct macvlan_source_entry *entry; |
| 1545 | |
| 1546 | hlist_for_each_entry_rcu(entry, h, hlist) { |
| 1547 | if (entry->vlan != vlan) |
| 1548 | continue; |
| 1549 | if (nla_put(skb, IFLA_MACVLAN_MACADDR, ETH_ALEN, entry->addr)) |
| 1550 | return 1; |
| 1551 | } |
| 1552 | return 0; |
| 1553 | } |
| 1554 | |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1555 | static int macvlan_fill_info(struct sk_buff *skb, |
| 1556 | const struct net_device *dev) |
| 1557 | { |
| 1558 | struct macvlan_dev *vlan = netdev_priv(dev); |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1559 | int i; |
| 1560 | struct nlattr *nest; |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1561 | |
David S. Miller | ead9a76 | 2012-04-01 20:23:06 -0400 | [diff] [blame] | 1562 | if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode)) |
| 1563 | goto nla_put_failure; |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1564 | if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags)) |
| 1565 | goto nla_put_failure; |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1566 | if (nla_put_u32(skb, IFLA_MACVLAN_MACADDR_COUNT, vlan->macaddr_count)) |
| 1567 | goto nla_put_failure; |
| 1568 | if (vlan->macaddr_count > 0) { |
| 1569 | nest = nla_nest_start(skb, IFLA_MACVLAN_MACADDR_DATA); |
| 1570 | if (nest == NULL) |
| 1571 | goto nla_put_failure; |
| 1572 | |
| 1573 | for (i = 0; i < MACVLAN_HASH_SIZE; i++) { |
| 1574 | if (macvlan_fill_info_macaddr(skb, vlan, i)) |
| 1575 | goto nla_put_failure; |
| 1576 | } |
| 1577 | nla_nest_end(skb, nest); |
| 1578 | } |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1579 | return 0; |
| 1580 | |
| 1581 | nla_put_failure: |
| 1582 | return -EMSGSIZE; |
| 1583 | } |
| 1584 | |
| 1585 | static const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = { |
John Fastabend | df8ef8f | 2012-04-15 06:44:37 +0000 | [diff] [blame] | 1586 | [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, |
| 1587 | [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, |
Michael Braun | 79cf79a | 2014-09-25 16:31:08 +0200 | [diff] [blame] | 1588 | [IFLA_MACVLAN_MACADDR_MODE] = { .type = NLA_U32 }, |
| 1589 | [IFLA_MACVLAN_MACADDR] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
| 1590 | [IFLA_MACVLAN_MACADDR_DATA] = { .type = NLA_NESTED }, |
| 1591 | [IFLA_MACVLAN_MACADDR_COUNT] = { .type = NLA_U32 }, |
Arnd Bergmann | 27c0b1a | 2009-11-26 06:07:11 +0000 | [diff] [blame] | 1592 | }; |
| 1593 | |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1594 | int macvlan_link_register(struct rtnl_link_ops *ops) |
| 1595 | { |
| 1596 | /* common fields */ |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1597 | ops->validate = macvlan_validate; |
| 1598 | ops->maxtype = IFLA_MACVLAN_MAX; |
| 1599 | ops->policy = macvlan_policy; |
| 1600 | ops->changelink = macvlan_changelink; |
| 1601 | ops->get_size = macvlan_get_size; |
| 1602 | ops->fill_info = macvlan_fill_info; |
| 1603 | |
| 1604 | return rtnl_link_register(ops); |
| 1605 | }; |
| 1606 | EXPORT_SYMBOL_GPL(macvlan_link_register); |
| 1607 | |
Nicolas Dichtel | eaca400 | 2015-01-20 15:15:45 +0100 | [diff] [blame] | 1608 | static struct net *macvlan_get_link_net(const struct net_device *dev) |
| 1609 | { |
| 1610 | return dev_net(macvlan_dev_real_dev(dev)); |
| 1611 | } |
| 1612 | |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1613 | static struct rtnl_link_ops macvlan_link_ops = { |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1614 | .kind = "macvlan", |
Herbert Xu | 8a35747 | 2010-07-21 21:44:31 +0000 | [diff] [blame] | 1615 | .setup = macvlan_setup, |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1616 | .newlink = macvlan_newlink, |
| 1617 | .dellink = macvlan_dellink, |
Nicolas Dichtel | eaca400 | 2015-01-20 15:15:45 +0100 | [diff] [blame] | 1618 | .get_link_net = macvlan_get_link_net, |
Sainath Grandhi | 6fe3faf | 2017-02-10 16:03:49 -0800 | [diff] [blame] | 1619 | .priv_size = sizeof(struct macvlan_dev), |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1620 | }; |
| 1621 | |
| 1622 | static int macvlan_device_event(struct notifier_block *unused, |
| 1623 | unsigned long event, void *ptr) |
| 1624 | { |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 1625 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1626 | struct macvlan_dev *vlan, *next; |
| 1627 | struct macvlan_port *port; |
Eric Dumazet | 226bd34 | 2011-05-08 23:17:57 +0000 | [diff] [blame] | 1628 | LIST_HEAD(list_kill); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1629 | |
Jiri Pirko | a35e2c1 | 2010-06-15 03:27:57 +0000 | [diff] [blame] | 1630 | if (!macvlan_port_exists(dev)) |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1631 | return NOTIFY_DONE; |
| 1632 | |
Eric Dumazet | e052f7e | 2013-03-30 10:08:44 +0000 | [diff] [blame] | 1633 | port = macvlan_port_get_rtnl(dev); |
Jiri Pirko | a35e2c1 | 2010-06-15 03:27:57 +0000 | [diff] [blame] | 1634 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1635 | switch (event) { |
Nikolay Aleksandrov | de7d244 | 2016-01-27 17:50:43 +0100 | [diff] [blame] | 1636 | case NETDEV_UP: |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1637 | case NETDEV_CHANGE: |
| 1638 | list_for_each_entry(vlan, &port->vlans, list) |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 1639 | netif_stacked_transfer_operstate(vlan->lowerdev, |
| 1640 | vlan->dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1641 | break; |
| 1642 | case NETDEV_FEAT_CHANGE: |
| 1643 | list_for_each_entry(vlan, &port->vlans, list) { |
Patrick McHardy | 8c2acc5 | 2009-11-23 14:18:53 -0800 | [diff] [blame] | 1644 | vlan->dev->gso_max_size = dev->gso_max_size; |
Eric Dumazet | f6773c5 | 2016-03-16 21:59:49 -0700 | [diff] [blame] | 1645 | vlan->dev->gso_max_segs = dev->gso_max_segs; |
Florian Westphal | 797f87f | 2013-12-26 12:17:00 +0100 | [diff] [blame] | 1646 | netdev_update_features(vlan->dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1647 | } |
| 1648 | break; |
dingtianhong | 3763e7e | 2014-05-13 14:39:27 +0800 | [diff] [blame] | 1649 | case NETDEV_CHANGEMTU: |
| 1650 | list_for_each_entry(vlan, &port->vlans, list) { |
| 1651 | if (vlan->dev->mtu <= dev->mtu) |
| 1652 | continue; |
| 1653 | dev_set_mtu(vlan->dev, dev->mtu); |
| 1654 | } |
| 1655 | break; |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 1656 | case NETDEV_CHANGEADDR: |
Vlad Yasevich | 43c2d57 | 2017-06-21 07:59:18 -0400 | [diff] [blame] | 1657 | if (!macvlan_passthru(port)) |
dingtianhong | e289fd2 | 2014-05-30 14:32:49 +0800 | [diff] [blame] | 1658 | return NOTIFY_DONE; |
| 1659 | |
| 1660 | vlan = list_first_entry_or_null(&port->vlans, |
| 1661 | struct macvlan_dev, |
| 1662 | list); |
| 1663 | |
| 1664 | if (macvlan_sync_address(vlan->dev, dev->dev_addr)) |
| 1665 | return NOTIFY_BAD; |
| 1666 | |
| 1667 | break; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1668 | case NETDEV_UNREGISTER: |
David Lamparter | 3b27e10 | 2010-09-17 03:22:19 +0000 | [diff] [blame] | 1669 | /* twiddle thumbs on netns device moves */ |
| 1670 | if (dev->reg_state != NETREG_UNREGISTERING) |
| 1671 | break; |
| 1672 | |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1673 | list_for_each_entry_safe(vlan, next, &port->vlans, list) |
Eric Dumazet | 226bd34 | 2011-05-08 23:17:57 +0000 | [diff] [blame] | 1674 | vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill); |
| 1675 | unregister_netdevice_many(&list_kill); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1676 | break; |
Jiri Pirko | 1c01fe1 | 2010-03-10 10:30:19 +0000 | [diff] [blame] | 1677 | case NETDEV_PRE_TYPE_CHANGE: |
| 1678 | /* Forbid underlaying device to change its type. */ |
| 1679 | return NOTIFY_BAD; |
Vlad Yasevich | 4c99125 | 2014-06-04 16:23:37 -0400 | [diff] [blame] | 1680 | |
| 1681 | case NETDEV_NOTIFY_PEERS: |
| 1682 | case NETDEV_BONDING_FAILOVER: |
| 1683 | case NETDEV_RESEND_IGMP: |
| 1684 | /* Propagate to all vlans */ |
| 1685 | list_for_each_entry(vlan, &port->vlans, list) |
| 1686 | call_netdevice_notifiers(event, vlan->dev); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1687 | } |
| 1688 | return NOTIFY_DONE; |
| 1689 | } |
| 1690 | |
| 1691 | static struct notifier_block macvlan_notifier_block __read_mostly = { |
| 1692 | .notifier_call = macvlan_device_event, |
| 1693 | }; |
| 1694 | |
| 1695 | static int __init macvlan_init_module(void) |
| 1696 | { |
| 1697 | int err; |
| 1698 | |
| 1699 | register_netdevice_notifier(&macvlan_notifier_block); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1700 | |
Arnd Bergmann | fc0663d | 2010-01-30 12:23:40 +0000 | [diff] [blame] | 1701 | err = macvlan_link_register(&macvlan_link_ops); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1702 | if (err < 0) |
| 1703 | goto err1; |
| 1704 | return 0; |
| 1705 | err1: |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1706 | unregister_netdevice_notifier(&macvlan_notifier_block); |
| 1707 | return err; |
| 1708 | } |
| 1709 | |
| 1710 | static void __exit macvlan_cleanup_module(void) |
| 1711 | { |
| 1712 | rtnl_link_unregister(&macvlan_link_ops); |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 1713 | unregister_netdevice_notifier(&macvlan_notifier_block); |
| 1714 | } |
| 1715 | |
| 1716 | module_init(macvlan_init_module); |
| 1717 | module_exit(macvlan_cleanup_module); |
| 1718 | |
| 1719 | MODULE_LICENSE("GPL"); |
| 1720 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |
| 1721 | MODULE_DESCRIPTION("Driver for MAC address based VLANs"); |
| 1722 | MODULE_ALIAS_RTNL_LINK("macvlan"); |