Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License as published by the |
| 6 | * Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
Jeff Kirsher | adf8d3f | 2013-12-06 06:28:47 -0800 | [diff] [blame] | 15 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
| 17 | * The full GNU General Public License is included in this distribution in the |
| 18 | * file called LICENSE. |
| 19 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | */ |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/skbuff.h> |
| 23 | #include <linux/netdevice.h> |
| 24 | #include <linux/etherdevice.h> |
| 25 | #include <linux/pkt_sched.h> |
| 26 | #include <linux/spinlock.h> |
| 27 | #include <linux/slab.h> |
| 28 | #include <linux/timer.h> |
| 29 | #include <linux/ip.h> |
| 30 | #include <linux/ipv6.h> |
| 31 | #include <linux/if_arp.h> |
| 32 | #include <linux/if_ether.h> |
| 33 | #include <linux/if_bonding.h> |
| 34 | #include <linux/if_vlan.h> |
| 35 | #include <linux/in.h> |
| 36 | #include <net/ipx.h> |
| 37 | #include <net/arp.h> |
Vlad Yasevich | 2d1ea19 | 2008-08-28 15:38:41 -0400 | [diff] [blame] | 38 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <asm/byteorder.h> |
David S. Miller | 1ef8019 | 2014-11-10 13:27:49 -0500 | [diff] [blame] | 40 | #include <net/bonding.h> |
| 41 | #include <net/bond_alb.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Eric Dumazet | f87fda0 | 2016-06-30 16:13:41 +0200 | [diff] [blame] | 45 | static const u8 mac_bcast[ETH_ALEN + 2] __long_aligned = { |
Eric Dumazet | 885a136 | 2009-09-01 06:31:18 +0000 | [diff] [blame] | 46 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff |
| 47 | }; |
Eric Dumazet | f87fda0 | 2016-06-30 16:13:41 +0200 | [diff] [blame] | 48 | static const u8 mac_v6_allmcast[ETH_ALEN + 2] __long_aligned = { |
Eric Dumazet | 885a136 | 2009-09-01 06:31:18 +0000 | [diff] [blame] | 49 | 0x33, 0x33, 0x00, 0x00, 0x00, 0x01 |
| 50 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | static const int alb_delta_in_ticks = HZ / ALB_TIMER_TICKS_PER_SEC; |
| 52 | |
| 53 | #pragma pack(1) |
| 54 | struct learning_pkt { |
| 55 | u8 mac_dst[ETH_ALEN]; |
| 56 | u8 mac_src[ETH_ALEN]; |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 57 | __be16 type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | u8 padding[ETH_ZLEN - ETH_HLEN]; |
| 59 | }; |
| 60 | |
| 61 | struct arp_pkt { |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 62 | __be16 hw_addr_space; |
| 63 | __be16 prot_addr_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | u8 hw_addr_len; |
| 65 | u8 prot_addr_len; |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 66 | __be16 op_code; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | u8 mac_src[ETH_ALEN]; /* sender hardware address */ |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 68 | __be32 ip_src; /* sender IP address */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | u8 mac_dst[ETH_ALEN]; /* target hardware address */ |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 70 | __be32 ip_dst; /* target IP address */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | }; |
| 72 | #pragma pack() |
| 73 | |
Arnaldo Carvalho de Melo | a16aeb3 | 2007-03-10 16:07:19 -0300 | [diff] [blame] | 74 | static inline struct arp_pkt *arp_pkt(const struct sk_buff *skb) |
| 75 | { |
Arnaldo Carvalho de Melo | d56f90a | 2007-04-10 20:50:43 -0700 | [diff] [blame] | 76 | return (struct arp_pkt *)skb_network_header(skb); |
Arnaldo Carvalho de Melo | a16aeb3 | 2007-03-10 16:07:19 -0300 | [diff] [blame] | 77 | } |
| 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | /* Forward declaration */ |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 80 | static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[], |
| 81 | bool strict_match); |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 82 | static void rlb_purge_src_ip(struct bonding *bond, struct arp_pkt *arp); |
| 83 | static void rlb_src_unlink(struct bonding *bond, u32 index); |
| 84 | static void rlb_src_link(struct bonding *bond, u32 ip_src_hash, |
| 85 | u32 ip_dst_hash); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 87 | static inline u8 _simple_hash(const u8 *hash_start, int hash_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | { |
| 89 | int i; |
| 90 | u8 hash = 0; |
| 91 | |
Wang Yufen | fdb89d7 | 2014-02-14 17:15:14 +0800 | [diff] [blame] | 92 | for (i = 0; i < hash_size; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | hash ^= hash_start[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
| 95 | return hash; |
| 96 | } |
| 97 | |
| 98 | /*********************** tlb specific functions ***************************/ |
| 99 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | static inline void tlb_init_table_entry(struct tlb_client_info *entry, int save_load) |
| 101 | { |
| 102 | if (save_load) { |
| 103 | entry->load_history = 1 + entry->tx_bytes / |
| 104 | BOND_TLB_REBALANCE_INTERVAL; |
| 105 | entry->tx_bytes = 0; |
| 106 | } |
| 107 | |
| 108 | entry->tx_slave = NULL; |
| 109 | entry->next = TLB_NULL_INDEX; |
| 110 | entry->prev = TLB_NULL_INDEX; |
| 111 | } |
| 112 | |
| 113 | static inline void tlb_init_slave(struct slave *slave) |
| 114 | { |
| 115 | SLAVE_TLB_INFO(slave).load = 0; |
| 116 | SLAVE_TLB_INFO(slave).head = TLB_NULL_INDEX; |
| 117 | } |
| 118 | |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 119 | static void __tlb_clear_slave(struct bonding *bond, struct slave *slave, |
| 120 | int save_load) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | { |
| 122 | struct tlb_client_info *tx_hash_table; |
| 123 | u32 index; |
| 124 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | /* clear slave from tx_hashtbl */ |
| 126 | tx_hash_table = BOND_ALB_INFO(bond).tx_hashtbl; |
| 127 | |
Andy Gospodarek | ce39a80 | 2008-10-30 17:41:16 -0700 | [diff] [blame] | 128 | /* skip this if we've already freed the tx hash table */ |
| 129 | if (tx_hash_table) { |
| 130 | index = SLAVE_TLB_INFO(slave).head; |
| 131 | while (index != TLB_NULL_INDEX) { |
| 132 | u32 next_index = tx_hash_table[index].next; |
| 133 | tlb_init_table_entry(&tx_hash_table[index], save_load); |
| 134 | index = next_index; |
| 135 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | } |
| 137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | tlb_init_slave(slave); |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 139 | } |
Jay Vosburgh | 5af47b2 | 2006-01-09 12:14:00 -0800 | [diff] [blame] | 140 | |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 141 | static void tlb_clear_slave(struct bonding *bond, struct slave *slave, |
| 142 | int save_load) |
| 143 | { |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 144 | spin_lock_bh(&bond->mode_lock); |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 145 | __tlb_clear_slave(bond, slave, save_load); |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 146 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | /* Must be called before starting the monitor timer */ |
| 150 | static int tlb_initialize(struct bonding *bond) |
| 151 | { |
| 152 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 153 | int size = TLB_HASH_TABLE_SIZE * sizeof(struct tlb_client_info); |
Mitch Williams | 0d206a3 | 2005-11-09 10:35:30 -0800 | [diff] [blame] | 154 | struct tlb_client_info *new_hashtbl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | int i; |
| 156 | |
Joe Jin | 243cb4e | 2007-02-06 14:16:40 -0800 | [diff] [blame] | 157 | new_hashtbl = kzalloc(size, GFP_KERNEL); |
Joe Perches | e404dec | 2012-01-29 12:56:23 +0000 | [diff] [blame] | 158 | if (!new_hashtbl) |
Amitoj Kaur Chawla | 6d9b6f4 | 2016-02-07 10:56:25 +0530 | [diff] [blame] | 159 | return -ENOMEM; |
Joe Perches | e404dec | 2012-01-29 12:56:23 +0000 | [diff] [blame] | 160 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 161 | spin_lock_bh(&bond->mode_lock); |
Mitch Williams | 0d206a3 | 2005-11-09 10:35:30 -0800 | [diff] [blame] | 162 | |
| 163 | bond_info->tx_hashtbl = new_hashtbl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Wang Yufen | fdb89d7 | 2014-02-14 17:15:14 +0800 | [diff] [blame] | 165 | for (i = 0; i < TLB_HASH_TABLE_SIZE; i++) |
Peter Pan(潘卫平) | 38dbaf0 | 2011-04-08 03:40:19 +0000 | [diff] [blame] | 166 | tlb_init_table_entry(&bond_info->tx_hashtbl[i], 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 168 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
| 170 | return 0; |
| 171 | } |
| 172 | |
| 173 | /* Must be called only after all slaves have been released */ |
| 174 | static void tlb_deinitialize(struct bonding *bond) |
| 175 | { |
| 176 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 177 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 178 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | kfree(bond_info->tx_hashtbl); |
| 181 | bond_info->tx_hashtbl = NULL; |
| 182 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 183 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | } |
| 185 | |
Jiri Pirko | 097811b | 2010-05-19 03:26:39 +0000 | [diff] [blame] | 186 | static long long compute_gap(struct slave *slave) |
| 187 | { |
| 188 | return (s64) (slave->speed << 20) - /* Convert to Megabit per sec */ |
| 189 | (s64) (SLAVE_TLB_INFO(slave).load << 3); /* Bytes to bits */ |
| 190 | } |
| 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | static struct slave *tlb_get_least_loaded_slave(struct bonding *bond) |
| 193 | { |
| 194 | struct slave *slave, *least_loaded; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 195 | struct list_head *iter; |
Jiri Pirko | 097811b | 2010-05-19 03:26:39 +0000 | [diff] [blame] | 196 | long long max_gap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Jiri Pirko | 097811b | 2010-05-19 03:26:39 +0000 | [diff] [blame] | 198 | least_loaded = NULL; |
| 199 | max_gap = LLONG_MIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
| 201 | /* Find the slave with the largest gap */ |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 202 | bond_for_each_slave_rcu(bond, slave, iter) { |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 203 | if (bond_slave_can_tx(slave)) { |
Jiri Pirko | 097811b | 2010-05-19 03:26:39 +0000 | [diff] [blame] | 204 | long long gap = compute_gap(slave); |
| 205 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | if (max_gap < gap) { |
| 207 | least_loaded = slave; |
| 208 | max_gap = gap; |
| 209 | } |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | return least_loaded; |
| 214 | } |
| 215 | |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 216 | static struct slave *__tlb_choose_channel(struct bonding *bond, u32 hash_index, |
| 217 | u32 skb_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
| 219 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 220 | struct tlb_client_info *hash_table; |
| 221 | struct slave *assigned_slave; |
| 222 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | hash_table = bond_info->tx_hashtbl; |
| 224 | assigned_slave = hash_table[hash_index].tx_slave; |
| 225 | if (!assigned_slave) { |
| 226 | assigned_slave = tlb_get_least_loaded_slave(bond); |
| 227 | |
| 228 | if (assigned_slave) { |
| 229 | struct tlb_slave_info *slave_info = |
| 230 | &(SLAVE_TLB_INFO(assigned_slave)); |
| 231 | u32 next_index = slave_info->head; |
| 232 | |
| 233 | hash_table[hash_index].tx_slave = assigned_slave; |
| 234 | hash_table[hash_index].next = next_index; |
| 235 | hash_table[hash_index].prev = TLB_NULL_INDEX; |
| 236 | |
Wang Yufen | fdb89d7 | 2014-02-14 17:15:14 +0800 | [diff] [blame] | 237 | if (next_index != TLB_NULL_INDEX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | hash_table[next_index].prev = hash_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
| 240 | slave_info->head = hash_index; |
| 241 | slave_info->load += |
| 242 | hash_table[hash_index].load_history; |
| 243 | } |
| 244 | } |
| 245 | |
Wang Yufen | fdb89d7 | 2014-02-14 17:15:14 +0800 | [diff] [blame] | 246 | if (assigned_slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | hash_table[hash_index].tx_bytes += skb_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | return assigned_slave; |
| 250 | } |
| 251 | |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 252 | static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, |
| 253 | u32 skb_len) |
| 254 | { |
| 255 | struct slave *tx_slave; |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 256 | |
| 257 | /* We don't need to disable softirq here, becase |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 258 | * tlb_choose_channel() is only called by bond_alb_xmit() |
| 259 | * which already has softirq disabled. |
| 260 | */ |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 261 | spin_lock(&bond->mode_lock); |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 262 | tx_slave = __tlb_choose_channel(bond, hash_index, skb_len); |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 263 | spin_unlock(&bond->mode_lock); |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 264 | |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 265 | return tx_slave; |
| 266 | } |
| 267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | /*********************** rlb specific functions ***************************/ |
Maxim Uvarov | f515e6b | 2012-01-09 12:01:37 +0000 | [diff] [blame] | 269 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | /* when an ARP REPLY is received from a client update its info |
| 271 | * in the rx_hashtbl |
| 272 | */ |
| 273 | static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp) |
| 274 | { |
| 275 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 276 | struct rlb_client_info *client_info; |
| 277 | u32 hash_index; |
| 278 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 279 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Wang Yufen | b85b6fb | 2014-02-14 17:15:12 +0800 | [diff] [blame] | 281 | hash_index = _simple_hash((u8 *)&(arp->ip_src), sizeof(arp->ip_src)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
| 283 | |
| 284 | if ((client_info->assigned) && |
| 285 | (client_info->ip_src == arp->ip_dst) && |
Flavio Leitner | 42d782a | 2010-06-29 08:24:39 +0000 | [diff] [blame] | 286 | (client_info->ip_dst == arp->ip_src) && |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 287 | (!ether_addr_equal_64bits(client_info->mac_dst, arp->mac_src))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | /* update the clients MAC address */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 289 | ether_addr_copy(client_info->mac_dst, arp->mac_src); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | client_info->ntt = 1; |
| 291 | bond_info->rx_ntt = 1; |
| 292 | } |
| 293 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 294 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } |
| 296 | |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 297 | static int rlb_arp_recv(const struct sk_buff *skb, struct bonding *bond, |
| 298 | struct slave *slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | { |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 300 | struct arp_pkt *arp, _arp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 302 | if (skb->protocol != cpu_to_be16(ETH_P_ARP)) |
David S. Miller | b99215c | 2012-05-13 15:45:13 -0400 | [diff] [blame] | 303 | goto out; |
Jay Vosburgh | 6146b1a | 2008-11-04 17:51:15 -0800 | [diff] [blame] | 304 | |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 305 | arp = skb_header_pointer(skb, 0, sizeof(_arp), &_arp); |
| 306 | if (!arp) |
David S. Miller | b99215c | 2012-05-13 15:45:13 -0400 | [diff] [blame] | 307 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 309 | /* We received an ARP from arp->ip_src. |
| 310 | * We might have used this IP address previously (on the bonding host |
| 311 | * itself or on a system that is bridged together with the bond). |
| 312 | * However, if arp->mac_src is different than what is stored in |
| 313 | * rx_hashtbl, some other host is now using the IP and we must prevent |
| 314 | * sending out client updates with this IP address and the old MAC |
| 315 | * address. |
| 316 | * Clean up all hash table entries that have this address as ip_src but |
| 317 | * have a different mac_src. |
| 318 | */ |
| 319 | rlb_purge_src_ip(bond, arp); |
| 320 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | if (arp->op_code == htons(ARPOP_REPLY)) { |
| 322 | /* update rx hash table for this ARP */ |
| 323 | rlb_update_entry_from_arp(bond, arp); |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 324 | netdev_dbg(bond->dev, "Server received an ARP Reply from client\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | } |
David S. Miller | b99215c | 2012-05-13 15:45:13 -0400 | [diff] [blame] | 326 | out: |
| 327 | return RX_HANDLER_ANOTHER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Nikolay Aleksandrov | 8c0bc55 | 2014-09-11 22:49:28 +0200 | [diff] [blame] | 330 | /* Caller must hold rcu_read_lock() */ |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 331 | static struct slave *__rlb_next_rx_slave(struct bonding *bond) |
| 332 | { |
| 333 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 334 | struct slave *before = NULL, *rx_slave = NULL, *slave; |
| 335 | struct list_head *iter; |
| 336 | bool found = false; |
| 337 | |
| 338 | bond_for_each_slave_rcu(bond, slave, iter) { |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 339 | if (!bond_slave_can_tx(slave)) |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 340 | continue; |
| 341 | if (!found) { |
| 342 | if (!before || before->speed < slave->speed) |
| 343 | before = slave; |
| 344 | } else { |
| 345 | if (!rx_slave || rx_slave->speed < slave->speed) |
| 346 | rx_slave = slave; |
| 347 | } |
| 348 | if (slave == bond_info->rx_slave) |
| 349 | found = true; |
| 350 | } |
| 351 | /* we didn't find anything after the current or we have something |
| 352 | * better before and up to the current slave |
| 353 | */ |
| 354 | if (!rx_slave || (before && rx_slave->speed < before->speed)) |
| 355 | rx_slave = before; |
| 356 | |
| 357 | if (rx_slave) |
| 358 | bond_info->rx_slave = rx_slave; |
| 359 | |
| 360 | return rx_slave; |
| 361 | } |
| 362 | |
Nikolay Aleksandrov | 56924c3 | 2014-09-15 17:19:33 +0200 | [diff] [blame] | 363 | /* Caller must hold RTNL, rcu_read_lock is obtained only to silence checkers */ |
| 364 | static struct slave *rlb_next_rx_slave(struct bonding *bond) |
| 365 | { |
| 366 | struct slave *rx_slave; |
| 367 | |
| 368 | ASSERT_RTNL(); |
| 369 | |
| 370 | rcu_read_lock(); |
| 371 | rx_slave = __rlb_next_rx_slave(bond); |
| 372 | rcu_read_unlock(); |
| 373 | |
| 374 | return rx_slave; |
| 375 | } |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | /* teach the switch the mac of a disabled slave |
| 378 | * on the primary for fault tolerance |
| 379 | * |
Nikolay Aleksandrov | 62c5f51 | 2014-09-11 22:49:23 +0200 | [diff] [blame] | 380 | * Caller must hold RTNL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | */ |
| 382 | static void rlb_teach_disabled_mac_on_primary(struct bonding *bond, u8 addr[]) |
| 383 | { |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 384 | struct slave *curr_active = rtnl_dereference(bond->curr_active_slave); |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 385 | |
| 386 | if (!curr_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | |
| 389 | if (!bond->alb_info.primary_is_promisc) { |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 390 | if (!dev_set_promiscuity(curr_active->dev, 1)) |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 391 | bond->alb_info.primary_is_promisc = 1; |
| 392 | else |
| 393 | bond->alb_info.primary_is_promisc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | bond->alb_info.rlb_promisc_timeout_counter = 0; |
| 397 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 398 | alb_send_learning_packets(curr_active, addr, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | /* slave being removed should not be active at this point |
| 402 | * |
dingtianhong | b2e7ace | 2013-12-13 10:19:32 +0800 | [diff] [blame] | 403 | * Caller must hold rtnl. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | */ |
| 405 | static void rlb_clear_slave(struct bonding *bond, struct slave *slave) |
| 406 | { |
| 407 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 408 | struct rlb_client_info *rx_hash_table; |
| 409 | u32 index, next_index; |
| 410 | |
| 411 | /* clear slave from rx_hashtbl */ |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 412 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | |
| 414 | rx_hash_table = bond_info->rx_hashtbl; |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 415 | index = bond_info->rx_hashtbl_used_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | for (; index != RLB_NULL_INDEX; index = next_index) { |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 417 | next_index = rx_hash_table[index].used_next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | if (rx_hash_table[index].slave == slave) { |
| 419 | struct slave *assigned_slave = rlb_next_rx_slave(bond); |
| 420 | |
| 421 | if (assigned_slave) { |
| 422 | rx_hash_table[index].slave = assigned_slave; |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 423 | if (!ether_addr_equal_64bits(rx_hash_table[index].mac_dst, |
| 424 | mac_bcast)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | bond_info->rx_hashtbl[index].ntt = 1; |
| 426 | bond_info->rx_ntt = 1; |
| 427 | /* A slave has been removed from the |
| 428 | * table because it is either disabled |
| 429 | * or being released. We must retry the |
| 430 | * update to avoid clients from not |
| 431 | * being updated & disconnecting when |
| 432 | * there is stress |
| 433 | */ |
| 434 | bond_info->rlb_update_retry_counter = |
| 435 | RLB_UPDATE_RETRY; |
| 436 | } |
| 437 | } else { /* there is no active slave */ |
| 438 | rx_hash_table[index].slave = NULL; |
| 439 | } |
| 440 | } |
| 441 | } |
| 442 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 443 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 445 | if (slave != rtnl_dereference(bond->curr_active_slave)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | rlb_teach_disabled_mac_on_primary(bond, slave->dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | static void rlb_update_client(struct rlb_client_info *client_info) |
| 450 | { |
| 451 | int i; |
| 452 | |
Wang Yufen | 35d75ee | 2014-02-14 17:15:15 +0800 | [diff] [blame] | 453 | if (!client_info->slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | |
| 456 | for (i = 0; i < RLB_ARP_BURST_SIZE; i++) { |
| 457 | struct sk_buff *skb; |
| 458 | |
| 459 | skb = arp_create(ARPOP_REPLY, ETH_P_ARP, |
| 460 | client_info->ip_dst, |
| 461 | client_info->slave->dev, |
| 462 | client_info->ip_src, |
| 463 | client_info->mac_dst, |
| 464 | client_info->slave->dev->dev_addr, |
| 465 | client_info->mac_dst); |
| 466 | if (!skb) { |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 467 | netdev_err(client_info->slave->bond->dev, |
| 468 | "failed to create an ARP packet\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | continue; |
| 470 | } |
| 471 | |
| 472 | skb->dev = client_info->slave->dev; |
| 473 | |
Veaceslav Falico | d3ab3ff | 2013-08-29 23:38:57 +0200 | [diff] [blame] | 474 | if (client_info->vlan_id) { |
Jiri Pirko | b4bef1b | 2014-11-19 14:04:57 +0100 | [diff] [blame] | 475 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
| 476 | client_info->vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | arp_xmit(skb); |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | /* sends ARP REPLIES that update the clients that need updating */ |
| 484 | static void rlb_update_rx_clients(struct bonding *bond) |
| 485 | { |
| 486 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 487 | struct rlb_client_info *client_info; |
| 488 | u32 hash_index; |
| 489 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 490 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 492 | hash_index = bond_info->rx_hashtbl_used_head; |
| 493 | for (; hash_index != RLB_NULL_INDEX; |
| 494 | hash_index = client_info->used_next) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
| 496 | if (client_info->ntt) { |
| 497 | rlb_update_client(client_info); |
Wang Yufen | 35d75ee | 2014-02-14 17:15:15 +0800 | [diff] [blame] | 498 | if (bond_info->rlb_update_retry_counter == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | client_info->ntt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | } |
| 501 | } |
| 502 | |
Thadeu Lima de Souza Cascardo | 94e2bd6 | 2009-10-16 15:20:49 +0200 | [diff] [blame] | 503 | /* do not update the entries again until this counter is zero so that |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | * not to confuse the clients. |
| 505 | */ |
| 506 | bond_info->rlb_update_delay_counter = RLB_UPDATE_DELAY; |
| 507 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 508 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | /* The slave was assigned a new mac address - update the clients */ |
| 512 | static void rlb_req_update_slave_clients(struct bonding *bond, struct slave *slave) |
| 513 | { |
| 514 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 515 | struct rlb_client_info *client_info; |
| 516 | int ntt = 0; |
| 517 | u32 hash_index; |
| 518 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 519 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 521 | hash_index = bond_info->rx_hashtbl_used_head; |
| 522 | for (; hash_index != RLB_NULL_INDEX; |
| 523 | hash_index = client_info->used_next) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
| 525 | |
| 526 | if ((client_info->slave == slave) && |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 527 | !ether_addr_equal_64bits(client_info->mac_dst, mac_bcast)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | client_info->ntt = 1; |
| 529 | ntt = 1; |
| 530 | } |
| 531 | } |
| 532 | |
Wang Yufen | 4708a1b | 2014-02-14 17:15:13 +0800 | [diff] [blame] | 533 | /* update the team's flag only after the whole iteration */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | if (ntt) { |
| 535 | bond_info->rx_ntt = 1; |
Wang Yufen | 4708a1b | 2014-02-14 17:15:13 +0800 | [diff] [blame] | 536 | /* fasten the change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | bond_info->rlb_update_retry_counter = RLB_UPDATE_RETRY; |
| 538 | } |
| 539 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 540 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | /* mark all clients using src_ip to be updated */ |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 544 | static void rlb_req_update_subnet_clients(struct bonding *bond, __be32 src_ip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | { |
| 546 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 547 | struct rlb_client_info *client_info; |
| 548 | u32 hash_index; |
| 549 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 550 | spin_lock(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 552 | hash_index = bond_info->rx_hashtbl_used_head; |
| 553 | for (; hash_index != RLB_NULL_INDEX; |
| 554 | hash_index = client_info->used_next) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
| 556 | |
| 557 | if (!client_info->slave) { |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 558 | netdev_err(bond->dev, "found a client with no channel in the client's hash table\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | continue; |
| 560 | } |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 561 | /* update all clients using this src_ip, that are not assigned |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | * to the team's address (curr_active_slave) and have a known |
| 563 | * unicast mac address. |
| 564 | */ |
| 565 | if ((client_info->ip_src == src_ip) && |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 566 | !ether_addr_equal_64bits(client_info->slave->dev->dev_addr, |
| 567 | bond->dev->dev_addr) && |
| 568 | !ether_addr_equal_64bits(client_info->mac_dst, mac_bcast)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | client_info->ntt = 1; |
| 570 | bond_info->rx_ntt = 1; |
| 571 | } |
| 572 | } |
| 573 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 574 | spin_unlock(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
| 576 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bond) |
| 578 | { |
| 579 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
Arnaldo Carvalho de Melo | a16aeb3 | 2007-03-10 16:07:19 -0300 | [diff] [blame] | 580 | struct arp_pkt *arp = arp_pkt(skb); |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 581 | struct slave *assigned_slave, *curr_active_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | struct rlb_client_info *client_info; |
| 583 | u32 hash_index = 0; |
| 584 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 585 | spin_lock(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 587 | curr_active_slave = rcu_dereference(bond->curr_active_slave); |
| 588 | |
Amerigo Wang | e364a34 | 2011-02-27 23:34:28 +0000 | [diff] [blame] | 589 | hash_index = _simple_hash((u8 *)&arp->ip_dst, sizeof(arp->ip_dst)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
| 591 | |
| 592 | if (client_info->assigned) { |
| 593 | if ((client_info->ip_src == arp->ip_src) && |
| 594 | (client_info->ip_dst == arp->ip_dst)) { |
| 595 | /* the entry is already assigned to this client */ |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 596 | if (!ether_addr_equal_64bits(arp->mac_dst, mac_bcast)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | /* update mac address from arp */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 598 | ether_addr_copy(client_info->mac_dst, arp->mac_dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | } |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 600 | ether_addr_copy(client_info->mac_src, arp->mac_src); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
| 602 | assigned_slave = client_info->slave; |
| 603 | if (assigned_slave) { |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 604 | spin_unlock(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | return assigned_slave; |
| 606 | } |
| 607 | } else { |
| 608 | /* the entry is already assigned to some other client, |
| 609 | * move the old client to primary (curr_active_slave) so |
| 610 | * that the new client can be assigned to this entry. |
| 611 | */ |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 612 | if (curr_active_slave && |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 613 | client_info->slave != curr_active_slave) { |
| 614 | client_info->slave = curr_active_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | rlb_update_client(client_info); |
| 616 | } |
| 617 | } |
| 618 | } |
| 619 | /* assign a new slave */ |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 620 | assigned_slave = __rlb_next_rx_slave(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
| 622 | if (assigned_slave) { |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 623 | if (!(client_info->assigned && |
| 624 | client_info->ip_src == arp->ip_src)) { |
| 625 | /* ip_src is going to be updated, |
| 626 | * fix the src hash list |
| 627 | */ |
| 628 | u32 hash_src = _simple_hash((u8 *)&arp->ip_src, |
| 629 | sizeof(arp->ip_src)); |
| 630 | rlb_src_unlink(bond, hash_index); |
| 631 | rlb_src_link(bond, hash_src, hash_index); |
| 632 | } |
| 633 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | client_info->ip_src = arp->ip_src; |
| 635 | client_info->ip_dst = arp->ip_dst; |
| 636 | /* arp->mac_dst is broadcast for arp reqeusts. |
| 637 | * will be updated with clients actual unicast mac address |
| 638 | * upon receiving an arp reply. |
| 639 | */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 640 | ether_addr_copy(client_info->mac_dst, arp->mac_dst); |
| 641 | ether_addr_copy(client_info->mac_src, arp->mac_src); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | client_info->slave = assigned_slave; |
| 643 | |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 644 | if (!ether_addr_equal_64bits(client_info->mac_dst, mac_bcast)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | client_info->ntt = 1; |
| 646 | bond->alb_info.rx_ntt = 1; |
| 647 | } else { |
| 648 | client_info->ntt = 0; |
| 649 | } |
| 650 | |
dingtianhong | fb00bc2 | 2014-03-12 17:31:59 +0800 | [diff] [blame] | 651 | if (vlan_get_tag(skb, &client_info->vlan_id)) |
Veaceslav Falico | d3ab3ff | 2013-08-29 23:38:57 +0200 | [diff] [blame] | 652 | client_info->vlan_id = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
| 654 | if (!client_info->assigned) { |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 655 | u32 prev_tbl_head = bond_info->rx_hashtbl_used_head; |
| 656 | bond_info->rx_hashtbl_used_head = hash_index; |
| 657 | client_info->used_next = prev_tbl_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | if (prev_tbl_head != RLB_NULL_INDEX) { |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 659 | bond_info->rx_hashtbl[prev_tbl_head].used_prev = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | hash_index; |
| 661 | } |
| 662 | client_info->assigned = 1; |
| 663 | } |
| 664 | } |
| 665 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 666 | spin_unlock(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | |
| 668 | return assigned_slave; |
| 669 | } |
| 670 | |
| 671 | /* chooses (and returns) transmit channel for arp reply |
| 672 | * does not choose channel for other arp types since they are |
| 673 | * sent on the curr_active_slave |
| 674 | */ |
| 675 | static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond) |
| 676 | { |
Arnaldo Carvalho de Melo | a16aeb3 | 2007-03-10 16:07:19 -0300 | [diff] [blame] | 677 | struct arp_pkt *arp = arp_pkt(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | struct slave *tx_slave = NULL; |
| 679 | |
zheng.li | 567b871 | 2012-11-27 23:57:04 +0000 | [diff] [blame] | 680 | /* Don't modify or load balance ARPs that do not originate locally |
| 681 | * (e.g.,arrive via a bridge). |
| 682 | */ |
Vlad Yasevich | 14af996 | 2014-06-04 16:23:38 -0400 | [diff] [blame] | 683 | if (!bond_slave_has_mac_rx(bond, arp->mac_src)) |
zheng.li | 567b871 | 2012-11-27 23:57:04 +0000 | [diff] [blame] | 684 | return NULL; |
| 685 | |
Brian Haley | f14c4e4 | 2008-09-02 10:08:08 -0400 | [diff] [blame] | 686 | if (arp->op_code == htons(ARPOP_REPLY)) { |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 687 | /* the arp must be sent on the selected rx channel */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | tx_slave = rlb_choose_channel(skb, bond); |
Wang Yufen | 35d75ee | 2014-02-14 17:15:15 +0800 | [diff] [blame] | 689 | if (tx_slave) |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 690 | ether_addr_copy(arp->mac_src, tx_slave->dev->dev_addr); |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 691 | netdev_dbg(bond->dev, "Server sent ARP Reply packet\n"); |
Brian Haley | f14c4e4 | 2008-09-02 10:08:08 -0400 | [diff] [blame] | 692 | } else if (arp->op_code == htons(ARPOP_REQUEST)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | /* Create an entry in the rx_hashtbl for this client as a |
| 694 | * place holder. |
| 695 | * When the arp reply is received the entry will be updated |
| 696 | * with the correct unicast address of the client. |
| 697 | */ |
| 698 | rlb_choose_channel(skb, bond); |
| 699 | |
Peter Pan(潘卫平) | 77c8e2c | 2011-04-11 00:16:32 +0000 | [diff] [blame] | 700 | /* The ARP reply packets must be delayed so that |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | * they can cancel out the influence of the ARP request. |
| 702 | */ |
| 703 | bond->alb_info.rlb_update_delay_counter = RLB_UPDATE_DELAY; |
| 704 | |
| 705 | /* arp requests are broadcast and are sent on the primary |
| 706 | * the arp request will collapse all clients on the subnet to |
| 707 | * the primary slave. We must register these clients to be |
| 708 | * updated with their assigned mac. |
| 709 | */ |
| 710 | rlb_req_update_subnet_clients(bond, arp->ip_src); |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 711 | netdev_dbg(bond->dev, "Server sent ARP Request packet\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | return tx_slave; |
| 715 | } |
| 716 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | static void rlb_rebalance(struct bonding *bond) |
| 718 | { |
| 719 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 720 | struct slave *assigned_slave; |
| 721 | struct rlb_client_info *client_info; |
| 722 | int ntt; |
| 723 | u32 hash_index; |
| 724 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 725 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | |
| 727 | ntt = 0; |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 728 | hash_index = bond_info->rx_hashtbl_used_head; |
| 729 | for (; hash_index != RLB_NULL_INDEX; |
| 730 | hash_index = client_info->used_next) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
dingtianhong | 733ab63 | 2013-12-13 10:19:45 +0800 | [diff] [blame] | 732 | assigned_slave = __rlb_next_rx_slave(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | if (assigned_slave && (client_info->slave != assigned_slave)) { |
| 734 | client_info->slave = assigned_slave; |
| 735 | client_info->ntt = 1; |
| 736 | ntt = 1; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | /* update the team's flag only after the whole iteration */ |
Wang Yufen | 35d75ee | 2014-02-14 17:15:15 +0800 | [diff] [blame] | 741 | if (ntt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | bond_info->rx_ntt = 1; |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 743 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | } |
| 745 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 746 | /* Caller must hold mode_lock */ |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 747 | static void rlb_init_table_entry_dst(struct rlb_client_info *entry) |
| 748 | { |
| 749 | entry->used_next = RLB_NULL_INDEX; |
| 750 | entry->used_prev = RLB_NULL_INDEX; |
| 751 | entry->assigned = 0; |
| 752 | entry->slave = NULL; |
Veaceslav Falico | d3ab3ff | 2013-08-29 23:38:57 +0200 | [diff] [blame] | 753 | entry->vlan_id = 0; |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 754 | } |
| 755 | static void rlb_init_table_entry_src(struct rlb_client_info *entry) |
| 756 | { |
| 757 | entry->src_first = RLB_NULL_INDEX; |
| 758 | entry->src_prev = RLB_NULL_INDEX; |
| 759 | entry->src_next = RLB_NULL_INDEX; |
| 760 | } |
| 761 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | static void rlb_init_table_entry(struct rlb_client_info *entry) |
| 763 | { |
| 764 | memset(entry, 0, sizeof(struct rlb_client_info)); |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 765 | rlb_init_table_entry_dst(entry); |
| 766 | rlb_init_table_entry_src(entry); |
| 767 | } |
| 768 | |
| 769 | static void rlb_delete_table_entry_dst(struct bonding *bond, u32 index) |
| 770 | { |
| 771 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 772 | u32 next_index = bond_info->rx_hashtbl[index].used_next; |
| 773 | u32 prev_index = bond_info->rx_hashtbl[index].used_prev; |
| 774 | |
| 775 | if (index == bond_info->rx_hashtbl_used_head) |
| 776 | bond_info->rx_hashtbl_used_head = next_index; |
| 777 | if (prev_index != RLB_NULL_INDEX) |
| 778 | bond_info->rx_hashtbl[prev_index].used_next = next_index; |
| 779 | if (next_index != RLB_NULL_INDEX) |
| 780 | bond_info->rx_hashtbl[next_index].used_prev = prev_index; |
| 781 | } |
| 782 | |
| 783 | /* unlink a rlb hash table entry from the src list */ |
| 784 | static void rlb_src_unlink(struct bonding *bond, u32 index) |
| 785 | { |
| 786 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 787 | u32 next_index = bond_info->rx_hashtbl[index].src_next; |
| 788 | u32 prev_index = bond_info->rx_hashtbl[index].src_prev; |
| 789 | |
| 790 | bond_info->rx_hashtbl[index].src_next = RLB_NULL_INDEX; |
| 791 | bond_info->rx_hashtbl[index].src_prev = RLB_NULL_INDEX; |
| 792 | |
| 793 | if (next_index != RLB_NULL_INDEX) |
| 794 | bond_info->rx_hashtbl[next_index].src_prev = prev_index; |
| 795 | |
| 796 | if (prev_index == RLB_NULL_INDEX) |
| 797 | return; |
| 798 | |
| 799 | /* is prev_index pointing to the head of this list? */ |
| 800 | if (bond_info->rx_hashtbl[prev_index].src_first == index) |
| 801 | bond_info->rx_hashtbl[prev_index].src_first = next_index; |
| 802 | else |
| 803 | bond_info->rx_hashtbl[prev_index].src_next = next_index; |
| 804 | |
| 805 | } |
| 806 | |
| 807 | static void rlb_delete_table_entry(struct bonding *bond, u32 index) |
| 808 | { |
| 809 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 810 | struct rlb_client_info *entry = &(bond_info->rx_hashtbl[index]); |
| 811 | |
| 812 | rlb_delete_table_entry_dst(bond, index); |
| 813 | rlb_init_table_entry_dst(entry); |
| 814 | |
| 815 | rlb_src_unlink(bond, index); |
| 816 | } |
| 817 | |
| 818 | /* add the rx_hashtbl[ip_dst_hash] entry to the list |
| 819 | * of entries with identical ip_src_hash |
| 820 | */ |
| 821 | static void rlb_src_link(struct bonding *bond, u32 ip_src_hash, u32 ip_dst_hash) |
| 822 | { |
| 823 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 824 | u32 next; |
| 825 | |
| 826 | bond_info->rx_hashtbl[ip_dst_hash].src_prev = ip_src_hash; |
| 827 | next = bond_info->rx_hashtbl[ip_src_hash].src_first; |
| 828 | bond_info->rx_hashtbl[ip_dst_hash].src_next = next; |
| 829 | if (next != RLB_NULL_INDEX) |
| 830 | bond_info->rx_hashtbl[next].src_prev = ip_dst_hash; |
| 831 | bond_info->rx_hashtbl[ip_src_hash].src_first = ip_dst_hash; |
| 832 | } |
| 833 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 834 | /* deletes all rx_hashtbl entries with arp->ip_src if their mac_src does |
| 835 | * not match arp->mac_src |
| 836 | */ |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 837 | static void rlb_purge_src_ip(struct bonding *bond, struct arp_pkt *arp) |
| 838 | { |
| 839 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
Wang Yufen | b85b6fb | 2014-02-14 17:15:12 +0800 | [diff] [blame] | 840 | u32 ip_src_hash = _simple_hash((u8 *)&(arp->ip_src), sizeof(arp->ip_src)); |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 841 | u32 index; |
| 842 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 843 | spin_lock_bh(&bond->mode_lock); |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 844 | |
| 845 | index = bond_info->rx_hashtbl[ip_src_hash].src_first; |
| 846 | while (index != RLB_NULL_INDEX) { |
| 847 | struct rlb_client_info *entry = &(bond_info->rx_hashtbl[index]); |
| 848 | u32 next_index = entry->src_next; |
| 849 | if (entry->ip_src == arp->ip_src && |
| 850 | !ether_addr_equal_64bits(arp->mac_src, entry->mac_src)) |
| 851 | rlb_delete_table_entry(bond, index); |
| 852 | index = next_index; |
| 853 | } |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 854 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | } |
| 856 | |
| 857 | static int rlb_initialize(struct bonding *bond) |
| 858 | { |
| 859 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
Mitch Williams | 0d206a3 | 2005-11-09 10:35:30 -0800 | [diff] [blame] | 860 | struct rlb_client_info *new_hashtbl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | int size = RLB_HASH_TABLE_SIZE * sizeof(struct rlb_client_info); |
| 862 | int i; |
| 863 | |
Mitch Williams | 0d206a3 | 2005-11-09 10:35:30 -0800 | [diff] [blame] | 864 | new_hashtbl = kmalloc(size, GFP_KERNEL); |
Joe Perches | e404dec | 2012-01-29 12:56:23 +0000 | [diff] [blame] | 865 | if (!new_hashtbl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | return -1; |
Joe Perches | e404dec | 2012-01-29 12:56:23 +0000 | [diff] [blame] | 867 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 868 | spin_lock_bh(&bond->mode_lock); |
Mitch Williams | 0d206a3 | 2005-11-09 10:35:30 -0800 | [diff] [blame] | 869 | |
| 870 | bond_info->rx_hashtbl = new_hashtbl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 872 | bond_info->rx_hashtbl_used_head = RLB_NULL_INDEX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
Wang Yufen | 35d75ee | 2014-02-14 17:15:15 +0800 | [diff] [blame] | 874 | for (i = 0; i < RLB_HASH_TABLE_SIZE; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | rlb_init_table_entry(bond_info->rx_hashtbl + i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 877 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | /* register to receive ARPs */ |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 880 | bond->recv_probe = rlb_arp_recv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
| 882 | return 0; |
| 883 | } |
| 884 | |
| 885 | static void rlb_deinitialize(struct bonding *bond) |
| 886 | { |
| 887 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 888 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 889 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
| 891 | kfree(bond_info->rx_hashtbl); |
| 892 | bond_info->rx_hashtbl = NULL; |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 893 | bond_info->rx_hashtbl_used_head = RLB_NULL_INDEX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 895 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | } |
| 897 | |
| 898 | static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id) |
| 899 | { |
| 900 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 901 | u32 curr_index; |
| 902 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 903 | spin_lock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 905 | curr_index = bond_info->rx_hashtbl_used_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | while (curr_index != RLB_NULL_INDEX) { |
| 907 | struct rlb_client_info *curr = &(bond_info->rx_hashtbl[curr_index]); |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 908 | u32 next_index = bond_info->rx_hashtbl[curr_index].used_next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
Veaceslav Falico | d3ab3ff | 2013-08-29 23:38:57 +0200 | [diff] [blame] | 910 | if (curr->vlan_id == vlan_id) |
Jiri Bohac | e53665c | 2012-11-28 04:42:14 +0000 | [diff] [blame] | 911 | rlb_delete_table_entry(bond, curr_index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
| 913 | curr_index = next_index; |
| 914 | } |
| 915 | |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 916 | spin_unlock_bh(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | /*********************** tlb/rlb shared functions *********************/ |
| 920 | |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 921 | static void alb_send_lp_vid(struct slave *slave, u8 mac_addr[], |
Vlad Yasevich | d6b694c | 2014-05-21 11:24:39 -0400 | [diff] [blame] | 922 | __be16 vlan_proto, u16 vid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | struct learning_pkt pkt; |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 925 | struct sk_buff *skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | int size = sizeof(struct learning_pkt); |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 927 | char *data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | |
| 929 | memset(&pkt, 0, size); |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 930 | ether_addr_copy(pkt.mac_dst, mac_addr); |
| 931 | ether_addr_copy(pkt.mac_src, mac_addr); |
Veaceslav Falico | 96a0922 | 2014-03-13 12:41:58 +0100 | [diff] [blame] | 932 | pkt.type = cpu_to_be16(ETH_P_LOOPBACK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 934 | skb = dev_alloc_skb(size); |
| 935 | if (!skb) |
| 936 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 938 | data = skb_put(skb, size); |
| 939 | memcpy(data, &pkt, size); |
| 940 | |
| 941 | skb_reset_mac_header(skb); |
| 942 | skb->network_header = skb->mac_header + ETH_HLEN; |
| 943 | skb->protocol = pkt.type; |
| 944 | skb->priority = TC_PRIO_CONTROL; |
| 945 | skb->dev = slave->dev; |
| 946 | |
Jiri Pirko | b4bef1b | 2014-11-19 14:04:57 +0100 | [diff] [blame] | 947 | if (vid) |
| 948 | __vlan_hwaccel_put_tag(skb, vlan_proto, vid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 950 | dev_queue_xmit(skb); |
| 951 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 953 | static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[], |
| 954 | bool strict_match) |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 955 | { |
| 956 | struct bonding *bond = bond_get_bond_by_slave(slave); |
Veaceslav Falico | 5bf94b8 | 2013-08-28 23:25:14 +0200 | [diff] [blame] | 957 | struct net_device *upper; |
| 958 | struct list_head *iter; |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 959 | struct bond_vlan_tag *tags; |
Veaceslav Falico | 7aa6498 | 2013-08-28 23:25:13 +0200 | [diff] [blame] | 960 | |
Veaceslav Falico | 5bf94b8 | 2013-08-28 23:25:14 +0200 | [diff] [blame] | 961 | /* send untagged */ |
Vlad Yasevich | d6b694c | 2014-05-21 11:24:39 -0400 | [diff] [blame] | 962 | alb_send_lp_vid(slave, mac_addr, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
Vlad Yasevich | 14af996 | 2014-06-04 16:23:38 -0400 | [diff] [blame] | 964 | /* loop through all devices and see if we need to send a packet |
| 965 | * for that device. |
| 966 | */ |
Veaceslav Falico | 5bf94b8 | 2013-08-28 23:25:14 +0200 | [diff] [blame] | 967 | rcu_read_lock(); |
Veaceslav Falico | 2f268f1 | 2013-09-25 09:20:07 +0200 | [diff] [blame] | 968 | netdev_for_each_all_upper_dev_rcu(bond->dev, upper, iter) { |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 969 | if (is_vlan_dev(upper) && vlan_get_encap_level(upper) == 0) { |
| 970 | if (strict_match && |
| 971 | ether_addr_equal_64bits(mac_addr, |
| 972 | upper->dev_addr)) { |
| 973 | alb_send_lp_vid(slave, mac_addr, |
| 974 | vlan_dev_vlan_proto(upper), |
| 975 | vlan_dev_vlan_id(upper)); |
| 976 | } else if (!strict_match) { |
| 977 | alb_send_lp_vid(slave, upper->dev_addr, |
| 978 | vlan_dev_vlan_proto(upper), |
| 979 | vlan_dev_vlan_id(upper)); |
| 980 | } |
| 981 | } |
Vlad Yasevich | 14af996 | 2014-06-04 16:23:38 -0400 | [diff] [blame] | 982 | |
| 983 | /* If this is a macvlan device, then only send updates |
| 984 | * when strict_match is turned off. |
| 985 | */ |
| 986 | if (netif_is_macvlan(upper) && !strict_match) { |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 987 | tags = bond_verify_device_path(bond->dev, upper, 0); |
| 988 | if (IS_ERR_OR_NULL(tags)) |
| 989 | BUG(); |
Vlad Yasevich | 14af996 | 2014-06-04 16:23:38 -0400 | [diff] [blame] | 990 | alb_send_lp_vid(slave, upper->dev_addr, |
| 991 | tags[0].vlan_proto, tags[0].vlan_id); |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 992 | kfree(tags); |
Vlad Yasevich | 14af996 | 2014-06-04 16:23:38 -0400 | [diff] [blame] | 993 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | } |
Veaceslav Falico | 5bf94b8 | 2013-08-28 23:25:14 +0200 | [diff] [blame] | 995 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | } |
| 997 | |
Jiri Bohac | b924551 | 2012-01-18 12:24:54 +0000 | [diff] [blame] | 998 | static int alb_set_slave_mac_addr(struct slave *slave, u8 addr[]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | { |
| 1000 | struct net_device *dev = slave->dev; |
| 1001 | struct sockaddr s_addr; |
| 1002 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1003 | if (BOND_MODE(slave->bond) == BOND_MODE_TLB) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | memcpy(dev->dev_addr, addr, dev->addr_len); |
| 1005 | return 0; |
| 1006 | } |
| 1007 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1008 | /* for rlb each slave must have a unique hw mac addresses so that |
| 1009 | * each slave will receive packets destined to a different mac |
| 1010 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | memcpy(s_addr.sa_data, addr, dev->addr_len); |
| 1012 | s_addr.sa_family = dev->type; |
| 1013 | if (dev_set_mac_address(dev, &s_addr)) { |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 1014 | netdev_err(slave->bond->dev, "dev_set_mac_address of dev %s failed! ALB mode requires that the base driver support setting the hw address also when the network device's interface is open\n", |
| 1015 | dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | return -EOPNOTSUPP; |
| 1017 | } |
| 1018 | return 0; |
| 1019 | } |
| 1020 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1021 | /* Swap MAC addresses between two slaves. |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1022 | * |
| 1023 | * Called with RTNL held, and no other locks. |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1024 | */ |
Veaceslav Falico | 43547ea | 2013-05-27 23:14:51 +0000 | [diff] [blame] | 1025 | static void alb_swap_mac_addr(struct slave *slave1, struct slave *slave2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | u8 tmp_mac_addr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1029 | ether_addr_copy(tmp_mac_addr, slave1->dev->dev_addr); |
Jiri Bohac | b924551 | 2012-01-18 12:24:54 +0000 | [diff] [blame] | 1030 | alb_set_slave_mac_addr(slave1, slave2->dev->dev_addr); |
| 1031 | alb_set_slave_mac_addr(slave2, tmp_mac_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1033 | } |
| 1034 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1035 | /* Send learning packets after MAC address swap. |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1036 | * |
Jay Vosburgh | 2543331 | 2008-01-17 16:24:59 -0800 | [diff] [blame] | 1037 | * Called with RTNL and no other locks |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1038 | */ |
| 1039 | static void alb_fasten_mac_swap(struct bonding *bond, struct slave *slave1, |
| 1040 | struct slave *slave2) |
| 1041 | { |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 1042 | int slaves_state_differ = (bond_slave_can_tx(slave1) != bond_slave_can_tx(slave2)); |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1043 | struct slave *disabled_slave = NULL; |
| 1044 | |
Jay Vosburgh | 2543331 | 2008-01-17 16:24:59 -0800 | [diff] [blame] | 1045 | ASSERT_RTNL(); |
| 1046 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | /* fasten the change in the switch */ |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 1048 | if (bond_slave_can_tx(slave1)) { |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1049 | alb_send_learning_packets(slave1, slave1->dev->dev_addr, false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | if (bond->alb_info.rlb_enabled) { |
| 1051 | /* inform the clients that the mac address |
| 1052 | * has changed |
| 1053 | */ |
| 1054 | rlb_req_update_slave_clients(bond, slave1); |
| 1055 | } |
| 1056 | } else { |
| 1057 | disabled_slave = slave1; |
| 1058 | } |
| 1059 | |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 1060 | if (bond_slave_can_tx(slave2)) { |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1061 | alb_send_learning_packets(slave2, slave2->dev->dev_addr, false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | if (bond->alb_info.rlb_enabled) { |
| 1063 | /* inform the clients that the mac address |
| 1064 | * has changed |
| 1065 | */ |
| 1066 | rlb_req_update_slave_clients(bond, slave2); |
| 1067 | } |
| 1068 | } else { |
| 1069 | disabled_slave = slave2; |
| 1070 | } |
| 1071 | |
| 1072 | if (bond->alb_info.rlb_enabled && slaves_state_differ) { |
| 1073 | /* A disabled slave was assigned an active mac addr */ |
| 1074 | rlb_teach_disabled_mac_on_primary(bond, |
| 1075 | disabled_slave->dev->dev_addr); |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | /** |
| 1080 | * alb_change_hw_addr_on_detach |
| 1081 | * @bond: bonding we're working on |
| 1082 | * @slave: the slave that was just detached |
| 1083 | * |
| 1084 | * We assume that @slave was already detached from the slave list. |
| 1085 | * |
| 1086 | * If @slave's permanent hw address is different both from its current |
| 1087 | * address and from @bond's address, then somewhere in the bond there's |
| 1088 | * a slave that has @slave's permanet address as its current address. |
| 1089 | * We'll make sure that that slave no longer uses @slave's permanent address. |
| 1090 | * |
Jay Vosburgh | 2543331 | 2008-01-17 16:24:59 -0800 | [diff] [blame] | 1091 | * Caller must hold RTNL and no other locks |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | */ |
| 1093 | static void alb_change_hw_addr_on_detach(struct bonding *bond, struct slave *slave) |
| 1094 | { |
| 1095 | int perm_curr_diff; |
| 1096 | int perm_bond_diff; |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1097 | struct slave *found_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 1099 | perm_curr_diff = !ether_addr_equal_64bits(slave->perm_hwaddr, |
| 1100 | slave->dev->dev_addr); |
| 1101 | perm_bond_diff = !ether_addr_equal_64bits(slave->perm_hwaddr, |
| 1102 | bond->dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | |
| 1104 | if (perm_curr_diff && perm_bond_diff) { |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1105 | found_slave = bond_slave_has_mac(bond, slave->perm_hwaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1107 | if (found_slave) { |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1108 | alb_swap_mac_addr(slave, found_slave); |
| 1109 | alb_fasten_mac_swap(bond, slave, found_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | } |
| 1111 | } |
| 1112 | } |
| 1113 | |
| 1114 | /** |
| 1115 | * alb_handle_addr_collision_on_attach |
| 1116 | * @bond: bonding we're working on |
| 1117 | * @slave: the slave that was just attached |
| 1118 | * |
| 1119 | * checks uniqueness of slave's mac address and handles the case the |
| 1120 | * new slave uses the bonds mac address. |
| 1121 | * |
| 1122 | * If the permanent hw address of @slave is @bond's hw address, we need to |
| 1123 | * find a different hw address to give @slave, that isn't in use by any other |
Peter Pan(潘卫平) | 77c8e2c | 2011-04-11 00:16:32 +0000 | [diff] [blame] | 1124 | * slave in the bond. This address must be, of course, one of the permanent |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | * addresses of the other slaves. |
| 1126 | * |
| 1127 | * We go over the slave list, and for each slave there we compare its |
| 1128 | * permanent hw address with the current address of all the other slaves. |
| 1129 | * If no match was found, then we've found a slave with a permanent address |
| 1130 | * that isn't used by any other slave in the bond, so we can assign it to |
| 1131 | * @slave. |
| 1132 | * |
| 1133 | * assumption: this function is called before @slave is attached to the |
Veaceslav Falico | cedb743 | 2013-06-17 19:30:35 +0200 | [diff] [blame] | 1134 | * bond slave list. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | */ |
| 1136 | static int alb_handle_addr_collision_on_attach(struct bonding *bond, struct slave *slave) |
| 1137 | { |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1138 | struct slave *has_bond_addr = rcu_access_pointer(bond->curr_active_slave); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1139 | struct slave *tmp_slave1, *free_mac_slave = NULL; |
| 1140 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1142 | if (!bond_has_slaves(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | /* this is the first slave */ |
| 1144 | return 0; |
| 1145 | } |
| 1146 | |
| 1147 | /* if slave's mac address differs from bond's mac address |
| 1148 | * check uniqueness of slave's mac address against the other |
| 1149 | * slaves in the bond. |
| 1150 | */ |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 1151 | if (!ether_addr_equal_64bits(slave->perm_hwaddr, bond->dev->dev_addr)) { |
Veaceslav Falico | cedb743 | 2013-06-17 19:30:35 +0200 | [diff] [blame] | 1152 | if (!bond_slave_has_mac(bond, slave->dev->dev_addr)) |
John W. Linville | 6b38aef | 2005-07-28 15:00:15 -0400 | [diff] [blame] | 1153 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | |
John W. Linville | 6b38aef | 2005-07-28 15:00:15 -0400 | [diff] [blame] | 1155 | /* Try setting slave mac to bond address and fall-through |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1156 | * to code handling that situation below... |
| 1157 | */ |
Jiri Bohac | b924551 | 2012-01-18 12:24:54 +0000 | [diff] [blame] | 1158 | alb_set_slave_mac_addr(slave, bond->dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | } |
| 1160 | |
| 1161 | /* The slave's address is equal to the address of the bond. |
| 1162 | * Search for a spare address in the bond for this slave. |
| 1163 | */ |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1164 | bond_for_each_slave(bond, tmp_slave1, iter) { |
Veaceslav Falico | cedb743 | 2013-06-17 19:30:35 +0200 | [diff] [blame] | 1165 | if (!bond_slave_has_mac(bond, tmp_slave1->perm_hwaddr)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | /* no slave has tmp_slave1's perm addr |
| 1167 | * as its curr addr |
| 1168 | */ |
| 1169 | free_mac_slave = tmp_slave1; |
| 1170 | break; |
| 1171 | } |
| 1172 | |
| 1173 | if (!has_bond_addr) { |
Joe Perches | a6700db | 2012-05-09 17:04:04 +0000 | [diff] [blame] | 1174 | if (ether_addr_equal_64bits(tmp_slave1->dev->dev_addr, |
| 1175 | bond->dev->dev_addr)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | |
| 1177 | has_bond_addr = tmp_slave1; |
| 1178 | } |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | if (free_mac_slave) { |
Jiri Bohac | b924551 | 2012-01-18 12:24:54 +0000 | [diff] [blame] | 1183 | alb_set_slave_mac_addr(slave, free_mac_slave->perm_hwaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 1185 | netdev_warn(bond->dev, "the hw address of slave %s is in use by the bond; giving it the hw address of %s\n", |
| 1186 | slave->dev->name, free_mac_slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | |
| 1188 | } else if (has_bond_addr) { |
Veaceslav Falico | 0a111a0 | 2014-07-15 19:36:02 +0200 | [diff] [blame] | 1189 | netdev_err(bond->dev, "the hw address of slave %s is in use by the bond; couldn't find a slave with a free hw address to give it (this should not have happened)\n", |
| 1190 | slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | return -EFAULT; |
| 1192 | } |
| 1193 | |
| 1194 | return 0; |
| 1195 | } |
| 1196 | |
| 1197 | /** |
| 1198 | * alb_set_mac_address |
| 1199 | * @bond: |
| 1200 | * @addr: |
| 1201 | * |
| 1202 | * In TLB mode all slaves are configured to the bond's hw address, but set |
| 1203 | * their dev_addr field to different addresses (based on their permanent hw |
| 1204 | * addresses). |
| 1205 | * |
| 1206 | * For each slave, this function sets the interface to the new address and then |
| 1207 | * changes its dev_addr field to its previous value. |
| 1208 | * |
| 1209 | * Unwinding assumes bond's mac address has not yet changed. |
| 1210 | */ |
| 1211 | static int alb_set_mac_address(struct bonding *bond, void *addr) |
| 1212 | { |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 1213 | struct slave *slave, *rollback_slave; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1214 | struct list_head *iter; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 1215 | struct sockaddr sa; |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 1216 | char tmp_addr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | int res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 1219 | if (bond->alb_info.rlb_enabled) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1222 | bond_for_each_slave(bond, slave, iter) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | /* save net_device's current hw address */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1224 | ether_addr_copy(tmp_addr, slave->dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | |
| 1226 | res = dev_set_mac_address(slave->dev, addr); |
| 1227 | |
| 1228 | /* restore net_device's hw address */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1229 | ether_addr_copy(slave->dev->dev_addr, tmp_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 1231 | if (res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | goto unwind; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | return 0; |
| 1236 | |
| 1237 | unwind: |
| 1238 | memcpy(sa.sa_data, bond->dev->dev_addr, bond->dev->addr_len); |
| 1239 | sa.sa_family = bond->dev->type; |
| 1240 | |
| 1241 | /* unwind from head to the slave that failed */ |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1242 | bond_for_each_slave(bond, rollback_slave, iter) { |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 1243 | if (rollback_slave == slave) |
| 1244 | break; |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1245 | ether_addr_copy(tmp_addr, rollback_slave->dev->dev_addr); |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 1246 | dev_set_mac_address(rollback_slave->dev, &sa); |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1247 | ether_addr_copy(rollback_slave->dev->dev_addr, tmp_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | return res; |
| 1251 | } |
| 1252 | |
| 1253 | /************************ exported alb funcions ************************/ |
| 1254 | |
| 1255 | int bond_alb_initialize(struct bonding *bond, int rlb_enabled) |
| 1256 | { |
| 1257 | int res; |
| 1258 | |
| 1259 | res = tlb_initialize(bond); |
Wang Yufen | 35d75ee | 2014-02-14 17:15:15 +0800 | [diff] [blame] | 1260 | if (res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | |
| 1263 | if (rlb_enabled) { |
| 1264 | bond->alb_info.rlb_enabled = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | res = rlb_initialize(bond); |
| 1266 | if (res) { |
| 1267 | tlb_deinitialize(bond); |
| 1268 | return res; |
| 1269 | } |
Mitch Williams | b76850a | 2005-11-09 10:35:35 -0800 | [diff] [blame] | 1270 | } else { |
| 1271 | bond->alb_info.rlb_enabled = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | } |
| 1273 | |
| 1274 | return 0; |
| 1275 | } |
| 1276 | |
| 1277 | void bond_alb_deinitialize(struct bonding *bond) |
| 1278 | { |
| 1279 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 1280 | |
| 1281 | tlb_deinitialize(bond); |
| 1282 | |
Wang Yufen | dda0fd5 | 2014-02-14 17:15:16 +0800 | [diff] [blame] | 1283 | if (bond_info->rlb_enabled) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | rlb_deinitialize(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | } |
| 1286 | |
Mahesh Bandewar | 9a49aba | 2014-04-22 16:30:18 -0700 | [diff] [blame] | 1287 | static int bond_do_alb_xmit(struct sk_buff *skb, struct bonding *bond, |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1288 | struct slave *tx_slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
Mahesh Bandewar | 9a49aba | 2014-04-22 16:30:18 -0700 | [diff] [blame] | 1291 | struct ethhdr *eth_data = eth_hdr(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | |
| 1293 | if (!tx_slave) { |
| 1294 | /* unbalanced or unassigned, send through primary */ |
dingtianhong | 28c7192 | 2013-10-15 16:28:39 +0800 | [diff] [blame] | 1295 | tx_slave = rcu_dereference(bond->curr_active_slave); |
Mahesh Bandewar | e9f0fb8 | 2014-04-22 16:30:22 -0700 | [diff] [blame] | 1296 | if (bond->params.tlb_dynamic_lb) |
| 1297 | bond_info->unbalanced_load += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | } |
| 1299 | |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 1300 | if (tx_slave && bond_slave_can_tx(tx_slave)) { |
Andreea-Cristina Bernat | b5091b5 | 2014-08-17 13:21:45 +0300 | [diff] [blame] | 1301 | if (tx_slave != rcu_access_pointer(bond->curr_active_slave)) { |
Joe Perches | 2a7c183 | 2014-02-18 09:42:45 -0800 | [diff] [blame] | 1302 | ether_addr_copy(eth_data->h_source, |
| 1303 | tx_slave->dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | } |
| 1305 | |
dingtianhong | 4d4ac1b | 2014-01-02 09:13:02 +0800 | [diff] [blame] | 1306 | bond_dev_queue_xmit(bond, skb, tx_slave->dev); |
| 1307 | goto out; |
Joe Perches | 157550fb | 2014-02-18 09:42:46 -0800 | [diff] [blame] | 1308 | } |
| 1309 | |
Mahesh Bandewar | e9f0fb8 | 2014-04-22 16:30:22 -0700 | [diff] [blame] | 1310 | if (tx_slave && bond->params.tlb_dynamic_lb) { |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 1311 | spin_lock(&bond->mode_lock); |
Joe Perches | 157550fb | 2014-02-18 09:42:46 -0800 | [diff] [blame] | 1312 | __tlb_clear_slave(bond, tx_slave, 0); |
Nikolay Aleksandrov | 4bab16d | 2014-09-11 22:49:26 +0200 | [diff] [blame] | 1313 | spin_unlock(&bond->mode_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | } |
| 1315 | |
dingtianhong | 4d4ac1b | 2014-01-02 09:13:02 +0800 | [diff] [blame] | 1316 | /* no suitable interface, frame not sent */ |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 1317 | bond_tx_drop(bond->dev, skb); |
dingtianhong | 4d4ac1b | 2014-01-02 09:13:02 +0800 | [diff] [blame] | 1318 | out: |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 1319 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | } |
| 1321 | |
Mahesh Bandewar | f05b42e | 2014-04-22 16:30:20 -0700 | [diff] [blame] | 1322 | int bond_tlb_xmit(struct sk_buff *skb, struct net_device *bond_dev) |
| 1323 | { |
| 1324 | struct bonding *bond = netdev_priv(bond_dev); |
| 1325 | struct ethhdr *eth_data; |
| 1326 | struct slave *tx_slave = NULL; |
| 1327 | u32 hash_index; |
| 1328 | |
| 1329 | skb_reset_mac_header(skb); |
| 1330 | eth_data = eth_hdr(skb); |
| 1331 | |
| 1332 | /* Do not TX balance any multicast or broadcast */ |
| 1333 | if (!is_multicast_ether_addr(eth_data->h_dest)) { |
| 1334 | switch (skb->protocol) { |
| 1335 | case htons(ETH_P_IP): |
| 1336 | case htons(ETH_P_IPX): |
| 1337 | /* In case of IPX, it will falback to L2 hash */ |
| 1338 | case htons(ETH_P_IPV6): |
| 1339 | hash_index = bond_xmit_hash(bond, skb); |
Mahesh Bandewar | e9f0fb8 | 2014-04-22 16:30:22 -0700 | [diff] [blame] | 1340 | if (bond->params.tlb_dynamic_lb) { |
| 1341 | tx_slave = tlb_choose_channel(bond, |
| 1342 | hash_index & 0xFF, |
| 1343 | skb->len); |
| 1344 | } else { |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 1345 | struct bond_up_slave *slaves; |
| 1346 | unsigned int count; |
Mahesh Bandewar | e9f0fb8 | 2014-04-22 16:30:22 -0700 | [diff] [blame] | 1347 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 1348 | slaves = rcu_dereference(bond->slave_arr); |
| 1349 | count = slaves ? ACCESS_ONCE(slaves->count) : 0; |
| 1350 | if (likely(count)) |
Mahesh Bandewar | 6b794c1 | 2014-07-16 11:10:36 -0700 | [diff] [blame] | 1351 | tx_slave = slaves->arr[hash_index % |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 1352 | count]; |
Mahesh Bandewar | e9f0fb8 | 2014-04-22 16:30:22 -0700 | [diff] [blame] | 1353 | } |
Mahesh Bandewar | f05b42e | 2014-04-22 16:30:20 -0700 | [diff] [blame] | 1354 | break; |
| 1355 | } |
| 1356 | } |
Mahesh Bandewar | f05b42e | 2014-04-22 16:30:20 -0700 | [diff] [blame] | 1357 | return bond_do_alb_xmit(skb, bond, tx_slave); |
| 1358 | } |
| 1359 | |
Mahesh Bandewar | 9a49aba | 2014-04-22 16:30:18 -0700 | [diff] [blame] | 1360 | int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) |
| 1361 | { |
| 1362 | struct bonding *bond = netdev_priv(bond_dev); |
| 1363 | struct ethhdr *eth_data; |
| 1364 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 1365 | struct slave *tx_slave = NULL; |
| 1366 | static const __be32 ip_bcast = htonl(0xffffffff); |
| 1367 | int hash_size = 0; |
| 1368 | bool do_tx_balance = true; |
| 1369 | u32 hash_index = 0; |
| 1370 | const u8 *hash_start = NULL; |
| 1371 | struct ipv6hdr *ip6hdr; |
| 1372 | |
| 1373 | skb_reset_mac_header(skb); |
| 1374 | eth_data = eth_hdr(skb); |
| 1375 | |
| 1376 | switch (ntohs(skb->protocol)) { |
| 1377 | case ETH_P_IP: { |
| 1378 | const struct iphdr *iph = ip_hdr(skb); |
| 1379 | |
| 1380 | if (ether_addr_equal_64bits(eth_data->h_dest, mac_bcast) || |
| 1381 | (iph->daddr == ip_bcast) || |
| 1382 | (iph->protocol == IPPROTO_IGMP)) { |
| 1383 | do_tx_balance = false; |
| 1384 | break; |
| 1385 | } |
| 1386 | hash_start = (char *)&(iph->daddr); |
| 1387 | hash_size = sizeof(iph->daddr); |
| 1388 | } |
| 1389 | break; |
| 1390 | case ETH_P_IPV6: |
| 1391 | /* IPv6 doesn't really use broadcast mac address, but leave |
| 1392 | * that here just in case. |
| 1393 | */ |
| 1394 | if (ether_addr_equal_64bits(eth_data->h_dest, mac_bcast)) { |
| 1395 | do_tx_balance = false; |
| 1396 | break; |
| 1397 | } |
| 1398 | |
| 1399 | /* IPv6 uses all-nodes multicast as an equivalent to |
| 1400 | * broadcasts in IPv4. |
| 1401 | */ |
| 1402 | if (ether_addr_equal_64bits(eth_data->h_dest, mac_v6_allmcast)) { |
| 1403 | do_tx_balance = false; |
| 1404 | break; |
| 1405 | } |
| 1406 | |
| 1407 | /* Additianally, DAD probes should not be tx-balanced as that |
| 1408 | * will lead to false positives for duplicate addresses and |
| 1409 | * prevent address configuration from working. |
| 1410 | */ |
| 1411 | ip6hdr = ipv6_hdr(skb); |
| 1412 | if (ipv6_addr_any(&ip6hdr->saddr)) { |
| 1413 | do_tx_balance = false; |
| 1414 | break; |
| 1415 | } |
| 1416 | |
| 1417 | hash_start = (char *)&(ipv6_hdr(skb)->daddr); |
| 1418 | hash_size = sizeof(ipv6_hdr(skb)->daddr); |
| 1419 | break; |
| 1420 | case ETH_P_IPX: |
| 1421 | if (ipx_hdr(skb)->ipx_checksum != IPX_NO_CHECKSUM) { |
| 1422 | /* something is wrong with this packet */ |
| 1423 | do_tx_balance = false; |
| 1424 | break; |
| 1425 | } |
| 1426 | |
| 1427 | if (ipx_hdr(skb)->ipx_type != IPX_TYPE_NCP) { |
| 1428 | /* The only protocol worth balancing in |
| 1429 | * this family since it has an "ARP" like |
| 1430 | * mechanism |
| 1431 | */ |
| 1432 | do_tx_balance = false; |
| 1433 | break; |
| 1434 | } |
| 1435 | |
| 1436 | hash_start = (char *)eth_data->h_dest; |
| 1437 | hash_size = ETH_ALEN; |
| 1438 | break; |
| 1439 | case ETH_P_ARP: |
| 1440 | do_tx_balance = false; |
| 1441 | if (bond_info->rlb_enabled) |
| 1442 | tx_slave = rlb_arp_xmit(skb, bond); |
| 1443 | break; |
| 1444 | default: |
| 1445 | do_tx_balance = false; |
| 1446 | break; |
| 1447 | } |
| 1448 | |
| 1449 | if (do_tx_balance) { |
| 1450 | hash_index = _simple_hash(hash_start, hash_size); |
| 1451 | tx_slave = tlb_choose_channel(bond, hash_index, skb->len); |
| 1452 | } |
| 1453 | |
| 1454 | return bond_do_alb_xmit(skb, bond, tx_slave); |
| 1455 | } |
| 1456 | |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 1457 | void bond_alb_monitor(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | { |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 1459 | struct bonding *bond = container_of(work, struct bonding, |
| 1460 | alb_work.work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1462 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1465 | if (!bond_has_slaves(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | bond_info->tx_rebalance_counter = 0; |
| 1467 | bond_info->lp_counter = 0; |
| 1468 | goto re_arm; |
| 1469 | } |
| 1470 | |
dingtianhong | 733ab63 | 2013-12-13 10:19:45 +0800 | [diff] [blame] | 1471 | rcu_read_lock(); |
| 1472 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | bond_info->tx_rebalance_counter++; |
| 1474 | bond_info->lp_counter++; |
| 1475 | |
| 1476 | /* send learning packets */ |
Neil Horman | 7eacd03 | 2013-09-13 11:05:33 -0400 | [diff] [blame] | 1477 | if (bond_info->lp_counter >= BOND_ALB_LP_TICKS(bond)) { |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1478 | bool strict_match; |
| 1479 | |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1480 | bond_for_each_slave_rcu(bond, slave, iter) { |
| 1481 | /* If updating current_active, use all currently |
| 1482 | * user mac addreses (!strict_match). Otherwise, only |
| 1483 | * use mac of the slave device. |
Vlad Yasevich | 14af996 | 2014-06-04 16:23:38 -0400 | [diff] [blame] | 1484 | * In RLB mode, we always use strict matches. |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1485 | */ |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1486 | strict_match = (slave != rcu_access_pointer(bond->curr_active_slave) || |
Vlad Yasevich | 14af996 | 2014-06-04 16:23:38 -0400 | [diff] [blame] | 1487 | bond_info->rlb_enabled); |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1488 | alb_send_learning_packets(slave, slave->dev->dev_addr, |
| 1489 | strict_match); |
| 1490 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | bond_info->lp_counter = 0; |
| 1492 | } |
| 1493 | |
| 1494 | /* rebalance tx traffic */ |
| 1495 | if (bond_info->tx_rebalance_counter >= BOND_TLB_REBALANCE_TICKS) { |
dingtianhong | 733ab63 | 2013-12-13 10:19:45 +0800 | [diff] [blame] | 1496 | bond_for_each_slave_rcu(bond, slave, iter) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | tlb_clear_slave(bond, slave, 1); |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1498 | if (slave == rcu_access_pointer(bond->curr_active_slave)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | SLAVE_TLB_INFO(slave).load = |
| 1500 | bond_info->unbalanced_load / |
| 1501 | BOND_TLB_REBALANCE_INTERVAL; |
| 1502 | bond_info->unbalanced_load = 0; |
| 1503 | } |
| 1504 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | bond_info->tx_rebalance_counter = 0; |
| 1506 | } |
| 1507 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | if (bond_info->rlb_enabled) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | if (bond_info->primary_is_promisc && |
| 1510 | (++bond_info->rlb_promisc_timeout_counter >= RLB_PROMISC_TIMEOUT)) { |
| 1511 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1512 | /* dev_set_promiscuity requires rtnl and |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 1513 | * nothing else. Avoid race with bond_close. |
| 1514 | */ |
dingtianhong | 733ab63 | 2013-12-13 10:19:45 +0800 | [diff] [blame] | 1515 | rcu_read_unlock(); |
| 1516 | if (!rtnl_trylock()) |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 1517 | goto re_arm; |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 1518 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | bond_info->rlb_promisc_timeout_counter = 0; |
| 1520 | |
| 1521 | /* If the primary was set to promiscuous mode |
| 1522 | * because a slave was disabled then |
| 1523 | * it can now leave promiscuous mode. |
| 1524 | */ |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1525 | dev_set_promiscuity(rtnl_dereference(bond->curr_active_slave)->dev, |
| 1526 | -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | bond_info->primary_is_promisc = 0; |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 1528 | |
| 1529 | rtnl_unlock(); |
dingtianhong | 733ab63 | 2013-12-13 10:19:45 +0800 | [diff] [blame] | 1530 | rcu_read_lock(); |
Jay Vosburgh | d0e81b7 | 2007-10-17 17:37:51 -0700 | [diff] [blame] | 1531 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | |
| 1533 | if (bond_info->rlb_rebalance) { |
| 1534 | bond_info->rlb_rebalance = 0; |
| 1535 | rlb_rebalance(bond); |
| 1536 | } |
| 1537 | |
| 1538 | /* check if clients need updating */ |
| 1539 | if (bond_info->rx_ntt) { |
| 1540 | if (bond_info->rlb_update_delay_counter) { |
| 1541 | --bond_info->rlb_update_delay_counter; |
| 1542 | } else { |
| 1543 | rlb_update_rx_clients(bond); |
Wang Yufen | dda0fd5 | 2014-02-14 17:15:16 +0800 | [diff] [blame] | 1544 | if (bond_info->rlb_update_retry_counter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | --bond_info->rlb_update_retry_counter; |
Wang Yufen | dda0fd5 | 2014-02-14 17:15:16 +0800 | [diff] [blame] | 1546 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | bond_info->rx_ntt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | } |
| 1549 | } |
| 1550 | } |
dingtianhong | 733ab63 | 2013-12-13 10:19:45 +0800 | [diff] [blame] | 1551 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | re_arm: |
Jay Vosburgh | e6d265e | 2011-10-28 15:42:50 +0000 | [diff] [blame] | 1553 | queue_delayed_work(bond->wq, &bond->alb_work, alb_delta_in_ticks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | } |
| 1555 | |
| 1556 | /* assumption: called before the slave is attached to the bond |
| 1557 | * and not locked by the bond lock |
| 1558 | */ |
| 1559 | int bond_alb_init_slave(struct bonding *bond, struct slave *slave) |
| 1560 | { |
| 1561 | int res; |
| 1562 | |
Jiri Bohac | b924551 | 2012-01-18 12:24:54 +0000 | [diff] [blame] | 1563 | res = alb_set_slave_mac_addr(slave, slave->perm_hwaddr); |
Wang Yufen | dda0fd5 | 2014-02-14 17:15:16 +0800 | [diff] [blame] | 1564 | if (res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | res = alb_handle_addr_collision_on_attach(bond, slave); |
Wang Yufen | dda0fd5 | 2014-02-14 17:15:16 +0800 | [diff] [blame] | 1568 | if (res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | |
| 1571 | tlb_init_slave(slave); |
| 1572 | |
| 1573 | /* order a rebalance ASAP */ |
| 1574 | bond->alb_info.tx_rebalance_counter = BOND_TLB_REBALANCE_TICKS; |
| 1575 | |
Wang Yufen | dda0fd5 | 2014-02-14 17:15:16 +0800 | [diff] [blame] | 1576 | if (bond->alb_info.rlb_enabled) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | bond->alb_info.rlb_rebalance = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | |
| 1579 | return 0; |
| 1580 | } |
| 1581 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1582 | /* Remove slave from tlb and rlb hash tables, and fix up MAC addresses |
Jay Vosburgh | 2543331 | 2008-01-17 16:24:59 -0800 | [diff] [blame] | 1583 | * if necessary. |
| 1584 | * |
| 1585 | * Caller must hold RTNL and no other locks |
| 1586 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave) |
| 1588 | { |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1589 | if (bond_has_slaves(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | alb_change_hw_addr_on_detach(bond, slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | |
| 1592 | tlb_clear_slave(bond, slave, 0); |
| 1593 | |
| 1594 | if (bond->alb_info.rlb_enabled) { |
Veaceslav Falico | 6475ae4 | 2013-09-25 09:20:17 +0200 | [diff] [blame] | 1595 | bond->alb_info.rx_slave = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1596 | rlb_clear_slave(bond, slave); |
| 1597 | } |
Mahesh Bandewar | 6b794c1 | 2014-07-16 11:10:36 -0700 | [diff] [blame] | 1598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | } |
| 1600 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link) |
| 1602 | { |
| 1603 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); |
| 1604 | |
| 1605 | if (link == BOND_LINK_DOWN) { |
| 1606 | tlb_clear_slave(bond, slave, 0); |
Wang Yufen | 73ac0cd | 2014-02-14 17:15:17 +0800 | [diff] [blame] | 1607 | if (bond->alb_info.rlb_enabled) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | rlb_clear_slave(bond, slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | } else if (link == BOND_LINK_UP) { |
| 1610 | /* order a rebalance ASAP */ |
| 1611 | bond_info->tx_rebalance_counter = BOND_TLB_REBALANCE_TICKS; |
| 1612 | if (bond->alb_info.rlb_enabled) { |
| 1613 | bond->alb_info.rlb_rebalance = 1; |
| 1614 | /* If the updelay module parameter is smaller than the |
| 1615 | * forwarding delay of the switch the rebalance will |
| 1616 | * not work because the rebalance arp replies will |
| 1617 | * not be forwarded to the clients.. |
| 1618 | */ |
| 1619 | } |
| 1620 | } |
Mahesh Bandewar | 6b794c1 | 2014-07-16 11:10:36 -0700 | [diff] [blame] | 1621 | |
| 1622 | if (bond_is_nondyn_tlb(bond)) { |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 1623 | if (bond_update_slave_arr(bond, NULL)) |
Mahesh Bandewar | 6b794c1 | 2014-07-16 11:10:36 -0700 | [diff] [blame] | 1624 | pr_err("Failed to build slave-array for TLB mode.\n"); |
| 1625 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | } |
| 1627 | |
| 1628 | /** |
| 1629 | * bond_alb_handle_active_change - assign new curr_active_slave |
| 1630 | * @bond: our bonding struct |
| 1631 | * @new_slave: new slave to assign |
| 1632 | * |
| 1633 | * Set the bond->curr_active_slave to @new_slave and handle |
| 1634 | * mac address swapping and promiscuity changes as needed. |
| 1635 | * |
Nikolay Aleksandrov | 62c5f51 | 2014-09-11 22:49:23 +0200 | [diff] [blame] | 1636 | * Caller must hold RTNL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | */ |
| 1638 | void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave) |
| 1639 | { |
| 1640 | struct slave *swap_slave; |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1641 | struct slave *curr_active; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | |
Nikolay Aleksandrov | 62c5f51 | 2014-09-11 22:49:23 +0200 | [diff] [blame] | 1643 | curr_active = rtnl_dereference(bond->curr_active_slave); |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1644 | if (curr_active == new_slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1646 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1647 | if (curr_active && bond->alb_info.primary_is_promisc) { |
| 1648 | dev_set_promiscuity(curr_active->dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | bond->alb_info.primary_is_promisc = 0; |
| 1650 | bond->alb_info.rlb_promisc_timeout_counter = 0; |
| 1651 | } |
| 1652 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1653 | swap_slave = curr_active; |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 1654 | rcu_assign_pointer(bond->curr_active_slave, new_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1656 | if (!new_slave || !bond_has_slaves(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | |
| 1659 | /* set the new curr_active_slave to the bonds mac address |
| 1660 | * i.e. swap mac addresses of old curr_active_slave and new curr_active_slave |
| 1661 | */ |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1662 | if (!swap_slave) |
| 1663 | swap_slave = bond_slave_has_mac(bond, bond->dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1665 | /* Arrange for swap_slave and new_slave to temporarily be |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1666 | * ignored so we can mess with their MAC addresses without |
| 1667 | * fear of interference from transmit activity. |
| 1668 | */ |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 1669 | if (swap_slave) |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1670 | tlb_clear_slave(bond, swap_slave, 1); |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1671 | tlb_clear_slave(bond, new_slave, 1); |
| 1672 | |
Veaceslav Falico | 4996b90 | 2013-10-07 09:17:20 +0200 | [diff] [blame] | 1673 | /* in TLB mode, the slave might flip down/up with the old dev_addr, |
| 1674 | * and thus filter bond->dev_addr's packets, so force bond's mac |
| 1675 | */ |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1676 | if (BOND_MODE(bond) == BOND_MODE_TLB) { |
Veaceslav Falico | 4996b90 | 2013-10-07 09:17:20 +0200 | [diff] [blame] | 1677 | struct sockaddr sa; |
| 1678 | u8 tmp_addr[ETH_ALEN]; |
| 1679 | |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1680 | ether_addr_copy(tmp_addr, new_slave->dev->dev_addr); |
Veaceslav Falico | 4996b90 | 2013-10-07 09:17:20 +0200 | [diff] [blame] | 1681 | |
| 1682 | memcpy(sa.sa_data, bond->dev->dev_addr, bond->dev->addr_len); |
| 1683 | sa.sa_family = bond->dev->type; |
| 1684 | /* we don't care if it can't change its mac, best effort */ |
| 1685 | dev_set_mac_address(new_slave->dev, &sa); |
| 1686 | |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1687 | ether_addr_copy(new_slave->dev->dev_addr, tmp_addr); |
Veaceslav Falico | 4996b90 | 2013-10-07 09:17:20 +0200 | [diff] [blame] | 1688 | } |
| 1689 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | /* curr_active_slave must be set before calling alb_swap_mac_addr */ |
| 1691 | if (swap_slave) { |
| 1692 | /* swap mac address */ |
Veaceslav Falico | 43547ea | 2013-05-27 23:14:51 +0000 | [diff] [blame] | 1693 | alb_swap_mac_addr(swap_slave, new_slave); |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1694 | alb_fasten_mac_swap(bond, swap_slave, new_slave); |
| 1695 | } else { |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1696 | /* set the new_slave to the bond mac address */ |
| 1697 | alb_set_slave_mac_addr(new_slave, bond->dev->dev_addr); |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1698 | alb_send_learning_packets(new_slave, bond->dev->dev_addr, |
| 1699 | false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | } |
| 1701 | } |
| 1702 | |
Nikolay Aleksandrov | ecfede4 | 2014-09-09 23:16:59 +0200 | [diff] [blame] | 1703 | /* Called with RTNL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr) |
| 1705 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1706 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | struct sockaddr *sa = addr; |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1708 | struct slave *curr_active; |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1709 | struct slave *swap_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | int res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | |
Wang Yufen | 73ac0cd | 2014-02-14 17:15:17 +0800 | [diff] [blame] | 1712 | if (!is_valid_ether_addr(sa->sa_data)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | return -EADDRNOTAVAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | |
| 1715 | res = alb_set_mac_address(bond, addr); |
Wang Yufen | 73ac0cd | 2014-02-14 17:15:17 +0800 | [diff] [blame] | 1716 | if (res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | |
| 1719 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); |
| 1720 | |
| 1721 | /* If there is no curr_active_slave there is nothing else to do. |
| 1722 | * Otherwise we'll need to pass the new address to it and handle |
| 1723 | * duplications. |
| 1724 | */ |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1725 | curr_active = rtnl_dereference(bond->curr_active_slave); |
| 1726 | if (!curr_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | |
Veaceslav Falico | b88ec38 | 2013-06-18 13:44:52 +0200 | [diff] [blame] | 1729 | swap_slave = bond_slave_has_mac(bond, bond_dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | |
| 1731 | if (swap_slave) { |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1732 | alb_swap_mac_addr(swap_slave, curr_active); |
| 1733 | alb_fasten_mac_swap(bond, swap_slave, curr_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | } else { |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1735 | alb_set_slave_mac_addr(curr_active, bond_dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1736 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1737 | alb_send_learning_packets(curr_active, |
Vlad Yasevich | d0c21d4 | 2014-05-21 13:19:48 -0400 | [diff] [blame] | 1738 | bond_dev->dev_addr, false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | if (bond->alb_info.rlb_enabled) { |
| 1740 | /* inform clients mac address has changed */ |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1741 | rlb_req_update_slave_clients(bond, curr_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | } |
| 1743 | } |
| 1744 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | return 0; |
| 1746 | } |
| 1747 | |
| 1748 | void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id) |
| 1749 | { |
Wang Yufen | 73ac0cd | 2014-02-14 17:15:17 +0800 | [diff] [blame] | 1750 | if (bond->alb_info.rlb_enabled) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | rlb_clear_vlan(bond, vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | } |
| 1753 | |