11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify it 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * under the terms of the GNU General Public License as published by the 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Free Software Foundation; either version 2 of the License, or 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, but 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for more details. 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License along 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with this program; if not, write to the Free Software Foundation, Inc., 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The full GNU General Public License is included in this distribution in the 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * file called LICENSE. 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 24a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/skbuff.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/netdevice.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/etherdevice.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pkt_sched.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/spinlock.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ip.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ipv6.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/if_arp.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/if_ether.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/if_bonding.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/if_vlan.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/in.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/ipx.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/arp.h> 412d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich#include <net/ipv6.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "bonding.h" 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "bond_alb.h" 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48885a136c52a8871175477baf3903e1c38751b35aEric Dumazet#ifndef __long_aligned 49885a136c52a8871175477baf3903e1c38751b35aEric Dumazet#define __long_aligned __attribute__((aligned((sizeof(long))))) 50885a136c52a8871175477baf3903e1c38751b35aEric Dumazet#endif 51885a136c52a8871175477baf3903e1c38751b35aEric Dumazetstatic const u8 mac_bcast[ETH_ALEN] __long_aligned = { 52885a136c52a8871175477baf3903e1c38751b35aEric Dumazet 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 53885a136c52a8871175477baf3903e1c38751b35aEric Dumazet}; 54885a136c52a8871175477baf3903e1c38751b35aEric Dumazetstatic const u8 mac_v6_allmcast[ETH_ALEN] __long_aligned = { 55885a136c52a8871175477baf3903e1c38751b35aEric Dumazet 0x33, 0x33, 0x00, 0x00, 0x00, 0x01 56885a136c52a8871175477baf3903e1c38751b35aEric Dumazet}; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const int alb_delta_in_ticks = HZ / ALB_TIMER_TICKS_PER_SEC; 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#pragma pack(1) 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct learning_pkt { 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 mac_dst[ETH_ALEN]; 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 mac_src[ETH_ALEN]; 63d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro __be16 type; 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 padding[ETH_ZLEN - ETH_HLEN]; 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct arp_pkt { 68d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro __be16 hw_addr_space; 69d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro __be16 prot_addr_space; 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 hw_addr_len; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 prot_addr_len; 72d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro __be16 op_code; 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 mac_src[ETH_ALEN]; /* sender hardware address */ 74d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro __be32 ip_src; /* sender IP address */ 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 mac_dst[ETH_ALEN]; /* target hardware address */ 76d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro __be32 ip_dst; /* target IP address */ 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#pragma pack() 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 80a16aeb36239ce612699ed64a75a03c88cbc657e8Arnaldo Carvalho de Melostatic inline struct arp_pkt *arp_pkt(const struct sk_buff *skb) 81a16aeb36239ce612699ed64a75a03c88cbc657e8Arnaldo Carvalho de Melo{ 82d56f90a7c96da5187f0cdf07ee7434fe6aa78bbcArnaldo Carvalho de Melo return (struct arp_pkt *)skb_network_header(skb); 83a16aeb36239ce612699ed64a75a03c88cbc657e8Arnaldo Carvalho de Melo} 84a16aeb36239ce612699ed64a75a03c88cbc657e8Arnaldo Carvalho de Melo 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Forward declaration */ 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]); 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 88eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melostatic inline u8 _simple_hash(const u8 *hash_start, int hash_size) 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 hash = 0; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < hash_size; i++) { 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash ^= hash_start[i]; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return hash; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*********************** tlb specific functions ***************************/ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 102f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _lock_tx_hashtbl_bh(struct bonding *bond) 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1046603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh spin_lock_bh(&(BOND_ALB_INFO(bond).tx_hashtbl_lock)); 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 107f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _unlock_tx_hashtbl_bh(struct bonding *bond) 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1096603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh spin_unlock_bh(&(BOND_ALB_INFO(bond).tx_hashtbl_lock)); 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 112f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _lock_tx_hashtbl(struct bonding *bond) 113f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov{ 114f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov spin_lock(&(BOND_ALB_INFO(bond).tx_hashtbl_lock)); 115f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov} 116f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov 117f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _unlock_tx_hashtbl(struct bonding *bond) 118f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov{ 119f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov spin_unlock(&(BOND_ALB_INFO(bond).tx_hashtbl_lock)); 120f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov} 121f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Caller must hold tx_hashtbl lock */ 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void tlb_init_table_entry(struct tlb_client_info *entry, int save_load) 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (save_load) { 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->load_history = 1 + entry->tx_bytes / 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BOND_TLB_REBALANCE_INTERVAL; 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->tx_bytes = 0; 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->tx_slave = NULL; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->next = TLB_NULL_INDEX; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->prev = TLB_NULL_INDEX; 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void tlb_init_slave(struct slave *slave) 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SLAVE_TLB_INFO(slave).load = 0; 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SLAVE_TLB_INFO(slave).head = TLB_NULL_INDEX; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 142f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov/* Caller must hold bond lock for read, BH disabled */ 143f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic void __tlb_clear_slave(struct bonding *bond, struct slave *slave, 144f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov int save_load) 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tlb_client_info *tx_hash_table; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 index; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear slave from tx_hashtbl */ 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_hash_table = BOND_ALB_INFO(bond).tx_hashtbl; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 152ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek /* skip this if we've already freed the tx hash table */ 153ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek if (tx_hash_table) { 154ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek index = SLAVE_TLB_INFO(slave).head; 155ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek while (index != TLB_NULL_INDEX) { 156ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek u32 next_index = tx_hash_table[index].next; 157ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek tlb_init_table_entry(&tx_hash_table[index], save_load); 158ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek index = next_index; 159ce39a800ea87c655de49af021c8b20ee323cb40dAndy Gospodarek } 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tlb_init_slave(slave); 163f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov} 1645af47b2ff124fdad9ba84baeb9f7eeebeb227b43Jay Vosburgh 165f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov/* Caller must hold bond lock for read */ 166f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic void tlb_clear_slave(struct bonding *bond, struct slave *slave, 167f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov int save_load) 168f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov{ 169f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_tx_hashtbl_bh(bond); 170f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov __tlb_clear_slave(bond, slave, save_load); 171f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_tx_hashtbl_bh(bond); 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Must be called before starting the monitor timer */ 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tlb_initialize(struct bonding *bond) 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int size = TLB_HASH_TABLE_SIZE * sizeof(struct tlb_client_info); 1790d206a3af4329bd833cfa5fe1cc7fe146e49c131Mitch Williams struct tlb_client_info *new_hashtbl; 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 182243cb4e56061c3f4cb76312c5527840344d57c3bJoe Jin new_hashtbl = kzalloc(size, GFP_KERNEL); 183e404decb0fb017be80552adee894b35307b6c7b4Joe Perches if (!new_hashtbl) 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 185e404decb0fb017be80552adee894b35307b6c7b4Joe Perches 186f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_tx_hashtbl_bh(bond); 1870d206a3af4329bd833cfa5fe1cc7fe146e49c131Mitch Williams 1880d206a3af4329bd833cfa5fe1cc7fe146e49c131Mitch Williams bond_info->tx_hashtbl = new_hashtbl; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < TLB_HASH_TABLE_SIZE; i++) { 19138dbaf0afb518e462de7afca552acad048237a73Peter Pan(潘卫平) tlb_init_table_entry(&bond_info->tx_hashtbl[i], 0); 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 194f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_tx_hashtbl_bh(bond); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Must be called only after all slaves have been released */ 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tlb_deinitialize(struct bonding *bond) 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 204f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_tx_hashtbl_bh(bond); 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(bond_info->tx_hashtbl); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->tx_hashtbl = NULL; 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 209f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_tx_hashtbl_bh(bond); 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 212097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirkostatic long long compute_gap(struct slave *slave) 213097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko{ 214097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko return (s64) (slave->speed << 20) - /* Convert to Megabit per sec */ 215097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko (s64) (SLAVE_TLB_INFO(slave).load << 3); /* Bytes to bits */ 216097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko} 217097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Caller must hold bond lock for read */ 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct slave *tlb_get_least_loaded_slave(struct bonding *bond) 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *slave, *least_loaded; 222097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko long long max_gap; 223097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko int i; 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 225097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko least_loaded = NULL; 226097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko max_gap = LLONG_MIN; 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Find the slave with the largest gap */ 229097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko bond_for_each_slave(bond, slave, i) { 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SLAVE_IS_OK(slave)) { 231097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko long long gap = compute_gap(slave); 232097811bb48c7837db94d7fe5d94f0f4b5e19e78cJiri Pirko 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max_gap < gap) { 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds least_loaded = slave; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds max_gap = gap; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return least_loaded; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 243f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic struct slave *__tlb_choose_channel(struct bonding *bond, u32 hash_index, 244f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov u32 skb_len) 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tlb_client_info *hash_table; 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *assigned_slave; 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_table = bond_info->tx_hashtbl; 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds assigned_slave = hash_table[hash_index].tx_slave; 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!assigned_slave) { 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds assigned_slave = tlb_get_least_loaded_slave(bond); 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (assigned_slave) { 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tlb_slave_info *slave_info = 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &(SLAVE_TLB_INFO(assigned_slave)); 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 next_index = slave_info->head; 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_table[hash_index].tx_slave = assigned_slave; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_table[hash_index].next = next_index; 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_table[hash_index].prev = TLB_NULL_INDEX; 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (next_index != TLB_NULL_INDEX) { 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_table[next_index].prev = hash_index; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slave_info->head = hash_index; 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slave_info->load += 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_table[hash_index].load_history; 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (assigned_slave) { 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_table[hash_index].tx_bytes += skb_len; 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return assigned_slave; 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov/* Caller must hold bond lock for read */ 282f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, 283f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov u32 skb_len) 284f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov{ 285f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov struct slave *tx_slave; 286f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov /* 287f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov * We don't need to disable softirq here, becase 288f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov * tlb_choose_channel() is only called by bond_alb_xmit() 289f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov * which already has softirq disabled. 290f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov */ 291f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_tx_hashtbl(bond); 292f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov tx_slave = __tlb_choose_channel(bond, hash_index, skb_len); 293f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_tx_hashtbl(bond); 294f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov return tx_slave; 295f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov} 296f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*********************** rlb specific functions ***************************/ 298f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _lock_rx_hashtbl_bh(struct bonding *bond) 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3006603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock)); 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 303f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _unlock_rx_hashtbl_bh(struct bonding *bond) 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3056603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock)); 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 308f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _lock_rx_hashtbl(struct bonding *bond) 309f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov{ 310f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov spin_lock(&(BOND_ALB_INFO(bond).rx_hashtbl_lock)); 311f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov} 312f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov 313f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarovstatic inline void _unlock_rx_hashtbl(struct bonding *bond) 314f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov{ 315f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov spin_unlock(&(BOND_ALB_INFO(bond).rx_hashtbl_lock)); 316f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov} 317f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* when an ARP REPLY is received from a client update its info 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in the rx_hashtbl 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp) 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *client_info; 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hash_index; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 327f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_index = _simple_hash((u8*)&(arp->ip_src), sizeof(arp->ip_src)); 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info = &(bond_info->rx_hashtbl[hash_index]); 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((client_info->assigned) && 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (client_info->ip_src == arp->ip_dst) && 33442d782ac1bef7cbcdf05b857731345c6e8149f90Flavio Leitner (client_info->ip_dst == arp->ip_src) && 33542d782ac1bef7cbcdf05b857731345c6e8149f90Flavio Leitner (compare_ether_addr_64bits(client_info->mac_dst, arp->mac_src))) { 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* update the clients MAC address */ 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(client_info->mac_dst, arp->mac_src, ETH_ALEN); 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ntt = 1; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_ntt = 1; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 342f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 345b99215cdc6e191f5649687536d4fb0faa3d7f56eDavid S. Millerstatic int rlb_arp_recv(struct sk_buff *skb, struct bonding *bond, 3463aba891dde3842d89ad022237b99c1ed308040b0Jiri Pirko struct slave *slave) 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3483aba891dde3842d89ad022237b99c1ed308040b0Jiri Pirko struct arp_pkt *arp; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3503aba891dde3842d89ad022237b99c1ed308040b0Jiri Pirko if (skb->protocol != cpu_to_be16(ETH_P_ARP)) 351b99215cdc6e191f5649687536d4fb0faa3d7f56eDavid S. Miller goto out; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3533aba891dde3842d89ad022237b99c1ed308040b0Jiri Pirko arp = (struct arp_pkt *) skb->data; 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!arp) { 3555a03cdb7f2d7ff88e50153d8c3b90a1d52dca435Holger Eitzenberger pr_debug("Packet has no ARP data\n"); 356b99215cdc6e191f5649687536d4fb0faa3d7f56eDavid S. Miller goto out; 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3593aba891dde3842d89ad022237b99c1ed308040b0Jiri Pirko if (!pskb_may_pull(skb, arp_hdr_len(bond->dev))) 360b99215cdc6e191f5649687536d4fb0faa3d7f56eDavid S. Miller goto out; 361ab12811c89e88f2e66746790b1fe4469ccb7bdd9Andy Gospodarek 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skb->len < sizeof(struct arp_pkt)) { 3635a03cdb7f2d7ff88e50153d8c3b90a1d52dca435Holger Eitzenberger pr_debug("Packet is too small to be an ARP\n"); 364b99215cdc6e191f5649687536d4fb0faa3d7f56eDavid S. Miller goto out; 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (arp->op_code == htons(ARPOP_REPLY)) { 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* update rx hash table for this ARP */ 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_update_entry_from_arp(bond, arp); 3705a03cdb7f2d7ff88e50153d8c3b90a1d52dca435Holger Eitzenberger pr_debug("Server received an ARP Reply from client\n"); 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 372b99215cdc6e191f5649687536d4fb0faa3d7f56eDavid S. Millerout: 373b99215cdc6e191f5649687536d4fb0faa3d7f56eDavid S. Miller return RX_HANDLER_ANOTHER; 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Caller must hold bond lock for read */ 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct slave *rlb_next_rx_slave(struct bonding *bond) 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *rx_slave, *slave, *start_at; 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = 0; 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->next_rx_slave) { 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds start_at = bond_info->next_rx_slave; 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds start_at = bond->first_slave; 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_slave = NULL; 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave_from(bond, slave, i, start_at) { 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SLAVE_IS_OK(slave)) { 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!rx_slave) { 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_slave = slave; 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (slave->speed > rx_slave->speed) { 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_slave = slave; 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rx_slave) { 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->next_rx_slave = rx_slave->next; 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rx_slave; 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* teach the switch the mac of a disabled slave 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on the primary for fault tolerance 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Caller must hold bond->curr_slave_lock for write or bond lock for write 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_teach_disabled_mac_on_primary(struct bonding *bond, u8 addr[]) 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!bond->curr_active_slave) { 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!bond->alb_info.primary_is_promisc) { 4207e1a1ac1fbaa88fe254400b7f30b775502932ad3Wang Chen if (!dev_set_promiscuity(bond->curr_active_slave->dev, 1)) 4217e1a1ac1fbaa88fe254400b7f30b775502932ad3Wang Chen bond->alb_info.primary_is_promisc = 1; 4227e1a1ac1fbaa88fe254400b7f30b775502932ad3Wang Chen else 4237e1a1ac1fbaa88fe254400b7f30b775502932ad3Wang Chen bond->alb_info.primary_is_promisc = 0; 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.rlb_promisc_timeout_counter = 0; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_send_learning_packets(bond->curr_active_slave, addr); 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* slave being removed should not be active at this point 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Caller must hold bond lock for read 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_clear_slave(struct bonding *bond, struct slave *slave) 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *rx_hash_table; 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 index, next_index; 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear slave from rx_hashtbl */ 442f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_hash_table = bond_info->rx_hashtbl; 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds index = bond_info->rx_hashtbl_head; 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; index != RLB_NULL_INDEX; index = next_index) { 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds next_index = rx_hash_table[index].next; 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rx_hash_table[index].slave == slave) { 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *assigned_slave = rlb_next_rx_slave(bond); 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (assigned_slave) { 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_hash_table[index].slave = assigned_slave; 453885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (compare_ether_addr_64bits(rx_hash_table[index].mac_dst, 454885a136c52a8871175477baf3903e1c38751b35aEric Dumazet mac_bcast)) { 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl[index].ntt = 1; 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_ntt = 1; 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* A slave has been removed from the 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * table because it is either disabled 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or being released. We must retry the 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * update to avoid clients from not 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * being updated & disconnecting when 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * there is stress 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rlb_update_retry_counter = 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RLB_UPDATE_RETRY; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { /* there is no active slave */ 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_hash_table[index].slave = NULL; 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 473f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4756603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh write_lock_bh(&bond->curr_slave_lock); 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (slave != bond->curr_active_slave) { 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_teach_disabled_mac_on_primary(bond, slave->dev->dev_addr); 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4816603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh write_unlock_bh(&bond->curr_slave_lock); 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_update_client(struct rlb_client_info *client_info) 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!client_info->slave) { 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < RLB_ARP_BURST_SIZE; i++) { 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *skb; 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb = arp_create(ARPOP_REPLY, ETH_P_ARP, 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ip_dst, 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->slave->dev, 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ip_src, 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->mac_dst, 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->slave->dev->dev_addr, 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->mac_dst); 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!skb) { 503a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches pr_err("%s: Error: failed to create an ARP packet\n", 5044e0952c74ee450ded86e8946ce58ea8dfd05b007Mitch Williams client_info->slave->dev->master->name); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb->dev = client_info->slave->dev; 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (client_info->tag) { 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb = vlan_put_tag(skb, client_info->vlan_id); 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!skb) { 513a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches pr_err("%s: Error: failed to insert VLAN tag\n", 5144e0952c74ee450ded86e8946ce58ea8dfd05b007Mitch Williams client_info->slave->dev->master->name); 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arp_xmit(skb); 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* sends ARP REPLIES that update the clients that need updating */ 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_update_rx_clients(struct bonding *bond) 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *client_info; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hash_index; 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 530f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_index = bond_info->rx_hashtbl_head; 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) { 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info = &(bond_info->rx_hashtbl[hash_index]); 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (client_info->ntt) { 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_update_client(client_info); 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rlb_update_retry_counter == 0) { 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ntt = 0; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 54394e2bd688820aed72b4f8092f88c2ccf64e003deThadeu Lima de Souza Cascardo /* do not update the entries again until this counter is zero so that 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * not to confuse the clients. 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rlb_update_delay_counter = RLB_UPDATE_DELAY; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 548f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The slave was assigned a new mac address - update the clients */ 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_req_update_slave_clients(struct bonding *bond, struct slave *slave) 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *client_info; 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ntt = 0; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hash_index; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 559f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_index = bond_info->rx_hashtbl_head; 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) { 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info = &(bond_info->rx_hashtbl[hash_index]); 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((client_info->slave == slave) && 566885a136c52a8871175477baf3903e1c38751b35aEric Dumazet compare_ether_addr_64bits(client_info->mac_dst, mac_bcast)) { 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ntt = 1; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ntt = 1; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // update the team's flag only after the whole iteration 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ntt) { 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_ntt = 1; 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //fasten the change 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rlb_update_retry_counter = RLB_UPDATE_RETRY; 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 579f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* mark all clients using src_ip to be updated */ 583d3bb52b0948cf118131c951c5a34a2d4d0246171Al Virostatic void rlb_req_update_subnet_clients(struct bonding *bond, __be32 src_ip) 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *client_info; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hash_index; 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _lock_rx_hashtbl(bond); 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_index = bond_info->rx_hashtbl_head; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) { 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info = &(bond_info->rx_hashtbl[hash_index]); 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!client_info->slave) { 596a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches pr_err("%s: Error: found a client with no channel in the client's hash table\n", 5974e0952c74ee450ded86e8946ce58ea8dfd05b007Mitch Williams bond->dev->name); 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /*update all clients using this src_ip, that are not assigned 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to the team's address (curr_active_slave) and have a known 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unicast mac address. 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((client_info->ip_src == src_ip) && 605885a136c52a8871175477baf3903e1c38751b35aEric Dumazet compare_ether_addr_64bits(client_info->slave->dev->dev_addr, 606885a136c52a8871175477baf3903e1c38751b35aEric Dumazet bond->dev->dev_addr) && 607885a136c52a8871175477baf3903e1c38751b35aEric Dumazet compare_ether_addr_64bits(client_info->mac_dst, mac_bcast)) { 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ntt = 1; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_ntt = 1; 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _unlock_rx_hashtbl(bond); 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Caller must hold both bond and ptr locks for read */ 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bond) 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 620a16aeb36239ce612699ed64a75a03c88cbc657e8Arnaldo Carvalho de Melo struct arp_pkt *arp = arp_pkt(skb); 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *assigned_slave; 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *client_info; 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hash_index = 0; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _lock_rx_hashtbl(bond); 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 627e364a3416d81c7717dd642dc9b3ab132b7885f66Amerigo Wang hash_index = _simple_hash((u8 *)&arp->ip_dst, sizeof(arp->ip_dst)); 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info = &(bond_info->rx_hashtbl[hash_index]); 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (client_info->assigned) { 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((client_info->ip_src == arp->ip_src) && 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (client_info->ip_dst == arp->ip_dst)) { 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* the entry is already assigned to this client */ 634885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (compare_ether_addr_64bits(arp->mac_dst, mac_bcast)) { 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* update mac address from arp */ 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(client_info->mac_dst, arp->mac_dst, ETH_ALEN); 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds assigned_slave = client_info->slave; 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (assigned_slave) { 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _unlock_rx_hashtbl(bond); 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return assigned_slave; 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* the entry is already assigned to some other client, 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * move the old client to primary (curr_active_slave) so 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that the new client can be assigned to this entry. 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->curr_active_slave && 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->slave != bond->curr_active_slave) { 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->slave = bond->curr_active_slave; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_update_client(client_info); 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* assign a new slave */ 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds assigned_slave = rlb_next_rx_slave(bond); 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (assigned_slave) { 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ip_src = arp->ip_src; 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ip_dst = arp->ip_dst; 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* arp->mac_dst is broadcast for arp reqeusts. 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will be updated with clients actual unicast mac address 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * upon receiving an arp reply. 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(client_info->mac_dst, arp->mac_dst, ETH_ALEN); 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->slave = assigned_slave; 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 669885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (compare_ether_addr_64bits(client_info->mac_dst, mac_bcast)) { 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ntt = 1; 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.rx_ntt = 1; 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ntt = 0; 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 676cc0e40700656b09d93b062ef6c818aa45429d09aJiri Pirko if (bond_vlan_used(bond)) { 677966bc6f434df4a02108d01dda8cd52951fe853daJay Vosburgh if (!vlan_get_tag(skb, &client_info->vlan_id)) 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->tag = 1; 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!client_info->assigned) { 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 prev_tbl_head = bond_info->rx_hashtbl_head; 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl_head = hash_index; 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->next = prev_tbl_head; 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (prev_tbl_head != RLB_NULL_INDEX) { 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl[prev_tbl_head].prev = 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_index; 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->assigned = 1; 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _unlock_rx_hashtbl(bond); 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return assigned_slave; 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* chooses (and returns) transmit channel for arp reply 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * does not choose channel for other arp types since they are 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sent on the curr_active_slave 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond) 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 704a16aeb36239ce612699ed64a75a03c88cbc657e8Arnaldo Carvalho de Melo struct arp_pkt *arp = arp_pkt(skb); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *tx_slave = NULL; 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 707f14c4e4e3651b76ae09082fa66cda37e10ac2b43Brian Haley if (arp->op_code == htons(ARPOP_REPLY)) { 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* the arp must be sent on the selected 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * rx channel 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_slave = rlb_choose_channel(skb, bond); 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tx_slave) { 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(arp->mac_src,tx_slave->dev->dev_addr, ETH_ALEN); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7155a03cdb7f2d7ff88e50153d8c3b90a1d52dca435Holger Eitzenberger pr_debug("Server sent ARP Reply packet\n"); 716f14c4e4e3651b76ae09082fa66cda37e10ac2b43Brian Haley } else if (arp->op_code == htons(ARPOP_REQUEST)) { 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Create an entry in the rx_hashtbl for this client as a 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * place holder. 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * When the arp reply is received the entry will be updated 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with the correct unicast address of the client. 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_choose_channel(skb, bond); 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 72477c8e2c01542649f7a02fef8eb3b3d0e7fed6bbdPeter Pan(潘卫平) /* The ARP reply packets must be delayed so that 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * they can cancel out the influence of the ARP request. 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.rlb_update_delay_counter = RLB_UPDATE_DELAY; 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* arp requests are broadcast and are sent on the primary 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the arp request will collapse all clients on the subnet to 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the primary slave. We must register these clients to be 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * updated with their assigned mac. 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_req_update_subnet_clients(bond, arp->ip_src); 7355a03cdb7f2d7ff88e50153d8c3b90a1d52dca435Holger Eitzenberger pr_debug("Server sent ARP Request packet\n"); 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tx_slave; 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Caller must hold bond lock for read */ 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_rebalance(struct bonding *bond) 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *assigned_slave; 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *client_info; 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ntt; 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hash_index; 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 750f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ntt = 0; 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_index = bond_info->rx_hashtbl_head; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) { 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info = &(bond_info->rx_hashtbl[hash_index]); 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds assigned_slave = rlb_next_rx_slave(bond); 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (assigned_slave && (client_info->slave != assigned_slave)) { 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->slave = assigned_slave; 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds client_info->ntt = 1; 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ntt = 1; 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* update the team's flag only after the whole iteration */ 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ntt) { 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_ntt = 1; 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 768f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Caller must hold rx_hashtbl lock */ 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_init_table_entry(struct rlb_client_info *entry) 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(entry, 0, sizeof(struct rlb_client_info)); 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->next = RLB_NULL_INDEX; 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->prev = RLB_NULL_INDEX; 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int rlb_initialize(struct bonding *bond) 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 7820d206a3af4329bd833cfa5fe1cc7fe146e49c131Mitch Williams struct rlb_client_info *new_hashtbl; 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int size = RLB_HASH_TABLE_SIZE * sizeof(struct rlb_client_info); 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7860d206a3af4329bd833cfa5fe1cc7fe146e49c131Mitch Williams new_hashtbl = kmalloc(size, GFP_KERNEL); 787e404decb0fb017be80552adee894b35307b6c7b4Joe Perches if (!new_hashtbl) 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 789e404decb0fb017be80552adee894b35307b6c7b4Joe Perches 790f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 7910d206a3af4329bd833cfa5fe1cc7fe146e49c131Mitch Williams 7920d206a3af4329bd833cfa5fe1cc7fe146e49c131Mitch Williams bond_info->rx_hashtbl = new_hashtbl; 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl_head = RLB_NULL_INDEX; 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < RLB_HASH_TABLE_SIZE; i++) { 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_init_table_entry(bond_info->rx_hashtbl + i); 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 800f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* register to receive ARPs */ 8033aba891dde3842d89ad022237b99c1ed308040b0Jiri Pirko bond->recv_probe = rlb_arp_recv; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_deinitialize(struct bonding *bond) 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 812f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(bond_info->rx_hashtbl); 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl = NULL; 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl_head = RLB_NULL_INDEX; 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 818f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id) 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 curr_index; 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 826f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_rx_hashtbl_bh(bond); 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_index = bond_info->rx_hashtbl_head; 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (curr_index != RLB_NULL_INDEX) { 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rlb_client_info *curr = &(bond_info->rx_hashtbl[curr_index]); 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 next_index = bond_info->rx_hashtbl[curr_index].next; 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 prev_index = bond_info->rx_hashtbl[curr_index].prev; 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (curr->tag && (curr->vlan_id == vlan_id)) { 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (curr_index == bond_info->rx_hashtbl_head) { 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl_head = next_index; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (prev_index != RLB_NULL_INDEX) { 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl[prev_index].next = next_index; 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (next_index != RLB_NULL_INDEX) { 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_hashtbl[next_index].prev = prev_index; 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_init_table_entry(curr); 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_index = next_index; 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 851f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_rx_hashtbl_bh(bond); 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*********************** tlb/rlb shared functions *********************/ 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]) 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct bonding *bond = bond_get_bond_by_slave(slave); 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct learning_pkt pkt; 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int size = sizeof(struct learning_pkt); 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(&pkt, 0, size); 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(pkt.mac_dst, mac_addr, ETH_ALEN); 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(pkt.mac_src, mac_addr, ETH_ALEN); 86609640e6365c679b5642b1c41b6d7078f51689ddfHarvey Harrison pkt.type = cpu_to_be16(ETH_P_LOOP); 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < MAX_LP_BURST; i++) { 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *skb; 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *data; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb = dev_alloc_skb(size); 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!skb) { 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data = skb_put(skb, size); 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(data, &pkt, size); 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 880459a98ed881802dee55897441bc7f77af614368eArnaldo Carvalho de Melo skb_reset_mac_header(skb); 881b0e380b1d8a8e0aca215df97702f99815f05c094Arnaldo Carvalho de Melo skb->network_header = skb->mac_header + ETH_HLEN; 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb->protocol = pkt.type; 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb->priority = TC_PRIO_CONTROL; 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb->dev = slave->dev; 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 886cc0e40700656b09d93b062ef6c818aa45429d09aJiri Pirko if (bond_vlan_used(bond)) { 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct vlan_entry *vlan; 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vlan = bond_next_vlan(bond, 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.current_alb_vlan); 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.current_alb_vlan = vlan; 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!vlan) { 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree_skb(skb); 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb = vlan_put_tag(skb, vlan->vlan_id); 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!skb) { 900a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches pr_err("%s: Error: failed to insert VLAN tag\n", 9014e0952c74ee450ded86e8946ce58ea8dfd05b007Mitch Williams bond->dev->name); 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_queue_xmit(skb); 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 910b924551bed09f61b64f21bffe241afc5526b091aJiri Bohacstatic int alb_set_slave_mac_addr(struct slave *slave, u8 addr[]) 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev = slave->dev; 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sockaddr s_addr; 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 915b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac if (slave->bond->params.mode == BOND_MODE_TLB) { 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(dev->dev_addr, addr, dev->addr_len); 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* for rlb each slave must have a unique hw mac addresses so that */ 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* each slave will receive packets destined to a different mac */ 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(s_addr.sa_data, addr, dev->addr_len); 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s_addr.sa_family = dev->type; 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dev_set_mac_address(dev, &s_addr)) { 925a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches pr_err("%s: Error: dev_set_mac_address of dev %s failed!\n" 926a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches "ALB mode requires that the base driver support setting the hw address also when the network device's interface is open\n", 9274e0952c74ee450ded86e8946ce58ea8dfd05b007Mitch Williams dev->master->name, dev->name); 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EOPNOTSUPP; 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 933059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh/* 934059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * Swap MAC addresses between two slaves. 935059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * 936059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * Called with RTNL held, and no other locks. 937059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * 938059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh */ 939059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void alb_swap_mac_addr(struct bonding *bond, struct slave *slave1, struct slave *slave2) 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 tmp_mac_addr[ETH_ALEN]; 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(tmp_mac_addr, slave1->dev->dev_addr, ETH_ALEN); 945b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac alb_set_slave_mac_addr(slave1, slave2->dev->dev_addr); 946b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac alb_set_slave_mac_addr(slave2, tmp_mac_addr); 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 948059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh} 949059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh 950059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh/* 951059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * Send learning packets after MAC address swap. 952059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * 9532543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh * Called with RTNL and no other locks 954059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh */ 955059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburghstatic void alb_fasten_mac_swap(struct bonding *bond, struct slave *slave1, 956059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh struct slave *slave2) 957059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh{ 958059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh int slaves_state_differ = (SLAVE_IS_OK(slave1) != SLAVE_IS_OK(slave2)); 959059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh struct slave *disabled_slave = NULL; 960059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh 9612543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh ASSERT_RTNL(); 9622543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fasten the change in the switch */ 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SLAVE_IS_OK(slave1)) { 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_send_learning_packets(slave1, slave1->dev->dev_addr); 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* inform the clients that the mac address 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * has changed 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_req_update_slave_clients(bond, slave1); 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds disabled_slave = slave1; 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SLAVE_IS_OK(slave2)) { 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_send_learning_packets(slave2, slave2->dev->dev_addr); 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* inform the clients that the mac address 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * has changed 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_req_update_slave_clients(bond, slave2); 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds disabled_slave = slave2; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled && slaves_state_differ) { 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* A disabled slave was assigned an active mac addr */ 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_teach_disabled_mac_on_primary(bond, 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds disabled_slave->dev->dev_addr); 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * alb_change_hw_addr_on_detach 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @bond: bonding we're working on 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @slave: the slave that was just detached 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We assume that @slave was already detached from the slave list. 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If @slave's permanent hw address is different both from its current 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address and from @bond's address, then somewhere in the bond there's 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a slave that has @slave's permanet address as its current address. 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We'll make sure that that slave no longer uses @slave's permanent address. 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10072543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh * Caller must hold RTNL and no other locks 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void alb_change_hw_addr_on_detach(struct bonding *bond, struct slave *slave) 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int perm_curr_diff; 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int perm_bond_diff; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1014885a136c52a8871175477baf3903e1c38751b35aEric Dumazet perm_curr_diff = compare_ether_addr_64bits(slave->perm_hwaddr, 1015885a136c52a8871175477baf3903e1c38751b35aEric Dumazet slave->dev->dev_addr); 1016885a136c52a8871175477baf3903e1c38751b35aEric Dumazet perm_bond_diff = compare_ether_addr_64bits(slave->perm_hwaddr, 1017885a136c52a8871175477baf3903e1c38751b35aEric Dumazet bond->dev->dev_addr); 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (perm_curr_diff && perm_bond_diff) { 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *tmp_slave; 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i, found = 0; 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, tmp_slave, i) { 1024885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(slave->perm_hwaddr, 1025885a136c52a8871175477baf3903e1c38751b35aEric Dumazet tmp_slave->dev->dev_addr)) { 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds found = 1; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (found) { 1032059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh /* locking: needs RTNL and nothing else */ 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_swap_mac_addr(bond, slave, tmp_slave); 1034059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh alb_fasten_mac_swap(bond, slave, tmp_slave); 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * alb_handle_addr_collision_on_attach 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @bond: bonding we're working on 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @slave: the slave that was just attached 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * checks uniqueness of slave's mac address and handles the case the 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * new slave uses the bonds mac address. 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If the permanent hw address of @slave is @bond's hw address, we need to 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * find a different hw address to give @slave, that isn't in use by any other 104977c8e2c01542649f7a02fef8eb3b3d0e7fed6bbdPeter Pan(潘卫平) * slave in the bond. This address must be, of course, one of the permanent 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * addresses of the other slaves. 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We go over the slave list, and for each slave there we compare its 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * permanent hw address with the current address of all the other slaves. 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If no match was found, then we've found a slave with a permanent address 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that isn't used by any other slave in the bond, so we can assign it to 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @slave. 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * assumption: this function is called before @slave is attached to the 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bond slave list. 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * caller must hold the bond lock for write since the mac addresses are compared 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and may be swapped. 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int alb_handle_addr_collision_on_attach(struct bonding *bond, struct slave *slave) 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *tmp_slave1, *tmp_slave2, *free_mac_slave; 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *has_bond_addr = bond->curr_active_slave; 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i, j, found = 0; 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->slave_cnt == 0) { 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this is the first slave */ 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if slave's mac address differs from bond's mac address 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * check uniqueness of slave's mac address against the other 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * slaves in the bond. 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1079885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (compare_ether_addr_64bits(slave->perm_hwaddr, bond->dev->dev_addr)) { 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, tmp_slave1, i) { 1081885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(tmp_slave1->dev->dev_addr, 1082885a136c52a8871175477baf3903e1c38751b35aEric Dumazet slave->dev->dev_addr)) { 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds found = 1; 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10886b38aefe924daf2e4fdd73b384f21c913f31b668John W. Linville if (!found) 10896b38aefe924daf2e4fdd73b384f21c913f31b668John W. Linville return 0; 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10916b38aefe924daf2e4fdd73b384f21c913f31b668John W. Linville /* Try setting slave mac to bond address and fall-through 10926b38aefe924daf2e4fdd73b384f21c913f31b668John W. Linville to code handling that situation below... */ 1093b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac alb_set_slave_mac_addr(slave, bond->dev->dev_addr); 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The slave's address is equal to the address of the bond. 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Search for a spare address in the bond for this slave. 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_mac_slave = NULL; 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, tmp_slave1, i) { 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds found = 0; 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, tmp_slave2, j) { 1104885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(tmp_slave1->perm_hwaddr, 1105885a136c52a8871175477baf3903e1c38751b35aEric Dumazet tmp_slave2->dev->dev_addr)) { 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds found = 1; 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!found) { 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no slave has tmp_slave1's perm addr 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as its curr addr 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_mac_slave = tmp_slave1; 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!has_bond_addr) { 1120885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(tmp_slave1->dev->dev_addr, 1121885a136c52a8871175477baf3903e1c38751b35aEric Dumazet bond->dev->dev_addr)) { 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds has_bond_addr = tmp_slave1; 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (free_mac_slave) { 1129b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac alb_set_slave_mac_addr(slave, free_mac_slave->perm_hwaddr); 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches pr_warning("%s: Warning: the hw address of slave %s is in use by the bond; giving it the hw address of %s\n", 1132e5e2a8fd8358d1b3a2c51c3248edee72e4194703Jiri Pirko bond->dev->name, slave->dev->name, 1133e5e2a8fd8358d1b3a2c51c3248edee72e4194703Jiri Pirko free_mac_slave->dev->name); 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (has_bond_addr) { 1136a4aee5c808fc5bf6889c9012217841eb3fd91a6aJoe Perches pr_err("%s: Error: 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", 11374e0952c74ee450ded86e8946ce58ea8dfd05b007Mitch Williams bond->dev->name, slave->dev->name); 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * alb_set_mac_address 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @bond: 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @addr: 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * In TLB mode all slaves are configured to the bond's hw address, but set 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * their dev_addr field to different addresses (based on their permanent hw 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * addresses). 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * For each slave, this function sets the interface to the new address and then 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * changes its dev_addr field to its previous value. 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unwinding assumes bond's mac address has not yet changed. 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int alb_set_mac_address(struct bonding *bond, void *addr) 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sockaddr sa; 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *slave, *stop_at; 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char tmp_addr[ETH_ALEN]; 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res; 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, slave, i) { 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save net_device's current hw address */ 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(tmp_addr, slave->dev->dev_addr, ETH_ALEN); 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = dev_set_mac_address(slave->dev, addr); 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* restore net_device's hw address */ 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(slave->dev->dev_addr, tmp_addr, ETH_ALEN); 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1179eb7cc59a038b4e1914ae991d313f35904924759fStephen Hemminger if (res) 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto unwind; 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunwind: 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(sa.sa_data, bond->dev->dev_addr, bond->dev->addr_len); 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sa.sa_family = bond->dev->type; 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* unwind from head to the slave that failed */ 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds stop_at = slave; 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(tmp_addr, slave->dev->dev_addr, ETH_ALEN); 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_set_mac_address(slave->dev, &sa); 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(slave->dev->dev_addr, tmp_addr, ETH_ALEN); 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/************************ exported alb funcions ************************/ 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint bond_alb_initialize(struct bonding *bond, int rlb_enabled) 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res; 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = tlb_initialize(bond); 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rlb_enabled) { 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.rlb_enabled = 1; 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize rlb */ 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = rlb_initialize(bond); 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tlb_deinitialize(bond); 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1219b76850ab577bb4b929e60894d2025bbfcc043984Mitch Williams } else { 1220b76850ab577bb4b929e60894d2025bbfcc043984Mitch Williams bond->alb_info.rlb_enabled = 0; 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid bond_alb_deinitialize(struct bonding *bond) 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tlb_deinitialize(bond); 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rlb_enabled) { 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_deinitialize(bond); 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1239454d7c9b14e20fd1949e2686e9de4a2926e01476Wang Chen struct bonding *bond = netdev_priv(bond_dev); 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ethhdr *eth_data; 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *tx_slave = NULL; 1243d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro static const __be32 ip_bcast = htonl(0xffffffff); 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int hash_size = 0; 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int do_tx_balance = 1; 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hash_index = 0; 1247eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo const u8 *hash_start = NULL; 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res = 1; 12492d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich struct ipv6hdr *ip6hdr; 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1251459a98ed881802dee55897441bc7f77af614368eArnaldo Carvalho de Melo skb_reset_mac_header(skb); 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds eth_data = eth_hdr(skb); 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12540693e88e6ccf615d9674548d8b924cdd9a1c976cMichał Mirosław /* make sure that the curr_active_slave do not change during tx 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_lock(&bond->curr_slave_lock); 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ntohs(skb->protocol)) { 1259eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo case ETH_P_IP: { 1260eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo const struct iphdr *iph = ip_hdr(skb); 1261eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo 1262885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(eth_data->h_dest, mac_bcast) || 1263eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo (iph->daddr == ip_bcast) || 1264eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo (iph->protocol == IPPROTO_IGMP)) { 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_tx_balance = 0; 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1268eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo hash_start = (char *)&(iph->daddr); 1269eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo hash_size = sizeof(iph->daddr); 1270eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0Arnaldo Carvalho de Melo } 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ETH_P_IPV6: 12732d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich /* IPv6 doesn't really use broadcast mac address, but leave 12742d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich * that here just in case. 12752d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich */ 1276885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(eth_data->h_dest, mac_bcast)) { 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_tx_balance = 0; 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12792d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich } 12802d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich 12812d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich /* IPv6 uses all-nodes multicast as an equivalent to 12822d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich * broadcasts in IPv4. 12832d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich */ 1284885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(eth_data->h_dest, mac_v6_allmcast)) { 12852d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich do_tx_balance = 0; 12862d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich break; 12872d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich } 12882d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich 12892d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich /* Additianally, DAD probes should not be tx-balanced as that 12902d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich * will lead to false positives for duplicate addresses and 12912d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich * prevent address configuration from working. 12922d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich */ 12932d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich ip6hdr = ipv6_hdr(skb); 12942d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich if (ipv6_addr_any(&ip6hdr->saddr)) { 12952d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich do_tx_balance = 0; 12962d1ea19da0e84117d3ebbad981e4664bef03152eVlad Yasevich break; 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12990660e03f6b18f19b6bbafe7583265a51b90daf36Arnaldo Carvalho de Melo hash_start = (char *)&(ipv6_hdr(skb)->daddr); 13000660e03f6b18f19b6bbafe7583265a51b90daf36Arnaldo Carvalho de Melo hash_size = sizeof(ipv6_hdr(skb)->daddr); 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ETH_P_IPX: 1303d3bb52b0948cf118131c951c5a34a2d4d0246171Al Viro if (ipx_hdr(skb)->ipx_checksum != IPX_NO_CHECKSUM) { 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* something is wrong with this packet */ 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_tx_balance = 0; 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ipx_hdr(skb)->ipx_type != IPX_TYPE_NCP) { 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The only protocol worth balancing in 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this family since it has an "ARP" like 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mechanism 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_tx_balance = 0; 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_start = (char*)eth_data->h_dest; 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_size = ETH_ALEN; 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ETH_P_ARP: 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_tx_balance = 0; 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rlb_enabled) { 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_slave = rlb_arp_xmit(skb, bond); 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_tx_balance = 0; 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (do_tx_balance) { 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash_index = _simple_hash(hash_start, hash_size); 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_slave = tlb_choose_channel(bond, hash_index, skb->len); 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tx_slave) { 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* unbalanced or unassigned, send through primary */ 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_slave = bond->curr_active_slave; 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->unbalanced_load += skb->len; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tx_slave && SLAVE_IS_OK(tx_slave)) { 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tx_slave != bond->curr_active_slave) { 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(eth_data->h_source, 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_slave->dev->dev_addr, 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ETH_ALEN); 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = bond_dev_queue_xmit(bond, skb, tx_slave->dev); 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tx_slave) { 1353f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _lock_tx_hashtbl(bond); 1354f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov __tlb_clear_slave(bond, tx_slave, 0); 1355f515e6b77045b4b1f54617d9fbf4a22b95a58757Maxim Uvarov _unlock_tx_hashtbl(bond); 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no suitable interface, frame not sent */ 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_kfree_skb(skb); 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_unlock(&bond->curr_slave_lock); 13640693e88e6ccf615d9674548d8b924cdd9a1c976cMichał Mirosław 1365ec634fe328182a1a098585bfc7b69e5042bdb08dPatrick McHardy return NETDEV_TX_OK; 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13681b76b31693d4a6088dec104ff6a6ead54081a3c2Jay Vosburghvoid bond_alb_monitor(struct work_struct *work) 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13701b76b31693d4a6088dec104ff6a6ead54081a3c2Jay Vosburgh struct bonding *bond = container_of(work, struct bonding, 13711b76b31693d4a6088dec104ff6a6ead54081a3c2Jay Vosburgh alb_work.work); 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *slave; 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_lock(&bond->lock); 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->slave_cnt == 0) { 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->tx_rebalance_counter = 0; 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->lp_counter = 0; 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto re_arm; 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->tx_rebalance_counter++; 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->lp_counter++; 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* send learning packets */ 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->lp_counter >= BOND_ALB_LP_TICKS) { 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* change of curr_active_slave involves swapping of mac addresses. 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in order to avoid this swapping from happening while 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sending the learning packets, the curr_slave_lock must be held for 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * read. 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_lock(&bond->curr_slave_lock); 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, slave, i) { 1397e944ef79184ff7f283e7bf79496d2873a0b0410bMitch Williams alb_send_learning_packets(slave, slave->dev->dev_addr); 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_unlock(&bond->curr_slave_lock); 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->lp_counter = 0; 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rebalance tx traffic */ 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->tx_rebalance_counter >= BOND_TLB_REBALANCE_TICKS) { 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_lock(&bond->curr_slave_lock); 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, slave, i) { 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tlb_clear_slave(bond, slave, 1); 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (slave == bond->curr_active_slave) { 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SLAVE_TLB_INFO(slave).load = 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->unbalanced_load / 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BOND_TLB_REBALANCE_INTERVAL; 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->unbalanced_load = 0; 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_unlock(&bond->curr_slave_lock); 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->tx_rebalance_counter = 0; 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle rlb stuff */ 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rlb_enabled) { 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->primary_is_promisc && 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (++bond_info->rlb_promisc_timeout_counter >= RLB_PROMISC_TIMEOUT)) { 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1430d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh /* 1431d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh * dev_set_promiscuity requires rtnl and 1432e6d265e8504ab4a3368b8645d318b344ee88b280Jay Vosburgh * nothing else. Avoid race with bond_close. 1433d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh */ 1434d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh read_unlock(&bond->lock); 1435e6d265e8504ab4a3368b8645d318b344ee88b280Jay Vosburgh if (!rtnl_trylock()) { 1436e6d265e8504ab4a3368b8645d318b344ee88b280Jay Vosburgh read_lock(&bond->lock); 1437e6d265e8504ab4a3368b8645d318b344ee88b280Jay Vosburgh goto re_arm; 1438e6d265e8504ab4a3368b8645d318b344ee88b280Jay Vosburgh } 1439d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rlb_promisc_timeout_counter = 0; 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If the primary was set to promiscuous mode 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * because a slave was disabled then 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it can now leave promiscuous mode. 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_set_promiscuity(bond->curr_active_slave->dev, -1); 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->primary_is_promisc = 0; 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1449d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh rtnl_unlock(); 1450d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh read_lock(&bond->lock); 1451d0e81b7e2246a41d068ecaf15aac9de570816d63Jay Vosburgh } 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rlb_rebalance) { 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rlb_rebalance = 0; 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_rebalance(bond); 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check if clients need updating */ 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rx_ntt) { 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rlb_update_delay_counter) { 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds --bond_info->rlb_update_delay_counter; 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_update_rx_clients(bond); 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond_info->rlb_update_retry_counter) { 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds --bond_info->rlb_update_retry_counter; 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->rx_ntt = 0; 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsre_arm: 1474e6d265e8504ab4a3368b8645d318b344ee88b280Jay Vosburgh queue_delayed_work(bond->wq, &bond->alb_work, alb_delta_in_ticks); 1475e6d265e8504ab4a3368b8645d318b344ee88b280Jay Vosburgh 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_unlock(&bond->lock); 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* assumption: called before the slave is attached to the bond 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and not locked by the bond lock 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint bond_alb_init_slave(struct bonding *bond, struct slave *slave) 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res; 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1486b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac res = alb_set_slave_mac_addr(slave, slave->perm_hwaddr); 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* caller must hold the bond lock for write since the mac addresses 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * are compared and may be swapped. 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14946603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh read_lock(&bond->lock); 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = alb_handle_addr_collision_on_attach(bond, slave); 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14986603a6f25e4bca922a7dfbf0bf03072d98850176Jay Vosburgh read_unlock(&bond->lock); 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tlb_init_slave(slave); 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* order a rebalance ASAP */ 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.tx_rebalance_counter = BOND_TLB_REBALANCE_TICKS; 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.rlb_rebalance = 1; 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15162543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh/* 15172543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh * Remove slave from tlb and rlb hash tables, and fix up MAC addresses 15182543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh * if necessary. 15192543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh * 15202543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh * Caller must hold RTNL and no other locks 15212543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh */ 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid bond_alb_deinit_slave(struct bonding *bond, struct slave *slave) 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->slave_cnt > 1) { 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_change_hw_addr_on_detach(bond, slave); 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tlb_clear_slave(bond, slave, 0); 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.next_rx_slave = NULL; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_clear_slave(bond, slave); 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Caller must hold bond lock for read */ 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link) 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (link == BOND_LINK_DOWN) { 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tlb_clear_slave(bond, slave, 0); 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_clear_slave(bond, slave); 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (link == BOND_LINK_UP) { 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* order a rebalance ASAP */ 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_info->tx_rebalance_counter = BOND_TLB_REBALANCE_TICKS; 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.rlb_rebalance = 1; 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If the updelay module parameter is smaller than the 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * forwarding delay of the switch the rebalance will 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * not work because the rebalance arp replies will 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * not be forwarded to the clients.. 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bond_alb_handle_active_change - assign new curr_active_slave 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @bond: our bonding struct 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @new_slave: new slave to assign 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set the bond->curr_active_slave to @new_slave and handle 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mac address swapping and promiscuity changes as needed. 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1568059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * If new_slave is NULL, caller must hold curr_slave_lock or 1569059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * bond->lock for write. 1570059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * 1571059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * If new_slave is not NULL, caller must hold RTNL, bond->lock for 1572059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * read and curr_slave_lock for write. Processing here may sleep, so 1573059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * no other locks may be held. 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave) 15761f78d9f94539b8806b81057e75025f2bac7d7cccHannes Eder __releases(&bond->curr_slave_lock) 15771f78d9f94539b8806b81057e75025f2bac7d7cccHannes Eder __releases(&bond->lock) 15781f78d9f94539b8806b81057e75025f2bac7d7cccHannes Eder __acquires(&bond->lock) 15791f78d9f94539b8806b81057e75025f2bac7d7cccHannes Eder __acquires(&bond->curr_slave_lock) 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *swap_slave; 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->curr_active_slave == new_slave) { 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->curr_active_slave && bond->alb_info.primary_is_promisc) { 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_set_promiscuity(bond->curr_active_slave->dev, -1); 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.primary_is_promisc = 0; 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.rlb_promisc_timeout_counter = 0; 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds swap_slave = bond->curr_active_slave; 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->curr_active_slave = new_slave; 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!new_slave || (bond->slave_cnt == 0)) { 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the new curr_active_slave to the bonds mac address 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * i.e. swap mac addresses of old curr_active_slave and new curr_active_slave 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!swap_slave) { 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *tmp_slave; 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find slave that is holding the bond's mac address */ 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, tmp_slave, i) { 1608885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(tmp_slave->dev->dev_addr, 1609885a136c52a8871175477baf3903e1c38751b35aEric Dumazet bond->dev->dev_addr)) { 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds swap_slave = tmp_slave; 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1616059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh /* 1617059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * Arrange for swap_slave and new_slave to temporarily be 1618059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * ignored so we can mess with their MAC addresses without 1619059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * fear of interference from transmit activity. 1620059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh */ 1621059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh if (swap_slave) { 1622059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh tlb_clear_slave(bond, swap_slave, 1); 1623059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh } 1624059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh tlb_clear_slave(bond, new_slave, 1); 1625059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh 1626059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh write_unlock_bh(&bond->curr_slave_lock); 1627059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh read_unlock(&bond->lock); 1628059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh 1629e0138a66e18c6755ee29ce13b3f1142af775dc5fJay Vosburgh ASSERT_RTNL(); 1630e0138a66e18c6755ee29ce13b3f1142af775dc5fJay Vosburgh 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* curr_active_slave must be set before calling alb_swap_mac_addr */ 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (swap_slave) { 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* swap mac address */ 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_swap_mac_addr(bond, swap_slave, new_slave); 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the new_slave to the bond mac address */ 1637b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac alb_set_slave_mac_addr(new_slave, bond->dev->dev_addr); 1638059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh } 1639059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh 1640059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh if (swap_slave) { 1641059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh alb_fasten_mac_swap(bond, swap_slave, new_slave); 16422543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh read_lock(&bond->lock); 1643059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh } else { 16442543331d367c9fe54f4ba73300894bc21e0a08f4Jay Vosburgh read_lock(&bond->lock); 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_send_learning_packets(new_slave, bond->dev->dev_addr); 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1647059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh 1648059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh write_lock_bh(&bond->curr_slave_lock); 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh/* 1652059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh * Called with RTNL 1653059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh */ 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint bond_alb_set_mac_address(struct net_device *bond_dev, void *addr) 16551f78d9f94539b8806b81057e75025f2bac7d7cccHannes Eder __acquires(&bond->lock) 1656815bcc2719c12b6f5b511706e2d19728e07f0b02Jay Vosburgh __releases(&bond->lock) 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1658454d7c9b14e20fd1949e2686e9de4a2926e01476Wang Chen struct bonding *bond = netdev_priv(bond_dev); 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sockaddr *sa = addr; 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct slave *slave, *swap_slave; 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res; 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!is_valid_ether_addr(sa->sa_data)) { 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EADDRNOTAVAIL; 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = alb_set_mac_address(bond, addr); 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If there is no curr_active_slave there is nothing else to do. 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Otherwise we'll need to pass the new address to it and handle 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * duplications. 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!bond->curr_active_slave) { 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds swap_slave = NULL; 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond_for_each_slave(bond, slave, i) { 1686885a136c52a8871175477baf3903e1c38751b35aEric Dumazet if (!compare_ether_addr_64bits(slave->dev->dev_addr, 1687885a136c52a8871175477baf3903e1c38751b35aEric Dumazet bond_dev->dev_addr)) { 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds swap_slave = slave; 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (swap_slave) { 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_swap_mac_addr(bond, swap_slave, bond->curr_active_slave); 1695059fe7a578fba5bbb0fdc0365bfcf6218fa25eb0Jay Vosburgh alb_fasten_mac_swap(bond, swap_slave, bond->curr_active_slave); 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1697b924551bed09f61b64f21bffe241afc5526b091aJiri Bohac alb_set_slave_mac_addr(bond->curr_active_slave, bond_dev->dev_addr); 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1699815bcc2719c12b6f5b511706e2d19728e07f0b02Jay Vosburgh read_lock(&bond->lock); 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds alb_send_learning_packets(bond->curr_active_slave, bond_dev->dev_addr); 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* inform clients mac address has changed */ 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_req_update_slave_clients(bond, bond->curr_active_slave); 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1705815bcc2719c12b6f5b511706e2d19728e07f0b02Jay Vosburgh read_unlock(&bond->lock); 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id) 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.current_alb_vlan && 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (bond->alb_info.current_alb_vlan->vlan_id == vlan_id)) { 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bond->alb_info.current_alb_vlan = NULL; 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bond->alb_info.rlb_enabled) { 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rlb_clear_vlan(bond, vlan_id); 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1723