/* Forward declaration */
static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]);
+static void slb_send_learning_packets(struct bonding *bond);
static inline u8 _simple_hash(const u8 *hash_start, int hash_size)
{
/*********************** slb specific functions ***************************/
+static void slb_send_learning_packets(struct bonding *bond)
+{
+ struct vlan_entry *vlan;
+ struct net_device *vlan_dev;
+
+ br_send_gratuitous_switch_learning_packet(bond->dev);
+
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
+ vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
+ br_send_gratuitous_switch_learning_packet(vlan_dev);
+ }
+}
+
void bond_info_show_slb(struct seq_file *seq)
{
struct bonding *bond = seq->private;
/* fasten the change in the switch */
if (SLAVE_IS_OK(slave1)) {
- alb_send_learning_packets(slave1, slave1->dev->dev_addr);
+ if (!bond->alb_info.slb_enabled)
+ alb_send_learning_packets(slave1, slave1->dev->dev_addr);
if (bond->alb_info.rlb_enabled) {
/* inform the clients that the mac address
* has changed
}
if (SLAVE_IS_OK(slave2)) {
- alb_send_learning_packets(slave2, slave2->dev->dev_addr);
+ if (!bond->alb_info.slb_enabled)
+ alb_send_learning_packets(slave2, slave2->dev->dev_addr);
if (bond->alb_info.rlb_enabled) {
/* inform the clients that the mac address
* has changed
disabled_slave = slave2;
}
+ if (bond->alb_info.slb_enabled)
+ slb_send_learning_packets(bond);
+
if (bond->alb_info.rlb_enabled && slaves_state_differ) {
/* A disabled slave was assigned an active mac addr */
rlb_teach_disabled_mac_on_primary(bond,
/* unbalanced or unassigned, send through primary */
tx_slave = bond->curr_active_slave;
bond_info->unbalanced_load += skb->len;
- printk(KERN_ERR "No slave for %02x:%02x:%02x:%02x:%02x:%02x.\n",
- eth_data->h_source[0], eth_data->h_source[1],
- eth_data->h_source[2], eth_data->h_source[3],
- eth_data->h_source[4], eth_data->h_source[5]);
- if (tx_slave) {
- printk(KERN_ERR "Sending via primary %s (hash_index %x, length %x)\n",
- tx_slave->dev->name, hash_index, hash_size);
- } else {
+ if (!tx_slave)
printk(KERN_ERR "No primary interface found\n");
- }
}
if (tx_slave && SLAVE_IS_OK(tx_slave)) {
bond_info->lp_counter++;
/* send learning packets */
- if (bond_info->lp_counter >= BOND_ALB_LP_TICKS) {
+ if (!bond->alb_info.slb_enabled && bond_info->lp_counter >= BOND_ALB_LP_TICKS) {
/* change of curr_active_slave involves swapping of mac addresses.
* in order to avoid this swapping from happening while
* sending the learning packets, the curr_slave_lock must be held for
BOND_TLB_REBALANCE_INTERVAL;
bond_info->unbalanced_load = 0;
}
- /*
- * No need for ARP in the SLB case since the
- * RX path remains valid, although we may
- * shortly be choosing a different TX path
- * which will cause RX to change too.
- */
}
+ if (bond->alb_info.slb_enabled)
+ slb_send_learning_packets(bond);
+
read_unlock(&bond->curr_slave_lock);
bond_info->tx_rebalance_counter = 0;
* gone away. Send a gratuitous packet which
* will cause the switch to update its tables.
*/
- br_send_gratuitous_switch_learning_packet(bond->dev);
+ slb_send_learning_packets(bond);
}
} else if (link == BOND_LINK_UP) {
/* order a rebalance ASAP */
read_lock(&bond->lock);
} else {
read_lock(&bond->lock);
- alb_send_learning_packets(new_slave, bond->dev->dev_addr);
+ if (bond->alb_info.slb_enabled)
+ slb_send_learning_packets(bond);
+ else
+ alb_send_learning_packets(new_slave, bond->dev->dev_addr);
}
write_lock_bh(&bond->curr_slave_lock);
alb_set_slave_mac_addr(bond->curr_active_slave, bond_dev->dev_addr,
bond->alb_info.rlb_enabled);
- alb_send_learning_packets(bond->curr_active_slave, bond_dev->dev_addr);
+ if (bond->alb_info.slb_enabled)
+ slb_send_learning_packets(bond);
+ else
+ alb_send_learning_packets(bond->curr_active_slave, bond_dev->dev_addr);
if (bond->alb_info.rlb_enabled) {
/* inform clients mac address has changed */
rlb_req_update_slave_clients(bond, bond->curr_active_slave);
*/
static void bond_mc_add(struct bonding *bond, void *addr, int alen)
{
- if (USES_PRIMARY(bond->params.mode)) {
+
+ if (USES_PRIMARY(bond->params.mode) && bond->params.mode != BOND_MODE_SLB) {
/* write lock already acquired */
if (bond->curr_active_slave) {
dev_mc_add(bond->curr_active_slave->dev, addr, alen, 0);
dev_mc_add (slave_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
}
netif_addr_unlock_bh(bond_dev);
+ } else if (bond->params.mode == BOND_MODE_SLB) {
+ /* set promiscuity level to new slave */
+ if (bond_dev->flags & IFF_PROMISC) {
+ dev_set_promiscuity(slave_dev, 1);
+ }
}
if (bond->params.mode == BOND_MODE_8023AD) {
bond_set_xmit_hash_policy(bond);
break;
case BOND_MODE_ALB:
+ case BOND_MODE_SLB:
bond_set_master_alb_flags(bond);
/* FALLTHRU */
- case BOND_MODE_SLB:
case BOND_MODE_TLB:
bond_dev->hard_start_xmit = bond_alb_xmit;
bond_dev->set_mac_address = bond_alb_set_mac_address;
#define USES_PRIMARY(mode) \
(((mode) == BOND_MODE_ACTIVEBACKUP) || \
((mode) == BOND_MODE_TLB) || \
- ((mode) == BOND_MODE_ALB) || \
+ ((mode) == BOND_MODE_ALB) || \
((mode) == BOND_MODE_SLB))
/*
#include <linux/etherdevice.h>
#include <linux/jhash.h>
#include <linux/random.h>
+#include <linux/if_arp.h>
#include <asm/atomic.h>
#include <asm/unaligned.h>
#include "br_private.h"
return ret;
}
-void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
- const unsigned char *addr)
+int br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
+ struct sk_buff *skb)
{
+ const unsigned char *addr = eth_hdr(skb)->h_source;
struct hlist_head *head = &br->hash[br_mac_hash(addr)];
struct net_bridge_fdb_entry *fdb;
+ static const u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
/* some users want to always flood. */
if (hold_time(br) == 0)
- return;
+ return 1;
/* ignore packets unless we are using this port */
if (!(source->state == BR_STATE_LEARNING ||
fdb = fdb_find(head, addr);
if (likely(fdb)) {
+ /*
+ * If this is an address arriving on the physical port
+ * which we have previously seen on a non-physical
+ * port then ignore it.
+ *
+ * _Unless_ it is a broadcast ARP reply in which case
+ * the guest in question has migrated.
+ */
+ extern struct net_bridge_port *br_locate_physical_port(struct net_bridge *br);
+ struct net_bridge_port *phys_port = br_locate_physical_port(br);
+ if (phys_port && phys_port != fdb->dst && phys_port == source) {
+#pragma pack(1)
+ struct arp_pkt {
+ u16 hw_addr_space;
+ u16 prot_addr_space;
+ u8 hw_addr_len;
+ u8 prot_addr_len;
+ u16 op_code;
+ u8 mac_src[ETH_ALEN]; /* sender hardware address */
+ u32 ip_src; /* sender IP address */
+ u8 mac_dst[ETH_ALEN]; /* target hardware address */
+ u32 ip_dst; /* target IP address */
+ };
+#pragma pack()
+ struct arp_pkt *arp = (struct arp_pkt *)skb->data;
+
+ if (compare_ether_addr(bcast, addr) != 0)
+ return 0;
+
+ if (!arp)
+ return 0;
+
+ if (skb->len < sizeof(struct arp_pkt))
+ return 0;
+
+ if (eth_hdr(skb)->h_proto != htons(ETH_P_ARP))
+ return 0;
+
+ if (arp->op_code != htons(ARPOP_REPLY))
+ return 0;
+ }
+
/* attempt to update an entry for a local interface */
if (unlikely(fdb->is_local)) {
+ return 0;
if (net_ratelimit())
printk(KERN_WARNING "%s: received packet with "
" own address as source address\n",
*/
spin_unlock(&br->hash_lock);
}
+
+ return 1;
}
#include <linux/kernel.h>
#include <linux/netdevice.h>
+#include <linux/pkt_sched.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/if_arp.h>
br->topology_change = 0;
br->topology_change_detected = 0;
br->ageing_time = 300 * HZ;
+ br->phys_port = NULL;
br_netfilter_rtable_init(br);
return p;
}
+struct net_bridge_port *br_locate_physical_port(struct net_bridge *br)
+{
+ struct net_bridge_port *p;
+ if (!br->phys_port) {
+ list_for_each_entry(p, &br->port_list, list) {
+ if (!compare_ether_addr(br->dev->dev_addr, p->dev->dev_addr)) {
+ br->phys_port = p;
+ break;
+ }
+ }
+ }
+ return br->phys_port;
+}
+
struct net_device *br_locate_physical_device(struct net_device *dev)
{
struct net_bridge *br;
return dev;
br = netdev_priv(dev);
+ p = br_locate_physical_port(br);
- list_for_each_entry(p, &br->port_list, list) {
- if (!compare_ether_addr(dev->dev_addr, p->dev->dev_addr))
- return p->dev;
- }
- return dev;
+ return p ? p->dev : dev;
}
EXPORT_SYMBOL(br_locate_physical_device);
static struct sk_buff *create_switch_learning_packet(struct net_device *dev, unsigned char *src_hw)
{
+#pragma pack(1)
+ struct learning_pkt {
+ u8 mac_dst[ETH_ALEN];
+ u8 mac_src[ETH_ALEN];
+ u16 type;
+ u8 padding[ETH_ZLEN - ETH_HLEN];
+ };
+#pragma pack()
struct sk_buff *skb;
- unsigned char *data;
-
- /*
- * Xen OUI is 00-16-3E therefore multicast address is 01-16-3E.
- * Use the first of these addresses as our destination address with protocol type 0.
- * Include the physical interface's MAC address as the payload.
- */
- unsigned char dest_hw[ETH_ALEN] = {0x01, 0x16, 0x3e, 0x00, 0x00, 0x00};
-
- skb = alloc_skb(ETH_ALEN + LL_RESERVED_SPACE(dev), GFP_ATOMIC);
- if (skb == NULL)
+ struct learning_pkt pkt;
+ int size = sizeof(struct learning_pkt);
+ char *data;
+ const unsigned char dest_hw[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+ memset(&pkt, 0, size);
+ memcpy(pkt.mac_dst, dest_hw, ETH_ALEN);
+ memcpy(pkt.mac_src, src_hw, ETH_ALEN);
+ pkt.type = __constant_htons(ETH_P_LOOP);
+
+ skb = dev_alloc_skb(size);
+ if (!skb)
return NULL;
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
- skb->nh.raw = skb->data;
- data = (unsigned char *) skb_put(skb, ETH_ALEN);
+ data = skb_put(skb, size);
+ memcpy(data, &pkt, size);
+ skb->protocol = pkt.type;
+ skb->priority = TC_PRIO_CONTROL;
skb->dev = dev;
- skb->protocol = 0;
-
- if (dev->hard_header &&
- dev->hard_header(skb,dev,0,&dest_hw,src_hw,skb->len) < 0)
- goto out;
-
- memcpy(data, dev->dev_addr, ETH_ALEN);
return skb;
-
-out:
- kfree_skb(skb);
- return NULL;
}
void br_send_gratuitous_switch_learning_packet(struct net_device *dev)
{
struct net_bridge *br;
struct net_device *phys;
+ struct sk_buff *skb;
int i;
if (!dev->br_port)
if (f->dst != phys->br_port &&
f->dst->dev->addr_len == ETH_ALEN &&
memcmp(&f->dst->dev->dev_addr[0], &f->addr.addr[0], ETH_ALEN) != 0) {
- struct sk_buff *skb;
skb = create_switch_learning_packet(dev, f->addr.addr);
if (skb == NULL)
goto out;
dev_queue_xmit(skb);
+
+ f->ageing_timer = jiffies;
}
}
}
+
+ skb = create_switch_learning_packet(dev, dev->dev_addr);
+ if (skb)
+ dev_queue_xmit(skb);
+
out:
spin_unlock_bh(&br->hash_lock);
}
if (!p || p->br != br)
return -EINVAL;
+ if ( p == br->phys_port )
+ br->phys_port = NULL;
+
del_nbp(p);
spin_lock_bh(&br->lock);
/* insert into forwarding database after filtering to avoid spoofing */
br = p->br;
- br_fdb_update(br, p, eth_hdr(skb)->h_source);
+ if (!br_fdb_update(br, p, skb))
+ goto drop;
if (p->state == BR_STATE_LEARNING)
goto drop;
{
struct net_bridge_port *p = rcu_dereference(skb->dev->br_port);
- if (p)
- br_fdb_update(p->br, p, eth_hdr(skb)->h_source);
+ if (p) {
+ if (!br_fdb_update(p->br, p, skb)) {
+ kfree_skb(skb);
+ return 1;
+ }
+ }
+
return 0; /* process further */
}
-
/* Does address match the link local multicast address.
* 01:80:c2:00:00:0X
*/
struct list_head port_list;
struct list_head promiscuous_list;
struct net_device *dev;
+ struct net_bridge_port *phys_port; /* One of our ports will contains the route to the physical world */
spinlock_t hash_lock;
struct hlist_head hash[BR_HASH_SIZE];
struct list_head age_list;
extern int br_fdb_insert(struct net_bridge *br,
struct net_bridge_port *source,
const unsigned char *addr);
-extern void br_fdb_update(struct net_bridge *br,
- struct net_bridge_port *source,
- const unsigned char *addr);
+extern int br_fdb_update(struct net_bridge *br,
+ struct net_bridge_port *source,
+ struct sk_buff *skb);
/* br_forward.c */
extern void br_deliver(const struct net_bridge_port *to,
projects / people / ssmith / nc2-2.6.27.bak / .git / commitdiff