void *aux; /* Client-provided handle for this slave. */
struct netdev *netdev; /* Network device, owned by the client. */
+ unsigned int change_seq; /* Tracks changes in 'netdev'. */
char *name; /* Name (a copy of netdev_get_name(netdev)). */
/* Link status. */
long long delay_expires; /* Time after which 'enabled' may change. */
bool enabled; /* May be chosen for flows? */
- bool lacp_may_enable; /* LACP considers this interface bondable. */
+ bool may_enable; /* Client considers this slave bondable. */
tag_type tag; /* Tag associated with this slave. */
/* Rebalancing info. Used only by bond_rebalance(). */
/* BM_STABLE specific bonding info. */
tag_type stb_tag; /* Tag associated with this bond. */
- /* Monitoring. */
- struct netdev_monitor *monitor; /* detect == BLSM_CARRIER only. */
-
/* Legacy compatibility. */
long long int next_fake_iface_update; /* LLONG_MAX if disabled. */
bond->no_slaves_tag = tag_create_random();
bond->stb_tag = tag_create_random();
bond->next_fake_iface_update = LLONG_MAX;
- bond->monitor = netdev_monitor_create();
bond_reconfigure(bond, s);
hmap_destroy(&bond->slaves);
free(bond->hash);
-
- netdev_monitor_destroy(bond->monitor);
-
free(bond->name);
free(bond);
}
}
static void
-bond_slave_set_netdev__(struct bond *bond, struct bond_slave *slave,
- struct netdev *netdev)
+bond_slave_set_netdev__(struct bond_slave *slave, struct netdev *netdev)
{
if (slave->netdev != netdev) {
- if (slave->netdev) {
- netdev_monitor_remove(bond->monitor, slave->netdev);
- }
- netdev_monitor_add(bond->monitor, netdev);
slave->netdev = netdev;
+ slave->change_seq = 0;
}
}
bond->bond_revalidate = true;
}
- bond_slave_set_netdev__(bond, slave, netdev);
+ bond_slave_set_netdev__(slave, netdev);
free(slave->name);
slave->name = xstrdup(netdev_get_name(netdev));
{
struct bond_slave *slave = bond_slave_lookup(bond, slave_);
if (slave) {
- bond_slave_set_netdev__(bond, slave, netdev);
+ bond_slave_set_netdev__(slave, netdev);
}
}
return;
}
- netdev_monitor_remove(bond->monitor, slave->netdev);
bond_enable_slave(slave, false, NULL);
del_active = bond->active_slave == slave;
}
}
-/* Should be called on each slave in 'bond' before bond_run() to indicate the
- * results of lacp_slave_may_enable() on 'slave_'. */
+/* Should be called on each slave in 'bond' before bond_run() to indicate
+ * whether or not 'slave_' may be enabled. This function is intended to allow
+ * other protocols to have some impact on bonding decisions. For example LACP
+ * or high level link monitoring protocols may decide that a given slave should
+ * not be able to send traffic. */
void
-bond_slave_set_lacp_may_enable(struct bond *bond, void *slave_,
- bool may_enable)
+bond_slave_set_may_enable(struct bond *bond, void *slave_, bool may_enable)
{
- bond_slave_lookup(bond, slave_)->lacp_may_enable = may_enable;
+ bond_slave_lookup(bond, slave_)->may_enable = may_enable;
}
/* Performs periodic maintenance on 'bond'. The caller must provide 'tags' to
bond->lacp_negotiated = lacp_negotiated;
- if (bond->monitor) {
- netdev_monitor_flush(bond->monitor);
- }
-
/* Enable slaves based on link status and LACP feedback. */
HMAP_FOR_EACH (slave, hmap_node, &bond->slaves) {
bond_link_status_update(slave, tags);
+ slave->change_seq = netdev_change_seq(slave->netdev);
}
if (!bond->active_slave || !bond->active_slave->enabled) {
bond_choose_active_slave(bond, tags);
{
struct bond_slave *slave;
- netdev_monitor_poll_wait(bond->monitor);
-
HMAP_FOR_EACH (slave, hmap_node, &bond->slaves) {
if (slave->delay_expires != LLONG_MAX) {
poll_timer_wait_until(slave->delay_expires);
}
+
+ if (slave->change_seq != netdev_change_seq(slave->netdev)) {
+ poll_immediate_wake();
+ }
}
if (bond->next_fake_iface_update != LLONG_MAX) {
bond_check_admissibility(struct bond *bond, const void *slave_,
const uint8_t eth_dst[ETH_ADDR_LEN], tag_type *tags)
{
- /* Admit all packets if LACP has been negotiated, because that means that
- * the remote switch is aware of the bond and will "do the right thing". */
+ struct bond_slave *slave = bond_slave_lookup(bond, slave_);
+
+ /* LACP bonds have very loose admissibility restrictions because we can
+ * assume the remote switch is aware of the bond and will "do the right
+ * thing". However, as a precaution we drop packets on disabled slaves
+ * because no correctly implemented partner switch should be sending
+ * packets to them. */
if (bond->lacp_negotiated) {
- return BV_ACCEPT;
+ return slave->enabled ? BV_ACCEPT : BV_DROP;
}
/* Drop all multicast packets on inactive slaves. */
}
}
+ /* Drop all packets which arrive on backup slaves. This is similar to how
+ * Linux bonding handles active-backup bonds. */
+ if (bond->balance == BM_AB) {
+ *tags |= bond_get_active_slave_tag(bond);
+ if (bond->active_slave != slave) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+
+ VLOG_WARN_RL(&rl, "active-backup bond received packet on backup"
+ " slave (%s) destined for " ETH_ADDR_FMT,
+ slave->name, ETH_ADDR_ARGS(eth_dst));
+ return BV_DROP;
+ }
+ }
+
/* Drop all packets for which we have learned a different input port,
* because we probably sent the packet on one slave and got it back on the
* other. Gratuitous ARP packets are an exception to this rule: the host
slave->delay_expires - time_msec());
}
- ds_put_format(&ds, "\tlacp_may_enable: %s\n",
- slave->lacp_may_enable ? "true" : "false");
+ ds_put_format(&ds, "\tmay_enable: %s\n",
+ slave->may_enable ? "true" : "false");
if (!bond_is_balanced(bond)) {
continue;
}
bond_enable_slave(slave, enable, &bond->unixctl_tags);
- unixctl_command_reply(conn, 501, enable ? "enabled" : "disabled");
+ unixctl_command_reply(conn, 200, enable ? "enabled" : "disabled");
}
static void
struct bond *bond = slave->bond;
bool up;
- up = netdev_get_carrier(slave->netdev) && slave->lacp_may_enable;
+ up = netdev_get_carrier(slave->netdev) && slave->may_enable;
if ((up == slave->enabled) != (slave->delay_expires == LLONG_MAX)) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
VLOG_INFO_RL(&rl, "interface %s: link state %s",
static bool
bond_is_tcp_hash(const struct bond *bond)
{
- return (bond->balance == BM_TCP || bond->balance == BM_STABLE)
- && bond->lacp_negotiated;
+ return (bond->balance == BM_TCP && bond->lacp_negotiated)
+ || bond->balance == BM_STABLE;
}
static unsigned int
best = NULL;
HMAP_FOR_EACH (slave, hmap_node, &bond->slaves) {
if (slave->delay_expires != LLONG_MAX
- && slave->lacp_may_enable
+ && slave->may_enable
&& (!best || slave->delay_expires < best->delay_expires)) {
best = slave;
}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff