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authorVlad Yasevich <vyasevic@redhat.com>2014-06-04 16:23:38 -0400
committerDavid S. Miller <davem@davemloft.net>2014-06-04 15:13:54 -0700
commit14af9963ba1e5e8400c9de9267bdcab895109f6a (patch)
tree55e2be9506708df787f2158e11454b8ac2b7c36a /drivers/net/bonding
parent4c9912556867bf89e7bb6946fd218a40b1d12139 (diff)
downloadop-kernel-dev-14af9963ba1e5e8400c9de9267bdcab895109f6a.zip
op-kernel-dev-14af9963ba1e5e8400c9de9267bdcab895109f6a.tar.gz
bonding: Support macvlans on top of tlb/rlb mode bonds
To make TLB mode work, the patch allows learning packets to be sent using mac addresses assigned to macvlan devices, also taking into an account vlans that may be between the bond and macvlan device. To make RLB work, all we have to do is accept ARP packets for addresses added to the bond dev->uc list. Since RLB mode will take care to update the peers directly with correct mac addresses, learning packets for these addresses do not have be send to switch. Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding')
-rw-r--r--drivers/net/bonding/bond_alb.c21
-rw-r--r--drivers/net/bonding/bond_main.c6
-rw-r--r--drivers/net/bonding/bonding.h24
3 files changed, 45 insertions, 6 deletions
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index 7bbbf1c..76c0dad 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -755,7 +755,7 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
/* Don't modify or load balance ARPs that do not originate locally
* (e.g.,arrive via a bridge).
*/
- if (!bond_slave_has_mac_rcu(bond, arp->mac_src))
+ if (!bond_slave_has_mac_rx(bond, arp->mac_src))
return NULL;
if (arp->op_code == htons(ARPOP_REPLY)) {
@@ -1039,11 +1039,14 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[],
struct bonding *bond = bond_get_bond_by_slave(slave);
struct net_device *upper;
struct list_head *iter;
+ struct bond_vlan_tag tags[BOND_MAX_VLAN_ENCAP];
/* send untagged */
alb_send_lp_vid(slave, mac_addr, 0, 0);
- /* loop through vlans and send one packet for each */
+ /* loop through all devices and see if we need to send a packet
+ * for that device.
+ */
rcu_read_lock();
netdev_for_each_all_upper_dev_rcu(bond->dev, upper, iter) {
if (is_vlan_dev(upper) && vlan_get_encap_level(upper) == 0) {
@@ -1059,6 +1062,16 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[],
vlan_dev_vlan_id(upper));
}
}
+
+ /* If this is a macvlan device, then only send updates
+ * when strict_match is turned off.
+ */
+ if (netif_is_macvlan(upper) && !strict_match) {
+ memset(tags, 0, sizeof(tags));
+ bond_verify_device_path(bond->dev, upper, tags);
+ alb_send_lp_vid(slave, upper->dev_addr,
+ tags[0].vlan_proto, tags[0].vlan_id);
+ }
}
rcu_read_unlock();
}
@@ -1560,8 +1573,10 @@ void bond_alb_monitor(struct work_struct *work)
/* If updating current_active, use all currently
* user mac addreses (!strict_match). Otherwise, only
* use mac of the slave device.
+ * In RLB mode, we always use strict matches.
*/
- strict_match = (slave != bond->curr_active_slave);
+ strict_match = (slave != bond->curr_active_slave ||
+ bond_info->rlb_enabled);
alb_send_learning_packets(slave, slave->dev->dev_addr,
strict_match);
}
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index a89bf18..04f35f9 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2206,9 +2206,9 @@ static void bond_arp_send(struct net_device *slave_dev, int arp_op,
* When the path is validated, collect any vlan information in the
* path.
*/
-static bool bond_verify_device_path(struct net_device *start_dev,
- struct net_device *end_dev,
- struct bond_vlan_tag *tags)
+bool bond_verify_device_path(struct net_device *start_dev,
+ struct net_device *end_dev,
+ struct bond_vlan_tag *tags)
{
struct net_device *upper;
struct list_head *iter;
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index ea64aa2..0b4d9cd 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -516,6 +516,9 @@ void bond_netlink_fini(void);
struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
struct net_device *bond_option_active_slave_get(struct bonding *bond);
const char *bond_slave_link_status(s8 link);
+bool bond_verify_device_path(struct net_device *start_dev,
+ struct net_device *end_dev,
+ struct bond_vlan_tag *tags);
#ifdef CONFIG_PROC_FS
void bond_create_proc_entry(struct bonding *bond);
@@ -567,6 +570,27 @@ static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond,
return NULL;
}
+/* Caller must hold rcu_read_lock() for read */
+static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac)
+{
+ struct list_head *iter;
+ struct slave *tmp;
+ struct netdev_hw_addr *ha;
+
+ bond_for_each_slave_rcu(bond, tmp, iter)
+ if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
+ return true;
+
+ if (netdev_uc_empty(bond->dev))
+ return false;
+
+ netdev_for_each_uc_addr(ha, bond->dev)
+ if (ether_addr_equal_64bits(mac, ha->addr))
+ return true;
+
+ return false;
+}
+
/* Check if the ip is present in arp ip list, or first free slot if ip == 0
* Returns -1 if not found, index if found
*/
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