Re: [PATCH 2/4 v3] bonding: make sure tx and rx hash tables stay in sync when using alb mode

Andy Gospodarek
2009-09-29T00:13:32Z

On Mon, Sep 28, 2009 at 03:09:54PM -0700, Jay Vosburgh wrote:
> Andy Gospodarek <andy@greyhouse.net> wrote:
>
> >On Fri, Sep 18, 2009 at 11:56:45AM -0400, Andy Gospodarek wrote:
> >> On Fri, Sep 18, 2009 at 11:36:22AM -0400, Andy Gospodarek wrote:
> >> > On Wed, Sep 16, 2009 at 04:36:09PM -0700, Jay Vosburgh wrote:
> >> > > Andy Gospodarek <andy@greyhouse.net> wrote:
> >> > >
> >> > > >
> >> > > >Subject: [PATCH] bonding: make sure tx and rx hash tables stay in sync when using alb mode
> >> > >
> >> > > When testing this, I'm getting a lockdep warning. It appears to
> >> > > be unhappy that tlb_choose_channel acquires the tx / rx hash table locks
> >> > > in the order tx then rx, but rlb_choose_channel -> alb_get_best_slave
> >> > > acquires the locks in the other order. I applied all four patches, but
> >> > > it looks like the change that trips lockdep is in this patch (#2).
> >> > >
> >> > > I haven't gotten an actual deadlock from this, although it seems
> >> > > plausible if there are two cpus in bond_alb_xmit at the same time, and
> >> > > one of them is sending an ARP.
> >> > >
> >> > > One fairly straightforward fix would be to combine the rx and tx
> >> > > hash table locks into a single lock. I suspect that wouldn't have any
> >> > > real performance penalty, since the rx hash table lock is generally not
> >> > > acquired very often (unlike the tx lock, which is taken for every packet
> >> > > that goes out).
> >> > >
> >> > > Also, FYI, two of the four patches had trailing whitespace. I
> >> > > believe it was #2 and #4.
> >> > >
> >> > > Thoughts?
> >> >
> >> > Jay,
> >> >
> >> > This patch should address both the the deadlock and whitespace conerns.
> >> > I ran a kernel with LOCKDEP enabled and saw no warnings while passing
> >> > traffic on the bond while pulling cables and while removing the module.
> >> > Here it is....
> >> >
> >>
> >> Adding the version and signed-off-by lines might be nice, eh?
> >>
> >> [PATCH v3] bonding: make sure tx and rx hash tables stay in sync when using alb mode
> >>
> >> I noticed that it was easy for alb (mode 6) bonding to get into a state
> >> where the tx hash-table and rx hash-table are out of sync (there is
> >> really nothing to keep them synchronized), and we will transmit traffic
> >> destined for a host on one slave and send ARP frames to the same slave
> >> from another interface using a different source MAC.
> >>
> >> There is no compelling reason to do this, so this patch makes sure the
> >> rx hash-table changes whenever the tx hash-table is updated based on
> >> device load. This patch also drops the code that does rlb re-balancing
> >> since the balancing will not be controlled by the tx hash-table based on
>
> In addition to my response in the other thread, I changed the
> "not" above to "now," which I suspect is what you meant.
>

You are correct. Thanks for catching that!

> >> transmit load. In order to address an issue found with the initial
> >> patch, I have also combined the rx and tx hash table lock into a single
> >> lock. This will facilitate moving these into a single table at some
> >> point.
> >>
> >> Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
> >>
> >> ---
> >> drivers/net/bonding/bond_alb.c | 203 +++++++++++++++-------------------------
> >> drivers/net/bonding/bond_alb.h | 3 +-
> >> 2 files changed, 75 insertions(+), 131 deletions(-)
> >>
> >> diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
> >> index bcf25c6..04b7055 100644
> >> --- a/drivers/net/bonding/bond_alb.c
> >> +++ b/drivers/net/bonding/bond_alb.c
> >> @@ -111,6 +111,7 @@ static inline struct arp_pkt *arp_pkt(const struct sk_buff *skb)
> >>
> >> /* Forward declaration */
> >> static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]);
> >> +static struct slave *alb_get_best_slave(struct bonding *bond, u32 hash_index);
> >>
> >> static inline u8 _simple_hash(const u8 *hash_start, int hash_size)
> >> {
> >> @@ -124,18 +125,18 @@ static inline u8 _simple_hash(const u8 *hash_start, int hash_size)
> >> return hash;
> >> }
> >>
> >> -/*********************** tlb specific functions ***************************/
> >> -
> >> -static inline void _lock_tx_hashtbl(struct bonding *bond)
> >> +/********************* hash table lock functions *************************/
> >> +static inline void _lock_hashtbl(struct bonding *bond)
> >> {
> >> - spin_lock_bh(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
> >> + spin_lock_bh(&(BOND_ALB_INFO(bond).hashtbl_lock));
> >> }
> >>
> >> -static inline void _unlock_tx_hashtbl(struct bonding *bond)
> >> +static inline void _unlock_hashtbl(struct bonding *bond)
> >> {
> >> - spin_unlock_bh(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
> >> + spin_unlock_bh(&(BOND_ALB_INFO(bond).hashtbl_lock));
> >> }
> >>
> >> +/*********************** tlb specific functions ***************************/
> >> /* Caller must hold tx_hashtbl lock */
> >> static inline void tlb_init_table_entry(struct tlb_client_info *entry, int save_load)
> >> {
> >> @@ -163,7 +164,7 @@ static void tlb_clear_slave(struct bonding *bond, struct slave *slave, int save_
> >> struct tlb_client_info *tx_hash_table;
> >> u32 index;
> >>
> >> - _lock_tx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> /* clear slave from tx_hashtbl */
> >> tx_hash_table = BOND_ALB_INFO(bond).tx_hashtbl;
> >> @@ -180,7 +181,7 @@ static void tlb_clear_slave(struct bonding *bond, struct slave *slave, int save_
> >>
> >> tlb_init_slave(slave);
> >>
> >> - _unlock_tx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> /* Must be called before starting the monitor timer */
> >> @@ -191,7 +192,7 @@ static int tlb_initialize(struct bonding *bond)
> >> struct tlb_client_info *new_hashtbl;
> >> int i;
> >>
> >> - spin_lock_init(&(bond_info->tx_hashtbl_lock));
> >> + spin_lock_init(&(bond_info->hashtbl_lock));
> >>
> >> new_hashtbl = kzalloc(size, GFP_KERNEL);
> >> if (!new_hashtbl) {
> >> @@ -200,7 +201,7 @@ static int tlb_initialize(struct bonding *bond)
> >> bond->dev->name);
> >> return -1;
> >> }
> >> - _lock_tx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> bond_info->tx_hashtbl = new_hashtbl;
> >>
> >> @@ -208,7 +209,7 @@ static int tlb_initialize(struct bonding *bond)
> >> tlb_init_table_entry(&bond_info->tx_hashtbl[i], 1);
> >> }
> >>
> >> - _unlock_tx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >>
> >> return 0;
> >> }
> >> @@ -218,12 +219,12 @@ static void tlb_deinitialize(struct bonding *bond)
> >> {
> >> struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
> >>
> >> - _lock_tx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> kfree(bond_info->tx_hashtbl);
> >> bond_info->tx_hashtbl = NULL;
> >>
> >> - _unlock_tx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> /* Caller must hold bond lock for read */
> >> @@ -264,24 +265,6 @@ static struct slave *tlb_get_least_loaded_slave(struct bonding *bond)
> >> return least_loaded;
> >> }
> >>
> >> -/* Caller must hold bond lock for read and hashtbl lock */
> >> -static struct slave *tlb_get_best_slave(struct bonding *bond, u32 hash_index)
> >> -{
> >> - struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
> >> - struct tlb_client_info *tx_hash_table = bond_info->tx_hashtbl;
> >> - struct slave *last_slave = tx_hash_table[hash_index].last_slave;
> >> - struct slave *next_slave = NULL;
> >> -
> >> - if (last_slave && SLAVE_IS_OK(last_slave)) {
> >> - /* Use the last slave listed in the tx hashtbl if:
> >> - the last slave currently is essentially unloaded. */
> >> - if (SLAVE_TLB_INFO(last_slave).load < 10)
> >> - next_slave = last_slave;
> >> - }
> >> -
> >> - return next_slave ? next_slave : tlb_get_least_loaded_slave(bond);
> >> -}
> >> -
> >> /* Caller must hold bond lock for read */
> >> static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, u32 skb_len)
> >> {
> >> @@ -289,13 +272,12 @@ static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, u3
> >> struct tlb_client_info *hash_table;
> >> struct slave *assigned_slave;
> >>
> >> - _lock_tx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> hash_table = bond_info->tx_hashtbl;
> >> assigned_slave = hash_table[hash_index].tx_slave;
> >> if (!assigned_slave) {
> >> - assigned_slave = tlb_get_best_slave(bond, hash_index);
> >> -
> >> + assigned_slave = alb_get_best_slave(bond, hash_index);
> >> if (assigned_slave) {
> >> struct tlb_slave_info *slave_info =
> >> &(SLAVE_TLB_INFO(assigned_slave));
> >> @@ -319,20 +301,52 @@ static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, u3
> >> hash_table[hash_index].tx_bytes += skb_len;
> >> }
> >>
> >> - _unlock_tx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >>
> >> return assigned_slave;
> >> }
> >>
> >> /*********************** rlb specific functions ***************************/
> >> -static inline void _lock_rx_hashtbl(struct bonding *bond)
> >> +
> >> +/* Caller must hold bond lock for read and hashtbl lock */
> >> +static struct slave *rlb_update_rx_table(struct bonding *bond, struct slave *next_slave, u32 hash_index)
> >> {
> >> - spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
> >> + struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
> >> +
> >> + /* check rlb table and correct it if wrong */
> >> + if (bond_info->rlb_enabled) {
> >> + struct rlb_client_info *rx_client_info = &(bond_info->rx_hashtbl[hash_index]);
> >> +
> >> + /* if the new slave computed by tlb checks doesn't match rlb, stop rlb from using it */
> >> + if (next_slave && (next_slave != rx_client_info->slave))
> >> + rx_client_info->slave = next_slave;
> >> + }
> >> + return next_slave;
> >> }
> >>
> >> -static inline void _unlock_rx_hashtbl(struct bonding *bond)
> >> +/* Caller must hold bond lock for read and hashtbl lock */
> >> +static struct slave *alb_get_best_slave(struct bonding *bond, u32 hash_index)
> >> {
> >> - spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
> >> + struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
> >> + struct tlb_client_info *tx_hash_table = bond_info->tx_hashtbl;
> >> + struct slave *last_slave = tx_hash_table[hash_index].last_slave;
> >> + struct slave *next_slave = NULL;
> >> +
> >> + /* presume the next slave will be the least loaded one */
> >> + next_slave = tlb_get_least_loaded_slave(bond);
> >> +
> >> + if (last_slave && SLAVE_IS_OK(last_slave)) {
> >> + /* Use the last slave listed in the tx hashtbl if:
> >> + the last slave currently is essentially unloaded. */
> >> + if (SLAVE_TLB_INFO(last_slave).load < 10)
> >> + next_slave = last_slave;
> >> + }
> >> +
> >> + /* update the rlb hashtbl if there was a previous entry */
> >> + if (bond_info->rlb_enabled)
> >> + rlb_update_rx_table(bond, next_slave, hash_index);
> >> +
> >> + return next_slave;
> >> }
> >>
> >> /* when an ARP REPLY is received from a client update its info
> >> @@ -344,7 +358,7 @@ static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp)
> >> struct rlb_client_info *client_info;
> >> u32 hash_index;
> >>
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> hash_index = _simple_hash((u8*)&(arp->ip_src), sizeof(arp->ip_src));
> >> client_info = &(bond_info->rx_hashtbl[hash_index]);
> >> @@ -358,7 +372,7 @@ static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp)
> >> bond_info->rx_ntt = 1;
> >> }
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> static int rlb_arp_recv(struct sk_buff *skb, struct net_device *bond_dev, struct packet_type *ptype, struct net_device *orig_dev)
> >> @@ -402,38 +416,6 @@ out:
> >> return res;
> >> }
> >>
> >> -/* Caller must hold bond lock for read */
> >> -static struct slave *rlb_next_rx_slave(struct bonding *bond)
> >> -{
> >> - struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
> >> - struct slave *rx_slave, *slave, *start_at;
> >> - int i = 0;
> >> -
> >> - if (bond_info->next_rx_slave) {
> >> - start_at = bond_info->next_rx_slave;
> >> - } else {
> >> - start_at = bond->first_slave;
> >> - }
> >> -
> >> - rx_slave = NULL;
> >> -
> >> - bond_for_each_slave_from(bond, slave, i, start_at) {
> >> - if (SLAVE_IS_OK(slave)) {
> >> - if (!rx_slave) {
> >> - rx_slave = slave;
> >> - } else if (slave->speed > rx_slave->speed) {
> >> - rx_slave = slave;
> >> - }
> >> - }
> >> - }
> >> -
> >> - if (rx_slave) {
> >> - bond_info->next_rx_slave = rx_slave->next;
> >> - }
> >> -
> >> - return rx_slave;
> >> -}
> >> -
> >> /* teach the switch the mac of a disabled slave
> >> * on the primary for fault tolerance
> >> *
> >> @@ -468,14 +450,14 @@ static void rlb_clear_slave(struct bonding *bond, struct slave *slave)
> >> u32 index, next_index;
> >>
> >> /* clear slave from rx_hashtbl */
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> rx_hash_table = bond_info->rx_hashtbl;
> >> index = bond_info->rx_hashtbl_head;
> >> for (; index != RLB_NULL_INDEX; index = next_index) {
> >> next_index = rx_hash_table[index].next;
> >> if (rx_hash_table[index].slave == slave) {
> >> - struct slave *assigned_slave = rlb_next_rx_slave(bond);
> >> + struct slave *assigned_slave = alb_get_best_slave(bond, index);
> >>
> >> if (assigned_slave) {
> >> rx_hash_table[index].slave = assigned_slave;
> >> @@ -499,7 +481,7 @@ static void rlb_clear_slave(struct bonding *bond, struct slave *slave)
> >> }
> >> }
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >>
> >> write_lock_bh(&bond->curr_slave_lock);
> >>
> >> @@ -558,7 +540,7 @@ static void rlb_update_rx_clients(struct bonding *bond)
> >> struct rlb_client_info *client_info;
> >> u32 hash_index;
> >>
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> hash_index = bond_info->rx_hashtbl_head;
> >> for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
> >> @@ -576,7 +558,7 @@ static void rlb_update_rx_clients(struct bonding *bond)
> >> */
> >> bond_info->rlb_update_delay_counter = RLB_UPDATE_DELAY;
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> /* The slave was assigned a new mac address - update the clients */
> >> @@ -587,7 +569,7 @@ static void rlb_req_update_slave_clients(struct bonding *bond, struct slave *sla
> >> int ntt = 0;
> >> u32 hash_index;
> >>
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> hash_index = bond_info->rx_hashtbl_head;
> >> for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
> >> @@ -607,7 +589,7 @@ static void rlb_req_update_slave_clients(struct bonding *bond, struct slave *sla
> >> bond_info->rlb_update_retry_counter = RLB_UPDATE_RETRY;
> >> }
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> /* mark all clients using src_ip to be updated */
> >> @@ -617,7 +599,7 @@ static void rlb_req_update_subnet_clients(struct bonding *bond, __be32 src_ip)
> >> struct rlb_client_info *client_info;
> >> u32 hash_index;
> >>
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> hash_index = bond_info->rx_hashtbl_head;
> >> for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
> >> @@ -643,7 +625,7 @@ static void rlb_req_update_subnet_clients(struct bonding *bond, __be32 src_ip)
> >> }
> >> }
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> /* Caller must hold both bond and ptr locks for read */
> >> @@ -655,7 +637,7 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
> >> struct rlb_client_info *client_info;
> >> u32 hash_index = 0;
> >>
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> hash_index = _simple_hash((u8 *)&arp->ip_dst, sizeof(arp->ip_src));
> >> client_info = &(bond_info->rx_hashtbl[hash_index]);
> >> @@ -671,7 +653,7 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
> >>
> >> assigned_slave = client_info->slave;
> >> if (assigned_slave) {
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> return assigned_slave;
> >> }
> >> } else {
> >> @@ -687,7 +669,7 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
> >> }
> >> }
> >> /* assign a new slave */
> >> - assigned_slave = rlb_next_rx_slave(bond);
> >> + assigned_slave = alb_get_best_slave(bond, hash_index);
> >>
> >> if (assigned_slave) {
> >> client_info->ip_src = arp->ip_src;
> >> @@ -723,7 +705,7 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
> >> }
> >> }
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >>
> >> return assigned_slave;
> >> }
> >> @@ -771,36 +753,6 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
> >> return tx_slave;
> >> }
> >>
> >> -/* Caller must hold bond lock for read */
> >> -static void rlb_rebalance(struct bonding *bond)
> >> -{
> >> - struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
> >> - struct slave *assigned_slave;
> >> - struct rlb_client_info *client_info;
> >> - int ntt;
> >> - u32 hash_index;
> >> -
> >> - _lock_rx_hashtbl(bond);
> >> -
> >> - ntt = 0;
> >> - hash_index = bond_info->rx_hashtbl_head;
> >> - for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
> >> - client_info = &(bond_info->rx_hashtbl[hash_index]);
> >> - assigned_slave = rlb_next_rx_slave(bond);
> >> - if (assigned_slave && (client_info->slave != assigned_slave)) {
> >> - client_info->slave = assigned_slave;
> >> - client_info->ntt = 1;
> >> - ntt = 1;
> >> - }
> >> - }
> >> -
> >> - /* update the team's flag only after the whole iteration */
> >> - if (ntt) {
> >> - bond_info->rx_ntt = 1;
> >> - }
> >> - _unlock_rx_hashtbl(bond);
> >> -}
> >> -
> >> /* Caller must hold rx_hashtbl lock */
> >> static void rlb_init_table_entry(struct rlb_client_info *entry)
> >> {
> >> @@ -817,8 +769,6 @@ static int rlb_initialize(struct bonding *bond)
> >> int size = RLB_HASH_TABLE_SIZE * sizeof(struct rlb_client_info);
> >> int i;
> >>
> >> - spin_lock_init(&(bond_info->rx_hashtbl_lock));
> >> -
> >> new_hashtbl = kmalloc(size, GFP_KERNEL);
> >> if (!new_hashtbl) {
> >> printk(KERN_ERR DRV_NAME
> >> @@ -826,7 +776,7 @@ static int rlb_initialize(struct bonding *bond)
> >> bond->dev->name);
> >> return -1;
> >> }
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> bond_info->rx_hashtbl = new_hashtbl;
> >>
> >> @@ -836,7 +786,7 @@ static int rlb_initialize(struct bonding *bond)
> >> rlb_init_table_entry(bond_info->rx_hashtbl + i);
> >> }
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >>
> >> /*initialize packet type*/
> >> pk_type->type = cpu_to_be16(ETH_P_ARP);
> >> @@ -855,13 +805,13 @@ static void rlb_deinitialize(struct bonding *bond)
> >>
> >> dev_remove_pack(&(bond_info->rlb_pkt_type));
> >>
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> kfree(bond_info->rx_hashtbl);
> >> bond_info->rx_hashtbl = NULL;
> >> bond_info->rx_hashtbl_head = RLB_NULL_INDEX;
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
> >> @@ -869,7 +819,7 @@ static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
> >> struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
> >> u32 curr_index;
> >>
> >> - _lock_rx_hashtbl(bond);
> >> + _lock_hashtbl(bond);
> >>
> >> curr_index = bond_info->rx_hashtbl_head;
> >> while (curr_index != RLB_NULL_INDEX) {
> >> @@ -894,7 +844,7 @@ static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
> >> curr_index = next_index;
> >> }
> >>
> >> - _unlock_rx_hashtbl(bond);
> >> + _unlock_hashtbl(bond);
> >> }
> >>
> >> /*********************** tlb/rlb shared functions *********************/
> >> @@ -1521,11 +1471,6 @@ void bond_alb_monitor(struct work_struct *work)
> >> read_lock(&bond->lock);
> >> }
> >>
> >> - if (bond_info->rlb_rebalance) {
> >> - bond_info->rlb_rebalance = 0;
> >> - rlb_rebalance(bond);
> >> - }
> >> -
> >> /* check if clients need updating */
> >> if (bond_info->rx_ntt) {
> >> if (bond_info->rlb_update_delay_counter) {
> >> diff --git a/drivers/net/bonding/bond_alb.h b/drivers/net/bonding/bond_alb.h
> >> index b65fd29..09d755a 100644
> >> --- a/drivers/net/bonding/bond_alb.h
> >> +++ b/drivers/net/bonding/bond_alb.h
> >> @@ -90,7 +90,7 @@ struct tlb_slave_info {
> >> struct alb_bond_info {
> >> struct timer_list alb_timer;
> >> struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */
> >> - spinlock_t tx_hashtbl_lock;
> >> + spinlock_t hashtbl_lock; /* lock for both tables */
> >> u32 unbalanced_load;
> >> int tx_rebalance_counter;
> >> int lp_counter;
> >> @@ -98,7 +98,6 @@ struct alb_bond_info {
> >> int rlb_enabled;
> >> struct packet_type rlb_pkt_type;
> >> struct rlb_client_info *rx_hashtbl; /* Receive hash table */
> >> - spinlock_t rx_hashtbl_lock;
> >> u32 rx_hashtbl_head;
> >> u8 rx_ntt; /* flag - need to transmit
> >> * to all rx clients
> >
> >Any thoughts on this, Jay?
>
> -J
>
> ---
> -Jay Vosburgh, IBM Linux Technology Center, fubar@us.ibm.com
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