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bond_alb: don't disable softirq under bond_alb_xmit
No need to lock soft irqs under bond_alb_xmit() which already has softirq disabled. Changes: 1. add non-bh/bh version to tlb_clear_slave() 2. represent BH and non BH hash table locks _lock_rx_hashtbl_bh/_unlock_rx_hashtbl_bh _lock_rx_hashtbl/_unlock_rx_hashtbl _lock_tx_hashtbl_bh/_unlock_tx_hashtbl_bh _lock_tx_hashtbl/_unlock_tx_hashtbl Signed-off-by: Maxim Uvarov <maxim.uvarov@oracle.com> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maxim Uvarov
David S. Miller
parent
d6c25beba3
commit
f515e6b770
@ -99,16 +99,26 @@ static inline u8 _simple_hash(const u8 *hash_start, int hash_size)
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/*********************** tlb specific functions ***************************/
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static inline void _lock_tx_hashtbl(struct bonding *bond)
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static inline void _lock_tx_hashtbl_bh(struct bonding *bond)
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{
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spin_lock_bh(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
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}
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static inline void _unlock_tx_hashtbl(struct bonding *bond)
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static inline void _unlock_tx_hashtbl_bh(struct bonding *bond)
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{
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spin_unlock_bh(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
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}
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static inline void _lock_tx_hashtbl(struct bonding *bond)
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{
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spin_lock(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
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}
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static inline void _unlock_tx_hashtbl(struct bonding *bond)
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{
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spin_unlock(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
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}
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/* Caller must hold tx_hashtbl lock */
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static inline void tlb_init_table_entry(struct tlb_client_info *entry, int save_load)
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{
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@ -129,14 +139,13 @@ static inline void tlb_init_slave(struct slave *slave)
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SLAVE_TLB_INFO(slave).head = TLB_NULL_INDEX;
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}
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/* Caller must hold bond lock for read */
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static void tlb_clear_slave(struct bonding *bond, struct slave *slave, int save_load)
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/* Caller must hold bond lock for read, BH disabled */
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static void __tlb_clear_slave(struct bonding *bond, struct slave *slave,
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int save_load)
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{
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struct tlb_client_info *tx_hash_table;
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u32 index;
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_lock_tx_hashtbl(bond);
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/* clear slave from tx_hashtbl */
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tx_hash_table = BOND_ALB_INFO(bond).tx_hashtbl;
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@ -151,8 +160,15 @@ static void tlb_clear_slave(struct bonding *bond, struct slave *slave, int save_
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}
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tlb_init_slave(slave);
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}
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_unlock_tx_hashtbl(bond);
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/* Caller must hold bond lock for read */
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static void tlb_clear_slave(struct bonding *bond, struct slave *slave,
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int save_load)
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{
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_lock_tx_hashtbl_bh(bond);
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__tlb_clear_slave(bond, slave, save_load);
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_unlock_tx_hashtbl_bh(bond);
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}
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/* Must be called before starting the monitor timer */
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@ -169,7 +185,7 @@ static int tlb_initialize(struct bonding *bond)
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bond->dev->name);
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return -1;
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}
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_lock_tx_hashtbl(bond);
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_lock_tx_hashtbl_bh(bond);
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bond_info->tx_hashtbl = new_hashtbl;
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@ -177,7 +193,7 @@ static int tlb_initialize(struct bonding *bond)
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tlb_init_table_entry(&bond_info->tx_hashtbl[i], 0);
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}
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_unlock_tx_hashtbl(bond);
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_unlock_tx_hashtbl_bh(bond);
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return 0;
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}
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@ -187,12 +203,12 @@ static void tlb_deinitialize(struct bonding *bond)
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{
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struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
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_lock_tx_hashtbl(bond);
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_lock_tx_hashtbl_bh(bond);
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kfree(bond_info->tx_hashtbl);
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bond_info->tx_hashtbl = NULL;
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_unlock_tx_hashtbl(bond);
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_unlock_tx_hashtbl_bh(bond);
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}
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static long long compute_gap(struct slave *slave)
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@ -226,15 +242,13 @@ static struct slave *tlb_get_least_loaded_slave(struct bonding *bond)
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return least_loaded;
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}
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/* Caller must hold bond lock for read */
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static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, u32 skb_len)
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static struct slave *__tlb_choose_channel(struct bonding *bond, u32 hash_index,
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u32 skb_len)
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{
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struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
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struct tlb_client_info *hash_table;
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struct slave *assigned_slave;
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_lock_tx_hashtbl(bond);
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hash_table = bond_info->tx_hashtbl;
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assigned_slave = hash_table[hash_index].tx_slave;
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if (!assigned_slave) {
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@ -263,22 +277,46 @@ static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, u3
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hash_table[hash_index].tx_bytes += skb_len;
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}
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_unlock_tx_hashtbl(bond);
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return assigned_slave;
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}
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/* Caller must hold bond lock for read */
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static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index,
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u32 skb_len)
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{
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struct slave *tx_slave;
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/*
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* We don't need to disable softirq here, becase
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* tlb_choose_channel() is only called by bond_alb_xmit()
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* which already has softirq disabled.
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*/
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_lock_tx_hashtbl(bond);
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tx_slave = __tlb_choose_channel(bond, hash_index, skb_len);
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_unlock_tx_hashtbl(bond);
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return tx_slave;
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}
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/*********************** rlb specific functions ***************************/
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static inline void _lock_rx_hashtbl(struct bonding *bond)
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static inline void _lock_rx_hashtbl_bh(struct bonding *bond)
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{
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spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
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}
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static inline void _unlock_rx_hashtbl(struct bonding *bond)
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static inline void _unlock_rx_hashtbl_bh(struct bonding *bond)
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{
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spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
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}
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static inline void _lock_rx_hashtbl(struct bonding *bond)
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{
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spin_lock(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
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}
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static inline void _unlock_rx_hashtbl(struct bonding *bond)
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{
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spin_unlock(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
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}
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/* when an ARP REPLY is received from a client update its info
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* in the rx_hashtbl
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*/
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@ -288,7 +326,7 @@ static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp)
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struct rlb_client_info *client_info;
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u32 hash_index;
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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hash_index = _simple_hash((u8*)&(arp->ip_src), sizeof(arp->ip_src));
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client_info = &(bond_info->rx_hashtbl[hash_index]);
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@ -303,7 +341,7 @@ static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp)
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bond_info->rx_ntt = 1;
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}
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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}
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static void rlb_arp_recv(struct sk_buff *skb, struct bonding *bond,
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@ -401,7 +439,7 @@ static void rlb_clear_slave(struct bonding *bond, struct slave *slave)
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u32 index, next_index;
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/* clear slave from rx_hashtbl */
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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rx_hash_table = bond_info->rx_hashtbl;
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index = bond_info->rx_hashtbl_head;
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@ -432,7 +470,7 @@ static void rlb_clear_slave(struct bonding *bond, struct slave *slave)
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}
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}
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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write_lock_bh(&bond->curr_slave_lock);
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@ -489,7 +527,7 @@ static void rlb_update_rx_clients(struct bonding *bond)
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struct rlb_client_info *client_info;
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u32 hash_index;
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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hash_index = bond_info->rx_hashtbl_head;
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for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
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@ -507,7 +545,7 @@ static void rlb_update_rx_clients(struct bonding *bond)
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*/
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bond_info->rlb_update_delay_counter = RLB_UPDATE_DELAY;
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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}
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/* The slave was assigned a new mac address - update the clients */
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@ -518,7 +556,7 @@ static void rlb_req_update_slave_clients(struct bonding *bond, struct slave *sla
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int ntt = 0;
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u32 hash_index;
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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hash_index = bond_info->rx_hashtbl_head;
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for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
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@ -538,7 +576,7 @@ static void rlb_req_update_slave_clients(struct bonding *bond, struct slave *sla
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bond_info->rlb_update_retry_counter = RLB_UPDATE_RETRY;
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}
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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}
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/* mark all clients using src_ip to be updated */
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@ -709,7 +747,7 @@ static void rlb_rebalance(struct bonding *bond)
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int ntt;
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u32 hash_index;
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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ntt = 0;
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hash_index = bond_info->rx_hashtbl_head;
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@ -727,7 +765,7 @@ static void rlb_rebalance(struct bonding *bond)
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if (ntt) {
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bond_info->rx_ntt = 1;
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}
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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}
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/* Caller must hold rx_hashtbl lock */
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@ -751,7 +789,7 @@ static int rlb_initialize(struct bonding *bond)
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bond->dev->name);
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return -1;
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}
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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bond_info->rx_hashtbl = new_hashtbl;
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@ -761,7 +799,7 @@ static int rlb_initialize(struct bonding *bond)
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rlb_init_table_entry(bond_info->rx_hashtbl + i);
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}
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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/* register to receive ARPs */
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bond->recv_probe = rlb_arp_recv;
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@ -773,13 +811,13 @@ static void rlb_deinitialize(struct bonding *bond)
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{
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struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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kfree(bond_info->rx_hashtbl);
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bond_info->rx_hashtbl = NULL;
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bond_info->rx_hashtbl_head = RLB_NULL_INDEX;
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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}
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static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
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@ -787,7 +825,7 @@ static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
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struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
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u32 curr_index;
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_lock_rx_hashtbl(bond);
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_lock_rx_hashtbl_bh(bond);
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curr_index = bond_info->rx_hashtbl_head;
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while (curr_index != RLB_NULL_INDEX) {
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@ -812,7 +850,7 @@ static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
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curr_index = next_index;
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}
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_unlock_rx_hashtbl(bond);
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_unlock_rx_hashtbl_bh(bond);
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}
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/*********************** tlb/rlb shared functions *********************/
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@ -1320,7 +1358,9 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
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res = bond_dev_queue_xmit(bond, skb, tx_slave->dev);
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} else {
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if (tx_slave) {
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tlb_clear_slave(bond, tx_slave, 0);
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_lock_tx_hashtbl(bond);
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__tlb_clear_slave(bond, tx_slave, 0);
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_unlock_tx_hashtbl(bond);
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}
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}
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