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@@ -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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+
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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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+
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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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-
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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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-
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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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-
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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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+
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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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+
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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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+
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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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