Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 181 insertions, 0 deletions

diff --git a/include/net/bond_alb.h b/include/net/bond_alb.h
new file mode 100644
index 000000000..3a6c932b6
--- /dev/null
+++ b/include/net/bond_alb.h
@@ -0,0 +1,181 @@
+/*
+ * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ */
+
+#ifndef _NET_BOND_ALB_H
+#define _NET_BOND_ALB_H
+
+#include <linux/if_ether.h>
+
+struct bonding;
+struct slave;
+
+#define BOND_ALB_INFO(bond)   ((bond)->alb_info)
+#define SLAVE_TLB_INFO(slave) ((slave)->tlb_info)
+
+#define ALB_TIMER_TICKS_PER_SEC	    10	/* should be a divisor of HZ */
+#define BOND_TLB_REBALANCE_INTERVAL 10	/* In seconds, periodic re-balancing.
+					 * Used for division - never set
+					 * to zero !!!
+					 */
+#define BOND_ALB_DEFAULT_LP_INTERVAL 1
+#define BOND_ALB_LP_INTERVAL(bond) (bond->params.lp_interval)	/* In seconds, periodic send of
+								 * learning packets to the switch
+								 */
+
+#define BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \
+				  * ALB_TIMER_TICKS_PER_SEC)
+
+#define BOND_ALB_LP_TICKS(bond) (BOND_ALB_LP_INTERVAL(bond) \
+			   * ALB_TIMER_TICKS_PER_SEC)
+
+#define TLB_HASH_TABLE_SIZE 256	/* The size of the clients hash table.
+				 * Note that this value MUST NOT be smaller
+				 * because the key hash table is BYTE wide !
+				 */
+
+
+#define TLB_NULL_INDEX		0xffffffff
+
+/* rlb defs */
+#define RLB_HASH_TABLE_SIZE	256
+#define RLB_NULL_INDEX		0xffffffff
+#define RLB_UPDATE_DELAY	(2*ALB_TIMER_TICKS_PER_SEC) /* 2 seconds */
+#define RLB_ARP_BURST_SIZE	2
+#define RLB_UPDATE_RETRY	3 /* 3-ticks - must be smaller than the rlb
+				   * rebalance interval (5 min).
+				   */
+/* RLB_PROMISC_TIMEOUT = 10 sec equals the time that the current slave is
+ * promiscuous after failover
+ */
+#define RLB_PROMISC_TIMEOUT	(10*ALB_TIMER_TICKS_PER_SEC)
+
+
+struct tlb_client_info {
+	struct slave *tx_slave;	/* A pointer to slave used for transmiting
+				 * packets to a Client that the Hash function
+				 * gave this entry index.
+				 */
+	u32 tx_bytes;		/* Each Client accumulates the BytesTx that
+				 * were transmitted to it, and after each
+				 * CallBack the LoadHistory is divided
+				 * by the balance interval
+				 */
+	u32 load_history;	/* This field contains the amount of Bytes
+				 * that were transmitted to this client by
+				 * the server on the previous balance
+				 * interval in Bps.
+				 */
+	u32 next;		/* The next Hash table entry index, assigned
+				 * to use the same adapter for transmit.
+				 */
+	u32 prev;		/* The previous Hash table entry index,
+				 * assigned to use the same
+				 */
+};
+
+/* -------------------------------------------------------------------------
+ * struct rlb_client_info contains all info related to a specific rx client
+ * connection. This is the Clients Hash Table entry struct.
+ * Note that this is not a proper hash table; if a new client's IP address
+ * hash collides with an existing client entry, the old entry is replaced.
+ *
+ * There is a linked list (linked by the used_next and used_prev members)
+ * linking all the used entries of the hash table. This allows updating
+ * all the clients without walking over all the unused elements of the table.
+ *
+ * There are also linked lists of entries with identical hash(ip_src). These
+ * allow cleaning up the table from ip_src<->mac_src associations that have
+ * become outdated and would cause sending out invalid ARP updates to the
+ * network. These are linked by the (src_next and src_prev members).
+ * -------------------------------------------------------------------------
+ */
+struct rlb_client_info {
+	__be32 ip_src;		/* the server IP address */
+	__be32 ip_dst;		/* the client IP address */
+	u8  mac_src[ETH_ALEN];	/* the server MAC address */
+	u8  mac_dst[ETH_ALEN];	/* the client MAC address */
+
+	/* list of used hash table entries, starting at rx_hashtbl_used_head */
+	u32 used_next;
+	u32 used_prev;
+
+	/* ip_src based hashing */
+	u32 src_next;	/* next entry with same hash(ip_src) */
+	u32 src_prev;	/* prev entry with same hash(ip_src) */
+	u32 src_first;	/* first entry with hash(ip_src) == this entry's index */
+
+	u8  assigned;		/* checking whether this entry is assigned */
+	u8  ntt;		/* flag - need to transmit client info */
+	struct slave *slave;	/* the slave assigned to this client */
+	unsigned short vlan_id;	/* VLAN tag associated with IP address */
+};
+
+struct tlb_slave_info {
+	u32 head;	/* Index to the head of the bi-directional clients
+			 * hash table entries list. The entries in the list
+			 * are the entries that were assigned to use this
+			 * slave for transmit.
+			 */
+	u32 load;	/* Each slave sums the loadHistory of all clients
+			 * assigned to it
+			 */
+};
+
+struct alb_bond_info {
+	struct tlb_client_info	*tx_hashtbl; /* Dynamically allocated */
+	u32			unbalanced_load;
+	atomic_t		tx_rebalance_counter;
+	int			lp_counter;
+	/* -------- rlb parameters -------- */
+	int rlb_enabled;
+	struct rlb_client_info	*rx_hashtbl;	/* Receive hash table */
+	u32			rx_hashtbl_used_head;
+	u8			rx_ntt;	/* flag - need to transmit
+					 * to all rx clients
+					 */
+	struct slave		*rx_slave;/* last slave to xmit from */
+	u8			primary_is_promisc;	   /* boolean */
+	u32			rlb_promisc_timeout_counter;/* counts primary
+							     * promiscuity time
+							     */
+	u32			rlb_update_delay_counter;
+	u32			rlb_update_retry_counter;/* counter of retries
+							  * of client update
+							  */
+	u8			rlb_rebalance;	/* flag - indicates that the
+						 * rx traffic should be
+						 * rebalanced
+						 */
+};
+
+int bond_alb_initialize(struct bonding *bond, int rlb_enabled);
+void bond_alb_deinitialize(struct bonding *bond);
+int bond_alb_init_slave(struct bonding *bond, struct slave *slave);
+void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave);
+void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link);
+void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave);
+int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev);
+int bond_tlb_xmit(struct sk_buff *skb, struct net_device *bond_dev);
+void bond_alb_monitor(struct work_struct *);
+int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr);
+void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id);
+#endif /* _NET_BOND_ALB_H */
+