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1/*
2 * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, see <http://www.gnu.org/licenses/>.
16 *
17 * The full GNU General Public License is included in this distribution in the
18 * file called LICENSE.
19 *
20 */
21
22#ifndef __BOND_ALB_H__
23#define __BOND_ALB_H__
24
25#include <linux/if_ether.h>
26
27struct bonding;
28struct slave;
29
30#define BOND_ALB_INFO(bond) ((bond)->alb_info)
31#define SLAVE_TLB_INFO(slave) ((slave)->tlb_info)
32
33#define ALB_TIMER_TICKS_PER_SEC 10 /* should be a divisor of HZ */
34#define BOND_TLB_REBALANCE_INTERVAL 10 /* In seconds, periodic re-balancing.
35 * Used for division - never set
36 * to zero !!!
37 */
38#define BOND_ALB_DEFAULT_LP_INTERVAL 1
39#define BOND_ALB_LP_INTERVAL(bond) (bond->params.lp_interval) /* In seconds, periodic send of
40 * learning packets to the switch
41 */
42
43#define BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \
44 * ALB_TIMER_TICKS_PER_SEC)
45
46#define BOND_ALB_LP_TICKS(bond) (BOND_ALB_LP_INTERVAL(bond) \
47 * ALB_TIMER_TICKS_PER_SEC)
48
49#define TLB_HASH_TABLE_SIZE 256 /* The size of the clients hash table.
50 * Note that this value MUST NOT be smaller
51 * because the key hash table is BYTE wide !
52 */
53
54
55#define TLB_NULL_INDEX 0xffffffff
56
57/* rlb defs */
58#define RLB_HASH_TABLE_SIZE 256
59#define RLB_NULL_INDEX 0xffffffff
60#define RLB_UPDATE_DELAY (2*ALB_TIMER_TICKS_PER_SEC) /* 2 seconds */
61#define RLB_ARP_BURST_SIZE 2
62#define RLB_UPDATE_RETRY 3 /* 3-ticks - must be smaller than the rlb
63 * rebalance interval (5 min).
64 */
65/* RLB_PROMISC_TIMEOUT = 10 sec equals the time that the current slave is
66 * promiscuous after failover
67 */
68#define RLB_PROMISC_TIMEOUT (10*ALB_TIMER_TICKS_PER_SEC)
69
70
71struct tlb_client_info {
72 struct slave *tx_slave; /* A pointer to slave used for transmiting
73 * packets to a Client that the Hash function
74 * gave this entry index.
75 */
76 u32 tx_bytes; /* Each Client accumulates the BytesTx that
77 * were transmitted to it, and after each
78 * CallBack the LoadHistory is divided
79 * by the balance interval
80 */
81 u32 load_history; /* This field contains the amount of Bytes
82 * that were transmitted to this client by
83 * the server on the previous balance
84 * interval in Bps.
85 */
86 u32 next; /* The next Hash table entry index, assigned
87 * to use the same adapter for transmit.
88 */
89 u32 prev; /* The previous Hash table entry index,
90 * assigned to use the same
91 */
92};
93
94/* -------------------------------------------------------------------------
95 * struct rlb_client_info contains all info related to a specific rx client
96 * connection. This is the Clients Hash Table entry struct.
97 * Note that this is not a proper hash table; if a new client's IP address
98 * hash collides with an existing client entry, the old entry is replaced.
99 *
100 * There is a linked list (linked by the used_next and used_prev members)
101 * linking all the used entries of the hash table. This allows updating
102 * all the clients without walking over all the unused elements of the table.
103 *
104 * There are also linked lists of entries with identical hash(ip_src). These
105 * allow cleaning up the table from ip_src<->mac_src associations that have
106 * become outdated and would cause sending out invalid ARP updates to the
107 * network. These are linked by the (src_next and src_prev members).
108 * -------------------------------------------------------------------------
109 */
110struct rlb_client_info {
111 __be32 ip_src; /* the server IP address */
112 __be32 ip_dst; /* the client IP address */
113 u8 mac_src[ETH_ALEN]; /* the server MAC address */
114 u8 mac_dst[ETH_ALEN]; /* the client MAC address */
115
116 /* list of used hash table entries, starting at rx_hashtbl_used_head */
117 u32 used_next;
118 u32 used_prev;
119
120 /* ip_src based hashing */
121 u32 src_next; /* next entry with same hash(ip_src) */
122 u32 src_prev; /* prev entry with same hash(ip_src) */
123 u32 src_first; /* first entry with hash(ip_src) == this entry's index */
124
125 u8 assigned; /* checking whether this entry is assigned */
126 u8 ntt; /* flag - need to transmit client info */
127 struct slave *slave; /* the slave assigned to this client */
128 unsigned short vlan_id; /* VLAN tag associated with IP address */
129};
130
131struct tlb_slave_info {
132 u32 head; /* Index to the head of the bi-directional clients
133 * hash table entries list. The entries in the list
134 * are the entries that were assigned to use this
135 * slave for transmit.
136 */
137 u32 load; /* Each slave sums the loadHistory of all clients
138 * assigned to it
139 */
140};
141
142struct alb_bond_info {
143 struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */
144 spinlock_t tx_hashtbl_lock;
145 u32 unbalanced_load;
146 int tx_rebalance_counter;
147 int lp_counter;
148 /* -------- rlb parameters -------- */
149 int rlb_enabled;
150 struct rlb_client_info *rx_hashtbl; /* Receive hash table */
151 spinlock_t rx_hashtbl_lock;
152 u32 rx_hashtbl_used_head;
153 u8 rx_ntt; /* flag - need to transmit
154 * to all rx clients
155 */
156 struct slave *rx_slave;/* last slave to xmit from */
157 u8 primary_is_promisc; /* boolean */
158 u32 rlb_promisc_timeout_counter;/* counts primary
159 * promiscuity time
160 */
161 u32 rlb_update_delay_counter;
162 u32 rlb_update_retry_counter;/* counter of retries
163 * of client update
164 */
165 u8 rlb_rebalance; /* flag - indicates that the
166 * rx traffic should be
167 * rebalanced
168 */
169};
170
171int bond_alb_initialize(struct bonding *bond, int rlb_enabled);
172void bond_alb_deinitialize(struct bonding *bond);
173int bond_alb_init_slave(struct bonding *bond, struct slave *slave);
174void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave);
175void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link);
176void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave);
177int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev);
178void bond_alb_monitor(struct work_struct *);
179int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr);
180void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id);
181#endif /* __BOND_ALB_H__ */
182
1/*
2 * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 */
22
23#ifndef __BOND_ALB_H__
24#define __BOND_ALB_H__
25
26#include <linux/if_ether.h>
27
28struct bonding;
29struct slave;
30
31#define BOND_ALB_INFO(bond) ((bond)->alb_info)
32#define SLAVE_TLB_INFO(slave) ((slave)->tlb_info)
33
34#define ALB_TIMER_TICKS_PER_SEC 10 /* should be a divisor of HZ */
35#define BOND_TLB_REBALANCE_INTERVAL 10 /* In seconds, periodic re-balancing.
36 * Used for division - never set
37 * to zero !!!
38 */
39#define BOND_ALB_LP_INTERVAL 1 /* In seconds, periodic send of
40 * learning packets to the switch
41 */
42
43#define BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \
44 * ALB_TIMER_TICKS_PER_SEC)
45
46#define BOND_ALB_LP_TICKS (BOND_ALB_LP_INTERVAL \
47 * ALB_TIMER_TICKS_PER_SEC)
48
49#define TLB_HASH_TABLE_SIZE 256 /* The size of the clients hash table.
50 * Note that this value MUST NOT be smaller
51 * because the key hash table is BYTE wide !
52 */
53
54
55#define TLB_NULL_INDEX 0xffffffff
56#define MAX_LP_BURST 3
57
58/* rlb defs */
59#define RLB_HASH_TABLE_SIZE 256
60#define RLB_NULL_INDEX 0xffffffff
61#define RLB_UPDATE_DELAY (2*ALB_TIMER_TICKS_PER_SEC) /* 2 seconds */
62#define RLB_ARP_BURST_SIZE 2
63#define RLB_UPDATE_RETRY 3 /* 3-ticks - must be smaller than the rlb
64 * rebalance interval (5 min).
65 */
66/* RLB_PROMISC_TIMEOUT = 10 sec equals the time that the current slave is
67 * promiscuous after failover
68 */
69#define RLB_PROMISC_TIMEOUT (10*ALB_TIMER_TICKS_PER_SEC)
70
71
72struct tlb_client_info {
73 struct slave *tx_slave; /* A pointer to slave used for transmiting
74 * packets to a Client that the Hash function
75 * gave this entry index.
76 */
77 u32 tx_bytes; /* Each Client accumulates the BytesTx that
78 * were transmitted to it, and after each
79 * CallBack the LoadHistory is divided
80 * by the balance interval
81 */
82 u32 load_history; /* This field contains the amount of Bytes
83 * that were transmitted to this client by
84 * the server on the previous balance
85 * interval in Bps.
86 */
87 u32 next; /* The next Hash table entry index, assigned
88 * to use the same adapter for transmit.
89 */
90 u32 prev; /* The previous Hash table entry index,
91 * assigned to use the same
92 */
93};
94
95/* -------------------------------------------------------------------------
96 * struct rlb_client_info contains all info related to a specific rx client
97 * connection. This is the Clients Hash Table entry struct
98 * -------------------------------------------------------------------------
99 */
100struct rlb_client_info {
101 __be32 ip_src; /* the server IP address */
102 __be32 ip_dst; /* the client IP address */
103 u8 mac_dst[ETH_ALEN]; /* the client MAC address */
104 u32 next; /* The next Hash table entry index */
105 u32 prev; /* The previous Hash table entry index */
106 u8 assigned; /* checking whether this entry is assigned */
107 u8 ntt; /* flag - need to transmit client info */
108 struct slave *slave; /* the slave assigned to this client */
109 u8 tag; /* flag - need to tag skb */
110 unsigned short vlan_id; /* VLAN tag associated with IP address */
111};
112
113struct tlb_slave_info {
114 u32 head; /* Index to the head of the bi-directional clients
115 * hash table entries list. The entries in the list
116 * are the entries that were assigned to use this
117 * slave for transmit.
118 */
119 u32 load; /* Each slave sums the loadHistory of all clients
120 * assigned to it
121 */
122};
123
124struct alb_bond_info {
125 struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */
126 spinlock_t tx_hashtbl_lock;
127 u32 unbalanced_load;
128 int tx_rebalance_counter;
129 int lp_counter;
130 /* -------- rlb parameters -------- */
131 int rlb_enabled;
132 struct rlb_client_info *rx_hashtbl; /* Receive hash table */
133 spinlock_t rx_hashtbl_lock;
134 u32 rx_hashtbl_head;
135 u8 rx_ntt; /* flag - need to transmit
136 * to all rx clients
137 */
138 struct slave *next_rx_slave;/* next slave to be assigned
139 * to a new rx client for
140 */
141 u8 primary_is_promisc; /* boolean */
142 u32 rlb_promisc_timeout_counter;/* counts primary
143 * promiscuity time
144 */
145 u32 rlb_update_delay_counter;
146 u32 rlb_update_retry_counter;/* counter of retries
147 * of client update
148 */
149 u8 rlb_rebalance; /* flag - indicates that the
150 * rx traffic should be
151 * rebalanced
152 */
153 struct vlan_entry *current_alb_vlan;
154};
155
156int bond_alb_initialize(struct bonding *bond, int rlb_enabled);
157void bond_alb_deinitialize(struct bonding *bond);
158int bond_alb_init_slave(struct bonding *bond, struct slave *slave);
159void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave);
160void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link);
161void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave);
162int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev);
163void bond_alb_monitor(struct work_struct *);
164int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr);
165void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id);
166#endif /* __BOND_ALB_H__ */
167