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
28 struct bonding;
29 struct slave;
30
31 #define BOND_ALB_INFO(bond) ((bond)->alb_info)
32 #define SLAVE_TLB_INFO(slave) ((slave)->tlb_info)
33
34 struct tlb_client_info {
35 struct slave *tx_slave; /* A pointer to slave used for transmiting
36 * packets to a Client that the Hash function
37 * gave this entry index.
38 */
39 u32 tx_bytes; /* Each Client acumulates the BytesTx that
40 * were tranmitted to it, and after each
41 * CallBack the LoadHistory is devided
42 * by the balance interval
43 */
44 u32 load_history; /* This field contains the amount of Bytes
45 * that were transmitted to this client by
46 * the server on the previous balance
47 * interval in Bps.
48 */
49 u32 next; /* The next Hash table entry index, assigned
50 * to use the same adapter for transmit.
51 */
52 u32 prev; /* The previous Hash table entry index,
53 * assigned to use the same
54 */
55 };
56
57 /* -------------------------------------------------------------------------
58 * struct rlb_client_info contains all info related to a specific rx client
59 * connection. This is the Clients Hash Table entry struct
60 * -------------------------------------------------------------------------
61 */
62 struct rlb_client_info {
63 __be32 ip_src; /* the server IP address */
64 __be32 ip_dst; /* the client IP address */
65 u8 mac_dst[ETH_ALEN]; /* the client MAC address */
66 u32 next; /* The next Hash table entry index */
67 u32 prev; /* The previous Hash table entry index */
68 u8 assigned; /* checking whether this entry is assigned */
69 u8 ntt; /* flag - need to transmit client info */
70 struct slave *slave; /* the slave assigned to this client */
71 u8 tag; /* flag - need to tag skb */
72 unsigned short vlan_id; /* VLAN tag associated with IP address */
73 };
74
75 struct tlb_slave_info {
76 u32 head; /* Index to the head of the bi-directional clients
77 * hash table entries list. The entries in the list
78 * are the entries that were assigned to use this
79 * slave for transmit.
80 */
81 u32 load; /* Each slave sums the loadHistory of all clients
82 * assigned to it
83 */
84 };
85
86 struct alb_bond_info {
87 struct timer_list alb_timer;
88 struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */
89 spinlock_t tx_hashtbl_lock;
90 u32 unbalanced_load;
91 int tx_rebalance_counter;
92 int lp_counter;
93 /* -------- rlb parameters -------- */
94 int rlb_enabled;
95 struct packet_type rlb_pkt_type;
96 struct rlb_client_info *rx_hashtbl; /* Receive hash table */
97 spinlock_t rx_hashtbl_lock;
98 u32 rx_hashtbl_head;
99 u8 rx_ntt; /* flag - need to transmit
100 * to all rx clients
101 */
102 struct slave *next_rx_slave;/* next slave to be assigned
103 * to a new rx client for
104 */
105 u32 rlb_interval_counter;
106 u8 primary_is_promisc; /* boolean */
107 u32 rlb_promisc_timeout_counter;/* counts primary
108 * promiscuity time
109 */
110 u32 rlb_update_delay_counter;
111 u32 rlb_update_retry_counter;/* counter of retries
112 * of client update
113 */
114 u8 rlb_rebalance; /* flag - indicates that the
115 * rx traffic should be
116 * rebalanced
117 */
118 struct vlan_entry *current_alb_vlan;
119 };
120
121 int bond_alb_initialize(struct bonding *bond, int rlb_enabled);
122 void bond_alb_deinitialize(struct bonding *bond);
123 int bond_alb_init_slave(struct bonding *bond, struct slave *slave);
124 void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave);
125 void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link);
126 void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave);
127 int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev);
128 void bond_alb_monitor(struct work_struct *);
129 int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr);
130 void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id);
131 #endif /* __BOND_ALB_H__ */
132
133
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