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1da177e4 LT |
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 | |
adf8d3ff | 15 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
1da177e4 LT |
16 | * |
17 | * The full GNU General Public License is included in this distribution in the | |
18 | * file called LICENSE. | |
19 | * | |
1da177e4 LT |
20 | */ |
21 | ||
1ef8019b DM |
22 | #ifndef _NET_BOND_ALB_H |
23 | #define _NET_BOND_ALB_H | |
1da177e4 LT |
24 | |
25 | #include <linux/if_ether.h> | |
26 | ||
27 | struct bonding; | |
28 | struct slave; | |
29 | ||
30 | #define BOND_ALB_INFO(bond) ((bond)->alb_info) | |
31 | #define SLAVE_TLB_INFO(slave) ((slave)->tlb_info) | |
32 | ||
411204a5 TI |
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 | */ | |
7eacd038 NH |
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 | */ | |
411204a5 TI |
42 | |
43 | #define BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \ | |
44 | * ALB_TIMER_TICKS_PER_SEC) | |
45 | ||
7eacd038 | 46 | #define BOND_ALB_LP_TICKS(bond) (BOND_ALB_LP_INTERVAL(bond) \ |
411204a5 TI |
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 | |
411204a5 TI |
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 | ||
1da177e4 LT |
71 | struct 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 | */ | |
5e8996e7 | 76 | u32 tx_bytes; /* Each Client accumulates the BytesTx that |
9814290a | 77 | * were transmitted to it, and after each |
25985edc | 78 | * CallBack the LoadHistory is divided |
1da177e4 LT |
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 | |
e53665c6 JB |
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). | |
1da177e4 LT |
108 | * ------------------------------------------------------------------------- |
109 | */ | |
110 | struct rlb_client_info { | |
d3bb52b0 AV |
111 | __be32 ip_src; /* the server IP address */ |
112 | __be32 ip_dst; /* the client IP address */ | |
e53665c6 | 113 | u8 mac_src[ETH_ALEN]; /* the server MAC address */ |
1da177e4 | 114 | u8 mac_dst[ETH_ALEN]; /* the client MAC address */ |
e53665c6 JB |
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 | ||
1da177e4 LT |
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 */ | |
1da177e4 LT |
128 | unsigned short vlan_id; /* VLAN tag associated with IP address */ |
129 | }; | |
130 | ||
131 | struct 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 | ||
142 | struct alb_bond_info { | |
1da177e4 | 143 | struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */ |
1da177e4 LT |
144 | u32 unbalanced_load; |
145 | int tx_rebalance_counter; | |
146 | int lp_counter; | |
147 | /* -------- rlb parameters -------- */ | |
148 | int rlb_enabled; | |
1da177e4 | 149 | struct rlb_client_info *rx_hashtbl; /* Receive hash table */ |
e53665c6 | 150 | u32 rx_hashtbl_used_head; |
1da177e4 LT |
151 | u8 rx_ntt; /* flag - need to transmit |
152 | * to all rx clients | |
153 | */ | |
6475ae4c | 154 | struct slave *rx_slave;/* last slave to xmit from */ |
1da177e4 LT |
155 | u8 primary_is_promisc; /* boolean */ |
156 | u32 rlb_promisc_timeout_counter;/* counts primary | |
157 | * promiscuity time | |
158 | */ | |
159 | u32 rlb_update_delay_counter; | |
160 | u32 rlb_update_retry_counter;/* counter of retries | |
161 | * of client update | |
162 | */ | |
163 | u8 rlb_rebalance; /* flag - indicates that the | |
164 | * rx traffic should be | |
165 | * rebalanced | |
166 | */ | |
1da177e4 LT |
167 | }; |
168 | ||
169 | int bond_alb_initialize(struct bonding *bond, int rlb_enabled); | |
170 | void bond_alb_deinitialize(struct bonding *bond); | |
171 | int bond_alb_init_slave(struct bonding *bond, struct slave *slave); | |
172 | void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave); | |
173 | void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link); | |
174 | void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave); | |
175 | int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev); | |
f05b42ea | 176 | int bond_tlb_xmit(struct sk_buff *skb, struct net_device *bond_dev); |
1b76b316 | 177 | void bond_alb_monitor(struct work_struct *); |
1da177e4 LT |
178 | int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr); |
179 | void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id); | |
1ef8019b | 180 | #endif /* _NET_BOND_ALB_H */ |
1da177e4 | 181 |