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0a65089e | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. | |
1da177e4 LT |
4 | */ |
5 | ||
1ef8019b DM |
6 | #ifndef _NET_BOND_ALB_H |
7 | #define _NET_BOND_ALB_H | |
1da177e4 LT |
8 | |
9 | #include <linux/if_ether.h> | |
10 | ||
11 | struct bonding; | |
12 | struct slave; | |
13 | ||
14 | #define BOND_ALB_INFO(bond) ((bond)->alb_info) | |
15 | #define SLAVE_TLB_INFO(slave) ((slave)->tlb_info) | |
16 | ||
411204a5 TI |
17 | #define ALB_TIMER_TICKS_PER_SEC 10 /* should be a divisor of HZ */ |
18 | #define BOND_TLB_REBALANCE_INTERVAL 10 /* In seconds, periodic re-balancing. | |
19 | * Used for division - never set | |
20 | * to zero !!! | |
21 | */ | |
7eacd038 NH |
22 | #define BOND_ALB_DEFAULT_LP_INTERVAL 1 |
23 | #define BOND_ALB_LP_INTERVAL(bond) (bond->params.lp_interval) /* In seconds, periodic send of | |
24 | * learning packets to the switch | |
25 | */ | |
411204a5 TI |
26 | |
27 | #define BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \ | |
28 | * ALB_TIMER_TICKS_PER_SEC) | |
29 | ||
7eacd038 | 30 | #define BOND_ALB_LP_TICKS(bond) (BOND_ALB_LP_INTERVAL(bond) \ |
411204a5 TI |
31 | * ALB_TIMER_TICKS_PER_SEC) |
32 | ||
33 | #define TLB_HASH_TABLE_SIZE 256 /* The size of the clients hash table. | |
34 | * Note that this value MUST NOT be smaller | |
35 | * because the key hash table is BYTE wide ! | |
36 | */ | |
37 | ||
38 | ||
39 | #define TLB_NULL_INDEX 0xffffffff | |
411204a5 TI |
40 | |
41 | /* rlb defs */ | |
42 | #define RLB_HASH_TABLE_SIZE 256 | |
43 | #define RLB_NULL_INDEX 0xffffffff | |
44 | #define RLB_UPDATE_DELAY (2*ALB_TIMER_TICKS_PER_SEC) /* 2 seconds */ | |
45 | #define RLB_ARP_BURST_SIZE 2 | |
46 | #define RLB_UPDATE_RETRY 3 /* 3-ticks - must be smaller than the rlb | |
47 | * rebalance interval (5 min). | |
48 | */ | |
49 | /* RLB_PROMISC_TIMEOUT = 10 sec equals the time that the current slave is | |
50 | * promiscuous after failover | |
51 | */ | |
52 | #define RLB_PROMISC_TIMEOUT (10*ALB_TIMER_TICKS_PER_SEC) | |
53 | ||
54 | ||
1da177e4 LT |
55 | struct tlb_client_info { |
56 | struct slave *tx_slave; /* A pointer to slave used for transmiting | |
57 | * packets to a Client that the Hash function | |
58 | * gave this entry index. | |
59 | */ | |
5e8996e7 | 60 | u32 tx_bytes; /* Each Client accumulates the BytesTx that |
9814290a | 61 | * were transmitted to it, and after each |
25985edc | 62 | * CallBack the LoadHistory is divided |
1da177e4 LT |
63 | * by the balance interval |
64 | */ | |
65 | u32 load_history; /* This field contains the amount of Bytes | |
66 | * that were transmitted to this client by | |
67 | * the server on the previous balance | |
68 | * interval in Bps. | |
69 | */ | |
70 | u32 next; /* The next Hash table entry index, assigned | |
71 | * to use the same adapter for transmit. | |
72 | */ | |
73 | u32 prev; /* The previous Hash table entry index, | |
74 | * assigned to use the same | |
75 | */ | |
76 | }; | |
77 | ||
78 | /* ------------------------------------------------------------------------- | |
79 | * struct rlb_client_info contains all info related to a specific rx client | |
e53665c6 JB |
80 | * connection. This is the Clients Hash Table entry struct. |
81 | * Note that this is not a proper hash table; if a new client's IP address | |
82 | * hash collides with an existing client entry, the old entry is replaced. | |
83 | * | |
84 | * There is a linked list (linked by the used_next and used_prev members) | |
85 | * linking all the used entries of the hash table. This allows updating | |
86 | * all the clients without walking over all the unused elements of the table. | |
87 | * | |
88 | * There are also linked lists of entries with identical hash(ip_src). These | |
89 | * allow cleaning up the table from ip_src<->mac_src associations that have | |
90 | * become outdated and would cause sending out invalid ARP updates to the | |
91 | * network. These are linked by the (src_next and src_prev members). | |
1da177e4 LT |
92 | * ------------------------------------------------------------------------- |
93 | */ | |
94 | struct rlb_client_info { | |
d3bb52b0 AV |
95 | __be32 ip_src; /* the server IP address */ |
96 | __be32 ip_dst; /* the client IP address */ | |
e53665c6 | 97 | u8 mac_src[ETH_ALEN]; /* the server MAC address */ |
1da177e4 | 98 | u8 mac_dst[ETH_ALEN]; /* the client MAC address */ |
e53665c6 JB |
99 | |
100 | /* list of used hash table entries, starting at rx_hashtbl_used_head */ | |
101 | u32 used_next; | |
102 | u32 used_prev; | |
103 | ||
104 | /* ip_src based hashing */ | |
105 | u32 src_next; /* next entry with same hash(ip_src) */ | |
106 | u32 src_prev; /* prev entry with same hash(ip_src) */ | |
107 | u32 src_first; /* first entry with hash(ip_src) == this entry's index */ | |
108 | ||
1da177e4 LT |
109 | u8 assigned; /* checking whether this entry is assigned */ |
110 | u8 ntt; /* flag - need to transmit client info */ | |
111 | struct slave *slave; /* the slave assigned to this client */ | |
1da177e4 LT |
112 | unsigned short vlan_id; /* VLAN tag associated with IP address */ |
113 | }; | |
114 | ||
115 | struct tlb_slave_info { | |
116 | u32 head; /* Index to the head of the bi-directional clients | |
117 | * hash table entries list. The entries in the list | |
118 | * are the entries that were assigned to use this | |
119 | * slave for transmit. | |
120 | */ | |
121 | u32 load; /* Each slave sums the loadHistory of all clients | |
122 | * assigned to it | |
123 | */ | |
124 | }; | |
125 | ||
126 | struct alb_bond_info { | |
1da177e4 | 127 | struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */ |
1da177e4 LT |
128 | u32 unbalanced_load; |
129 | int tx_rebalance_counter; | |
130 | int lp_counter; | |
131 | /* -------- rlb parameters -------- */ | |
132 | int rlb_enabled; | |
1da177e4 | 133 | struct rlb_client_info *rx_hashtbl; /* Receive hash table */ |
e53665c6 | 134 | u32 rx_hashtbl_used_head; |
1da177e4 LT |
135 | u8 rx_ntt; /* flag - need to transmit |
136 | * to all rx clients | |
137 | */ | |
6475ae4c | 138 | struct slave *rx_slave;/* last slave to xmit from */ |
1da177e4 LT |
139 | u8 primary_is_promisc; /* boolean */ |
140 | u32 rlb_promisc_timeout_counter;/* counts primary | |
141 | * promiscuity time | |
142 | */ | |
143 | u32 rlb_update_delay_counter; | |
144 | u32 rlb_update_retry_counter;/* counter of retries | |
145 | * of client update | |
146 | */ | |
147 | u8 rlb_rebalance; /* flag - indicates that the | |
148 | * rx traffic should be | |
149 | * rebalanced | |
150 | */ | |
1da177e4 LT |
151 | }; |
152 | ||
153 | int bond_alb_initialize(struct bonding *bond, int rlb_enabled); | |
154 | void bond_alb_deinitialize(struct bonding *bond); | |
155 | int bond_alb_init_slave(struct bonding *bond, struct slave *slave); | |
156 | void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave); | |
157 | void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link); | |
158 | void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave); | |
159 | int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev); | |
f05b42ea | 160 | int bond_tlb_xmit(struct sk_buff *skb, struct net_device *bond_dev); |
34b37e20 MG |
161 | struct slave *bond_xmit_alb_slave_get(struct bonding *bond, |
162 | struct sk_buff *skb); | |
163 | struct slave *bond_xmit_tlb_slave_get(struct bonding *bond, | |
164 | struct sk_buff *skb); | |
1b76b316 | 165 | void bond_alb_monitor(struct work_struct *); |
1da177e4 LT |
166 | int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr); |
167 | void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id); | |
1ef8019b | 168 | #endif /* _NET_BOND_ALB_H */ |
1da177e4 | 169 |