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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 Free
6 * Software Foundation; either version 2 of the License, or (at your option)
7 * any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59
16 * 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_3AD_H__
24#define __BOND_3AD_H__
25
26#include <asm/byteorder.h>
27#include <linux/skbuff.h>
28#include <linux/netdevice.h>
29#include <linux/if_ether.h>
30
31/* General definitions */
32#define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW)
33#define AD_TIMER_INTERVAL 100 /*msec*/
34
35#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
36
37#define AD_LACP_SLOW 0
38#define AD_LACP_FAST 1
39
40typedef struct mac_addr {
41 u8 mac_addr_value[ETH_ALEN];
42} __packed mac_addr_t;
43
44enum {
45 BOND_AD_STABLE = 0,
46 BOND_AD_BANDWIDTH = 1,
47 BOND_AD_COUNT = 2,
48};
49
50/* rx machine states(43.4.11 in the 802.3ad standard) */
51typedef enum {
52 AD_RX_DUMMY,
53 AD_RX_INITIALIZE, /* rx Machine */
54 AD_RX_PORT_DISABLED, /* rx Machine */
55 AD_RX_LACP_DISABLED, /* rx Machine */
56 AD_RX_EXPIRED, /* rx Machine */
57 AD_RX_DEFAULTED, /* rx Machine */
58 AD_RX_CURRENT /* rx Machine */
59} rx_states_t;
60
61/* periodic machine states(43.4.12 in the 802.3ad standard) */
62typedef enum {
63 AD_PERIODIC_DUMMY,
64 AD_NO_PERIODIC, /* periodic machine */
65 AD_FAST_PERIODIC, /* periodic machine */
66 AD_SLOW_PERIODIC, /* periodic machine */
67 AD_PERIODIC_TX /* periodic machine */
68} periodic_states_t;
69
70/* mux machine states(43.4.13 in the 802.3ad standard) */
71typedef enum {
72 AD_MUX_DUMMY,
73 AD_MUX_DETACHED, /* mux machine */
74 AD_MUX_WAITING, /* mux machine */
75 AD_MUX_ATTACHED, /* mux machine */
76 AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */
77} mux_states_t;
78
79/* tx machine states(43.4.15 in the 802.3ad standard) */
80typedef enum {
81 AD_TX_DUMMY,
82 AD_TRANSMIT /* tx Machine */
83} tx_states_t;
84
85/* rx indication types */
86typedef enum {
87 AD_TYPE_LACPDU = 1, /* type lacpdu */
88 AD_TYPE_MARKER /* type marker */
89} pdu_type_t;
90
91/* rx marker indication types */
92typedef enum {
93 AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */
94 AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */
95} bond_marker_subtype_t;
96
97/* timers types(43.4.9 in the 802.3ad standard) */
98typedef enum {
99 AD_CURRENT_WHILE_TIMER,
100 AD_ACTOR_CHURN_TIMER,
101 AD_PERIODIC_TIMER,
102 AD_PARTNER_CHURN_TIMER,
103 AD_WAIT_WHILE_TIMER
104} ad_timers_t;
105
106#pragma pack(1)
107
108/* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */
109typedef struct lacpdu {
110 u8 subtype; /* = LACP(= 0x01) */
111 u8 version_number;
112 u8 tlv_type_actor_info; /* = actor information(type/length/value) */
113 u8 actor_information_length; /* = 20 */
114 __be16 actor_system_priority;
115 struct mac_addr actor_system;
116 __be16 actor_key;
117 __be16 actor_port_priority;
118 __be16 actor_port;
119 u8 actor_state;
120 u8 reserved_3_1[3]; /* = 0 */
121 u8 tlv_type_partner_info; /* = partner information */
122 u8 partner_information_length; /* = 20 */
123 __be16 partner_system_priority;
124 struct mac_addr partner_system;
125 __be16 partner_key;
126 __be16 partner_port_priority;
127 __be16 partner_port;
128 u8 partner_state;
129 u8 reserved_3_2[3]; /* = 0 */
130 u8 tlv_type_collector_info; /* = collector information */
131 u8 collector_information_length;/* = 16 */
132 __be16 collector_max_delay;
133 u8 reserved_12[12];
134 u8 tlv_type_terminator; /* = terminator */
135 u8 terminator_length; /* = 0 */
136 u8 reserved_50[50]; /* = 0 */
137} __packed lacpdu_t;
138
139typedef struct lacpdu_header {
140 struct ethhdr hdr;
141 struct lacpdu lacpdu;
142} __packed lacpdu_header_t;
143
144/* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */
145typedef struct bond_marker {
146 u8 subtype; /* = 0x02 (marker PDU) */
147 u8 version_number; /* = 0x01 */
148 u8 tlv_type; /* = 0x01 (marker information) */
149 /* = 0x02 (marker response information) */
150 u8 marker_length; /* = 0x16 */
151 u16 requester_port; /* The number assigned to the port by the requester */
152 struct mac_addr requester_system; /* The requester's system id */
153 u32 requester_transaction_id; /* The transaction id allocated by the requester, */
154 u16 pad; /* = 0 */
155 u8 tlv_type_terminator; /* = 0x00 */
156 u8 terminator_length; /* = 0x00 */
157 u8 reserved_90[90]; /* = 0 */
158} __packed bond_marker_t;
159
160typedef struct bond_marker_header {
161 struct ethhdr hdr;
162 struct bond_marker marker;
163} __packed bond_marker_header_t;
164
165#pragma pack()
166
167struct slave;
168struct bonding;
169struct ad_info;
170struct port;
171
172#ifdef __ia64__
173#pragma pack(8)
174#endif
175
176/* aggregator structure(43.4.5 in the 802.3ad standard) */
177typedef struct aggregator {
178 struct mac_addr aggregator_mac_address;
179 u16 aggregator_identifier;
180 bool is_individual;
181 u16 actor_admin_aggregator_key;
182 u16 actor_oper_aggregator_key;
183 struct mac_addr partner_system;
184 u16 partner_system_priority;
185 u16 partner_oper_aggregator_key;
186 u16 receive_state; /* BOOLEAN */
187 u16 transmit_state; /* BOOLEAN */
188 struct port *lag_ports;
189 /* ****** PRIVATE PARAMETERS ****** */
190 struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */
191 u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */
192 u16 num_of_ports;
193} aggregator_t;
194
195struct port_params {
196 struct mac_addr system;
197 u16 system_priority;
198 u16 key;
199 u16 port_number;
200 u16 port_priority;
201 u16 port_state;
202};
203
204/* port structure(43.4.6 in the 802.3ad standard) */
205typedef struct port {
206 u16 actor_port_number;
207 u16 actor_port_priority;
208 struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */
209 u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */
210 u16 actor_port_aggregator_identifier;
211 bool ntt;
212 u16 actor_admin_port_key;
213 u16 actor_oper_port_key;
214 u8 actor_admin_port_state;
215 u8 actor_oper_port_state;
216
217 struct port_params partner_admin;
218 struct port_params partner_oper;
219
220 bool is_enabled;
221
222 /* ****** PRIVATE PARAMETERS ****** */
223 u16 sm_vars; /* all state machines variables for this port */
224 rx_states_t sm_rx_state; /* state machine rx state */
225 u16 sm_rx_timer_counter; /* state machine rx timer counter */
226 periodic_states_t sm_periodic_state; /* state machine periodic state */
227 u16 sm_periodic_timer_counter; /* state machine periodic timer counter */
228 mux_states_t sm_mux_state; /* state machine mux state */
229 u16 sm_mux_timer_counter; /* state machine mux timer counter */
230 tx_states_t sm_tx_state; /* state machine tx state */
231 u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */
232 struct slave *slave; /* pointer to the bond slave that this port belongs to */
233 struct aggregator *aggregator; /* pointer to an aggregator that this port related to */
234 struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */
235 u32 transaction_id; /* continuous number for identification of Marker PDU's; */
236 struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */
237} port_t;
238
239/* system structure */
240struct ad_system {
241 u16 sys_priority;
242 struct mac_addr sys_mac_addr;
243};
244
245#ifdef __ia64__
246#pragma pack()
247#endif
248
249/* ========== AD Exported structures to the main bonding code ========== */
250#define BOND_AD_INFO(bond) ((bond)->ad_info)
251#define SLAVE_AD_INFO(slave) ((slave)->ad_info)
252
253struct ad_bond_info {
254 struct ad_system system; /* 802.3ad system structure */
255 u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
256 u16 aggregator_identifier;
257};
258
259struct ad_slave_info {
260 struct aggregator aggregator; /* 802.3ad aggregator structure */
261 struct port port; /* 802.3ad port structure */
262 spinlock_t state_machine_lock; /* mutex state machines vs. incoming LACPDU */
263 u16 id;
264};
265
266/* ========== AD Exported functions to the main bonding code ========== */
267void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution);
268void bond_3ad_bind_slave(struct slave *slave);
269void bond_3ad_unbind_slave(struct slave *slave);
270void bond_3ad_state_machine_handler(struct work_struct *);
271void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout);
272void bond_3ad_adapter_speed_changed(struct slave *slave);
273void bond_3ad_adapter_duplex_changed(struct slave *slave);
274void bond_3ad_handle_link_change(struct slave *slave, char link);
275int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
276int __bond_3ad_get_active_agg_info(struct bonding *bond,
277 struct ad_info *ad_info);
278int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev);
279int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
280 struct slave *slave);
281int bond_3ad_set_carrier(struct bonding *bond);
282void bond_3ad_update_lacp_rate(struct bonding *bond);
283#endif /* __BOND_3AD_H__ */
284