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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 _NET_BOND_3AD_H
24#define _NET_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/* churn machine states(43.4.17 in the 802.3ad standard) */
86typedef enum {
87 AD_CHURN_MONITOR, /* monitoring for churn */
88 AD_CHURN, /* churn detected (error) */
89 AD_NO_CHURN /* no churn (no error) */
90} churn_state_t;
91
92/* rx indication types */
93typedef enum {
94 AD_TYPE_LACPDU = 1, /* type lacpdu */
95 AD_TYPE_MARKER /* type marker */
96} pdu_type_t;
97
98/* rx marker indication types */
99typedef enum {
100 AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */
101 AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */
102} bond_marker_subtype_t;
103
104/* timers types(43.4.9 in the 802.3ad standard) */
105typedef enum {
106 AD_CURRENT_WHILE_TIMER,
107 AD_ACTOR_CHURN_TIMER,
108 AD_PERIODIC_TIMER,
109 AD_PARTNER_CHURN_TIMER,
110 AD_WAIT_WHILE_TIMER
111} ad_timers_t;
112
113#pragma pack(1)
114
115/* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */
116typedef struct lacpdu {
117 u8 subtype; /* = LACP(= 0x01) */
118 u8 version_number;
119 u8 tlv_type_actor_info; /* = actor information(type/length/value) */
120 u8 actor_information_length; /* = 20 */
121 __be16 actor_system_priority;
122 struct mac_addr actor_system;
123 __be16 actor_key;
124 __be16 actor_port_priority;
125 __be16 actor_port;
126 u8 actor_state;
127 u8 reserved_3_1[3]; /* = 0 */
128 u8 tlv_type_partner_info; /* = partner information */
129 u8 partner_information_length; /* = 20 */
130 __be16 partner_system_priority;
131 struct mac_addr partner_system;
132 __be16 partner_key;
133 __be16 partner_port_priority;
134 __be16 partner_port;
135 u8 partner_state;
136 u8 reserved_3_2[3]; /* = 0 */
137 u8 tlv_type_collector_info; /* = collector information */
138 u8 collector_information_length;/* = 16 */
139 __be16 collector_max_delay;
140 u8 reserved_12[12];
141 u8 tlv_type_terminator; /* = terminator */
142 u8 terminator_length; /* = 0 */
143 u8 reserved_50[50]; /* = 0 */
144} __packed lacpdu_t;
145
146typedef struct lacpdu_header {
147 struct ethhdr hdr;
148 struct lacpdu lacpdu;
149} __packed lacpdu_header_t;
150
151/* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */
152typedef struct bond_marker {
153 u8 subtype; /* = 0x02 (marker PDU) */
154 u8 version_number; /* = 0x01 */
155 u8 tlv_type; /* = 0x01 (marker information) */
156 /* = 0x02 (marker response information) */
157 u8 marker_length; /* = 0x16 */
158 u16 requester_port; /* The number assigned to the port by the requester */
159 struct mac_addr requester_system; /* The requester's system id */
160 u32 requester_transaction_id; /* The transaction id allocated by the requester, */
161 u16 pad; /* = 0 */
162 u8 tlv_type_terminator; /* = 0x00 */
163 u8 terminator_length; /* = 0x00 */
164 u8 reserved_90[90]; /* = 0 */
165} __packed bond_marker_t;
166
167typedef struct bond_marker_header {
168 struct ethhdr hdr;
169 struct bond_marker marker;
170} __packed bond_marker_header_t;
171
172#pragma pack()
173
174struct slave;
175struct bonding;
176struct ad_info;
177struct port;
178
179#ifdef __ia64__
180#pragma pack(8)
181#endif
182
183/* aggregator structure(43.4.5 in the 802.3ad standard) */
184typedef struct aggregator {
185 struct mac_addr aggregator_mac_address;
186 u16 aggregator_identifier;
187 bool is_individual;
188 u16 actor_admin_aggregator_key;
189 u16 actor_oper_aggregator_key;
190 struct mac_addr partner_system;
191 u16 partner_system_priority;
192 u16 partner_oper_aggregator_key;
193 u16 receive_state; /* BOOLEAN */
194 u16 transmit_state; /* BOOLEAN */
195 struct port *lag_ports;
196 /* ****** PRIVATE PARAMETERS ****** */
197 struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */
198 u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */
199 u16 num_of_ports;
200} aggregator_t;
201
202struct port_params {
203 struct mac_addr system;
204 u16 system_priority;
205 u16 key;
206 u16 port_number;
207 u16 port_priority;
208 u16 port_state;
209};
210
211/* port structure(43.4.6 in the 802.3ad standard) */
212typedef struct port {
213 u16 actor_port_number;
214 u16 actor_port_priority;
215 struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */
216 u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */
217 u16 actor_port_aggregator_identifier;
218 bool ntt;
219 u16 actor_admin_port_key;
220 u16 actor_oper_port_key;
221 u8 actor_admin_port_state;
222 u8 actor_oper_port_state;
223
224 struct port_params partner_admin;
225 struct port_params partner_oper;
226
227 bool is_enabled;
228
229 /* ****** PRIVATE PARAMETERS ****** */
230 u16 sm_vars; /* all state machines variables for this port */
231 rx_states_t sm_rx_state; /* state machine rx state */
232 u16 sm_rx_timer_counter; /* state machine rx timer counter */
233 periodic_states_t sm_periodic_state; /* state machine periodic state */
234 u16 sm_periodic_timer_counter; /* state machine periodic timer counter */
235 mux_states_t sm_mux_state; /* state machine mux state */
236 u16 sm_mux_timer_counter; /* state machine mux timer counter */
237 tx_states_t sm_tx_state; /* state machine tx state */
238 u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */
239 u16 sm_churn_actor_timer_counter;
240 u16 sm_churn_partner_timer_counter;
241 u32 churn_actor_count;
242 u32 churn_partner_count;
243 churn_state_t sm_churn_actor_state;
244 churn_state_t sm_churn_partner_state;
245 struct slave *slave; /* pointer to the bond slave that this port belongs to */
246 struct aggregator *aggregator; /* pointer to an aggregator that this port related to */
247 struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */
248 u32 transaction_id; /* continuous number for identification of Marker PDU's; */
249 struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */
250} port_t;
251
252/* system structure */
253struct ad_system {
254 u16 sys_priority;
255 struct mac_addr sys_mac_addr;
256};
257
258#ifdef __ia64__
259#pragma pack()
260#endif
261
262/* ========== AD Exported structures to the main bonding code ========== */
263#define BOND_AD_INFO(bond) ((bond)->ad_info)
264#define SLAVE_AD_INFO(slave) ((slave)->ad_info)
265
266struct ad_bond_info {
267 struct ad_system system; /* 802.3ad system structure */
268 u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
269 u16 aggregator_identifier;
270};
271
272struct ad_slave_info {
273 struct aggregator aggregator; /* 802.3ad aggregator structure */
274 struct port port; /* 802.3ad port structure */
275 u16 id;
276};
277
278static inline const char *bond_3ad_churn_desc(churn_state_t state)
279{
280 static const char *const churn_description[] = {
281 "monitoring",
282 "churned",
283 "none",
284 "unknown"
285 };
286 int max_size = sizeof(churn_description) / sizeof(churn_description[0]);
287
288 if (state >= max_size)
289 state = max_size - 1;
290
291 return churn_description[state];
292}
293
294/* ========== AD Exported functions to the main bonding code ========== */
295void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution);
296void bond_3ad_bind_slave(struct slave *slave);
297void bond_3ad_unbind_slave(struct slave *slave);
298void bond_3ad_state_machine_handler(struct work_struct *);
299void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout);
300void bond_3ad_adapter_speed_duplex_changed(struct slave *slave);
301void bond_3ad_handle_link_change(struct slave *slave, char link);
302int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
303int __bond_3ad_get_active_agg_info(struct bonding *bond,
304 struct ad_info *ad_info);
305int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
306 struct slave *slave);
307int bond_3ad_set_carrier(struct bonding *bond);
308void bond_3ad_update_lacp_rate(struct bonding *bond);
309void bond_3ad_update_ad_actor_settings(struct bonding *bond);
310#endif /* _NET_BOND_3AD_H */
311