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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 */
22
David S. Miller1ef80192014-11-10 13:27:49 -050023#ifndef _NET_BOND_3AD_H
24#define _NET_BOND_3AD_H
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26#include <asm/byteorder.h>
27#include <linux/skbuff.h>
28#include <linux/netdevice.h>
Richard Genouded9b58b2009-05-09 06:59:16 +000029#include <linux/if_ether.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
Joe Perches2ea24f22014-02-15 16:02:03 -080031/* General definitions */
Richard Genouded9b58b2009-05-09 06:59:16 +000032#define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW)
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#define AD_TIMER_INTERVAL 100 /*msec*/
34
35#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37#define AD_LACP_SLOW 0
38#define AD_LACP_FAST 1
39
40typedef struct mac_addr {
41 u8 mac_addr_value[ETH_ALEN];
Vitalii Demianetsa10e1462011-05-12 23:04:29 +000042} __packed mac_addr_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
Jay Vosburghfd989c82008-11-04 17:51:16 -080044enum {
45 BOND_AD_STABLE = 0,
46 BOND_AD_BANDWIDTH = 1,
47 BOND_AD_COUNT = 2,
48};
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Joe Perches2ea24f22014-02-15 16:02:03 -080050/* rx machine states(43.4.11 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070051typedef enum {
52 AD_RX_DUMMY,
Joe Perches2ea24f22014-02-15 16:02:03 -080053 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070059} rx_states_t;
60
Joe Perches2ea24f22014-02-15 16:02:03 -080061/* periodic machine states(43.4.12 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070062typedef enum {
63 AD_PERIODIC_DUMMY,
Joe Perches2ea24f22014-02-15 16:02:03 -080064 AD_NO_PERIODIC, /* periodic machine */
65 AD_FAST_PERIODIC, /* periodic machine */
66 AD_SLOW_PERIODIC, /* periodic machine */
67 AD_PERIODIC_TX /* periodic machine */
Linus Torvalds1da177e2005-04-16 15:20:36 -070068} periodic_states_t;
69
Joe Perches2ea24f22014-02-15 16:02:03 -080070/* mux machine states(43.4.13 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070071typedef enum {
72 AD_MUX_DUMMY,
Joe Perches2ea24f22014-02-15 16:02:03 -080073 AD_MUX_DETACHED, /* mux machine */
74 AD_MUX_WAITING, /* mux machine */
75 AD_MUX_ATTACHED, /* mux machine */
76 AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */
Linus Torvalds1da177e2005-04-16 15:20:36 -070077} mux_states_t;
78
Joe Perches2ea24f22014-02-15 16:02:03 -080079/* tx machine states(43.4.15 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070080typedef enum {
81 AD_TX_DUMMY,
Joe Perches2ea24f22014-02-15 16:02:03 -080082 AD_TRANSMIT /* tx Machine */
Linus Torvalds1da177e2005-04-16 15:20:36 -070083} tx_states_t;
84
Mahesh Bandewar14c95512015-02-23 17:50:11 -080085/* 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
Joe Perches2ea24f22014-02-15 16:02:03 -080092/* rx indication types */
Linus Torvalds1da177e2005-04-16 15:20:36 -070093typedef enum {
Joe Perches2ea24f22014-02-15 16:02:03 -080094 AD_TYPE_LACPDU = 1, /* type lacpdu */
95 AD_TYPE_MARKER /* type marker */
Linus Torvalds1da177e2005-04-16 15:20:36 -070096} pdu_type_t;
97
Joe Perches2ea24f22014-02-15 16:02:03 -080098/* rx marker indication types */
Linus Torvalds1da177e2005-04-16 15:20:36 -070099typedef enum {
Joe Perches2ea24f22014-02-15 16:02:03 -0800100 AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */
101 AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */
Mathieu Desnoyers1c3f0b82007-10-18 23:41:04 -0700102} bond_marker_subtype_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
Joe Perches2ea24f22014-02-15 16:02:03 -0800104/* timers types(43.4.9 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105typedef 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
Joe Perches2ea24f22014-02-15 16:02:03 -0800115/* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116typedef struct lacpdu {
Joe Perches2ea24f22014-02-15 16:02:03 -0800117 u8 subtype; /* = LACP(= 0x01) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 u8 version_number;
Joe Perches2ea24f22014-02-15 16:02:03 -0800119 u8 tlv_type_actor_info; /* = actor information(type/length/value) */
120 u8 actor_information_length; /* = 20 */
Al Virod3bb52b2007-08-22 20:06:58 -0400121 __be16 actor_system_priority;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 struct mac_addr actor_system;
Al Virod3bb52b2007-08-22 20:06:58 -0400123 __be16 actor_key;
124 __be16 actor_port_priority;
125 __be16 actor_port;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 u8 actor_state;
Joe Perches2ea24f22014-02-15 16:02:03 -0800127 u8 reserved_3_1[3]; /* = 0 */
128 u8 tlv_type_partner_info; /* = partner information */
129 u8 partner_information_length; /* = 20 */
Al Virod3bb52b2007-08-22 20:06:58 -0400130 __be16 partner_system_priority;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 struct mac_addr partner_system;
Al Virod3bb52b2007-08-22 20:06:58 -0400132 __be16 partner_key;
133 __be16 partner_port_priority;
134 __be16 partner_port;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 u8 partner_state;
Joe Perches2ea24f22014-02-15 16:02:03 -0800136 u8 reserved_3_2[3]; /* = 0 */
137 u8 tlv_type_collector_info; /* = collector information */
138 u8 collector_information_length;/* = 16 */
Al Virod3bb52b2007-08-22 20:06:58 -0400139 __be16 collector_max_delay;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 u8 reserved_12[12];
Joe Perches2ea24f22014-02-15 16:02:03 -0800141 u8 tlv_type_terminator; /* = terminator */
142 u8 terminator_length; /* = 0 */
143 u8 reserved_50[50]; /* = 0 */
Vitalii Demianetsa10e1462011-05-12 23:04:29 +0000144} __packed lacpdu_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146typedef struct lacpdu_header {
Holger Eitzenbergere7271492008-12-26 13:41:53 -0800147 struct ethhdr hdr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 struct lacpdu lacpdu;
Vitalii Demianetsa10e1462011-05-12 23:04:29 +0000149} __packed lacpdu_header_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
Joe Perches2ea24f22014-02-15 16:02:03 -0800151/* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */
Mathieu Desnoyers1c3f0b82007-10-18 23:41:04 -0700152typedef struct bond_marker {
Joe Perches2ea24f22014-02-15 16:02:03 -0800153 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 */
Vitalii Demianetsa10e1462011-05-12 23:04:29 +0000165} __packed bond_marker_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Mathieu Desnoyers1c3f0b82007-10-18 23:41:04 -0700167typedef struct bond_marker_header {
Holger Eitzenbergere7271492008-12-26 13:41:53 -0800168 struct ethhdr hdr;
Mathieu Desnoyers1c3f0b82007-10-18 23:41:04 -0700169 struct bond_marker marker;
Vitalii Demianetsa10e1462011-05-12 23:04:29 +0000170} __packed bond_marker_header_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
172#pragma pack()
173
174struct slave;
175struct bonding;
176struct ad_info;
177struct port;
178
179#ifdef __ia64__
180#pragma pack(8)
181#endif
182
Joe Perches2ea24f22014-02-15 16:02:03 -0800183/* aggregator structure(43.4.5 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184typedef struct aggregator {
185 struct mac_addr aggregator_mac_address;
186 u16 aggregator_identifier;
Holger Eitzenberger1624db72008-12-26 13:27:21 -0800187 bool is_individual;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 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;
Joe Perches2ea24f22014-02-15 16:02:03 -0800193 u16 receive_state; /* BOOLEAN */
194 u16 transmit_state; /* BOOLEAN */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 struct port *lag_ports;
Joe Perches2ea24f22014-02-15 16:02:03 -0800196 /* ****** 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 u16 num_of_ports;
200} aggregator_t;
201
Holger Eitzenberger1055c9a2008-12-17 19:07:38 -0800202struct 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
Joe Perches2ea24f22014-02-15 16:02:03 -0800211/* port structure(43.4.6 in the 802.3ad standard) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212typedef struct port {
213 u16 actor_port_number;
214 u16 actor_port_priority;
Joe Perches2ea24f22014-02-15 16:02:03 -0800215 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 u16 actor_port_aggregator_identifier;
Holger Eitzenbergerd238d452008-12-26 11:18:15 -0800218 bool ntt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 u16 actor_admin_port_key;
220 u16 actor_oper_port_key;
221 u8 actor_admin_port_state;
222 u8 actor_oper_port_state;
Holger Eitzenberger1055c9a2008-12-17 19:07:38 -0800223
224 struct port_params partner_admin;
225 struct port_params partner_oper;
226
Holger Eitzenbergerf48127b2008-12-26 13:26:54 -0800227 bool is_enabled;
228
Joe Perches2ea24f22014-02-15 16:02:03 -0800229 /* ****** 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) */
Mahesh Bandewar14c95512015-02-23 17:50:11 -0800239 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;
Joe Perches2ea24f22014-02-15 16:02:03 -0800245 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250} port_t;
251
Joe Perches2ea24f22014-02-15 16:02:03 -0800252/* system structure */
Holger Eitzenberger87f422f2008-12-26 13:27:57 -0800253struct ad_system {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 u16 sys_priority;
255 struct mac_addr sys_mac_addr;
Holger Eitzenberger87f422f2008-12-26 13:27:57 -0800256};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
258#ifdef __ia64__
259#pragma pack()
260#endif
261
Joe Perches2ea24f22014-02-15 16:02:03 -0800262/* ========== AD Exported structures to the main bonding code ========== */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263#define BOND_AD_INFO(bond) ((bond)->ad_info)
264#define SLAVE_AD_INFO(slave) ((slave)->ad_info)
265
266struct ad_bond_info {
Joe Perches2ea24f22014-02-15 16:02:03 -0800267 struct ad_system system; /* 802.3ad system structure */
268 u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
Jiri Bohac163c8ff2014-02-14 18:13:50 +0100269 u16 aggregator_identifier;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270};
271
272struct ad_slave_info {
Joe Perches2ea24f22014-02-15 16:02:03 -0800273 struct aggregator aggregator; /* 802.3ad aggregator structure */
274 struct port port; /* 802.3ad port structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 u16 id;
276};
277
Mahesh Bandewar14c95512015-02-23 17:50:11 -0800278static 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
Joe Perches2ea24f22014-02-15 16:02:03 -0800294/* ========== AD Exported functions to the main bonding code ========== */
Peter Pan(潘卫平)56d00c672011-06-08 21:19:02 +0000295void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution);
Joe Perches2ea24f22014-02-15 16:02:03 -0800296void bond_3ad_bind_slave(struct slave *slave);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297void bond_3ad_unbind_slave(struct slave *slave);
Jay Vosburgh1b76b312007-10-17 17:37:45 -0700298void bond_3ad_state_machine_handler(struct work_struct *);
Jay Vosburghfd989c82008-11-04 17:51:16 -0800299void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300void bond_3ad_adapter_speed_changed(struct slave *slave);
301void bond_3ad_adapter_duplex_changed(struct slave *slave);
302void bond_3ad_handle_link_change(struct slave *slave, char link);
303int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
nikolay@redhat.com318debd2013-05-18 01:18:31 +0000304int __bond_3ad_get_active_agg_info(struct bonding *bond,
305 struct ad_info *ad_info);
Eric Dumazetde063b72012-06-11 19:23:07 +0000306int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
307 struct slave *slave);
Jay Vosburghff59c452006-03-27 13:27:43 -0800308int bond_3ad_set_carrier(struct bonding *bond);
Peter Pan(潘卫平)ba824a82011-06-08 21:19:01 +0000309void bond_3ad_update_lacp_rate(struct bonding *bond);
David S. Miller1ef80192014-11-10 13:27:49 -0500310#endif /* _NET_BOND_3AD_H */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311