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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/bonding/bond_3ad.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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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 * Changes:
23 *
24 * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
25 * Amir Noam <amir.noam at intel dot com>
26 * - Added support for lacp_rate module param.
27 *
28 * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
29 * - Renamed bond_3ad_link_status_changed() to
30 * bond_3ad_handle_link_change() for compatibility with TLB.
31 *
32 * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
33 * - Code cleanup and style changes
34 */
35
36#ifndef __BOND_3AD_H__
37#define __BOND_3AD_H__
38
39#include <asm/byteorder.h>
40#include <linux/skbuff.h>
41#include <linux/netdevice.h>
42
43// General definitions
44#define BOND_ETH_P_LACPDU 0x8809
45#define PKT_TYPE_LACPDU __constant_htons(BOND_ETH_P_LACPDU)
46#define AD_TIMER_INTERVAL 100 /*msec*/
47
48#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
49#define AD_MULTICAST_LACPDU_ADDR {MULTICAST_LACPDU_ADDR}
50
51#define AD_LACP_SLOW 0
52#define AD_LACP_FAST 1
53
54typedef struct mac_addr {
55 u8 mac_addr_value[ETH_ALEN];
56} mac_addr_t;
57
58typedef enum {
59 AD_BANDWIDTH = 0,
60 AD_COUNT
61} agg_selection_t;
62
63// rx machine states(43.4.11 in the 802.3ad standard)
64typedef enum {
65 AD_RX_DUMMY,
66 AD_RX_INITIALIZE, // rx Machine
67 AD_RX_PORT_DISABLED, // rx Machine
68 AD_RX_LACP_DISABLED, // rx Machine
69 AD_RX_EXPIRED, // rx Machine
70 AD_RX_DEFAULTED, // rx Machine
71 AD_RX_CURRENT // rx Machine
72} rx_states_t;
73
74// periodic machine states(43.4.12 in the 802.3ad standard)
75typedef enum {
76 AD_PERIODIC_DUMMY,
77 AD_NO_PERIODIC, // periodic machine
78 AD_FAST_PERIODIC, // periodic machine
79 AD_SLOW_PERIODIC, // periodic machine
80 AD_PERIODIC_TX // periodic machine
81} periodic_states_t;
82
83// mux machine states(43.4.13 in the 802.3ad standard)
84typedef enum {
85 AD_MUX_DUMMY,
86 AD_MUX_DETACHED, // mux machine
87 AD_MUX_WAITING, // mux machine
88 AD_MUX_ATTACHED, // mux machine
89 AD_MUX_COLLECTING_DISTRIBUTING // mux machine
90} mux_states_t;
91
92// tx machine states(43.4.15 in the 802.3ad standard)
93typedef enum {
94 AD_TX_DUMMY,
95 AD_TRANSMIT // tx Machine
96} tx_states_t;
97
98// rx indication types
99typedef enum {
100 AD_TYPE_LACPDU = 1, // type lacpdu
101 AD_TYPE_MARKER // type marker
102} pdu_type_t;
103
104// rx marker indication types
105typedef enum {
106 AD_MARKER_INFORMATION_SUBTYPE = 1, // marker imformation subtype
107 AD_MARKER_RESPONSE_SUBTYPE // marker response subtype
108} marker_subtype_t;
109
110// timers types(43.4.9 in the 802.3ad standard)
111typedef enum {
112 AD_CURRENT_WHILE_TIMER,
113 AD_ACTOR_CHURN_TIMER,
114 AD_PERIODIC_TIMER,
115 AD_PARTNER_CHURN_TIMER,
116 AD_WAIT_WHILE_TIMER
117} ad_timers_t;
118
119#pragma pack(1)
120
121typedef struct ad_header {
122 struct mac_addr destination_address;
123 struct mac_addr source_address;
124 u16 length_type;
125} ad_header_t;
126
127// Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard)
128typedef struct lacpdu {
129 u8 subtype; // = LACP(= 0x01)
130 u8 version_number;
131 u8 tlv_type_actor_info; // = actor information(type/length/value)
132 u8 actor_information_length; // = 20
133 u16 actor_system_priority;
134 struct mac_addr actor_system;
135 u16 actor_key;
136 u16 actor_port_priority;
137 u16 actor_port;
138 u8 actor_state;
139 u8 reserved_3_1[3]; // = 0
140 u8 tlv_type_partner_info; // = partner information
141 u8 partner_information_length; // = 20
142 u16 partner_system_priority;
143 struct mac_addr partner_system;
144 u16 partner_key;
145 u16 partner_port_priority;
146 u16 partner_port;
147 u8 partner_state;
148 u8 reserved_3_2[3]; // = 0
149 u8 tlv_type_collector_info; // = collector information
150 u8 collector_information_length; // = 16
151 u16 collector_max_delay;
152 u8 reserved_12[12];
153 u8 tlv_type_terminator; // = terminator
154 u8 terminator_length; // = 0
155 u8 reserved_50[50]; // = 0
156} lacpdu_t;
157
158typedef struct lacpdu_header {
159 struct ad_header ad_header;
160 struct lacpdu lacpdu;
161} lacpdu_header_t;
162
163// Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard)
164typedef struct marker {
165 u8 subtype; // = 0x02 (marker PDU)
166 u8 version_number; // = 0x01
167 u8 tlv_type; // = 0x01 (marker information)
168 // = 0x02 (marker response information)
169 u8 marker_length; // = 0x16
170 u16 requester_port; // The number assigned to the port by the requester
171 struct mac_addr requester_system; // The requester's system id
172 u32 requester_transaction_id; // The transaction id allocated by the requester,
173 u16 pad; // = 0
174 u8 tlv_type_terminator; // = 0x00
175 u8 terminator_length; // = 0x00
176 u8 reserved_90[90]; // = 0
177} marker_t;
178
179typedef struct marker_header {
180 struct ad_header ad_header;
181 struct marker marker;
182} marker_header_t;
183
184#pragma pack()
185
186struct slave;
187struct bonding;
188struct ad_info;
189struct port;
190
191#ifdef __ia64__
192#pragma pack(8)
193#endif
194
195// aggregator structure(43.4.5 in the 802.3ad standard)
196typedef struct aggregator {
197 struct mac_addr aggregator_mac_address;
198 u16 aggregator_identifier;
199 u16 is_individual; // BOOLEAN
200 u16 actor_admin_aggregator_key;
201 u16 actor_oper_aggregator_key;
202 struct mac_addr partner_system;
203 u16 partner_system_priority;
204 u16 partner_oper_aggregator_key;
205 u16 receive_state; // BOOLEAN
206 u16 transmit_state; // BOOLEAN
207 struct port *lag_ports;
208 // ****** PRIVATE PARAMETERS ******
209 struct slave *slave; // pointer to the bond slave that this aggregator belongs to
210 u16 is_active; // BOOLEAN. Indicates if this aggregator is active
211 u16 num_of_ports;
212} aggregator_t;
213
214// port structure(43.4.6 in the 802.3ad standard)
215typedef struct port {
216 u16 actor_port_number;
217 u16 actor_port_priority;
218 struct mac_addr actor_system; // This parameter is added here although it is not specified in the standard, just for simplification
219 u16 actor_system_priority; // This parameter is added here although it is not specified in the standard, just for simplification
220 u16 actor_port_aggregator_identifier;
221 u16 ntt; // BOOLEAN
222 u16 actor_admin_port_key;
223 u16 actor_oper_port_key;
224 u8 actor_admin_port_state;
225 u8 actor_oper_port_state;
226 struct mac_addr partner_admin_system;
227 struct mac_addr partner_oper_system;
228 u16 partner_admin_system_priority;
229 u16 partner_oper_system_priority;
230 u16 partner_admin_key;
231 u16 partner_oper_key;
232 u16 partner_admin_port_number;
233 u16 partner_oper_port_number;
234 u16 partner_admin_port_priority;
235 u16 partner_oper_port_priority;
236 u8 partner_admin_port_state;
237 u8 partner_oper_port_state;
238 u16 is_enabled; // BOOLEAN
239 // ****** PRIVATE PARAMETERS ******
240 u16 sm_vars; // all state machines variables for this port
241 rx_states_t sm_rx_state; // state machine rx state
242 u16 sm_rx_timer_counter; // state machine rx timer counter
243 periodic_states_t sm_periodic_state;// state machine periodic state
244 u16 sm_periodic_timer_counter; // state machine periodic timer counter
245 mux_states_t sm_mux_state; // state machine mux state
246 u16 sm_mux_timer_counter; // state machine mux timer counter
247 tx_states_t sm_tx_state; // state machine tx state
248 u16 sm_tx_timer_counter; // state machine tx timer counter(allways on - enter to transmit state 3 time per second)
249 struct slave *slave; // pointer to the bond slave that this port belongs to
250 struct aggregator *aggregator; // pointer to an aggregator that this port related to
251 struct port *next_port_in_aggregator; // Next port on the linked list of the parent aggregator
252 u32 transaction_id; // continuous number for identification of Marker PDU's;
253 struct lacpdu lacpdu; // the lacpdu that will be sent for this port
254} port_t;
255
256// system structure
257typedef struct ad_system {
258 u16 sys_priority;
259 struct mac_addr sys_mac_addr;
260} ad_system_t;
261
262#ifdef __ia64__
263#pragma pack()
264#endif
265
266// ================= AD Exported structures to the main bonding code ==================
267#define BOND_AD_INFO(bond) ((bond)->ad_info)
268#define SLAVE_AD_INFO(slave) ((slave)->ad_info)
269
270struct ad_bond_info {
271 ad_system_t system; // 802.3ad system structure
272 u32 agg_select_timer; // Timer to select aggregator after all adapter's hand shakes
273 u32 agg_select_mode; // Mode of selection of active aggregator(bandwidth/count)
274 int lacp_fast; /* whether fast periodic tx should be
275 * requested
276 */
277 struct timer_list ad_timer;
278 struct packet_type ad_pkt_type;
279};
280
281struct ad_slave_info {
282 struct aggregator aggregator; // 802.3ad aggregator structure
283 struct port port; // 802.3ad port structure
284 spinlock_t rx_machine_lock; // To avoid race condition between callback and receive interrupt
285 u16 id;
286};
287
288// ================= AD Exported functions to the main bonding code ==================
289void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution, int lacp_fast);
290int bond_3ad_bind_slave(struct slave *slave);
291void bond_3ad_unbind_slave(struct slave *slave);
292void bond_3ad_state_machine_handler(struct bonding *bond);
293void bond_3ad_adapter_speed_changed(struct slave *slave);
294void bond_3ad_adapter_duplex_changed(struct slave *slave);
295void bond_3ad_handle_link_change(struct slave *slave, char link);
296int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
297int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev);
298int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type* ptype);
299#endif //__BOND_3AD_H__
300