[mirror_ubuntu-bionic-kernel.git] / drivers / net / bonding / bond_3ad.h

/*
 * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 *
 * Changes:
 *
 * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
 *		Amir Noam <amir.noam at intel dot com>
 *	- Added support for lacp_rate module param.
 *
 * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
 *	- Renamed bond_3ad_link_status_changed() to
 *	  bond_3ad_handle_link_change() for compatibility with TLB.
 *
 * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
 *	- Code cleanup and style changes
 */

#ifndef __BOND_3AD_H__
#define __BOND_3AD_H__

#include <asm/byteorder.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>

// General definitions
#define BOND_ETH_P_LACPDU       0x8809
#define PKT_TYPE_LACPDU         __constant_htons(BOND_ETH_P_LACPDU)
#define AD_TIMER_INTERVAL       100 /*msec*/

#define MULTICAST_LACPDU_ADDR    {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
#define AD_MULTICAST_LACPDU_ADDR    {MULTICAST_LACPDU_ADDR}

#define AD_LACP_SLOW 0
#define AD_LACP_FAST 1

typedef struct mac_addr {
	u8 mac_addr_value[ETH_ALEN];
} mac_addr_t;

typedef enum {
	AD_BANDWIDTH = 0,
	AD_COUNT
} agg_selection_t;

// rx machine states(43.4.11 in the 802.3ad standard)
typedef enum {
	AD_RX_DUMMY,
	AD_RX_INITIALIZE,     // rx Machine
	AD_RX_PORT_DISABLED,  // rx Machine
	AD_RX_LACP_DISABLED,  // rx Machine
	AD_RX_EXPIRED,	      // rx Machine
	AD_RX_DEFAULTED,      // rx Machine
	AD_RX_CURRENT	      // rx Machine
} rx_states_t;

// periodic machine states(43.4.12 in the 802.3ad standard)
typedef enum {
	AD_PERIODIC_DUMMY,
	AD_NO_PERIODIC,	       // periodic machine
	AD_FAST_PERIODIC,      // periodic machine
	AD_SLOW_PERIODIC,      // periodic machine
	AD_PERIODIC_TX	   // periodic machine
} periodic_states_t;

// mux machine states(43.4.13 in the 802.3ad standard)
typedef enum {
	AD_MUX_DUMMY,
	AD_MUX_DETACHED,       // mux machine
	AD_MUX_WAITING,	       // mux machine
	AD_MUX_ATTACHED,       // mux machine
	AD_MUX_COLLECTING_DISTRIBUTING // mux machine
} mux_states_t;

// tx machine states(43.4.15 in the 802.3ad standard)
typedef enum {
	AD_TX_DUMMY,
	AD_TRANSMIT	   // tx Machine
} tx_states_t;

// rx indication types
typedef enum {
	AD_TYPE_LACPDU = 1,    // type lacpdu
	AD_TYPE_MARKER	   // type marker
} pdu_type_t;

// rx marker indication types
typedef enum {
	AD_MARKER_INFORMATION_SUBTYPE = 1, // marker imformation subtype
	AD_MARKER_RESPONSE_SUBTYPE     // marker response subtype
} marker_subtype_t;

// timers types(43.4.9 in the 802.3ad standard)
typedef enum {
	AD_CURRENT_WHILE_TIMER,
	AD_ACTOR_CHURN_TIMER,
	AD_PERIODIC_TIMER,
	AD_PARTNER_CHURN_TIMER,
	AD_WAIT_WHILE_TIMER
} ad_timers_t;

#pragma pack(1)

typedef struct ad_header {
	struct mac_addr destination_address;
	struct mac_addr source_address;
	u16 length_type;
} ad_header_t;

// Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard)
typedef struct lacpdu {
	u8 subtype;		     // = LACP(= 0x01)
	u8 version_number;
	u8 tlv_type_actor_info;	      // = actor information(type/length/value)
	u8 actor_information_length; // = 20
	u16 actor_system_priority;
	struct mac_addr actor_system;
	u16 actor_key;
	u16 actor_port_priority;
	u16 actor_port;
	u8 actor_state;
	u8 reserved_3_1[3];	     // = 0
	u8 tlv_type_partner_info;     // = partner information
	u8 partner_information_length;	 // = 20
	u16 partner_system_priority;
	struct mac_addr partner_system;
	u16 partner_key;
	u16 partner_port_priority;
	u16 partner_port;
	u8 partner_state;
	u8 reserved_3_2[3];	     // = 0
	u8 tlv_type_collector_info;	  // = collector information
	u8 collector_information_length; // = 16
	u16 collector_max_delay;
	u8 reserved_12[12];
	u8 tlv_type_terminator;	     // = terminator
	u8 terminator_length;	     // = 0
	u8 reserved_50[50];	     // = 0
} lacpdu_t;

typedef struct lacpdu_header {
	struct ad_header ad_header;
	struct lacpdu lacpdu;
} lacpdu_header_t;

// Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard)
typedef struct marker {
	u8 subtype;		 //  = 0x02  (marker PDU)
	u8 version_number;	 //  = 0x01
	u8 tlv_type;		 //  = 0x01  (marker information)
	//  = 0x02  (marker response information)
	u8 marker_length;	 //  = 0x16
	u16 requester_port;	 //   The number assigned to the port by the requester
	struct mac_addr requester_system;      //   The requester's system id
	u32 requester_transaction_id;	//   The transaction id allocated by the requester,
	u16 pad;		 //  = 0
	u8 tlv_type_terminator;	     //  = 0x00
	u8 terminator_length;	     //  = 0x00
	u8 reserved_90[90];	     //  = 0
} marker_t;

typedef struct marker_header {
	struct ad_header ad_header;
	struct marker marker;
} marker_header_t;

#pragma pack()

struct slave;
struct bonding;
struct ad_info;
struct port;

#ifdef __ia64__
#pragma pack(8)
#endif

// aggregator structure(43.4.5 in the 802.3ad standard)
typedef struct aggregator {
	struct mac_addr aggregator_mac_address;
	u16 aggregator_identifier;
	u16 is_individual;		 // BOOLEAN
	u16 actor_admin_aggregator_key;
	u16 actor_oper_aggregator_key;
	struct mac_addr partner_system;
	u16 partner_system_priority;
	u16 partner_oper_aggregator_key;
	u16 receive_state;		// BOOLEAN
	u16 transmit_state;		// BOOLEAN
	struct port *lag_ports;
	// ****** PRIVATE PARAMETERS ******
	struct slave *slave;	    // pointer to the bond slave that this aggregator belongs to
	u16 is_active;	    // BOOLEAN. Indicates if this aggregator is active
	u16 num_of_ports;
} aggregator_t;

// port structure(43.4.6 in the 802.3ad standard)
typedef struct port {
	u16 actor_port_number;
	u16 actor_port_priority;
	struct mac_addr actor_system;	       // This parameter is added here although it is not specified in the standard, just for simplification
	u16 actor_system_priority;	 // This parameter is added here although it is not specified in the standard, just for simplification
	u16 actor_port_aggregator_identifier;
	u16 ntt;			 // BOOLEAN
	u16 actor_admin_port_key;
	u16 actor_oper_port_key;
	u8 actor_admin_port_state;
	u8 actor_oper_port_state;
	struct mac_addr partner_admin_system;
	struct mac_addr partner_oper_system;
	u16 partner_admin_system_priority;
	u16 partner_oper_system_priority;
	u16 partner_admin_key;
	u16 partner_oper_key;
	u16 partner_admin_port_number;
	u16 partner_oper_port_number;
	u16 partner_admin_port_priority;
	u16 partner_oper_port_priority;
	u8 partner_admin_port_state;
	u8 partner_oper_port_state;
	u16 is_enabled;	      // BOOLEAN
	// ****** PRIVATE PARAMETERS ******
	u16 sm_vars;	      // all state machines variables for this port
	rx_states_t sm_rx_state;	// state machine rx state
	u16 sm_rx_timer_counter;    // state machine rx timer counter
	periodic_states_t sm_periodic_state;// state machine periodic state
	u16 sm_periodic_timer_counter;	// state machine periodic timer counter
	mux_states_t sm_mux_state;	// state machine mux state
	u16 sm_mux_timer_counter;   // state machine mux timer counter
	tx_states_t sm_tx_state;	// state machine tx state
	u16 sm_tx_timer_counter;    // state machine tx timer counter(allways on - enter to transmit state 3 time per second)
	struct slave *slave;	    // pointer to the bond slave that this port belongs to
	struct aggregator *aggregator;	   // pointer to an aggregator that this port related to
	struct port *next_port_in_aggregator; // Next port on the linked list of the parent aggregator
	u32 transaction_id;	    // continuous number for identification of Marker PDU's;
	struct lacpdu lacpdu;	       // the lacpdu that will be sent for this port
} port_t;

// system structure
typedef struct ad_system {
	u16 sys_priority;
	struct mac_addr sys_mac_addr;
} ad_system_t;

#ifdef __ia64__
#pragma pack()
#endif

// ================= AD Exported structures to the main bonding code ==================
#define BOND_AD_INFO(bond)   ((bond)->ad_info)
#define SLAVE_AD_INFO(slave) ((slave)->ad_info)

struct ad_bond_info {
	ad_system_t system;	    // 802.3ad system structure
	u32 agg_select_timer;	    // Timer to select aggregator after all adapter's hand shakes
	u32 agg_select_mode;	    // Mode of selection of active aggregator(bandwidth/count)
	int lacp_fast;		/* whether fast periodic tx should be
				 * requested
				 */
	struct timer_list ad_timer;
	struct packet_type ad_pkt_type;
};

struct ad_slave_info {
	struct aggregator aggregator;	    // 802.3ad aggregator structure
	struct port port;		    // 802.3ad port structure
	spinlock_t rx_machine_lock; // To avoid race condition between callback and receive interrupt
	u16 id;
};

// ================= AD Exported functions to the main bonding code ==================
void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution, int lacp_fast);
int  bond_3ad_bind_slave(struct slave *slave);
void bond_3ad_unbind_slave(struct slave *slave);
void bond_3ad_state_machine_handler(struct bonding *bond);
void bond_3ad_adapter_speed_changed(struct slave *slave);
void bond_3ad_adapter_duplex_changed(struct slave *slave);
void bond_3ad_handle_link_change(struct slave *slave, char link);
int  bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev);
int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type* ptype);
#endif //__BOND_3AD_H__
Commit	Line	Data
1da177e4 LT	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
	54	typedef struct mac_addr {
	55	u8 mac_addr_value[ETH_ALEN];
	56	} mac_addr_t;
	57
	58	typedef 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)
	64	typedef 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)
75	typedef 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)
84	typedef 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)
93	typedef enum {
94	AD_TX_DUMMY,
95	AD_TRANSMIT // tx Machine
96	} tx_states_t;
97
98	// rx indication types
99	typedef enum {
100	AD_TYPE_LACPDU = 1, // type lacpdu
101	AD_TYPE_MARKER // type marker
102	} pdu_type_t;
103
104	// rx marker indication types
105	typedef 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)
111	typedef 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
121	typedef 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)
128	typedef 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
158	typedef 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)
164	typedef 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
179	typedef struct marker_header {
180	struct ad_header ad_header;
181	struct marker marker;
182	} marker_header_t;
183
184	#pragma pack()
185
186	struct slave;
187	struct bonding;
188	struct ad_info;
189	struct port;
190
191	#ifdef __ia64__
192	#pragma pack(8)
193	#endif
194
195	// aggregator structure(43.4.5 in the 802.3ad standard)
196	typedef 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)
215	typedef 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
257	typedef 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
270	struct 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
281	struct 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 ==================
289	void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution, int lacp_fast);
290	int bond_3ad_bind_slave(struct slave *slave);
291	void bond_3ad_unbind_slave(struct slave *slave);
292	void bond_3ad_state_machine_handler(struct bonding *bond);
293	void bond_3ad_adapter_speed_changed(struct slave *slave);
294	void bond_3ad_adapter_duplex_changed(struct slave *slave);
295	void bond_3ad_handle_link_change(struct slave *slave, char link);
296	int bond_3ad_get_active_agg_info(struct bonding bond, struct ad_info ad_info);
297	int bond_3ad_xmit_xor(struct sk_buff skb, struct net_device dev);
298	int bond_3ad_lacpdu_recv(struct sk_buff skb, struct net_device dev, struct packet_type* ptype);
299	#endif //__BOND_3AD_H__
300