mirror of https://gitee.com/openkylin/linux.git
146 lines
6.1 KiB
C
146 lines
6.1 KiB
C
/*
|
|
* net/tipc/link.h: Include file for TIPC link code
|
|
*
|
|
* Copyright (c) 1995-2006, 2013-2014, Ericsson AB
|
|
* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the names of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _TIPC_LINK_H
|
|
#define _TIPC_LINK_H
|
|
|
|
#include <net/genetlink.h>
|
|
#include "msg.h"
|
|
#include "node.h"
|
|
|
|
/* TIPC-specific error codes
|
|
*/
|
|
#define ELINKCONG EAGAIN /* link congestion <=> resource unavailable */
|
|
|
|
/* Link FSM events:
|
|
*/
|
|
enum {
|
|
LINK_ESTABLISH_EVT = 0xec1ab1e,
|
|
LINK_PEER_RESET_EVT = 0x9eed0e,
|
|
LINK_FAILURE_EVT = 0xfa110e,
|
|
LINK_RESET_EVT = 0x10ca1d0e,
|
|
LINK_FAILOVER_BEGIN_EVT = 0xfa110bee,
|
|
LINK_FAILOVER_END_EVT = 0xfa110ede,
|
|
LINK_SYNCH_BEGIN_EVT = 0xc1ccbee,
|
|
LINK_SYNCH_END_EVT = 0xc1ccede
|
|
};
|
|
|
|
/* Events returned from link at packet reception or at timeout
|
|
*/
|
|
enum {
|
|
TIPC_LINK_UP_EVT = 1,
|
|
TIPC_LINK_DOWN_EVT = (1 << 1),
|
|
TIPC_LINK_SND_BC_ACK = (1 << 2)
|
|
};
|
|
|
|
/* Starting value for maximum packet size negotiation on unicast links
|
|
* (unless bearer MTU is less)
|
|
*/
|
|
#define MAX_PKT_DEFAULT 1500
|
|
|
|
bool tipc_link_create(struct net *net, char *if_name, int bearer_id,
|
|
int tolerance, char net_plane, u32 mtu, int priority,
|
|
int window, u32 session, u32 ownnode, u32 peer,
|
|
u16 peer_caps,
|
|
struct tipc_link *bc_sndlink,
|
|
struct tipc_link *bc_rcvlink,
|
|
struct sk_buff_head *inputq,
|
|
struct sk_buff_head *namedq,
|
|
struct tipc_link **link);
|
|
bool tipc_link_bc_create(struct net *net, u32 ownnode, u32 peer,
|
|
int mtu, int window, u16 peer_caps,
|
|
struct sk_buff_head *inputq,
|
|
struct sk_buff_head *namedq,
|
|
struct tipc_link *bc_sndlink,
|
|
struct tipc_link **link);
|
|
void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl,
|
|
int mtyp, struct sk_buff_head *xmitq);
|
|
void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
|
|
int tipc_link_fsm_evt(struct tipc_link *l, int evt);
|
|
bool tipc_link_is_up(struct tipc_link *l);
|
|
bool tipc_link_peer_is_down(struct tipc_link *l);
|
|
bool tipc_link_is_reset(struct tipc_link *l);
|
|
bool tipc_link_is_establishing(struct tipc_link *l);
|
|
bool tipc_link_is_synching(struct tipc_link *l);
|
|
bool tipc_link_is_failingover(struct tipc_link *l);
|
|
bool tipc_link_is_blocked(struct tipc_link *l);
|
|
void tipc_link_set_active(struct tipc_link *l, bool active);
|
|
void tipc_link_reset(struct tipc_link *l);
|
|
void tipc_link_reset_stats(struct tipc_link *l);
|
|
int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list,
|
|
struct sk_buff_head *xmitq);
|
|
struct sk_buff_head *tipc_link_inputq(struct tipc_link *l);
|
|
u16 tipc_link_rcv_nxt(struct tipc_link *l);
|
|
u16 tipc_link_acked(struct tipc_link *l);
|
|
u32 tipc_link_id(struct tipc_link *l);
|
|
char *tipc_link_name(struct tipc_link *l);
|
|
char tipc_link_plane(struct tipc_link *l);
|
|
int tipc_link_prio(struct tipc_link *l);
|
|
int tipc_link_window(struct tipc_link *l);
|
|
unsigned long tipc_link_tolerance(struct tipc_link *l);
|
|
void tipc_link_set_tolerance(struct tipc_link *l, u32 tol,
|
|
struct sk_buff_head *xmitq);
|
|
void tipc_link_set_prio(struct tipc_link *l, u32 prio,
|
|
struct sk_buff_head *xmitq);
|
|
void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit);
|
|
void tipc_link_set_queue_limits(struct tipc_link *l, u32 window);
|
|
int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
|
|
struct tipc_link *link, int nlflags);
|
|
int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
|
|
int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq);
|
|
int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb,
|
|
struct sk_buff_head *xmitq);
|
|
int tipc_link_build_ack_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
|
|
void tipc_link_add_bc_peer(struct tipc_link *snd_l,
|
|
struct tipc_link *uc_l,
|
|
struct sk_buff_head *xmitq);
|
|
void tipc_link_remove_bc_peer(struct tipc_link *snd_l,
|
|
struct tipc_link *rcv_l,
|
|
struct sk_buff_head *xmitq);
|
|
int tipc_link_bc_peers(struct tipc_link *l);
|
|
void tipc_link_set_mtu(struct tipc_link *l, int mtu);
|
|
int tipc_link_mtu(struct tipc_link *l);
|
|
void tipc_link_bc_ack_rcv(struct tipc_link *l, u16 acked,
|
|
struct sk_buff_head *xmitq);
|
|
void tipc_link_build_bc_sync_msg(struct tipc_link *l,
|
|
struct sk_buff_head *xmitq);
|
|
void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr);
|
|
void tipc_link_bc_sync_rcv(struct tipc_link *l, struct tipc_msg *hdr,
|
|
struct sk_buff_head *xmitq);
|
|
int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb,
|
|
struct sk_buff_head *xmitq);
|
|
#endif
|