mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-15 23:25:07 +00:00
5266698661
The code path for receiving broadcast packets is currently distinct from the unicast path. This leads to unnecessary code and data duplication, something that can be avoided with some effort. We now introduce separate per-peer tipc_link instances for handling broadcast packet reception. Each receive link keeps a pointer to the common, single, broadcast link instance, and can hence handle release and retransmission of send buffers as if they belonged to the own instance. Furthermore, we let each unicast link instance keep a reference to both the pertaining broadcast receive link, and to the common send link. This makes it possible for the unicast links to easily access data for broadcast link synchronization, as well as for carrying acknowledges for received broadcast packets. Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Reviewed-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
93 lines
3.8 KiB
C
93 lines
3.8 KiB
C
/*
|
|
* net/tipc/bcast.h: Include file for TIPC broadcast code
|
|
*
|
|
* Copyright (c) 2003-2006, 2014-2015, Ericsson AB
|
|
* Copyright (c) 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_BCAST_H
|
|
#define _TIPC_BCAST_H
|
|
|
|
#include "core.h"
|
|
|
|
struct tipc_node;
|
|
struct tipc_msg;
|
|
struct tipc_nl_msg;
|
|
struct tipc_node_map;
|
|
|
|
int tipc_bcast_init(struct net *net);
|
|
void tipc_bcast_reinit(struct net *net);
|
|
void tipc_bcast_stop(struct net *net);
|
|
void tipc_bcast_add_peer(struct net *net, u32 addr,
|
|
struct tipc_link *l,
|
|
struct sk_buff_head *xmitq);
|
|
void tipc_bcast_remove_peer(struct net *net, u32 addr,
|
|
struct tipc_link *rcv_bcl);
|
|
struct tipc_node *tipc_bclink_retransmit_to(struct net *tn);
|
|
void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked);
|
|
void tipc_bclink_rcv(struct net *net, struct sk_buff *buf);
|
|
u32 tipc_bclink_get_last_sent(struct net *net);
|
|
u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr);
|
|
void tipc_bclink_update_link_state(struct tipc_node *node,
|
|
u32 last_sent);
|
|
void tipc_bcbearer_sort(struct net *net, struct tipc_node_map *nm_ptr,
|
|
u32 node, bool action);
|
|
int tipc_bclink_reset_stats(struct net *net);
|
|
int tipc_bclink_set_queue_limits(struct net *net, u32 limit);
|
|
uint tipc_bcast_get_mtu(void);
|
|
int tipc_bcast_xmit(struct net *net, struct sk_buff_head *list);
|
|
int tipc_bcast_rcv(struct net *net, struct tipc_link *l, struct sk_buff *skb);
|
|
void tipc_bcast_ack_rcv(struct net *net, struct tipc_link *l, u32 acked);
|
|
void tipc_bcast_sync_rcv(struct net *net, struct tipc_link *l,
|
|
struct tipc_msg *hdr);
|
|
void tipc_bclink_wakeup_users(struct net *net);
|
|
int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg);
|
|
int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]);
|
|
void tipc_bclink_input(struct net *net);
|
|
void tipc_bclink_sync_state(struct tipc_node *n, struct tipc_msg *msg);
|
|
|
|
static inline void tipc_bcast_lock(struct net *net)
|
|
{
|
|
spin_lock_bh(&tipc_net(net)->bclock);
|
|
}
|
|
|
|
static inline void tipc_bcast_unlock(struct net *net)
|
|
{
|
|
spin_unlock_bh(&tipc_net(net)->bclock);
|
|
}
|
|
|
|
static inline struct tipc_link *tipc_bc_sndlink(struct net *net)
|
|
{
|
|
return tipc_net(net)->bcl;
|
|
}
|
|
|
|
#endif
|