group.c | Explore in Territory

/*
 * net/tipc/group.c: TIPC group messaging code
 *
 * Copyright (c) 2017, Ericsson AB
 * Copyright (c) 2020, Red Hat Inc
 * 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.
 */

#include "core.h"
#include "addr.h"
#include "group.h"
#include "bcast.h"
#include "topsrv.h"
#include "msg.h"
#include "socket.h"
#include "node.h"
#include "name_table.h"
#include "subscr.h"

#define ADV_UNIT …
#define ADV_IDLE …
#define ADV_ACTIVE …

enum mbr_state { … };

struct tipc_member { … };

struct tipc_group { … };

static void tipc_group_proto_xmit(struct tipc_group *grp, struct tipc_member *m,
				  int mtyp, struct sk_buff_head *xmitq);

static void tipc_group_open(struct tipc_member *m, bool *wakeup)
{ … }

static void tipc_group_decr_active(struct tipc_group *grp,
				   struct tipc_member *m)
{ … }

static int tipc_group_rcvbuf_limit(struct tipc_group *grp)
{ … }

u16 tipc_group_bc_snd_nxt(struct tipc_group *grp)
{ … }

static bool tipc_group_is_receiver(struct tipc_member *m)
{ … }

static bool tipc_group_is_sender(struct tipc_member *m)
{ … }

u32 tipc_group_exclude(struct tipc_group *grp)
{ … }

struct tipc_group *tipc_group_create(struct net *net, u32 portid,
				     struct tipc_group_req *mreq,
				     bool *group_is_open)
{ … }

void tipc_group_join(struct net *net, struct tipc_group *grp, int *sk_rcvbuf)
{ … }

void tipc_group_delete(struct net *net, struct tipc_group *grp)
{ … }

static struct tipc_member *tipc_group_find_member(struct tipc_group *grp,
						  u32 node, u32 port)
{ … }

static struct tipc_member *tipc_group_find_dest(struct tipc_group *grp,
						u32 node, u32 port)
{ … }

static struct tipc_member *tipc_group_find_node(struct tipc_group *grp,
						u32 node)
{ … }

static int tipc_group_add_to_tree(struct tipc_group *grp,
				  struct tipc_member *m)
{ … }

static struct tipc_member *tipc_group_create_member(struct tipc_group *grp,
						    u32 node, u32 port,
						    u32 instance, int state)
{ … }

void tipc_group_add_member(struct tipc_group *grp, u32 node,
			   u32 port, u32 instance)
{ … }

static void tipc_group_delete_member(struct tipc_group *grp,
				     struct tipc_member *m)
{ … }

struct tipc_nlist *tipc_group_dests(struct tipc_group *grp)
{ … }

void tipc_group_self(struct tipc_group *grp, struct tipc_service_range *seq,
		     int *scope)
{ … }

void tipc_group_update_member(struct tipc_member *m, int len)
{ … }

void tipc_group_update_bc_members(struct tipc_group *grp, int len, bool ack)
{ … }

bool tipc_group_cong(struct tipc_group *grp, u32 dnode, u32 dport,
		     int len, struct tipc_member **mbr)
{ … }

bool tipc_group_bc_cong(struct tipc_group *grp, int len)
{ … }

/* tipc_group_sort_msg() - sort msg into queue by bcast sequence number
 */
static void tipc_group_sort_msg(struct sk_buff *skb, struct sk_buff_head *defq)
{ … }

/* tipc_group_filter_msg() - determine if we should accept arriving message
 */
void tipc_group_filter_msg(struct tipc_group *grp, struct sk_buff_head *inputq,
			   struct sk_buff_head *xmitq)
{ … }

void tipc_group_update_rcv_win(struct tipc_group *grp, int blks, u32 node,
			       u32 port, struct sk_buff_head *xmitq)
{ … }

static void tipc_group_create_event(struct tipc_group *grp,
				    struct tipc_member *m,
				    u32 event, u16 seqno,
				    struct sk_buff_head *inputq)
{ … }

static void tipc_group_proto_xmit(struct tipc_group *grp, struct tipc_member *m,
				  int mtyp, struct sk_buff_head *xmitq)
{ … }

void tipc_group_proto_rcv(struct tipc_group *grp, bool *usr_wakeup,
			  struct tipc_msg *hdr, struct sk_buff_head *inputq,
			  struct sk_buff_head *xmitq)
{ … }

/* tipc_group_member_evt() - receive and handle a member up/down event
 */
void tipc_group_member_evt(struct tipc_group *grp,
			   bool *usr_wakeup,
			   int *sk_rcvbuf,
			   struct tipc_msg *hdr,
			   struct sk_buff_head *inputq,
			   struct sk_buff_head *xmitq)
{ … }

int tipc_group_fill_sock_diag(struct tipc_group *grp, struct sk_buff *skb)
{ … }
linux/net/tipc/group.c
