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1703 lines
41 KiB
1703 lines
41 KiB
/*
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* net/tipc/port.c: TIPC port code
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*
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* Copyright (c) 1992-2006, Ericsson AB
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* Copyright (c) 2004-2005, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "core.h"
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#include "config.h"
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#include "dbg.h"
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#include "port.h"
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#include "addr.h"
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#include "link.h"
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#include "node.h"
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#include "port.h"
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#include "name_table.h"
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#include "user_reg.h"
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#include "msg.h"
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#include "bcast.h"
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/* Connection management: */
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#define PROBING_INTERVAL 3600000 /* [ms] => 1 h */
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#define CONFIRMED 0
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#define PROBING 1
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#define MAX_REJECT_SIZE 1024
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static struct sk_buff *msg_queue_head = NULL;
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static struct sk_buff *msg_queue_tail = NULL;
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spinlock_t tipc_port_list_lock = SPIN_LOCK_UNLOCKED;
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static spinlock_t queue_lock = SPIN_LOCK_UNLOCKED;
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static LIST_HEAD(ports);
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static void port_handle_node_down(unsigned long ref);
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static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err);
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static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err);
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static void port_timeout(unsigned long ref);
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static u32 port_peernode(struct port *p_ptr)
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{
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return msg_destnode(&p_ptr->publ.phdr);
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}
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static u32 port_peerport(struct port *p_ptr)
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{
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return msg_destport(&p_ptr->publ.phdr);
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}
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static u32 port_out_seqno(struct port *p_ptr)
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{
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return msg_transp_seqno(&p_ptr->publ.phdr);
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}
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static void port_incr_out_seqno(struct port *p_ptr)
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{
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struct tipc_msg *m = &p_ptr->publ.phdr;
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if (likely(!msg_routed(m)))
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return;
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msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1));
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}
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/**
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* tipc_multicast - send a multicast message to local and remote destinations
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*/
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int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain,
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u32 num_sect, struct iovec const *msg_sect)
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{
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struct tipc_msg *hdr;
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struct sk_buff *buf;
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struct sk_buff *ibuf = NULL;
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struct port_list dports = {0, NULL, };
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struct port *oport = tipc_port_deref(ref);
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int ext_targets;
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int res;
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if (unlikely(!oport))
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return -EINVAL;
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/* Create multicast message */
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hdr = &oport->publ.phdr;
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msg_set_type(hdr, TIPC_MCAST_MSG);
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msg_set_nametype(hdr, seq->type);
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msg_set_namelower(hdr, seq->lower);
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msg_set_nameupper(hdr, seq->upper);
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msg_set_hdr_sz(hdr, MCAST_H_SIZE);
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res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE,
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!oport->user_port, &buf);
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if (unlikely(!buf))
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return res;
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/* Figure out where to send multicast message */
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ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper,
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TIPC_NODE_SCOPE, &dports);
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/* Send message to destinations (duplicate it only if necessary) */
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if (ext_targets) {
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if (dports.count != 0) {
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ibuf = skb_copy(buf, GFP_ATOMIC);
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if (ibuf == NULL) {
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tipc_port_list_free(&dports);
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buf_discard(buf);
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return -ENOMEM;
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}
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}
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res = tipc_bclink_send_msg(buf);
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if ((res < 0) && (dports.count != 0)) {
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buf_discard(ibuf);
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}
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} else {
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ibuf = buf;
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}
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if (res >= 0) {
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if (ibuf)
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tipc_port_recv_mcast(ibuf, &dports);
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} else {
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tipc_port_list_free(&dports);
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}
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return res;
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}
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/**
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* tipc_port_recv_mcast - deliver multicast message to all destination ports
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*
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* If there is no port list, perform a lookup to create one
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*/
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void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp)
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{
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struct tipc_msg* msg;
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struct port_list dports = {0, NULL, };
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struct port_list *item = dp;
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int cnt = 0;
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assert(buf);
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msg = buf_msg(buf);
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/* Create destination port list, if one wasn't supplied */
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if (dp == NULL) {
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tipc_nametbl_mc_translate(msg_nametype(msg),
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msg_namelower(msg),
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msg_nameupper(msg),
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TIPC_CLUSTER_SCOPE,
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&dports);
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item = dp = &dports;
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}
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/* Deliver a copy of message to each destination port */
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if (dp->count != 0) {
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if (dp->count == 1) {
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msg_set_destport(msg, dp->ports[0]);
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tipc_port_recv_msg(buf);
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tipc_port_list_free(dp);
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return;
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}
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for (; cnt < dp->count; cnt++) {
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int index = cnt % PLSIZE;
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struct sk_buff *b = skb_clone(buf, GFP_ATOMIC);
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if (b == NULL) {
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warn("Buffer allocation failure\n");
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msg_dbg(msg, "LOST:");
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goto exit;
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}
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if ((index == 0) && (cnt != 0)) {
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item = item->next;
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}
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msg_set_destport(buf_msg(b),item->ports[index]);
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tipc_port_recv_msg(b);
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}
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}
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exit:
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buf_discard(buf);
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tipc_port_list_free(dp);
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}
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/**
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* tipc_createport_raw - create a native TIPC port
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*
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* Returns local port reference
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*/
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u32 tipc_createport_raw(void *usr_handle,
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u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
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void (*wakeup)(struct tipc_port *),
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const u32 importance)
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{
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struct port *p_ptr;
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struct tipc_msg *msg;
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u32 ref;
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p_ptr = kmalloc(sizeof(*p_ptr), GFP_ATOMIC);
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if (p_ptr == NULL) {
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warn("Memory squeeze; failed to create port\n");
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return 0;
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}
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memset(p_ptr, 0, sizeof(*p_ptr));
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ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock);
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if (!ref) {
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warn("Reference Table Exhausted\n");
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kfree(p_ptr);
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return 0;
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}
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tipc_port_lock(ref);
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p_ptr->publ.ref = ref;
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msg = &p_ptr->publ.phdr;
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msg_init(msg, DATA_LOW, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, 0);
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msg_set_orignode(msg, tipc_own_addr);
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msg_set_prevnode(msg, tipc_own_addr);
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msg_set_origport(msg, ref);
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msg_set_importance(msg,importance);
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p_ptr->last_in_seqno = 41;
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p_ptr->sent = 1;
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p_ptr->publ.usr_handle = usr_handle;
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INIT_LIST_HEAD(&p_ptr->wait_list);
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INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
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p_ptr->congested_link = NULL;
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p_ptr->max_pkt = MAX_PKT_DEFAULT;
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p_ptr->dispatcher = dispatcher;
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p_ptr->wakeup = wakeup;
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p_ptr->user_port = NULL;
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k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
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spin_lock_bh(&tipc_port_list_lock);
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INIT_LIST_HEAD(&p_ptr->publications);
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INIT_LIST_HEAD(&p_ptr->port_list);
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list_add_tail(&p_ptr->port_list, &ports);
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spin_unlock_bh(&tipc_port_list_lock);
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tipc_port_unlock(p_ptr);
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return ref;
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}
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int tipc_deleteport(u32 ref)
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{
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struct port *p_ptr;
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struct sk_buff *buf = NULL;
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tipc_withdraw(ref, 0, NULL);
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p_ptr = tipc_port_lock(ref);
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if (!p_ptr)
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return -EINVAL;
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tipc_ref_discard(ref);
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tipc_port_unlock(p_ptr);
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k_cancel_timer(&p_ptr->timer);
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if (p_ptr->publ.connected) {
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buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
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tipc_nodesub_unsubscribe(&p_ptr->subscription);
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}
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if (p_ptr->user_port) {
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tipc_reg_remove_port(p_ptr->user_port);
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kfree(p_ptr->user_port);
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}
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spin_lock_bh(&tipc_port_list_lock);
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list_del(&p_ptr->port_list);
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list_del(&p_ptr->wait_list);
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spin_unlock_bh(&tipc_port_list_lock);
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k_term_timer(&p_ptr->timer);
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kfree(p_ptr);
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dbg("Deleted port %u\n", ref);
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tipc_net_route_msg(buf);
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return TIPC_OK;
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}
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/**
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* tipc_get_port() - return port associated with 'ref'
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*
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* Note: Port is not locked.
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*/
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struct tipc_port *tipc_get_port(const u32 ref)
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{
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return (struct tipc_port *)tipc_ref_deref(ref);
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}
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/**
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* tipc_get_handle - return user handle associated to port 'ref'
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*/
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void *tipc_get_handle(const u32 ref)
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{
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struct port *p_ptr;
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void * handle;
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p_ptr = tipc_port_lock(ref);
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if (!p_ptr)
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return NULL;
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handle = p_ptr->publ.usr_handle;
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tipc_port_unlock(p_ptr);
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return handle;
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}
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static int port_unreliable(struct port *p_ptr)
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{
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return msg_src_droppable(&p_ptr->publ.phdr);
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}
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int tipc_portunreliable(u32 ref, unsigned int *isunreliable)
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{
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struct port *p_ptr;
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p_ptr = tipc_port_lock(ref);
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if (!p_ptr)
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return -EINVAL;
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*isunreliable = port_unreliable(p_ptr);
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spin_unlock_bh(p_ptr->publ.lock);
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return TIPC_OK;
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}
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int tipc_set_portunreliable(u32 ref, unsigned int isunreliable)
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{
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struct port *p_ptr;
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p_ptr = tipc_port_lock(ref);
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if (!p_ptr)
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return -EINVAL;
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msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0));
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tipc_port_unlock(p_ptr);
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return TIPC_OK;
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}
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static int port_unreturnable(struct port *p_ptr)
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{
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return msg_dest_droppable(&p_ptr->publ.phdr);
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}
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int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable)
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{
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struct port *p_ptr;
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p_ptr = tipc_port_lock(ref);
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if (!p_ptr)
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return -EINVAL;
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*isunrejectable = port_unreturnable(p_ptr);
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spin_unlock_bh(p_ptr->publ.lock);
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return TIPC_OK;
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}
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int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable)
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{
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struct port *p_ptr;
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p_ptr = tipc_port_lock(ref);
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if (!p_ptr)
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return -EINVAL;
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msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0));
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tipc_port_unlock(p_ptr);
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return TIPC_OK;
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}
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|
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/*
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* port_build_proto_msg(): build a port level protocol
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* or a connection abortion message. Called with
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* tipc_port lock on.
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*/
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static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode,
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u32 origport, u32 orignode,
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u32 usr, u32 type, u32 err,
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u32 seqno, u32 ack)
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{
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struct sk_buff *buf;
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struct tipc_msg *msg;
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buf = buf_acquire(LONG_H_SIZE);
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if (buf) {
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msg = buf_msg(buf);
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msg_init(msg, usr, type, err, LONG_H_SIZE, destnode);
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msg_set_destport(msg, destport);
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msg_set_origport(msg, origport);
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msg_set_destnode(msg, destnode);
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msg_set_orignode(msg, orignode);
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msg_set_transp_seqno(msg, seqno);
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msg_set_msgcnt(msg, ack);
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msg_dbg(msg, "PORT>SEND>:");
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}
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return buf;
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}
|
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|
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int tipc_set_msg_option(struct tipc_port *tp_ptr, const char *opt, const u32 sz)
|
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{
|
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msg_expand(&tp_ptr->phdr, msg_destnode(&tp_ptr->phdr));
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msg_set_options(&tp_ptr->phdr, opt, sz);
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return TIPC_OK;
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}
|
|
|
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int tipc_reject_msg(struct sk_buff *buf, u32 err)
|
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{
|
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struct tipc_msg *msg = buf_msg(buf);
|
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struct sk_buff *rbuf;
|
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struct tipc_msg *rmsg;
|
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int hdr_sz;
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u32 imp = msg_importance(msg);
|
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u32 data_sz = msg_data_sz(msg);
|
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|
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if (data_sz > MAX_REJECT_SIZE)
|
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data_sz = MAX_REJECT_SIZE;
|
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if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE))
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imp++;
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msg_dbg(msg, "port->rej: ");
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|
|
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/* discard rejected message if it shouldn't be returned to sender */
|
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if (msg_errcode(msg) || msg_dest_droppable(msg)) {
|
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buf_discard(buf);
|
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return data_sz;
|
|
}
|
|
|
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/* construct rejected message */
|
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if (msg_mcast(msg))
|
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hdr_sz = MCAST_H_SIZE;
|
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else
|
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hdr_sz = LONG_H_SIZE;
|
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rbuf = buf_acquire(data_sz + hdr_sz);
|
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if (rbuf == NULL) {
|
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buf_discard(buf);
|
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return data_sz;
|
|
}
|
|
rmsg = buf_msg(rbuf);
|
|
msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg));
|
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msg_set_destport(rmsg, msg_origport(msg));
|
|
msg_set_prevnode(rmsg, tipc_own_addr);
|
|
msg_set_origport(rmsg, msg_destport(msg));
|
|
if (msg_short(msg))
|
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msg_set_orignode(rmsg, tipc_own_addr);
|
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else
|
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msg_set_orignode(rmsg, msg_destnode(msg));
|
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msg_set_size(rmsg, data_sz + hdr_sz);
|
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msg_set_nametype(rmsg, msg_nametype(msg));
|
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msg_set_nameinst(rmsg, msg_nameinst(msg));
|
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memcpy(rbuf->data + hdr_sz, msg_data(msg), data_sz);
|
|
|
|
/* send self-abort message when rejecting on a connected port */
|
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if (msg_connected(msg)) {
|
|
struct sk_buff *abuf = NULL;
|
|
struct port *p_ptr = tipc_port_lock(msg_destport(msg));
|
|
|
|
if (p_ptr) {
|
|
if (p_ptr->publ.connected)
|
|
abuf = port_build_self_abort_msg(p_ptr, err);
|
|
tipc_port_unlock(p_ptr);
|
|
}
|
|
tipc_net_route_msg(abuf);
|
|
}
|
|
|
|
/* send rejected message */
|
|
buf_discard(buf);
|
|
tipc_net_route_msg(rbuf);
|
|
return data_sz;
|
|
}
|
|
|
|
int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr,
|
|
struct iovec const *msg_sect, u32 num_sect,
|
|
int err)
|
|
{
|
|
struct sk_buff *buf;
|
|
int res;
|
|
|
|
res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE,
|
|
!p_ptr->user_port, &buf);
|
|
if (!buf)
|
|
return res;
|
|
|
|
return tipc_reject_msg(buf, err);
|
|
}
|
|
|
|
static void port_timeout(unsigned long ref)
|
|
{
|
|
struct port *p_ptr = tipc_port_lock(ref);
|
|
struct sk_buff *buf = NULL;
|
|
|
|
if (!p_ptr || !p_ptr->publ.connected)
|
|
return;
|
|
|
|
/* Last probe answered ? */
|
|
if (p_ptr->probing_state == PROBING) {
|
|
buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
|
|
} else {
|
|
buf = port_build_proto_msg(port_peerport(p_ptr),
|
|
port_peernode(p_ptr),
|
|
p_ptr->publ.ref,
|
|
tipc_own_addr,
|
|
CONN_MANAGER,
|
|
CONN_PROBE,
|
|
TIPC_OK,
|
|
port_out_seqno(p_ptr),
|
|
0);
|
|
port_incr_out_seqno(p_ptr);
|
|
p_ptr->probing_state = PROBING;
|
|
k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
|
|
}
|
|
tipc_port_unlock(p_ptr);
|
|
tipc_net_route_msg(buf);
|
|
}
|
|
|
|
|
|
static void port_handle_node_down(unsigned long ref)
|
|
{
|
|
struct port *p_ptr = tipc_port_lock(ref);
|
|
struct sk_buff* buf = NULL;
|
|
|
|
if (!p_ptr)
|
|
return;
|
|
buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE);
|
|
tipc_port_unlock(p_ptr);
|
|
tipc_net_route_msg(buf);
|
|
}
|
|
|
|
|
|
static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err)
|
|
{
|
|
u32 imp = msg_importance(&p_ptr->publ.phdr);
|
|
|
|
if (!p_ptr->publ.connected)
|
|
return NULL;
|
|
if (imp < TIPC_CRITICAL_IMPORTANCE)
|
|
imp++;
|
|
return port_build_proto_msg(p_ptr->publ.ref,
|
|
tipc_own_addr,
|
|
port_peerport(p_ptr),
|
|
port_peernode(p_ptr),
|
|
imp,
|
|
TIPC_CONN_MSG,
|
|
err,
|
|
p_ptr->last_in_seqno + 1,
|
|
0);
|
|
}
|
|
|
|
|
|
static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err)
|
|
{
|
|
u32 imp = msg_importance(&p_ptr->publ.phdr);
|
|
|
|
if (!p_ptr->publ.connected)
|
|
return NULL;
|
|
if (imp < TIPC_CRITICAL_IMPORTANCE)
|
|
imp++;
|
|
return port_build_proto_msg(port_peerport(p_ptr),
|
|
port_peernode(p_ptr),
|
|
p_ptr->publ.ref,
|
|
tipc_own_addr,
|
|
imp,
|
|
TIPC_CONN_MSG,
|
|
err,
|
|
port_out_seqno(p_ptr),
|
|
0);
|
|
}
|
|
|
|
void tipc_port_recv_proto_msg(struct sk_buff *buf)
|
|
{
|
|
struct tipc_msg *msg = buf_msg(buf);
|
|
struct port *p_ptr = tipc_port_lock(msg_destport(msg));
|
|
u32 err = TIPC_OK;
|
|
struct sk_buff *r_buf = NULL;
|
|
struct sk_buff *abort_buf = NULL;
|
|
|
|
msg_dbg(msg, "PORT<RECV<:");
|
|
|
|
if (!p_ptr) {
|
|
err = TIPC_ERR_NO_PORT;
|
|
} else if (p_ptr->publ.connected) {
|
|
if (port_peernode(p_ptr) != msg_orignode(msg))
|
|
err = TIPC_ERR_NO_PORT;
|
|
if (port_peerport(p_ptr) != msg_origport(msg))
|
|
err = TIPC_ERR_NO_PORT;
|
|
if (!err && msg_routed(msg)) {
|
|
u32 seqno = msg_transp_seqno(msg);
|
|
u32 myno = ++p_ptr->last_in_seqno;
|
|
if (seqno != myno) {
|
|
err = TIPC_ERR_NO_PORT;
|
|
abort_buf = port_build_self_abort_msg(p_ptr, err);
|
|
}
|
|
}
|
|
if (msg_type(msg) == CONN_ACK) {
|
|
int wakeup = tipc_port_congested(p_ptr) &&
|
|
p_ptr->publ.congested &&
|
|
p_ptr->wakeup;
|
|
p_ptr->acked += msg_msgcnt(msg);
|
|
if (tipc_port_congested(p_ptr))
|
|
goto exit;
|
|
p_ptr->publ.congested = 0;
|
|
if (!wakeup)
|
|
goto exit;
|
|
p_ptr->wakeup(&p_ptr->publ);
|
|
goto exit;
|
|
}
|
|
} else if (p_ptr->publ.published) {
|
|
err = TIPC_ERR_NO_PORT;
|
|
}
|
|
if (err) {
|
|
r_buf = port_build_proto_msg(msg_origport(msg),
|
|
msg_orignode(msg),
|
|
msg_destport(msg),
|
|
tipc_own_addr,
|
|
DATA_HIGH,
|
|
TIPC_CONN_MSG,
|
|
err,
|
|
0,
|
|
0);
|
|
goto exit;
|
|
}
|
|
|
|
/* All is fine */
|
|
if (msg_type(msg) == CONN_PROBE) {
|
|
r_buf = port_build_proto_msg(msg_origport(msg),
|
|
msg_orignode(msg),
|
|
msg_destport(msg),
|
|
tipc_own_addr,
|
|
CONN_MANAGER,
|
|
CONN_PROBE_REPLY,
|
|
TIPC_OK,
|
|
port_out_seqno(p_ptr),
|
|
0);
|
|
}
|
|
p_ptr->probing_state = CONFIRMED;
|
|
port_incr_out_seqno(p_ptr);
|
|
exit:
|
|
if (p_ptr)
|
|
tipc_port_unlock(p_ptr);
|
|
tipc_net_route_msg(r_buf);
|
|
tipc_net_route_msg(abort_buf);
|
|
buf_discard(buf);
|
|
}
|
|
|
|
static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id)
|
|
{
|
|
struct publication *publ;
|
|
|
|
if (full_id)
|
|
tipc_printf(buf, "<%u.%u.%u:%u>:",
|
|
tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr),
|
|
tipc_node(tipc_own_addr), p_ptr->publ.ref);
|
|
else
|
|
tipc_printf(buf, "%-10u:", p_ptr->publ.ref);
|
|
|
|
if (p_ptr->publ.connected) {
|
|
u32 dport = port_peerport(p_ptr);
|
|
u32 destnode = port_peernode(p_ptr);
|
|
|
|
tipc_printf(buf, " connected to <%u.%u.%u:%u>",
|
|
tipc_zone(destnode), tipc_cluster(destnode),
|
|
tipc_node(destnode), dport);
|
|
if (p_ptr->publ.conn_type != 0)
|
|
tipc_printf(buf, " via {%u,%u}",
|
|
p_ptr->publ.conn_type,
|
|
p_ptr->publ.conn_instance);
|
|
}
|
|
else if (p_ptr->publ.published) {
|
|
tipc_printf(buf, " bound to");
|
|
list_for_each_entry(publ, &p_ptr->publications, pport_list) {
|
|
if (publ->lower == publ->upper)
|
|
tipc_printf(buf, " {%u,%u}", publ->type,
|
|
publ->lower);
|
|
else
|
|
tipc_printf(buf, " {%u,%u,%u}", publ->type,
|
|
publ->lower, publ->upper);
|
|
}
|
|
}
|
|
tipc_printf(buf, "\n");
|
|
}
|
|
|
|
#define MAX_PORT_QUERY 32768
|
|
|
|
struct sk_buff *tipc_port_get_ports(void)
|
|
{
|
|
struct sk_buff *buf;
|
|
struct tlv_desc *rep_tlv;
|
|
struct print_buf pb;
|
|
struct port *p_ptr;
|
|
int str_len;
|
|
|
|
buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY));
|
|
if (!buf)
|
|
return NULL;
|
|
rep_tlv = (struct tlv_desc *)buf->data;
|
|
|
|
tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY);
|
|
spin_lock_bh(&tipc_port_list_lock);
|
|
list_for_each_entry(p_ptr, &ports, port_list) {
|
|
spin_lock_bh(p_ptr->publ.lock);
|
|
port_print(p_ptr, &pb, 0);
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
}
|
|
spin_unlock_bh(&tipc_port_list_lock);
|
|
str_len = tipc_printbuf_validate(&pb);
|
|
|
|
skb_put(buf, TLV_SPACE(str_len));
|
|
TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
|
|
|
|
return buf;
|
|
}
|
|
|
|
#if 0
|
|
|
|
#define MAX_PORT_STATS 2000
|
|
|
|
struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space)
|
|
{
|
|
u32 ref;
|
|
struct port *p_ptr;
|
|
struct sk_buff *buf;
|
|
struct tlv_desc *rep_tlv;
|
|
struct print_buf pb;
|
|
int str_len;
|
|
|
|
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF))
|
|
return cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
|
|
|
|
ref = *(u32 *)TLV_DATA(req_tlv_area);
|
|
ref = ntohl(ref);
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return cfg_reply_error_string("port not found");
|
|
|
|
buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS));
|
|
if (!buf) {
|
|
tipc_port_unlock(p_ptr);
|
|
return NULL;
|
|
}
|
|
rep_tlv = (struct tlv_desc *)buf->data;
|
|
|
|
tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS);
|
|
port_print(p_ptr, &pb, 1);
|
|
/* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */
|
|
tipc_port_unlock(p_ptr);
|
|
str_len = tipc_printbuf_validate(&pb);
|
|
|
|
skb_put(buf, TLV_SPACE(str_len));
|
|
TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
|
|
|
|
return buf;
|
|
}
|
|
|
|
#endif
|
|
|
|
void tipc_port_reinit(void)
|
|
{
|
|
struct port *p_ptr;
|
|
struct tipc_msg *msg;
|
|
|
|
spin_lock_bh(&tipc_port_list_lock);
|
|
list_for_each_entry(p_ptr, &ports, port_list) {
|
|
msg = &p_ptr->publ.phdr;
|
|
if (msg_orignode(msg) == tipc_own_addr)
|
|
break;
|
|
msg_set_orignode(msg, tipc_own_addr);
|
|
}
|
|
spin_unlock_bh(&tipc_port_list_lock);
|
|
}
|
|
|
|
|
|
/*
|
|
* port_dispatcher_sigh(): Signal handler for messages destinated
|
|
* to the tipc_port interface.
|
|
*/
|
|
|
|
static void port_dispatcher_sigh(void *dummy)
|
|
{
|
|
struct sk_buff *buf;
|
|
|
|
spin_lock_bh(&queue_lock);
|
|
buf = msg_queue_head;
|
|
msg_queue_head = NULL;
|
|
spin_unlock_bh(&queue_lock);
|
|
|
|
while (buf) {
|
|
struct port *p_ptr;
|
|
struct user_port *up_ptr;
|
|
struct tipc_portid orig;
|
|
struct tipc_name_seq dseq;
|
|
void *usr_handle;
|
|
int connected;
|
|
int published;
|
|
|
|
struct sk_buff *next = buf->next;
|
|
struct tipc_msg *msg = buf_msg(buf);
|
|
u32 dref = msg_destport(msg);
|
|
|
|
p_ptr = tipc_port_lock(dref);
|
|
if (!p_ptr) {
|
|
/* Port deleted while msg in queue */
|
|
tipc_reject_msg(buf, TIPC_ERR_NO_PORT);
|
|
buf = next;
|
|
continue;
|
|
}
|
|
orig.ref = msg_origport(msg);
|
|
orig.node = msg_orignode(msg);
|
|
up_ptr = p_ptr->user_port;
|
|
usr_handle = up_ptr->usr_handle;
|
|
connected = p_ptr->publ.connected;
|
|
published = p_ptr->publ.published;
|
|
|
|
if (unlikely(msg_errcode(msg)))
|
|
goto err;
|
|
|
|
switch (msg_type(msg)) {
|
|
|
|
case TIPC_CONN_MSG:{
|
|
tipc_conn_msg_event cb = up_ptr->conn_msg_cb;
|
|
u32 peer_port = port_peerport(p_ptr);
|
|
u32 peer_node = port_peernode(p_ptr);
|
|
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
if (unlikely(!connected)) {
|
|
if (unlikely(published))
|
|
goto reject;
|
|
tipc_connect2port(dref,&orig);
|
|
}
|
|
if (unlikely(msg_origport(msg) != peer_port))
|
|
goto reject;
|
|
if (unlikely(msg_orignode(msg) != peer_node))
|
|
goto reject;
|
|
if (unlikely(!cb))
|
|
goto reject;
|
|
if (unlikely(++p_ptr->publ.conn_unacked >=
|
|
TIPC_FLOW_CONTROL_WIN))
|
|
tipc_acknowledge(dref,
|
|
p_ptr->publ.conn_unacked);
|
|
skb_pull(buf, msg_hdr_sz(msg));
|
|
cb(usr_handle, dref, &buf, msg_data(msg),
|
|
msg_data_sz(msg));
|
|
break;
|
|
}
|
|
case TIPC_DIRECT_MSG:{
|
|
tipc_msg_event cb = up_ptr->msg_cb;
|
|
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
if (unlikely(connected))
|
|
goto reject;
|
|
if (unlikely(!cb))
|
|
goto reject;
|
|
skb_pull(buf, msg_hdr_sz(msg));
|
|
cb(usr_handle, dref, &buf, msg_data(msg),
|
|
msg_data_sz(msg), msg_importance(msg),
|
|
&orig);
|
|
break;
|
|
}
|
|
case TIPC_NAMED_MSG:{
|
|
tipc_named_msg_event cb = up_ptr->named_msg_cb;
|
|
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
if (unlikely(connected))
|
|
goto reject;
|
|
if (unlikely(!cb))
|
|
goto reject;
|
|
if (unlikely(!published))
|
|
goto reject;
|
|
dseq.type = msg_nametype(msg);
|
|
dseq.lower = msg_nameinst(msg);
|
|
dseq.upper = dseq.lower;
|
|
skb_pull(buf, msg_hdr_sz(msg));
|
|
cb(usr_handle, dref, &buf, msg_data(msg),
|
|
msg_data_sz(msg), msg_importance(msg),
|
|
&orig, &dseq);
|
|
break;
|
|
}
|
|
}
|
|
if (buf)
|
|
buf_discard(buf);
|
|
buf = next;
|
|
continue;
|
|
err:
|
|
switch (msg_type(msg)) {
|
|
|
|
case TIPC_CONN_MSG:{
|
|
tipc_conn_shutdown_event cb =
|
|
up_ptr->conn_err_cb;
|
|
u32 peer_port = port_peerport(p_ptr);
|
|
u32 peer_node = port_peernode(p_ptr);
|
|
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
if (!connected || !cb)
|
|
break;
|
|
if (msg_origport(msg) != peer_port)
|
|
break;
|
|
if (msg_orignode(msg) != peer_node)
|
|
break;
|
|
tipc_disconnect(dref);
|
|
skb_pull(buf, msg_hdr_sz(msg));
|
|
cb(usr_handle, dref, &buf, msg_data(msg),
|
|
msg_data_sz(msg), msg_errcode(msg));
|
|
break;
|
|
}
|
|
case TIPC_DIRECT_MSG:{
|
|
tipc_msg_err_event cb = up_ptr->err_cb;
|
|
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
if (connected || !cb)
|
|
break;
|
|
skb_pull(buf, msg_hdr_sz(msg));
|
|
cb(usr_handle, dref, &buf, msg_data(msg),
|
|
msg_data_sz(msg), msg_errcode(msg), &orig);
|
|
break;
|
|
}
|
|
case TIPC_NAMED_MSG:{
|
|
tipc_named_msg_err_event cb =
|
|
up_ptr->named_err_cb;
|
|
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
if (connected || !cb)
|
|
break;
|
|
dseq.type = msg_nametype(msg);
|
|
dseq.lower = msg_nameinst(msg);
|
|
dseq.upper = dseq.lower;
|
|
skb_pull(buf, msg_hdr_sz(msg));
|
|
cb(usr_handle, dref, &buf, msg_data(msg),
|
|
msg_data_sz(msg), msg_errcode(msg), &dseq);
|
|
break;
|
|
}
|
|
}
|
|
if (buf)
|
|
buf_discard(buf);
|
|
buf = next;
|
|
continue;
|
|
reject:
|
|
tipc_reject_msg(buf, TIPC_ERR_NO_PORT);
|
|
buf = next;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* port_dispatcher(): Dispatcher for messages destinated
|
|
* to the tipc_port interface. Called with port locked.
|
|
*/
|
|
|
|
static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf)
|
|
{
|
|
buf->next = NULL;
|
|
spin_lock_bh(&queue_lock);
|
|
if (msg_queue_head) {
|
|
msg_queue_tail->next = buf;
|
|
msg_queue_tail = buf;
|
|
} else {
|
|
msg_queue_tail = msg_queue_head = buf;
|
|
tipc_k_signal((Handler)port_dispatcher_sigh, 0);
|
|
}
|
|
spin_unlock_bh(&queue_lock);
|
|
return TIPC_OK;
|
|
}
|
|
|
|
/*
|
|
* Wake up port after congestion: Called with port locked,
|
|
*
|
|
*/
|
|
|
|
static void port_wakeup_sh(unsigned long ref)
|
|
{
|
|
struct port *p_ptr;
|
|
struct user_port *up_ptr;
|
|
tipc_continue_event cb = NULL;
|
|
void *uh = NULL;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (p_ptr) {
|
|
up_ptr = p_ptr->user_port;
|
|
if (up_ptr) {
|
|
cb = up_ptr->continue_event_cb;
|
|
uh = up_ptr->usr_handle;
|
|
}
|
|
tipc_port_unlock(p_ptr);
|
|
}
|
|
if (cb)
|
|
cb(uh, ref);
|
|
}
|
|
|
|
|
|
static void port_wakeup(struct tipc_port *p_ptr)
|
|
{
|
|
tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref);
|
|
}
|
|
|
|
void tipc_acknowledge(u32 ref, u32 ack)
|
|
{
|
|
struct port *p_ptr;
|
|
struct sk_buff *buf = NULL;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return;
|
|
if (p_ptr->publ.connected) {
|
|
p_ptr->publ.conn_unacked -= ack;
|
|
buf = port_build_proto_msg(port_peerport(p_ptr),
|
|
port_peernode(p_ptr),
|
|
ref,
|
|
tipc_own_addr,
|
|
CONN_MANAGER,
|
|
CONN_ACK,
|
|
TIPC_OK,
|
|
port_out_seqno(p_ptr),
|
|
ack);
|
|
}
|
|
tipc_port_unlock(p_ptr);
|
|
tipc_net_route_msg(buf);
|
|
}
|
|
|
|
/*
|
|
* tipc_createport(): user level call. Will add port to
|
|
* registry if non-zero user_ref.
|
|
*/
|
|
|
|
int tipc_createport(u32 user_ref,
|
|
void *usr_handle,
|
|
unsigned int importance,
|
|
tipc_msg_err_event error_cb,
|
|
tipc_named_msg_err_event named_error_cb,
|
|
tipc_conn_shutdown_event conn_error_cb,
|
|
tipc_msg_event msg_cb,
|
|
tipc_named_msg_event named_msg_cb,
|
|
tipc_conn_msg_event conn_msg_cb,
|
|
tipc_continue_event continue_event_cb,/* May be zero */
|
|
u32 *portref)
|
|
{
|
|
struct user_port *up_ptr;
|
|
struct port *p_ptr;
|
|
u32 ref;
|
|
|
|
up_ptr = (struct user_port *)kmalloc(sizeof(*up_ptr), GFP_ATOMIC);
|
|
if (up_ptr == NULL) {
|
|
return -ENOMEM;
|
|
}
|
|
ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance);
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr) {
|
|
kfree(up_ptr);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
p_ptr->user_port = up_ptr;
|
|
up_ptr->user_ref = user_ref;
|
|
up_ptr->usr_handle = usr_handle;
|
|
up_ptr->ref = p_ptr->publ.ref;
|
|
up_ptr->err_cb = error_cb;
|
|
up_ptr->named_err_cb = named_error_cb;
|
|
up_ptr->conn_err_cb = conn_error_cb;
|
|
up_ptr->msg_cb = msg_cb;
|
|
up_ptr->named_msg_cb = named_msg_cb;
|
|
up_ptr->conn_msg_cb = conn_msg_cb;
|
|
up_ptr->continue_event_cb = continue_event_cb;
|
|
INIT_LIST_HEAD(&up_ptr->uport_list);
|
|
tipc_reg_add_port(up_ptr);
|
|
*portref = p_ptr->publ.ref;
|
|
dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref);
|
|
tipc_port_unlock(p_ptr);
|
|
return TIPC_OK;
|
|
}
|
|
|
|
int tipc_ownidentity(u32 ref, struct tipc_portid *id)
|
|
{
|
|
id->ref = ref;
|
|
id->node = tipc_own_addr;
|
|
return TIPC_OK;
|
|
}
|
|
|
|
int tipc_portimportance(u32 ref, unsigned int *importance)
|
|
{
|
|
struct port *p_ptr;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
*importance = (unsigned int)msg_importance(&p_ptr->publ.phdr);
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
return TIPC_OK;
|
|
}
|
|
|
|
int tipc_set_portimportance(u32 ref, unsigned int imp)
|
|
{
|
|
struct port *p_ptr;
|
|
|
|
if (imp > TIPC_CRITICAL_IMPORTANCE)
|
|
return -EINVAL;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
msg_set_importance(&p_ptr->publ.phdr, (u32)imp);
|
|
spin_unlock_bh(p_ptr->publ.lock);
|
|
return TIPC_OK;
|
|
}
|
|
|
|
|
|
int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq)
|
|
{
|
|
struct port *p_ptr;
|
|
struct publication *publ;
|
|
u32 key;
|
|
int res = -EINVAL;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, "
|
|
"lower = %u, upper = %u\n",
|
|
ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
if (p_ptr->publ.connected)
|
|
goto exit;
|
|
if (seq->lower > seq->upper)
|
|
goto exit;
|
|
if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE))
|
|
goto exit;
|
|
key = ref + p_ptr->pub_count + 1;
|
|
if (key == ref) {
|
|
res = -EADDRINUSE;
|
|
goto exit;
|
|
}
|
|
publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper,
|
|
scope, p_ptr->publ.ref, key);
|
|
if (publ) {
|
|
list_add(&publ->pport_list, &p_ptr->publications);
|
|
p_ptr->pub_count++;
|
|
p_ptr->publ.published = 1;
|
|
res = TIPC_OK;
|
|
}
|
|
exit:
|
|
tipc_port_unlock(p_ptr);
|
|
return res;
|
|
}
|
|
|
|
int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq)
|
|
{
|
|
struct port *p_ptr;
|
|
struct publication *publ;
|
|
struct publication *tpubl;
|
|
int res = -EINVAL;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
if (!p_ptr->publ.published)
|
|
goto exit;
|
|
if (!seq) {
|
|
list_for_each_entry_safe(publ, tpubl,
|
|
&p_ptr->publications, pport_list) {
|
|
tipc_nametbl_withdraw(publ->type, publ->lower,
|
|
publ->ref, publ->key);
|
|
}
|
|
res = TIPC_OK;
|
|
} else {
|
|
list_for_each_entry_safe(publ, tpubl,
|
|
&p_ptr->publications, pport_list) {
|
|
if (publ->scope != scope)
|
|
continue;
|
|
if (publ->type != seq->type)
|
|
continue;
|
|
if (publ->lower != seq->lower)
|
|
continue;
|
|
if (publ->upper != seq->upper)
|
|
break;
|
|
tipc_nametbl_withdraw(publ->type, publ->lower,
|
|
publ->ref, publ->key);
|
|
res = TIPC_OK;
|
|
break;
|
|
}
|
|
}
|
|
if (list_empty(&p_ptr->publications))
|
|
p_ptr->publ.published = 0;
|
|
exit:
|
|
tipc_port_unlock(p_ptr);
|
|
return res;
|
|
}
|
|
|
|
int tipc_connect2port(u32 ref, struct tipc_portid const *peer)
|
|
{
|
|
struct port *p_ptr;
|
|
struct tipc_msg *msg;
|
|
int res = -EINVAL;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
if (p_ptr->publ.published || p_ptr->publ.connected)
|
|
goto exit;
|
|
if (!peer->ref)
|
|
goto exit;
|
|
|
|
msg = &p_ptr->publ.phdr;
|
|
msg_set_destnode(msg, peer->node);
|
|
msg_set_destport(msg, peer->ref);
|
|
msg_set_orignode(msg, tipc_own_addr);
|
|
msg_set_origport(msg, p_ptr->publ.ref);
|
|
msg_set_transp_seqno(msg, 42);
|
|
msg_set_type(msg, TIPC_CONN_MSG);
|
|
if (!may_route(peer->node))
|
|
msg_set_hdr_sz(msg, SHORT_H_SIZE);
|
|
else
|
|
msg_set_hdr_sz(msg, LONG_H_SIZE);
|
|
|
|
p_ptr->probing_interval = PROBING_INTERVAL;
|
|
p_ptr->probing_state = CONFIRMED;
|
|
p_ptr->publ.connected = 1;
|
|
k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
|
|
|
|
tipc_nodesub_subscribe(&p_ptr->subscription,peer->node,
|
|
(void *)(unsigned long)ref,
|
|
(net_ev_handler)port_handle_node_down);
|
|
res = TIPC_OK;
|
|
exit:
|
|
tipc_port_unlock(p_ptr);
|
|
p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref);
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* tipc_disconnect(): Disconnect port form peer.
|
|
* This is a node local operation.
|
|
*/
|
|
|
|
int tipc_disconnect(u32 ref)
|
|
{
|
|
struct port *p_ptr;
|
|
int res = -ENOTCONN;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
if (p_ptr->publ.connected) {
|
|
p_ptr->publ.connected = 0;
|
|
/* let timer expire on it's own to avoid deadlock! */
|
|
tipc_nodesub_unsubscribe(&p_ptr->subscription);
|
|
res = TIPC_OK;
|
|
}
|
|
tipc_port_unlock(p_ptr);
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect
|
|
*/
|
|
int tipc_shutdown(u32 ref)
|
|
{
|
|
struct port *p_ptr;
|
|
struct sk_buff *buf = NULL;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
|
|
if (p_ptr->publ.connected) {
|
|
u32 imp = msg_importance(&p_ptr->publ.phdr);
|
|
if (imp < TIPC_CRITICAL_IMPORTANCE)
|
|
imp++;
|
|
buf = port_build_proto_msg(port_peerport(p_ptr),
|
|
port_peernode(p_ptr),
|
|
ref,
|
|
tipc_own_addr,
|
|
imp,
|
|
TIPC_CONN_MSG,
|
|
TIPC_CONN_SHUTDOWN,
|
|
port_out_seqno(p_ptr),
|
|
0);
|
|
}
|
|
tipc_port_unlock(p_ptr);
|
|
tipc_net_route_msg(buf);
|
|
return tipc_disconnect(ref);
|
|
}
|
|
|
|
int tipc_isconnected(u32 ref, int *isconnected)
|
|
{
|
|
struct port *p_ptr;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
*isconnected = p_ptr->publ.connected;
|
|
tipc_port_unlock(p_ptr);
|
|
return TIPC_OK;
|
|
}
|
|
|
|
int tipc_peer(u32 ref, struct tipc_portid *peer)
|
|
{
|
|
struct port *p_ptr;
|
|
int res;
|
|
|
|
p_ptr = tipc_port_lock(ref);
|
|
if (!p_ptr)
|
|
return -EINVAL;
|
|
if (p_ptr->publ.connected) {
|
|
peer->ref = port_peerport(p_ptr);
|
|
peer->node = port_peernode(p_ptr);
|
|
res = TIPC_OK;
|
|
} else
|
|
res = -ENOTCONN;
|
|
tipc_port_unlock(p_ptr);
|
|
return res;
|
|
}
|
|
|
|
int tipc_ref_valid(u32 ref)
|
|
{
|
|
/* Works irrespective of type */
|
|
return !!tipc_ref_deref(ref);
|
|
}
|
|
|
|
|
|
/*
|
|
* tipc_port_recv_sections(): Concatenate and deliver sectioned
|
|
* message for this node.
|
|
*/
|
|
|
|
int tipc_port_recv_sections(struct port *sender, unsigned int num_sect,
|
|
struct iovec const *msg_sect)
|
|
{
|
|
struct sk_buff *buf;
|
|
int res;
|
|
|
|
res = msg_build(&sender->publ.phdr, msg_sect, num_sect,
|
|
MAX_MSG_SIZE, !sender->user_port, &buf);
|
|
if (likely(buf))
|
|
tipc_port_recv_msg(buf);
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* tipc_send - send message sections on connection
|
|
*/
|
|
|
|
int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect)
|
|
{
|
|
struct port *p_ptr;
|
|
u32 destnode;
|
|
int res;
|
|
|
|
p_ptr = tipc_port_deref(ref);
|
|
if (!p_ptr || !p_ptr->publ.connected)
|
|
return -EINVAL;
|
|
|
|
p_ptr->publ.congested = 1;
|
|
if (!tipc_port_congested(p_ptr)) {
|
|
destnode = port_peernode(p_ptr);
|
|
if (likely(destnode != tipc_own_addr))
|
|
res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect,
|
|
destnode);
|
|
else
|
|
res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
|
|
|
|
if (likely(res != -ELINKCONG)) {
|
|
port_incr_out_seqno(p_ptr);
|
|
p_ptr->publ.congested = 0;
|
|
p_ptr->sent++;
|
|
return res;
|
|
}
|
|
}
|
|
if (port_unreliable(p_ptr)) {
|
|
p_ptr->publ.congested = 0;
|
|
/* Just calculate msg length and return */
|
|
return msg_calc_data_size(msg_sect, num_sect);
|
|
}
|
|
return -ELINKCONG;
|
|
}
|
|
|
|
/**
|
|
* tipc_send_buf - send message buffer on connection
|
|
*/
|
|
|
|
int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz)
|
|
{
|
|
struct port *p_ptr;
|
|
struct tipc_msg *msg;
|
|
u32 destnode;
|
|
u32 hsz;
|
|
u32 sz;
|
|
u32 res;
|
|
|
|
p_ptr = tipc_port_deref(ref);
|
|
if (!p_ptr || !p_ptr->publ.connected)
|
|
return -EINVAL;
|
|
|
|
msg = &p_ptr->publ.phdr;
|
|
hsz = msg_hdr_sz(msg);
|
|
sz = hsz + dsz;
|
|
msg_set_size(msg, sz);
|
|
if (skb_cow(buf, hsz))
|
|
return -ENOMEM;
|
|
|
|
skb_push(buf, hsz);
|
|
memcpy(buf->data, (unchar *)msg, hsz);
|
|
destnode = msg_destnode(msg);
|
|
p_ptr->publ.congested = 1;
|
|
if (!tipc_port_congested(p_ptr)) {
|
|
if (likely(destnode != tipc_own_addr))
|
|
res = tipc_send_buf_fast(buf, destnode);
|
|
else {
|
|
tipc_port_recv_msg(buf);
|
|
res = sz;
|
|
}
|
|
if (likely(res != -ELINKCONG)) {
|
|
port_incr_out_seqno(p_ptr);
|
|
p_ptr->sent++;
|
|
p_ptr->publ.congested = 0;
|
|
return res;
|
|
}
|
|
}
|
|
if (port_unreliable(p_ptr)) {
|
|
p_ptr->publ.congested = 0;
|
|
return dsz;
|
|
}
|
|
return -ELINKCONG;
|
|
}
|
|
|
|
/**
|
|
* tipc_forward2name - forward message sections to port name
|
|
*/
|
|
|
|
int tipc_forward2name(u32 ref,
|
|
struct tipc_name const *name,
|
|
u32 domain,
|
|
u32 num_sect,
|
|
struct iovec const *msg_sect,
|
|
struct tipc_portid const *orig,
|
|
unsigned int importance)
|
|
{
|
|
struct port *p_ptr;
|
|
struct tipc_msg *msg;
|
|
u32 destnode = domain;
|
|
u32 destport = 0;
|
|
int res;
|
|
|
|
p_ptr = tipc_port_deref(ref);
|
|
if (!p_ptr || p_ptr->publ.connected)
|
|
return -EINVAL;
|
|
|
|
msg = &p_ptr->publ.phdr;
|
|
msg_set_type(msg, TIPC_NAMED_MSG);
|
|
msg_set_orignode(msg, orig->node);
|
|
msg_set_origport(msg, orig->ref);
|
|
msg_set_hdr_sz(msg, LONG_H_SIZE);
|
|
msg_set_nametype(msg, name->type);
|
|
msg_set_nameinst(msg, name->instance);
|
|
msg_set_lookup_scope(msg, addr_scope(domain));
|
|
if (importance <= TIPC_CRITICAL_IMPORTANCE)
|
|
msg_set_importance(msg,importance);
|
|
destport = tipc_nametbl_translate(name->type, name->instance, &destnode);
|
|
msg_set_destnode(msg, destnode);
|
|
msg_set_destport(msg, destport);
|
|
|
|
if (likely(destport || destnode)) {
|
|
p_ptr->sent++;
|
|
if (likely(destnode == tipc_own_addr))
|
|
return tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
|
|
res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect,
|
|
destnode);
|
|
if (likely(res != -ELINKCONG))
|
|
return res;
|
|
if (port_unreliable(p_ptr)) {
|
|
/* Just calculate msg length and return */
|
|
return msg_calc_data_size(msg_sect, num_sect);
|
|
}
|
|
return -ELINKCONG;
|
|
}
|
|
return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect,
|
|
TIPC_ERR_NO_NAME);
|
|
}
|
|
|
|
/**
|
|
* tipc_send2name - send message sections to port name
|
|
*/
|
|
|
|
int tipc_send2name(u32 ref,
|
|
struct tipc_name const *name,
|
|
unsigned int domain,
|
|
unsigned int num_sect,
|
|
struct iovec const *msg_sect)
|
|
{
|
|
struct tipc_portid orig;
|
|
|
|
orig.ref = ref;
|
|
orig.node = tipc_own_addr;
|
|
return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig,
|
|
TIPC_PORT_IMPORTANCE);
|
|
}
|
|
|
|
/**
|
|
* tipc_forward_buf2name - forward message buffer to port name
|
|
*/
|
|
|
|
int tipc_forward_buf2name(u32 ref,
|
|
struct tipc_name const *name,
|
|
u32 domain,
|
|
struct sk_buff *buf,
|
|
unsigned int dsz,
|
|
struct tipc_portid const *orig,
|
|
unsigned int importance)
|
|
{
|
|
struct port *p_ptr;
|
|
struct tipc_msg *msg;
|
|
u32 destnode = domain;
|
|
u32 destport = 0;
|
|
int res;
|
|
|
|
p_ptr = (struct port *)tipc_ref_deref(ref);
|
|
if (!p_ptr || p_ptr->publ.connected)
|
|
return -EINVAL;
|
|
|
|
msg = &p_ptr->publ.phdr;
|
|
if (importance <= TIPC_CRITICAL_IMPORTANCE)
|
|
msg_set_importance(msg, importance);
|
|
msg_set_type(msg, TIPC_NAMED_MSG);
|
|
msg_set_orignode(msg, orig->node);
|
|
msg_set_origport(msg, orig->ref);
|
|
msg_set_nametype(msg, name->type);
|
|
msg_set_nameinst(msg, name->instance);
|
|
msg_set_lookup_scope(msg, addr_scope(domain));
|
|
msg_set_hdr_sz(msg, LONG_H_SIZE);
|
|
msg_set_size(msg, LONG_H_SIZE + dsz);
|
|
destport = tipc_nametbl_translate(name->type, name->instance, &destnode);
|
|
msg_set_destnode(msg, destnode);
|
|
msg_set_destport(msg, destport);
|
|
msg_dbg(msg, "forw2name ==> ");
|
|
if (skb_cow(buf, LONG_H_SIZE))
|
|
return -ENOMEM;
|
|
skb_push(buf, LONG_H_SIZE);
|
|
memcpy(buf->data, (unchar *)msg, LONG_H_SIZE);
|
|
msg_dbg(buf_msg(buf),"PREP:");
|
|
if (likely(destport || destnode)) {
|
|
p_ptr->sent++;
|
|
if (destnode == tipc_own_addr)
|
|
return tipc_port_recv_msg(buf);
|
|
res = tipc_send_buf_fast(buf, destnode);
|
|
if (likely(res != -ELINKCONG))
|
|
return res;
|
|
if (port_unreliable(p_ptr))
|
|
return dsz;
|
|
return -ELINKCONG;
|
|
}
|
|
return tipc_reject_msg(buf, TIPC_ERR_NO_NAME);
|
|
}
|
|
|
|
/**
|
|
* tipc_send_buf2name - send message buffer to port name
|
|
*/
|
|
|
|
int tipc_send_buf2name(u32 ref,
|
|
struct tipc_name const *dest,
|
|
u32 domain,
|
|
struct sk_buff *buf,
|
|
unsigned int dsz)
|
|
{
|
|
struct tipc_portid orig;
|
|
|
|
orig.ref = ref;
|
|
orig.node = tipc_own_addr;
|
|
return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig,
|
|
TIPC_PORT_IMPORTANCE);
|
|
}
|
|
|
|
/**
|
|
* tipc_forward2port - forward message sections to port identity
|
|
*/
|
|
|
|
int tipc_forward2port(u32 ref,
|
|
struct tipc_portid const *dest,
|
|
unsigned int num_sect,
|
|
struct iovec const *msg_sect,
|
|
struct tipc_portid const *orig,
|
|
unsigned int importance)
|
|
{
|
|
struct port *p_ptr;
|
|
struct tipc_msg *msg;
|
|
int res;
|
|
|
|
p_ptr = tipc_port_deref(ref);
|
|
if (!p_ptr || p_ptr->publ.connected)
|
|
return -EINVAL;
|
|
|
|
msg = &p_ptr->publ.phdr;
|
|
msg_set_type(msg, TIPC_DIRECT_MSG);
|
|
msg_set_orignode(msg, orig->node);
|
|
msg_set_origport(msg, orig->ref);
|
|
msg_set_destnode(msg, dest->node);
|
|
msg_set_destport(msg, dest->ref);
|
|
msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
|
|
if (importance <= TIPC_CRITICAL_IMPORTANCE)
|
|
msg_set_importance(msg, importance);
|
|
p_ptr->sent++;
|
|
if (dest->node == tipc_own_addr)
|
|
return tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
|
|
res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node);
|
|
if (likely(res != -ELINKCONG))
|
|
return res;
|
|
if (port_unreliable(p_ptr)) {
|
|
/* Just calculate msg length and return */
|
|
return msg_calc_data_size(msg_sect, num_sect);
|
|
}
|
|
return -ELINKCONG;
|
|
}
|
|
|
|
/**
|
|
* tipc_send2port - send message sections to port identity
|
|
*/
|
|
|
|
int tipc_send2port(u32 ref,
|
|
struct tipc_portid const *dest,
|
|
unsigned int num_sect,
|
|
struct iovec const *msg_sect)
|
|
{
|
|
struct tipc_portid orig;
|
|
|
|
orig.ref = ref;
|
|
orig.node = tipc_own_addr;
|
|
return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig,
|
|
TIPC_PORT_IMPORTANCE);
|
|
}
|
|
|
|
/**
|
|
* tipc_forward_buf2port - forward message buffer to port identity
|
|
*/
|
|
int tipc_forward_buf2port(u32 ref,
|
|
struct tipc_portid const *dest,
|
|
struct sk_buff *buf,
|
|
unsigned int dsz,
|
|
struct tipc_portid const *orig,
|
|
unsigned int importance)
|
|
{
|
|
struct port *p_ptr;
|
|
struct tipc_msg *msg;
|
|
int res;
|
|
|
|
p_ptr = (struct port *)tipc_ref_deref(ref);
|
|
if (!p_ptr || p_ptr->publ.connected)
|
|
return -EINVAL;
|
|
|
|
msg = &p_ptr->publ.phdr;
|
|
msg_set_type(msg, TIPC_DIRECT_MSG);
|
|
msg_set_orignode(msg, orig->node);
|
|
msg_set_origport(msg, orig->ref);
|
|
msg_set_destnode(msg, dest->node);
|
|
msg_set_destport(msg, dest->ref);
|
|
msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
|
|
if (importance <= TIPC_CRITICAL_IMPORTANCE)
|
|
msg_set_importance(msg, importance);
|
|
msg_set_size(msg, DIR_MSG_H_SIZE + dsz);
|
|
if (skb_cow(buf, DIR_MSG_H_SIZE))
|
|
return -ENOMEM;
|
|
|
|
skb_push(buf, DIR_MSG_H_SIZE);
|
|
memcpy(buf->data, (unchar *)msg, DIR_MSG_H_SIZE);
|
|
msg_dbg(msg, "buf2port: ");
|
|
p_ptr->sent++;
|
|
if (dest->node == tipc_own_addr)
|
|
return tipc_port_recv_msg(buf);
|
|
res = tipc_send_buf_fast(buf, dest->node);
|
|
if (likely(res != -ELINKCONG))
|
|
return res;
|
|
if (port_unreliable(p_ptr))
|
|
return dsz;
|
|
return -ELINKCONG;
|
|
}
|
|
|
|
/**
|
|
* tipc_send_buf2port - send message buffer to port identity
|
|
*/
|
|
|
|
int tipc_send_buf2port(u32 ref,
|
|
struct tipc_portid const *dest,
|
|
struct sk_buff *buf,
|
|
unsigned int dsz)
|
|
{
|
|
struct tipc_portid orig;
|
|
|
|
orig.ref = ref;
|
|
orig.node = tipc_own_addr;
|
|
return tipc_forward_buf2port(ref, dest, buf, dsz, &orig,
|
|
TIPC_PORT_IMPORTANCE);
|
|
}
|
|
|
|
|