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160 lines
6.9 KiB
160 lines
6.9 KiB
/* |
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* net/tipc/link.h: Include file for TIPC link code |
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* |
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* Copyright (c) 1995-2006, 2013-2014, Ericsson AB |
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* Copyright (c) 2004-2005, 2010-2011, 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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#ifndef _TIPC_LINK_H |
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#define _TIPC_LINK_H |
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#include <net/genetlink.h> |
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#include "msg.h" |
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#include "node.h" |
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/* TIPC-specific error codes |
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*/ |
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#define ELINKCONG EAGAIN /* link congestion <=> resource unavailable */ |
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/* Link FSM events: |
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*/ |
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enum { |
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LINK_ESTABLISH_EVT = 0xec1ab1e, |
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LINK_PEER_RESET_EVT = 0x9eed0e, |
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LINK_FAILURE_EVT = 0xfa110e, |
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LINK_RESET_EVT = 0x10ca1d0e, |
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LINK_FAILOVER_BEGIN_EVT = 0xfa110bee, |
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LINK_FAILOVER_END_EVT = 0xfa110ede, |
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LINK_SYNCH_BEGIN_EVT = 0xc1ccbee, |
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LINK_SYNCH_END_EVT = 0xc1ccede |
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}; |
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/* Events returned from link at packet reception or at timeout |
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*/ |
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enum { |
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TIPC_LINK_UP_EVT = 1, |
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TIPC_LINK_DOWN_EVT = (1 << 1), |
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TIPC_LINK_SND_STATE = (1 << 2) |
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}; |
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/* Starting value for maximum packet size negotiation on unicast links |
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* (unless bearer MTU is less) |
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*/ |
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#define MAX_PKT_DEFAULT 1500 |
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bool tipc_link_create(struct net *net, char *if_name, int bearer_id, |
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int tolerance, char net_plane, u32 mtu, int priority, |
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u32 min_win, u32 max_win, u32 session, u32 ownnode, |
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u32 peer, u8 *peer_id, u16 peer_caps, |
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struct tipc_link *bc_sndlink, |
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struct tipc_link *bc_rcvlink, |
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struct sk_buff_head *inputq, |
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struct sk_buff_head *namedq, |
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struct tipc_link **link); |
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bool tipc_link_bc_create(struct net *net, u32 ownnode, u32 peer, u8 *peer_id, |
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int mtu, u32 min_win, u32 max_win, u16 peer_caps, |
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struct sk_buff_head *inputq, |
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struct sk_buff_head *namedq, |
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struct tipc_link *bc_sndlink, |
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struct tipc_link **link); |
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void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl, |
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int mtyp, struct sk_buff_head *xmitq); |
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void tipc_link_create_dummy_tnl_msg(struct tipc_link *tnl, |
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struct sk_buff_head *xmitq); |
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void tipc_link_failover_prepare(struct tipc_link *l, struct tipc_link *tnl, |
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struct sk_buff_head *xmitq); |
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void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq); |
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int tipc_link_fsm_evt(struct tipc_link *l, int evt); |
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bool tipc_link_is_up(struct tipc_link *l); |
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bool tipc_link_peer_is_down(struct tipc_link *l); |
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bool tipc_link_is_reset(struct tipc_link *l); |
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bool tipc_link_is_establishing(struct tipc_link *l); |
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bool tipc_link_is_synching(struct tipc_link *l); |
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bool tipc_link_is_failingover(struct tipc_link *l); |
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bool tipc_link_is_blocked(struct tipc_link *l); |
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void tipc_link_set_active(struct tipc_link *l, bool active); |
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void tipc_link_reset(struct tipc_link *l); |
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void tipc_link_reset_stats(struct tipc_link *l); |
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int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list, |
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struct sk_buff_head *xmitq); |
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struct sk_buff_head *tipc_link_inputq(struct tipc_link *l); |
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u16 tipc_link_rcv_nxt(struct tipc_link *l); |
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u16 tipc_link_acked(struct tipc_link *l); |
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u32 tipc_link_id(struct tipc_link *l); |
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char *tipc_link_name(struct tipc_link *l); |
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u32 tipc_link_state(struct tipc_link *l); |
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char tipc_link_plane(struct tipc_link *l); |
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int tipc_link_prio(struct tipc_link *l); |
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int tipc_link_min_win(struct tipc_link *l); |
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int tipc_link_max_win(struct tipc_link *l); |
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void tipc_link_update_caps(struct tipc_link *l, u16 capabilities); |
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bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr); |
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unsigned long tipc_link_tolerance(struct tipc_link *l); |
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void tipc_link_set_tolerance(struct tipc_link *l, u32 tol, |
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struct sk_buff_head *xmitq); |
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void tipc_link_set_prio(struct tipc_link *l, u32 prio, |
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struct sk_buff_head *xmitq); |
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void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit); |
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void tipc_link_set_queue_limits(struct tipc_link *l, u32 min_win, u32 max_win); |
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int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg, |
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struct tipc_link *link, int nlflags); |
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int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]); |
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int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq); |
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int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb, |
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struct sk_buff_head *xmitq); |
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int tipc_link_build_state_msg(struct tipc_link *l, struct sk_buff_head *xmitq); |
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void tipc_link_add_bc_peer(struct tipc_link *snd_l, |
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struct tipc_link *uc_l, |
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struct sk_buff_head *xmitq); |
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void tipc_link_remove_bc_peer(struct tipc_link *snd_l, |
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struct tipc_link *rcv_l, |
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struct sk_buff_head *xmitq); |
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int tipc_link_bc_peers(struct tipc_link *l); |
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void tipc_link_set_mtu(struct tipc_link *l, int mtu); |
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int tipc_link_mtu(struct tipc_link *l); |
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int tipc_link_mss(struct tipc_link *l); |
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u16 tipc_get_gap_ack_blks(struct tipc_gap_ack_blks **ga, struct tipc_link *l, |
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struct tipc_msg *hdr, bool uc); |
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int tipc_link_bc_ack_rcv(struct tipc_link *l, u16 acked, u16 gap, |
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struct tipc_gap_ack_blks *ga, |
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struct sk_buff_head *xmitq, |
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struct sk_buff_head *retrq); |
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void tipc_link_build_bc_sync_msg(struct tipc_link *l, |
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struct sk_buff_head *xmitq); |
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void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr); |
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int tipc_link_bc_sync_rcv(struct tipc_link *l, struct tipc_msg *hdr, |
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struct sk_buff_head *xmitq); |
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int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb, |
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struct sk_buff_head *xmitq); |
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bool tipc_link_too_silent(struct tipc_link *l); |
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struct net *tipc_link_net(struct tipc_link *l); |
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#endif
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