cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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link.h (7057B)


      1/*
      2 * net/tipc/link.h: Include file for TIPC link code
      3 *
      4 * Copyright (c) 1995-2006, 2013-2014, Ericsson AB
      5 * Copyright (c) 2004-2005, 2010-2011, Wind River Systems
      6 * All rights reserved.
      7 *
      8 * Redistribution and use in source and binary forms, with or without
      9 * modification, are permitted provided that the following conditions are met:
     10 *
     11 * 1. Redistributions of source code must retain the above copyright
     12 *    notice, this list of conditions and the following disclaimer.
     13 * 2. Redistributions in binary form must reproduce the above copyright
     14 *    notice, this list of conditions and the following disclaimer in the
     15 *    documentation and/or other materials provided with the distribution.
     16 * 3. Neither the names of the copyright holders nor the names of its
     17 *    contributors may be used to endorse or promote products derived from
     18 *    this software without specific prior written permission.
     19 *
     20 * Alternatively, this software may be distributed under the terms of the
     21 * GNU General Public License ("GPL") version 2 as published by the Free
     22 * Software Foundation.
     23 *
     24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     34 * POSSIBILITY OF SUCH DAMAGE.
     35 */
     36
     37#ifndef _TIPC_LINK_H
     38#define _TIPC_LINK_H
     39
     40#include <net/genetlink.h>
     41#include "msg.h"
     42#include "node.h"
     43
     44/* TIPC-specific error codes
     45*/
     46#define ELINKCONG EAGAIN	/* link congestion <=> resource unavailable */
     47
     48/* Link FSM events:
     49 */
     50enum {
     51	LINK_ESTABLISH_EVT       = 0xec1ab1e,
     52	LINK_PEER_RESET_EVT      = 0x9eed0e,
     53	LINK_FAILURE_EVT         = 0xfa110e,
     54	LINK_RESET_EVT           = 0x10ca1d0e,
     55	LINK_FAILOVER_BEGIN_EVT  = 0xfa110bee,
     56	LINK_FAILOVER_END_EVT    = 0xfa110ede,
     57	LINK_SYNCH_BEGIN_EVT     = 0xc1ccbee,
     58	LINK_SYNCH_END_EVT       = 0xc1ccede
     59};
     60
     61/* Events returned from link at packet reception or at timeout
     62 */
     63enum {
     64	TIPC_LINK_UP_EVT       = 1,
     65	TIPC_LINK_DOWN_EVT     = (1 << 1),
     66	TIPC_LINK_SND_STATE    = (1 << 2)
     67};
     68
     69/* Starting value for maximum packet size negotiation on unicast links
     70 * (unless bearer MTU is less)
     71 */
     72#define MAX_PKT_DEFAULT 1500
     73
     74bool tipc_link_create(struct net *net, char *if_name, int bearer_id,
     75		      int tolerance, char net_plane, u32 mtu, int priority,
     76		      u32 min_win, u32 max_win, u32 session, u32 ownnode,
     77		      u32 peer, u8 *peer_id, u16 peer_caps,
     78		      struct tipc_link *bc_sndlink,
     79		      struct tipc_link *bc_rcvlink,
     80		      struct sk_buff_head *inputq,
     81		      struct sk_buff_head *namedq,
     82		      struct tipc_link **link);
     83bool tipc_link_bc_create(struct net *net, u32 ownnode, u32 peer, u8 *peer_id,
     84			 int mtu, u32 min_win, u32 max_win, u16 peer_caps,
     85			 struct sk_buff_head *inputq,
     86			 struct sk_buff_head *namedq,
     87			 struct tipc_link *bc_sndlink,
     88			 struct tipc_link **link);
     89void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl,
     90			   int mtyp, struct sk_buff_head *xmitq);
     91void tipc_link_create_dummy_tnl_msg(struct tipc_link *tnl,
     92				    struct sk_buff_head *xmitq);
     93void tipc_link_failover_prepare(struct tipc_link *l, struct tipc_link *tnl,
     94				struct sk_buff_head *xmitq);
     95void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
     96int tipc_link_fsm_evt(struct tipc_link *l, int evt);
     97bool tipc_link_is_up(struct tipc_link *l);
     98bool tipc_link_peer_is_down(struct tipc_link *l);
     99bool tipc_link_is_reset(struct tipc_link *l);
    100bool tipc_link_is_establishing(struct tipc_link *l);
    101bool tipc_link_is_synching(struct tipc_link *l);
    102bool tipc_link_is_failingover(struct tipc_link *l);
    103bool tipc_link_is_blocked(struct tipc_link *l);
    104void tipc_link_set_active(struct tipc_link *l, bool active);
    105void tipc_link_reset(struct tipc_link *l);
    106void tipc_link_reset_stats(struct tipc_link *l);
    107int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list,
    108		   struct sk_buff_head *xmitq);
    109struct sk_buff_head *tipc_link_inputq(struct tipc_link *l);
    110u16 tipc_link_rcv_nxt(struct tipc_link *l);
    111u16 tipc_link_acked(struct tipc_link *l);
    112u32 tipc_link_id(struct tipc_link *l);
    113char *tipc_link_name(struct tipc_link *l);
    114u32 tipc_link_state(struct tipc_link *l);
    115char tipc_link_plane(struct tipc_link *l);
    116int tipc_link_prio(struct tipc_link *l);
    117int tipc_link_min_win(struct tipc_link *l);
    118int tipc_link_max_win(struct tipc_link *l);
    119void tipc_link_update_caps(struct tipc_link *l, u16 capabilities);
    120bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr);
    121unsigned long tipc_link_tolerance(struct tipc_link *l);
    122void tipc_link_set_tolerance(struct tipc_link *l, u32 tol,
    123			     struct sk_buff_head *xmitq);
    124void tipc_link_set_prio(struct tipc_link *l, u32 prio,
    125			struct sk_buff_head *xmitq);
    126void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit);
    127void tipc_link_set_queue_limits(struct tipc_link *l, u32 min_win, u32 max_win);
    128int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
    129		       struct tipc_link *link, int nlflags);
    130int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
    131int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq);
    132int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb,
    133		  struct sk_buff_head *xmitq);
    134int tipc_link_build_state_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
    135void tipc_link_add_bc_peer(struct tipc_link *snd_l,
    136			   struct tipc_link *uc_l,
    137			   struct sk_buff_head *xmitq);
    138void tipc_link_remove_bc_peer(struct tipc_link *snd_l,
    139			      struct tipc_link *rcv_l,
    140			      struct sk_buff_head *xmitq);
    141int tipc_link_bc_peers(struct tipc_link *l);
    142void tipc_link_set_mtu(struct tipc_link *l, int mtu);
    143int tipc_link_mtu(struct tipc_link *l);
    144int tipc_link_mss(struct tipc_link *l);
    145u16 tipc_get_gap_ack_blks(struct tipc_gap_ack_blks **ga, struct tipc_link *l,
    146			  struct tipc_msg *hdr, bool uc);
    147int tipc_link_bc_ack_rcv(struct tipc_link *l, u16 acked, u16 gap,
    148			 struct tipc_gap_ack_blks *ga,
    149			 struct sk_buff_head *xmitq,
    150			 struct sk_buff_head *retrq);
    151void tipc_link_build_bc_sync_msg(struct tipc_link *l,
    152				 struct sk_buff_head *xmitq);
    153void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr);
    154int tipc_link_bc_sync_rcv(struct tipc_link *l,   struct tipc_msg *hdr,
    155			  struct sk_buff_head *xmitq);
    156int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb,
    157			  struct sk_buff_head *xmitq);
    158bool tipc_link_too_silent(struct tipc_link *l);
    159struct net *tipc_link_net(struct tipc_link *l);
    160#endif