Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * net/tipc/link.h: Include file for TIPC link code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (c) 1995-2006, 2013-2014, Ericsson AB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2004-2005, 2010-2011, Wind River Systems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * modification, are permitted provided that the following conditions are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * 1. Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *    notice, this list of conditions and the following disclaimer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * 2. Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  *    notice, this list of conditions and the following disclaimer in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  *    documentation and/or other materials provided with the distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * 3. Neither the names of the copyright holders nor the names of its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  *    contributors may be used to endorse or promote products derived from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  *    this software without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * Alternatively, this software may be distributed under the terms of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  * GNU General Public License ("GPL") version 2 as published by the Free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  * Software Foundation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24)  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25)  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29)  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30)  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31)  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32)  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33)  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  * POSSIBILITY OF SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #ifndef _TIPC_LINK_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define _TIPC_LINK_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #include <net/genetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #include "msg.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #include "node.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) /* TIPC-specific error codes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define ELINKCONG EAGAIN	/* link congestion <=> resource unavailable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) /* Link FSM events:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	LINK_ESTABLISH_EVT       = 0xec1ab1e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	LINK_PEER_RESET_EVT      = 0x9eed0e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	LINK_FAILURE_EVT         = 0xfa110e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	LINK_RESET_EVT           = 0x10ca1d0e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	LINK_FAILOVER_BEGIN_EVT  = 0xfa110bee,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	LINK_FAILOVER_END_EVT    = 0xfa110ede,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	LINK_SYNCH_BEGIN_EVT     = 0xc1ccbee,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	LINK_SYNCH_END_EVT       = 0xc1ccede
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) /* Events returned from link at packet reception or at timeout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	TIPC_LINK_UP_EVT       = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	TIPC_LINK_DOWN_EVT     = (1 << 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	TIPC_LINK_SND_STATE    = (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) /* Starting value for maximum packet size negotiation on unicast links
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70)  * (unless bearer MTU is less)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) #define MAX_PKT_DEFAULT 1500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) bool tipc_link_create(struct net *net, char *if_name, int bearer_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		      int tolerance, char net_plane, u32 mtu, int priority,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		      u32 min_win, u32 max_win, u32 session, u32 ownnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		      u32 peer, u8 *peer_id, u16 peer_caps,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		      struct tipc_link *bc_sndlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		      struct tipc_link *bc_rcvlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		      struct sk_buff_head *inputq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		      struct sk_buff_head *namedq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		      struct tipc_link **link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) bool tipc_link_bc_create(struct net *net, u32 ownnode, u32 peer, u8 *peer_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 			 int mtu, u32 min_win, u32 max_win, u16 peer_caps,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			 struct sk_buff_head *inputq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			 struct sk_buff_head *namedq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			 struct tipc_link *bc_sndlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			 struct tipc_link **link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			   int mtyp, struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) void tipc_link_create_dummy_tnl_msg(struct tipc_link *tnl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 				    struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) void tipc_link_failover_prepare(struct tipc_link *l, struct tipc_link *tnl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 				struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) int tipc_link_fsm_evt(struct tipc_link *l, int evt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) bool tipc_link_is_up(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) bool tipc_link_peer_is_down(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) bool tipc_link_is_reset(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) bool tipc_link_is_establishing(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) bool tipc_link_is_synching(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) bool tipc_link_is_failingover(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) bool tipc_link_is_blocked(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) void tipc_link_set_active(struct tipc_link *l, bool active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) void tipc_link_reset(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) void tipc_link_reset_stats(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		   struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct sk_buff_head *tipc_link_inputq(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) u16 tipc_link_rcv_nxt(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) u16 tipc_link_acked(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) u32 tipc_link_id(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) char *tipc_link_name(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) u32 tipc_link_state(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) char tipc_link_plane(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int tipc_link_prio(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int tipc_link_min_win(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int tipc_link_max_win(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) void tipc_link_update_caps(struct tipc_link *l, u16 capabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) unsigned long tipc_link_tolerance(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) void tipc_link_set_tolerance(struct tipc_link *l, u32 tol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 			     struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) void tipc_link_set_prio(struct tipc_link *l, u32 prio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) void tipc_link_set_queue_limits(struct tipc_link *l, u32 min_win, u32 max_win);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		       struct tipc_link *link, int nlflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		  struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int tipc_link_build_state_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) void tipc_link_add_bc_peer(struct tipc_link *snd_l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			   struct tipc_link *uc_l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 			   struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) void tipc_link_remove_bc_peer(struct tipc_link *snd_l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			      struct tipc_link *rcv_l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			      struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int tipc_link_bc_peers(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) void tipc_link_set_mtu(struct tipc_link *l, int mtu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) int tipc_link_mtu(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) int tipc_link_mss(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) u16 tipc_get_gap_ack_blks(struct tipc_gap_ack_blks **ga, struct tipc_link *l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 			  struct tipc_msg *hdr, bool uc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) int tipc_link_bc_ack_rcv(struct tipc_link *l, u16 acked, u16 gap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 			 struct tipc_gap_ack_blks *ga,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			 struct sk_buff_head *xmitq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			 struct sk_buff_head *retrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) void tipc_link_build_bc_sync_msg(struct tipc_link *l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 				 struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) int tipc_link_bc_sync_rcv(struct tipc_link *l,   struct tipc_msg *hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 			  struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			  struct sk_buff_head *xmitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) bool tipc_link_too_silent(struct tipc_link *l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #endif