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net/tipc/msg.h
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/* * net/tipc/msg.h: Include file for TIPC message header routines |
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* |
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* Copyright (c) 2000-2007, 2014-2017 Ericsson AB |
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* Copyright (c) 2005-2008, 2010-2011, Wind River Systems |
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* All rights reserved. * |
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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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* 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. |
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* |
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* Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. */ #ifndef _TIPC_MSG_H #define _TIPC_MSG_H |
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#include <linux/tipc.h> |
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#include "core.h" |
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/* * Constants and routines used to read and write TIPC payload message headers * * Note: Some items are also used with TIPC internal message headers */ |
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#define TIPC_VERSION 2 |
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struct plist; |
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/* |
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* Payload message users are defined in TIPC's public API: * - TIPC_LOW_IMPORTANCE * - TIPC_MEDIUM_IMPORTANCE * - TIPC_HIGH_IMPORTANCE * - TIPC_CRITICAL_IMPORTANCE */ |
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#define TIPC_SYSTEM_IMPORTANCE 4 |
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/* * Payload message types |
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*/ |
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#define TIPC_CONN_MSG 0 #define TIPC_MCAST_MSG 1 #define TIPC_NAMED_MSG 2 #define TIPC_DIRECT_MSG 3 |
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#define TIPC_GRP_MEMBER_EVT 4 #define TIPC_GRP_BCAST_MSG 5 |
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#define TIPC_GRP_MCAST_MSG 6 #define TIPC_GRP_UCAST_MSG 7 |
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/* |
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* Internal message users */ #define BCAST_PROTOCOL 5 #define MSG_BUNDLER 6 #define LINK_PROTOCOL 7 #define CONN_MANAGER 8 |
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#define GROUP_PROTOCOL 9 |
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#define TUNNEL_PROTOCOL 10 |
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#define NAME_DISTRIBUTOR 11 #define MSG_FRAGMENTER 12 #define LINK_CONFIG 13 #define SOCK_WAKEUP 14 /* pseudo user */ |
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#define TOP_SRV 15 /* pseudo user */ |
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/* |
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* Message header sizes */ |
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#define SHORT_H_SIZE 24 /* In-cluster basic payload message */ #define BASIC_H_SIZE 32 /* Basic payload message */ #define NAMED_H_SIZE 40 /* Named payload message */ #define MCAST_H_SIZE 44 /* Multicast payload message */ |
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#define GROUP_H_SIZE 44 /* Group payload message */ |
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#define INT_H_SIZE 40 /* Internal messages */ #define MIN_H_SIZE 24 /* Smallest legal TIPC header size */ #define MAX_H_SIZE 60 /* Largest possible TIPC header size */ |
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#define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE) |
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#define FB_MTU 3744 |
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#define TIPC_MEDIA_INFO_OFFSET 5 |
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struct tipc_skb_cb { |
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struct sk_buff *tail; |
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unsigned long nxt_retr; |
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unsigned long retr_stamp; u32 bytes_read; u32 orig_member; |
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u16 chain_imp; |
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u16 ackers; |
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u16 retr_cnt; bool validated; |
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}; #define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0])) |
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struct tipc_msg { __be32 hdr[15]; }; |
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/* struct tipc_gap_ack - TIPC Gap ACK block * @ack: seqno of the last consecutive packet in link deferdq * @gap: number of gap packets since the last ack * * E.g: * link deferdq: 1 2 3 4 10 11 13 14 15 20 * --> Gap ACK blocks: <4, 5>, <11, 1>, <15, 4>, <20, 0> */ struct tipc_gap_ack { __be16 ack; __be16 gap; }; /* struct tipc_gap_ack_blks * @len: actual length of the record * @gack_cnt: number of Gap ACK blocks in the record * @gacks: array of Gap ACK blocks */ struct tipc_gap_ack_blks { __be16 len; u8 gack_cnt; u8 reserved; struct tipc_gap_ack gacks[]; }; #define tipc_gap_ack_blks_sz(n) (sizeof(struct tipc_gap_ack_blks) + \ sizeof(struct tipc_gap_ack) * (n)) #define MAX_GAP_ACK_BLKS 32 #define MAX_GAP_ACK_BLKS_SZ tipc_gap_ack_blks_sz(MAX_GAP_ACK_BLKS) |
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static inline struct tipc_msg *buf_msg(struct sk_buff *skb) { return (struct tipc_msg *)skb->data; } |
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static inline u32 msg_word(struct tipc_msg *m, u32 pos) { return ntohl(m->hdr[pos]); } |
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static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) { m->hdr[w] = htonl(val); } |
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static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask) { return (msg_word(m, w) >> pos) & mask; } |
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static inline void msg_set_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask, u32 val) { |
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val = (val & mask) << pos; |
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mask = mask << pos; m->hdr[w] &= ~htonl(mask); m->hdr[w] |= htonl(val); |
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} |
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static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b) { u32 temp = msg->hdr[a]; msg->hdr[a] = msg->hdr[b]; msg->hdr[b] = temp; } |
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/* |
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* Word 0 */ |
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static inline u32 msg_version(struct tipc_msg *m) { return msg_bits(m, 0, 29, 7); } |
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static inline void msg_set_version(struct tipc_msg *m) |
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{ |
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msg_set_bits(m, 0, 29, 7, TIPC_VERSION); |
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} static inline u32 msg_user(struct tipc_msg *m) { return msg_bits(m, 0, 25, 0xf); } static inline u32 msg_isdata(struct tipc_msg *m) { |
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return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; |
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} |
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static inline void msg_set_user(struct tipc_msg *m, u32 n) |
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{ msg_set_bits(m, 0, 25, 0xf, n); } |
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static inline u32 msg_hdr_sz(struct tipc_msg *m) { return msg_bits(m, 0, 21, 0xf) << 2; } |
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static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n) |
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{ msg_set_bits(m, 0, 21, 0xf, n>>2); } |
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static inline u32 msg_size(struct tipc_msg *m) { return msg_bits(m, 0, 0, 0x1ffff); } |
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static inline u32 msg_blocks(struct tipc_msg *m) { return (msg_size(m) / 1024) + 1; } |
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static inline u32 msg_data_sz(struct tipc_msg *m) { return msg_size(m) - msg_hdr_sz(m); } |
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static inline int msg_non_seq(struct tipc_msg *m) |
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{ return msg_bits(m, 0, 20, 1); } |
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static inline void msg_set_non_seq(struct tipc_msg *m, u32 n) |
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{ |
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msg_set_bits(m, 0, 20, 1, n); |
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} |
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static inline int msg_is_syn(struct tipc_msg *m) { return msg_bits(m, 0, 17, 1); } static inline void msg_set_syn(struct tipc_msg *m, u32 d) { msg_set_bits(m, 0, 17, 1, d); } |
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static inline int msg_dest_droppable(struct tipc_msg *m) |
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{ return msg_bits(m, 0, 19, 1); } |
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static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d) |
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{ msg_set_bits(m, 0, 19, 1, d); } |
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static inline int msg_is_keepalive(struct tipc_msg *m) { return msg_bits(m, 0, 19, 1); } static inline void msg_set_is_keepalive(struct tipc_msg *m, u32 d) { msg_set_bits(m, 0, 19, 1, d); } |
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static inline int msg_src_droppable(struct tipc_msg *m) |
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{ return msg_bits(m, 0, 18, 1); } |
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static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d) |
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{ msg_set_bits(m, 0, 18, 1, d); } |
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static inline bool msg_is_rcast(struct tipc_msg *m) { return msg_bits(m, 0, 18, 0x1); } static inline void msg_set_is_rcast(struct tipc_msg *m, bool d) { msg_set_bits(m, 0, 18, 0x1, d); } |
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static inline void msg_set_size(struct tipc_msg *m, u32 sz) { m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz); } |
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static inline unchar *msg_data(struct tipc_msg *m) { return ((unchar *)m) + msg_hdr_sz(m); } |
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static inline struct tipc_msg *msg_inner_hdr(struct tipc_msg *m) |
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{ return (struct tipc_msg *)msg_data(m); } |
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/* |
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* Word 1 */ |
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static inline u32 msg_type(struct tipc_msg *m) { return msg_bits(m, 1, 29, 0x7); } |
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static inline void msg_set_type(struct tipc_msg *m, u32 n) |
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{ msg_set_bits(m, 1, 29, 0x7, n); } |
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static inline int msg_in_group(struct tipc_msg *m) { |
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int mtyp = msg_type(m); |
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return mtyp >= TIPC_GRP_MEMBER_EVT && mtyp <= TIPC_GRP_UCAST_MSG; |
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} static inline bool msg_is_grp_evt(struct tipc_msg *m) { return msg_type(m) == TIPC_GRP_MEMBER_EVT; |
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} |
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static inline u32 msg_named(struct tipc_msg *m) { return msg_type(m) == TIPC_NAMED_MSG; } static inline u32 msg_mcast(struct tipc_msg *m) { |
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int mtyp = msg_type(m); |
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return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) || (mtyp == TIPC_GRP_MCAST_MSG)); |
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} static inline u32 msg_connected(struct tipc_msg *m) { return msg_type(m) == TIPC_CONN_MSG; } static inline u32 msg_errcode(struct tipc_msg *m) { return msg_bits(m, 1, 25, 0xf); } |
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static inline void msg_set_errcode(struct tipc_msg *m, u32 err) |
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{ msg_set_bits(m, 1, 25, 0xf, err); } |
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static inline u32 msg_reroute_cnt(struct tipc_msg *m) |
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{ return msg_bits(m, 1, 21, 0xf); } |
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static inline void msg_incr_reroute_cnt(struct tipc_msg *m) |
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{ msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1); } |
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static inline void msg_reset_reroute_cnt(struct tipc_msg *m) |
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{ msg_set_bits(m, 1, 21, 0xf, 0); } static inline u32 msg_lookup_scope(struct tipc_msg *m) { return msg_bits(m, 1, 19, 0x3); } |
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static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n) |
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{ msg_set_bits(m, 1, 19, 0x3, n); } |
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static inline u16 msg_bcast_ack(struct tipc_msg *m) |
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{ return msg_bits(m, 1, 0, 0xffff); } |
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static inline void msg_set_bcast_ack(struct tipc_msg *m, u16 n) |
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{ msg_set_bits(m, 1, 0, 0xffff, n); } |
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/* Note: reusing bits in word 1 for ACTIVATE_MSG only, to re-synch * link peer session number */ static inline bool msg_dest_session_valid(struct tipc_msg *m) { return msg_bits(m, 1, 16, 0x1); } static inline void msg_set_dest_session_valid(struct tipc_msg *m, bool valid) { msg_set_bits(m, 1, 16, 0x1, valid); } static inline u16 msg_dest_session(struct tipc_msg *m) { return msg_bits(m, 1, 0, 0xffff); } static inline void msg_set_dest_session(struct tipc_msg *m, u16 n) { msg_set_bits(m, 1, 0, 0xffff, n); } |
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/* |
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* Word 2 */ |
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static inline u16 msg_ack(struct tipc_msg *m) |
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{ return msg_bits(m, 2, 16, 0xffff); } |
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static inline void msg_set_ack(struct tipc_msg *m, u16 n) |
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{ msg_set_bits(m, 2, 16, 0xffff, n); } |
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static inline u16 msg_seqno(struct tipc_msg *m) |
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{ return msg_bits(m, 2, 0, 0xffff); } |
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static inline void msg_set_seqno(struct tipc_msg *m, u16 n) |
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{ msg_set_bits(m, 2, 0, 0xffff, n); } |
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/* |
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* Words 3-10 */ |
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static inline u32 msg_importance(struct tipc_msg *m) { |
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int usr = msg_user(m); if (likely((usr <= TIPC_CRITICAL_IMPORTANCE) && !msg_errcode(m))) return usr; if ((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER)) |
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return msg_bits(m, 9, 0, 0x7); |
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return TIPC_SYSTEM_IMPORTANCE; } static inline void msg_set_importance(struct tipc_msg *m, u32 i) { |
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int usr = msg_user(m); if (likely((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER))) |
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msg_set_bits(m, 9, 0, 0x7, i); |
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else if (i < TIPC_SYSTEM_IMPORTANCE) |
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msg_set_user(m, i); else pr_warn("Trying to set illegal importance in message "); } |
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static inline u32 msg_prevnode(struct tipc_msg *m) { return msg_word(m, 3); } |
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static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) |
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{ msg_set_word(m, 3, a); } |
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static inline u32 msg_origport(struct tipc_msg *m) { |
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if (msg_user(m) == MSG_FRAGMENTER) |
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m = msg_inner_hdr(m); |
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return msg_word(m, 4); } |
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static inline void msg_set_origport(struct tipc_msg *m, u32 p) |
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{ msg_set_word(m, 4, p); } |
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static inline u32 msg_destport(struct tipc_msg *m) { return msg_word(m, 5); } |
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static inline void msg_set_destport(struct tipc_msg *m, u32 p) |
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{ msg_set_word(m, 5, p); } |
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static inline u32 msg_mc_netid(struct tipc_msg *m) { return msg_word(m, 5); } |
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static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) |
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{ msg_set_word(m, 5, p); } |
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static inline int msg_short(struct tipc_msg *m) { |
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return msg_hdr_sz(m) == SHORT_H_SIZE; |
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} static inline u32 msg_orignode(struct tipc_msg *m) { if (likely(msg_short(m))) return msg_prevnode(m); return msg_word(m, 6); } |
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static inline void msg_set_orignode(struct tipc_msg *m, u32 a) |
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{ msg_set_word(m, 6, a); } |
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static inline u32 msg_destnode(struct tipc_msg *m) { return msg_word(m, 7); } |
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static inline void msg_set_destnode(struct tipc_msg *m, u32 a) |
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{ msg_set_word(m, 7, a); } |
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static inline u32 msg_nametype(struct tipc_msg *m) { return msg_word(m, 8); } |
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static inline void msg_set_nametype(struct tipc_msg *m, u32 n) |
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{ msg_set_word(m, 8, n); } |
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static inline u32 msg_nameinst(struct tipc_msg *m) { return msg_word(m, 9); } static inline u32 msg_namelower(struct tipc_msg *m) { return msg_nameinst(m); } |
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static inline void msg_set_namelower(struct tipc_msg *m, u32 n) |
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{ msg_set_word(m, 9, n); } |
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static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) |
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{ msg_set_namelower(m, n); } |
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static inline u32 msg_nameupper(struct tipc_msg *m) { return msg_word(m, 10); } |
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static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) |
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519 520 521 |
{ msg_set_word(m, 10, n); } |
b97bf3fd8
|
522 |
/* |
cc4c4353f
|
523 524 |
* Constants and routines used to read and write TIPC internal message headers */ |
b97bf3fd8
|
525 |
|
c43072852
|
526 |
/* |
cc4c4353f
|
527 |
* Connection management protocol message types |
b97bf3fd8
|
528 |
*/ |
b97bf3fd8
|
529 530 531 |
#define CONN_PROBE 0 #define CONN_PROBE_REPLY 1 #define CONN_ACK 2 |
c43072852
|
532 |
/* |
cc4c4353f
|
533 |
* Name distributor message types |
b97bf3fd8
|
534 |
*/ |
b97bf3fd8
|
535 536 |
#define PUBLICATION 0 #define WITHDRAWAL 1 |
92138d1f2
|
537 538 539 |
/* * Segmentation message types */ |
92138d1f2
|
540 541 542 543 544 545 546 |
#define FIRST_FRAGMENT 0 #define FRAGMENT 1 #define LAST_FRAGMENT 2 /* * Link management protocol message types */ |
92138d1f2
|
547 548 549 550 551 552 553 |
#define STATE_MSG 0 #define RESET_MSG 1 #define ACTIVATE_MSG 2 /* * Changeover tunnel message types */ |
dff29b1a8
|
554 555 |
#define SYNCH_MSG 0 #define FAILOVER_MSG 1 |
92138d1f2
|
556 557 558 559 |
/* * Config protocol message types */ |
92138d1f2
|
560 561 |
#define DSC_REQ_MSG 0 #define DSC_RESP_MSG 1 |
25b0b9c4e
|
562 563 |
#define DSC_TRIAL_MSG 2 #define DSC_TRIAL_FAIL_MSG 3 |
92138d1f2
|
564 |
|
c43072852
|
565 |
/* |
75da2163d
|
566 567 568 569 |
* Group protocol message types */ #define GRP_JOIN_MSG 0 #define GRP_LEAVE_MSG 1 |
b7d426355
|
570 |
#define GRP_ADV_MSG 2 |
2f487712b
|
571 |
#define GRP_ACK_MSG 3 |
04d7b574b
|
572 573 |
#define GRP_RECLAIM_MSG 4 #define GRP_REMIT_MSG 5 |
75da2163d
|
574 575 |
/* |
b97bf3fd8
|
576 577 |
* Word 1 */ |
b97bf3fd8
|
578 579 |
static inline u32 msg_seq_gap(struct tipc_msg *m) { |
bd7845337
|
580 |
return msg_bits(m, 1, 16, 0x1fff); |
b97bf3fd8
|
581 582 583 584 |
} static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) { |
bd7845337
|
585 |
msg_set_bits(m, 1, 16, 0x1fff, n); |
b97bf3fd8
|
586 |
} |
fc0eea691
|
587 588 589 590 591 592 593 594 595 |
static inline u32 msg_node_sig(struct tipc_msg *m) { return msg_bits(m, 1, 0, 0xffff); } static inline void msg_set_node_sig(struct tipc_msg *m, u32 n) { msg_set_bits(m, 1, 0, 0xffff, n); } |
7764d6e83
|
596 597 598 599 600 601 602 603 604 |
static inline u32 msg_node_capabilities(struct tipc_msg *m) { return msg_bits(m, 1, 15, 0x1fff); } static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n) { msg_set_bits(m, 1, 15, 0x1fff, n); } |
c43072852
|
605 |
/* |
b97bf3fd8
|
606 607 |
* Word 2 */ |
b97bf3fd8
|
608 609 610 611 |
static inline u32 msg_dest_domain(struct tipc_msg *m) { return msg_word(m, 2); } |
c43072852
|
612 |
static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) |
b97bf3fd8
|
613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 |
{ msg_set_word(m, 2, n); } static inline u32 msg_bcgap_after(struct tipc_msg *m) { return msg_bits(m, 2, 16, 0xffff); } static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n) { msg_set_bits(m, 2, 16, 0xffff, n); } static inline u32 msg_bcgap_to(struct tipc_msg *m) { return msg_bits(m, 2, 0, 0xffff); } |
c43072852
|
631 |
static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) |
b97bf3fd8
|
632 633 634 |
{ msg_set_bits(m, 2, 0, 0xffff, n); } |
c43072852
|
635 |
/* |
b97bf3fd8
|
636 637 |
* Word 4 */ |
b97bf3fd8
|
638 639 640 641 |
static inline u32 msg_last_bcast(struct tipc_msg *m) { return msg_bits(m, 4, 16, 0xffff); } |
526669866
|
642 643 644 645 |
static inline u32 msg_bc_snd_nxt(struct tipc_msg *m) { return msg_last_bcast(m) + 1; } |
b97bf3fd8
|
646 647 648 649 |
static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n) { msg_set_bits(m, 4, 16, 0xffff, n); } |
2320bcdae
|
650 651 652 653 654 655 656 657 658 659 660 661 662 663 |
static inline u32 msg_nof_fragms(struct tipc_msg *m) { return msg_bits(m, 4, 0, 0xffff); } static inline void msg_set_nof_fragms(struct tipc_msg *m, u32 n) { msg_set_bits(m, 4, 0, 0xffff, n); } static inline u32 msg_fragm_no(struct tipc_msg *m) { return msg_bits(m, 4, 16, 0xffff); } |
b97bf3fd8
|
664 665 666 667 |
static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) { msg_set_bits(m, 4, 16, 0xffff, n); } |
6e498158a
|
668 |
static inline u16 msg_next_sent(struct tipc_msg *m) |
b97bf3fd8
|
669 670 671 |
{ return msg_bits(m, 4, 0, 0xffff); } |
6e498158a
|
672 |
static inline void msg_set_next_sent(struct tipc_msg *m, u16 n) |
b97bf3fd8
|
673 674 675 |
{ msg_set_bits(m, 4, 0, 0xffff, n); } |
b97bf3fd8
|
676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 |
static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n) { msg_set_bits(m, 4, 0, 0xffff, n); } static inline u32 msg_bc_netid(struct tipc_msg *m) { return msg_word(m, 4); } static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id) { msg_set_word(m, 4, id); } static inline u32 msg_link_selector(struct tipc_msg *m) { |
a853e4c6d
|
693 694 |
if (msg_user(m) == MSG_FRAGMENTER) m = (void *)msg_data(m); |
b97bf3fd8
|
695 696 |
return msg_bits(m, 4, 0, 1); } |
c43072852
|
697 |
/* |
b97bf3fd8
|
698 699 |
* Word 5 */ |
d999297c3
|
700 |
static inline u16 msg_session(struct tipc_msg *m) |
b97bf3fd8
|
701 702 703 |
{ return msg_bits(m, 5, 16, 0xffff); } |
d999297c3
|
704 |
static inline void msg_set_session(struct tipc_msg *m, u16 n) |
b97bf3fd8
|
705 706 707 708 709 710 711 712 713 714 715 |
{ msg_set_bits(m, 5, 16, 0xffff, n); } static inline u32 msg_probe(struct tipc_msg *m) { return msg_bits(m, 5, 0, 1); } static inline void msg_set_probe(struct tipc_msg *m, u32 val) { |
7eb878ed8
|
716 |
msg_set_bits(m, 5, 0, 1, val); |
b97bf3fd8
|
717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 |
} static inline char msg_net_plane(struct tipc_msg *m) { return msg_bits(m, 5, 1, 7) + 'A'; } static inline void msg_set_net_plane(struct tipc_msg *m, char n) { msg_set_bits(m, 5, 1, 7, (n - 'A')); } static inline u32 msg_linkprio(struct tipc_msg *m) { return msg_bits(m, 5, 4, 0x1f); } static inline void msg_set_linkprio(struct tipc_msg *m, u32 n) { msg_set_bits(m, 5, 4, 0x1f, n); } static inline u32 msg_bearer_id(struct tipc_msg *m) { return msg_bits(m, 5, 9, 0x7); } static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n) { msg_set_bits(m, 5, 9, 0x7, n); } static inline u32 msg_redundant_link(struct tipc_msg *m) { return msg_bits(m, 5, 12, 0x1); } |
77f167fcc
|
753 |
static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r) |
b97bf3fd8
|
754 |
{ |
77f167fcc
|
755 |
msg_set_bits(m, 5, 12, 0x1, r); |
b97bf3fd8
|
756 |
} |
634696b19
|
757 758 759 760 761 762 763 764 765 |
static inline u32 msg_peer_stopping(struct tipc_msg *m) { return msg_bits(m, 5, 13, 0x1); } static inline void msg_set_peer_stopping(struct tipc_msg *m, u32 s) { msg_set_bits(m, 5, 13, 0x1, s); } |
06bd2b1ed
|
766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 |
static inline bool msg_bc_ack_invalid(struct tipc_msg *m) { switch (msg_user(m)) { case BCAST_PROTOCOL: case NAME_DISTRIBUTOR: case LINK_PROTOCOL: return msg_bits(m, 5, 14, 0x1); default: return false; } } static inline void msg_set_bc_ack_invalid(struct tipc_msg *m, bool invalid) { msg_set_bits(m, 5, 14, 0x1, invalid); } |
3d749a6a2
|
782 783 |
static inline char *msg_media_addr(struct tipc_msg *m) { |
91e2eb568
|
784 |
return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET]; |
3d749a6a2
|
785 |
} |
b97bf3fd8
|
786 |
|
02d11ca20
|
787 788 789 790 791 792 793 794 795 |
static inline u32 msg_bc_gap(struct tipc_msg *m) { return msg_bits(m, 8, 0, 0x3ff); } static inline void msg_set_bc_gap(struct tipc_msg *m, u32 n) { msg_set_bits(m, 8, 0, 0x3ff, n); } |
c43072852
|
796 |
/* |
b97bf3fd8
|
797 798 |
* Word 9 */ |
6e498158a
|
799 |
static inline u16 msg_msgcnt(struct tipc_msg *m) |
b97bf3fd8
|
800 801 802 |
{ return msg_bits(m, 9, 16, 0xffff); } |
6e498158a
|
803 |
static inline void msg_set_msgcnt(struct tipc_msg *m, u16 n) |
b97bf3fd8
|
804 805 806 |
{ msg_set_bits(m, 9, 16, 0xffff, n); } |
4929a932b
|
807 808 809 810 811 812 813 814 815 |
static inline u16 msg_syncpt(struct tipc_msg *m) { return msg_bits(m, 9, 16, 0xffff); } static inline void msg_set_syncpt(struct tipc_msg *m, u16 n) { msg_set_bits(m, 9, 16, 0xffff, n); } |
10724cc7b
|
816 |
static inline u32 msg_conn_ack(struct tipc_msg *m) |
b97bf3fd8
|
817 818 819 |
{ return msg_bits(m, 9, 16, 0xffff); } |
10724cc7b
|
820 |
static inline void msg_set_conn_ack(struct tipc_msg *m, u32 n) |
b97bf3fd8
|
821 822 823 |
{ msg_set_bits(m, 9, 16, 0xffff, n); } |
b7d426355
|
824 |
static inline u16 msg_adv_win(struct tipc_msg *m) |
10724cc7b
|
825 826 827 |
{ return msg_bits(m, 9, 0, 0xffff); } |
b7d426355
|
828 |
static inline void msg_set_adv_win(struct tipc_msg *m, u16 n) |
10724cc7b
|
829 830 831 |
{ msg_set_bits(m, 9, 0, 0xffff, n); } |
c43072852
|
832 |
static inline u32 msg_max_pkt(struct tipc_msg *m) |
b97bf3fd8
|
833 |
{ |
a02cec215
|
834 |
return msg_bits(m, 9, 16, 0xffff) * 4; |
b97bf3fd8
|
835 |
} |
c43072852
|
836 |
static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) |
b97bf3fd8
|
837 838 839 840 841 842 843 844 845 846 847 848 849 |
{ msg_set_bits(m, 9, 16, 0xffff, (n / 4)); } static inline u32 msg_link_tolerance(struct tipc_msg *m) { return msg_bits(m, 9, 0, 0xffff); } static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) { msg_set_bits(m, 9, 0, 0xffff, n); } |
75da2163d
|
850 851 852 853 854 855 856 857 858 |
static inline u16 msg_grp_bc_syncpt(struct tipc_msg *m) { return msg_bits(m, 9, 16, 0xffff); } static inline void msg_set_grp_bc_syncpt(struct tipc_msg *m, u16 n) { msg_set_bits(m, 9, 16, 0xffff, n); } |
2f487712b
|
859 860 861 862 863 864 865 866 867 |
static inline u16 msg_grp_bc_acked(struct tipc_msg *m) { return msg_bits(m, 9, 16, 0xffff); } static inline void msg_set_grp_bc_acked(struct tipc_msg *m, u16 n) { msg_set_bits(m, 9, 16, 0xffff, n); } |
04d7b574b
|
868 869 870 871 872 873 874 875 876 |
static inline u16 msg_grp_remitted(struct tipc_msg *m) { return msg_bits(m, 9, 16, 0xffff); } static inline void msg_set_grp_remitted(struct tipc_msg *m, u16 n) { msg_set_bits(m, 9, 16, 0xffff, n); } |
75da2163d
|
877 878 |
/* Word 10 */ |
ae236fb20
|
879 880 881 882 883 884 885 886 887 |
static inline u16 msg_grp_evt(struct tipc_msg *m) { return msg_bits(m, 10, 0, 0x3); } static inline void msg_set_grp_evt(struct tipc_msg *m, int n) { msg_set_bits(m, 10, 0, 0x3, n); } |
2f487712b
|
888 889 890 891 892 893 894 895 896 |
static inline u16 msg_grp_bc_ack_req(struct tipc_msg *m) { return msg_bits(m, 10, 0, 0x1); } static inline void msg_set_grp_bc_ack_req(struct tipc_msg *m, bool n) { msg_set_bits(m, 10, 0, 0x1, n); } |
75da2163d
|
897 898 899 900 901 902 903 904 905 |
static inline u16 msg_grp_bc_seqno(struct tipc_msg *m) { return msg_bits(m, 10, 16, 0xffff); } static inline void msg_set_grp_bc_seqno(struct tipc_msg *m, u32 n) { msg_set_bits(m, 10, 16, 0xffff, n); } |
6e498158a
|
906 |
static inline bool msg_peer_link_is_up(struct tipc_msg *m) |
1a20cc254
|
907 |
{ |
d999297c3
|
908 |
if (likely(msg_user(m) != LINK_PROTOCOL)) |
1a20cc254
|
909 |
return true; |
6e498158a
|
910 911 912 |
if (msg_type(m) == STATE_MSG) return true; return false; |
d999297c3
|
913 |
} |
6e498158a
|
914 |
static inline bool msg_peer_node_is_up(struct tipc_msg *m) |
d999297c3
|
915 |
{ |
6e498158a
|
916 917 |
if (msg_peer_link_is_up(m)) return true; |
1a20cc254
|
918 919 |
return msg_redundant_link(m); } |
5b7066c3d
|
920 921 922 923 |
static inline bool msg_is_reset(struct tipc_msg *hdr) { return (msg_user(hdr) == LINK_PROTOCOL) && (msg_type(hdr) == RESET_MSG); } |
25b0b9c4e
|
924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 |
static inline u32 msg_sugg_node_addr(struct tipc_msg *m) { return msg_word(m, 14); } static inline void msg_set_sugg_node_addr(struct tipc_msg *m, u32 n) { msg_set_word(m, 14, n); } static inline void msg_set_node_id(struct tipc_msg *hdr, u8 *id) { memcpy(msg_data(hdr), id, 16); } static inline u8 *msg_node_id(struct tipc_msg *hdr) { return (u8 *)msg_data(hdr); } |
57d5f64d8
|
943 |
struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp); |
d618d09a6
|
944 |
bool tipc_msg_validate(struct sk_buff **_skb); |
bcd3ffd4f
|
945 |
bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err); |
64ac5f597
|
946 947 |
void tipc_skb_reject(struct net *net, int err, struct sk_buff *skb, struct sk_buff_head *xmitq); |
c5898636c
|
948 |
void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type, |
347475395
|
949 |
u32 hsize, u32 destnode); |
e3a77561e
|
950 951 952 |
struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz, uint data_sz, u32 dnode, u32 onode, u32 dport, u32 oport, int errcode); |
37e22164a
|
953 |
int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf); |
dd3f9e70f
|
954 955 956 |
bool tipc_msg_bundle(struct sk_buff *skb, struct tipc_msg *msg, u32 mtu); bool tipc_msg_make_bundle(struct sk_buff **skb, struct tipc_msg *msg, u32 mtu, u32 dnode); |
c637c1035
|
957 |
bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos); |
2320bcdae
|
958 959 |
int tipc_msg_fragment(struct sk_buff *skb, const struct tipc_msg *hdr, int pktmax, struct sk_buff_head *frags); |
c5898636c
|
960 |
int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, |
347475395
|
961 |
int offset, int dsz, int mtu, struct sk_buff_head *list); |
cda3696d3
|
962 |
bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err); |
4c94cc2d3
|
963 |
bool tipc_msg_assemble(struct sk_buff_head *list); |
2f5661245
|
964 |
bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq); |
a853e4c6d
|
965 966 |
bool tipc_msg_pskb_copy(u32 dst, struct sk_buff_head *msg, struct sk_buff_head *cpy); |
8306f99a5
|
967 968 |
void __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno, struct sk_buff *skb); |
678792747
|
969 |
bool tipc_msg_skb_clone(struct sk_buff_head *msg, struct sk_buff_head *cpy); |
078bec826
|
970 |
|
e4bf4f769
|
971 972 973 974 |
static inline u16 buf_seqno(struct sk_buff *skb) { return msg_seqno(buf_msg(skb)); } |
d618d09a6
|
975 976 977 978 |
static inline int buf_roundup_len(struct sk_buff *skb) { return (skb->len / 1024 + 1) * 1024; } |
cb1b72809
|
979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 |
/* tipc_skb_peek(): peek and reserve first buffer in list * @list: list to be peeked in * Returns pointer to first buffer in list, if any */ static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list, spinlock_t *lock) { struct sk_buff *skb; spin_lock_bh(lock); skb = skb_peek(list); if (skb) skb_get(skb); spin_unlock_bh(lock); return skb; } |
c637c1035
|
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 |
/* tipc_skb_peek_port(): find a destination port, ignoring all destinations * up to and including 'filter'. * Note: ignoring previously tried destinations minimizes the risk of * contention on the socket lock * @list: list to be peeked in * @filter: last destination to be ignored from search * Returns a destination port number, of applicable. */ static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter) { struct sk_buff *skb; u32 dport = 0; bool ignore = true; spin_lock_bh(&list->lock); skb_queue_walk(list, skb) { dport = msg_destport(buf_msg(skb)); if (!filter || skb_queue_is_last(list, skb)) break; if (dport == filter) ignore = false; else if (!ignore) break; } spin_unlock_bh(&list->lock); return dport; } /* tipc_skb_dequeue(): unlink first buffer with dest 'dport' from list * @list: list to be unlinked from * @dport: selection criteria for buffer to unlink */ static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list, u32 dport) { struct sk_buff *_skb, *tmp, *skb = NULL; spin_lock_bh(&list->lock); skb_queue_walk_safe(list, _skb, tmp) { if (msg_destport(buf_msg(_skb)) == dport) { __skb_unlink(_skb, list); skb = _skb; break; } } spin_unlock_bh(&list->lock); return skb; } |
598411d70
|
1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 |
/* tipc_skb_queue_splice_tail - append an skb list to lock protected list * @list: the new list to append. Not lock protected * @head: target list. Lock protected. */ static inline void tipc_skb_queue_splice_tail(struct sk_buff_head *list, struct sk_buff_head *head) { spin_lock_bh(&head->lock); skb_queue_splice_tail(list, head); spin_unlock_bh(&head->lock); } /* tipc_skb_queue_splice_tail_init - merge two lock protected skb lists * @list: the new list to add. Lock protected. Will be reinitialized * @head: target list. Lock protected. */ static inline void tipc_skb_queue_splice_tail_init(struct sk_buff_head *list, struct sk_buff_head *head) { struct sk_buff_head tmp; __skb_queue_head_init(&tmp); spin_lock_bh(&list->lock); skb_queue_splice_tail_init(list, &tmp); spin_unlock_bh(&list->lock); tipc_skb_queue_splice_tail(&tmp, head); } |
382f598fb
|
1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 |
/* __tipc_skb_dequeue() - dequeue the head skb according to expected seqno * @list: list to be dequeued from * @seqno: seqno of the expected msg * * returns skb dequeued from the list if its seqno is less than or equal to * the expected one, otherwise the skb is still hold * * Note: must be used with appropriate locks held only */ static inline struct sk_buff *__tipc_skb_dequeue(struct sk_buff_head *list, u16 seqno) { struct sk_buff *skb = skb_peek(list); if (skb && less_eq(buf_seqno(skb), seqno)) { __skb_unlink(skb, list); return skb; } return NULL; } |
b97bf3fd8
|
1091 |
#endif |