1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1997, 2002-2003 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _INET_SACK_H 28*0Sstevel@tonic-gate #define _INET_SACK_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <netinet/tcp.h> /* for tcp_seq */ 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #ifdef __cplusplus 35*0Sstevel@tonic-gate extern "C" { 36*0Sstevel@tonic-gate #endif 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate /* Maximum num of receiver's SACK blocks */ 39*0Sstevel@tonic-gate #define MAX_SACK_BLK 5 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate /* Receiver's SACK blk structure */ 42*0Sstevel@tonic-gate typedef struct sack_blk 43*0Sstevel@tonic-gate { 44*0Sstevel@tonic-gate tcp_seq begin; 45*0Sstevel@tonic-gate tcp_seq end; 46*0Sstevel@tonic-gate } sack_blk_t; 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate /* Sender's notsack'ed blk structure */ 49*0Sstevel@tonic-gate typedef struct notsack_blk 50*0Sstevel@tonic-gate { 51*0Sstevel@tonic-gate struct notsack_blk *next; 52*0Sstevel@tonic-gate tcp_seq begin; 53*0Sstevel@tonic-gate tcp_seq end; 54*0Sstevel@tonic-gate uint32_t sack_cnt; /* Dup SACK count */ 55*0Sstevel@tonic-gate } notsack_blk_t; 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate /* SACK information in the tcp_t structure. */ 59*0Sstevel@tonic-gate typedef struct 60*0Sstevel@tonic-gate { 61*0Sstevel@tonic-gate int32_t tcp_pipe; /* # of bytes in network */ 62*0Sstevel@tonic-gate tcp_seq tcp_fack; /* highest sack'ed seq num */ 63*0Sstevel@tonic-gate tcp_seq tcp_sack_snxt; /* next seq num to be rexmited using SACK. */ 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate int32_t tcp_max_sack_blk; /* max # of SACK info blk in a segment */ 66*0Sstevel@tonic-gate int32_t tcp_num_sack_blk; /* num of blks in sack list */ 67*0Sstevel@tonic-gate sack_blk_t tcp_sack_list[MAX_SACK_BLK]; /* the sack list */ 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate /* num of blks in notsack list */ 70*0Sstevel@tonic-gate int32_t tcp_num_notsack_blk; 71*0Sstevel@tonic-gate /* # of bytes represented in blks in notsack list */ 72*0Sstevel@tonic-gate uint32_t tcp_cnt_notsack_list; 73*0Sstevel@tonic-gate /* the notsack list */ 74*0Sstevel@tonic-gate notsack_blk_t *tcp_notsack_list; 75*0Sstevel@tonic-gate } tcp_sack_info_t; 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate extern void tcp_sack_insert(sack_blk_t *, tcp_seq, tcp_seq, int32_t *); 78*0Sstevel@tonic-gate extern void tcp_sack_remove(sack_blk_t *, tcp_seq, int32_t *); 79*0Sstevel@tonic-gate extern void tcp_notsack_insert(notsack_blk_t **, tcp_seq, tcp_seq, 80*0Sstevel@tonic-gate int32_t *, uint32_t *); 81*0Sstevel@tonic-gate extern void tcp_notsack_remove(notsack_blk_t **, tcp_seq, int32_t *, 82*0Sstevel@tonic-gate uint32_t *); 83*0Sstevel@tonic-gate extern void tcp_notsack_update(notsack_blk_t **, tcp_seq, tcp_seq, 84*0Sstevel@tonic-gate int32_t *, uint32_t *); 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* 88*0Sstevel@tonic-gate * Macro to remove all the notsack'ed blks in sender. 89*0Sstevel@tonic-gate * 90*0Sstevel@tonic-gate * Param: 91*0Sstevel@tonic-gate * notsack_blk_t *head: pointer to the head of the list of notsack'ed blks. 92*0Sstevel@tonic-gate */ 93*0Sstevel@tonic-gate #define TCP_NOTSACK_REMOVE_ALL(head) \ 94*0Sstevel@tonic-gate { \ 95*0Sstevel@tonic-gate notsack_blk_t *prev, *tmp; \ 96*0Sstevel@tonic-gate tmp = (head); \ 97*0Sstevel@tonic-gate do { \ 98*0Sstevel@tonic-gate prev = tmp; \ 99*0Sstevel@tonic-gate tmp = tmp->next; \ 100*0Sstevel@tonic-gate bkmem_free((caddr_t)prev, sizeof (notsack_blk_t)); \ 101*0Sstevel@tonic-gate } while (tmp != NULL); \ 102*0Sstevel@tonic-gate (head) = NULL; \ 103*0Sstevel@tonic-gate } 104*0Sstevel@tonic-gate 105*0Sstevel@tonic-gate #ifdef __cplusplus 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate #endif 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate #endif /* _INET_SACK_H */ 110