| sctputil.c (214918) | sctputil.c (214939) |
|---|---|
| 1/*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. --- 17 unchanged lines hidden (view full) --- 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* $KAME: sctputil.c,v 1.37 2005/03/07 23:26:09 itojun Exp $ */ 32 33#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. --- 17 unchanged lines hidden (view full) --- 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* $KAME: sctputil.c,v 1.37 2005/03/07 23:26:09 itojun Exp $ */ 32 33#include <sys/cdefs.h> |
| 34__FBSDID("$FreeBSD: head/sys/netinet/sctputil.c 214918 2010-11-07 14:39:40Z tuexen $"); | 34__FBSDID("$FreeBSD: head/sys/netinet/sctputil.c 214939 2010-11-07 18:50:35Z tuexen $"); |
| 35 36#include <netinet/sctp_os.h> 37#include <netinet/sctp_pcb.h> 38#include <netinet/sctputil.h> 39#include <netinet/sctp_var.h> 40#include <netinet/sctp_sysctl.h> 41#ifdef INET6 42#endif 43#include <netinet/sctp_header.h> 44#include <netinet/sctp_output.h> 45#include <netinet/sctp_uio.h> 46#include <netinet/sctp_timer.h> 47#include <netinet/sctp_indata.h>/* for sctp_deliver_data() */ 48#include <netinet/sctp_auth.h> 49#include <netinet/sctp_asconf.h> 50#include <netinet/sctp_cc_functions.h> 51#include <netinet/sctp_bsd_addr.h> 52 | 35 36#include <netinet/sctp_os.h> 37#include <netinet/sctp_pcb.h> 38#include <netinet/sctputil.h> 39#include <netinet/sctp_var.h> 40#include <netinet/sctp_sysctl.h> 41#ifdef INET6 42#endif 43#include <netinet/sctp_header.h> 44#include <netinet/sctp_output.h> 45#include <netinet/sctp_uio.h> 46#include <netinet/sctp_timer.h> 47#include <netinet/sctp_indata.h>/* for sctp_deliver_data() */ 48#include <netinet/sctp_auth.h> 49#include <netinet/sctp_asconf.h> 50#include <netinet/sctp_cc_functions.h> 51#include <netinet/sctp_bsd_addr.h> 52 |
| 53#define NUMBER_OF_MTU_SIZES 18 | |
| 54 | 53 |
| 55 | |
| 56#ifndef KTR_SCTP 57#define KTR_SCTP KTR_SUBSYS 58#endif 59 60void 61sctp_sblog(struct sockbuf *sb, 62 struct sctp_tcb *stcb, int from, int incr) 63{ --- 684 unchanged lines hidden (view full) --- 748 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); 749 } 750} 751 752/* 753 * a list of sizes based on typical mtu's, used only if next hop size not 754 * returned. 755 */ | 54#ifndef KTR_SCTP 55#define KTR_SCTP KTR_SUBSYS 56#endif 57 58void 59sctp_sblog(struct sockbuf *sb, 60 struct sctp_tcb *stcb, int from, int incr) 61{ --- 684 unchanged lines hidden (view full) --- 746 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); 747 } 748} 749 750/* 751 * a list of sizes based on typical mtu's, used only if next hop size not 752 * returned. 753 */ |
| 756static int sctp_mtu_sizes[] = { | 754static uint32_t sctp_mtu_sizes[] = { |
| 757 68, 758 296, 759 508, 760 512, 761 544, 762 576, 763 1006, 764 1492, --- 4 unchanged lines hidden (view full) --- 769 4352, 770 4464, 771 8166, 772 17914, 773 32000, 774 65535 775}; 776 | 755 68, 756 296, 757 508, 758 512, 759 544, 760 576, 761 1006, 762 1492, --- 4 unchanged lines hidden (view full) --- 767 4352, 768 4464, 769 8166, 770 17914, 771 32000, 772 65535 773}; 774 |
| 777int 778find_next_best_mtu(int totsz) | 775/* 776 * Return the largest MTU smaller than val. If there is no 777 * entry, just return val. 778 */ 779uint32_t 780sctp_get_prev_mtu(uint32_t val) |
| 779{ | 781{ |
| 780 int i, perfer; | 782 uint32_t i; |
| 781 | 783 |
| 782 /* 783 * if we are in here we must find the next best fit based on the 784 * size of the dg that failed to be sent. 785 */ 786 perfer = 0; 787 for (i = 0; i < NUMBER_OF_MTU_SIZES; i++) { 788 if (totsz < sctp_mtu_sizes[i]) { 789 perfer = i - 1; 790 if (perfer < 0) 791 perfer = 0; | 784 if (val <= sctp_mtu_sizes[0]) { 785 return (val); 786 } 787 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 788 if (val <= sctp_mtu_sizes[i]) { |
| 792 break; 793 } 794 } | 789 break; 790 } 791 } |
| 795 return (sctp_mtu_sizes[perfer]); | 792 return (sctp_mtu_sizes[i - 1]); |
| 796} 797 | 793} 794 |
| 795/* 796 * Return the smallest MTU larger than val. If there is no 797 * entry, just return val. 798 */ 799uint32_t 800sctp_get_next_mtu(struct sctp_inpcb *inp, uint32_t val) 801{ 802 /* select another MTU that is just bigger than this one */ 803 uint32_t i; 804 805 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 806 if (val < sctp_mtu_sizes[i]) { 807 return (sctp_mtu_sizes[i]); 808 } 809 } 810 return (val); 811} 812 |
|
| 798void 799sctp_fill_random_store(struct sctp_pcb *m) 800{ 801 /* 802 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and 803 * our counter. The result becomes our good random numbers and we 804 * then setup to give these out. Note that we do no locking to 805 * protect this. This is ok, since if competing folks call this we --- 6151 unchanged lines hidden --- | 813void 814sctp_fill_random_store(struct sctp_pcb *m) 815{ 816 /* 817 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and 818 * our counter. The result becomes our good random numbers and we 819 * then setup to give these out. Note that we do no locking to 820 * protect this. This is ok, since if competing folks call this we --- 6151 unchanged lines hidden --- |