| sctp_constants.h (168124) | sctp_constants.h (168299) |
|---|---|
| 1/*- 2 * Copyright (c) 2001-2007, 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: sctp_constants.h,v 1.17 2005/03/06 16:04:17 itojun Exp $ */ 32 33#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2001-2007, 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: sctp_constants.h,v 1.17 2005/03/06 16:04:17 itojun Exp $ */ 32 33#include <sys/cdefs.h> |
| 34__FBSDID("$FreeBSD: head/sys/netinet/sctp_constants.h 168124 2007-03-31 11:47:30Z rrs $"); | 34__FBSDID("$FreeBSD: head/sys/netinet/sctp_constants.h 168299 2007-04-03 11:15:32Z rrs $"); |
| 35 36#ifndef __sctp_constants_h__ 37#define __sctp_constants_h__ 38 39/* Number of packets to get before sack sent by default */ 40#define SCTP_DEFAULT_SACK_FREQ 2 41 42/* Address limit - This variable is calculated | 35 36#ifndef __sctp_constants_h__ 37#define __sctp_constants_h__ 38 39/* Number of packets to get before sack sent by default */ 40#define SCTP_DEFAULT_SACK_FREQ 2 41 42/* Address limit - This variable is calculated |
| 43 * based on an 1500 byte mtu. We take out 100 bytes | 43 * based on an 65535 byte max ip packet. We take out 100 bytes |
| 44 * for the cookie, 40 bytes for a v6 header and 32 45 * bytes for the init structure. A second init structure 46 * for the init-ack and then finally a third one for the 47 * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes. | 44 * for the cookie, 40 bytes for a v6 header and 32 45 * bytes for the init structure. A second init structure 46 * for the init-ack and then finally a third one for the 47 * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes. |
| 48 * This leaves 1264 bytes for addresses. Now whatever we 49 * send in the INIT() we need to allow to get back in the | 48 * This leaves 65299 bytes for addresses. We throw out the 299 bytes. 49 * Now whatever we send in the INIT() we need to allow to get back in the |
| 50 * INIT-ACK plus all the values from INIT and INIT-ACK 51 * listed in the cookie. Plus we need some overhead for 52 * maybe copied parameters in the COOKIE. If we | 50 * INIT-ACK plus all the values from INIT and INIT-ACK 51 * listed in the cookie. Plus we need some overhead for 52 * maybe copied parameters in the COOKIE. If we |
| 53 * allow 20 addresses, and each side has 20 V6 addresses 54 * that will be 400 bytes. In the INIT-ACK we will 55 * see the INIT-ACK 400 + 800 in the cookie. This leaves 56 * 64 bytes slack for misc things in the cookie. Otherwise 57 * we need to allow IP fragmentation.. which I believe 58 * the INIT-ACK and COOKIE do, I don't think we do that 59 * to the INIT though. So the max you could make this 60 * value is 60 addresses. | 53 * allow 1080 addresses, and each side has 1080 V6 addresses 54 * that will be 21600 bytes. In the INIT-ACK we will 55 * see the INIT-ACK 21600 + 43200 in the cookie. This leaves 56 * about 500 bytes slack for misc things in the cookie. |
| 61 */ | 57 */ |
| 62#define SCTP_ADDRESS_LIMIT 20 | 58#define SCTP_ADDRESS_LIMIT 1080 |
| 63 64/* Number of addresses where we just skip the counting */ 65#define SCTP_COUNT_LIMIT 40 66 67/* Number of ticks to delay before running 68 * iterator on an address change. 69 */ 70#define SCTP_ADDRESS_TICK_DELAY 2 --- 957 unchanged lines hidden --- | 59 60/* Number of addresses where we just skip the counting */ 61#define SCTP_COUNT_LIMIT 40 62 63/* Number of ticks to delay before running 64 * iterator on an address change. 65 */ 66#define SCTP_ADDRESS_TICK_DELAY 2 --- 957 unchanged lines hidden --- |