1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_PATTR_H 28 #define _SYS_PATTR_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Attribute types and structures. 38 */ 39 #define PATTR_DSTADDRSAP 0x1 /* destination physical address+SAP */ 40 #define PATTR_SRCADDRSAP 0x2 /* source physical address+SAP */ 41 #define PATTR_HCKSUM 0x3 /* hardware checksum attribute */ 42 #define PATTR_ZCOPY 0x4 /* zerocopy attribute */ 43 44 /* 45 * Structure shared by {source,destination} physical address+SAP attributes. 46 */ 47 typedef struct pattr_addr_s { 48 uint8_t addr_is_group; /* address is broadcast or multicast */ 49 uint8_t addr_len; /* length of address */ 50 uint8_t addr[1]; /* address */ 51 } pattr_addr_t; 52 53 /* 54 * Structure used for Hardware Checksum attribute. 55 */ 56 57 typedef struct pattr_hcksum_s { 58 uint32_t hcksum_start_offset; 59 uint32_t hcksum_stuff_offset; 60 uint32_t hcksum_end_offset; 61 union { 62 uint64_t value; 63 uint16_t inet_cksum; /* to store H/W computed cksum value */ 64 } hcksum_cksum_val; 65 uint32_t hcksum_flags; 66 } pattr_hcksum_t; 67 68 /* 69 * Values for hcksum_flags 70 */ 71 #define HCK_IPV4_HDRCKSUM 0x01 /* On Transmit: Compute IP header */ 72 /* checksum in hardware. */ 73 /* On Receive: IP header checksum */ 74 /* was verified by h/w and is */ 75 /* correct. */ 76 #define HCK_PARTIALCKSUM 0x02 /* On Transmit: Compute partial 1's */ 77 /* complement checksum based on */ 78 /* start, stuff and end offsets. */ 79 /* On Receive : Partial checksum */ 80 /* computed and attached. */ 81 #define HCK_FULLCKSUM 0x04 /* On Transmit: Compute full(in case */ 82 /* of TCP/UDP, full is pseudo-header */ 83 /* + header + payload) checksum for */ 84 /* this packet. */ 85 /* On Receive : Full checksum */ 86 /* computed in h/w and is attached */ 87 #define HCK_FULLCKSUM_OK 0x08 /* On Transmit: N/A */ 88 /* On Receive: Full checksum status */ 89 /* If set, implies full checksum */ 90 /* computation was successful */ 91 /* i.e. checksum was correct. */ 92 /* If it is not set, IP will also */ 93 /* check the attached h/w computed */ 94 /* checksum value to determine if */ 95 /* checksum was bad */ 96 97 /* 98 * Structure used for zerocopy attribute. 99 */ 100 typedef struct pattr_zcopy_s { 101 uint_t zcopy_flags; 102 } pattr_zcopy_t; 103 104 #ifdef __cplusplus 105 } 106 #endif 107 108 #endif /* _SYS_PATTR_H */ 109