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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_PATTR_H 27 #define _SYS_PATTR_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * Attribute types and structures. 37 */ 38 #define PATTR_DSTADDRSAP 0x1 /* destination physical address+SAP */ 39 #define PATTR_SRCADDRSAP 0x2 /* source physical address+SAP */ 40 #define PATTR_HCKSUM 0x3 /* hardware checksum attribute */ 41 #define PATTR_ZCOPY 0x4 /* zerocopy attribute */ 42 43 /* 44 * Structure shared by {source,destination} physical address+SAP attributes. 45 */ 46 typedef struct pattr_addr_s { 47 uint8_t addr_is_group; /* address is broadcast or multicast */ 48 uint8_t addr_len; /* length of address */ 49 uint8_t addr[1]; /* address */ 50 } pattr_addr_t; 51 52 /* 53 * Structure used for Hardware Checksum attribute. 54 */ 55 56 typedef struct pattr_hcksum_s { 57 uint32_t hcksum_start_offset; 58 uint32_t hcksum_stuff_offset; 59 uint32_t hcksum_end_offset; 60 union { 61 uint64_t value; 62 uint16_t inet_cksum; /* to store H/W computed cksum value */ 63 } hcksum_cksum_val; 64 uint32_t hcksum_flags; 65 } pattr_hcksum_t; 66 67 /* 68 * Values for hcksum_flags 69 */ 70 #define HCK_IPV4_HDRCKSUM 0x01 /* On Transmit: Compute IP header */ 71 /* checksum in hardware. */ 72 /* On Receive: IP header checksum */ 73 /* was verified by h/w and is */ 74 /* correct. */ 75 #define HCK_PARTIALCKSUM 0x02 /* On Transmit: Compute partial 1's */ 76 /* complement checksum based on */ 77 /* start, stuff and end offsets. */ 78 /* On Receive : Partial checksum */ 79 /* computed and attached. */ 80 #define HCK_FULLCKSUM 0x04 /* On Transmit: Compute full(in case */ 81 /* of TCP/UDP, full is pseudo-header */ 82 /* + header + payload) checksum for */ 83 /* this packet. */ 84 /* On Receive : Full checksum */ 85 /* computed in h/w and is attached */ 86 #define HCK_FULLCKSUM_OK 0x08 /* On Transmit: N/A */ 87 /* On Receive: Full checksum status */ 88 /* If set, implies full checksum */ 89 /* computation was successful */ 90 /* i.e. checksum was correct. */ 91 /* If it is not set, IP will also */ 92 /* check the attached h/w computed */ 93 /* checksum value to determine if */ 94 /* checksum was bad */ 95 /* 96 * Extended hardware offloading flags that also use hcksum_flags 97 */ 98 #define HW_LSO 0x10 /* On Transmit: hardware does LSO */ 99 /* On Receive: N/A */ 100 101 102 /* 103 * Structure used for zerocopy attribute. 104 */ 105 typedef struct pattr_zcopy_s { 106 uint_t zcopy_flags; 107 } pattr_zcopy_t; 108 109 #ifdef __cplusplus 110 } 111 #endif 112 113 #endif /* _SYS_PATTR_H */ 114