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 2010 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 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* 34 * Attribute types and structures. 35 */ 36 #define PATTR_DSTADDRSAP 0x1 /* destination physical address+SAP */ 37 #define PATTR_SRCADDRSAP 0x2 /* source physical address+SAP */ 38 #define PATTR_HCKSUM 0x3 /* hardware checksum attribute */ 39 #define PATTR_ZCOPY 0x4 /* zerocopy attribute */ 40 41 /* 42 * Structure shared by {source,destination} physical address+SAP attributes. 43 */ 44 typedef struct pattr_addr_s { 45 uint8_t addr_is_group; /* address is broadcast or multicast */ 46 uint8_t addr_len; /* length of address */ 47 uint8_t addr[1]; /* address */ 48 } pattr_addr_t; 49 50 /* 51 * Structure used for Hardware Checksum attribute. 52 */ 53 54 typedef struct pattr_hcksum_s { 55 uint32_t hcksum_start_offset; 56 uint32_t hcksum_stuff_offset; 57 uint32_t hcksum_end_offset; 58 union { 59 uint64_t value; 60 uint16_t inet_cksum; /* to store H/W computed cksum value */ 61 } hcksum_cksum_val; 62 uint32_t hcksum_flags; 63 } pattr_hcksum_t; 64 65 /* 66 * Values for hcksum_flags 67 */ 68 #define HCK_IPV4_HDRCKSUM 0x01 /* On Transmit: Compute IP header */ 69 /* checksum in hardware. */ 70 71 #define HCK_IPV4_HDRCKSUM_OK 0x01 /* On Receive: IP header checksum */ 72 /* was verified by h/w and is */ 73 /* correct. */ 74 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 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 88 #define HCK_FULLCKSUM_OK 0x08 /* On Transmit: N/A */ 89 /* On Receive: Full checksum status */ 90 /* If set, implies full checksum */ 91 /* computation was successful */ 92 /* i.e. checksum was correct. */ 93 /* If it is not set, IP will also */ 94 /* check the attached h/w computed */ 95 /* checksum value to determine if */ 96 /* checksum was bad */ 97 98 #define HCK_FLAGS (HCK_IPV4_HDRCKSUM | HCK_PARTIALCKSUM | \ 99 HCK_FULLCKSUM | HCK_FULLCKSUM_OK) 100 /* 101 * Extended hardware offloading flags that also use hcksum_flags 102 */ 103 #define HW_LSO 0x10 /* On Transmit: hardware does LSO */ 104 /* On Receive: N/A */ 105 106 #define HW_LSO_FLAGS HW_LSO /* All LSO flags, currently only one */ 107 108 /* 109 * Structure used for zerocopy attribute. 110 */ 111 typedef struct pattr_zcopy_s { 112 uint_t zcopy_flags; 113 } pattr_zcopy_t; 114 115 #ifdef __cplusplus 116 } 117 #endif 118 119 #endif /* _SYS_PATTR_H */ 120