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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright 2018 Joyent, Inc.
*/
#ifndef _SYS_PATTR_H
#define _SYS_PATTR_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* Attribute types and structures.
*/
#define PATTR_DSTADDRSAP 0x1 /* destination physical address+SAP */
#define PATTR_SRCADDRSAP 0x2 /* source physical address+SAP */
#define PATTR_HCKSUM 0x3 /* hardware checksum attribute */
#define PATTR_ZCOPY 0x4 /* zerocopy attribute */
/*
* Structure shared by {source,destination} physical address+SAP attributes.
*/
typedef struct pattr_addr_s {
uint8_t addr_is_group; /* address is broadcast or multicast */
uint8_t addr_len; /* length of address */
uint8_t addr[1]; /* address */
} pattr_addr_t;
/*
* Structure used for Hardware Checksum attribute.
*/
typedef struct pattr_hcksum_s {
uint32_t hcksum_start_offset;
uint32_t hcksum_stuff_offset;
uint32_t hcksum_end_offset;
union {
uint64_t value;
uint16_t inet_cksum; /* to store H/W computed cksum value */
} hcksum_cksum_val;
uint32_t hcksum_flags;
} pattr_hcksum_t;
/*
* Values for hcksum_flags
*/
#define HCK_IPV4_HDRCKSUM 0x01 /* On Transmit: Compute IP header */
/* checksum in hardware. */
#define HCK_IPV4_HDRCKSUM_OK 0x01 /* On Receive: IP header checksum */
/* was verified by h/w and is */
/* correct. */
#define HCK_PARTIALCKSUM 0x02 /* On Transmit: Compute partial 1's */
/* complement checksum based on */
/* start, stuff and end offsets. */
/* On Receive : Partial checksum */
/* computed and attached. */
#define HCK_FULLCKSUM 0x04 /* On Transmit: Compute full(in case */
/* of TCP/UDP, full is pseudo-header */
/* + header + payload) checksum for */
/* this packet. */
/* On Receive : Full checksum */
/* computed in h/w and is attached */
#define HCK_FULLCKSUM_OK 0x08 /* On Transmit: N/A */
/* On Receive: Full checksum status */
/* If set, implies full checksum */
/* computation was successful */
/* i.e. checksum was correct. */
/* If it is not set, IP will also */
/* check the attached h/w computed */
/* checksum value to determine if */
/* checksum was bad */
#define HCK_FLAGS (HCK_IPV4_HDRCKSUM | HCK_PARTIALCKSUM | \
HCK_FULLCKSUM | HCK_FULLCKSUM_OK)
/*
* Extended hardware offloading flags that also use hcksum_flags
*/
#define HW_LSO 0x10 /* On Transmit: hardware does LSO */
/* On Receive: N/A */
#define HW_LSO_FLAGS HW_LSO /* All LSO flags, currently only one */
/*
* The packet originates from a MAC on the same machine as the
* receiving MAC. There are two ways this can happen.
*
* 1. MAC loopback: When a packet is destined for a MAC client on the
* same MAC as the sender. This datapath is taken in
* max_tx_send().
*
* 2. Bridge Fwd: When a packet is destined for a MAC client on the
* same bridge as the sender. This datapath is taken in
* bridge_forward().
*
* Presented with this flag, a receiver can then decide whether or not
* it needs to emulate some or all of the HW offloads that the NIC
* would have performed otherwise -- or whether it should accept the
* packet as-is.
*/
#define HW_LOCAL_MAC 0x100
/*
* Structure used for zerocopy attribute.
*/
typedef struct pattr_zcopy_s {
uint_t zcopy_flags;
} pattr_zcopy_t;
#ifdef __cplusplus
}
#endif
#endif /* _SYS_PATTR_H */
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