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/* Copyright 2008-2012 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* DPA Offloading Driver General Data Types.
*/
#ifndef __FSL_DPA_OFFLOAD_H
#define __FSL_DPA_OFFLOAD_H
#include <linux/if_ether.h>
#include <linux/ip.h>
/* General definitions */
#define DPA_OFFLD_IPv4_ADDR_LEN_BYTES 4
#define DPA_OFFLD_IPv6_ADDR_LEN_BYTES 16
#define DPA_OFFLD_IPv6_ADDR_LEN_WORDS 4
#define DPA_OFFLD_IPv6_ADDR_LEN_LONG 2
/* Maximum size of a lookup key, in bytes */
#define DPA_OFFLD_MAXENTRYKEYSIZE 56
#define DPA_OFFLD_DESC_NONE -1
#define DPA_OFFLD_INVALID_OBJECT_ID -1
#define log_err(...) \
do { \
pr_err("Error - %s:%d (%s)\n", \
__FILE__, __LINE__, __func__); \
pr_err(__VA_ARGS__); \
} while (0);
#define log_warn(...) \
do { \
pr_warn("Warning - %s:%d (%s)\n", \
__FILE__, __LINE__, __func__); \
pr_warn(__VA_ARGS__); \
} while (0);
/* Description of lookup key */
struct dpa_offload_lookup_key {
/*
* The data (bytes) of the key. For indexed tables the index is the
* first byte of this array
*/
uint8_t *byte;
/*
* The mask of the key. The bits corresponding to zeros in the mask are
* ignored. NULL is the table doesn't have the mask support enabled.
*/
uint8_t *mask;
/*
* The size of the key in bytes. Must not exceed
* DPA_OFFLD_MAXENTRYKEYSIZE
*/
uint8_t size;
};
/* Description of the IPv4 address */
union dpa_offload_ipv4_address {
/* Address as 32bit word */
uint32_t word;
/* Address as byte array*/
uint8_t byte[DPA_OFFLD_IPv4_ADDR_LEN_BYTES];
};
/* Description of the IPv6 address */
union dpa_offload_ipv6_address {
/* Address as byte array*/
uint8_t byte[DPA_OFFLD_IPv6_ADDR_LEN_BYTES];
/* Address as word array */
uint32_t word[DPA_OFFLD_IPv6_ADDR_LEN_WORDS];
/* Address as long word */
uint64_t lword[DPA_OFFLD_IPv6_ADDR_LEN_LONG];
};
struct dpa_offload_ip_address {
/*
* IP version. Must be either 4 or 6. No other values are considered
* valid.
*/
unsigned int version;
union {
union dpa_offload_ipv4_address ipv4;
union dpa_offload_ipv6_address ipv6;
} addr;
};
/* Description of the well known PPPoE header */
struct pppoe_header {
uint8_t version:4; /* Protocol version */
uint8_t type:4; /* Type */
uint8_t code; /* Packet type code */
uint16_t sid; /* Session Id */
uint16_t length; /* Payload size */
};
/* Description of the MPLS header */
struct mpls_header {
uint32_t label:20; /* Label value */
uint32_t exp:3; /* Experimental */
uint32_t s:1; /* Bottom of stack */
uint32_t ttl:8; /* Time to live */
};
/* Description of the IPv6 header */
struct ipv6_header {
uint32_t version:4; /* Version */
uint32_t tc:8; /* Traffic Class */
uint32_t flow_label:20; /* Label */
uint16_t payload_len; /* Payload size */
uint8_t next_hdr; /* Next protocol */
uint8_t hop_limit; /* Hop Limit */
union dpa_offload_ipv6_address ipsa; /* Source address */
union dpa_offload_ipv6_address ipda; /* Destination addr */
};
struct ipv4_header {
/* IPv4 header */
struct iphdr header;
/* IPv4 options buffer. NULL for no options. */
uint8_t *options;
/* Size of IPv4 options buffer. Zero for no options. */
uint8_t options_size;
};
/* Description of the VLAN header */
struct vlan_header {
uint16_t tpid;
uint16_t tci;
};
#endif /* __FSL_DPA_OFFLOAD_H */
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