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WSL2-Linux-Kernel/drivers/net/ethernet/intel/fm10k/fm10k_tlv.c

866 строки
24 KiB
C
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/* Intel(R) Ethernet Switch Host Interface Driver
* Copyright(c) 2013 - 2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*/
#include "fm10k_tlv.h"
/**
* fm10k_tlv_msg_init - Initialize message block for TLV data storage
* @msg: Pointer to message block
* @msg_id: Message ID indicating message type
*
* This function return success if provided with a valid message pointer
**/
s32 fm10k_tlv_msg_init(u32 *msg, u16 msg_id)
{
/* verify pointer is not NULL */
if (!msg)
return FM10K_ERR_PARAM;
*msg = (FM10K_TLV_FLAGS_MSG << FM10K_TLV_FLAGS_SHIFT) | msg_id;
return 0;
}
/**
* fm10k_tlv_attr_put_null_string - Place null terminated string on message
* @msg: Pointer to message block
* @attr_id: Attribute ID
* @string: Pointer to string to be stored in attribute
*
* This function will reorder a string to be CPU endian and store it in
* the attribute buffer. It will return success if provided with a valid
* pointers.
**/
static s32 fm10k_tlv_attr_put_null_string(u32 *msg, u16 attr_id,
const unsigned char *string)
{
u32 attr_data = 0, len = 0;
u32 *attr;
/* verify pointers are not NULL */
if (!string || !msg)
return FM10K_ERR_PARAM;
attr = &msg[FM10K_TLV_DWORD_LEN(*msg)];
/* copy string into local variable and then write to msg */
do {
/* write data to message */
if (len && !(len % 4)) {
attr[len / 4] = attr_data;
attr_data = 0;
}
/* record character to offset location */
attr_data |= (u32)(*string) << (8 * (len % 4));
len++;
/* test for NULL and then increment */
} while (*(string++));
/* write last piece of data to message */
attr[(len + 3) / 4] = attr_data;
/* record attribute header, update message length */
len <<= FM10K_TLV_LEN_SHIFT;
attr[0] = len | attr_id;
/* add header length to length */
len += FM10K_TLV_HDR_LEN << FM10K_TLV_LEN_SHIFT;
*msg += FM10K_TLV_LEN_ALIGN(len);
return 0;
}
/**
* fm10k_tlv_attr_get_null_string - Get null terminated string from attribute
* @attr: Pointer to attribute
* @string: Pointer to location of destination string
*
* This function pulls the string back out of the attribute and will place
* it in the array pointed by by string. It will return success if provided
* with a valid pointers.
**/
static s32 fm10k_tlv_attr_get_null_string(u32 *attr, unsigned char *string)
{
u32 len;
/* verify pointers are not NULL */
if (!string || !attr)
return FM10K_ERR_PARAM;
len = *attr >> FM10K_TLV_LEN_SHIFT;
attr++;
while (len--)
string[len] = (u8)(attr[len / 4] >> (8 * (len % 4)));
return 0;
}
/**
* fm10k_tlv_attr_put_mac_vlan - Store MAC/VLAN attribute in message
* @msg: Pointer to message block
* @attr_id: Attribute ID
* @mac_addr: MAC address to be stored
*
* This function will reorder a MAC address to be CPU endian and store it
* in the attribute buffer. It will return success if provided with a
* valid pointers.
**/
s32 fm10k_tlv_attr_put_mac_vlan(u32 *msg, u16 attr_id,
const u8 *mac_addr, u16 vlan)
{
u32 len = ETH_ALEN << FM10K_TLV_LEN_SHIFT;
u32 *attr;
/* verify pointers are not NULL */
if (!msg || !mac_addr)
return FM10K_ERR_PARAM;
attr = &msg[FM10K_TLV_DWORD_LEN(*msg)];
/* record attribute header, update message length */
attr[0] = len | attr_id;
/* copy value into local variable and then write to msg */
attr[1] = le32_to_cpu(*(const __le32 *)&mac_addr[0]);
attr[2] = le16_to_cpu(*(const __le16 *)&mac_addr[4]);
attr[2] |= (u32)vlan << 16;
/* add header length to length */
len += FM10K_TLV_HDR_LEN << FM10K_TLV_LEN_SHIFT;
*msg += FM10K_TLV_LEN_ALIGN(len);
return 0;
}
/**
* fm10k_tlv_attr_get_mac_vlan - Get MAC/VLAN stored in attribute
* @attr: Pointer to attribute
* @attr_id: Attribute ID
* @mac_addr: location of buffer to store MAC address
*
* This function pulls the MAC address back out of the attribute and will
* place it in the array pointed by by mac_addr. It will return success
* if provided with a valid pointers.
**/
s32 fm10k_tlv_attr_get_mac_vlan(u32 *attr, u8 *mac_addr, u16 *vlan)
{
/* verify pointers are not NULL */
if (!mac_addr || !attr)
return FM10K_ERR_PARAM;
*(__le32 *)&mac_addr[0] = cpu_to_le32(attr[1]);
*(__le16 *)&mac_addr[4] = cpu_to_le16((u16)(attr[2]));
*vlan = (u16)(attr[2] >> 16);
return 0;
}
/**
* fm10k_tlv_attr_put_bool - Add header indicating value "true"
* @msg: Pointer to message block
* @attr_id: Attribute ID
*
* This function will simply add an attribute header, the fact
* that the header is here means the attribute value is true, else
* it is false. The function will return success if provided with a
* valid pointers.
**/
s32 fm10k_tlv_attr_put_bool(u32 *msg, u16 attr_id)
{
/* verify pointers are not NULL */
if (!msg)
return FM10K_ERR_PARAM;
/* record attribute header */
msg[FM10K_TLV_DWORD_LEN(*msg)] = attr_id;
/* add header length to length */
*msg += FM10K_TLV_HDR_LEN << FM10K_TLV_LEN_SHIFT;
return 0;
}
/**
* fm10k_tlv_attr_put_value - Store integer value attribute in message
* @msg: Pointer to message block
* @attr_id: Attribute ID
* @value: Value to be written
* @len: Size of value
*
* This function will place an integer value of up to 8 bytes in size
* in a message attribute. The function will return success provided
* that msg is a valid pointer, and len is 1, 2, 4, or 8.
**/
s32 fm10k_tlv_attr_put_value(u32 *msg, u16 attr_id, s64 value, u32 len)
{
u32 *attr;
/* verify non-null msg and len is 1, 2, 4, or 8 */
if (!msg || !len || len > 8 || (len & (len - 1)))
return FM10K_ERR_PARAM;
attr = &msg[FM10K_TLV_DWORD_LEN(*msg)];
if (len < 4) {
attr[1] = (u32)value & (BIT(8 * len) - 1);
} else {
attr[1] = (u32)value;
if (len > 4)
attr[2] = (u32)(value >> 32);
}
/* record attribute header, update message length */
len <<= FM10K_TLV_LEN_SHIFT;
attr[0] = len | attr_id;
/* add header length to length */
len += FM10K_TLV_HDR_LEN << FM10K_TLV_LEN_SHIFT;
*msg += FM10K_TLV_LEN_ALIGN(len);
return 0;
}
/**
* fm10k_tlv_attr_get_value - Get integer value stored in attribute
* @attr: Pointer to attribute
* @value: Pointer to destination buffer
* @len: Size of value
*
* This function will place an integer value of up to 8 bytes in size
* in the offset pointed to by value. The function will return success
* provided that pointers are valid and the len value matches the
* attribute length.
**/
s32 fm10k_tlv_attr_get_value(u32 *attr, void *value, u32 len)
{
/* verify pointers are not NULL */
if (!attr || !value)
return FM10K_ERR_PARAM;
if ((*attr >> FM10K_TLV_LEN_SHIFT) != len)
return FM10K_ERR_PARAM;
if (len == 8)
*(u64 *)value = ((u64)attr[2] << 32) | attr[1];
else if (len == 4)
*(u32 *)value = attr[1];
else if (len == 2)
*(u16 *)value = (u16)attr[1];
else
*(u8 *)value = (u8)attr[1];
return 0;
}
/**
* fm10k_tlv_attr_put_le_struct - Store little endian structure in message
* @msg: Pointer to message block
* @attr_id: Attribute ID
* @le_struct: Pointer to structure to be written
* @len: Size of le_struct
*
* This function will place a little endian structure value in a message
* attribute. The function will return success provided that all pointers
* are valid and length is a non-zero multiple of 4.
**/
s32 fm10k_tlv_attr_put_le_struct(u32 *msg, u16 attr_id,
const void *le_struct, u32 len)
{
const __le32 *le32_ptr = (const __le32 *)le_struct;
u32 *attr;
u32 i;
/* verify non-null msg and len is in 32 bit words */
if (!msg || !len || (len % 4))
return FM10K_ERR_PARAM;
attr = &msg[FM10K_TLV_DWORD_LEN(*msg)];
/* copy le32 structure into host byte order at 32b boundaries */
for (i = 0; i < (len / 4); i++)
attr[i + 1] = le32_to_cpu(le32_ptr[i]);
/* record attribute header, update message length */
len <<= FM10K_TLV_LEN_SHIFT;
attr[0] = len | attr_id;
/* add header length to length */
len += FM10K_TLV_HDR_LEN << FM10K_TLV_LEN_SHIFT;
*msg += FM10K_TLV_LEN_ALIGN(len);
return 0;
}
/**
* fm10k_tlv_attr_get_le_struct - Get little endian struct form attribute
* @attr: Pointer to attribute
* @le_struct: Pointer to structure to be written
* @len: Size of structure
*
* This function will place a little endian structure in the buffer
* pointed to by le_struct. The function will return success
* provided that pointers are valid and the len value matches the
* attribute length.
**/
s32 fm10k_tlv_attr_get_le_struct(u32 *attr, void *le_struct, u32 len)
{
__le32 *le32_ptr = (__le32 *)le_struct;
u32 i;
/* verify pointers are not NULL */
if (!le_struct || !attr)
return FM10K_ERR_PARAM;
if ((*attr >> FM10K_TLV_LEN_SHIFT) != len)
return FM10K_ERR_PARAM;
attr++;
for (i = 0; len; i++, len -= 4)
le32_ptr[i] = cpu_to_le32(attr[i]);
return 0;
}
/**
* fm10k_tlv_attr_nest_start - Start a set of nested attributes
* @msg: Pointer to message block
* @attr_id: Attribute ID
*
* This function will mark off a new nested region for encapsulating
* a given set of attributes. The idea is if you wish to place a secondary
* structure within the message this mechanism allows for that. The
* function will return NULL on failure, and a pointer to the start
* of the nested attributes on success.
**/
static u32 *fm10k_tlv_attr_nest_start(u32 *msg, u16 attr_id)
{
u32 *attr;
/* verify pointer is not NULL */
if (!msg)
return NULL;
attr = &msg[FM10K_TLV_DWORD_LEN(*msg)];
attr[0] = attr_id;
/* return pointer to nest header */
return attr;
}
/**
* fm10k_tlv_attr_nest_stop - Stop a set of nested attributes
* @msg: Pointer to message block
*
* This function closes off an existing set of nested attributes. The
* message pointer should be pointing to the parent of the nest. So in
* the case of a nest within the nest this would be the outer nest pointer.
* This function will return success provided all pointers are valid.
**/
static s32 fm10k_tlv_attr_nest_stop(u32 *msg)
{
u32 *attr;
u32 len;
/* verify pointer is not NULL */
if (!msg)
return FM10K_ERR_PARAM;
/* locate the nested header and retrieve its length */
attr = &msg[FM10K_TLV_DWORD_LEN(*msg)];
len = (attr[0] >> FM10K_TLV_LEN_SHIFT) << FM10K_TLV_LEN_SHIFT;
/* only include nest if data was added to it */
if (len) {
len += FM10K_TLV_HDR_LEN << FM10K_TLV_LEN_SHIFT;
*msg += len;
}
return 0;
}
/**
* fm10k_tlv_attr_validate - Validate attribute metadata
* @attr: Pointer to attribute
* @tlv_attr: Type and length info for attribute
*
* This function does some basic validation of the input TLV. It
* verifies the length, and in the case of null terminated strings
* it verifies that the last byte is null. The function will
* return FM10K_ERR_PARAM if any attribute is malformed, otherwise
* it returns 0.
**/
static s32 fm10k_tlv_attr_validate(u32 *attr,
const struct fm10k_tlv_attr *tlv_attr)
{
u32 attr_id = *attr & FM10K_TLV_ID_MASK;
u16 len = *attr >> FM10K_TLV_LEN_SHIFT;
/* verify this is an attribute and not a message */
if (*attr & (FM10K_TLV_FLAGS_MSG << FM10K_TLV_FLAGS_SHIFT))
return FM10K_ERR_PARAM;
/* search through the list of attributes to find a matching ID */
while (tlv_attr->id < attr_id)
tlv_attr++;
/* if didn't find a match then we should exit */
if (tlv_attr->id != attr_id)
return FM10K_NOT_IMPLEMENTED;
/* move to start of attribute data */
attr++;
switch (tlv_attr->type) {
case FM10K_TLV_NULL_STRING:
if (!len ||
(attr[(len - 1) / 4] & (0xFF << (8 * ((len - 1) % 4)))))
return FM10K_ERR_PARAM;
if (len > tlv_attr->len)
return FM10K_ERR_PARAM;
break;
case FM10K_TLV_MAC_ADDR:
if (len != ETH_ALEN)
return FM10K_ERR_PARAM;
break;
case FM10K_TLV_BOOL:
if (len)
return FM10K_ERR_PARAM;
break;
case FM10K_TLV_UNSIGNED:
case FM10K_TLV_SIGNED:
if (len != tlv_attr->len)
return FM10K_ERR_PARAM;
break;
case FM10K_TLV_LE_STRUCT:
/* struct must be 4 byte aligned */
if ((len % 4) || len != tlv_attr->len)
return FM10K_ERR_PARAM;
break;
case FM10K_TLV_NESTED:
/* nested attributes must be 4 byte aligned */
if (len % 4)
return FM10K_ERR_PARAM;
break;
default:
/* attribute id is mapped to bad value */
return FM10K_ERR_PARAM;
}
return 0;
}
/**
* fm10k_tlv_attr_parse - Parses stream of attribute data
* @attr: Pointer to attribute list
* @results: Pointer array to store pointers to attributes
* @tlv_attr: Type and length info for attributes
*
* This function validates a stream of attributes and parses them
* up into an array of pointers stored in results. The function will
* return FM10K_ERR_PARAM on any input or message error,
* FM10K_NOT_IMPLEMENTED for any attribute that is outside of the array
* and 0 on success. Any attributes not found in tlv_attr will be silently
* ignored.
**/
static s32 fm10k_tlv_attr_parse(u32 *attr, u32 **results,
const struct fm10k_tlv_attr *tlv_attr)
{
u32 i, attr_id, offset = 0;
s32 err = 0;
u16 len;
/* verify pointers are not NULL */
if (!attr || !results)
return FM10K_ERR_PARAM;
/* initialize results to NULL */
for (i = 0; i < FM10K_TLV_RESULTS_MAX; i++)
results[i] = NULL;
/* pull length from the message header */
len = *attr >> FM10K_TLV_LEN_SHIFT;
/* no attributes to parse if there is no length */
if (!len)
return 0;
/* no attributes to parse, just raw data, message becomes attribute */
if (!tlv_attr) {
results[0] = attr;
return 0;
}
/* move to start of attribute data */
attr++;
/* run through list parsing all attributes */
while (offset < len) {
attr_id = *attr & FM10K_TLV_ID_MASK;
if (attr_id >= FM10K_TLV_RESULTS_MAX)
return FM10K_NOT_IMPLEMENTED;
err = fm10k_tlv_attr_validate(attr, tlv_attr);
if (err == FM10K_NOT_IMPLEMENTED)
; /* silently ignore non-implemented attributes */
else if (err)
return err;
else
results[attr_id] = attr;
/* update offset */
offset += FM10K_TLV_DWORD_LEN(*attr) * 4;
/* move to next attribute */
attr = &attr[FM10K_TLV_DWORD_LEN(*attr)];
}
/* we should find ourselves at the end of the list */
if (offset != len)
return FM10K_ERR_PARAM;
return 0;
}
/**
* fm10k_tlv_msg_parse - Parses message header and calls function handler
* @hw: Pointer to hardware structure
* @msg: Pointer to message
* @mbx: Pointer to mailbox information structure
* @func: Function array containing list of message handling functions
*
* This function should be the first function called upon receiving a
* message. The handler will identify the message type and call the correct
* handler for the given message. It will return the value from the function
* call on a recognized message type, otherwise it will return
* FM10K_NOT_IMPLEMENTED on an unrecognized type.
**/
s32 fm10k_tlv_msg_parse(struct fm10k_hw *hw, u32 *msg,
struct fm10k_mbx_info *mbx,
const struct fm10k_msg_data *data)
{
u32 *results[FM10K_TLV_RESULTS_MAX];
u32 msg_id;
s32 err;
/* verify pointer is not NULL */
if (!msg || !data)
return FM10K_ERR_PARAM;
/* verify this is a message and not an attribute */
if (!(*msg & (FM10K_TLV_FLAGS_MSG << FM10K_TLV_FLAGS_SHIFT)))
return FM10K_ERR_PARAM;
/* grab message ID */
msg_id = *msg & FM10K_TLV_ID_MASK;
while (data->id < msg_id)
data++;
/* if we didn't find it then pass it up as an error */
if (data->id != msg_id) {
while (data->id != FM10K_TLV_ERROR)
data++;
}
/* parse the attributes into the results list */
err = fm10k_tlv_attr_parse(msg, results, data->attr);
if (err < 0)
return err;
return data->func(hw, results, mbx);
}
/**
* fm10k_tlv_msg_error - Default handler for unrecognized TLV message IDs
* @hw: Pointer to hardware structure
* @results: Pointer array to message, results[0] is pointer to message
* @mbx: Unused mailbox pointer
*
* This function is a default handler for unrecognized messages. At a
* a minimum it just indicates that the message requested was
* unimplemented.
**/
s32 fm10k_tlv_msg_error(struct fm10k_hw *hw, u32 **results,
struct fm10k_mbx_info *mbx)
{
return FM10K_NOT_IMPLEMENTED;
}
static const unsigned char test_str[] = "fm10k";
static const unsigned char test_mac[ETH_ALEN] = { 0x12, 0x34, 0x56,
0x78, 0x9a, 0xbc };
static const u16 test_vlan = 0x0FED;
static const u64 test_u64 = 0xfedcba9876543210ull;
static const u32 test_u32 = 0x87654321;
static const u16 test_u16 = 0x8765;
static const u8 test_u8 = 0x87;
static const s64 test_s64 = -0x123456789abcdef0ll;
static const s32 test_s32 = -0x1235678;
static const s16 test_s16 = -0x1234;
static const s8 test_s8 = -0x12;
static const __le32 test_le[2] = { cpu_to_le32(0x12345678),
cpu_to_le32(0x9abcdef0)};
/* The message below is meant to be used as a test message to demonstrate
* how to use the TLV interface and to test the types. Normally this code
* be compiled out by stripping the code wrapped in FM10K_TLV_TEST_MSG
*/
const struct fm10k_tlv_attr fm10k_tlv_msg_test_attr[] = {
FM10K_TLV_ATTR_NULL_STRING(FM10K_TEST_MSG_STRING, 80),
FM10K_TLV_ATTR_MAC_ADDR(FM10K_TEST_MSG_MAC_ADDR),
FM10K_TLV_ATTR_U8(FM10K_TEST_MSG_U8),
FM10K_TLV_ATTR_U16(FM10K_TEST_MSG_U16),
FM10K_TLV_ATTR_U32(FM10K_TEST_MSG_U32),
FM10K_TLV_ATTR_U64(FM10K_TEST_MSG_U64),
FM10K_TLV_ATTR_S8(FM10K_TEST_MSG_S8),
FM10K_TLV_ATTR_S16(FM10K_TEST_MSG_S16),
FM10K_TLV_ATTR_S32(FM10K_TEST_MSG_S32),
FM10K_TLV_ATTR_S64(FM10K_TEST_MSG_S64),
FM10K_TLV_ATTR_LE_STRUCT(FM10K_TEST_MSG_LE_STRUCT, 8),
FM10K_TLV_ATTR_NESTED(FM10K_TEST_MSG_NESTED),
FM10K_TLV_ATTR_S32(FM10K_TEST_MSG_RESULT),
FM10K_TLV_ATTR_LAST
};
/**
* fm10k_tlv_msg_test_generate_data - Stuff message with data
* @msg: Pointer to message
* @attr_flags: List of flags indicating what attributes to add
*
* This function is meant to load a message buffer with attribute data
**/
static void fm10k_tlv_msg_test_generate_data(u32 *msg, u32 attr_flags)
{
if (attr_flags & BIT(FM10K_TEST_MSG_STRING))
fm10k_tlv_attr_put_null_string(msg, FM10K_TEST_MSG_STRING,
test_str);
if (attr_flags & BIT(FM10K_TEST_MSG_MAC_ADDR))
fm10k_tlv_attr_put_mac_vlan(msg, FM10K_TEST_MSG_MAC_ADDR,
test_mac, test_vlan);
if (attr_flags & BIT(FM10K_TEST_MSG_U8))
fm10k_tlv_attr_put_u8(msg, FM10K_TEST_MSG_U8, test_u8);
if (attr_flags & BIT(FM10K_TEST_MSG_U16))
fm10k_tlv_attr_put_u16(msg, FM10K_TEST_MSG_U16, test_u16);
if (attr_flags & BIT(FM10K_TEST_MSG_U32))
fm10k_tlv_attr_put_u32(msg, FM10K_TEST_MSG_U32, test_u32);
if (attr_flags & BIT(FM10K_TEST_MSG_U64))
fm10k_tlv_attr_put_u64(msg, FM10K_TEST_MSG_U64, test_u64);
if (attr_flags & BIT(FM10K_TEST_MSG_S8))
fm10k_tlv_attr_put_s8(msg, FM10K_TEST_MSG_S8, test_s8);
if (attr_flags & BIT(FM10K_TEST_MSG_S16))
fm10k_tlv_attr_put_s16(msg, FM10K_TEST_MSG_S16, test_s16);
if (attr_flags & BIT(FM10K_TEST_MSG_S32))
fm10k_tlv_attr_put_s32(msg, FM10K_TEST_MSG_S32, test_s32);
if (attr_flags & BIT(FM10K_TEST_MSG_S64))
fm10k_tlv_attr_put_s64(msg, FM10K_TEST_MSG_S64, test_s64);
if (attr_flags & BIT(FM10K_TEST_MSG_LE_STRUCT))
fm10k_tlv_attr_put_le_struct(msg, FM10K_TEST_MSG_LE_STRUCT,
test_le, 8);
}
/**
* fm10k_tlv_msg_test_create - Create a test message testing all attributes
* @msg: Pointer to message
* @attr_flags: List of flags indicating what attributes to add
*
* This function is meant to load a message buffer with all attribute types
* including a nested attribute.
**/
void fm10k_tlv_msg_test_create(u32 *msg, u32 attr_flags)
{
u32 *nest = NULL;
fm10k_tlv_msg_init(msg, FM10K_TLV_MSG_ID_TEST);
fm10k_tlv_msg_test_generate_data(msg, attr_flags);
/* check for nested attributes */
attr_flags >>= FM10K_TEST_MSG_NESTED;
if (attr_flags) {
nest = fm10k_tlv_attr_nest_start(msg, FM10K_TEST_MSG_NESTED);
fm10k_tlv_msg_test_generate_data(nest, attr_flags);
fm10k_tlv_attr_nest_stop(msg);
}
}
/**
* fm10k_tlv_msg_test - Validate all results on test message receive
* @hw: Pointer to hardware structure
* @results: Pointer array to attributes in the message
* @mbx: Pointer to mailbox information structure
*
* This function does a check to verify all attributes match what the test
* message placed in the message buffer. It is the default handler
* for TLV test messages.
**/
s32 fm10k_tlv_msg_test(struct fm10k_hw *hw, u32 **results,
struct fm10k_mbx_info *mbx)
{
u32 *nest_results[FM10K_TLV_RESULTS_MAX];
unsigned char result_str[80];
unsigned char result_mac[ETH_ALEN];
s32 err = 0;
__le32 result_le[2];
u16 result_vlan;
u64 result_u64;
u32 result_u32;
u16 result_u16;
u8 result_u8;
s64 result_s64;
s32 result_s32;
s16 result_s16;
s8 result_s8;
u32 reply[3];
/* retrieve results of a previous test */
if (!!results[FM10K_TEST_MSG_RESULT])
return fm10k_tlv_attr_get_s32(results[FM10K_TEST_MSG_RESULT],
&mbx->test_result);
parse_nested:
if (!!results[FM10K_TEST_MSG_STRING]) {
err = fm10k_tlv_attr_get_null_string(
results[FM10K_TEST_MSG_STRING],
result_str);
if (!err && memcmp(test_str, result_str, sizeof(test_str)))
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_MAC_ADDR]) {
err = fm10k_tlv_attr_get_mac_vlan(
results[FM10K_TEST_MSG_MAC_ADDR],
result_mac, &result_vlan);
if (!err && !ether_addr_equal(test_mac, result_mac))
err = FM10K_ERR_INVALID_VALUE;
if (!err && test_vlan != result_vlan)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_U8]) {
err = fm10k_tlv_attr_get_u8(results[FM10K_TEST_MSG_U8],
&result_u8);
if (!err && test_u8 != result_u8)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_U16]) {
err = fm10k_tlv_attr_get_u16(results[FM10K_TEST_MSG_U16],
&result_u16);
if (!err && test_u16 != result_u16)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_U32]) {
err = fm10k_tlv_attr_get_u32(results[FM10K_TEST_MSG_U32],
&result_u32);
if (!err && test_u32 != result_u32)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_U64]) {
err = fm10k_tlv_attr_get_u64(results[FM10K_TEST_MSG_U64],
&result_u64);
if (!err && test_u64 != result_u64)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_S8]) {
err = fm10k_tlv_attr_get_s8(results[FM10K_TEST_MSG_S8],
&result_s8);
if (!err && test_s8 != result_s8)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_S16]) {
err = fm10k_tlv_attr_get_s16(results[FM10K_TEST_MSG_S16],
&result_s16);
if (!err && test_s16 != result_s16)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_S32]) {
err = fm10k_tlv_attr_get_s32(results[FM10K_TEST_MSG_S32],
&result_s32);
if (!err && test_s32 != result_s32)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_S64]) {
err = fm10k_tlv_attr_get_s64(results[FM10K_TEST_MSG_S64],
&result_s64);
if (!err && test_s64 != result_s64)
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_LE_STRUCT]) {
err = fm10k_tlv_attr_get_le_struct(
results[FM10K_TEST_MSG_LE_STRUCT],
result_le,
sizeof(result_le));
if (!err && memcmp(test_le, result_le, sizeof(test_le)))
err = FM10K_ERR_INVALID_VALUE;
if (err)
goto report_result;
}
if (!!results[FM10K_TEST_MSG_NESTED]) {
/* clear any pointers */
memset(nest_results, 0, sizeof(nest_results));
/* parse the nested attributes into the nest results list */
err = fm10k_tlv_attr_parse(results[FM10K_TEST_MSG_NESTED],
nest_results,
fm10k_tlv_msg_test_attr);
if (err)
goto report_result;
/* loop back through to the start */
results = nest_results;
goto parse_nested;
}
report_result:
/* generate reply with test result */
fm10k_tlv_msg_init(reply, FM10K_TLV_MSG_ID_TEST);
fm10k_tlv_attr_put_s32(reply, FM10K_TEST_MSG_RESULT, err);
/* load onto outgoing mailbox */
return mbx->ops.enqueue_tx(hw, mbx, reply);
}
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