void __wmi_control_rx(struct wmi_unified *wmi_handle, wmi_buf_t evt_buf)
{
u_int32_t id;
u_int8_t *data;
u_int32_t len;
void *wmi_cmd_struct_ptr = NULL;
int tlv_ok_status = 0;
id = WMI_GET_FIELD(adf_nbuf_data(evt_buf), WMI_CMD_HDR, COMMANDID);
if (adf_nbuf_pull_head(evt_buf, sizeof(WMI_CMD_HDR)) == NULL)
goto end;
data = adf_nbuf_data(evt_buf);
len = adf_nbuf_len(evt_buf);
/* Validate and pad(if necessary) the TLVs */
tlv_ok_status = wmitlv_check_and_pad_event_tlvs(wmi_handle->scn_handle,
data, len, id,
&wmi_cmd_struct_ptr);
if (tlv_ok_status != 0) {
pr_err("%s: Error: id=0x%d, wmitlv_check_and_pad_tlvs ret=%d\n",
__func__, id, tlv_ok_status);
goto end;
}
#ifdef FEATURE_WLAN_D0WOW
if (wmi_get_d0wow_flag(wmi_handle))
pr_debug("%s: WMI event ID is 0x%x\n", __func__, id);
#endif
if (id >= WMI_EVT_GRP_START_ID(WMI_GRP_START)) {
u_int32_t idx = 0;
idx = wmi_unified_get_event_handler_ix(wmi_handle, id) ;
if (idx == -1) {
pr_err("%s : event handler is not registered: event id 0x%x\n",
__func__, id);
goto end;
}
#ifdef WMI_INTERFACE_EVENT_LOGGING
adf_os_spin_lock_bh(&wmi_handle->wmi_record_lock);
/* Exclude 4 bytes of TLV header */
WMI_EVENT_RECORD(id, ((u_int8_t *)data + 4));
adf_os_spin_unlock_bh(&wmi_handle->wmi_record_lock);
#endif
/* Call the WMI registered event handler */
wmi_handle->event_handler[idx](wmi_handle->scn_handle,
wmi_cmd_struct_ptr, len);
goto end;
}
switch (id) {
default:
pr_info("%s: Unhandled WMI event %d\n", __func__, id);
break;
case WMI_SERVICE_READY_EVENTID:
pr_info("%s: WMI UNIFIED SERVICE READY event\n", __func__);
wma_rx_service_ready_event(wmi_handle->scn_handle,
wmi_cmd_struct_ptr);
break;
case WMI_READY_EVENTID:
pr_info("%s: WMI UNIFIED READY event\n", __func__);
wma_rx_ready_event(wmi_handle->scn_handle, wmi_cmd_struct_ptr);
break;
}
end:
wmitlv_free_allocated_event_tlvs(id, &wmi_cmd_struct_ptr);
adf_nbuf_free(evt_buf);
}
void __wmi_control_rx(struct wmi_unified *wmi_handle, wmi_buf_t evt_buf)
{
uint32_t id;
uint8_t *data;
uint32_t len;
void *wmi_cmd_struct_ptr = NULL;
int tlv_ok_status = 0;
id = WMI_GET_FIELD(cdf_nbuf_data(evt_buf), WMI_CMD_HDR, COMMANDID);
if (cdf_nbuf_pull_head(evt_buf, sizeof(WMI_CMD_HDR)) == NULL)
goto end;
data = cdf_nbuf_data(evt_buf);
len = cdf_nbuf_len(evt_buf);
/* Validate and pad(if necessary) the TLVs */
tlv_ok_status = wmitlv_check_and_pad_event_tlvs(wmi_handle->scn_handle,
data, len, id,
&wmi_cmd_struct_ptr);
if (tlv_ok_status != 0) {
pr_err("%s: Error: id=0x%d, wmitlv_check_and_pad_tlvs ret=%d\n",
__func__, id, tlv_ok_status);
goto end;
}
if ((id >= WMI_EVT_GRP_START_ID(WMI_GRP_START)) &&
/* WMI_SERVICE_READY_EXT_EVENTID is supposed to be part of the
* WMI_GRP_START group. Since the group is out of space, FW
* has accomodated this in WMI_GRP_VDEV.
* WMI_SERVICE_READY_EXT_EVENTID does not have any specific
* event handler registered. So, we do not want to go through
* the WMI registered event handler path for this event.
*/
(id != WMI_SERVICE_READY_EXT_EVENTID)) {
uint32_t idx = 0;
idx = wmi_unified_get_event_handler_ix(wmi_handle, id);
if (idx == -1) {
pr_err
("%s : event handler is not registered: event id 0x%x\n",
__func__, id);
goto end;
}
#ifdef WMI_INTERFACE_EVENT_LOGGING
cdf_spin_lock_bh(&wmi_handle->wmi_record_lock);
/* Exclude 4 bytes of TLV header */
if (id == WMI_MGMT_TX_COMPLETION_EVENTID) {
WMI_MGMT_EVENT_RECORD(id, ((uint8_t *) data + 4));
} else {
WMI_EVENT_RECORD(id, ((uint8_t *) data + 4));
}
cdf_spin_unlock_bh(&wmi_handle->wmi_record_lock);
#endif
/* Call the WMI registered event handler */
wmi_handle->event_handler[idx] (wmi_handle->scn_handle,
wmi_cmd_struct_ptr, len);
goto end;
}
switch (id) {
default:
pr_info("%s: Unhandled WMI event %d\n", __func__, id);
break;
case WMI_SERVICE_READY_EVENTID:
pr_info("%s: WMI UNIFIED SERVICE READY event\n", __func__);
wma_rx_service_ready_event(wmi_handle->scn_handle,
wmi_cmd_struct_ptr);
break;
case WMI_SERVICE_READY_EXT_EVENTID:
WMA_LOGA("%s: WMI UNIFIED SERVICE READY Extended event",
__func__);
wma_rx_service_ready_ext_event(wmi_handle->scn_handle,
wmi_cmd_struct_ptr);
break;
case WMI_READY_EVENTID:
pr_info("%s: WMI UNIFIED READY event\n", __func__);
wma_rx_ready_event(wmi_handle->scn_handle, wmi_cmd_struct_ptr);
break;
}
end:
wmitlv_free_allocated_event_tlvs(id, &wmi_cmd_struct_ptr);
cdf_nbuf_free(evt_buf);
}
/*
* Temporarily added to support older WMI events. We should move all events to unified
* when the target is ready to support it.
*/
void wmi_control_rx(void *ctx, HTC_PACKET *htc_packet)
{
struct wmi_unified *wmi_handle = (struct wmi_unified *)ctx;
wmi_buf_t evt_buf;
u_int32_t len;
void *wmi_cmd_struct_ptr = NULL;
u_int32_t idx = 0;
int tlv_ok_status = 0;
#if defined(WMI_INTERFACE_EVENT_LOGGING) || !defined(QCA_CONFIG_SMP)
u_int32_t id;
u_int8_t *data;
#endif
evt_buf = (wmi_buf_t) htc_packet->pPktContext;
id = WMI_GET_FIELD(adf_nbuf_data(evt_buf), WMI_CMD_HDR, COMMANDID);
/* TX_PAUSE EVENT should be handled with tasklet context */
if ((WMI_TX_PAUSE_EVENTID == id) ||
(WMI_WOW_WAKEUP_HOST_EVENTID == id)) {
if (adf_nbuf_pull_head(evt_buf, sizeof(WMI_CMD_HDR)) == NULL)
return;
data = adf_nbuf_data(evt_buf);
len = adf_nbuf_len(evt_buf);
tlv_ok_status = wmitlv_check_and_pad_event_tlvs(
wmi_handle->scn_handle,
data, len, id,
&wmi_cmd_struct_ptr);
if (tlv_ok_status != 0) {
if (tlv_ok_status == 1) {
wmi_cmd_struct_ptr = data;
} else {
return;
}
}
idx = wmi_unified_get_event_handler_ix(wmi_handle, id);
if (idx == -1) {
wmitlv_free_allocated_event_tlvs(id,
&wmi_cmd_struct_ptr);
adf_nbuf_free(evt_buf);
return;
}
wmi_handle->event_handler[idx](wmi_handle->scn_handle,
wmi_cmd_struct_ptr, len);
wmitlv_free_allocated_event_tlvs(id, &wmi_cmd_struct_ptr);
adf_nbuf_free(evt_buf);
return;
}
#ifdef WMI_INTERFACE_EVENT_LOGGING
id = WMI_GET_FIELD(adf_nbuf_data(evt_buf), WMI_CMD_HDR, COMMANDID);
data = adf_nbuf_data(evt_buf);
adf_os_spin_lock_bh(&wmi_handle->wmi_record_lock);
/* Exclude 4 bytes of TLV header */
WMI_RX_EVENT_RECORD(id, ((u_int8_t *)data + 4));
adf_os_spin_unlock_bh(&wmi_handle->wmi_record_lock);
#endif
adf_os_spin_lock_bh(&wmi_handle->eventq_lock);
adf_nbuf_queue_add(&wmi_handle->event_queue, evt_buf);
adf_os_spin_unlock_bh(&wmi_handle->eventq_lock);
schedule_work(&wmi_handle->rx_event_work);
}
/*
* Helper Function to vaidate the TLV's coming for an event/command and also pads data to TLV's if necessary
* Return 0 if success.
<0 if failure.
*/
static int
wmitlv_check_and_pad_tlvs(void *os_handle, void *param_struc_ptr,
A_UINT32 param_buf_len, A_UINT32 is_cmd_id,
A_UINT32 wmi_cmd_event_id, void **wmi_cmd_struct_ptr)
{
wmitlv_attributes_struc attr_struct_ptr;
A_UINT32 buf_idx = 0;
A_UINT32 tlv_index = 0;
A_UINT32 num_of_elems = 0;
int tlv_size_diff = 0;
A_UINT8 *buf_ptr = (unsigned char *)param_struc_ptr;
wmitlv_cmd_param_info *cmd_param_tlvs_ptr = NULL;
A_UINT32 remaining_expected_tlvs = 0xFFFFFFFF;
A_UINT32 len_wmi_cmd_struct_buf;
/* Get the number of TLVs for this command/event */
if (wmitlv_get_attributes
(is_cmd_id, wmi_cmd_event_id, WMITLV_GET_ATTRIB_NUM_TLVS,
&attr_struct_ptr) != 0) {
wmi_tlv_print_error
("%s: ERROR: Couldn't get expected number of TLVs for Cmd=%d\n",
__func__, wmi_cmd_event_id);
return -1;
}
/* NOTE: the returned number of TLVs is in "attr_struct_ptr.cmd_num_tlv" */
/* Create base structure of format wmi_cmd_event_id##_param_tlvs */
len_wmi_cmd_struct_buf =
attr_struct_ptr.cmd_num_tlv * sizeof(wmitlv_cmd_param_info);
#ifndef NO_DYNAMIC_MEM_ALLOC
/* Dynamic memory allocation supported */
wmi_tlv_os_mem_alloc(os_handle, *wmi_cmd_struct_ptr,
len_wmi_cmd_struct_buf);
#else
/* Dynamic memory allocation is not supported. Use the buffer g_wmi_static_cmd_param_info_buf, which should be set using wmi_tlv_set_static_param_tlv_buf(),
for base structure of format wmi_cmd_event_id##_param_tlvs */
*wmi_cmd_struct_ptr = g_wmi_static_cmd_param_info_buf;
if (attr_struct_ptr.cmd_num_tlv > g_wmi_static_max_cmd_param_tlvs) {
/* Error: Expecting more TLVs that accomodated for static structure */
wmi_tlv_print_error
("%s: Error: Expecting more TLVs that accomodated for static structure. Expected:%d Accomodated:%d\n",
__func__, attr_struct_ptr.cmd_num_tlv,
g_wmi_static_max_cmd_param_tlvs);
return -1;
}
#endif
if (*wmi_cmd_struct_ptr == NULL) {
/* Error: unable to alloc memory */
wmi_tlv_print_error
("%s: Error: unable to alloc memory (size=%d) for TLV\n",
__func__, len_wmi_cmd_struct_buf);
return -1;
}
cmd_param_tlvs_ptr = (wmitlv_cmd_param_info *) *wmi_cmd_struct_ptr;
wmi_tlv_OS_MEMZERO(cmd_param_tlvs_ptr, len_wmi_cmd_struct_buf);
remaining_expected_tlvs = attr_struct_ptr.cmd_num_tlv;
while (((buf_idx + WMI_TLV_HDR_SIZE) <= param_buf_len)
&& (remaining_expected_tlvs)) {
A_UINT32 curr_tlv_tag =
WMITLV_GET_TLVTAG(WMITLV_GET_HDR(buf_ptr));
A_UINT32 curr_tlv_len =
WMITLV_GET_TLVLEN(WMITLV_GET_HDR(buf_ptr));
int num_padding_bytes = 0;
/* Get the attributes of the TLV with the given order in "tlv_index" */
wmi_tlv_OS_MEMZERO(&attr_struct_ptr,
sizeof(wmitlv_attributes_struc));
if (wmitlv_get_attributes
(is_cmd_id, wmi_cmd_event_id, tlv_index,
&attr_struct_ptr) != 0) {
wmi_tlv_print_error
("%s: ERROR: No TLV attributes found for Cmd=%d Tag_order=%d\n",
__func__, wmi_cmd_event_id, tlv_index);
goto Error_wmitlv_check_and_pad_tlvs;
}
/* Found the TLV that we wanted */
wmi_tlv_print_verbose("%s: [tlv %d]: tag=%d, len=%d\n",
__func__, tlv_index, curr_tlv_tag,
curr_tlv_len);
/* Validating Tag order */
if (curr_tlv_tag != attr_struct_ptr.tag_id) {
wmi_tlv_print_error
("%s: ERROR: TLV has wrong tag in order for Cmd=0x%x. Given=%d, Expected=%d.\n",
__func__, wmi_cmd_event_id, curr_tlv_tag,
attr_struct_ptr.tag_id);
goto Error_wmitlv_check_and_pad_tlvs;
}
if ((curr_tlv_tag >= WMITLV_TAG_FIRST_ARRAY_ENUM)
&& (curr_tlv_tag <= WMITLV_TAG_LAST_ARRAY_ENUM)) {
/* Current Tag is an array of some kind. */
/* Skip the TLV header of this array */
buf_ptr += WMI_TLV_HDR_SIZE;
buf_idx += WMI_TLV_HDR_SIZE;
} else {
/* Non-array TLV. */
curr_tlv_len += WMI_TLV_HDR_SIZE;
}
if (attr_struct_ptr.tag_varied_size == WMITLV_SIZE_FIX) {
/* This TLV is fixed length */
if (WMITLV_ARR_SIZE_INVALID ==
attr_struct_ptr.tag_array_size) {
tlv_size_diff =
curr_tlv_len -
attr_struct_ptr.tag_struct_size;
num_of_elems =
(curr_tlv_len > WMI_TLV_HDR_SIZE) ? 1 : 0;
} else {
tlv_size_diff =
curr_tlv_len -
(attr_struct_ptr.tag_struct_size *
attr_struct_ptr.tag_array_size);
num_of_elems = attr_struct_ptr.tag_array_size;
}
} else {
/* This TLV has a variable number of elements */
if (WMITLV_TAG_ARRAY_STRUC == attr_struct_ptr.tag_id) {
A_UINT32 in_tlv_len = 0;
if (curr_tlv_len != 0) {
in_tlv_len =
WMITLV_GET_TLVLEN(WMITLV_GET_HDR
(buf_ptr));
in_tlv_len += WMI_TLV_HDR_SIZE;
tlv_size_diff =
in_tlv_len -
attr_struct_ptr.tag_struct_size;
num_of_elems =
curr_tlv_len / in_tlv_len;
wmi_tlv_print_verbose
("%s: WARN: TLV array of structures in_tlv_len=%d struct_size:%d diff:%d num_of_elems=%d \n",
__func__, in_tlv_len,
attr_struct_ptr.tag_struct_size,
tlv_size_diff, num_of_elems);
} else {
tlv_size_diff = 0;
num_of_elems = 0;
}
} else if ((WMITLV_TAG_ARRAY_UINT32 ==
attr_struct_ptr.tag_id)
|| (WMITLV_TAG_ARRAY_BYTE ==
attr_struct_ptr.tag_id)
|| (WMITLV_TAG_ARRAY_FIXED_STRUC ==
attr_struct_ptr.tag_id)) {
tlv_size_diff = 0;
num_of_elems =
curr_tlv_len /
attr_struct_ptr.tag_struct_size;
} else {
wmi_tlv_print_error
("%s ERROR Need to handle this tag ID for variable length %d\n",
__func__, attr_struct_ptr.tag_id);
goto Error_wmitlv_check_and_pad_tlvs;
}
}
if ((WMITLV_TAG_ARRAY_STRUC == attr_struct_ptr.tag_id) &&
(tlv_size_diff != 0)) {
void *new_tlv_buf = NULL;
A_UINT8 *tlv_buf_ptr = NULL;
A_UINT32 in_tlv_len;
A_UINT32 i;
if (attr_struct_ptr.tag_varied_size == WMITLV_SIZE_FIX) {
/* This is not allowed. The tag WMITLV_TAG_ARRAY_STRUC can only be used with variable-length structure array
should not have a fixed number of elements (contradicting). Use WMITLV_TAG_ARRAY_FIXED_STRUC tag for
fixed size structure array(where structure never change without breaking compatibility) */
wmi_tlv_print_error
("%s: ERROR: TLV (tag=%d) should be variable-length and not fixed length\n",
__func__, curr_tlv_tag);
goto Error_wmitlv_check_and_pad_tlvs;
}
/* Warning: Needs to allocate a larger structure and pad with zeros */
wmi_tlv_print_error
("%s: WARN: TLV array of structures needs padding. tlv_size_diff=%d\n",
__func__, tlv_size_diff);
/* incoming structure length */
in_tlv_len =
WMITLV_GET_TLVLEN(WMITLV_GET_HDR(buf_ptr)) +
WMI_TLV_HDR_SIZE;
#ifndef NO_DYNAMIC_MEM_ALLOC
wmi_tlv_os_mem_alloc(os_handle, new_tlv_buf,
(num_of_elems *
attr_struct_ptr.tag_struct_size));
if (new_tlv_buf == NULL) {
/* Error: unable to alloc memory */
wmi_tlv_print_error
("%s: Error: unable to alloc memory (size=%d) for padding the TLV array %d\n",
__func__,
(num_of_elems *
attr_struct_ptr.tag_struct_size),
curr_tlv_tag);
goto Error_wmitlv_check_and_pad_tlvs;
}
wmi_tlv_OS_MEMZERO(new_tlv_buf,
(num_of_elems *
attr_struct_ptr.tag_struct_size));
tlv_buf_ptr = (A_UINT8 *) new_tlv_buf;
for (i = 0; i < num_of_elems; i++) {
if (tlv_size_diff > 0) {
/* Incoming structure size is greater than expected structure size.
so copy the number of bytes equal to expected structure size */
wmi_tlv_OS_MEMCPY(tlv_buf_ptr,
(void *)(buf_ptr +
i *
in_tlv_len),
attr_struct_ptr.
tag_struct_size);
} else {
/* Incoming structure size is smaller than expected structure size.
so copy the number of bytes equal to incoming structure size
(other bytes would be zeroes) */
wmi_tlv_OS_MEMCPY(tlv_buf_ptr,
(void *)(buf_ptr +
i *
in_tlv_len),
in_tlv_len);
}
tlv_buf_ptr += attr_struct_ptr.tag_struct_size;
}
#else
{
A_UINT8 *src_addr;
A_UINT8 *dst_addr;
A_UINT32 buf_mov_len;
if (tlv_size_diff < 0) {
/* Incoming structure size is smaller than expected size then this needs padding for each element in the array */
/* Find amount of bytes to be padded for one element */
num_padding_bytes = tlv_size_diff * -1;
/* Move subsequent TLVs by number of bytes to be padded for all elements */
if (param_buf_len >
(buf_idx + curr_tlv_len)) {
src_addr =
buf_ptr + curr_tlv_len;
dst_addr =
buf_ptr + curr_tlv_len +
(num_padding_bytes *
num_of_elems);
buf_mov_len =
param_buf_len - (buf_idx +
curr_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr,
src_addr,
buf_mov_len);
}
/* Move subsequent elements of array down by number of bytes to be padded for one element and alse set padding bytes to zero */
tlv_buf_ptr = buf_ptr;
for (i = 0; i < num_of_elems; i++) {
src_addr =
tlv_buf_ptr + in_tlv_len;
if (i != (num_of_elems - 1)) {
/* Need not move anything for last element in the array */
dst_addr =
tlv_buf_ptr +
in_tlv_len +
num_padding_bytes;
buf_mov_len =
curr_tlv_len -
((i +
1) * in_tlv_len);
wmi_tlv_OS_MEMMOVE
(dst_addr, src_addr,
buf_mov_len);
}
/* Set the padding bytes to zeroes */
wmi_tlv_OS_MEMZERO(src_addr,
num_padding_bytes);
tlv_buf_ptr +=
attr_struct_ptr.
tag_struct_size;
}
/* Update the number of padding bytes to total number of bytes padded for all elements in the array */
num_padding_bytes =
num_padding_bytes * num_of_elems;
new_tlv_buf = buf_ptr;
} else {
/* Incoming structure size is greater than expected size then this needs shrinking for each element in the array */
/* Find amount of bytes to be shrinked for one element */
num_padding_bytes = tlv_size_diff * -1;
/* Move subsequent elements of array up by number of bytes to be shrinked for one element */
tlv_buf_ptr = buf_ptr;
for (i = 0; i < (num_of_elems - 1); i++) {
src_addr =
tlv_buf_ptr + in_tlv_len;
dst_addr =
tlv_buf_ptr + in_tlv_len +
num_padding_bytes;
buf_mov_len =
curr_tlv_len -
((i + 1) * in_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr,
src_addr,
buf_mov_len);
tlv_buf_ptr +=
attr_struct_ptr.
tag_struct_size;
}
/* Move subsequent TLVs by number of bytes to be shrinked for all elements */
if (param_buf_len >
(buf_idx + curr_tlv_len)) {
src_addr =
buf_ptr + curr_tlv_len;
dst_addr =
buf_ptr + curr_tlv_len +
(num_padding_bytes *
num_of_elems);
buf_mov_len =
param_buf_len - (buf_idx +
curr_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr,
src_addr,
buf_mov_len);
}
/* Update the number of padding bytes to total number of bytes shrinked for all elements in the array */
num_padding_bytes =
num_padding_bytes * num_of_elems;
new_tlv_buf = buf_ptr;
}
}
#endif
cmd_param_tlvs_ptr[tlv_index].tlv_ptr = new_tlv_buf;
cmd_param_tlvs_ptr[tlv_index].num_elements =
num_of_elems;
cmd_param_tlvs_ptr[tlv_index].buf_is_allocated = 1; /* Indicates that buffer is allocated */
} else if (tlv_size_diff >= 0) {
/* Warning: some parameter truncation */
if (tlv_size_diff > 0) {
wmi_tlv_print_verbose
("%s: WARN: TLV truncated. tlv_size_diff=%d, curr_tlv_len=%d\n",
__func__, tlv_size_diff, curr_tlv_len);
}
/* TODO: this next line needs more comments and explanation */
cmd_param_tlvs_ptr[tlv_index].tlv_ptr =
(attr_struct_ptr.tag_varied_size
&& !curr_tlv_len) ? NULL : (void *)buf_ptr;
cmd_param_tlvs_ptr[tlv_index].num_elements =
num_of_elems;
cmd_param_tlvs_ptr[tlv_index].buf_is_allocated = 0; /* Indicates that buffer is not allocated */
} else {
void *new_tlv_buf = NULL;
/* Warning: Needs to allocate a larger structure and pad with zeros */
wmi_tlv_print_verbose
("%s: WARN: TLV needs padding. tlv_size_diff=%d\n",
__func__, tlv_size_diff);
#ifndef NO_DYNAMIC_MEM_ALLOC
/* Dynamic memory allocation is supported */
wmi_tlv_os_mem_alloc(os_handle, new_tlv_buf,
(curr_tlv_len - tlv_size_diff));
if (new_tlv_buf == NULL) {
/* Error: unable to alloc memory */
wmi_tlv_print_error
("%s: Error: unable to alloc memory (size=%d) for padding the TLV %d\n",
__func__, (curr_tlv_len - tlv_size_diff),
curr_tlv_tag);
goto Error_wmitlv_check_and_pad_tlvs;
}
wmi_tlv_OS_MEMZERO(new_tlv_buf,
(curr_tlv_len - tlv_size_diff));
wmi_tlv_OS_MEMCPY(new_tlv_buf, (void *)buf_ptr,
curr_tlv_len);
#else
/* Dynamic memory allocation is not supported. Padding has to be done with in the existing buffer assuming we have enough space
to grow */
{
/* Note: tlv_size_diff is a value less than zero */
/* Move the Subsequent TLVs by amount of bytes needs to be padded */
A_UINT8 *src_addr;
A_UINT8 *dst_addr;
A_UINT32 src_len;
num_padding_bytes = (tlv_size_diff * -1);
src_addr = buf_ptr + curr_tlv_len;
dst_addr =
buf_ptr + curr_tlv_len + num_padding_bytes;
src_len =
param_buf_len - (buf_idx + curr_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr, src_addr, src_len);
/* Set the padding bytes to zeroes */
wmi_tlv_OS_MEMZERO(src_addr, num_padding_bytes);
new_tlv_buf = buf_ptr;
}
#endif
cmd_param_tlvs_ptr[tlv_index].tlv_ptr = new_tlv_buf;
cmd_param_tlvs_ptr[tlv_index].num_elements =
num_of_elems;
cmd_param_tlvs_ptr[tlv_index].buf_is_allocated = 1; /* Indicates that buffer is allocated */
}
tlv_index++;
remaining_expected_tlvs--;
buf_ptr += curr_tlv_len + num_padding_bytes;
buf_idx += curr_tlv_len + num_padding_bytes;
}
return (0);
Error_wmitlv_check_and_pad_tlvs:
if (is_cmd_id) {
wmitlv_free_allocated_command_tlvs(wmi_cmd_event_id,
wmi_cmd_struct_ptr);
} else {
wmitlv_free_allocated_event_tlvs(wmi_cmd_event_id,
wmi_cmd_struct_ptr);
}
*wmi_cmd_struct_ptr = NULL;
return (-1);
}
