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qcacmn: Fix packet offset computation logic in Tx path

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Fix the packet offset value filled in Tx descriptor.
Also fix a crash in Tx completion handler because of storing wrong
pointer in tx descriptor chain (next)

CRs-Fixed: 1088985
Change-Id: Ie2895700e0bb7e6f4b7b09a01da07a17d1c41160
This commit is contained in:
Pamidipati, Vijay
2016-11-29 01:29:35 +05:30
committed by qcabuildsw
parent 728434f96c
commit b90a79ec7d
2 changed files with 44 additions and 34 deletions
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72
dp/wifi3.0/dp_tx.c
View File

@@ -25,12 +25,12 @@
#include "qdf_nbuf.h"
#include "../../wlan_cfg/wlan_cfg.h"
#ifdef TX_CORE_ALIGNED_SEND
#define DP_TX_GET_DESC_POOL_ID(vdev) qdf_get_cpu()
#define DP_TX_GET_RING_ID(vdev) qdf_get_cpu()
#else
#ifdef TX_PER_VDEV_DESC_POOL
#define DP_TX_GET_DESC_POOL_ID(vdev) (vdev->vdev_id)
#define DP_TX_GET_RING_ID(vdev) (vdev->pdev->pdev_id)
#else
#define DP_TX_GET_DESC_POOL_ID(vdev) qdf_get_cpu()
#define DP_TX_GET_RING_ID(vdev) qdf_get_cpu()
#endif /* TX_CORE_ALIGNED_SEND */
/* TODO Add support in TSO */
@@ -229,6 +229,7 @@ struct dp_tx_ext_desc_elem_s *dp_tx_prepare_ext_desc(struct dp_vdev *vdev,
/* Allocate an extension descriptor */
msdu_ext_desc = dp_tx_ext_desc_alloc(soc, desc_pool_id);
qdf_mem_zero(&cached_ext_desc[0], HAL_TX_EXTENSION_DESC_LEN_BYTES);
if (!msdu_ext_desc)
return NULL;
@@ -310,13 +311,16 @@ struct dp_tx_desc_s *dp_tx_prepare_desc_single(struct dp_vdev *vdev,
tx_desc->vdev = vdev;
tx_desc->msdu_ext_desc = NULL;
/*
* For non-scatter regular frames, buffer pointer is directly
* programmed in TCL input descriptor instead of using an MSDU extension
* descriptor.For the direct buffer pointer case, HW requirement is that
* descriptor should always point to a 8-byte aligned address.
*/
align_pad = (uint8_t)((uintptr_t) (qdf_nbuf_data(nbuf)) & 0x7);
if (qdf_nbuf_map_nbytes_single(soc->osdev, nbuf,
QDF_DMA_TO_DEVICE, qdf_nbuf_len(nbuf)
!= QDF_STATUS_SUCCESS)) {
/* Handle failure */
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"qdf_nbuf_map_nbytes_single failed\n");
goto failure;
}
align_pad = ((unsigned long) qdf_nbuf_mapped_paddr_get(nbuf)) & 0x7;
tx_desc->pkt_offset = align_pad;
/*
@@ -326,7 +330,8 @@ struct dp_tx_desc_s *dp_tx_prepare_desc_single(struct dp_vdev *vdev,
* These are filled in HTT MSDU descriptor and sent in frame pre-header.
* These frames are sent as exception packets to firmware.
*/
if (qdf_unlikely(vdev->mesh_vdev || (vdev->opmode == wlan_op_mode_ocb))) {
if (qdf_unlikely(vdev->mesh_vdev ||
(vdev->opmode == wlan_op_mode_ocb))) {
htt_hdr_size = dp_tx_prepare_htt_metadata(vdev, nbuf,
align_pad);
tx_desc->pkt_offset += htt_hdr_size;
@@ -353,15 +358,6 @@ struct dp_tx_desc_s *dp_tx_prepare_desc_single(struct dp_vdev *vdev,
pdev->num_tx_exception++;
}
if (qdf_nbuf_map_nbytes_single(soc->osdev, nbuf,
QDF_DMA_TO_DEVICE, qdf_nbuf_len(nbuf)
!= QDF_STATUS_SUCCESS)) {
/* Handle failure */
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"qdf_nbuf_map_nbytes_single failed\n");
goto failure;
}
return tx_desc;
failure:
@@ -497,14 +493,20 @@ QDF_STATUS dp_tx_hw_enqueue(struct dp_soc *soc, struct dp_vdev *vdev,
} else {
length = qdf_nbuf_len(tx_desc->nbuf);
type = HAL_TX_BUF_TYPE_BUFFER;
dma_addr = qdf_nbuf_mapped_paddr_get(tx_desc->nbuf);
/**
* For non-scatter regular frames, buffer pointer is directly
* programmed in TCL input descriptor instead of using an MSDU
* extension descriptor.For the direct buffer pointer case, HW
* requirement is that descriptor should always point to a
* 8-byte aligned address.
* Alignment padding is already accounted in pkt_offset
*
*/
dma_addr = (qdf_nbuf_mapped_paddr_get(tx_desc->nbuf) -
tx_desc->pkt_offset);
}
/*
* Address given to TCL should always be 8-byte aligned.
* Alignment bytes are already accounted in length as pkt_offset
*/
dma_addr -= ((uint32_t) dma_addr & 0x7);
hal_tx_desc_set_fw_metadata(hal_tx_desc_cached, fw_metadata);
hal_tx_desc_set_buf_addr(hal_tx_desc_cached,
@@ -515,7 +517,8 @@ QDF_STATUS dp_tx_hw_enqueue(struct dp_soc *soc, struct dp_vdev *vdev,
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"%s length:%d , type = %d, dma_addr %llx, offset %d\n",
__func__, length, type, (uint64_t)dma_addr, tx_desc->pkt_offset);
__func__, length, type, (uint64_t)dma_addr,
tx_desc->pkt_offset);
if (tx_desc->flags & DP_TX_DESC_FLAG_TO_FW)
hal_tx_desc_set_to_fw(hal_tx_desc_cached, 1);
@@ -841,6 +844,12 @@ qdf_nbuf_t dp_tx_send(void *vap_dev, qdf_nbuf_t nbuf)
*/
dp_tx_get_queue(vdev, nbuf, &msdu_info.tx_queue);
/*
* Set Default Host TID value to invalid TID
* (TID override disabled)
*/
msdu_info.tid = HTT_TX_EXT_TID_INVALID;
/*
* TCL H/W supports 2 DSCP-TID mapping tables.
* Table 1 - Default DSCP-TID mapping table
@@ -1226,17 +1235,18 @@ uint32_t dp_tx_comp_handler(struct dp_soc *soc, uint32_t ring_id,
/* First ring descriptor on the cycle */
if (!head_desc) {
head_desc = tx_desc;
tail_desc = tx_desc;
} else {
tail_desc->next = tx_desc;
}
tail_desc->next = tx_desc;
tail_desc = tx_desc;
/* Collect hw completion contents */
hal_tx_comp_desc_sync(tx_comp_hal_desc,
&tx_desc->comp, soc->process_tx_status);
}
tail_desc = tx_desc;
num_processed++;
/*

6
hal/wifi3.0/hal_tx.h
View File

@@ -72,7 +72,7 @@ do { \
#define HAL_TX_COMP_HTT_STATUS_LEN 8
#define HAL_TX_BUF_TYPE_BUFFER 0
#define HAL_TX_BUF_TYPE_EXT_DESC 2
#define HAL_TX_BUF_TYPE_EXT_DESC 1
#define HAL_TX_EXT_DESC_BUF_OFFSET TX_MSDU_EXTENSION_6_BUF0_PTR_31_0_OFFSET
#define HAL_TX_EXT_BUF_LOW_MASK TX_MSDU_EXTENSION_6_BUF0_PTR_31_0_MASK
@@ -277,8 +277,8 @@ static inline void hal_tx_desc_set_buf_addr(void *desc,
HAL_TX_SM(BUFFER_ADDR_INFO_1, SW_BUFFER_COOKIE, desc_id);
/* Set Buffer or Ext Descriptor Type */
HAL_SET_FLD(desc, TCL_DATA_CMD_1,
BUFFER_ADDR_INFO_BUF_ADDR_INFO) |=
HAL_SET_FLD(desc, TCL_DATA_CMD_2,
BUF_OR_EXT_DESC_TYPE) |=
HAL_TX_SM(TCL_DATA_CMD_2, BUF_OR_EXT_DESC_TYPE, type);
}