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qcacmn: Restrict DMA Map/UnMap upto buffer size

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Restrict DMA Map/UnMap upto buffer size for packets in rx process.
This gives 2-3% cpu gain in peak throughput.

Change-Id: Iaf5e9f6f734d80b6d2c234bd8e679cf2a81c7e2c
CRs-Fixed: 2660698
This commit is contained in:
Varsha Mishra
2020-04-20 11:59:09 +05:30
committed by nshrivas
parent ac0322cce9
commit c71df5eef4
3 changed files with 35 additions and 24 deletions
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38
dp/wifi3.0/dp_rx.c
View File

@@ -247,8 +247,9 @@ QDF_STATUS dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id,
break;
}
ret = qdf_nbuf_map_single(dp_soc->osdev, rx_netbuf,
QDF_DMA_FROM_DEVICE);
ret = qdf_nbuf_map_nbytes_single(dp_soc->osdev, rx_netbuf,
QDF_DMA_FROM_DEVICE, buf_size);
if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) {
qdf_nbuf_free(rx_netbuf);
DP_STATS_INC(dp_pdev, replenish.map_err, 1);
@@ -1992,14 +1993,6 @@ more_data:
}
/*
* move unmap after scattered msdu waiting break logic
* in case double skb unmap happened.
*/
qdf_nbuf_unmap_single(soc->osdev, rx_desc->nbuf,
QDF_DMA_FROM_DEVICE);
rx_desc->unmapped = 1;
core_id = smp_processor_id();
DP_STATS_INC(soc, rx.ring_packets[core_id][ring_id], 1);
@@ -2057,6 +2050,15 @@ more_data:
QDF_NBUF_CB_RX_CTX_ID(rx_desc->nbuf) = reo_ring_num;
/*
* move unmap after scattered msdu waiting break logic
* in case double skb unmap happened.
*/
rx_desc_pool = &soc->rx_desc_buf[rx_desc->pool_id];
qdf_nbuf_unmap_nbytes_single(soc->osdev, rx_desc->nbuf,
QDF_DMA_FROM_DEVICE,
rx_desc_pool->buf_size);
rx_desc->unmapped = 1;
DP_RX_LIST_APPEND(nbuf_head, nbuf_tail, rx_desc->nbuf);
/*
@@ -2500,8 +2502,10 @@ dp_pdev_nbuf_alloc_and_map(struct dp_soc *dp_soc, qdf_nbuf_t *nbuf,
return ret;
}
ret = qdf_nbuf_map_single(dp_soc->osdev, *nbuf,
QDF_DMA_FROM_DEVICE);
ret = qdf_nbuf_map_nbytes_single(dp_soc->osdev, *nbuf,
QDF_DMA_FROM_DEVICE,
rx_desc_pool->buf_size);
if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) {
qdf_nbuf_free(*nbuf);
dp_err("nbuf map failed");
@@ -2513,8 +2517,9 @@ dp_pdev_nbuf_alloc_and_map(struct dp_soc *dp_soc, qdf_nbuf_t *nbuf,
ret = check_x86_paddr(dp_soc, nbuf, &paddr, rx_desc_pool);
if (ret == QDF_STATUS_E_FAILURE) {
qdf_nbuf_unmap_single(dp_soc->osdev, *nbuf,
QDF_DMA_FROM_DEVICE);
qdf_nbuf_unmap_nbytes_single(dp_soc->osdev, *nbuf,
QDF_DMA_FROM_DEVICE,
rx_desc_pool->buf_size);
qdf_nbuf_free(*nbuf);
dp_err("nbuf check x86 failed");
DP_STATS_INC(dp_pdev, replenish.x86_fail, 1);
@@ -2751,8 +2756,9 @@ dp_rx_nbuf_prepare(struct dp_soc *soc, struct dp_pdev *pdev)
memset(buf, 0, RX_DATA_BUFFER_SIZE);
ret = qdf_nbuf_map_single(soc->osdev, nbuf,
QDF_DMA_FROM_DEVICE);
ret = qdf_nbuf_map_nbytes_single(soc->osdev, nbuf,
QDF_DMA_FROM_DEVICE,
RX_DATA_BUFFER_SIZE);
/* nbuf map failed */
if (qdf_unlikely(QDF_IS_STATUS_ERROR(ret))) {

6
dp/wifi3.0/dp_rx_defrag.c
View File

@@ -1703,6 +1703,7 @@ uint32_t dp_rx_frag_handle(struct dp_soc *soc, hal_ring_desc_t ring_desc,
uint32_t rx_bfs = 0;
struct dp_pdev *pdev;
QDF_STATUS status = QDF_STATUS_SUCCESS;
struct rx_desc_pool *rx_desc_pool;
qdf_assert(soc);
qdf_assert(mpdu_desc_info);
@@ -1730,7 +1731,10 @@ uint32_t dp_rx_frag_handle(struct dp_soc *soc, hal_ring_desc_t ring_desc,
msdu = rx_desc->nbuf;
qdf_nbuf_unmap_single(soc->osdev, msdu, QDF_DMA_FROM_DEVICE);
rx_desc_pool = &soc->rx_desc_buf[rx_desc->pool_id];
qdf_nbuf_unmap_nbytes_single(soc->osdev, rx_desc->nbuf,
QDF_DMA_FROM_DEVICE,
rx_desc_pool->buf_size);
rx_desc->unmapped = 1;
rx_desc->rx_buf_start = qdf_nbuf_data(msdu);

15
dp/wifi3.0/dp_rx_mon_status.c
View File

@@ -1689,7 +1689,9 @@ dp_rx_mon_status_srng_process(struct dp_soc *soc, uint32_t mac_id,
uint8_t *status_buf;
qdf_dma_addr_t paddr;
uint64_t buf_addr;
struct rx_desc_pool *rx_desc_pool;
rx_desc_pool = &soc->rx_desc_status[mac_id];
buf_addr =
(HAL_RX_BUFFER_ADDR_31_0_GET(
rxdma_mon_status_ring_entry) |
@@ -1741,8 +1743,9 @@ dp_rx_mon_status_srng_process(struct dp_soc *soc, uint32_t mac_id,
}
qdf_nbuf_set_pktlen(status_nbuf, RX_DATA_BUFFER_SIZE);
qdf_nbuf_unmap_single(soc->osdev, status_nbuf,
QDF_DMA_FROM_DEVICE);
qdf_nbuf_unmap_nbytes_single(soc->osdev, status_nbuf,
QDF_DMA_FROM_DEVICE,
rx_desc_pool->buf_size);
/* Put the status_nbuf to queue */
qdf_nbuf_queue_add(&pdev->rx_status_q, status_nbuf);
@@ -1750,11 +1753,8 @@ dp_rx_mon_status_srng_process(struct dp_soc *soc, uint32_t mac_id,
} else {
union dp_rx_desc_list_elem_t *desc_list = NULL;
union dp_rx_desc_list_elem_t *tail = NULL;
struct rx_desc_pool *rx_desc_pool;
uint32_t num_alloc_desc;
rx_desc_pool = &soc->rx_desc_status[mac_id];
num_alloc_desc = dp_rx_get_free_desc_list(soc, mac_id,
rx_desc_pool,
1,
@@ -2005,8 +2005,9 @@ QDF_STATUS dp_rx_mon_status_buffers_replenish(struct dp_soc *dp_soc,
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"[%s][%d] rxdma_ring_entry is NULL, count - %d",
__func__, __LINE__, count);
qdf_nbuf_unmap_single(dp_soc->osdev, rx_netbuf,
QDF_DMA_FROM_DEVICE);
qdf_nbuf_unmap_nbytes_single(dp_soc->osdev, rx_netbuf,
QDF_DMA_FROM_DEVICE,
rx_desc_pool->buf_size);
qdf_nbuf_free(rx_netbuf);
break;
}