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ath11k: Add dp tx err stats

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Add support for dp tx error stats which logs tx failure reasons due
to ring full condition, etc. This stats is added in soc_dp_stats
which was earlier used as soc_rx_stats so that all dp related info
are logged in same file.

Below is an example usage,

root@OpenWrt:/# cat /sys/kernel/debug/ath11k/ipq8074/soc_dp_stats
SOC RX STATS:

err ring pkts: 0
Invalid RBM: 0
<snip>

SOC TX STATS:

Ring Full Failures:
ring0: 4
ring1: 3
ring2: 5

Misc Transmit Failures: 2

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.1.0.1-01213-QCAHKSWPL_SILICONZ-1

Signed-off-by: Sriram R <srirrama@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1591768308-32005-2-git-send-email-srirrama@codeaurora.org
This commit is contained in:
Sriram R 2020-06-11 08:09:54 +03:00 committed by Kalle Valo
parent 8cacd0389c
commit 0dd6392ac2
3 changed files with 35 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/wireless/ath/ath11k/core.h
View File

@ -590,12 +590,22 @@ struct ath11k_board_data {
/* IPQ8074 HW channel counters frequency value in hertz */
#define IPQ8074_CC_FREQ_HERTZ 320000
struct ath11k_soc_dp_rx_stats {
struct ath11k_soc_dp_tx_err_stats {
/* TCL Ring Descriptor unavailable */
u32 desc_na[DP_TCL_NUM_RING_MAX];
/* Other failures during dp_tx due to mem allocation failure
* idr unavailable etc.
*/
atomic_t misc_fail;
};
struct ath11k_soc_dp_stats {
u32 err_ring_pkts;
u32 invalid_rbm;
u32 rxdma_error[HAL_REO_ENTR_RING_RXDMA_ECODE_MAX];
u32 reo_error[HAL_REO_DEST_RING_ERROR_CODE_MAX];
u32 hal_reo_error[DP_REO_DST_RING_MAX];
struct ath11k_soc_dp_tx_err_stats tx_err;
};
/* Master structure to hold the hw data which may be used in core module */
@ -664,7 +674,7 @@ struct ath11k_base {
struct dentry *debugfs_soc;
struct dentry *debugfs_ath11k;
#endif
struct ath11k_soc_dp_rx_stats soc_stats;
struct ath11k_soc_dp_stats soc_stats;
unsigned long dev_flags;
struct completion driver_recovery;

23
drivers/net/wireless/ath/ath11k/debug.c
View File

@ -739,12 +739,12 @@ static const struct file_operations fops_extd_rx_stats = {
.open = simple_open,
};
static ssize_t ath11k_debug_dump_soc_rx_stats(struct file *file,
static ssize_t ath11k_debug_dump_soc_dp_stats(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath11k_base *ab = file->private_data;
struct ath11k_soc_dp_rx_stats *soc_stats = &ab->soc_stats;
struct ath11k_soc_dp_stats *soc_stats = &ab->soc_stats;
int len = 0, i, retval;
const int size = 4096;
static const char *rxdma_err[HAL_REO_ENTR_RING_RXDMA_ECODE_MAX] = {
@ -788,6 +788,17 @@ static ssize_t ath11k_debug_dump_soc_rx_stats(struct file *file,
soc_stats->hal_reo_error[2],
soc_stats->hal_reo_error[3]);
len += scnprintf(buf + len, size - len, "\nSOC TX STATS:\n");
len += scnprintf(buf + len, size - len, "\nTCL Ring Full Failures:\n");
for (i = 0; i < DP_TCL_NUM_RING_MAX; i++)
len += scnprintf(buf + len, size - len, "ring%d: %u\n",
i, soc_stats->tx_err.desc_na[i]);
len += scnprintf(buf + len, size - len,
"\nMisc Transmit Failures: %d\n",
atomic_read(&soc_stats->tx_err.misc_fail));
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
@ -796,8 +807,8 @@ static ssize_t ath11k_debug_dump_soc_rx_stats(struct file *file,
return retval;
}
static const struct file_operations fops_soc_rx_stats = {
.read = ath11k_debug_dump_soc_rx_stats,
static const struct file_operations fops_soc_dp_stats = {
.read = ath11k_debug_dump_soc_dp_stats,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
@ -819,8 +830,8 @@ int ath11k_debug_pdev_create(struct ath11k_base *ab)
debugfs_create_file("simulate_fw_crash", 0600, ab->debugfs_soc, ab,
&fops_simulate_fw_crash);
debugfs_create_file("soc_rx_stats", 0600, ab->debugfs_soc, ab,
&fops_soc_rx_stats);
debugfs_create_file("soc_dp_stats", 0600, ab->debugfs_soc, ab,
&fops_soc_dp_stats);
return 0;
}

7
drivers/net/wireless/ath/ath11k/dp_tx.c
View File

@ -121,8 +121,10 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
spin_unlock_bh(&tx_ring->tx_idr_lock);
if (ret < 0) {
if (ring_map == (BIT(DP_TCL_NUM_RING_MAX) - 1))
if (ring_map == (BIT(DP_TCL_NUM_RING_MAX) - 1)) {
atomic_inc(&ab->soc_stats.tx_err.misc_fail);
return -ENOSPC;
}
/* Check if the next ring is available */
ring_selector++;
@ -180,11 +182,13 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
default:
/* TODO: Take care of other encap modes as well */
ret = -EINVAL;
atomic_inc(&ab->soc_stats.tx_err.misc_fail);
goto fail_remove_idr;
}
ti.paddr = dma_map_single(ab->dev, skb->data, skb->len, DMA_TO_DEVICE);
if (dma_mapping_error(ab->dev, ti.paddr)) {
atomic_inc(&ab->soc_stats.tx_err.misc_fail);
ath11k_warn(ab, "failed to DMA map data Tx buffer\n");
ret = -ENOMEM;
goto fail_remove_idr;
@ -208,6 +212,7 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
* desc because the desc is directly enqueued onto hw queue.
*/
ath11k_hal_srng_access_end(ab, tcl_ring);
ab->soc_stats.tx_err.desc_na[ti.ring_id]++;
spin_unlock_bh(&tcl_ring->lock);
ret = -ENOMEM;