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Commit 5326849a authored by Michal Kazior's avatar Michal Kazior Committed by Kalle Valo
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ath10k: fix fw stats processing 

If stat data exceeds wmi-htc buffer limits
firmware splits it into many wmi stats update
events which are delivered in a ping-pong fashion
triggered by wmi stats request command.

Since there's only an implicit start-of-data and
no end-of-data indications the driver has to
perform some trickery to get complete stat data.

kvalo: use %zu to fix a compiler warning and fix a typo in a comment
Signed-off-by: default avatarMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent fb2e9c0c
Hide whitespace changes
Inline Side-by-side
Showing with 252 additions and 95 deletions
drivers/net/wireless/ath/ath10k/core.h
View file @ 5326849a
......@@ -117,13 +117,17 @@ struct ath10k_wmi {
};
struct ath10k_fw_stats_peer {
struct list_head list;
u8 peer_macaddr[ETH_ALEN];
u32 peer_rssi;
u32 peer_tx_rate;
u32 peer_rx_rate; /* 10x only */
};
struct ath10k_fw_stats {
struct ath10k_fw_stats_pdev {
struct list_head list;
/* PDEV stats */
s32 ch_noise_floor;
u32 tx_frame_count;
......@@ -178,15 +182,11 @@ struct ath10k_fw_stats {
s32 phy_errs;
s32 phy_err_drop;
s32 mpdu_errs;
};
/* VDEV STATS */
/* PEER STATS */
u8 peers;
struct ath10k_fw_stats_peer peer_stat[TARGET_NUM_PEERS];
/* TODO: Beacon filter stats */
struct ath10k_fw_stats {
struct list_head pdevs;
struct list_head peers;
};
struct ath10k_dfs_stats {
......@@ -294,6 +294,7 @@ struct ath10k_debug {
struct ath10k_fw_stats fw_stats;
struct completion fw_stats_complete;
bool fw_stats_done;
DECLARE_BITMAP(wmi_service_bitmap, WMI_SERVICE_MAX);
unsigned long htt_stats_mask;
......
drivers/net/wireless/ath/ath10k/debug.c
View file @ 5326849a
......@@ -239,39 +239,154 @@ static const struct file_operations fops_wmi_services = {
.llseek = default_llseek,
};
static void ath10k_debug_fw_stats_pdevs_free(struct list_head *head)
{
struct ath10k_fw_stats_pdev *i, *tmp;
list_for_each_entry_safe(i, tmp, head, list) {
list_del(&i->list);
kfree(i);
}
}
static void ath10k_debug_fw_stats_peers_free(struct list_head *head)
{
struct ath10k_fw_stats_peer *i, *tmp;
list_for_each_entry_safe(i, tmp, head, list) {
list_del(&i->list);
kfree(i);
}
}
static void ath10k_debug_fw_stats_reset(struct ath10k *ar)
{
spin_lock_bh(&ar->data_lock);
ar->debug.fw_stats_done = false;
ath10k_debug_fw_stats_pdevs_free(&ar->debug.fw_stats.pdevs);
ath10k_debug_fw_stats_peers_free(&ar->debug.fw_stats.peers);
spin_unlock_bh(&ar->data_lock);
}
static size_t ath10k_debug_fw_stats_num_peers(struct list_head *head)
{
struct ath10k_fw_stats_peer *i;
size_t num = 0;
list_for_each_entry(i, head, list)
++num;
return num;
}
void ath10k_debug_fw_stats_process(struct ath10k *ar, struct sk_buff *skb)
{
struct ath10k_fw_stats stats = {};
bool is_start, is_started, is_end;
size_t num_peers;
int ret;
spin_lock_bh(&ar->data_lock);
INIT_LIST_HEAD(&stats.pdevs);
INIT_LIST_HEAD(&stats.peers);
ret = ath10k_wmi_pull_fw_stats(ar, skb, &ar->debug.fw_stats);
spin_lock_bh(&ar->data_lock);
ret = ath10k_wmi_pull_fw_stats(ar, skb, &stats);
if (ret) {
ath10k_warn(ar, "failed to pull fw stats: %d\n", ret);
goto unlock;
}
/* Stat data may exceed htc-wmi buffer limit. In such case firmware
* splits the stats data and delivers it in a ping-pong fashion of
* request cmd-update event.
*
* However there is no explicit end-of-data. Instead start-of-data is
* used as an implicit one. This works as follows:
* a) discard stat update events until one with pdev stats is
* delivered - this skips session started at end of (b)
* b) consume stat update events until another one with pdev stats is
* delivered which is treated as end-of-data and is itself discarded
*/
if (ar->debug.fw_stats_done) {
ath10k_warn(ar, "received unsolicited stats update event\n");
goto free;
}
num_peers = ath10k_debug_fw_stats_num_peers(&ar->debug.fw_stats.peers);
is_start = (list_empty(&ar->debug.fw_stats.pdevs) &&
!list_empty(&stats.pdevs));
is_end = (!list_empty(&ar->debug.fw_stats.pdevs) &&
!list_empty(&stats.pdevs));
if (is_start)
list_splice_tail_init(&stats.pdevs, &ar->debug.fw_stats.pdevs);
if (is_end)
ar->debug.fw_stats_done = true;
is_started = !list_empty(&ar->debug.fw_stats.pdevs);
if (is_started && !is_end) {
if (num_peers >= ATH10K_MAX_NUM_PEER_IDS) {
/* Although this is unlikely impose a sane limit to
* prevent firmware from DoS-ing the host.
*/
ath10k_warn(ar, "dropping fw peer stats\n");
goto free;
}
list_splice_tail_init(&stats.peers, &ar->debug.fw_stats.peers);
}
complete(&ar->debug.fw_stats_complete);
free:
/* In some cases lists have been spliced and cleared. Free up
* resources if that is not the case.
*/
ath10k_debug_fw_stats_pdevs_free(&stats.pdevs);
ath10k_debug_fw_stats_peers_free(&stats.peers);
unlock:
spin_unlock_bh(&ar->data_lock);
}
static int ath10k_fw_stats_request(struct ath10k *ar)
static int ath10k_debug_fw_stats_request(struct ath10k *ar)
{
unsigned long timeout;
int ret;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT);
if (ret) {
ath10k_warn(ar, "failed to fw stat request command: %d\n", ret);
return ret;
}
timeout = jiffies + msecs_to_jiffies(1*HZ);
ath10k_debug_fw_stats_reset(ar);
for (;;) {
if (time_after(jiffies, timeout))
return -ETIMEDOUT;
reinit_completion(&ar->debug.fw_stats_complete);
ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT);
if (ret) {
ath10k_warn(ar, "could not request stats (%d)\n", ret);
return ret;
}
ret = wait_for_completion_timeout(&ar->debug.fw_stats_complete, 1*HZ);
if (ret <= 0)
return -ETIMEDOUT;
ret = wait_for_completion_timeout(&ar->debug.fw_stats_complete,
1*HZ);
if (ret <= 0)
return -ETIMEDOUT;
spin_lock_bh(&ar->data_lock);
if (ar->debug.fw_stats_done) {
spin_unlock_bh(&ar->data_lock);
break;
}
spin_unlock_bh(&ar->data_lock);
}
return 0;
}
......@@ -285,9 +400,21 @@ static void ath10k_fw_stats_fill(struct ath10k *ar,
{
unsigned int len = 0;
unsigned int buf_len = ATH10K_FW_STATS_BUF_SIZE;
int i;
const struct ath10k_fw_stats_pdev *pdev;
const struct ath10k_fw_stats_peer *peer;
size_t num_peers;
spin_lock_bh(&ar->data_lock);
pdev = list_first_entry_or_null(&fw_stats->pdevs,
struct ath10k_fw_stats_pdev, list);
if (!pdev) {
ath10k_warn(ar, "failed to get pdev stats\n");
goto unlock;
}
num_peers = ath10k_debug_fw_stats_num_peers(&fw_stats->peers);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s\n",
"ath10k PDEV stats");
......@@ -295,29 +422,29 @@ static void ath10k_fw_stats_fill(struct ath10k *ar,
"=================");
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Channel noise floor", fw_stats->ch_noise_floor);
"Channel noise floor", pdev->ch_noise_floor);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"Channel TX power", fw_stats->chan_tx_power);
"Channel TX power", pdev->chan_tx_power);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"TX frame count", fw_stats->tx_frame_count);
"TX frame count", pdev->tx_frame_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RX frame count", fw_stats->rx_frame_count);
"RX frame count", pdev->rx_frame_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RX clear count", fw_stats->rx_clear_count);
"RX clear count", pdev->rx_clear_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"Cycle count", fw_stats->cycle_count);
"Cycle count", pdev->cycle_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"PHY error count", fw_stats->phy_err_count);
"PHY error count", pdev->phy_err_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RTS bad count", fw_stats->rts_bad);
"RTS bad count", pdev->rts_bad);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RTS good count", fw_stats->rts_good);
"RTS good count", pdev->rts_good);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"FCS bad count", fw_stats->fcs_bad);
"FCS bad count", pdev->fcs_bad);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"No beacon count", fw_stats->no_beacons);
"No beacon count", pdev->no_beacons);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"MIB int count", fw_stats->mib_int_count);
"MIB int count", pdev->mib_int_count);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s\n",
......@@ -326,51 +453,51 @@ static void ath10k_fw_stats_fill(struct ath10k *ar,
"=================");
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HTT cookies queued", fw_stats->comp_queued);
"HTT cookies queued", pdev->comp_queued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HTT cookies disp.", fw_stats->comp_delivered);
"HTT cookies disp.", pdev->comp_delivered);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDU queued", fw_stats->msdu_enqued);
"MSDU queued", pdev->msdu_enqued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDU queued", fw_stats->mpdu_enqued);
"MPDU queued", pdev->mpdu_enqued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDUs dropped", fw_stats->wmm_drop);
"MSDUs dropped", pdev->wmm_drop);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Local enqued", fw_stats->local_enqued);
"Local enqued", pdev->local_enqued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Local freed", fw_stats->local_freed);
"Local freed", pdev->local_freed);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HW queued", fw_stats->hw_queued);
"HW queued", pdev->hw_queued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PPDUs reaped", fw_stats->hw_reaped);
"PPDUs reaped", pdev->hw_reaped);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Num underruns", fw_stats->underrun);
"Num underruns", pdev->underrun);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PPDUs cleaned", fw_stats->tx_abort);
"PPDUs cleaned", pdev->tx_abort);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDUs requed", fw_stats->mpdus_requed);
"MPDUs requed", pdev->mpdus_requed);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Excessive retries", fw_stats->tx_ko);
"Excessive retries", pdev->tx_ko);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HW rate", fw_stats->data_rc);
"HW rate", pdev->data_rc);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Sched self tiggers", fw_stats->self_triggers);
"Sched self tiggers", pdev->self_triggers);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Dropped due to SW retries",
fw_stats->sw_retry_failure);
pdev->sw_retry_failure);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Illegal rate phy errors",
fw_stats->illgl_rate_phy_err);
pdev->illgl_rate_phy_err);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Pdev continous xretry", fw_stats->pdev_cont_xretry);
"Pdev continous xretry", pdev->pdev_cont_xretry);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"TX timeout", fw_stats->pdev_tx_timeout);
"TX timeout", pdev->pdev_tx_timeout);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PDEV resets", fw_stats->pdev_resets);
"PDEV resets", pdev->pdev_resets);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PHY underrun", fw_stats->phy_underrun);
"PHY underrun", pdev->phy_underrun);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDU is more than txop limit", fw_stats->txop_ovf);
"MPDU is more than txop limit", pdev->txop_ovf);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s\n",
......@@ -380,54 +507,53 @@ static void ath10k_fw_stats_fill(struct ath10k *ar,
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Mid PPDU route change",
fw_stats->mid_ppdu_route_change);
pdev->mid_ppdu_route_change);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Tot. number of statuses", fw_stats->status_rcvd);
"Tot. number of statuses", pdev->status_rcvd);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 0", fw_stats->r0_frags);
"Extra frags on rings 0", pdev->r0_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 1", fw_stats->r1_frags);
"Extra frags on rings 1", pdev->r1_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 2", fw_stats->r2_frags);
"Extra frags on rings 2", pdev->r2_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 3", fw_stats->r3_frags);
"Extra frags on rings 3", pdev->r3_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDUs delivered to HTT", fw_stats->htt_msdus);
"MSDUs delivered to HTT", pdev->htt_msdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDUs delivered to HTT", fw_stats->htt_mpdus);
"MPDUs delivered to HTT", pdev->htt_mpdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDUs delivered to stack", fw_stats->loc_msdus);
"MSDUs delivered to stack", pdev->loc_msdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDUs delivered to stack", fw_stats->loc_mpdus);
"MPDUs delivered to stack", pdev->loc_mpdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Oversized AMSUs", fw_stats->oversize_amsdu);
"Oversized AMSUs", pdev->oversize_amsdu);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PHY errors", fw_stats->phy_errs);
"PHY errors", pdev->phy_errs);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PHY errors drops", fw_stats->phy_err_drop);
"PHY errors drops", pdev->phy_err_drop);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDU errors (FCS, MIC, ENC)", fw_stats->mpdu_errs);
"MPDU errors (FCS, MIC, ENC)", pdev->mpdu_errs);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s (%d)\n",
"ath10k PEER stats", fw_stats->peers);
len += scnprintf(buf + len, buf_len - len, "%30s (%zu)\n",
"ath10k PEER stats", num_peers);
len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
"=================");
for (i = 0; i < fw_stats->peers; i++) {
list_for_each_entry(peer, &fw_stats->peers, list) {
len += scnprintf(buf + len, buf_len - len, "%30s %pM\n",
"Peer MAC address",
fw_stats->peer_stat[i].peer_macaddr);
"Peer MAC address", peer->peer_macaddr);
len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
"Peer RSSI", fw_stats->peer_stat[i].peer_rssi);
"Peer RSSI", peer->peer_rssi);
len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
"Peer TX rate",
fw_stats->peer_stat[i].peer_tx_rate);
"Peer TX rate", peer->peer_tx_rate);
len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
"Peer RX rate",
fw_stats->peer_stat[i].peer_rx_rate);
"Peer RX rate", peer->peer_rx_rate);
len += scnprintf(buf + len, buf_len - len, "\n");
}
unlock:
spin_unlock_bh(&ar->data_lock);
if (len >= buf_len)
......@@ -455,7 +581,7 @@ static int ath10k_fw_stats_open(struct inode *inode, struct file *file)
goto err_unlock;
}
ret = ath10k_fw_stats_request(ar);
ret = ath10k_debug_fw_stats_request(ar);
if (ret) {
ath10k_warn(ar, "failed to request fw stats: %d\n", ret);
goto err_free;
......@@ -1172,6 +1298,9 @@ int ath10k_debug_create(struct ath10k *ar)
if (!ar->debug.fw_crash_data)
return -ENOMEM;
INIT_LIST_HEAD(&ar->debug.fw_stats.pdevs);
INIT_LIST_HEAD(&ar->debug.fw_stats.peers);
return 0;
}
......@@ -1179,6 +1308,8 @@ void ath10k_debug_destroy(struct ath10k *ar)
{
vfree(ar->debug.fw_crash_data);
ar->debug.fw_crash_data = NULL;
ath10k_debug_fw_stats_reset(ar);
}
int ath10k_debug_register(struct ath10k *ar)
......
drivers/net/wireless/ath/ath10k/wmi.c
View file @ 5326849a
......@@ -1330,7 +1330,7 @@ static int ath10k_wmi_event_debug_mesg(struct ath10k *ar, struct sk_buff *skb)
}
static void ath10k_wmi_pull_pdev_stats(const struct wmi_pdev_stats *src,
struct ath10k_fw_stats *dst)
struct ath10k_fw_stats_pdev *dst)
{
const struct wal_dbg_tx_stats *tx = &src->wal.tx;
const struct wal_dbg_rx_stats *rx = &src->wal.rx;
......@@ -1405,26 +1405,38 @@ static int ath10k_wmi_main_pull_fw_stats(struct ath10k *ar,
num_vdev_stats = __le32_to_cpu(ev->num_vdev_stats);
num_peer_stats = __le32_to_cpu(ev->num_peer_stats);
if (num_pdev_stats) {
for (i = 0; i < num_pdev_stats; i++) {
const struct wmi_pdev_stats *src;
struct ath10k_fw_stats_pdev *dst;
src = (void *)skb->data;
if (!skb_pull(skb, sizeof(*src)))
return -EPROTO;
ath10k_wmi_pull_pdev_stats(src, stats);
dst = kzalloc(sizeof(*dst), GFP_ATOMIC);
if (!dst)
continue;
ath10k_wmi_pull_pdev_stats(src, dst);
list_add_tail(&dst->list, &stats->pdevs);
}
/* fw doesn't implement vdev stats */
for (i = 0; i < num_peer_stats; i++) {
const struct wmi_peer_stats *src;
struct ath10k_fw_stats_peer *dst;
src = (void *)skb->data;
if (!skb_pull(skb, sizeof(*src)))
return -EPROTO;
ath10k_wmi_pull_peer_stats(src, &stats->peer_stat[i]);
dst = kzalloc(sizeof(*dst), GFP_ATOMIC);
if (!dst)
continue;
ath10k_wmi_pull_peer_stats(src, dst);
list_add_tail(&dst->list, &stats->peers);
}
return 0;
......@@ -1445,36 +1457,49 @@ static int ath10k_wmi_10x_pull_fw_stats(struct ath10k *ar,
num_vdev_stats = __le32_to_cpu(ev->num_vdev_stats);
num_peer_stats = __le32_to_cpu(ev->num_peer_stats);
if (num_pdev_stats) {
for (i = 0; i < num_pdev_stats; i++) {
const struct wmi_10x_pdev_stats *src;
struct ath10k_fw_stats_pdev *dst;
src = (void *)skb->data;
if (!skb_pull(skb, sizeof(*src)))
return -EPROTO;
ath10k_wmi_pull_pdev_stats(&src->old, stats);
dst = kzalloc(sizeof(*dst), GFP_ATOMIC);
if (!dst)
continue;
ath10k_wmi_pull_pdev_stats(&src->old, dst);
dst->ack_rx_bad = __le32_to_cpu(src->ack_rx_bad);
dst->rts_bad = __le32_to_cpu(src->rts_bad);
dst->rts_good = __le32_to_cpu(src->rts_good);
dst->fcs_bad = __le32_to_cpu(src->fcs_bad);
dst->no_beacons = __le32_to_cpu(src->no_beacons);
dst->mib_int_count = __le32_to_cpu(src->mib_int_count);
stats->ack_rx_bad = __le32_to_cpu(src->ack_rx_bad);
stats->rts_bad = __le32_to_cpu(src->rts_bad);
stats->rts_good = __le32_to_cpu(src->rts_good);
stats->fcs_bad = __le32_to_cpu(src->fcs_bad);
stats->no_beacons = __le32_to_cpu(src->no_beacons);
stats->mib_int_count = __le32_to_cpu(src->mib_int_count);
list_add_tail(&dst->list, &stats->pdevs);
}
/* fw doesn't implement vdev stats */
for (i = 0; i < num_peer_stats; i++) {
const struct wmi_10x_peer_stats *src;
struct ath10k_fw_stats_peer *dst;
src = (void *)skb->data;
if (!skb_pull(skb, sizeof(*src)))
return -EPROTO;
ath10k_wmi_pull_peer_stats(&src->old, &stats->peer_stat[i]);
dst = kzalloc(sizeof(*dst), GFP_ATOMIC);
if (!dst)
continue;
ath10k_wmi_pull_peer_stats(&src->old, dst);
dst->peer_rx_rate = __le32_to_cpu(src->peer_rx_rate);
stats->peer_stat[i].peer_rx_rate =
__le32_to_cpu(src->peer_rx_rate);
list_add_tail(&dst->list, &stats->peers);
}
return 0;
......
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