ath10k: support ethtool stats

Add support for reading firmware stats through the ethtool
API.  This may be easier for applications to manipulate
compared to parsing a text based debugfs file.

kvalo: remove unneeded ifdefs, call ath10k_debug_fw_stats_request() and added
simple error handling

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index 8d3db1c..2bb894f 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -1130,6 +1130,166 @@ exit:
        return ret;
 }
 
+/* TODO:  Would be nice to always support ethtool stats, would need to
+ * move the stats storage out of ath10k_debug, or always have ath10k_debug
+ * struct available..
+ */
+
+/* This generally cooresponds to the debugfs fw_stats file */
+static const char ath10k_gstrings_stats[][ETH_GSTRING_LEN] = {
+       "tx_pkts_nic",
+       "tx_bytes_nic",
+       "rx_pkts_nic",
+       "rx_bytes_nic",
+       "d_noise_floor",
+       "d_cycle_count",
+       "d_phy_error",
+       "d_rts_bad",
+       "d_rts_good",
+       "d_tx_power", /* in .5 dbM I think */
+       "d_rx_crc_err", /* fcs_bad */
+       "d_no_beacon",
+       "d_tx_mpdus_queued",
+       "d_tx_msdu_queued",
+       "d_tx_msdu_dropped",
+       "d_local_enqued",
+       "d_local_freed",
+       "d_tx_ppdu_hw_queued",
+       "d_tx_ppdu_reaped",
+       "d_tx_fifo_underrun",
+       "d_tx_ppdu_abort",
+       "d_tx_mpdu_requed",
+       "d_tx_excessive_retries",
+       "d_tx_hw_rate",
+       "d_tx_dropped_sw_retries",
+       "d_tx_illegal_rate",
+       "d_tx_continuous_xretries",
+       "d_tx_timeout",
+       "d_tx_mpdu_txop_limit",
+       "d_pdev_resets",
+       "d_rx_mid_ppdu_route_change",
+       "d_rx_status",
+       "d_rx_extra_frags_ring0",
+       "d_rx_extra_frags_ring1",
+       "d_rx_extra_frags_ring2",
+       "d_rx_extra_frags_ring3",
+       "d_rx_msdu_htt",
+       "d_rx_mpdu_htt",
+       "d_rx_msdu_stack",
+       "d_rx_mpdu_stack",
+       "d_rx_phy_err",
+       "d_rx_phy_err_drops",
+       "d_rx_mpdu_errors", /* FCS, MIC, ENC */
+       "d_fw_crash_count",
+       "d_fw_warm_reset_count",
+       "d_fw_cold_reset_count",
+};
+
+#define ATH10K_SSTATS_LEN ARRAY_SIZE(ath10k_gstrings_stats)
+
+void ath10k_debug_get_et_strings(struct ieee80211_hw *hw,
+                                struct ieee80211_vif *vif,
+                                u32 sset, u8 *data)
+{
+       if (sset == ETH_SS_STATS)
+               memcpy(data, *ath10k_gstrings_stats,
+                      sizeof(ath10k_gstrings_stats));
+}
+
+int ath10k_debug_get_et_sset_count(struct ieee80211_hw *hw,
+                                  struct ieee80211_vif *vif, int sset)
+{
+       if (sset == ETH_SS_STATS)
+               return ATH10K_SSTATS_LEN;
+
+       return 0;
+}
+
+void ath10k_debug_get_et_stats(struct ieee80211_hw *hw,
+                              struct ieee80211_vif *vif,
+                              struct ethtool_stats *stats, u64 *data)
+{
+       struct ath10k *ar = hw->priv;
+       static const struct ath10k_fw_stats_pdev zero_stats = {};
+       const struct ath10k_fw_stats_pdev *pdev_stats;
+       int i = 0, ret;
+
+       mutex_lock(&ar->conf_mutex);
+
+       if (ar->state == ATH10K_STATE_ON) {
+               ret = ath10k_debug_fw_stats_request(ar);
+               if (ret) {
+                       /* just print a warning and try to use older results */
+                       ath10k_warn(ar,
+                                   "failed to get fw stats for ethtool: %d\n",
+                                   ret);
+               }
+       }
+
+       pdev_stats = list_first_entry_or_null(&ar->debug.fw_stats.pdevs,
+                                             struct ath10k_fw_stats_pdev,
+                                             list);
+       if (!pdev_stats) {
+               /* no results available so just return zeroes */
+               pdev_stats = &zero_stats;
+       }
+
+       spin_lock_bh(&ar->data_lock);
+
+       data[i++] = pdev_stats->hw_reaped; /* ppdu reaped */
+       data[i++] = 0; /* tx bytes */
+       data[i++] = pdev_stats->htt_mpdus;
+       data[i++] = 0; /* rx bytes */
+       data[i++] = pdev_stats->ch_noise_floor;
+       data[i++] = pdev_stats->cycle_count;
+       data[i++] = pdev_stats->phy_err_count;
+       data[i++] = pdev_stats->rts_bad;
+       data[i++] = pdev_stats->rts_good;
+       data[i++] = pdev_stats->chan_tx_power;
+       data[i++] = pdev_stats->fcs_bad;
+       data[i++] = pdev_stats->no_beacons;
+       data[i++] = pdev_stats->mpdu_enqued;
+       data[i++] = pdev_stats->msdu_enqued;
+       data[i++] = pdev_stats->wmm_drop;
+       data[i++] = pdev_stats->local_enqued;
+       data[i++] = pdev_stats->local_freed;
+       data[i++] = pdev_stats->hw_queued;
+       data[i++] = pdev_stats->hw_reaped;
+       data[i++] = pdev_stats->underrun;
+       data[i++] = pdev_stats->tx_abort;
+       data[i++] = pdev_stats->mpdus_requed;
+       data[i++] = pdev_stats->tx_ko;
+       data[i++] = pdev_stats->data_rc;
+       data[i++] = pdev_stats->sw_retry_failure;
+       data[i++] = pdev_stats->illgl_rate_phy_err;
+       data[i++] = pdev_stats->pdev_cont_xretry;
+       data[i++] = pdev_stats->pdev_tx_timeout;
+       data[i++] = pdev_stats->txop_ovf;
+       data[i++] = pdev_stats->pdev_resets;
+       data[i++] = pdev_stats->mid_ppdu_route_change;
+       data[i++] = pdev_stats->status_rcvd;
+       data[i++] = pdev_stats->r0_frags;
+       data[i++] = pdev_stats->r1_frags;
+       data[i++] = pdev_stats->r2_frags;
+       data[i++] = pdev_stats->r3_frags;
+       data[i++] = pdev_stats->htt_msdus;
+       data[i++] = pdev_stats->htt_mpdus;
+       data[i++] = pdev_stats->loc_msdus;
+       data[i++] = pdev_stats->loc_mpdus;
+       data[i++] = pdev_stats->phy_errs;
+       data[i++] = pdev_stats->phy_err_drop;
+       data[i++] = pdev_stats->mpdu_errs;
+       data[i++] = ar->stats.fw_crash_counter;
+       data[i++] = ar->stats.fw_warm_reset_counter;
+       data[i++] = ar->stats.fw_cold_reset_counter;
+
+       spin_unlock_bh(&ar->data_lock);
+
+       mutex_unlock(&ar->conf_mutex);
+
+       WARN_ON(i != ATH10K_SSTATS_LEN);
+}
+
 static const struct file_operations fops_fw_dbglog = {
        .read = ath10k_read_fw_dbglog,
        .write = ath10k_write_fw_dbglog,

diff --git a/drivers/net/wireless/ath/ath10k/debug.h b/drivers/net/wireless/ath/ath10k/debug.h
index efbcd29..d6a565d 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/debug.h
+++ b/drivers/net/wireless/ath/ath10k/debug.h
@@ -63,6 +63,15 @@ void ath10k_debug_dbglog_add(struct ath10k *ar, u8 *buffer, int len);
 
 #define ATH10K_DFS_STAT_INC(ar, c) (ar->debug.dfs_stats.c++)
 
+void ath10k_debug_get_et_strings(struct ieee80211_hw *hw,
+                                struct ieee80211_vif *vif,
+                                u32 sset, u8 *data);
+int ath10k_debug_get_et_sset_count(struct ieee80211_hw *hw,
+                                  struct ieee80211_vif *vif, int sset);
+void ath10k_debug_get_et_stats(struct ieee80211_hw *hw,
+                              struct ieee80211_vif *vif,
+                              struct ethtool_stats *stats, u64 *data);
+
 #else
 static inline int ath10k_debug_start(struct ath10k *ar)
 {
@@ -115,6 +124,10 @@ ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
 
 #define ATH10K_DFS_STAT_INC(ar, c) do { } while (0)
 
+#define ath10k_debug_get_et_strings NULL
+#define ath10k_debug_get_et_sset_count NULL
+#define ath10k_debug_get_et_stats NULL
+
 #endif /* CONFIG_ATH10K_DEBUGFS */
 
 #ifdef CONFIG_ATH10K_DEBUG

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 51b16e1..a65572c 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -4505,6 +4505,9 @@ static const struct ieee80211_ops ath10k_ops = {
        .sta_rc_update                  = ath10k_sta_rc_update,
        .get_tsf                        = ath10k_get_tsf,
        .ampdu_action                   = ath10k_ampdu_action,
+       .get_et_sset_count              = ath10k_debug_get_et_sset_count,
+       .get_et_stats                   = ath10k_debug_get_et_stats,
+       .get_et_strings                 = ath10k_debug_get_et_strings,
 
        CFG80211_TESTMODE_CMD(ath10k_tm_cmd)