[net-next v4 6/8] dpaa_eth: add ethtool statistics
From: Madalin Bucur
Date: Mon Nov 02 2015 - 11:50:49 EST
Add a series of counters to be exported through ethtool:
- add detailed counters for reception errors;
- add detailed counters for QMan enqueue reject events;
- count the number of fragmented skbs received from the stack;
- count all frames received on the Tx confirmation path;
- add congestion group statistics;
- count the number of interrupts for each CPU.
Signed-off-by: Ioana Ciornei <ioana.ciornei@xxxxxxxxxxxxx>
Signed-off-by: Madalin Bucur <madalin.bucur@xxxxxxxxxxxxx>
---
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 12 ++
drivers/net/ethernet/freescale/dpaa/dpaa_eth.h | 34 ++++
.../net/ethernet/freescale/dpaa/dpaa_eth_common.c | 40 ++++-
.../net/ethernet/freescale/dpaa/dpaa_eth_common.h | 2 +
drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c | 1 +
drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c | 183 +++++++++++++++++++++
6 files changed, 270 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 894f1a7..0b3332a 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -102,6 +102,15 @@ static void _dpa_rx_error(struct net_device *net_dev,
percpu_priv->stats.rx_errors++;
+ if (fd->status & FM_FD_ERR_DMA)
+ percpu_priv->rx_errors.dme++;
+ if (fd->status & FM_FD_ERR_PHYSICAL)
+ percpu_priv->rx_errors.fpe++;
+ if (fd->status & FM_FD_ERR_SIZE)
+ percpu_priv->rx_errors.fse++;
+ if (fd->status & FM_FD_ERR_PRS_HDR_ERR)
+ percpu_priv->rx_errors.phe++;
+
dpa_fd_release(net_dev, fd);
}
@@ -167,6 +176,8 @@ static void _dpa_tx_conf(struct net_device *net_dev,
percpu_priv->stats.tx_errors++;
}
+ percpu_priv->tx_confirm++;
+
skb = _dpa_cleanup_tx_fd(priv, fd);
dev_kfree_skb(skb);
@@ -302,6 +313,7 @@ static void priv_ern(struct qman_portal *portal,
percpu_priv->stats.tx_dropped++;
percpu_priv->stats.tx_fifo_errors++;
+ count_ern(percpu_priv, msg);
/* If we intended this buffer to go into the pool
* when the FM was done, we need to put it in
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
index 87577cf..ccaadd9 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
@@ -192,6 +192,25 @@ struct dpa_bp {
void (*free_buf_cb)(void *addr);
};
+struct dpa_rx_errors {
+ u64 dme; /* DMA Error */
+ u64 fpe; /* Frame Physical Error */
+ u64 fse; /* Frame Size Error */
+ u64 phe; /* Header Error */
+};
+
+/* Counters for QMan ERN frames - one counter per rejection code */
+struct dpa_ern_cnt {
+ u64 cg_tdrop; /* Congestion group taildrop */
+ u64 wred; /* WRED congestion */
+ u64 err_cond; /* Error condition */
+ u64 early_window; /* Order restoration, frame too early */
+ u64 late_window; /* Order restoration, frame too late */
+ u64 fq_tdrop; /* FQ taildrop */
+ u64 fq_retired; /* FQ is retired */
+ u64 orp_zero; /* ORP disabled */
+};
+
struct dpa_napi_portal {
struct napi_struct napi;
struct qman_portal *p;
@@ -201,7 +220,13 @@ struct dpa_napi_portal {
struct dpa_percpu_priv_s {
struct net_device *net_dev;
struct dpa_napi_portal *np;
+ u64 in_interrupt;
+ u64 tx_confirm;
+ /* fragmented (non-linear) skbuffs received from the stack */
+ u64 tx_frag_skbuffs;
struct rtnl_link_stats64 stats;
+ struct dpa_rx_errors rx_errors;
+ struct dpa_ern_cnt ern_cnt;
};
struct dpa_priv_s {
@@ -228,6 +253,14 @@ struct dpa_priv_s {
* (and the same) congestion group.
*/
struct qman_cgr cgr;
+ /* If congested, when it began. Used for performance stats. */
+ u32 congestion_start_jiffies;
+ /* Number of jiffies the Tx port was congested. */
+ u32 congested_jiffies;
+ /* Counter for the number of times the CGR
+ * entered congestion state
+ */
+ u32 cgr_congested_count;
} cgr_data;
/* Use a per-port CGR for ingress traffic. */
bool use_ingress_cgr;
@@ -289,6 +322,7 @@ static inline int dpaa_eth_napi_schedule(struct dpa_percpu_priv_s *percpu_priv,
np->p = portal;
napi_schedule(&np->napi);
+ percpu_priv->in_interrupt++;
return 1;
}
}
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.c
index 2b95696..4947cb9 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.c
@@ -751,10 +751,15 @@ static void dpaa_eth_cgscn(struct qman_portal *qm, struct qman_cgr *cgr,
struct dpa_priv_s *priv = (struct dpa_priv_s *)container_of(cgr,
struct dpa_priv_s, cgr_data.cgr);
- if (congested)
+ if (congested) {
+ priv->cgr_data.congestion_start_jiffies = jiffies;
netif_tx_stop_all_queues(priv->net_dev);
- else
+ priv->cgr_data.cgr_congested_count++;
+ } else {
+ priv->cgr_data.congested_jiffies +=
+ (jiffies - priv->cgr_data.congestion_start_jiffies);
netif_tx_wake_all_queues(priv->net_dev);
+ }
}
int dpaa_eth_cgr_init(struct dpa_priv_s *priv)
@@ -1252,6 +1257,37 @@ void dpa_fd_release(const struct net_device *net_dev, const struct qm_fd *fd)
cpu_relax();
}
+void count_ern(struct dpa_percpu_priv_s *percpu_priv,
+ const struct qm_mr_entry *msg)
+{
+ switch (msg->ern.rc & QM_MR_RC_MASK) {
+ case QM_MR_RC_CGR_TAILDROP:
+ percpu_priv->ern_cnt.cg_tdrop++;
+ break;
+ case QM_MR_RC_WRED:
+ percpu_priv->ern_cnt.wred++;
+ break;
+ case QM_MR_RC_ERROR:
+ percpu_priv->ern_cnt.err_cond++;
+ break;
+ case QM_MR_RC_ORPWINDOW_EARLY:
+ percpu_priv->ern_cnt.early_window++;
+ break;
+ case QM_MR_RC_ORPWINDOW_LATE:
+ percpu_priv->ern_cnt.late_window++;
+ break;
+ case QM_MR_RC_FQ_TAILDROP:
+ percpu_priv->ern_cnt.fq_tdrop++;
+ break;
+ case QM_MR_RC_ORPWINDOW_RETIRED:
+ percpu_priv->ern_cnt.fq_retired++;
+ break;
+ case QM_MR_RC_ORP_ZERO:
+ percpu_priv->ern_cnt.orp_zero++;
+ break;
+ }
+}
+
/* Turn on HW checksum computation for this outgoing frame.
* If the current protocol is not something we support in this regard
* (or if the stack has already computed the SW checksum), we do nothing.
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.h b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.h
index 160a018..262b9b4 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.h
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.h
@@ -100,6 +100,8 @@ void dpaa_eth_init_ports(struct mac_device *mac_dev,
struct device *dev);
void dpa_release_sgt(struct qm_sg_entry *sgt);
void dpa_fd_release(const struct net_device *net_dev, const struct qm_fd *fd);
+void count_ern(struct dpa_percpu_priv_s *percpu_priv,
+ const struct qm_mr_entry *msg);
int dpa_enable_tx_csum(struct dpa_priv_s *priv,
struct sk_buff *skb,
struct qm_fd *fd,
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c
index af83ac2c..b4c2cee 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_sg.c
@@ -673,6 +673,7 @@ int dpa_tx(struct sk_buff *skb, struct net_device *net_dev)
likely(skb_shinfo(skb)->nr_frags < DPA_SGT_MAX_ENTRIES)) {
/* Just create a S/G fd based on the skb */
err = skb_to_sg_fd(priv, skb, &fd);
+ percpu_priv->tx_frag_skbuffs++;
} else {
/* If the egress skb contains more fragments than we support
* we have no choice but to linearize it ourselves.
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
index fa8ba69..356857b 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
@@ -37,6 +37,43 @@
#include "mac.h"
#include "dpaa_eth_common.h"
+static const char dpa_stats_percpu[][ETH_GSTRING_LEN] = {
+ "interrupts",
+ "rx packets",
+ "tx packets",
+ "tx confirm",
+ "tx S/G",
+ "tx error",
+ "rx error",
+ "bp count"
+};
+
+static char dpa_stats_global[][ETH_GSTRING_LEN] = {
+ /* dpa rx errors */
+ "rx dma error",
+ "rx frame physical error",
+ "rx frame size error",
+ "rx header error",
+
+ /* demultiplexing errors */
+ "qman cg_tdrop",
+ "qman wred",
+ "qman error cond",
+ "qman early window",
+ "qman late window",
+ "qman fq tdrop",
+ "qman fq retired",
+ "qman orp disabled",
+
+ /* congestion related stats */
+ "congestion time (ms)",
+ "entered congestion",
+ "congested (0/1)"
+};
+
+#define DPA_STATS_PERCPU_LEN ARRAY_SIZE(dpa_stats_percpu)
+#define DPA_STATS_GLOBAL_LEN ARRAY_SIZE(dpa_stats_global)
+
static int dpa_get_settings(struct net_device *net_dev,
struct ethtool_cmd *et_cmd)
{
@@ -217,6 +254,149 @@ static int dpa_set_pauseparam(struct net_device *net_dev,
return err;
}
+static int dpa_get_sset_count(struct net_device *net_dev, int type)
+{
+ unsigned int total_stats, num_stats;
+
+ num_stats = num_online_cpus() + 1;
+ total_stats = num_stats * DPA_STATS_PERCPU_LEN + DPA_STATS_GLOBAL_LEN;
+
+ switch (type) {
+ case ETH_SS_STATS:
+ return total_stats;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void copy_stats(struct dpa_percpu_priv_s *percpu_priv, int num_cpus,
+ int crr_cpu, u64 bp_count, u64 *data)
+{
+ int num_values = num_cpus + 1;
+ int crr = 0;
+
+ /* update current CPU's stats and also add them to the total values */
+ data[crr * num_values + crr_cpu] = percpu_priv->in_interrupt;
+ data[crr++ * num_values + num_cpus] += percpu_priv->in_interrupt;
+
+ data[crr * num_values + crr_cpu] = percpu_priv->stats.rx_packets;
+ data[crr++ * num_values + num_cpus] += percpu_priv->stats.rx_packets;
+
+ data[crr * num_values + crr_cpu] = percpu_priv->stats.tx_packets;
+ data[crr++ * num_values + num_cpus] += percpu_priv->stats.tx_packets;
+
+ data[crr * num_values + crr_cpu] = percpu_priv->tx_confirm;
+ data[crr++ * num_values + num_cpus] += percpu_priv->tx_confirm;
+
+ data[crr * num_values + crr_cpu] = percpu_priv->tx_frag_skbuffs;
+ data[crr++ * num_values + num_cpus] += percpu_priv->tx_frag_skbuffs;
+
+ data[crr * num_values + crr_cpu] = percpu_priv->stats.tx_errors;
+ data[crr++ * num_values + num_cpus] += percpu_priv->stats.tx_errors;
+
+ data[crr * num_values + crr_cpu] = percpu_priv->stats.rx_errors;
+ data[crr++ * num_values + num_cpus] += percpu_priv->stats.rx_errors;
+
+ data[crr * num_values + crr_cpu] = bp_count;
+ data[crr++ * num_values + num_cpus] += bp_count;
+}
+
+static void dpa_get_ethtool_stats(struct net_device *net_dev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ u64 bp_count, cg_time, cg_num, cg_status;
+ struct dpa_percpu_priv_s *percpu_priv;
+ struct qm_mcr_querycgr query_cgr;
+ struct dpa_rx_errors rx_errors;
+ struct dpa_ern_cnt ern_cnt;
+ struct dpa_priv_s *priv;
+ unsigned int num_cpus, offset;
+ struct dpa_bp *dpa_bp;
+ int total_stats, i;
+
+ total_stats = dpa_get_sset_count(net_dev, ETH_SS_STATS);
+ priv = netdev_priv(net_dev);
+ dpa_bp = priv->dpa_bp;
+ num_cpus = num_online_cpus();
+ bp_count = 0;
+
+ memset(&rx_errors, 0, sizeof(struct dpa_rx_errors));
+ memset(&ern_cnt, 0, sizeof(struct dpa_ern_cnt));
+ memset(data, 0, total_stats * sizeof(u64));
+
+ for_each_online_cpu(i) {
+ percpu_priv = per_cpu_ptr(priv->percpu_priv, i);
+
+ if (dpa_bp->percpu_count)
+ bp_count = *(per_cpu_ptr(dpa_bp->percpu_count, i));
+
+ rx_errors.dme += percpu_priv->rx_errors.dme;
+ rx_errors.fpe += percpu_priv->rx_errors.fpe;
+ rx_errors.fse += percpu_priv->rx_errors.fse;
+ rx_errors.phe += percpu_priv->rx_errors.phe;
+
+ ern_cnt.cg_tdrop += percpu_priv->ern_cnt.cg_tdrop;
+ ern_cnt.wred += percpu_priv->ern_cnt.wred;
+ ern_cnt.err_cond += percpu_priv->ern_cnt.err_cond;
+ ern_cnt.early_window += percpu_priv->ern_cnt.early_window;
+ ern_cnt.late_window += percpu_priv->ern_cnt.late_window;
+ ern_cnt.fq_tdrop += percpu_priv->ern_cnt.fq_tdrop;
+ ern_cnt.fq_retired += percpu_priv->ern_cnt.fq_retired;
+ ern_cnt.orp_zero += percpu_priv->ern_cnt.orp_zero;
+
+ copy_stats(percpu_priv, num_cpus, i, bp_count, data);
+ }
+
+ offset = (num_cpus + 1) * DPA_STATS_PERCPU_LEN;
+ memcpy(data + offset, &rx_errors, sizeof(struct dpa_rx_errors));
+
+ offset += sizeof(struct dpa_rx_errors) / sizeof(u64);
+ memcpy(data + offset, &ern_cnt, sizeof(struct dpa_ern_cnt));
+
+ /* gather congestion related counters */
+ cg_num = 0;
+ cg_status = 0;
+ cg_time = jiffies_to_msecs(priv->cgr_data.congested_jiffies);
+ if (qman_query_cgr(&priv->cgr_data.cgr, &query_cgr) == 0) {
+ cg_num = priv->cgr_data.cgr_congested_count;
+ cg_status = query_cgr.cgr.cs;
+
+ /* reset congestion stats (like QMan API does */
+ priv->cgr_data.congested_jiffies = 0;
+ priv->cgr_data.cgr_congested_count = 0;
+ }
+
+ offset += sizeof(struct dpa_ern_cnt) / sizeof(u64);
+ data[offset++] = cg_time;
+ data[offset++] = cg_num;
+ data[offset++] = cg_status;
+}
+
+static void dpa_get_strings(struct net_device *net_dev, u32 stringset, u8 *data)
+{
+ unsigned int i, j, num_cpus, size;
+ char string_cpu[ETH_GSTRING_LEN];
+ u8 *strings;
+
+ strings = data;
+ num_cpus = num_online_cpus();
+ size = DPA_STATS_GLOBAL_LEN * ETH_GSTRING_LEN;
+
+ for (i = 0; i < DPA_STATS_PERCPU_LEN; i++) {
+ for (j = 0; j < num_cpus; j++) {
+ snprintf(string_cpu, ETH_GSTRING_LEN, "%s [CPU %d]",
+ dpa_stats_percpu[i], j);
+ memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+ strings += ETH_GSTRING_LEN;
+ }
+ snprintf(string_cpu, ETH_GSTRING_LEN, "%s [TOTAL]",
+ dpa_stats_percpu[i]);
+ memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+ strings += ETH_GSTRING_LEN;
+ }
+ memcpy(strings, dpa_stats_global, size);
+}
+
const struct ethtool_ops dpa_ethtool_ops = {
.get_settings = dpa_get_settings,
.set_settings = dpa_set_settings,
@@ -227,4 +407,7 @@ const struct ethtool_ops dpa_ethtool_ops = {
.get_pauseparam = dpa_get_pauseparam,
.set_pauseparam = dpa_set_pauseparam,
.get_link = ethtool_op_get_link,
+ .get_sset_count = dpa_get_sset_count,
+ .get_ethtool_stats = dpa_get_ethtool_stats,
+ .get_strings = dpa_get_strings,
};
--
1.7.11.7
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