[dpdk-dev] [PATCH v3 09/11] net/sfc: prepare to add more xstats

[Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>]

From: Ivan Ilchenko <ivan.ilchenko@oktetlabs.ru>

Move getting MAC stats code that involves locking to separate functions
to simplify addition of new xstats.

Signed-off-by: Ivan Ilchenko <ivan.ilchenko@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
---
 drivers/net/sfc/sfc.h        |  4 ++
 drivers/net/sfc/sfc_ethdev.c | 73 ++++----------------------------
 drivers/net/sfc/sfc_port.c   | 80 ++++++++++++++++++++++++++++++++++++
 3 files changed, 92 insertions(+), 65 deletions(-)

diff --git a/drivers/net/sfc/sfc.h b/drivers/net/sfc/sfc.h
index 1594f934ba..58b8c2c2ad 100644
--- a/drivers/net/sfc/sfc.h
+++ b/drivers/net/sfc/sfc.h
@@ -423,6 +423,10 @@ void sfc_port_stop(struct sfc_adapter *sa);
 void sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 				struct rte_eth_link *link_info);
 int sfc_port_update_mac_stats(struct sfc_adapter *sa, boolean_t manual_update);
+int sfc_port_get_mac_stats(struct sfc_adapter *sa, struct rte_eth_xstat *xstats,
+			   unsigned int xstats_count, unsigned int *nb_written);
+int sfc_port_get_mac_stats_by_id(struct sfc_adapter *sa, const uint64_t *ids,
+				 uint64_t *values, unsigned int n);
 int sfc_port_reset_mac_stats(struct sfc_adapter *sa);
 int sfc_set_rx_mode(struct sfc_adapter *sa);
 int sfc_set_rx_mode_unchecked(struct sfc_adapter *sa);
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index f0567a71d0..dd7e5c253a 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -726,41 +726,17 @@ sfc_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 {
 	struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 	struct sfc_port *port = &sa->port;
-	uint64_t *mac_stats;
-	int rc;
-	unsigned int i;
-	int nstats = 0;
-
-	sfc_adapter_lock(sa);
+	unsigned int nb_written = 0;
+	unsigned int nb_supp;
 
 	if (unlikely(xstats == NULL)) {
-		nstats = port->mac_stats_nb_supported;
-		goto unlock;
-	}
-
-	rc = sfc_port_update_mac_stats(sa, B_FALSE);
-	if (rc != 0) {
-		SFC_ASSERT(rc > 0);
-		nstats = -rc;
-		goto unlock;
-	}
-
-	mac_stats = port->mac_stats_buf;
-
-	for (i = 0; i < EFX_MAC_NSTATS; ++i) {
-		if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
-			if (nstats < (int)xstats_count) {
-				xstats[nstats].id = nstats;
-				xstats[nstats].value = mac_stats[i];
-			}
-			nstats++;
-		}
+		sfc_adapter_lock(sa);
+		nb_supp = port->mac_stats_nb_supported;
+		sfc_adapter_unlock(sa);
+		return nb_supp;
 	}
 
-unlock:
-	sfc_adapter_unlock(sa);
-
-	return nstats;
+	return sfc_port_get_mac_stats(sa, xstats, xstats_count, &nb_written);
 }
 
 static int
@@ -798,44 +774,11 @@ sfc_xstats_get_by_id(struct rte_eth_dev *dev, const uint64_t *ids,
 		     uint64_t *values, unsigned int n)
 {
 	struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
-	struct sfc_port *port = &sa->port;
-	uint64_t *mac_stats;
-	unsigned int i;
-	int ret;
-	int rc;
 
 	if (unlikely(ids == NULL || values == NULL))
 		return -EINVAL;
 
-	sfc_adapter_lock(sa);
-
-	rc = sfc_port_update_mac_stats(sa, B_FALSE);
-	if (rc != 0) {
-		SFC_ASSERT(rc > 0);
-		ret = -rc;
-		goto unlock;
-	}
-
-	mac_stats = port->mac_stats_buf;
-
-	SFC_ASSERT(port->mac_stats_nb_supported <=
-		   RTE_DIM(port->mac_stats_by_id));
-
-	for (i = 0; i < n; i++) {
-		if (ids[i] < port->mac_stats_nb_supported) {
-			values[i] = mac_stats[port->mac_stats_by_id[ids[i]]];
-		} else {
-			ret = i;
-			goto unlock;
-		}
-	}
-
-	ret = n;
-
-unlock:
-	sfc_adapter_unlock(sa);
-
-	return ret;
+	return sfc_port_get_mac_stats_by_id(sa, ids, values, n);
 }
 
 static int
diff --git a/drivers/net/sfc/sfc_port.c b/drivers/net/sfc/sfc_port.c
index 8c432c15f5..f6689a17c0 100644
--- a/drivers/net/sfc/sfc_port.c
+++ b/drivers/net/sfc/sfc_port.c
@@ -636,3 +636,83 @@ sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 
 	link_info->link_autoneg = ETH_LINK_AUTONEG;
 }
+
+int
+sfc_port_get_mac_stats(struct sfc_adapter *sa, struct rte_eth_xstat *xstats,
+		       unsigned int xstats_count, unsigned int *nb_written)
+{
+	struct sfc_port *port = &sa->port;
+	uint64_t *mac_stats;
+	unsigned int i;
+	int nstats = 0;
+	int ret;
+
+	sfc_adapter_lock(sa);
+
+	ret = sfc_port_update_mac_stats(sa, B_FALSE);
+	if (ret != 0) {
+		SFC_ASSERT(ret > 0);
+		ret = -ret;
+		goto unlock;
+	}
+
+	mac_stats = port->mac_stats_buf;
+
+	for (i = 0; i < EFX_MAC_NSTATS; ++i) {
+		if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
+			if (nstats < (int)xstats_count) {
+				xstats[nstats].id = nstats;
+				xstats[nstats].value = mac_stats[i];
+				(*nb_written)++;
+			}
+			nstats++;
+		}
+	}
+	ret = nstats;
+
+unlock:
+	sfc_adapter_unlock(sa);
+
+	return ret;
+}
+
+int
+sfc_port_get_mac_stats_by_id(struct sfc_adapter *sa, const uint64_t *ids,
+			     uint64_t *values, unsigned int n)
+{
+	struct sfc_port *port = &sa->port;
+	uint64_t *mac_stats;
+	unsigned int i;
+	int ret;
+	int rc;
+
+	sfc_adapter_lock(sa);
+
+	rc = sfc_port_update_mac_stats(sa, B_FALSE);
+	if (rc != 0) {
+		SFC_ASSERT(rc > 0);
+		ret = -rc;
+		goto unlock;
+	}
+
+	mac_stats = port->mac_stats_buf;
+
+	SFC_ASSERT(port->mac_stats_nb_supported <=
+		   RTE_DIM(port->mac_stats_by_id));
+
+	for (i = 0; i < n; i++) {
+		if (ids[i] < port->mac_stats_nb_supported) {
+			values[i] = mac_stats[port->mac_stats_by_id[ids[i]]];
+		} else {
+			ret = i;
+			goto unlock;
+		}
+	}
+
+	ret = n;
+
+unlock:
+	sfc_adapter_unlock(sa);
+
+	return ret;
+}
-- 
2.30.2