[PATCH v4 11/24] net/bnxt: add support for xstats get by id

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

This patch adds support for xstats_get_by_id/xstats_get_names_by_id.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
--
v1->v2: incorporate review comments.
v2->v3: fix an issue observed while testing.
---
 drivers/net/bnxt/bnxt_ethdev.c | 11 +++++++++
 drivers/net/bnxt/bnxt_stats.c  | 51 ++++++++++++++++++++++++++++++++++++++++++
 drivers/net/bnxt/bnxt_stats.h  |  5 +++++
 3 files changed, 67 insertions(+)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 6e5cb8854..05e601b66 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1569,6 +1569,8 @@ static const struct eth_dev_ops bnxt_dev_ops = {
 	.txq_info_get = bnxt_txq_info_get_op,
 	.dev_led_on = bnxt_dev_led_on_op,
 	.dev_led_off = bnxt_dev_led_off_op,
+	.xstats_get_by_id = bnxt_dev_xstats_get_by_id_op,
+	.xstats_get_names_by_id = bnxt_dev_xstats_get_names_by_id_op,
 };
 
 static bool bnxt_vf_pciid(uint16_t id)
@@ -1648,6 +1650,9 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev)
 	rte_atomic64_init(&bp->rx_mbuf_alloc_fail);
 	bp->dev_stopped = 1;
 
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		goto skip_init;
+
 	if (bnxt_vf_pciid(pci_dev->id.device_id))
 		bp->flags |= BNXT_FLAG_VF;
 
@@ -1657,7 +1662,10 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev)
 			"Board initialization failed rc: %x\n", rc);
 		goto error;
 	}
+skip_init:
 	eth_dev->dev_ops = &bnxt_dev_ops;
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
 	eth_dev->rx_pkt_burst = &bnxt_recv_pkts;
 	eth_dev->tx_pkt_burst = &bnxt_xmit_pkts;
 
@@ -1882,6 +1890,9 @@ bnxt_dev_uninit(struct rte_eth_dev *eth_dev) {
 	struct bnxt *bp = eth_dev->data->dev_private;
 	int rc;
 
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return -EPERM;
+
 	bnxt_disable_int(bp);
 	bnxt_free_int(bp);
 	bnxt_free_mem(bp);
diff --git a/drivers/net/bnxt/bnxt_stats.c b/drivers/net/bnxt/bnxt_stats.c
index d7d0e35c1..225f98830 100644
--- a/drivers/net/bnxt/bnxt_stats.c
+++ b/drivers/net/bnxt/bnxt_stats.c
@@ -358,3 +358,54 @@ void bnxt_dev_xstats_reset_op(struct rte_eth_dev *eth_dev)
 	if (!(bp->flags & BNXT_FLAG_PORT_STATS))
 		RTE_LOG(ERR, PMD, "Operation not supported\n");
 }
+
+int bnxt_dev_xstats_get_by_id_op(struct rte_eth_dev *dev, const uint64_t *ids,
+		uint64_t *values, unsigned int limit)
+{
+	/* Account for the Tx drop pkts aka the Anti spoof counter */
+	const unsigned int stat_cnt = RTE_DIM(bnxt_rx_stats_strings) +
+				RTE_DIM(bnxt_tx_stats_strings) + 1;
+	struct rte_eth_xstat xstats[stat_cnt];
+	uint64_t values_copy[stat_cnt];
+	uint16_t i;
+
+	if (!ids)
+		return bnxt_dev_xstats_get_op(dev, xstats, stat_cnt);
+
+	bnxt_dev_xstats_get_by_id_op(dev, NULL, values_copy, stat_cnt);
+	for (i = 0; i < limit; i++) {
+		if (ids[i] >= stat_cnt) {
+			RTE_LOG(ERR, PMD, "id value isn't valid");
+			return -1;
+		}
+		values[i] = values_copy[ids[i]];
+	}
+	return stat_cnt;
+}
+
+int bnxt_dev_xstats_get_names_by_id_op(struct rte_eth_dev *dev,
+				struct rte_eth_xstat_name *xstats_names,
+				const uint64_t *ids, unsigned int limit)
+{
+	/* Account for the Tx drop pkts aka the Anti spoof counter */
+	const unsigned int stat_cnt = RTE_DIM(bnxt_rx_stats_strings) +
+				RTE_DIM(bnxt_tx_stats_strings) + 1;
+	struct rte_eth_xstat_name xstats_names_copy[stat_cnt];
+	uint16_t i;
+
+	if (!ids)
+		return bnxt_dev_xstats_get_names_op(dev, xstats_names,
+						    stat_cnt);
+	bnxt_dev_xstats_get_names_by_id_op(dev, xstats_names_copy, NULL,
+			stat_cnt);
+
+	for (i = 0; i < limit; i++) {
+		if (ids[i] >= stat_cnt) {
+			RTE_LOG(ERR, PMD, "id value isn't valid");
+			return -1;
+		}
+		strcpy(xstats_names[i].name,
+				xstats_names_copy[ids[i]].name);
+	}
+	return stat_cnt;
+}
diff --git a/drivers/net/bnxt/bnxt_stats.h b/drivers/net/bnxt/bnxt_stats.h
index b6d133ef2..daeb3d9b9 100644
--- a/drivers/net/bnxt/bnxt_stats.h
+++ b/drivers/net/bnxt/bnxt_stats.h
@@ -46,6 +46,11 @@ int bnxt_dev_xstats_get_names_op(__rte_unused struct rte_eth_dev *eth_dev,
 int bnxt_dev_xstats_get_op(struct rte_eth_dev *eth_dev,
 			   struct rte_eth_xstat *xstats, unsigned int n);
 void bnxt_dev_xstats_reset_op(struct rte_eth_dev *eth_dev);
+int bnxt_dev_xstats_get_by_id_op(struct rte_eth_dev *dev, const uint64_t *ids,
+				uint64_t *values, unsigned int limit);
+int bnxt_dev_xstats_get_names_by_id_op(struct rte_eth_dev *dev,
+				struct rte_eth_xstat_name *xstats_names,
+				const uint64_t *ids, unsigned int limit);
 
 struct bnxt_xstats_name_off {
 	char name[RTE_ETH_XSTATS_NAME_SIZE];
-- 
2.13.5 (Apple Git-94)