[dpdk-dev] [PATCH 13/23] net/sfc: support callback to check if mempool is supported

[Andrew Rybchenko]

The callback is a dummy yet since no Rx datapath provides its own
callback, so all pools are supported.

Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
Reviewed-by: Ivan Malov <ivan.malov at oktetlabs.ru>
---
 drivers/net/sfc/sfc_dp_rx.h  | 13 +++++++++++++
 drivers/net/sfc/sfc_ethdev.c | 16 ++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/drivers/net/sfc/sfc_dp_rx.h b/drivers/net/sfc/sfc_dp_rx.h
index db075dd..cb745e6 100644
--- a/drivers/net/sfc/sfc_dp_rx.h
+++ b/drivers/net/sfc/sfc_dp_rx.h
@@ -90,6 +90,18 @@ struct sfc_dp_rx_qcreate_info {
 typedef void (sfc_dp_rx_get_dev_info_t)(struct rte_eth_dev_info *dev_info);
 
 /**
+ * Test if an Rx datapath supports specific mempool ops.
+ *
+ * @param pool			The name of the pool operations to test.
+ *
+ * @return Check status.
+ * @retval	0		Best mempool ops choice.
+ * @retval	1		Mempool ops are supported.
+ * @retval	-ENOTSUP	Mempool ops not supported.
+ */
+typedef int (sfc_dp_rx_pool_ops_supported_t)(const char *pool);
+
+/**
  * Get size of receive and event queue rings by the number of Rx
  * descriptors and mempool configuration.
  *
@@ -182,6 +194,7 @@ struct sfc_dp_rx {
 #define SFC_DP_RX_FEAT_MULTI_PROCESS		0x2
 #define SFC_DP_RX_FEAT_TUNNELS			0x4
 	sfc_dp_rx_get_dev_info_t		*get_dev_info;
+	sfc_dp_rx_pool_ops_supported_t		*pool_ops_supported;
 	sfc_dp_rx_qsize_up_rings_t		*qsize_up_rings;
 	sfc_dp_rx_qcreate_t			*qcreate;
 	sfc_dp_rx_qdestroy_t			*qdestroy;
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 700e154..c3f37bc 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1630,6 +1630,21 @@ sfc_dev_filter_ctrl(struct rte_eth_dev *dev, enum rte_filter_type filter_type,
 	return -rc;
 }
 
+static int
+sfc_pool_ops_supported(struct rte_eth_dev *dev, const char *pool)
+{
+	struct sfc_adapter *sa = dev->data->dev_private;
+
+	/*
+	 * If Rx datapath does not provide callback to check mempool,
+	 * all pools are supported.
+	 */
+	if (sa->dp_rx->pool_ops_supported == NULL)
+		return 1;
+
+	return sa->dp_rx->pool_ops_supported(pool);
+}
+
 static const struct eth_dev_ops sfc_eth_dev_ops = {
 	.dev_configure			= sfc_dev_configure,
 	.dev_start			= sfc_dev_start,
@@ -1678,6 +1693,7 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
 	.fw_version_get			= sfc_fw_version_get,
 	.xstats_get_by_id		= sfc_xstats_get_by_id,
 	.xstats_get_names_by_id		= sfc_xstats_get_names_by_id,
+	.pool_ops_supported		= sfc_pool_ops_supported,
 };
 
 /**
-- 
2.7.4