[dpdk-dev] [PATCH v3 06/11] net/iavf: add flow director enabled switch value

[Leyi Rong <leyi.rong@intel.com>]

The commit adds fdir_enabled flag into iavf_rx_queue structure
to identify if fdir id is active. Rx data path can be benefit if
fdir id parsing is not needed, especially in vector path.

Signed-off-by: Leyi Rong <leyi.rong@intel.com>
---
 drivers/net/iavf/iavf.h      |  1 +
 drivers/net/iavf/iavf_rxtx.h | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/drivers/net/iavf/iavf.h b/drivers/net/iavf/iavf.h
index 67d625053..0cd0117c2 100644
--- a/drivers/net/iavf/iavf.h
+++ b/drivers/net/iavf/iavf.h
@@ -134,6 +134,7 @@ struct iavf_adapter {
 	bool tx_vec_allowed;
 	const uint32_t *ptype_tbl;
 	bool stopped;
+	uint16_t fdir_ref_cnt;
 };
 
 /* IAVF_DEV_PRIVATE_TO */
diff --git a/drivers/net/iavf/iavf_rxtx.h b/drivers/net/iavf/iavf_rxtx.h
index 290dd68c1..46ffbb738 100644
--- a/drivers/net/iavf/iavf_rxtx.h
+++ b/drivers/net/iavf/iavf_rxtx.h
@@ -103,6 +103,7 @@ struct iavf_rx_queue {
 
 	uint16_t port_id;        /* device port ID */
 	uint8_t crc_len;        /* 0 if CRC stripped, 4 otherwise */
+	uint8_t fdir_enabled;   /* 0 if FDIR disabled, 1 when enabled */
 	uint16_t queue_id;      /* Rx queue index */
 	uint16_t rx_buf_len;    /* The packet buffer size */
 	uint16_t rx_hdr_len;    /* The header buffer size */
@@ -490,6 +491,34 @@ void iavf_dump_tx_descriptor(const struct iavf_tx_queue *txq,
 	       tx_desc->cmd_type_offset_bsz);
 }
 
+#define FDIR_PROC_ENABLE_PER_QUEUE(ad, on) do { \
+	for (int i = 0; i < ad->eth_dev->data->nb_rx_queues; i++) { \
+		struct iavf_rx_queue *rxq = ad->eth_dev->data->rx_queues[i]; \
+		if (!rxq) \
+			continue; \
+		rxq->fdir_enabled = on; \
+	} \
+	PMD_DRV_LOG(DEBUG, "FDIR processing on RX set to %d", on); \
+} while (0)
+
+/* Enable/disable flow director Rx processing in data path. */
+static inline
+void iavf_fdir_rx_proc_enable(struct iavf_adapter *ad, bool on)
+{
+	if (on) {
+		/* enable flow director processing */
+		if (ad->fdir_ref_cnt++ == 0)
+			FDIR_PROC_ENABLE_PER_QUEUE(ad, on);
+	} else {
+		if (ad->fdir_ref_cnt >= 1) {
+			ad->fdir_ref_cnt--;
+
+			if (ad->fdir_ref_cnt == 0)
+				FDIR_PROC_ENABLE_PER_QUEUE(ad, on);
+		}
+	}
+}
+
 #ifdef RTE_LIBRTE_IAVF_DEBUG_DUMP_DESC
 #define IAVF_DUMP_RX_DESC(rxq, desc, rx_id) \
 	iavf_dump_rx_descriptor(rxq, desc, rx_id)
-- 
2.17.1