[dpdk-dev] [PATCH v2 07/37] net/txgbe: support syn filter add and delete

[Jiawen Wu <jiawenwu@trustnetic.com>]

Support add and delete operations on syn filter.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
---
 drivers/net/txgbe/txgbe_ethdev.c | 70 ++++++++++++++++++++++++++++++++
 drivers/net/txgbe/txgbe_ethdev.h |  6 +++
 2 files changed, 76 insertions(+)

diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c
index 63285bee9..e5b56d60e 100644
--- a/drivers/net/txgbe/txgbe_ethdev.c
+++ b/drivers/net/txgbe/txgbe_ethdev.c
@@ -3512,6 +3512,44 @@ txgbe_set_queue_rate_limit(struct rte_eth_dev *dev,
 	return 0;
 }
 
+int
+txgbe_syn_filter_set(struct rte_eth_dev *dev,
+			struct rte_eth_syn_filter *filter,
+			bool add)
+{
+	struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
+	struct txgbe_filter_info *filter_info = TXGBE_DEV_FILTER(dev);
+	uint32_t syn_info;
+	uint32_t synqf;
+
+	if (filter->queue >= TXGBE_MAX_RX_QUEUE_NUM)
+		return -EINVAL;
+
+	syn_info = filter_info->syn_info;
+
+	if (add) {
+		if (syn_info & TXGBE_SYNCLS_ENA)
+			return -EINVAL;
+		synqf = (uint32_t)TXGBE_SYNCLS_QPID(filter->queue);
+		synqf |= TXGBE_SYNCLS_ENA;
+
+		if (filter->hig_pri)
+			synqf |= TXGBE_SYNCLS_HIPRIO;
+		else
+			synqf &= ~TXGBE_SYNCLS_HIPRIO;
+	} else {
+		synqf = rd32(hw, TXGBE_SYNCLS);
+		if (!(syn_info & TXGBE_SYNCLS_ENA))
+			return -ENOENT;
+		synqf &= ~(TXGBE_SYNCLS_QPID_MASK | TXGBE_SYNCLS_ENA);
+	}
+
+	filter_info->syn_info = synqf;
+	wr32(hw, TXGBE_SYNCLS, synqf);
+	txgbe_flush(hw);
+	return 0;
+}
+
 static inline enum txgbe_5tuple_protocol
 convert_protocol_type(uint8_t protocol_value)
 {
@@ -4422,11 +4460,28 @@ txgbe_ethertype_filter_restore(struct rte_eth_dev *dev)
 	}
 }
 
+/* restore SYN filter */
+static inline void
+txgbe_syn_filter_restore(struct rte_eth_dev *dev)
+{
+	struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
+	struct txgbe_filter_info *filter_info = TXGBE_DEV_FILTER(dev);
+	uint32_t synqf;
+
+	synqf = filter_info->syn_info;
+
+	if (synqf & TXGBE_SYNCLS_ENA) {
+		wr32(hw, TXGBE_SYNCLS, synqf);
+		txgbe_flush(hw);
+	}
+}
+
 static int
 txgbe_filter_restore(struct rte_eth_dev *dev)
 {
 	txgbe_ntuple_filter_restore(dev);
 	txgbe_ethertype_filter_restore(dev);
+	txgbe_syn_filter_restore(dev);
 
 	return 0;
 }
@@ -4462,6 +4517,21 @@ txgbe_clear_all_ethertype_filter(struct rte_eth_dev *dev)
 	}
 }
 
+/* remove the SYN filter */
+void
+txgbe_clear_syn_filter(struct rte_eth_dev *dev)
+{
+	struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
+	struct txgbe_filter_info *filter_info = TXGBE_DEV_FILTER(dev);
+
+	if (filter_info->syn_info & TXGBE_SYNCLS_ENA) {
+		filter_info->syn_info = 0;
+
+		wr32(hw, TXGBE_SYNCLS, 0);
+		txgbe_flush(hw);
+	}
+}
+
 static const struct eth_dev_ops txgbe_eth_dev_ops = {
 	.dev_configure              = txgbe_dev_configure,
 	.dev_infos_get              = txgbe_dev_info_get,
diff --git a/drivers/net/txgbe/txgbe_ethdev.h b/drivers/net/txgbe/txgbe_ethdev.h
index 980c4b450..d510e8c78 100644
--- a/drivers/net/txgbe/txgbe_ethdev.h
+++ b/drivers/net/txgbe/txgbe_ethdev.h
@@ -164,6 +164,8 @@ struct txgbe_filter_info {
 	/* Bit mask for every used 5tuple filter */
 	uint32_t fivetuple_mask[TXGBE_5TUPLE_ARRAY_SIZE];
 	struct txgbe_5tuple_filter_list fivetuple_list;
+	/* store the SYN filter info */
+	uint32_t syn_info;
 };
 
 /* The configuration of bandwidth */
@@ -320,6 +322,9 @@ int txgbe_add_del_ntuple_filter(struct rte_eth_dev *dev,
 int txgbe_add_del_ethertype_filter(struct rte_eth_dev *dev,
 			struct rte_eth_ethertype_filter *filter,
 			bool add);
+int txgbe_syn_filter_set(struct rte_eth_dev *dev,
+			struct rte_eth_syn_filter *filter,
+			bool add);
 
 void txgbe_set_ivar_map(struct txgbe_hw *hw, int8_t direction,
 			       uint8_t queue, uint8_t msix_vector);
@@ -343,6 +348,7 @@ uint32_t txgbe_convert_vm_rx_mask_to_val(uint16_t rx_mask, uint32_t orig_val);
 
 void txgbe_clear_all_ethertype_filter(struct rte_eth_dev *dev);
 void txgbe_clear_all_ntuple_filter(struct rte_eth_dev *dev);
+void txgbe_clear_syn_filter(struct rte_eth_dev *dev);
 
 int txgbe_set_vf_rate_limit(struct rte_eth_dev *dev, uint16_t vf,
 			    uint16_t tx_rate, uint64_t q_msk);
-- 
2.18.4