[dpdk-dev] [PATCH v2 01/18] net/ixgbe: store SYN filter

[Wei Zhao <wei.zhao1@intel.com>]

Add support for storing SYN filter in SW.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
---

v2:
--synqf assignment location change
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 14 +++++++++++---
 drivers/net/ixgbe/ixgbe_ethdev.h |  2 ++
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index a25bac8..316e560 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1274,6 +1274,8 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev)
 	memset(filter_info->fivetuple_mask, 0,
 	       sizeof(uint32_t) * IXGBE_5TUPLE_ARRAY_SIZE);
 
+	/* initialize SYN filter */
+	filter_info->syn_info = 0;
 	return 0;
 }
 
@@ -5580,15 +5582,18 @@ ixgbe_syn_filter_set(struct rte_eth_dev *dev,
 			bool add)
 {
 	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct ixgbe_filter_info *filter_info =
+		IXGBE_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+	uint32_t syn_info;
 	uint32_t synqf;
 
 	if (filter->queue >= IXGBE_MAX_RX_QUEUE_NUM)
 		return -EINVAL;
 
-	synqf = IXGBE_READ_REG(hw, IXGBE_SYNQF);
+	syn_info = filter_info->syn_info;
 
 	if (add) {
-		if (synqf & IXGBE_SYN_FILTER_ENABLE)
+		if (syn_info & IXGBE_SYN_FILTER_ENABLE)
 			return -EINVAL;
 		synqf = (uint32_t)(((filter->queue << IXGBE_SYN_FILTER_QUEUE_SHIFT) &
 			IXGBE_SYN_FILTER_QUEUE) | IXGBE_SYN_FILTER_ENABLE);
@@ -5598,10 +5603,13 @@ ixgbe_syn_filter_set(struct rte_eth_dev *dev,
 		else
 			synqf &= ~IXGBE_SYN_FILTER_SYNQFP;
 	} else {
-		if (!(synqf & IXGBE_SYN_FILTER_ENABLE))
+		synqf = IXGBE_READ_REG(hw, IXGBE_SYNQF);
+		if (!(syn_info & IXGBE_SYN_FILTER_ENABLE))
 			return -ENOENT;
 		synqf &= ~(IXGBE_SYN_FILTER_QUEUE | IXGBE_SYN_FILTER_ENABLE);
 	}
+
+	filter_info->syn_info = synqf;
 	IXGBE_WRITE_REG(hw, IXGBE_SYNQF, synqf);
 	IXGBE_WRITE_FLUSH(hw);
 	return 0;
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
index 4ff6338..827026c 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.h
+++ b/drivers/net/ixgbe/ixgbe_ethdev.h
@@ -262,6 +262,8 @@ struct ixgbe_filter_info {
 	/* Bit mask for every used 5tuple filter */
 	uint32_t fivetuple_mask[IXGBE_5TUPLE_ARRAY_SIZE];
 	struct ixgbe_5tuple_filter_list fivetuple_list;
+	/* store the SYN filter info */
+	uint32_t syn_info;
 };
 
 /*
-- 
2.5.5