[dpdk-dev] [PATCH v3] net/ixgbe: config VLAN strip on the fly

[Wei Dai <wei.dai@intel.com>]

The old ixgbe_vlan_offload_set() is called by
rte_eth_dev_set_vlan_offload() which is meant to config VLAN
strip/filter/extend on all queues.
This old fucntion is also called by rte_eth_dev_start()/ixgbe_dev_start()
which need support per-queue VALN strip on only parts of queues.
So add new function ixgbe_vlan_offload_config() = old
ixgbe_vlan_offload_set().
New ixgbe_vlan_offload_set =  codes to align VLAN strip flags on all
queues with port level setting + ixgbe_vlan_offload_configure().

Signed-off-by: Wei Dai <wei.dai@intel.com>
Signed-off-by: Yanglong Wu <yanglong.wu@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 69 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 63 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 7219f02..deb9baa 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -189,6 +189,7 @@ static void ixgbe_vlan_hw_strip_bitmap_set(struct rte_eth_dev *dev,
 		uint16_t queue, bool on);
 static void ixgbe_vlan_strip_queue_set(struct rte_eth_dev *dev, uint16_t queue,
 		int on);
+static int ixgbe_vlan_offload_config(struct rte_eth_dev *dev, int mask);
 static int ixgbe_vlan_offload_set(struct rte_eth_dev *dev, int mask);
 static void ixgbe_vlan_hw_strip_enable(struct rte_eth_dev *dev, uint16_t queue);
 static void ixgbe_vlan_hw_strip_disable(struct rte_eth_dev *dev, uint16_t queue);
@@ -246,6 +247,7 @@ static int ixgbevf_vlan_filter_set(struct rte_eth_dev *dev,
 		uint16_t vlan_id, int on);
 static void ixgbevf_vlan_strip_queue_set(struct rte_eth_dev *dev,
 		uint16_t queue, int on);
+static int ixgbevf_vlan_offload_config(struct rte_eth_dev *dev, int mask);
 static int ixgbevf_vlan_offload_set(struct rte_eth_dev *dev, int mask);
 static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on);
 static int ixgbevf_dev_rx_queue_intr_enable(struct rte_eth_dev *dev,
@@ -1974,10 +1976,13 @@ ixgbe_vlan_hw_strip_bitmap_set(struct rte_eth_dev *dev, uint16_t queue, bool on)
 
 	rxq = dev->data->rx_queues[queue];
 
-	if (on)
+	if (on) {
 		rxq->vlan_flags = PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
-	else
+		rxq->offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
+	} else {
 		rxq->vlan_flags = PKT_RX_VLAN;
+		rxq->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
+	}
 }
 
 static void
@@ -2130,7 +2135,7 @@ ixgbe_vlan_hw_strip_config(struct rte_eth_dev *dev)
 }
 
 static int
-ixgbe_vlan_offload_set(struct rte_eth_dev *dev, int mask)
+ixgbe_vlan_offload_config(struct rte_eth_dev *dev, int mask)
 {
 	struct rte_eth_rxmode *rxmode;
 	rxmode = &dev->data->dev_conf.rxmode;
@@ -2156,6 +2161,32 @@ ixgbe_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 	return 0;
 }
 
+static int
+ixgbe_vlan_offload_set(struct rte_eth_dev *dev, int mask)
+{
+	uint16_t i;
+	struct rte_eth_rxmode *rxmode;
+	struct ixgbe_rx_queue *rxq;
+
+	if (mask & ETH_VLAN_STRIP_MASK) {
+		rxmode = &dev->data->dev_conf.rxmode;
+		if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
+			for (i = 0; i < dev->data->nb_rx_queues; i++) {
+				rxq = dev->data->rx_queues[i];
+				rxq->offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
+			}
+		else
+			for (i = 0; i < dev->data->nb_rx_queues; i++) {
+				rxq = dev->data->rx_queues[i];
+				rxq->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
+			}
+	}
+
+	ixgbe_vlan_offload_config(dev, mask);
+
+	return 0;
+}
+
 static void
 ixgbe_vmdq_vlan_hw_filter_enable(struct rte_eth_dev *dev)
 {
@@ -2577,7 +2608,7 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
 
 	mask = ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK |
 		ETH_VLAN_EXTEND_MASK;
-	err = ixgbe_vlan_offload_set(dev, mask);
+	err = ixgbe_vlan_offload_config(dev, mask);
 	if (err) {
 		PMD_INIT_LOG(ERR, "Unable to set VLAN offload");
 		goto error;
@@ -5022,7 +5053,7 @@ ixgbevf_dev_start(struct rte_eth_dev *dev)
 	/* Set HW strip */
 	mask = ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK |
 		ETH_VLAN_EXTEND_MASK;
-	err = ixgbevf_vlan_offload_set(dev, mask);
+	err = ixgbevf_vlan_offload_config(dev, mask);
 	if (err) {
 		PMD_INIT_LOG(ERR, "Unable to set VLAN offload (%d)", err);
 		ixgbe_dev_clear_queues(dev);
@@ -5220,7 +5251,7 @@ ixgbevf_vlan_strip_queue_set(struct rte_eth_dev *dev, uint16_t queue, int on)
 }
 
 static int
-ixgbevf_vlan_offload_set(struct rte_eth_dev *dev, int mask)
+ixgbevf_vlan_offload_config(struct rte_eth_dev *dev, int mask)
 {
 	struct ixgbe_rx_queue *rxq;
 	uint16_t i;
@@ -5238,6 +5269,32 @@ ixgbevf_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 	return 0;
 }
 
+static int
+ixgbevf_vlan_offload_set(struct rte_eth_dev *dev, int mask)
+{
+	uint16_t i;
+	struct rte_eth_rxmode *rxmode;
+	struct ixgbe_rx_queue *rxq;
+
+	if (mask & ETH_VLAN_STRIP_MASK) {
+		rxmode = &dev->data->dev_conf.rxmode;
+		if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
+			for (i = 0; i < dev->data->nb_rx_queues; i++) {
+				rxq = dev->data->rx_queues[i];
+				rxq->offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
+			}
+		else
+			for (i = 0; i < dev->data->nb_rx_queues; i++) {
+				rxq = dev->data->rx_queues[i];
+				rxq->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
+			}
+
+		ixgbevf_vlan_offload_config(dev, mask);
+	}
+
+	return 0;
+}
+
 int
 ixgbe_vt_check(struct ixgbe_hw *hw)
 {
-- 
2.7.5