[dpdk-dev] [PATCH 1/7] vmxnet3: enable VLAN filtering

[Stephen Hemminger]

Support the VLAN filter functionality of the VMXNET3 interface.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
v2 -- incorporate comments from Yong Wang

 lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c | 105 +++++++++++++++++++++++++++++---
 lib/librte_pmd_vmxnet3/vmxnet3_ethdev.h |   3 +-
 lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c   |  31 +---------
 3 files changed, 101 insertions(+), 38 deletions(-)

diff --git a/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c b/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c
index 6068c60..23b4558 100644
--- a/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c
+++ b/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c
@@ -87,6 +87,12 @@ static void vmxnet3_dev_stats_get(struct rte_eth_dev *dev,
 				struct rte_eth_stats *stats);
 static void vmxnet3_dev_info_get(struct rte_eth_dev *dev,
 				struct rte_eth_dev_info *dev_info);
+static int vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev,
+				       uint16_t vid, int on);
+static void vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
+static void vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
+						int mask, int clear);
+
 #if PROCESS_SYS_EVENTS == 1
 static void vmxnet3_process_events(struct vmxnet3_hw *);
 #endif
@@ -113,6 +119,8 @@ static struct eth_dev_ops vmxnet3_eth_dev_ops = {
 	.link_update          = vmxnet3_dev_link_update,
 	.stats_get            = vmxnet3_dev_stats_get,
 	.dev_infos_get        = vmxnet3_dev_info_get,
+	.vlan_filter_set      = vmxnet3_dev_vlan_filter_set,
+	.vlan_offload_set     = vmxnet3_dev_vlan_offload_set,
 	.rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
 	.rx_queue_release     = vmxnet3_dev_rx_queue_release,
 	.tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
@@ -371,7 +379,7 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 	Vmxnet3_DSDevRead *devRead = &shared->devRead;
 	uint32_t *mac_ptr;
 	uint32_t val, i;
-	int ret;
+	int ret, mask;
 
 	shared->magic = VMXNET3_REV1_MAGIC;
 	devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
@@ -442,9 +450,6 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 	if (dev->data->dev_conf.rxmode.hw_ip_checksum)
 		devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 
-	if (dev->data->dev_conf.rxmode.hw_vlan_strip)
-		devRead->misc.uptFeatures |= VMXNET3_F_RXVLAN;
-
 	if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 		ret = vmxnet3_rss_configure(dev);
 		if (ret != VMXNET3_SUCCESS)
@@ -456,11 +461,14 @@ vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 		devRead->rssConfDesc.confPA  = hw->rss_confPA;
 	}
 
-	if (dev->data->dev_conf.rxmode.hw_vlan_filter) {
-		ret = vmxnet3_vlan_configure(dev);
-		if (ret != VMXNET3_SUCCESS)
-			return ret;
-	}
+	mask = 0;
+	if (dev->data->dev_conf.rxmode.hw_vlan_strip)
+		mask |= ETH_VLAN_STRIP_MASK;
+
+	if (dev->data->dev_conf.rxmode.hw_vlan_filter)
+		mask |= ETH_VLAN_FILTER_MASK;
+
+	vmxnet3_dev_vlan_offload_set_clear(dev, mask, 1);
 
 	PMD_INIT_LOG(DEBUG,
 		     "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
@@ -696,8 +704,13 @@ static void
 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 {
 	struct vmxnet3_hw *hw = dev->data->dev_private;
+	uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 
+	memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
 	vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 }
 
 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
@@ -705,8 +718,12 @@ static void
 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 {
 	struct vmxnet3_hw *hw = dev->data->dev_private;
+	uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 
+	memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 	vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 }
 
 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
@@ -727,6 +744,76 @@ vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 	vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
 }
 
+/* Enable/disable filter on vlan */
+static int
+vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
+{
+	struct vmxnet3_hw *hw = dev->data->dev_private;
+	struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
+	uint32_t *vf_table = rxConf->vfTable;
+
+	/* save state for restore */
+	if (on)
+		VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
+	else
+		VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
+
+	/* don't change active filter if in promiscious mode */
+	if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
+		return 0;
+
+	/* set in hardware */
+	if (on)
+		VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
+	else
+		VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+	return 0;
+}
+
+static void
+vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
+				   int mask, int clear)
+{
+	struct vmxnet3_hw *hw = dev->data->dev_private;
+	Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
+	uint32_t *vf_table = devRead->rxFilterConf.vfTable;
+
+	if (mask & ETH_VLAN_STRIP_MASK)
+		devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
+	else
+		devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_FEATURE);
+
+	if (mask & ETH_VLAN_FILTER_MASK) {
+		if (clear) {
+			memset(hw->shadow_vfta, 0,
+			       VMXNET3_VFT_TABLE_SIZE);
+			/* allow untagged pkts */
+			VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
+		}
+		memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
+	} else {
+		/* allow any pkts -- no filtering */
+		if (clear)
+			memset(hw->shadow_vfta, 0xff, VMXNET3_VFT_TABLE_SIZE);
+		memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
+	}
+
+	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
+			       VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+}
+
+static void
+vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
+{
+	vmxnet3_dev_vlan_offload_set_clear(dev, mask, 0);
+}
+
 #if PROCESS_SYS_EVENTS == 1
 static void
 vmxnet3_process_events(struct vmxnet3_hw *hw)
diff --git a/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.h b/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.h
index 09993cf..e97e3ca 100644
--- a/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.h
+++ b/lib/librte_pmd_vmxnet3/vmxnet3_ethdev.h
@@ -121,6 +121,8 @@ struct vmxnet3_hw {
 	VMXNET3_RSSConf		 *rss_conf;
 	uint64_t			 rss_confPA;
 	vmxnet3_mf_table_t   *mf_table;
+	uint32_t	      shadow_vfta[VMXNET3_VFT_SIZE];
+#define VMXNET3_VFT_TABLE_SIZE 	   (VMXNET3_VFT_SIZE * sizeof(uint32_t))
 };
 
 #define VMXNET3_GET_ADDR_LO(reg)   ((uint32_t)(reg))
@@ -173,7 +175,6 @@ int  vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 int vmxnet3_dev_rxtx_init(struct rte_eth_dev *dev);
 
 int vmxnet3_rss_configure(struct rte_eth_dev *dev);
-int vmxnet3_vlan_configure(struct rte_eth_dev *dev);
 
 uint16_t vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		uint16_t nb_pkts);
diff --git a/lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c b/lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c
index 4d8a010..5fe3de5 100644
--- a/lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c
+++ b/lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c
@@ -738,9 +738,9 @@ vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev,
 		return -EINVAL;
 	}
 
-	if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOOFFLOADS) !=
-	    ETH_TXQ_FLAGS_NOOFFLOADS) {
-		PMD_INIT_LOG(ERR, "TX not support offload function yet");
+	if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOXSUMS) !=
+	    ETH_TXQ_FLAGS_NOXSUMS) {
+		PMD_INIT_LOG(ERR, "TX no support for checksum offload yet");
 		return -EINVAL;
 	}
 
@@ -1045,28 +1045,3 @@ vmxnet3_rss_configure(struct rte_eth_dev *dev)
 
 	return VMXNET3_SUCCESS;
 }
-
-/*
- * Configure VLAN Filter feature
- */
-int
-vmxnet3_vlan_configure(struct rte_eth_dev *dev)
-{
-	uint8_t i;
-	struct vmxnet3_hw *hw = dev->data->dev_private;
-	uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
-
-	PMD_INIT_FUNC_TRACE();
-
-	/* Verify if this tag is already set */
-	for (i = 0; i < VMXNET3_VFT_SIZE; i++) {
-		/* Filter all vlan tags out by default */
-		vf_table[i] = 0;
-		/* To-Do: Provide another routine in dev_ops for user config */
-
-		PMD_INIT_LOG(DEBUG, "Registering VLAN portid: %"PRIu8" tag %u",
-					dev->data->port_id, vf_table[i]);
-	}
-
-	return VMXNET3_SUCCESS;
-}
-- 
2.1.4