[dpdk-dev] [PATCH] ethdev: save VLAN filter setting

[Gaetan Rivet <gaetan.rivet@6wind.com>]

In order to be able to replicate a configuration onto a second port,
device configuration should be fully described and available.
Other configuration items (i.e. MAC addresses) are stored within
rte_eth_dev_data, but not this one.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---

I'm removing this patch from the fail-safe series, as it stands on its own.

 lib/librte_ether/rte_ethdev.c | 19 ++++++++++++++++++-
 lib/librte_ether/rte_ethdev.h | 10 ++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 838ace3..76179fd 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1981,6 +1981,7 @@ int
 rte_eth_dev_vlan_filter(uint8_t port_id, uint16_t vlan_id, int on)
 {
 	struct rte_eth_dev *dev;
+	int ret;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
 	dev = &rte_eth_devices[port_id];
@@ -1996,7 +1997,23 @@ rte_eth_dev_vlan_filter(uint8_t port_id, uint16_t vlan_id, int on)
 	}
 	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->vlan_filter_set, -ENOTSUP);
 
-	return (*dev->dev_ops->vlan_filter_set)(dev, vlan_id, on);
+	ret = (*dev->dev_ops->vlan_filter_set)(dev, vlan_id, on);
+	if (ret == 0) {
+		struct rte_vlan_filter_conf *vfc;
+		int vidx;
+		int vbit;
+
+		vfc = &dev->data->vlan_filter_conf;
+		vidx = vlan_id / 64;
+		vbit = vlan_id % 64;
+
+		if (on)
+			vfc->ids[vidx] |= UINT64_C(1) << vbit;
+		else
+			vfc->ids[vidx] &= ~(UINT64_C(1) << vbit);
+	}
+
+	return ret;
 }
 
 int
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 5093436..93182b8 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -374,6 +374,14 @@ enum rte_vlan_type {
 };
 
 /**
+ * A structure used to describe a vlan filter.
+ * If the bit corresponding to a VID is set, such VID is on.
+ */
+struct rte_vlan_filter_conf {
+	uint64_t ids[64];
+};
+
+/**
  * A structure used to configure the Receive Side Scaling (RSS) feature
  * of an Ethernet port.
  * If not NULL, the *rss_key* pointer of the *rss_conf* structure points
@@ -1674,6 +1682,8 @@ struct rte_eth_dev_data {
 	uint32_t dev_flags; /**< Capabilities */
 	enum rte_kernel_driver kdrv;    /**< Kernel driver passthrough */
 	int numa_node;  /**< NUMA node connection */
+	struct rte_vlan_filter_conf vlan_filter_conf;
+	/**< VLAN filter configuration. */
 };
 
 /** Device supports hotplug detach */
-- 
2.1.4