+
+/**
+ * Set/reset VLAN stripping for a specific queue.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param idx
+ * RX queue index.
+ * @param on
+ * Enable/disable VLAN stripping.
+ */
+static void
+priv_vlan_strip_queue_set(struct priv *priv, uint16_t idx, int on)
+{
+ struct rxq *rxq = (*priv->rxqs)[idx];
+#ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
+ struct ibv_exp_wq_attr mod;
+ uint16_t vlan_offloads =
+ (on ? IBV_EXP_RECEIVE_WQ_CVLAN_STRIP : 0) |
+ 0;
+ int err;
+
+ DEBUG("set VLAN offloads 0x%x for port %d queue %d",
+ vlan_offloads, rxq->port_id, idx);
+ mod = (struct ibv_exp_wq_attr){
+ .attr_mask = IBV_EXP_WQ_ATTR_VLAN_OFFLOADS,
+ .vlan_offloads = vlan_offloads,
+ };
+
+ err = ibv_exp_modify_wq(rxq->wq, &mod);
+ if (err) {
+ ERROR("%p: failed to modified stripping mode: %s",
+ (void *)priv, strerror(err));
+ return;
+ }
+
+#endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
+
+ /* Update related bits in RX queue. */
+ rxq->vlan_strip = !!on;
+}
+
+/**
+ * Callback to set/reset VLAN stripping for a specific queue.
+ *
+ * @param dev
+ * Pointer to Ethernet device structure.
+ * @param queue
+ * RX queue index.
+ * @param on
+ * Enable/disable VLAN stripping.
+ */
+void
+mlx5_vlan_strip_queue_set(struct rte_eth_dev *dev, uint16_t queue, int on)
+{
+ struct priv *priv = dev->data->dev_private;
+
+ /* Validate hw support */
+ if (!priv->hw_vlan_strip) {
+ ERROR("VLAN stripping is not supported");
+ return;
+ }
+
+ /* Validate queue number */
+ if (queue >= priv->rxqs_n) {
+ ERROR("VLAN stripping, invalid queue number %d", queue);
+ return;
+ }
+
+ priv_lock(priv);
+ priv_vlan_strip_queue_set(priv, queue, on);
+ priv_unlock(priv);
+}
+
+/**
+ * Callback to set/reset VLAN offloads for a port.
+ *
+ * @param dev
+ * Pointer to Ethernet device structure.
+ * @param mask
+ * VLAN offload bit mask.
+ */
+void
+mlx5_vlan_offload_set(struct rte_eth_dev *dev, int mask)
+{
+ struct priv *priv = dev->data->dev_private;
+ unsigned int i;
+
+ if (mask & ETH_VLAN_STRIP_MASK) {
+ int hw_vlan_strip = dev->data->dev_conf.rxmode.hw_vlan_strip;
+
+ if (!priv->hw_vlan_strip) {
+ ERROR("VLAN stripping is not supported");
+ return;
+ }
+
+ /* Run on every RX queue and set/reset VLAN stripping. */
+ priv_lock(priv);
+ for (i = 0; (i != priv->rxqs_n); i++)
+ priv_vlan_strip_queue_set(priv, i, hw_vlan_strip);
+ priv_unlock(priv);
+ }
+}