mlx5: support Rx VLAN stripping

[dpdk.git] / drivers / net / mlx5 / mlx5_vlan.c

diff --git a/drivers/net/mlx5/mlx5_vlan.c b/drivers/net/mlx5/mlx5_vlan.c
index 3a07ad1..fa9e3b8 100644 (file)
--- a/drivers/net/mlx5/mlx5_vlan.c
+++ b/drivers/net/mlx5/mlx5_vlan.c
@@ -48,6 +48,7 @@
 
 #include "mlx5_utils.h"
 #include "mlx5.h"
+#include "mlx5_autoconf.h"
 
 /**
  * Configure a VLAN filter.
@@ -127,3 +128,106 @@ mlx5_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
        assert(ret >= 0);
        return -ret;
 }
+
+/**
+ * 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);
+       }
+}