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authorNelio Laranjeiro <nelio.laranjeiro@6wind.com>2018-07-12 11:30:48 +0200
committerShahaf Shuler <shahafs@mellanox.com>2018-07-12 12:10:01 +0200
commit78be885295b86da2c208324f1e276e802812b60d (patch)
tree21cc351e784b2390ef997464831bd35bd6a0bd67 /drivers/net/mlx5/mlx5_rxq.c
parentb42c000e37a80112bdf5150fbccb645ae34e5a09 (diff)
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net/mlx5: handle drop queues as regular queues
Drop queues are essentially used in flows due to Verbs API, the information if the fate of the flow is a drop or not is already present in the flow. Due to this, drop queues can be fully mapped on regular queues. Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com> Acked-by: Yongseok Koh <yskoh@mellanox.com>
Diffstat (limited to 'drivers/net/mlx5/mlx5_rxq.c')
-rw-r--r--drivers/net/mlx5/mlx5_rxq.c232
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index fd0df17..d960daa 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1957,3 +1957,235 @@ mlx5_hrxq_ibv_verify(struct rte_eth_dev *dev)
}
return ret;
}
+
+/**
+ * Create a drop Rx queue Verbs object.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ *
+ * @return
+ * The Verbs object initialised, NULL otherwise and rte_errno is set.
+ */
+struct mlx5_rxq_ibv *
+mlx5_rxq_ibv_drop_new(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct ibv_cq *cq;
+ struct ibv_wq *wq = NULL;
+ struct mlx5_rxq_ibv *rxq;
+
+ if (priv->drop_queue.rxq)
+ return priv->drop_queue.rxq;
+ cq = mlx5_glue->create_cq(priv->ctx, 1, NULL, NULL, 0);
+ if (!cq) {
+ DEBUG("port %u cannot allocate CQ for drop queue",
+ dev->data->port_id);
+ rte_errno = errno;
+ goto error;
+ }
+ wq = mlx5_glue->create_wq(priv->ctx,
+ &(struct ibv_wq_init_attr){
+ .wq_type = IBV_WQT_RQ,
+ .max_wr = 1,
+ .max_sge = 1,
+ .pd = priv->pd,
+ .cq = cq,
+ });
+ if (!wq) {
+ DEBUG("port %u cannot allocate WQ for drop queue",
+ dev->data->port_id);
+ rte_errno = errno;
+ goto error;
+ }
+ rxq = rte_calloc(__func__, 1, sizeof(*rxq), 0);
+ if (!rxq) {
+ DEBUG("port %u cannot allocate drop Rx queue memory",
+ dev->data->port_id);
+ rte_errno = ENOMEM;
+ goto error;
+ }
+ rxq->cq = cq;
+ rxq->wq = wq;
+ priv->drop_queue.rxq = rxq;
+ return rxq;
+error:
+ if (wq)
+ claim_zero(mlx5_glue->destroy_wq(wq));
+ if (cq)
+ claim_zero(mlx5_glue->destroy_cq(cq));
+ return NULL;
+}
+
+/**
+ * Release a drop Rx queue Verbs object.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ *
+ * @return
+ * The Verbs object initialised, NULL otherwise and rte_errno is set.
+ */
+void
+mlx5_rxq_ibv_drop_release(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct mlx5_rxq_ibv *rxq = priv->drop_queue.rxq;
+
+ if (rxq->wq)
+ claim_zero(mlx5_glue->destroy_wq(rxq->wq));
+ if (rxq->cq)
+ claim_zero(mlx5_glue->destroy_cq(rxq->cq));
+ rte_free(rxq);
+ priv->drop_queue.rxq = NULL;
+}
+
+/**
+ * Create a drop indirection table.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ *
+ * @return
+ * The Verbs object initialised, NULL otherwise and rte_errno is set.
+ */
+struct mlx5_ind_table_ibv *
+mlx5_ind_table_ibv_drop_new(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct mlx5_ind_table_ibv *ind_tbl;
+ struct mlx5_rxq_ibv *rxq;
+ struct mlx5_ind_table_ibv tmpl;
+
+ rxq = mlx5_rxq_ibv_drop_new(dev);
+ if (!rxq)
+ return NULL;
+ tmpl.ind_table = mlx5_glue->create_rwq_ind_table
+ (priv->ctx,
+ &(struct ibv_rwq_ind_table_init_attr){
+ .log_ind_tbl_size = 0,
+ .ind_tbl = &rxq->wq,
+ .comp_mask = 0,
+ });
+ if (!tmpl.ind_table) {
+ DEBUG("port %u cannot allocate indirection table for drop"
+ " queue",
+ dev->data->port_id);
+ rte_errno = errno;
+ goto error;
+ }
+ ind_tbl = rte_calloc(__func__, 1, sizeof(*ind_tbl), 0);
+ if (!ind_tbl) {
+ rte_errno = ENOMEM;
+ goto error;
+ }
+ ind_tbl->ind_table = tmpl.ind_table;
+ return ind_tbl;
+error:
+ mlx5_rxq_ibv_drop_release(dev);
+ return NULL;
+}
+
+/**
+ * Release a drop indirection table.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ */
+void
+mlx5_ind_table_ibv_drop_release(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct mlx5_ind_table_ibv *ind_tbl = priv->drop_queue.hrxq->ind_table;
+
+ claim_zero(mlx5_glue->destroy_rwq_ind_table(ind_tbl->ind_table));
+ mlx5_rxq_ibv_drop_release(dev);
+ rte_free(ind_tbl);
+ priv->drop_queue.hrxq->ind_table = NULL;
+}
+
+/**
+ * Create a drop Rx Hash queue.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ *
+ * @return
+ * The Verbs object initialised, NULL otherwise and rte_errno is set.
+ */
+struct mlx5_hrxq *
+mlx5_hrxq_drop_new(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct mlx5_ind_table_ibv *ind_tbl;
+ struct ibv_qp *qp;
+ struct mlx5_hrxq *hrxq;
+
+ if (priv->drop_queue.hrxq) {
+ rte_atomic32_inc(&priv->drop_queue.hrxq->refcnt);
+ return priv->drop_queue.hrxq;
+ }
+ ind_tbl = mlx5_ind_table_ibv_drop_new(dev);
+ if (!ind_tbl)
+ return NULL;
+ qp = mlx5_glue->create_qp_ex(priv->ctx,
+ &(struct ibv_qp_init_attr_ex){
+ .qp_type = IBV_QPT_RAW_PACKET,
+ .comp_mask =
+ IBV_QP_INIT_ATTR_PD |
+ IBV_QP_INIT_ATTR_IND_TABLE |
+ IBV_QP_INIT_ATTR_RX_HASH,
+ .rx_hash_conf = (struct ibv_rx_hash_conf){
+ .rx_hash_function =
+ IBV_RX_HASH_FUNC_TOEPLITZ,
+ .rx_hash_key_len = rss_hash_default_key_len,
+ .rx_hash_key = rss_hash_default_key,
+ .rx_hash_fields_mask = 0,
+ },
+ .rwq_ind_tbl = ind_tbl->ind_table,
+ .pd = priv->pd
+ });
+ if (!qp) {
+ DEBUG("port %u cannot allocate QP for drop queue",
+ dev->data->port_id);
+ rte_errno = errno;
+ goto error;
+ }
+ hrxq = rte_calloc(__func__, 1, sizeof(*hrxq), 0);
+ if (!hrxq) {
+ DRV_LOG(WARNING,
+ "port %u cannot allocate memory for drop queue",
+ dev->data->port_id);
+ rte_errno = ENOMEM;
+ goto error;
+ }
+ hrxq->ind_table = ind_tbl;
+ hrxq->qp = qp;
+ priv->drop_queue.hrxq = hrxq;
+ rte_atomic32_set(&hrxq->refcnt, 1);
+ return hrxq;
+error:
+ if (ind_tbl)
+ mlx5_ind_table_ibv_drop_release(dev);
+ return NULL;
+}
+
+/**
+ * Release a drop hash Rx queue.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ */
+void
+mlx5_hrxq_drop_release(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct mlx5_hrxq *hrxq = priv->drop_queue.hrxq;
+
+ if (rte_atomic32_dec_and_test(&hrxq->refcnt)) {
+ claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
+ mlx5_ind_table_ibv_drop_release(dev);
+ rte_free(hrxq);
+ priv->drop_queue.hrxq = NULL;
+ }
+}