ceph/src/seastar/dpdk/drivers/net/mlx4/mlx4_flow.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2017 6WIND S.A.
   5  *   Copyright 2017 Mellanox.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of 6WIND S.A. nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifndef RTE_PMD_MLX4_FLOW_H_
  35 #define RTE_PMD_MLX4_FLOW_H_
  36
  37 #include <stddef.h>
  38 #include <stdint.h>
  39 #include <sys/queue.h>
  40
  41 /* Verbs header. */
  42 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  43 #ifdef PEDANTIC
  44 #pragma GCC diagnostic ignored "-Wpedantic"
  45 #endif
  46 #include <infiniband/verbs.h>
  47 #ifdef PEDANTIC
  48 #pragma GCC diagnostic error "-Wpedantic"
  49 #endif
  50
  51 #include <rte_flow.h>
  52 #include <rte_flow_driver.h>
  53 #include <rte_byteorder.h>
  54
  55 #include "mlx4.h"
  56
  57 struct rte_flow {
  58         LIST_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
  59         struct ibv_flow *ibv_flow; /**< Verbs flow. */
  60         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
  61         struct ibv_qp *qp; /**< Verbs queue pair. */
  62 };
  63
  64 int
  65 mlx4_flow_validate(struct rte_eth_dev *dev,
  66                    const struct rte_flow_attr *attr,
  67                    const struct rte_flow_item items[],
  68                    const struct rte_flow_action actions[],
  69                    struct rte_flow_error *error);
  70
  71 struct rte_flow *
  72 mlx4_flow_create(struct rte_eth_dev *dev,
  73                  const struct rte_flow_attr *attr,
  74                  const struct rte_flow_item items[],
  75                  const struct rte_flow_action actions[],
  76                  struct rte_flow_error *error);
  77
  78 int
  79 mlx4_flow_destroy(struct rte_eth_dev *dev,
  80                   struct rte_flow *flow,
  81                   struct rte_flow_error *error);
  82
  83 int
  84 mlx4_flow_flush(struct rte_eth_dev *dev,
  85                 struct rte_flow_error *error);
  86
  87 /** Structure to pass to the conversion function. */
  88 struct mlx4_flow {
  89         struct ibv_flow_attr *ibv_attr; /**< Verbs attribute. */
  90         unsigned int offset; /**< Offset in bytes in the ibv_attr buffer. */
  91 };
  92
  93 struct mlx4_flow_action {
  94         uint32_t drop:1; /**< Target is a drop queue. */
  95         uint32_t queue:1; /**< Target is a receive queue. */
  96         uint32_t queue_id; /**< Identifier of the queue. */
  97 };
  98
  99 int mlx4_priv_flow_start(struct priv *priv);
 100 void mlx4_priv_flow_stop(struct priv *priv);
 101
 102 #endif /* RTE_PMD_MLX4_FLOW_H_ */