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/*
*------------------------------------------------------------------
* Copyright (c) 2018 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#ifndef _RDMA_H_
#define _RDMA_H_
#include <infiniband/verbs.h>
#include <vlib/log.h>
#include <vlib/pci/pci.h>
#include <vnet/interface.h>
#include <vnet/ethernet/mac_address.h>
#include <rdma/rdma_mlx5dv.h>
#define foreach_rdma_device_flags \
_(0, ERROR, "error") \
_(1, ADMIN_UP, "admin-up") \
_(2, LINK_UP, "link-up") \
_(3, PROMISC, "promiscuous") \
_(4, MLX5DV, "mlx5dv")
enum
{
#define _(a, b, c) RDMA_DEVICE_F_##b = (1 << a),
foreach_rdma_device_flags
#undef _
};
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
struct ibv_cq *cq;
struct ibv_wq *wq;
u32 *bufs;
u32 size;
u32 head;
u32 tail;
u32 cq_ci;
u16 log2_cq_size;
u16 n_mini_cqes;
u16 n_mini_cqes_left;
u16 last_cqe_flags;
mlx5dv_cqe_t *cqes;
mlx5dv_rwq_t *wqes;
volatile u32 *wq_db;
volatile u32 *cq_db;
u32 cqn;
u32 wqe_cnt;
u32 wq_stride;
} rdma_rxq_t;
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
clib_spinlock_t lock;
struct ibv_cq *cq;
struct ibv_qp *qp;
u32 *bufs;
u32 size;
u32 head;
u32 tail;
} rdma_txq_t;
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/* following fields are accessed in datapath */
rdma_rxq_t *rxqs;
rdma_txq_t *txqs;
u32 flags;
u32 per_interface_next_index;
u32 sw_if_index;
u32 hw_if_index;
u32 lkey; /* cache of mr->lkey */
u8 pool; /* buffer pool index */
/* fields below are not accessed in datapath */
vlib_pci_device_info_t *pci;
u8 *name;
u8 *linux_ifname;
mac_address_t hwaddr;
u32 async_event_clib_file_index;
u32 dev_instance;
struct ibv_context *ctx;
struct ibv_pd *pd;
struct ibv_mr *mr;
struct ibv_qp *rx_qp;
struct ibv_rwq_ind_table *rx_rwq_ind_tbl;
struct ibv_flow *flow_ucast;
struct ibv_flow *flow_mcast;
clib_error_t *error;
} rdma_device_t;
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
union
{
u16 cqe_flags[VLIB_FRAME_SIZE];
u16x8 cqe_flags8[VLIB_FRAME_SIZE / 8];
u16x16 cqe_flags16[VLIB_FRAME_SIZE / 16];
};
vlib_buffer_t buffer_template;
} rdma_per_thread_data_t;
typedef struct
{
rdma_per_thread_data_t *per_thread_data;
rdma_device_t *devices;
vlib_log_class_t log_class;
u16 msg_id_base;
} rdma_main_t;
extern rdma_main_t rdma_main;
typedef enum
{
RDMA_MODE_AUTO = 0,
RDMA_MODE_IBV,
RDMA_MODE_DV,
} rdma_mode_t;
typedef struct
{
u8 *ifname;
u8 *name;
u32 rxq_size;
u32 txq_size;
u32 rxq_num;
rdma_mode_t mode;
/* return */
int rv;
u32 sw_if_index;
clib_error_t *error;
} rdma_create_if_args_t;
void rdma_create_if (vlib_main_t * vm, rdma_create_if_args_t * args);
void rdma_delete_if (vlib_main_t * vm, rdma_device_t * rd);
extern vlib_node_registration_t rdma_input_node;
extern vnet_device_class_t rdma_device_class;
format_function_t format_rdma_device;
format_function_t format_rdma_device_name;
format_function_t format_rdma_input_trace;
format_function_t format_rdma_rxq;
unformat_function_t unformat_rdma_create_if_args;
typedef struct
{
u32 next_index;
u32 hw_if_index;
u16 cqe_flags;
} rdma_input_trace_t;
#define foreach_rdma_tx_func_error \
_(NO_FREE_SLOTS, "no free tx slots")
typedef enum
{
#define _(f,s) RDMA_TX_ERROR_##f,
foreach_rdma_tx_func_error
#undef _
RDMA_TX_N_ERROR,
} rdma_tx_func_error_t;
#endif /* AVF_H */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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