forked from Minki/linux
f38ba179c6
The base containers for RDMA transport are work requests and completion queue entries processed through Infiniband verbs: * allocate and initialize these areas * map these areas to DMA * implement the basic communication consisting of work request posting and receival of completion queue events Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
|
|
* Shared Memory Communications over RDMA (SMC-R) and RoCE
|
|
*
|
|
* Definitions for IB environment
|
|
*
|
|
* Copyright IBM Corp. 2016
|
|
*
|
|
* Author(s): Ursula Braun <Ursula Braun@linux.vnet.ibm.com>
|
|
*/
|
|
|
|
#ifndef _SMC_IB_H
|
|
#define _SMC_IB_H
|
|
|
|
#include <rdma/ib_verbs.h>
|
|
|
|
#define SMC_MAX_PORTS 2 /* Max # of ports */
|
|
#define SMC_GID_SIZE sizeof(union ib_gid)
|
|
|
|
#define SMC_IB_MAX_SEND_SGE 2
|
|
|
|
struct smc_ib_devices { /* list of smc ib devices definition */
|
|
struct list_head list;
|
|
spinlock_t lock; /* protects list of smc ib devices */
|
|
};
|
|
|
|
extern struct smc_ib_devices smc_ib_devices; /* list of smc ib devices */
|
|
|
|
struct smc_ib_device { /* ib-device infos for smc */
|
|
struct list_head list;
|
|
struct ib_device *ibdev;
|
|
struct ib_port_attr pattr[SMC_MAX_PORTS]; /* ib dev. port attrs */
|
|
struct ib_cq *roce_cq_send; /* send completion queue */
|
|
struct ib_cq *roce_cq_recv; /* recv completion queue */
|
|
struct tasklet_struct send_tasklet; /* called by send cq handler */
|
|
struct tasklet_struct recv_tasklet; /* called by recv cq handler */
|
|
char mac[SMC_MAX_PORTS][6]; /* mac address per port*/
|
|
union ib_gid gid[SMC_MAX_PORTS]; /* gid per port */
|
|
u8 initialized : 1; /* ib dev CQ, evthdl done */
|
|
};
|
|
|
|
struct smc_buf_desc;
|
|
struct smc_link;
|
|
|
|
int smc_ib_register_client(void) __init;
|
|
void smc_ib_unregister_client(void);
|
|
bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport);
|
|
int smc_ib_remember_port_attr(struct smc_ib_device *smcibdev, u8 ibport);
|
|
int smc_ib_buf_map(struct smc_ib_device *smcibdev, int buf_size,
|
|
struct smc_buf_desc *buf_slot,
|
|
enum dma_data_direction data_direction);
|
|
void smc_ib_dealloc_protection_domain(struct smc_link *lnk);
|
|
int smc_ib_create_protection_domain(struct smc_link *lnk);
|
|
void smc_ib_destroy_queue_pair(struct smc_link *lnk);
|
|
int smc_ib_create_queue_pair(struct smc_link *lnk);
|
|
|
|
#endif
|