[mirror_ubuntu-bionic-kernel.git] / net / smc / smc_ib.h

/*
 * 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 <linux/interrupt.h>
#include <linux/if_ether.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_event_handler	event_handler;	/* global ib_event handler */
	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][ETH_ALEN];
						/* mac address per port*/
	union ib_gid		gid[SMC_MAX_PORTS]; /* gid per port */
	u8			initialized : 1; /* ib dev CQ, evthdl done */
	struct work_struct	port_event_work;
	unsigned long		port_event_mask;
};

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_buf_unmap(struct smc_ib_device *smcibdev, int bufsize,
		      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);
int smc_ib_ready_link(struct smc_link *lnk);
int smc_ib_modify_qp_rts(struct smc_link *lnk);
int smc_ib_modify_qp_reset(struct smc_link *lnk);
long smc_ib_setup_per_ibdev(struct smc_ib_device *smcibdev);


#endif
Commit	Line	Data
a4cf0443 UB	1	/*
	2	* Shared Memory Communications over RDMA (SMC-R) and RoCE
	3	*
	4	* Definitions for IB environment
	5	*
	6	* Copyright IBM Corp. 2016
	7	*
	8	* Author(s): Ursula Braun <Ursula Braun@linux.vnet.ibm.com>
	9	*/
	10
	11	#ifndef _SMC_IB_H
	12	#define _SMC_IB_H
	13
282ccf6e	14	#include <linux/interrupt.h>
143c0171	15	#include <linux/if_ether.h>
a4cf0443 UB	16	#include <rdma/ib_verbs.h>
	17
	18	#define SMC_MAX_PORTS 2 /* Max # of ports */
	19	#define SMC_GID_SIZE sizeof(union ib_gid)
	20
f38ba179 UB	21	#define SMC_IB_MAX_SEND_SGE 2
f38ba179 UB	22
a4cf0443 UB	23	struct smc_ib_devices { /* list of smc ib devices definition */
	24	struct list_head list;
	25	spinlock_t lock; /* protects list of smc ib devices */
	26	};
	27
	28	extern struct smc_ib_devices smc_ib_devices; /* list of smc ib devices */
	29
	30	struct smc_ib_device { /* ib-device infos for smc */
	31	struct list_head list;
	32	struct ib_device *ibdev;
	33	struct ib_port_attr pattr[SMC_MAX_PORTS]; /* ib dev. port attrs */
bd4ad577	34	struct ib_event_handler event_handler; /* global ib_event handler */
f38ba179 UB	35	struct ib_cq roce_cq_send; / send completion queue */
	36	struct ib_cq roce_cq_recv; / recv completion queue */
	37	struct tasklet_struct send_tasklet; /* called by send cq handler */
	38	struct tasklet_struct recv_tasklet; /* called by recv cq handler */
143c0171 UB	39	char mac[SMC_MAX_PORTS][ETH_ALEN];
143c0171 UB	40	/* mac address per port*/
a4cf0443 UB	41	union ib_gid gid[SMC_MAX_PORTS]; /* gid per port */
a4cf0443 UB	42	u8 initialized : 1; /* ib dev CQ, evthdl done */
bd4ad577 UB	43	struct work_struct port_event_work;
bd4ad577 UB	44	unsigned long port_event_mask;
a4cf0443 UB	45	};
a4cf0443 UB	46
cd6851f3	47	struct smc_buf_desc;
f38ba179	48	struct smc_link;
cd6851f3	49
a4cf0443 UB	50	int smc_ib_register_client(void) __init;
	51	void smc_ib_unregister_client(void);
	52	bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport);
	53	int smc_ib_remember_port_attr(struct smc_ib_device *smcibdev, u8 ibport);
cd6851f3 UB	54	int smc_ib_buf_map(struct smc_ib_device *smcibdev, int buf_size,
	55	struct smc_buf_desc *buf_slot,
	56	enum dma_data_direction data_direction);
bd4ad577 UB	57	void smc_ib_buf_unmap(struct smc_ib_device *smcibdev, int bufsize,
	58	struct smc_buf_desc *buf_slot,
	59	enum dma_data_direction data_direction);
f38ba179 UB	60	void smc_ib_dealloc_protection_domain(struct smc_link *lnk);
	61	int smc_ib_create_protection_domain(struct smc_link *lnk);
	62	void smc_ib_destroy_queue_pair(struct smc_link *lnk);
	63	int smc_ib_create_queue_pair(struct smc_link *lnk);
bd4ad577 UB	64	int smc_ib_ready_link(struct smc_link *lnk);
	65	int smc_ib_modify_qp_rts(struct smc_link *lnk);
	66	int smc_ib_modify_qp_reset(struct smc_link *lnk);
	67	long smc_ib_setup_per_ibdev(struct smc_ib_device *smcibdev);
	68
a4cf0443 UB	69
a4cf0443 UB	70	#endif