linux/net/smc/smc_ism.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Shared Memory Communications Direct over ISM devices (SMC-D)
 *
 * SMC-D ISM device structure definitions.
 *
 * Copyright IBM Corp. 2018
 */

#ifndef SMCD_ISM_H
#define SMCD_ISM_H

#include <linux/uio.h>
#include <linux/types.h>
#include <linux/mutex.h>

#include "smc.h"

#define SMC_EMULATED_ISM_CHID_MASK …
#define SMC_ISM_IDENT_MASK …

struct smcd_dev_list { … };

extern struct smcd_dev_list	smcd_dev_list;	/* list of smcd devices */

struct smc_ism_vlanid { … };

struct smc_ism_seid { … };

struct smcd_dev;

int smc_ism_cantalk(struct smcd_gid *peer_gid, unsigned short vlan_id,
		    struct smcd_dev *dev);
void smc_ism_set_conn(struct smc_connection *conn);
void smc_ism_unset_conn(struct smc_connection *conn);
int smc_ism_get_vlan(struct smcd_dev *dev, unsigned short vlan_id);
int smc_ism_put_vlan(struct smcd_dev *dev, unsigned short vlan_id);
int smc_ism_register_dmb(struct smc_link_group *lgr, int buf_size,
			 struct smc_buf_desc *dmb_desc);
int smc_ism_unregister_dmb(struct smcd_dev *dev, struct smc_buf_desc *dmb_desc);
bool smc_ism_support_dmb_nocopy(struct smcd_dev *smcd);
int smc_ism_attach_dmb(struct smcd_dev *dev, u64 token,
		       struct smc_buf_desc *dmb_desc);
int smc_ism_detach_dmb(struct smcd_dev *dev, u64 token);
int smc_ism_signal_shutdown(struct smc_link_group *lgr);
void smc_ism_get_system_eid(u8 **eid);
u16 smc_ism_get_chid(struct smcd_dev *dev);
bool smc_ism_is_v2_capable(void);
void smc_ism_set_v2_capable(void);
int smc_ism_init(void);
void smc_ism_exit(void);
int smcd_nl_get_device(struct sk_buff *skb, struct netlink_callback *cb);

static inline int smc_ism_write(struct smcd_dev *smcd, u64 dmb_tok,
				unsigned int idx, bool sf, unsigned int offset,
				void *data, size_t len)
{ … }

static inline bool __smc_ism_is_emulated(u16 chid)
{ … }

static inline bool smc_ism_is_emulated(struct smcd_dev *smcd)
{ … }

static inline bool smc_ism_is_loopback(struct smcd_dev *smcd)
{ … }

#endif