/* SPDX-License-Identifier: GPL-2.0 *//* *  Shared Memory Communications over RDMA (SMC-R) and RoCE * *  Definitions for the SMC module (socket related) * *  Copyright IBM Corp. 2016 * *  Author(s):  Ursula Braun <ubraun@linux.vnet.ibm.com> */#ifndef _SMC_H#define _SMC_H #define SMC_MAX_PNETID_LEN	16	/* Max. length of PNET id */ struct smc_hashinfo {	rwlock_t lock;	struct hlist_head ht;}; int smc_hash_sk(struct sock *sk);void smc_unhash_sk(struct sock *sk); /* SMCD/ISM device driver interface */struct smcd_dmb {	u64 dmb_tok;	u64 rgid;	u32 dmb_len;	u32 sba_idx;	u32 vlan_valid;	u32 vlan_id;	void *cpu_addr;	dma_addr_t dma_addr;}; #define ISM_EVENT_DMB	0#define ISM_EVENT_GID	1#define ISM_EVENT_SWR	2 #define ISM_ERROR	0xFFFF struct smcd_event {	u32 type;	u32 code;	u64 tok;	u64 time;	u64 info;}; struct smcd_dev; struct smcd_ops {	int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid,				u32 vid);	int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);	int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);	int (*add_vlan_id)(struct smcd_dev *dev, u64 vlan_id);	int (*del_vlan_id)(struct smcd_dev *dev, u64 vlan_id);	int (*set_vlan_required)(struct smcd_dev *dev);	int (*reset_vlan_required)(struct smcd_dev *dev);	int (*signal_event)(struct smcd_dev *dev, u64 rgid, u32 trigger_irq,			    u32 event_code, u64 info);	int (*move_data)(struct smcd_dev *dev, u64 dmb_tok, unsigned int idx,			 bool sf, unsigned int offset, void *data,			 unsigned int size);}; struct smcd_dev {	const struct smcd_ops *ops;	struct device dev;	void *priv;	u64 local_gid;	struct list_head list;	spinlock_t lock;	struct smc_connection **conn;	struct list_head vlan;	struct workqueue_struct *event_wq;	u8 pnetid[SMC_MAX_PNETID_LEN];	bool pnetid_by_user;	struct list_head lgr_list;	spinlock_t lgr_lock;	atomic_t lgr_cnt;	wait_queue_head_t lgrs_deleted;	u8 going_away : 1;}; struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name,				const struct smcd_ops *ops, int max_dmbs);int smcd_register_dev(struct smcd_dev *smcd);void smcd_unregister_dev(struct smcd_dev *smcd);void smcd_free_dev(struct smcd_dev *smcd);void smcd_handle_event(struct smcd_dev *dev, struct smcd_event *event);void smcd_handle_irq(struct smcd_dev *dev, unsigned int bit);#endif	/* _SMC_H */