linux-imx

/* 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

​

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);