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98 lines
2.5 KiB
98 lines
2.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Shared Memory Communications over RDMA (SMC-R) and RoCE |
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* |
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* Definitions for the SMC module (socket related) |
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* |
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* Copyright IBM Corp. 2016 |
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* |
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* Author(s): Ursula Braun <[email protected]> |
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*/ |
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#ifndef _SMC_H |
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#define _SMC_H |
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#define SMC_MAX_PNETID_LEN 16 /* Max. length of PNET id */ |
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struct smc_hashinfo { |
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rwlock_t lock; |
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struct hlist_head ht; |
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}; |
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int smc_hash_sk(struct sock *sk); |
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void smc_unhash_sk(struct sock *sk); |
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/* SMCD/ISM device driver interface */ |
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struct smcd_dmb { |
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u64 dmb_tok; |
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u64 rgid; |
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u32 dmb_len; |
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u32 sba_idx; |
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u32 vlan_valid; |
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u32 vlan_id; |
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void *cpu_addr; |
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dma_addr_t dma_addr; |
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}; |
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#define ISM_EVENT_DMB 0 |
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#define ISM_EVENT_GID 1 |
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#define ISM_EVENT_SWR 2 |
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#define ISM_RESERVED_VLANID 0x1FFF |
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#define ISM_ERROR 0xFFFF |
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struct smcd_event { |
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u32 type; |
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u32 code; |
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u64 tok; |
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u64 time; |
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u64 info; |
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}; |
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struct smcd_dev; |
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struct smcd_ops { |
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int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid, |
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u32 vid); |
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int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb); |
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int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb); |
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int (*add_vlan_id)(struct smcd_dev *dev, u64 vlan_id); |
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int (*del_vlan_id)(struct smcd_dev *dev, u64 vlan_id); |
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int (*set_vlan_required)(struct smcd_dev *dev); |
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int (*reset_vlan_required)(struct smcd_dev *dev); |
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int (*signal_event)(struct smcd_dev *dev, u64 rgid, u32 trigger_irq, |
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u32 event_code, u64 info); |
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int (*move_data)(struct smcd_dev *dev, u64 dmb_tok, unsigned int idx, |
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bool sf, unsigned int offset, void *data, |
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unsigned int size); |
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void (*get_system_eid)(struct smcd_dev *dev, u8 **eid); |
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u16 (*get_chid)(struct smcd_dev *dev); |
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}; |
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struct smcd_dev { |
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const struct smcd_ops *ops; |
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struct device dev; |
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void *priv; |
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u64 local_gid; |
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struct list_head list; |
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spinlock_t lock; |
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struct smc_connection **conn; |
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struct list_head vlan; |
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struct workqueue_struct *event_wq; |
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u8 pnetid[SMC_MAX_PNETID_LEN]; |
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bool pnetid_by_user; |
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struct list_head lgr_list; |
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spinlock_t lgr_lock; |
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atomic_t lgr_cnt; |
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wait_queue_head_t lgrs_deleted; |
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u8 going_away : 1; |
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}; |
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struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name, |
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const struct smcd_ops *ops, int max_dmbs); |
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int smcd_register_dev(struct smcd_dev *smcd); |
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void smcd_unregister_dev(struct smcd_dev *smcd); |
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void smcd_free_dev(struct smcd_dev *smcd); |
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void smcd_handle_event(struct smcd_dev *dev, struct smcd_event *event); |
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void smcd_handle_irq(struct smcd_dev *dev, unsigned int bit); |
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#endif /* _SMC_H */
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