cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

smc.h (2513B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 *  Shared Memory Communications over RDMA (SMC-R) and RoCE
      4 *
      5 *  Definitions for the SMC module (socket related)
      6 *
      7 *  Copyright IBM Corp. 2016
      8 *
      9 *  Author(s):  Ursula Braun <ubraun@linux.vnet.ibm.com>
     10 */
     11#ifndef _SMC_H
     12#define _SMC_H
     13
     14#define SMC_MAX_PNETID_LEN	16	/* Max. length of PNET id */
     15
     16struct smc_hashinfo {
     17	rwlock_t lock;
     18	struct hlist_head ht;
     19};
     20
     21int smc_hash_sk(struct sock *sk);
     22void smc_unhash_sk(struct sock *sk);
     23
     24/* SMCD/ISM device driver interface */
     25struct smcd_dmb {
     26	u64 dmb_tok;
     27	u64 rgid;
     28	u32 dmb_len;
     29	u32 sba_idx;
     30	u32 vlan_valid;
     31	u32 vlan_id;
     32	void *cpu_addr;
     33	dma_addr_t dma_addr;
     34};
     35
     36#define ISM_EVENT_DMB	0
     37#define ISM_EVENT_GID	1
     38#define ISM_EVENT_SWR	2
     39
     40#define ISM_RESERVED_VLANID	0x1FFF
     41
     42#define ISM_ERROR	0xFFFF
     43
     44struct smcd_event {
     45	u32 type;
     46	u32 code;
     47	u64 tok;
     48	u64 time;
     49	u64 info;
     50};
     51
     52struct smcd_dev;
     53
     54struct smcd_ops {
     55	int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid,
     56				u32 vid);
     57	int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
     58	int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
     59	int (*add_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
     60	int (*del_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
     61	int (*set_vlan_required)(struct smcd_dev *dev);
     62	int (*reset_vlan_required)(struct smcd_dev *dev);
     63	int (*signal_event)(struct smcd_dev *dev, u64 rgid, u32 trigger_irq,
     64			    u32 event_code, u64 info);
     65	int (*move_data)(struct smcd_dev *dev, u64 dmb_tok, unsigned int idx,
     66			 bool sf, unsigned int offset, void *data,
     67			 unsigned int size);
     68	void (*get_system_eid)(struct smcd_dev *dev, u8 **eid);
     69	u16 (*get_chid)(struct smcd_dev *dev);
     70};
     71
     72struct smcd_dev {
     73	const struct smcd_ops *ops;
     74	struct device dev;
     75	void *priv;
     76	u64 local_gid;
     77	struct list_head list;
     78	spinlock_t lock;
     79	struct smc_connection **conn;
     80	struct list_head vlan;
     81	struct workqueue_struct *event_wq;
     82	u8 pnetid[SMC_MAX_PNETID_LEN];
     83	bool pnetid_by_user;
     84	struct list_head lgr_list;
     85	spinlock_t lgr_lock;
     86	atomic_t lgr_cnt;
     87	wait_queue_head_t lgrs_deleted;
     88	u8 going_away : 1;
     89};
     90
     91struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name,
     92				const struct smcd_ops *ops, int max_dmbs);
     93int smcd_register_dev(struct smcd_dev *smcd);
     94void smcd_unregister_dev(struct smcd_dev *smcd);
     95void smcd_free_dev(struct smcd_dev *smcd);
     96void smcd_handle_event(struct smcd_dev *dev, struct smcd_event *event);
     97void smcd_handle_irq(struct smcd_dev *dev, unsigned int bit);
     98#endif	/* _SMC_H */