Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f16a7dd5 UB |
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 | ||
949d6b40 JK |
14 | #include <linux/device.h> |
15 | #include <linux/spinlock.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/wait.h> | |
89e7d2ba | 18 | #include "linux/ism.h" |
949d6b40 JK |
19 | |
20 | struct sock; | |
21 | ||
0afff91c UB |
22 | #define SMC_MAX_PNETID_LEN 16 /* Max. length of PNET id */ |
23 | ||
f16a7dd5 UB |
24 | struct smc_hashinfo { |
25 | rwlock_t lock; | |
26 | struct hlist_head ht; | |
27 | }; | |
28 | ||
29 | int smc_hash_sk(struct sock *sk); | |
30 | void smc_unhash_sk(struct sock *sk); | |
c6ba7c9b HW |
31 | |
32 | /* SMCD/ISM device driver interface */ | |
33 | struct smcd_dmb { | |
34 | u64 dmb_tok; | |
35 | u64 rgid; | |
36 | u32 dmb_len; | |
37 | u32 sba_idx; | |
38 | u32 vlan_valid; | |
39 | u32 vlan_id; | |
40 | void *cpu_addr; | |
41 | dma_addr_t dma_addr; | |
42 | }; | |
43 | ||
44 | #define ISM_EVENT_DMB 0 | |
45 | #define ISM_EVENT_GID 1 | |
46 | #define ISM_EVENT_SWR 2 | |
47 | ||
201091eb UB |
48 | #define ISM_RESERVED_VLANID 0x1FFF |
49 | ||
42bfba9e UB |
50 | #define ISM_ERROR 0xFFFF |
51 | ||
c6ba7c9b | 52 | struct smcd_dev; |
820f2100 | 53 | struct ism_client; |
c6ba7c9b HW |
54 | |
55 | struct smcd_ops { | |
56 | int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid, | |
57 | u32 vid); | |
820f2100 SR |
58 | int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb, |
59 | struct ism_client *client); | |
c6ba7c9b HW |
60 | int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb); |
61 | int (*add_vlan_id)(struct smcd_dev *dev, u64 vlan_id); | |
62 | int (*del_vlan_id)(struct smcd_dev *dev, u64 vlan_id); | |
63 | int (*set_vlan_required)(struct smcd_dev *dev); | |
64 | int (*reset_vlan_required)(struct smcd_dev *dev); | |
65 | int (*signal_event)(struct smcd_dev *dev, u64 rgid, u32 trigger_irq, | |
66 | u32 event_code, u64 info); | |
67 | int (*move_data)(struct smcd_dev *dev, u64 dmb_tok, unsigned int idx, | |
68 | bool sf, unsigned int offset, void *data, | |
69 | unsigned int size); | |
f947568e | 70 | int (*supports_v2)(void); |
0a2f4f98 | 71 | u8* (*get_system_eid)(void); |
9de4df7b | 72 | u64 (*get_local_gid)(struct smcd_dev *dev); |
8caaccf5 | 73 | u16 (*get_chid)(struct smcd_dev *dev); |
8c81ba20 | 74 | struct device* (*get_dev)(struct smcd_dev *dev); |
c6ba7c9b HW |
75 | }; |
76 | ||
77 | struct smcd_dev { | |
78 | const struct smcd_ops *ops; | |
c6ba7c9b | 79 | void *priv; |
c6ba7c9b HW |
80 | struct list_head list; |
81 | spinlock_t lock; | |
82 | struct smc_connection **conn; | |
83 | struct list_head vlan; | |
84 | struct workqueue_struct *event_wq; | |
1619f770 | 85 | u8 pnetid[SMC_MAX_PNETID_LEN]; |
f3d74b22 | 86 | bool pnetid_by_user; |
a2351c5d | 87 | struct list_head lgr_list; |
a0a62ee1 | 88 | spinlock_t lgr_lock; |
5edd6b9c UB |
89 | atomic_t lgr_cnt; |
90 | wait_queue_head_t lgrs_deleted; | |
c3d9494e | 91 | u8 going_away : 1; |
c6ba7c9b HW |
92 | }; |
93 | ||
f16a7dd5 | 94 | #endif /* _SMC_H */ |