1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
* Definitions for IB environment
*
* Copyright IBM Corp. 2016
*
* Author(s): Ursula Braun <Ursula Braun@linux.vnet.ibm.com>
*/
#ifndef _SMC_IB_H
#define _SMC_IB_H
#include <linux/interrupt.h>
#include <linux/if_ether.h>
#include <rdma/ib_verbs.h>
#include <net/smc.h>
#define SMC_MAX_PORTS 2 /* Max # of ports */
#define SMC_GID_SIZE sizeof(union ib_gid)
#define SMC_IB_MAX_SEND_SGE 2
struct smc_ib_devices { /* list of smc ib devices definition */
struct list_head list;
spinlock_t lock; /* protects list of smc ib devices */
};
extern struct smc_ib_devices smc_ib_devices; /* list of smc ib devices */
struct smc_ib_device { /* ib-device infos for smc */
struct list_head list;
struct ib_device *ibdev;
struct ib_port_attr pattr[SMC_MAX_PORTS]; /* ib dev. port attrs */
struct ib_event_handler event_handler; /* global ib_event handler */
struct ib_cq *roce_cq_send; /* send completion queue */
struct ib_cq *roce_cq_recv; /* recv completion queue */
struct tasklet_struct send_tasklet; /* called by send cq handler */
struct tasklet_struct recv_tasklet; /* called by recv cq handler */
char mac[SMC_MAX_PORTS][ETH_ALEN];
/* mac address per port*/
u8 pnetid[SMC_MAX_PORTS][SMC_MAX_PNETID_LEN];
/* pnetid per port */
bool pnetid_by_user[SMC_MAX_PORTS];
/* pnetid defined by user? */
u8 initialized : 1; /* ib dev CQ, evthdl done */
struct work_struct port_event_work;
unsigned long port_event_mask;
};
struct smc_buf_desc;
struct smc_link;
int smc_ib_register_client(void) __init;
void smc_ib_unregister_client(void);
bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport);
int smc_ib_buf_map_sg(struct smc_ib_device *smcibdev,
struct smc_buf_desc *buf_slot,
enum dma_data_direction data_direction);
void smc_ib_buf_unmap_sg(struct smc_ib_device *smcibdev,
struct smc_buf_desc *buf_slot,
enum dma_data_direction data_direction);
void smc_ib_dealloc_protection_domain(struct smc_link *lnk);
int smc_ib_create_protection_domain(struct smc_link *lnk);
void smc_ib_destroy_queue_pair(struct smc_link *lnk);
int smc_ib_create_queue_pair(struct smc_link *lnk);
int smc_ib_ready_link(struct smc_link *lnk);
int smc_ib_modify_qp_rts(struct smc_link *lnk);
int smc_ib_modify_qp_reset(struct smc_link *lnk);
long smc_ib_setup_per_ibdev(struct smc_ib_device *smcibdev);
int smc_ib_get_memory_region(struct ib_pd *pd, int access_flags,
struct smc_buf_desc *buf_slot);
void smc_ib_put_memory_region(struct ib_mr *mr);
void smc_ib_sync_sg_for_cpu(struct smc_ib_device *smcibdev,
struct smc_buf_desc *buf_slot,
enum dma_data_direction data_direction);
void smc_ib_sync_sg_for_device(struct smc_ib_device *smcibdev,
struct smc_buf_desc *buf_slot,
enum dma_data_direction data_direction);
int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport,
unsigned short vlan_id, u8 gid[], u8 *sgid_index);
#endif
|
