1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Shared Memory Communications over RDMA (SMC-R) and RoCE |
4 | * |
5 | * PNET table queries |
6 | * |
7 | * Copyright IBM Corp. 2016 |
8 | * |
9 | * Author(s): Thomas Richter <tmricht@linux.vnet.ibm.com> |
10 | */ |
11 | |
12 | #ifndef _SMC_PNET_H |
13 | #define _SMC_PNET_H |
14 | |
15 | #include <net/smc.h> |
16 | |
17 | #if IS_ENABLED(CONFIG_HAVE_PNETID) |
18 | #include <asm/pnet.h> |
19 | #endif |
20 | |
21 | struct smc_ib_device; |
22 | struct smcd_dev; |
23 | struct smc_init_info; |
24 | struct smc_link_group; |
25 | |
26 | /** |
27 | * struct smc_pnettable - SMC PNET table anchor |
28 | * @lock: Lock for list action |
29 | * @pnetlist: List of PNETIDs |
30 | */ |
31 | struct smc_pnettable { |
32 | struct mutex lock; |
33 | struct list_head pnetlist; |
34 | }; |
35 | |
36 | struct smc_pnetids_ndev { /* list of pnetids for net devices in UP state*/ |
37 | struct list_head list; |
38 | rwlock_t lock; |
39 | }; |
40 | |
41 | struct smc_pnetids_ndev_entry { |
42 | struct list_head list; |
43 | u8 pnetid[SMC_MAX_PNETID_LEN]; |
44 | refcount_t refcnt; |
45 | }; |
46 | |
47 | static inline int smc_pnetid_by_dev_port(struct device *dev, |
48 | unsigned short port, u8 *pnetid) |
49 | { |
50 | #if IS_ENABLED(CONFIG_HAVE_PNETID) |
51 | return pnet_id_by_dev_port(dev, port, pnetid); |
52 | #else |
53 | return -ENOENT; |
54 | #endif |
55 | } |
56 | |
57 | int smc_pnet_init(void) __init; |
58 | int smc_pnet_net_init(struct net *net); |
59 | void smc_pnet_exit(void); |
60 | void smc_pnet_net_exit(struct net *net); |
61 | void smc_pnet_find_roce_resource(struct sock *sk, struct smc_init_info *ini); |
62 | void smc_pnet_find_ism_resource(struct sock *sk, struct smc_init_info *ini); |
63 | int smc_pnetid_by_table_ib(struct smc_ib_device *smcibdev, u8 ib_port); |
64 | int smc_pnetid_by_table_smcd(struct smcd_dev *smcd); |
65 | void smc_pnet_find_alt_roce(struct smc_link_group *lgr, |
66 | struct smc_init_info *ini, |
67 | struct smc_ib_device *known_dev); |
68 | bool smc_pnet_is_ndev_pnetid(struct net *net, u8 *pnetid); |
69 | bool smc_pnet_is_pnetid_set(u8 *pnetid); |
70 | #endif |
71 | |