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#if IS_ENABLED(CONFIG_HAVE_PNETID)
16#include <asm/pnet.h>
17#endif
18
19struct smc_ib_device;
20struct smcd_dev;
21struct smc_init_info;
22
23/**
24 * struct smc_pnettable - SMC PNET table anchor
25 * @lock: Lock for list action
26 * @pnetlist: List of PNETIDs
27 */
28struct smc_pnettable {
29	rwlock_t lock;
30	struct list_head pnetlist;
31};
32
33static inline int smc_pnetid_by_dev_port(struct device *dev,
34					 unsigned short port, u8 *pnetid)
35{
36#if IS_ENABLED(CONFIG_HAVE_PNETID)
37	return pnet_id_by_dev_port(dev, port, pnetid);
38#else
39	return -ENOENT;
40#endif
41}
42
43int smc_pnet_init(void) __init;
44int smc_pnet_net_init(struct net *net);
45void smc_pnet_exit(void);
46void smc_pnet_net_exit(struct net *net);
47void smc_pnet_find_roce_resource(struct sock *sk, struct smc_init_info *ini);
48void smc_pnet_find_ism_resource(struct sock *sk, struct smc_init_info *ini);
49
50#endif