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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
* PNET table queries
*
* Copyright IBM Corp. 2016
*
* Author(s): Thomas Richter <tmricht@linux.vnet.ibm.com>
*/
#ifndef _SMC_PNET_H
#define _SMC_PNET_H
#include <net/smc.h>
#if IS_ENABLED(CONFIG_HAVE_PNETID)
#include <asm/pnet.h>
#endif
struct smc_ib_device;
struct smcd_dev;
struct smc_init_info;
struct smc_link_group;
/**
* struct smc_pnettable - SMC PNET table anchor
* @lock: Lock for list action
* @pnetlist: List of PNETIDs
*/
struct smc_pnettable {
rwlock_t lock;
struct list_head pnetlist;
};
struct smc_pnetids_ndev { /* list of pnetids for net devices in UP state*/
struct list_head list;
rwlock_t lock;
};
struct smc_pnetids_ndev_entry {
struct list_head list;
u8 pnetid[SMC_MAX_PNETID_LEN];
refcount_t refcnt;
};
static inline int smc_pnetid_by_dev_port(struct device *dev,
unsigned short port, u8 *pnetid)
{
#if IS_ENABLED(CONFIG_HAVE_PNETID)
return pnet_id_by_dev_port(dev, port, pnetid);
#else
return -ENOENT;
#endif
}
int smc_pnet_init(void) __init;
int smc_pnet_net_init(struct net *net);
void smc_pnet_exit(void);
void smc_pnet_net_exit(struct net *net);
void smc_pnet_find_roce_resource(struct sock *sk, struct smc_init_info *ini);
void smc_pnet_find_ism_resource(struct sock *sk, struct smc_init_info *ini);
int smc_pnetid_by_table_ib(struct smc_ib_device *smcibdev, u8 ib_port);
int smc_pnetid_by_table_smcd(struct smcd_dev *smcd);
void smc_pnet_find_alt_roce(struct smc_link_group *lgr,
struct smc_init_info *ini,
struct smc_ib_device *known_dev);
bool smc_pnet_is_ndev_pnetid(struct net *net, u8 *pnetid);
#endif
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