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 19 struct smc_ib_device; 20 struct smcd_dev; 21 22 /** 23 * struct smc_pnettable - SMC PNET table anchor 24 * @lock: Lock for list action 25 * @pnetlist: List of PNETIDs 26 */ 27 struct smc_pnettable { 28 rwlock_t lock; 29 struct list_head pnetlist; 30 }; 31 32 static inline int smc_pnetid_by_dev_port(struct device *dev, 33 unsigned short port, u8 *pnetid) 34 { 35 #if IS_ENABLED(CONFIG_HAVE_PNETID) 36 return pnet_id_by_dev_port(dev, port, pnetid); 37 #else 38 return -ENOENT; 39 #endif 40 } 41 42 int smc_pnet_init(void) __init; 43 int smc_pnet_net_init(struct net *net); 44 void smc_pnet_exit(void); 45 void smc_pnet_net_exit(struct net *net); 46 void smc_pnet_find_roce_resource(struct sock *sk, 47 struct smc_ib_device **smcibdev, u8 *ibport, 48 unsigned short vlan_id, u8 gid[]); 49 void smc_pnet_find_ism_resource(struct sock *sk, struct smcd_dev **smcismdev); 50 51 #endif 52