Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Shared Memory Communications over RDMA (SMC-R) and RoCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  PNET table queries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *  Copyright IBM Corp. 2016
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *  Author(s):  Thomas Richter <tmricht@linux.vnet.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifndef _SMC_PNET_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define _SMC_PNET_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <net/smc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #if IS_ENABLED(CONFIG_HAVE_PNETID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/pnet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct smc_ib_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct smcd_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct smc_init_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct smc_link_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  * struct smc_pnettable - SMC PNET table anchor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  * @lock: Lock for list action
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  * @pnetlist: List of PNETIDs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct smc_pnettable {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	struct list_head pnetlist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct smc_pnetids_ndev {	/* list of pnetids for net devices in UP state*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	struct list_head	list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	rwlock_t		lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct smc_pnetids_ndev_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	struct list_head	list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	u8			pnetid[SMC_MAX_PNETID_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	refcount_t		refcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static inline int smc_pnetid_by_dev_port(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 					 unsigned short port, u8 *pnetid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #if IS_ENABLED(CONFIG_HAVE_PNETID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	return pnet_id_by_dev_port(dev, port, pnetid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int smc_pnet_init(void) __init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) int smc_pnet_net_init(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) void smc_pnet_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) void smc_pnet_net_exit(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) void smc_pnet_find_roce_resource(struct sock *sk, struct smc_init_info *ini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) void smc_pnet_find_ism_resource(struct sock *sk, struct smc_init_info *ini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int smc_pnetid_by_table_ib(struct smc_ib_device *smcibdev, u8 ib_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int smc_pnetid_by_table_smcd(struct smcd_dev *smcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) void smc_pnet_find_alt_roce(struct smc_link_group *lgr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 			    struct smc_init_info *ini,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 			    struct smc_ib_device *known_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) bool smc_pnet_is_ndev_pnetid(struct net *net, u8 *pnetid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) bool smc_pnet_is_pnetid_set(u8 *pnetid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #endif