1c6ba7c9bSHans Wippel /* SPDX-License-Identifier: GPL-2.0 */ 2c6ba7c9bSHans Wippel /* Shared Memory Communications Direct over ISM devices (SMC-D) 3c6ba7c9bSHans Wippel * 4c6ba7c9bSHans Wippel * SMC-D ISM device structure definitions. 5c6ba7c9bSHans Wippel * 6c6ba7c9bSHans Wippel * Copyright IBM Corp. 2018 7c6ba7c9bSHans Wippel */ 8c6ba7c9bSHans Wippel 9c6ba7c9bSHans Wippel #ifndef SMCD_ISM_H 10c6ba7c9bSHans Wippel #define SMCD_ISM_H 11c6ba7c9bSHans Wippel 12c6ba7c9bSHans Wippel #include <linux/uio.h> 1349407ae2SGuvenc Gulce #include <linux/types.h> 1482087c03SUrsula Braun #include <linux/mutex.h> 15c6ba7c9bSHans Wippel 16c6ba7c9bSHans Wippel #include "smc.h" 17c6ba7c9bSHans Wippel 18c6ba7c9bSHans Wippel struct smcd_dev_list { /* List of SMCD devices */ 19c6ba7c9bSHans Wippel struct list_head list; 2082087c03SUrsula Braun struct mutex mutex; /* Protects list of devices */ 21c6ba7c9bSHans Wippel }; 22c6ba7c9bSHans Wippel 23c6ba7c9bSHans Wippel extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */ 24c6ba7c9bSHans Wippel 25c6ba7c9bSHans Wippel struct smc_ism_vlanid { /* VLAN id set on ISM device */ 26c6ba7c9bSHans Wippel struct list_head list; 27c6ba7c9bSHans Wippel unsigned short vlanid; /* Vlan id */ 28c6ba7c9bSHans Wippel refcount_t refcnt; /* Reference count */ 29c6ba7c9bSHans Wippel }; 30c6ba7c9bSHans Wippel 31c6ba7c9bSHans Wippel struct smcd_dev; 32c6ba7c9bSHans Wippel 33c6ba7c9bSHans Wippel int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *dev); 34c6ba7c9bSHans Wippel void smc_ism_set_conn(struct smc_connection *conn); 35c6ba7c9bSHans Wippel void smc_ism_unset_conn(struct smc_connection *conn); 36c6ba7c9bSHans Wippel int smc_ism_get_vlan(struct smcd_dev *dev, unsigned short vlan_id); 37c6ba7c9bSHans Wippel int smc_ism_put_vlan(struct smcd_dev *dev, unsigned short vlan_id); 38c6ba7c9bSHans Wippel int smc_ism_register_dmb(struct smc_link_group *lgr, int buf_size, 39c6ba7c9bSHans Wippel struct smc_buf_desc *dmb_desc); 40c6ba7c9bSHans Wippel int smc_ism_unregister_dmb(struct smcd_dev *dev, struct smc_buf_desc *dmb_desc); 410512f69eSHans Wippel int smc_ism_signal_shutdown(struct smc_link_group *lgr); 4211a26c59SKarsten Graul void smc_ism_get_system_eid(u8 **eid); 438caaccf5SUrsula Braun u16 smc_ism_get_chid(struct smcd_dev *dev); 4449407ae2SGuvenc Gulce bool smc_ism_is_v2_capable(void); 45201091ebSUrsula Braun void smc_ism_init(void); 46aaf95523SGuvenc Gulce int smcd_nl_get_device(struct sk_buff *skb, struct netlink_callback *cb); 47*eb481b02SHeiko Carstens 48*eb481b02SHeiko Carstens static inline int smc_ism_write(struct smcd_dev *smcd, u64 dmb_tok, 49*eb481b02SHeiko Carstens unsigned int idx, bool sf, unsigned int offset, 50*eb481b02SHeiko Carstens void *data, size_t len) 51*eb481b02SHeiko Carstens { 52*eb481b02SHeiko Carstens int rc; 53*eb481b02SHeiko Carstens 54*eb481b02SHeiko Carstens rc = smcd->ops->move_data(smcd, dmb_tok, idx, sf, offset, data, len); 55*eb481b02SHeiko Carstens return rc < 0 ? rc : 0; 56*eb481b02SHeiko Carstens } 57*eb481b02SHeiko Carstens 58c6ba7c9bSHans Wippel #endif 59