diff options
Diffstat (limited to 'net/smc/smc_ism.h')
| -rw-r--r-- | net/smc/smc_ism.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h new file mode 100644 index 000000000..8048e09dd --- /dev/null +++ b/net/smc/smc_ism.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Shared Memory Communications Direct over ISM devices (SMC-D) + * + * SMC-D ISM device structure definitions. + * + * Copyright IBM Corp. 2018 + */ + +#ifndef SMCD_ISM_H +#define SMCD_ISM_H + +#include <linux/uio.h> +#include <linux/mutex.h> + +#include "smc.h" + +struct smcd_dev_list { /* List of SMCD devices */ + struct list_head list; + struct mutex mutex; /* Protects list of devices */ +}; + +extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */ +extern bool smc_ism_v2_capable; /* HW supports ISM V2 and thus + * System EID is defined + */ + +struct smc_ism_vlanid { /* VLAN id set on ISM device */ + struct list_head list; + unsigned short vlanid; /* Vlan id */ + refcount_t refcnt; /* Reference count */ +}; + +struct smc_ism_position { /* ISM device position to write to */ + u64 token; /* Token of DMB */ + u32 offset; /* Offset into DMBE */ + u8 index; /* Index of DMBE */ + u8 signal; /* Generate interrupt on owner side */ +}; + +struct smcd_dev; + +int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *dev); +void smc_ism_set_conn(struct smc_connection *conn); +void smc_ism_unset_conn(struct smc_connection *conn); +int smc_ism_get_vlan(struct smcd_dev *dev, unsigned short vlan_id); +int smc_ism_put_vlan(struct smcd_dev *dev, unsigned short vlan_id); +int smc_ism_register_dmb(struct smc_link_group *lgr, int buf_size, + struct smc_buf_desc *dmb_desc); +int smc_ism_unregister_dmb(struct smcd_dev *dev, struct smc_buf_desc *dmb_desc); +int smc_ism_write(struct smcd_dev *dev, const struct smc_ism_position *pos, + void *data, size_t len); +int smc_ism_signal_shutdown(struct smc_link_group *lgr); +void smc_ism_get_system_eid(struct smcd_dev *dev, u8 **eid); +u16 smc_ism_get_chid(struct smcd_dev *dev); +void smc_ism_init(void); +#endif |