mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 03:30:53 +07:00
0512f69e38
When a SMC-D link group is freed, a shutdown signal should be sent to the peer to indicate that the link group is invalid. This patch adds the shutdown signal to the SMC code. Signed-off-by: Hans Wippel <hwippel@linux.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* 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 "smc.h"
|
|
|
|
struct smcd_dev_list { /* List of SMCD devices */
|
|
struct list_head list;
|
|
spinlock_t lock; /* Protects list of devices */
|
|
};
|
|
|
|
extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */
|
|
|
|
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);
|
|
#endif
|