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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_SMC_DIAG_H_
#define _UAPI_SMC_DIAG_H_
#include <linux/types.h>
#include <linux/inet_diag.h>
#include <rdma/ib_user_verbs.h>
/* Request structure */
struct smc_diag_req {
__u8 diag_family;
__u8 pad[2];
__u8 diag_ext; /* Query extended information */
struct inet_diag_sockid id;
};
/* Base info structure. It contains socket identity (addrs/ports/cookie) based
* on the internal clcsock, and more SMC-related socket data
*/
struct smc_diag_msg {
__u8 diag_family;
__u8 diag_state;
__u8 diag_mode;
__u8 diag_shutdown;
struct inet_diag_sockid id;
__u32 diag_uid;
__u64 diag_inode;
};
/* Mode of a connection */
enum {
SMC_DIAG_MODE_SMCR,
SMC_DIAG_MODE_FALLBACK_TCP,
SMC_DIAG_MODE_SMCD,
};
/* Extensions */
enum {
SMC_DIAG_NONE,
SMC_DIAG_CONNINFO,
SMC_DIAG_LGRINFO,
SMC_DIAG_SHUTDOWN,
SMC_DIAG_DMBINFO,
SMC_DIAG_FALLBACK,
__SMC_DIAG_MAX,
};
#define SMC_DIAG_MAX (__SMC_DIAG_MAX - 1)
/* SMC_DIAG_CONNINFO */
struct smc_diag_cursor {
__u16 reserved;
__u16 wrap;
__u32 count;
};
struct smc_diag_conninfo {
__u32 token; /* unique connection id */
__u32 sndbuf_size; /* size of send buffer */
__u32 rmbe_size; /* size of RMB element */
__u32 peer_rmbe_size; /* size of peer RMB element */
/* local RMB element cursors */
struct smc_diag_cursor rx_prod; /* received producer cursor */
struct smc_diag_cursor rx_cons; /* received consumer cursor */
/* peer RMB element cursors */
struct smc_diag_cursor tx_prod; /* sent producer cursor */
struct smc_diag_cursor tx_cons; /* sent consumer cursor */
__u8 rx_prod_flags; /* received producer flags */
__u8 rx_conn_state_flags; /* recvd connection flags*/
__u8 tx_prod_flags; /* sent producer flags */
__u8 tx_conn_state_flags; /* sent connection flags*/
/* send buffer cursors */
struct smc_diag_cursor tx_prep; /* prepared to be sent cursor */
struct smc_diag_cursor tx_sent; /* sent cursor */
struct smc_diag_cursor tx_fin; /* confirmed sent cursor */
};
/* SMC_DIAG_LINKINFO */
struct smc_diag_linkinfo {
__u8 link_id; /* link identifier */
__u8 ibname[IB_DEVICE_NAME_MAX]; /* name of the RDMA device */
__u8 ibport; /* RDMA device port number */
__u8 gid[40]; /* local GID */
__u8 peer_gid[40]; /* peer GID */
};
struct smc_diag_lgrinfo {
struct smc_diag_linkinfo lnk[1];
__u8 role;
};
struct smc_diag_fallback {
__u32 reason;
__u32 peer_diagnosis;
};
struct smcd_diag_dmbinfo { /* SMC-D Socket internals */
__u32 linkid; /* Link identifier */
__u64 peer_gid; /* Peer GID */
__u64 my_gid; /* My GID */
__u64 token; /* Token of DMB */
__u64 peer_token; /* Token of remote DMBE */
};
#endif /* _UAPI_SMC_DIAG_H_ */
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