1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2#ifndef _SMC_DIAG_H_
  3#define _SMC_DIAG_H_
  4
  5#include <linux/types.h>
  6#include <linux/inet_diag.h>
  7#include <rdma/ib_user_verbs.h>
  8
  9/* Request structure */
 10struct smc_diag_req {
 11	__u8	diag_family;
 12	__u8	pad[2];
 13	__u8	diag_ext;		/* Query extended information */
 14	struct inet_diag_sockid	id;
 15};
 16
 17/* Base info structure. It contains socket identity (addrs/ports/cookie) based
 18 * on the internal clcsock, and more SMC-related socket data
 19 */
 20struct smc_diag_msg {
 21	__u8		diag_family;
 22	__u8		diag_state;
 23	union {
 24		__u8	diag_mode;
 25		__u8	diag_fallback; /* the old name of the field */
 26	};
 27	__u8		diag_shutdown;
 28	struct inet_diag_sockid id;
 29
 30	__u32		diag_uid;
 31	__aligned_u64	diag_inode;
 32};
 33
 34/* Mode of a connection */
 35enum {
 36	SMC_DIAG_MODE_SMCR,
 37	SMC_DIAG_MODE_FALLBACK_TCP,
 38	SMC_DIAG_MODE_SMCD,
 39};
 40
 41/* Extensions */
 42
 43enum {
 44	SMC_DIAG_NONE,
 45	SMC_DIAG_CONNINFO,
 46	SMC_DIAG_LGRINFO,
 47	SMC_DIAG_SHUTDOWN,
 48	SMC_DIAG_DMBINFO,
 49	SMC_DIAG_FALLBACK,
 50	__SMC_DIAG_MAX,
 51};
 52
 53#define SMC_DIAG_MAX (__SMC_DIAG_MAX - 1)
 54
 55/* SMC_DIAG_CONNINFO */
 56
 57struct smc_diag_cursor {
 58	__u16	reserved;
 59	__u16	wrap;
 60	__u32	count;
 61};
 62
 63struct smc_diag_conninfo {
 64	__u32			token;		/* unique connection id */
 65	__u32			sndbuf_size;	/* size of send buffer */
 66	__u32			rmbe_size;	/* size of RMB element */
 67	__u32			peer_rmbe_size;	/* size of peer RMB element */
 68	/* local RMB element cursors */
 69	struct smc_diag_cursor	rx_prod;	/* received producer cursor */
 70	struct smc_diag_cursor	rx_cons;	/* received consumer cursor */
 71	/* peer RMB element cursors */
 72	struct smc_diag_cursor	tx_prod;	/* sent producer cursor */
 73	struct smc_diag_cursor	tx_cons;	/* sent consumer cursor */
 74	__u8			rx_prod_flags;	/* received producer flags */
 75	__u8			rx_conn_state_flags; /* recvd connection flags*/
 76	__u8			tx_prod_flags;	/* sent producer flags */
 77	__u8			tx_conn_state_flags; /* sent connection flags*/
 78	/* send buffer cursors */
 79	struct smc_diag_cursor	tx_prep;	/* prepared to be sent cursor */
 80	struct smc_diag_cursor	tx_sent;	/* sent cursor */
 81	struct smc_diag_cursor	tx_fin;		/* confirmed sent cursor */
 82};
 83
 84/* SMC_DIAG_LINKINFO */
 85
 86struct smc_diag_linkinfo {
 87	__u8 link_id;			/* link identifier */
 88	__u8 ibname[IB_DEVICE_NAME_MAX]; /* name of the RDMA device */
 89	__u8 ibport;			/* RDMA device port number */
 90	__u8 gid[40];			/* local GID */
 91	__u8 peer_gid[40];		/* peer GID */
 92};
 93
 94struct smc_diag_lgrinfo {
 95	struct smc_diag_linkinfo	lnk[1];
 96	__u8				role;
 97};
 98
 99struct smc_diag_fallback {
100	__u32 reason;
101	__u32 peer_diagnosis;
102};
103
104struct smcd_diag_dmbinfo {		/* SMC-D Socket internals */
105	__u32		linkid;		/* Link identifier */
106	__aligned_u64	peer_gid;	/* Peer GID */
107	__aligned_u64	my_gid;		/* My GID */
108	__aligned_u64	token;		/* Token of DMB */
109	__aligned_u64	peer_token;	/* Token of remote DMBE */
110	__aligned_u64	peer_gid_ext;	/* Peer GID (extended part) */
111	__aligned_u64	my_gid_ext;	/* My GID (extended part) */
112};
113
114#endif /* _SMC_DIAG_H_ */