1 files changed, 112 insertions, 0 deletions
diff --git a/include/uapi/linux/smc_diag.h b/include/uapi/linux/smc_diag.h
new file mode 100644
index 000000000..8cb3a6fef
--- /dev/null
+++ b/include/uapi/linux/smc_diag.h
@@ -0,0 +1,112 @@
+/* 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;
+	union {
+		__u8	diag_mode;
+		__u8	diag_fallback; /* the old name of the field */
+	};
+	__u8		diag_shutdown;
+	struct inet_diag_sockid id;
+
+	__u32		diag_uid;
+	__aligned_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 */
+	__aligned_u64	peer_gid;	/* Peer GID */
+	__aligned_u64	my_gid;		/* My GID */
+	__aligned_u64	token;		/* Token of DMB */
+	__aligned_u64	peer_token;	/* Token of remote DMBE */
+};
+
+#endif /* _UAPI_SMC_DIAG_H_ */