1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_SMC_DIAG_H_ 3 #define _UAPI_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 */ 10 struct 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 */ 20 struct 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 */ 35 enum { 36 SMC_DIAG_MODE_SMCR, 37 SMC_DIAG_MODE_FALLBACK_TCP, 38 SMC_DIAG_MODE_SMCD, 39 }; 40 41 /* Extensions */ 42 43 enum { 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 57 struct smc_diag_cursor { 58 __u16 reserved; 59 __u16 wrap; 60 __u32 count; 61 }; 62 63 struct 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 86 struct 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 94 struct smc_diag_lgrinfo { 95 struct smc_diag_linkinfo lnk[1]; 96 __u8 role; 97 }; 98 99 struct smc_diag_fallback { 100 __u32 reason; 101 __u32 peer_diagnosis; 102 }; 103 104 struct 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 }; 111 112 #endif /* _UAPI_SMC_DIAG_H_ */ 113