0 " lm_J*j"T۸ţ h MAJOR=4 MINOR=44 DEVNAME=tty44  xw[/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * FC Transport BSG Interface * * Copyright (C) 2008 James Smart, Emulex Corporation */ #ifndef SCSI_BSG_FC_H #define SCSI_BSG_FC_H #include /* * This file intended to be included by both kernel and user space */ /* * FC Transport SGIO v4 BSG Message Support */ /* Default BSG request timeout (in seconds) */ #define FC_DEFAULT_BSG_TIMEOUT (10 * HZ) /* * Request Message Codes supported by the FC Transport */ /* define the class masks for the message codes */ #define FC_BSG_CLS_MASK 0xF0000000 /* find object class */ #define FC_BSG_HST_MASK 0x80000000 /* fc host class */ #define FC_BSG_RPT_MASK 0x40000000 /* fc rport class */ /* fc_host Message Codes */ #define FC_BSG_HST_ADD_RPORT (FC_BSG_HST_MASK | 0x00000001) #define FC_BSG_HST_DEL_RPORT (FC_BSG_HST_MASK | 0x00000002) #define FC_BSG_HST_ELS_NOLOGIN (FC_BSG_HST_MASK | 0x00000003) #define FC_BSG_HST_CT (FC_BSG_HST_MASK | 0x00000004) #define FC_BSG_HST_VENDOR (FC_BSG_HST_MASK | 0x000000FF) /* fc_rport Message Codes */ #define FC_BSG_RPT_ELS (FC_BSG_RPT_MASK | 0x00000001) #define FC_BSG_RPT_CT (FC_BSG_RPT_MASK | 0x00000002) /* * FC Address Identifiers in Message Structures : * * Whenever a command payload contains a FC Address Identifier * (aka port_id), the value is effectively in big-endian * order, thus the array elements are decoded as follows: * element [0] is bits 23:16 of the FC Address Identifier * element [1] is bits 15:8 of the FC Address Identifier * element [2] is bits 7:0 of the FC Address Identifier */ /* * FC Host Messages */ /* FC_BSG_HST_ADDR_PORT : */ /* Request: * This message requests the FC host to login to the remote port * at the specified N_Port_Id. The remote port is to be enumerated * with the transport upon completion of the login. */ struct fc_bsg_host_add_rport { __u8 reserved; /* FC Address Identier of the remote port to login to */ __u8 port_id[3]; }; /* Response: * There is no additional response data - fc_bsg_reply->result is sufficient */ /* FC_BSG_HST_DEL_RPORT : */ /* Request: * This message requests the FC host to remove an enumerated * remote port and to terminate the login to it. * * Note: The driver is free to reject this request if it desires to * remain logged in with the remote port. */ struct fc_bsg_host_del_rport { __u8 reserved; /* FC Address Identier of the remote port to logout of */ __u8 port_id[3]; }; /* Response: * There is no additional response data - fc_bsg_reply->result is sufficient */ /* FC_BSG_HST_ELS_NOLOGIN : */ /* Request: * This message requests the FC_Host to send an ELS to a specific * N_Port_ID. The host does not need to log into the remote port, * nor does it need to enumerate the rport for further traffic * (although, the FC host is free to do so if it desires). */ struct fc_bsg_host_els { /* * ELS Command Code being sent (must be the same as byte 0 * of the payload) */ __u8 command_code; /* FC Address Identier of the remote port to send the ELS to */ __u8 port_id[3]; }; /* Response: */ /* fc_bsg_ctels_reply->status values */ #define FC_CTELS_STATUS_OK 0x00000000 #define FC_CTELS_STATUS_REJECT 0x00000001 #define FC_CTELS_STATUS_P_RJT 0x00000002 #define FC_CTELS_STATUS_F_RJT 0x00000003 #define FC_CTELS_STATUS_P_BSY 0x00000004 #define FC_CTELS_STATUS_F_BSY 0x00000006 struct fc_bsg_ctels_reply { /* * Note: An ELS LS_RJT may be reported in 2 ways: * a) A status of FC_CTELS_STATUS_OK is returned. The caller * is to look into the ELS receive payload to determine * LS_ACC or LS_RJT (by contents of word 0). The reject * data will be in word 1. * b) A status of FC_CTELS_STATUS_REJECT is returned, The * rjt_data field will contain valid data. * * Note: ELS LS_ACC is determined by an FC_CTELS_STATUS_OK, and * the receive payload word 0 indicates LS_ACC * (e.g.