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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2016, Avago Technologies
*/
#ifndef _NVME_FC_TRANSPORT_H
#define _NVME_FC_TRANSPORT_H 1
/*
* Common definitions between the nvme_fc (host) transport and
* nvmet_fc (target) transport implementation.
*/
/*
* ****************** FC-NVME LS HANDLING ******************
*/
union nvmefc_ls_requests {
struct fcnvme_ls_cr_assoc_rqst rq_cr_assoc;
struct fcnvme_ls_cr_conn_rqst rq_cr_conn;
struct fcnvme_ls_disconnect_assoc_rqst rq_dis_assoc;
struct fcnvme_ls_disconnect_conn_rqst rq_dis_conn;
} __aligned(128); /* alignment for other things alloc'd with */
union nvmefc_ls_responses {
struct fcnvme_ls_rjt rsp_rjt;
struct fcnvme_ls_cr_assoc_acc rsp_cr_assoc;
struct fcnvme_ls_cr_conn_acc rsp_cr_conn;
struct fcnvme_ls_disconnect_assoc_acc rsp_dis_assoc;
struct fcnvme_ls_disconnect_conn_acc rsp_dis_conn;
} __aligned(128); /* alignment for other things alloc'd with */
static inline void
nvme_fc_format_rsp_hdr(void *buf, u8 ls_cmd, __be32 desc_len, u8 rqst_ls_cmd)
{
struct fcnvme_ls_acc_hdr *acc = buf;
acc->w0.ls_cmd = ls_cmd;
acc->desc_list_len = desc_len;
acc->rqst.desc_tag = cpu_to_be32(FCNVME_LSDESC_RQST);
acc->rqst.desc_len =
fcnvme_lsdesc_len(sizeof(struct fcnvme_lsdesc_rqst));
acc->rqst.w0.ls_cmd = rqst_ls_cmd;
}
static inline int
nvme_fc_format_rjt(void *buf, u16 buflen, u8 ls_cmd,
u8 reason, u8 explanation, u8 vendor)
{
struct fcnvme_ls_rjt *rjt = buf;
nvme_fc_format_rsp_hdr(buf, FCNVME_LSDESC_RQST,
fcnvme_lsdesc_len(sizeof(struct fcnvme_ls_rjt)),
ls_cmd);
rjt->rjt.desc_tag = cpu_to_be32(FCNVME_LSDESC_RJT);
rjt->rjt.desc_len = fcnvme_lsdesc_len(sizeof(struct fcnvme_lsdesc_rjt));
rjt->rjt.reason_code = reason;
rjt->rjt.reason_explanation = explanation;
rjt->rjt.vendor = vendor;
return sizeof(struct fcnvme_ls_rjt);
}
/* Validation Error indexes into the string table below */
enum {
VERR_NO_ERROR = 0,
VERR_CR_ASSOC_LEN = 1,
VERR_CR_ASSOC_RQST_LEN = 2,
VERR_CR_ASSOC_CMD = 3,
VERR_CR_ASSOC_CMD_LEN = 4,
VERR_ERSP_RATIO = 5,
VERR_ASSOC_ALLOC_FAIL = 6,
VERR_QUEUE_ALLOC_FAIL = 7,
VERR_CR_CONN_LEN = 8,
VERR_CR_CONN_RQST_LEN = 9,
VERR_ASSOC_ID = 10,
VERR_ASSOC_ID_LEN = 11,
VERR_NO_ASSOC = 12,
VERR_CONN_ID = 13,
VERR_CONN_ID_LEN = 14,
VERR_INVAL_CONN = 15,
VERR_CR_CONN_CMD = 16,
VERR_CR_CONN_CMD_LEN = 17,
VERR_DISCONN_LEN = 18,
VERR_DISCONN_RQST_LEN = 19,
VERR_DISCONN_CMD = 20,
VERR_DISCONN_CMD_LEN = 21,
VERR_DISCONN_SCOPE = 22,
VERR_RS_LEN = 23,
VERR_RS_RQST_LEN = 24,
VERR_RS_CMD = 25,
VERR_RS_CMD_LEN = 26,
VERR_RS_RCTL = 27,
VERR_RS_RO = 28,
VERR_LSACC = 29,
VERR_LSDESC_RQST = 30,
VERR_LSDESC_RQST_LEN = 31,
VERR_CR_ASSOC = 32,
VERR_CR_ASSOC_ACC_LEN = 33,
VERR_CR_CONN = 34,
VERR_CR_CONN_ACC_LEN = 35,
VERR_DISCONN = 36,
VERR_DISCONN_ACC_LEN = 37,
};
static char *validation_errors[] = {
"OK",
"Bad CR_ASSOC Length",
"Bad CR_ASSOC Rqst Length",
"Not CR_ASSOC Cmd",
"Bad CR_ASSOC Cmd Length",
"Bad Ersp Ratio",
"Association Allocation Failed",
"Queue Allocation Failed",
"Bad CR_CONN Length",
"Bad CR_CONN Rqst Length",
"Not Association ID",
"Bad Association ID Length",
"No Association",
"Not Connection ID",
"Bad Connection ID Length",
"Invalid Connection ID",
"Not CR_CONN Cmd",
"Bad CR_CONN Cmd Length",
"Bad DISCONN Length",
"Bad DISCONN Rqst Length",
"Not DISCONN Cmd",
"Bad DISCONN Cmd Length",
"Bad Disconnect Scope",
"Bad RS Length",
"Bad RS Rqst Length",
"Not RS Cmd",
"Bad RS Cmd Length",
"Bad RS R_CTL",
"Bad RS Relative Offset",
"Not LS_ACC",
"Not LSDESC_RQST",
"Bad LSDESC_RQST Length",
"Not CR_ASSOC Rqst",
"Bad CR_ASSOC ACC Length",
"Not CR_CONN Rqst",
"Bad CR_CONN ACC Length",
"Not Disconnect Rqst",
"Bad Disconnect ACC Length",
};
#endif /* _NVME_FC_TRANSPORT_H */
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