// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Broadcom. All Rights Reserved. The term
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
*/
/*
* Functions to build and send ELS/CT/BLS commands and responses.
*/
#include "efc.h"
#include "efc_els.h"
#include "../libefc_sli/sli4.h"
#define EFC_LOG_ENABLE_ELS_TRACE(efc) \
(((efc) != NULL) ? (((efc)->logmask & (1U << 1)) != 0) : 0)
#define node_els_trace() \
do { \
if (EFC_LOG_ENABLE_ELS_TRACE(efc)) \
efc_log_info(efc, "[%s] %-20s\n", \
node->display_name, __func__); \
} while (0)
#define els_io_printf(els, fmt, ...) \
efc_log_err((struct efc *)els->node->efc,\
"[%s] %-8s " fmt, \
els->node->display_name,\
els->display_name, ##__VA_ARGS__)
#define EFC_ELS_RSP_LEN 1024
#define EFC_ELS_GID_PT_RSP_LEN 8096
struct efc_els_io_req *
efc_els_io_alloc(struct efc_node *node, u32 reqlen)
{
return efc_els_io_alloc_size(node, reqlen, EFC_ELS_RSP_LEN);
}
struct efc_els_io_req *
efc_els_io_alloc_size(struct efc_node *node, u32 reqlen, u32 rsplen)
{
struct efc *efc;
struct efc_els_io_req *els;
unsigned long flags = 0;
efc = node->efc;
if (!node->els_io_enabled) {
efc_log_err(efc, "els io alloc disabled\n");
return NULL;
}
els = mempool_alloc(efc->els_io_pool, GFP_ATOMIC);
if (!els) {
atomic_add_return(1, &efc->els_io_alloc_failed_count);
return NULL;
}
/* initialize refcount */
kref_init(&els->ref);
els->release = _efc_els_io_free;
/* populate generic io fields */
els->node = node;
/* now allocate DMA for request and response */
els->io.req.size = reqlen;
els->io.req.virt = dma_alloc_coherent(&efc->pci->dev, els->io.req.size,
&els->io.req.phys, GFP_KERNEL);
if (!els->io.req.virt) {
mempool_free(els, efc->els_io_pool);
return NULL;
}
els->io.rsp.size = rsplen;
els->io.rsp.virt = dma_alloc_coherent(&efc->pci->dev, els->io.rsp.size,
&els->io.rsp.phys, GFP_KERNEL);
if (!els->io.rsp.virt) {
dma_free_coherent(&efc->pci->dev, els->io.req.size,
els->io.req.virt, els->io.req.phys);
mempool_free(els, efc->els_io_pool);
els = NULL;
}
if (els) {
/* initialize fields */
els->els_retries_remaining = EFC_FC_ELS_DEFAULT_RETRIES;
/* add els structure to ELS IO list */
INIT_LIST_HEAD(&els->list_entry);
spin_lock_irqsave(&node->els_ios_lock, flags);
list_add_tail(&els->list_entry, &node->els_ios_list);
spin_unlock_irqrestore(&node->els_ios_lock, flags);
}
return els;
}
void
efc_els_io_free(struct efc_els_io_req *els)
{
kref_put(&els->ref, els->release);
}
void
_efc_els_io_free(struct kref *arg)
{
struct efc_els_io_req *els =
container_of(arg, struct efc_els_io_req, ref);
struct efc *efc;
struct efc_node *node;
int send_empty_event = false;
unsigned long flags = 0;
node = els->node;
efc = node->efc;
spin_lock_irqsave(&node->els_ios_lock, flags);
list_del(&els->list_entry);
/* Send list empty event if the IO allocator
* is disabled, and the list is empty
* If node->els_io_enabled was not checked,
* the event would be posted continually
*/
send_empty_event = (!node->els_io_enabled &&
list_empty(&node->els_ios_list));
spin_unlock_irqrestore(&node->els_ios_lock, flags);
/* free ELS request and response buffers */
dma_free_coherent(&efc->pci->dev, els->io.rsp.size,
els->io.rsp.virt, els->io.rsp.phys);
dma_free_coherent(&efc->pci->dev, els->io.req.size,
els->io.req.virt, els->io.req.phys);
mempool_free(els, efc->els_io_pool);
if (send_empty_event)
efc_scsi_io_list_empty(node->efc, node);
}
static void
efc_els_retry(struct efc_els_io_req *els);
static void
efc_els_delay_timer_cb(struct timer_list *t)
{
struct efc_els_io_req *els = from_timer(els, t, delay_timer);
/* Retry delay timer expired, retry the ELS request */
efc_els_retry(els);
}
static int
efc_els_req_cb(void *arg, u32 length, int status, u32 ext_status)
{
struct efc_els_io_req *els;
struct efc_node *node;
struct efc *efc;
struct efc_node_cb cbdata;
u32 reason_code;
els = arg;
node = els->node;
efc = node->efc;
if (status)
els_io_printf(els, "status x%x ext x%x\n", status, ext_status);
/* set the response len element of els->rsp */
els->io.rsp.len = length;
cbdata.status = status;
cbdata.ext_status = ext_status;
cbdata.header = NULL;
cbdata.els_rsp = els->io.rsp;
/* set the response len element of els->rsp */
cbdata.rsp_len = length;
/* FW returns the number of bytes received on the link in
* the WCQE, not the amount placed in the buffer; use this info to
* check if there was an overrun.
*/
if (length > els->io.rsp.size) {
efc_log_warn(efc,
"ELS response returned len=%d > buflen=%zu\n",
length, els->io.rsp.size);
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
return 0;
}
/* Post event to ELS IO object */
switch (status) {
case SLI4_FC_WCQE_STATUS_SUCCESS:
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_OK, &cbdata);
break;
case SLI4_FC_WCQE_STATUS_LS_RJT:
reason_code = (ext_status >> 16) & 0xff;
/* delay and retry if reason code is Logical Busy */
switch (reason_code) {
case ELS_RJT_BUSY:
els->node->els_req_cnt--;
els_io_printf(els,
"LS_RJT Logical Busy, delay and retry\n");
timer_setup(&els->delay_timer,
efc_els_delay_timer_cb, 0);
mod_timer(&els->delay_timer,
jiffies + msecs_to_jiffies(5000));
break;
default:
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_RJT,
&cbdata);
break;
}
break;
case SLI4_FC_WCQE_STATUS_LOCAL_REJECT:
switch (ext_status) {
case SLI4_FC_LOCAL_REJECT_SEQUENCE_TIMEOUT:
efc_els_retry(els);
break;
default:
efc_log_err(efc, "LOCAL_REJECT with ext status:%x\n",
ext_status);
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL,
&cbdata);
break;
}
break;
default: /* Other error */
efc_log_warn(efc, "els req failed status x%x, ext_status x%x\n",
status, ext_status);
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
break;
}
return 0;
}
void efc_disc_io_complete(struct efc_disc_io *io, u32 len, u32 status,
u32 ext_status)
{
struct efc_els_io_req *els =
container_of(io, struct efc_els_io_req, io);
WARN_ON_ONCE(!els->cb);
((efc_hw_srrs_cb_t)els->cb) (els, len, status, ext_status);
}
static int efc_els_send_req(struct efc_node *node, struct efc_els_io_req *els,
enum efc_disc_io_type io_type)
{
int rc = 0;
struct efc *efc = node->efc;
struct efc_node_cb cbdata;
/* update ELS request counter */
els->node->els_req_cnt++;
/* Prepare the IO request details */
els->io.io_type = io_type;
els->io.xmit_len = els->io.req.size;
els->io.rsp_len = els->io.rsp.size;
els->io.rpi = node->rnode.indicator;
els->io.vpi = node->nport->indicator;
els->io.s_id = node->nport->fc_id;
els->io.d_id = node->rnode.fc_id;
if (node->rnode.attached)
els->io.rpi_registered = true;
els->cb = efc_els_req_cb;
rc = efc->tt.send_els(efc, &els->io);
if (!rc)
return rc;
cbdata.status = EFC_STATUS_INVALID;
cbdata.ext_status = EFC_STATUS_INVALID;
cbdata.els_rsp = els->io.rsp;
efc_log_err(efc, "efc_els_send failed: %d\n", rc);
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
return rc;
}
static void
efc_els_retry(struct efc_els_io_req *els)
{
struct efc *efc;
struct efc_node_cb cbdata;
u32 rc;
efc = els->node->efc;
cbdata.status = EFC_STATUS_INVALID;
cbdata.ext_status = EFC_STATUS_INVALID;
cbdata.els_rsp = els->io.rsp;
if (els->els_retries_remaining) {
els->els_retries_remaining--;
rc = efc->tt.send_els(efc, &els->io);
} else {
rc = -EIO;
}
if (rc) {
efc_log_err(efc, "ELS retries exhausted\n");
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata);
}
}
static int
efc_els_acc_cb(void *arg, u32 length, int status, u32 ext_status)
{
struct efc_els_io_req *els;
struct efc_node *node;
struct efc *efc;
struct efc_node_cb cbdata;
els = arg;
node = els->node;
efc = node->efc;
cbdata.status = status;
cbdata.ext_status = ext_status;
cbdata.header = NULL;
cbdata.els_rsp = els->io.rsp;
/* Post node event */
switch (status) {
case SLI4_FC_WCQE_STATUS_SUCCESS:
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_OK, &cbdata);
break;
default: /* Other error */
efc_log_warn(efc, "[%s] %-8s failed status x%x, ext x%x\n",
node->display_name, els->display_name,
status, ext_status);
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_FAIL, &cbdata);
break;
}
return 0;
}
static int
efc_els_send_rsp(struct efc_els_io_req *els, u32 rsplen)
{
int rc = 0;
struct efc_node_cb cbdata;
struct efc_node *node = els->node;
struct efc *efc = node->efc;
/* increment ELS completion counter */
node->els_cmpl_cnt++;
els->io.io_type = EFC_DISC_IO_ELS_RESP;
els->cb = efc_els_acc_cb;
/* Prepare the IO request details */
els->io.xmit_len = rsplen;
els->io.rsp_len = els->io.rsp.size;
els->io.rpi = node->rnode.indicator;
els->io.vpi = node->nport->indicator;
if (node->nport->fc_id != U32_MAX)
els->io.s_id = node->nport->fc_id;
else
els->io.s_id = els->io.iparam.els.s_id;
els->io.d_id = node->rnode.fc_id;
if (node->attached)
els->io.rpi_registered = true;
rc = efc->tt.send_els(efc, &els->io);
if (!rc)
return rc;
cbdata.status = EFC_STATUS_INVALID;
cbdata.ext_status = EFC_STATUS_INVALID;
cbdata.els_rsp = els->io.rsp;
efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_FAIL, &cbdata);
return rc;
}
int
efc_send_plogi(struct efc_node *node)
{
struct efc_els_io_req *els;
struct efc *efc = node->efc;
struct fc_els_flogi *plogi;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*plogi));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->display_name = "plogi";
/* Build PLOGI request */
plogi = els->io.req.virt;
memcpy(plogi, node->nport->service_params, sizeof(*plogi));
plogi->fl_cmd = ELS_PLOGI;
memset(plogi->_fl_resvd, 0, sizeof(plogi->_fl_resvd));
return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
}
int
efc_send_flogi(struct efc_node *node)
{
struct efc_els_io_req *els;
struct efc *efc;
struct fc_els_flogi *flogi;
efc = node->efc;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*flogi));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->display_name = "flogi";
/* Build FLOGI request */
flogi = els->io.req.virt;
memcpy(flogi, node->nport->service_params, sizeof(*flogi));
flogi->fl_cmd = ELS_FLOGI;
memset(flogi->_fl_resvd, 0, sizeof(flogi->_fl_resvd));
return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
}
int
efc_send_fdisc(struct efc_node *node)
{
struct efc_els_io_req *els;
struct efc *efc;
struct fc_els_flogi *fdisc;
efc = node->efc;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*fdisc));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->display_name = "fdisc";
/* Build FDISC request */
fdisc = els->io.req.virt;
memcpy(fdisc, node->nport->service_params, sizeof(*fdisc));
fdisc->fl_cmd = ELS_FDISC;
memset(fdisc->_fl_resvd, 0, sizeof(fdisc->_fl_resvd));
return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
}
int
efc_send_prli(struct efc_node *node)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els;
struct {
struct fc_els_prli prli;
struct fc_els_spp spp;
} *pp;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*pp));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->display_name = "prli";
/* Build PRLI request */
pp = els->io.req.virt;
memset(pp, 0, sizeof(*pp));
pp->prli.prli_cmd = ELS_PRLI;
pp->prli.prli_spp_len = 16;
pp->prli.prli_len = cpu_to_be16(sizeof(*pp));
pp->spp.spp_type = FC_TYPE_FCP;
pp->spp.spp_type_ext = 0;
pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
pp->spp.spp_params = cpu_to_be32(FCP_SPPF_RD_XRDY_DIS |
(node->nport->enable_ini ?
FCP_SPPF_INIT_FCN : 0) |
(node->nport->enable_tgt ?
FCP_SPPF_TARG_FCN : 0));
return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
}
int
efc_send_logo(struct efc_node *node)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els;
struct fc_els_logo *logo;
struct fc_els_flogi *sparams;
node_els_trace();
sparams = (struct fc_els_flogi *)node->nport->service_params;
els = efc_els_io_alloc(node, sizeof(*logo));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->display_name = "logo";
/* Build LOGO request */
logo = els->io.req.virt;
memset(logo, 0, sizeof(*logo));
logo->fl_cmd = ELS_LOGO;
hton24(logo->fl_n_port_id, node->rnode.nport->fc_id);
logo->fl_n_port_wwn = sparams->fl_wwpn;
return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
}
int
efc_send_adisc(struct efc_node *node)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els;
struct fc_els_adisc *adisc;
struct fc_els_flogi *sparams;
struct efc_nport *nport = node->nport;
node_els_trace();
sparams = (struct fc_els_flogi *)node->nport->service_params;
els = efc_els_io_alloc(node, sizeof(*adisc));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->display_name = "adisc";
/* Build ADISC request */
adisc = els->io.req.virt;
memset(adisc, 0, sizeof(*adisc));
adisc->adisc_cmd = ELS_ADISC;
hton24(adisc->adisc_hard_addr, nport->fc_id);
adisc->adisc_wwpn = sparams->fl_wwpn;
adisc->adisc_wwnn = sparams->fl_wwnn;
hton24(adisc->adisc_port_id, node->rnode.nport->fc_id);
return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
}
int
efc_send_scr(struct efc_node *node)
{
struct efc_els_io_req *els;
struct efc *efc = node->efc;
struct fc_els_scr *req;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*req));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->display_name = "scr";
req = els->io.req.virt;
memset(req, 0, sizeof(*req));
req->scr_cmd = ELS_SCR;
req->scr_reg_func = ELS_SCRF_FULL;
return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ);
}
int
efc_send_ls_rjt(struct efc_node *node, u32 ox_id, u32 reason_code,
u32 reason_code_expl, u32 vendor_unique)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els = NULL;
struct fc_els_ls_rjt *rjt;
els = efc_els_io_alloc(node, sizeof(*rjt));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
node_els_trace();
els->display_name = "ls_rjt";
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
rjt = els->io.req.virt;
memset(rjt, 0, sizeof(*rjt));
rjt->er_cmd = ELS_LS_RJT;
rjt->er_reason = reason_code;
rjt->er_explan = reason_code_expl;
return efc_els_send_rsp(els, sizeof(*rjt));
}
int
efc_send_plogi_acc(struct efc_node *node, u32 ox_id)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els = NULL;
struct fc_els_flogi *plogi;
struct fc_els_flogi *req = (struct fc_els_flogi *)node->service_params;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*plogi));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
els->display_name = "plogi_acc";
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
plogi = els->io.req.virt;
/* copy our port's service parameters to payload */
memcpy(plogi, node->nport->service_params, sizeof(*plogi));
plogi->fl_cmd = ELS_LS_ACC;
memset(plogi->_fl_resvd, 0, sizeof(plogi->_fl_resvd));
/* Set Application header support bit if requested */
if (req->fl_csp.sp_features & cpu_to_be16(FC_SP_FT_BCAST))
plogi->fl_csp.sp_features |= cpu_to_be16(FC_SP_FT_BCAST);
return efc_els_send_rsp(els, sizeof(*plogi));
}
int
efc_send_flogi_p2p_acc(struct efc_node *node, u32 ox_id, u32 s_id)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els = NULL;
struct fc_els_flogi *flogi;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*flogi));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
els->display_name = "flogi_p2p_acc";
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
els->io.iparam.els.s_id = s_id;
flogi = els->io.req.virt;
/* copy our port's service parameters to payload */
memcpy(flogi, node->nport->service_params, sizeof(*flogi));
flogi->fl_cmd = ELS_LS_ACC;
memset(flogi->_fl_resvd, 0, sizeof(flogi->_fl_resvd));
memset(flogi->fl_cssp, 0, sizeof(flogi->fl_cssp));
return efc_els_send_rsp(els, sizeof(*flogi));
}
int
efc_send_prli_acc(struct efc_node *node, u32 ox_id)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els = NULL;
struct {
struct fc_els_prli prli;
struct fc_els_spp spp;
} *pp;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*pp));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
els->display_name = "prli_acc";
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
pp = els->io.req.virt;
memset(pp, 0, sizeof(*pp));
pp->prli.prli_cmd = ELS_LS_ACC;
pp->prli.prli_spp_len = 0x10;
pp->prli.prli_len = cpu_to_be16(sizeof(*pp));
pp->spp.spp_type = FC_TYPE_FCP;
pp->spp.spp_type_ext = 0;
pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR | FC_SPP_RESP_ACK;
pp->spp.spp_params = cpu_to_be32(FCP_SPPF_RD_XRDY_DIS |
(node->nport->enable_ini ?
FCP_SPPF_INIT_FCN : 0) |
(node->nport->enable_tgt ?
FCP_SPPF_TARG_FCN : 0));
return efc_els_send_rsp(els, sizeof(*pp));
}
int
efc_send_prlo_acc(struct efc_node *node, u32 ox_id)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els = NULL;
struct {
struct fc_els_prlo prlo;
struct fc_els_spp spp;
} *pp;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*pp));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
els->display_name = "prlo_acc";
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
pp = els->io.req.virt;
memset(pp, 0, sizeof(*pp));
pp->prlo.prlo_cmd = ELS_LS_ACC;
pp->prlo.prlo_obs = 0x10;
pp->prlo.prlo_len = cpu_to_be16(sizeof(*pp));
pp->spp.spp_type = FC_TYPE_FCP;
pp->spp.spp_type_ext = 0;
pp->spp.spp_flags = FC_SPP_RESP_ACK;
return efc_els_send_rsp(els, sizeof(*pp));
}
int
efc_send_ls_acc(struct efc_node *node, u32 ox_id)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els = NULL;
struct fc_els_ls_acc *acc;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*acc));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
els->display_name = "ls_acc";
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
acc = els->io.req.virt;
memset(acc, 0, sizeof(*acc));
acc->la_cmd = ELS_LS_ACC;
return efc_els_send_rsp(els, sizeof(*acc));
}
int
efc_send_logo_acc(struct efc_node *node, u32 ox_id)
{
struct efc_els_io_req *els = NULL;
struct efc *efc = node->efc;
struct fc_els_ls_acc *logo;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*logo));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
els->display_name = "logo_acc";
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
logo = els->io.req.virt;
memset(logo, 0, sizeof(*logo));
logo->la_cmd = ELS_LS_ACC;
return efc_els_send_rsp(els, sizeof(*logo));
}
int
efc_send_adisc_acc(struct efc_node *node, u32 ox_id)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els = NULL;
struct fc_els_adisc *adisc;
struct fc_els_flogi *sparams;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*adisc));
if (!els) {
efc_log_err(efc, "els IO alloc failed\n");
return -EIO;
}
els->display_name = "adisc_acc";
/* Go ahead and send the ELS_ACC */
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.els.ox_id = ox_id;
sparams = (struct fc_els_flogi *)node->nport->service_params;
adisc = els->io.req.virt;
memset(adisc, 0, sizeof(*adisc));
adisc->adisc_cmd = ELS_LS_ACC;
adisc->adisc_wwpn = sparams->fl_wwpn;
adisc->adisc_wwnn = sparams->fl_wwnn;
hton24(adisc->adisc_port_id, node->rnode.nport->fc_id);
return efc_els_send_rsp(els, sizeof(*adisc));
}
static inline void
fcct_build_req_header(struct fc_ct_hdr *hdr, u16 cmd, u16 max_size)
{
hdr->ct_rev = FC_CT_REV;
hdr->ct_fs_type = FC_FST_DIR;
hdr->ct_fs_subtype = FC_NS_SUBTYPE;
hdr->ct_options = 0;
hdr->ct_cmd = cpu_to_be16(cmd);
/* words */
hdr->ct_mr_size = cpu_to_be16(max_size / (sizeof(u32)));
hdr->ct_reason = 0;
hdr->ct_explan = 0;
hdr->ct_vendor = 0;
}
int
efc_ns_send_rftid(struct efc_node *node)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els;
struct {
struct fc_ct_hdr hdr;
struct fc_ns_rft_id rftid;
} *ct;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*ct));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ;
els->io.iparam.ct.type = FC_TYPE_CT;
els->io.iparam.ct.df_ctl = 0;
els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT;
els->display_name = "rftid";
ct = els->io.req.virt;
memset(ct, 0, sizeof(*ct));
fcct_build_req_header(&ct->hdr, FC_NS_RFT_ID,
sizeof(struct fc_ns_rft_id));
hton24(ct->rftid.fr_fid.fp_fid, node->rnode.nport->fc_id);
ct->rftid.fr_fts.ff_type_map[FC_TYPE_FCP / FC_NS_BPW] =
cpu_to_be32(1 << (FC_TYPE_FCP % FC_NS_BPW));
return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ);
}
int
efc_ns_send_rffid(struct efc_node *node)
{
struct efc *efc = node->efc;
struct efc_els_io_req *els;
struct {
struct fc_ct_hdr hdr;
struct fc_ns_rff_id rffid;
} *ct;
node_els_trace();
els = efc_els_io_alloc(node, sizeof(*ct));
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ;
els->io.iparam.ct.type = FC_TYPE_CT;
els->io.iparam.ct.df_ctl = 0;
els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT;
els->display_name = "rffid";
ct = els->io.req.virt;
memset(ct, 0, sizeof(*ct));
fcct_build_req_header(&ct->hdr, FC_NS_RFF_ID,
sizeof(struct fc_ns_rff_id));
hton24(ct->rffid.fr_fid.fp_fid, node->rnode.nport->fc_id);
if (node->nport->enable_ini)
ct->rffid.fr_feat |= FCP_FEAT_INIT;
if (node->nport->enable_tgt)
ct->rffid.fr_feat |= FCP_FEAT_TARG;
ct->rffid.fr_type = FC_TYPE_FCP;
return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ);
}
int
efc_ns_send_gidpt(struct efc_node *node)
{
struct efc_els_io_req *els = NULL;
struct efc *efc = node->efc;
struct {
struct fc_ct_hdr hdr;
struct fc_ns_gid_pt gidpt;
} *ct;
node_els_trace();
els = efc_els_io_alloc_size(node, sizeof(*ct), EFC_ELS_GID_PT_RSP_LEN);
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ;
els->io.iparam.ct.type = FC_TYPE_CT;
els->io.iparam.ct.df_ctl = 0;
els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT;
els->display_name = "gidpt";
ct = els->io.req.virt;
memset(ct, 0, sizeof(*ct));
fcct_build_req_header(&ct->hdr, FC_NS_GID_PT,
sizeof(struct fc_ns_gid_pt));
ct->gidpt.fn_pt_type = FC_TYPE_FCP;
return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ);
}
void
efc_els_io_cleanup(struct efc_els_io_req *els, int evt, void *arg)
{
/* don't want further events that could come; e.g. abort requests
* from the node state machine; thus, disable state machine
*/
els->els_req_free = true;
efc_node_post_els_resp(els->node, evt, arg);
efc_els_io_free(els);
}
static int
efc_ct_acc_cb(void *arg, u32 length, int status, u32 ext_status)
{
struct efc_els_io_req *els = arg;
efc_els_io_free(els);
return 0;
}
int
efc_send_ct_rsp(struct efc *efc, struct efc_node *node, u16 ox_id,
struct fc_ct_hdr *ct_hdr, u32 cmd_rsp_code,
u32 reason_code, u32 reason_code_explanation)
{
struct efc_els_io_req *els = NULL;
struct fc_ct_hdr *rsp = NULL;
els = efc_els_io_alloc(node, 256);
if (!els) {
efc_log_err(efc, "IO alloc failed\n");
return -EIO;
}
rsp = els->io.rsp.virt;
*rsp = *ct_hdr;
fcct_build_req_header(rsp, cmd_rsp_code, 0);
rsp->ct_reason = reason_code;
rsp->ct_explan = reason_code_explanation;
els->display_name = "ct_rsp";
els->cb = efc_ct_acc_cb;
/* Prepare the IO request details */
els->io.io_type = EFC_DISC_IO_CT_RESP;
els->io.xmit_len = sizeof(*rsp);
els->io.rpi = node->rnode.indicator;
els->io.d_id = node->rnode.fc_id;
memset(&els->io.iparam, 0, sizeof(els->io.iparam));
els->io.iparam.ct.ox_id = ox_id;
els->io.iparam.ct.r_ctl = 3;
els->io.iparam.ct.type = FC_TYPE_CT;
els->io.iparam.ct.df_ctl = 0;
els->io.iparam.ct.timeout = 5;
if (efc->tt.send_els(efc, &els->io)) {
efc_els_io_free(els);
return -EIO;
}
return 0;
}
int
efc_send_bls_acc(struct efc_node *node, struct fc_frame_header *hdr)
{
struct sli_bls_params bls;
struct fc_ba_acc *acc;
struct efc *efc = node->efc;
memset(&bls, 0, sizeof(bls));
bls.ox_id = be16_to_cpu(hdr->fh_ox_id);
bls.rx_id = be16_to_cpu(hdr->fh_rx_id);
bls.s_id = ntoh24(hdr->fh_d_id);
bls.d_id = node->rnode.fc_id;
bls.rpi = node->rnode.indicator;
bls.vpi = node->nport->indicator;
acc = (void *)bls.payload;
acc->ba_ox_id = cpu_to_be16(bls.ox_id);
acc->ba_rx_id = cpu_to_be16(bls.rx_id);
acc->ba_high_seq_cnt = cpu_to_be16(U16_MAX);
return efc->tt.send_bls(efc, FC_RCTL_BA_ACC, &bls);
}
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