736 lines
20 KiB
C
736 lines
20 KiB
C
/**
|
|
* Copyright (C) 2005 - 2011 Emulex
|
|
* All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation. The full GNU General
|
|
* Public License is included in this distribution in the file called COPYING.
|
|
*
|
|
* Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
|
|
*
|
|
* Contact Information:
|
|
* linux-drivers@emulex.com
|
|
*
|
|
* Emulex
|
|
* 3333 Susan Street
|
|
* Costa Mesa, CA 92626
|
|
*/
|
|
|
|
#include <scsi/libiscsi.h>
|
|
#include <scsi/scsi_transport_iscsi.h>
|
|
#include <scsi/scsi_transport.h>
|
|
#include <scsi/scsi_cmnd.h>
|
|
#include <scsi/scsi_device.h>
|
|
#include <scsi/scsi_host.h>
|
|
#include <scsi/scsi.h>
|
|
|
|
#include "be_iscsi.h"
|
|
|
|
extern struct iscsi_transport beiscsi_iscsi_transport;
|
|
|
|
/**
|
|
* beiscsi_session_create - creates a new iscsi session
|
|
* @cmds_max: max commands supported
|
|
* @qdepth: max queue depth supported
|
|
* @initial_cmdsn: initial iscsi CMDSN
|
|
*/
|
|
struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
|
|
u16 cmds_max,
|
|
u16 qdepth,
|
|
u32 initial_cmdsn)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct iscsi_cls_session *cls_session;
|
|
struct beiscsi_hba *phba;
|
|
struct iscsi_session *sess;
|
|
struct beiscsi_session *beiscsi_sess;
|
|
struct beiscsi_io_task *io_task;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_session_create\n");
|
|
|
|
if (!ep) {
|
|
SE_DEBUG(DBG_LVL_1, "beiscsi_session_create: invalid ep\n");
|
|
return NULL;
|
|
}
|
|
beiscsi_ep = ep->dd_data;
|
|
phba = beiscsi_ep->phba;
|
|
shost = phba->shost;
|
|
if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
|
|
shost_printk(KERN_ERR, shost, "Cannot handle %d cmds."
|
|
"Max cmds per session supported is %d. Using %d. "
|
|
"\n", cmds_max,
|
|
beiscsi_ep->phba->params.wrbs_per_cxn,
|
|
beiscsi_ep->phba->params.wrbs_per_cxn);
|
|
cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
|
|
}
|
|
|
|
cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
|
|
shost, cmds_max,
|
|
sizeof(*beiscsi_sess),
|
|
sizeof(*io_task),
|
|
initial_cmdsn, ISCSI_MAX_TARGET);
|
|
if (!cls_session)
|
|
return NULL;
|
|
sess = cls_session->dd_data;
|
|
beiscsi_sess = sess->dd_data;
|
|
beiscsi_sess->bhs_pool = pci_pool_create("beiscsi_bhs_pool",
|
|
phba->pcidev,
|
|
sizeof(struct be_cmd_bhs),
|
|
64, 0);
|
|
if (!beiscsi_sess->bhs_pool)
|
|
goto destroy_sess;
|
|
|
|
return cls_session;
|
|
destroy_sess:
|
|
iscsi_session_teardown(cls_session);
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_session_destroy - destroys iscsi session
|
|
* @cls_session: pointer to iscsi cls session
|
|
*
|
|
* Destroys iSCSI session instance and releases
|
|
* resources allocated for it.
|
|
*/
|
|
void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
|
|
{
|
|
struct iscsi_session *sess = cls_session->dd_data;
|
|
struct beiscsi_session *beiscsi_sess = sess->dd_data;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_session_destroy\n");
|
|
pci_pool_destroy(beiscsi_sess->bhs_pool);
|
|
iscsi_session_teardown(cls_session);
|
|
}
|
|
|
|
/**
|
|
* beiscsi_conn_create - create an instance of iscsi connection
|
|
* @cls_session: ptr to iscsi_cls_session
|
|
* @cid: iscsi cid
|
|
*/
|
|
struct iscsi_cls_conn *
|
|
beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
|
|
{
|
|
struct beiscsi_hba *phba;
|
|
struct Scsi_Host *shost;
|
|
struct iscsi_cls_conn *cls_conn;
|
|
struct beiscsi_conn *beiscsi_conn;
|
|
struct iscsi_conn *conn;
|
|
struct iscsi_session *sess;
|
|
struct beiscsi_session *beiscsi_sess;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_create ,cid"
|
|
"from iscsi layer=%d\n", cid);
|
|
shost = iscsi_session_to_shost(cls_session);
|
|
phba = iscsi_host_priv(shost);
|
|
|
|
cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
|
|
if (!cls_conn)
|
|
return NULL;
|
|
|
|
conn = cls_conn->dd_data;
|
|
beiscsi_conn = conn->dd_data;
|
|
beiscsi_conn->ep = NULL;
|
|
beiscsi_conn->phba = phba;
|
|
beiscsi_conn->conn = conn;
|
|
sess = cls_session->dd_data;
|
|
beiscsi_sess = sess->dd_data;
|
|
beiscsi_conn->beiscsi_sess = beiscsi_sess;
|
|
return cls_conn;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
|
|
* @beiscsi_conn: The pointer to beiscsi_conn structure
|
|
* @phba: The phba instance
|
|
* @cid: The cid to free
|
|
*/
|
|
static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
|
|
struct beiscsi_conn *beiscsi_conn,
|
|
unsigned int cid)
|
|
{
|
|
if (phba->conn_table[cid]) {
|
|
SE_DEBUG(DBG_LVL_1,
|
|
"Connection table already occupied. Detected clash\n");
|
|
return -EINVAL;
|
|
} else {
|
|
SE_DEBUG(DBG_LVL_8, "phba->conn_table[%d]=%p(beiscsi_conn)\n",
|
|
cid, beiscsi_conn);
|
|
phba->conn_table[cid] = beiscsi_conn;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
|
|
* @cls_session: pointer to iscsi cls session
|
|
* @cls_conn: pointer to iscsi cls conn
|
|
* @transport_fd: EP handle(64 bit)
|
|
*
|
|
* This function binds the TCP Conn with iSCSI Connection and Session.
|
|
*/
|
|
int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
|
|
struct iscsi_cls_conn *cls_conn,
|
|
u64 transport_fd, int is_leading)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
|
|
struct Scsi_Host *shost =
|
|
(struct Scsi_Host *)iscsi_session_to_shost(cls_session);
|
|
struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost);
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct iscsi_endpoint *ep;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_bind\n");
|
|
ep = iscsi_lookup_endpoint(transport_fd);
|
|
if (!ep)
|
|
return -EINVAL;
|
|
|
|
beiscsi_ep = ep->dd_data;
|
|
|
|
if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
|
|
return -EINVAL;
|
|
|
|
if (beiscsi_ep->phba != phba) {
|
|
SE_DEBUG(DBG_LVL_8,
|
|
"beiscsi_ep->hba=%p not equal to phba=%p\n",
|
|
beiscsi_ep->phba, phba);
|
|
return -EEXIST;
|
|
}
|
|
|
|
beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
|
|
beiscsi_conn->ep = beiscsi_ep;
|
|
beiscsi_ep->conn = beiscsi_conn;
|
|
SE_DEBUG(DBG_LVL_8, "beiscsi_conn=%p conn=%p ep_cid=%d\n",
|
|
beiscsi_conn, conn, beiscsi_ep->ep_cid);
|
|
return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_get_param - get the iscsi parameter
|
|
* @ep: pointer to iscsi ep
|
|
* @param: parameter type identifier
|
|
* @buf: buffer pointer
|
|
*
|
|
* returns iscsi parameter
|
|
*/
|
|
int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
|
|
enum iscsi_param param, char *buf)
|
|
{
|
|
struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
|
|
int len = 0;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_param, param= %d\n", param);
|
|
|
|
switch (param) {
|
|
case ISCSI_PARAM_CONN_PORT:
|
|
len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
|
|
break;
|
|
case ISCSI_PARAM_CONN_ADDRESS:
|
|
if (beiscsi_ep->ip_type == BE2_IPV4)
|
|
len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
|
|
else
|
|
len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
|
|
break;
|
|
default:
|
|
return -ENOSYS;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
|
|
enum iscsi_param param, char *buf, int buflen)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct iscsi_session *session = conn->session;
|
|
int ret;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_set_param, param= %d\n", param);
|
|
ret = iscsi_set_param(cls_conn, param, buf, buflen);
|
|
if (ret)
|
|
return ret;
|
|
/*
|
|
* If userspace tried to set the value to higher than we can
|
|
* support override here.
|
|
*/
|
|
switch (param) {
|
|
case ISCSI_PARAM_FIRST_BURST:
|
|
if (session->first_burst > 8192)
|
|
session->first_burst = 8192;
|
|
break;
|
|
case ISCSI_PARAM_MAX_RECV_DLENGTH:
|
|
if (conn->max_recv_dlength > 65536)
|
|
conn->max_recv_dlength = 65536;
|
|
break;
|
|
case ISCSI_PARAM_MAX_BURST:
|
|
if (session->max_burst > 262144)
|
|
session->max_burst = 262144;
|
|
break;
|
|
case ISCSI_PARAM_MAX_XMIT_DLENGTH:
|
|
if ((conn->max_xmit_dlength > 65536) ||
|
|
(conn->max_xmit_dlength == 0))
|
|
conn->max_xmit_dlength = 65536;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_get_host_param - get the iscsi parameter
|
|
* @shost: pointer to scsi_host structure
|
|
* @param: parameter type identifier
|
|
* @buf: buffer pointer
|
|
*
|
|
* returns host parameter
|
|
*/
|
|
int beiscsi_get_host_param(struct Scsi_Host *shost,
|
|
enum iscsi_host_param param, char *buf)
|
|
{
|
|
struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost);
|
|
int status = 0;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_get_host_param, param= %d\n", param);
|
|
switch (param) {
|
|
case ISCSI_HOST_PARAM_HWADDRESS:
|
|
status = beiscsi_get_macaddr(buf, phba);
|
|
if (status < 0) {
|
|
SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n");
|
|
return status;
|
|
}
|
|
break;
|
|
default:
|
|
return iscsi_host_get_param(shost, param, buf);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
|
|
{
|
|
struct be_cmd_resp_get_mac_addr *resp;
|
|
struct be_mcc_wrb *wrb;
|
|
unsigned int tag, wrb_num;
|
|
unsigned short status, extd_status;
|
|
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
|
|
int rc;
|
|
|
|
if (phba->read_mac_address)
|
|
return sysfs_format_mac(buf, phba->mac_address,
|
|
ETH_ALEN);
|
|
|
|
tag = be_cmd_get_mac_addr(phba);
|
|
if (!tag) {
|
|
SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
|
|
return -EBUSY;
|
|
} else
|
|
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
|
|
phba->ctrl.mcc_numtag[tag]);
|
|
|
|
wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
|
|
extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
|
|
status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
|
|
if (status || extd_status) {
|
|
SE_DEBUG(DBG_LVL_1, "Failed to get be_cmd_get_mac_addr"
|
|
" status = %d extd_status = %d\n",
|
|
status, extd_status);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
return -EAGAIN;
|
|
}
|
|
wrb = queue_get_wrb(mccq, wrb_num);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
resp = embedded_payload(wrb);
|
|
memcpy(phba->mac_address, resp->mac_address, ETH_ALEN);
|
|
rc = sysfs_format_mac(buf, phba->mac_address,
|
|
ETH_ALEN);
|
|
phba->read_mac_address = 1;
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* beiscsi_conn_get_stats - get the iscsi stats
|
|
* @cls_conn: pointer to iscsi cls conn
|
|
* @stats: pointer to iscsi_stats structure
|
|
*
|
|
* returns iscsi stats
|
|
*/
|
|
void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
|
|
struct iscsi_stats *stats)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_stats\n");
|
|
stats->txdata_octets = conn->txdata_octets;
|
|
stats->rxdata_octets = conn->rxdata_octets;
|
|
stats->dataout_pdus = conn->dataout_pdus_cnt;
|
|
stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
|
|
stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
|
|
stats->datain_pdus = conn->datain_pdus_cnt;
|
|
stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
|
|
stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
|
|
stats->r2t_pdus = conn->r2t_pdus_cnt;
|
|
stats->digest_err = 0;
|
|
stats->timeout_err = 0;
|
|
stats->custom_length = 0;
|
|
strcpy(stats->custom[0].desc, "eh_abort_cnt");
|
|
stats->custom[0].value = conn->eh_abort_cnt;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_set_params_for_offld - get the parameters for offload
|
|
* @beiscsi_conn: pointer to beiscsi_conn
|
|
* @params: pointer to offload_params structure
|
|
*/
|
|
static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
|
|
struct beiscsi_offload_params *params)
|
|
{
|
|
struct iscsi_conn *conn = beiscsi_conn->conn;
|
|
struct iscsi_session *session = conn->session;
|
|
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
|
|
params, session->max_burst);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params,
|
|
max_send_data_segment_length, params,
|
|
conn->max_xmit_dlength);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
|
|
params, session->first_burst);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
|
|
session->erl);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
|
|
conn->datadgst_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
|
|
conn->hdrdgst_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
|
|
session->initial_r2t_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
|
|
session->imm_data_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
|
|
(conn->exp_statsn - 1));
|
|
}
|
|
|
|
/**
|
|
* beiscsi_conn_start - offload of session to chip
|
|
* @cls_conn: pointer to beiscsi_conn
|
|
*/
|
|
int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct beiscsi_offload_params params;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_start\n");
|
|
memset(¶ms, 0, sizeof(struct beiscsi_offload_params));
|
|
beiscsi_ep = beiscsi_conn->ep;
|
|
if (!beiscsi_ep)
|
|
SE_DEBUG(DBG_LVL_1, "In beiscsi_conn_start , no beiscsi_ep\n");
|
|
|
|
beiscsi_conn->login_in_progress = 0;
|
|
beiscsi_set_params_for_offld(beiscsi_conn, ¶ms);
|
|
beiscsi_offload_connection(beiscsi_conn, ¶ms);
|
|
iscsi_conn_start(cls_conn);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_get_cid - Allocate a cid
|
|
* @phba: The phba instance
|
|
*/
|
|
static int beiscsi_get_cid(struct beiscsi_hba *phba)
|
|
{
|
|
unsigned short cid = 0xFFFF;
|
|
|
|
if (!phba->avlbl_cids)
|
|
return cid;
|
|
|
|
cid = phba->cid_array[phba->cid_alloc++];
|
|
if (phba->cid_alloc == phba->params.cxns_per_ctrl)
|
|
phba->cid_alloc = 0;
|
|
phba->avlbl_cids--;
|
|
return cid;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_put_cid - Free the cid
|
|
* @phba: The phba for which the cid is being freed
|
|
* @cid: The cid to free
|
|
*/
|
|
static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
|
|
{
|
|
phba->avlbl_cids++;
|
|
phba->cid_array[phba->cid_free++] = cid;
|
|
if (phba->cid_free == phba->params.cxns_per_ctrl)
|
|
phba->cid_free = 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_free_ep - free endpoint
|
|
* @ep: pointer to iscsi endpoint structure
|
|
*/
|
|
static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
|
|
{
|
|
struct beiscsi_hba *phba = beiscsi_ep->phba;
|
|
|
|
beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
|
|
beiscsi_ep->phba = NULL;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_open_conn - Ask FW to open a TCP connection
|
|
* @ep: endpoint to be used
|
|
* @src_addr: The source IP address
|
|
* @dst_addr: The Destination IP address
|
|
*
|
|
* Asks the FW to open a TCP connection
|
|
*/
|
|
static int beiscsi_open_conn(struct iscsi_endpoint *ep,
|
|
struct sockaddr *src_addr,
|
|
struct sockaddr *dst_addr, int non_blocking)
|
|
{
|
|
struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
|
|
struct beiscsi_hba *phba = beiscsi_ep->phba;
|
|
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
|
|
struct be_mcc_wrb *wrb;
|
|
struct tcp_connect_and_offload_out *ptcpcnct_out;
|
|
unsigned short status, extd_status;
|
|
struct be_dma_mem nonemb_cmd;
|
|
unsigned int tag, wrb_num;
|
|
int ret = -ENOMEM;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn\n");
|
|
beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
|
|
if (beiscsi_ep->ep_cid == 0xFFFF) {
|
|
SE_DEBUG(DBG_LVL_1, "No free cid available\n");
|
|
return ret;
|
|
}
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn, ep_cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
phba->ep_array[beiscsi_ep->ep_cid -
|
|
phba->fw_config.iscsi_cid_start] = ep;
|
|
if (beiscsi_ep->ep_cid > (phba->fw_config.iscsi_cid_start +
|
|
phba->params.cxns_per_ctrl * 2)) {
|
|
SE_DEBUG(DBG_LVL_1, "Failed in allocate iscsi cid\n");
|
|
goto free_ep;
|
|
}
|
|
|
|
beiscsi_ep->cid_vld = 0;
|
|
nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
|
|
sizeof(struct tcp_connect_and_offload_in),
|
|
&nonemb_cmd.dma);
|
|
if (nonemb_cmd.va == NULL) {
|
|
SE_DEBUG(DBG_LVL_1,
|
|
"Failed to allocate memory for mgmt_open_connection"
|
|
"\n");
|
|
beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
|
|
return -ENOMEM;
|
|
}
|
|
nonemb_cmd.size = sizeof(struct tcp_connect_and_offload_in);
|
|
memset(nonemb_cmd.va, 0, nonemb_cmd.size);
|
|
tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
|
|
if (!tag) {
|
|
SE_DEBUG(DBG_LVL_1,
|
|
"mgmt_open_connection Failed for cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
return -EAGAIN;
|
|
} else {
|
|
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
|
|
phba->ctrl.mcc_numtag[tag]);
|
|
}
|
|
wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
|
|
extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
|
|
status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
|
|
if (status || extd_status) {
|
|
SE_DEBUG(DBG_LVL_1, "mgmt_open_connection Failed"
|
|
" status = %d extd_status = %d\n",
|
|
status, extd_status);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
goto free_ep;
|
|
} else {
|
|
wrb = queue_get_wrb(mccq, wrb_num);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
|
|
ptcpcnct_out = embedded_payload(wrb);
|
|
beiscsi_ep = ep->dd_data;
|
|
beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
|
|
beiscsi_ep->cid_vld = 1;
|
|
SE_DEBUG(DBG_LVL_8, "mgmt_open_connection Success\n");
|
|
}
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
return 0;
|
|
|
|
free_ep:
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
return -EBUSY;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_connect - Ask chip to create TCP Conn
|
|
* @scsi_host: Pointer to scsi_host structure
|
|
* @dst_addr: The IP address of Target
|
|
* @non_blocking: blocking or non-blocking call
|
|
*
|
|
* This routines first asks chip to create a connection and then allocates an EP
|
|
*/
|
|
struct iscsi_endpoint *
|
|
beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
|
|
int non_blocking)
|
|
{
|
|
struct beiscsi_hba *phba;
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct iscsi_endpoint *ep;
|
|
int ret;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_connect\n");
|
|
if (shost)
|
|
phba = iscsi_host_priv(shost);
|
|
else {
|
|
ret = -ENXIO;
|
|
SE_DEBUG(DBG_LVL_1, "shost is NULL\n");
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
if (phba->state != BE_ADAPTER_UP) {
|
|
ret = -EBUSY;
|
|
SE_DEBUG(DBG_LVL_1, "The Adapter state is Not UP\n");
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
|
|
if (!ep) {
|
|
ret = -ENOMEM;
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
beiscsi_ep = ep->dd_data;
|
|
beiscsi_ep->phba = phba;
|
|
beiscsi_ep->openiscsi_ep = ep;
|
|
ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
|
|
if (ret) {
|
|
SE_DEBUG(DBG_LVL_1, "Failed in beiscsi_open_conn\n");
|
|
goto free_ep;
|
|
}
|
|
|
|
return ep;
|
|
|
|
free_ep:
|
|
iscsi_destroy_endpoint(ep);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_poll - Poll to see if connection is established
|
|
* @ep: endpoint to be used
|
|
* @timeout_ms: timeout specified in millisecs
|
|
*
|
|
* Poll to see if TCP connection established
|
|
*/
|
|
int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
|
|
{
|
|
struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_poll\n");
|
|
if (beiscsi_ep->cid_vld == 1)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_close_conn - Upload the connection
|
|
* @ep: The iscsi endpoint
|
|
* @flag: The type of connection closure
|
|
*/
|
|
static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag)
|
|
{
|
|
int ret = 0;
|
|
unsigned int tag;
|
|
struct beiscsi_hba *phba = beiscsi_ep->phba;
|
|
|
|
tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
|
|
if (!tag) {
|
|
SE_DEBUG(DBG_LVL_8, "upload failed for cid 0x%x\n",
|
|
beiscsi_ep->ep_cid);
|
|
ret = -EAGAIN;
|
|
} else {
|
|
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
|
|
phba->ctrl.mcc_numtag[tag]);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
|
|
* @phba: The phba instance
|
|
* @cid: The cid to free
|
|
*/
|
|
static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
|
|
unsigned int cid)
|
|
{
|
|
if (phba->conn_table[cid])
|
|
phba->conn_table[cid] = NULL;
|
|
else {
|
|
SE_DEBUG(DBG_LVL_8, "Connection table Not occupied.\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_disconnect - Tears down the TCP connection
|
|
* @ep: endpoint to be used
|
|
*
|
|
* Tears down the TCP connection
|
|
*/
|
|
void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
|
|
{
|
|
struct beiscsi_conn *beiscsi_conn;
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct beiscsi_hba *phba;
|
|
unsigned int tag;
|
|
unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
|
|
|
|
beiscsi_ep = ep->dd_data;
|
|
phba = beiscsi_ep->phba;
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect for ep_cid = %d\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
if (!beiscsi_ep->conn) {
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect, no "
|
|
"beiscsi_ep\n");
|
|
return;
|
|
}
|
|
beiscsi_conn = beiscsi_ep->conn;
|
|
iscsi_suspend_queue(beiscsi_conn->conn);
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect ep_cid = %d\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
tag = mgmt_invalidate_connection(phba, beiscsi_ep,
|
|
beiscsi_ep->ep_cid, 1,
|
|
savecfg_flag);
|
|
if (!tag) {
|
|
SE_DEBUG(DBG_LVL_1,
|
|
"mgmt_invalidate_connection Failed for cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
} else {
|
|
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
|
|
phba->ctrl.mcc_numtag[tag]);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
}
|
|
|
|
beiscsi_close_conn(beiscsi_ep, CONNECTION_UPLOAD_GRACEFUL);
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
|
|
iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
|
|
}
|