/**
* 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 = iscsi2_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;
if (beiscsi_open_conn(ep, NULL, dst_addr, non_blocking)) {
SE_DEBUG(DBG_LVL_1, "Failed in beiscsi_open_conn \n");
ret = -ENOMEM;
goto free_ep;
}
return ep;
free_ep:
beiscsi_free_ep(beiscsi_ep);
return ERR_PTR(ret);
}
/**
* 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);
}
/**
* beiscsi_conn_stop - Invalidate and stop the connection
* @cls_conn: pointer to get iscsi_conn
* @flag: The type of connection closure
*/
void beiscsi_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
{
struct iscsi_conn *conn = cls_conn->dd_data;
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_endpoint *beiscsi_ep;
struct iscsi_session *session = conn->session;
struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
struct beiscsi_hba *phba = iscsi_host_priv(shost);
unsigned int tag;
unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
beiscsi_ep = beiscsi_conn->ep;
if (!beiscsi_ep) {
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop , no beiscsi_ep\n");
return;
}
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop ep_cid = %d\n",
beiscsi_ep->ep_cid);
tag = mgmt_invalidate_connection(phba, beiscsi_ep,
beiscsi_ep->ep_cid, 0,
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);
iscsi2_destroy_endpoint(beiscsi_ep->openiscsi_ep);
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop for ep_cid = %d\n", beiscsi_ep->ep_cid);
beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
iscsi2_conn_stop(cls_conn, flag);
}
/**
* 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;
}
