scsi: be2iscsi: Update iface handle before any set param

Move mgmt_get_all_if_id before any set param operation.
Rename mgmt_get_all_if_id to beiscsi_if_get_handle.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

4 files changed, 61 insertions, 81 deletions

diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index b725536..1418d6b 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -319,17 +319,8 @@ beiscsi_iface_config_vlan(struct Scsi_Host *shost,
 			  struct iscsi_iface_param_info *iface_param)
 {
 	struct beiscsi_hba *phba = iscsi_host_priv(shost);
-	int ret;
-
-	/* Get the Interface Handle */
-	ret = mgmt_get_all_if_id(phba);
-	if (ret) {
-		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
-			    "BS_%d : Getting Interface Handle Failed\n");
-		return ret;
-	}
+	int ret = -EPERM;
 
-	ret = -EPERM;
 	switch (iface_param->param) {
 	case ISCSI_NET_PARAM_VLAN_ENABLED:
 		ret = 0;
@@ -440,7 +431,7 @@ int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 	struct beiscsi_hba *phba = iscsi_host_priv(shost);
 	struct nlattr *attrib;
 	uint32_t rm_len = dt_len;
-	int ret = 0 ;
+	int ret;
 
 	if (phba->state & BE_ADAPTER_PCI_ERR) {
 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
@@ -448,6 +439,14 @@ int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 		return -EBUSY;
 	}
 
+	/* update interface_handle */
+	ret = beiscsi_if_get_handle(phba);
+	if (ret) {
+		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
+			    "BS_%d : Getting Interface Handle Failed\n");
+		return ret;
+	}
+
 	nla_for_each_attr(attrib, data, dt_len, rm_len) {
 		iface_param = nla_data(attrib);
 
@@ -573,7 +572,7 @@ int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 	struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 	struct beiscsi_hba *phba = iscsi_host_priv(shost);
 	struct be_cmd_get_def_gateway_resp gateway;
-	int len = -ENOSYS;
+	int len = -EPERM;
 
 	if (phba->state & BE_ADAPTER_PCI_ERR) {
 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
@@ -605,8 +604,6 @@ int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 		if (!len)
 			len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
 		break;
-	default:
-		len = -ENOSYS;
 	}
 
 	return len;
@@ -624,7 +621,7 @@ 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;
+	int len;
 
 	beiscsi_log(beiscsi_ep->phba, KERN_INFO,
 		    BEISCSI_LOG_CONFIG,
@@ -642,7 +639,7 @@ int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
 			len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
 		break;
 	default:
-		return -ENOSYS;
+		len = -EPERM;
 	}
 	return len;
 }
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index f05e773..01052d3 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -380,7 +380,7 @@ static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
 	struct mgmt_session_info *boot_sess = &phba->boot_sess;
 	struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];
 	char *str = buf;
-	int rc;
+	int rc = -EPERM;
 
 	switch (type) {
 	case ISCSI_BOOT_TGT_NAME:
@@ -434,9 +434,6 @@ static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
 	case ISCSI_BOOT_TGT_NIC_ASSOC:
 		rc = sprintf(str, "0\n");
 		break;
-	default:
-		rc = -ENOSYS;
-		break;
 	}
 	return rc;
 }
@@ -445,15 +442,12 @@ static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
 {
 	struct beiscsi_hba *phba = data;
 	char *str = buf;
-	int rc;
+	int rc = -EPERM;
 
 	switch (type) {
 	case ISCSI_BOOT_INI_INITIATOR_NAME:
 		rc = sprintf(str, "%s\n", phba->boot_sess.initiator_iscsiname);
 		break;
-	default:
-		rc = -ENOSYS;
-		break;
 	}
 	return rc;
 }
@@ -462,7 +456,7 @@ static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
 {
 	struct beiscsi_hba *phba = data;
 	char *str = buf;
-	int rc;
+	int rc = -EPERM;
 
 	switch (type) {
 	case ISCSI_BOOT_ETH_FLAGS:
@@ -474,9 +468,6 @@ static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
 	case ISCSI_BOOT_ETH_MAC:
 		rc  = beiscsi_get_macaddr(str, phba);
 		break;
-	default:
-		rc = -ENOSYS;
-		break;
 	}
 	return rc;
 }
@@ -484,7 +475,7 @@ static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
 
 static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
 {
-	umode_t rc;
+	umode_t rc = 0;
 
 	switch (type) {
 	case ISCSI_BOOT_TGT_NAME:
@@ -498,24 +489,18 @@ static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
 	case ISCSI_BOOT_TGT_FLAGS:
 		rc = S_IRUGO;
 		break;
-	default:
-		rc = 0;
-		break;
 	}
 	return rc;
 }
 
 static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
 {
-	umode_t rc;
+	umode_t rc = 0;
 
 	switch (type) {
 	case ISCSI_BOOT_INI_INITIATOR_NAME:
 		rc = S_IRUGO;
 		break;
-	default:
-		rc = 0;
-		break;
 	}
 	return rc;
 }
@@ -523,7 +508,7 @@ static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
 
 static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
 {
-	umode_t rc;
+	umode_t rc = 0;
 
 	switch (type) {
 	case ISCSI_BOOT_ETH_FLAGS:
@@ -531,9 +516,6 @@ static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
 	case ISCSI_BOOT_ETH_INDEX:
 		rc = S_IRUGO;
 		break;
-	default:
-		rc = 0;
-		break;
 	}
 	return rc;
 }
diff --git a/drivers/scsi/be2iscsi/be_mgmt.c b/drivers/scsi/be2iscsi/be_mgmt.c
index 5643cf1..fa95525 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.c
+++ b/drivers/scsi/be2iscsi/be_mgmt.c
@@ -609,7 +609,7 @@ unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
 			    bsg_req->rqst_data.h_vendor.vendor_cmd[0]);
 
 		mutex_unlock(&ctrl->mbox_lock);
-		return -ENOSYS;
+		return -EPERM;
 	}
 
 	wrb = alloc_mcc_wrb(phba, &tag);
@@ -892,44 +892,6 @@ int mgmt_open_connection(struct beiscsi_hba *phba,
 	return tag;
 }
 
-unsigned int mgmt_get_all_if_id(struct beiscsi_hba *phba)
-{
-	struct be_ctrl_info *ctrl = &phba->ctrl;
-	struct be_mcc_wrb *wrb;
-	struct be_cmd_get_all_if_id_req *req;
-	struct be_cmd_get_all_if_id_req *pbe_allid;
-	unsigned int tag;
-	int status = 0;
-
-	if (mutex_lock_interruptible(&ctrl->mbox_lock))
-		return -EINTR;
-	wrb = alloc_mcc_wrb(phba, &tag);
-	if (!wrb) {
-		mutex_unlock(&ctrl->mbox_lock);
-		return -ENOMEM;
-	}
-
-	req = embedded_payload(wrb);
-	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
-	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
-			   OPCODE_COMMON_ISCSI_NTWK_GET_ALL_IF_ID,
-			   sizeof(*req));
-	be_mcc_notify(phba, tag);
-	mutex_unlock(&ctrl->mbox_lock);
-
-	status = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
-	if (status) {
-		beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
-			    "BG_%d : Failed in mgmt_get_all_if_id\n");
-		return -EBUSY;
-	}
-
-	pbe_allid = embedded_payload(wrb);
-	phba->interface_handle = pbe_allid->if_hndl_list[0];
-
-	return status;
-}
-
 /*
  * mgmt_exec_nonemb_cmd()- Execute Non Embedded MBX Cmd
  * @phba: Driver priv structure
@@ -1007,6 +969,45 @@ static int mgmt_alloc_cmd_data(struct beiscsi_hba *phba, struct be_dma_mem *cmd,
 	return 0;
 }
 
+unsigned int beiscsi_if_get_handle(struct beiscsi_hba *phba)
+{
+	struct be_ctrl_info *ctrl = &phba->ctrl;
+	struct be_mcc_wrb *wrb;
+	struct be_cmd_get_all_if_id_req *req;
+	struct be_cmd_get_all_if_id_req *pbe_allid;
+	unsigned int tag;
+	int status = 0;
+
+	if (mutex_lock_interruptible(&ctrl->mbox_lock))
+		return -EINTR;
+	wrb = alloc_mcc_wrb(phba, &tag);
+	if (!wrb) {
+		mutex_unlock(&ctrl->mbox_lock);
+		return -ENOMEM;
+	}
+
+	req = embedded_payload(wrb);
+	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
+	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
+			   OPCODE_COMMON_ISCSI_NTWK_GET_ALL_IF_ID,
+			   sizeof(*req));
+	be_mcc_notify(phba, tag);
+	mutex_unlock(&ctrl->mbox_lock);
+
+	status = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
+	if (status) {
+		beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
+			    "BG_%d : %s failed: %d\n", __func__, status);
+		return -EBUSY;
+	}
+
+	pbe_allid = embedded_payload(wrb);
+	/* we now support only one interface per function */
+	phba->interface_handle = pbe_allid->if_hndl_list[0];
+
+	return status;
+}
+
 static int beiscsi_if_mod_gw(struct beiscsi_hba *phba,
 			     u32 action, u32 ip_type, u8 *gw)
 {
@@ -1306,7 +1307,7 @@ int mgmt_get_if_info(struct beiscsi_hba *phba, int ip_type,
 	uint32_t ioctl_size = sizeof(struct be_cmd_get_if_info_resp);
 	int rc;
 
-	rc = mgmt_get_all_if_id(phba);
+	rc = beiscsi_if_get_handle(phba);
 	if (rc)
 		return rc;
 
diff --git a/drivers/scsi/be2iscsi/be_mgmt.h b/drivers/scsi/be2iscsi/be_mgmt.h
index 7637b9e..8ae6a24 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.h
+++ b/drivers/scsi/be2iscsi/be_mgmt.h
@@ -306,7 +306,7 @@ int beiscsi_if_set_gw(struct beiscsi_hba *phba, u32 ip_type, u8 *gw);
 int be_mgmt_get_boot_shandle(struct beiscsi_hba *phba,
 			      unsigned int *s_handle);
 
-unsigned int mgmt_get_all_if_id(struct beiscsi_hba *phba);
+unsigned int beiscsi_if_get_handle(struct beiscsi_hba *phba);
 
 int beiscsi_if_set_vlan(struct beiscsi_hba *phba, uint16_t vlan_tag);