if (scsi_add_host(shost, NULL))
goto add_host_fail;
+ if (!try_module_get(iscsit->owner))
+ goto cls_session_fail;
+
cls_session = iscsi_create_session(shost, iscsit, 0);
if (!cls_session)
- goto cls_session_fail;
+ goto module_put;
*(unsigned long*)shost->hostdata = (unsigned long)cls_session;
return cls_session;
+module_put:
+ module_put(iscsit->owner);
cls_session_fail:
scsi_remove_host(shost);
add_host_fail:
iscsi_destroy_session(cls_session);
scsi_host_put(shost);
+ module_put(cls_session->transport->owner);
}
EXPORT_SYMBOL_GPL(iscsi_session_teardown);
}
EXPORT_SYMBOL_GPL(iscsi_conn_bind);
+
+int iscsi_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;
+ uint32_t value;
+
+ switch(param) {
+ case ISCSI_PARAM_MAX_RECV_DLENGTH:
+ sscanf(buf, "%d", &conn->max_recv_dlength);
+ break;
+ case ISCSI_PARAM_MAX_XMIT_DLENGTH:
+ sscanf(buf, "%d", &conn->max_xmit_dlength);
+ break;
+ case ISCSI_PARAM_HDRDGST_EN:
+ sscanf(buf, "%d", &conn->hdrdgst_en);
+ break;
+ case ISCSI_PARAM_DATADGST_EN:
+ sscanf(buf, "%d", &conn->datadgst_en);
+ break;
+ case ISCSI_PARAM_INITIAL_R2T_EN:
+ sscanf(buf, "%d", &session->initial_r2t_en);
+ break;
+ case ISCSI_PARAM_MAX_R2T:
+ sscanf(buf, "%d", &session->max_r2t);
+ break;
+ case ISCSI_PARAM_IMM_DATA_EN:
+ sscanf(buf, "%d", &session->imm_data_en);
+ break;
+ case ISCSI_PARAM_FIRST_BURST:
+ sscanf(buf, "%d", &session->first_burst);
+ break;
+ case ISCSI_PARAM_MAX_BURST:
+ sscanf(buf, "%d", &session->max_burst);
+ break;
+ case ISCSI_PARAM_PDU_INORDER_EN:
+ sscanf(buf, "%d", &session->pdu_inorder_en);
+ break;
+ case ISCSI_PARAM_DATASEQ_INORDER_EN:
+ sscanf(buf, "%d", &session->dataseq_inorder_en);
+ break;
+ case ISCSI_PARAM_ERL:
+ sscanf(buf, "%d", &session->erl);
+ break;
+ case ISCSI_PARAM_IFMARKER_EN:
+ sscanf(buf, "%d", &value);
+ BUG_ON(value);
+ break;
+ case ISCSI_PARAM_OFMARKER_EN:
+ sscanf(buf, "%d", &value);
+ BUG_ON(value);
+ break;
+ case ISCSI_PARAM_EXP_STATSN:
+ sscanf(buf, "%u", &conn->exp_statsn);
+ break;
+ case ISCSI_PARAM_TARGET_NAME:
+ /* this should not change between logins */
+ if (session->targetname)
+ break;
+
+ session->targetname = kstrdup(buf, GFP_KERNEL);
+ if (!session->targetname)
+ return -ENOMEM;
+ break;
+ case ISCSI_PARAM_TPGT:
+ sscanf(buf, "%d", &session->tpgt);
+ break;
+ case ISCSI_PARAM_PERSISTENT_PORT:
+ sscanf(buf, "%d", &conn->persistent_port);
+ break;
+ case ISCSI_PARAM_PERSISTENT_ADDRESS:
+ /*
+ * this is the address returned in discovery so it should
+ * not change between logins.
+ */
+ if (conn->persistent_address)
+ break;
+
+ conn->persistent_address = kstrdup(buf, GFP_KERNEL);
+ if (!conn->persistent_address)
+ return -ENOMEM;
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(iscsi_set_param);
+
+int iscsi_session_get_param(struct iscsi_cls_session *cls_session,
+ enum iscsi_param param, char *buf)
+{
+ struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
+ struct iscsi_session *session = iscsi_hostdata(shost->hostdata);
+ int len;
+
+ switch(param) {
+ case ISCSI_PARAM_INITIAL_R2T_EN:
+ len = sprintf(buf, "%d\n", session->initial_r2t_en);
+ break;
+ case ISCSI_PARAM_MAX_R2T:
+ len = sprintf(buf, "%hu\n", session->max_r2t);
+ break;
+ case ISCSI_PARAM_IMM_DATA_EN:
+ len = sprintf(buf, "%d\n", session->imm_data_en);
+ break;
+ case ISCSI_PARAM_FIRST_BURST:
+ len = sprintf(buf, "%u\n", session->first_burst);
+ break;
+ case ISCSI_PARAM_MAX_BURST:
+ len = sprintf(buf, "%u\n", session->max_burst);
+ break;
+ case ISCSI_PARAM_PDU_INORDER_EN:
+ len = sprintf(buf, "%d\n", session->pdu_inorder_en);
+ break;
+ case ISCSI_PARAM_DATASEQ_INORDER_EN:
+ len = sprintf(buf, "%d\n", session->dataseq_inorder_en);
+ break;
+ case ISCSI_PARAM_ERL:
+ len = sprintf(buf, "%d\n", session->erl);
+ break;
+ case ISCSI_PARAM_TARGET_NAME:
+ len = sprintf(buf, "%s\n", session->targetname);
+ break;
+ case ISCSI_PARAM_TPGT:
+ len = sprintf(buf, "%d\n", session->tpgt);
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return len;
+}
+EXPORT_SYMBOL_GPL(iscsi_session_get_param);
+
+int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
+ enum iscsi_param param, char *buf)
+{
+ struct iscsi_conn *conn = cls_conn->dd_data;
+ int len;
+
+ switch(param) {
+ case ISCSI_PARAM_MAX_RECV_DLENGTH:
+ len = sprintf(buf, "%u\n", conn->max_recv_dlength);
+ break;
+ case ISCSI_PARAM_MAX_XMIT_DLENGTH:
+ len = sprintf(buf, "%u\n", conn->max_xmit_dlength);
+ break;
+ case ISCSI_PARAM_HDRDGST_EN:
+ len = sprintf(buf, "%d\n", conn->hdrdgst_en);
+ break;
+ case ISCSI_PARAM_DATADGST_EN:
+ len = sprintf(buf, "%d\n", conn->datadgst_en);
+ break;
+ case ISCSI_PARAM_IFMARKER_EN:
+ len = sprintf(buf, "%d\n", conn->ifmarker_en);
+ break;
+ case ISCSI_PARAM_OFMARKER_EN:
+ len = sprintf(buf, "%d\n", conn->ofmarker_en);
+ break;
+ case ISCSI_PARAM_EXP_STATSN:
+ len = sprintf(buf, "%u\n", conn->exp_statsn);
+ break;
+ case ISCSI_PARAM_PERSISTENT_PORT:
+ len = sprintf(buf, "%d\n", conn->persistent_port);
+ break;
+ case ISCSI_PARAM_PERSISTENT_ADDRESS:
+ len = sprintf(buf, "%s\n", conn->persistent_address);
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return len;
+}
+EXPORT_SYMBOL_GPL(iscsi_conn_get_param);
+
MODULE_AUTHOR("Mike Christie");
MODULE_DESCRIPTION("iSCSI library functions");
MODULE_LICENSE("GPL");
projects / powerpc.git / blobdiff