[SCSI] iscsi: fixup set/get param functions
Reduce duplication in the software iscsi_transport modules by adding a libiscsi function to handle the common grunt work. This also has the drivers return specifc -EXXX values for different errors so userspace can finally handle them in a sane way. Also just pass the sysfs buffers to the drivers so HW iscsi can get/set its string values, like targetname, and initiatorname. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Mike Christie
James Bottomley
parent
01cb225dad
commit
a54a52caad
@ -1697,6 +1697,185 @@ int iscsi_conn_bind(struct iscsi_cls_session *cls_session,
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}
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EXPORT_SYMBOL_GPL(iscsi_conn_bind);
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int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
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enum iscsi_param param, char *buf, int buflen)
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{
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struct iscsi_conn *conn = cls_conn->dd_data;
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struct iscsi_session *session = conn->session;
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uint32_t value;
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switch(param) {
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case ISCSI_PARAM_MAX_RECV_DLENGTH:
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sscanf(buf, "%d", &conn->max_recv_dlength);
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break;
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case ISCSI_PARAM_MAX_XMIT_DLENGTH:
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sscanf(buf, "%d", &conn->max_xmit_dlength);
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break;
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case ISCSI_PARAM_HDRDGST_EN:
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sscanf(buf, "%d", &conn->hdrdgst_en);
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break;
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case ISCSI_PARAM_DATADGST_EN:
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sscanf(buf, "%d", &conn->datadgst_en);
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break;
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case ISCSI_PARAM_INITIAL_R2T_EN:
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sscanf(buf, "%d", &session->initial_r2t_en);
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break;
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case ISCSI_PARAM_MAX_R2T:
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sscanf(buf, "%d", &session->max_r2t);
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break;
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case ISCSI_PARAM_IMM_DATA_EN:
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sscanf(buf, "%d", &session->imm_data_en);
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break;
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case ISCSI_PARAM_FIRST_BURST:
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sscanf(buf, "%d", &session->first_burst);
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break;
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case ISCSI_PARAM_MAX_BURST:
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sscanf(buf, "%d", &session->max_burst);
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break;
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case ISCSI_PARAM_PDU_INORDER_EN:
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sscanf(buf, "%d", &session->pdu_inorder_en);
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break;
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case ISCSI_PARAM_DATASEQ_INORDER_EN:
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sscanf(buf, "%d", &session->dataseq_inorder_en);
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break;
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case ISCSI_PARAM_ERL:
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sscanf(buf, "%d", &session->erl);
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break;
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case ISCSI_PARAM_IFMARKER_EN:
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sscanf(buf, "%d", &value);
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BUG_ON(value);
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break;
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case ISCSI_PARAM_OFMARKER_EN:
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sscanf(buf, "%d", &value);
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BUG_ON(value);
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break;
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case ISCSI_PARAM_EXP_STATSN:
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sscanf(buf, "%u", &conn->exp_statsn);
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break;
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case ISCSI_PARAM_TARGET_NAME:
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/* this should not change between logins */
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if (session->targetname)
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break;
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session->targetname = kstrdup(buf, GFP_KERNEL);
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if (!session->targetname)
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return -ENOMEM;
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break;
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case ISCSI_PARAM_TPGT:
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sscanf(buf, "%d", &session->tpgt);
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break;
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case ISCSI_PARAM_PERSISTENT_PORT:
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sscanf(buf, "%d", &conn->persistent_port);
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break;
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case ISCSI_PARAM_PERSISTENT_ADDRESS:
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/*
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* this is the address returned in discovery so it should
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* not change between logins.
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*/
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if (conn->persistent_address)
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break;
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conn->persistent_address = kstrdup(buf, GFP_KERNEL);
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if (!conn->persistent_address)
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return -ENOMEM;
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break;
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default:
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return -ENOSYS;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(iscsi_set_param);
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int iscsi_session_get_param(struct iscsi_cls_session *cls_session,
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enum iscsi_param param, char *buf)
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{
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struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
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struct iscsi_session *session = iscsi_hostdata(shost->hostdata);
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int len;
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switch(param) {
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case ISCSI_PARAM_INITIAL_R2T_EN:
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len = sprintf(buf, "%d\n", session->initial_r2t_en);
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break;
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case ISCSI_PARAM_MAX_R2T:
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len = sprintf(buf, "%hu\n", session->max_r2t);
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break;
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case ISCSI_PARAM_IMM_DATA_EN:
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len = sprintf(buf, "%d\n", session->imm_data_en);
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break;
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case ISCSI_PARAM_FIRST_BURST:
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len = sprintf(buf, "%u\n", session->first_burst);
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break;
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case ISCSI_PARAM_MAX_BURST:
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len = sprintf(buf, "%u\n", session->max_burst);
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break;
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case ISCSI_PARAM_PDU_INORDER_EN:
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len = sprintf(buf, "%d\n", session->pdu_inorder_en);
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break;
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case ISCSI_PARAM_DATASEQ_INORDER_EN:
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len = sprintf(buf, "%d\n", session->dataseq_inorder_en);
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break;
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case ISCSI_PARAM_ERL:
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len = sprintf(buf, "%d\n", session->erl);
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break;
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case ISCSI_PARAM_TARGET_NAME:
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len = sprintf(buf, "%s\n", session->targetname);
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break;
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case ISCSI_PARAM_TPGT:
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len = sprintf(buf, "%d\n", session->tpgt);
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break;
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default:
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return -ENOSYS;
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}
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return len;
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}
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EXPORT_SYMBOL_GPL(iscsi_session_get_param);
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int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
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enum iscsi_param param, char *buf)
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{
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struct iscsi_conn *conn = cls_conn->dd_data;
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int len;
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switch(param) {
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case ISCSI_PARAM_MAX_RECV_DLENGTH:
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len = sprintf(buf, "%u\n", conn->max_recv_dlength);
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break;
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case ISCSI_PARAM_MAX_XMIT_DLENGTH:
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len = sprintf(buf, "%u\n", conn->max_xmit_dlength);
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break;
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case ISCSI_PARAM_HDRDGST_EN:
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len = sprintf(buf, "%d\n", conn->hdrdgst_en);
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break;
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case ISCSI_PARAM_DATADGST_EN:
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len = sprintf(buf, "%d\n", conn->datadgst_en);
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break;
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case ISCSI_PARAM_IFMARKER_EN:
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len = sprintf(buf, "%d\n", conn->ifmarker_en);
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break;
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case ISCSI_PARAM_OFMARKER_EN:
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len = sprintf(buf, "%d\n", conn->ofmarker_en);
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break;
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case ISCSI_PARAM_EXP_STATSN:
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len = sprintf(buf, "%u\n", conn->exp_statsn);
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break;
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case ISCSI_PARAM_PERSISTENT_PORT:
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len = sprintf(buf, "%d\n", conn->persistent_port);
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break;
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case ISCSI_PARAM_PERSISTENT_ADDRESS:
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len = sprintf(buf, "%s\n", conn->persistent_address);
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break;
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default:
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return -ENOSYS;
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}
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return len;
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}
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EXPORT_SYMBOL_GPL(iscsi_conn_get_param);
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MODULE_AUTHOR("Mike Christie");
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MODULE_DESCRIPTION("iSCSI library functions");
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MODULE_LICENSE("GPL");
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@ -233,7 +233,6 @@ static void iscsi_session_release(struct device *dev)
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shost = iscsi_session_to_shost(session);
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scsi_host_put(shost);
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kfree(session->targetname);
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kfree(session);
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module_put(transport->owner);
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}
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@ -388,7 +387,6 @@ static void iscsi_conn_release(struct device *dev)
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struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev);
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struct device *parent = conn->dev.parent;
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kfree(conn->persistent_address);
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kfree(conn);
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put_device(parent);
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}
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@ -877,23 +875,13 @@ iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev
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return 0;
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}
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static void
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iscsi_copy_param(struct iscsi_uevent *ev, uint32_t *value, char *data)
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{
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if (ev->u.set_param.len != sizeof(uint32_t))
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BUG();
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memcpy(value, data, min_t(uint32_t, sizeof(uint32_t),
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ev->u.set_param.len));
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}
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static int
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iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev)
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{
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char *data = (char*)ev + sizeof(*ev);
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struct iscsi_cls_conn *conn;
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struct iscsi_cls_session *session;
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int err = 0;
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uint32_t value = 0;
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int err = 0, value = 0;
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session = iscsi_session_lookup(ev->u.set_param.sid);
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conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid);
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@ -902,42 +890,13 @@ iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev)
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switch (ev->u.set_param.param) {
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case ISCSI_PARAM_SESS_RECOVERY_TMO:
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iscsi_copy_param(ev, &value, data);
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sscanf(data, "%d", &value);
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if (value != 0)
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session->recovery_tmo = value;
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break;
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case ISCSI_PARAM_TARGET_NAME:
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/* this should not change between logins */
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if (session->targetname)
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return 0;
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session->targetname = kstrdup(data, GFP_KERNEL);
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if (!session->targetname)
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return -ENOMEM;
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break;
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case ISCSI_PARAM_TPGT:
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iscsi_copy_param(ev, &value, data);
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session->tpgt = value;
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break;
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case ISCSI_PARAM_PERSISTENT_PORT:
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iscsi_copy_param(ev, &value, data);
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conn->persistent_port = value;
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break;
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case ISCSI_PARAM_PERSISTENT_ADDRESS:
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/*
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* this is the address returned in discovery so it should
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* not change between logins.
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*/
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if (conn->persistent_address)
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return 0;
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conn->persistent_address = kstrdup(data, GFP_KERNEL);
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if (!conn->persistent_address)
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return -ENOMEM;
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break;
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default:
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iscsi_copy_param(ev, &value, data);
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err = transport->set_param(conn, ev->u.set_param.param, value);
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err = transport->set_param(conn, ev->u.set_param.param,
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data, ev->u.set_param.len);
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}
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return err;
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@ -1165,49 +1124,31 @@ struct class_device_attribute class_device_attr_##_prefix##_##_name = \
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/*
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* iSCSI connection attrs
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*/
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#define iscsi_conn_int_attr_show(param, format) \
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#define iscsi_conn_attr_show(param) \
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static ssize_t \
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show_conn_int_param_##param(struct class_device *cdev, char *buf) \
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{ \
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uint32_t value = 0; \
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struct iscsi_cls_conn *conn = iscsi_cdev_to_conn(cdev); \
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struct iscsi_transport *t = conn->transport; \
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\
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t->get_conn_param(conn, param, &value); \
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return snprintf(buf, 20, format"\n", value); \
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}
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#define iscsi_conn_int_attr(field, param, format) \
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iscsi_conn_int_attr_show(param, format) \
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static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_int_param_##param, \
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NULL);
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iscsi_conn_int_attr(max_recv_dlength, ISCSI_PARAM_MAX_RECV_DLENGTH, "%u");
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iscsi_conn_int_attr(max_xmit_dlength, ISCSI_PARAM_MAX_XMIT_DLENGTH, "%u");
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iscsi_conn_int_attr(header_digest, ISCSI_PARAM_HDRDGST_EN, "%d");
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iscsi_conn_int_attr(data_digest, ISCSI_PARAM_DATADGST_EN, "%d");
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iscsi_conn_int_attr(ifmarker, ISCSI_PARAM_IFMARKER_EN, "%d");
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iscsi_conn_int_attr(ofmarker, ISCSI_PARAM_OFMARKER_EN, "%d");
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iscsi_conn_int_attr(persistent_port, ISCSI_PARAM_PERSISTENT_PORT, "%d");
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iscsi_conn_int_attr(port, ISCSI_PARAM_CONN_PORT, "%d");
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iscsi_conn_int_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN, "%u");
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#define iscsi_conn_str_attr_show(param) \
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static ssize_t \
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show_conn_str_param_##param(struct class_device *cdev, char *buf) \
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show_conn_param_##param(struct class_device *cdev, char *buf) \
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{ \
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struct iscsi_cls_conn *conn = iscsi_cdev_to_conn(cdev); \
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struct iscsi_transport *t = conn->transport; \
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return t->get_conn_str_param(conn, param, buf); \
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return t->get_conn_param(conn, param, buf); \
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}
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#define iscsi_conn_str_attr(field, param) \
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iscsi_conn_str_attr_show(param) \
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static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_str_param_##param, \
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#define iscsi_conn_attr(field, param) \
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iscsi_conn_attr_show(param) \
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static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_param_##param, \
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NULL);
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iscsi_conn_str_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS);
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iscsi_conn_str_attr(address, ISCSI_PARAM_CONN_ADDRESS);
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iscsi_conn_attr(max_recv_dlength, ISCSI_PARAM_MAX_RECV_DLENGTH);
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iscsi_conn_attr(max_xmit_dlength, ISCSI_PARAM_MAX_XMIT_DLENGTH);
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iscsi_conn_attr(header_digest, ISCSI_PARAM_HDRDGST_EN);
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iscsi_conn_attr(data_digest, ISCSI_PARAM_DATADGST_EN);
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iscsi_conn_attr(ifmarker, ISCSI_PARAM_IFMARKER_EN);
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iscsi_conn_attr(ofmarker, ISCSI_PARAM_OFMARKER_EN);
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iscsi_conn_attr(persistent_port, ISCSI_PARAM_PERSISTENT_PORT);
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iscsi_conn_attr(port, ISCSI_PARAM_CONN_PORT);
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iscsi_conn_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN);
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iscsi_conn_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS);
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iscsi_conn_attr(address, ISCSI_PARAM_CONN_ADDRESS);
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#define iscsi_cdev_to_session(_cdev) \
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iscsi_dev_to_session(_cdev->dev)
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@ -1215,61 +1156,36 @@ iscsi_conn_str_attr(address, ISCSI_PARAM_CONN_ADDRESS);
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/*
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* iSCSI session attrs
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*/
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#define iscsi_session_int_attr_show(param, format) \
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#define iscsi_session_attr_show(param) \
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static ssize_t \
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show_session_int_param_##param(struct class_device *cdev, char *buf) \
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{ \
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uint32_t value = 0; \
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struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev); \
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struct iscsi_transport *t = session->transport; \
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\
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t->get_session_param(session, param, &value); \
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return snprintf(buf, 20, format"\n", value); \
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}
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#define iscsi_session_int_attr(field, param, format) \
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iscsi_session_int_attr_show(param, format) \
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static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_int_param_##param, \
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NULL);
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iscsi_session_int_attr(initial_r2t, ISCSI_PARAM_INITIAL_R2T_EN, "%d");
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iscsi_session_int_attr(max_outstanding_r2t, ISCSI_PARAM_MAX_R2T, "%hu");
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iscsi_session_int_attr(immediate_data, ISCSI_PARAM_IMM_DATA_EN, "%d");
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iscsi_session_int_attr(first_burst_len, ISCSI_PARAM_FIRST_BURST, "%u");
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iscsi_session_int_attr(max_burst_len, ISCSI_PARAM_MAX_BURST, "%u");
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iscsi_session_int_attr(data_pdu_in_order, ISCSI_PARAM_PDU_INORDER_EN, "%d");
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iscsi_session_int_attr(data_seq_in_order, ISCSI_PARAM_DATASEQ_INORDER_EN, "%d");
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iscsi_session_int_attr(erl, ISCSI_PARAM_ERL, "%d");
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iscsi_session_int_attr(tpgt, ISCSI_PARAM_TPGT, "%d");
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#define iscsi_session_str_attr_show(param) \
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static ssize_t \
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show_session_str_param_##param(struct class_device *cdev, char *buf) \
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show_session_param_##param(struct class_device *cdev, char *buf) \
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{ \
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struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev); \
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struct iscsi_transport *t = session->transport; \
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return t->get_session_str_param(session, param, buf); \
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return t->get_session_param(session, param, buf); \
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}
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#define iscsi_session_str_attr(field, param) \
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iscsi_session_str_attr_show(param) \
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static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_str_param_##param, \
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#define iscsi_session_attr(field, param) \
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iscsi_session_attr_show(param) \
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static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_param_##param, \
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NULL);
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iscsi_session_str_attr(targetname, ISCSI_PARAM_TARGET_NAME);
|
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iscsi_session_attr(targetname, ISCSI_PARAM_TARGET_NAME);
|
||||
iscsi_session_attr(initial_r2t, ISCSI_PARAM_INITIAL_R2T_EN);
|
||||
iscsi_session_attr(max_outstanding_r2t, ISCSI_PARAM_MAX_R2T);
|
||||
iscsi_session_attr(immediate_data, ISCSI_PARAM_IMM_DATA_EN);
|
||||
iscsi_session_attr(first_burst_len, ISCSI_PARAM_FIRST_BURST);
|
||||
iscsi_session_attr(max_burst_len, ISCSI_PARAM_MAX_BURST);
|
||||
iscsi_session_attr(data_pdu_in_order, ISCSI_PARAM_PDU_INORDER_EN);
|
||||
iscsi_session_attr(data_seq_in_order, ISCSI_PARAM_DATASEQ_INORDER_EN);
|
||||
iscsi_session_attr(erl, ISCSI_PARAM_ERL);
|
||||
iscsi_session_attr(tpgt, ISCSI_PARAM_TPGT);
|
||||
|
||||
/*
|
||||
* Private session and conn attrs. userspace uses several iscsi values
|
||||
* to identify each session between reboots. Some of these values may not
|
||||
* be present in the iscsi_transport/LLD driver becuase userspace handles
|
||||
* login (and failback for login redirect) so for these type of drivers
|
||||
* the class manages the attrs and values for the iscsi_transport/LLD
|
||||
*/
|
||||
#define iscsi_priv_session_attr_show(field, format) \
|
||||
static ssize_t \
|
||||
show_priv_session_##field(struct class_device *cdev, char *buf) \
|
||||
{ \
|
||||
struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev); \
|
||||
struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev);\
|
||||
return sprintf(buf, format"\n", session->field); \
|
||||
}
|
||||
|
||||
@ -1277,31 +1193,15 @@ show_priv_session_##field(struct class_device *cdev, char *buf) \
|
||||
iscsi_priv_session_attr_show(field, format) \
|
||||
static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO, show_priv_session_##field, \
|
||||
NULL)
|
||||
iscsi_priv_session_attr(targetname, "%s");
|
||||
iscsi_priv_session_attr(tpgt, "%d");
|
||||
iscsi_priv_session_attr(recovery_tmo, "%d");
|
||||
|
||||
#define iscsi_priv_conn_attr_show(field, format) \
|
||||
static ssize_t \
|
||||
show_priv_conn_##field(struct class_device *cdev, char *buf) \
|
||||
{ \
|
||||
struct iscsi_cls_conn *conn = iscsi_cdev_to_conn(cdev); \
|
||||
return sprintf(buf, format"\n", conn->field); \
|
||||
}
|
||||
|
||||
#define iscsi_priv_conn_attr(field, format) \
|
||||
iscsi_priv_conn_attr_show(field, format) \
|
||||
static ISCSI_CLASS_ATTR(priv_conn, field, S_IRUGO, show_priv_conn_##field, \
|
||||
NULL)
|
||||
iscsi_priv_conn_attr(persistent_address, "%s");
|
||||
iscsi_priv_conn_attr(persistent_port, "%d");
|
||||
|
||||
#define SETUP_PRIV_SESSION_RD_ATTR(field) \
|
||||
do { \
|
||||
priv->session_attrs[count] = &class_device_attr_priv_sess_##field; \
|
||||
count++; \
|
||||
} while (0)
|
||||
|
||||
|
||||
#define SETUP_SESSION_RD_ATTR(field, param_flag) \
|
||||
do { \
|
||||
if (tt->param_mask & param_flag) { \
|
||||
@ -1310,12 +1210,6 @@ do { \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
#define SETUP_PRIV_CONN_RD_ATTR(field) \
|
||||
do { \
|
||||
priv->conn_attrs[count] = &class_device_attr_priv_conn_##field; \
|
||||
count++; \
|
||||
} while (0)
|
||||
|
||||
#define SETUP_CONN_RD_ATTR(field, param_flag) \
|
||||
do { \
|
||||
if (tt->param_mask & param_flag) { \
|
||||
@ -1442,16 +1336,8 @@ iscsi_register_transport(struct iscsi_transport *tt)
|
||||
SETUP_CONN_RD_ATTR(address, ISCSI_CONN_ADDRESS);
|
||||
SETUP_CONN_RD_ATTR(port, ISCSI_CONN_PORT);
|
||||
SETUP_CONN_RD_ATTR(exp_statsn, ISCSI_EXP_STATSN);
|
||||
|
||||
if (tt->param_mask & ISCSI_PERSISTENT_ADDRESS)
|
||||
SETUP_CONN_RD_ATTR(persistent_address, ISCSI_PERSISTENT_ADDRESS);
|
||||
else
|
||||
SETUP_PRIV_CONN_RD_ATTR(persistent_address);
|
||||
|
||||
if (tt->param_mask & ISCSI_PERSISTENT_PORT)
|
||||
SETUP_CONN_RD_ATTR(persistent_port, ISCSI_PERSISTENT_PORT);
|
||||
else
|
||||
SETUP_PRIV_CONN_RD_ATTR(persistent_port);
|
||||
|
||||
BUG_ON(count > ISCSI_CONN_ATTRS);
|
||||
priv->conn_attrs[count] = NULL;
|
||||
@ -1471,17 +1357,9 @@ iscsi_register_transport(struct iscsi_transport *tt)
|
||||
SETUP_SESSION_RD_ATTR(data_pdu_in_order, ISCSI_PDU_INORDER_EN);
|
||||
SETUP_SESSION_RD_ATTR(data_seq_in_order, ISCSI_DATASEQ_INORDER_EN);
|
||||
SETUP_SESSION_RD_ATTR(erl, ISCSI_ERL);
|
||||
SETUP_PRIV_SESSION_RD_ATTR(recovery_tmo);
|
||||
|
||||
if (tt->param_mask & ISCSI_TARGET_NAME)
|
||||
SETUP_SESSION_RD_ATTR(targetname, ISCSI_TARGET_NAME);
|
||||
else
|
||||
SETUP_PRIV_SESSION_RD_ATTR(targetname);
|
||||
|
||||
if (tt->param_mask & ISCSI_TPGT)
|
||||
SETUP_SESSION_RD_ATTR(tpgt, ISCSI_TPGT);
|
||||
else
|
||||
SETUP_PRIV_SESSION_RD_ATTR(tpgt);
|
||||
SETUP_PRIV_SESSION_RD_ATTR(recovery_tmo);
|
||||
|
||||
BUG_ON(count > ISCSI_SESSION_ATTRS);
|
||||
priv->session_attrs[count] = NULL;
|
||||
|
||||
@ -157,6 +157,11 @@ struct iscsi_conn {
|
||||
int max_xmit_dlength; /* target_max_recv_dsl */
|
||||
int hdrdgst_en;
|
||||
int datadgst_en;
|
||||
int ifmarker_en;
|
||||
int ofmarker_en;
|
||||
/* values userspace uses to id a conn */
|
||||
int persistent_port;
|
||||
char *persistent_address;
|
||||
|
||||
/* MIB-statistics */
|
||||
uint64_t txdata_octets;
|
||||
@ -196,8 +201,8 @@ struct iscsi_session {
|
||||
int pdu_inorder_en;
|
||||
int dataseq_inorder_en;
|
||||
int erl;
|
||||
int ifmarker_en;
|
||||
int ofmarker_en;
|
||||
int tpgt;
|
||||
char *targetname;
|
||||
|
||||
/* control data */
|
||||
struct iscsi_transport *tt;
|
||||
@ -240,6 +245,10 @@ iscsi_session_setup(struct iscsi_transport *, struct scsi_transport_template *,
|
||||
extern void iscsi_session_teardown(struct iscsi_cls_session *);
|
||||
extern struct iscsi_session *class_to_transport_session(struct iscsi_cls_session *);
|
||||
extern void iscsi_session_recovery_timedout(struct iscsi_cls_session *);
|
||||
extern int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
|
||||
enum iscsi_param param, char *buf, int buflen);
|
||||
extern int iscsi_session_get_param(struct iscsi_cls_session *cls_session,
|
||||
enum iscsi_param param, char *buf);
|
||||
|
||||
#define session_to_cls(_sess) \
|
||||
hostdata_session(_sess->host->hostdata)
|
||||
@ -255,6 +264,8 @@ extern void iscsi_conn_stop(struct iscsi_cls_conn *, int);
|
||||
extern int iscsi_conn_bind(struct iscsi_cls_session *, struct iscsi_cls_conn *,
|
||||
int);
|
||||
extern void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err);
|
||||
extern int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
|
||||
enum iscsi_param param, char *buf);
|
||||
|
||||
/*
|
||||
* pdu and task processing
|
||||
|
||||
@ -34,6 +34,7 @@ struct iscsi_cls_conn;
|
||||
struct iscsi_conn;
|
||||
struct iscsi_cmd_task;
|
||||
struct iscsi_mgmt_task;
|
||||
struct sockaddr;
|
||||
|
||||
/**
|
||||
* struct iscsi_transport - iSCSI Transport template
|
||||
@ -46,7 +47,12 @@ struct iscsi_mgmt_task;
|
||||
* @bind_conn: associate this connection with existing iSCSI session
|
||||
* and specified transport descriptor
|
||||
* @destroy_conn: destroy inactive iSCSI connection
|
||||
* @set_param: set iSCSI Data-Path operational parameter
|
||||
* @set_param: set iSCSI parameter. Return 0 on success, -ENODATA
|
||||
* when param is not supported, and a -Exx value on other
|
||||
* error.
|
||||
* @get_param get iSCSI parameter. Must return number of bytes
|
||||
* copied to buffer on success, -ENODATA when param
|
||||
* is not supported, and a -Exx value on other error
|
||||
* @start_conn: set connection to be operational
|
||||
* @stop_conn: suspend/recover/terminate connection
|
||||
* @send_pdu: send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
|
||||
@ -97,14 +103,10 @@ struct iscsi_transport {
|
||||
void (*stop_conn) (struct iscsi_cls_conn *conn, int flag);
|
||||
void (*destroy_conn) (struct iscsi_cls_conn *conn);
|
||||
int (*set_param) (struct iscsi_cls_conn *conn, enum iscsi_param param,
|
||||
uint32_t value);
|
||||
char *buf, int buflen);
|
||||
int (*get_conn_param) (struct iscsi_cls_conn *conn,
|
||||
enum iscsi_param param, uint32_t *value);
|
||||
int (*get_session_param) (struct iscsi_cls_session *session,
|
||||
enum iscsi_param param, uint32_t *value);
|
||||
int (*get_conn_str_param) (struct iscsi_cls_conn *conn,
|
||||
enum iscsi_param param, char *buf);
|
||||
int (*get_session_str_param) (struct iscsi_cls_session *session,
|
||||
int (*get_session_param) (struct iscsi_cls_session *session,
|
||||
enum iscsi_param param, char *buf);
|
||||
int (*send_pdu) (struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
|
||||
char *data, uint32_t data_size);
|
||||
@ -157,13 +159,6 @@ struct iscsi_cls_conn {
|
||||
struct iscsi_transport *transport;
|
||||
uint32_t cid; /* connection id */
|
||||
|
||||
/* portal/group values we got during discovery */
|
||||
char *persistent_address;
|
||||
int persistent_port;
|
||||
/* portal/group values we are currently using */
|
||||
char *address;
|
||||
int port;
|
||||
|
||||
int active; /* must be accessed with the connlock */
|
||||
struct device dev; /* sysfs transport/container device */
|
||||
struct mempool_zone *z_error;
|
||||
@ -187,10 +182,6 @@ struct iscsi_cls_session {
|
||||
struct list_head host_list;
|
||||
struct iscsi_transport *transport;
|
||||
|
||||
/* iSCSI values used as unique id by userspace. */
|
||||
char *targetname;
|
||||
int tpgt;
|
||||
|
||||
/* recovery fields */
|
||||
int recovery_tmo;
|
||||
struct work_struct recovery_work;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user