mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 19:50:53 +07:00
Merge HEAD from ../scsi-misc-2.6-old
This commit is contained in:
James Bottomley
commit
38a9a621ab
@ -229,7 +229,7 @@ config SCSI_FC_ATTRS
|
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config SCSI_ISCSI_ATTRS
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tristate "iSCSI Transport Attributes"
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depends on SCSI
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depends on SCSI && NET
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help
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If you wish to export transport-specific information about
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each attached iSCSI device to sysfs, say Y.
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@ -247,6 +247,30 @@ endmenu
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menu "SCSI low-level drivers"
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depends on SCSI!=n
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config ISCSI_TCP
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tristate "iSCSI Initiator over TCP/IP"
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depends on SCSI && INET
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select CRYPTO
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select CRYPTO_MD5
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select CRYPTO_CRC32C
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select SCSI_ISCSI_ATTRS
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help
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The iSCSI Driver provides a host with the ability to access storage
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through an IP network. The driver uses the iSCSI protocol to transport
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SCSI requests and responses over a TCP/IP network between the host
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(the "initiator") and "targets". Architecturally, the iSCSI driver
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combines with the host's TCP/IP stack, network drivers, and Network
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Interface Card (NIC) to provide the same functions as a SCSI or a
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Fibre Channel (FC) adapter driver with a Host Bus Adapter (HBA).
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To compile this driver as a module, choose M here: the
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module will be called iscsi_tcp.
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The userspace component needed to initialize the driver, documentation,
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and sample configuration files can be found here:
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http://linux-iscsi.sf.net
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config SGIWD93_SCSI
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tristate "SGI WD93C93 SCSI Driver"
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depends on SGI_IP22 && SCSI
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@ -33,6 +33,7 @@ obj-$(CONFIG_SCSI_FC_ATTRS) += scsi_transport_fc.o
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obj-$(CONFIG_SCSI_ISCSI_ATTRS) += scsi_transport_iscsi.o
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obj-$(CONFIG_SCSI_SAS_ATTRS) += scsi_transport_sas.o
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obj-$(CONFIG_ISCSI_TCP) += iscsi_tcp.o
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obj-$(CONFIG_SCSI_AMIGA7XX) += amiga7xx.o 53c7xx.o
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obj-$(CONFIG_A3000_SCSI) += a3000.o wd33c93.o
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obj-$(CONFIG_A2091_SCSI) += a2091.o wd33c93.o
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@ -608,17 +608,43 @@ static char *container_types[] = {
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* files instead of in OS dependant driver source.
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*/
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static void setinqstr(int devtype, void *data, int tindex)
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static void setinqstr(struct aac_dev *dev, void *data, int tindex)
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{
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struct scsi_inq *str;
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struct aac_driver_ident *mp;
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mp = aac_get_driver_ident(devtype);
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str = (struct scsi_inq *)(data); /* cast data to scsi inq block */
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memset(str, ' ', sizeof(*str));
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inqstrcpy (mp->vname, str->vid);
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inqstrcpy (mp->model, str->pid); /* last six chars reserved for vol type */
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if (dev->supplement_adapter_info.AdapterTypeText[0]) {
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char * cp = dev->supplement_adapter_info.AdapterTypeText;
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int c = sizeof(str->vid);
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while (*cp && *cp != ' ' && --c)
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++cp;
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c = *cp;
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*cp = '\0';
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inqstrcpy (dev->supplement_adapter_info.AdapterTypeText,
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str->vid);
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*cp = c;
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while (*cp && *cp != ' ')
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++cp;
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while (*cp == ' ')
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++cp;
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/* last six chars reserved for vol type */
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c = 0;
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if (strlen(cp) > sizeof(str->pid)) {
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c = cp[sizeof(str->pid)];
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cp[sizeof(str->pid)] = '\0';
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}
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inqstrcpy (cp, str->pid);
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if (c)
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cp[sizeof(str->pid)] = c;
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} else {
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struct aac_driver_ident *mp = aac_get_driver_ident(dev->cardtype);
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inqstrcpy (mp->vname, str->vid);
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/* last six chars reserved for vol type */
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inqstrcpy (mp->model, str->pid);
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}
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if (tindex < (sizeof(container_types)/sizeof(char *))){
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char *findit = str->pid;
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@ -627,7 +653,9 @@ static void setinqstr(int devtype, void *data, int tindex)
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/* RAID is superfluous in the context of a RAID device */
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if (memcmp(findit-4, "RAID", 4) == 0)
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*(findit -= 4) = ' ';
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inqstrcpy (container_types[tindex], findit + 1);
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if (((findit - str->pid) + strlen(container_types[tindex]))
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< (sizeof(str->pid) + sizeof(str->prl)))
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inqstrcpy (container_types[tindex], findit + 1);
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}
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inqstrcpy ("V1.0", str->prl);
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}
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@ -822,12 +850,12 @@ int aac_get_adapter_info(struct aac_dev* dev)
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dev->dac_support = (dacmode!=0);
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}
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if(dev->dac_support != 0) {
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if (!pci_set_dma_mask(dev->pdev, 0xFFFFFFFFFFFFFFFFULL) &&
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!pci_set_consistent_dma_mask(dev->pdev, 0xFFFFFFFFFFFFFFFFULL)) {
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if (!pci_set_dma_mask(dev->pdev, DMA_64BIT_MASK) &&
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!pci_set_consistent_dma_mask(dev->pdev, DMA_64BIT_MASK)) {
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printk(KERN_INFO"%s%d: 64 Bit DAC enabled\n",
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dev->name, dev->id);
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} else if (!pci_set_dma_mask(dev->pdev, 0xFFFFFFFFULL) &&
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!pci_set_consistent_dma_mask(dev->pdev, 0xFFFFFFFFULL)) {
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} else if (!pci_set_dma_mask(dev->pdev, DMA_32BIT_MASK) &&
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!pci_set_consistent_dma_mask(dev->pdev, DMA_32BIT_MASK)) {
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printk(KERN_INFO"%s%d: DMA mask set failed, 64 Bit DAC disabled\n",
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dev->name, dev->id);
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dev->dac_support = 0;
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@ -1438,7 +1466,6 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
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struct Scsi_Host *host = scsicmd->device->host;
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struct aac_dev *dev = (struct aac_dev *)host->hostdata;
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struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev;
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int cardtype = dev->cardtype;
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int ret;
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/*
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@ -1542,14 +1569,14 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
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* see: <vendor>.c i.e. aac.c
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*/
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if (scsicmd->device->id == host->this_id) {
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setinqstr(cardtype, (void *) (inq_data.inqd_vid), (sizeof(container_types)/sizeof(char *)));
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setinqstr(dev, (void *) (inq_data.inqd_vid), (sizeof(container_types)/sizeof(char *)));
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inq_data.inqd_pdt = INQD_PDT_PROC; /* Processor device */
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aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
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scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
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scsicmd->scsi_done(scsicmd);
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return 0;
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}
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setinqstr(cardtype, (void *) (inq_data.inqd_vid), fsa_dev_ptr[cid].type);
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setinqstr(dev, (void *) (inq_data.inqd_vid), fsa_dev_ptr[cid].type);
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inq_data.inqd_pdt = INQD_PDT_DA; /* Direct/random access device */
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aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
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return aac_get_container_name(scsicmd, cid);
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@ -1560,7 +1560,7 @@ struct fib_ioctl
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struct revision
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{
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__le32 compat;
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u32 compat;
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__le32 version;
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__le32 build;
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};
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@ -408,7 +408,7 @@ static int check_revision(struct aac_dev *dev, void __user *arg)
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char *driver_version = aac_driver_version;
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u32 version;
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response.compat = cpu_to_le32(1);
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response.compat = 1;
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version = (simple_strtol(driver_version,
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&driver_version, 10) << 24) | 0x00000400;
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version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
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@ -574,7 +574,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
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rcode = -ENOMEM;
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goto cleanup;
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}
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sg_user[i] = (void __user *)usg->sg[i].addr;
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sg_user[i] = (void __user *)(long)usg->sg[i].addr;
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sg_list[i] = p; // save so we can clean up later
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sg_indx = i;
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@ -624,7 +624,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
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rcode = -ENOMEM;
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goto cleanup;
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}
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sg_user[i] = (void __user *)upsg->sg[i].addr;
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sg_user[i] = (void __user *)(long)upsg->sg[i].addr;
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sg_list[i] = p; // save so we can clean up later
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sg_indx = i;
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@ -752,8 +752,8 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
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if (error)
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goto out;
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if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL) ||
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pci_set_consistent_dma_mask(pdev, 0xFFFFFFFFULL))
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if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) ||
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pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
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goto out;
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/*
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* If the quirk31 bit is set, the adapter needs adapter
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@ -797,9 +797,9 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
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* address space.
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*/
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if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
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if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL))
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goto out_free_fibs;
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if (pci_set_dma_mask(pdev, DMA_32BIT_MASK))
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goto out_deinit;
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aac->maximum_num_channels = aac_drivers[index].channels;
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error = aac_get_adapter_info(aac);
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if (error < 0)
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@ -976,6 +976,16 @@ static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
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}
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}
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static inline void pio_trigger(void)
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{
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static int feedback_requested;
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if (!feedback_requested) {
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feedback_requested = 1;
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printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
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"to help improve support for your system.\n", __FILE__);
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}
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}
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/* Prepare SRB for being sent to Device DCB w/ command *cmd */
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static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
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@ -2320,6 +2330,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
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CFG2_WIDEFIFO);
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while (DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) != 0x40) {
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u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
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pio_trigger();
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*(srb->virt_addr)++ = byte;
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if (debug_enabled(DBG_PIO))
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printk(" %02x", byte);
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@ -2331,6 +2342,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
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/* Read the last byte ... */
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if (srb->total_xfer_length > 0) {
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u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
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pio_trigger();
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*(srb->virt_addr)++ = byte;
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srb->total_xfer_length--;
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if (debug_enabled(DBG_PIO))
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||||
@ -2507,6 +2519,7 @@ static void data_io_transfer(struct AdapterCtlBlk *acb,
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if (debug_enabled(DBG_PIO))
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printk(" %02x", (unsigned char) *(srb->virt_addr));
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|
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pio_trigger();
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DC395x_write8(acb, TRM_S1040_SCSI_FIFO,
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*(srb->virt_addr)++);
|
||||
|
||||
|
||||
3642
drivers/scsi/iscsi_tcp.c
Normal file
3642
drivers/scsi/iscsi_tcp.c
Normal file
File diff suppressed because it is too large
Load Diff
322
drivers/scsi/iscsi_tcp.h
Normal file
322
drivers/scsi/iscsi_tcp.h
Normal file
@ -0,0 +1,322 @@
|
||||
/*
|
||||
* iSCSI Initiator TCP Transport
|
||||
* Copyright (C) 2004 Dmitry Yusupov
|
||||
* Copyright (C) 2004 Alex Aizman
|
||||
* Copyright (C) 2005 Mike Christie
|
||||
* maintained by open-iscsi@googlegroups.com
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published
|
||||
* by the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* General Public License for more details.
|
||||
*
|
||||
* See the file COPYING included with this distribution for more details.
|
||||
*/
|
||||
|
||||
#ifndef ISCSI_TCP_H
|
||||
#define ISCSI_TCP_H
|
||||
|
||||
/* Session's states */
|
||||
#define ISCSI_STATE_FREE 1
|
||||
#define ISCSI_STATE_LOGGED_IN 2
|
||||
#define ISCSI_STATE_FAILED 3
|
||||
#define ISCSI_STATE_TERMINATE 4
|
||||
|
||||
/* Connection's states */
|
||||
#define ISCSI_CONN_INITIAL_STAGE 0
|
||||
#define ISCSI_CONN_STARTED 1
|
||||
#define ISCSI_CONN_STOPPED 2
|
||||
#define ISCSI_CONN_CLEANUP_WAIT 3
|
||||
|
||||
/* Connection suspend "bit" */
|
||||
#define SUSPEND_BIT 1
|
||||
|
||||
/* Socket's Receive state machine */
|
||||
#define IN_PROGRESS_WAIT_HEADER 0x0
|
||||
#define IN_PROGRESS_HEADER_GATHER 0x1
|
||||
#define IN_PROGRESS_DATA_RECV 0x2
|
||||
#define IN_PROGRESS_DDIGEST_RECV 0x3
|
||||
|
||||
/* Task Mgmt states */
|
||||
#define TMABORT_INITIAL 0x0
|
||||
#define TMABORT_SUCCESS 0x1
|
||||
#define TMABORT_FAILED 0x2
|
||||
#define TMABORT_TIMEDOUT 0x3
|
||||
|
||||
/* xmit state machine */
|
||||
#define XMSTATE_IDLE 0x0
|
||||
#define XMSTATE_R_HDR 0x1
|
||||
#define XMSTATE_W_HDR 0x2
|
||||
#define XMSTATE_IMM_HDR 0x4
|
||||
#define XMSTATE_IMM_DATA 0x8
|
||||
#define XMSTATE_UNS_INIT 0x10
|
||||
#define XMSTATE_UNS_HDR 0x20
|
||||
#define XMSTATE_UNS_DATA 0x40
|
||||
#define XMSTATE_SOL_HDR 0x80
|
||||
#define XMSTATE_SOL_DATA 0x100
|
||||
#define XMSTATE_W_PAD 0x200
|
||||
#define XMSTATE_DATA_DIGEST 0x400
|
||||
|
||||
#define ISCSI_CONN_MAX 1
|
||||
#define ISCSI_CONN_RCVBUF_MIN 262144
|
||||
#define ISCSI_CONN_SNDBUF_MIN 262144
|
||||
#define ISCSI_PAD_LEN 4
|
||||
#define ISCSI_R2T_MAX 16
|
||||
#define ISCSI_XMIT_CMDS_MAX 128 /* must be power of 2 */
|
||||
#define ISCSI_MGMT_CMDS_MAX 32 /* must be power of 2 */
|
||||
#define ISCSI_MGMT_ITT_OFFSET 0xa00
|
||||
#define ISCSI_SG_TABLESIZE SG_ALL
|
||||
#define ISCSI_CMD_PER_LUN 128
|
||||
#define ISCSI_TCP_MAX_CMD_LEN 16
|
||||
|
||||
#define ITT_MASK (0xfff)
|
||||
#define CID_SHIFT 12
|
||||
#define CID_MASK (0xffff<<CID_SHIFT)
|
||||
#define AGE_SHIFT 28
|
||||
#define AGE_MASK (0xf<<AGE_SHIFT)
|
||||
|
||||
struct iscsi_queue {
|
||||
struct kfifo *queue; /* FIFO Queue */
|
||||
void **pool; /* Pool of elements */
|
||||
int max; /* Max number of elements */
|
||||
};
|
||||
|
||||
struct iscsi_session;
|
||||
struct iscsi_cmd_task;
|
||||
struct iscsi_mgmt_task;
|
||||
|
||||
/* Socket connection recieve helper */
|
||||
struct iscsi_tcp_recv {
|
||||
struct iscsi_hdr *hdr;
|
||||
struct sk_buff *skb;
|
||||
int offset;
|
||||
int len;
|
||||
int hdr_offset;
|
||||
int copy;
|
||||
int copied;
|
||||
int padding;
|
||||
struct iscsi_cmd_task *ctask; /* current cmd in progress */
|
||||
|
||||
/* copied and flipped values */
|
||||
int opcode;
|
||||
int flags;
|
||||
int cmd_status;
|
||||
int ahslen;
|
||||
int datalen;
|
||||
uint32_t itt;
|
||||
int datadgst;
|
||||
};
|
||||
|
||||
struct iscsi_conn {
|
||||
struct iscsi_hdr hdr; /* header placeholder */
|
||||
char hdrext[4*sizeof(__u16) +
|
||||
sizeof(__u32)];
|
||||
int data_copied;
|
||||
char *data; /* data placeholder */
|
||||
struct socket *sock; /* TCP socket */
|
||||
int data_size; /* actual recv_dlength */
|
||||
int stop_stage; /* conn_stop() flag: *
|
||||
* stop to recover, *
|
||||
* stop to terminate */
|
||||
/* iSCSI connection-wide sequencing */
|
||||
uint32_t exp_statsn;
|
||||
int hdr_size; /* PDU header size */
|
||||
unsigned long suspend_rx; /* suspend Rx */
|
||||
|
||||
struct crypto_tfm *rx_tfm; /* CRC32C (Rx) */
|
||||
struct crypto_tfm *data_rx_tfm; /* CRC32C (Rx) for data */
|
||||
|
||||
/* control data */
|
||||
int senselen; /* scsi sense length */
|
||||
int id; /* CID */
|
||||
struct iscsi_tcp_recv in; /* TCP receive context */
|
||||
struct iscsi_session *session; /* parent session */
|
||||
struct list_head item; /* maintains list of conns */
|
||||
int in_progress; /* connection state machine */
|
||||
int c_stage; /* connection state */
|
||||
struct iscsi_mgmt_task *login_mtask; /* mtask used for login/text */
|
||||
struct iscsi_mgmt_task *mtask; /* xmit mtask in progress */
|
||||
struct iscsi_cmd_task *ctask; /* xmit ctask in progress */
|
||||
spinlock_t lock; /* FIXME: to be removed */
|
||||
|
||||
/* old values for socket callbacks */
|
||||
void (*old_data_ready)(struct sock *, int);
|
||||
void (*old_state_change)(struct sock *);
|
||||
void (*old_write_space)(struct sock *);
|
||||
|
||||
/* xmit */
|
||||
struct crypto_tfm *tx_tfm; /* CRC32C (Tx) */
|
||||
struct crypto_tfm *data_tx_tfm; /* CRC32C (Tx) for data */
|
||||
struct kfifo *writequeue; /* write cmds for Data-Outs */
|
||||
struct kfifo *immqueue; /* immediate xmit queue */
|
||||
struct kfifo *mgmtqueue; /* mgmt (control) xmit queue */
|
||||
struct kfifo *xmitqueue; /* data-path cmd queue */
|
||||
struct work_struct xmitwork; /* per-conn. xmit workqueue */
|
||||
struct semaphore xmitsema; /* serializes connection xmit,
|
||||
* access to kfifos: *
|
||||
* xmitqueue, writequeue, *
|
||||
* immqueue, mgmtqueue */
|
||||
unsigned long suspend_tx; /* suspend Tx */
|
||||
|
||||
/* abort */
|
||||
wait_queue_head_t ehwait; /* used in eh_abort() */
|
||||
struct iscsi_tm tmhdr;
|
||||
struct timer_list tmabort_timer; /* abort timer */
|
||||
int tmabort_state; /* see TMABORT_INITIAL, etc.*/
|
||||
|
||||
/* negotiated params */
|
||||
int max_recv_dlength;
|
||||
int max_xmit_dlength;
|
||||
int hdrdgst_en;
|
||||
int datadgst_en;
|
||||
|
||||
/* MIB-statistics */
|
||||
uint64_t txdata_octets;
|
||||
uint64_t rxdata_octets;
|
||||
uint32_t scsicmd_pdus_cnt;
|
||||
uint32_t dataout_pdus_cnt;
|
||||
uint32_t scsirsp_pdus_cnt;
|
||||
uint32_t datain_pdus_cnt;
|
||||
uint32_t r2t_pdus_cnt;
|
||||
uint32_t tmfcmd_pdus_cnt;
|
||||
int32_t tmfrsp_pdus_cnt;
|
||||
|
||||
/* custom statistics */
|
||||
uint32_t sendpage_failures_cnt;
|
||||
uint32_t discontiguous_hdr_cnt;
|
||||
uint32_t eh_abort_cnt;
|
||||
};
|
||||
|
||||
struct iscsi_session {
|
||||
/* iSCSI session-wide sequencing */
|
||||
uint32_t cmdsn;
|
||||
uint32_t exp_cmdsn;
|
||||
uint32_t max_cmdsn;
|
||||
|
||||
/* configuration */
|
||||
int initial_r2t_en;
|
||||
int max_r2t;
|
||||
int imm_data_en;
|
||||
int first_burst;
|
||||
int max_burst;
|
||||
int time2wait;
|
||||
int time2retain;
|
||||
int pdu_inorder_en;
|
||||
int dataseq_inorder_en;
|
||||
int erl;
|
||||
int ifmarker_en;
|
||||
int ofmarker_en;
|
||||
|
||||
/* control data */
|
||||
struct Scsi_Host *host;
|
||||
int id;
|
||||
struct iscsi_conn *leadconn; /* leading connection */
|
||||
spinlock_t lock; /* protects session state, *
|
||||
* sequence numbers, *
|
||||
* session resources: *
|
||||
* - cmdpool, *
|
||||
* - mgmtpool, *
|
||||
* - r2tpool */
|
||||
int state; /* session state */
|
||||
struct list_head item;
|
||||
void *auth_client;
|
||||
int conn_cnt;
|
||||
int age; /* counts session re-opens */
|
||||
|
||||
struct list_head connections; /* list of connections */
|
||||
int cmds_max; /* size of cmds array */
|
||||
struct iscsi_cmd_task **cmds; /* Original Cmds arr */
|
||||
struct iscsi_queue cmdpool; /* PDU's pool */
|
||||
int mgmtpool_max; /* size of mgmt array */
|
||||
struct iscsi_mgmt_task **mgmt_cmds; /* Original mgmt arr */
|
||||
struct iscsi_queue mgmtpool; /* Mgmt PDU's pool */
|
||||
};
|
||||
|
||||
struct iscsi_buf {
|
||||
struct scatterlist sg;
|
||||
struct kvec iov;
|
||||
unsigned int sent;
|
||||
};
|
||||
|
||||
struct iscsi_data_task {
|
||||
struct iscsi_data hdr; /* PDU */
|
||||
char hdrext[sizeof(__u32)]; /* Header-Digest */
|
||||
struct list_head item; /* data queue item */
|
||||
struct iscsi_buf digestbuf; /* digest buffer */
|
||||
uint32_t digest; /* data digest */
|
||||
};
|
||||
#define ISCSI_DTASK_DEFAULT_MAX ISCSI_SG_TABLESIZE * PAGE_SIZE / 512
|
||||
|
||||
struct iscsi_mgmt_task {
|
||||
struct iscsi_hdr hdr; /* mgmt. PDU */
|
||||
char hdrext[sizeof(__u32)]; /* Header-Digest */
|
||||
char *data; /* mgmt payload */
|
||||
int xmstate; /* mgmt xmit progress */
|
||||
int data_count; /* counts data to be sent */
|
||||
struct iscsi_buf headbuf; /* header buffer */
|
||||
struct iscsi_buf sendbuf; /* in progress buffer */
|
||||
int sent;
|
||||
uint32_t itt; /* this ITT */
|
||||
};
|
||||
|
||||
struct iscsi_r2t_info {
|
||||
__be32 ttt; /* copied from R2T */
|
||||
__be32 exp_statsn; /* copied from R2T */
|
||||
uint32_t data_length; /* copied from R2T */
|
||||
uint32_t data_offset; /* copied from R2T */
|
||||
struct iscsi_buf headbuf; /* Data-Out Header Buffer */
|
||||
struct iscsi_buf sendbuf; /* Data-Out in progress buffer*/
|
||||
int sent; /* R2T sequence progress */
|
||||
int data_count; /* DATA-Out payload progress */
|
||||
struct scatterlist *sg; /* per-R2T SG list */
|
||||
int solicit_datasn;
|
||||
struct iscsi_data_task *dtask; /* which data task */
|
||||
};
|
||||
|
||||
struct iscsi_cmd_task {
|
||||
struct iscsi_cmd hdr; /* iSCSI PDU header */
|
||||
char hdrext[4*sizeof(__u16)+ /* AHS */
|
||||
sizeof(__u32)]; /* HeaderDigest */
|
||||
char pad[ISCSI_PAD_LEN];
|
||||
int itt; /* this ITT */
|
||||
int datasn; /* DataSN */
|
||||
struct iscsi_buf headbuf; /* header buf (xmit) */
|
||||
struct iscsi_buf sendbuf; /* in progress buffer*/
|
||||
int sent;
|
||||
struct scatterlist *sg; /* per-cmd SG list */
|
||||
struct scatterlist *bad_sg; /* assert statement */
|
||||
int sg_count; /* SG's to process */
|
||||
uint32_t unsol_datasn;
|
||||
uint32_t exp_r2tsn;
|
||||
int xmstate; /* xmit xtate machine */
|
||||
int imm_count; /* imm-data (bytes) */
|
||||
int unsol_count; /* unsolicited (bytes)*/
|
||||
int r2t_data_count; /* R2T Data-Out bytes */
|
||||
int data_count; /* remaining Data-Out */
|
||||
int pad_count; /* padded bytes */
|
||||
struct scsi_cmnd *sc; /* associated SCSI cmd*/
|
||||
int total_length;
|
||||
int data_offset;
|
||||
struct iscsi_conn *conn; /* used connection */
|
||||
struct iscsi_mgmt_task *mtask; /* tmf mtask in progr */
|
||||
|
||||
struct iscsi_r2t_info *r2t; /* in progress R2T */
|
||||
struct iscsi_queue r2tpool;
|
||||
struct kfifo *r2tqueue;
|
||||
struct iscsi_r2t_info **r2ts;
|
||||
struct list_head dataqueue; /* Data-Out dataqueue */
|
||||
mempool_t *datapool;
|
||||
uint32_t datadigest; /* for recover digest */
|
||||
int digest_count;
|
||||
uint32_t immdigest; /* for imm data */
|
||||
struct iscsi_buf immbuf; /* for imm data digest */
|
||||
struct iscsi_data_task *dtask; /* data task in progress*/
|
||||
int digest_offset; /* for partial buff digest */
|
||||
};
|
||||
|
||||
#endif /* ISCSI_H */
|
||||
@ -3481,8 +3481,8 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
|
||||
**----------------------------------------------------
|
||||
*/
|
||||
if (np->settle_time && cmd->timeout_per_command >= HZ) {
|
||||
u_long tlimit = ktime_get(cmd->timeout_per_command - HZ);
|
||||
if (ktime_dif(np->settle_time, tlimit) > 0)
|
||||
u_long tlimit = jiffies + cmd->timeout_per_command - HZ;
|
||||
if (time_after(np->settle_time, tlimit))
|
||||
np->settle_time = tlimit;
|
||||
}
|
||||
|
||||
@ -3516,7 +3516,7 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
|
||||
** Force ordered tag if necessary to avoid timeouts
|
||||
** and to preserve interactivity.
|
||||
*/
|
||||
if (lp && ktime_exp(lp->tags_stime)) {
|
||||
if (lp && time_after(jiffies, lp->tags_stime)) {
|
||||
if (lp->tags_smap) {
|
||||
order = M_ORDERED_TAG;
|
||||
if ((DEBUG_FLAGS & DEBUG_TAGS)||bootverbose>2){
|
||||
@ -3524,7 +3524,7 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
|
||||
"ordered tag forced.\n");
|
||||
}
|
||||
}
|
||||
lp->tags_stime = ktime_get(3*HZ);
|
||||
lp->tags_stime = jiffies + 3*HZ;
|
||||
lp->tags_smap = lp->tags_umap;
|
||||
}
|
||||
|
||||
@ -3792,7 +3792,7 @@ static int ncr_reset_scsi_bus(struct ncb *np, int enab_int, int settle_delay)
|
||||
u32 term;
|
||||
int retv = 0;
|
||||
|
||||
np->settle_time = ktime_get(settle_delay * HZ);
|
||||
np->settle_time = jiffies + settle_delay * HZ;
|
||||
|
||||
if (bootverbose > 1)
|
||||
printk("%s: resetting, "
|
||||
@ -5044,7 +5044,7 @@ static void ncr_setup_tags (struct ncb *np, struct scsi_device *sdev)
|
||||
|
||||
static void ncr_timeout (struct ncb *np)
|
||||
{
|
||||
u_long thistime = ktime_get(0);
|
||||
u_long thistime = jiffies;
|
||||
|
||||
/*
|
||||
** If release process in progress, let's go
|
||||
@ -5057,7 +5057,7 @@ static void ncr_timeout (struct ncb *np)
|
||||
return;
|
||||
}
|
||||
|
||||
np->timer.expires = ktime_get(SCSI_NCR_TIMER_INTERVAL);
|
||||
np->timer.expires = jiffies + SCSI_NCR_TIMER_INTERVAL;
|
||||
add_timer(&np->timer);
|
||||
|
||||
/*
|
||||
@ -5336,8 +5336,8 @@ void ncr_exception (struct ncb *np)
|
||||
**=========================================================
|
||||
*/
|
||||
|
||||
if (ktime_exp(np->regtime)) {
|
||||
np->regtime = ktime_get(10*HZ);
|
||||
if (time_after(jiffies, np->regtime)) {
|
||||
np->regtime = jiffies + 10*HZ;
|
||||
for (i = 0; i<sizeof(np->regdump); i++)
|
||||
((char*)&np->regdump)[i] = INB_OFF(i);
|
||||
np->regdump.nc_dstat = dstat;
|
||||
@ -5453,7 +5453,7 @@ static int ncr_int_sbmc (struct ncb *np)
|
||||
** Suspend command processing for 1 second and
|
||||
** reinitialize all except the chip.
|
||||
*/
|
||||
np->settle_time = ktime_get(1*HZ);
|
||||
np->settle_time = jiffies + HZ;
|
||||
ncr_init (np, 0, bootverbose ? "scsi mode change" : NULL, HS_RESET);
|
||||
return 1;
|
||||
}
|
||||
@ -6923,7 +6923,7 @@ static struct lcb *ncr_setup_lcb (struct ncb *np, struct scsi_device *sdev)
|
||||
for (i = 0 ; i < MAX_TAGS ; i++)
|
||||
lp->cb_tags[i] = i;
|
||||
lp->maxnxs = MAX_TAGS;
|
||||
lp->tags_stime = ktime_get(3*HZ);
|
||||
lp->tags_stime = jiffies + 3*HZ;
|
||||
ncr_setup_tags (np, sdev);
|
||||
}
|
||||
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -280,19 +280,6 @@
|
||||
#define SCSI_NCR_MAX_LUN (1)
|
||||
#endif
|
||||
|
||||
/*
|
||||
** These simple macros limit expression involving
|
||||
** kernel time values (jiffies) to some that have
|
||||
** chance not to be too much incorrect. :-)
|
||||
*/
|
||||
#define ktime_get(o) (jiffies + (u_long) o)
|
||||
#define ktime_exp(b) ((long)(jiffies) - (long)(b) >= 0)
|
||||
#define ktime_dif(a, b) ((long)(a) - (long)(b))
|
||||
/* These ones are not used in this driver */
|
||||
#define ktime_add(a, o) ((a) + (u_long)(o))
|
||||
#define ktime_sub(a, o) ((a) - (u_long)(o))
|
||||
|
||||
|
||||
/*
|
||||
* IO functions definition for big/little endian CPU support.
|
||||
* For now, the NCR is only supported in little endian addressing mode,
|
||||
|
||||
@ -988,7 +988,15 @@ dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
||||
|
||||
if( residual )
|
||||
{
|
||||
static int feedback_requested;
|
||||
bval = DC390_read8 (ScsiFifo); /* get one residual byte */
|
||||
|
||||
if (!feedback_requested) {
|
||||
feedback_requested = 1;
|
||||
printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
|
||||
"to help improve support for your system.\n", __FILE__);
|
||||
}
|
||||
|
||||
ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
|
||||
*ptr = bval;
|
||||
pSRB->SGBusAddr++; xferCnt++;
|
||||
|
||||
245
include/scsi/iscsi_if.h
Normal file
245
include/scsi/iscsi_if.h
Normal file
@ -0,0 +1,245 @@
|
||||
/*
|
||||
* iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
|
||||
*
|
||||
* Copyright (C) 2005 Dmitry Yusupov
|
||||
* Copyright (C) 2005 Alex Aizman
|
||||
* maintained by open-iscsi@googlegroups.com
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published
|
||||
* by the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* General Public License for more details.
|
||||
*
|
||||
* See the file COPYING included with this distribution for more details.
|
||||
*/
|
||||
|
||||
#ifndef ISCSI_IF_H
|
||||
#define ISCSI_IF_H
|
||||
|
||||
#include <scsi/iscsi_proto.h>
|
||||
|
||||
#define UEVENT_BASE 10
|
||||
#define KEVENT_BASE 100
|
||||
#define ISCSI_ERR_BASE 1000
|
||||
|
||||
enum iscsi_uevent_e {
|
||||
ISCSI_UEVENT_UNKNOWN = 0,
|
||||
|
||||
/* down events */
|
||||
ISCSI_UEVENT_CREATE_SESSION = UEVENT_BASE + 1,
|
||||
ISCSI_UEVENT_DESTROY_SESSION = UEVENT_BASE + 2,
|
||||
ISCSI_UEVENT_CREATE_CONN = UEVENT_BASE + 3,
|
||||
ISCSI_UEVENT_DESTROY_CONN = UEVENT_BASE + 4,
|
||||
ISCSI_UEVENT_BIND_CONN = UEVENT_BASE + 5,
|
||||
ISCSI_UEVENT_SET_PARAM = UEVENT_BASE + 6,
|
||||
ISCSI_UEVENT_START_CONN = UEVENT_BASE + 7,
|
||||
ISCSI_UEVENT_STOP_CONN = UEVENT_BASE + 8,
|
||||
ISCSI_UEVENT_SEND_PDU = UEVENT_BASE + 9,
|
||||
ISCSI_UEVENT_GET_STATS = UEVENT_BASE + 10,
|
||||
ISCSI_UEVENT_GET_PARAM = UEVENT_BASE + 11,
|
||||
|
||||
/* up events */
|
||||
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
|
||||
ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
|
||||
ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
|
||||
};
|
||||
|
||||
struct iscsi_uevent {
|
||||
uint32_t type; /* k/u events type */
|
||||
uint32_t iferror; /* carries interface or resource errors */
|
||||
uint64_t transport_handle;
|
||||
|
||||
union {
|
||||
/* messages u -> k */
|
||||
struct msg_create_session {
|
||||
uint32_t initial_cmdsn;
|
||||
} c_session;
|
||||
struct msg_destroy_session {
|
||||
uint64_t session_handle;
|
||||
uint32_t sid;
|
||||
} d_session;
|
||||
struct msg_create_conn {
|
||||
uint64_t session_handle;
|
||||
uint32_t cid;
|
||||
uint32_t sid;
|
||||
} c_conn;
|
||||
struct msg_bind_conn {
|
||||
uint64_t session_handle;
|
||||
uint64_t conn_handle;
|
||||
uint32_t transport_fd;
|
||||
uint32_t is_leading;
|
||||
} b_conn;
|
||||
struct msg_destroy_conn {
|
||||
uint64_t conn_handle;
|
||||
uint32_t cid;
|
||||
} d_conn;
|
||||
struct msg_send_pdu {
|
||||
uint32_t hdr_size;
|
||||
uint32_t data_size;
|
||||
uint64_t conn_handle;
|
||||
} send_pdu;
|
||||
struct msg_set_param {
|
||||
uint64_t conn_handle;
|
||||
uint32_t param; /* enum iscsi_param */
|
||||
uint32_t value;
|
||||
} set_param;
|
||||
struct msg_start_conn {
|
||||
uint64_t conn_handle;
|
||||
} start_conn;
|
||||
struct msg_stop_conn {
|
||||
uint64_t conn_handle;
|
||||
uint32_t flag;
|
||||
} stop_conn;
|
||||
struct msg_get_stats {
|
||||
uint64_t conn_handle;
|
||||
} get_stats;
|
||||
} u;
|
||||
union {
|
||||
/* messages k -> u */
|
||||
uint64_t handle;
|
||||
int retcode;
|
||||
struct msg_create_session_ret {
|
||||
uint64_t session_handle;
|
||||
uint32_t sid;
|
||||
} c_session_ret;
|
||||
struct msg_recv_req {
|
||||
uint64_t recv_handle;
|
||||
uint64_t conn_handle;
|
||||
} recv_req;
|
||||
struct msg_conn_error {
|
||||
uint64_t conn_handle;
|
||||
uint32_t error; /* enum iscsi_err */
|
||||
} connerror;
|
||||
} r;
|
||||
} __attribute__ ((aligned (sizeof(uint64_t))));
|
||||
|
||||
/*
|
||||
* Common error codes
|
||||
*/
|
||||
enum iscsi_err {
|
||||
ISCSI_OK = 0,
|
||||
|
||||
ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
|
||||
ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
|
||||
ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
|
||||
ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
|
||||
ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
|
||||
ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
|
||||
ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
|
||||
ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
|
||||
ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
|
||||
ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
|
||||
ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
|
||||
ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
|
||||
ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
|
||||
ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
|
||||
ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
|
||||
ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16
|
||||
};
|
||||
|
||||
/*
|
||||
* iSCSI Parameters (RFC3720)
|
||||
*/
|
||||
enum iscsi_param {
|
||||
ISCSI_PARAM_MAX_RECV_DLENGTH = 0,
|
||||
ISCSI_PARAM_MAX_XMIT_DLENGTH = 1,
|
||||
ISCSI_PARAM_HDRDGST_EN = 2,
|
||||
ISCSI_PARAM_DATADGST_EN = 3,
|
||||
ISCSI_PARAM_INITIAL_R2T_EN = 4,
|
||||
ISCSI_PARAM_MAX_R2T = 5,
|
||||
ISCSI_PARAM_IMM_DATA_EN = 6,
|
||||
ISCSI_PARAM_FIRST_BURST = 7,
|
||||
ISCSI_PARAM_MAX_BURST = 8,
|
||||
ISCSI_PARAM_PDU_INORDER_EN = 9,
|
||||
ISCSI_PARAM_DATASEQ_INORDER_EN = 10,
|
||||
ISCSI_PARAM_ERL = 11,
|
||||
ISCSI_PARAM_IFMARKER_EN = 12,
|
||||
ISCSI_PARAM_OFMARKER_EN = 13,
|
||||
};
|
||||
#define ISCSI_PARAM_MAX 14
|
||||
|
||||
typedef uint64_t iscsi_sessionh_t; /* iSCSI Data-Path session handle */
|
||||
typedef uint64_t iscsi_connh_t; /* iSCSI Data-Path connection handle */
|
||||
|
||||
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
|
||||
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
|
||||
#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
|
||||
|
||||
/*
|
||||
* These flags presents iSCSI Data-Path capabilities.
|
||||
*/
|
||||
#define CAP_RECOVERY_L0 0x1
|
||||
#define CAP_RECOVERY_L1 0x2
|
||||
#define CAP_RECOVERY_L2 0x4
|
||||
#define CAP_MULTI_R2T 0x8
|
||||
#define CAP_HDRDGST 0x10
|
||||
#define CAP_DATADGST 0x20
|
||||
#define CAP_MULTI_CONN 0x40
|
||||
#define CAP_TEXT_NEGO 0x80
|
||||
#define CAP_MARKERS 0x100
|
||||
|
||||
/*
|
||||
* These flags describes reason of stop_conn() call
|
||||
*/
|
||||
#define STOP_CONN_TERM 0x1
|
||||
#define STOP_CONN_SUSPEND 0x2
|
||||
#define STOP_CONN_RECOVER 0x3
|
||||
|
||||
#define ISCSI_STATS_CUSTOM_MAX 32
|
||||
#define ISCSI_STATS_CUSTOM_DESC_MAX 64
|
||||
struct iscsi_stats_custom {
|
||||
char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
|
||||
uint64_t value;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
|
||||
*
|
||||
* Note: this structure contains counters collected on per-connection basis.
|
||||
*/
|
||||
struct iscsi_stats {
|
||||
/* octets */
|
||||
uint64_t txdata_octets;
|
||||
uint64_t rxdata_octets;
|
||||
|
||||
/* xmit pdus */
|
||||
uint32_t noptx_pdus;
|
||||
uint32_t scsicmd_pdus;
|
||||
uint32_t tmfcmd_pdus;
|
||||
uint32_t login_pdus;
|
||||
uint32_t text_pdus;
|
||||
uint32_t dataout_pdus;
|
||||
uint32_t logout_pdus;
|
||||
uint32_t snack_pdus;
|
||||
|
||||
/* recv pdus */
|
||||
uint32_t noprx_pdus;
|
||||
uint32_t scsirsp_pdus;
|
||||
uint32_t tmfrsp_pdus;
|
||||
uint32_t textrsp_pdus;
|
||||
uint32_t datain_pdus;
|
||||
uint32_t logoutrsp_pdus;
|
||||
uint32_t r2t_pdus;
|
||||
uint32_t async_pdus;
|
||||
uint32_t rjt_pdus;
|
||||
|
||||
/* errors */
|
||||
uint32_t digest_err;
|
||||
uint32_t timeout_err;
|
||||
|
||||
/*
|
||||
* iSCSI Custom Statistics support, i.e. Transport could
|
||||
* extend existing MIB statistics with its own specific statistics
|
||||
* up to ISCSI_STATS_CUSTOM_MAX
|
||||
*/
|
||||
uint32_t custom_length;
|
||||
struct iscsi_stats_custom custom[0]
|
||||
__attribute__ ((aligned (sizeof(uint64_t))));
|
||||
};
|
||||
|
||||
#endif
|
||||
589
include/scsi/iscsi_proto.h
Normal file
589
include/scsi/iscsi_proto.h
Normal file
@ -0,0 +1,589 @@
|
||||
/*
|
||||
* RFC 3720 (iSCSI) protocol data types
|
||||
*
|
||||
* Copyright (C) 2005 Dmitry Yusupov
|
||||
* Copyright (C) 2005 Alex Aizman
|
||||
* maintained by open-iscsi@googlegroups.com
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published
|
||||
* by the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* General Public License for more details.
|
||||
*
|
||||
* See the file COPYING included with this distribution for more details.
|
||||
*/
|
||||
|
||||
#ifndef ISCSI_PROTO_H
|
||||
#define ISCSI_PROTO_H
|
||||
|
||||
#define ISCSI_VERSION_STR "0.3"
|
||||
#define ISCSI_DATE_STR "22-Apr-2005"
|
||||
#define ISCSI_DRAFT20_VERSION 0x00
|
||||
|
||||
/* default iSCSI listen port for incoming connections */
|
||||
#define ISCSI_LISTEN_PORT 3260
|
||||
|
||||
/* Padding word length */
|
||||
#define PAD_WORD_LEN 4
|
||||
|
||||
/*
|
||||
* useful common(control and data pathes) macro
|
||||
*/
|
||||
#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))
|
||||
#define hton24(p, v) { \
|
||||
p[0] = (((v) >> 16) & 0xFF); \
|
||||
p[1] = (((v) >> 8) & 0xFF); \
|
||||
p[2] = ((v) & 0xFF); \
|
||||
}
|
||||
#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;}
|
||||
|
||||
/*
|
||||
* iSCSI Template Message Header
|
||||
*/
|
||||
struct iscsi_hdr {
|
||||
uint8_t opcode;
|
||||
uint8_t flags; /* Final bit */
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength; /* AHSs total length */
|
||||
uint8_t dlength[3]; /* Data length */
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Task Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_statsn;
|
||||
__be32 max_statsn;
|
||||
uint8_t other[12];
|
||||
};
|
||||
|
||||
/************************* RFC 3720 Begin *****************************/
|
||||
|
||||
#define ISCSI_RESERVED_TAG 0xffffffff
|
||||
|
||||
/* Opcode encoding bits */
|
||||
#define ISCSI_OP_RETRY 0x80
|
||||
#define ISCSI_OP_IMMEDIATE 0x40
|
||||
#define ISCSI_OPCODE_MASK 0x3F
|
||||
|
||||
/* Initiator Opcode values */
|
||||
#define ISCSI_OP_NOOP_OUT 0x00
|
||||
#define ISCSI_OP_SCSI_CMD 0x01
|
||||
#define ISCSI_OP_SCSI_TMFUNC 0x02
|
||||
#define ISCSI_OP_LOGIN 0x03
|
||||
#define ISCSI_OP_TEXT 0x04
|
||||
#define ISCSI_OP_SCSI_DATA_OUT 0x05
|
||||
#define ISCSI_OP_LOGOUT 0x06
|
||||
#define ISCSI_OP_SNACK 0x10
|
||||
|
||||
#define ISCSI_OP_VENDOR1_CMD 0x1c
|
||||
#define ISCSI_OP_VENDOR2_CMD 0x1d
|
||||
#define ISCSI_OP_VENDOR3_CMD 0x1e
|
||||
#define ISCSI_OP_VENDOR4_CMD 0x1f
|
||||
|
||||
/* Target Opcode values */
|
||||
#define ISCSI_OP_NOOP_IN 0x20
|
||||
#define ISCSI_OP_SCSI_CMD_RSP 0x21
|
||||
#define ISCSI_OP_SCSI_TMFUNC_RSP 0x22
|
||||
#define ISCSI_OP_LOGIN_RSP 0x23
|
||||
#define ISCSI_OP_TEXT_RSP 0x24
|
||||
#define ISCSI_OP_SCSI_DATA_IN 0x25
|
||||
#define ISCSI_OP_LOGOUT_RSP 0x26
|
||||
#define ISCSI_OP_R2T 0x31
|
||||
#define ISCSI_OP_ASYNC_EVENT 0x32
|
||||
#define ISCSI_OP_REJECT 0x3f
|
||||
|
||||
struct iscsi_ahs_hdr {
|
||||
__be16 ahslength;
|
||||
uint8_t ahstype;
|
||||
uint8_t ahspec[5];
|
||||
};
|
||||
|
||||
#define ISCSI_AHSTYPE_CDB 1
|
||||
#define ISCSI_AHSTYPE_RLENGTH 2
|
||||
|
||||
/* iSCSI PDU Header */
|
||||
struct iscsi_cmd {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
__be16 rsvd2;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 data_length;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t cdb[16]; /* SCSI Command Block */
|
||||
/* Additional Data (Command Dependent) */
|
||||
};
|
||||
|
||||
/* Command PDU flags */
|
||||
#define ISCSI_FLAG_CMD_FINAL 0x80
|
||||
#define ISCSI_FLAG_CMD_READ 0x40
|
||||
#define ISCSI_FLAG_CMD_WRITE 0x20
|
||||
#define ISCSI_FLAG_CMD_ATTR_MASK 0x07 /* 3 bits */
|
||||
|
||||
/* SCSI Command Attribute values */
|
||||
#define ISCSI_ATTR_UNTAGGED 0
|
||||
#define ISCSI_ATTR_SIMPLE 1
|
||||
#define ISCSI_ATTR_ORDERED 2
|
||||
#define ISCSI_ATTR_HEAD_OF_QUEUE 3
|
||||
#define ISCSI_ATTR_ACA 4
|
||||
|
||||
struct iscsi_rlength_ahdr {
|
||||
__be16 ahslength;
|
||||
uint8_t ahstype;
|
||||
uint8_t reserved;
|
||||
__be32 read_length;
|
||||
};
|
||||
|
||||
/* SCSI Response Header */
|
||||
struct iscsi_cmd_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response;
|
||||
uint8_t cmd_status;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd1;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 exp_datasn;
|
||||
__be32 bi_residual_count;
|
||||
__be32 residual_count;
|
||||
/* Response or Sense Data (optional) */
|
||||
};
|
||||
|
||||
/* Command Response PDU flags */
|
||||
#define ISCSI_FLAG_CMD_BIDI_OVERFLOW 0x10
|
||||
#define ISCSI_FLAG_CMD_BIDI_UNDERFLOW 0x08
|
||||
#define ISCSI_FLAG_CMD_OVERFLOW 0x04
|
||||
#define ISCSI_FLAG_CMD_UNDERFLOW 0x02
|
||||
|
||||
/* iSCSI Status values. Valid if Rsp Selector bit is not set */
|
||||
#define ISCSI_STATUS_CMD_COMPLETED 0
|
||||
#define ISCSI_STATUS_TARGET_FAILURE 1
|
||||
#define ISCSI_STATUS_SUBSYS_FAILURE 2
|
||||
|
||||
/* Asynchronous Event Header */
|
||||
struct iscsi_async {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t async_event;
|
||||
uint8_t async_vcode;
|
||||
__be16 param1;
|
||||
__be16 param2;
|
||||
__be16 param3;
|
||||
uint8_t rsvd5[4];
|
||||
};
|
||||
|
||||
/* iSCSI Event Codes */
|
||||
#define ISCSI_ASYNC_MSG_SCSI_EVENT 0
|
||||
#define ISCSI_ASYNC_MSG_REQUEST_LOGOUT 1
|
||||
#define ISCSI_ASYNC_MSG_DROPPING_CONNECTION 2
|
||||
#define ISCSI_ASYNC_MSG_DROPPING_ALL_CONNECTIONS 3
|
||||
#define ISCSI_ASYNC_MSG_PARAM_NEGOTIATION 4
|
||||
#define ISCSI_ASYNC_MSG_VENDOR_SPECIFIC 255
|
||||
|
||||
/* NOP-Out Message */
|
||||
struct iscsi_nopout {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
__be16 rsvd2;
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd4[16];
|
||||
};
|
||||
|
||||
/* NOP-In Message */
|
||||
struct iscsi_nopin {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
__be16 rsvd2;
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd4[12];
|
||||
};
|
||||
|
||||
/* SCSI Task Management Message Header */
|
||||
struct iscsi_tm {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd1[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rtt; /* Reference Task Tag */
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
__be32 refcmdsn;
|
||||
__be32 exp_datasn;
|
||||
uint8_t rsvd2[8];
|
||||
};
|
||||
|
||||
#define ISCSI_FLAG_TM_FUNC_MASK 0x7F
|
||||
|
||||
/* Function values */
|
||||
#define ISCSI_TM_FUNC_ABORT_TASK 1
|
||||
#define ISCSI_TM_FUNC_ABORT_TASK_SET 2
|
||||
#define ISCSI_TM_FUNC_CLEAR_ACA 3
|
||||
#define ISCSI_TM_FUNC_CLEAR_TASK_SET 4
|
||||
#define ISCSI_TM_FUNC_LOGICAL_UNIT_RESET 5
|
||||
#define ISCSI_TM_FUNC_TARGET_WARM_RESET 6
|
||||
#define ISCSI_TM_FUNC_TARGET_COLD_RESET 7
|
||||
#define ISCSI_TM_FUNC_TASK_REASSIGN 8
|
||||
|
||||
/* SCSI Task Management Response Header */
|
||||
struct iscsi_tm_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response; /* see Response values below */
|
||||
uint8_t qualifier;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd2[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rtt; /* Reference Task Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd3[12];
|
||||
};
|
||||
|
||||
/* Response values */
|
||||
#define ISCSI_TMF_RSP_COMPLETE 0x00
|
||||
#define ISCSI_TMF_RSP_NO_TASK 0x01
|
||||
#define ISCSI_TMF_RSP_NO_LUN 0x02
|
||||
#define ISCSI_TMF_RSP_TASK_ALLEGIANT 0x03
|
||||
#define ISCSI_TMF_RSP_NO_FAILOVER 0x04
|
||||
#define ISCSI_TMF_RSP_NOT_SUPPORTED 0x05
|
||||
#define ISCSI_TMF_RSP_AUTH_FAILED 0x06
|
||||
#define ISCSI_TMF_RSP_REJECTED 0xff
|
||||
|
||||
/* Ready To Transfer Header */
|
||||
struct iscsi_r2t_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 r2tsn;
|
||||
__be32 data_offset;
|
||||
__be32 data_length;
|
||||
};
|
||||
|
||||
/* SCSI Data Hdr */
|
||||
struct iscsi_data {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 rsvd4;
|
||||
__be32 exp_statsn;
|
||||
__be32 rsvd5;
|
||||
__be32 datasn;
|
||||
__be32 offset;
|
||||
__be32 rsvd6;
|
||||
/* Payload */
|
||||
};
|
||||
|
||||
/* SCSI Data Response Hdr */
|
||||
struct iscsi_data_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2;
|
||||
uint8_t cmd_status;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 datasn;
|
||||
__be32 offset;
|
||||
__be32 residual_count;
|
||||
};
|
||||
|
||||
/* Data Response PDU flags */
|
||||
#define ISCSI_FLAG_DATA_ACK 0x40
|
||||
#define ISCSI_FLAG_DATA_OVERFLOW 0x04
|
||||
#define ISCSI_FLAG_DATA_UNDERFLOW 0x02
|
||||
#define ISCSI_FLAG_DATA_STATUS 0x01
|
||||
|
||||
/* Text Header */
|
||||
struct iscsi_text {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd5[16];
|
||||
/* Text - key=value pairs */
|
||||
};
|
||||
|
||||
#define ISCSI_FLAG_TEXT_CONTINUE 0x40
|
||||
|
||||
/* Text Response Header */
|
||||
struct iscsi_text_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd5[12];
|
||||
/* Text Response - key:value pairs */
|
||||
};
|
||||
|
||||
/* Login Header */
|
||||
struct iscsi_login {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t max_version; /* Max. version supported */
|
||||
uint8_t min_version; /* Min. version supported */
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t isid[6]; /* Initiator Session ID */
|
||||
__be16 tsih; /* Target Session Handle */
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be16 cid;
|
||||
__be16 rsvd3;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd5[16];
|
||||
};
|
||||
|
||||
/* Login PDU flags */
|
||||
#define ISCSI_FLAG_LOGIN_TRANSIT 0x80
|
||||
#define ISCSI_FLAG_LOGIN_CONTINUE 0x40
|
||||
#define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK 0x0C /* 2 bits */
|
||||
#define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK 0x03 /* 2 bits */
|
||||
|
||||
#define ISCSI_LOGIN_CURRENT_STAGE(flags) \
|
||||
((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2)
|
||||
#define ISCSI_LOGIN_NEXT_STAGE(flags) \
|
||||
(flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK)
|
||||
|
||||
/* Login Response Header */
|
||||
struct iscsi_login_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t max_version; /* Max. version supported */
|
||||
uint8_t active_version; /* Active version */
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t isid[6]; /* Initiator Session ID */
|
||||
__be16 tsih; /* Target Session Handle */
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd3;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t status_class; /* see Login RSP ststus classes below */
|
||||
uint8_t status_detail; /* see Login RSP Status details below */
|
||||
uint8_t rsvd4[10];
|
||||
};
|
||||
|
||||
/* Login stage (phase) codes for CSG, NSG */
|
||||
#define ISCSI_INITIAL_LOGIN_STAGE -1
|
||||
#define ISCSI_SECURITY_NEGOTIATION_STAGE 0
|
||||
#define ISCSI_OP_PARMS_NEGOTIATION_STAGE 1
|
||||
#define ISCSI_FULL_FEATURE_PHASE 3
|
||||
|
||||
/* Login Status response classes */
|
||||
#define ISCSI_STATUS_CLS_SUCCESS 0x00
|
||||
#define ISCSI_STATUS_CLS_REDIRECT 0x01
|
||||
#define ISCSI_STATUS_CLS_INITIATOR_ERR 0x02
|
||||
#define ISCSI_STATUS_CLS_TARGET_ERR 0x03
|
||||
|
||||
/* Login Status response detail codes */
|
||||
/* Class-0 (Success) */
|
||||
#define ISCSI_LOGIN_STATUS_ACCEPT 0x00
|
||||
|
||||
/* Class-1 (Redirection) */
|
||||
#define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP 0x01
|
||||
#define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM 0x02
|
||||
|
||||
/* Class-2 (Initiator Error) */
|
||||
#define ISCSI_LOGIN_STATUS_INIT_ERR 0x00
|
||||
#define ISCSI_LOGIN_STATUS_AUTH_FAILED 0x01
|
||||
#define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN 0x02
|
||||
#define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND 0x03
|
||||
#define ISCSI_LOGIN_STATUS_TGT_REMOVED 0x04
|
||||
#define ISCSI_LOGIN_STATUS_NO_VERSION 0x05
|
||||
#define ISCSI_LOGIN_STATUS_ISID_ERROR 0x06
|
||||
#define ISCSI_LOGIN_STATUS_MISSING_FIELDS 0x07
|
||||
#define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED 0x08
|
||||
#define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE 0x09
|
||||
#define ISCSI_LOGIN_STATUS_NO_SESSION 0x0a
|
||||
#define ISCSI_LOGIN_STATUS_INVALID_REQUEST 0x0b
|
||||
|
||||
/* Class-3 (Target Error) */
|
||||
#define ISCSI_LOGIN_STATUS_TARGET_ERROR 0x00
|
||||
#define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE 0x01
|
||||
#define ISCSI_LOGIN_STATUS_NO_RESOURCES 0x02
|
||||
|
||||
/* Logout Header */
|
||||
struct iscsi_logout {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd1[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd2[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be16 cid;
|
||||
uint8_t rsvd3[2];
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd4[16];
|
||||
};
|
||||
|
||||
/* Logout PDU flags */
|
||||
#define ISCSI_FLAG_LOGOUT_REASON_MASK 0x7F
|
||||
|
||||
/* logout reason_code values */
|
||||
|
||||
#define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0
|
||||
#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1
|
||||
#define ISCSI_LOGOUT_REASON_RECOVERY 2
|
||||
#define ISCSI_LOGOUT_REASON_AEN_REQUEST 3
|
||||
|
||||
/* Logout Response Header */
|
||||
struct iscsi_logout_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response; /* see Logout response values below */
|
||||
uint8_t rsvd2;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd3[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd4;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 rsvd5;
|
||||
__be16 t2wait;
|
||||
__be16 t2retain;
|
||||
__be32 rsvd6;
|
||||
};
|
||||
|
||||
/* logout response status values */
|
||||
|
||||
#define ISCSI_LOGOUT_SUCCESS 0
|
||||
#define ISCSI_LOGOUT_CID_NOT_FOUND 1
|
||||
#define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED 2
|
||||
#define ISCSI_LOGOUT_CLEANUP_FAILED 3
|
||||
|
||||
/* SNACK Header */
|
||||
struct iscsi_snack {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[14];
|
||||
__be32 itt;
|
||||
__be32 begrun;
|
||||
__be32 runlength;
|
||||
__be32 exp_statsn;
|
||||
__be32 rsvd3;
|
||||
__be32 exp_datasn;
|
||||
uint8_t rsvd6[8];
|
||||
};
|
||||
|
||||
/* SNACK PDU flags */
|
||||
#define ISCSI_FLAG_SNACK_TYPE_MASK 0x0F /* 4 bits */
|
||||
|
||||
/* Reject Message Header */
|
||||
struct iscsi_reject {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t reason;
|
||||
uint8_t rsvd2;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd3[8];
|
||||
__be32 ffffffff;
|
||||
uint8_t rsvd4[4];
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 datasn;
|
||||
uint8_t rsvd5[8];
|
||||
/* Text - Rejected hdr */
|
||||
};
|
||||
|
||||
/* Reason for Reject */
|
||||
#define ISCSI_REASON_CMD_BEFORE_LOGIN 1
|
||||
#define ISCSI_REASON_DATA_DIGEST_ERROR 2
|
||||
#define ISCSI_REASON_DATA_SNACK_REJECT 3
|
||||
#define ISCSI_REASON_PROTOCOL_ERROR 4
|
||||
#define ISCSI_REASON_CMD_NOT_SUPPORTED 5
|
||||
#define ISCSI_REASON_IMM_CMD_REJECT 6
|
||||
#define ISCSI_REASON_TASK_IN_PROGRESS 7
|
||||
#define ISCSI_REASON_INVALID_SNACK 8
|
||||
#define ISCSI_REASON_BOOKMARK_INVALID 9
|
||||
#define ISCSI_REASON_BOOKMARK_NO_RESOURCES 10
|
||||
#define ISCSI_REASON_NEGOTIATION_RESET 11
|
||||
|
||||
/* Max. number of Key=Value pairs in a text message */
|
||||
#define MAX_KEY_VALUE_PAIRS 8192
|
||||
|
||||
/* maximum length for text keys/values */
|
||||
#define KEY_MAXLEN 64
|
||||
#define VALUE_MAXLEN 255
|
||||
#define TARGET_NAME_MAXLEN VALUE_MAXLEN
|
||||
|
||||
#define DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH 8192
|
||||
|
||||
/************************* RFC 3720 End *****************************/
|
||||
|
||||
#endif /* ISCSI_PROTO_H */
|
||||
@ -1,8 +1,10 @@
|
||||
/*
|
||||
/*
|
||||
* iSCSI transport class definitions
|
||||
*
|
||||
* Copyright (C) IBM Corporation, 2004
|
||||
* Copyright (C) Mike Christie, 2004
|
||||
* Copyright (C) Mike Christie, 2004 - 2005
|
||||
* Copyright (C) Dmitry Yusupov, 2004 - 2005
|
||||
* Copyright (C) Alex Aizman, 2004 - 2005
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
@ -21,158 +23,64 @@
|
||||
#ifndef SCSI_TRANSPORT_ISCSI_H
|
||||
#define SCSI_TRANSPORT_ISCSI_H
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/in6.h>
|
||||
#include <linux/in.h>
|
||||
#include <scsi/iscsi_if.h>
|
||||
|
||||
struct scsi_transport_template;
|
||||
|
||||
struct iscsi_class_session {
|
||||
uint8_t isid[6];
|
||||
uint16_t tsih;
|
||||
int header_digest; /* 1 CRC32, 0 None */
|
||||
int data_digest; /* 1 CRC32, 0 None */
|
||||
uint16_t tpgt;
|
||||
union {
|
||||
struct in6_addr sin6_addr;
|
||||
struct in_addr sin_addr;
|
||||
} u;
|
||||
sa_family_t addr_type; /* must be AF_INET or AF_INET6 */
|
||||
uint16_t port; /* must be in network byte order */
|
||||
int initial_r2t; /* 1 Yes, 0 No */
|
||||
int immediate_data; /* 1 Yes, 0 No */
|
||||
uint32_t max_recv_data_segment_len;
|
||||
uint32_t max_burst_len;
|
||||
uint32_t first_burst_len;
|
||||
uint16_t def_time2wait;
|
||||
uint16_t def_time2retain;
|
||||
uint16_t max_outstanding_r2t;
|
||||
int data_pdu_in_order; /* 1 Yes, 0 No */
|
||||
int data_sequence_in_order; /* 1 Yes, 0 No */
|
||||
int erl;
|
||||
/**
|
||||
* struct iscsi_transport - iSCSI Transport template
|
||||
*
|
||||
* @name: transport name
|
||||
* @caps: iSCSI Data-Path capabilities
|
||||
* @create_session: create new iSCSI session object
|
||||
* @destroy_session: destroy existing iSCSI session object
|
||||
* @create_conn: create new iSCSI connection
|
||||
* @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
|
||||
* @start_conn: set connection to be operational
|
||||
* @stop_conn: suspend/recover/terminate connection
|
||||
* @send_pdu: send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
|
||||
*
|
||||
* Template API provided by iSCSI Transport
|
||||
*/
|
||||
struct iscsi_transport {
|
||||
struct module *owner;
|
||||
char *name;
|
||||
unsigned int caps;
|
||||
struct scsi_host_template *host_template;
|
||||
int hostdata_size;
|
||||
int max_lun;
|
||||
unsigned int max_conn;
|
||||
unsigned int max_cmd_len;
|
||||
iscsi_sessionh_t (*create_session) (uint32_t initial_cmdsn,
|
||||
struct Scsi_Host *shost);
|
||||
void (*destroy_session) (iscsi_sessionh_t session);
|
||||
iscsi_connh_t (*create_conn) (iscsi_sessionh_t session, uint32_t cid);
|
||||
int (*bind_conn) (iscsi_sessionh_t session, iscsi_connh_t conn,
|
||||
uint32_t transport_fd, int is_leading);
|
||||
int (*start_conn) (iscsi_connh_t conn);
|
||||
void (*stop_conn) (iscsi_connh_t conn, int flag);
|
||||
void (*destroy_conn) (iscsi_connh_t conn);
|
||||
int (*set_param) (iscsi_connh_t conn, enum iscsi_param param,
|
||||
uint32_t value);
|
||||
int (*get_param) (iscsi_connh_t conn, enum iscsi_param param,
|
||||
uint32_t *value);
|
||||
int (*send_pdu) (iscsi_connh_t conn, struct iscsi_hdr *hdr,
|
||||
char *data, uint32_t data_size);
|
||||
void (*get_stats) (iscsi_connh_t conn, struct iscsi_stats *stats);
|
||||
};
|
||||
|
||||
/*
|
||||
* accessor macros
|
||||
* transport registration upcalls
|
||||
*/
|
||||
#define iscsi_isid(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->isid)
|
||||
#define iscsi_tsih(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->tsih)
|
||||
#define iscsi_header_digest(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->header_digest)
|
||||
#define iscsi_data_digest(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->data_digest)
|
||||
#define iscsi_port(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->port)
|
||||
#define iscsi_addr_type(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->addr_type)
|
||||
#define iscsi_sin_addr(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->u.sin_addr)
|
||||
#define iscsi_sin6_addr(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->u.sin6_addr)
|
||||
#define iscsi_tpgt(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->tpgt)
|
||||
#define iscsi_initial_r2t(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->initial_r2t)
|
||||
#define iscsi_immediate_data(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->immediate_data)
|
||||
#define iscsi_max_recv_data_segment_len(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->max_recv_data_segment_len)
|
||||
#define iscsi_max_burst_len(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->max_burst_len)
|
||||
#define iscsi_first_burst_len(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->first_burst_len)
|
||||
#define iscsi_def_time2wait(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->def_time2wait)
|
||||
#define iscsi_def_time2retain(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->def_time2retain)
|
||||
#define iscsi_max_outstanding_r2t(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->max_outstanding_r2t)
|
||||
#define iscsi_data_pdu_in_order(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->data_pdu_in_order)
|
||||
#define iscsi_data_sequence_in_order(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->data_sequence_in_order)
|
||||
#define iscsi_erl(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->erl)
|
||||
extern int iscsi_register_transport(struct iscsi_transport *tt);
|
||||
extern int iscsi_unregister_transport(struct iscsi_transport *tt);
|
||||
|
||||
/*
|
||||
* The functions by which the transport class and the driver communicate
|
||||
* control plane upcalls
|
||||
*/
|
||||
struct iscsi_function_template {
|
||||
/*
|
||||
* target attrs
|
||||
*/
|
||||
void (*get_isid)(struct scsi_target *);
|
||||
void (*get_tsih)(struct scsi_target *);
|
||||
void (*get_header_digest)(struct scsi_target *);
|
||||
void (*get_data_digest)(struct scsi_target *);
|
||||
void (*get_port)(struct scsi_target *);
|
||||
void (*get_tpgt)(struct scsi_target *);
|
||||
/*
|
||||
* In get_ip_address the lld must set the address and
|
||||
* the address type
|
||||
*/
|
||||
void (*get_ip_address)(struct scsi_target *);
|
||||
/*
|
||||
* The lld should snprintf the name or alias to the buffer
|
||||
*/
|
||||
ssize_t (*get_target_name)(struct scsi_target *, char *, ssize_t);
|
||||
ssize_t (*get_target_alias)(struct scsi_target *, char *, ssize_t);
|
||||
void (*get_initial_r2t)(struct scsi_target *);
|
||||
void (*get_immediate_data)(struct scsi_target *);
|
||||
void (*get_max_recv_data_segment_len)(struct scsi_target *);
|
||||
void (*get_max_burst_len)(struct scsi_target *);
|
||||
void (*get_first_burst_len)(struct scsi_target *);
|
||||
void (*get_def_time2wait)(struct scsi_target *);
|
||||
void (*get_def_time2retain)(struct scsi_target *);
|
||||
void (*get_max_outstanding_r2t)(struct scsi_target *);
|
||||
void (*get_data_pdu_in_order)(struct scsi_target *);
|
||||
void (*get_data_sequence_in_order)(struct scsi_target *);
|
||||
void (*get_erl)(struct scsi_target *);
|
||||
|
||||
/*
|
||||
* host atts
|
||||
*/
|
||||
|
||||
/*
|
||||
* The lld should snprintf the name or alias to the buffer
|
||||
*/
|
||||
ssize_t (*get_initiator_alias)(struct Scsi_Host *, char *, ssize_t);
|
||||
ssize_t (*get_initiator_name)(struct Scsi_Host *, char *, ssize_t);
|
||||
/*
|
||||
* The driver sets these to tell the transport class it
|
||||
* wants the attributes displayed in sysfs. If the show_ flag
|
||||
* is not set, the attribute will be private to the transport
|
||||
* class. We could probably just test if a get_ fn was set
|
||||
* since we only use the values for sysfs but this is how
|
||||
* fc does it too.
|
||||
*/
|
||||
unsigned long show_isid:1;
|
||||
unsigned long show_tsih:1;
|
||||
unsigned long show_header_digest:1;
|
||||
unsigned long show_data_digest:1;
|
||||
unsigned long show_port:1;
|
||||
unsigned long show_tpgt:1;
|
||||
unsigned long show_ip_address:1;
|
||||
unsigned long show_target_name:1;
|
||||
unsigned long show_target_alias:1;
|
||||
unsigned long show_initial_r2t:1;
|
||||
unsigned long show_immediate_data:1;
|
||||
unsigned long show_max_recv_data_segment_len:1;
|
||||
unsigned long show_max_burst_len:1;
|
||||
unsigned long show_first_burst_len:1;
|
||||
unsigned long show_def_time2wait:1;
|
||||
unsigned long show_def_time2retain:1;
|
||||
unsigned long show_max_outstanding_r2t:1;
|
||||
unsigned long show_data_pdu_in_order:1;
|
||||
unsigned long show_data_sequence_in_order:1;
|
||||
unsigned long show_erl:1;
|
||||
unsigned long show_initiator_name:1;
|
||||
unsigned long show_initiator_alias:1;
|
||||
};
|
||||
|
||||
struct scsi_transport_template *iscsi_attach_transport(struct iscsi_function_template *);
|
||||
void iscsi_release_transport(struct scsi_transport_template *);
|
||||
extern void iscsi_conn_error(iscsi_connh_t conn, enum iscsi_err error);
|
||||
extern int iscsi_recv_pdu(iscsi_connh_t conn, struct iscsi_hdr *hdr,
|
||||
char *data, uint32_t data_size);
|
||||
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user