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[PATCH] iscsi endianness annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
04d4f7a114
commit
b437735645
@ -567,7 +567,7 @@ void iser_rcv_completion(struct iser_desc *rx_desc,
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opcode = hdr->opcode & ISCSI_OPCODE_MASK;
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opcode = hdr->opcode & ISCSI_OPCODE_MASK;
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if (opcode == ISCSI_OP_SCSI_CMD_RSP) {
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if (opcode == ISCSI_OP_SCSI_CMD_RSP) {
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itt = hdr->itt & ISCSI_ITT_MASK; /* mask out cid and age bits */
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itt = get_itt(hdr->itt); /* mask out cid and age bits */
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if (!(itt < session->cmds_max))
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if (!(itt < session->cmds_max))
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iser_err("itt can't be matched to task!!!"
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iser_err("itt can't be matched to task!!!"
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"conn %p opcode %d cmds_max %d itt %d\n",
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"conn %p opcode %d cmds_max %d itt %d\n",
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@ -625,7 +625,7 @@ void iser_snd_completion(struct iser_desc *tx_desc)
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/* this arithmetic is legal by libiscsi dd_data allocation */
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/* this arithmetic is legal by libiscsi dd_data allocation */
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mtask = (void *) ((long)(void *)tx_desc -
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mtask = (void *) ((long)(void *)tx_desc -
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sizeof(struct iscsi_mgmt_task));
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sizeof(struct iscsi_mgmt_task));
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if (mtask->hdr->itt == cpu_to_be32(ISCSI_RESERVED_TAG)) {
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if (mtask->hdr->itt == RESERVED_ITT) {
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struct iscsi_session *session = conn->session;
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struct iscsi_session *session = conn->session;
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spin_lock(&conn->session->lock);
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spin_lock(&conn->session->lock);
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@ -1375,7 +1375,7 @@ iscsi_tcp_mtask_xmit(struct iscsi_conn *conn, struct iscsi_mgmt_task *mtask)
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}
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}
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BUG_ON(tcp_mtask->xmstate != XMSTATE_IDLE);
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BUG_ON(tcp_mtask->xmstate != XMSTATE_IDLE);
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if (mtask->hdr->itt == cpu_to_be32(ISCSI_RESERVED_TAG)) {
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if (mtask->hdr->itt == RESERVED_ITT) {
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struct iscsi_session *session = conn->session;
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struct iscsi_session *session = conn->session;
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spin_lock_bh(&session->lock);
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spin_lock_bh(&session->lock);
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@ -113,8 +113,7 @@ static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
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hdr->opcode = ISCSI_OP_SCSI_CMD;
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hdr->opcode = ISCSI_OP_SCSI_CMD;
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hdr->flags = ISCSI_ATTR_SIMPLE;
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hdr->flags = ISCSI_ATTR_SIMPLE;
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int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun);
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int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun);
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hdr->itt = ctask->itt | (conn->id << ISCSI_CID_SHIFT) |
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hdr->itt = build_itt(ctask->itt, conn->id, session->age);
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(session->age << ISCSI_AGE_SHIFT);
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hdr->data_length = cpu_to_be32(sc->request_bufflen);
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hdr->data_length = cpu_to_be32(sc->request_bufflen);
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hdr->cmdsn = cpu_to_be32(session->cmdsn);
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hdr->cmdsn = cpu_to_be32(session->cmdsn);
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session->cmdsn++;
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session->cmdsn++;
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@ -270,7 +269,7 @@ invalid_datalen:
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goto out;
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goto out;
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}
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}
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senselen = be16_to_cpu(*(uint16_t *)data);
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senselen = be16_to_cpu(*(__be16 *)data);
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if (datalen < senselen)
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if (datalen < senselen)
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goto invalid_datalen;
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goto invalid_datalen;
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@ -338,7 +337,7 @@ static int iscsi_handle_reject(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
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if (ntoh24(reject->dlength) >= sizeof(struct iscsi_hdr)) {
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if (ntoh24(reject->dlength) >= sizeof(struct iscsi_hdr)) {
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memcpy(&rejected_pdu, data, sizeof(struct iscsi_hdr));
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memcpy(&rejected_pdu, data, sizeof(struct iscsi_hdr));
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itt = rejected_pdu.itt & ISCSI_ITT_MASK;
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itt = get_itt(rejected_pdu.itt);
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printk(KERN_ERR "itt 0x%x had pdu (op 0x%x) rejected "
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printk(KERN_ERR "itt 0x%x had pdu (op 0x%x) rejected "
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"due to DataDigest error.\n", itt,
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"due to DataDigest error.\n", itt,
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rejected_pdu.opcode);
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rejected_pdu.opcode);
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@ -367,10 +366,10 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
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struct iscsi_mgmt_task *mtask;
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struct iscsi_mgmt_task *mtask;
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uint32_t itt;
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uint32_t itt;
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if (hdr->itt != cpu_to_be32(ISCSI_RESERVED_TAG))
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if (hdr->itt != RESERVED_ITT)
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itt = hdr->itt & ISCSI_ITT_MASK;
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itt = get_itt(hdr->itt);
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else
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else
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itt = hdr->itt;
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itt = ~0U;
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if (itt < session->cmds_max) {
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if (itt < session->cmds_max) {
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ctask = session->cmds[itt];
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ctask = session->cmds[itt];
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@ -440,7 +439,7 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
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iscsi_tmf_rsp(conn, hdr);
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iscsi_tmf_rsp(conn, hdr);
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break;
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break;
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case ISCSI_OP_NOOP_IN:
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case ISCSI_OP_NOOP_IN:
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if (hdr->ttt != ISCSI_RESERVED_TAG || datalen) {
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if (hdr->ttt != cpu_to_be32(ISCSI_RESERVED_TAG) || datalen) {
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rc = ISCSI_ERR_PROTO;
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rc = ISCSI_ERR_PROTO;
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break;
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break;
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}
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}
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@ -457,7 +456,7 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
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rc = ISCSI_ERR_BAD_OPCODE;
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rc = ISCSI_ERR_BAD_OPCODE;
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break;
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break;
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}
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}
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} else if (itt == ISCSI_RESERVED_TAG) {
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} else if (itt == ~0U) {
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rc = iscsi_check_assign_cmdsn(session,
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rc = iscsi_check_assign_cmdsn(session,
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(struct iscsi_nopin*)hdr);
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(struct iscsi_nopin*)hdr);
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if (rc)
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if (rc)
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@ -470,7 +469,7 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
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break;
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break;
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}
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}
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if (hdr->ttt == ISCSI_RESERVED_TAG)
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if (hdr->ttt == cpu_to_be32(ISCSI_RESERVED_TAG))
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break;
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break;
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if (iscsi_recv_pdu(conn->cls_conn, hdr, NULL, 0))
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if (iscsi_recv_pdu(conn->cls_conn, hdr, NULL, 0))
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@ -516,24 +515,24 @@ int iscsi_verify_itt(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
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struct iscsi_cmd_task *ctask;
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struct iscsi_cmd_task *ctask;
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uint32_t itt;
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uint32_t itt;
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if (hdr->itt != cpu_to_be32(ISCSI_RESERVED_TAG)) {
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if (hdr->itt != RESERVED_ITT) {
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if ((hdr->itt & ISCSI_AGE_MASK) !=
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if (((__force u32)hdr->itt & ISCSI_AGE_MASK) !=
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(session->age << ISCSI_AGE_SHIFT)) {
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(session->age << ISCSI_AGE_SHIFT)) {
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printk(KERN_ERR "iscsi: received itt %x expected "
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printk(KERN_ERR "iscsi: received itt %x expected "
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"session age (%x)\n", hdr->itt,
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"session age (%x)\n", (__force u32)hdr->itt,
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session->age & ISCSI_AGE_MASK);
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session->age & ISCSI_AGE_MASK);
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return ISCSI_ERR_BAD_ITT;
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return ISCSI_ERR_BAD_ITT;
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}
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}
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if ((hdr->itt & ISCSI_CID_MASK) !=
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if (((__force u32)hdr->itt & ISCSI_CID_MASK) !=
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(conn->id << ISCSI_CID_SHIFT)) {
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(conn->id << ISCSI_CID_SHIFT)) {
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printk(KERN_ERR "iscsi: received itt %x, expected "
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printk(KERN_ERR "iscsi: received itt %x, expected "
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"CID (%x)\n", hdr->itt, conn->id);
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"CID (%x)\n", (__force u32)hdr->itt, conn->id);
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return ISCSI_ERR_BAD_ITT;
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return ISCSI_ERR_BAD_ITT;
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}
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}
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itt = hdr->itt & ISCSI_ITT_MASK;
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itt = get_itt(hdr->itt);
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} else
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} else
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itt = hdr->itt;
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itt = ~0U;
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if (itt < session->cmds_max) {
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if (itt < session->cmds_max) {
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ctask = session->cmds[itt];
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ctask = session->cmds[itt];
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@ -896,9 +895,8 @@ iscsi_conn_send_generic(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
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/*
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/*
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* pre-format CmdSN for outgoing PDU.
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* pre-format CmdSN for outgoing PDU.
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*/
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*/
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if (hdr->itt != cpu_to_be32(ISCSI_RESERVED_TAG)) {
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if (hdr->itt != RESERVED_ITT) {
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hdr->itt = mtask->itt | (conn->id << ISCSI_CID_SHIFT) |
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hdr->itt = build_itt(mtask->itt, conn->id, session->age);
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(session->age << ISCSI_AGE_SHIFT);
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nop->cmdsn = cpu_to_be32(session->cmdsn);
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nop->cmdsn = cpu_to_be32(session->cmdsn);
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if (conn->c_stage == ISCSI_CONN_STARTED &&
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if (conn->c_stage == ISCSI_CONN_STARTED &&
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!(hdr->opcode & ISCSI_OP_IMMEDIATE))
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!(hdr->opcode & ISCSI_OP_IMMEDIATE))
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@ -1064,7 +1062,7 @@ static int iscsi_exec_abort_task(struct scsi_cmnd *sc,
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spin_lock_bh(&session->lock);
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spin_lock_bh(&session->lock);
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ctask->mtask = (struct iscsi_mgmt_task *)
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ctask->mtask = (struct iscsi_mgmt_task *)
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session->mgmt_cmds[(hdr->itt & ISCSI_ITT_MASK) -
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session->mgmt_cmds[get_itt(hdr->itt) -
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ISCSI_MGMT_ITT_OFFSET];
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ISCSI_MGMT_ITT_OFFSET];
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if (conn->tmabort_state == TMABORT_INITIAL) {
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if (conn->tmabort_state == TMABORT_INITIAL) {
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@ -40,6 +40,14 @@
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}
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}
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#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;}
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#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;}
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/* initiator tags; opaque for target */
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typedef uint32_t __bitwise__ itt_t;
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/* below makes sense only for initiator that created this tag */
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#define build_itt(itt, id, age) ((__force itt_t)\
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((itt) | ((id) << ISCSI_CID_SHIFT) | ((age) << ISCSI_AGE_SHIFT)))
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#define get_itt(itt) ((__force uint32_t)(itt_t)(itt) & ISCSI_ITT_MASK)
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#define RESERVED_ITT ((__force itt_t)0xffffffff)
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/*
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/*
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* iSCSI Template Message Header
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* iSCSI Template Message Header
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*/
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*/
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@ -50,7 +58,7 @@ struct iscsi_hdr {
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uint8_t hlength; /* AHSs total length */
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uint8_t hlength; /* AHSs total length */
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uint8_t dlength[3]; /* Data length */
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uint8_t dlength[3]; /* Data length */
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag, opaque for target */
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__be32 ttt; /* Target Task Tag */
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__be32 ttt; /* Target Task Tag */
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__be32 statsn;
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__be32 statsn;
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__be32 exp_statsn;
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__be32 exp_statsn;
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@ -111,7 +119,7 @@ struct iscsi_cmd {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag */
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__be32 data_length;
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__be32 data_length;
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__be32 cmdsn;
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__be32 cmdsn;
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__be32 exp_statsn;
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__be32 exp_statsn;
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@ -148,7 +156,7 @@ struct iscsi_cmd_rsp {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t rsvd[8];
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uint8_t rsvd[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag */
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__be32 rsvd1;
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__be32 rsvd1;
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__be32 statsn;
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__be32 statsn;
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__be32 exp_cmdsn;
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__be32 exp_cmdsn;
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@ -206,7 +214,7 @@ struct iscsi_nopout {
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uint8_t rsvd3;
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uint8_t rsvd3;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag */
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__be32 ttt; /* Target Transfer Tag */
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__be32 ttt; /* Target Transfer Tag */
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__be32 cmdsn;
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__be32 cmdsn;
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__be32 exp_statsn;
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__be32 exp_statsn;
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@ -221,7 +229,7 @@ struct iscsi_nopin {
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uint8_t rsvd3;
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uint8_t rsvd3;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag */
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__be32 ttt; /* Target Transfer Tag */
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__be32 ttt; /* Target Transfer Tag */
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__be32 statsn;
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__be32 statsn;
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__be32 exp_cmdsn;
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__be32 exp_cmdsn;
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@ -237,8 +245,8 @@ struct iscsi_tm {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag */
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__be32 rtt; /* Reference Task Tag */
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itt_t rtt; /* Reference Task Tag */
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__be32 cmdsn;
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__be32 cmdsn;
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__be32 exp_statsn;
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__be32 exp_statsn;
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__be32 refcmdsn;
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__be32 refcmdsn;
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@ -267,8 +275,8 @@ struct iscsi_tm_rsp {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t rsvd2[8];
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uint8_t rsvd2[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag */
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__be32 rtt; /* Reference Task Tag */
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itt_t rtt; /* Reference Task Tag */
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__be32 statsn;
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__be32 statsn;
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__be32 exp_cmdsn;
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__be32 exp_cmdsn;
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__be32 max_cmdsn;
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__be32 max_cmdsn;
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@ -293,7 +301,7 @@ struct iscsi_r2t_rsp {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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itt_t itt; /* Initiator Task Tag */
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__be32 ttt; /* Target Transfer Tag */
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__be32 ttt; /* Target Transfer Tag */
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__be32 statsn;
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__be32 statsn;
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__be32 exp_cmdsn;
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__be32 exp_cmdsn;
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@ -311,7 +319,7 @@ struct iscsi_data {
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uint8_t rsvd3;
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uint8_t rsvd3;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt;
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itt_t itt;
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__be32 ttt;
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__be32 ttt;
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__be32 rsvd4;
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__be32 rsvd4;
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__be32 exp_statsn;
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__be32 exp_statsn;
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@ -331,7 +339,7 @@ struct iscsi_data_rsp {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t lun[8];
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__be32 itt;
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itt_t itt;
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__be32 ttt;
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__be32 ttt;
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__be32 statsn;
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__be32 statsn;
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__be32 exp_cmdsn;
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__be32 exp_cmdsn;
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@ -355,7 +363,7 @@ struct iscsi_text {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t dlength[3];
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uint8_t rsvd4[8];
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uint8_t rsvd4[8];
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__be32 itt;
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itt_t itt;
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__be32 ttt;
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__be32 ttt;
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__be32 cmdsn;
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__be32 cmdsn;
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__be32 exp_statsn;
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__be32 exp_statsn;
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@ -373,7 +381,7 @@ struct iscsi_text_rsp {
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uint8_t hlength;
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uint8_t hlength;
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uint8_t dlength[3];
|
uint8_t dlength[3];
|
||||||
uint8_t rsvd4[8];
|
uint8_t rsvd4[8];
|
||||||
__be32 itt;
|
itt_t itt;
|
||||||
__be32 ttt;
|
__be32 ttt;
|
||||||
__be32 statsn;
|
__be32 statsn;
|
||||||
__be32 exp_cmdsn;
|
__be32 exp_cmdsn;
|
||||||
@ -392,7 +400,7 @@ struct iscsi_login {
|
|||||||
uint8_t dlength[3];
|
uint8_t dlength[3];
|
||||||
uint8_t isid[6]; /* Initiator Session ID */
|
uint8_t isid[6]; /* Initiator Session ID */
|
||||||
__be16 tsih; /* Target Session Handle */
|
__be16 tsih; /* Target Session Handle */
|
||||||
__be32 itt; /* Initiator Task Tag */
|
itt_t itt; /* Initiator Task Tag */
|
||||||
__be16 cid;
|
__be16 cid;
|
||||||
__be16 rsvd3;
|
__be16 rsvd3;
|
||||||
__be32 cmdsn;
|
__be32 cmdsn;
|
||||||
@ -421,7 +429,7 @@ struct iscsi_login_rsp {
|
|||||||
uint8_t dlength[3];
|
uint8_t dlength[3];
|
||||||
uint8_t isid[6]; /* Initiator Session ID */
|
uint8_t isid[6]; /* Initiator Session ID */
|
||||||
__be16 tsih; /* Target Session Handle */
|
__be16 tsih; /* Target Session Handle */
|
||||||
__be32 itt; /* Initiator Task Tag */
|
itt_t itt; /* Initiator Task Tag */
|
||||||
__be32 rsvd3;
|
__be32 rsvd3;
|
||||||
__be32 statsn;
|
__be32 statsn;
|
||||||
__be32 exp_cmdsn;
|
__be32 exp_cmdsn;
|
||||||
@ -478,7 +486,7 @@ struct iscsi_logout {
|
|||||||
uint8_t hlength;
|
uint8_t hlength;
|
||||||
uint8_t dlength[3];
|
uint8_t dlength[3];
|
||||||
uint8_t rsvd2[8];
|
uint8_t rsvd2[8];
|
||||||
__be32 itt; /* Initiator Task Tag */
|
itt_t itt; /* Initiator Task Tag */
|
||||||
__be16 cid;
|
__be16 cid;
|
||||||
uint8_t rsvd3[2];
|
uint8_t rsvd3[2];
|
||||||
__be32 cmdsn;
|
__be32 cmdsn;
|
||||||
@ -505,7 +513,7 @@ struct iscsi_logout_rsp {
|
|||||||
uint8_t hlength;
|
uint8_t hlength;
|
||||||
uint8_t dlength[3];
|
uint8_t dlength[3];
|
||||||
uint8_t rsvd3[8];
|
uint8_t rsvd3[8];
|
||||||
__be32 itt; /* Initiator Task Tag */
|
itt_t itt; /* Initiator Task Tag */
|
||||||
__be32 rsvd4;
|
__be32 rsvd4;
|
||||||
__be32 statsn;
|
__be32 statsn;
|
||||||
__be32 exp_cmdsn;
|
__be32 exp_cmdsn;
|
||||||
@ -528,7 +536,7 @@ struct iscsi_snack {
|
|||||||
uint8_t opcode;
|
uint8_t opcode;
|
||||||
uint8_t flags;
|
uint8_t flags;
|
||||||
uint8_t rsvd2[14];
|
uint8_t rsvd2[14];
|
||||||
__be32 itt;
|
itt_t itt;
|
||||||
__be32 begrun;
|
__be32 begrun;
|
||||||
__be32 runlength;
|
__be32 runlength;
|
||||||
__be32 exp_statsn;
|
__be32 exp_statsn;
|
||||||
|
Loading…
Reference in New Issue
Block a user