iser.h 2.3 KB

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  1. /*
  2. * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
  3. *
  4. * This software is available to you under a choice of one of two
  5. * licenses. You may choose to be licensed under the terms of the GNU
  6. * General Public License (GPL) Version 2, available from the file
  7. * COPYING in the main directory of this source tree, or the
  8. * OpenIB.org BSD license below:
  9. *
  10. * Redistribution and use in source and binary forms, with or
  11. * without modification, are permitted provided that the following
  12. * conditions are met:
  13. *
  14. * - Redistributions of source code must retain the above
  15. * copyright notice, this list of conditions and the following
  16. * disclaimer.
  17. *
  18. * - Redistributions in binary form must reproduce the above
  19. * copyright notice, this list of conditions and the following
  20. * disclaimer in the documentation and/or other materials
  21. * provided with the distribution.
  22. *
  23. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26. * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27. * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28. * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29. * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30. * SOFTWARE.
  31. */
  32. #ifndef ISCSI_ISER_H
  33. #define ISCSI_ISER_H
  34. #define ISER_ZBVA_NOT_SUP 0x80
  35. #define ISER_SEND_W_INV_NOT_SUP 0x40
  36. #define ISERT_ZBVA_NOT_USED 0x80
  37. #define ISERT_SEND_W_INV_NOT_USED 0x40
  38. #define ISCSI_CTRL 0x10
  39. #define ISER_HELLO 0x20
  40. #define ISER_HELLORPLY 0x30
  41. #define ISER_VER 0x10
  42. #define ISER_WSV 0x08
  43. #define ISER_RSV 0x04
  44. /**
  45. * struct iser_cm_hdr - iSER CM header (from iSER Annex A12)
  46. *
  47. * @flags: flags support (zbva, send_w_inv)
  48. * @rsvd: reserved
  49. */
  50. struct iser_cm_hdr {
  51. u8 flags;
  52. u8 rsvd[3];
  53. } __packed;
  54. /**
  55. * struct iser_ctrl - iSER header of iSCSI control PDU
  56. *
  57. * @flags: opcode and read/write valid bits
  58. * @rsvd: reserved
  59. * @write_stag: write rkey
  60. * @write_va: write virtual address
  61. * @reaf_stag: read rkey
  62. * @read_va: read virtual address
  63. */
  64. struct iser_ctrl {
  65. u8 flags;
  66. u8 rsvd[3];
  67. __be32 write_stag;
  68. __be64 write_va;
  69. __be32 read_stag;
  70. __be64 read_va;
  71. } __packed;
  72. #endif /* ISCSI_ISER_H */