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smc_llc.h

smc_llc.h 1.4 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. /*
    3. 

  3.  *  Shared Memory Communications over RDMA (SMC-R) and RoCE
    4. 

  4.  *
    5. 

  5.  *  Definitions for LLC (link layer control) message handling
    6. 

  6.  *
    7. 

  7.  *  Copyright IBM Corp. 2016
    8. 

  8.  *
    9. 

  9.  *  Author(s):  Klaus Wacker <Klaus.Wacker@de.ibm.com>
    10. 

  10.  *              Ursula Braun <ubraun@linux.vnet.ibm.com>
    11. 

  11.  */
    12. 

  12. 

  13. #ifndef SMC_LLC_H
    14. 

  14. #define SMC_LLC_H
    15. 

  15. 

  16. #include "smc_wr.h"
    17. 

  17. 

  18. #define SMC_LLC_FLAG_RESP		0x80
    19. 

  19. 

  20. #define SMC_LLC_WAIT_FIRST_TIME		(5 * HZ)
    21. 

  21. #define SMC_LLC_WAIT_TIME		(2 * HZ)
    22. 

  22. 

  23. enum smc_llc_reqresp {
    24. 

  24. 	SMC_LLC_REQ,
    25. 

  25. 	SMC_LLC_RESP
    26. 

  26. };
    27. 

  27. 

  28. enum smc_llc_msg_type {
    29. 

  29. 	SMC_LLC_CONFIRM_LINK		= 0x01,
    30. 

  30. 	SMC_LLC_ADD_LINK		= 0x02,
    31. 

  31. 	SMC_LLC_DELETE_LINK		= 0x04,
    32. 

  32. 	SMC_LLC_CONFIRM_RKEY		= 0x06,
    33. 

  33. 	SMC_LLC_TEST_LINK		= 0x07,
    34. 

  34. 	SMC_LLC_CONFIRM_RKEY_CONT	= 0x08,
    35. 

  35. 	SMC_LLC_DELETE_RKEY		= 0x09,
    36. 

  36. };
    37. 

  37. 

  38. /* transmit */
    39. 

  39. int smc_llc_send_confirm_link(struct smc_link *lnk, u8 mac[], union ib_gid *gid,
    40. 

  40. 			      enum smc_llc_reqresp reqresp);
    41. 

  41. int smc_llc_send_add_link(struct smc_link *link, u8 mac[], union ib_gid *gid,
    42. 

  42. 			  enum smc_llc_reqresp reqresp);
    43. 

  43. int smc_llc_send_delete_link(struct smc_link *link,
    44. 

  44. 			     enum smc_llc_reqresp reqresp);
    45. 

  45. int smc_llc_link_init(struct smc_link *link);
    46. 

  46. void smc_llc_link_active(struct smc_link *link, int testlink_time);
    47. 

  47. void smc_llc_link_inactive(struct smc_link *link);
    48. 

  48. void smc_llc_link_clear(struct smc_link *link);
    49. 

  49. int smc_llc_do_confirm_rkey(struct smc_link *link,
    50. 

  50. 			    struct smc_buf_desc *rmb_desc);
    51. 

  51. int smc_llc_init(void) __init;
    52. 

  52. 

  53. #endif /* SMC_LLC_H */
    54.