From 16d14e01b7a100911804768b3ae4df083da2b53d Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Mon, 17 Dec 2018 13:20:33 -0800 Subject: include/scsi/srp.h: Add support for immediate data Add constants and data structures to support immediate data. These changes conform to SRP2r04. Cc: Sergey Gorenko Cc: Max Gurtovoy Cc: Laurence Oberman Signed-off-by: Bart Van Assche Signed-off-by: Doug Ledford --- include/scsi/srp.h | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'include/scsi') diff --git a/include/scsi/srp.h b/include/scsi/srp.h index 15cb8cf8a604..9220758d5087 100644 --- a/include/scsi/srp.h +++ b/include/scsi/srp.h @@ -67,7 +67,8 @@ enum { enum { SRP_NO_DATA_DESC = 0, SRP_DATA_DESC_DIRECT = 1, - SRP_DATA_DESC_INDIRECT = 2 + SRP_DATA_DESC_INDIRECT = 2, + SRP_DATA_DESC_IMM = 3, /* new in SRP2 */ }; enum { @@ -111,9 +112,16 @@ struct srp_indirect_buf { struct srp_direct_buf desc_list[0]; } __attribute__((packed)); +/* Immediate data buffer descriptor as defined in SRP2. */ +struct srp_imm_buf { + __be32 len; +}; + +/* srp_login_req.flags */ enum { SRP_MULTICHAN_SINGLE = 0, - SRP_MULTICHAN_MULTI = 1 + SRP_MULTICHAN_MULTI = 1, + SRP_IMMED_REQUESTED = 0x80, /* new in SRP2 */ }; struct srp_login_req { @@ -124,7 +132,9 @@ struct srp_login_req { u8 reserved2[4]; __be16 req_buf_fmt; u8 req_flags; - u8 reserved3[5]; + u8 reserved3[1]; + __be16 imm_data_offset; /* new in SRP2 */ + u8 reserved4[2]; u8 initiator_port_id[16]; u8 target_port_id[16]; }; @@ -144,6 +154,8 @@ struct srp_login_req_rdma { __be32 req_it_iu_len; u8 initiator_port_id[16]; u8 target_port_id[16]; + __be16 imm_data_offset; + u8 reserved[6]; }; /* srp_login_rsp.rsp_flags */ @@ -151,6 +163,7 @@ enum { SRP_LOGIN_RSP_MULTICHAN_NO_CHAN = 0x0, SRP_LOGIN_RSP_MULTICHAN_TERMINATED = 0x1, SRP_LOGIN_RSP_MULTICHAN_MAINTAINED = 0x2, + SRP_LOGIN_RSP_IMMED_SUPP = 0x80, /* new in SRP2 */ }; /* -- cgit v1.2.3-59-g8ed1b