summaryrefslogtreecommitdiff
path: root/include/scsi/srp.h
diff options
context:
space:
mode:
authorBart Van Assche <bart.vanassche@wdc.com>2018-01-23 01:27:12 +0300
committerDoug Ledford <dledford@redhat.com>2018-01-23 19:35:04 +0300
commit19f313438c7754e6cc2bceddeebeaa5132e2e0a1 (patch)
tree3295d9bd2a0dd1b71ae2ea52278b8e146a26b7e3 /include/scsi/srp.h
parent172856eac7cfaaeabad6a282d3c79d687ad69fc0 (diff)
downloadlinux-19f313438c7754e6cc2bceddeebeaa5132e2e0a1.tar.xz
IB/srp: Add RDMA/CM support
Since the SRP_LOGIN_REQ defined in the SRP standard is larger than what fits in the RDMA/CM login request private data, introduce a new login request format for the RDMA/CM. Note: since srp_daemon and ibsrpdm rely on the subnet manager and since there is no equivalent of the IB subnet manager in non-IB networks, login has to be performed manually for non-IB networks. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/scsi/srp.h')
-rw-r--r--include/scsi/srp.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/scsi/srp.h b/include/scsi/srp.h
index 5be834de491a..c16a3c9a4d9b 100644
--- a/include/scsi/srp.h
+++ b/include/scsi/srp.h
@@ -129,6 +129,23 @@ struct srp_login_req {
u8 target_port_id[16];
};
+/**
+ * struct srp_login_req_rdma - RDMA/CM login parameters.
+ *
+ * RDMA/CM over InfiniBand can only carry 92 - 36 = 56 bytes of private
+ * data. The %srp_login_req_rdma structure contains the same information as
+ * %srp_login_req but with the reserved data removed.
+ */
+struct srp_login_req_rdma {
+ u64 tag;
+ __be16 req_buf_fmt;
+ u8 req_flags;
+ u8 opcode;
+ __be32 req_it_iu_len;
+ u8 initiator_port_id[16];
+ u8 target_port_id[16];
+};
+
/*
* The SRP spec defines the size of the LOGIN_RSP structure to be 52
* bytes, so it needs to be packed to avoid having it padded to 56