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authorMax Gurtovoy <maxg@mellanox.com>2018-05-31 11:05:24 +0300
committerJason Gunthorpe <jgg@mellanox.com>2018-06-04 09:19:24 -0600
commitca24da008fd665db125aed889e857ccaa033de84 (patch)
treeb983d5c8e7f1991a78332ecf991b6b6c0de6b2aa /include
parent0e12af84cdd3056460f928adc164f9e87f4b303b (diff)
downloadlinux-0-day-ca24da008fd665db125aed889e857ccaa033de84.tar.gz
linux-0-day-ca24da008fd665db125aed889e857ccaa033de84.tar.xz
RDMA/core: introduce check masks for T10-PI offload
T10-PI offload capability is currently supported in iSER protocol only, and the definition of the HCA protection information checks are missing from the core layer. Add those definition to avoid code duplication in other drivers (such iSER target and NVMeoF). Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include')
-rw-r--r--include/rdma/ib_verbs.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 2cc04abb6df8d..2043e1a8f851a 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -861,6 +861,19 @@ enum ib_sig_err_type {
};
/**
+ * Signature check masks (8 bytes in total) according to the T10-PI standard:
+ * -------- -------- ------------
+ * | GUARD | APPTAG | REFTAG |
+ * | 2B | 2B | 4B |
+ * -------- -------- ------------
+ */
+enum {
+ IB_SIG_CHECK_GUARD = 0xc0,
+ IB_SIG_CHECK_APPTAG = 0x30,
+ IB_SIG_CHECK_REFTAG = 0x0f,
+};
+
+/**
* struct ib_sig_err - signature error descriptor
*/
struct ib_sig_err {