diff --git a/lustre/include/lustre/lustre_idl.h b/lustre/include/lustre/lustre_idl.h
index f95047de48a01a444b724f02a4b3dde583864874..f314110747c71120985ce52a45f3876004b60c74 100644
--- a/lustre/include/lustre/lustre_idl.h
+++ b/lustre/include/lustre/lustre_idl.h
@@ -549,6 +549,7 @@ extern void lustre_swab_ptlrpc_body(struct ptlrpc_body *pb);
 #define OBD_CONNECT_LRU_RESIZE 0x02000000ULL /* Lru resize feature. */
 #define OBD_CONNECT_MDS_MDS    0x04000000ULL /* MDS-MDS connection*/
 #define OBD_CONNECT_REAL       0x08000000ULL /* real connection */
+#define OBD_CONNECT_CKSUM      0x20000000ULL /* support several cksum algos */
 
 /* also update obd_connect_names[] for lprocfs_rd_connect_flags()
  * and lustre/utils/wirecheck.c */
diff --git a/lustre/obdclass/lprocfs_status.c b/lustre/obdclass/lprocfs_status.c
index 01ac77bf5c783581ace303aae55b8e0dc77f36de..f4b685ea18f9540c3c51aaba8947f03262b52acc 100644
--- a/lustre/obdclass/lprocfs_status.c
+++ b/lustre/obdclass/lprocfs_status.c
@@ -602,6 +602,8 @@ static const char *obd_connect_names[] = {
         "lru_resize",
         "mds_mds_connection",
         "real_conn",
+        "change_qunit_size",
+        "alt_checksum_algorithm",
         NULL
 };
 
diff --git a/lustre/ptlrpc/wiretest.c b/lustre/ptlrpc/wiretest.c
index 2876a170587104d8ff19941e0c59abbe36e884f5..fa5074b5f95b44f283221acf187be219b38268f0 100644
--- a/lustre/ptlrpc/wiretest.c
+++ b/lustre/ptlrpc/wiretest.c
@@ -472,6 +472,7 @@ void lustre_assert_wire_constants(void)
         CLASSERT(OBD_CONNECT_LRU_RESIZE == 0x02000000ULL);
         CLASSERT(OBD_CONNECT_MDS_MDS == 0x04000000ULL);
         CLASSERT(OBD_CONNECT_REAL == 0x08000000ULL);
+        CLASSERT(OBD_CONNECT_CKSUM == 0x20000000ULL);
 
         /* Checks for struct obdo */
         LASSERTF((int)sizeof(struct obdo) == 208, " found %lld\n",
diff --git a/lustre/utils/wirecheck.c b/lustre/utils/wirecheck.c
index 5cd12e3782e8f91b1fdfd2b54b7847cca2c604e1..c7ceb3ffc1ba07e2efbe7ef0d184e21329ee3c18 100644
--- a/lustre/utils/wirecheck.c
+++ b/lustre/utils/wirecheck.c
@@ -187,6 +187,7 @@ static void check_obd_connect_data(void)
         CHECK_CDEFINE(OBD_CONNECT_ACL);
         CHECK_CDEFINE(OBD_CONNECT_XATTR);
         CHECK_CDEFINE(OBD_CONNECT_REAL);
+        CHECK_CDEFINE(OBD_CONNECT_CKSUM);
         CHECK_CDEFINE(OBD_CONNECT_TRUNCLOCK);
         CHECK_CDEFINE(OBD_CONNECT_IBITS);
         CHECK_CDEFINE(OBD_CONNECT_JOIN);
diff --git a/lustre/utils/wiretest.c b/lustre/utils/wiretest.c
index 85257f0996c176815e05639af02180e527fea7fa..4360b19c908d0e86c269abd113f3ed62dffbe19c 100644
--- a/lustre/utils/wiretest.c
+++ b/lustre/utils/wiretest.c
@@ -488,6 +488,7 @@ void lustre_assert_wire_constants(void)
         CLASSERT(OBD_CONNECT_LRU_RESIZE == 0x02000000ULL);
         CLASSERT(OBD_CONNECT_MDS_MDS == 0x04000000ULL);
         CLASSERT(OBD_CONNECT_REAL == 0x08000000ULL);
+        CLASSERT(OBD_CONNECT_CKSUM == 0x20000000ULL);
 
         /* Checks for struct obdo */
         LASSERTF((int)sizeof(struct obdo) == 208, " found %lld\n",