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authorDon Hiatt <don.hiatt@intel.com>2017-03-21 03:26:20 +0300
committerDoug Ledford <dledford@redhat.com>2017-04-05 21:45:09 +0300
commit243d9f436f89f95c304011bd32485afc27581986 (patch)
treea0af9e0d577dc57a3d567758e346b9523c6f724c /include/rdma
parent0181ce31b26021f7c2f9506112a05c847a36f0f2 (diff)
downloadlinux-243d9f436f89f95c304011bd32485afc27581986.tar.xz
IB/hfi1: Add transmit fault injection feature
Add ability to fault packets on transmit by opcode. Dropping by packet can be achieved by setting the mask to 0. In order to drop non-verbs traffic we set PbcInsertHrc to NONE (0x2). The packet will still be delivered to the receiving node but a KHdrHCRCErr (KDETH packet with a bad HCRC) will be triggered and the packet will not be delivered to the correct context. In order to drop regular verbs traffic we set the PbcTestEbp flag. The packet will still be delivered to the receiving node but a 'late ebp error' will be triggered and will be dropped. A global toggle (/sys/kernel/debug/hfi1/hfi1_X/fault_suppress_err) has been added to suppress the error messages on the receive node when a packet was faulted on the sending node. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Don Hiatt <don.hiatt@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/ib_pack.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/rdma/ib_pack.h b/include/rdma/ib_pack.h
index b13419ce99ff..36655899ee02 100644
--- a/include/rdma/ib_pack.h
+++ b/include/rdma/ib_pack.h
@@ -80,6 +80,8 @@ enum {
IB_OPCODE_UD = 0x60,
/* per IBTA 1.3 vol 1 Table 38, A10.3.2 */
IB_OPCODE_CNP = 0x80,
+ /* Manufacturer specific */
+ IB_OPCODE_MSP = 0xe0,
/* operations -- just used to define real constants */
IB_OPCODE_SEND_FIRST = 0x00,