Commit 2ef907b8 authored by Dean Luick's avatar Dean Luick Committed by Doug Ledford
Browse files

staging/rdma/hfi1: Fix snoop packet length calculation



The LRH has a 12 bit packet length field, not 11 bit. This caused a
snoop packet length miscalculation leading to a crash when sending a
large ping over IPoIB while running opapacketcapture.
Reviewed-by: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: default avatarDean Luick <dean.luick@intel.com>
Signed-off-by: default avatarJubin John <jubin.john@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent cfe3e656
......@@ -5,7 +5,7 @@
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2015 Intel Corporation.
* Copyright(c) 2015, 2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
......@@ -18,7 +18,7 @@
*
* BSD LICENSE
*
* Copyright(c) 2015 Intel Corporation.
* Copyright(c) 2015, 2016 Intel Corporation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
......@@ -85,10 +85,9 @@ static u8 snoop_flags;
/*
* Extract packet length from LRH header.
* Why & 0x7FF? Because len is only 11 bits in case it wasn't 0'd we throw the
* bogus bits away. This is in Dwords so multiply by 4 to get size in bytes
* This is in Dwords so multiply by 4 to get size in bytes
*/
#define HFI1_GET_PKT_LEN(x) (((be16_to_cpu((x)->lrh[2]) & 0x7FF)) << 2)
#define HFI1_GET_PKT_LEN(x) (((be16_to_cpu((x)->lrh[2]) & 0xFFF)) << 2)
enum hfi1_filter_status {
HFI1_FILTER_HIT,
......
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