diff options
author | Yaroslav Brustinov <ybrustin@cisco.com> | 2016-02-23 08:35:10 -0500 |
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committer | Yaroslav Brustinov <ybrustin@cisco.com> | 2016-02-23 08:35:10 -0500 |
commit | 66bebea92f15db3ccf055814ab48cda24477fa9d (patch) | |
tree | eb53bc0137f4bca3beb9237fd37bd09ec4f240fa /src/stateless/cp/trex_stream_vm.cpp | |
parent | ee91690697d026c168de223f0b6b61c2e59e76ad (diff) | |
parent | 36cc1ecef32dcee3640e6ddf96422c07d89777b3 (diff) |
Merge remote-tracking branch 'origin/master'
Diffstat (limited to 'src/stateless/cp/trex_stream_vm.cpp')
-rw-r--r-- | src/stateless/cp/trex_stream_vm.cpp | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/stateless/cp/trex_stream_vm.cpp b/src/stateless/cp/trex_stream_vm.cpp index f83025dd..b0cadfb6 100644 --- a/src/stateless/cp/trex_stream_vm.cpp +++ b/src/stateless/cp/trex_stream_vm.cpp @@ -396,8 +396,6 @@ void StreamVm::build_program(){ if (ins_type == StreamVmInstruction::itFIX_IPV4_CS) { StreamVmInstructionFixChecksumIpv4 *lpFix =(StreamVmInstructionFixChecksumIpv4 *)inst; - add_field_cnt(lpFix->m_pkt_offset +12); - if ( (lpFix->m_pkt_offset + IPV4_HDR_LEN) > m_pkt_size ) { std::stringstream ss; @@ -405,6 +403,26 @@ void StreamVm::build_program(){ err(ss.str()); } + uint16_t offset_next_layer = IPV4_HDR_LEN; + + if ( m_pkt ){ + IPHeader * ipv4= (IPHeader *)(m_pkt+lpFix->m_pkt_offset); + offset_next_layer = ipv4->getSize(); + } + + if (offset_next_layer<IPV4_HDR_LEN) { + offset_next_layer=IPV4_HDR_LEN; + } + + if ( (lpFix->m_pkt_offset + offset_next_layer) > m_pkt_size ) { + + std::stringstream ss; + ss << "instruction id '" << ins_id << "' fix ipv4 command offset " << lpFix->m_pkt_offset << "plus "<<offset_next_layer<< " is too high relative to packet size "<< m_pkt_size; + err(ss.str()); + } + /* calculate this offset from the packet */ + add_field_cnt(lpFix->m_pkt_offset + offset_next_layer); + StreamDPOpIpv4Fix ipv_fix; ipv_fix.m_offset = lpFix->m_pkt_offset; ipv_fix.m_op = StreamDPVmInstructions::ditFIX_IPV4_CS; |