[IB] Fix RMPP receive length calculation
Based on simplification idea from Sean Hefty <sean.hefty@intel.com> Signed-off-by: Hal Rosenstock <halr@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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@ -412,8 +412,8 @@ static inline int get_mad_len(struct mad_rmpp_recv *rmpp_recv)
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hdr_size = data_offset(rmpp_mad->mad_hdr.mgmt_class);
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data_size = sizeof(struct ib_rmpp_mad) - hdr_size;
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pad = data_size - be32_to_cpu(rmpp_mad->rmpp_hdr.paylen_newwin);
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if (pad > data_size || pad < 0)
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pad = IB_MGMT_RMPP_DATA - be32_to_cpu(rmpp_mad->rmpp_hdr.paylen_newwin);
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if (pad > IB_MGMT_RMPP_DATA || pad < 0)
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pad = 0;
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return hdr_size + rmpp_recv->seg_num * data_size - pad;
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