staging/rdma/hfi1: Handle packets with invalid RHF on context 0
Context 0 (which handles the error packets) can potentially receive an invalid rhf. Hence, it can not depend on RHF sequence number and can only use DMA_RTAIL mechanism. Detect such packets with invalid rhf using rhf sequence counting mechanism and drop them. As DMA_RTAIL mechanism has performance penalties, do not use context 0 for performance critical verbs path. Use context 0 for VL15 (MAD), multicast and error packets. Reviewed-by: NArthur Kepner <arthur.kepner@intel.com> Reviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by: NDean Luick <dean.luick@intel.com> Reviewed-by: NMitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: NNiranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Signed-off-by: NMike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Showing
想要评论请 注册 或 登录