5.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Mike Marciniszyn <[email protected]> commit 38bbc9f0381550d1d227fc57afa08436e36b32fc upstream. The IBTA spec notes: o9-5.2.1: For any HCA which supports SEND with Invalidate, upon receiving an IETH, the Invalidate operation must not take place until after the normal transport header validation checks have been successfully completed. The rdmavt loopback code does the validation after the invalidate. Fix by relocating the operation specific logic for all SEND variants until after the validity checks. Cc: <[email protected]> #v4.20+ Reviewed-by: Michael J. Ruhl <[email protected]> Signed-off-by: Mike Marciniszyn <[email protected]> Signed-off-by: Dennis Dalessandro <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/infiniband/sw/rdmavt/qp.c | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) --- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -2893,18 +2893,8 @@ again: goto send_comp; case IB_WR_SEND_WITH_INV: - if (!rvt_invalidate_rkey(qp, wqe->wr.ex.invalidate_rkey)) { - wc.wc_flags = IB_WC_WITH_INVALIDATE; - wc.ex.invalidate_rkey = wqe->wr.ex.invalidate_rkey; - } - goto send; - case IB_WR_SEND_WITH_IMM: - wc.wc_flags = IB_WC_WITH_IMM; - wc.ex.imm_data = wqe->wr.ex.imm_data; - /* FALLTHROUGH */ case IB_WR_SEND: -send: ret = rvt_get_rwqe(qp, false); if (ret < 0) goto op_err; @@ -2912,6 +2902,22 @@ send: goto rnr_nak; if (wqe->length > qp->r_len) goto inv_err; + switch (wqe->wr.opcode) { + case IB_WR_SEND_WITH_INV: + if (!rvt_invalidate_rkey(qp, + wqe->wr.ex.invalidate_rkey)) { + wc.wc_flags = IB_WC_WITH_INVALIDATE; + wc.ex.invalidate_rkey = + wqe->wr.ex.invalidate_rkey; + } + break; + case IB_WR_SEND_WITH_IMM: + wc.wc_flags = IB_WC_WITH_IMM; + wc.ex.imm_data = wqe->wr.ex.imm_data; + break; + default: + break; + } break; case IB_WR_RDMA_WRITE_WITH_IMM:
