RDMA/rxe: Fill in wc byte_len with IB_WC_RECV_RDMA_WITH_IMM (bdce1290) · Commits · 戴 / test

Calculate the correct byte_len on the receiving side when a work completion is generated with IB_WC_RECV_RDMA_WITH_IMM opcode. According to the IBA byte_len must indicate the number of written bytes, whereas it was always equal to zero for the IB_WC_RECV_RDMA_WITH_IMM opcode, even though data was transferred. Fixes: ("Soft RoCE driver") Signed-off-by:

Konstantin Taranov <konstantin.taranov@inf.ethz.ch> Signed-off-by:

Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/sw/rxe/rxe_resp.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -431,6 +431,7 @@ static enum resp_states check_rkey(struct rxe_qp *qp,
		qp->resp.va = reth_va(pkt);
		qp->resp.rkey = reth_rkey(pkt);
		qp->resp.resid = reth_len(pkt);
		qp->resp.length = reth_len(pkt);
		}
		access = (pkt->mask & RXE_READ_MASK) ? IB_ACCESS_REMOTE_READ
		: IB_ACCESS_REMOTE_WRITE;
		@@ -856,7 +857,9 @@ static enum resp_states do_complete(struct rxe_qp *qp,
		pkt->mask & RXE_WRITE_MASK) ?
		IB_WC_RECV_RDMA_WITH_IMM : IB_WC_RECV;
		wc->vendor_err = 0;
		wc->byte_len = wqe->dma.length - wqe->dma.resid;
		wc->byte_len = (pkt->mask & RXE_IMMDT_MASK &&
		pkt->mask & RXE_WRITE_MASK) ?
		qp->resp.length : wqe->dma.length - wqe->dma.resid;

		/* fields after byte_len are different between kernel and user
		* space

drivers/infiniband/sw/rxe/rxe_verbs.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -213,6 +213,7 @@ struct rxe_resp_info {
		struct rxe_mem *mr;
		u32 resid;
		u32 rkey;
		u32 length;
		u64 atomic_orig;

		/* SRQ only */

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