diff options
| author | Konstantin Taranov <konstantin.taranov@inf.ethz.ch> | 2019-06-27 16:06:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-31 07:28:54 +0200 |
| commit | 3e06df155a6aa87f4386edebcf748dd8e9379d89 (patch) | |
| tree | c48e7e89bfcbf5c9838a1f50ce52760f40f7c351 | |
| parent | 57e936e34015e6d6652da71338fbf2d4c62bb2f9 (diff) | |
RDMA/rxe: Fill in wc byte_len with IB_WC_RECV_RDMA_WITH_IMM
[ Upstream commit bdce1290493caa3f8119f24b5dacc3fb7ca27389 ]
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: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Konstantin Taranov <konstantin.taranov@inf.ethz.ch>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_resp.c | 5 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.h | 1 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c index 74328561bee2..9207682b7a2e 100644 --- a/drivers/infiniband/sw/rxe/rxe_resp.c +++ b/drivers/infiniband/sw/rxe/rxe_resp.c @@ -435,6 +435,7 @@ 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; @@ -860,7 +861,9 @@ 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 diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h index 59f6a24db064..b2b76a316eba 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -214,6 +214,7 @@ struct rxe_resp_info { struct rxe_mem *mr; u32 resid; u32 rkey; + u32 length; u64 atomic_orig; /* SRQ only */ |