From 9eacee2ac624bfa9740d49355dbe6ee88d0cba0a Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 12 Jan 2006 15:55:41 -0800 Subject: [PATCH] IB/mthca: Initialize grh_present before using it build_mlx_header() was using sqp->ud_header.grh_present before it was initialized by mthca_read_ah(). Furthermore, header->grh_present is set by ib_ud_header_init, so there's no need to set it again in mthca_read_ah(). Signed-off-by: Michael S. Tsirkin Signed-off-by: Roland Dreier --- drivers/infiniband/hw/mthca/mthca_av.c | 10 ++++++---- drivers/infiniband/hw/mthca/mthca_dev.h | 1 + drivers/infiniband/hw/mthca/mthca_qp.c | 2 +- 3 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/hw/mthca/mthca_av.c b/drivers/infiniband/hw/mthca/mthca_av.c index 22fdc446f25c..a14eed08a0fc 100644 --- a/drivers/infiniband/hw/mthca/mthca_av.c +++ b/drivers/infiniband/hw/mthca/mthca_av.c @@ -163,6 +163,11 @@ int mthca_destroy_ah(struct mthca_dev *dev, struct mthca_ah *ah) return 0; } +int mthca_ah_grh_present(struct mthca_ah *ah) +{ + return !!(ah->av->g_slid & 0x80); +} + int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah, struct ib_ud_header *header) { @@ -172,8 +177,7 @@ int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah, header->lrh.service_level = be32_to_cpu(ah->av->sl_tclass_flowlabel) >> 28; header->lrh.destination_lid = ah->av->dlid; header->lrh.source_lid = cpu_to_be16(ah->av->g_slid & 0x7f); - if (ah->av->g_slid & 0x80) { - header->grh_present = 1; + if (mthca_ah_grh_present(ah)) { header->grh.traffic_class = (be32_to_cpu(ah->av->sl_tclass_flowlabel) >> 20) & 0xff; header->grh.flow_label = @@ -184,8 +188,6 @@ int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah, &header->grh.source_gid); memcpy(header->grh.destination_gid.raw, ah->av->dgid, 16); - } else { - header->grh_present = 0; } return 0; diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h index 795b379260bf..a104ab041ea3 100644 --- a/drivers/infiniband/hw/mthca/mthca_dev.h +++ b/drivers/infiniband/hw/mthca/mthca_dev.h @@ -520,6 +520,7 @@ int mthca_create_ah(struct mthca_dev *dev, int mthca_destroy_ah(struct mthca_dev *dev, struct mthca_ah *ah); int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah, struct ib_ud_header *header); +int mthca_ah_grh_present(struct mthca_ah *ah); int mthca_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); int mthca_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c index 564b6d51c394..fba608ed7df2 100644 --- a/drivers/infiniband/hw/mthca/mthca_qp.c +++ b/drivers/infiniband/hw/mthca/mthca_qp.c @@ -1434,7 +1434,7 @@ static int build_mlx_header(struct mthca_dev *dev, struct mthca_sqp *sqp, u16 pkey; ib_ud_header_init(256, /* assume a MAD */ - sqp->ud_header.grh_present, + mthca_ah_grh_present(to_mah(wr->wr.ud.ah)), &sqp->ud_header); err = mthca_read_ah(dev, to_mah(wr->wr.ud.ah), &sqp->ud_header);