From 47ec38666210485de860ab24675acb3d2e7d4954 Mon Sep 17 00:00:00 2001 From: Parav Pandit Date: Wed, 13 Jun 2018 10:22:06 +0300 Subject: RDMA: Convert drivers to use sgid_attr instead of sgid_index The core code now ensures that all driver callbacks that receive an rdma_ah_attrs will have a sgid_attr's pointer if there is a GRH present. Drivers can use this pointer instead of calling a query function with sgid_index. This simplifies the drivers and also avoids races where a gid_index lookup may return different data if it is changed. Signed-off-by: Parav Pandit Signed-off-by: Jason Gunthorpe Signed-off-by: Leon Romanovsky --- drivers/infiniband/sw/rxe/rxe_qp.c | 23 ++--------------------- 1 file changed, 2 insertions(+), 21 deletions(-) (limited to 'drivers/infiniband/sw/rxe/rxe_qp.c') diff --git a/drivers/infiniband/sw/rxe/rxe_qp.c b/drivers/infiniband/sw/rxe/rxe_qp.c index b9f7aa1114b2..9f83fc982f31 100644 --- a/drivers/infiniband/sw/rxe/rxe_qp.c +++ b/drivers/infiniband/sw/rxe/rxe_qp.c @@ -580,9 +580,6 @@ int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask, struct ib_udata *udata) { int err; - struct rxe_dev *rxe = to_rdev(qp->ibqp.device); - union ib_gid sgid; - struct ib_gid_attr sgid_attr; if (mask & IB_QP_MAX_QP_RD_ATOMIC) { int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic); @@ -623,30 +620,14 @@ int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask, qp->attr.qkey = attr->qkey; if (mask & IB_QP_AV) { - ib_get_cached_gid(&rxe->ib_dev, 1, - rdma_ah_read_grh(&attr->ah_attr)->sgid_index, - &sgid, &sgid_attr); rxe_av_from_attr(attr->port_num, &qp->pri_av, &attr->ah_attr); - rxe_av_fill_ip_info(&qp->pri_av, &attr->ah_attr, - &sgid_attr, &sgid); - if (sgid_attr.ndev) - dev_put(sgid_attr.ndev); + rxe_av_fill_ip_info(&qp->pri_av, &attr->ah_attr); } if (mask & IB_QP_ALT_PATH) { - u8 sgid_index = - rdma_ah_read_grh(&attr->alt_ah_attr)->sgid_index; - - ib_get_cached_gid(&rxe->ib_dev, 1, sgid_index, - &sgid, &sgid_attr); - rxe_av_from_attr(attr->alt_port_num, &qp->alt_av, &attr->alt_ah_attr); - rxe_av_fill_ip_info(&qp->alt_av, &attr->alt_ah_attr, - &sgid_attr, &sgid); - if (sgid_attr.ndev) - dev_put(sgid_attr.ndev); - + rxe_av_fill_ip_info(&qp->alt_av, &attr->alt_ah_attr); qp->attr.alt_port_num = attr->alt_port_num; qp->attr.alt_pkey_index = attr->alt_pkey_index; qp->attr.alt_timeout = attr->alt_timeout; -- cgit v1.2.3-59-g8ed1b