diff options
| author |   Parav Pandit <parav@mellanox.com> | 2018-06-13 10:22:06 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-06-18 11:11:26 -0600 |
| commit | 47ec38666210485de860ab24675acb3d2e7d4954 (patch) | |
| tree | f719738795a1658e13e25dedc5cf44743fbd907b /drivers/infiniband/sw/rxe/rxe_qp.c | |
| parent | IB{cm, core}: Introduce and use ah_attr copy, move, replace APIs (diff) | |
| download | linux-dev-47ec38666210485de860ab24675acb3d2e7d4954.tar.xz linux-dev-47ec38666210485de860ab24675acb3d2e7d4954.zip | |
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 <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe_qp.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_qp.c | 23 |
1 files changed, 2 insertions, 21 deletions
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; |