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_verbs.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_verbs.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.c | 31 |
1 files changed, 5 insertions, 26 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index 9deafc3aa6af..9cfd440cebe1 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -222,25 +222,11 @@ static int rxe_dealloc_pd(struct ib_pd *ibpd) return 0; } -static int rxe_init_av(struct rxe_dev *rxe, struct rdma_ah_attr *attr, - struct rxe_av *av) +static void rxe_init_av(struct rxe_dev *rxe, struct rdma_ah_attr *attr, + struct rxe_av *av) { - int err; - union ib_gid sgid; - struct ib_gid_attr sgid_attr; - - err = ib_get_cached_gid(&rxe->ib_dev, rdma_ah_get_port_num(attr), - rdma_ah_read_grh(attr)->sgid_index, &sgid, - &sgid_attr); - if (err) { - pr_err("Failed to query sgid. err = %d\n", err); - return err; - } - rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr); - rxe_av_fill_ip_info(av, attr, &sgid_attr, &sgid); - dev_put(sgid_attr.ndev); - return 0; + rxe_av_fill_ip_info(av, attr); } static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, @@ -266,13 +252,9 @@ static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, rxe_add_ref(pd); ah->pd = pd; - err = rxe_init_av(rxe, attr, &ah->av); - if (err) - goto err2; - + rxe_init_av(rxe, attr, &ah->av); return &ah->ibah; -err2: rxe_drop_ref(pd); rxe_drop_ref(ah); err1: @@ -289,10 +271,7 @@ static int rxe_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr) if (err) return err; - err = rxe_init_av(rxe, attr, &ah->av); - if (err) - return err; - + rxe_init_av(rxe, attr, &ah->av); return 0; } |