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IB/mlx4: Use GID attribute from ah attribute

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While converting GID index from attribute to that of the HCA, GID
attribute is available from the ah_attr. Make use of GID attribute
to simplify the code and also avoid avoid GID query.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Parav Pandit 2018-06-13 10:22:07 +03:00 committed by Jason Gunthorpe
parent 47ec386662
commit 7492052a18
4 changed files with 9 additions and 20 deletions
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4
drivers/infiniband/hw/mlx4/ah.c
View File

@ -105,9 +105,7 @@ static struct ib_ah *create_iboe_ah(struct ib_pd *pd,
vlan_tag |= (rdma_ah_get_sl(ah_attr) & 7) << 13;
ah->av.eth.port_pd = cpu_to_be32(to_mpd(pd)->pdn |
(rdma_ah_get_port_num(ah_attr) << 24));
ret = mlx4_ib_gid_index_to_real_index(ibdev,
rdma_ah_get_port_num(ah_attr),
grh->sgid_index);
ret = mlx4_ib_gid_index_to_real_index(ibdev, gid_attr);
if (ret < 0)
return ERR_PTR(ret);
ah->av.eth.gid_index = ret;

20
drivers/infiniband/hw/mlx4/main.c
View File

@ -380,17 +380,15 @@ static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
}
int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
u8 port_num, int index)
const struct ib_gid_attr *attr)
{
struct mlx4_ib_iboe *iboe = &ibdev->iboe;
struct gid_cache_context *ctx = NULL;
union ib_gid gid;
struct mlx4_port_gid_table *port_gid_table;
int real_index = -EINVAL;
int i;
int ret;
unsigned long flags;
struct ib_gid_attr attr;
u8 port_num = attr->port_num;
if (port_num > MLX4_MAX_PORTS)
return -EINVAL;
@ -399,21 +397,15 @@ int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
port_num = 1;
if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
return index;
ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
if (ret)
return ret;
if (attr.ndev)
dev_put(attr.ndev);
return attr->index;
spin_lock_irqsave(&iboe->lock, flags);
port_gid_table = &iboe->gids[port_num - 1];
for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
attr.gid_type == port_gid_table->gids[i].gid_type) {
if (!memcmp(&port_gid_table->gids[i].gid,
&attr->gid, sizeof(attr->gid)) &&
attr->gid_type == port_gid_table->gids[i].gid_type) {
ctx = port_gid_table->gids[i].ctx;
break;
}

2
drivers/infiniband/hw/mlx4/mlx4_ib.h
View File

@ -900,7 +900,7 @@ int mlx4_ib_rereg_user_mr(struct ib_mr *mr, int flags,
int mr_access_flags, struct ib_pd *pd,
struct ib_udata *udata);
int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
u8 port_num, int index);
const struct ib_gid_attr *attr);
void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
int port);

3
drivers/infiniband/hw/mlx4/qp.c
View File

@ -1859,8 +1859,7 @@ static int _mlx4_set_path(struct mlx4_ib_dev *dev,
if (rdma_ah_get_ah_flags(ah) & IB_AH_GRH) {
const struct ib_global_route *grh = rdma_ah_read_grh(ah);
int real_sgid_index =
mlx4_ib_gid_index_to_real_index(dev, port,
grh->sgid_index);
mlx4_ib_gid_index_to_real_index(dev, grh->sgid_attr);
if (real_sgid_index < 0)
return real_sgid_index;