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IB/mlx5: Add additional checks before processing MADs

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Check the has_smi bit in vport context and class version of MADs
before allowing MADs processing to take place.
MAD_IFC SMI commands can be executed only if smi bit is set.

Fixes: e126ba97db ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Parvi Kaustubhi <parvik@mellanox.com>
Reviewed-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Maor Gottlieb 2017-01-18 14:10:33 +02:00 • committed by Doug Ledford
parent 45bded2c21
commit c43f1112c0
3 changed files with 46 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

12
drivers/infiniband/hw/mlx5/mad.c
View file

@ -42,12 +42,24 @@ enum {
MLX5_IB_VENDOR_CLASS2 = 0xa MLX5_IB_VENDOR_CLASS2 = 0xa
}; };
static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u8 port_num,
struct ib_mad *in_mad)
{
if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
return true;
return dev->mdev->port_caps[port_num - 1].has_smi;
}
int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey, int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh, u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
const void *in_mad, void *response_mad) const void *in_mad, void *response_mad)
{ {
u8 op_modifier = 0; u8 op_modifier = 0;
if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
return -EPERM;
/* Key check traps can't be generated unless we have in_wc to /* Key check traps can't be generated unless we have in_wc to
* tell us where to send the trap. * tell us where to send the trap.
*/ */

33
drivers/infiniband/hw/mlx5/main.c
View file

@ -2533,6 +2533,35 @@ static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
ibdev->ib_active = false; ibdev->ib_active = false;
} }
static int set_has_smi_cap(struct mlx5_ib_dev *dev)
{
struct mlx5_hca_vport_context vport_ctx;
int err;
int port;
for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) {
dev->mdev->port_caps[port - 1].has_smi = false;
if (MLX5_CAP_GEN(dev->mdev, port_type) ==
MLX5_CAP_PORT_TYPE_IB) {
if (MLX5_CAP_GEN(dev->mdev, ib_virt)) {
err = mlx5_query_hca_vport_context(dev->mdev, 0,
port, 0,
&vport_ctx);
if (err) {
mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n",
port, err);
return err;
}
dev->mdev->port_caps[port - 1].has_smi =
vport_ctx.has_smi;
} else {
dev->mdev->port_caps[port - 1].has_smi = true;
}
}
}
return 0;
}
static void get_ext_port_caps(struct mlx5_ib_dev *dev) static void get_ext_port_caps(struct mlx5_ib_dev *dev)
{ {
int port; int port;
@ -2557,6 +2586,10 @@ static int get_port_caps(struct mlx5_ib_dev *dev)
if (!dprops) if (!dprops)
goto out; goto out;
err = set_has_smi_cap(dev);
if (err)
goto out;
err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw); err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
if (err) { if (err) {
mlx5_ib_warn(dev, "query_device failed %d\n", err); mlx5_ib_warn(dev, "query_device failed %d\n", err);

1
include/linux/mlx5/driver.h
View file

@ -289,6 +289,7 @@ struct mlx5_port_caps {
int gid_table_len; int gid_table_len;
int pkey_table_len; int pkey_table_len;
u8 ext_port_cap; u8 ext_port_cap;
bool has_smi;
}; };
struct mlx5_cmd_mailbox { struct mlx5_cmd_mailbox {