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IB/core: Add ability for drivers to report an alternate MAD size.

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Add max MAD size to the device immutable data set and have all drivers that
support MADs report the current IB MAD size (IB_MGMT_MAD_SIZE) to the core.

Verify MAD size data in both the MAD core and when reading the immutable data.

OPA drivers will report alternate MAD sizes in subsequent patches.

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Ira Weiny 2015-06-06 14:38:29 -04:00 committed by Doug Ledford
parent da2dfaa3a3
commit 337877a466
11 changed files with 43 additions and 0 deletions
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11
drivers/infiniband/core/device.c
View File

@ -211,6 +211,12 @@ static int add_client_context(struct ib_device *device, struct ib_client *client
return 0;
}
static int verify_immutable(const struct ib_device *dev, u8 port)
{
return WARN_ON(!rdma_cap_ib_mad(dev, port) &&
rdma_max_mad_size(dev, port) != 0);
}
static int read_port_immutable(struct ib_device *device)
{
int ret = -ENOMEM;
@ -236,6 +242,11 @@ static int read_port_immutable(struct ib_device *device)
&device->port_immutable[port]);
if (ret)
goto err;
if (verify_immutable(device, port)) {
ret = -EINVAL;
goto err;
}
}
ret = 0;

3
drivers/infiniband/core/mad.c
View File

@ -2939,6 +2939,9 @@ static int ib_mad_port_open(struct ib_device *device,
int has_smi;
struct ib_cq_init_attr cq_attr = {};
if (WARN_ON(rdma_max_mad_size(device, port_num) < IB_MGMT_MAD_SIZE))
return -EFAULT;
/* Create new device info */
port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL);
if (!port_priv) {

2
drivers/infiniband/hw/ehca/ehca_main.c
View File

@ -46,6 +46,7 @@
#include <linux/notifier.h>
#include <linux/memory.h>
#include <rdma/ib_mad.h>
#include "ehca_classes.h"
#include "ehca_iverbs.h"
#include "ehca_mrmw.h"
@ -444,6 +445,7 @@ static int ehca_port_immutable(struct ib_device *ibdev, u8 port_num,
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}

1
drivers/infiniband/hw/ipath/ipath_verbs.c
View File

@ -1996,6 +1996,7 @@ static int ipath_port_immutable(struct ib_device *ibdev, u8 port_num,
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}

2
drivers/infiniband/hw/mlx4/main.c
View File

@ -2189,6 +2189,8 @@ static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
else
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}

1
drivers/infiniband/hw/mlx5/main.c
View File

@ -1203,6 +1203,7 @@ static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}

1
drivers/infiniband/hw/mthca/mthca_provider.c
View File

@ -1264,6 +1264,7 @@ static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}

2
drivers/infiniband/hw/ocrdma/ocrdma_main.c
View File

@ -30,6 +30,7 @@
#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_mad.h>
#include <linux/netdevice.h>
#include <net/addrconf.h>
@ -215,6 +216,7 @@ static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}

1
drivers/infiniband/hw/qib/qib_verbs.c
View File

@ -2055,6 +2055,7 @@ static int qib_port_immutable(struct ib_device *ibdev, u8 port_num,
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}

1
include/rdma/ib_mad.h
View File

@ -135,6 +135,7 @@ enum {
IB_MGMT_SA_DATA = 200,
IB_MGMT_DEVICE_HDR = 64,
IB_MGMT_DEVICE_DATA = 192,
IB_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + IB_MGMT_MAD_DATA,
};
struct ib_mad_hdr {

18
include/rdma/ib_verbs.h
View File

@ -1534,6 +1534,7 @@ struct ib_port_immutable {
int pkey_tbl_len;
int gid_tbl_len;
u32 core_cap_flags;
u32 max_mad_size;
};
struct ib_device {
@ -2052,6 +2053,23 @@ static inline bool rdma_cap_read_multi_sge(struct ib_device *device,
return !(device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP);
}
/**
* rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
*
* @device: Device
* @port_num: Port number
*
* This MAD size includes the MAD headers and MAD payload. No other headers
* are included.
*
* Return the max MAD size required by the Port. Will return 0 if the port
* does not support MADs
*/
static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
{
return device->port_immutable[port_num].max_mad_size;
}
int ib_query_gid(struct ib_device *device,
u8 port_num, int index, union ib_gid *gid);