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RDMA/nldev: helper functions to add driver attributes 

These help rdma drivers to fill out the driver entries.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Steve Wise 2018-05-03 08:41:42 -07:00 committed by Doug Ledford
parent da5c850782
commit 73937e8a03
2 changed files with 77 additions and 0 deletions
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66
drivers/infiniband/core/nldev.c
View File

@ -109,6 +109,72 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_DRIVER_U64] = { .type = NLA_U64 },
};
static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
enum rdma_nldev_print_type print_type)
{
if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, name))
return -EMSGSIZE;
if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC &&
nla_put_u8(msg, RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE, print_type))
return -EMSGSIZE;
return 0;
}
static int _rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name,
enum rdma_nldev_print_type print_type,
u32 value)
{
if (put_driver_name_print_type(msg, name, print_type))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DRIVER_U32, value))
return -EMSGSIZE;
return 0;
}
static int _rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name,
enum rdma_nldev_print_type print_type,
u64 value)
{
if (put_driver_name_print_type(msg, name, print_type))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_DRIVER_U64, value,
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
return 0;
}
int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value)
{
return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u32);
int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name,
u32 value)
{
return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex);
int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value)
{
return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u64);
int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value)
{
return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex);
static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
{
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index))

11
include/rdma/restrack.h
View File

@ -12,6 +12,7 @@
#include <linux/kref.h>
#include <linux/completion.h>
#include <linux/sched/task.h>
#include <uapi/rdma/rdma_netlink.h>
/**
* enum rdma_restrack_type - HW objects to track
@ -183,4 +184,14 @@ static inline void rdma_restrack_set_task(struct rdma_restrack_entry *res,
res->task = task;
}
/*
* Helper functions for rdma drivers when filling out
* nldev driver attributes.
*/
int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value);
int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name,
u32 value);
int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value);
int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name,
u64 value);
#endif /* _RDMA_RESTRACK_H_ */