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RDMA: Simplify get firmware interface

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There is a need to forward FW version to user space
application through RDMA netlink. In order to make it safe, there
is need to declare nla_policy and limit the size of FW string.

The new define IB_FW_VERSION_NAME_MAX will limit the size of
FW version string. That define was chosen to be equal to
ETHTOOL_FWVERS_LEN, because many drivers anyway are limited
by that value indirectly.

The introduction of this define allows us to remove the string size
from get_fw_str function signature.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Leon Romanovsky
2017-06-27 16:49:53 +03:00
committed by Leon Romanovsky
parent ac50525374
commit 9abb0d1bbd
16 changed files with 36 additions and 47 deletions
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5
drivers/infiniband/hw/mlx4/main.c
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@@ -2587,12 +2587,11 @@ static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
return 0;
}
static void get_fw_ver_str(struct ib_device *device, char *str,
size_t str_len)
static void get_fw_ver_str(struct ib_device *device, char *str)
{
struct mlx4_ib_dev *dev =
container_of(device, struct mlx4_ib_dev, ib_dev);
snprintf(str, str_len, "%d.%d.%d",
snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
(int) (dev->dev->caps.fw_ver >> 32),
(int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
(int) dev->dev->caps.fw_ver & 0xffff);