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RDMA/nldev: Expose port_cap_flags2 

port_cap_flags2 represents IBTA PortInfo:CapabilityMask2.

The field safely extends the RDMA_NLDEV_ATTR_CAP_FLAGS operand as it was
exported as 64 bit to allow this kind of extension.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Michael Guralnik 2018-12-09 11:58:05 +02:00 committed by Jason Gunthorpe
parent 2e8039c656
commit 4fa2813d26
2 changed files with 9 additions and 3 deletions
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9
drivers/infiniband/core/nldev.c
View File

@ -227,6 +227,7 @@ static int fill_port_info(struct sk_buff *msg,
struct net_device *netdev = NULL;
struct ib_port_attr attr;
int ret;
u64 cap_flags = 0;
if (fill_nldev_handle(msg, device))
return -EMSGSIZE;
@ -239,10 +240,12 @@ static int fill_port_info(struct sk_buff *msg,
return ret;
if (rdma_protocol_ib(device, port)) {
BUILD_BUG_ON(sizeof(attr.port_cap_flags) > sizeof(u64));
BUILD_BUG_ON((sizeof(attr.port_cap_flags) +
sizeof(attr.port_cap_flags2)) > sizeof(u64));
cap_flags = attr.port_cap_flags |
((u64)attr.port_cap_flags2 << 32);
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
(u64)attr.port_cap_flags,
RDMA_NLDEV_ATTR_PAD))
cap_flags, RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX,
attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD))

3
include/uapi/rdma/rdma_netlink.h
View File

@ -283,6 +283,9 @@ enum rdma_nldev_attr {
/*
* Device and port capabilities
*
* When used for port info, first 32-bits are CapabilityMask followed by
* 16-bit CapabilityMask2.
*/
RDMA_NLDEV_ATTR_CAP_FLAGS, /* u64 */