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RDMA/nldev: Expose whether RDMA monitoring is supported

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Extend the "rdma sys" command to display whether RDMA
monitoring is supported.

RDMA monitoring is not supported in mlx4 because it does
not use the ib_device_set_netdev() API, which sends the
RDMA events.

Example output for kernel where monitoring is supported:
$ rdma sys show
netns shared privileged-qkey off monitor on copy-on-fork on

Example output for kernel where monitoring is not supported:
$ rdma sys show
netns shared privileged-qkey off monitor off copy-on-fork on

Signed-off-by: Chiara Meiohas <cmeiohas@nvidia.com>
Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Link: https://patch.msgid.link/20240909173025.30422-8-michaelgur@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Chiara Meiohas 2024-09-09 20:30:25 +03:00 committed by Leon Romanovsky
parent 9cbed5aab5
commit 12fb1153c5
2 changed files with 7 additions and 0 deletions
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6
drivers/infiniband/core/nldev.c
View File

@ -1952,6 +1952,12 @@ static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
nlmsg_free(msg);
return err;
}
err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_MONITOR_MODE, 1);
if (err) {
nlmsg_free(msg);
return err;
}
/*
* Copy-on-fork is supported.
* See commits:

1
include/uapi/rdma/rdma_netlink.h
View File

@ -579,6 +579,7 @@ enum rdma_nldev_attr {
RDMA_NLDEV_ATTR_EVENT_TYPE, /* u8 */
RDMA_NLDEV_SYS_ATTR_MONITOR_MODE, /* u8 */
/*
* Always the end
*/