From: Chiara Meiohas <cmeiohas@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Michael Guralnik <michaelgur@xxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
drivers/infiniband/core/nldev.c | 6 ++++++
include/uapi/rdma/rdma_netlink.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 5acbde242b97..f6eaf9c1fc05 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -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:
diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
index 5f9636d26050..39be09c0ffbb 100644
--- a/include/uapi/rdma/rdma_netlink.h
+++ b/include/uapi/rdma/rdma_netlink.h
@@ -579,6 +579,7 @@ enum rdma_nldev_attr {
RDMA_NLDEV_ATTR_EVENT_TYPE, /* u8 */
+ RDMA_NLDEV_SYS_ATTR_MONITOR_MODE, /* u8 */
/*
* Always the end
*/
--
2.17.2
