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rdma: Expose whether RDMA monitoring is supported

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

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>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Chiara Meiohas
2024-11-12 11:57:59 +02:00
committed by David Ahern
parent e0add1aff5
commit be24be7405
3 changed files with 12 additions and 4 deletions
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6
rdma/sys.c
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@@ -20,6 +20,7 @@ static const char *netns_modes_str[] = {
static int sys_show_parse_cb(const struct nlmsghdr *nlh, void *data)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
uint8_t mon_mode = 0;
bool cof = false;
mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
@@ -48,6 +49,10 @@ static int sys_show_parse_cb(const struct nlmsghdr *nlh, void *data)
}
if (tb[RDMA_NLDEV_SYS_ATTR_MONITOR_MODE])
mon_mode = mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_MONITOR_MODE]);
print_on_off(PRINT_ANY, "monitor", "monitor %s ", mon_mode);
if (tb[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK])
cof = mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK]);
@@ -77,6 +82,7 @@ static int sys_show(struct rd *rd)
{ NULL, sys_show_no_args},
{ "netns", sys_show_no_args},
{ "privileged-qkey", sys_show_no_args},
{ "monitor", sys_show_no_args},
{ 0 }
};

1
rdma/utils.c
View File

@@ -478,6 +478,7 @@ static const enum mnl_attr_data_type nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_DEV_TYPE] = MNL_TYPE_U8,
[RDMA_NLDEV_ATTR_PARENT_NAME] = MNL_TYPE_STRING,
[RDMA_NLDEV_ATTR_EVENT_TYPE] = MNL_TYPE_U8,
[RDMA_NLDEV_SYS_ATTR_MONITOR_MODE] = MNL_TYPE_U8,
};
static int rd_attr_check(const struct nlattr *attr, int *typep)