[PATCH 2/3] sunrpc: Add a sysfs attr for xprtsec

Anna Schumaker
2025-01-08T21:36:34Z

From: Anna Schumaker <anna.schumaker@oracle.com>

This allows the admin to check the TLS configuration for each xprt.

Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
---
net/sunrpc/sysfs.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/net/sunrpc/sysfs.c b/net/sunrpc/sysfs.c
index 5c8ecdaaa985..dc3b7cd70000 100644
--- a/net/sunrpc/sysfs.c
+++ b/net/sunrpc/sysfs.c
@@ -129,6 +129,31 @@ static ssize_t rpc_sysfs_xprt_srcaddr_show(struct kobject *kobj,
return ret;
}

+static const char *xprtsec_strings[] = {
+ [RPC_XPRTSEC_NONE] = "none",
+ [RPC_XPRTSEC_TLS_ANON] = "tls-anon",
+ [RPC_XPRTSEC_TLS_X509] = "tls-x509",
+};
+
+static ssize_t rpc_sysfs_xprt_xprtsec_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *buf)
+{
+ struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
+ ssize_t ret;
+
+ if (!xprt) {
+ ret = sprintf(buf, "<closed>\n");
+ goto out;
+ }
+
+ ret = sprintf(buf, "%s\n", xprtsec_strings[xprt->xprtsec.policy]);
+ xprt_put(xprt);
+out:
+ return ret;
+
+}
+
static ssize_t rpc_sysfs_xprt_info_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@@ -404,6 +429,9 @@ static struct kobj_attribute rpc_sysfs_xprt_dstaddr = __ATTR(dstaddr,
static struct kobj_attribute rpc_sysfs_xprt_srcaddr = __ATTR(srcaddr,
0644, rpc_sysfs_xprt_srcaddr_show, NULL);

+static struct kobj_attribute rpc_sysfs_xprt_xprtsec = __ATTR(xprtsec,
+ 0644, rpc_sysfs_xprt_xprtsec_show, NULL);
+
static struct kobj_attribute rpc_sysfs_xprt_info = __ATTR(xprt_info,
0444, rpc_sysfs_xprt_info_show, NULL);

@@ -413,6 +441,7 @@ static struct kobj_attribute rpc_sysfs_xprt_change_state = __ATTR(xprt_state,
static struct attribute *rpc_sysfs_xprt_attrs[] = {
&rpc_sysfs_xprt_dstaddr.attr,
&rpc_sysfs_xprt_srcaddr.attr,
+ &rpc_sysfs_xprt_xprtsec.attr,
&rpc_sysfs_xprt_info.attr,
&rpc_sysfs_xprt_change_state.attr,
NULL,
--
2.47.1