From 7a5b9c4abcf24856b0a9bd2517373ada261ef943 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Thu, 27 Mar 2025 16:45:06 -0400
Subject: [PATCH] netmap: Add a cdev_pg_path hook that returns the name of the
 cdev

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D49337
---
 sys/dev/netmap/netmap_freebsd.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sys/dev/netmap/netmap_freebsd.c b/sys/dev/netmap/netmap_freebsd.c
index 6448fdc7416..8cc543d54c2 100644
--- a/sys/dev/netmap/netmap_freebsd.c
+++ b/sys/dev/netmap/netmap_freebsd.c
@@ -1025,11 +1025,20 @@ netmap_dev_pager_fault(vm_object_t object, vm_ooffset_t offset,
 	return (VM_PAGER_OK);
 }
 
+static void
+netmap_dev_pager_path(void *handle, char *path, size_t len)
+{
+	struct netmap_vm_handle_t *vmh = handle;
+	struct cdev *dev = vmh->dev;
+
+	dev_copyname(dev, path, len);
+}
 
 static struct cdev_pager_ops netmap_cdev_pager_ops = {
 	.cdev_pg_ctor = netmap_dev_pager_ctor,
 	.cdev_pg_dtor = netmap_dev_pager_dtor,
 	.cdev_pg_fault = netmap_dev_pager_fault,
+	.cdev_pg_path = netmap_dev_pager_path,
 };