netdev - [PATCH] ip/iplink_virt_wifi: add support for virt

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Date:   Mon, 18 Apr 2022 00:53:18 +0200
From:   Baligh Gasmi <gasmibal@...il.com>
To:     netdev@...r.kernel.org
Cc:     Stephen Hemminger <stephen@...workplumber.org>,
        David Ahern <dsahern@...nel.org>,
        Baligh Gasmi <gasmibal@...il.com>
Subject: [PATCH] ip/iplink_virt_wifi: add support for virt_wifi

Add support for creating virt_wifi devices type.

Syntax:
$ ip link add link eth0 name wlan0 type virt_wifi

Signed-off-by: Baligh Gasmi <gasmibal@...il.com>
---
 ip/Makefile           |  2 +-
 ip/iplink_virt_wifi.c | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 ip/iplink_virt_wifi.c

diff --git a/ip/Makefile b/ip/Makefile
index 0f14c609..e06a7c84 100644
--- a/ip/Makefile
+++ b/ip/Makefile
@@ -12,7 +12,7 @@ IPOBJ=ip.o ipaddress.o ipaddrlabel.o iproute.o iprule.o ipnetns.o \
     iplink_geneve.o iplink_vrf.o iproute_lwtunnel.o ipmacsec.o ipila.o \
     ipvrf.o iplink_xstats.o ipseg6.o iplink_netdevsim.o iplink_rmnet.o \
     ipnexthop.o ipmptcp.o iplink_bareudp.o iplink_wwan.o ipioam6.o \
-    iplink_amt.o iplink_batadv.o iplink_gtp.o
+    iplink_amt.o iplink_batadv.o iplink_gtp.o iplink_virt_wifi.o
 
 RTMONOBJ=rtmon.o
 
diff --git a/ip/iplink_virt_wifi.c b/ip/iplink_virt_wifi.c
new file mode 100644
index 00000000..28157d85
--- /dev/null
+++ b/ip/iplink_virt_wifi.c
@@ -0,0 +1,24 @@
+/*
+ * iplink_virt_wifi.c	A fake implementation of cfg80211_ops that can be tacked
+ *                      on to an ethernet net_device to make it appear as a
+ *                      wireless connection.
+ *
+ * Authors:            Baligh Gasmi <gasmibal@...il.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "utils.h"
+#include "ip_common.h"
+
+static void virt_wifi_print_help(struct link_util *lu,
+		int argc, char **argv, FILE *f)
+{
+	fprintf(f, "Usage: ... virt_wifi \n");
+}
+
+struct link_util virt_wifi_link_util = {
+	.id		= "virt_wifi",
+	.print_help	= virt_wifi_print_help,
+};
-- 
2.25.1