From: Marek Lindner <lindner_marek@yahoo.de>
Date: Sat, 10 Dec 2011 11:45:53 +0000 (+0800)
Subject: batman-adv: allowing changing the routing algorithm via module parameter
X-Git-Tag: firefly_0821_release~3680^2~3338^2~96^2~13
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d419be1fd1e4417adc833365a3b69d0968c27c3f;p=firefly-linux-kernel-4.4.55.git

batman-adv: allowing changing the routing algorithm via module parameter

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index bcc2bddd893a..8ae497b26bd8 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -256,6 +256,30 @@ int bat_algo_seq_print_text(struct seq_file *seq, void *offset)
 	return 0;
 }
 
+static int param_set_ra(const char *val, const struct kernel_param *kp)
+{
+	struct bat_algo_ops *bat_algo_ops;
+
+	bat_algo_ops = bat_algo_get((char *)val);
+	if (!bat_algo_ops) {
+		pr_err("Routing algorithm '%s' is not supported\n", val);
+		return -EINVAL;
+	}
+
+	return param_set_copystring(val, kp);
+}
+
+static const struct kernel_param_ops param_ops_ra = {
+	.set = param_set_ra,
+	.get = param_get_string,
+};
+
+static struct kparam_string __param_string_ra = {
+	.maxlen = sizeof(bat_routing_algo),
+	.string = bat_routing_algo,
+};
+
+module_param_cb(routing_algo, &param_ops_ra, &__param_string_ra, 0644);
 module_init(batman_init);
 module_exit(batman_exit);