修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/net/batman-adv/tp_meter.c
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@@ -1,19 +1,7 @@
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 // SPDX-License-Identifier: GPL-2.0
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-/* Copyright (C) 2012-2018  B.A.T.M.A.N. contributors:
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+/* Copyright (C) 2012-2020  B.A.T.M.A.N. contributors:
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  *
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  * Edo Monticelli, Antonio Quartulli
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of version 2 of the GNU General Public
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- * License as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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- * General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, see <http://www.gnu.org/licenses/>.
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  */
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 #include "tp_meter.h"
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@@ -33,6 +21,7 @@
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 #include <linux/kernel.h>
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 #include <linux/kref.h>
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 #include <linux/kthread.h>
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+#include <linux/limits.h>
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 #include <linux/list.h>
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 #include <linux/netdevice.h>
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 #include <linux/param.h>
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@@ -77,7 +66,7 @@
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 /**
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  * BATADV_TP_MAX_RTO - Maximum sender timeout. If the sender RTO gets beyond
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- * such amound of milliseconds, the receiver is considered unreachable and the
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+ * such amount of milliseconds, the receiver is considered unreachable and the
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  * connection is killed
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  */
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 #define BATADV_TP_MAX_RTO 30000
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@@ -119,10 +108,10 @@
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  * batadv_tp_cwnd() - compute the new cwnd size
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  * @base: base cwnd size value
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  * @increment: the value to add to base to get the new size
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- * @min: minumim cwnd value (usually MSS)
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+ * @min: minimum cwnd value (usually MSS)
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  *
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- * Return the new cwnd size and ensures it does not exceed the Advertised
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- * Receiver Window size. It is wrap around safe.
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+ * Return the new cwnd size and ensure it does not exceed the Advertised
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+ * Receiver Window size. It is wrapped around safely.
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  * For details refer to Section 3.1 of RFC5681
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  *
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  * Return: new congestion window size in bytes
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@@ -265,7 +254,7 @@
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  * @dst: the other endpoint MAC address to look for
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  *
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  * Look for a tp_vars object matching dst as end_point and return it after
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- * having incremented the refcounter. Return NULL is not found
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+ * having increment the refcounter. Return NULL is not found
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  *
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  * Return: matching tp_vars or NULL when no tp_vars with @dst was found
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  */
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@@ -302,7 +291,7 @@
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  * @session: session identifier
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  *
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  * Look for a tp_vars object matching dst as end_point, session as tp meter
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- * session and return it after having incremented the refcounter. Return NULL
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+ * session and return it after having increment the refcounter. Return NULL
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  * is not found
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  *
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  * Return: matching tp_vars or NULL when no tp_vars was found
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@@ -368,6 +357,9 @@
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  */
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 static void batadv_tp_vars_put(struct batadv_tp_vars *tp_vars)
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 {
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+	if (!tp_vars)
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+		return;
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+
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 	kref_put(&tp_vars->refcount, batadv_tp_vars_release);
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 }
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