This is a note to let you know that I've just added the patch titled
include: net: add static inline dst_dev_overhead() to dst.h
to the 6.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
include-net-add-static-inline-dst_dev_overhead-to-ds.patch
and it can be found in the queue-6.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 68d90abd9928ebf5ce0d9a8f63998af6b6bcebda
Author: Justin Iurman <justin.iurman@xxxxxxxxx>
Date: Tue Dec 3 13:49:42 2024 +0100
include: net: add static inline dst_dev_overhead() to dst.h
[ Upstream commit 0600cf40e9b36fe17f9c9f04d4f9cef249eaa5e7 ]
Add static inline dst_dev_overhead() function to include/net/dst.h. This
helper function is used by ioam6_iptunnel, rpl_iptunnel and
seg6_iptunnel to get the dev's overhead based on a cache entry
(dst_entry). If the cache is empty, the default and generic value
skb->mac_len is returned. Otherwise, LL_RESERVED_SPACE() over dst's dev
is returned.
Signed-off-by: Justin Iurman <justin.iurman@xxxxxxxxx>
Cc: Alexander Lobakin <aleksander.lobakin@xxxxxxxxx>
Cc: Vadim Fedorenko <vadim.fedorenko@xxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Stable-dep-of: 92191dd10730 ("net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/net/dst.h b/include/net/dst.h
index 0f303cc602520..08647c99d79c9 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -440,6 +440,15 @@ static inline void dst_set_expires(struct dst_entry *dst, int timeout)
dst->expires = expires;
}
+static inline unsigned int dst_dev_overhead(struct dst_entry *dst,
+ struct sk_buff *skb)
+{
+ if (likely(dst))
+ return LL_RESERVED_SPACE(dst->dev);
+
+ return skb->mac_len;
+}
+
INDIRECT_CALLABLE_DECLARE(int ip6_output(struct net *, struct sock *,
struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(int ip_output(struct net *, struct sock *,
